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Fixes #2022, do not resume on Android when surfaceChanged

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If the app is in landscape mode and the user presses the power button, a pause
is followed immediately by a surfaceChanged event because the lock screen
is shown in portrait mode. This triggers a "false" resume.
So, we just pause and resume following the onWindowFocusChanged events.

Also, wait for SDL_APP_WILLENTERBACKGROUND and SDL_APP_DIDENTERBACKGROUND before
blocking the event pump.
This commit is contained in:
Gabriel Jacobo
2013-08-12 11:13:50 -03:00
commit dad420670f
859 changed files with 310893 additions and 0 deletions
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463
src/SDL.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Initialization code for SDL */
#include "SDL.h"
#include "SDL_bits.h"
#include "SDL_revision.h"
#include "SDL_assert_c.h"
#include "events/SDL_events_c.h"
#include "haptic/SDL_haptic_c.h"
#include "joystick/SDL_joystick_c.h"
/* Initialization/Cleanup routines */
#if !SDL_TIMERS_DISABLED
extern int SDL_TimerInit(void);
extern void SDL_TimerQuit(void);
extern void SDL_InitTicks(void);
#endif
#if SDL_VIDEO_DRIVER_WINDOWS
extern int SDL_HelperWindowCreate(void);
extern int SDL_HelperWindowDestroy(void);
#endif
/* The initialized subsystems */
#ifdef SDL_MAIN_NEEDED
static SDL_bool SDL_MainIsReady = SDL_FALSE;
#else
static SDL_bool SDL_MainIsReady = SDL_TRUE;
#endif
static SDL_bool SDL_bInMainQuit = SDL_FALSE;
static Uint8 SDL_SubsystemRefCount[ 32 ];
/* Private helper to increment a subsystem's ref counter. */
static void
SDL_PrivateSubsystemRefCountIncr(Uint32 subsystem)
{
int subsystem_index = SDL_MostSignificantBitIndex32(subsystem);
SDL_assert(SDL_SubsystemRefCount[subsystem_index] < 255);
++SDL_SubsystemRefCount[subsystem_index];
}
/* Private helper to decrement a subsystem's ref counter. */
static void
SDL_PrivateSubsystemRefCountDecr(Uint32 subsystem)
{
int subsystem_index = SDL_MostSignificantBitIndex32(subsystem);
if (SDL_SubsystemRefCount[subsystem_index] > 0) {
--SDL_SubsystemRefCount[subsystem_index];
}
}
/* Private helper to check if a system needs init. */
static SDL_bool
SDL_PrivateShouldInitSubsystem(Uint32 subsystem)
{
int subsystem_index = SDL_MostSignificantBitIndex32(subsystem);
SDL_assert(SDL_SubsystemRefCount[subsystem_index] < 255);
return (SDL_SubsystemRefCount[subsystem_index] == 0);
}
/* Private helper to check if a system needs to be quit. */
static SDL_bool
SDL_PrivateShouldQuitSubsystem(Uint32 subsystem) {
int subsystem_index = SDL_MostSignificantBitIndex32(subsystem);
if (SDL_SubsystemRefCount[subsystem_index] == 0) {
return SDL_FALSE;
}
/* If we're in SDL_Quit, we shut down every subsystem, even if refcount
* isn't zero.
*/
return SDL_SubsystemRefCount[subsystem_index] == 1 || SDL_bInMainQuit;
}
void
SDL_SetMainReady(void)
{
SDL_MainIsReady = SDL_TRUE;
}
int
SDL_InitSubSystem(Uint32 flags)
{
if (!SDL_MainIsReady) {
SDL_SetError("Application didn't initialize properly, did you include SDL_main.h in the file containing your main() function?");
return -1;
}
/* Clear the error message */
SDL_ClearError();
#if SDL_VIDEO_DRIVER_WINDOWS
if (SDL_HelperWindowCreate() < 0) {
return -1;
}
#endif
#if !SDL_TIMERS_DISABLED
SDL_InitTicks();
#endif
if ((flags & SDL_INIT_GAMECONTROLLER)) {
/* game controller implies joystick */
flags |= SDL_INIT_JOYSTICK;
}
if ((flags & (SDL_INIT_VIDEO|SDL_INIT_JOYSTICK))) {
/* video or joystick implies events */
flags |= SDL_INIT_EVENTS;
}
/* Initialize the event subsystem */
if ((flags & SDL_INIT_EVENTS)) {
#if !SDL_EVENTS_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_EVENTS)) {
if (SDL_StartEventLoop() < 0) {
return (-1);
}
SDL_QuitInit();
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_EVENTS);
#else
return SDL_SetError("SDL not built with events support");
#endif
}
/* Initialize the timer subsystem */
if ((flags & SDL_INIT_TIMER)){
#if !SDL_TIMERS_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_TIMER)) {
if (SDL_TimerInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_TIMER);
#else
return SDL_SetError("SDL not built with timer support");
#endif
}
/* Initialize the video subsystem */
if ((flags & SDL_INIT_VIDEO)){
#if !SDL_VIDEO_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_VIDEO)) {
if (SDL_VideoInit(NULL) < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_VIDEO);
#else
return SDL_SetError("SDL not built with video support");
#endif
}
/* Initialize the audio subsystem */
if ((flags & SDL_INIT_AUDIO)){
#if !SDL_AUDIO_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_AUDIO)) {
if (SDL_AudioInit(NULL) < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_AUDIO);
#else
return SDL_SetError("SDL not built with audio support");
#endif
}
/* Initialize the joystick subsystem */
if ((flags & SDL_INIT_JOYSTICK)){
#if !SDL_JOYSTICK_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_JOYSTICK)) {
if (SDL_JoystickInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_JOYSTICK);
#else
return SDL_SetError("SDL not built with joystick support");
#endif
}
if ((flags & SDL_INIT_GAMECONTROLLER)){
#if !SDL_JOYSTICK_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_GAMECONTROLLER)) {
if (SDL_GameControllerInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_GAMECONTROLLER);
#else
return SDL_SetError("SDL not built with joystick support");
#endif
}
/* Initialize the haptic subsystem */
if ((flags & SDL_INIT_HAPTIC)){
#if !SDL_HAPTIC_DISABLED
if (SDL_PrivateShouldInitSubsystem(SDL_INIT_HAPTIC)) {
if (SDL_HapticInit() < 0) {
return (-1);
}
}
SDL_PrivateSubsystemRefCountIncr(SDL_INIT_HAPTIC);
#else
return SDL_SetError("SDL not built with haptic (force feedback) support");
#endif
}
return (0);
}
int
SDL_Init(Uint32 flags)
{
return SDL_InitSubSystem(flags);
}
void
SDL_QuitSubSystem(Uint32 flags)
{
/* Shut down requested initialized subsystems */
#if !SDL_JOYSTICK_DISABLED
if ((flags & SDL_INIT_GAMECONTROLLER)) {
/* game controller implies joystick */
flags |= SDL_INIT_JOYSTICK;
if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_GAMECONTROLLER)) {
SDL_GameControllerQuit();
}
SDL_PrivateSubsystemRefCountDecr(SDL_INIT_GAMECONTROLLER);
}
if ((flags & SDL_INIT_JOYSTICK)) {
/* joystick implies events */
flags |= SDL_INIT_EVENTS;
if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_JOYSTICK)) {
SDL_JoystickQuit();
}
SDL_PrivateSubsystemRefCountDecr(SDL_INIT_JOYSTICK);
}
#endif
#if !SDL_HAPTIC_DISABLED
if ((flags & SDL_INIT_HAPTIC)) {
if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_HAPTIC)) {
SDL_HapticQuit();
}
SDL_PrivateSubsystemRefCountDecr(SDL_INIT_HAPTIC);
}
#endif
#if !SDL_AUDIO_DISABLED
if ((flags & SDL_INIT_AUDIO)) {
if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_AUDIO)) {
SDL_AudioQuit();
}
SDL_PrivateSubsystemRefCountDecr(SDL_INIT_AUDIO);
}
#endif
#if !SDL_VIDEO_DISABLED
if ((flags & SDL_INIT_VIDEO)) {
/* video implies events */
flags |= SDL_INIT_EVENTS;
if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_VIDEO)) {
SDL_VideoQuit();
}
SDL_PrivateSubsystemRefCountDecr(SDL_INIT_VIDEO);
}
#endif
#if !SDL_TIMERS_DISABLED
if ((flags & SDL_INIT_TIMER)) {
if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_TIMER)) {
SDL_TimerQuit();
}
SDL_PrivateSubsystemRefCountDecr(SDL_INIT_TIMER);
}
#endif
#if !SDL_EVENTS_DISABLED
if ((flags & SDL_INIT_EVENTS)) {
if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_EVENTS)) {
SDL_QuitQuit();
SDL_StopEventLoop();
}
SDL_PrivateSubsystemRefCountDecr(SDL_INIT_EVENTS);
}
#endif
}
Uint32
SDL_WasInit(Uint32 flags)
{
int i;
int num_subsystems = SDL_arraysize(SDL_SubsystemRefCount);
Uint32 initialized = 0;
if (!flags) {
flags = SDL_INIT_EVERYTHING;
}
num_subsystems = SDL_min(num_subsystems, SDL_MostSignificantBitIndex32(flags) + 1);
/* Iterate over each bit in flags, and check the matching subsystem. */
for (i = 0; i < num_subsystems; ++i) {
if ((flags & 1) && SDL_SubsystemRefCount[i] > 0) {
initialized |= (1 << i);
}
flags >>= 1;
}
return initialized;
}
void
SDL_Quit(void)
{
SDL_bInMainQuit = SDL_TRUE;
/* Quit all subsystems */
#if SDL_VIDEO_DRIVER_WINDOWS
SDL_HelperWindowDestroy();
#endif
SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
SDL_ClearHints();
SDL_AssertionsQuit();
SDL_LogResetPriorities();
/* Now that every subsystem has been quit, we reset the subsystem refcount
* and the list of initialized subsystems.
*/
SDL_memset( SDL_SubsystemRefCount, 0x0, sizeof(SDL_SubsystemRefCount) );
SDL_bInMainQuit = SDL_FALSE;
}
/* Get the library version number */
void
SDL_GetVersion(SDL_version * ver)
{
SDL_VERSION(ver);
}
/* Get the library source revision */
const char *
SDL_GetRevision(void)
{
return SDL_REVISION;
}
/* Get the library source revision number */
int
SDL_GetRevisionNumber(void)
{
return SDL_REVISION_NUMBER;
}
/* Get the name of the platform */
const char *
SDL_GetPlatform()
{
#if __AIX__
return "AIX";
#elif __ANDROID__
return "Android";
#elif __BEOS__
return "BeOS";
#elif __BSDI__
return "BSDI";
#elif __DREAMCAST__
return "Dreamcast";
#elif __FREEBSD__
return "FreeBSD";
#elif __HAIKU__
return "Haiku";
#elif __HPUX__
return "HP-UX";
#elif __IRIX__
return "Irix";
#elif __LINUX__
return "Linux";
#elif __MINT__
return "Atari MiNT";
#elif __MACOS__
return "MacOS Classic";
#elif __MACOSX__
return "Mac OS X";
#elif __NETBSD__
return "NetBSD";
#elif __OPENBSD__
return "OpenBSD";
#elif __OS2__
return "OS/2";
#elif __OSF__
return "OSF/1";
#elif __QNXNTO__
return "QNX Neutrino";
#elif __RISCOS__
return "RISC OS";
#elif __SOLARIS__
return "Solaris";
#elif __WIN32__
return "Windows";
#elif __IPHONEOS__
return "iOS";
#elif __PSP__
return "PlayStation Portable";
#else
return "Unknown (see SDL_platform.h)";
#endif
}
#if defined(__WIN32__)
#if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL))
/* Need to include DllMain() on Watcom C for some reason.. */
#include "core/windows/SDL_windows.h"
BOOL APIENTRY
_DllMainCRTStartup(HANDLE hModule,
DWORD ul_reason_for_call, LPVOID lpReserved)
{
switch (ul_reason_for_call) {
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}
#endif /* building DLL with Watcom C */
#endif /* __WIN32__ */
/* vi: set sts=4 ts=4 sw=4 expandtab: */

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src/SDL_assert.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "SDL.h"
#include "SDL_atomic.h"
#include "SDL_messagebox.h"
#include "SDL_video.h"
#include "SDL_assert.h"
#include "SDL_assert_c.h"
#include "video/SDL_sysvideo.h"
#ifdef __WIN32__
#include "core/windows/SDL_windows.h"
#ifndef WS_OVERLAPPEDWINDOW
#define WS_OVERLAPPEDWINDOW 0
#endif
#else /* fprintf, _exit(), etc. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#endif
static SDL_assert_state
SDL_PromptAssertion(const SDL_assert_data *data, void *userdata);
/*
* We keep all triggered assertions in a singly-linked list so we can
* generate a report later.
*/
static SDL_assert_data *triggered_assertions = NULL;
static SDL_mutex *assertion_mutex = NULL;
static SDL_AssertionHandler assertion_handler = SDL_PromptAssertion;
static void *assertion_userdata = NULL;
#ifdef __GNUC__
static void
debug_print(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
#endif
static void
debug_print(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
SDL_LogMessageV(SDL_LOG_CATEGORY_ASSERT, SDL_LOG_PRIORITY_WARN, fmt, ap);
va_end(ap);
}
static void SDL_AddAssertionToReport(SDL_assert_data *data)
{
/* (data) is always a static struct defined with the assert macros, so
we don't have to worry about copying or allocating them. */
data->trigger_count++;
if (data->trigger_count == 1) { /* not yet added? */
data->next = triggered_assertions;
triggered_assertions = data;
}
}
static void SDL_GenerateAssertionReport(void)
{
const SDL_assert_data *item = triggered_assertions;
/* only do this if the app hasn't assigned an assertion handler. */
if ((item != NULL) && (assertion_handler != SDL_PromptAssertion)) {
debug_print("\n\nSDL assertion report.\n");
debug_print("All SDL assertions between last init/quit:\n\n");
while (item != NULL) {
debug_print(
"'%s'\n"
" * %s (%s:%d)\n"
" * triggered %u time%s.\n"
" * always ignore: %s.\n",
item->condition, item->function, item->filename,
item->linenum, item->trigger_count,
(item->trigger_count == 1) ? "" : "s",
item->always_ignore ? "yes" : "no");
item = item->next;
}
debug_print("\n");
SDL_ResetAssertionReport();
}
}
static void SDL_ExitProcess(int exitcode)
{
#ifdef __WIN32__
ExitProcess(exitcode);
#else
_exit(exitcode);
#endif
}
static void SDL_AbortAssertion(void)
{
SDL_Quit();
SDL_ExitProcess(42);
}
static SDL_assert_state
SDL_PromptAssertion(const SDL_assert_data *data, void *userdata)
{
#ifdef __WIN32__
#define ENDLINE "\r\n"
#else
#define ENDLINE "\n"
#endif
const char *envr;
SDL_assert_state state = SDL_ASSERTION_ABORT;
SDL_Window *window;
SDL_MessageBoxData messagebox;
SDL_MessageBoxButtonData buttons[] = {
{ 0, SDL_ASSERTION_RETRY, "Retry" },
{ 0, SDL_ASSERTION_BREAK, "Break" },
{ 0, SDL_ASSERTION_ABORT, "Abort" },
{ SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT,
SDL_ASSERTION_IGNORE, "Ignore" },
{ SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT,
SDL_ASSERTION_ALWAYS_IGNORE, "Always Ignore" }
};
char *message;
int selected;
(void) userdata; /* unused in default handler. */
message = SDL_stack_alloc(char, SDL_MAX_LOG_MESSAGE);
if (!message) {
/* Uh oh, we're in real trouble now... */
return SDL_ASSERTION_ABORT;
}
SDL_snprintf(message, SDL_MAX_LOG_MESSAGE,
"Assertion failure at %s (%s:%d), triggered %u %s:" ENDLINE
" '%s'",
data->function, data->filename, data->linenum,
data->trigger_count, (data->trigger_count == 1) ? "time" : "times",
data->condition);
debug_print("\n\n%s\n\n", message);
/* let env. variable override, so unit tests won't block in a GUI. */
envr = SDL_getenv("SDL_ASSERT");
if (envr != NULL) {
SDL_stack_free(message);
if (SDL_strcmp(envr, "abort") == 0) {
return SDL_ASSERTION_ABORT;
} else if (SDL_strcmp(envr, "break") == 0) {
return SDL_ASSERTION_BREAK;
} else if (SDL_strcmp(envr, "retry") == 0) {
return SDL_ASSERTION_RETRY;
} else if (SDL_strcmp(envr, "ignore") == 0) {
return SDL_ASSERTION_IGNORE;
} else if (SDL_strcmp(envr, "always_ignore") == 0) {
return SDL_ASSERTION_ALWAYS_IGNORE;
} else {
return SDL_ASSERTION_ABORT; /* oh well. */
}
}
/* Leave fullscreen mode, if possible (scary!) */
window = SDL_GetFocusWindow();
if (window) {
if (SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN) {
SDL_MinimizeWindow(window);
} else {
/* !!! FIXME: ungrab the input if we're not fullscreen? */
/* No need to mess with the window */
window = NULL;
}
}
/* Show a messagebox if we can, otherwise fall back to stdio */
SDL_zero(messagebox);
messagebox.flags = SDL_MESSAGEBOX_WARNING;
messagebox.window = window;
messagebox.title = "Assertion Failed";
messagebox.message = message;
messagebox.numbuttons = SDL_arraysize(buttons);
messagebox.buttons = buttons;
if (SDL_ShowMessageBox(&messagebox, &selected) == 0) {
if (selected == -1) {
state = SDL_ASSERTION_IGNORE;
} else {
state = (SDL_assert_state)selected;
}
}
#ifdef HAVE_STDIO_H
else
{
/* this is a little hacky. */
for ( ; ; ) {
char buf[32];
fprintf(stderr, "Abort/Break/Retry/Ignore/AlwaysIgnore? [abriA] : ");
fflush(stderr);
if (fgets(buf, sizeof (buf), stdin) == NULL) {
break;
}
if (SDL_strcmp(buf, "a") == 0) {
state = SDL_ASSERTION_ABORT;
break;
} else if (SDL_strcmp(buf, "b") == 0) {
state = SDL_ASSERTION_BREAK;
break;
} else if (SDL_strcmp(buf, "r") == 0) {
state = SDL_ASSERTION_RETRY;
break;
} else if (SDL_strcmp(buf, "i") == 0) {
state = SDL_ASSERTION_IGNORE;
break;
} else if (SDL_strcmp(buf, "A") == 0) {
state = SDL_ASSERTION_ALWAYS_IGNORE;
break;
}
}
}
#endif /* HAVE_STDIO_H */
/* Re-enter fullscreen mode */
if (window) {
SDL_RestoreWindow(window);
}
SDL_stack_free(message);
return state;
}
SDL_assert_state
SDL_ReportAssertion(SDL_assert_data *data, const char *func, const char *file,
int line)
{
static int assertion_running = 0;
static SDL_SpinLock spinlock = 0;
SDL_assert_state state = SDL_ASSERTION_IGNORE;
SDL_AtomicLock(&spinlock);
if (assertion_mutex == NULL) { /* never called SDL_Init()? */
assertion_mutex = SDL_CreateMutex();
if (assertion_mutex == NULL) {
SDL_AtomicUnlock(&spinlock);
return SDL_ASSERTION_IGNORE; /* oh well, I guess. */
}
}
SDL_AtomicUnlock(&spinlock);
if (SDL_LockMutex(assertion_mutex) < 0) {
return SDL_ASSERTION_IGNORE; /* oh well, I guess. */
}
/* doing this because Visual C is upset over assigning in the macro. */
if (data->trigger_count == 0) {
data->function = func;
data->filename = file;
data->linenum = line;
}
SDL_AddAssertionToReport(data);
assertion_running++;
if (assertion_running > 1) { /* assert during assert! Abort. */
if (assertion_running == 2) {
SDL_AbortAssertion();
} else if (assertion_running == 3) { /* Abort asserted! */
SDL_ExitProcess(42);
} else {
while (1) { /* do nothing but spin; what else can you do?! */ }
}
}
if (!data->always_ignore) {
state = assertion_handler(data, assertion_userdata);
}
switch (state)
{
case SDL_ASSERTION_ABORT:
SDL_AbortAssertion();
return SDL_ASSERTION_IGNORE; /* shouldn't return, but oh well. */
case SDL_ASSERTION_ALWAYS_IGNORE:
state = SDL_ASSERTION_IGNORE;
data->always_ignore = 1;
break;
case SDL_ASSERTION_IGNORE:
case SDL_ASSERTION_RETRY:
case SDL_ASSERTION_BREAK:
break; /* macro handles these. */
}
assertion_running--;
SDL_UnlockMutex(assertion_mutex);
return state;
}
void SDL_AssertionsQuit(void)
{
SDL_GenerateAssertionReport();
if (assertion_mutex != NULL) {
SDL_DestroyMutex(assertion_mutex);
assertion_mutex = NULL;
}
}
void SDL_SetAssertionHandler(SDL_AssertionHandler handler, void *userdata)
{
if (handler != NULL) {
assertion_handler = handler;
assertion_userdata = userdata;
} else {
assertion_handler = SDL_PromptAssertion;
assertion_userdata = NULL;
}
}
const SDL_assert_data *SDL_GetAssertionReport(void)
{
return triggered_assertions;
}
void SDL_ResetAssertionReport(void)
{
SDL_assert_data *next = NULL;
SDL_assert_data *item;
for (item = triggered_assertions; item != NULL; item = next) {
next = (SDL_assert_data *) item->next;
item->always_ignore = SDL_FALSE;
item->trigger_count = 0;
item->next = NULL;
}
triggered_assertions = NULL;
}
/* vi: set ts=4 sw=4 expandtab: */

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src/SDL_assert_c.h Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
extern void SDL_AssertionsQuit(void);
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Simple error handling in SDL */
#include "SDL_log.h"
#include "SDL_error.h"
#include "SDL_error_c.h"
/* Routine to get the thread-specific error variable */
#if SDL_THREADS_DISABLED
/* The default (non-thread-safe) global error variable */
static SDL_error SDL_global_error;
#define SDL_GetErrBuf() (&SDL_global_error)
#else
extern SDL_error *SDL_GetErrBuf(void);
#endif /* SDL_THREADS_DISABLED */
#define SDL_ERRBUFIZE 1024
/* Private functions */
static const char *
SDL_LookupString(const char *key)
{
/* FIXME: Add code to lookup key in language string hash-table */
return key;
}
/* Public functions */
int
SDL_SetError(const char *fmt, ...)
{
va_list ap;
SDL_error *error;
/* Ignore call if invalid format pointer was passed */
if (fmt == NULL) return -1;
/* Copy in the key, mark error as valid */
error = SDL_GetErrBuf();
error->error = 1;
SDL_strlcpy((char *) error->key, fmt, sizeof(error->key));
va_start(ap, fmt);
error->argc = 0;
while (*fmt) {
if (*fmt++ == '%') {
while (*fmt == '.' || (*fmt >= '0' && *fmt <= '9')) {
++fmt;
}
switch (*fmt++) {
case 0: /* Malformed format string.. */
--fmt;
break;
case 'c':
case 'i':
case 'd':
case 'u':
case 'o':
case 'x':
case 'X':
error->args[error->argc++].value_i = va_arg(ap, int);
break;
case 'f':
error->args[error->argc++].value_f = va_arg(ap, double);
break;
case 'p':
error->args[error->argc++].value_ptr = va_arg(ap, void *);
break;
case 's':
{
int i = error->argc;
const char *str = va_arg(ap, const char *);
if (str == NULL)
str = "(null)";
SDL_strlcpy((char *) error->args[i].buf, str,
ERR_MAX_STRLEN);
error->argc++;
}
break;
default:
break;
}
if (error->argc >= ERR_MAX_ARGS) {
break;
}
}
}
va_end(ap);
/* If we are in debug mode, print out an error message */
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "%s", SDL_GetError());
return -1;
}
/* This function has a bit more overhead than most error functions
so that it supports internationalization and thread-safe errors.
*/
static char *
SDL_GetErrorMsg(char *errstr, unsigned int maxlen)
{
SDL_error *error;
/* Clear the error string */
*errstr = '\0';
--maxlen;
/* Get the thread-safe error, and print it out */
error = SDL_GetErrBuf();
if (error->error) {
const char *fmt;
char *msg = errstr;
int len;
int argi;
fmt = SDL_LookupString(error->key);
argi = 0;
while (*fmt && (maxlen > 0)) {
if (*fmt == '%') {
char tmp[32], *spot = tmp;
*spot++ = *fmt++;
while ((*fmt == '.' || (*fmt >= '0' && *fmt <= '9'))
&& spot < (tmp + SDL_arraysize(tmp) - 2)) {
*spot++ = *fmt++;
}
*spot++ = *fmt++;
*spot++ = '\0';
switch (spot[-2]) {
case '%':
*msg++ = '%';
maxlen -= 1;
break;
case 'c':
case 'i':
case 'd':
case 'u':
case 'o':
case 'x':
case 'X':
len =
SDL_snprintf(msg, maxlen, tmp,
error->args[argi++].value_i);
msg += len;
maxlen -= len;
break;
case 'f':
len =
SDL_snprintf(msg, maxlen, tmp,
error->args[argi++].value_f);
msg += len;
maxlen -= len;
break;
case 'p':
len =
SDL_snprintf(msg, maxlen, tmp,
error->args[argi++].value_ptr);
msg += len;
maxlen -= len;
break;
case 's':
len =
SDL_snprintf(msg, maxlen, tmp,
SDL_LookupString(error->args[argi++].
buf));
msg += len;
maxlen -= len;
break;
}
} else {
*msg++ = *fmt++;
maxlen -= 1;
}
}
*msg = 0; /* NULL terminate the string */
}
return (errstr);
}
/* Available for backwards compatibility */
const char *
SDL_GetError(void)
{
static char errmsg[SDL_ERRBUFIZE];
return SDL_GetErrorMsg(errmsg, SDL_ERRBUFIZE);
}
void
SDL_ClearError(void)
{
SDL_error *error;
error = SDL_GetErrBuf();
error->error = 0;
}
/* Very common errors go here */
int
SDL_Error(SDL_errorcode code)
{
switch (code) {
case SDL_ENOMEM:
return SDL_SetError("Out of memory");
case SDL_EFREAD:
return SDL_SetError("Error reading from datastream");
case SDL_EFWRITE:
return SDL_SetError("Error writing to datastream");
case SDL_EFSEEK:
return SDL_SetError("Error seeking in datastream");
case SDL_UNSUPPORTED:
return SDL_SetError("That operation is not supported");
default:
return SDL_SetError("Unknown SDL error");
}
}
#ifdef TEST_ERROR
int
main(int argc, char *argv[])
{
char buffer[BUFSIZ + 1];
SDL_SetError("Hi there!");
printf("Error 1: %s\n", SDL_GetError());
SDL_ClearError();
SDL_memset(buffer, '1', BUFSIZ);
buffer[BUFSIZ] = 0;
SDL_SetError("This is the error: %s (%f)", buffer, 1.0);
printf("Error 2: %s\n", SDL_GetError());
exit(0);
}
#endif
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* This file defines a structure that carries language-independent
error messages
*/
#ifndef _SDL_error_c_h
#define _SDL_error_c_h
#define ERR_MAX_STRLEN 128
#define ERR_MAX_ARGS 5
typedef struct SDL_error
{
/* This is a numeric value corresponding to the current error */
int error;
/* This is a key used to index into a language hashtable containing
internationalized versions of the SDL error messages. If the key
is not in the hashtable, or no hashtable is available, the key is
used directly as an error message format string.
*/
char key[ERR_MAX_STRLEN];
/* These are the arguments for the error functions */
int argc;
union
{
void *value_ptr;
#if 0 /* What is a character anyway? (UNICODE issues) */
unsigned char value_c;
#endif
int value_i;
double value_f;
char buf[ERR_MAX_STRLEN];
} args[ERR_MAX_ARGS];
} SDL_error;
/* Defined in SDL_thread.c */
extern SDL_error *SDL_GetErrBuf(void);
#endif /* _SDL_error_c_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "SDL_hints.h"
#include "SDL_error.h"
/* Assuming there aren't many hints set and they aren't being queried in
critical performance paths, we'll just use linked lists here.
*/
typedef struct SDL_HintWatch {
SDL_HintCallback callback;
void *userdata;
struct SDL_HintWatch *next;
} SDL_HintWatch;
typedef struct SDL_Hint {
char *name;
char *value;
SDL_HintPriority priority;
SDL_HintWatch *callbacks;
struct SDL_Hint *next;
} SDL_Hint;
static SDL_Hint *SDL_hints;
SDL_bool
SDL_SetHintWithPriority(const char *name, const char *value,
SDL_HintPriority priority)
{
const char *env;
SDL_Hint *hint;
SDL_HintWatch *entry;
if (!name || !value) {
return SDL_FALSE;
}
env = SDL_getenv(name);
if (env && priority < SDL_HINT_OVERRIDE) {
return SDL_FALSE;
}
for (hint = SDL_hints; hint; hint = hint->next) {
if (SDL_strcmp(name, hint->name) == 0) {
if (priority < hint->priority) {
return SDL_FALSE;
}
if (!hint->value || !value || SDL_strcmp(hint->value, value) != 0) {
for (entry = hint->callbacks; entry; ) {
/* Save the next entry in case this one is deleted */
SDL_HintWatch *next = entry->next;
entry->callback(entry->userdata, name, hint->value, value);
entry = next;
}
if (hint->value) {
SDL_free(hint->value);
}
if (value) {
hint->value = SDL_strdup(value);
} else {
hint->value = NULL;
}
}
hint->priority = priority;
return SDL_TRUE;
}
}
/* Couldn't find the hint, add a new one */
hint = (SDL_Hint *)SDL_malloc(sizeof(*hint));
if (!hint) {
return SDL_FALSE;
}
hint->name = SDL_strdup(name);
hint->value = value ? SDL_strdup(value) : NULL;
hint->priority = priority;
hint->callbacks = NULL;
hint->next = SDL_hints;
SDL_hints = hint;
return SDL_TRUE;
}
SDL_bool
SDL_SetHint(const char *name, const char *value)
{
return SDL_SetHintWithPriority(name, value, SDL_HINT_NORMAL);
}
const char *
SDL_GetHint(const char *name)
{
const char *env;
SDL_Hint *hint;
env = SDL_getenv(name);
for (hint = SDL_hints; hint; hint = hint->next) {
if (SDL_strcmp(name, hint->name) == 0) {
if (!env || hint->priority == SDL_HINT_OVERRIDE) {
return hint->value;
}
break;
}
}
return env;
}
void
SDL_AddHintCallback(const char *name, SDL_HintCallback callback, void *userdata)
{
SDL_Hint *hint;
SDL_HintWatch *entry;
const char *value;
if (!name || !*name) {
SDL_InvalidParamError("name");
return;
}
if (!callback) {
SDL_InvalidParamError("callback");
return;
}
SDL_DelHintCallback(name, callback, userdata);
entry = (SDL_HintWatch *)SDL_malloc(sizeof(*entry));
entry->callback = callback;
entry->userdata = userdata;
for (hint = SDL_hints; hint; hint = hint->next) {
if (SDL_strcmp(name, hint->name) == 0) {
break;
}
}
if (!hint) {
/* Need to add a hint entry for this watcher */
hint = (SDL_Hint *)SDL_malloc(sizeof(*hint));
if (!hint) {
return;
}
hint->name = SDL_strdup(name);
hint->value = NULL;
hint->priority = SDL_HINT_DEFAULT;
hint->callbacks = NULL;
hint->next = SDL_hints;
SDL_hints = hint;
}
/* Add it to the callbacks for this hint */
entry->next = hint->callbacks;
hint->callbacks = entry;
/* Now call it with the current value */
value = SDL_GetHint(name);
callback(userdata, name, value, value);
}
void
SDL_DelHintCallback(const char *name, SDL_HintCallback callback, void *userdata)
{
SDL_Hint *hint;
SDL_HintWatch *entry, *prev;
for (hint = SDL_hints; hint; hint = hint->next) {
if (SDL_strcmp(name, hint->name) == 0) {
prev = NULL;
for (entry = hint->callbacks; entry; entry = entry->next) {
if (callback == entry->callback && userdata == entry->userdata) {
if (prev) {
prev->next = entry->next;
} else {
hint->callbacks = entry->next;
}
SDL_free(entry);
break;
}
prev = entry;
}
return;
}
}
}
void SDL_ClearHints(void)
{
SDL_Hint *hint;
SDL_HintWatch *entry;
while (SDL_hints) {
hint = SDL_hints;
SDL_hints = hint->next;
SDL_free(hint->name);
if (hint->value) {
SDL_free(hint->value);
}
for (entry = hint->callbacks; entry; ) {
SDL_HintWatch *freeable = entry;
entry = entry->next;
SDL_free(freeable);
}
SDL_free(hint);
}
}
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Simple log messages in SDL */
#include "SDL_log.h"
#if HAVE_STDIO_H
#include <stdio.h>
#endif
#if defined(__WIN32__)
#include "core/windows/SDL_windows.h"
#elif defined(__ANDROID__)
#include <android/log.h>
#endif
#define DEFAULT_PRIORITY SDL_LOG_PRIORITY_CRITICAL
#define DEFAULT_ASSERT_PRIORITY SDL_LOG_PRIORITY_WARN
#define DEFAULT_APPLICATION_PRIORITY SDL_LOG_PRIORITY_INFO
#define DEFAULT_TEST_PRIORITY SDL_LOG_PRIORITY_VERBOSE
/* Forward definition of error function */
extern int SDL_SetError(const char *fmt, ...);
typedef struct SDL_LogLevel
{
int category;
SDL_LogPriority priority;
struct SDL_LogLevel *next;
} SDL_LogLevel;
/* The default log output function */
static void SDL_LogOutput(void *userdata,
int category, SDL_LogPriority priority,
const char *message);
static SDL_LogLevel *SDL_loglevels;
static SDL_LogPriority SDL_default_priority = DEFAULT_PRIORITY;
static SDL_LogPriority SDL_assert_priority = DEFAULT_ASSERT_PRIORITY;
static SDL_LogPriority SDL_application_priority = DEFAULT_APPLICATION_PRIORITY;
static SDL_LogPriority SDL_test_priority = DEFAULT_TEST_PRIORITY;
static SDL_LogOutputFunction SDL_log_function = SDL_LogOutput;
static void *SDL_log_userdata = NULL;
static const char *SDL_priority_prefixes[SDL_NUM_LOG_PRIORITIES] = {
NULL,
"VERBOSE",
"DEBUG",
"INFO",
"WARN",
"ERROR",
"CRITICAL"
};
#ifdef __ANDROID__
static const char *SDL_category_prefixes[SDL_LOG_CATEGORY_RESERVED1] = {
"APP",
"ERROR",
"SYSTEM",
"AUDIO",
"VIDEO",
"RENDER",
"INPUT"
};
static int SDL_android_priority[SDL_NUM_LOG_PRIORITIES] = {
ANDROID_LOG_VERBOSE,
ANDROID_LOG_DEBUG,
ANDROID_LOG_INFO,
ANDROID_LOG_WARN,
ANDROID_LOG_ERROR,
ANDROID_LOG_FATAL
};
#endif /* __ANDROID__ */
void
SDL_LogSetAllPriority(SDL_LogPriority priority)
{
SDL_LogLevel *entry;
for (entry = SDL_loglevels; entry; entry = entry->next) {
entry->priority = priority;
}
SDL_default_priority = priority;
SDL_assert_priority = priority;
SDL_application_priority = priority;
}
void
SDL_LogSetPriority(int category, SDL_LogPriority priority)
{
SDL_LogLevel *entry;
for (entry = SDL_loglevels; entry; entry = entry->next) {
if (entry->category == category) {
entry->priority = priority;
return;
}
}
/* Create a new entry */
entry = (SDL_LogLevel *)SDL_malloc(sizeof(*entry));
if (entry) {
entry->category = category;
entry->priority = priority;
entry->next = SDL_loglevels;
SDL_loglevels = entry;
}
}
SDL_LogPriority
SDL_LogGetPriority(int category)
{
SDL_LogLevel *entry;
for (entry = SDL_loglevels; entry; entry = entry->next) {
if (entry->category == category) {
return entry->priority;
}
}
if (category == SDL_LOG_CATEGORY_TEST) {
return SDL_test_priority;
} else if (category == SDL_LOG_CATEGORY_APPLICATION) {
return SDL_application_priority;
} else if (category == SDL_LOG_CATEGORY_ASSERT) {
return SDL_assert_priority;
} else {
return SDL_default_priority;
}
}
void
SDL_LogResetPriorities(void)
{
SDL_LogLevel *entry;
while (SDL_loglevels) {
entry = SDL_loglevels;
SDL_loglevels = entry->next;
SDL_free(entry);
}
SDL_default_priority = DEFAULT_PRIORITY;
SDL_assert_priority = DEFAULT_ASSERT_PRIORITY;
SDL_application_priority = DEFAULT_APPLICATION_PRIORITY;
SDL_test_priority = DEFAULT_TEST_PRIORITY;
}
void
SDL_Log(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
SDL_LogMessageV(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, fmt, ap);
va_end(ap);
}
void
SDL_LogVerbose(int category, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
SDL_LogMessageV(category, SDL_LOG_PRIORITY_VERBOSE, fmt, ap);
va_end(ap);
}
void
SDL_LogDebug(int category, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
SDL_LogMessageV(category, SDL_LOG_PRIORITY_DEBUG, fmt, ap);
va_end(ap);
}
void
SDL_LogInfo(int category, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
SDL_LogMessageV(category, SDL_LOG_PRIORITY_INFO, fmt, ap);
va_end(ap);
}
void
SDL_LogWarn(int category, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
SDL_LogMessageV(category, SDL_LOG_PRIORITY_WARN, fmt, ap);
va_end(ap);
}
void
SDL_LogError(int category, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
SDL_LogMessageV(category, SDL_LOG_PRIORITY_ERROR, fmt, ap);
va_end(ap);
}
void
SDL_LogCritical(int category, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
SDL_LogMessageV(category, SDL_LOG_PRIORITY_CRITICAL, fmt, ap);
va_end(ap);
}
void
SDL_LogMessage(int category, SDL_LogPriority priority, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
SDL_LogMessageV(category, priority, fmt, ap);
va_end(ap);
}
#ifdef __ANDROID__
static const char *
GetCategoryPrefix(int category)
{
if (category < SDL_LOG_CATEGORY_RESERVED1) {
return SDL_category_prefixes[category];
}
if (category < SDL_LOG_CATEGORY_CUSTOM) {
return "RESERVED";
}
return "CUSTOM";
}
#endif /* __ANDROID__ */
void
SDL_LogMessageV(int category, SDL_LogPriority priority, const char *fmt, va_list ap)
{
char *message;
size_t len;
/* Nothing to do if we don't have an output function */
if (!SDL_log_function) {
return;
}
/* Make sure we don't exceed array bounds */
if ((int)priority < 0 || priority >= SDL_NUM_LOG_PRIORITIES) {
return;
}
/* See if we want to do anything with this message */
if (priority < SDL_LogGetPriority(category)) {
return;
}
message = SDL_stack_alloc(char, SDL_MAX_LOG_MESSAGE);
if (!message) {
return;
}
SDL_vsnprintf(message, SDL_MAX_LOG_MESSAGE, fmt, ap);
/* Chop off final endline. */
len = SDL_strlen(message);
if ((len > 0) && (message[len-1] == '\n')) {
message[--len] = '\0';
if ((len > 0) && (message[len-1] == '\r')) { /* catch "\r\n", too. */
message[--len] = '\0';
}
}
SDL_log_function(SDL_log_userdata, category, priority, message);
SDL_stack_free(message);
}
#if defined(__WIN32__)
/* Flag tracking the attachment of the console: 0=unattached, 1=attached, -1=error */
static int consoleAttached = 0;
/* Handle to stderr output of console. */
static HANDLE stderrHandle = NULL;
#endif
static void
SDL_LogOutput(void *userdata, int category, SDL_LogPriority priority,
const char *message)
{
#if defined(__WIN32__)
/* Way too many allocations here, urgh */
/* Note: One can't call SDL_SetError here, since that function itself logs. */
{
char *output;
size_t length;
LPTSTR tstr;
BOOL attachResult;
DWORD attachError;
unsigned long charsWritten;
/* Maybe attach console and get stderr handle */
if (consoleAttached == 0) {
attachResult = AttachConsole(ATTACH_PARENT_PROCESS);
if (!attachResult) {
attachError = GetLastError();
if (attachError == ERROR_INVALID_HANDLE) {
OutputDebugString(TEXT("Parent process has no console"));
consoleAttached = -1;
} else if (attachError == ERROR_GEN_FAILURE) {
OutputDebugString(TEXT("Could not attach to console of parent process"));
consoleAttached = -1;
} else if (attachError == ERROR_ACCESS_DENIED) {
/* Already attached */
consoleAttached = 1;
} else {
OutputDebugString(TEXT("Error attaching console"));
consoleAttached = -1;
}
} else {
/* Newly attached */
consoleAttached = 1;
}
if (consoleAttached == 1) {
stderrHandle = GetStdHandle(STD_ERROR_HANDLE);
}
}
length = SDL_strlen(SDL_priority_prefixes[priority]) + 2 + SDL_strlen(message) + 1 + 1;
output = SDL_stack_alloc(char, length);
SDL_snprintf(output, length, "%s: %s\n", SDL_priority_prefixes[priority], message);
tstr = WIN_UTF8ToString(output);
/* Output to debugger */
OutputDebugString(tstr);
/* Screen output to stderr, if console was attached. */
if (consoleAttached == 1) {
if (!WriteConsole(stderrHandle, tstr, lstrlen(tstr), &charsWritten, NULL)) {
OutputDebugString(TEXT("Error calling WriteConsole"));
}
if (charsWritten == ERROR_NOT_ENOUGH_MEMORY) {
OutputDebugString(TEXT("Insufficient heap memory to write message"));
}
}
SDL_free(tstr);
SDL_stack_free(output);
}
#elif defined(__ANDROID__)
{
char tag[32];
SDL_snprintf(tag, SDL_arraysize(tag), "SDL/%s", GetCategoryPrefix(category));
__android_log_write(SDL_android_priority[priority], tag, message);
}
#elif defined(__APPLE__) && defined(SDL_VIDEO_DRIVER_COCOA)
/* Technically we don't need SDL_VIDEO_DRIVER_COCOA, but that's where this function is defined for now.
*/
extern void SDL_NSLog(const char *text);
{
char *text;
text = SDL_stack_alloc(char, SDL_MAX_LOG_MESSAGE);
if (text) {
SDL_snprintf(text, SDL_MAX_LOG_MESSAGE, "%s: %s", SDL_priority_prefixes[priority], message);
SDL_NSLog(text);
SDL_stack_free(text);
return;
}
}
#elif defined(__PSP__)
{
FILE* pFile;
pFile = fopen ("SDL_Log.txt", "a");
fprintf(pFile, "%s: %s\n", SDL_priority_prefixes[priority], message);
fclose (pFile);
}
#endif
#if HAVE_STDIO_H
fprintf(stderr, "%s: %s\n", SDL_priority_prefixes[priority], message);
#endif
}
void
SDL_LogGetOutputFunction(SDL_LogOutputFunction *callback, void **userdata)
{
if (callback) {
*callback = SDL_log_function;
}
if (userdata) {
*userdata = SDL_log_userdata;
}
}
void
SDL_LogSetOutputFunction(SDL_LogOutputFunction callback, void *userdata)
{
SDL_log_function = callback;
SDL_log_userdata = userdata;
}
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "SDL_atomic.h"
/* Note that we undefine the atomic operations here, in case they are
defined as compiler intrinsics while building SDL but the library user
doesn't have that compiler. That way we always have a working set of
atomic operations built into the library.
*/
#undef SDL_AtomicCAS
#undef SDL_AtomicCASPtr
/*
If any of the operations are not provided then we must emulate some
of them. That means we need a nice implementation of spin locks
that avoids the "one big lock" problem. We use a vector of spin
locks and pick which one to use based on the address of the operand
of the function.
To generate the index of the lock we first shift by 3 bits to get
rid on the zero bits that result from 32 and 64 bit allignment of
data. We then mask off all but 5 bits and use those 5 bits as an
index into the table.
Picking the lock this way insures that accesses to the same data at
the same time will go to the same lock. OTOH, accesses to different
data have only a 1/32 chance of hitting the same lock. That should
pretty much eliminate the chances of several atomic operations on
different data from waiting on the same "big lock". If it isn't
then the table of locks can be expanded to a new size so long as
the new size is a power of two.
Contributed by Bob Pendleton, bob@pendleton.com
*/
static SDL_SpinLock locks[32];
static __inline__ void
enterLock(void *a)
{
uintptr_t index = ((((uintptr_t)a) >> 3) & 0x1f);
SDL_AtomicLock(&locks[index]);
}
static __inline__ void
leaveLock(void *a)
{
uintptr_t index = ((((uintptr_t)a) >> 3) & 0x1f);
SDL_AtomicUnlock(&locks[index]);
}
DECLSPEC SDL_bool SDLCALL
SDL_AtomicCAS(SDL_atomic_t *a, int oldval, int newval)
{
SDL_bool retval = SDL_FALSE;
enterLock(a);
if (a->value == oldval) {
a->value = newval;
retval = SDL_TRUE;
}
leaveLock(a);
return retval;
}
DECLSPEC SDL_bool SDLCALL
SDL_AtomicCASPtr(void **a, void *oldval, void *newval)
{
SDL_bool retval = SDL_FALSE;
enterLock(a);
if (*a == oldval) {
*a = newval;
retval = SDL_TRUE;
}
leaveLock(a);
return retval;
}
#if defined(__GNUC__) && defined(__arm__) && \
(defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__))
__asm__(
" .align 2\n"
" .globl _SDL_MemoryBarrierRelease\n"
" .globl _SDL_MemoryBarrierAcquire\n"
"_SDL_MemoryBarrierRelease:\n"
"_SDL_MemoryBarrierAcquire:\n"
" mov r0, #0\n"
" mcr p15, 0, r0, c7, c10, 5\n"
" bx lr\n"
);
#endif /* __GNUC__ && __arm__ && ARMV6 */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "SDL_atomic.h"
#include "SDL_mutex.h"
#include "SDL_timer.h"
/* Don't do the check for Visual Studio 2005, it's safe here */
#ifdef __WIN32__
#include "../core/windows/SDL_windows.h"
#endif
/* This function is where all the magic happens... */
SDL_bool
SDL_AtomicTryLock(SDL_SpinLock *lock)
{
#if SDL_ATOMIC_DISABLED
/* Terrible terrible damage */
static SDL_mutex *_spinlock_mutex;
if (!_spinlock_mutex) {
/* Race condition on first lock... */
_spinlock_mutex = SDL_CreateMutex();
}
SDL_LockMutex(_spinlock_mutex);
if (*lock == 0) {
*lock = 1;
SDL_UnlockMutex(_spinlock_mutex);
return SDL_TRUE;
} else {
SDL_UnlockMutex(_spinlock_mutex);
return SDL_FALSE;
}
#elif defined(_MSC_VER)
SDL_COMPILE_TIME_ASSERT(locksize, sizeof(*lock) == sizeof(long));
return (InterlockedExchange((long*)lock, 1) == 0);
#elif HAVE_GCC_ATOMICS || HAVE_GCC_SYNC_LOCK_TEST_AND_SET
return (__sync_lock_test_and_set(lock, 1) == 0);
#elif defined(__GNUC__) && defined(__arm__) && \
(defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || \
defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5TE__) || \
defined(__ARM_ARCH_5TEJ__))
int result;
__asm__ __volatile__ (
"swp %0, %1, [%2]\n"
: "=&r,&r" (result) : "r,0" (1), "r,r" (lock) : "memory");
return (result == 0);
#elif defined(__GNUC__) && defined(__arm__)
int result;
__asm__ __volatile__ (
"ldrex %0, [%2]\nteq %0, #0\nstrexeq %0, %1, [%2]"
: "=&r" (result) : "r" (1), "r" (lock) : "cc", "memory");
return (result == 0);
#elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
int result;
__asm__ __volatile__(
"lock ; xchgl %0, (%1)\n"
: "=r" (result) : "r" (lock), "0" (1) : "cc", "memory");
return (result == 0);
#elif defined(__MACOSX__) || defined(__IPHONEOS__)
/* Maybe used for PowerPC, but the Intel asm or gcc atomics are favored. */
return OSAtomicCompareAndSwap32Barrier(0, 1, lock);
#elif HAVE_PTHREAD_SPINLOCK
/* pthread instructions */
return (pthread_spin_trylock(lock) == 0);
#else
#error Please implement for your platform.
return SDL_FALSE;
#endif
}
void
SDL_AtomicLock(SDL_SpinLock *lock)
{
/* FIXME: Should we have an eventual timeout? */
while (!SDL_AtomicTryLock(lock)) {
SDL_Delay(0);
}
}
void
SDL_AtomicUnlock(SDL_SpinLock *lock)
{
#if defined(_MSC_VER)
_ReadWriteBarrier();
*lock = 0;
#elif HAVE_GCC_ATOMICS || HAVE_GCC_SYNC_LOCK_TEST_AND_SET
__sync_lock_release(lock);
#elif HAVE_PTHREAD_SPINLOCK
pthread_spin_unlock(lock);
#else
*lock = 0;
#endif
}
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Functions and variables exported from SDL_audio.c for SDL_sysaudio.c */
/* Functions to get a list of "close" audio formats */
extern SDL_AudioFormat SDL_FirstAudioFormat(SDL_AudioFormat format);
extern SDL_AudioFormat SDL_NextAudioFormat(void);
/* Function to calculate the size and silence for a SDL_AudioSpec */
extern void SDL_CalculateAudioSpec(SDL_AudioSpec * spec);
/* The actual mixing thread function */
extern int SDLCALL SDL_RunAudio(void *audiop);
/* this is used internally to access some autogenerated code. */
typedef struct
{
SDL_AudioFormat src_fmt;
SDL_AudioFormat dst_fmt;
SDL_AudioFilter filter;
} SDL_AudioTypeFilters;
extern const SDL_AudioTypeFilters sdl_audio_type_filters[];
/* this is used internally to access some autogenerated code. */
typedef struct
{
SDL_AudioFormat fmt;
int channels;
int upsample;
int multiple;
SDL_AudioFilter filter;
} SDL_AudioRateFilters;
extern const SDL_AudioRateFilters sdl_audio_rate_filters[];
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Get the name of the audio device we use for output */
#if SDL_AUDIO_DRIVER_BSD || SDL_AUDIO_DRIVER_OSS || SDL_AUDIO_DRIVER_SUNAUDIO
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h> /* For close() */
#include "SDL_stdinc.h"
#include "SDL_audiodev_c.h"
#ifndef _PATH_DEV_DSP
#if defined(__NETBSD__) || defined(__OPENBSD__)
#define _PATH_DEV_DSP "/dev/audio"
#else
#define _PATH_DEV_DSP "/dev/dsp"
#endif
#endif
#ifndef _PATH_DEV_DSP24
#define _PATH_DEV_DSP24 "/dev/sound/dsp"
#endif
#ifndef _PATH_DEV_AUDIO
#define _PATH_DEV_AUDIO "/dev/audio"
#endif
static inline void
test_device(const char *fname, int flags, int (*test) (int fd),
SDL_AddAudioDevice addfn)
{
struct stat sb;
if ((stat(fname, &sb) == 0) && (S_ISCHR(sb.st_mode))) {
const int audio_fd = open(fname, flags, 0);
if (audio_fd >= 0) {
if (test(audio_fd)) {
addfn(fname);
}
close(audio_fd);
}
}
}
static int
test_stub(int fd)
{
return 1;
}
void
SDL_EnumUnixAudioDevices(int iscapture, int classic, int (*test)(int fd),
SDL_AddAudioDevice addfn)
{
const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
const char *audiodev;
char audiopath[1024];
if (test == NULL)
test = test_stub;
/* Figure out what our audio device is */
if (((audiodev = SDL_getenv("SDL_PATH_DSP")) == NULL) &&
((audiodev = SDL_getenv("AUDIODEV")) == NULL)) {
if (classic) {
audiodev = _PATH_DEV_AUDIO;
} else {
struct stat sb;
/* Added support for /dev/sound/\* in Linux 2.4 */
if (((stat("/dev/sound", &sb) == 0) && S_ISDIR(sb.st_mode))
&& ((stat(_PATH_DEV_DSP24, &sb) == 0)
&& S_ISCHR(sb.st_mode))) {
audiodev = _PATH_DEV_DSP24;
} else {
audiodev = _PATH_DEV_DSP;
}
}
}
test_device(audiodev, flags, test, addfn);
if (SDL_strlen(audiodev) < (sizeof(audiopath) - 3)) {
int instance = 0;
while (instance++ <= 64) {
SDL_snprintf(audiopath, SDL_arraysize(audiopath),
"%s%d", audiodev, instance);
test_device(audiopath, flags, test, addfn);
}
}
}
#endif /* Audio driver selection */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL.h"
#include "SDL_config.h"
#include "SDL_sysaudio.h"
/* Open the audio device for playback, and don't block if busy */
/* #define USE_BLOCKING_WRITES */
#ifdef USE_BLOCKING_WRITES
#define OPEN_FLAGS_OUTPUT O_WRONLY
#define OPEN_FLAGS_INPUT O_RDONLY
#else
#define OPEN_FLAGS_OUTPUT (O_WRONLY|O_NONBLOCK)
#define OPEN_FLAGS_INPUT (O_RDONLY|O_NONBLOCK)
#endif
void SDL_EnumUnixAudioDevices(int iscapture, int classic,
int (*test) (int fd), SDL_AddAudioDevice addfn);
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#define SDL_AllocAudioMem SDL_malloc
#define SDL_FreeAudioMem SDL_free
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* This provides the default mixing callback for the SDL audio routines */
#include "SDL_cpuinfo.h"
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "SDL_sysaudio.h"
/* This table is used to add two sound values together and pin
* the value to avoid overflow. (used with permission from ARDI)
* Changed to use 0xFE instead of 0xFF for better sound quality.
*/
static const Uint8 mix8[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03,
0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,
0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24,
0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A,
0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45,
0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,
0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B,
0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71,
0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C,
0x7D, 0x7E, 0x7F, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92,
0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D,
0x9E, 0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3,
0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE,
0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9,
0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4,
0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA,
0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5,
0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE
};
/* The volume ranges from 0 - 128 */
#define ADJUST_VOLUME(s, v) (s = (s*v)/SDL_MIX_MAXVOLUME)
#define ADJUST_VOLUME_U8(s, v) (s = (((s-128)*v)/SDL_MIX_MAXVOLUME)+128)
void
SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format,
Uint32 len, int volume)
{
if (volume == 0) {
return;
}
switch (format) {
case AUDIO_U8:
{
#if defined(__GNUC__) && defined(__M68000__) && !defined(__mcoldfire__) && defined(SDL_ASSEMBLY_ROUTINES)
SDL_MixAudio_m68k_U8((char *) dst, (char *) src,
(unsigned long) len, (long) volume,
(char *) mix8);
#else
Uint8 src_sample;
while (len--) {
src_sample = *src;
ADJUST_VOLUME_U8(src_sample, volume);
*dst = mix8[*dst + src_sample];
++dst;
++src;
}
#endif
}
break;
case AUDIO_S8:
{
Sint8 *dst8, *src8;
Sint8 src_sample;
int dst_sample;
const int max_audioval = ((1 << (8 - 1)) - 1);
const int min_audioval = -(1 << (8 - 1));
src8 = (Sint8 *) src;
dst8 = (Sint8 *) dst;
while (len--) {
src_sample = *src8;
ADJUST_VOLUME(src_sample, volume);
dst_sample = *dst8 + src_sample;
if (dst_sample > max_audioval) {
*dst8 = max_audioval;
} else if (dst_sample < min_audioval) {
*dst8 = min_audioval;
} else {
*dst8 = dst_sample;
}
++dst8;
++src8;
}
}
break;
case AUDIO_S16LSB:
{
Sint16 src1, src2;
int dst_sample;
const int max_audioval = ((1 << (16 - 1)) - 1);
const int min_audioval = -(1 << (16 - 1));
len /= 2;
while (len--) {
src1 = ((src[1]) << 8 | src[0]);
ADJUST_VOLUME(src1, volume);
src2 = ((dst[1]) << 8 | dst[0]);
src += 2;
dst_sample = src1 + src2;
if (dst_sample > max_audioval) {
dst_sample = max_audioval;
} else if (dst_sample < min_audioval) {
dst_sample = min_audioval;
}
dst[0] = dst_sample & 0xFF;
dst_sample >>= 8;
dst[1] = dst_sample & 0xFF;
dst += 2;
}
}
break;
case AUDIO_S16MSB:
{
#if defined(__GNUC__) && defined(__M68000__) && !defined(__mcoldfire__) && defined(SDL_ASSEMBLY_ROUTINES)
SDL_MixAudio_m68k_S16MSB((short *) dst, (short *) src,
(unsigned long) len, (long) volume);
#else
Sint16 src1, src2;
int dst_sample;
const int max_audioval = ((1 << (16 - 1)) - 1);
const int min_audioval = -(1 << (16 - 1));
len /= 2;
while (len--) {
src1 = ((src[0]) << 8 | src[1]);
ADJUST_VOLUME(src1, volume);
src2 = ((dst[0]) << 8 | dst[1]);
src += 2;
dst_sample = src1 + src2;
if (dst_sample > max_audioval) {
dst_sample = max_audioval;
} else if (dst_sample < min_audioval) {
dst_sample = min_audioval;
}
dst[1] = dst_sample & 0xFF;
dst_sample >>= 8;
dst[0] = dst_sample & 0xFF;
dst += 2;
}
#endif
}
break;
case AUDIO_S32LSB:
{
const Uint32 *src32 = (Uint32 *) src;
Uint32 *dst32 = (Uint32 *) dst;
Sint64 src1, src2;
Sint64 dst_sample;
const Sint64 max_audioval = ((((Sint64) 1) << (32 - 1)) - 1);
const Sint64 min_audioval = -(((Sint64) 1) << (32 - 1));
len /= 4;
while (len--) {
src1 = (Sint64) ((Sint32) SDL_SwapLE32(*src32));
src32++;
ADJUST_VOLUME(src1, volume);
src2 = (Sint64) ((Sint32) SDL_SwapLE32(*dst32));
dst_sample = src1 + src2;
if (dst_sample > max_audioval) {
dst_sample = max_audioval;
} else if (dst_sample < min_audioval) {
dst_sample = min_audioval;
}
*(dst32++) = SDL_SwapLE32((Uint32) ((Sint32) dst_sample));
}
}
break;
case AUDIO_S32MSB:
{
const Uint32 *src32 = (Uint32 *) src;
Uint32 *dst32 = (Uint32 *) dst;
Sint64 src1, src2;
Sint64 dst_sample;
const Sint64 max_audioval = ((((Sint64) 1) << (32 - 1)) - 1);
const Sint64 min_audioval = -(((Sint64) 1) << (32 - 1));
len /= 4;
while (len--) {
src1 = (Sint64) ((Sint32) SDL_SwapBE32(*src32));
src32++;
ADJUST_VOLUME(src1, volume);
src2 = (Sint64) ((Sint32) SDL_SwapBE32(*dst32));
dst_sample = src1 + src2;
if (dst_sample > max_audioval) {
dst_sample = max_audioval;
} else if (dst_sample < min_audioval) {
dst_sample = min_audioval;
}
*(dst32++) = SDL_SwapBE32((Uint32) ((Sint32) dst_sample));
}
}
break;
case AUDIO_F32LSB:
{
const float fmaxvolume = 1.0f / ((float) SDL_MIX_MAXVOLUME);
const float fvolume = (float) volume;
const float *src32 = (float *) src;
float *dst32 = (float *) dst;
float src1, src2;
double dst_sample;
/* !!! FIXME: are these right? */
const double max_audioval = 3.402823466e+38F;
const double min_audioval = -3.402823466e+38F;
len /= 4;
while (len--) {
src1 = ((SDL_SwapFloatLE(*src32) * fvolume) * fmaxvolume);
src2 = SDL_SwapFloatLE(*dst32);
src32++;
dst_sample = ((double) src1) + ((double) src2);
if (dst_sample > max_audioval) {
dst_sample = max_audioval;
} else if (dst_sample < min_audioval) {
dst_sample = min_audioval;
}
*(dst32++) = SDL_SwapFloatLE((float) dst_sample);
}
}
break;
case AUDIO_F32MSB:
{
const float fmaxvolume = 1.0f / ((float) SDL_MIX_MAXVOLUME);
const float fvolume = (float) volume;
const float *src32 = (float *) src;
float *dst32 = (float *) dst;
float src1, src2;
double dst_sample;
/* !!! FIXME: are these right? */
const double max_audioval = 3.402823466e+38F;
const double min_audioval = -3.402823466e+38F;
len /= 4;
while (len--) {
src1 = ((SDL_SwapFloatBE(*src32) * fvolume) * fmaxvolume);
src2 = SDL_SwapFloatBE(*dst32);
src32++;
dst_sample = ((double) src1) + ((double) src2);
if (dst_sample > max_audioval) {
dst_sample = max_audioval;
} else if (dst_sample < min_audioval) {
dst_sample = min_audioval;
}
*(dst32++) = SDL_SwapFloatBE((float) dst_sample);
}
}
break;
default: /* If this happens... FIXME! */
SDL_SetError("SDL_MixAudio(): unknown audio format");
return;
}
}
/* vi: set ts=4 sw=4 expandtab: */

138
src/audio/SDL_sysaudio.h Normal file
View File

@@ -0,0 +1,138 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_sysaudio_h
#define _SDL_sysaudio_h
#include "SDL_mutex.h"
#include "SDL_thread.h"
/* The SDL audio driver */
typedef struct SDL_AudioDevice SDL_AudioDevice;
#define _THIS SDL_AudioDevice *_this
/* Used by audio targets during DetectDevices() */
typedef void (*SDL_AddAudioDevice)(const char *name);
typedef struct SDL_AudioDriverImpl
{
void (*DetectDevices) (int iscapture, SDL_AddAudioDevice addfn);
int (*OpenDevice) (_THIS, const char *devname, int iscapture);
void (*ThreadInit) (_THIS); /* Called by audio thread at start */
void (*WaitDevice) (_THIS);
void (*PlayDevice) (_THIS);
Uint8 *(*GetDeviceBuf) (_THIS);
void (*WaitDone) (_THIS);
void (*CloseDevice) (_THIS);
void (*LockDevice) (_THIS);
void (*UnlockDevice) (_THIS);
void (*Deinitialize) (void);
/* !!! FIXME: add pause(), so we can optimize instead of mixing silence. */
/* Some flags to push duplicate code into the core and reduce #ifdefs. */
int ProvidesOwnCallbackThread;
int SkipMixerLock; /* !!! FIXME: do we need this anymore? */
int HasCaptureSupport;
int OnlyHasDefaultOutputDevice;
int OnlyHasDefaultInputDevice;
} SDL_AudioDriverImpl;
typedef struct SDL_AudioDriver
{
/* * * */
/* The name of this audio driver */
const char *name;
/* * * */
/* The description of this audio driver */
const char *desc;
SDL_AudioDriverImpl impl;
char **outputDevices;
int outputDeviceCount;
char **inputDevices;
int inputDeviceCount;
} SDL_AudioDriver;
/* Streamer */
typedef struct
{
Uint8 *buffer;
int max_len; /* the maximum length in bytes */
int read_pos, write_pos; /* the position of the write and read heads in bytes */
} SDL_AudioStreamer;
/* Define the SDL audio driver structure */
struct SDL_AudioDevice
{
/* * * */
/* Data common to all devices */
/* The current audio specification (shared with audio thread) */
SDL_AudioSpec spec;
/* An audio conversion block for audio format emulation */
SDL_AudioCVT convert;
/* The streamer, if sample rate conversion necessitates it */
int use_streamer;
SDL_AudioStreamer streamer;
/* Current state flags */
int iscapture;
int enabled;
int paused;
int opened;
/* Fake audio buffer for when the audio hardware is busy */
Uint8 *fake_stream;
/* A semaphore for locking the mixing buffers */
SDL_mutex *mixer_lock;
/* A thread to feed the audio device */
SDL_Thread *thread;
SDL_threadID threadid;
/* * * */
/* Data private to this driver */
struct SDL_PrivateAudioData *hidden;
};
#undef _THIS
typedef struct AudioBootStrap
{
const char *name;
const char *desc;
int (*init) (SDL_AudioDriverImpl * impl);
int demand_only; /* 1==request explicitly, or it won't be available. */
} AudioBootStrap;
#endif /* _SDL_sysaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

631
src/audio/SDL_wave.c Normal file
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@@ -0,0 +1,631 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Microsoft WAVE file loading routines */
#include "SDL_audio.h"
#include "SDL_wave.h"
static int ReadChunk(SDL_RWops * src, Chunk * chunk);
struct MS_ADPCM_decodestate
{
Uint8 hPredictor;
Uint16 iDelta;
Sint16 iSamp1;
Sint16 iSamp2;
};
static struct MS_ADPCM_decoder
{
WaveFMT wavefmt;
Uint16 wSamplesPerBlock;
Uint16 wNumCoef;
Sint16 aCoeff[7][2];
/* * * */
struct MS_ADPCM_decodestate state[2];
} MS_ADPCM_state;
static int
InitMS_ADPCM(WaveFMT * format)
{
Uint8 *rogue_feel;
int i;
/* Set the rogue pointer to the MS_ADPCM specific data */
MS_ADPCM_state.wavefmt.encoding = SDL_SwapLE16(format->encoding);
MS_ADPCM_state.wavefmt.channels = SDL_SwapLE16(format->channels);
MS_ADPCM_state.wavefmt.frequency = SDL_SwapLE32(format->frequency);
MS_ADPCM_state.wavefmt.byterate = SDL_SwapLE32(format->byterate);
MS_ADPCM_state.wavefmt.blockalign = SDL_SwapLE16(format->blockalign);
MS_ADPCM_state.wavefmt.bitspersample =
SDL_SwapLE16(format->bitspersample);
rogue_feel = (Uint8 *) format + sizeof(*format);
if (sizeof(*format) == 16) {
/*const Uint16 extra_info = ((rogue_feel[1] << 8) | rogue_feel[0]);*/
rogue_feel += sizeof(Uint16);
}
MS_ADPCM_state.wSamplesPerBlock = ((rogue_feel[1] << 8) | rogue_feel[0]);
rogue_feel += sizeof(Uint16);
MS_ADPCM_state.wNumCoef = ((rogue_feel[1] << 8) | rogue_feel[0]);
rogue_feel += sizeof(Uint16);
if (MS_ADPCM_state.wNumCoef != 7) {
SDL_SetError("Unknown set of MS_ADPCM coefficients");
return (-1);
}
for (i = 0; i < MS_ADPCM_state.wNumCoef; ++i) {
MS_ADPCM_state.aCoeff[i][0] = ((rogue_feel[1] << 8) | rogue_feel[0]);
rogue_feel += sizeof(Uint16);
MS_ADPCM_state.aCoeff[i][1] = ((rogue_feel[1] << 8) | rogue_feel[0]);
rogue_feel += sizeof(Uint16);
}
return (0);
}
static Sint32
MS_ADPCM_nibble(struct MS_ADPCM_decodestate *state,
Uint8 nybble, Sint16 * coeff)
{
const Sint32 max_audioval = ((1 << (16 - 1)) - 1);
const Sint32 min_audioval = -(1 << (16 - 1));
const Sint32 adaptive[] = {
230, 230, 230, 230, 307, 409, 512, 614,
768, 614, 512, 409, 307, 230, 230, 230
};
Sint32 new_sample, delta;
new_sample = ((state->iSamp1 * coeff[0]) +
(state->iSamp2 * coeff[1])) / 256;
if (nybble & 0x08) {
new_sample += state->iDelta * (nybble - 0x10);
} else {
new_sample += state->iDelta * nybble;
}
if (new_sample < min_audioval) {
new_sample = min_audioval;
} else if (new_sample > max_audioval) {
new_sample = max_audioval;
}
delta = ((Sint32) state->iDelta * adaptive[nybble]) / 256;
if (delta < 16) {
delta = 16;
}
state->iDelta = (Uint16) delta;
state->iSamp2 = state->iSamp1;
state->iSamp1 = (Sint16) new_sample;
return (new_sample);
}
static int
MS_ADPCM_decode(Uint8 ** audio_buf, Uint32 * audio_len)
{
struct MS_ADPCM_decodestate *state[2];
Uint8 *freeable, *encoded, *decoded;
Sint32 encoded_len, samplesleft;
Sint8 nybble, stereo;
Sint16 *coeff[2];
Sint32 new_sample;
/* Allocate the proper sized output buffer */
encoded_len = *audio_len;
encoded = *audio_buf;
freeable = *audio_buf;
*audio_len = (encoded_len / MS_ADPCM_state.wavefmt.blockalign) *
MS_ADPCM_state.wSamplesPerBlock *
MS_ADPCM_state.wavefmt.channels * sizeof(Sint16);
*audio_buf = (Uint8 *) SDL_malloc(*audio_len);
if (*audio_buf == NULL) {
return SDL_OutOfMemory();
}
decoded = *audio_buf;
/* Get ready... Go! */
stereo = (MS_ADPCM_state.wavefmt.channels == 2);
state[0] = &MS_ADPCM_state.state[0];
state[1] = &MS_ADPCM_state.state[stereo];
while (encoded_len >= MS_ADPCM_state.wavefmt.blockalign) {
/* Grab the initial information for this block */
state[0]->hPredictor = *encoded++;
if (stereo) {
state[1]->hPredictor = *encoded++;
}
state[0]->iDelta = ((encoded[1] << 8) | encoded[0]);
encoded += sizeof(Sint16);
if (stereo) {
state[1]->iDelta = ((encoded[1] << 8) | encoded[0]);
encoded += sizeof(Sint16);
}
state[0]->iSamp1 = ((encoded[1] << 8) | encoded[0]);
encoded += sizeof(Sint16);
if (stereo) {
state[1]->iSamp1 = ((encoded[1] << 8) | encoded[0]);
encoded += sizeof(Sint16);
}
state[0]->iSamp2 = ((encoded[1] << 8) | encoded[0]);
encoded += sizeof(Sint16);
if (stereo) {
state[1]->iSamp2 = ((encoded[1] << 8) | encoded[0]);
encoded += sizeof(Sint16);
}
coeff[0] = MS_ADPCM_state.aCoeff[state[0]->hPredictor];
coeff[1] = MS_ADPCM_state.aCoeff[state[1]->hPredictor];
/* Store the two initial samples we start with */
decoded[0] = state[0]->iSamp2 & 0xFF;
decoded[1] = state[0]->iSamp2 >> 8;
decoded += 2;
if (stereo) {
decoded[0] = state[1]->iSamp2 & 0xFF;
decoded[1] = state[1]->iSamp2 >> 8;
decoded += 2;
}
decoded[0] = state[0]->iSamp1 & 0xFF;
decoded[1] = state[0]->iSamp1 >> 8;
decoded += 2;
if (stereo) {
decoded[0] = state[1]->iSamp1 & 0xFF;
decoded[1] = state[1]->iSamp1 >> 8;
decoded += 2;
}
/* Decode and store the other samples in this block */
samplesleft = (MS_ADPCM_state.wSamplesPerBlock - 2) *
MS_ADPCM_state.wavefmt.channels;
while (samplesleft > 0) {
nybble = (*encoded) >> 4;
new_sample = MS_ADPCM_nibble(state[0], nybble, coeff[0]);
decoded[0] = new_sample & 0xFF;
new_sample >>= 8;
decoded[1] = new_sample & 0xFF;
decoded += 2;
nybble = (*encoded) & 0x0F;
new_sample = MS_ADPCM_nibble(state[1], nybble, coeff[1]);
decoded[0] = new_sample & 0xFF;
new_sample >>= 8;
decoded[1] = new_sample & 0xFF;
decoded += 2;
++encoded;
samplesleft -= 2;
}
encoded_len -= MS_ADPCM_state.wavefmt.blockalign;
}
SDL_free(freeable);
return (0);
}
struct IMA_ADPCM_decodestate
{
Sint32 sample;
Sint8 index;
};
static struct IMA_ADPCM_decoder
{
WaveFMT wavefmt;
Uint16 wSamplesPerBlock;
/* * * */
struct IMA_ADPCM_decodestate state[2];
} IMA_ADPCM_state;
static int
InitIMA_ADPCM(WaveFMT * format)
{
Uint8 *rogue_feel;
/* Set the rogue pointer to the IMA_ADPCM specific data */
IMA_ADPCM_state.wavefmt.encoding = SDL_SwapLE16(format->encoding);
IMA_ADPCM_state.wavefmt.channels = SDL_SwapLE16(format->channels);
IMA_ADPCM_state.wavefmt.frequency = SDL_SwapLE32(format->frequency);
IMA_ADPCM_state.wavefmt.byterate = SDL_SwapLE32(format->byterate);
IMA_ADPCM_state.wavefmt.blockalign = SDL_SwapLE16(format->blockalign);
IMA_ADPCM_state.wavefmt.bitspersample =
SDL_SwapLE16(format->bitspersample);
rogue_feel = (Uint8 *) format + sizeof(*format);
if (sizeof(*format) == 16) {
/*const Uint16 extra_info = ((rogue_feel[1] << 8) | rogue_feel[0]);*/
rogue_feel += sizeof(Uint16);
}
IMA_ADPCM_state.wSamplesPerBlock = ((rogue_feel[1] << 8) | rogue_feel[0]);
return (0);
}
static Sint32
IMA_ADPCM_nibble(struct IMA_ADPCM_decodestate *state, Uint8 nybble)
{
const Sint32 max_audioval = ((1 << (16 - 1)) - 1);
const Sint32 min_audioval = -(1 << (16 - 1));
const int index_table[16] = {
-1, -1, -1, -1,
2, 4, 6, 8,
-1, -1, -1, -1,
2, 4, 6, 8
};
const Sint32 step_table[89] = {
7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19, 21, 23, 25, 28, 31,
34, 37, 41, 45, 50, 55, 60, 66, 73, 80, 88, 97, 107, 118, 130,
143, 157, 173, 190, 209, 230, 253, 279, 307, 337, 371, 408,
449, 494, 544, 598, 658, 724, 796, 876, 963, 1060, 1166, 1282,
1411, 1552, 1707, 1878, 2066, 2272, 2499, 2749, 3024, 3327,
3660, 4026, 4428, 4871, 5358, 5894, 6484, 7132, 7845, 8630,
9493, 10442, 11487, 12635, 13899, 15289, 16818, 18500, 20350,
22385, 24623, 27086, 29794, 32767
};
Sint32 delta, step;
/* Compute difference and new sample value */
if (state->index > 88) {
state->index = 88;
} else if (state->index < 0) {
state->index = 0;
}
step = step_table[state->index];
delta = step >> 3;
if (nybble & 0x04)
delta += step;
if (nybble & 0x02)
delta += (step >> 1);
if (nybble & 0x01)
delta += (step >> 2);
if (nybble & 0x08)
delta = -delta;
state->sample += delta;
/* Update index value */
state->index += index_table[nybble];
/* Clamp output sample */
if (state->sample > max_audioval) {
state->sample = max_audioval;
} else if (state->sample < min_audioval) {
state->sample = min_audioval;
}
return (state->sample);
}
/* Fill the decode buffer with a channel block of data (8 samples) */
static void
Fill_IMA_ADPCM_block(Uint8 * decoded, Uint8 * encoded,
int channel, int numchannels,
struct IMA_ADPCM_decodestate *state)
{
int i;
Sint8 nybble;
Sint32 new_sample;
decoded += (channel * 2);
for (i = 0; i < 4; ++i) {
nybble = (*encoded) & 0x0F;
new_sample = IMA_ADPCM_nibble(state, nybble);
decoded[0] = new_sample & 0xFF;
new_sample >>= 8;
decoded[1] = new_sample & 0xFF;
decoded += 2 * numchannels;
nybble = (*encoded) >> 4;
new_sample = IMA_ADPCM_nibble(state, nybble);
decoded[0] = new_sample & 0xFF;
new_sample >>= 8;
decoded[1] = new_sample & 0xFF;
decoded += 2 * numchannels;
++encoded;
}
}
static int
IMA_ADPCM_decode(Uint8 ** audio_buf, Uint32 * audio_len)
{
struct IMA_ADPCM_decodestate *state;
Uint8 *freeable, *encoded, *decoded;
Sint32 encoded_len, samplesleft;
unsigned int c, channels;
/* Check to make sure we have enough variables in the state array */
channels = IMA_ADPCM_state.wavefmt.channels;
if (channels > SDL_arraysize(IMA_ADPCM_state.state)) {
SDL_SetError("IMA ADPCM decoder can only handle %d channels",
SDL_arraysize(IMA_ADPCM_state.state));
return (-1);
}
state = IMA_ADPCM_state.state;
/* Allocate the proper sized output buffer */
encoded_len = *audio_len;
encoded = *audio_buf;
freeable = *audio_buf;
*audio_len = (encoded_len / IMA_ADPCM_state.wavefmt.blockalign) *
IMA_ADPCM_state.wSamplesPerBlock *
IMA_ADPCM_state.wavefmt.channels * sizeof(Sint16);
*audio_buf = (Uint8 *) SDL_malloc(*audio_len);
if (*audio_buf == NULL) {
return SDL_OutOfMemory();
}
decoded = *audio_buf;
/* Get ready... Go! */
while (encoded_len >= IMA_ADPCM_state.wavefmt.blockalign) {
/* Grab the initial information for this block */
for (c = 0; c < channels; ++c) {
/* Fill the state information for this block */
state[c].sample = ((encoded[1] << 8) | encoded[0]);
encoded += 2;
if (state[c].sample & 0x8000) {
state[c].sample -= 0x10000;
}
state[c].index = *encoded++;
/* Reserved byte in buffer header, should be 0 */
if (*encoded++ != 0) {
/* Uh oh, corrupt data? Buggy code? */ ;
}
/* Store the initial sample we start with */
decoded[0] = (Uint8) (state[c].sample & 0xFF);
decoded[1] = (Uint8) (state[c].sample >> 8);
decoded += 2;
}
/* Decode and store the other samples in this block */
samplesleft = (IMA_ADPCM_state.wSamplesPerBlock - 1) * channels;
while (samplesleft > 0) {
for (c = 0; c < channels; ++c) {
Fill_IMA_ADPCM_block(decoded, encoded,
c, channels, &state[c]);
encoded += 4;
samplesleft -= 8;
}
decoded += (channels * 8 * 2);
}
encoded_len -= IMA_ADPCM_state.wavefmt.blockalign;
}
SDL_free(freeable);
return (0);
}
SDL_AudioSpec *
SDL_LoadWAV_RW(SDL_RWops * src, int freesrc,
SDL_AudioSpec * spec, Uint8 ** audio_buf, Uint32 * audio_len)
{
int was_error;
Chunk chunk;
int lenread;
int IEEE_float_encoded, MS_ADPCM_encoded, IMA_ADPCM_encoded;
int samplesize;
/* WAV magic header */
Uint32 RIFFchunk;
Uint32 wavelen = 0;
Uint32 WAVEmagic;
Uint32 headerDiff = 0;
/* FMT chunk */
WaveFMT *format = NULL;
SDL_zero(chunk);
/* Make sure we are passed a valid data source */
was_error = 0;
if (src == NULL) {
was_error = 1;
goto done;
}
/* Check the magic header */
RIFFchunk = SDL_ReadLE32(src);
wavelen = SDL_ReadLE32(src);
if (wavelen == WAVE) { /* The RIFFchunk has already been read */
WAVEmagic = wavelen;
wavelen = RIFFchunk;
RIFFchunk = RIFF;
} else {
WAVEmagic = SDL_ReadLE32(src);
}
if ((RIFFchunk != RIFF) || (WAVEmagic != WAVE)) {
SDL_SetError("Unrecognized file type (not WAVE)");
was_error = 1;
goto done;
}
headerDiff += sizeof(Uint32); /* for WAVE */
/* Read the audio data format chunk */
chunk.data = NULL;
do {
if (chunk.data != NULL) {
SDL_free(chunk.data);
chunk.data = NULL;
}
lenread = ReadChunk(src, &chunk);
if (lenread < 0) {
was_error = 1;
goto done;
}
/* 2 Uint32's for chunk header+len, plus the lenread */
headerDiff += lenread + 2 * sizeof(Uint32);
} while ((chunk.magic == FACT) || (chunk.magic == LIST));
/* Decode the audio data format */
format = (WaveFMT *) chunk.data;
if (chunk.magic != FMT) {
SDL_SetError("Complex WAVE files not supported");
was_error = 1;
goto done;
}
IEEE_float_encoded = MS_ADPCM_encoded = IMA_ADPCM_encoded = 0;
switch (SDL_SwapLE16(format->encoding)) {
case PCM_CODE:
/* We can understand this */
break;
case IEEE_FLOAT_CODE:
IEEE_float_encoded = 1;
/* We can understand this */
break;
case MS_ADPCM_CODE:
/* Try to understand this */
if (InitMS_ADPCM(format) < 0) {
was_error = 1;
goto done;
}
MS_ADPCM_encoded = 1;
break;
case IMA_ADPCM_CODE:
/* Try to understand this */
if (InitIMA_ADPCM(format) < 0) {
was_error = 1;
goto done;
}
IMA_ADPCM_encoded = 1;
break;
case MP3_CODE:
SDL_SetError("MPEG Layer 3 data not supported",
SDL_SwapLE16(format->encoding));
was_error = 1;
goto done;
default:
SDL_SetError("Unknown WAVE data format: 0x%.4x",
SDL_SwapLE16(format->encoding));
was_error = 1;
goto done;
}
SDL_memset(spec, 0, (sizeof *spec));
spec->freq = SDL_SwapLE32(format->frequency);
if (IEEE_float_encoded) {
if ((SDL_SwapLE16(format->bitspersample)) != 32) {
was_error = 1;
} else {
spec->format = AUDIO_F32;
}
} else {
switch (SDL_SwapLE16(format->bitspersample)) {
case 4:
if (MS_ADPCM_encoded || IMA_ADPCM_encoded) {
spec->format = AUDIO_S16;
} else {
was_error = 1;
}
break;
case 8:
spec->format = AUDIO_U8;
break;
case 16:
spec->format = AUDIO_S16;
break;
case 32:
spec->format = AUDIO_S32;
break;
default:
was_error = 1;
break;
}
}
if (was_error) {
SDL_SetError("Unknown %d-bit PCM data format",
SDL_SwapLE16(format->bitspersample));
goto done;
}
spec->channels = (Uint8) SDL_SwapLE16(format->channels);
spec->samples = 4096; /* Good default buffer size */
/* Read the audio data chunk */
*audio_buf = NULL;
do {
if (*audio_buf != NULL) {
SDL_free(*audio_buf);
*audio_buf = NULL;
}
lenread = ReadChunk(src, &chunk);
if (lenread < 0) {
was_error = 1;
goto done;
}
*audio_len = lenread;
*audio_buf = chunk.data;
if (chunk.magic != DATA)
headerDiff += lenread + 2 * sizeof(Uint32);
} while (chunk.magic != DATA);
headerDiff += 2 * sizeof(Uint32); /* for the data chunk and len */
if (MS_ADPCM_encoded) {
if (MS_ADPCM_decode(audio_buf, audio_len) < 0) {
was_error = 1;
goto done;
}
}
if (IMA_ADPCM_encoded) {
if (IMA_ADPCM_decode(audio_buf, audio_len) < 0) {
was_error = 1;
goto done;
}
}
/* Don't return a buffer that isn't a multiple of samplesize */
samplesize = ((SDL_AUDIO_BITSIZE(spec->format)) / 8) * spec->channels;
*audio_len &= ~(samplesize - 1);
done:
if (format != NULL) {
SDL_free(format);
}
if (src) {
if (freesrc) {
SDL_RWclose(src);
} else {
/* seek to the end of the file (given by the RIFF chunk) */
SDL_RWseek(src, wavelen - chunk.length - headerDiff, RW_SEEK_CUR);
}
}
if (was_error) {
spec = NULL;
}
return (spec);
}
/* Since the WAV memory is allocated in the shared library, it must also
be freed here. (Necessary under Win32, VC++)
*/
void
SDL_FreeWAV(Uint8 * audio_buf)
{
if (audio_buf != NULL) {
SDL_free(audio_buf);
}
}
static int
ReadChunk(SDL_RWops * src, Chunk * chunk)
{
chunk->magic = SDL_ReadLE32(src);
chunk->length = SDL_ReadLE32(src);
chunk->data = (Uint8 *) SDL_malloc(chunk->length);
if (chunk->data == NULL) {
return SDL_OutOfMemory();
}
if (SDL_RWread(src, chunk->data, chunk->length, 1) != 1) {
SDL_free(chunk->data);
chunk->data = NULL;
return SDL_Error(SDL_EFREAD);
}
return (chunk->length);
}
/* vi: set ts=4 sw=4 expandtab: */

65
src/audio/SDL_wave.h Normal file
View File

@@ -0,0 +1,65 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* WAVE files are little-endian */
/*******************************************/
/* Define values for Microsoft WAVE format */
/*******************************************/
#define RIFF 0x46464952 /* "RIFF" */
#define WAVE 0x45564157 /* "WAVE" */
#define FACT 0x74636166 /* "fact" */
#define LIST 0x5453494c /* "LIST" */
#define FMT 0x20746D66 /* "fmt " */
#define DATA 0x61746164 /* "data" */
#define PCM_CODE 0x0001
#define MS_ADPCM_CODE 0x0002
#define IEEE_FLOAT_CODE 0x0003
#define IMA_ADPCM_CODE 0x0011
#define MP3_CODE 0x0055
#define WAVE_MONO 1
#define WAVE_STEREO 2
/* Normally, these three chunks come consecutively in a WAVE file */
typedef struct WaveFMT
{
/* Not saved in the chunk we read:
Uint32 FMTchunk;
Uint32 fmtlen;
*/
Uint16 encoding;
Uint16 channels; /* 1 = mono, 2 = stereo */
Uint32 frequency; /* One of 11025, 22050, or 44100 Hz */
Uint32 byterate; /* Average bytes per second */
Uint16 blockalign; /* Bytes per sample block */
Uint16 bitspersample; /* One of 8, 12, 16, or 4 for ADPCM */
} WaveFMT;
/* The general chunk found in the WAVE file */
typedef struct Chunk
{
Uint32 magic;
Uint32 length;
Uint8 *data;
} Chunk;
/* vi: set ts=4 sw=4 expandtab: */

687
src/audio/alsa/SDL_alsa_audio.c Normal file
View File

@@ -0,0 +1,687 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_ALSA
/* Allow access to a raw mixing buffer */
#include <sys/types.h>
#include <signal.h> /* For kill() */
#include <errno.h>
#include <string.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_alsa_audio.h"
#ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
#include "SDL_loadso.h"
#endif
static int (*ALSA_snd_pcm_open)
(snd_pcm_t **, const char *, snd_pcm_stream_t, int);
static int (*ALSA_snd_pcm_close) (snd_pcm_t * pcm);
static snd_pcm_sframes_t(*ALSA_snd_pcm_writei)
(snd_pcm_t *, const void *, snd_pcm_uframes_t);
static int (*ALSA_snd_pcm_recover) (snd_pcm_t *, int, int);
static int (*ALSA_snd_pcm_prepare) (snd_pcm_t *);
static int (*ALSA_snd_pcm_drain) (snd_pcm_t *);
static const char *(*ALSA_snd_strerror) (int);
static size_t(*ALSA_snd_pcm_hw_params_sizeof) (void);
static size_t(*ALSA_snd_pcm_sw_params_sizeof) (void);
static void (*ALSA_snd_pcm_hw_params_copy)
(snd_pcm_hw_params_t *, const snd_pcm_hw_params_t *);
static int (*ALSA_snd_pcm_hw_params_any) (snd_pcm_t *, snd_pcm_hw_params_t *);
static int (*ALSA_snd_pcm_hw_params_set_access)
(snd_pcm_t *, snd_pcm_hw_params_t *, snd_pcm_access_t);
static int (*ALSA_snd_pcm_hw_params_set_format)
(snd_pcm_t *, snd_pcm_hw_params_t *, snd_pcm_format_t);
static int (*ALSA_snd_pcm_hw_params_set_channels)
(snd_pcm_t *, snd_pcm_hw_params_t *, unsigned int);
static int (*ALSA_snd_pcm_hw_params_get_channels)
(const snd_pcm_hw_params_t *, unsigned int *);
static int (*ALSA_snd_pcm_hw_params_set_rate_near)
(snd_pcm_t *, snd_pcm_hw_params_t *, unsigned int *, int *);
static int (*ALSA_snd_pcm_hw_params_set_period_size_near)
(snd_pcm_t *, snd_pcm_hw_params_t *, snd_pcm_uframes_t *, int *);
static int (*ALSA_snd_pcm_hw_params_get_period_size)
(const snd_pcm_hw_params_t *, snd_pcm_uframes_t *, int *);
static int (*ALSA_snd_pcm_hw_params_set_periods_near)
(snd_pcm_t *, snd_pcm_hw_params_t *, unsigned int *, int *);
static int (*ALSA_snd_pcm_hw_params_get_periods)
(const snd_pcm_hw_params_t *, unsigned int *, int *);
static int (*ALSA_snd_pcm_hw_params_set_buffer_size_near)
(snd_pcm_t *pcm, snd_pcm_hw_params_t *, snd_pcm_uframes_t *);
static int (*ALSA_snd_pcm_hw_params_get_buffer_size)
(const snd_pcm_hw_params_t *, snd_pcm_uframes_t *);
static int (*ALSA_snd_pcm_hw_params) (snd_pcm_t *, snd_pcm_hw_params_t *);
static int (*ALSA_snd_pcm_sw_params_current) (snd_pcm_t *,
snd_pcm_sw_params_t *);
static int (*ALSA_snd_pcm_sw_params_set_start_threshold)
(snd_pcm_t *, snd_pcm_sw_params_t *, snd_pcm_uframes_t);
static int (*ALSA_snd_pcm_sw_params) (snd_pcm_t *, snd_pcm_sw_params_t *);
static int (*ALSA_snd_pcm_nonblock) (snd_pcm_t *, int);
static int (*ALSA_snd_pcm_wait)(snd_pcm_t *, int);
static int (*ALSA_snd_pcm_sw_params_set_avail_min)
(snd_pcm_t *, snd_pcm_sw_params_t *, snd_pcm_uframes_t);
#ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
#define snd_pcm_hw_params_sizeof ALSA_snd_pcm_hw_params_sizeof
#define snd_pcm_sw_params_sizeof ALSA_snd_pcm_sw_params_sizeof
static const char *alsa_library = SDL_AUDIO_DRIVER_ALSA_DYNAMIC;
static void *alsa_handle = NULL;
static int
load_alsa_sym(const char *fn, void **addr)
{
*addr = SDL_LoadFunction(alsa_handle, fn);
if (*addr == NULL) {
/* Don't call SDL_SetError(): SDL_LoadFunction already did. */
return 0;
}
return 1;
}
/* cast funcs to char* first, to please GCC's strict aliasing rules. */
#define SDL_ALSA_SYM(x) \
if (!load_alsa_sym(#x, (void **) (char *) &ALSA_##x)) return -1
#else
#define SDL_ALSA_SYM(x) ALSA_##x = x
#endif
static int
load_alsa_syms(void)
{
SDL_ALSA_SYM(snd_pcm_open);
SDL_ALSA_SYM(snd_pcm_close);
SDL_ALSA_SYM(snd_pcm_writei);
SDL_ALSA_SYM(snd_pcm_recover);
SDL_ALSA_SYM(snd_pcm_prepare);
SDL_ALSA_SYM(snd_pcm_drain);
SDL_ALSA_SYM(snd_strerror);
SDL_ALSA_SYM(snd_pcm_hw_params_sizeof);
SDL_ALSA_SYM(snd_pcm_sw_params_sizeof);
SDL_ALSA_SYM(snd_pcm_hw_params_copy);
SDL_ALSA_SYM(snd_pcm_hw_params_any);
SDL_ALSA_SYM(snd_pcm_hw_params_set_access);
SDL_ALSA_SYM(snd_pcm_hw_params_set_format);
SDL_ALSA_SYM(snd_pcm_hw_params_set_channels);
SDL_ALSA_SYM(snd_pcm_hw_params_get_channels);
SDL_ALSA_SYM(snd_pcm_hw_params_set_rate_near);
SDL_ALSA_SYM(snd_pcm_hw_params_set_period_size_near);
SDL_ALSA_SYM(snd_pcm_hw_params_get_period_size);
SDL_ALSA_SYM(snd_pcm_hw_params_set_periods_near);
SDL_ALSA_SYM(snd_pcm_hw_params_get_periods);
SDL_ALSA_SYM(snd_pcm_hw_params_set_buffer_size_near);
SDL_ALSA_SYM(snd_pcm_hw_params_get_buffer_size);
SDL_ALSA_SYM(snd_pcm_hw_params);
SDL_ALSA_SYM(snd_pcm_sw_params_current);
SDL_ALSA_SYM(snd_pcm_sw_params_set_start_threshold);
SDL_ALSA_SYM(snd_pcm_sw_params);
SDL_ALSA_SYM(snd_pcm_nonblock);
SDL_ALSA_SYM(snd_pcm_wait);
SDL_ALSA_SYM(snd_pcm_sw_params_set_avail_min);
return 0;
}
#undef SDL_ALSA_SYM
#ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
static void
UnloadALSALibrary(void)
{
if (alsa_handle != NULL) {
SDL_UnloadObject(alsa_handle);
alsa_handle = NULL;
}
}
static int
LoadALSALibrary(void)
{
int retval = 0;
if (alsa_handle == NULL) {
alsa_handle = SDL_LoadObject(alsa_library);
if (alsa_handle == NULL) {
retval = -1;
/* Don't call SDL_SetError(): SDL_LoadObject already did. */
} else {
retval = load_alsa_syms();
if (retval < 0) {
UnloadALSALibrary();
}
}
}
return retval;
}
#else
static void
UnloadALSALibrary(void)
{
}
static int
LoadALSALibrary(void)
{
load_alsa_syms();
return 0;
}
#endif /* SDL_AUDIO_DRIVER_ALSA_DYNAMIC */
static const char *
get_audio_device(int channels)
{
const char *device;
device = SDL_getenv("AUDIODEV"); /* Is there a standard variable name? */
if (device == NULL) {
switch (channels) {
case 6:
device = "plug:surround51";
break;
case 4:
device = "plug:surround40";
break;
default:
device = "default";
break;
}
}
return device;
}
/* This function waits until it is possible to write a full sound buffer */
static void
ALSA_WaitDevice(_THIS)
{
/* We're in blocking mode, so there's nothing to do here */
}
/* !!! FIXME: is there a channel swizzler in alsalib instead? */
/*
* http://bugzilla.libsdl.org/show_bug.cgi?id=110
* "For Linux ALSA, this is FL-FR-RL-RR-C-LFE
* and for Windows DirectX [and CoreAudio], this is FL-FR-C-LFE-RL-RR"
*/
#define SWIZ6(T) \
T *ptr = (T *) this->hidden->mixbuf; \
Uint32 i; \
for (i = 0; i < this->spec.samples; i++, ptr += 6) { \
T tmp; \
tmp = ptr[2]; ptr[2] = ptr[4]; ptr[4] = tmp; \
tmp = ptr[3]; ptr[3] = ptr[5]; ptr[5] = tmp; \
}
static __inline__ void
swizzle_alsa_channels_6_64bit(_THIS)
{
SWIZ6(Uint64);
}
static __inline__ void
swizzle_alsa_channels_6_32bit(_THIS)
{
SWIZ6(Uint32);
}
static __inline__ void
swizzle_alsa_channels_6_16bit(_THIS)
{
SWIZ6(Uint16);
}
static __inline__ void
swizzle_alsa_channels_6_8bit(_THIS)
{
SWIZ6(Uint8);
}
#undef SWIZ6
/*
* Called right before feeding this->hidden->mixbuf to the hardware. Swizzle
* channels from Windows/Mac order to the format alsalib will want.
*/
static __inline__ void
swizzle_alsa_channels(_THIS)
{
if (this->spec.channels == 6) {
const Uint16 fmtsize = (this->spec.format & 0xFF); /* bits/channel. */
if (fmtsize == 16)
swizzle_alsa_channels_6_16bit(this);
else if (fmtsize == 8)
swizzle_alsa_channels_6_8bit(this);
else if (fmtsize == 32)
swizzle_alsa_channels_6_32bit(this);
else if (fmtsize == 64)
swizzle_alsa_channels_6_64bit(this);
}
/* !!! FIXME: update this for 7.1 if needed, later. */
}
static void
ALSA_PlayDevice(_THIS)
{
int status;
const Uint8 *sample_buf = (const Uint8 *) this->hidden->mixbuf;
const int frame_size = (((int) (this->spec.format & 0xFF)) / 8) *
this->spec.channels;
snd_pcm_uframes_t frames_left = ((snd_pcm_uframes_t) this->spec.samples);
swizzle_alsa_channels(this);
while ( frames_left > 0 && this->enabled ) {
/* !!! FIXME: This works, but needs more testing before going live */
/*ALSA_snd_pcm_wait(this->hidden->pcm_handle, -1);*/
status = ALSA_snd_pcm_writei(this->hidden->pcm_handle,
sample_buf, frames_left);
if (status < 0) {
if (status == -EAGAIN) {
/* Apparently snd_pcm_recover() doesn't handle this case -
does it assume snd_pcm_wait() above? */
SDL_Delay(1);
continue;
}
status = ALSA_snd_pcm_recover(this->hidden->pcm_handle, status, 0);
if (status < 0) {
/* Hmm, not much we can do - abort */
fprintf(stderr, "ALSA write failed (unrecoverable): %s\n",
ALSA_snd_strerror(status));
this->enabled = 0;
return;
}
continue;
}
sample_buf += status * frame_size;
frames_left -= status;
}
}
static Uint8 *
ALSA_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static void
ALSA_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->pcm_handle) {
ALSA_snd_pcm_drain(this->hidden->pcm_handle);
ALSA_snd_pcm_close(this->hidden->pcm_handle);
this->hidden->pcm_handle = NULL;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
ALSA_finalize_hardware(_THIS, snd_pcm_hw_params_t *hwparams, int override)
{
int status;
snd_pcm_uframes_t bufsize;
/* "set" the hardware with the desired parameters */
status = ALSA_snd_pcm_hw_params(this->hidden->pcm_handle, hwparams);
if ( status < 0 ) {
return(-1);
}
/* Get samples for the actual buffer size */
status = ALSA_snd_pcm_hw_params_get_buffer_size(hwparams, &bufsize);
if ( status < 0 ) {
return(-1);
}
if ( !override && bufsize != this->spec.samples * 2 ) {
return(-1);
}
/* !!! FIXME: Is this safe to do? */
this->spec.samples = bufsize / 2;
/* This is useful for debugging */
if ( SDL_getenv("SDL_AUDIO_ALSA_DEBUG") ) {
snd_pcm_uframes_t persize = 0;
unsigned int periods = 0;
ALSA_snd_pcm_hw_params_get_period_size(hwparams, &persize, NULL);
ALSA_snd_pcm_hw_params_get_periods(hwparams, &periods, NULL);
fprintf(stderr,
"ALSA: period size = %ld, periods = %u, buffer size = %lu\n",
persize, periods, bufsize);
}
return(0);
}
static int
ALSA_set_period_size(_THIS, snd_pcm_hw_params_t *params, int override)
{
const char *env;
int status;
snd_pcm_hw_params_t *hwparams;
snd_pcm_uframes_t frames;
unsigned int periods;
/* Copy the hardware parameters for this setup */
snd_pcm_hw_params_alloca(&hwparams);
ALSA_snd_pcm_hw_params_copy(hwparams, params);
if ( !override ) {
env = SDL_getenv("SDL_AUDIO_ALSA_SET_PERIOD_SIZE");
if ( env ) {
override = SDL_atoi(env);
if ( override == 0 ) {
return(-1);
}
}
}
frames = this->spec.samples;
status = ALSA_snd_pcm_hw_params_set_period_size_near(
this->hidden->pcm_handle, hwparams, &frames, NULL);
if ( status < 0 ) {
return(-1);
}
periods = 2;
status = ALSA_snd_pcm_hw_params_set_periods_near(
this->hidden->pcm_handle, hwparams, &periods, NULL);
if ( status < 0 ) {
return(-1);
}
return ALSA_finalize_hardware(this, hwparams, override);
}
static int
ALSA_set_buffer_size(_THIS, snd_pcm_hw_params_t *params, int override)
{
const char *env;
int status;
snd_pcm_hw_params_t *hwparams;
snd_pcm_uframes_t frames;
/* Copy the hardware parameters for this setup */
snd_pcm_hw_params_alloca(&hwparams);
ALSA_snd_pcm_hw_params_copy(hwparams, params);
if ( !override ) {
env = SDL_getenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE");
if ( env ) {
override = SDL_atoi(env);
if ( override == 0 ) {
return(-1);
}
}
}
frames = this->spec.samples * 2;
status = ALSA_snd_pcm_hw_params_set_buffer_size_near(
this->hidden->pcm_handle, hwparams, &frames);
if ( status < 0 ) {
return(-1);
}
return ALSA_finalize_hardware(this, hwparams, override);
}
static int
ALSA_OpenDevice(_THIS, const char *devname, int iscapture)
{
int status = 0;
snd_pcm_t *pcm_handle = NULL;
snd_pcm_hw_params_t *hwparams = NULL;
snd_pcm_sw_params_t *swparams = NULL;
snd_pcm_format_t format = 0;
SDL_AudioFormat test_format = 0;
unsigned int rate = 0;
unsigned int channels = 0;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Open the audio device */
/* Name of device should depend on # channels in spec */
status = ALSA_snd_pcm_open(&pcm_handle,
get_audio_device(this->spec.channels),
SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("ALSA: Couldn't open audio device: %s",
ALSA_snd_strerror(status));
}
this->hidden->pcm_handle = pcm_handle;
/* Figure out what the hardware is capable of */
snd_pcm_hw_params_alloca(&hwparams);
status = ALSA_snd_pcm_hw_params_any(pcm_handle, hwparams);
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("ALSA: Couldn't get hardware config: %s",
ALSA_snd_strerror(status));
}
/* SDL only uses interleaved sample output */
status = ALSA_snd_pcm_hw_params_set_access(pcm_handle, hwparams,
SND_PCM_ACCESS_RW_INTERLEAVED);
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("ALSA: Couldn't set interleaved access: %s",
ALSA_snd_strerror(status));
}
/* Try for a closest match on audio format */
status = -1;
for (test_format = SDL_FirstAudioFormat(this->spec.format);
test_format && (status < 0);) {
status = 0; /* if we can't support a format, it'll become -1. */
switch (test_format) {
case AUDIO_U8:
format = SND_PCM_FORMAT_U8;
break;
case AUDIO_S8:
format = SND_PCM_FORMAT_S8;
break;
case AUDIO_S16LSB:
format = SND_PCM_FORMAT_S16_LE;
break;
case AUDIO_S16MSB:
format = SND_PCM_FORMAT_S16_BE;
break;
case AUDIO_U16LSB:
format = SND_PCM_FORMAT_U16_LE;
break;
case AUDIO_U16MSB:
format = SND_PCM_FORMAT_U16_BE;
break;
case AUDIO_S32LSB:
format = SND_PCM_FORMAT_S32_LE;
break;
case AUDIO_S32MSB:
format = SND_PCM_FORMAT_S32_BE;
break;
case AUDIO_F32LSB:
format = SND_PCM_FORMAT_FLOAT_LE;
break;
case AUDIO_F32MSB:
format = SND_PCM_FORMAT_FLOAT_BE;
break;
default:
status = -1;
break;
}
if (status >= 0) {
status = ALSA_snd_pcm_hw_params_set_format(pcm_handle,
hwparams, format);
}
if (status < 0) {
test_format = SDL_NextAudioFormat();
}
}
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("ALSA: Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
/* Set the number of channels */
status = ALSA_snd_pcm_hw_params_set_channels(pcm_handle, hwparams,
this->spec.channels);
channels = this->spec.channels;
if (status < 0) {
status = ALSA_snd_pcm_hw_params_get_channels(hwparams, &channels);
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("ALSA: Couldn't set audio channels");
}
this->spec.channels = channels;
}
/* Set the audio rate */
rate = this->spec.freq;
status = ALSA_snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams,
&rate, NULL);
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("ALSA: Couldn't set audio frequency: %s",
ALSA_snd_strerror(status));
}
this->spec.freq = rate;
/* Set the buffer size, in samples */
if ( ALSA_set_period_size(this, hwparams, 0) < 0 &&
ALSA_set_buffer_size(this, hwparams, 0) < 0 ) {
/* Failed to set desired buffer size, do the best you can... */
if ( ALSA_set_period_size(this, hwparams, 1) < 0 ) {
ALSA_CloseDevice(this);
return SDL_SetError("Couldn't set hardware audio parameters: %s", ALSA_snd_strerror(status));
}
}
/* Set the software parameters */
snd_pcm_sw_params_alloca(&swparams);
status = ALSA_snd_pcm_sw_params_current(pcm_handle, swparams);
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("ALSA: Couldn't get software config: %s",
ALSA_snd_strerror(status));
}
status = ALSA_snd_pcm_sw_params_set_avail_min(pcm_handle, swparams, this->spec.samples);
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("Couldn't set minimum available samples: %s",
ALSA_snd_strerror(status));
}
status =
ALSA_snd_pcm_sw_params_set_start_threshold(pcm_handle, swparams, 1);
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("ALSA: Couldn't set start threshold: %s",
ALSA_snd_strerror(status));
}
status = ALSA_snd_pcm_sw_params(pcm_handle, swparams);
if (status < 0) {
ALSA_CloseDevice(this);
return SDL_SetError("Couldn't set software audio parameters: %s",
ALSA_snd_strerror(status));
}
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
ALSA_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->hidden->mixlen);
/* Switch to blocking mode for playback */
ALSA_snd_pcm_nonblock(pcm_handle, 0);
/* We're ready to rock and roll. :-) */
return 0;
}
static void
ALSA_Deinitialize(void)
{
UnloadALSALibrary();
}
static int
ALSA_Init(SDL_AudioDriverImpl * impl)
{
if (LoadALSALibrary() < 0) {
return 0;
}
/* Set the function pointers */
impl->OpenDevice = ALSA_OpenDevice;
impl->WaitDevice = ALSA_WaitDevice;
impl->GetDeviceBuf = ALSA_GetDeviceBuf;
impl->PlayDevice = ALSA_PlayDevice;
impl->CloseDevice = ALSA_CloseDevice;
impl->Deinitialize = ALSA_Deinitialize;
impl->OnlyHasDefaultOutputDevice = 1; /* !!! FIXME: Add device enum! */
return 1; /* this audio target is available. */
}
AudioBootStrap ALSA_bootstrap = {
"alsa", "ALSA PCM audio", ALSA_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_ALSA */
/* vi: set ts=4 sw=4 expandtab: */

45
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_ALSA_audio_h
#define _SDL_ALSA_audio_h
#include <alsa/asoundlib.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The audio device handle */
snd_pcm_t *pcm_handle;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
};
#endif /* _SDL_ALSA_audio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_ANDROID
/* Output audio to Android */
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "SDL_androidaudio.h"
#include "../../core/android/SDL_android.h"
#include <android/log.h>
static void * audioDevice;
static int
AndroidAUD_OpenDevice(_THIS, const char *devname, int iscapture)
{
SDL_AudioFormat test_format;
if (iscapture) {
/* TODO: implement capture */
return SDL_SetError("Capture not supported on Android");
}
if (audioDevice != NULL) {
return SDL_SetError("Only one audio device at a time please!");
}
audioDevice = this;
test_format = SDL_FirstAudioFormat(this->spec.format);
while (test_format != 0) { /* no "UNKNOWN" constant */
if ((test_format == AUDIO_U8) || (test_format == AUDIO_S16LSB)) {
this->spec.format = test_format;
break;
}
test_format = SDL_NextAudioFormat();
}
if (test_format == 0) {
/* Didn't find a compatible format :( */
return SDL_SetError("No compatible audio format!");
}
if (this->spec.channels > 1) {
this->spec.channels = 2;
} else {
this->spec.channels = 1;
}
if (this->spec.freq < 8000) {
this->spec.freq = 8000;
}
if (this->spec.freq > 48000) {
this->spec.freq = 48000;
}
/* TODO: pass in/return a (Java) device ID, also whether we're opening for input or output */
this->spec.samples = Android_JNI_OpenAudioDevice(this->spec.freq, this->spec.format == AUDIO_U8 ? 0 : 1, this->spec.channels, this->spec.samples);
SDL_CalculateAudioSpec(&this->spec);
if (this->spec.samples == 0) {
/* Init failed? */
return SDL_SetError("Java-side initialization failed!");
}
return 0;
}
static void
AndroidAUD_PlayDevice(_THIS)
{
Android_JNI_WriteAudioBuffer();
}
static Uint8 *
AndroidAUD_GetDeviceBuf(_THIS)
{
return Android_JNI_GetAudioBuffer();
}
static void
AndroidAUD_CloseDevice(_THIS)
{
/* At this point SDL_CloseAudioDevice via close_audio_device took care of terminating the audio thread
so it's safe to terminate the Java side buffer and AudioTrack
*/
Android_JNI_CloseAudioDevice();
if (audioDevice == this) {
audioDevice = NULL;
}
}
static int
AndroidAUD_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->OpenDevice = AndroidAUD_OpenDevice;
impl->PlayDevice = AndroidAUD_PlayDevice;
impl->GetDeviceBuf = AndroidAUD_GetDeviceBuf;
impl->CloseDevice = AndroidAUD_CloseDevice;
/* and the capabilities */
impl->HasCaptureSupport = 0; /* TODO */
impl->OnlyHasDefaultOutputDevice = 1;
impl->OnlyHasDefaultInputDevice = 1;
return 1; /* this audio target is available. */
}
AudioBootStrap ANDROIDAUD_bootstrap = {
"android", "SDL Android audio driver", AndroidAUD_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_ANDROID */
/* vi: set ts=4 sw=4 expandtab: */

39
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_androidaudio_h
#define _SDL_androidaudio_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
};
static void AndroidAUD_CloseDevice(_THIS);
#endif /* _SDL_androidaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_ARTS
/* Allow access to a raw mixing buffer */
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include <unistd.h>
#include <errno.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_artsaudio.h"
#ifdef SDL_AUDIO_DRIVER_ARTS_DYNAMIC
#include "SDL_name.h"
#include "SDL_loadso.h"
#else
#define SDL_NAME(X) X
#endif
#ifdef SDL_AUDIO_DRIVER_ARTS_DYNAMIC
static const char *arts_library = SDL_AUDIO_DRIVER_ARTS_DYNAMIC;
static void *arts_handle = NULL;
/* !!! FIXME: I hate this SDL_NAME clutter...it makes everything so messy! */
static int (*SDL_NAME(arts_init)) (void);
static void (*SDL_NAME(arts_free)) (void);
static arts_stream_t(*SDL_NAME(arts_play_stream)) (int rate, int bits,
int channels,
const char *name);
static int (*SDL_NAME(arts_stream_set)) (arts_stream_t s,
arts_parameter_t param, int value);
static int (*SDL_NAME(arts_stream_get)) (arts_stream_t s,
arts_parameter_t param);
static int (*SDL_NAME(arts_write)) (arts_stream_t s, const void *buffer,
int count);
static void (*SDL_NAME(arts_close_stream)) (arts_stream_t s);
static int (*SDL_NAME(arts_suspend))(void);
static int (*SDL_NAME(arts_suspended)) (void);
static const char *(*SDL_NAME(arts_error_text)) (int errorcode);
#define SDL_ARTS_SYM(x) { #x, (void **) (char *) &SDL_NAME(x) }
static struct
{
const char *name;
void **func;
} arts_functions[] = {
/* *INDENT-OFF* */
SDL_ARTS_SYM(arts_init),
SDL_ARTS_SYM(arts_free),
SDL_ARTS_SYM(arts_play_stream),
SDL_ARTS_SYM(arts_stream_set),
SDL_ARTS_SYM(arts_stream_get),
SDL_ARTS_SYM(arts_write),
SDL_ARTS_SYM(arts_close_stream),
SDL_ARTS_SYM(arts_suspend),
SDL_ARTS_SYM(arts_suspended),
SDL_ARTS_SYM(arts_error_text),
/* *INDENT-ON* */
};
#undef SDL_ARTS_SYM
static void
UnloadARTSLibrary()
{
if (arts_handle != NULL) {
SDL_UnloadObject(arts_handle);
arts_handle = NULL;
}
}
static int
LoadARTSLibrary(void)
{
int i, retval = -1;
if (arts_handle == NULL) {
arts_handle = SDL_LoadObject(arts_library);
if (arts_handle != NULL) {
retval = 0;
for (i = 0; i < SDL_arraysize(arts_functions); ++i) {
*arts_functions[i].func =
SDL_LoadFunction(arts_handle, arts_functions[i].name);
if (!*arts_functions[i].func) {
retval = -1;
UnloadARTSLibrary();
break;
}
}
}
}
return retval;
}
#else
static void
UnloadARTSLibrary()
{
return;
}
static int
LoadARTSLibrary(void)
{
return 0;
}
#endif /* SDL_AUDIO_DRIVER_ARTS_DYNAMIC */
/* This function waits until it is possible to write a full sound buffer */
static void
ARTS_WaitDevice(_THIS)
{
Sint32 ticks;
/* Check to see if the thread-parent process is still alive */
{
static int cnt = 0;
/* Note that this only works with thread implementations
that use a different process id for each thread.
*/
/* Check every 10 loops */
if (this->hidden->parent && (((++cnt) % 10) == 0)) {
if (kill(this->hidden->parent, 0) < 0 && errno == ESRCH) {
this->enabled = 0;
}
}
}
/* Use timer for general audio synchronization */
ticks =
((Sint32) (this->hidden->next_frame - SDL_GetTicks())) - FUDGE_TICKS;
if (ticks > 0) {
SDL_Delay(ticks);
}
}
static void
ARTS_PlayDevice(_THIS)
{
/* Write the audio data */
int written = SDL_NAME(arts_write) (this->hidden->stream,
this->hidden->mixbuf,
this->hidden->mixlen);
/* If timer synchronization is enabled, set the next write frame */
if (this->hidden->frame_ticks) {
this->hidden->next_frame += this->hidden->frame_ticks;
}
/* If we couldn't write, assume fatal error for now */
if (written < 0) {
this->enabled = 0;
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", written);
#endif
}
static void
ARTS_WaitDone(_THIS)
{
/* !!! FIXME: camp here until buffer drains... SDL_Delay(???); */
}
static Uint8 *
ARTS_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static void
ARTS_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->stream) {
SDL_NAME(arts_close_stream) (this->hidden->stream);
this->hidden->stream = 0;
}
SDL_NAME(arts_free) ();
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
ARTS_Suspend(void)
{
const Uint32 abortms = SDL_GetTicks() + 3000; /* give up after 3 secs */
while ( (!SDL_NAME(arts_suspended)()) && (SDL_GetTicks() < abortms) ) {
if ( SDL_NAME(arts_suspend)() ) {
break;
}
}
return SDL_NAME(arts_suspended)();
}
static int
ARTS_OpenDevice(_THIS, const char *devname, int iscapture)
{
int rc = 0;
int bits = 0, frag_spec = 0;
SDL_AudioFormat test_format = 0, format = 0;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Try for a closest match on audio format */
for (test_format = SDL_FirstAudioFormat(this->spec.format);
!format && test_format;) {
#ifdef DEBUG_AUDIO
fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
#endif
switch (test_format) {
case AUDIO_U8:
bits = 8;
format = 1;
break;
case AUDIO_S16LSB:
bits = 16;
format = 1;
break;
default:
format = 0;
break;
}
if (!format) {
test_format = SDL_NextAudioFormat();
}
}
if (format == 0) {
ARTS_CloseDevice(this);
return SDL_SetError("Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
if ((rc = SDL_NAME(arts_init) ()) != 0) {
ARTS_CloseDevice(this);
return SDL_SetError("Unable to initialize ARTS: %s",
SDL_NAME(arts_error_text) (rc));
}
if (!ARTS_Suspend()) {
ARTS_CloseDevice(this);
return SDL_SetError("ARTS can not open audio device");
}
this->hidden->stream = SDL_NAME(arts_play_stream) (this->spec.freq,
bits,
this->spec.channels,
"SDL");
/* Play nothing so we have at least one write (server bug workaround). */
SDL_NAME(arts_write) (this->hidden->stream, "", 0);
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
/* Determine the power of two of the fragment size */
for (frag_spec = 0; (0x01 << frag_spec) < this->spec.size; ++frag_spec);
if ((0x01 << frag_spec) != this->spec.size) {
ARTS_CloseDevice(this);
return SDL_SetError("Fragment size must be a power of two");
}
frag_spec |= 0x00020000; /* two fragments, for low latency */
#ifdef ARTS_P_PACKET_SETTINGS
SDL_NAME(arts_stream_set) (this->hidden->stream,
ARTS_P_PACKET_SETTINGS, frag_spec);
#else
SDL_NAME(arts_stream_set) (this->hidden->stream, ARTS_P_PACKET_SIZE,
frag_spec & 0xffff);
SDL_NAME(arts_stream_set) (this->hidden->stream, ARTS_P_PACKET_COUNT,
frag_spec >> 16);
#endif
this->spec.size = SDL_NAME(arts_stream_get) (this->hidden->stream,
ARTS_P_PACKET_SIZE);
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
ARTS_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
/* Get the parent process id (we're the parent of the audio thread) */
this->hidden->parent = getpid();
/* We're ready to rock and roll. :-) */
return 0;
}
static void
ARTS_Deinitialize(void)
{
UnloadARTSLibrary();
}
static int
ARTS_Init(SDL_AudioDriverImpl * impl)
{
if (LoadARTSLibrary() < 0) {
return 0;
} else {
if (SDL_NAME(arts_init) () != 0) {
UnloadARTSLibrary();
SDL_SetError("ARTS: arts_init failed (no audio server?)");
return 0;
}
/* Play a stream so aRts doesn't crash */
if (ARTS_Suspend()) {
arts_stream_t stream;
stream = SDL_NAME(arts_play_stream) (44100, 16, 2, "SDL");
SDL_NAME(arts_write) (stream, "", 0);
SDL_NAME(arts_close_stream) (stream);
}
SDL_NAME(arts_free) ();
}
/* Set the function pointers */
impl->OpenDevice = ARTS_OpenDevice;
impl->PlayDevice = ARTS_PlayDevice;
impl->WaitDevice = ARTS_WaitDevice;
impl->GetDeviceBuf = ARTS_GetDeviceBuf;
impl->CloseDevice = ARTS_CloseDevice;
impl->WaitDone = ARTS_WaitDone;
impl->Deinitialize = ARTS_Deinitialize;
impl->OnlyHasDefaultOutputDevice = 1;
return 1; /* this audio target is available. */
}
AudioBootStrap ARTS_bootstrap = {
"arts", "Analog RealTime Synthesizer", ARTS_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_ARTS */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_artscaudio_h
#define _SDL_artscaudio_h
#include <artsc.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The stream descriptor for the audio device */
arts_stream_t stream;
/* The parent process id, to detect when application quits */
pid_t parent;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
/* Support for audio timing using a timer, in addition to select() */
float frame_ticks;
float next_frame;
};
#define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */
#endif /* _SDL_artscaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_BEOSAUDIO
/* Allow access to the audio stream on BeOS */
#include <SoundPlayer.h>
#include "../../main/beos/SDL_BeApp.h"
extern "C"
{
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "../SDL_sysaudio.h"
#include "../../thread/beos/SDL_systhread_c.h"
#include "SDL_beaudio.h"
}
/* !!! FIXME: have the callback call the higher level to avoid code dupe. */
/* The BeOS callback for handling the audio buffer */
static void
FillSound(void *device, void *stream, size_t len,
const media_raw_audio_format & format)
{
SDL_AudioDevice *audio = (SDL_AudioDevice *) device;
/* Only do soemthing if audio is enabled */
if (!audio->enabled)
return;
if (!audio->paused) {
if (audio->convert.needed) {
SDL_LockMutex(audio->mixer_lock);
(*audio->spec.callback) (audio->spec.userdata,
(Uint8 *) audio->convert.buf,
audio->convert.len);
SDL_UnlockMutex(audio->mixer_lock);
SDL_ConvertAudio(&audio->convert);
SDL_memcpy(stream, audio->convert.buf, audio->convert.len_cvt);
} else {
SDL_LockMutex(audio->mixer_lock);
(*audio->spec.callback) (audio->spec.userdata,
(Uint8 *) stream, len);
SDL_UnlockMutex(audio->mixer_lock);
}
}
}
static void
BEOSAUDIO_CloseDevice(_THIS)
{
if (_this->hidden != NULL) {
if (_this->hidden->audio_obj) {
_this->hidden->audio_obj->Stop();
delete _this->hidden->audio_obj;
_this->hidden->audio_obj = NULL;
}
delete _this->hidden;
_this->hidden = NULL;
}
}
static int
BEOSAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
{
int valid_datatype = 0;
media_raw_audio_format format;
SDL_AudioFormat test_format = SDL_FirstAudioFormat(_this->spec.format);
/* Initialize all variables that we clean on shutdown */
_this->hidden = new SDL_PrivateAudioData;
if (_this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(_this->hidden, 0, (sizeof *_this->hidden));
/* Parse the audio format and fill the Be raw audio format */
SDL_memset(&format, '\0', sizeof(media_raw_audio_format));
format.byte_order = B_MEDIA_LITTLE_ENDIAN;
format.frame_rate = (float) _this->spec.freq;
format.channel_count = _this->spec.channels; /* !!! FIXME: support > 2? */
while ((!valid_datatype) && (test_format)) {
valid_datatype = 1;
_this->spec.format = test_format;
switch (test_format) {
case AUDIO_S8:
format.format = media_raw_audio_format::B_AUDIO_CHAR;
break;
case AUDIO_U8:
format.format = media_raw_audio_format::B_AUDIO_UCHAR;
break;
case AUDIO_S16LSB:
format.format = media_raw_audio_format::B_AUDIO_SHORT;
break;
case AUDIO_S16MSB:
format.format = media_raw_audio_format::B_AUDIO_SHORT;
format.byte_order = B_MEDIA_BIG_ENDIAN;
break;
case AUDIO_S32LSB:
format.format = media_raw_audio_format::B_AUDIO_INT;
break;
case AUDIO_S32MSB:
format.format = media_raw_audio_format::B_AUDIO_INT;
format.byte_order = B_MEDIA_BIG_ENDIAN;
break;
case AUDIO_F32LSB:
format.format = media_raw_audio_format::B_AUDIO_FLOAT;
break;
case AUDIO_F32MSB:
format.format = media_raw_audio_format::B_AUDIO_FLOAT;
format.byte_order = B_MEDIA_BIG_ENDIAN;
break;
default:
valid_datatype = 0;
test_format = SDL_NextAudioFormat();
break;
}
}
if (!valid_datatype) { /* shouldn't happen, but just in case... */
BEOSAUDIO_CloseDevice(_this);
return SDL_SetError("Unsupported audio format");
}
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&_this->spec);
format.buffer_size = _this->spec.size;
/* Subscribe to the audio stream (creates a new thread) */
sigset_t omask;
SDL_MaskSignals(&omask);
_this->hidden->audio_obj = new BSoundPlayer(&format, "SDL Audio",
FillSound, NULL, _this);
SDL_UnmaskSignals(&omask);
if (_this->hidden->audio_obj->Start() == B_NO_ERROR) {
_this->hidden->audio_obj->SetHasData(true);
} else {
BEOSAUDIO_CloseDevice(_this);
return SDL_SetError("Unable to start Be audio");
}
/* We're running! */
return 0;
}
static void
BEOSAUDIO_Deinitialize(void)
{
SDL_QuitBeApp();
}
static int
BEOSAUDIO_Init(SDL_AudioDriverImpl * impl)
{
/* Initialize the Be Application, if it's not already started */
if (SDL_InitBeApp() < 0) {
return 0;
}
/* Set the function pointers */
impl->OpenDevice = BEOSAUDIO_OpenDevice;
impl->CloseDevice = BEOSAUDIO_CloseDevice;
impl->Deinitialize = BEOSAUDIO_Deinitialize;
impl->ProvidesOwnCallbackThread = 1;
impl->OnlyHasDefaultOutputDevice = 1;
return 1; /* this audio target is available. */
}
extern "C"
{
extern AudioBootStrap BEOSAUDIO_bootstrap;
}
AudioBootStrap BEOSAUDIO_bootstrap = {
"baudio", "BeOS BSoundPlayer", BEOSAUDIO_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_BEOSAUDIO */
/* vi: set ts=4 sw=4 expandtab: */

38
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_beaudio_h
#define _SDL_beaudio_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *_this
struct SDL_PrivateAudioData
{
BSoundPlayer *audio_obj;
};
#endif /* _SDL_beaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_BSD
/*
* Driver for native OpenBSD/NetBSD audio(4).
* vedge@vedge.com.ar.
*/
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/audioio.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "../SDL_audiodev_c.h"
#include "SDL_bsdaudio.h"
/* Use timer for synchronization */
/* #define USE_TIMER_SYNC */
/* #define DEBUG_AUDIO */
/* #define DEBUG_AUDIO_STREAM */
static void
BSDAUDIO_DetectDevices(int iscapture, SDL_AddAudioDevice addfn)
{
SDL_EnumUnixAudioDevices(iscapture, 0, NULL, addfn);
}
static void
BSDAUDIO_Status(_THIS)
{
#ifdef DEBUG_AUDIO
/* *INDENT-OFF* */
audio_info_t info;
if (ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info) < 0) {
fprintf(stderr, "AUDIO_GETINFO failed.\n");
return;
}
fprintf(stderr, "\n"
"[play/record info]\n"
"buffer size : %d bytes\n"
"sample rate : %i Hz\n"
"channels : %i\n"
"precision : %i-bit\n"
"encoding : 0x%x\n"
"seek : %i\n"
"sample count : %i\n"
"EOF count : %i\n"
"paused : %s\n"
"error occured : %s\n"
"waiting : %s\n"
"active : %s\n"
"",
info.play.buffer_size,
info.play.sample_rate,
info.play.channels,
info.play.precision,
info.play.encoding,
info.play.seek,
info.play.samples,
info.play.eof,
info.play.pause ? "yes" : "no",
info.play.error ? "yes" : "no",
info.play.waiting ? "yes" : "no",
info.play.active ? "yes" : "no");
fprintf(stderr, "\n"
"[audio info]\n"
"monitor_gain : %i\n"
"hw block size : %d bytes\n"
"hi watermark : %i\n"
"lo watermark : %i\n"
"audio mode : %s\n"
"",
info.monitor_gain,
info.blocksize,
info.hiwat, info.lowat,
(info.mode == AUMODE_PLAY) ? "PLAY"
: (info.mode = AUMODE_RECORD) ? "RECORD"
: (info.mode == AUMODE_PLAY_ALL ? "PLAY_ALL" : "?"));
/* *INDENT-ON* */
#endif /* DEBUG_AUDIO */
}
/* This function waits until it is possible to write a full sound buffer */
static void
BSDAUDIO_WaitDevice(_THIS)
{
#ifndef USE_BLOCKING_WRITES /* Not necessary when using blocking writes */
/* See if we need to use timed audio synchronization */
if (this->hidden->frame_ticks) {
/* Use timer for general audio synchronization */
Sint32 ticks;
ticks =
((Sint32) (this->hidden->next_frame - SDL_GetTicks())) -
FUDGE_TICKS;
if (ticks > 0) {
SDL_Delay(ticks);
}
} else {
/* Use select() for audio synchronization */
fd_set fdset;
struct timeval timeout;
FD_ZERO(&fdset);
FD_SET(this->hidden->audio_fd, &fdset);
timeout.tv_sec = 10;
timeout.tv_usec = 0;
#ifdef DEBUG_AUDIO
fprintf(stderr, "Waiting for audio to get ready\n");
#endif
if (select(this->hidden->audio_fd + 1, NULL, &fdset, NULL, &timeout)
<= 0) {
const char *message =
"Audio timeout - buggy audio driver? (disabled)";
/* In general we should never print to the screen,
but in this case we have no other way of letting
the user know what happened.
*/
fprintf(stderr, "SDL: %s\n", message);
this->enabled = 0;
/* Don't try to close - may hang */
this->hidden->audio_fd = -1;
#ifdef DEBUG_AUDIO
fprintf(stderr, "Done disabling audio\n");
#endif
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Ready!\n");
#endif
}
#endif /* !USE_BLOCKING_WRITES */
}
static void
BSDAUDIO_PlayDevice(_THIS)
{
int written, p = 0;
/* Write the audio data, checking for EAGAIN on broken audio drivers */
do {
written = write(this->hidden->audio_fd,
&this->hidden->mixbuf[p], this->hidden->mixlen - p);
if (written > 0)
p += written;
if (written == -1 && errno != 0 && errno != EAGAIN && errno != EINTR) {
/* Non recoverable error has occurred. It should be reported!!! */
perror("audio");
break;
}
if (p < written
|| ((written < 0) && ((errno == 0) || (errno == EAGAIN)))) {
SDL_Delay(1); /* Let a little CPU time go by */
}
} while (p < written);
/* If timer synchronization is enabled, set the next write frame */
if (this->hidden->frame_ticks) {
this->hidden->next_frame += this->hidden->frame_ticks;
}
/* If we couldn't write, assume fatal error for now */
if (written < 0) {
this->enabled = 0;
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", written);
#endif
}
static Uint8 *
BSDAUDIO_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static void
BSDAUDIO_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->audio_fd >= 0) {
close(this->hidden->audio_fd);
this->hidden->audio_fd = -1;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
BSDAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
{
const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
SDL_AudioFormat format = 0;
audio_info_t info;
/* We don't care what the devname is...we'll try to open anything. */
/* ...but default to first name in the list... */
if (devname == NULL) {
devname = SDL_GetAudioDeviceName(0, iscapture);
if (devname == NULL) {
return SDL_SetError("No such audio device");
}
}
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Open the audio device */
this->hidden->audio_fd = open(devname, flags, 0);
if (this->hidden->audio_fd < 0) {
return SDL_SetError("Couldn't open %s: %s", devname, strerror(errno));
}
AUDIO_INITINFO(&info);
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
/* Set to play mode */
info.mode = AUMODE_PLAY;
if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) < 0) {
BSDAUDIO_CloseDevice(this);
return SDL_SetError("Couldn't put device into play mode");
}
AUDIO_INITINFO(&info);
for (format = SDL_FirstAudioFormat(this->spec.format);
format; format = SDL_NextAudioFormat()) {
switch (format) {
case AUDIO_U8:
info.play.encoding = AUDIO_ENCODING_ULINEAR;
info.play.precision = 8;
break;
case AUDIO_S8:
info.play.encoding = AUDIO_ENCODING_SLINEAR;
info.play.precision = 8;
break;
case AUDIO_S16LSB:
info.play.encoding = AUDIO_ENCODING_SLINEAR_LE;
info.play.precision = 16;
break;
case AUDIO_S16MSB:
info.play.encoding = AUDIO_ENCODING_SLINEAR_BE;
info.play.precision = 16;
break;
case AUDIO_U16LSB:
info.play.encoding = AUDIO_ENCODING_ULINEAR_LE;
info.play.precision = 16;
break;
case AUDIO_U16MSB:
info.play.encoding = AUDIO_ENCODING_ULINEAR_BE;
info.play.precision = 16;
break;
default:
continue;
}
if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) == 0) {
break;
}
}
if (!format) {
BSDAUDIO_CloseDevice(this);
return SDL_SetError("No supported encoding for 0x%x", this->spec.format);
}
this->spec.format = format;
AUDIO_INITINFO(&info);
info.play.channels = this->spec.channels;
if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) == -1) {
this->spec.channels = 1;
}
AUDIO_INITINFO(&info);
info.play.sample_rate = this->spec.freq;
info.blocksize = this->spec.size;
info.hiwat = 5;
info.lowat = 3;
(void) ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info);
(void) ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info);
this->spec.freq = info.play.sample_rate;
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
BSDAUDIO_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
BSDAUDIO_Status(this);
/* We're ready to rock and roll. :-) */
return 0;
}
static int
BSDAUDIO_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->DetectDevices = BSDAUDIO_DetectDevices;
impl->OpenDevice = BSDAUDIO_OpenDevice;
impl->PlayDevice = BSDAUDIO_PlayDevice;
impl->WaitDevice = BSDAUDIO_WaitDevice;
impl->GetDeviceBuf = BSDAUDIO_GetDeviceBuf;
impl->CloseDevice = BSDAUDIO_CloseDevice;
return 1; /* this audio target is available. */
}
AudioBootStrap BSD_AUDIO_bootstrap = {
"bsd", "BSD audio", BSDAUDIO_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_BSD */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_bsdaudio_h
#define _SDL_bsdaudio_h
#include "../SDL_sysaudio.h"
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The file descriptor for the audio device */
int audio_fd;
/* The parent process id, to detect when application quits */
pid_t parent;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
/* Support for audio timing using a timer, in addition to select() */
float frame_ticks;
float next_frame;
};
#define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */
#endif /* _SDL_bsdaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "../SDL_sysaudio.h"
#include "SDL_coreaudio.h"
#include "SDL_assert.h"
#define DEBUG_COREAUDIO 0
static void COREAUDIO_CloseDevice(_THIS);
#define CHECK_RESULT(msg) \
if (result != noErr) { \
COREAUDIO_CloseDevice(this); \
SDL_SetError("CoreAudio error (%s): %d", msg, (int) result); \
return 0; \
}
#if MACOSX_COREAUDIO
typedef void (*addDevFn)(const char *name, AudioDeviceID devId, void *data);
static void
addToDevList(const char *name, AudioDeviceID devId, void *data)
{
SDL_AddAudioDevice addfn = (SDL_AddAudioDevice) data;
addfn(name);
}
typedef struct
{
const char *findname;
AudioDeviceID devId;
int found;
} FindDevIdData;
static void
findDevId(const char *name, AudioDeviceID devId, void *_data)
{
FindDevIdData *data = (FindDevIdData *) _data;
if (!data->found) {
if (SDL_strcmp(name, data->findname) == 0) {
data->found = 1;
data->devId = devId;
}
}
}
static void
build_device_list(int iscapture, addDevFn addfn, void *addfndata)
{
OSStatus result = noErr;
UInt32 size = 0;
AudioDeviceID *devs = NULL;
UInt32 i = 0;
UInt32 max = 0;
AudioObjectPropertyAddress addr = {
kAudioHardwarePropertyDevices,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
result = AudioObjectGetPropertyDataSize(kAudioObjectSystemObject, &addr,
0, NULL, &size);
if (result != kAudioHardwareNoError)
return;
devs = (AudioDeviceID *) alloca(size);
if (devs == NULL)
return;
result = AudioObjectGetPropertyData(kAudioObjectSystemObject, &addr,
0, NULL, &size, devs);
if (result != kAudioHardwareNoError)
return;
max = size / sizeof (AudioDeviceID);
for (i = 0; i < max; i++) {
CFStringRef cfstr = NULL;
char *ptr = NULL;
AudioDeviceID dev = devs[i];
AudioBufferList *buflist = NULL;
int usable = 0;
CFIndex len = 0;
addr.mScope = iscapture ? kAudioDevicePropertyScopeInput :
kAudioDevicePropertyScopeOutput;
addr.mSelector = kAudioDevicePropertyStreamConfiguration;
result = AudioObjectGetPropertyDataSize(dev, &addr, 0, NULL, &size);
if (result != noErr)
continue;
buflist = (AudioBufferList *) SDL_malloc(size);
if (buflist == NULL)
continue;
result = AudioObjectGetPropertyData(dev, &addr, 0, NULL,
&size, buflist);
if (result == noErr) {
UInt32 j;
for (j = 0; j < buflist->mNumberBuffers; j++) {
if (buflist->mBuffers[j].mNumberChannels > 0) {
usable = 1;
break;
}
}
}
SDL_free(buflist);
if (!usable)
continue;
addr.mSelector = kAudioObjectPropertyName;
size = sizeof (CFStringRef);
result = AudioObjectGetPropertyData(dev, &addr, 0, NULL, &size, &cfstr);
if (result != kAudioHardwareNoError)
continue;
len = CFStringGetMaximumSizeForEncoding(CFStringGetLength(cfstr),
kCFStringEncodingUTF8);
ptr = (char *) SDL_malloc(len + 1);
usable = ((ptr != NULL) &&
(CFStringGetCString
(cfstr, ptr, len + 1, kCFStringEncodingUTF8)));
CFRelease(cfstr);
if (usable) {
len = strlen(ptr);
/* Some devices have whitespace at the end...trim it. */
while ((len > 0) && (ptr[len - 1] == ' ')) {
len--;
}
usable = (len > 0);
}
if (usable) {
ptr[len] = '\0';
#if DEBUG_COREAUDIO
printf("COREAUDIO: Found %s device #%d: '%s' (devid %d)\n",
((iscapture) ? "capture" : "output"),
(int) *devCount, ptr, (int) dev);
#endif
addfn(ptr, dev, addfndata);
}
SDL_free(ptr); /* addfn() would have copied the string. */
}
}
static void
COREAUDIO_DetectDevices(int iscapture, SDL_AddAudioDevice addfn)
{
build_device_list(iscapture, addToDevList, addfn);
}
static int
find_device_by_name(_THIS, const char *devname, int iscapture)
{
AudioDeviceID devid = 0;
OSStatus result = noErr;
UInt32 size = 0;
UInt32 alive = 0;
pid_t pid = 0;
AudioObjectPropertyAddress addr = {
0,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
if (devname == NULL) {
size = sizeof (AudioDeviceID);
addr.mSelector =
((iscapture) ? kAudioHardwarePropertyDefaultInputDevice :
kAudioHardwarePropertyDefaultOutputDevice);
result = AudioObjectGetPropertyData(kAudioObjectSystemObject, &addr,
0, NULL, &size, &devid);
CHECK_RESULT("AudioHardwareGetProperty (default device)");
} else {
FindDevIdData data;
SDL_zero(data);
data.findname = devname;
build_device_list(iscapture, findDevId, &data);
if (!data.found) {
SDL_SetError("CoreAudio: No such audio device.");
return 0;
}
devid = data.devId;
}
addr.mSelector = kAudioDevicePropertyDeviceIsAlive;
addr.mScope = iscapture ? kAudioDevicePropertyScopeInput :
kAudioDevicePropertyScopeOutput;
size = sizeof (alive);
result = AudioObjectGetPropertyData(devid, &addr, 0, NULL, &size, &alive);
CHECK_RESULT
("AudioDeviceGetProperty (kAudioDevicePropertyDeviceIsAlive)");
if (!alive) {
SDL_SetError("CoreAudio: requested device exists, but isn't alive.");
return 0;
}
addr.mSelector = kAudioDevicePropertyHogMode;
size = sizeof (pid);
result = AudioObjectGetPropertyData(devid, &addr, 0, NULL, &size, &pid);
/* some devices don't support this property, so errors are fine here. */
if ((result == noErr) && (pid != -1)) {
SDL_SetError("CoreAudio: requested device is being hogged.");
return 0;
}
this->hidden->deviceID = devid;
return 1;
}
#endif
/* The CoreAudio callback */
static OSStatus
outputCallback(void *inRefCon,
AudioUnitRenderActionFlags * ioActionFlags,
const AudioTimeStamp * inTimeStamp,
UInt32 inBusNumber, UInt32 inNumberFrames,
AudioBufferList * ioData)
{
SDL_AudioDevice *this = (SDL_AudioDevice *) inRefCon;
AudioBuffer *abuf;
UInt32 remaining, len;
void *ptr;
UInt32 i;
/* Only do anything if audio is enabled and not paused */
if (!this->enabled || this->paused) {
for (i = 0; i < ioData->mNumberBuffers; i++) {
abuf = &ioData->mBuffers[i];
SDL_memset(abuf->mData, this->spec.silence, abuf->mDataByteSize);
}
return 0;
}
/* No SDL conversion should be needed here, ever, since we accept
any input format in OpenAudio, and leave the conversion to CoreAudio.
*/
/*
SDL_assert(!this->convert.needed);
SDL_assert(this->spec.channels == ioData->mNumberChannels);
*/
for (i = 0; i < ioData->mNumberBuffers; i++) {
abuf = &ioData->mBuffers[i];
remaining = abuf->mDataByteSize;
ptr = abuf->mData;
while (remaining > 0) {
if (this->hidden->bufferOffset >= this->hidden->bufferSize) {
/* Generate the data */
SDL_LockMutex(this->mixer_lock);
(*this->spec.callback)(this->spec.userdata,
this->hidden->buffer, this->hidden->bufferSize);
SDL_UnlockMutex(this->mixer_lock);
this->hidden->bufferOffset = 0;
}
len = this->hidden->bufferSize - this->hidden->bufferOffset;
if (len > remaining)
len = remaining;
SDL_memcpy(ptr, (char *)this->hidden->buffer +
this->hidden->bufferOffset, len);
ptr = (char *)ptr + len;
remaining -= len;
this->hidden->bufferOffset += len;
}
}
return 0;
}
static OSStatus
inputCallback(void *inRefCon,
AudioUnitRenderActionFlags * ioActionFlags,
const AudioTimeStamp * inTimeStamp,
UInt32 inBusNumber, UInt32 inNumberFrames,
AudioBufferList * ioData)
{
/* err = AudioUnitRender(afr->fAudioUnit, ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, afr->fAudioBuffer); */
/* !!! FIXME: write me! */
return noErr;
}
static void
COREAUDIO_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->audioUnitOpened) {
OSStatus result = noErr;
AURenderCallbackStruct callback;
const AudioUnitElement output_bus = 0;
const AudioUnitElement input_bus = 1;
const int iscapture = this->iscapture;
const AudioUnitElement bus =
((iscapture) ? input_bus : output_bus);
const AudioUnitScope scope =
((iscapture) ? kAudioUnitScope_Output :
kAudioUnitScope_Input);
/* stop processing the audio unit */
result = AudioOutputUnitStop(this->hidden->audioUnit);
/* Remove the input callback */
SDL_memset(&callback, 0, sizeof(AURenderCallbackStruct));
result = AudioUnitSetProperty(this->hidden->audioUnit,
kAudioUnitProperty_SetRenderCallback,
scope, bus, &callback,
sizeof(callback));
#if MACOSX_COREAUDIO
CloseComponent(this->hidden->audioUnit);
#else
AudioComponentInstanceDispose(this->hidden->audioUnit);
#endif
this->hidden->audioUnitOpened = 0;
}
SDL_free(this->hidden->buffer);
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
prepare_audiounit(_THIS, const char *devname, int iscapture,
const AudioStreamBasicDescription * strdesc)
{
OSStatus result = noErr;
AURenderCallbackStruct callback;
#if MACOSX_COREAUDIO
ComponentDescription desc;
Component comp = NULL;
#else
AudioComponentDescription desc;
AudioComponent comp = NULL;
#endif
const AudioUnitElement output_bus = 0;
const AudioUnitElement input_bus = 1;
const AudioUnitElement bus = ((iscapture) ? input_bus : output_bus);
const AudioUnitScope scope = ((iscapture) ? kAudioUnitScope_Output :
kAudioUnitScope_Input);
#if MACOSX_COREAUDIO
if (!find_device_by_name(this, devname, iscapture)) {
SDL_SetError("Couldn't find requested CoreAudio device");
return 0;
}
#endif
SDL_zero(desc);
desc.componentType = kAudioUnitType_Output;
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
#if MACOSX_COREAUDIO
desc.componentSubType = kAudioUnitSubType_DefaultOutput;
comp = FindNextComponent(NULL, &desc);
#else
desc.componentSubType = kAudioUnitSubType_RemoteIO;
comp = AudioComponentFindNext(NULL, &desc);
#endif
if (comp == NULL) {
SDL_SetError("Couldn't find requested CoreAudio component");
return 0;
}
/* Open & initialize the audio unit */
#if MACOSX_COREAUDIO
result = OpenAComponent(comp, &this->hidden->audioUnit);
CHECK_RESULT("OpenAComponent");
#else
/*
AudioComponentInstanceNew only available on iPhone OS 2.0 and Mac OS X 10.6
We can't use OpenAComponent on iPhone because it is not present
*/
result = AudioComponentInstanceNew(comp, &this->hidden->audioUnit);
CHECK_RESULT("AudioComponentInstanceNew");
#endif
this->hidden->audioUnitOpened = 1;
#if MACOSX_COREAUDIO
result = AudioUnitSetProperty(this->hidden->audioUnit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global, 0,
&this->hidden->deviceID,
sizeof(AudioDeviceID));
CHECK_RESULT
("AudioUnitSetProperty (kAudioOutputUnitProperty_CurrentDevice)");
#endif
/* Set the data format of the audio unit. */
result = AudioUnitSetProperty(this->hidden->audioUnit,
kAudioUnitProperty_StreamFormat,
scope, bus, strdesc, sizeof(*strdesc));
CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_StreamFormat)");
/* Set the audio callback */
SDL_memset(&callback, 0, sizeof(AURenderCallbackStruct));
callback.inputProc = ((iscapture) ? inputCallback : outputCallback);
callback.inputProcRefCon = this;
result = AudioUnitSetProperty(this->hidden->audioUnit,
kAudioUnitProperty_SetRenderCallback,
scope, bus, &callback, sizeof(callback));
CHECK_RESULT
("AudioUnitSetProperty (kAudioUnitProperty_SetRenderCallback)");
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
/* Allocate a sample buffer */
this->hidden->bufferOffset = this->hidden->bufferSize = this->spec.size;
this->hidden->buffer = SDL_malloc(this->hidden->bufferSize);
result = AudioUnitInitialize(this->hidden->audioUnit);
CHECK_RESULT("AudioUnitInitialize");
/* Finally, start processing of the audio unit */
result = AudioOutputUnitStart(this->hidden->audioUnit);
CHECK_RESULT("AudioOutputUnitStart");
/* We're running! */
return 1;
}
static int
COREAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
{
AudioStreamBasicDescription strdesc;
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
int valid_datatype = 0;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Setup a AudioStreamBasicDescription with the requested format */
SDL_memset(&strdesc, '\0', sizeof(AudioStreamBasicDescription));
strdesc.mFormatID = kAudioFormatLinearPCM;
strdesc.mFormatFlags = kLinearPCMFormatFlagIsPacked;
strdesc.mChannelsPerFrame = this->spec.channels;
strdesc.mSampleRate = this->spec.freq;
strdesc.mFramesPerPacket = 1;
while ((!valid_datatype) && (test_format)) {
this->spec.format = test_format;
/* Just a list of valid SDL formats, so people don't pass junk here. */
switch (test_format) {
case AUDIO_U8:
case AUDIO_S8:
case AUDIO_U16LSB:
case AUDIO_S16LSB:
case AUDIO_U16MSB:
case AUDIO_S16MSB:
case AUDIO_S32LSB:
case AUDIO_S32MSB:
case AUDIO_F32LSB:
case AUDIO_F32MSB:
valid_datatype = 1;
strdesc.mBitsPerChannel = SDL_AUDIO_BITSIZE(this->spec.format);
if (SDL_AUDIO_ISBIGENDIAN(this->spec.format))
strdesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
if (SDL_AUDIO_ISFLOAT(this->spec.format))
strdesc.mFormatFlags |= kLinearPCMFormatFlagIsFloat;
else if (SDL_AUDIO_ISSIGNED(this->spec.format))
strdesc.mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
break;
}
}
if (!valid_datatype) { /* shouldn't happen, but just in case... */
COREAUDIO_CloseDevice(this);
return SDL_SetError("Unsupported audio format");
}
strdesc.mBytesPerFrame =
strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
strdesc.mBytesPerPacket =
strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
if (!prepare_audiounit(this, devname, iscapture, &strdesc)) {
COREAUDIO_CloseDevice(this);
return -1; /* prepare_audiounit() will call SDL_SetError()... */
}
return 0; /* good to go. */
}
static int
COREAUDIO_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->OpenDevice = COREAUDIO_OpenDevice;
impl->CloseDevice = COREAUDIO_CloseDevice;
#if MACOSX_COREAUDIO
impl->DetectDevices = COREAUDIO_DetectDevices;
#else
impl->OnlyHasDefaultOutputDevice = 1;
/* Set category to ambient sound so that other music continues playing.
You can change this at runtime in your own code if you need different
behavior. If this is common, we can add an SDL hint for this.
*/
AudioSessionInitialize(NULL, NULL, NULL, nil);
UInt32 category = kAudioSessionCategory_AmbientSound;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(UInt32), &category);
#endif
impl->ProvidesOwnCallbackThread = 1;
return 1; /* this audio target is available. */
}
AudioBootStrap COREAUDIO_bootstrap = {
"coreaudio", "CoreAudio", COREAUDIO_Init, 0
};
/* vi: set ts=4 sw=4 expandtab: */

57
src/audio/coreaudio/SDL_coreaudio.h Normal file
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@@ -0,0 +1,57 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_coreaudio_h
#define _SDL_coreaudio_h
#include "../SDL_sysaudio.h"
#if !defined(__IPHONEOS__)
#define MACOSX_COREAUDIO 1
#endif
#if MACOSX_COREAUDIO
#include <CoreAudio/CoreAudio.h>
#include <CoreServices/CoreServices.h>
#else
#include <AudioToolbox/AudioToolbox.h>
#endif
#include <AudioUnit/AudioUnit.h>
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
AudioUnit audioUnit;
int audioUnitOpened;
void *buffer;
UInt32 bufferOffset;
UInt32 bufferSize;
#if MACOSX_COREAUDIO
AudioDeviceID deviceID;
#endif
};
#endif /* _SDL_coreaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

558
src/audio/directsound/SDL_directsound.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_DSOUND
/* Allow access to a raw mixing buffer */
#include "SDL_timer.h"
#include "SDL_loadso.h"
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "SDL_directsound.h"
#ifndef WAVE_FORMAT_IEEE_FLOAT
#define WAVE_FORMAT_IEEE_FLOAT 0x0003
#endif
/* DirectX function pointers for audio */
static void* DSoundDLL = NULL;
typedef HRESULT(WINAPI*fnDirectSoundCreate8)(LPGUID,LPDIRECTSOUND*,LPUNKNOWN);
typedef HRESULT(WINAPI*fnDirectSoundEnumerateW)(LPDSENUMCALLBACKW, LPVOID);
typedef HRESULT(WINAPI*fnDirectSoundCaptureEnumerateW)(LPDSENUMCALLBACKW,LPVOID);
static fnDirectSoundCreate8 pDirectSoundCreate8 = NULL;
static fnDirectSoundEnumerateW pDirectSoundEnumerateW = NULL;
static fnDirectSoundCaptureEnumerateW pDirectSoundCaptureEnumerateW = NULL;
static void
DSOUND_Unload(void)
{
pDirectSoundCreate8 = NULL;
pDirectSoundEnumerateW = NULL;
pDirectSoundCaptureEnumerateW = NULL;
if (DSoundDLL != NULL) {
SDL_UnloadObject(DSoundDLL);
DSoundDLL = NULL;
}
}
static int
DSOUND_Load(void)
{
int loaded = 0;
DSOUND_Unload();
DSoundDLL = SDL_LoadObject("DSOUND.DLL");
if (DSoundDLL == NULL) {
SDL_SetError("DirectSound: failed to load DSOUND.DLL");
} else {
/* Now make sure we have DirectX 8 or better... */
#define DSOUNDLOAD(f) { \
p##f = (fn##f) SDL_LoadFunction(DSoundDLL, #f); \
if (!p##f) loaded = 0; \
}
loaded = 1; /* will reset if necessary. */
DSOUNDLOAD(DirectSoundCreate8);
DSOUNDLOAD(DirectSoundEnumerateW);
DSOUNDLOAD(DirectSoundCaptureEnumerateW);
#undef DSOUNDLOAD
if (!loaded) {
SDL_SetError("DirectSound: System doesn't appear to have DX8.");
}
}
if (!loaded) {
DSOUND_Unload();
}
return loaded;
}
static __inline__ char *
utf16_to_utf8(const WCHAR *S)
{
/* !!! FIXME: this should be UTF-16, not UCS-2! */
return SDL_iconv_string("UTF-8", "UCS-2", (char *)(S),
(SDL_wcslen(S)+1)*sizeof(WCHAR));
}
static int
SetDSerror(const char *function, int code)
{
static const char *error;
static char errbuf[1024];
errbuf[0] = 0;
switch (code) {
case E_NOINTERFACE:
error = "Unsupported interface -- Is DirectX 8.0 or later installed?";
break;
case DSERR_ALLOCATED:
error = "Audio device in use";
break;
case DSERR_BADFORMAT:
error = "Unsupported audio format";
break;
case DSERR_BUFFERLOST:
error = "Mixing buffer was lost";
break;
case DSERR_CONTROLUNAVAIL:
error = "Control requested is not available";
break;
case DSERR_INVALIDCALL:
error = "Invalid call for the current state";
break;
case DSERR_INVALIDPARAM:
error = "Invalid parameter";
break;
case DSERR_NODRIVER:
error = "No audio device found";
break;
case DSERR_OUTOFMEMORY:
error = "Out of memory";
break;
case DSERR_PRIOLEVELNEEDED:
error = "Caller doesn't have priority";
break;
case DSERR_UNSUPPORTED:
error = "Function not supported";
break;
default:
SDL_snprintf(errbuf, SDL_arraysize(errbuf),
"%s: Unknown DirectSound error: 0x%x", function, code);
break;
}
if (!errbuf[0]) {
SDL_snprintf(errbuf, SDL_arraysize(errbuf), "%s: %s", function,
error);
}
return SDL_SetError("%s", errbuf);
}
static BOOL CALLBACK
FindAllDevs(LPGUID guid, LPCWSTR desc, LPCWSTR module, LPVOID data)
{
SDL_AddAudioDevice addfn = (SDL_AddAudioDevice) data;
if (guid != NULL) { /* skip default device */
char *str = utf16_to_utf8(desc);
if (str != NULL) {
addfn(str);
SDL_free(str); /* addfn() makes a copy of this string. */
}
}
return TRUE; /* keep enumerating. */
}
static void
DSOUND_DetectDevices(int iscapture, SDL_AddAudioDevice addfn)
{
if (iscapture) {
pDirectSoundCaptureEnumerateW(FindAllDevs, addfn);
} else {
pDirectSoundEnumerateW(FindAllDevs, addfn);
}
}
static void
DSOUND_WaitDevice(_THIS)
{
DWORD status = 0;
DWORD cursor = 0;
DWORD junk = 0;
HRESULT result = DS_OK;
/* Semi-busy wait, since we have no way of getting play notification
on a primary mixing buffer located in hardware (DirectX 5.0)
*/
result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
&junk, &cursor);
if (result != DS_OK) {
if (result == DSERR_BUFFERLOST) {
IDirectSoundBuffer_Restore(this->hidden->mixbuf);
}
#ifdef DEBUG_SOUND
SetDSerror("DirectSound GetCurrentPosition", result);
#endif
return;
}
while ((cursor / this->hidden->mixlen) == this->hidden->lastchunk) {
/* FIXME: find out how much time is left and sleep that long */
SDL_Delay(1);
/* Try to restore a lost sound buffer */
IDirectSoundBuffer_GetStatus(this->hidden->mixbuf, &status);
if ((status & DSBSTATUS_BUFFERLOST)) {
IDirectSoundBuffer_Restore(this->hidden->mixbuf);
IDirectSoundBuffer_GetStatus(this->hidden->mixbuf, &status);
if ((status & DSBSTATUS_BUFFERLOST)) {
break;
}
}
if (!(status & DSBSTATUS_PLAYING)) {
result = IDirectSoundBuffer_Play(this->hidden->mixbuf, 0, 0,
DSBPLAY_LOOPING);
if (result == DS_OK) {
continue;
}
#ifdef DEBUG_SOUND
SetDSerror("DirectSound Play", result);
#endif
return;
}
/* Find out where we are playing */
result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
&junk, &cursor);
if (result != DS_OK) {
SetDSerror("DirectSound GetCurrentPosition", result);
return;
}
}
}
static void
DSOUND_PlayDevice(_THIS)
{
/* Unlock the buffer, allowing it to play */
if (this->hidden->locked_buf) {
IDirectSoundBuffer_Unlock(this->hidden->mixbuf,
this->hidden->locked_buf,
this->hidden->mixlen, NULL, 0);
}
}
static Uint8 *
DSOUND_GetDeviceBuf(_THIS)
{
DWORD cursor = 0;
DWORD junk = 0;
HRESULT result = DS_OK;
DWORD rawlen = 0;
/* Figure out which blocks to fill next */
this->hidden->locked_buf = NULL;
result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
&junk, &cursor);
if (result == DSERR_BUFFERLOST) {
IDirectSoundBuffer_Restore(this->hidden->mixbuf);
result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
&junk, &cursor);
}
if (result != DS_OK) {
SetDSerror("DirectSound GetCurrentPosition", result);
return (NULL);
}
cursor /= this->hidden->mixlen;
#ifdef DEBUG_SOUND
/* Detect audio dropouts */
{
DWORD spot = cursor;
if (spot < this->hidden->lastchunk) {
spot += this->hidden->num_buffers;
}
if (spot > this->hidden->lastchunk + 1) {
fprintf(stderr, "Audio dropout, missed %d fragments\n",
(spot - (this->hidden->lastchunk + 1)));
}
}
#endif
this->hidden->lastchunk = cursor;
cursor = (cursor + 1) % this->hidden->num_buffers;
cursor *= this->hidden->mixlen;
/* Lock the audio buffer */
result = IDirectSoundBuffer_Lock(this->hidden->mixbuf, cursor,
this->hidden->mixlen,
(LPVOID *) & this->hidden->locked_buf,
&rawlen, NULL, &junk, 0);
if (result == DSERR_BUFFERLOST) {
IDirectSoundBuffer_Restore(this->hidden->mixbuf);
result = IDirectSoundBuffer_Lock(this->hidden->mixbuf, cursor,
this->hidden->mixlen,
(LPVOID *) & this->
hidden->locked_buf, &rawlen, NULL,
&junk, 0);
}
if (result != DS_OK) {
SetDSerror("DirectSound Lock", result);
return (NULL);
}
return (this->hidden->locked_buf);
}
static void
DSOUND_WaitDone(_THIS)
{
Uint8 *stream = DSOUND_GetDeviceBuf(this);
/* Wait for the playing chunk to finish */
if (stream != NULL) {
SDL_memset(stream, this->spec.silence, this->hidden->mixlen);
DSOUND_PlayDevice(this);
}
DSOUND_WaitDevice(this);
/* Stop the looping sound buffer */
IDirectSoundBuffer_Stop(this->hidden->mixbuf);
}
static void
DSOUND_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->sound != NULL) {
if (this->hidden->mixbuf != NULL) {
/* Clean up the audio buffer */
IDirectSoundBuffer_Release(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
IDirectSound_Release(this->hidden->sound);
this->hidden->sound = NULL;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
/* This function tries to create a secondary audio buffer, and returns the
number of audio chunks available in the created buffer.
*/
static int
CreateSecondary(_THIS, HWND focus)
{
LPDIRECTSOUND sndObj = this->hidden->sound;
LPDIRECTSOUNDBUFFER *sndbuf = &this->hidden->mixbuf;
Uint32 chunksize = this->spec.size;
const int numchunks = 8;
HRESULT result = DS_OK;
DSBUFFERDESC format;
LPVOID pvAudioPtr1, pvAudioPtr2;
DWORD dwAudioBytes1, dwAudioBytes2;
WAVEFORMATEX wfmt;
SDL_zero(wfmt);
if (SDL_AUDIO_ISFLOAT(this->spec.format)) {
wfmt.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
} else {
wfmt.wFormatTag = WAVE_FORMAT_PCM;
}
wfmt.wBitsPerSample = SDL_AUDIO_BITSIZE(this->spec.format);
wfmt.nChannels = this->spec.channels;
wfmt.nSamplesPerSec = this->spec.freq;
wfmt.nBlockAlign = wfmt.nChannels * (wfmt.wBitsPerSample / 8);
wfmt.nAvgBytesPerSec = wfmt.nSamplesPerSec * wfmt.nBlockAlign;
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(&this->spec);
/* Try to set primary mixing privileges */
if (focus) {
result = IDirectSound_SetCooperativeLevel(sndObj,
focus, DSSCL_PRIORITY);
} else {
result = IDirectSound_SetCooperativeLevel(sndObj,
GetDesktopWindow(),
DSSCL_NORMAL);
}
if (result != DS_OK) {
return SetDSerror("DirectSound SetCooperativeLevel", result);
}
/* Try to create the secondary buffer */
SDL_zero(format);
format.dwSize = sizeof(format);
format.dwFlags = DSBCAPS_GETCURRENTPOSITION2;
if (!focus) {
format.dwFlags |= DSBCAPS_GLOBALFOCUS;
} else {
format.dwFlags |= DSBCAPS_STICKYFOCUS;
}
format.dwBufferBytes = numchunks * chunksize;
if ((format.dwBufferBytes < DSBSIZE_MIN) ||
(format.dwBufferBytes > DSBSIZE_MAX)) {
return SDL_SetError("Sound buffer size must be between %d and %d",
DSBSIZE_MIN / numchunks, DSBSIZE_MAX / numchunks);
}
format.dwReserved = 0;
format.lpwfxFormat = &wfmt;
result = IDirectSound_CreateSoundBuffer(sndObj, &format, sndbuf, NULL);
if (result != DS_OK) {
return SetDSerror("DirectSound CreateSoundBuffer", result);
}
IDirectSoundBuffer_SetFormat(*sndbuf, &wfmt);
/* Silence the initial audio buffer */
result = IDirectSoundBuffer_Lock(*sndbuf, 0, format.dwBufferBytes,
(LPVOID *) & pvAudioPtr1, &dwAudioBytes1,
(LPVOID *) & pvAudioPtr2, &dwAudioBytes2,
DSBLOCK_ENTIREBUFFER);
if (result == DS_OK) {
SDL_memset(pvAudioPtr1, this->spec.silence, dwAudioBytes1);
IDirectSoundBuffer_Unlock(*sndbuf,
(LPVOID) pvAudioPtr1, dwAudioBytes1,
(LPVOID) pvAudioPtr2, dwAudioBytes2);
}
/* We're ready to go */
return (numchunks);
}
typedef struct FindDevGUIDData
{
const char *devname;
GUID guid;
int found;
} FindDevGUIDData;
static BOOL CALLBACK
FindDevGUID(LPGUID guid, LPCWSTR desc, LPCWSTR module, LPVOID _data)
{
if (guid != NULL) { /* skip the default device. */
FindDevGUIDData *data = (FindDevGUIDData *) _data;
char *str = utf16_to_utf8(desc);
const int match = (SDL_strcmp(str, data->devname) == 0);
SDL_free(str);
if (match) {
data->found = 1;
SDL_memcpy(&data->guid, guid, sizeof (data->guid));
return FALSE; /* found it! stop enumerating. */
}
}
return TRUE; /* keep enumerating. */
}
static int
DSOUND_OpenDevice(_THIS, const char *devname, int iscapture)
{
HRESULT result;
SDL_bool valid_format = SDL_FALSE;
SDL_bool tried_format = SDL_FALSE;
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
FindDevGUIDData devguid;
LPGUID guid = NULL;
if (devname != NULL) {
devguid.found = 0;
devguid.devname = devname;
if (iscapture)
pDirectSoundCaptureEnumerateW(FindDevGUID, &devguid);
else
pDirectSoundEnumerateW(FindDevGUID, &devguid);
if (!devguid.found) {
return SDL_SetError("DirectSound: Requested device not found");
}
guid = &devguid.guid;
}
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Open the audio device */
result = pDirectSoundCreate8(guid, &this->hidden->sound, NULL);
if (result != DS_OK) {
DSOUND_CloseDevice(this);
return SetDSerror("DirectSoundCreate", result);
}
while ((!valid_format) && (test_format)) {
switch (test_format) {
case AUDIO_U8:
case AUDIO_S16:
case AUDIO_S32:
case AUDIO_F32:
tried_format = SDL_TRUE;
this->spec.format = test_format;
this->hidden->num_buffers = CreateSecondary(this, NULL);
if (this->hidden->num_buffers > 0) {
valid_format = SDL_TRUE;
}
break;
}
test_format = SDL_NextAudioFormat();
}
if (!valid_format) {
DSOUND_CloseDevice(this);
if (tried_format) {
return -1; // CreateSecondary() should have called SDL_SetError().
}
return SDL_SetError("DirectSound: Unsupported audio format");
}
/* The buffer will auto-start playing in DSOUND_WaitDevice() */
this->hidden->mixlen = this->spec.size;
return 0; /* good to go. */
}
static void
DSOUND_Deinitialize(void)
{
DSOUND_Unload();
}
static int
DSOUND_Init(SDL_AudioDriverImpl * impl)
{
if (!DSOUND_Load()) {
return 0;
}
/* Set the function pointers */
impl->DetectDevices = DSOUND_DetectDevices;
impl->OpenDevice = DSOUND_OpenDevice;
impl->PlayDevice = DSOUND_PlayDevice;
impl->WaitDevice = DSOUND_WaitDevice;
impl->WaitDone = DSOUND_WaitDone;
impl->GetDeviceBuf = DSOUND_GetDeviceBuf;
impl->CloseDevice = DSOUND_CloseDevice;
impl->Deinitialize = DSOUND_Deinitialize;
return 1; /* this audio target is available. */
}
AudioBootStrap DSOUND_bootstrap = {
"directsound", "DirectSound", DSOUND_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_DSOUND */
/* vi: set ts=4 sw=4 expandtab: */

46
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_directsound_h
#define _SDL_directsound_h
#include "directx.h"
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
/* The DirectSound objects */
struct SDL_PrivateAudioData
{
LPDIRECTSOUND sound;
LPDIRECTSOUNDBUFFER mixbuf;
int num_buffers;
int mixlen;
DWORD lastchunk;
Uint8 *locked_buf;
};
#endif /* _SDL_directsound_h */
/* vi: set ts=4 sw=4 expandtab: */

81
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#ifndef _directx_h
#define _directx_h
/* Include all of the DirectX 8.0 headers and adds any necessary tweaks */
#include "../../core/windows/SDL_windows.h"
#include <mmsystem.h>
#ifndef WIN32
#define WIN32
#endif
#undef WINNT
/* Far pointers don't exist in 32-bit code */
#ifndef FAR
#define FAR
#endif
/* Error codes not yet included in Win32 API header files */
#ifndef MAKE_HRESULT
#define MAKE_HRESULT(sev,fac,code) \
((HRESULT)(((unsigned long)(sev)<<31) | ((unsigned long)(fac)<<16) | ((unsigned long)(code))))
#endif
#ifndef S_OK
#define S_OK (HRESULT)0x00000000L
#endif
#ifndef SUCCEEDED
#define SUCCEEDED(x) ((HRESULT)(x) >= 0)
#endif
#ifndef FAILED
#define FAILED(x) ((HRESULT)(x)<0)
#endif
#ifndef E_FAIL
#define E_FAIL (HRESULT)0x80000008L
#endif
#ifndef E_NOINTERFACE
#define E_NOINTERFACE (HRESULT)0x80004002L
#endif
#ifndef E_OUTOFMEMORY
#define E_OUTOFMEMORY (HRESULT)0x8007000EL
#endif
#ifndef E_INVALIDARG
#define E_INVALIDARG (HRESULT)0x80070057L
#endif
#ifndef E_NOTIMPL
#define E_NOTIMPL (HRESULT)0x80004001L
#endif
#ifndef REGDB_E_CLASSNOTREG
#define REGDB_E_CLASSNOTREG (HRESULT)0x80040154L
#endif
/* Severity codes */
#ifndef SEVERITY_ERROR
#define SEVERITY_ERROR 1
#endif
/* Error facility codes */
#ifndef FACILITY_WIN32
#define FACILITY_WIN32 7
#endif
#ifndef FIELD_OFFSET
#define FIELD_OFFSET(type, field) ((LONG)&(((type *)0)->field))
#endif
/* DirectX headers (if it isn't included, I haven't tested it yet)
*/
/* We need these defines to mark what version of DirectX API we use */
#define DIRECTDRAW_VERSION 0x0700
#define DIRECTSOUND_VERSION 0x0800
#define DIRECTINPUT_VERSION 0x0500
#include <ddraw.h>
#include <dsound.h>
#include <dinput.h>
#endif /* _directx_h */
/* vi: set ts=4 sw=4 expandtab: */

165
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_DISK
/* Output raw audio data to a file. */
#if HAVE_STDIO_H
#include <stdio.h>
#endif
#include "SDL_rwops.h"
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_diskaudio.h"
/* environment variables and defaults. */
#define DISKENVR_OUTFILE "SDL_DISKAUDIOFILE"
#define DISKDEFAULT_OUTFILE "sdlaudio.raw"
#define DISKENVR_WRITEDELAY "SDL_DISKAUDIODELAY"
#define DISKDEFAULT_WRITEDELAY 150
static const char *
DISKAUD_GetOutputFilename(const char *devname)
{
if (devname == NULL) {
devname = SDL_getenv(DISKENVR_OUTFILE);
if (devname == NULL) {
devname = DISKDEFAULT_OUTFILE;
}
}
return devname;
}
/* This function waits until it is possible to write a full sound buffer */
static void
DISKAUD_WaitDevice(_THIS)
{
SDL_Delay(this->hidden->write_delay);
}
static void
DISKAUD_PlayDevice(_THIS)
{
size_t written;
/* Write the audio data */
written = SDL_RWwrite(this->hidden->output,
this->hidden->mixbuf, 1, this->hidden->mixlen);
/* If we couldn't write, assume fatal error for now */
if (written != this->hidden->mixlen) {
this->enabled = 0;
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", written);
#endif
}
static Uint8 *
DISKAUD_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static void
DISKAUD_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->output != NULL) {
SDL_RWclose(this->hidden->output);
this->hidden->output = NULL;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
DISKAUD_OpenDevice(_THIS, const char *devname, int iscapture)
{
const char *envr = SDL_getenv(DISKENVR_WRITEDELAY);
const char *fname = DISKAUD_GetOutputFilename(devname);
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc(sizeof(*this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, sizeof(*this->hidden));
this->hidden->mixlen = this->spec.size;
this->hidden->write_delay =
(envr) ? SDL_atoi(envr) : DISKDEFAULT_WRITEDELAY;
/* Open the audio device */
this->hidden->output = SDL_RWFromFile(fname, "wb");
if (this->hidden->output == NULL) {
DISKAUD_CloseDevice(this);
return -1;
}
/* Allocate mixing buffer */
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
DISKAUD_CloseDevice(this);
return -1;
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
#if HAVE_STDIO_H
fprintf(stderr,
"WARNING: You are using the SDL disk writer audio driver!\n"
" Writing to file [%s].\n", fname);
#endif
/* We're ready to rock and roll. :-) */
return 0;
}
static int
DISKAUD_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->OpenDevice = DISKAUD_OpenDevice;
impl->WaitDevice = DISKAUD_WaitDevice;
impl->PlayDevice = DISKAUD_PlayDevice;
impl->GetDeviceBuf = DISKAUD_GetDeviceBuf;
impl->CloseDevice = DISKAUD_CloseDevice;
return 1; /* this audio target is available. */
}
AudioBootStrap DISKAUD_bootstrap = {
"disk", "direct-to-disk audio", DISKAUD_Init, 1
};
#endif /* SDL_AUDIO_DRIVER_DISK */
/* vi: set ts=4 sw=4 expandtab: */

42
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_diskaudio_h
#define _SDL_diskaudio_h
#include "SDL_rwops.h"
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The file descriptor for the audio device */
SDL_RWops *output;
Uint8 *mixbuf;
Uint32 mixlen;
Uint32 write_delay;
};
#endif /* _SDL_diskaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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src/audio/dsp/SDL_dspaudio.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_OSS
/* Allow access to a raw mixing buffer */
#include <stdio.h> /* For perror() */
#include <string.h> /* For strerror() */
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#if SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H
/* This is installed on some systems */
#include <soundcard.h>
#else
/* This is recommended by OSS */
#include <sys/soundcard.h>
#endif
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "../SDL_audiodev_c.h"
#include "SDL_dspaudio.h"
static void
DSP_DetectDevices(int iscapture, SDL_AddAudioDevice addfn)
{
SDL_EnumUnixAudioDevices(iscapture, 0, NULL, addfn);
}
static void
DSP_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->audio_fd >= 0) {
close(this->hidden->audio_fd);
this->hidden->audio_fd = -1;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
DSP_OpenDevice(_THIS, const char *devname, int iscapture)
{
const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
int format;
int value;
int frag_spec;
SDL_AudioFormat test_format;
/* We don't care what the devname is...we'll try to open anything. */
/* ...but default to first name in the list... */
if (devname == NULL) {
devname = SDL_GetAudioDeviceName(0, iscapture);
if (devname == NULL) {
return SDL_SetError("No such audio device");
}
}
/* Make sure fragment size stays a power of 2, or OSS fails. */
/* I don't know which of these are actually legal values, though... */
if (this->spec.channels > 8)
this->spec.channels = 8;
else if (this->spec.channels > 4)
this->spec.channels = 4;
else if (this->spec.channels > 2)
this->spec.channels = 2;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Open the audio device */
this->hidden->audio_fd = open(devname, flags, 0);
if (this->hidden->audio_fd < 0) {
DSP_CloseDevice(this);
return SDL_SetError("Couldn't open %s: %s", devname, strerror(errno));
}
this->hidden->mixbuf = NULL;
/* Make the file descriptor use blocking writes with fcntl() */
{
long ctlflags;
ctlflags = fcntl(this->hidden->audio_fd, F_GETFL);
ctlflags &= ~O_NONBLOCK;
if (fcntl(this->hidden->audio_fd, F_SETFL, ctlflags) < 0) {
DSP_CloseDevice(this);
return SDL_SetError("Couldn't set audio blocking mode");
}
}
/* Get a list of supported hardware formats */
if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_GETFMTS, &value) < 0) {
perror("SNDCTL_DSP_GETFMTS");
DSP_CloseDevice(this);
return SDL_SetError("Couldn't get audio format list");
}
/* Try for a closest match on audio format */
format = 0;
for (test_format = SDL_FirstAudioFormat(this->spec.format);
!format && test_format;) {
#ifdef DEBUG_AUDIO
fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
#endif
switch (test_format) {
case AUDIO_U8:
if (value & AFMT_U8) {
format = AFMT_U8;
}
break;
case AUDIO_S16LSB:
if (value & AFMT_S16_LE) {
format = AFMT_S16_LE;
}
break;
case AUDIO_S16MSB:
if (value & AFMT_S16_BE) {
format = AFMT_S16_BE;
}
break;
#if 0
/*
* These formats are not used by any real life systems so they are not
* needed here.
*/
case AUDIO_S8:
if (value & AFMT_S8) {
format = AFMT_S8;
}
break;
case AUDIO_U16LSB:
if (value & AFMT_U16_LE) {
format = AFMT_U16_LE;
}
break;
case AUDIO_U16MSB:
if (value & AFMT_U16_BE) {
format = AFMT_U16_BE;
}
break;
#endif
default:
format = 0;
break;
}
if (!format) {
test_format = SDL_NextAudioFormat();
}
}
if (format == 0) {
DSP_CloseDevice(this);
return SDL_SetError("Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
/* Set the audio format */
value = format;
if ((ioctl(this->hidden->audio_fd, SNDCTL_DSP_SETFMT, &value) < 0) ||
(value != format)) {
perror("SNDCTL_DSP_SETFMT");
DSP_CloseDevice(this);
return SDL_SetError("Couldn't set audio format");
}
/* Set the number of channels of output */
value = this->spec.channels;
if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_CHANNELS, &value) < 0) {
perror("SNDCTL_DSP_CHANNELS");
DSP_CloseDevice(this);
return SDL_SetError("Cannot set the number of channels");
}
this->spec.channels = value;
/* Set the DSP frequency */
value = this->spec.freq;
if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SPEED, &value) < 0) {
perror("SNDCTL_DSP_SPEED");
DSP_CloseDevice(this);
return SDL_SetError("Couldn't set audio frequency");
}
this->spec.freq = value;
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
/* Determine the power of two of the fragment size */
for (frag_spec = 0; (0x01U << frag_spec) < this->spec.size; ++frag_spec);
if ((0x01U << frag_spec) != this->spec.size) {
DSP_CloseDevice(this);
return SDL_SetError("Fragment size must be a power of two");
}
frag_spec |= 0x00020000; /* two fragments, for low latency */
/* Set the audio buffering parameters */
#ifdef DEBUG_AUDIO
fprintf(stderr, "Requesting %d fragments of size %d\n",
(frag_spec >> 16), 1 << (frag_spec & 0xFFFF));
#endif
if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SETFRAGMENT, &frag_spec) < 0) {
perror("SNDCTL_DSP_SETFRAGMENT");
}
#ifdef DEBUG_AUDIO
{
audio_buf_info info;
ioctl(this->hidden->audio_fd, SNDCTL_DSP_GETOSPACE, &info);
fprintf(stderr, "fragments = %d\n", info.fragments);
fprintf(stderr, "fragstotal = %d\n", info.fragstotal);
fprintf(stderr, "fragsize = %d\n", info.fragsize);
fprintf(stderr, "bytes = %d\n", info.bytes);
}
#endif
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
DSP_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
/* We're ready to rock and roll. :-) */
return 0;
}
static void
DSP_PlayDevice(_THIS)
{
const Uint8 *mixbuf = this->hidden->mixbuf;
const int mixlen = this->hidden->mixlen;
if (write(this->hidden->audio_fd, mixbuf, mixlen) == -1) {
perror("Audio write");
this->enabled = 0;
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", mixlen);
#endif
}
static Uint8 *
DSP_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static int
DSP_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->DetectDevices = DSP_DetectDevices;
impl->OpenDevice = DSP_OpenDevice;
impl->PlayDevice = DSP_PlayDevice;
impl->GetDeviceBuf = DSP_GetDeviceBuf;
impl->CloseDevice = DSP_CloseDevice;
return 1; /* this audio target is available. */
}
AudioBootStrap DSP_bootstrap = {
"dsp", "OSS /dev/dsp standard audio", DSP_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_OSS */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_dspaudio_h
#define _SDL_dspaudio_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The file descriptor for the audio device */
int audio_fd;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
};
#define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */
#endif /* _SDL_dspaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Output audio to nowhere... */
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "SDL_dummyaudio.h"
static int
DUMMYAUD_OpenDevice(_THIS, const char *devname, int iscapture)
{
return 0; /* always succeeds. */
}
static int
DUMMYAUD_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->OpenDevice = DUMMYAUD_OpenDevice;
impl->OnlyHasDefaultOutputDevice = 1;
return 1; /* this audio target is available. */
}
AudioBootStrap DUMMYAUD_bootstrap = {
"dummy", "SDL dummy audio driver", DUMMYAUD_Init, 1
};
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_dummyaudio_h
#define _SDL_dummyaudio_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The file descriptor for the audio device */
Uint8 *mixbuf;
Uint32 mixlen;
Uint32 write_delay;
Uint32 initial_calls;
};
#endif /* _SDL_dummyaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_ESD
/* Allow access to an ESD network stream mixing buffer */
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <esd.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_esdaudio.h"
#ifdef SDL_AUDIO_DRIVER_ESD_DYNAMIC
#include "SDL_name.h"
#include "SDL_loadso.h"
#else
#define SDL_NAME(X) X
#endif
#ifdef SDL_AUDIO_DRIVER_ESD_DYNAMIC
static const char *esd_library = SDL_AUDIO_DRIVER_ESD_DYNAMIC;
static void *esd_handle = NULL;
static int (*SDL_NAME(esd_open_sound)) (const char *host);
static int (*SDL_NAME(esd_close)) (int esd);
static int (*SDL_NAME(esd_play_stream)) (esd_format_t format, int rate,
const char *host, const char *name);
#define SDL_ESD_SYM(x) { #x, (void **) (char *) &SDL_NAME(x) }
static struct
{
const char *name;
void **func;
} const esd_functions[] = {
SDL_ESD_SYM(esd_open_sound),
SDL_ESD_SYM(esd_close), SDL_ESD_SYM(esd_play_stream),
};
#undef SDL_ESD_SYM
static void
UnloadESDLibrary()
{
if (esd_handle != NULL) {
SDL_UnloadObject(esd_handle);
esd_handle = NULL;
}
}
static int
LoadESDLibrary(void)
{
int i, retval = -1;
if (esd_handle == NULL) {
esd_handle = SDL_LoadObject(esd_library);
if (esd_handle) {
retval = 0;
for (i = 0; i < SDL_arraysize(esd_functions); ++i) {
*esd_functions[i].func =
SDL_LoadFunction(esd_handle, esd_functions[i].name);
if (!*esd_functions[i].func) {
retval = -1;
UnloadESDLibrary();
break;
}
}
}
}
return retval;
}
#else
static void
UnloadESDLibrary()
{
return;
}
static int
LoadESDLibrary(void)
{
return 0;
}
#endif /* SDL_AUDIO_DRIVER_ESD_DYNAMIC */
/* This function waits until it is possible to write a full sound buffer */
static void
ESD_WaitDevice(_THIS)
{
Sint32 ticks;
/* Check to see if the thread-parent process is still alive */
{
static int cnt = 0;
/* Note that this only works with thread implementations
that use a different process id for each thread.
*/
/* Check every 10 loops */
if (this->hidden->parent && (((++cnt) % 10) == 0)) {
if (kill(this->hidden->parent, 0) < 0 && errno == ESRCH) {
this->enabled = 0;
}
}
}
/* Use timer for general audio synchronization */
ticks =
((Sint32) (this->hidden->next_frame - SDL_GetTicks())) - FUDGE_TICKS;
if (ticks > 0) {
SDL_Delay(ticks);
}
}
static void
ESD_PlayDevice(_THIS)
{
int written = 0;
/* Write the audio data, checking for EAGAIN on broken audio drivers */
do {
written = write(this->hidden->audio_fd,
this->hidden->mixbuf, this->hidden->mixlen);
if ((written < 0) && ((errno == 0) || (errno == EAGAIN))) {
SDL_Delay(1); /* Let a little CPU time go by */
}
} while ((written < 0) &&
((errno == 0) || (errno == EAGAIN) || (errno == EINTR)));
/* Set the next write frame */
this->hidden->next_frame += this->hidden->frame_ticks;
/* If we couldn't write, assume fatal error for now */
if (written < 0) {
this->enabled = 0;
}
}
static Uint8 *
ESD_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static void
ESD_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->audio_fd >= 0) {
SDL_NAME(esd_close) (this->hidden->audio_fd);
this->hidden->audio_fd = -1;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
/* Try to get the name of the program */
static char *
get_progname(void)
{
char *progname = NULL;
#ifdef __LINUX__
FILE *fp;
static char temp[BUFSIZ];
SDL_snprintf(temp, SDL_arraysize(temp), "/proc/%d/cmdline", getpid());
fp = fopen(temp, "r");
if (fp != NULL) {
if (fgets(temp, sizeof(temp) - 1, fp)) {
progname = SDL_strrchr(temp, '/');
if (progname == NULL) {
progname = temp;
} else {
progname = progname + 1;
}
}
fclose(fp);
}
#endif
return (progname);
}
static int
ESD_OpenDevice(_THIS, const char *devname, int iscapture)
{
esd_format_t format = (ESD_STREAM | ESD_PLAY);
SDL_AudioFormat test_format = 0;
int found = 0;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
this->hidden->audio_fd = -1;
/* Convert audio spec to the ESD audio format */
/* Try for a closest match on audio format */
for (test_format = SDL_FirstAudioFormat(this->spec.format);
!found && test_format; test_format = SDL_NextAudioFormat()) {
#ifdef DEBUG_AUDIO
fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
#endif
found = 1;
switch (test_format) {
case AUDIO_U8:
format |= ESD_BITS8;
break;
case AUDIO_S16SYS:
format |= ESD_BITS16;
break;
default:
found = 0;
break;
}
}
if (!found) {
ESD_CloseDevice(this);
return SDL_SetError("Couldn't find any hardware audio formats");
}
if (this->spec.channels == 1) {
format |= ESD_MONO;
} else {
format |= ESD_STEREO;
}
#if 0
this->spec.samples = ESD_BUF_SIZE; /* Darn, no way to change this yet */
#endif
/* Open a connection to the ESD audio server */
this->hidden->audio_fd =
SDL_NAME(esd_play_stream) (format, this->spec.freq, NULL,
get_progname());
if (this->hidden->audio_fd < 0) {
ESD_CloseDevice(this);
return SDL_SetError("Couldn't open ESD connection");
}
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
this->hidden->frame_ticks =
(float) (this->spec.samples * 1000) / this->spec.freq;
this->hidden->next_frame = SDL_GetTicks() + this->hidden->frame_ticks;
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
ESD_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
/* Get the parent process id (we're the parent of the audio thread) */
this->hidden->parent = getpid();
/* We're ready to rock and roll. :-) */
return 0;
}
static void
ESD_Deinitialize(void)
{
UnloadESDLibrary();
}
static int
ESD_Init(SDL_AudioDriverImpl * impl)
{
if (LoadESDLibrary() < 0) {
return 0;
} else {
int connection = 0;
/* Don't start ESD if it's not running */
SDL_setenv("ESD_NO_SPAWN", "1", 0);
connection = SDL_NAME(esd_open_sound) (NULL);
if (connection < 0) {
UnloadESDLibrary();
SDL_SetError("ESD: esd_open_sound failed (no audio server?)");
return 0;
}
SDL_NAME(esd_close) (connection);
}
/* Set the function pointers */
impl->OpenDevice = ESD_OpenDevice;
impl->PlayDevice = ESD_PlayDevice;
impl->WaitDevice = ESD_WaitDevice;
impl->GetDeviceBuf = ESD_GetDeviceBuf;
impl->CloseDevice = ESD_CloseDevice;
impl->Deinitialize = ESD_Deinitialize;
impl->OnlyHasDefaultOutputDevice = 1;
return 1; /* this audio target is available. */
}
AudioBootStrap ESD_bootstrap = {
"esd", "Enlightened Sound Daemon", ESD_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_ESD */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_esdaudio_h
#define _SDL_esdaudio_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The file descriptor for the audio device */
int audio_fd;
/* The parent process id, to detect when application quits */
pid_t parent;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
/* Support for audio timing using a timer */
float frame_ticks;
float next_frame;
};
#define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */
#endif /* _SDL_esdaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_FUSIONSOUND
/* Allow access to a raw mixing buffer */
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include <unistd.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_fsaudio.h"
#include <fusionsound/fusionsound_version.h>
/* #define SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC "libfusionsound.so" */
#ifdef SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC
#include "SDL_name.h"
#include "SDL_loadso.h"
#else
#define SDL_NAME(X) X
#endif
#if (FUSIONSOUND_MAJOR_VERSION == 1) && (FUSIONSOUND_MINOR_VERSION < 1)
typedef DFBResult DirectResult;
#endif
/* Buffers to use - more than 2 gives a lot of latency */
#define FUSION_BUFFERS (2)
#ifdef SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC
static const char *fs_library = SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC;
static void *fs_handle = NULL;
static DirectResult (*SDL_NAME(FusionSoundInit)) (int *argc, char *(*argv[]));
static DirectResult (*SDL_NAME(FusionSoundCreate)) (IFusionSound **
ret_interface);
#define SDL_FS_SYM(x) { #x, (void **) (char *) &SDL_NAME(x) }
static struct
{
const char *name;
void **func;
} fs_functions[] = {
/* *INDENT-OFF* */
SDL_FS_SYM(FusionSoundInit),
SDL_FS_SYM(FusionSoundCreate),
/* *INDENT-ON* */
};
#undef SDL_FS_SYM
static void
UnloadFusionSoundLibrary()
{
if (fs_handle != NULL) {
SDL_UnloadObject(fs_handle);
fs_handle = NULL;
}
}
static int
LoadFusionSoundLibrary(void)
{
int i, retval = -1;
if (fs_handle == NULL) {
fs_handle = SDL_LoadObject(fs_library);
if (fs_handle != NULL) {
retval = 0;
for (i = 0; i < SDL_arraysize(fs_functions); ++i) {
*fs_functions[i].func =
SDL_LoadFunction(fs_handle, fs_functions[i].name);
if (!*fs_functions[i].func) {
retval = -1;
UnloadFusionSoundLibrary();
break;
}
}
}
}
return retval;
}
#else
static void
UnloadFusionSoundLibrary()
{
return;
}
static int
LoadFusionSoundLibrary(void)
{
return 0;
}
#endif /* SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC */
/* This function waits until it is possible to write a full sound buffer */
static void
SDL_FS_WaitDevice(_THIS)
{
this->hidden->stream->Wait(this->hidden->stream,
this->hidden->mixsamples);
}
static void
SDL_FS_PlayDevice(_THIS)
{
DirectResult ret;
ret = this->hidden->stream->Write(this->hidden->stream,
this->hidden->mixbuf,
this->hidden->mixsamples);
/* If we couldn't write, assume fatal error for now */
if (ret) {
this->enabled = 0;
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", this->hidden->mixlen);
#endif
}
static void
SDL_FS_WaitDone(_THIS)
{
this->hidden->stream->Wait(this->hidden->stream,
this->hidden->mixsamples * FUSION_BUFFERS);
}
static Uint8 *
SDL_FS_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static void
SDL_FS_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->stream) {
this->hidden->stream->Release(this->hidden->stream);
this->hidden->stream = NULL;
}
if (this->hidden->fs) {
this->hidden->fs->Release(this->hidden->fs);
this->hidden->fs = NULL;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
SDL_FS_OpenDevice(_THIS, const char *devname, int iscapture)
{
int bytes;
SDL_AudioFormat test_format = 0, format = 0;
FSSampleFormat fs_format;
FSStreamDescription desc;
DirectResult ret;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Try for a closest match on audio format */
for (test_format = SDL_FirstAudioFormat(this->spec.format);
!format && test_format;) {
#ifdef DEBUG_AUDIO
fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
#endif
switch (test_format) {
case AUDIO_U8:
fs_format = FSSF_U8;
bytes = 1;
format = 1;
break;
case AUDIO_S16SYS:
fs_format = FSSF_S16;
bytes = 2;
format = 1;
break;
case AUDIO_S32SYS:
fs_format = FSSF_S32;
bytes = 4;
format = 1;
break;
case AUDIO_F32SYS:
fs_format = FSSF_FLOAT;
bytes = 4;
format = 1;
break;
default:
format = 0;
break;
}
if (!format) {
test_format = SDL_NextAudioFormat();
}
}
if (format == 0) {
SDL_FS_CloseDevice(this);
return SDL_SetError("Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
/* Retrieve the main sound interface. */
ret = SDL_NAME(FusionSoundCreate) (&this->hidden->fs);
if (ret) {
SDL_FS_CloseDevice(this);
return SDL_SetError("Unable to initialize FusionSound: %d", ret);
}
this->hidden->mixsamples = this->spec.size / bytes / this->spec.channels;
/* Fill stream description. */
desc.flags = FSSDF_SAMPLERATE | FSSDF_BUFFERSIZE |
FSSDF_CHANNELS | FSSDF_SAMPLEFORMAT | FSSDF_PREBUFFER;
desc.samplerate = this->spec.freq;
desc.buffersize = this->spec.size * FUSION_BUFFERS;
desc.channels = this->spec.channels;
desc.prebuffer = 10;
desc.sampleformat = fs_format;
ret =
this->hidden->fs->CreateStream(this->hidden->fs, &desc,
&this->hidden->stream);
if (ret) {
SDL_FS_CloseDevice(this);
return SDL_SetError("Unable to create FusionSoundStream: %d", ret);
}
/* See what we got */
desc.flags = FSSDF_SAMPLERATE | FSSDF_BUFFERSIZE |
FSSDF_CHANNELS | FSSDF_SAMPLEFORMAT;
ret = this->hidden->stream->GetDescription(this->hidden->stream, &desc);
this->spec.freq = desc.samplerate;
this->spec.size =
desc.buffersize / FUSION_BUFFERS * bytes * desc.channels;
this->spec.channels = desc.channels;
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
SDL_FS_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
/* We're ready to rock and roll. :-) */
return 0;
}
static void
SDL_FS_Deinitialize(void)
{
UnloadFusionSoundLibrary();
}
static int
SDL_FS_Init(SDL_AudioDriverImpl * impl)
{
if (LoadFusionSoundLibrary() < 0) {
return 0;
} else {
DirectResult ret;
ret = SDL_NAME(FusionSoundInit) (NULL, NULL);
if (ret) {
UnloadFusionSoundLibrary();
SDL_SetError
("FusionSound: SDL_FS_init failed (FusionSoundInit: %d)",
ret);
return 0;
}
}
/* Set the function pointers */
impl->OpenDevice = SDL_FS_OpenDevice;
impl->PlayDevice = SDL_FS_PlayDevice;
impl->WaitDevice = SDL_FS_WaitDevice;
impl->GetDeviceBuf = SDL_FS_GetDeviceBuf;
impl->CloseDevice = SDL_FS_CloseDevice;
impl->WaitDone = SDL_FS_WaitDone;
impl->Deinitialize = SDL_FS_Deinitialize;
impl->OnlyHasDefaultOutputDevice = 1;
return 1; /* this audio target is available. */
}
AudioBootStrap FUSIONSOUND_bootstrap = {
"fusionsound", "FusionSound", SDL_FS_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_FUSIONSOUND */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_fsaudio_h
#define _SDL_fsaudio_h
#include <fusionsound/fusionsound.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* Interface */
IFusionSound *fs;
/* The stream interface for the audio device */
IFusionSoundStream *stream;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
int mixsamples;
};
#endif /* _SDL_fsaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_NAS
/* Allow access to a raw mixing buffer */
#include <signal.h>
#include <unistd.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "SDL_loadso.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_nasaudio.h"
static struct SDL_PrivateAudioData *this2 = NULL;
static void (*NAS_AuCloseServer) (AuServer *);
static void (*NAS_AuNextEvent) (AuServer *, AuBool, AuEvent *);
static AuBool(*NAS_AuDispatchEvent) (AuServer *, AuEvent *);
static AuFlowID(*NAS_AuCreateFlow) (AuServer *, AuStatus *);
static void (*NAS_AuStartFlow) (AuServer *, AuFlowID, AuStatus *);
static void (*NAS_AuSetElements)
(AuServer *, AuFlowID, AuBool, int, AuElement *, AuStatus *);
static void (*NAS_AuWriteElement)
(AuServer *, AuFlowID, int, AuUint32, AuPointer, AuBool, AuStatus *);
static AuServer *(*NAS_AuOpenServer)
(_AuConst char *, int, _AuConst char *, int, _AuConst char *, char **);
static AuEventHandlerRec *(*NAS_AuRegisterEventHandler)
(AuServer *, AuMask, int, AuID, AuEventHandlerCallback, AuPointer);
#ifdef SDL_AUDIO_DRIVER_NAS_DYNAMIC
static const char *nas_library = SDL_AUDIO_DRIVER_NAS_DYNAMIC;
static void *nas_handle = NULL;
static int
load_nas_sym(const char *fn, void **addr)
{
*addr = SDL_LoadFunction(nas_handle, fn);
if (*addr == NULL) {
return 0;
}
return 1;
}
/* cast funcs to char* first, to please GCC's strict aliasing rules. */
#define SDL_NAS_SYM(x) \
if (!load_nas_sym(#x, (void **) (char *) &NAS_##x)) return -1
#else
#define SDL_NAS_SYM(x) NAS_##x = x
#endif
static int
load_nas_syms(void)
{
SDL_NAS_SYM(AuCloseServer);
SDL_NAS_SYM(AuNextEvent);
SDL_NAS_SYM(AuDispatchEvent);
SDL_NAS_SYM(AuCreateFlow);
SDL_NAS_SYM(AuStartFlow);
SDL_NAS_SYM(AuSetElements);
SDL_NAS_SYM(AuWriteElement);
SDL_NAS_SYM(AuOpenServer);
SDL_NAS_SYM(AuRegisterEventHandler);
return 0;
}
#undef SDL_NAS_SYM
#ifdef SDL_AUDIO_DRIVER_NAS_DYNAMIC
static void
UnloadNASLibrary(void)
{
if (nas_handle != NULL) {
SDL_UnloadObject(nas_handle);
nas_handle = NULL;
}
}
static int
LoadNASLibrary(void)
{
int retval = 0;
if (nas_handle == NULL) {
nas_handle = SDL_LoadObject(nas_library);
if (nas_handle == NULL) {
/* Copy error string so we can use it in a new SDL_SetError(). */
const char *origerr = SDL_GetError();
const size_t len = SDL_strlen(origerr) + 1;
char *err = (char *) alloca(len);
SDL_strlcpy(err, origerr, len);
retval = -1;
SDL_SetError("NAS: SDL_LoadObject('%s') failed: %s\n",
nas_library, err);
} else {
retval = load_nas_syms();
if (retval < 0) {
UnloadNASLibrary();
}
}
}
return retval;
}
#else
static void
UnloadNASLibrary(void)
{
}
static int
LoadNASLibrary(void)
{
load_nas_syms();
return 0;
}
#endif /* SDL_AUDIO_DRIVER_NAS_DYNAMIC */
/* This function waits until it is possible to write a full sound buffer */
static void
NAS_WaitDevice(_THIS)
{
while (this->hidden->buf_free < this->hidden->mixlen) {
AuEvent ev;
NAS_AuNextEvent(this->hidden->aud, AuTrue, &ev);
NAS_AuDispatchEvent(this->hidden->aud, &ev);
}
}
static void
NAS_PlayDevice(_THIS)
{
while (this->hidden->mixlen > this->hidden->buf_free) {
/*
* We think the buffer is full? Yikes! Ask the server for events,
* in the hope that some of them is LowWater events telling us more
* of the buffer is free now than what we think.
*/
AuEvent ev;
NAS_AuNextEvent(this->hidden->aud, AuTrue, &ev);
NAS_AuDispatchEvent(this->hidden->aud, &ev);
}
this->hidden->buf_free -= this->hidden->mixlen;
/* Write the audio data */
NAS_AuWriteElement(this->hidden->aud, this->hidden->flow, 0,
this->hidden->mixlen, this->hidden->mixbuf, AuFalse,
NULL);
this->hidden->written += this->hidden->mixlen;
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", this->hidden->mixlen);
#endif
}
static Uint8 *
NAS_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static void
NAS_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->aud) {
NAS_AuCloseServer(this->hidden->aud);
this->hidden->aud = 0;
}
SDL_free(this->hidden);
this2 = this->hidden = NULL;
}
}
static unsigned char
sdlformat_to_auformat(unsigned int fmt)
{
switch (fmt) {
case AUDIO_U8:
return AuFormatLinearUnsigned8;
case AUDIO_S8:
return AuFormatLinearSigned8;
case AUDIO_U16LSB:
return AuFormatLinearUnsigned16LSB;
case AUDIO_U16MSB:
return AuFormatLinearUnsigned16MSB;
case AUDIO_S16LSB:
return AuFormatLinearSigned16LSB;
case AUDIO_S16MSB:
return AuFormatLinearSigned16MSB;
}
return AuNone;
}
static AuBool
event_handler(AuServer * aud, AuEvent * ev, AuEventHandlerRec * hnd)
{
switch (ev->type) {
case AuEventTypeElementNotify:
{
AuElementNotifyEvent *event = (AuElementNotifyEvent *) ev;
switch (event->kind) {
case AuElementNotifyKindLowWater:
if (this2->buf_free >= 0) {
this2->really += event->num_bytes;
gettimeofday(&this2->last_tv, 0);
this2->buf_free += event->num_bytes;
} else {
this2->buf_free = event->num_bytes;
}
break;
case AuElementNotifyKindState:
switch (event->cur_state) {
case AuStatePause:
if (event->reason != AuReasonUser) {
if (this2->buf_free >= 0) {
this2->really += event->num_bytes;
gettimeofday(&this2->last_tv, 0);
this2->buf_free += event->num_bytes;
} else {
this2->buf_free = event->num_bytes;
}
}
break;
}
}
}
}
return AuTrue;
}
static AuDeviceID
find_device(_THIS, int nch)
{
/* These "Au" things are all macros, not functions... */
int i;
for (i = 0; i < AuServerNumDevices(this->hidden->aud); i++) {
if ((AuDeviceKind(AuServerDevice(this->hidden->aud, i)) ==
AuComponentKindPhysicalOutput) &&
AuDeviceNumTracks(AuServerDevice(this->hidden->aud, i)) == nch) {
return AuDeviceIdentifier(AuServerDevice(this->hidden->aud, i));
}
}
return AuNone;
}
static int
NAS_OpenDevice(_THIS, const char *devname, int iscapture)
{
AuElement elms[3];
int buffer_size;
SDL_AudioFormat test_format, format;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Try for a closest match on audio format */
format = 0;
for (test_format = SDL_FirstAudioFormat(this->spec.format);
!format && test_format;) {
format = sdlformat_to_auformat(test_format);
if (format == AuNone) {
test_format = SDL_NextAudioFormat();
}
}
if (format == 0) {
NAS_CloseDevice(this);
return SDL_SetError("NAS: Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
this->hidden->aud = NAS_AuOpenServer("", 0, NULL, 0, NULL, NULL);
if (this->hidden->aud == 0) {
NAS_CloseDevice(this);
return SDL_SetError("NAS: Couldn't open connection to NAS server");
}
this->hidden->dev = find_device(this, this->spec.channels);
if ((this->hidden->dev == AuNone)
|| (!(this->hidden->flow = NAS_AuCreateFlow(this->hidden->aud, 0)))) {
NAS_CloseDevice(this);
return SDL_SetError("NAS: Couldn't find a fitting device on NAS server");
}
buffer_size = this->spec.freq;
if (buffer_size < 4096)
buffer_size = 4096;
if (buffer_size > 32768)
buffer_size = 32768; /* So that the buffer won't get unmanageably big. */
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
this2 = this->hidden;
AuMakeElementImportClient(elms, this->spec.freq, format,
this->spec.channels, AuTrue, buffer_size,
buffer_size / 4, 0, NULL);
AuMakeElementExportDevice(elms + 1, 0, this->hidden->dev, this->spec.freq,
AuUnlimitedSamples, 0, NULL);
NAS_AuSetElements(this->hidden->aud, this->hidden->flow, AuTrue, 2, elms,
NULL);
NAS_AuRegisterEventHandler(this->hidden->aud, AuEventHandlerIDMask, 0,
this->hidden->flow, event_handler,
(AuPointer) NULL);
NAS_AuStartFlow(this->hidden->aud, this->hidden->flow, NULL);
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
NAS_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
/* We're ready to rock and roll. :-) */
return 0;
}
static void
NAS_Deinitialize(void)
{
UnloadNASLibrary();
}
static int
NAS_Init(SDL_AudioDriverImpl * impl)
{
if (LoadNASLibrary() < 0) {
return 0;
} else {
AuServer *aud = NAS_AuOpenServer("", 0, NULL, 0, NULL, NULL);
if (aud == NULL) {
SDL_SetError("NAS: AuOpenServer() failed (no audio server?)");
return 0;
}
NAS_AuCloseServer(aud);
}
/* Set the function pointers */
impl->OpenDevice = NAS_OpenDevice;
impl->PlayDevice = NAS_PlayDevice;
impl->WaitDevice = NAS_WaitDevice;
impl->GetDeviceBuf = NAS_GetDeviceBuf;
impl->CloseDevice = NAS_CloseDevice;
impl->Deinitialize = NAS_Deinitialize;
impl->OnlyHasDefaultOutputDevice = 1; /* !!! FIXME: is this true? */
return 1; /* this audio target is available. */
}
AudioBootStrap NAS_bootstrap = {
"nas", "Network Audio System", NAS_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_NAS */
/* vi: set ts=4 sw=4 expandtab: */

56
src/audio/nas/SDL_nasaudio.h Normal file
View File

@@ -0,0 +1,56 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_nasaudio_h
#define _SDL_nasaudio_h
#ifdef __sgi
#include <nas/audiolib.h>
#else
#include <audio/audiolib.h>
#endif
#include <sys/time.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
AuServer *aud;
AuFlowID flow;
AuDeviceID dev;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
int written;
int really;
int bps;
struct timeval last_tv;
int buf_free;
};
#endif /* _SDL_nasaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

545
src/audio/paudio/SDL_paudio.c Normal file
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@@ -0,0 +1,545 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_PAUDIO
/* Allow access to a raw mixing buffer */
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "SDL_stdinc.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_paudio.h"
#define DEBUG_AUDIO 0
/* A conflict within AIX 4.3.3 <sys/> headers and probably others as well.
* I guess nobody ever uses audio... Shame over AIX header files. */
#include <sys/machine.h>
#undef BIG_ENDIAN
#include <sys/audio.h>
/* Open the audio device for playback, and don't block if busy */
/* #define OPEN_FLAGS (O_WRONLY|O_NONBLOCK) */
#define OPEN_FLAGS O_WRONLY
/* Get the name of the audio device we use for output */
#ifndef _PATH_DEV_DSP
#define _PATH_DEV_DSP "/dev/%caud%c/%c"
#endif
static char devsettings[][3] = {
{'p', '0', '1'}, {'p', '0', '2'}, {'p', '0', '3'}, {'p', '0', '4'},
{'p', '1', '1'}, {'p', '1', '2'}, {'p', '1', '3'}, {'p', '1', '4'},
{'p', '2', '1'}, {'p', '2', '2'}, {'p', '2', '3'}, {'p', '2', '4'},
{'p', '3', '1'}, {'p', '3', '2'}, {'p', '3', '3'}, {'p', '3', '4'},
{'b', '0', '1'}, {'b', '0', '2'}, {'b', '0', '3'}, {'b', '0', '4'},
{'b', '1', '1'}, {'b', '1', '2'}, {'b', '1', '3'}, {'b', '1', '4'},
{'b', '2', '1'}, {'b', '2', '2'}, {'b', '2', '3'}, {'b', '2', '4'},
{'b', '3', '1'}, {'b', '3', '2'}, {'b', '3', '3'}, {'b', '3', '4'},
{'\0', '\0', '\0'}
};
static int
OpenUserDefinedDevice(char *path, int maxlen, int flags)
{
const char *audiodev;
int fd;
/* Figure out what our audio device is */
if ((audiodev = SDL_getenv("SDL_PATH_DSP")) == NULL) {
audiodev = SDL_getenv("AUDIODEV");
}
if (audiodev == NULL) {
return -1;
}
fd = open(audiodev, flags, 0);
if (path != NULL) {
SDL_strlcpy(path, audiodev, maxlen);
path[maxlen - 1] = '\0';
}
return fd;
}
static int
OpenAudioPath(char *path, int maxlen, int flags, int classic)
{
struct stat sb;
int cycle = 0;
int fd = OpenUserDefinedDevice(path, maxlen, flags);
if (fd != -1) {
return fd;
}
/* !!! FIXME: do we really need a table here? */
while (devsettings[cycle][0] != '\0') {
char audiopath[1024];
SDL_snprintf(audiopath, SDL_arraysize(audiopath),
_PATH_DEV_DSP,
devsettings[cycle][0],
devsettings[cycle][1], devsettings[cycle][2]);
if (stat(audiopath, &sb) == 0) {
fd = open(audiopath, flags, 0);
if (fd > 0) {
if (path != NULL) {
SDL_strlcpy(path, audiopath, maxlen);
}
return fd;
}
}
}
return -1;
}
/* This function waits until it is possible to write a full sound buffer */
static void
PAUDIO_WaitDevice(_THIS)
{
fd_set fdset;
/* See if we need to use timed audio synchronization */
if (this->hidden->frame_ticks) {
/* Use timer for general audio synchronization */
Sint32 ticks;
ticks =
((Sint32) (this->hidden->next_frame - SDL_GetTicks())) -
FUDGE_TICKS;
if (ticks > 0) {
SDL_Delay(ticks);
}
} else {
audio_buffer paud_bufinfo;
/* Use select() for audio synchronization */
struct timeval timeout;
FD_ZERO(&fdset);
FD_SET(this->hidden->audio_fd, &fdset);
if (ioctl(this->hidden->audio_fd, AUDIO_BUFFER, &paud_bufinfo) < 0) {
#ifdef DEBUG_AUDIO
fprintf(stderr, "Couldn't get audio buffer information\n");
#endif
timeout.tv_sec = 10;
timeout.tv_usec = 0;
} else {
long ms_in_buf = paud_bufinfo.write_buf_time;
timeout.tv_sec = ms_in_buf / 1000;
ms_in_buf = ms_in_buf - timeout.tv_sec * 1000;
timeout.tv_usec = ms_in_buf * 1000;
#ifdef DEBUG_AUDIO
fprintf(stderr,
"Waiting for write_buf_time=%ld,%ld\n",
timeout.tv_sec, timeout.tv_usec);
#endif
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Waiting for audio to get ready\n");
#endif
if (select(this->hidden->audio_fd + 1, NULL, &fdset, NULL, &timeout)
<= 0) {
const char *message =
"Audio timeout - buggy audio driver? (disabled)";
/*
* In general we should never print to the screen,
* but in this case we have no other way of letting
* the user know what happened.
*/
fprintf(stderr, "SDL: %s - %s\n", strerror(errno), message);
this->enabled = 0;
/* Don't try to close - may hang */
this->hidden->audio_fd = -1;
#ifdef DEBUG_AUDIO
fprintf(stderr, "Done disabling audio\n");
#endif
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Ready!\n");
#endif
}
}
static void
PAUDIO_PlayDevice(_THIS)
{
int written = 0;
const Uint8 *mixbuf = this->hidden->mixbuf;
const size_t mixlen = this->hidden->mixlen;
/* Write the audio data, checking for EAGAIN on broken audio drivers */
do {
written = write(this->hidden->audio_fd, mixbuf, mixlen);
if ((written < 0) && ((errno == 0) || (errno == EAGAIN))) {
SDL_Delay(1); /* Let a little CPU time go by */
}
} while ((written < 0) &&
((errno == 0) || (errno == EAGAIN) || (errno == EINTR)));
/* If timer synchronization is enabled, set the next write frame */
if (this->hidden->frame_ticks) {
this->hidden->next_frame += this->hidden->frame_ticks;
}
/* If we couldn't write, assume fatal error for now */
if (written < 0) {
this->enabled = 0;
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", written);
#endif
}
static Uint8 *
PAUDIO_GetDeviceBuf(_THIS)
{
return this->hidden->mixbuf;
}
static void
PAUDIO_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->audio_fd >= 0) {
close(this->hidden->audio_fd);
this->hidden->audio_fd = -1;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
PAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
{
const char *workaround = SDL_getenv("SDL_DSP_NOSELECT");
char audiodev[1024];
const char *err = NULL;
int format;
int bytes_per_sample;
SDL_AudioFormat test_format;
audio_init paud_init;
audio_buffer paud_bufinfo;
audio_status paud_status;
audio_control paud_control;
audio_change paud_change;
int fd = -1;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Open the audio device */
fd = OpenAudioPath(audiodev, sizeof(audiodev), OPEN_FLAGS, 0);
this->hidden->audio_fd = fd;
if (fd < 0) {
PAUDIO_CloseDevice(this);
return SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno));
}
/*
* We can't set the buffer size - just ask the device for the maximum
* that we can have.
*/
if (ioctl(fd, AUDIO_BUFFER, &paud_bufinfo) < 0) {
PAUDIO_CloseDevice(this);
return SDL_SetError("Couldn't get audio buffer information");
}
if (this->spec.channels > 1)
this->spec.channels = 2;
else
this->spec.channels = 1;
/*
* Fields in the audio_init structure:
*
* Ignored by us:
*
* paud.loadpath[LOAD_PATH]; * DSP code to load, MWave chip only?
* paud.slot_number; * slot number of the adapter
* paud.device_id; * adapter identification number
*
* Input:
*
* paud.srate; * the sampling rate in Hz
* paud.bits_per_sample; * 8, 16, 32, ...
* paud.bsize; * block size for this rate
* paud.mode; * ADPCM, PCM, MU_LAW, A_LAW, SOURCE_MIX
* paud.channels; * 1=mono, 2=stereo
* paud.flags; * FIXED - fixed length data
* * LEFT_ALIGNED, RIGHT_ALIGNED (var len only)
* * TWOS_COMPLEMENT - 2's complement data
* * SIGNED - signed? comment seems wrong in sys/audio.h
* * BIG_ENDIAN
* paud.operation; * PLAY, RECORD
*
* Output:
*
* paud.flags; * PITCH - pitch is supported
* * INPUT - input is supported
* * OUTPUT - output is supported
* * MONITOR - monitor is supported
* * VOLUME - volume is supported
* * VOLUME_DELAY - volume delay is supported
* * BALANCE - balance is supported
* * BALANCE_DELAY - balance delay is supported
* * TREBLE - treble control is supported
* * BASS - bass control is supported
* * BESTFIT_PROVIDED - best fit returned
* * LOAD_CODE - DSP load needed
* paud.rc; * NO_PLAY - DSP code can't do play requests
* * NO_RECORD - DSP code can't do record requests
* * INVALID_REQUEST - request was invalid
* * CONFLICT - conflict with open's flags
* * OVERLOADED - out of DSP MIPS or memory
* paud.position_resolution; * smallest increment for position
*/
paud_init.srate = this->spec.freq;
paud_init.mode = PCM;
paud_init.operation = PLAY;
paud_init.channels = this->spec.channels;
/* Try for a closest match on audio format */
format = 0;
for (test_format = SDL_FirstAudioFormat(this->spec.format);
!format && test_format;) {
#ifdef DEBUG_AUDIO
fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
#endif
switch (test_format) {
case AUDIO_U8:
bytes_per_sample = 1;
paud_init.bits_per_sample = 8;
paud_init.flags = TWOS_COMPLEMENT | FIXED;
format = 1;
break;
case AUDIO_S8:
bytes_per_sample = 1;
paud_init.bits_per_sample = 8;
paud_init.flags = SIGNED | TWOS_COMPLEMENT | FIXED;
format = 1;
break;
case AUDIO_S16LSB:
bytes_per_sample = 2;
paud_init.bits_per_sample = 16;
paud_init.flags = SIGNED | TWOS_COMPLEMENT | FIXED;
format = 1;
break;
case AUDIO_S16MSB:
bytes_per_sample = 2;
paud_init.bits_per_sample = 16;
paud_init.flags = BIG_ENDIAN | SIGNED | TWOS_COMPLEMENT | FIXED;
format = 1;
break;
case AUDIO_U16LSB:
bytes_per_sample = 2;
paud_init.bits_per_sample = 16;
paud_init.flags = TWOS_COMPLEMENT | FIXED;
format = 1;
break;
case AUDIO_U16MSB:
bytes_per_sample = 2;
paud_init.bits_per_sample = 16;
paud_init.flags = BIG_ENDIAN | TWOS_COMPLEMENT | FIXED;
format = 1;
break;
default:
break;
}
if (!format) {
test_format = SDL_NextAudioFormat();
}
}
if (format == 0) {
#ifdef DEBUG_AUDIO
fprintf(stderr, "Couldn't find any hardware audio formats\n");
#endif
PAUDIO_CloseDevice(this);
return SDL_SetError("Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
/*
* We know the buffer size and the max number of subsequent writes
* that can be pending. If more than one can pend, allow the application
* to do something like double buffering between our write buffer and
* the device's own buffer that we are filling with write() anyway.
*
* We calculate this->spec.samples like this because
* SDL_CalculateAudioSpec() will give put paud_bufinfo.write_buf_cap
* (or paud_bufinfo.write_buf_cap/2) into this->spec.size in return.
*/
if (paud_bufinfo.request_buf_cap == 1) {
this->spec.samples = paud_bufinfo.write_buf_cap
/ bytes_per_sample / this->spec.channels;
} else {
this->spec.samples = paud_bufinfo.write_buf_cap
/ bytes_per_sample / this->spec.channels / 2;
}
paud_init.bsize = bytes_per_sample * this->spec.channels;
SDL_CalculateAudioSpec(&this->spec);
/*
* The AIX paud device init can't modify the values of the audio_init
* structure that we pass to it. So we don't need any recalculation
* of this stuff and no reinit call as in linux dsp code.
*
* /dev/paud supports all of the encoding formats, so we don't need
* to do anything like reopening the device, either.
*/
if (ioctl(fd, AUDIO_INIT, &paud_init) < 0) {
switch (paud_init.rc) {
case 1:
err = "Couldn't set audio format: DSP can't do play requests";
break;
case 2:
err = "Couldn't set audio format: DSP can't do record requests";
break;
case 4:
err = "Couldn't set audio format: request was invalid";
break;
case 5:
err = "Couldn't set audio format: conflict with open's flags";
break;
case 6:
err = "Couldn't set audio format: out of DSP MIPS or memory";
break;
default:
err = "Couldn't set audio format: not documented in sys/audio.h";
break;
}
}
if (err != NULL) {
PAUDIO_CloseDevice(this);
return SDL_SetError("Paudio: %s", err);
}
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
PAUDIO_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
/*
* Set some paramters: full volume, first speaker that we can find.
* Ignore the other settings for now.
*/
paud_change.input = AUDIO_IGNORE; /* the new input source */
paud_change.output = OUTPUT_1; /* EXTERNAL_SPEAKER,INTERNAL_SPEAKER,OUTPUT_1 */
paud_change.monitor = AUDIO_IGNORE; /* the new monitor state */
paud_change.volume = 0x7fffffff; /* volume level [0-0x7fffffff] */
paud_change.volume_delay = AUDIO_IGNORE; /* the new volume delay */
paud_change.balance = 0x3fffffff; /* the new balance */
paud_change.balance_delay = AUDIO_IGNORE; /* the new balance delay */
paud_change.treble = AUDIO_IGNORE; /* the new treble state */
paud_change.bass = AUDIO_IGNORE; /* the new bass state */
paud_change.pitch = AUDIO_IGNORE; /* the new pitch state */
paud_control.ioctl_request = AUDIO_CHANGE;
paud_control.request_info = (char *) &paud_change;
if (ioctl(fd, AUDIO_CONTROL, &paud_control) < 0) {
#ifdef DEBUG_AUDIO
fprintf(stderr, "Can't change audio display settings\n");
#endif
}
/*
* Tell the device to expect data. Actual start will wait for
* the first write() call.
*/
paud_control.ioctl_request = AUDIO_START;
paud_control.position = 0;
if (ioctl(fd, AUDIO_CONTROL, &paud_control) < 0) {
PAUDIO_CloseDevice(this);
#ifdef DEBUG_AUDIO
fprintf(stderr, "Can't start audio play\n");
#endif
return SDL_SetError("Can't start audio play");
}
/* Check to see if we need to use select() workaround */
if (workaround != NULL) {
this->hidden->frame_ticks = (float) (this->spec.samples * 1000) /
this->spec.freq;
this->hidden->next_frame = SDL_GetTicks() + this->hidden->frame_ticks;
}
/* We're ready to rock and roll. :-) */
return 0;
}
static int
PAUDIO_Init(SDL_AudioDriverImpl * impl)
{
/* !!! FIXME: not right for device enum? */
int fd = OpenAudioPath(NULL, 0, OPEN_FLAGS, 0);
if (fd < 0) {
SDL_SetError("PAUDIO: Couldn't open audio device");
return 0;
}
close(fd);
/* Set the function pointers */
impl->OpenDevice = DSP_OpenDevice;
impl->PlayDevice = DSP_PlayDevice;
impl->PlayDevice = DSP_WaitDevice;
impl->GetDeviceBuf = DSP_GetDeviceBuf;
impl->CloseDevice = DSP_CloseDevice;
impl->OnlyHasDefaultOutputDevice = 1; /* !!! FIXME: add device enum! */
return 1; /* this audio target is available. */
}
AudioBootStrap PAUDIO_bootstrap = {
"paud", "AIX Paudio", PAUDIO_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_PAUDIO */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_paudaudio_h
#define _SDL_paudaudio_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The file descriptor for the audio device */
int audio_fd;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
/* Support for audio timing using a timer, in addition to select() */
float frame_ticks;
float next_frame;
};
#define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */
#endif /* _SDL_paudaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <malloc.h>
#include "SDL_audio.h"
#include "SDL_error.h"
#include "SDL_timer.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "../SDL_audiodev_c.h"
#include "../SDL_sysaudio.h"
#include "SDL_pspaudio.h"
#include <pspaudio.h>
#include <pspthreadman.h>
/* The tag name used by PSP audio */
#define PSPAUD_DRIVER_NAME "psp"
static int
PSPAUD_OpenDevice(_THIS, const char *devname, int iscapture)
{
int format, mixlen, i;
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc(sizeof(*this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, sizeof(*this->hidden));
switch (this->spec.format & 0xff) {
case 8:
case 16:
this->spec.format = AUDIO_S16LSB;
break;
default:
return SDL_SetError("Unsupported audio format");
}
/* The sample count must be a multiple of 64. */
this->spec.samples = PSP_AUDIO_SAMPLE_ALIGN(this->spec.samples);
this->spec.freq = 44100;
/* Update the fragment size as size in bytes. */
// SDL_CalculateAudioSpec(this->spec); MOD
switch (this->spec.format) {
case AUDIO_U8:
this->spec.silence = 0x80;
break;
default:
this->spec.silence = 0x00;
break;
}
this->spec.size = SDL_AUDIO_BITSIZE(this->spec.format) / 8;
this->spec.size *= this->spec.channels;
this->spec.size *= this->spec.samples;
//==========================================
/* Allocate the mixing buffer. Its size and starting address must
be a multiple of 64 bytes. Our sample count is already a multiple of
64, so spec->size should be a multiple of 64 as well. */
mixlen = this->spec.size * NUM_BUFFERS;
this->hidden->rawbuf = (Uint8 *) memalign(64, mixlen);
if (this->hidden->rawbuf == NULL) {
return SDL_SetError("Couldn't allocate mixing buffer");
}
/* Setup the hardware channel. */
if (this->spec.channels == 1) {
format = PSP_AUDIO_FORMAT_MONO;
} else {
format = PSP_AUDIO_FORMAT_STEREO;
}
this->hidden->channel = sceAudioChReserve(PSP_AUDIO_NEXT_CHANNEL, this->spec.samples, format);
if (this->hidden->channel < 0) {
free(this->hidden->rawbuf);
this->hidden->rawbuf = NULL;
return SDL_SetError("Couldn't reserve hardware channel");
}
memset(this->hidden->rawbuf, 0, mixlen);
for (i = 0; i < NUM_BUFFERS; i++) {
this->hidden->mixbufs[i] = &this->hidden->rawbuf[i * this->spec.size];
}
this->hidden->next_buffer = 0;
return 0;
}
static void PSPAUD_PlayDevice(_THIS)
{
Uint8 *mixbuf = this->hidden->mixbufs[this->hidden->next_buffer];
if (this->spec.channels == 1) {
sceAudioOutputBlocking(this->hidden->channel, PSP_AUDIO_VOLUME_MAX, mixbuf);
} else {
sceAudioOutputPannedBlocking(this->hidden->channel, PSP_AUDIO_VOLUME_MAX, PSP_AUDIO_VOLUME_MAX, mixbuf);
}
this->hidden->next_buffer = (this->hidden->next_buffer + 1) % NUM_BUFFERS;
}
/* This function waits until it is possible to write a full sound buffer */
static void PSPAUD_WaitDevice(_THIS)
{
/* Because we block when sending audio, there's no need for this function to do anything. */
}
static Uint8 *PSPAUD_GetDeviceBuf(_THIS)
{
return this->hidden->mixbufs[this->hidden->next_buffer];
}
static void PSPAUD_CloseDevice(_THIS)
{
if (this->hidden->channel >= 0) {
sceAudioChRelease(this->hidden->channel);
this->hidden->channel = -1;
}
if (this->hidden->rawbuf != NULL) {
free(this->hidden->rawbuf);
this->hidden->rawbuf = NULL;
}
}
static void PSPAUD_ThreadInit(_THIS)
{
/* Increase the priority of this audio thread by 1 to put it
ahead of other SDL threads. */
SceUID thid;
SceKernelThreadInfo status;
thid = sceKernelGetThreadId();
status.size = sizeof(SceKernelThreadInfo);
if (sceKernelReferThreadStatus(thid, &status) == 0) {
sceKernelChangeThreadPriority(thid, status.currentPriority - 1);
}
}
static int
PSPAUD_Init(SDL_AudioDriverImpl * impl)
{
// Set the function pointers
impl->OpenDevice = PSPAUD_OpenDevice;
impl->PlayDevice = PSPAUD_PlayDevice;
impl->WaitDevice = PSPAUD_WaitDevice;
impl->GetDeviceBuf = PSPAUD_GetDeviceBuf;
impl->WaitDone = PSPAUD_WaitDevice;
impl->CloseDevice = PSPAUD_CloseDevice;
impl->ThreadInit = PSPAUD_ThreadInit;
//PSP audio device
impl->OnlyHasDefaultOutputDevice = 1;
/*
impl->HasCaptureSupport = 1;
impl->OnlyHasDefaultInputDevice = 1;
*/
/*
impl->DetectDevices = DSOUND_DetectDevices;
impl->Deinitialize = DSOUND_Deinitialize;
*/
return 1; /* this audio target is available. */
}
AudioBootStrap PSPAUD_bootstrap = {
"psp", "PSP audio driver", PSPAUD_Init, 0
};
/* SDL_AUDI*/

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef _SDL_pspaudio_h
#define _SDL_pspaudio_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the video functions */
#define _THIS SDL_AudioDevice *this
#define NUM_BUFFERS 2
struct SDL_PrivateAudioData {
/* The hardware output channel. */
int channel;
/* The raw allocated mixing buffer. */
Uint8 *rawbuf;
/* Individual mixing buffers. */
Uint8 *mixbufs[NUM_BUFFERS];
/* Index of the next available mixing buffer. */
int next_buffer;
};
#endif /* _SDL_pspaudio_h */
/* vim: ts=4 sw=4
*/

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
The PulseAudio target for SDL 1.3 is based on the 1.3 arts target, with
the appropriate parts replaced with the 1.2 PulseAudio target code. This
was the cleanest way to move it to 1.3. The 1.2 target was written by
Stéphan Kochen: stephan .a.t. kochen.nl
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_PULSEAUDIO
/* Allow access to a raw mixing buffer */
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include <unistd.h>
#include <sys/types.h>
#include <errno.h>
#include <pulse/pulseaudio.h>
#include <pulse/simple.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_pulseaudio.h"
#include "SDL_loadso.h"
#if (PA_API_VERSION < 12)
/** Return non-zero if the passed state is one of the connected states */
static __inline__ int PA_CONTEXT_IS_GOOD(pa_context_state_t x) {
return
x == PA_CONTEXT_CONNECTING ||
x == PA_CONTEXT_AUTHORIZING ||
x == PA_CONTEXT_SETTING_NAME ||
x == PA_CONTEXT_READY;
}
/** Return non-zero if the passed state is one of the connected states */
static __inline__ int PA_STREAM_IS_GOOD(pa_stream_state_t x) {
return
x == PA_STREAM_CREATING ||
x == PA_STREAM_READY;
}
#endif /* pulseaudio <= 0.9.10 */
static const char *(*PULSEAUDIO_pa_get_library_version) (void);
static pa_simple *(*PULSEAUDIO_pa_simple_new) (const char *, const char *,
pa_stream_direction_t, const char *, const char *, const pa_sample_spec *,
const pa_channel_map *, const pa_buffer_attr *, int *);
static void (*PULSEAUDIO_pa_simple_free) (pa_simple *);
static pa_channel_map *(*PULSEAUDIO_pa_channel_map_init_auto) (
pa_channel_map *, unsigned, pa_channel_map_def_t);
static const char * (*PULSEAUDIO_pa_strerror) (int);
static pa_mainloop * (*PULSEAUDIO_pa_mainloop_new) (void);
static pa_mainloop_api * (*PULSEAUDIO_pa_mainloop_get_api) (pa_mainloop *);
static int (*PULSEAUDIO_pa_mainloop_iterate) (pa_mainloop *, int, int *);
static void (*PULSEAUDIO_pa_mainloop_free) (pa_mainloop *);
static pa_operation_state_t (*PULSEAUDIO_pa_operation_get_state) (
pa_operation *);
static void (*PULSEAUDIO_pa_operation_cancel) (pa_operation *);
static void (*PULSEAUDIO_pa_operation_unref) (pa_operation *);
static pa_context * (*PULSEAUDIO_pa_context_new) (pa_mainloop_api *,
const char *);
static int (*PULSEAUDIO_pa_context_connect) (pa_context *, const char *,
pa_context_flags_t, const pa_spawn_api *);
static pa_context_state_t (*PULSEAUDIO_pa_context_get_state) (pa_context *);
static void (*PULSEAUDIO_pa_context_disconnect) (pa_context *);
static void (*PULSEAUDIO_pa_context_unref) (pa_context *);
static pa_stream * (*PULSEAUDIO_pa_stream_new) (pa_context *, const char *,
const pa_sample_spec *, const pa_channel_map *);
static int (*PULSEAUDIO_pa_stream_connect_playback) (pa_stream *, const char *,
const pa_buffer_attr *, pa_stream_flags_t, pa_cvolume *, pa_stream *);
static pa_stream_state_t (*PULSEAUDIO_pa_stream_get_state) (pa_stream *);
static size_t (*PULSEAUDIO_pa_stream_writable_size) (pa_stream *);
static int (*PULSEAUDIO_pa_stream_write) (pa_stream *, const void *, size_t,
pa_free_cb_t, int64_t, pa_seek_mode_t);
static pa_operation * (*PULSEAUDIO_pa_stream_drain) (pa_stream *,
pa_stream_success_cb_t, void *);
static int (*PULSEAUDIO_pa_stream_disconnect) (pa_stream *);
static void (*PULSEAUDIO_pa_stream_unref) (pa_stream *);
static int load_pulseaudio_syms(void);
#ifdef SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC
static const char *pulseaudio_library = SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC;
static void *pulseaudio_handle = NULL;
static int
load_pulseaudio_sym(const char *fn, void **addr)
{
*addr = SDL_LoadFunction(pulseaudio_handle, fn);
if (*addr == NULL) {
/* Don't call SDL_SetError(): SDL_LoadFunction already did. */
return 0;
}
return 1;
}
/* cast funcs to char* first, to please GCC's strict aliasing rules. */
#define SDL_PULSEAUDIO_SYM(x) \
if (!load_pulseaudio_sym(#x, (void **) (char *) &PULSEAUDIO_##x)) return -1
static void
UnloadPulseAudioLibrary(void)
{
if (pulseaudio_handle != NULL) {
SDL_UnloadObject(pulseaudio_handle);
pulseaudio_handle = NULL;
}
}
static int
LoadPulseAudioLibrary(void)
{
int retval = 0;
if (pulseaudio_handle == NULL) {
pulseaudio_handle = SDL_LoadObject(pulseaudio_library);
if (pulseaudio_handle == NULL) {
retval = -1;
/* Don't call SDL_SetError(): SDL_LoadObject already did. */
} else {
retval = load_pulseaudio_syms();
if (retval < 0) {
UnloadPulseAudioLibrary();
}
}
}
return retval;
}
#else
#define SDL_PULSEAUDIO_SYM(x) PULSEAUDIO_##x = x
static void
UnloadPulseAudioLibrary(void)
{
}
static int
LoadPulseAudioLibrary(void)
{
load_pulseaudio_syms();
return 0;
}
#endif /* SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC */
static int
load_pulseaudio_syms(void)
{
SDL_PULSEAUDIO_SYM(pa_get_library_version);
SDL_PULSEAUDIO_SYM(pa_simple_new);
SDL_PULSEAUDIO_SYM(pa_simple_free);
SDL_PULSEAUDIO_SYM(pa_mainloop_new);
SDL_PULSEAUDIO_SYM(pa_mainloop_get_api);
SDL_PULSEAUDIO_SYM(pa_mainloop_iterate);
SDL_PULSEAUDIO_SYM(pa_mainloop_free);
SDL_PULSEAUDIO_SYM(pa_operation_get_state);
SDL_PULSEAUDIO_SYM(pa_operation_cancel);
SDL_PULSEAUDIO_SYM(pa_operation_unref);
SDL_PULSEAUDIO_SYM(pa_context_new);
SDL_PULSEAUDIO_SYM(pa_context_connect);
SDL_PULSEAUDIO_SYM(pa_context_get_state);
SDL_PULSEAUDIO_SYM(pa_context_disconnect);
SDL_PULSEAUDIO_SYM(pa_context_unref);
SDL_PULSEAUDIO_SYM(pa_stream_new);
SDL_PULSEAUDIO_SYM(pa_stream_connect_playback);
SDL_PULSEAUDIO_SYM(pa_stream_get_state);
SDL_PULSEAUDIO_SYM(pa_stream_writable_size);
SDL_PULSEAUDIO_SYM(pa_stream_write);
SDL_PULSEAUDIO_SYM(pa_stream_drain);
SDL_PULSEAUDIO_SYM(pa_stream_disconnect);
SDL_PULSEAUDIO_SYM(pa_stream_unref);
SDL_PULSEAUDIO_SYM(pa_channel_map_init_auto);
SDL_PULSEAUDIO_SYM(pa_strerror);
return 0;
}
/* Check to see if we can connect to PulseAudio */
static SDL_bool
CheckPulseAudioAvailable()
{
pa_simple *s;
pa_sample_spec ss;
ss.format = PA_SAMPLE_S16NE;
ss.channels = 1;
ss.rate = 22050;
s = PULSEAUDIO_pa_simple_new(NULL, "SDL", PA_STREAM_PLAYBACK, NULL,
"Test", &ss, NULL, NULL, NULL);
if (s) {
PULSEAUDIO_pa_simple_free(s);
return SDL_TRUE;
} else {
return SDL_FALSE;
}
}
/* This function waits until it is possible to write a full sound buffer */
static void
PULSEAUDIO_WaitDevice(_THIS)
{
struct SDL_PrivateAudioData *h = this->hidden;
while(1) {
if (PULSEAUDIO_pa_context_get_state(h->context) != PA_CONTEXT_READY ||
PULSEAUDIO_pa_stream_get_state(h->stream) != PA_STREAM_READY ||
PULSEAUDIO_pa_mainloop_iterate(h->mainloop, 1, NULL) < 0) {
this->enabled = 0;
return;
}
if (PULSEAUDIO_pa_stream_writable_size(h->stream) >= h->mixlen) {
return;
}
}
}
static void
PULSEAUDIO_PlayDevice(_THIS)
{
/* Write the audio data */
struct SDL_PrivateAudioData *h = this->hidden;
if (PULSEAUDIO_pa_stream_write(h->stream, h->mixbuf, h->mixlen, NULL, 0LL,
PA_SEEK_RELATIVE) < 0) {
this->enabled = 0;
}
}
static void
stream_drain_complete(pa_stream *s, int success, void *userdata)
{
/* no-op for pa_stream_drain() to use for callback. */
}
static void
PULSEAUDIO_WaitDone(_THIS)
{
struct SDL_PrivateAudioData *h = this->hidden;
pa_operation *o;
o = PULSEAUDIO_pa_stream_drain(h->stream, stream_drain_complete, NULL);
if (!o) {
return;
}
while (PULSEAUDIO_pa_operation_get_state(o) != PA_OPERATION_DONE) {
if (PULSEAUDIO_pa_context_get_state(h->context) != PA_CONTEXT_READY ||
PULSEAUDIO_pa_stream_get_state(h->stream) != PA_STREAM_READY ||
PULSEAUDIO_pa_mainloop_iterate(h->mainloop, 1, NULL) < 0) {
PULSEAUDIO_pa_operation_cancel(o);
break;
}
}
PULSEAUDIO_pa_operation_unref(o);
}
static Uint8 *
PULSEAUDIO_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static void
PULSEAUDIO_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->stream) {
PULSEAUDIO_pa_stream_disconnect(this->hidden->stream);
PULSEAUDIO_pa_stream_unref(this->hidden->stream);
this->hidden->stream = NULL;
}
if (this->hidden->context != NULL) {
PULSEAUDIO_pa_context_disconnect(this->hidden->context);
PULSEAUDIO_pa_context_unref(this->hidden->context);
this->hidden->context = NULL;
}
if (this->hidden->mainloop != NULL) {
PULSEAUDIO_pa_mainloop_free(this->hidden->mainloop);
this->hidden->mainloop = NULL;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static __inline__ int
squashVersion(const int major, const int minor, const int patch)
{
return ((major & 0xFF) << 16) | ((minor & 0xFF) << 8) | (patch & 0xFF);
}
/* Workaround for older pulse: pa_context_new() must have non-NULL appname */
static const char *
getAppName(void)
{
const char *verstr = PULSEAUDIO_pa_get_library_version();
if (verstr != NULL) {
int maj, min, patch;
if (SDL_sscanf(verstr, "%d.%d.%d", &maj, &min, &patch) == 3) {
if (squashVersion(maj, min, patch) >= squashVersion(0, 9, 15)) {
return NULL; /* 0.9.15+ handles NULL correctly. */
}
}
}
return "SDL Application"; /* oh well. */
}
static int
PULSEAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
{
struct SDL_PrivateAudioData *h = NULL;
Uint16 test_format = 0;
pa_sample_spec paspec;
pa_buffer_attr paattr;
pa_channel_map pacmap;
pa_stream_flags_t flags = 0;
int state = 0;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
h = this->hidden;
paspec.format = PA_SAMPLE_INVALID;
/* Try for a closest match on audio format */
for (test_format = SDL_FirstAudioFormat(this->spec.format);
(paspec.format == PA_SAMPLE_INVALID) && test_format;) {
#ifdef DEBUG_AUDIO
fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
#endif
switch (test_format) {
case AUDIO_U8:
paspec.format = PA_SAMPLE_U8;
break;
case AUDIO_S16LSB:
paspec.format = PA_SAMPLE_S16LE;
break;
case AUDIO_S16MSB:
paspec.format = PA_SAMPLE_S16BE;
break;
case AUDIO_S32LSB:
paspec.format = PA_SAMPLE_S32LE;
break;
case AUDIO_S32MSB:
paspec.format = PA_SAMPLE_S32BE;
break;
case AUDIO_F32LSB:
paspec.format = PA_SAMPLE_FLOAT32LE;
break;
case AUDIO_F32MSB:
paspec.format = PA_SAMPLE_FLOAT32BE;
break;
default:
paspec.format = PA_SAMPLE_INVALID;
break;
}
if (paspec.format == PA_SAMPLE_INVALID) {
test_format = SDL_NextAudioFormat();
}
}
if (paspec.format == PA_SAMPLE_INVALID) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
/* Calculate the final parameters for this audio specification */
#ifdef PA_STREAM_ADJUST_LATENCY
this->spec.samples /= 2; /* Mix in smaller chunck to avoid underruns */
#endif
SDL_CalculateAudioSpec(&this->spec);
/* Allocate mixing buffer */
h->mixlen = this->spec.size;
h->mixbuf = (Uint8 *) SDL_AllocAudioMem(h->mixlen);
if (h->mixbuf == NULL) {
PULSEAUDIO_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(h->mixbuf, this->spec.silence, this->spec.size);
paspec.channels = this->spec.channels;
paspec.rate = this->spec.freq;
/* Reduced prebuffering compared to the defaults. */
#ifdef PA_STREAM_ADJUST_LATENCY
/* 2x original requested bufsize */
paattr.tlength = h->mixlen * 4;
paattr.prebuf = -1;
paattr.maxlength = -1;
/* -1 can lead to pa_stream_writable_size() >= mixlen never being true */
paattr.minreq = h->mixlen;
flags = PA_STREAM_ADJUST_LATENCY;
#else
paattr.tlength = h->mixlen*2;
paattr.prebuf = h->mixlen*2;
paattr.maxlength = h->mixlen*2;
paattr.minreq = h->mixlen;
#endif
/* The SDL ALSA output hints us that we use Windows' channel mapping */
/* http://bugzilla.libsdl.org/show_bug.cgi?id=110 */
PULSEAUDIO_pa_channel_map_init_auto(&pacmap, this->spec.channels,
PA_CHANNEL_MAP_WAVEEX);
/* Set up a new main loop */
if (!(h->mainloop = PULSEAUDIO_pa_mainloop_new())) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("pa_mainloop_new() failed");
}
h->mainloop_api = PULSEAUDIO_pa_mainloop_get_api(h->mainloop);
h->context = PULSEAUDIO_pa_context_new(h->mainloop_api, getAppName());
if (!h->context) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("pa_context_new() failed");
}
/* Connect to the PulseAudio server */
if (PULSEAUDIO_pa_context_connect(h->context, NULL, 0, NULL) < 0) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("Could not setup connection to PulseAudio");
}
do {
if (PULSEAUDIO_pa_mainloop_iterate(h->mainloop, 1, NULL) < 0) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("pa_mainloop_iterate() failed");
}
state = PULSEAUDIO_pa_context_get_state(h->context);
if (!PA_CONTEXT_IS_GOOD(state)) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("Could not connect to PulseAudio");
}
} while (state != PA_CONTEXT_READY);
h->stream = PULSEAUDIO_pa_stream_new(
h->context,
"Simple DirectMedia Layer", /* stream description */
&paspec, /* sample format spec */
&pacmap /* channel map */
);
if (h->stream == NULL) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("Could not set up PulseAudio stream");
}
if (PULSEAUDIO_pa_stream_connect_playback(h->stream, NULL, &paattr, flags,
NULL, NULL) < 0) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("Could not connect PulseAudio stream");
}
do {
if (PULSEAUDIO_pa_mainloop_iterate(h->mainloop, 1, NULL) < 0) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("pa_mainloop_iterate() failed");
}
state = PULSEAUDIO_pa_stream_get_state(h->stream);
if (!PA_STREAM_IS_GOOD(state)) {
PULSEAUDIO_CloseDevice(this);
return SDL_SetError("Could not create to PulseAudio stream");
}
} while (state != PA_STREAM_READY);
/* We're ready to rock and roll. :-) */
return 0;
}
static void
PULSEAUDIO_Deinitialize(void)
{
UnloadPulseAudioLibrary();
}
static int
PULSEAUDIO_Init(SDL_AudioDriverImpl * impl)
{
if (LoadPulseAudioLibrary() < 0) {
return 0;
}
if (!CheckPulseAudioAvailable()) {
UnloadPulseAudioLibrary();
return 0;
}
/* Set the function pointers */
impl->OpenDevice = PULSEAUDIO_OpenDevice;
impl->PlayDevice = PULSEAUDIO_PlayDevice;
impl->WaitDevice = PULSEAUDIO_WaitDevice;
impl->GetDeviceBuf = PULSEAUDIO_GetDeviceBuf;
impl->CloseDevice = PULSEAUDIO_CloseDevice;
impl->WaitDone = PULSEAUDIO_WaitDone;
impl->Deinitialize = PULSEAUDIO_Deinitialize;
impl->OnlyHasDefaultOutputDevice = 1;
return 1; /* this audio target is available. */
}
AudioBootStrap PULSEAUDIO_bootstrap = {
"pulseaudio", "PulseAudio", PULSEAUDIO_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_PULSEAUDIO */
/* vi: set ts=4 sw=4 expandtab: */

48
src/audio/pulseaudio/SDL_pulseaudio.h Normal file
View File

@@ -0,0 +1,48 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_pulseaudio_h
#define _SDL_pulseaudio_h
#include <pulse/simple.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* pulseaudio structures */
pa_mainloop *mainloop;
pa_mainloop_api *mainloop_api;
pa_context *context;
pa_stream *stream;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
};
#endif /* _SDL_pulseaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

859
src/audio/qsa/SDL_qsa_audio.c Normal file
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@@ -0,0 +1,859 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_QSA
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sched.h>
#include <sys/select.h>
#include <sys/neutrino.h>
#include <sys/asoundlib.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_qsa_audio.h"
/* default channel communication parameters */
#define DEFAULT_CPARAMS_RATE 44100
#define DEFAULT_CPARAMS_VOICES 1
#define DEFAULT_CPARAMS_FRAG_SIZE 4096
#define DEFAULT_CPARAMS_FRAGS_MIN 1
#define DEFAULT_CPARAMS_FRAGS_MAX 1
#define QSA_NO_WORKAROUNDS 0x00000000
#define QSA_MMAP_WORKAROUND 0x00000001
struct BuggyCards
{
char *cardname;
unsigned long bugtype;
};
#define QSA_WA_CARDS 3
#define QSA_MAX_CARD_NAME_LENGTH 33
struct BuggyCards buggycards[QSA_WA_CARDS] = {
{"Sound Blaster Live!", QSA_MMAP_WORKAROUND},
{"Vortex 8820", QSA_MMAP_WORKAROUND},
{"Vortex 8830", QSA_MMAP_WORKAROUND},
};
/* List of found devices */
#define QSA_MAX_DEVICES 32
#define QSA_MAX_NAME_LENGTH 81+16 /* Hardcoded in QSA, can't be changed */
typedef struct _QSA_Device
{
char name[QSA_MAX_NAME_LENGTH]; /* Long audio device name for SDL */
int cardno;
int deviceno;
} QSA_Device;
QSA_Device qsa_playback_device[QSA_MAX_DEVICES];
uint32_t qsa_playback_devices;
QSA_Device qsa_capture_device[QSA_MAX_DEVICES];
uint32_t qsa_capture_devices;
static inline int
QSA_SetError(const char *fn, int status)
{
return SDL_SetError("QSA: %s() failed: %s", fn, snd_strerror(status));
}
/* card names check to apply the workarounds */
static int
QSA_CheckBuggyCards(_THIS, unsigned long checkfor)
{
char scardname[QSA_MAX_CARD_NAME_LENGTH];
int it;
if (snd_card_get_name
(this->hidden->cardno, scardname, QSA_MAX_CARD_NAME_LENGTH - 1) < 0) {
return 0;
}
for (it = 0; it < QSA_WA_CARDS; it++) {
if (SDL_strcmp(buggycards[it].cardname, scardname) == 0) {
if (buggycards[it].bugtype == checkfor) {
return 1;
}
}
}
return 0;
}
/* !!! FIXME: does this need to be here? Does the SDL version not work? */
static void
QSA_ThreadInit(_THIS)
{
struct sched_param param;
int status;
/* Increase default 10 priority to 25 to avoid jerky sound */
status = SchedGet(0, 0, &param);
param.sched_priority = param.sched_curpriority + 15;
status = SchedSet(0, 0, SCHED_NOCHANGE, &param);
}
/* PCM channel parameters initialize function */
static void
QSA_InitAudioParams(snd_pcm_channel_params_t * cpars)
{
SDL_memset(cpars, 0, sizeof(snd_pcm_channel_params_t));
cpars->channel = SND_PCM_CHANNEL_PLAYBACK;
cpars->mode = SND_PCM_MODE_BLOCK;
cpars->start_mode = SND_PCM_START_DATA;
cpars->stop_mode = SND_PCM_STOP_STOP;
cpars->format.format = SND_PCM_SFMT_S16_LE;
cpars->format.interleave = 1;
cpars->format.rate = DEFAULT_CPARAMS_RATE;
cpars->format.voices = DEFAULT_CPARAMS_VOICES;
cpars->buf.block.frag_size = DEFAULT_CPARAMS_FRAG_SIZE;
cpars->buf.block.frags_min = DEFAULT_CPARAMS_FRAGS_MIN;
cpars->buf.block.frags_max = DEFAULT_CPARAMS_FRAGS_MAX;
}
/* This function waits until it is possible to write a full sound buffer */
static void
QSA_WaitDevice(_THIS)
{
fd_set wfds;
fd_set rfds;
int selectret;
struct timeval timeout;
if (!this->hidden->iscapture) {
FD_ZERO(&wfds);
FD_SET(this->hidden->audio_fd, &wfds);
} else {
FD_ZERO(&rfds);
FD_SET(this->hidden->audio_fd, &rfds);
}
do {
/* Setup timeout for playing one fragment equal to 2 seconds */
/* If timeout occured than something wrong with hardware or driver */
/* For example, Vortex 8820 audio driver stucks on second DAC because */
/* it doesn't exist ! */
timeout.tv_sec = 2;
timeout.tv_usec = 0;
this->hidden->timeout_on_wait = 0;
if (!this->hidden->iscapture) {
selectret =
select(this->hidden->audio_fd + 1, NULL, &wfds, NULL,
&timeout);
} else {
selectret =
select(this->hidden->audio_fd + 1, &rfds, NULL, NULL,
&timeout);
}
switch (selectret) {
case -1:
{
SDL_SetError("QSA: select() failed: %s", strerror(errno));
return;
}
break;
case 0:
{
SDL_SetError("QSA: timeout on buffer waiting occured");
this->hidden->timeout_on_wait = 1;
return;
}
break;
default:
{
if (!this->hidden->iscapture) {
if (FD_ISSET(this->hidden->audio_fd, &wfds)) {
return;
}
} else {
if (FD_ISSET(this->hidden->audio_fd, &rfds)) {
return;
}
}
}
break;
}
} while (1);
}
static void
QSA_PlayDevice(_THIS)
{
snd_pcm_channel_status_t cstatus;
int written;
int status;
int towrite;
void *pcmbuffer;
if ((!this->enabled) || (!this->hidden)) {
return;
}
towrite = this->spec.size;
pcmbuffer = this->hidden->pcm_buf;
/* Write the audio data, checking for EAGAIN (buffer full) and underrun */
do {
written =
snd_pcm_plugin_write(this->hidden->audio_handle, pcmbuffer,
towrite);
if (written != towrite) {
/* Check if samples playback got stuck somewhere in hardware or in */
/* the audio device driver */
if ((errno == EAGAIN) && (written == 0)) {
if (this->hidden->timeout_on_wait != 0) {
SDL_SetError("QSA: buffer playback timeout");
return;
}
}
/* Check for errors or conditions */
if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
/* Let a little CPU time go by and try to write again */
SDL_Delay(1);
/* if we wrote some data */
towrite -= written;
pcmbuffer += written * this->spec.channels;
continue;
} else {
if ((errno == EINVAL) || (errno == EIO)) {
SDL_memset(&cstatus, 0, sizeof(cstatus));
if (!this->hidden->iscapture) {
cstatus.channel = SND_PCM_CHANNEL_PLAYBACK;
} else {
cstatus.channel = SND_PCM_CHANNEL_CAPTURE;
}
status =
snd_pcm_plugin_status(this->hidden->audio_handle,
&cstatus);
if (status < 0) {
QSA_SetError("snd_pcm_plugin_status", status);
return;
}
if ((cstatus.status == SND_PCM_STATUS_UNDERRUN) ||
(cstatus.status == SND_PCM_STATUS_READY)) {
if (!this->hidden->iscapture) {
status =
snd_pcm_plugin_prepare(this->hidden->
audio_handle,
SND_PCM_CHANNEL_PLAYBACK);
} else {
status =
snd_pcm_plugin_prepare(this->hidden->
audio_handle,
SND_PCM_CHANNEL_CAPTURE);
}
if (status < 0) {
QSA_SetError("snd_pcm_plugin_prepare", status);
return;
}
}
continue;
} else {
return;
}
}
} else {
/* we wrote all remaining data */
towrite -= written;
pcmbuffer += written * this->spec.channels;
}
} while ((towrite > 0) && (this->enabled));
/* If we couldn't write, assume fatal error for now */
if (towrite != 0) {
this->enabled = 0;
}
}
static Uint8 *
QSA_GetDeviceBuf(_THIS)
{
return this->hidden->pcm_buf;
}
static void
QSA_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->audio_handle != NULL) {
if (!this->hidden->iscapture) {
/* Finish playing available samples */
snd_pcm_plugin_flush(this->hidden->audio_handle,
SND_PCM_CHANNEL_PLAYBACK);
} else {
/* Cancel unread samples during capture */
snd_pcm_plugin_flush(this->hidden->audio_handle,
SND_PCM_CHANNEL_CAPTURE);
}
snd_pcm_close(this->hidden->audio_handle);
this->hidden->audio_handle = NULL;
}
if (this->hidden->pcm_buf != NULL) {
SDL_FreeAudioMem(this->hidden->pcm_buf);
this->hidden->pcm_buf = NULL;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
QSA_OpenDevice(_THIS, const char *devname, int iscapture)
{
int status = 0;
int format = 0;
SDL_AudioFormat test_format = 0;
int found = 0;
snd_pcm_channel_setup_t csetup;
snd_pcm_channel_params_t cparams;
/* Initialize all variables that we clean on shutdown */
this->hidden =
(struct SDL_PrivateAudioData *) SDL_calloc(1,
(sizeof
(struct
SDL_PrivateAudioData)));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, sizeof(struct SDL_PrivateAudioData));
/* Initialize channel transfer parameters to default */
QSA_InitAudioParams(&cparams);
/* Initialize channel direction: capture or playback */
this->hidden->iscapture = iscapture;
/* Find deviceid and cardid by device name for playback */
if ((!this->hidden->iscapture) && (devname != NULL)) {
uint32_t device;
int32_t status;
/* Search in the playback devices */
device = 0;
do {
status = SDL_strcmp(qsa_playback_device[device].name, devname);
if (status == 0) {
/* Found requested device */
this->hidden->deviceno = qsa_playback_device[device].deviceno;
this->hidden->cardno = qsa_playback_device[device].cardno;
break;
}
device++;
if (device >= qsa_playback_devices) {
QSA_CloseDevice(this);
return SDL_SetError("No such playback device");
}
} while (1);
}
/* Find deviceid and cardid by device name for capture */
if ((this->hidden->iscapture) && (devname != NULL)) {
/* Search in the capture devices */
uint32_t device;
int32_t status;
/* Searching in the playback devices */
device = 0;
do {
status = SDL_strcmp(qsa_capture_device[device].name, devname);
if (status == 0) {
/* Found requested device */
this->hidden->deviceno = qsa_capture_device[device].deviceno;
this->hidden->cardno = qsa_capture_device[device].cardno;
break;
}
device++;
if (device >= qsa_capture_devices) {
QSA_CloseDevice(this);
return SDL_SetError("No such capture device");
}
} while (1);
}
/* Check if SDL requested default audio device */
if (devname == NULL) {
/* Open system default audio device */
if (!this->hidden->iscapture) {
status = snd_pcm_open_preferred(&this->hidden->audio_handle,
&this->hidden->cardno,
&this->hidden->deviceno,
SND_PCM_OPEN_PLAYBACK);
} else {
status = snd_pcm_open_preferred(&this->hidden->audio_handle,
&this->hidden->cardno,
&this->hidden->deviceno,
SND_PCM_OPEN_CAPTURE);
}
} else {
/* Open requested audio device */
if (!this->hidden->iscapture) {
status =
snd_pcm_open(&this->hidden->audio_handle,
this->hidden->cardno, this->hidden->deviceno,
SND_PCM_OPEN_PLAYBACK);
} else {
status =
snd_pcm_open(&this->hidden->audio_handle,
this->hidden->cardno, this->hidden->deviceno,
SND_PCM_OPEN_CAPTURE);
}
}
/* Check if requested device is opened */
if (status < 0) {
this->hidden->audio_handle = NULL;
QSA_CloseDevice(this);
return QSA_SetError("snd_pcm_open", status);
}
if (!QSA_CheckBuggyCards(this, QSA_MMAP_WORKAROUND)) {
/* Disable QSA MMAP plugin for buggy audio drivers */
status =
snd_pcm_plugin_set_disable(this->hidden->audio_handle,
PLUGIN_DISABLE_MMAP);
if (status < 0) {
QSA_CloseDevice(this);
return QSA_SetError("snd_pcm_plugin_set_disable", status);
}
}
/* Try for a closest match on audio format */
format = 0;
/* can't use format as SND_PCM_SFMT_U8 = 0 in qsa */
found = 0;
for (test_format = SDL_FirstAudioFormat(this->spec.format); !found;) {
/* if match found set format to equivalent QSA format */
switch (test_format) {
case AUDIO_U8:
{
format = SND_PCM_SFMT_U8;
found = 1;
}
break;
case AUDIO_S8:
{
format = SND_PCM_SFMT_S8;
found = 1;
}
break;
case AUDIO_S16LSB:
{
format = SND_PCM_SFMT_S16_LE;
found = 1;
}
break;
case AUDIO_S16MSB:
{
format = SND_PCM_SFMT_S16_BE;
found = 1;
}
break;
case AUDIO_U16LSB:
{
format = SND_PCM_SFMT_U16_LE;
found = 1;
}
break;
case AUDIO_U16MSB:
{
format = SND_PCM_SFMT_U16_BE;
found = 1;
}
break;
case AUDIO_S32LSB:
{
format = SND_PCM_SFMT_S32_LE;
found = 1;
}
break;
case AUDIO_S32MSB:
{
format = SND_PCM_SFMT_S32_BE;
found = 1;
}
break;
case AUDIO_F32LSB:
{
format = SND_PCM_SFMT_FLOAT_LE;
found = 1;
}
break;
case AUDIO_F32MSB:
{
format = SND_PCM_SFMT_FLOAT_BE;
found = 1;
}
break;
default:
{
break;
}
}
if (!found) {
test_format = SDL_NextAudioFormat();
}
}
/* assumes test_format not 0 on success */
if (test_format == 0) {
QSA_CloseDevice(this);
return SDL_SetError("QSA: Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
/* Set the audio format */
cparams.format.format = format;
/* Set mono/stereo/4ch/6ch/8ch audio */
cparams.format.voices = this->spec.channels;
/* Set rate */
cparams.format.rate = this->spec.freq;
/* Setup the transfer parameters according to cparams */
status = snd_pcm_plugin_params(this->hidden->audio_handle, &cparams);
if (status < 0) {
QSA_CloseDevice(this);
return QSA_SetError("snd_pcm_channel_params", status);
}
/* Make sure channel is setup right one last time */
SDL_memset(&csetup, 0, sizeof(csetup));
if (!this->hidden->iscapture) {
csetup.channel = SND_PCM_CHANNEL_PLAYBACK;
} else {
csetup.channel = SND_PCM_CHANNEL_CAPTURE;
}
/* Setup an audio channel */
if (snd_pcm_plugin_setup(this->hidden->audio_handle, &csetup) < 0) {
QSA_CloseDevice(this);
return SDL_SetError("QSA: Unable to setup channel");
}
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
this->hidden->pcm_len = this->spec.size;
if (this->hidden->pcm_len == 0) {
this->hidden->pcm_len =
csetup.buf.block.frag_size * this->spec.channels *
(snd_pcm_format_width(format) / 8);
}
/*
* Allocate memory to the audio buffer and initialize with silence
* (Note that buffer size must be a multiple of fragment size, so find
* closest multiple)
*/
this->hidden->pcm_buf =
(Uint8 *) SDL_AllocAudioMem(this->hidden->pcm_len);
if (this->hidden->pcm_buf == NULL) {
QSA_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->pcm_buf, this->spec.silence,
this->hidden->pcm_len);
/* get the file descriptor */
if (!this->hidden->iscapture) {
this->hidden->audio_fd =
snd_pcm_file_descriptor(this->hidden->audio_handle,
SND_PCM_CHANNEL_PLAYBACK);
} else {
this->hidden->audio_fd =
snd_pcm_file_descriptor(this->hidden->audio_handle,
SND_PCM_CHANNEL_CAPTURE);
}
if (this->hidden->audio_fd < 0) {
QSA_CloseDevice(this);
return QSA_SetError("snd_pcm_file_descriptor", status);
}
/* Prepare an audio channel */
if (!this->hidden->iscapture) {
/* Prepare audio playback */
status =
snd_pcm_plugin_prepare(this->hidden->audio_handle,
SND_PCM_CHANNEL_PLAYBACK);
} else {
/* Prepare audio capture */
status =
snd_pcm_plugin_prepare(this->hidden->audio_handle,
SND_PCM_CHANNEL_CAPTURE);
}
if (status < 0) {
QSA_CloseDevice(this);
return QSA_SetError("snd_pcm_plugin_prepare", status);
}
/* We're really ready to rock and roll. :-) */
return 0;
}
static void
QSA_DetectDevices(int iscapture, SDL_AddAudioDevice addfn)
{
uint32_t it;
uint32_t cards;
uint32_t devices;
int32_t status;
/* Detect amount of available devices */
/* this value can be changed in the runtime */
cards = snd_cards();
/* If io-audio manager is not running we will get 0 as number */
/* of available audio devices */
if (cards == 0) {
/* We have no any available audio devices */
return;
}
/* Find requested devices by type */
if (!iscapture) {
/* Playback devices enumeration requested */
for (it = 0; it < cards; it++) {
devices = 0;
do {
status =
snd_card_get_longname(it,
qsa_playback_device
[qsa_playback_devices].name,
QSA_MAX_NAME_LENGTH);
if (status == EOK) {
snd_pcm_t *handle;
/* Add device number to device name */
sprintf(qsa_playback_device[qsa_playback_devices].name +
SDL_strlen(qsa_playback_device
[qsa_playback_devices].name), " d%d",
devices);
/* Store associated card number id */
qsa_playback_device[qsa_playback_devices].cardno = it;
/* Check if this device id could play anything */
status =
snd_pcm_open(&handle, it, devices,
SND_PCM_OPEN_PLAYBACK);
if (status == EOK) {
qsa_playback_device[qsa_playback_devices].deviceno =
devices;
status = snd_pcm_close(handle);
if (status == EOK) {
addfn(qsa_playback_device[qsa_playback_devices].name);
qsa_playback_devices++;
}
} else {
/* Check if we got end of devices list */
if (status == -ENOENT) {
break;
}
}
} else {
break;
}
/* Check if we reached maximum devices count */
if (qsa_playback_devices >= QSA_MAX_DEVICES) {
break;
}
devices++;
} while (1);
/* Check if we reached maximum devices count */
if (qsa_playback_devices >= QSA_MAX_DEVICES) {
break;
}
}
} else {
/* Capture devices enumeration requested */
for (it = 0; it < cards; it++) {
devices = 0;
do {
status =
snd_card_get_longname(it,
qsa_capture_device
[qsa_capture_devices].name,
QSA_MAX_NAME_LENGTH);
if (status == EOK) {
snd_pcm_t *handle;
/* Add device number to device name */
sprintf(qsa_capture_device[qsa_capture_devices].name +
SDL_strlen(qsa_capture_device
[qsa_capture_devices].name), " d%d",
devices);
/* Store associated card number id */
qsa_capture_device[qsa_capture_devices].cardno = it;
/* Check if this device id could play anything */
status =
snd_pcm_open(&handle, it, devices,
SND_PCM_OPEN_CAPTURE);
if (status == EOK) {
qsa_capture_device[qsa_capture_devices].deviceno =
devices;
status = snd_pcm_close(handle);
if (status == EOK) {
addfn(qsa_capture_device[qsa_capture_devices].name);
qsa_capture_devices++;
}
} else {
/* Check if we got end of devices list */
if (status == -ENOENT) {
break;
}
}
/* Check if we reached maximum devices count */
if (qsa_capture_devices >= QSA_MAX_DEVICES) {
break;
}
} else {
break;
}
devices++;
} while (1);
/* Check if we reached maximum devices count */
if (qsa_capture_devices >= QSA_MAX_DEVICES) {
break;
}
}
}
}
static void
QSA_WaitDone(_THIS)
{
if (!this->hidden->iscapture) {
if (this->hidden->audio_handle != NULL) {
/* Wait till last fragment is played and stop channel */
snd_pcm_plugin_flush(this->hidden->audio_handle,
SND_PCM_CHANNEL_PLAYBACK);
}
} else {
if (this->hidden->audio_handle != NULL) {
/* Discard all unread data and stop channel */
snd_pcm_plugin_flush(this->hidden->audio_handle,
SND_PCM_CHANNEL_CAPTURE);
}
}
}
static void
QSA_Deinitialize(void)
{
/* Clear devices array on shutdown */
SDL_memset(qsa_playback_device, 0x00,
sizeof(QSA_Device) * QSA_MAX_DEVICES);
SDL_memset(qsa_capture_device, 0x00,
sizeof(QSA_Device) * QSA_MAX_DEVICES);
qsa_playback_devices = 0;
qsa_capture_devices = 0;
}
static int
QSA_Init(SDL_AudioDriverImpl * impl)
{
snd_pcm_t *handle = NULL;
int32_t status = 0;
/* Clear devices array */
SDL_memset(qsa_playback_device, 0x00,
sizeof(QSA_Device) * QSA_MAX_DEVICES);
SDL_memset(qsa_capture_device, 0x00,
sizeof(QSA_Device) * QSA_MAX_DEVICES);
qsa_playback_devices = 0;
qsa_capture_devices = 0;
/* Set function pointers */
/* DeviceLock and DeviceUnlock functions are used default, */
/* provided by SDL, which uses pthread_mutex for lock/unlock */
impl->DetectDevices = QSA_DetectDevices;
impl->OpenDevice = QSA_OpenDevice;
impl->ThreadInit = QSA_ThreadInit;
impl->WaitDevice = QSA_WaitDevice;
impl->PlayDevice = QSA_PlayDevice;
impl->GetDeviceBuf = QSA_GetDeviceBuf;
impl->CloseDevice = QSA_CloseDevice;
impl->WaitDone = QSA_WaitDone;
impl->Deinitialize = QSA_Deinitialize;
impl->LockDevice = NULL;
impl->UnlockDevice = NULL;
impl->OnlyHasDefaultOutputDevice = 0;
impl->ProvidesOwnCallbackThread = 0;
impl->SkipMixerLock = 0;
impl->HasCaptureSupport = 1;
impl->OnlyHasDefaultOutputDevice = 0;
impl->OnlyHasDefaultInputDevice = 0;
/* Check if io-audio manager is running or not */
status = snd_cards();
if (status == 0) {
/* if no, return immediately */
return 1;
}
return 1; /* this audio target is available. */
}
AudioBootStrap QSAAUDIO_bootstrap = {
"qsa", "QNX QSA Audio", QSA_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_QSA */
/* vi: set ts=4 sw=4 expandtab: */

57
src/audio/qsa/SDL_qsa_audio.h Normal file
View File

@@ -0,0 +1,57 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef __SDL_QSA_AUDIO_H__
#define __SDL_QSA_AUDIO_H__
#include <sys/asoundlib.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice* this
struct SDL_PrivateAudioData
{
/* SDL capture state */
int iscapture;
/* The audio device handle */
int cardno;
int deviceno;
snd_pcm_t *audio_handle;
/* The audio file descriptor */
int audio_fd;
/* Select timeout status */
uint32_t timeout_on_wait;
/* Raw mixing buffer */
Uint8 *pcm_buf;
Uint32 pcm_len;
};
#endif /* __SDL_QSA_AUDIO_H__ */
/* vi: set ts=4 sw=4 expandtab: */

760
src/audio/sdlgenaudiocvt.pl Executable file
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@@ -0,0 +1,760 @@
#!/usr/bin/perl -w
use warnings;
use strict;
my @audiotypes = qw(
U8
S8
U16LSB
S16LSB
U16MSB
S16MSB
S32LSB
S32MSB
F32LSB
F32MSB
);
my @channels = ( 1, 2, 4, 6, 8 );
my %funcs;
my $custom_converters = 0;
sub getTypeConvertHashId {
my ($from, $to) = @_;
return "TYPECONVERTER $from/$to";
}
sub getResamplerHashId {
my ($from, $channels, $upsample, $multiple) = @_;
return "RESAMPLER $from/$channels/$upsample/$multiple";
}
sub outputHeader {
print <<EOF;
/* DO NOT EDIT! This file is generated by sdlgenaudiocvt.pl */
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken\@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "SDL_audio.h"
#include "SDL_audio_c.h"
#ifndef DEBUG_CONVERT
#define DEBUG_CONVERT 0
#endif
/* If you can guarantee your data and need space, you can eliminate code... */
/* Just build the arbitrary resamplers if you're saving code space. */
#ifndef LESS_RESAMPLERS
#define LESS_RESAMPLERS 0
#endif
/* Don't build any resamplers if you're REALLY saving code space. */
#ifndef NO_RESAMPLERS
#define NO_RESAMPLERS 0
#endif
/* Don't build any type converters if you're saving code space. */
#ifndef NO_CONVERTERS
#define NO_CONVERTERS 0
#endif
/* *INDENT-OFF* */
EOF
my @vals = ( 127, 32767, 2147483647 );
foreach (@vals) {
my $val = $_;
my $fval = 1.0 / $val;
print("#define DIVBY${val} ${fval}f\n");
}
print("\n");
}
sub outputFooter {
print <<EOF;
/* $custom_converters converters generated. */
/* *INDENT-ON* */
/* vi: set ts=4 sw=4 expandtab: */
EOF
}
sub splittype {
my $t = shift;
my ($signed, $size, $endian) = $t =~ /([USF])(\d+)([LM]SB|)/;
my $float = ($signed eq 'F') ? 1 : 0;
$signed = (($float) or ($signed eq 'S')) ? 1 : 0;
$endian = 'NONE' if ($endian eq '');
my $ctype = '';
if ($float) {
$ctype = (($size == 32) ? 'float' : 'double');
} else {
$ctype = (($signed) ? 'S' : 'U') . "int${size}";
}
return ($signed, $float, $size, $endian, $ctype);
}
sub getSwapFunc {
my ($size, $signed, $float, $endian, $val) = @_;
my $BEorLE = (($endian eq 'MSB') ? 'BE' : 'LE');
my $code = '';
if ($float) {
$code = "SDL_SwapFloat${BEorLE}($val)";
} else {
if ($size > 8) {
$code = "SDL_Swap${BEorLE}${size}($val)";
} else {
$code = $val;
}
if (($signed) and (!$float)) {
$code = "((Sint${size}) $code)";
}
}
return "${code}";
}
sub maxIntVal {
my $size = shift;
if ($size == 8) {
return 0x7F;
} elsif ($size == 16) {
return 0x7FFF;
} elsif ($size == 32) {
return 0x7FFFFFFF;
}
die("bug in script.\n");
}
sub getFloatToIntMult {
my $size = shift;
my $val = maxIntVal($size) . '.0';
$val .= 'f' if ($size < 32);
return $val;
}
sub getIntToFloatDivBy {
my $size = shift;
return 'DIVBY' . maxIntVal($size);
}
sub getSignFlipVal {
my $size = shift;
if ($size == 8) {
return '0x80';
} elsif ($size == 16) {
return '0x8000';
} elsif ($size == 32) {
return '0x80000000';
}
die("bug in script.\n");
}
sub buildCvtFunc {
my ($from, $to) = @_;
my ($fsigned, $ffloat, $fsize, $fendian, $fctype) = splittype($from);
my ($tsigned, $tfloat, $tsize, $tendian, $tctype) = splittype($to);
my $diffs = 0;
$diffs++ if ($fsize != $tsize);
$diffs++ if ($fsigned != $tsigned);
$diffs++ if ($ffloat != $tfloat);
$diffs++ if ($fendian ne $tendian);
return if ($diffs == 0);
my $hashid = getTypeConvertHashId($from, $to);
if (1) { # !!! FIXME: if ($diffs > 1) {
my $sym = "SDL_Convert_${from}_to_${to}";
$funcs{$hashid} = $sym;
$custom_converters++;
# Always unsigned for ints, for possible byteswaps.
my $srctype = (($ffloat) ? 'float' : "Uint${fsize}");
print <<EOF;
static void SDLCALL
${sym}(SDL_AudioCVT * cvt, SDL_AudioFormat format)
{
int i;
const $srctype *src;
$tctype *dst;
#if DEBUG_CONVERT
fprintf(stderr, "Converting AUDIO_${from} to AUDIO_${to}.\\n");
#endif
EOF
if ($fsize < $tsize) {
my $mult = $tsize / $fsize;
print <<EOF;
src = ((const $srctype *) (cvt->buf + cvt->len_cvt)) - 1;
dst = (($tctype *) (cvt->buf + cvt->len_cvt * $mult)) - 1;
for (i = cvt->len_cvt / sizeof ($srctype); i; --i, --src, --dst) {
EOF
} else {
print <<EOF;
src = (const $srctype *) cvt->buf;
dst = ($tctype *) cvt->buf;
for (i = cvt->len_cvt / sizeof ($srctype); i; --i, ++src, ++dst) {
EOF
}
# Have to convert to/from float/int.
# !!! FIXME: cast through double for int32<->float?
my $code = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, '*src');
if ($ffloat != $tfloat) {
if ($ffloat) {
my $mult = getFloatToIntMult($tsize);
if (!$tsigned) { # bump from -1.0f/1.0f to 0.0f/2.0f
$code = "($code + 1.0f)";
}
$code = "(($tctype) ($code * $mult))";
} else {
# $divby will be the reciprocal, to avoid pipeline stalls
# from floating point division...so multiply it.
my $divby = getIntToFloatDivBy($fsize);
$code = "(((float) $code) * $divby)";
if (!$fsigned) { # bump from 0.0f/2.0f to -1.0f/1.0f.
$code = "($code - 1.0f)";
}
}
} else {
# All integer conversions here.
if ($fsigned != $tsigned) {
my $signflipval = getSignFlipVal($fsize);
$code = "(($code) ^ $signflipval)";
}
my $shiftval = abs($fsize - $tsize);
if ($fsize < $tsize) {
$code = "((($tctype) $code) << $shiftval)";
} elsif ($fsize > $tsize) {
$code = "(($tctype) ($code >> $shiftval))";
}
}
my $swap = getSwapFunc($tsize, $tsigned, $tfloat, $tendian, 'val');
print <<EOF;
const $tctype val = $code;
*dst = ${swap};
}
EOF
if ($fsize > $tsize) {
my $divby = $fsize / $tsize;
print(" cvt->len_cvt /= $divby;\n");
} elsif ($fsize < $tsize) {
my $mult = $tsize / $fsize;
print(" cvt->len_cvt *= $mult;\n");
}
print <<EOF;
if (cvt->filters[++cvt->filter_index]) {
cvt->filters[cvt->filter_index] (cvt, AUDIO_$to);
}
}
EOF
} else {
if ($fsigned != $tsigned) {
$funcs{$hashid} = 'SDL_ConvertSigned';
} elsif ($ffloat != $tfloat) {
$funcs{$hashid} = 'SDL_ConvertFloat';
} elsif ($fsize != $tsize) {
$funcs{$hashid} = 'SDL_ConvertSize';
} elsif ($fendian ne $tendian) {
$funcs{$hashid} = 'SDL_ConvertEndian';
} else {
die("error in script.\n");
}
}
}
sub buildTypeConverters {
print "#if !NO_CONVERTERS\n\n";
foreach (@audiotypes) {
my $from = $_;
foreach (@audiotypes) {
my $to = $_;
buildCvtFunc($from, $to);
}
}
print "#endif /* !NO_CONVERTERS */\n\n\n";
print "const SDL_AudioTypeFilters sdl_audio_type_filters[] =\n{\n";
print "#if !NO_CONVERTERS\n";
foreach (@audiotypes) {
my $from = $_;
foreach (@audiotypes) {
my $to = $_;
if ($from ne $to) {
my $hashid = getTypeConvertHashId($from, $to);
my $sym = $funcs{$hashid};
print(" { AUDIO_$from, AUDIO_$to, $sym },\n");
}
}
}
print "#endif /* !NO_CONVERTERS */\n";
print(" { 0, 0, NULL }\n");
print "};\n\n\n";
}
sub getBiggerCtype {
my ($isfloat, $size) = @_;
if ($isfloat) {
if ($size == 32) {
return 'double';
}
die("bug in script.\n");
}
if ($size == 8) {
return 'Sint16';
} elsif ($size == 16) {
return 'Sint32'
} elsif ($size == 32) {
return 'Sint64'
}
die("bug in script.\n");
}
# These handle arbitrary resamples...44100Hz to 48000Hz, for example.
# Man, this code is skanky.
sub buildArbitraryResampleFunc {
# !!! FIXME: we do a lot of unnecessary and ugly casting in here, due to getSwapFunc().
my ($from, $channels, $upsample) = @_;
my ($fsigned, $ffloat, $fsize, $fendian, $fctype) = splittype($from);
my $bigger = getBiggerCtype($ffloat, $fsize);
my $interp = ($ffloat) ? '* 0.5' : '>> 1';
my $resample = ($upsample) ? 'Upsample' : 'Downsample';
my $hashid = getResamplerHashId($from, $channels, $upsample, 0);
my $sym = "SDL_${resample}_${from}_${channels}c";
$funcs{$hashid} = $sym;
$custom_converters++;
my $fudge = $fsize * $channels * 2; # !!! FIXME
my $eps_adjust = ($upsample) ? 'dstsize' : 'srcsize';
my $incr = '';
my $incr2 = '';
# !!! FIXME: DEBUG_CONVERT should report frequencies.
print <<EOF;
static void SDLCALL
${sym}(SDL_AudioCVT * cvt, SDL_AudioFormat format)
{
#if DEBUG_CONVERT
fprintf(stderr, "$resample arbitrary (x%f) AUDIO_${from}, ${channels} channels.\\n", cvt->rate_incr);
#endif
const int srcsize = cvt->len_cvt - $fudge;
const int dstsize = (int) (((double)cvt->len_cvt) * cvt->rate_incr);
register int eps = 0;
EOF
my $endcomparison = '!=';
# Upsampling (growing the buffer) needs to work backwards, since we
# overwrite the buffer as we go.
if ($upsample) {
$endcomparison = '>='; # dst > target
print <<EOF;
$fctype *dst = (($fctype *) (cvt->buf + dstsize)) - $channels;
const $fctype *src = (($fctype *) (cvt->buf + cvt->len_cvt)) - $channels;
const $fctype *target = ((const $fctype *) cvt->buf);
EOF
} else {
$endcomparison = '<'; # dst < target
print <<EOF;
$fctype *dst = ($fctype *) cvt->buf;
const $fctype *src = ($fctype *) cvt->buf;
const $fctype *target = (const $fctype *) (cvt->buf + dstsize);
EOF
}
for (my $i = 0; $i < $channels; $i++) {
my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "src[$idx]");
print <<EOF;
$fctype sample${idx} = $val;
EOF
}
for (my $i = 0; $i < $channels; $i++) {
my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
print <<EOF;
$fctype last_sample${idx} = sample${idx};
EOF
}
print <<EOF;
while (dst $endcomparison target) {
EOF
if ($upsample) {
for (my $i = 0; $i < $channels; $i++) {
# !!! FIXME: don't do this swap every write, just when the samples change.
my $idx = (($channels - $i) - 1);
my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "sample${idx}");
print <<EOF;
dst[$idx] = $val;
EOF
}
$incr = ($channels == 1) ? 'dst--' : "dst -= $channels";
$incr2 = ($channels == 1) ? 'src--' : "src -= $channels";
print <<EOF;
$incr;
eps += srcsize;
if ((eps << 1) >= dstsize) {
$incr2;
EOF
} else { # downsample.
$incr = ($channels == 1) ? 'src++' : "src += $channels";
print <<EOF;
$incr;
eps += dstsize;
if ((eps << 1) >= srcsize) {
EOF
for (my $i = 0; $i < $channels; $i++) {
my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "sample${i}");
print <<EOF;
dst[$i] = $val;
EOF
}
$incr = ($channels == 1) ? 'dst++' : "dst += $channels";
print <<EOF;
$incr;
EOF
}
for (my $i = 0; $i < $channels; $i++) {
my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
my $swapped = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "src[$idx]");
print <<EOF;
sample${idx} = ($fctype) (((($bigger) $swapped) + (($bigger) last_sample${idx})) $interp);
EOF
}
for (my $i = 0; $i < $channels; $i++) {
my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
print <<EOF;
last_sample${idx} = sample${idx};
EOF
}
print <<EOF;
eps -= $eps_adjust;
}
}
EOF
print <<EOF;
cvt->len_cvt = dstsize;
if (cvt->filters[++cvt->filter_index]) {
cvt->filters[cvt->filter_index] (cvt, format);
}
}
EOF
}
# These handle clean resamples...doubling and quadrupling the sample rate, etc.
sub buildMultipleResampleFunc {
# !!! FIXME: we do a lot of unnecessary and ugly casting in here, due to getSwapFunc().
my ($from, $channels, $upsample, $multiple) = @_;
my ($fsigned, $ffloat, $fsize, $fendian, $fctype) = splittype($from);
my $bigger = getBiggerCtype($ffloat, $fsize);
my $interp = ($ffloat) ? '* 0.5' : '>> 1';
my $interp2 = ($ffloat) ? '* 0.25' : '>> 2';
my $mult3 = ($ffloat) ? '3.0' : '3';
my $lencvtop = ($upsample) ? '*' : '/';
my $resample = ($upsample) ? 'Upsample' : 'Downsample';
my $hashid = getResamplerHashId($from, $channels, $upsample, $multiple);
my $sym = "SDL_${resample}_${from}_${channels}c_x${multiple}";
$funcs{$hashid} = $sym;
$custom_converters++;
# !!! FIXME: DEBUG_CONVERT should report frequencies.
print <<EOF;
static void SDLCALL
${sym}(SDL_AudioCVT * cvt, SDL_AudioFormat format)
{
#if DEBUG_CONVERT
fprintf(stderr, "$resample (x${multiple}) AUDIO_${from}, ${channels} channels.\\n");
#endif
const int dstsize = cvt->len_cvt $lencvtop $multiple;
EOF
my $endcomparison = '!=';
# Upsampling (growing the buffer) needs to work backwards, since we
# overwrite the buffer as we go.
if ($upsample) {
$endcomparison = '>='; # dst > target
print <<EOF;
$fctype *dst = (($fctype *) (cvt->buf + dstsize)) - $channels * $multiple;
const $fctype *src = (($fctype *) (cvt->buf + cvt->len_cvt)) - $channels;
const $fctype *target = ((const $fctype *) cvt->buf);
EOF
} else {
$endcomparison = '<'; # dst < target
print <<EOF;
$fctype *dst = ($fctype *) cvt->buf;
const $fctype *src = ($fctype *) cvt->buf;
const $fctype *target = (const $fctype *) (cvt->buf + dstsize);
EOF
}
for (my $i = 0; $i < $channels; $i++) {
my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "src[$idx]");
print <<EOF;
$bigger last_sample${idx} = ($bigger) $val;
EOF
}
print <<EOF;
while (dst $endcomparison target) {
EOF
for (my $i = 0; $i < $channels; $i++) {
my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
my $val = getSwapFunc($fsize, $fsigned, $ffloat, $fendian, "src[$idx]");
print <<EOF;
const $bigger sample${idx} = ($bigger) $val;
EOF
}
my $incr = '';
if ($upsample) {
$incr = ($channels == 1) ? 'src--' : "src -= $channels";
} else {
my $amount = $channels * $multiple;
$incr = "src += $amount"; # can't ever be 1, so no "++" version.
}
print <<EOF;
$incr;
EOF
# !!! FIXME: This really begs for some Altivec or SSE, etc.
if ($upsample) {
if ($multiple == 2) {
for (my $i = $channels-1; $i >= 0; $i--) {
my $dsti = $i + $channels;
print <<EOF;
dst[$dsti] = ($fctype) ((sample${i} + last_sample${i}) $interp);
EOF
}
for (my $i = $channels-1; $i >= 0; $i--) {
my $dsti = $i;
print <<EOF;
dst[$dsti] = ($fctype) sample${i};
EOF
}
} elsif ($multiple == 4) {
for (my $i = $channels-1; $i >= 0; $i--) {
my $dsti = $i + ($channels * 3);
print <<EOF;
dst[$dsti] = ($fctype) ((sample${i} + ($mult3 * last_sample${i})) $interp2);
EOF
}
for (my $i = $channels-1; $i >= 0; $i--) {
my $dsti = $i + ($channels * 2);
print <<EOF;
dst[$dsti] = ($fctype) ((sample${i} + last_sample${i}) $interp);
EOF
}
for (my $i = $channels-1; $i >= 0; $i--) {
my $dsti = $i + ($channels * 1);
print <<EOF;
dst[$dsti] = ($fctype) ((($mult3 * sample${i}) + last_sample${i}) $interp2);
EOF
}
for (my $i = $channels-1; $i >= 0; $i--) {
my $dsti = $i + ($channels * 0);
print <<EOF;
dst[$dsti] = ($fctype) sample${i};
EOF
}
} else {
die('bug in program.'); # we only handle x2 and x4.
}
} else { # downsample.
if ($multiple == 2) {
for (my $i = 0; $i < $channels; $i++) {
print <<EOF;
dst[$i] = ($fctype) ((sample${i} + last_sample${i}) $interp);
EOF
}
} elsif ($multiple == 4) {
# !!! FIXME: interpolate all 4 samples?
for (my $i = 0; $i < $channels; $i++) {
print <<EOF;
dst[$i] = ($fctype) ((sample${i} + last_sample${i}) $interp);
EOF
}
} else {
die('bug in program.'); # we only handle x2 and x4.
}
}
for (my $i = 0; $i < $channels; $i++) {
my $idx = ($upsample) ? (($channels - $i) - 1) : $i;
print <<EOF;
last_sample${idx} = sample${idx};
EOF
}
if ($upsample) {
my $amount = $channels * $multiple;
$incr = "dst -= $amount"; # can't ever be 1, so no "--" version.
} else {
$incr = ($channels == 1) ? 'dst++' : "dst += $channels";
}
print <<EOF;
$incr;
}
cvt->len_cvt = dstsize;
if (cvt->filters[++cvt->filter_index]) {
cvt->filters[cvt->filter_index] (cvt, format);
}
}
EOF
}
sub buildResamplers {
print "#if !NO_RESAMPLERS\n\n";
foreach (@audiotypes) {
my $from = $_;
foreach (@channels) {
my $channel = $_;
buildArbitraryResampleFunc($from, $channel, 1);
buildArbitraryResampleFunc($from, $channel, 0);
}
}
print "\n#if !LESS_RESAMPLERS\n\n";
foreach (@audiotypes) {
my $from = $_;
foreach (@channels) {
my $channel = $_;
for (my $multiple = 2; $multiple <= 4; $multiple += 2) {
buildMultipleResampleFunc($from, $channel, 1, $multiple);
buildMultipleResampleFunc($from, $channel, 0, $multiple);
}
}
}
print "#endif /* !LESS_RESAMPLERS */\n";
print "#endif /* !NO_RESAMPLERS */\n\n\n";
print "const SDL_AudioRateFilters sdl_audio_rate_filters[] =\n{\n";
print "#if !NO_RESAMPLERS\n";
foreach (@audiotypes) {
my $from = $_;
foreach (@channels) {
my $channel = $_;
for (my $upsample = 0; $upsample <= 1; $upsample++) {
my $hashid = getResamplerHashId($from, $channel, $upsample, 0);
my $sym = $funcs{$hashid};
print(" { AUDIO_$from, $channel, $upsample, 0, $sym },\n");
}
}
}
print "#if !LESS_RESAMPLERS\n";
foreach (@audiotypes) {
my $from = $_;
foreach (@channels) {
my $channel = $_;
for (my $multiple = 2; $multiple <= 4; $multiple += 2) {
for (my $upsample = 0; $upsample <= 1; $upsample++) {
my $hashid = getResamplerHashId($from, $channel, $upsample, $multiple);
my $sym = $funcs{$hashid};
print(" { AUDIO_$from, $channel, $upsample, $multiple, $sym },\n");
}
}
}
}
print "#endif /* !LESS_RESAMPLERS */\n";
print "#endif /* !NO_RESAMPLERS */\n";
print(" { 0, 0, 0, 0, NULL }\n");
print "};\n\n";
}
# mainline ...
outputHeader();
buildTypeConverters();
buildResamplers();
outputFooter();
exit 0;
# end of sdlgenaudiocvt.pl ...

329
src/audio/sndio/SDL_sndioaudio.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_SNDIO
/* OpenBSD sndio target */
#if HAVE_STDIO_H
#include <stdio.h>
#endif
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include <unistd.h>
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "SDL_sndioaudio.h"
#ifdef SDL_AUDIO_DRIVER_SNDIO_DYNAMIC
#include "SDL_loadso.h"
#endif
static struct sio_hdl * (*SNDIO_sio_open)(const char *, unsigned int, int);
static void (*SNDIO_sio_close)(struct sio_hdl *);
static int (*SNDIO_sio_setpar)(struct sio_hdl *, struct sio_par *);
static int (*SNDIO_sio_getpar)(struct sio_hdl *, struct sio_par *);
static int (*SNDIO_sio_start)(struct sio_hdl *);
static int (*SNDIO_sio_stop)(struct sio_hdl *);
static size_t (*SNDIO_sio_read)(struct sio_hdl *, void *, size_t);
static size_t (*SNDIO_sio_write)(struct sio_hdl *, const void *, size_t);
static void (*SNDIO_sio_initpar)(struct sio_par *);
#ifdef SDL_AUDIO_DRIVER_SNDIO_DYNAMIC
static const char *sndio_library = SDL_AUDIO_DRIVER_SNDIO_DYNAMIC;
static void *sndio_handle = NULL;
static int
load_sndio_sym(const char *fn, void **addr)
{
*addr = SDL_LoadFunction(sndio_handle, fn);
if (*addr == NULL) {
/* Don't call SDL_SetError(): SDL_LoadFunction already did. */
return 0;
}
return 1;
}
/* cast funcs to char* first, to please GCC's strict aliasing rules. */
#define SDL_SNDIO_SYM(x) \
if (!load_sndio_sym(#x, (void **) (char *) &SNDIO_##x)) return -1
#else
#define SDL_SNDIO_SYM(x) SNDIO_##x = x
#endif
static int
load_sndio_syms(void)
{
SDL_SNDIO_SYM(sio_open);
SDL_SNDIO_SYM(sio_close);
SDL_SNDIO_SYM(sio_setpar);
SDL_SNDIO_SYM(sio_getpar);
SDL_SNDIO_SYM(sio_start);
SDL_SNDIO_SYM(sio_stop);
SDL_SNDIO_SYM(sio_read);
SDL_SNDIO_SYM(sio_write);
SDL_SNDIO_SYM(sio_initpar);
return 0;
}
#undef SDL_SNDIO_SYM
#ifdef SDL_AUDIO_DRIVER_SNDIO_DYNAMIC
static void
UnloadSNDIOLibrary(void)
{
if (sndio_handle != NULL) {
SDL_UnloadObject(sndio_handle);
sndio_handle = NULL;
}
}
static int
LoadSNDIOLibrary(void)
{
int retval = 0;
if (sndio_handle == NULL) {
sndio_handle = SDL_LoadObject(sndio_library);
if (sndio_handle == NULL) {
retval = -1;
/* Don't call SDL_SetError(): SDL_LoadObject already did. */
} else {
retval = load_sndio_syms();
if (retval < 0) {
UnloadSNDIOLibrary();
}
}
}
return retval;
}
#else
static void
UnloadSNDIOLibrary(void)
{
}
static int
LoadSNDIOLibrary(void)
{
load_sndio_syms();
return 0;
}
#endif /* SDL_AUDIO_DRIVER_SNDIO_DYNAMIC */
static void
SNDIO_WaitDevice(_THIS)
{
/* no-op; SNDIO_sio_write() blocks if necessary. */
}
static void
SNDIO_PlayDevice(_THIS)
{
const int written = SNDIO_sio_write(this->hidden->dev,
this->hidden->mixbuf,
this->hidden->mixlen);
/* If we couldn't write, assume fatal error for now */
if ( written == 0 ) {
this->enabled = 0;
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", written);
#endif
}
static Uint8 *
SNDIO_GetDeviceBuf(_THIS)
{
return this->hidden->mixbuf;
}
static void
SNDIO_WaitDone(_THIS)
{
SNDIO_sio_stop(this->hidden->dev);
}
static void
SNDIO_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if ( this->hidden->dev != NULL ) {
SNDIO_sio_close(this->hidden->dev);
this->hidden->dev = NULL;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
SNDIO_OpenDevice(_THIS, const char *devname, int iscapture)
{
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
struct sio_par par;
int status;
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc(sizeof(*this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, sizeof(*this->hidden));
this->hidden->mixlen = this->spec.size;
/* !!! FIXME: SIO_DEVANY can be a specific device... */
if ((this->hidden->dev = SNDIO_sio_open(NULL, SIO_PLAY, 0)) == NULL) {
SNDIO_CloseDevice(this);
return SDL_SetError("sio_open() failed");
}
SNDIO_sio_initpar(&par);
par.rate = this->spec.freq;
par.pchan = this->spec.channels;
par.round = this->spec.samples;
par.appbufsz = par.round * 2;
/* Try for a closest match on audio format */
status = -1;
while (test_format && (status < 0)) {
if (!SDL_AUDIO_ISFLOAT(test_format)) {
par.le = SDL_AUDIO_ISLITTLEENDIAN(test_format) ? 1 : 0;
par.sig = SDL_AUDIO_ISSIGNED(test_format) ? 1 : 0;
par.bits = SDL_AUDIO_BITSIZE(test_format);
if (SNDIO_sio_setpar(this->hidden->dev, &par) == 1) {
status = 0;
break;
}
}
test_format = SDL_NextAudioFormat();
}
if (status < 0) {
SNDIO_CloseDevice(this);
return SDL_SetError("sndio: Couldn't find any hardware audio formats");
}
if (SNDIO_sio_getpar(this->hidden->dev, &par) == 0) {
SNDIO_CloseDevice(this);
return SDL_SetError("sio_getpar() failed");
}
if ((par.bits == 32) && (par.sig) && (par.le))
this->spec.format = AUDIO_S32LSB;
else if ((par.bits == 32) && (par.sig) && (!par.le))
this->spec.format = AUDIO_S32MSB;
else if ((par.bits == 16) && (par.sig) && (par.le))
this->spec.format = AUDIO_S16LSB;
else if ((par.bits == 16) && (par.sig) && (!par.le))
this->spec.format = AUDIO_S16MSB;
else if ((par.bits == 16) && (!par.sig) && (par.le))
this->spec.format = AUDIO_U16LSB;
else if ((par.bits == 16) && (!par.sig) && (!par.le))
this->spec.format = AUDIO_U16MSB;
else if ((par.bits == 8) && (par.sig))
this->spec.format = AUDIO_S8;
else if ((par.bits == 8) && (!par.sig))
this->spec.format = AUDIO_U8;
else {
SNDIO_CloseDevice(this);
return SDL_SetError("sndio: Got unsupported hardware audio format.");
}
this->spec.freq = par.rate;
this->spec.channels = par.pchan;
this->spec.samples = par.round;
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
SNDIO_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->hidden->mixlen);
if (!SNDIO_sio_start(this->hidden->dev)) {
return SDL_SetError("sio_start() failed");
}
/* We're ready to rock and roll. :-) */
return 0;
}
static void
SNDIO_Deinitialize(void)
{
UnloadSNDIOLibrary();
}
static int
SNDIO_Init(SDL_AudioDriverImpl * impl)
{
if (LoadSNDIOLibrary() < 0) {
return 0;
}
/* Set the function pointers */
impl->OpenDevice = SNDIO_OpenDevice;
impl->WaitDevice = SNDIO_WaitDevice;
impl->PlayDevice = SNDIO_PlayDevice;
impl->GetDeviceBuf = SNDIO_GetDeviceBuf;
impl->WaitDone = SNDIO_WaitDone;
impl->CloseDevice = SNDIO_CloseDevice;
impl->Deinitialize = SNDIO_Deinitialize;
impl->OnlyHasDefaultOutputDevice = 1; /* !!! FIXME: sndio can handle multiple devices. */
return 1; /* this audio target is available. */
}
AudioBootStrap SNDIO_bootstrap = {
"sndio", "OpenBSD sndio", SNDIO_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_SNDIO */
/* vi: set ts=4 sw=4 expandtab: */

45
src/audio/sndio/SDL_sndioaudio.h Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_sndioaudio_h
#define _SDL_sndioaudio_h
#include <sndio.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The audio device handle */
struct sio_hdl *dev;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
};
#endif /* _SDL_sndioaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

430
src/audio/sun/SDL_sunaudio.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_SUNAUDIO
/* Allow access to a raw mixing buffer */
#include <fcntl.h>
#include <errno.h>
#ifdef __NETBSD__
#include <sys/ioctl.h>
#include <sys/audioio.h>
#endif
#ifdef __SVR4
#include <sys/audioio.h>
#else
#include <sys/time.h>
#include <sys/types.h>
#endif
#include <unistd.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audiomem.h"
#include "../SDL_audio_c.h"
#include "../SDL_audiodev_c.h"
#include "SDL_sunaudio.h"
/* Open the audio device for playback, and don't block if busy */
#if defined(AUDIO_GETINFO) && !defined(AUDIO_GETBUFINFO)
#define AUDIO_GETBUFINFO AUDIO_GETINFO
#endif
/* Audio driver functions */
static Uint8 snd2au(int sample);
/* Audio driver bootstrap functions */
static void
SUNAUDIO_DetectDevices(int iscapture, SDL_AddAudioDevice addfn)
{
SDL_EnumUnixAudioDevices(iscapture, 1, (int (*)(int fd)) NULL, addfn);
}
#ifdef DEBUG_AUDIO
void
CheckUnderflow(_THIS)
{
#ifdef AUDIO_GETBUFINFO
audio_info_t info;
int left;
ioctl(this->hidden->audio_fd, AUDIO_GETBUFINFO, &info);
left = (this->hidden->written - info.play.samples);
if (this->hidden->written && (left == 0)) {
fprintf(stderr, "audio underflow!\n");
}
#endif
}
#endif
static void
SUNAUDIO_WaitDevice(_THIS)
{
#ifdef AUDIO_GETBUFINFO
#define SLEEP_FUDGE 10 /* 10 ms scheduling fudge factor */
audio_info_t info;
Sint32 left;
ioctl(this->hidden->audio_fd, AUDIO_GETBUFINFO, &info);
left = (this->hidden->written - info.play.samples);
if (left > this->hidden->fragsize) {
Sint32 sleepy;
sleepy = ((left - this->hidden->fragsize) / this->hidden->frequency);
sleepy -= SLEEP_FUDGE;
if (sleepy > 0) {
SDL_Delay(sleepy);
}
}
#else
fd_set fdset;
FD_ZERO(&fdset);
FD_SET(this->hidden->audio_fd, &fdset);
select(this->hidden->audio_fd + 1, NULL, &fdset, NULL, NULL);
#endif
}
static void
SUNAUDIO_PlayDevice(_THIS)
{
/* Write the audio data */
if (this->hidden->ulaw_only) {
/* Assuming that this->spec.freq >= 8000 Hz */
int accum, incr, pos;
Uint8 *aubuf;
accum = 0;
incr = this->spec.freq / 8;
aubuf = this->hidden->ulaw_buf;
switch (this->hidden->audio_fmt & 0xFF) {
case 8:
{
Uint8 *sndbuf;
sndbuf = this->hidden->mixbuf;
for (pos = 0; pos < this->hidden->fragsize; ++pos) {
*aubuf = snd2au((0x80 - *sndbuf) * 64);
accum += incr;
while (accum > 0) {
accum -= 1000;
sndbuf += 1;
}
aubuf += 1;
}
}
break;
case 16:
{
Sint16 *sndbuf;
sndbuf = (Sint16 *) this->hidden->mixbuf;
for (pos = 0; pos < this->hidden->fragsize; ++pos) {
*aubuf = snd2au(*sndbuf / 4);
accum += incr;
while (accum > 0) {
accum -= 1000;
sndbuf += 1;
}
aubuf += 1;
}
}
break;
}
#ifdef DEBUG_AUDIO
CheckUnderflow(this);
#endif
if (write(this->hidden->audio_fd, this->hidden->ulaw_buf,
this->hidden->fragsize) < 0) {
/* Assume fatal error, for now */
this->enabled = 0;
}
this->hidden->written += this->hidden->fragsize;
} else {
#ifdef DEBUG_AUDIO
CheckUnderflow(this);
#endif
if (write(this->hidden->audio_fd, this->hidden->mixbuf,
this->spec.size) < 0) {
/* Assume fatal error, for now */
this->enabled = 0;
}
this->hidden->written += this->hidden->fragsize;
}
}
static Uint8 *
SUNAUDIO_GetDeviceBuf(_THIS)
{
return (this->hidden->mixbuf);
}
static void
SUNAUDIO_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
if (this->hidden->mixbuf != NULL) {
SDL_FreeAudioMem(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->ulaw_buf != NULL) {
SDL_free(this->hidden->ulaw_buf);
this->hidden->ulaw_buf = NULL;
}
if (this->hidden->audio_fd >= 0) {
close(this->hidden->audio_fd);
this->hidden->audio_fd = -1;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
SUNAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
{
const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
SDL_AudioFormat format = 0;
audio_info_t info;
/* We don't care what the devname is...we'll try to open anything. */
/* ...but default to first name in the list... */
if (devname == NULL) {
devname = SDL_GetAudioDeviceName(0, iscapture);
if (devname == NULL) {
return SDL_SetError("No such audio device");
}
}
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Open the audio device */
this->hidden->audio_fd = open(devname, flags, 0);
if (this->hidden->audio_fd < 0) {
return SDL_SetError("Couldn't open %s: %s", devname, strerror(errno));
}
#ifdef AUDIO_SETINFO
int enc;
#endif
int desired_freq = this->spec.freq;
/* Determine the audio parameters from the AudioSpec */
switch (SDL_AUDIO_BITSIZE(this->spec.format)) {
case 8:
{ /* Unsigned 8 bit audio data */
this->spec.format = AUDIO_U8;
#ifdef AUDIO_SETINFO
enc = AUDIO_ENCODING_LINEAR8;
#endif
}
break;
case 16:
{ /* Signed 16 bit audio data */
this->spec.format = AUDIO_S16SYS;
#ifdef AUDIO_SETINFO
enc = AUDIO_ENCODING_LINEAR;
#endif
}
break;
default:
{
/* !!! FIXME: fallback to conversion on unsupported types! */
return SDL_SetError("Unsupported audio format");
}
}
this->hidden->audio_fmt = this->spec.format;
this->hidden->ulaw_only = 0; /* modern Suns do support linear audio */
#ifdef AUDIO_SETINFO
for (;;) {
audio_info_t info;
AUDIO_INITINFO(&info); /* init all fields to "no change" */
/* Try to set the requested settings */
info.play.sample_rate = this->spec.freq;
info.play.channels = this->spec.channels;
info.play.precision = (enc == AUDIO_ENCODING_ULAW)
? 8 : this->spec.format & 0xff;
info.play.encoding = enc;
if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) == 0) {
/* Check to be sure we got what we wanted */
if (ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info) < 0) {
return SDL_SetError("Error getting audio parameters: %s",
strerror(errno));
}
if (info.play.encoding == enc
&& info.play.precision == (this->spec.format & 0xff)
&& info.play.channels == this->spec.channels) {
/* Yow! All seems to be well! */
this->spec.freq = info.play.sample_rate;
break;
}
}
switch (enc) {
case AUDIO_ENCODING_LINEAR8:
/* unsigned 8bit apparently not supported here */
enc = AUDIO_ENCODING_LINEAR;
this->spec.format = AUDIO_S16SYS;
break; /* try again */
case AUDIO_ENCODING_LINEAR:
/* linear 16bit didn't work either, resort to <20>-law */
enc = AUDIO_ENCODING_ULAW;
this->spec.channels = 1;
this->spec.freq = 8000;
this->spec.format = AUDIO_U8;
this->hidden->ulaw_only = 1;
break;
default:
/* oh well... */
return SDL_SetError("Error setting audio parameters: %s",
strerror(errno));
}
}
#endif /* AUDIO_SETINFO */
this->hidden->written = 0;
/* We can actually convert on-the-fly to U-Law */
if (this->hidden->ulaw_only) {
this->spec.freq = desired_freq;
this->hidden->fragsize = (this->spec.samples * 1000) /
(this->spec.freq / 8);
this->hidden->frequency = 8;
this->hidden->ulaw_buf = (Uint8 *) SDL_malloc(this->hidden->fragsize);
if (this->hidden->ulaw_buf == NULL) {
return SDL_OutOfMemory();
}
this->spec.channels = 1;
} else {
this->hidden->fragsize = this->spec.samples;
this->hidden->frequency = this->spec.freq / 1000;
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Audio device %s U-Law only\n",
this->hidden->ulaw_only ? "is" : "is not");
fprintf(stderr, "format=0x%x chan=%d freq=%d\n",
this->spec.format, this->spec.channels, this->spec.freq);
#endif
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(&this->spec);
/* Allocate mixing buffer */
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->spec.size);
if (this->hidden->mixbuf == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
/* We're ready to rock and roll. :-) */
return 0;
}
/************************************************************************/
/* This function (snd2au()) copyrighted: */
/************************************************************************/
/* Copyright 1989 by Rich Gopstein and Harris Corporation */
/* */
/* Permission to use, copy, modify, and distribute this software */
/* and its documentation for any purpose and without fee is */
/* hereby granted, provided that the above copyright notice */
/* appears in all copies and that both that copyright notice and */
/* this permission notice appear in supporting documentation, and */
/* that the name of Rich Gopstein and Harris Corporation not be */
/* used in advertising or publicity pertaining to distribution */
/* of the software without specific, written prior permission. */
/* Rich Gopstein and Harris Corporation make no representations */
/* about the suitability of this software for any purpose. It */
/* provided "as is" without express or implied warranty. */
/************************************************************************/
static Uint8
snd2au(int sample)
{
int mask;
if (sample < 0) {
sample = -sample;
mask = 0x7f;
} else {
mask = 0xff;
}
if (sample < 32) {
sample = 0xF0 | (15 - sample / 2);
} else if (sample < 96) {
sample = 0xE0 | (15 - (sample - 32) / 4);
} else if (sample < 224) {
sample = 0xD0 | (15 - (sample - 96) / 8);
} else if (sample < 480) {
sample = 0xC0 | (15 - (sample - 224) / 16);
} else if (sample < 992) {
sample = 0xB0 | (15 - (sample - 480) / 32);
} else if (sample < 2016) {
sample = 0xA0 | (15 - (sample - 992) / 64);
} else if (sample < 4064) {
sample = 0x90 | (15 - (sample - 2016) / 128);
} else if (sample < 8160) {
sample = 0x80 | (15 - (sample - 4064) / 256);
} else {
sample = 0x80;
}
return (mask & sample);
}
static int
SUNAUDIO_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->DetectDevices = SUNAUDIO_DetectDevices;
impl->OpenDevice = SUNAUDIO_OpenDevice;
impl->PlayDevice = SUNAUDIO_PlayDevice;
impl->WaitDevice = SUNAUDIO_WaitDevice;
impl->GetDeviceBuf = SUNAUDIO_GetDeviceBuf;
impl->CloseDevice = SUNAUDIO_CloseDevice;
return 1; /* this audio target is available. */
}
AudioBootStrap SUNAUDIO_bootstrap = {
"audio", "UNIX /dev/audio interface", SUNAUDIO_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_SUNAUDIO */
/* vi: set ts=4 sw=4 expandtab: */

47
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_sunaudio_h
#define _SDL_sunaudio_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The file descriptor for the audio device */
int audio_fd;
SDL_AudioFormat audio_fmt; /* The app audio format */
Uint8 *mixbuf; /* The app mixing buffer */
int ulaw_only; /* Flag -- does hardware only output U-law? */
Uint8 *ulaw_buf; /* The U-law mixing buffer */
Sint32 written; /* The number of samples written */
int fragsize; /* The audio fragment size in samples */
int frequency; /* The audio frequency in KHz */
};
#endif /* _SDL_sunaudio_h */
/* vi: set ts=4 sw=4 expandtab: */

402
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_WINMM
/* Allow access to a raw mixing buffer */
#include "../../core/windows/SDL_windows.h"
#include <mmsystem.h>
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "SDL_winmm.h"
#ifndef WAVE_FORMAT_IEEE_FLOAT
#define WAVE_FORMAT_IEEE_FLOAT 0x0003
#endif
#define DETECT_DEV_IMPL(typ, capstyp) \
static void DetectWave##typ##Devs(SDL_AddAudioDevice addfn) { \
const UINT devcount = wave##typ##GetNumDevs(); \
capstyp caps; \
UINT i; \
for (i = 0; i < devcount; i++) { \
if (wave##typ##GetDevCaps(i,&caps,sizeof(caps))==MMSYSERR_NOERROR) { \
char *name = WIN_StringToUTF8(caps.szPname); \
if (name != NULL) { \
addfn(name); \
SDL_free(name); \
} \
} \
} \
}
DETECT_DEV_IMPL(Out, WAVEOUTCAPS)
DETECT_DEV_IMPL(In, WAVEINCAPS)
static void
WINMM_DetectDevices(int iscapture, SDL_AddAudioDevice addfn)
{
if (iscapture) {
DetectWaveInDevs(addfn);
} else {
DetectWaveOutDevs(addfn);
}
}
static void CALLBACK
CaptureSound(HWAVEIN hwi, UINT uMsg, DWORD_PTR dwInstance,
DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
SDL_AudioDevice *this = (SDL_AudioDevice *) dwInstance;
/* Only service "buffer is filled" messages */
if (uMsg != WIM_DATA)
return;
/* Signal that we have a new buffer of data */
ReleaseSemaphore(this->hidden->audio_sem, 1, NULL);
}
/* The Win32 callback for filling the WAVE device */
static void CALLBACK
FillSound(HWAVEOUT hwo, UINT uMsg, DWORD_PTR dwInstance,
DWORD_PTR dwParam1, DWORD_PTR dwParam2)
{
SDL_AudioDevice *this = (SDL_AudioDevice *) dwInstance;
/* Only service "buffer done playing" messages */
if (uMsg != WOM_DONE)
return;
/* Signal that we are done playing a buffer */
ReleaseSemaphore(this->hidden->audio_sem, 1, NULL);
}
static int
SetMMerror(char *function, MMRESULT code)
{
size_t len;
char errbuf[MAXERRORLENGTH];
wchar_t werrbuf[MAXERRORLENGTH];
SDL_snprintf(errbuf, SDL_arraysize(errbuf), "%s: ", function);
len = SDL_strlen(errbuf);
waveOutGetErrorText(code, werrbuf, MAXERRORLENGTH - len);
WideCharToMultiByte(CP_ACP, 0, werrbuf, -1, errbuf + len,
MAXERRORLENGTH - len, NULL, NULL);
return SDL_SetError("%s", errbuf);
}
static void
WINMM_WaitDevice(_THIS)
{
/* Wait for an audio chunk to finish */
WaitForSingleObject(this->hidden->audio_sem, INFINITE);
}
static Uint8 *
WINMM_GetDeviceBuf(_THIS)
{
return (Uint8 *) (this->hidden->
wavebuf[this->hidden->next_buffer].lpData);
}
static void
WINMM_PlayDevice(_THIS)
{
/* Queue it up */
waveOutWrite(this->hidden->hout,
&this->hidden->wavebuf[this->hidden->next_buffer],
sizeof(this->hidden->wavebuf[0]));
this->hidden->next_buffer = (this->hidden->next_buffer + 1) % NUM_BUFFERS;
}
static void
WINMM_WaitDone(_THIS)
{
int i, left;
do {
left = NUM_BUFFERS;
for (i = 0; i < NUM_BUFFERS; ++i) {
if (this->hidden->wavebuf[i].dwFlags & WHDR_DONE) {
--left;
}
}
if (left > 0) {
SDL_Delay(100);
}
} while (left > 0);
}
static void
WINMM_CloseDevice(_THIS)
{
/* Close up audio */
if (this->hidden != NULL) {
int i;
if (this->hidden->audio_sem) {
CloseHandle(this->hidden->audio_sem);
this->hidden->audio_sem = 0;
}
/* Clean up mixing buffers */
for (i = 0; i < NUM_BUFFERS; ++i) {
if (this->hidden->wavebuf[i].dwUser != 0xFFFF) {
waveOutUnprepareHeader(this->hidden->hout,
&this->hidden->wavebuf[i],
sizeof(this->hidden->wavebuf[i]));
this->hidden->wavebuf[i].dwUser = 0xFFFF;
}
}
if (this->hidden->mixbuf != NULL) {
/* Free raw mixing buffer */
SDL_free(this->hidden->mixbuf);
this->hidden->mixbuf = NULL;
}
if (this->hidden->hin) {
waveInClose(this->hidden->hin);
this->hidden->hin = 0;
}
if (this->hidden->hout) {
waveOutClose(this->hidden->hout);
this->hidden->hout = 0;
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static SDL_bool
PrepWaveFormat(_THIS, UINT_PTR devId, WAVEFORMATEX *pfmt, const int iscapture)
{
SDL_zerop(pfmt);
if (SDL_AUDIO_ISFLOAT(this->spec.format)) {
pfmt->wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
} else {
pfmt->wFormatTag = WAVE_FORMAT_PCM;
}
pfmt->wBitsPerSample = SDL_AUDIO_BITSIZE(this->spec.format);
pfmt->nChannels = this->spec.channels;
pfmt->nSamplesPerSec = this->spec.freq;
pfmt->nBlockAlign = pfmt->nChannels * (pfmt->wBitsPerSample / 8);
pfmt->nAvgBytesPerSec = pfmt->nSamplesPerSec * pfmt->nBlockAlign;
if (iscapture) {
return (waveInOpen(0, devId, pfmt, 0, 0, WAVE_FORMAT_QUERY) == 0);
} else {
return (waveOutOpen(0, devId, pfmt, 0, 0, WAVE_FORMAT_QUERY) == 0);
}
}
static int
WINMM_OpenDevice(_THIS, const char *devname, int iscapture)
{
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
int valid_datatype = 0;
MMRESULT result;
WAVEFORMATEX waveformat;
UINT_PTR devId = WAVE_MAPPER; /* WAVE_MAPPER == choose system's default */
char *utf8 = NULL;
int i;
if (devname != NULL) { /* specific device requested? */
if (iscapture) {
const int devcount = (int) waveInGetNumDevs();
WAVEINCAPS caps;
for (i = 0; (i < devcount) && (devId == WAVE_MAPPER); i++) {
result = waveInGetDevCaps(i, &caps, sizeof (caps));
if (result != MMSYSERR_NOERROR)
continue;
else if ((utf8 = WIN_StringToUTF8(caps.szPname)) == NULL)
continue;
else if (SDL_strcmp(devname, utf8) == 0)
devId = (UINT_PTR) i;
SDL_free(utf8);
}
} else {
const int devcount = (int) waveOutGetNumDevs();
WAVEOUTCAPS caps;
for (i = 0; (i < devcount) && (devId == WAVE_MAPPER); i++) {
result = waveOutGetDevCaps(i, &caps, sizeof (caps));
if (result != MMSYSERR_NOERROR)
continue;
else if ((utf8 = WIN_StringToUTF8(caps.szPname)) == NULL)
continue;
else if (SDL_strcmp(devname, utf8) == 0)
devId = (UINT_PTR) i;
SDL_free(utf8);
}
}
if (devId == WAVE_MAPPER) {
return SDL_SetError("Requested device not found");
}
}
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Initialize the wavebuf structures for closing */
for (i = 0; i < NUM_BUFFERS; ++i)
this->hidden->wavebuf[i].dwUser = 0xFFFF;
if (this->spec.channels > 2)
this->spec.channels = 2; /* !!! FIXME: is this right? */
/* Check the buffer size -- minimum of 1/4 second (word aligned) */
if (this->spec.samples < (this->spec.freq / 4))
this->spec.samples = ((this->spec.freq / 4) + 3) & ~3;
while ((!valid_datatype) && (test_format)) {
switch (test_format) {
case AUDIO_U8:
case AUDIO_S16:
case AUDIO_S32:
case AUDIO_F32:
this->spec.format = test_format;
if (PrepWaveFormat(this, devId, &waveformat, iscapture)) {
valid_datatype = 1;
} else {
test_format = SDL_NextAudioFormat();
}
break;
default:
test_format = SDL_NextAudioFormat();
break;
}
}
if (!valid_datatype) {
WINMM_CloseDevice(this);
return SDL_SetError("Unsupported audio format");
}
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(&this->spec);
/* Open the audio device */
if (iscapture) {
result = waveInOpen(&this->hidden->hin, devId, &waveformat,
(DWORD_PTR) CaptureSound, (DWORD_PTR) this,
CALLBACK_FUNCTION);
} else {
result = waveOutOpen(&this->hidden->hout, devId, &waveformat,
(DWORD_PTR) FillSound, (DWORD_PTR) this,
CALLBACK_FUNCTION);
}
if (result != MMSYSERR_NOERROR) {
WINMM_CloseDevice(this);
return SetMMerror("waveOutOpen()", result);
}
#ifdef SOUND_DEBUG
/* Check the sound device we retrieved */
{
WAVEOUTCAPS caps;
result = waveOutGetDevCaps((UINT) this->hidden->hout,
&caps, sizeof(caps));
if (result != MMSYSERR_NOERROR) {
WINMM_CloseDevice(this);
return SetMMerror("waveOutGetDevCaps()", result);
}
printf("Audio device: %s\n", caps.szPname);
}
#endif
/* Create the audio buffer semaphore */
this->hidden->audio_sem =
CreateSemaphore(NULL, NUM_BUFFERS - 1, NUM_BUFFERS, NULL);
if (this->hidden->audio_sem == NULL) {
WINMM_CloseDevice(this);
return SDL_SetError("Couldn't create semaphore");
}
/* Create the sound buffers */
this->hidden->mixbuf =
(Uint8 *) SDL_malloc(NUM_BUFFERS * this->spec.size);
if (this->hidden->mixbuf == NULL) {
WINMM_CloseDevice(this);
return SDL_OutOfMemory();
}
for (i = 0; i < NUM_BUFFERS; ++i) {
SDL_memset(&this->hidden->wavebuf[i], 0,
sizeof(this->hidden->wavebuf[i]));
this->hidden->wavebuf[i].dwBufferLength = this->spec.size;
this->hidden->wavebuf[i].dwFlags = WHDR_DONE;
this->hidden->wavebuf[i].lpData =
(LPSTR) & this->hidden->mixbuf[i * this->spec.size];
result = waveOutPrepareHeader(this->hidden->hout,
&this->hidden->wavebuf[i],
sizeof(this->hidden->wavebuf[i]));
if (result != MMSYSERR_NOERROR) {
WINMM_CloseDevice(this);
return SetMMerror("waveOutPrepareHeader()", result);
}
}
return 0; /* Ready to go! */
}
static int
WINMM_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->DetectDevices = WINMM_DetectDevices;
impl->OpenDevice = WINMM_OpenDevice;
impl->PlayDevice = WINMM_PlayDevice;
impl->WaitDevice = WINMM_WaitDevice;
impl->WaitDone = WINMM_WaitDone;
impl->GetDeviceBuf = WINMM_GetDeviceBuf;
impl->CloseDevice = WINMM_CloseDevice;
return 1; /* this audio target is available. */
}
AudioBootStrap WINMM_bootstrap = {
"winmm", "Windows Waveform Audio", WINMM_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_WINMM */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_winmm_h
#define _SDL_winmm_h
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
#define NUM_BUFFERS 2 /* -- Don't lower this! */
struct SDL_PrivateAudioData
{
HWAVEOUT hout;
HWAVEIN hin;
HANDLE audio_sem;
Uint8 *mixbuf; /* The raw allocated mixing buffer */
WAVEHDR wavebuf[NUM_BUFFERS]; /* Wave audio fragments */
int next_buffer;
};
#endif /* _SDL_winmm_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if SDL_AUDIO_DRIVER_XAUDIO2
#include "../../core/windows/SDL_windows.h"
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "../SDL_sysaudio.h"
#include "SDL_assert.h"
#ifdef __GNUC__
/* The configure script already did any necessary checking */
# define SDL_XAUDIO2_HAS_SDK 1
#else
#include <dxsdkver.h> /* XAudio2 exists as of the March 2008 DirectX SDK */
#if (!defined(_DXSDK_BUILD_MAJOR) || (_DXSDK_BUILD_MAJOR < 1284))
# pragma message("Your DirectX SDK is too old. Disabling XAudio2 support.")
#else
# define SDL_XAUDIO2_HAS_SDK 1
#endif
#endif /* __GNUC__ */
#ifdef SDL_XAUDIO2_HAS_SDK
#define INITGUID 1
#include <xaudio2.h>
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
IXAudio2 *ixa2;
IXAudio2SourceVoice *source;
IXAudio2MasteringVoice *mastering;
HANDLE semaphore;
Uint8 *mixbuf;
int mixlen;
Uint8 *nextbuf;
};
static __inline__ char *
utf16_to_utf8(const WCHAR *S)
{
/* !!! FIXME: this should be UTF-16, not UCS-2! */
return SDL_iconv_string("UTF-8", "UCS-2", (char *)(S),
(SDL_wcslen(S)+1)*sizeof(WCHAR));
}
static void
XAUDIO2_DetectDevices(int iscapture, SDL_AddAudioDevice addfn)
{
IXAudio2 *ixa2 = NULL;
UINT32 devcount = 0;
UINT32 i = 0;
if (iscapture) {
SDL_SetError("XAudio2: capture devices unsupported.");
return;
} else if (XAudio2Create(&ixa2, 0, XAUDIO2_DEFAULT_PROCESSOR) != S_OK) {
SDL_SetError("XAudio2: XAudio2Create() failed at detection.");
return;
} else if (IXAudio2_GetDeviceCount(ixa2, &devcount) != S_OK) {
SDL_SetError("XAudio2: IXAudio2::GetDeviceCount() failed.");
IXAudio2_Release(ixa2);
return;
}
for (i = 0; i < devcount; i++) {
XAUDIO2_DEVICE_DETAILS details;
if (IXAudio2_GetDeviceDetails(ixa2, i, &details) == S_OK) {
char *str = utf16_to_utf8(details.DisplayName);
if (str != NULL) {
addfn(str);
SDL_free(str); /* addfn() made a copy of the string. */
}
}
}
IXAudio2_Release(ixa2);
}
static void STDMETHODCALLTYPE
VoiceCBOnBufferEnd(THIS_ void *data)
{
/* Just signal the SDL audio thread and get out of XAudio2's way. */
SDL_AudioDevice *this = (SDL_AudioDevice *) data;
ReleaseSemaphore(this->hidden->semaphore, 1, NULL);
}
static void STDMETHODCALLTYPE
VoiceCBOnVoiceError(THIS_ void *data, HRESULT Error)
{
/* !!! FIXME: attempt to recover, or mark device disconnected. */
SDL_assert(0 && "write me!");
}
/* no-op callbacks... */
static void STDMETHODCALLTYPE VoiceCBOnStreamEnd(THIS) {}
static void STDMETHODCALLTYPE VoiceCBOnVoiceProcessPassStart(THIS_ UINT32 b) {}
static void STDMETHODCALLTYPE VoiceCBOnVoiceProcessPassEnd(THIS) {}
static void STDMETHODCALLTYPE VoiceCBOnBufferStart(THIS_ void *data) {}
static void STDMETHODCALLTYPE VoiceCBOnLoopEnd(THIS_ void *data) {}
static Uint8 *
XAUDIO2_GetDeviceBuf(_THIS)
{
return this->hidden->nextbuf;
}
static void
XAUDIO2_PlayDevice(_THIS)
{
XAUDIO2_BUFFER buffer;
Uint8 *mixbuf = this->hidden->mixbuf;
Uint8 *nextbuf = this->hidden->nextbuf;
const int mixlen = this->hidden->mixlen;
IXAudio2SourceVoice *source = this->hidden->source;
HRESULT result = S_OK;
if (!this->enabled) { /* shutting down? */
return;
}
/* Submit the next filled buffer */
SDL_zero(buffer);
buffer.AudioBytes = mixlen;
buffer.pAudioData = nextbuf;
buffer.pContext = this;
if (nextbuf == mixbuf) {
nextbuf += mixlen;
} else {
nextbuf = mixbuf;
}
this->hidden->nextbuf = nextbuf;
result = IXAudio2SourceVoice_SubmitSourceBuffer(source, &buffer, NULL);
if (result == XAUDIO2_E_DEVICE_INVALIDATED) {
/* !!! FIXME: possibly disconnected or temporary lost. Recover? */
}
if (result != S_OK) { /* uhoh, panic! */
IXAudio2SourceVoice_FlushSourceBuffers(source);
this->enabled = 0;
}
}
static void
XAUDIO2_WaitDevice(_THIS)
{
if (this->enabled) {
WaitForSingleObject(this->hidden->semaphore, INFINITE);
}
}
static void
XAUDIO2_WaitDone(_THIS)
{
IXAudio2SourceVoice *source = this->hidden->source;
XAUDIO2_VOICE_STATE state;
SDL_assert(!this->enabled); /* flag that stops playing. */
IXAudio2SourceVoice_Discontinuity(source);
IXAudio2SourceVoice_GetState(source, &state);
while (state.BuffersQueued > 0) {
WaitForSingleObject(this->hidden->semaphore, INFINITE);
IXAudio2SourceVoice_GetState(source, &state);
}
}
static void
XAUDIO2_CloseDevice(_THIS)
{
if (this->hidden != NULL) {
IXAudio2 *ixa2 = this->hidden->ixa2;
IXAudio2SourceVoice *source = this->hidden->source;
IXAudio2MasteringVoice *mastering = this->hidden->mastering;
if (source != NULL) {
IXAudio2SourceVoice_Stop(source, 0, XAUDIO2_COMMIT_NOW);
IXAudio2SourceVoice_FlushSourceBuffers(source);
IXAudio2SourceVoice_DestroyVoice(source);
}
if (ixa2 != NULL) {
IXAudio2_StopEngine(ixa2);
}
if (mastering != NULL) {
IXAudio2MasteringVoice_DestroyVoice(mastering);
}
if (ixa2 != NULL) {
IXAudio2_Release(ixa2);
}
if (this->hidden->mixbuf != NULL) {
SDL_free(this->hidden->mixbuf);
}
if (this->hidden->semaphore != NULL) {
CloseHandle(this->hidden->semaphore);
}
SDL_free(this->hidden);
this->hidden = NULL;
}
}
static int
XAUDIO2_OpenDevice(_THIS, const char *devname, int iscapture)
{
HRESULT result = S_OK;
WAVEFORMATEX waveformat;
int valid_format = 0;
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
IXAudio2 *ixa2 = NULL;
IXAudio2SourceVoice *source = NULL;
UINT32 devId = 0; /* 0 == system default device. */
static IXAudio2VoiceCallbackVtbl callbacks_vtable = {
VoiceCBOnVoiceProcessPassStart,
VoiceCBOnVoiceProcessPassEnd,
VoiceCBOnStreamEnd,
VoiceCBOnBufferStart,
VoiceCBOnBufferEnd,
VoiceCBOnLoopEnd,
VoiceCBOnVoiceError
};
static IXAudio2VoiceCallback callbacks = { &callbacks_vtable };
if (iscapture) {
return SDL_SetError("XAudio2: capture devices unsupported.");
} else if (XAudio2Create(&ixa2, 0, XAUDIO2_DEFAULT_PROCESSOR) != S_OK) {
return SDL_SetError("XAudio2: XAudio2Create() failed at open.");
}
if (devname != NULL) {
UINT32 devcount = 0;
UINT32 i = 0;
if (IXAudio2_GetDeviceCount(ixa2, &devcount) != S_OK) {
IXAudio2_Release(ixa2);
return SDL_SetError("XAudio2: IXAudio2_GetDeviceCount() failed.");
}
for (i = 0; i < devcount; i++) {
XAUDIO2_DEVICE_DETAILS details;
if (IXAudio2_GetDeviceDetails(ixa2, i, &details) == S_OK) {
char *str = utf16_to_utf8(details.DisplayName);
if (str != NULL) {
const int match = (SDL_strcmp(str, devname) == 0);
SDL_free(str);
if (match) {
devId = i;
break;
}
}
}
}
if (i == devcount) {
IXAudio2_Release(ixa2);
return SDL_SetError("XAudio2: Requested device not found.");
}
}
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
IXAudio2_Release(ixa2);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
this->hidden->ixa2 = ixa2;
this->hidden->semaphore = CreateSemaphore(NULL, 1, 2, NULL);
if (this->hidden->semaphore == NULL) {
XAUDIO2_CloseDevice(this);
return SDL_SetError("XAudio2: CreateSemaphore() failed!");
}
while ((!valid_format) && (test_format)) {
switch (test_format) {
case AUDIO_U8:
case AUDIO_S16:
case AUDIO_S32:
case AUDIO_F32:
this->spec.format = test_format;
valid_format = 1;
break;
}
test_format = SDL_NextAudioFormat();
}
if (!valid_format) {
XAUDIO2_CloseDevice(this);
return SDL_SetError("XAudio2: Unsupported audio format");
}
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(&this->spec);
/* We feed a Source, it feeds the Mastering, which feeds the device. */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_malloc(2 * this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
XAUDIO2_CloseDevice(this);
return SDL_OutOfMemory();
}
this->hidden->nextbuf = this->hidden->mixbuf;
SDL_memset(this->hidden->mixbuf, 0, 2 * this->hidden->mixlen);
/* We use XAUDIO2_DEFAULT_CHANNELS instead of this->spec.channels. On
Xbox360, this means 5.1 output, but on Windows, it means "figure out
what the system has." It might be preferable to let XAudio2 blast
stereo output to appropriate surround sound configurations
instead of clamping to 2 channels, even though we'll configure the
Source Voice for whatever number of channels you supply. */
result = IXAudio2_CreateMasteringVoice(ixa2, &this->hidden->mastering,
XAUDIO2_DEFAULT_CHANNELS,
this->spec.freq, 0, devId, NULL);
if (result != S_OK) {
XAUDIO2_CloseDevice(this);
return SDL_SetError("XAudio2: Couldn't create mastering voice");
}
SDL_zero(waveformat);
if (SDL_AUDIO_ISFLOAT(this->spec.format)) {
waveformat.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
} else {
waveformat.wFormatTag = WAVE_FORMAT_PCM;
}
waveformat.wBitsPerSample = SDL_AUDIO_BITSIZE(this->spec.format);
waveformat.nChannels = this->spec.channels;
waveformat.nSamplesPerSec = this->spec.freq;
waveformat.nBlockAlign =
waveformat.nChannels * (waveformat.wBitsPerSample / 8);
waveformat.nAvgBytesPerSec =
waveformat.nSamplesPerSec * waveformat.nBlockAlign;
result = IXAudio2_CreateSourceVoice(ixa2, &source, &waveformat,
XAUDIO2_VOICE_NOSRC |
XAUDIO2_VOICE_NOPITCH,
1.0f, &callbacks, NULL, NULL);
if (result != S_OK) {
XAUDIO2_CloseDevice(this);
return SDL_SetError("XAudio2: Couldn't create source voice");
}
this->hidden->source = source;
/* Start everything playing! */
result = IXAudio2_StartEngine(ixa2);
if (result != S_OK) {
XAUDIO2_CloseDevice(this);
return SDL_SetError("XAudio2: Couldn't start engine");
}
result = IXAudio2SourceVoice_Start(source, 0, XAUDIO2_COMMIT_NOW);
if (result != S_OK) {
XAUDIO2_CloseDevice(this);
return SDL_SetError("XAudio2: Couldn't start source voice");
}
return 0; /* good to go. */
}
static void
XAUDIO2_Deinitialize(void)
{
WIN_CoUninitialize();
}
#endif /* SDL_XAUDIO2_HAS_SDK */
static int
XAUDIO2_Init(SDL_AudioDriverImpl * impl)
{
#ifndef SDL_XAUDIO2_HAS_SDK
SDL_SetError("XAudio2: SDL was built without XAudio2 support (old DirectX SDK).");
return 0; /* no XAudio2 support, ever. Update your SDK! */
#else
/* XAudio2Create() is a macro that uses COM; we don't load the .dll */
IXAudio2 *ixa2 = NULL;
if (FAILED(WIN_CoInitialize())) {
SDL_SetError("XAudio2: CoInitialize() failed");
return 0;
}
if (XAudio2Create(&ixa2, 0, XAUDIO2_DEFAULT_PROCESSOR) != S_OK) {
WIN_CoUninitialize();
SDL_SetError("XAudio2: XAudio2Create() failed at initialization");
return 0; /* not available. */
}
IXAudio2_Release(ixa2);
/* Set the function pointers */
impl->DetectDevices = XAUDIO2_DetectDevices;
impl->OpenDevice = XAUDIO2_OpenDevice;
impl->PlayDevice = XAUDIO2_PlayDevice;
impl->WaitDevice = XAUDIO2_WaitDevice;
impl->WaitDone = XAUDIO2_WaitDone;
impl->GetDeviceBuf = XAUDIO2_GetDeviceBuf;
impl->CloseDevice = XAUDIO2_CloseDevice;
impl->Deinitialize = XAUDIO2_Deinitialize;
return 1; /* this audio target is available. */
#endif
}
AudioBootStrap XAUDIO2_bootstrap = {
"xaudio2", "XAudio2", XAUDIO2_Init, 0
};
#endif /* SDL_AUDIO_DRIVER_XAUDIO2 */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
extern "C" {
/* *INDENT-ON* */
#endif
#include "SDL_rect.h"
/* Interface from the SDL library into the Android Java activity */
extern SDL_bool Android_JNI_CreateContext(int majorVersion, int minorVersion, int red, int green, int blue, int alpha, int buffer, int depth, int stencil, int buffers, int samples);
extern SDL_bool Android_JNI_DeleteContext(void);
extern void Android_JNI_SwapWindow();
extern void Android_JNI_SetActivityTitle(const char *title);
extern SDL_bool Android_JNI_GetAccelerometerValues(float values[3]);
extern void Android_JNI_ShowTextInput(SDL_Rect *inputRect);
extern void Android_JNI_HideTextInput();
/* Audio support */
extern int Android_JNI_OpenAudioDevice(int sampleRate, int is16Bit, int channelCount, int desiredBufferFrames);
extern void* Android_JNI_GetAudioBuffer();
extern void Android_JNI_WriteAudioBuffer();
extern void Android_JNI_CloseAudioDevice();
#include "SDL_rwops.h"
int Android_JNI_FileOpen(SDL_RWops* ctx, const char* fileName, const char* mode);
Sint64 Android_JNI_FileSize(SDL_RWops* ctx);
Sint64 Android_JNI_FileSeek(SDL_RWops* ctx, Sint64 offset, int whence);
size_t Android_JNI_FileRead(SDL_RWops* ctx, void* buffer, size_t size, size_t maxnum);
size_t Android_JNI_FileWrite(SDL_RWops* ctx, const void* buffer, size_t size, size_t num);
int Android_JNI_FileClose(SDL_RWops* ctx);
/* Clipboard support */
int Android_JNI_SetClipboardText(const char* text);
char* Android_JNI_GetClipboardText();
SDL_bool Android_JNI_HasClipboardText();
/* Power support */
int Android_JNI_GetPowerInfo(int* plugged, int* charged, int* battery, int* seconds, int* percent);
/* Threads */
#include <jni.h>
JNIEnv *Android_JNI_GetEnv(void);
int Android_JNI_SetupThread(void);
/* Generic messages */
int Android_JNI_SendMessage(int command, int param);
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
}
/* *INDENT-ON* */
#endif
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifdef __WIN32__
#include "SDL_error.h"
#include "SDL_windows.h"
#include "SDL_assert.h"
#include <objbase.h> /* for CoInitialize/CoUninitialize */
/* Sets an error message based on GetLastError() */
int
WIN_SetError(const char *prefix)
{
TCHAR buffer[1024];
char *message;
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0,
buffer, SDL_arraysize(buffer), NULL);
message = WIN_StringToUTF8(buffer);
SDL_SetError("%s%s%s", prefix ? prefix : "", prefix ? ": " : "", message);
SDL_free(message);
return -1;
}
HRESULT
WIN_CoInitialize(void)
{
const HRESULT hr = CoInitialize(NULL);
/* S_FALSE means success, but someone else already initialized. */
/* You still need to call CoUninitialize in this case! */
if (hr == S_FALSE) {
return S_OK;
}
return hr;
}
void
WIN_CoUninitialize(void)
{
CoUninitialize();
}
#endif /* __WIN32__ */
/* vi: set ts=4 sw=4 expandtab: */

55
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is an include file for windows.h with the SDL build settings */
#ifndef _INCLUDED_WINDOWS_H
#define _INCLUDED_WINDOWS_H
#define WIN32_LEAN_AND_MEAN
#define STRICT
#ifndef UNICODE
#define UNICODE 1
#endif
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x501 /* Need 0x410 for AlphaBlend() and 0x500 for EnumDisplayDevices(), 0x501 for raw input */
#include <windows.h>
/* Routines to convert from UTF8 to native Windows text */
#if UNICODE
#define WIN_StringToUTF8(S) SDL_iconv_string("UTF-8", "UCS-2-INTERNAL", (char *)(S), (SDL_wcslen(S)+1)*sizeof(WCHAR))
#define WIN_UTF8ToString(S) (WCHAR *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", (char *)(S), SDL_strlen(S)+1)
#else
#define WIN_StringToUTF8(S) SDL_iconv_string("UTF-8", "ASCII", (char *)(S), (SDL_strlen(S)+1))
#define WIN_UTF8ToString(S) SDL_iconv_string("ASCII", "UTF-8", (char *)(S), SDL_strlen(S)+1)
#endif
/* Sets an error message based on GetLastError(). Always return -1. */
extern int WIN_SetError(const char *prefix);
/* Wrap up the oddities of CoInitialize() into a common function. */
extern HRESULT WIN_CoInitialize(void);
extern void WIN_CoUninitialize(void);
#endif /* _INCLUDED_WINDOWS_H */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* CPU feature detection for SDL */
#include "SDL_cpuinfo.h"
#ifdef HAVE_SYSCONF
#include <unistd.h>
#endif
#ifdef HAVE_SYSCTLBYNAME
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
#if defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))
#include <sys/sysctl.h> /* For AltiVec check */
#elif defined(__OpenBSD__) && defined(__powerpc__)
#include <sys/param.h>
#include <sys/sysctl.h> /* For AltiVec check */
#include <machine/cpu.h>
#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
#include <signal.h>
#include <setjmp.h>
#endif
#ifdef __WIN32__
#include "../core/windows/SDL_windows.h"
#endif
#define CPU_HAS_RDTSC 0x00000001
#define CPU_HAS_ALTIVEC 0x00000002
#define CPU_HAS_MMX 0x00000004
#define CPU_HAS_3DNOW 0x00000008
#define CPU_HAS_SSE 0x00000010
#define CPU_HAS_SSE2 0x00000020
#define CPU_HAS_SSE3 0x00000040
#define CPU_HAS_SSE41 0x00000100
#define CPU_HAS_SSE42 0x00000200
#if SDL_ALTIVEC_BLITTERS && HAVE_SETJMP && !__MACOSX__ && !__OpenBSD__
/* This is the brute force way of detecting instruction sets...
the idea is borrowed from the libmpeg2 library - thanks!
*/
static jmp_buf jmpbuf;
static void
illegal_instruction(int sig)
{
longjmp(jmpbuf, 1);
}
#endif /* HAVE_SETJMP */
static __inline__ int
CPU_haveCPUID(void)
{
int has_CPUID = 0;
/* *INDENT-OFF* */
#if defined(__GNUC__) && defined(i386)
__asm__ (
" pushfl # Get original EFLAGS \n"
" popl %%eax \n"
" movl %%eax,%%ecx \n"
" xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n"
" pushl %%eax # Save new EFLAGS value on stack \n"
" popfl # Replace current EFLAGS value \n"
" pushfl # Get new EFLAGS \n"
" popl %%eax # Store new EFLAGS in EAX \n"
" xorl %%ecx,%%eax # Can not toggle ID bit, \n"
" jz 1f # Processor=80486 \n"
" movl $1,%0 # We have CPUID support \n"
"1: \n"
: "=m" (has_CPUID)
:
: "%eax", "%ecx"
);
#elif defined(__GNUC__) && defined(__x86_64__)
/* Technically, if this is being compiled under __x86_64__ then it has
CPUid by definition. But it's nice to be able to prove it. :) */
__asm__ (
" pushfq # Get original EFLAGS \n"
" popq %%rax \n"
" movq %%rax,%%rcx \n"
" xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n"
" pushq %%rax # Save new EFLAGS value on stack \n"
" popfq # Replace current EFLAGS value \n"
" pushfq # Get new EFLAGS \n"
" popq %%rax # Store new EFLAGS in EAX \n"
" xorl %%ecx,%%eax # Can not toggle ID bit, \n"
" jz 1f # Processor=80486 \n"
" movl $1,%0 # We have CPUID support \n"
"1: \n"
: "=m" (has_CPUID)
:
: "%rax", "%rcx"
);
#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
__asm {
pushfd ; Get original EFLAGS
pop eax
mov ecx, eax
xor eax, 200000h ; Flip ID bit in EFLAGS
push eax ; Save new EFLAGS value on stack
popfd ; Replace current EFLAGS value
pushfd ; Get new EFLAGS
pop eax ; Store new EFLAGS in EAX
xor eax, ecx ; Can not toggle ID bit,
jz done ; Processor=80486
mov has_CPUID,1 ; We have CPUID support
done:
}
#elif defined(__sun) && defined(__i386)
__asm (
" pushfl \n"
" popl %eax \n"
" movl %eax,%ecx \n"
" xorl $0x200000,%eax \n"
" pushl %eax \n"
" popfl \n"
" pushfl \n"
" popl %eax \n"
" xorl %ecx,%eax \n"
" jz 1f \n"
" movl $1,-8(%ebp) \n"
"1: \n"
);
#elif defined(__sun) && defined(__amd64)
__asm (
" pushfq \n"
" popq %rax \n"
" movq %rax,%rcx \n"
" xorl $0x200000,%eax \n"
" pushq %rax \n"
" popfq \n"
" pushfq \n"
" popq %rax \n"
" xorl %ecx,%eax \n"
" jz 1f \n"
" movl $1,-8(%rbp) \n"
"1: \n"
);
#endif
/* *INDENT-ON* */
return has_CPUID;
}
#if defined(__GNUC__) && defined(i386)
#define cpuid(func, a, b, c, d) \
__asm__ __volatile__ ( \
" pushl %%ebx \n" \
" cpuid \n" \
" movl %%ebx, %%esi \n" \
" popl %%ebx \n" : \
"=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func))
#elif defined(__GNUC__) && defined(__x86_64__)
#define cpuid(func, a, b, c, d) \
__asm__ __volatile__ ( \
" pushq %%rbx \n" \
" cpuid \n" \
" movq %%rbx, %%rsi \n" \
" popq %%rbx \n" : \
"=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func))
#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
#define cpuid(func, a, b, c, d) \
__asm { \
__asm mov eax, func \
__asm cpuid \
__asm mov a, eax \
__asm mov b, ebx \
__asm mov c, ecx \
__asm mov d, edx \
}
#else
#define cpuid(func, a, b, c, d) \
a = b = c = d = 0
#endif
static __inline__ int
CPU_getCPUIDFeatures(void)
{
int features = 0;
int a, b, c, d;
cpuid(0, a, b, c, d);
if (a >= 1) {
cpuid(1, a, b, c, d);
features = d;
}
return features;
}
static __inline__ int
CPU_haveRDTSC(void)
{
if (CPU_haveCPUID()) {
return (CPU_getCPUIDFeatures() & 0x00000010);
}
return 0;
}
static __inline__ int
CPU_haveAltiVec(void)
{
volatile int altivec = 0;
#if (defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__))
#ifdef __OpenBSD__
int selectors[2] = { CTL_MACHDEP, CPU_ALTIVEC };
#else
int selectors[2] = { CTL_HW, HW_VECTORUNIT };
#endif
int hasVectorUnit = 0;
size_t length = sizeof(hasVectorUnit);
int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0);
if (0 == error)
altivec = (hasVectorUnit != 0);
#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
void (*handler) (int sig);
handler = signal(SIGILL, illegal_instruction);
if (setjmp(jmpbuf) == 0) {
asm volatile ("mtspr 256, %0\n\t" "vand %%v0, %%v0, %%v0"::"r" (-1));
altivec = 1;
}
signal(SIGILL, handler);
#endif
return altivec;
}
static __inline__ int
CPU_haveMMX(void)
{
if (CPU_haveCPUID()) {
return (CPU_getCPUIDFeatures() & 0x00800000);
}
return 0;
}
static __inline__ int
CPU_have3DNow(void)
{
if (CPU_haveCPUID()) {
int a, b, c, d;
cpuid(0x80000000, a, b, c, d);
if (a >= 0x80000001) {
cpuid(0x80000001, a, b, c, d);
return (d & 0x80000000);
}
}
return 0;
}
static __inline__ int
CPU_haveSSE(void)
{
if (CPU_haveCPUID()) {
return (CPU_getCPUIDFeatures() & 0x02000000);
}
return 0;
}
static __inline__ int
CPU_haveSSE2(void)
{
if (CPU_haveCPUID()) {
return (CPU_getCPUIDFeatures() & 0x04000000);
}
return 0;
}
static __inline__ int
CPU_haveSSE3(void)
{
if (CPU_haveCPUID()) {
int a, b, c, d;
cpuid(0, a, b, c, d);
if (a >= 1) {
cpuid(1, a, b, c, d);
return (c & 0x00000001);
}
}
return 0;
}
static __inline__ int
CPU_haveSSE41(void)
{
if (CPU_haveCPUID()) {
int a, b, c, d;
cpuid(1, a, b, c, d);
if (a >= 1) {
cpuid(1, a, b, c, d);
return (c & 0x00080000);
}
}
return 0;
}
static __inline__ int
CPU_haveSSE42(void)
{
if (CPU_haveCPUID()) {
int a, b, c, d;
cpuid(1, a, b, c, d);
if (a >= 1) {
cpuid(1, a, b, c, d);
return (c & 0x00100000);
}
}
return 0;
}
static int SDL_CPUCount = 0;
int
SDL_GetCPUCount(void)
{
if (!SDL_CPUCount) {
#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
if (SDL_CPUCount <= 0) {
SDL_CPUCount = (int)sysconf(_SC_NPROCESSORS_ONLN);
}
#endif
#ifdef HAVE_SYSCTLBYNAME
if (SDL_CPUCount <= 0) {
size_t size = sizeof(SDL_CPUCount);
sysctlbyname("hw.ncpu", &SDL_CPUCount, &size, NULL, 0);
}
#endif
#ifdef __WIN32__
if (SDL_CPUCount <= 0) {
SYSTEM_INFO info;
GetSystemInfo(&info);
SDL_CPUCount = info.dwNumberOfProcessors;
}
#endif
/* There has to be at least 1, right? :) */
if (SDL_CPUCount <= 0) {
SDL_CPUCount = 1;
}
}
return SDL_CPUCount;
}
/* Oh, such a sweet sweet trick, just not very useful. :) */
static const char *
SDL_GetCPUType(void)
{
static char SDL_CPUType[13];
if (!SDL_CPUType[0]) {
int i = 0;
int a, b, c, d;
if (CPU_haveCPUID()) {
cpuid(0x00000000, a, b, c, d);
SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
}
if (!SDL_CPUType[0]) {
SDL_strlcpy(SDL_CPUType, "Unknown", sizeof(SDL_CPUType));
}
}
return SDL_CPUType;
}
#ifdef TEST_MAIN /* !!! FIXME: only used for test at the moment. */
static const char *
SDL_GetCPUName(void)
{
static char SDL_CPUName[48];
if (!SDL_CPUName[0]) {
int i = 0;
int a, b, c, d;
if (CPU_haveCPUID()) {
cpuid(0x80000000, a, b, c, d);
if (a >= 0x80000004) {
cpuid(0x80000002, a, b, c, d);
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
cpuid(0x80000003, a, b, c, d);
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
cpuid(0x80000004, a, b, c, d);
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
}
}
if (!SDL_CPUName[0]) {
SDL_strlcpy(SDL_CPUName, "Unknown", sizeof(SDL_CPUName));
}
}
return SDL_CPUName;
}
#endif
int
SDL_GetCPUCacheLineSize(void)
{
const char *cpuType = SDL_GetCPUType();
if (SDL_strcmp(cpuType, "GenuineIntel") == 0) {
int a, b, c, d;
cpuid(0x00000001, a, b, c, d);
return (((b >> 8) & 0xff) * 8);
} else if (SDL_strcmp(cpuType, "AuthenticAMD") == 0) {
int a, b, c, d;
cpuid(0x80000005, a, b, c, d);
return (c & 0xff);
} else {
/* Just make a guess here... */
return SDL_CACHELINE_SIZE;
}
}
static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
static Uint32
SDL_GetCPUFeatures(void)
{
if (SDL_CPUFeatures == 0xFFFFFFFF) {
SDL_CPUFeatures = 0;
if (CPU_haveRDTSC()) {
SDL_CPUFeatures |= CPU_HAS_RDTSC;
}
if (CPU_haveAltiVec()) {
SDL_CPUFeatures |= CPU_HAS_ALTIVEC;
}
if (CPU_haveMMX()) {
SDL_CPUFeatures |= CPU_HAS_MMX;
}
if (CPU_have3DNow()) {
SDL_CPUFeatures |= CPU_HAS_3DNOW;
}
if (CPU_haveSSE()) {
SDL_CPUFeatures |= CPU_HAS_SSE;
}
if (CPU_haveSSE2()) {
SDL_CPUFeatures |= CPU_HAS_SSE2;
}
if (CPU_haveSSE3()) {
SDL_CPUFeatures |= CPU_HAS_SSE3;
}
if (CPU_haveSSE41()) {
SDL_CPUFeatures |= CPU_HAS_SSE41;
}
if (CPU_haveSSE42()) {
SDL_CPUFeatures |= CPU_HAS_SSE42;
}
}
return SDL_CPUFeatures;
}
SDL_bool
SDL_HasRDTSC(void)
{
if (SDL_GetCPUFeatures() & CPU_HAS_RDTSC) {
return SDL_TRUE;
}
return SDL_FALSE;
}
SDL_bool
SDL_HasAltiVec(void)
{
if (SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC) {
return SDL_TRUE;
}
return SDL_FALSE;
}
SDL_bool
SDL_HasMMX(void)
{
if (SDL_GetCPUFeatures() & CPU_HAS_MMX) {
return SDL_TRUE;
}
return SDL_FALSE;
}
SDL_bool
SDL_Has3DNow(void)
{
if (SDL_GetCPUFeatures() & CPU_HAS_3DNOW) {
return SDL_TRUE;
}
return SDL_FALSE;
}
SDL_bool
SDL_HasSSE(void)
{
if (SDL_GetCPUFeatures() & CPU_HAS_SSE) {
return SDL_TRUE;
}
return SDL_FALSE;
}
SDL_bool
SDL_HasSSE2(void)
{
if (SDL_GetCPUFeatures() & CPU_HAS_SSE2) {
return SDL_TRUE;
}
return SDL_FALSE;
}
SDL_bool
SDL_HasSSE3(void)
{
if (SDL_GetCPUFeatures() & CPU_HAS_SSE3) {
return SDL_TRUE;
}
return SDL_FALSE;
}
SDL_bool
SDL_HasSSE41(void)
{
if (SDL_GetCPUFeatures() & CPU_HAS_SSE41) {
return SDL_TRUE;
}
return SDL_FALSE;
}
SDL_bool
SDL_HasSSE42(void)
{
if (SDL_GetCPUFeatures() & CPU_HAS_SSE42) {
return SDL_TRUE;
}
return SDL_FALSE;
}
#ifdef TEST_MAIN
#include <stdio.h>
int
main()
{
printf("CPU count: %d\n", SDL_GetCPUCount());
printf("CPU type: %s\n", SDL_GetCPUType());
printf("CPU name: %s\n", SDL_GetCPUName());
printf("CacheLine size: %d\n", SDL_GetCPUCacheLineSize());
printf("RDTSC: %d\n", SDL_HasRDTSC());
printf("Altivec: %d\n", SDL_HasAltiVec());
printf("MMX: %d\n", SDL_HasMMX());
printf("3DNow: %d\n", SDL_Has3DNow());
printf("SSE: %d\n", SDL_HasSSE());
printf("SSE2: %d\n", SDL_HasSSE2());
printf("SSE3: %d\n", SDL_HasSSE3());
printf("SSE4.1: %d\n", SDL_HasSSE41());
printf("SSE4.2: %d\n", SDL_HasSSE42());
return 0;
}
#endif /* TEST_MAIN */
/* vi: set ts=4 sw=4 expandtab: */

46
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@@ -0,0 +1,46 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Clipboard event handling code for SDL */
#include "SDL_events.h"
#include "SDL_events_c.h"
#include "SDL_clipboardevents_c.h"
int
SDL_SendClipboardUpdate(void)
{
int posted;
/* Post the event, if desired */
posted = 0;
if (SDL_GetEventState(SDL_CLIPBOARDUPDATE) == SDL_ENABLE) {
SDL_Event event;
event.type = SDL_CLIPBOARDUPDATE;
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
}
/* vi: set ts=4 sw=4 expandtab: */

30
src/events/SDL_clipboardevents_c.h Normal file
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@@ -0,0 +1,30 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_clipboardevents_c_h
#define _SDL_clipboardevents_c_h
extern int SDL_SendClipboardUpdate(void);
#endif /* _SDL_clipboardevents_c_h */
/* vi: set ts=4 sw=4 expandtab: */

46
src/events/SDL_dropevents.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Drag and drop event handling code for SDL */
#include "SDL_events.h"
#include "SDL_events_c.h"
#include "SDL_dropevents_c.h"
int
SDL_SendDropFile(const char *file)
{
int posted;
/* Post the event, if desired */
posted = 0;
if (SDL_GetEventState(SDL_DROPFILE) == SDL_ENABLE) {
SDL_Event event;
event.type = SDL_DROPFILE;
event.drop.file = SDL_strdup(file);
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
}
/* vi: set ts=4 sw=4 expandtab: */

30
src/events/SDL_dropevents_c.h Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_dropevents_c_h
#define _SDL_dropevents_c_h
extern int SDL_SendDropFile(const char *file);
#endif /* _SDL_dropevents_c_h */
/* vi: set ts=4 sw=4 expandtab: */

642
src/events/SDL_events.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* General event handling code for SDL */
#include "SDL.h"
#include "SDL_events.h"
#include "SDL_syswm.h"
#include "SDL_thread.h"
#include "SDL_events_c.h"
#include "../timer/SDL_timer_c.h"
#if !SDL_JOYSTICK_DISABLED
#include "../joystick/SDL_joystick_c.h"
#endif
#include "../video/SDL_sysvideo.h"
/* An arbitrary limit so we don't have unbounded growth */
#define SDL_MAX_QUEUED_EVENTS 65535
/* Public data -- the event filter */
SDL_EventFilter SDL_EventOK = NULL;
void *SDL_EventOKParam;
typedef struct SDL_EventWatcher {
SDL_EventFilter callback;
void *userdata;
struct SDL_EventWatcher *next;
} SDL_EventWatcher;
static SDL_EventWatcher *SDL_event_watchers = NULL;
typedef struct {
Uint32 bits[8];
} SDL_DisabledEventBlock;
static SDL_DisabledEventBlock *SDL_disabled_events[256];
static Uint32 SDL_userevents = SDL_USEREVENT;
/* Private data -- event queue */
typedef struct _SDL_EventEntry
{
SDL_Event event;
SDL_SysWMmsg msg;
struct _SDL_EventEntry *prev;
struct _SDL_EventEntry *next;
} SDL_EventEntry;
typedef struct _SDL_SysWMEntry
{
SDL_SysWMmsg msg;
struct _SDL_SysWMEntry *next;
} SDL_SysWMEntry;
static struct
{
SDL_mutex *lock;
volatile SDL_bool active;
volatile int count;
SDL_EventEntry *head;
SDL_EventEntry *tail;
SDL_EventEntry *free;
SDL_SysWMEntry *wmmsg_used;
SDL_SysWMEntry *wmmsg_free;
} SDL_EventQ = { NULL, SDL_TRUE };
static __inline__ SDL_bool
SDL_ShouldPollJoystick()
{
#if !SDL_JOYSTICK_DISABLED
if ((!SDL_disabled_events[SDL_JOYAXISMOTION >> 8] ||
SDL_JoystickEventState(SDL_QUERY)) &&
SDL_PrivateJoystickNeedsPolling()) {
return SDL_TRUE;
}
#endif
return SDL_FALSE;
}
/* Public functions */
void
SDL_StopEventLoop(void)
{
int i;
SDL_EventEntry *entry;
SDL_SysWMEntry *wmmsg;
if (SDL_EventQ.lock) {
SDL_LockMutex(SDL_EventQ.lock);
}
SDL_EventQ.active = SDL_FALSE;
/* Clean out EventQ */
for (entry = SDL_EventQ.head; entry; ) {
SDL_EventEntry *next = entry->next;
SDL_free(entry);
entry = next;
}
for (entry = SDL_EventQ.free; entry; ) {
SDL_EventEntry *next = entry->next;
SDL_free(entry);
entry = next;
}
for (wmmsg = SDL_EventQ.wmmsg_used; wmmsg; ) {
SDL_SysWMEntry *next = wmmsg->next;
SDL_free(wmmsg);
wmmsg = next;
}
for (wmmsg = SDL_EventQ.wmmsg_free; wmmsg; ) {
SDL_SysWMEntry *next = wmmsg->next;
SDL_free(wmmsg);
wmmsg = next;
}
SDL_EventQ.count = 0;
SDL_EventQ.head = NULL;
SDL_EventQ.tail = NULL;
SDL_EventQ.free = NULL;
SDL_EventQ.wmmsg_used = NULL;
SDL_EventQ.wmmsg_free = NULL;
/* Clear disabled event state */
for (i = 0; i < SDL_arraysize(SDL_disabled_events); ++i) {
if (SDL_disabled_events[i]) {
SDL_free(SDL_disabled_events[i]);
SDL_disabled_events[i] = NULL;
}
}
while (SDL_event_watchers) {
SDL_EventWatcher *tmp = SDL_event_watchers;
SDL_event_watchers = tmp->next;
SDL_free(tmp);
}
SDL_EventOK = NULL;
if (SDL_EventQ.lock) {
SDL_UnlockMutex(SDL_EventQ.lock);
SDL_DestroyMutex(SDL_EventQ.lock);
SDL_EventQ.lock = NULL;
}
}
/* This function (and associated calls) may be called more than once */
int
SDL_StartEventLoop(void)
{
/* We'll leave the event queue alone, since we might have gotten
some important events at launch (like SDL_DROPFILE)
FIXME: Does this introduce any other bugs with events at startup?
*/
/* Create the lock and set ourselves active */
#if !SDL_THREADS_DISABLED
if (!SDL_EventQ.lock) {
SDL_EventQ.lock = SDL_CreateMutex();
}
if (SDL_EventQ.lock == NULL) {
return (-1);
}
#endif /* !SDL_THREADS_DISABLED */
/* Process most event types */
SDL_EventState(SDL_TEXTINPUT, SDL_DISABLE);
SDL_EventState(SDL_TEXTEDITING, SDL_DISABLE);
SDL_EventState(SDL_SYSWMEVENT, SDL_DISABLE);
SDL_EventQ.active = SDL_TRUE;
return (0);
}
/* Add an event to the event queue -- called with the queue locked */
static int
SDL_AddEvent(SDL_Event * event)
{
SDL_EventEntry *entry;
if (SDL_EventQ.count >= SDL_MAX_QUEUED_EVENTS) {
SDL_SetError("Event queue is full (%d events)", SDL_EventQ.count);
return 0;
}
if (SDL_EventQ.free == NULL) {
entry = (SDL_EventEntry *)SDL_malloc(sizeof(*entry));
if (!entry) {
return 0;
}
} else {
entry = SDL_EventQ.free;
SDL_EventQ.free = entry->next;
}
entry->event = *event;
if (event->type == SDL_SYSWMEVENT) {
entry->msg = *event->syswm.msg;
entry->event.syswm.msg = &entry->msg;
}
if (SDL_EventQ.tail) {
SDL_EventQ.tail->next = entry;
entry->prev = SDL_EventQ.tail;
SDL_EventQ.tail = entry;
entry->next = NULL;
} else {
SDL_assert(!SDL_EventQ.head);
SDL_EventQ.head = entry;
SDL_EventQ.tail = entry;
entry->prev = NULL;
entry->next = NULL;
}
++SDL_EventQ.count;
return 1;
}
/* Remove an event from the queue -- called with the queue locked */
static void
SDL_CutEvent(SDL_EventEntry *entry)
{
if (entry->prev) {
entry->prev->next = entry->next;
}
if (entry->next) {
entry->next->prev = entry->prev;
}
if (entry == SDL_EventQ.head) {
SDL_assert(entry->prev == NULL);
SDL_EventQ.head = entry->next;
}
if (entry == SDL_EventQ.tail) {
SDL_assert(entry->next == NULL);
SDL_EventQ.tail = entry->prev;
}
entry->next = SDL_EventQ.free;
SDL_EventQ.free = entry;
SDL_assert(SDL_EventQ.count > 0);
--SDL_EventQ.count;
}
/* Lock the event queue, take a peep at it, and unlock it */
int
SDL_PeepEvents(SDL_Event * events, int numevents, SDL_eventaction action,
Uint32 minType, Uint32 maxType)
{
int i, used;
/* Don't look after we've quit */
if (!SDL_EventQ.active) {
/* We get a few spurious events at shutdown, so don't warn then */
if (action != SDL_ADDEVENT) {
SDL_SetError("The event system has been shut down");
}
return (-1);
}
/* Lock the event queue */
used = 0;
if (!SDL_EventQ.lock || SDL_LockMutex(SDL_EventQ.lock) == 0) {
if (action == SDL_ADDEVENT) {
for (i = 0; i < numevents; ++i) {
used += SDL_AddEvent(&events[i]);
}
} else {
SDL_EventEntry *entry, *next;
SDL_SysWMEntry *wmmsg, *wmmsg_next;
SDL_Event tmpevent;
Uint32 type;
/* If 'events' is NULL, just see if they exist */
if (events == NULL) {
action = SDL_PEEKEVENT;
numevents = 1;
events = &tmpevent;
}
/* Clean out any used wmmsg data
FIXME: Do we want to retain the data for some period of time?
*/
for (wmmsg = SDL_EventQ.wmmsg_used; wmmsg; wmmsg = wmmsg_next) {
wmmsg_next = wmmsg->next;
wmmsg->next = SDL_EventQ.wmmsg_free;
SDL_EventQ.wmmsg_free = wmmsg;
}
SDL_EventQ.wmmsg_used = NULL;
for (entry = SDL_EventQ.head; entry && used < numevents; entry = next) {
next = entry->next;
type = entry->event.type;
if (minType <= type && type <= maxType) {
events[used] = entry->event;
if (entry->event.type == SDL_SYSWMEVENT) {
/* We need to copy the wmmsg somewhere safe.
For now we'll guarantee it's valid at least until
the next call to SDL_PeepEvents()
*/
SDL_SysWMEntry *wmmsg;
if (SDL_EventQ.wmmsg_free) {
wmmsg = SDL_EventQ.wmmsg_free;
SDL_EventQ.wmmsg_free = wmmsg->next;
} else {
wmmsg = (SDL_SysWMEntry *)SDL_malloc(sizeof(*wmmsg));
}
wmmsg->msg = *entry->event.syswm.msg;
wmmsg->next = SDL_EventQ.wmmsg_used;
SDL_EventQ.wmmsg_used = wmmsg;
events[used].syswm.msg = &wmmsg->msg;
}
++used;
if (action == SDL_GETEVENT) {
SDL_CutEvent(entry);
}
}
}
}
SDL_UnlockMutex(SDL_EventQ.lock);
} else {
return SDL_SetError("Couldn't lock event queue");
}
return (used);
}
SDL_bool
SDL_HasEvent(Uint32 type)
{
return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, type, type) > 0);
}
SDL_bool
SDL_HasEvents(Uint32 minType, Uint32 maxType)
{
return (SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, minType, maxType) > 0);
}
void
SDL_FlushEvent(Uint32 type)
{
SDL_FlushEvents(type, type);
}
void
SDL_FlushEvents(Uint32 minType, Uint32 maxType)
{
/* Don't look after we've quit */
if (!SDL_EventQ.active) {
return;
}
/* Make sure the events are current */
#if 0
/* Actually, we can't do this since we might be flushing while processing
a resize event, and calling this might trigger further resize events.
*/
SDL_PumpEvents();
#endif
/* Lock the event queue */
if (SDL_LockMutex(SDL_EventQ.lock) == 0) {
SDL_EventEntry *entry, *next;
Uint32 type;
for (entry = SDL_EventQ.head; entry; entry = next) {
next = entry->next;
type = entry->event.type;
if (minType <= type && type <= maxType) {
SDL_CutEvent(entry);
}
}
SDL_UnlockMutex(SDL_EventQ.lock);
}
}
/* Run the system dependent event loops */
void
SDL_PumpEvents(void)
{
SDL_VideoDevice *_this = SDL_GetVideoDevice();
/* Get events from the video subsystem */
if (_this) {
_this->PumpEvents(_this);
}
#if !SDL_JOYSTICK_DISABLED
/* Check for joystick state change */
if (SDL_ShouldPollJoystick()) {
SDL_JoystickUpdate();
}
#endif
}
/* Public functions */
int
SDL_PollEvent(SDL_Event * event)
{
return SDL_WaitEventTimeout(event, 0);
}
int
SDL_WaitEvent(SDL_Event * event)
{
return SDL_WaitEventTimeout(event, -1);
}
int
SDL_WaitEventTimeout(SDL_Event * event, int timeout)
{
Uint32 expiration = 0;
if (timeout > 0)
expiration = SDL_GetTicks() + timeout;
for (;;) {
SDL_PumpEvents();
switch (SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
case -1:
return 0;
case 1:
return 1;
case 0:
if (timeout == 0) {
/* Polling and no events, just return */
return 0;
}
if (timeout > 0 && ((int) (SDL_GetTicks() - expiration) >= 0)) {
/* Timeout expired and no events */
return 0;
}
SDL_Delay(10);
break;
}
}
}
int
SDL_PushEvent(SDL_Event * event)
{
SDL_EventWatcher *curr;
event->common.timestamp = SDL_GetTicks();
if (SDL_EventOK && !SDL_EventOK(SDL_EventOKParam, event)) {
return 0;
}
for (curr = SDL_event_watchers; curr; curr = curr->next) {
curr->callback(curr->userdata, event);
}
if (SDL_PeepEvents(event, 1, SDL_ADDEVENT, 0, 0) <= 0) {
return -1;
}
SDL_GestureProcessEvent(event);
return 1;
}
void
SDL_SetEventFilter(SDL_EventFilter filter, void *userdata)
{
/* Set filter and discard pending events */
SDL_EventOK = NULL;
SDL_FlushEvents(SDL_FIRSTEVENT, SDL_LASTEVENT);
SDL_EventOKParam = userdata;
SDL_EventOK = filter;
}
SDL_bool
SDL_GetEventFilter(SDL_EventFilter * filter, void **userdata)
{
if (filter) {
*filter = SDL_EventOK;
}
if (userdata) {
*userdata = SDL_EventOKParam;
}
return SDL_EventOK ? SDL_TRUE : SDL_FALSE;
}
/* FIXME: This is not thread-safe yet */
void
SDL_AddEventWatch(SDL_EventFilter filter, void *userdata)
{
SDL_EventWatcher *watcher;
watcher = (SDL_EventWatcher *)SDL_malloc(sizeof(*watcher));
if (!watcher) {
/* Uh oh... */
return;
}
watcher->callback = filter;
watcher->userdata = userdata;
watcher->next = SDL_event_watchers;
SDL_event_watchers = watcher;
}
/* FIXME: This is not thread-safe yet */
void
SDL_DelEventWatch(SDL_EventFilter filter, void *userdata)
{
SDL_EventWatcher *prev = NULL;
SDL_EventWatcher *curr;
for (curr = SDL_event_watchers; curr; prev = curr, curr = curr->next) {
if (curr->callback == filter && curr->userdata == userdata) {
if (prev) {
prev->next = curr->next;
} else {
SDL_event_watchers = curr->next;
}
SDL_free(curr);
break;
}
}
}
void
SDL_FilterEvents(SDL_EventFilter filter, void *userdata)
{
if (SDL_LockMutex(SDL_EventQ.lock) == 0) {
SDL_EventEntry *entry, *next;
for (entry = SDL_EventQ.head; entry; entry = next) {
next = entry->next;
if (!filter(userdata, &entry->event)) {
SDL_CutEvent(entry);
}
}
SDL_UnlockMutex(SDL_EventQ.lock);
}
}
Uint8
SDL_EventState(Uint32 type, int state)
{
Uint8 current_state;
Uint8 hi = ((type >> 8) & 0xff);
Uint8 lo = (type & 0xff);
if (SDL_disabled_events[hi] &&
(SDL_disabled_events[hi]->bits[lo/32] & (1 << (lo&31)))) {
current_state = SDL_DISABLE;
} else {
current_state = SDL_ENABLE;
}
if (state != current_state)
{
switch (state) {
case SDL_DISABLE:
/* Disable this event type and discard pending events */
if (!SDL_disabled_events[hi]) {
SDL_disabled_events[hi] = (SDL_DisabledEventBlock*) SDL_calloc(1, sizeof(SDL_DisabledEventBlock));
if (!SDL_disabled_events[hi]) {
/* Out of memory, nothing we can do... */
break;
}
}
SDL_disabled_events[hi]->bits[lo/32] |= (1 << (lo&31));
SDL_FlushEvent(type);
break;
case SDL_ENABLE:
SDL_disabled_events[hi]->bits[lo/32] &= ~(1 << (lo&31));
break;
default:
/* Querying state... */
break;
}
}
return current_state;
}
Uint32
SDL_RegisterEvents(int numevents)
{
Uint32 event_base;
if ((numevents > 0) && (SDL_userevents+numevents <= SDL_LASTEVENT)) {
event_base = SDL_userevents;
SDL_userevents += numevents;
} else {
event_base = (Uint32)-1;
}
return event_base;
}
int
SDL_SendAppEvent(SDL_EventType eventType)
{
int posted;
posted = 0;
if (SDL_GetEventState(eventType) == SDL_ENABLE) {
SDL_Event event;
event.type = eventType;
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
}
int
SDL_SendSysWMEvent(SDL_SysWMmsg * message)
{
int posted;
posted = 0;
if (SDL_GetEventState(SDL_SYSWMEVENT) == SDL_ENABLE) {
SDL_Event event;
SDL_memset(&event, 0, sizeof(event));
event.type = SDL_SYSWMEVENT;
event.syswm.msg = message;
posted = (SDL_PushEvent(&event) > 0);
}
/* Update internal event state */
return (posted);
}
/* vi: set ts=4 sw=4 expandtab: */

50
src/events/SDL_events_c.h Normal file
View File

@@ -0,0 +1,50 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Useful functions and variables from SDL_events.c */
#include "SDL_events.h"
#include "SDL_thread.h"
#include "SDL_clipboardevents_c.h"
#include "SDL_dropevents_c.h"
#include "SDL_gesture_c.h"
#include "SDL_keyboard_c.h"
#include "SDL_mouse_c.h"
#include "SDL_touch_c.h"
#include "SDL_windowevents_c.h"
/* Start and stop the event processing loop */
extern int SDL_StartEventLoop(void);
extern void SDL_StopEventLoop(void);
extern void SDL_QuitInterrupt(void);
extern int SDL_SendAppEvent(SDL_EventType eventType);
extern int SDL_SendSysWMEvent(SDL_SysWMmsg * message);
extern int SDL_QuitInit(void);
extern int SDL_SendQuit(void);
extern void SDL_QuitQuit(void);
/* The event filter function */
extern SDL_EventFilter SDL_EventOK;
extern void *SDL_EventOKParam;
/* vi: set ts=4 sw=4 expandtab: */

646
src/events/SDL_gesture.c Normal file
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@@ -0,0 +1,646 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* General mouse handling code for SDL */
#include "SDL_events.h"
#include "SDL_events_c.h"
#include "SDL_gesture_c.h"
#if !defined(__PSP__)
#include <memory.h>
#endif
#include <string.h>
#include <stdio.h>
#include <math.h>
/* TODO: Replace with malloc */
#define MAXPATHSIZE 1024
#define DOLLARNPOINTS 64
#define DOLLARSIZE 256
#define ENABLE_DOLLAR
#define PHI 0.618033989
typedef struct {
float x,y;
} SDL_FloatPoint;
typedef struct {
float length;
int numPoints;
SDL_FloatPoint p[MAXPATHSIZE];
} SDL_DollarPath;
typedef struct {
SDL_FloatPoint path[DOLLARNPOINTS];
unsigned long hash;
} SDL_DollarTemplate;
typedef struct {
SDL_TouchID id;
SDL_FloatPoint centroid;
SDL_DollarPath dollarPath;
Uint16 numDownFingers;
int numDollarTemplates;
SDL_DollarTemplate *dollarTemplate;
SDL_bool recording;
} SDL_GestureTouch;
SDL_GestureTouch *SDL_gestureTouch;
int SDL_numGestureTouches = 0;
SDL_bool recordAll;
#if 0
static void PrintPath(SDL_FloatPoint *path)
{
int i;
printf("Path:");
for (i=0; i<DOLLARNPOINTS; i++) {
printf(" (%f,%f)",path[i].x,path[i].y);
}
printf("\n");
}
#endif
int SDL_RecordGesture(SDL_TouchID touchId)
{
int i;
if (touchId < 0) recordAll = SDL_TRUE;
for (i = 0; i < SDL_numGestureTouches; i++) {
if ((touchId < 0) || (SDL_gestureTouch[i].id == touchId)) {
SDL_gestureTouch[i].recording = SDL_TRUE;
if (touchId >= 0)
return 1;
}
}
return (touchId < 0);
}
static unsigned long SDL_HashDollar(SDL_FloatPoint* points)
{
unsigned long hash = 5381;
int i;
for (i = 0; i < DOLLARNPOINTS; i++) {
hash = ((hash<<5) + hash) + (unsigned long)points[i].x;
hash = ((hash<<5) + hash) + (unsigned long)points[i].y;
}
return hash;
}
static int SaveTemplate(SDL_DollarTemplate *templ, SDL_RWops * src)
{
if (src == NULL) return 0;
//No Longer storing the Hash, rehash on load
//if(SDL_RWops.write(src,&(templ->hash),sizeof(templ->hash),1) != 1) return 0;
if (SDL_RWwrite(src,templ->path,
sizeof(templ->path[0]),DOLLARNPOINTS) != DOLLARNPOINTS)
return 0;
return 1;
}
int SDL_SaveAllDollarTemplates(SDL_RWops *src)
{
int i,j,rtrn = 0;
for (i = 0; i < SDL_numGestureTouches; i++) {
SDL_GestureTouch* touch = &SDL_gestureTouch[i];
for (j = 0; j < touch->numDollarTemplates; j++) {
rtrn += SaveTemplate(&touch->dollarTemplate[i],src);
}
}
return rtrn;
}
int SDL_SaveDollarTemplate(SDL_GestureID gestureId, SDL_RWops *src)
{
int i,j;
for (i = 0; i < SDL_numGestureTouches; i++) {
SDL_GestureTouch* touch = &SDL_gestureTouch[i];
for (j = 0; j < touch->numDollarTemplates; j++) {
if (touch->dollarTemplate[i].hash == gestureId) {
return SaveTemplate(&touch->dollarTemplate[i],src);
}
}
}
return SDL_SetError("Unknown gestureId");
}
//path is an already sampled set of points
//Returns the index of the gesture on success, or -1
static int SDL_AddDollarGesture_one(SDL_GestureTouch* inTouch, SDL_FloatPoint* path)
{
SDL_DollarTemplate* dollarTemplate;
SDL_DollarTemplate *templ;
int index;
index = inTouch->numDollarTemplates;
dollarTemplate =
(SDL_DollarTemplate *)SDL_realloc(inTouch->dollarTemplate,
(index + 1) *
sizeof(SDL_DollarTemplate));
if (!dollarTemplate) {
return SDL_OutOfMemory();
}
inTouch->dollarTemplate = dollarTemplate;
templ = &inTouch->dollarTemplate[index];
SDL_memcpy(templ->path, path, DOLLARNPOINTS*sizeof(SDL_FloatPoint));
templ->hash = SDL_HashDollar(templ->path);
inTouch->numDollarTemplates++;
return index;
}
static int SDL_AddDollarGesture(SDL_GestureTouch* inTouch, SDL_FloatPoint* path)
{
int index = -1;
int i = 0;
if (inTouch == NULL) {
if (SDL_numGestureTouches == 0) return -1;
for (i = 0; i < SDL_numGestureTouches; i++) {
inTouch = &SDL_gestureTouch[i];
index = SDL_AddDollarGesture_one(inTouch, path);
if (index < 0)
return -1;
}
// Use the index of the last one added.
return index;
} else {
return SDL_AddDollarGesture_one(inTouch, path);
}
return -1;
}
int SDL_LoadDollarTemplates(SDL_TouchID touchId, SDL_RWops *src)
{
int i,loaded = 0;
SDL_GestureTouch *touch = NULL;
if (src == NULL) return 0;
if (touchId >= 0) {
for (i = 0; i < SDL_numGestureTouches; i++)
if (SDL_gestureTouch[i].id == touchId)
touch = &SDL_gestureTouch[i];
if (touch == NULL) return -1;
}
while (1) {
SDL_DollarTemplate templ;
if (SDL_RWread(src,templ.path,sizeof(templ.path[0]),DOLLARNPOINTS) <
DOLLARNPOINTS) break;
if (touchId >= 0) {
//printf("Adding loaded gesture to 1 touch\n");
if (SDL_AddDollarGesture(touch, templ.path) >= 0)
loaded++;
}
else {
//printf("Adding to: %i touches\n",SDL_numGestureTouches);
for (i = 0; i < SDL_numGestureTouches; i++) {
touch = &SDL_gestureTouch[i];
//printf("Adding loaded gesture to + touches\n");
//TODO: What if this fails?
SDL_AddDollarGesture(touch,templ.path);
}
loaded++;
}
}
return loaded;
}
static float dollarDifference(SDL_FloatPoint* points,SDL_FloatPoint* templ,float ang)
{
// SDL_FloatPoint p[DOLLARNPOINTS];
float dist = 0;
SDL_FloatPoint p;
int i;
for (i = 0; i < DOLLARNPOINTS; i++) {
p.x = (float)(points[i].x * SDL_cos(ang) - points[i].y * SDL_sin(ang));
p.y = (float)(points[i].x * SDL_sin(ang) + points[i].y * SDL_cos(ang));
dist += (float)(SDL_sqrt((p.x-templ[i].x)*(p.x-templ[i].x)+
(p.y-templ[i].y)*(p.y-templ[i].y)));
}
return dist/DOLLARNPOINTS;
}
static float bestDollarDifference(SDL_FloatPoint* points,SDL_FloatPoint* templ)
{
//------------BEGIN DOLLAR BLACKBOX----------------//
//-TRANSLATED DIRECTLY FROM PSUDEO-CODE AVAILABLE AT-//
//-"http://depts.washington.edu/aimgroup/proj/dollar/"-//
double ta = -M_PI/4;
double tb = M_PI/4;
double dt = M_PI/90;
float x1 = (float)(PHI*ta + (1-PHI)*tb);
float f1 = dollarDifference(points,templ,x1);
float x2 = (float)((1-PHI)*ta + PHI*tb);
float f2 = dollarDifference(points,templ,x2);
while (SDL_fabs(ta-tb) > dt) {
if (f1 < f2) {
tb = x2;
x2 = x1;
f2 = f1;
x1 = (float)(PHI*ta + (1-PHI)*tb);
f1 = dollarDifference(points,templ,x1);
}
else {
ta = x1;
x1 = x2;
f1 = f2;
x2 = (float)((1-PHI)*ta + PHI*tb);
f2 = dollarDifference(points,templ,x2);
}
}
/*
if (f1 <= f2)
printf("Min angle (x1): %f\n",x1);
else if (f1 > f2)
printf("Min angle (x2): %f\n",x2);
*/
return SDL_min(f1,f2);
}
//DollarPath contains raw points, plus (possibly) the calculated length
static int dollarNormalize(const SDL_DollarPath *path,SDL_FloatPoint *points)
{
int i;
float interval;
float dist;
int numPoints = 0;
SDL_FloatPoint centroid;
float xmin,xmax,ymin,ymax;
float ang;
float w,h;
float length = path->length;
//Calculate length if it hasn't already been done
if (length <= 0) {
for (i=1;i < path->numPoints; i++) {
float dx = path->p[i ].x - path->p[i-1].x;
float dy = path->p[i ].y - path->p[i-1].y;
length += (float)(SDL_sqrt(dx*dx+dy*dy));
}
}
//Resample
interval = length/(DOLLARNPOINTS - 1);
dist = interval;
centroid.x = 0;centroid.y = 0;
//printf("(%f,%f)\n",path->p[path->numPoints-1].x,path->p[path->numPoints-1].y);
for (i = 1; i < path->numPoints; i++) {
float d = (float)(SDL_sqrt((path->p[i-1].x-path->p[i].x)*(path->p[i-1].x-path->p[i].x)+
(path->p[i-1].y-path->p[i].y)*(path->p[i-1].y-path->p[i].y)));
//printf("d = %f dist = %f/%f\n",d,dist,interval);
while (dist + d > interval) {
points[numPoints].x = path->p[i-1].x +
((interval-dist)/d)*(path->p[i].x-path->p[i-1].x);
points[numPoints].y = path->p[i-1].y +
((interval-dist)/d)*(path->p[i].y-path->p[i-1].y);
centroid.x += points[numPoints].x;
centroid.y += points[numPoints].y;
numPoints++;
dist -= interval;
}
dist += d;
}
if (numPoints < DOLLARNPOINTS-1) {
SDL_SetError("ERROR: NumPoints = %i\n",numPoints);
return 0;
}
//copy the last point
points[DOLLARNPOINTS-1] = path->p[path->numPoints-1];
numPoints = DOLLARNPOINTS;
centroid.x /= numPoints;
centroid.y /= numPoints;
//printf("Centroid (%f,%f)",centroid.x,centroid.y);
//Rotate Points so point 0 is left of centroid and solve for the bounding box
xmin = centroid.x;
xmax = centroid.x;
ymin = centroid.y;
ymax = centroid.y;
ang = (float)(SDL_atan2(centroid.y - points[0].y,
centroid.x - points[0].x));
for (i = 0; i<numPoints; i++) {
float px = points[i].x;
float py = points[i].y;
points[i].x = (float)((px - centroid.x)*SDL_cos(ang) -
(py - centroid.y)*SDL_sin(ang) + centroid.x);
points[i].y = (float)((px - centroid.x)*SDL_sin(ang) +
(py - centroid.y)*SDL_cos(ang) + centroid.y);
if (points[i].x < xmin) xmin = points[i].x;
if (points[i].x > xmax) xmax = points[i].x;
if (points[i].y < ymin) ymin = points[i].y;
if (points[i].y > ymax) ymax = points[i].y;
}
//Scale points to DOLLARSIZE, and translate to the origin
w = xmax-xmin;
h = ymax-ymin;
for (i=0; i<numPoints; i++) {
points[i].x = (points[i].x - centroid.x)*DOLLARSIZE/w;
points[i].y = (points[i].y - centroid.y)*DOLLARSIZE/h;
}
return numPoints;
}
static float dollarRecognize(const SDL_DollarPath *path,int *bestTempl,SDL_GestureTouch* touch)
{
SDL_FloatPoint points[DOLLARNPOINTS];
int i;
float bestDiff = 10000;
SDL_memset(points, 0, sizeof(points));
dollarNormalize(path,points);
//PrintPath(points);
*bestTempl = -1;
for (i = 0; i < touch->numDollarTemplates; i++) {
float diff = bestDollarDifference(points,touch->dollarTemplate[i].path);
if (diff < bestDiff) {bestDiff = diff; *bestTempl = i;}
}
return bestDiff;
}
int SDL_GestureAddTouch(SDL_TouchID touchId)
{
SDL_GestureTouch *gestureTouch = (SDL_GestureTouch *)SDL_realloc(SDL_gestureTouch,
(SDL_numGestureTouches + 1) *
sizeof(SDL_GestureTouch));
if (!gestureTouch) {
return SDL_OutOfMemory();
}
SDL_gestureTouch = gestureTouch;
SDL_gestureTouch[SDL_numGestureTouches].numDownFingers = 0;
SDL_gestureTouch[SDL_numGestureTouches].id = touchId;
SDL_gestureTouch[SDL_numGestureTouches].numDollarTemplates = 0;
SDL_gestureTouch[SDL_numGestureTouches].recording = SDL_FALSE;
SDL_numGestureTouches++;
return 0;
}
static SDL_GestureTouch * SDL_GetGestureTouch(SDL_TouchID id)
{
int i;
for (i = 0; i < SDL_numGestureTouches; i++) {
//printf("%i ?= %i\n",SDL_gestureTouch[i].id,id);
if (SDL_gestureTouch[i].id == id)
return &SDL_gestureTouch[i];
}
return NULL;
}
int SDL_SendGestureMulti(SDL_GestureTouch* touch,float dTheta,float dDist)
{
SDL_Event event;
event.mgesture.type = SDL_MULTIGESTURE;
event.mgesture.touchId = touch->id;
event.mgesture.x = touch->centroid.x;
event.mgesture.y = touch->centroid.y;
event.mgesture.dTheta = dTheta;
event.mgesture.dDist = dDist;
event.mgesture.numFingers = touch->numDownFingers;
return SDL_PushEvent(&event) > 0;
}
static int SDL_SendGestureDollar(SDL_GestureTouch* touch,
SDL_GestureID gestureId,float error)
{
SDL_Event event;
event.dgesture.type = SDL_DOLLARGESTURE;
event.dgesture.touchId = touch->id;
event.mgesture.x = touch->centroid.x;
event.mgesture.y = touch->centroid.y;
event.dgesture.gestureId = gestureId;
event.dgesture.error = error;
//A finger came up to trigger this event.
event.dgesture.numFingers = touch->numDownFingers + 1;
return SDL_PushEvent(&event) > 0;
}
static int SDL_SendDollarRecord(SDL_GestureTouch* touch,SDL_GestureID gestureId)
{
SDL_Event event;
event.dgesture.type = SDL_DOLLARRECORD;
event.dgesture.touchId = touch->id;
event.dgesture.gestureId = gestureId;
return SDL_PushEvent(&event) > 0;
}
void SDL_GestureProcessEvent(SDL_Event* event)
{
float x,y;
SDL_FloatPoint path[DOLLARNPOINTS];
int index;
int i;
float pathDx, pathDy;
SDL_FloatPoint lastP;
SDL_FloatPoint lastCentroid;
float lDist;
float Dist;
float dtheta;
float dDist;
if (event->type == SDL_FINGERMOTION ||
event->type == SDL_FINGERDOWN ||
event->type == SDL_FINGERUP) {
SDL_GestureTouch* inTouch = SDL_GetGestureTouch(event->tfinger.touchId);
//Shouldn't be possible
if (inTouch == NULL) return;
x = event->tfinger.x;
y = event->tfinger.y;
//Finger Up
if (event->type == SDL_FINGERUP) {
inTouch->numDownFingers--;
#ifdef ENABLE_DOLLAR
if (inTouch->recording) {
inTouch->recording = SDL_FALSE;
dollarNormalize(&inTouch->dollarPath,path);
//PrintPath(path);
if (recordAll) {
index = SDL_AddDollarGesture(NULL,path);
for (i = 0; i < SDL_numGestureTouches; i++)
SDL_gestureTouch[i].recording = SDL_FALSE;
}
else {
index = SDL_AddDollarGesture(inTouch,path);
}
if (index >= 0) {
SDL_SendDollarRecord(inTouch,inTouch->dollarTemplate[index].hash);
}
else {
SDL_SendDollarRecord(inTouch,-1);
}
}
else {
int bestTempl;
float error;
error = dollarRecognize(&inTouch->dollarPath,
&bestTempl,inTouch);
if (bestTempl >= 0){
//Send Event
unsigned long gestureId = inTouch->dollarTemplate[bestTempl].hash;
SDL_SendGestureDollar(inTouch,gestureId,error);
//printf ("%s\n",);("Dollar error: %f\n",error);
}
}
#endif
//inTouch->gestureLast[j] = inTouch->gestureLast[inTouch->numDownFingers];
if (inTouch->numDownFingers > 0) {
inTouch->centroid.x = (inTouch->centroid.x*(inTouch->numDownFingers+1)-
x)/inTouch->numDownFingers;
inTouch->centroid.y = (inTouch->centroid.y*(inTouch->numDownFingers+1)-
y)/inTouch->numDownFingers;
}
}
else if (event->type == SDL_FINGERMOTION) {
float dx = event->tfinger.dx;
float dy = event->tfinger.dy;
#ifdef ENABLE_DOLLAR
SDL_DollarPath* path = &inTouch->dollarPath;
if (path->numPoints < MAXPATHSIZE) {
path->p[path->numPoints].x = inTouch->centroid.x;
path->p[path->numPoints].y = inTouch->centroid.y;
pathDx =
(path->p[path->numPoints].x-path->p[path->numPoints-1].x);
pathDy =
(path->p[path->numPoints].y-path->p[path->numPoints-1].y);
path->length += (float)SDL_sqrt(pathDx*pathDx + pathDy*pathDy);
path->numPoints++;
}
#endif
lastP.x = x - dx;
lastP.y = y - dy;
lastCentroid = inTouch->centroid;
inTouch->centroid.x += dx/inTouch->numDownFingers;
inTouch->centroid.y += dy/inTouch->numDownFingers;
//printf("Centrid : (%f,%f)\n",inTouch->centroid.x,inTouch->centroid.y);
if (inTouch->numDownFingers > 1) {
SDL_FloatPoint lv; //Vector from centroid to last x,y position
SDL_FloatPoint v; //Vector from centroid to current x,y position
//lv = inTouch->gestureLast[j].cv;
lv.x = lastP.x - lastCentroid.x;
lv.y = lastP.y - lastCentroid.y;
lDist = (float)SDL_sqrt(lv.x*lv.x + lv.y*lv.y);
//printf("lDist = %f\n",lDist);
v.x = x - inTouch->centroid.x;
v.y = y - inTouch->centroid.y;
//inTouch->gestureLast[j].cv = v;
Dist = (float)SDL_sqrt(v.x*v.x+v.y*v.y);
// SDL_cos(dTheta) = (v . lv)/(|v| * |lv|)
//Normalize Vectors to simplify angle calculation
lv.x/=lDist;
lv.y/=lDist;
v.x/=Dist;
v.y/=Dist;
dtheta = (float)SDL_atan2(lv.x*v.y - lv.y*v.x,lv.x*v.x + lv.y*v.y);
dDist = (Dist - lDist);
if (lDist == 0) {dDist = 0;dtheta = 0;} //To avoid impossible values
//inTouch->gestureLast[j].dDist = dDist;
//inTouch->gestureLast[j].dtheta = dtheta;
//printf("dDist = %f, dTheta = %f\n",dDist,dtheta);
//gdtheta = gdtheta*.9 + dtheta*.1;
//gdDist = gdDist*.9 + dDist*.1
//knob.r += dDist/numDownFingers;
//knob.ang += dtheta;
//printf("thetaSum = %f, distSum = %f\n",gdtheta,gdDist);
//printf("id: %i dTheta = %f, dDist = %f\n",j,dtheta,dDist);
SDL_SendGestureMulti(inTouch,dtheta,dDist);
}
else {
//inTouch->gestureLast[j].dDist = 0;
//inTouch->gestureLast[j].dtheta = 0;
//inTouch->gestureLast[j].cv.x = 0;
//inTouch->gestureLast[j].cv.y = 0;
}
//inTouch->gestureLast[j].f.p.x = x;
//inTouch->gestureLast[j].f.p.y = y;
//break;
//pressure?
}
if (event->type == SDL_FINGERDOWN) {
inTouch->numDownFingers++;
inTouch->centroid.x = (inTouch->centroid.x*(inTouch->numDownFingers - 1)+
x)/inTouch->numDownFingers;
inTouch->centroid.y = (inTouch->centroid.y*(inTouch->numDownFingers - 1)+
y)/inTouch->numDownFingers;
//printf("Finger Down: (%f,%f). Centroid: (%f,%f\n",x,y,
// inTouch->centroid.x,inTouch->centroid.y);
#ifdef ENABLE_DOLLAR
inTouch->dollarPath.length = 0;
inTouch->dollarPath.p[0].x = x;
inTouch->dollarPath.p[0].y = y;
inTouch->dollarPath.numPoints = 1;
#endif
}
}
}
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_gesture_c_h
#define _SDL_gesture_c_h
extern int SDL_GestureAddTouch(SDL_TouchID touchId);
extern void SDL_GestureProcessEvent(SDL_Event* event);
extern int SDL_RecordGesture(SDL_TouchID touchId);
#endif /* _SDL_gesture_c_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_keyboard_c_h
#define _SDL_keyboard_c_h
#include "SDL_keycode.h"
#include "SDL_events.h"
/* Initialize the keyboard subsystem */
extern int SDL_KeyboardInit(void);
/* Clear the state of the keyboard */
extern void SDL_ResetKeyboard(void);
/* Get the default keymap */
extern void SDL_GetDefaultKeymap(SDL_Keycode * keymap);
/* Set the mapping of scancode to key codes */
extern void SDL_SetKeymap(int start, SDL_Keycode * keys, int length);
/* Set a platform-dependent key name, overriding the default platform-agnostic
name. Encoded as UTF-8. The string is not copied, thus the pointer given to
this function must stay valid forever (or at least until the call to
VideoQuit()). */
extern void SDL_SetScancodeName(SDL_Scancode scancode, const char *name);
/* Set the keyboard focus window */
extern void SDL_SetKeyboardFocus(SDL_Window * window);
/* Send a keyboard key event */
extern int SDL_SendKeyboardKey(Uint8 state, SDL_Scancode scancode);
/* Send keyboard text input */
extern int SDL_SendKeyboardText(const char *text);
/* Send editing text for selected range from start to end */
extern int SDL_SendEditingText(const char *text, int start, int end);
/* Shutdown the keyboard subsystem */
extern void SDL_KeyboardQuit(void);
#endif /* _SDL_keyboard_c_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* General mouse handling code for SDL */
#include "SDL_assert.h"
#include "SDL_events.h"
#include "SDL_events_c.h"
#include "default_cursor.h"
#include "../video/SDL_sysvideo.h"
/*#define DEBUG_MOUSE*/
/* The mouse state */
static SDL_Mouse SDL_mouse;
static int
SDL_PrivateSendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y);
/* Public functions */
int
SDL_MouseInit(void)
{
SDL_Mouse *mouse = SDL_GetMouse();
mouse->cursor_shown = SDL_TRUE;
return (0);
}
void
SDL_SetDefaultCursor(SDL_Cursor * cursor)
{
SDL_Mouse *mouse = SDL_GetMouse();
mouse->def_cursor = cursor;
if (!mouse->cur_cursor) {
SDL_SetCursor(cursor);
}
}
SDL_Mouse *
SDL_GetMouse(void)
{
return &SDL_mouse;
}
SDL_Window *
SDL_GetMouseFocus(void)
{
SDL_Mouse *mouse = SDL_GetMouse();
return mouse->focus;
}
void
SDL_ResetMouse(void)
{
SDL_Mouse *mouse = SDL_GetMouse();
Uint8 i;
#ifdef DEBUG_MOUSE
printf("Resetting mouse\n");
#endif
for (i = 1; i <= sizeof(mouse->buttonstate)*8; ++i) {
if (mouse->buttonstate & SDL_BUTTON(i)) {
SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_RELEASED, i);
}
}
SDL_assert(mouse->buttonstate == 0);
}
void
SDL_SetMouseFocus(SDL_Window * window)
{
SDL_Mouse *mouse = SDL_GetMouse();
if (mouse->focus == window) {
return;
}
/* Actually, this ends up being a bad idea, because most operating
systems have an implicit grab when you press the mouse button down
so you can drag things out of the window and then get the mouse up
when it happens. So, #if 0...
*/
#if 0
if (mouse->focus && !window) {
/* We won't get anymore mouse messages, so reset mouse state */
SDL_ResetMouse();
}
#endif
/* See if the current window has lost focus */
if (mouse->focus) {
SDL_SendWindowEvent(mouse->focus, SDL_WINDOWEVENT_LEAVE, 0, 0);
}
mouse->focus = window;
if (mouse->focus) {
SDL_SendWindowEvent(mouse->focus, SDL_WINDOWEVENT_ENTER, 0, 0);
}
/* Update cursor visibility */
SDL_SetCursor(NULL);
}
/* Check to see if we need to synthesize focus events */
static SDL_bool
SDL_UpdateMouseFocus(SDL_Window * window, int x, int y, Uint32 buttonstate)
{
SDL_Mouse *mouse = SDL_GetMouse();
int w, h;
SDL_bool inWindow;
SDL_GetWindowSize(window, &w, &h);
if (x < 0 || y < 0 || x >= w || y >= h) {
inWindow = SDL_FALSE;
} else {
inWindow = SDL_TRUE;
}
/* Linux doesn't give you mouse events outside your window unless you grab
the pointer.
Windows doesn't give you mouse events outside your window unless you call
SetCapture().
Both of these are slightly scary changes, so for now we'll punt and if the
mouse leaves the window you'll lose mouse focus and reset button state.
*/
#ifdef SUPPORT_DRAG_OUTSIDE_WINDOW
if (!inWindow && !buttonstate) {
#else
if (!inWindow) {
#endif
if (window == mouse->focus) {
#ifdef DEBUG_MOUSE
printf("Mouse left window, synthesizing move & focus lost event\n");
#endif
SDL_PrivateSendMouseMotion(window, mouse->mouseID, 0, x, y);
SDL_SetMouseFocus(NULL);
}
return SDL_FALSE;
}
if (window != mouse->focus) {
#ifdef DEBUG_MOUSE
printf("Mouse entered window, synthesizing focus gain & move event\n");
#endif
SDL_SetMouseFocus(window);
SDL_PrivateSendMouseMotion(window, mouse->mouseID, 0, x, y);
}
return SDL_TRUE;
}
int
SDL_SendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y)
{
if (window && !relative) {
SDL_Mouse *mouse = SDL_GetMouse();
if (!SDL_UpdateMouseFocus(window, x, y, mouse->buttonstate)) {
return 0;
}
}
return SDL_PrivateSendMouseMotion(window, mouseID, relative, x, y);
}
static int
SDL_PrivateSendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y)
{
SDL_Mouse *mouse = SDL_GetMouse();
int posted;
int xrel;
int yrel;
int x_max = 0, y_max = 0;
/* relative motion is calculated regarding the system cursor last position */
if (relative) {
xrel = x;
yrel = y;
x = (mouse->last_x + x);
y = (mouse->last_y + y);
} else {
xrel = x - mouse->last_x;
yrel = y - mouse->last_y;
}
/* Drop events that don't change state */
if (!xrel && !yrel) {
#ifdef DEBUG_MOUSE
printf("Mouse event didn't change state - dropped!\n");
#endif
return 0;
}
/* Update internal mouse coordinates */
if (mouse->relative_mode == SDL_FALSE) {
mouse->x = x;
mouse->y = y;
} else {
mouse->x += xrel;
mouse->y += yrel;
}
SDL_GetWindowSize(mouse->focus, &x_max, &y_max);
--x_max;
--y_max;
/* make sure that the pointers find themselves inside the windows */
if (mouse->x > x_max) {
mouse->x = x_max;
}
if (mouse->x < 0) {
mouse->x = 0;
}
if (mouse->y > y_max) {
mouse->y = y_max;
}
if (mouse->y < 0) {
mouse->y = 0;
}
mouse->xdelta += xrel;
mouse->ydelta += yrel;
#if 0 /* FIXME */
/* Move the mouse cursor, if needed */
if (mouse->cursor_shown && !mouse->relative_mode &&
mouse->MoveCursor && mouse->cur_cursor) {
mouse->MoveCursor(mouse->cur_cursor);
}
#endif
/* Post the event, if desired */
posted = 0;
if (SDL_GetEventState(SDL_MOUSEMOTION) == SDL_ENABLE) {
SDL_Event event;
event.motion.type = SDL_MOUSEMOTION;
event.motion.windowID = mouse->focus ? mouse->focus->id : 0;
event.motion.which = mouseID;
event.motion.state = mouse->buttonstate;
event.motion.x = mouse->x;
event.motion.y = mouse->y;
event.motion.xrel = xrel;
event.motion.yrel = yrel;
posted = (SDL_PushEvent(&event) > 0);
}
/* Use unclamped values if we're getting events outside the window */
mouse->last_x = x;
mouse->last_y = y;
return posted;
}
int
SDL_SendMouseButton(SDL_Window * window, SDL_MouseID mouseID, Uint8 state, Uint8 button)
{
SDL_Mouse *mouse = SDL_GetMouse();
int posted;
Uint32 type;
Uint32 buttonstate = mouse->buttonstate;
/* Figure out which event to perform */
switch (state) {
case SDL_PRESSED:
type = SDL_MOUSEBUTTONDOWN;
buttonstate |= SDL_BUTTON(button);
break;
case SDL_RELEASED:
type = SDL_MOUSEBUTTONUP;
buttonstate &= ~SDL_BUTTON(button);
break;
default:
/* Invalid state -- bail */
return 0;
}
/* We do this after calculating buttonstate so button presses gain focus */
if (window && state == SDL_PRESSED) {
SDL_UpdateMouseFocus(window, mouse->x, mouse->y, buttonstate);
}
if (buttonstate == mouse->buttonstate) {
/* Ignore this event, no state change */
return 0;
}
mouse->buttonstate = buttonstate;
/* Post the event, if desired */
posted = 0;
if (SDL_GetEventState(type) == SDL_ENABLE) {
SDL_Event event;
event.type = type;
event.button.windowID = mouse->focus ? mouse->focus->id : 0;
event.button.which = mouseID;
event.button.state = state;
event.button.button = button;
event.button.x = mouse->x;
event.button.y = mouse->y;
posted = (SDL_PushEvent(&event) > 0);
}
/* We do this after dispatching event so button releases can lose focus */
if (window && state == SDL_RELEASED) {
SDL_UpdateMouseFocus(window, mouse->x, mouse->y, buttonstate);
}
return posted;
}
int
SDL_SendMouseWheel(SDL_Window * window, SDL_MouseID mouseID, int x, int y)
{
SDL_Mouse *mouse = SDL_GetMouse();
int posted;
if (window) {
SDL_SetMouseFocus(window);
}
if (!x && !y) {
return 0;
}
/* Post the event, if desired */
posted = 0;
if (SDL_GetEventState(SDL_MOUSEWHEEL) == SDL_ENABLE) {
SDL_Event event;
event.type = SDL_MOUSEWHEEL;
event.wheel.windowID = mouse->focus ? mouse->focus->id : 0;
event.wheel.which = mouseID;
event.wheel.x = x;
event.wheel.y = y;
posted = (SDL_PushEvent(&event) > 0);
}
return posted;
}
void
SDL_MouseQuit(void)
{
SDL_Cursor *cursor, *next;
SDL_Mouse *mouse = SDL_GetMouse();
SDL_ShowCursor(1);
cursor = mouse->cursors;
while (cursor) {
next = cursor->next;
SDL_FreeCursor(cursor);
cursor = next;
}
if (mouse->def_cursor && mouse->FreeCursor) {
mouse->FreeCursor(mouse->def_cursor);
}
SDL_zerop(mouse);
}
Uint32
SDL_GetMouseState(int *x, int *y)
{
SDL_Mouse *mouse = SDL_GetMouse();
if (x) {
*x = mouse->x;
}
if (y) {
*y = mouse->y;
}
return mouse->buttonstate;
}
Uint32
SDL_GetRelativeMouseState(int *x, int *y)
{
SDL_Mouse *mouse = SDL_GetMouse();
if (x) {
*x = mouse->xdelta;
}
if (y) {
*y = mouse->ydelta;
}
mouse->xdelta = 0;
mouse->ydelta = 0;
return mouse->buttonstate;
}
void
SDL_WarpMouseInWindow(SDL_Window * window, int x, int y)
{
SDL_Mouse *mouse = SDL_GetMouse();
if ( window == NULL )
window = mouse->focus;
if ( window == NULL )
return;
if (mouse->WarpMouse) {
mouse->WarpMouse(window, x, y);
} else {
SDL_SendMouseMotion(window, mouse->mouseID, 0, x, y);
}
}
int
SDL_SetRelativeMouseMode(SDL_bool enabled)
{
SDL_Mouse *mouse = SDL_GetMouse();
SDL_Window *focusWindow = SDL_GetKeyboardFocus();
int original_x = mouse->x, original_y = mouse->y;
if (enabled == mouse->relative_mode) {
return 0;
}
if (!mouse->SetRelativeMouseMode) {
return SDL_Unsupported();
}
if (enabled && focusWindow) {
/* Center it in the focused window to prevent clicks from going through
* to background windows.
*/
SDL_SetMouseFocus(focusWindow);
SDL_WarpMouseInWindow(focusWindow, focusWindow->w/2, focusWindow->h/2);
}
if (mouse->SetRelativeMouseMode(enabled) < 0) {
return -1;
}
/* Set the relative mode */
mouse->relative_mode = enabled;
if (enabled) {
/* Save the expected mouse position */
mouse->original_x = original_x;
mouse->original_y = original_y;
} else if (mouse->focus) {
/* Restore the expected mouse position */
SDL_WarpMouseInWindow(mouse->focus, mouse->original_x, mouse->original_y);
}
/* Flush pending mouse motion */
SDL_FlushEvent(SDL_MOUSEMOTION);
/* Update cursor visibility */
SDL_SetCursor(NULL);
return 0;
}
SDL_bool
SDL_GetRelativeMouseMode()
{
SDL_Mouse *mouse = SDL_GetMouse();
return mouse->relative_mode;
}
SDL_Cursor *
SDL_CreateCursor(const Uint8 * data, const Uint8 * mask,
int w, int h, int hot_x, int hot_y)
{
SDL_Surface *surface;
SDL_Cursor *cursor;
int x, y;
Uint32 *pixel;
Uint8 datab = 0, maskb = 0;
const Uint32 black = 0xFF000000;
const Uint32 white = 0xFFFFFFFF;
const Uint32 transparent = 0x00000000;
/* Make sure the width is a multiple of 8 */
w = ((w + 7) & ~7);
/* Create the surface from a bitmap */
surface = SDL_CreateRGBSurface(0, w, h, 32,
0x00FF0000,
0x0000FF00,
0x000000FF,
0xFF000000);
if (!surface) {
return NULL;
}
for (y = 0; y < h; ++y) {
pixel = (Uint32 *) ((Uint8 *) surface->pixels + y * surface->pitch);
for (x = 0; x < w; ++x) {
if ((x % 8) == 0) {
datab = *data++;
maskb = *mask++;
}
if (maskb & 0x80) {
*pixel++ = (datab & 0x80) ? black : white;
} else {
*pixel++ = (datab & 0x80) ? black : transparent;
}
datab <<= 1;
maskb <<= 1;
}
}
cursor = SDL_CreateColorCursor(surface, hot_x, hot_y);
SDL_FreeSurface(surface);
return cursor;
}
SDL_Cursor *
SDL_CreateColorCursor(SDL_Surface *surface, int hot_x, int hot_y)
{
SDL_Mouse *mouse = SDL_GetMouse();
SDL_Surface *temp = NULL;
SDL_Cursor *cursor;
if (!surface) {
SDL_SetError("Passed NULL cursor surface");
return NULL;
}
if (!mouse->CreateCursor) {
SDL_SetError("Cursors are not currently supported");
return NULL;
}
/* Sanity check the hot spot */
if ((hot_x < 0) || (hot_y < 0) ||
(hot_x >= surface->w) || (hot_y >= surface->h)) {
SDL_SetError("Cursor hot spot doesn't lie within cursor");
return NULL;
}
if (surface->format->format != SDL_PIXELFORMAT_ARGB8888) {
temp = SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_ARGB8888, 0);
if (!temp) {
return NULL;
}
surface = temp;
}
cursor = mouse->CreateCursor(surface, hot_x, hot_y);
if (cursor) {
cursor->next = mouse->cursors;
mouse->cursors = cursor;
}
if (temp) {
SDL_FreeSurface(temp);
}
return cursor;
}
SDL_Cursor *
SDL_CreateSystemCursor(SDL_SystemCursor id)
{
SDL_Mouse *mouse = SDL_GetMouse();
SDL_Cursor *cursor;
if (!mouse->CreateSystemCursor) {
SDL_SetError("CreateSystemCursor is not currently supported");
return NULL;
}
cursor = mouse->CreateSystemCursor(id);
if (cursor) {
cursor->next = mouse->cursors;
mouse->cursors = cursor;
}
return cursor;
}
/* SDL_SetCursor(NULL) can be used to force the cursor redraw,
if this is desired for any reason. This is used when setting
the video mode and when the SDL window gains the mouse focus.
*/
void
SDL_SetCursor(SDL_Cursor * cursor)
{
SDL_Mouse *mouse = SDL_GetMouse();
/* Set the new cursor */
if (cursor) {
/* Make sure the cursor is still valid for this mouse */
if (cursor != mouse->def_cursor) {
SDL_Cursor *found;
for (found = mouse->cursors; found; found = found->next) {
if (found == cursor) {
break;
}
}
if (!found) {
SDL_SetError("Cursor not associated with the current mouse");
return;
}
}
mouse->cur_cursor = cursor;
} else {
if (mouse->focus) {
cursor = mouse->cur_cursor;
} else {
cursor = mouse->def_cursor;
}
}
if (cursor && mouse->cursor_shown && !mouse->relative_mode) {
if (mouse->ShowCursor) {
mouse->ShowCursor(cursor);
}
} else {
if (mouse->ShowCursor) {
mouse->ShowCursor(NULL);
}
}
}
SDL_Cursor *
SDL_GetCursor(void)
{
SDL_Mouse *mouse = SDL_GetMouse();
if (!mouse) {
return NULL;
}
return mouse->cur_cursor;
}
SDL_Cursor *
SDL_GetDefaultCursor(void)
{
SDL_Mouse *mouse = SDL_GetMouse();
if (!mouse) {
return NULL;
}
return mouse->def_cursor;
}
void
SDL_FreeCursor(SDL_Cursor * cursor)
{
SDL_Mouse *mouse = SDL_GetMouse();
SDL_Cursor *curr, *prev;
if (!cursor) {
return;
}
if (cursor == mouse->def_cursor) {
return;
}
if (cursor == mouse->cur_cursor) {
SDL_SetCursor(mouse->def_cursor);
}
for (prev = NULL, curr = mouse->cursors; curr;
prev = curr, curr = curr->next) {
if (curr == cursor) {
if (prev) {
prev->next = curr->next;
} else {
mouse->cursors = curr->next;
}
if (mouse->FreeCursor) {
mouse->FreeCursor(curr);
}
return;
}
}
}
int
SDL_ShowCursor(int toggle)
{
SDL_Mouse *mouse = SDL_GetMouse();
SDL_bool shown;
if (!mouse) {
return 0;
}
shown = mouse->cursor_shown;
if (toggle >= 0) {
if (toggle) {
mouse->cursor_shown = SDL_TRUE;
} else {
mouse->cursor_shown = SDL_FALSE;
}
if (mouse->cursor_shown != shown) {
SDL_SetCursor(NULL);
}
}
return shown;
}
/* vi: set ts=4 sw=4 expandtab: */

108
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_mouse_c_h
#define _SDL_mouse_c_h
#include "SDL_mouse.h"
typedef Uint32 SDL_MouseID;
struct SDL_Cursor
{
struct SDL_Cursor *next;
void *driverdata;
};
typedef struct
{
/* Create a cursor from a surface */
SDL_Cursor *(*CreateCursor) (SDL_Surface * surface, int hot_x, int hot_y);
/* Create a system cursor */
SDL_Cursor *(*CreateSystemCursor) (SDL_SystemCursor id);
/* Show the specified cursor, or hide if cursor is NULL */
int (*ShowCursor) (SDL_Cursor * cursor);
/* This is called when a mouse motion event occurs */
void (*MoveCursor) (SDL_Cursor * cursor);
/* Free a window manager cursor */
void (*FreeCursor) (SDL_Cursor * cursor);
/* Warp the mouse to (x,y) */
void (*WarpMouse) (SDL_Window * window, int x, int y);
/* Set relative mode */
int (*SetRelativeMouseMode) (SDL_bool enabled);
/* Data common to all mice */
SDL_MouseID mouseID;
SDL_Window *focus;
int x;
int y;
int xdelta;
int ydelta;
int last_x, last_y; /* the last reported x and y coordinates */
Uint32 buttonstate;
SDL_bool relative_mode;
/* the x and y coordinates when relative mode was activated */
int original_x, original_y;
SDL_Cursor *cursors;
SDL_Cursor *def_cursor;
SDL_Cursor *cur_cursor;
SDL_bool cursor_shown;
/* Driver-dependent data. */
void *driverdata;
} SDL_Mouse;
/* Initialize the mouse subsystem */
extern int SDL_MouseInit(void);
/* Get the mouse state structure */
SDL_Mouse *SDL_GetMouse(void);
/* Set the default mouse cursor */
extern void SDL_SetDefaultCursor(SDL_Cursor * cursor);
/* Set the mouse focus window */
extern void SDL_SetMouseFocus(SDL_Window * window);
/* Send a mouse motion event */
extern int SDL_SendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relative, int x, int y);
/* Send a mouse button event */
extern int SDL_SendMouseButton(SDL_Window * window, SDL_MouseID mouseID, Uint8 state, Uint8 button);
/* Send a mouse wheel event */
extern int SDL_SendMouseWheel(SDL_Window * window, SDL_MouseID mouseID, int x, int y);
/* Shutdown the mouse subsystem */
extern void SDL_MouseQuit(void);
#endif /* _SDL_mouse_c_h */
/* vi: set ts=4 sw=4 expandtab: */

120
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* General quit handling code for SDL */
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include "SDL_events.h"
#include "SDL_events_c.h"
#ifdef HAVE_SIGNAL_H
static void
SDL_HandleSIG(int sig)
{
/* Reset the signal handler */
signal(sig, SDL_HandleSIG);
/* Signal a quit interrupt */
SDL_SendQuit();
}
#endif /* HAVE_SIGNAL_H */
/* Public functions */
int
SDL_QuitInit(void)
{
#ifdef HAVE_SIGACTION
struct sigaction action;
sigaction(SIGINT, NULL, &action);
#ifdef HAVE_SA_SIGACTION
if ( action.sa_handler == SIG_DFL && action.sa_sigaction == (void*)SIG_DFL ) {
#else
if ( action.sa_handler == SIG_DFL ) {
#endif
action.sa_handler = SDL_HandleSIG;
sigaction(SIGINT, &action, NULL);
}
sigaction(SIGTERM, NULL, &action);
#ifdef HAVE_SA_SIGACTION
if ( action.sa_handler == SIG_DFL && action.sa_sigaction == (void*)SIG_DFL ) {
#else
if ( action.sa_handler == SIG_DFL ) {
#endif
action.sa_handler = SDL_HandleSIG;
sigaction(SIGTERM, &action, NULL);
}
#elif HAVE_SIGNAL_H
void (*ohandler) (int);
/* Both SIGINT and SIGTERM are translated into quit interrupts */
ohandler = signal(SIGINT, SDL_HandleSIG);
if (ohandler != SIG_DFL)
signal(SIGINT, ohandler);
ohandler = signal(SIGTERM, SDL_HandleSIG);
if (ohandler != SIG_DFL)
signal(SIGTERM, ohandler);
#endif /* HAVE_SIGNAL_H */
/* That's it! */
return (0);
}
void
SDL_QuitQuit(void)
{
#ifdef HAVE_SIGACTION
struct sigaction action;
sigaction(SIGINT, NULL, &action);
if ( action.sa_handler == SDL_HandleSIG ) {
action.sa_handler = SIG_DFL;
sigaction(SIGINT, &action, NULL);
}
sigaction(SIGTERM, NULL, &action);
if ( action.sa_handler == SDL_HandleSIG ) {
action.sa_handler = SIG_DFL;
sigaction(SIGTERM, &action, NULL);
}
#elif HAVE_SIGNAL_H
void (*ohandler) (int);
ohandler = signal(SIGINT, SIG_DFL);
if (ohandler != SDL_HandleSIG)
signal(SIGINT, ohandler);
ohandler = signal(SIGTERM, SIG_DFL);
if (ohandler != SDL_HandleSIG)
signal(SIGTERM, ohandler);
#endif /* HAVE_SIGNAL_H */
}
/* This function returns 1 if it's okay to close the application window */
int
SDL_SendQuit(void)
{
return SDL_SendAppEvent(SDL_QUIT);
}
/* vi: set ts=4 sw=4 expandtab: */

36
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "../video/SDL_sysvideo.h"
/* Useful functions and variables from SDL_sysevents.c */
#if defined(__BEOS__) || defined(__HAIKU__)
/* The Be and Haiku event loops run in a separate thread */
#define MUST_THREAD_EVENTS
#endif
#ifdef __WIN32__ /* Windows doesn't allow a separate event thread */
#define CANT_THREAD_EVENTS
#endif
/* vi: set ts=4 sw=4 expandtab: */

364
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* General touch handling code for SDL */
#include "SDL_assert.h"
#include "SDL_events.h"
#include "SDL_events_c.h"
static int SDL_num_touch = 0;
static SDL_Touch **SDL_touchDevices = NULL;
/* Public functions */
int
SDL_TouchInit(void)
{
return (0);
}
int
SDL_GetNumTouchDevices(void)
{
return SDL_num_touch;
}
SDL_TouchID
SDL_GetTouchDevice(int index)
{
if (index < 0 || index >= SDL_num_touch) {
SDL_SetError("Unknown touch device");
return 0;
}
return SDL_touchDevices[index]->id;
}
static int
SDL_GetTouchIndex(SDL_TouchID id)
{
int index;
SDL_Touch *touch;
for (index = 0; index < SDL_num_touch; ++index) {
touch = SDL_touchDevices[index];
if (touch->id == id) {
return index;
}
}
return -1;
}
SDL_Touch *
SDL_GetTouch(SDL_TouchID id)
{
int index = SDL_GetTouchIndex(id);
if (index < 0 || index >= SDL_num_touch) {
SDL_SetError("Unknown touch device");
return NULL;
}
return SDL_touchDevices[index];
}
static int
SDL_GetFingerIndex(const SDL_Touch * touch, SDL_FingerID fingerid)
{
int index;
for (index = 0; index < touch->num_fingers; ++index) {
if (touch->fingers[index]->id == fingerid) {
return index;
}
}
return -1;
}
SDL_Finger *
SDL_GetFinger(const SDL_Touch * touch, SDL_FingerID id)
{
int index = SDL_GetFingerIndex(touch, id);
if (index < 0 || index >= touch->num_fingers) {
return NULL;
}
return touch->fingers[index];
}
int
SDL_GetNumTouchFingers(SDL_TouchID touchID)
{
SDL_Touch *touch = SDL_GetTouch(touchID);
if (touch) {
return touch->num_fingers;
}
return 0;
}
SDL_Finger *
SDL_GetTouchFinger(SDL_TouchID touchID, int index)
{
SDL_Touch *touch = SDL_GetTouch(touchID);
if (!touch) {
return NULL;
}
if (index < 0 || index >= touch->num_fingers) {
SDL_SetError("Unknown touch finger");
return NULL;
}
return touch->fingers[index];
}
int
SDL_AddTouch(SDL_TouchID touchID, const char *name)
{
SDL_Touch **touchDevices;
int index;
index = SDL_GetTouchIndex(touchID);
if (index >= 0) {
return index;
}
/* Add the touch to the list of touch */
touchDevices = (SDL_Touch **) SDL_realloc(SDL_touchDevices,
(SDL_num_touch + 1) * sizeof(*touchDevices));
if (!touchDevices) {
return SDL_OutOfMemory();
}
SDL_touchDevices = touchDevices;
index = SDL_num_touch++;
SDL_touchDevices[index] = (SDL_Touch *) SDL_malloc(sizeof(*SDL_touchDevices[index]));
if (!SDL_touchDevices[index]) {
return SDL_OutOfMemory();
}
/* we're setting the touch properties */
SDL_touchDevices[index]->id = touchID;
SDL_touchDevices[index]->num_fingers = 0;
SDL_touchDevices[index]->max_fingers = 0;
SDL_touchDevices[index]->fingers = NULL;
/* Record this touch device for gestures */
/* We could do this on the fly in the gesture code if we wanted */
SDL_GestureAddTouch(touchID);
return index;
}
static int
SDL_AddFinger(SDL_Touch *touch, SDL_FingerID fingerid, float x, float y, float pressure)
{
SDL_Finger *finger;
if (touch->num_fingers == touch->max_fingers) {
SDL_Finger **new_fingers;
new_fingers = (SDL_Finger **)SDL_realloc(touch->fingers, (touch->max_fingers+1)*sizeof(*touch->fingers));
if (!new_fingers) {
return SDL_OutOfMemory();
}
touch->fingers = new_fingers;
touch->fingers[touch->max_fingers] = (SDL_Finger *)SDL_malloc(sizeof(*finger));
if (!touch->fingers[touch->max_fingers]) {
return SDL_OutOfMemory();
}
touch->max_fingers++;
}
finger = touch->fingers[touch->num_fingers++];
finger->id = fingerid;
finger->x = x;
finger->y = y;
finger->pressure = pressure;
return 0;
}
static int
SDL_DelFinger(SDL_Touch* touch, SDL_FingerID fingerid)
{
SDL_Finger *temp;
int index = SDL_GetFingerIndex(touch, fingerid);
if (index < 0) {
return -1;
}
touch->num_fingers--;
temp = touch->fingers[index];
touch->fingers[index] = touch->fingers[touch->num_fingers];
touch->fingers[touch->num_fingers] = temp;
return 0;
}
int
SDL_SendTouch(SDL_TouchID id, SDL_FingerID fingerid,
SDL_bool down, float x, float y, float pressure)
{
int posted;
SDL_Finger *finger;
SDL_Touch* touch = SDL_GetTouch(id);
if (!touch) {
return -1;
}
finger = SDL_GetFinger(touch, fingerid);
if (down) {
if (finger) {
/* This finger is already down */
return 0;
}
if (SDL_AddFinger(touch, fingerid, x, y, pressure) < 0) {
return 0;
}
posted = 0;
if (SDL_GetEventState(SDL_FINGERDOWN) == SDL_ENABLE) {
SDL_Event event;
event.tfinger.type = SDL_FINGERDOWN;
event.tfinger.touchId = id;
event.tfinger.fingerId = fingerid;
event.tfinger.x = x;
event.tfinger.y = y;
event.tfinger.dx = 0;
event.tfinger.dy = 0;
event.tfinger.pressure = pressure;
posted = (SDL_PushEvent(&event) > 0);
}
} else {
if (!finger) {
/* This finger is already up */
return 0;
}
posted = 0;
if (SDL_GetEventState(SDL_FINGERUP) == SDL_ENABLE) {
SDL_Event event;
event.tfinger.type = SDL_FINGERUP;
event.tfinger.touchId = id;
event.tfinger.fingerId = fingerid;
/* I don't trust the coordinates passed on fingerUp */
event.tfinger.x = finger->x;
event.tfinger.y = finger->y;
event.tfinger.dx = 0;
event.tfinger.dy = 0;
event.tfinger.pressure = pressure;
posted = (SDL_PushEvent(&event) > 0);
}
SDL_DelFinger(touch, fingerid);
}
return posted;
}
int
SDL_SendTouchMotion(SDL_TouchID id, SDL_FingerID fingerid,
float x, float y, float pressure)
{
SDL_Touch *touch;
SDL_Finger *finger;
int posted;
float xrel, yrel, prel;
touch = SDL_GetTouch(id);
if (!touch) {
return -1;
}
finger = SDL_GetFinger(touch,fingerid);
if (!finger) {
return SDL_SendTouch(id, fingerid, SDL_TRUE, x, y, pressure);
}
xrel = x - finger->x;
yrel = y - finger->y;
prel = pressure - finger->pressure;
/* Drop events that don't change state */
if (!xrel && !yrel && !prel) {
#if 0
printf("Touch event didn't change state - dropped!\n");
#endif
return 0;
}
/* Update internal touch coordinates */
finger->x = x;
finger->y = y;
finger->pressure = pressure;
/* Post the event, if desired */
posted = 0;
if (SDL_GetEventState(SDL_FINGERMOTION) == SDL_ENABLE) {
SDL_Event event;
event.tfinger.type = SDL_FINGERMOTION;
event.tfinger.touchId = id;
event.tfinger.fingerId = fingerid;
event.tfinger.x = x;
event.tfinger.y = y;
event.tfinger.dx = xrel;
event.tfinger.dy = yrel;
event.tfinger.pressure = pressure;
posted = (SDL_PushEvent(&event) > 0);
}
return posted;
}
void
SDL_DelTouch(SDL_TouchID id)
{
int i;
int index = SDL_GetTouchIndex(id);
SDL_Touch *touch = SDL_GetTouch(id);
if (!touch) {
return;
}
for (i = 0; i < touch->max_fingers; ++i) {
SDL_free(touch->fingers[i]);
}
SDL_free(touch->fingers);
SDL_free(touch);
SDL_num_touch--;
SDL_touchDevices[index] = SDL_touchDevices[SDL_num_touch];
}
void
SDL_TouchQuit(void)
{
int i;
for (i = SDL_num_touch; i--; ) {
SDL_DelTouch(SDL_touchDevices[i]->id);
}
SDL_assert(SDL_num_touch == 0);
if (SDL_touchDevices) {
SDL_free(SDL_touchDevices);
SDL_touchDevices = NULL;
}
}
/* vi: set ts=4 sw=4 expandtab: */

61
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "../../include/SDL_touch.h"
#ifndef _SDL_touch_c_h
#define _SDL_touch_c_h
typedef struct SDL_Touch
{
SDL_TouchID id;
int num_fingers;
int max_fingers;
SDL_Finger** fingers;
} SDL_Touch;
/* Initialize the touch subsystem */
extern int SDL_TouchInit(void);
/* Add a touch, returning the index of the touch, or -1 if there was an error. */
extern int SDL_AddTouch(SDL_TouchID id, const char *name);
/* Get the touch with a given id */
extern SDL_Touch *SDL_GetTouch(SDL_TouchID id);
/* Send a touch down/up event for a touch */
extern int SDL_SendTouch(SDL_TouchID id, SDL_FingerID fingerid,
SDL_bool down, float x, float y, float pressure);
/* Send a touch motion event for a touch */
extern int SDL_SendTouchMotion(SDL_TouchID id, SDL_FingerID fingerid,
float x, float y, float pressure);
/* Remove a touch */
extern void SDL_DelTouch(SDL_TouchID id);
/* Shutdown the touch subsystem */
extern void SDL_TouchQuit(void);
#endif /* _SDL_touch_c_h */
/* vi: set ts=4 sw=4 expandtab: */

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
/* Window event handling code for SDL */
#include "SDL_events.h"
#include "SDL_events_c.h"
#include "SDL_mouse_c.h"
#include "../video/SDL_sysvideo.h"
static int
RemovePendingResizedEvents(void * userdata, SDL_Event *event)
{
SDL_Event *new_event = (SDL_Event *)userdata;
if (event->type == SDL_WINDOWEVENT &&
event->window.event == SDL_WINDOWEVENT_RESIZED &&
event->window.windowID == new_event->window.windowID) {
/* We're about to post a new size event, drop the old one */
return 0;
}
return 1;
}
static int
RemovePendingSizeChangedEvents(void * userdata, SDL_Event *event)
{
SDL_Event *new_event = (SDL_Event *)userdata;
if (event->type == SDL_WINDOWEVENT &&
event->window.event == SDL_WINDOWEVENT_SIZE_CHANGED &&
event->window.windowID == new_event->window.windowID) {
/* We're about to post a new size event, drop the old one */
return 0;
}
return 1;
}
static int
RemovePendingMoveEvents(void * userdata, SDL_Event *event)
{
SDL_Event *new_event = (SDL_Event *)userdata;
if (event->type == SDL_WINDOWEVENT &&
event->window.event == SDL_WINDOWEVENT_MOVED &&
event->window.windowID == new_event->window.windowID) {
/* We're about to post a new move event, drop the old one */
return 0;
}
return 1;
}
int
SDL_SendWindowEvent(SDL_Window * window, Uint8 windowevent, int data1,
int data2)
{
int posted;
if (!window) {
return 0;
}
switch (windowevent) {
case SDL_WINDOWEVENT_SHOWN:
if (window->flags & SDL_WINDOW_SHOWN) {
return 0;
}
window->flags &= ~SDL_WINDOW_HIDDEN;
window->flags |= SDL_WINDOW_SHOWN;
SDL_OnWindowShown(window);
break;
case SDL_WINDOWEVENT_HIDDEN:
if (!(window->flags & SDL_WINDOW_SHOWN)) {
return 0;
}
window->flags &= ~SDL_WINDOW_SHOWN;
window->flags |= SDL_WINDOW_HIDDEN;
SDL_OnWindowHidden(window);
break;
case SDL_WINDOWEVENT_MOVED:
if (SDL_WINDOWPOS_ISUNDEFINED(data1) ||
SDL_WINDOWPOS_ISUNDEFINED(data2)) {
return 0;
}
if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
window->windowed.x = data1;
window->windowed.y = data2;
}
if (data1 == window->x && data2 == window->y) {
return 0;
}
window->x = data1;
window->y = data2;
break;
case SDL_WINDOWEVENT_RESIZED:
if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
window->windowed.w = data1;
window->windowed.h = data2;
}
if (data1 == window->w && data2 == window->h) {
return 0;
}
window->w = data1;
window->h = data2;
SDL_OnWindowResized(window);
break;
case SDL_WINDOWEVENT_MINIMIZED:
if (window->flags & SDL_WINDOW_MINIMIZED) {
return 0;
}
window->flags |= SDL_WINDOW_MINIMIZED;
SDL_OnWindowMinimized(window);
break;
case SDL_WINDOWEVENT_MAXIMIZED:
if (window->flags & SDL_WINDOW_MAXIMIZED) {
return 0;
}
window->flags |= SDL_WINDOW_MAXIMIZED;
break;
case SDL_WINDOWEVENT_RESTORED:
if (!(window->flags & (SDL_WINDOW_MINIMIZED | SDL_WINDOW_MAXIMIZED))) {
return 0;
}
window->flags &= ~(SDL_WINDOW_MINIMIZED | SDL_WINDOW_MAXIMIZED);
SDL_OnWindowRestored(window);
break;
case SDL_WINDOWEVENT_ENTER:
if (window->flags & SDL_WINDOW_MOUSE_FOCUS) {
return 0;
}
window->flags |= SDL_WINDOW_MOUSE_FOCUS;
SDL_OnWindowEnter(window);
break;
case SDL_WINDOWEVENT_LEAVE:
if (!(window->flags & SDL_WINDOW_MOUSE_FOCUS)) {
return 0;
}
window->flags &= ~SDL_WINDOW_MOUSE_FOCUS;
SDL_OnWindowLeave(window);
break;
case SDL_WINDOWEVENT_FOCUS_GAINED:
if (window->flags & SDL_WINDOW_INPUT_FOCUS) {
return 0;
}
window->flags |= SDL_WINDOW_INPUT_FOCUS;
SDL_OnWindowFocusGained(window);
break;
case SDL_WINDOWEVENT_FOCUS_LOST:
if (!(window->flags & SDL_WINDOW_INPUT_FOCUS)) {
return 0;
}
window->flags &= ~SDL_WINDOW_INPUT_FOCUS;
SDL_OnWindowFocusLost(window);
break;
}
/* Post the event, if desired */
posted = 0;
if (SDL_GetEventState(SDL_WINDOWEVENT) == SDL_ENABLE) {
SDL_Event event;
event.type = SDL_WINDOWEVENT;
event.window.event = windowevent;
event.window.data1 = data1;
event.window.data2 = data2;
event.window.windowID = window->id;
/* Fixes queue overflow with resize events that aren't processed */
if (windowevent == SDL_WINDOWEVENT_RESIZED) {
SDL_FilterEvents(RemovePendingResizedEvents, &event);
}
if (windowevent == SDL_WINDOWEVENT_SIZE_CHANGED) {
SDL_FilterEvents(RemovePendingSizeChangedEvents, &event);
}
if (windowevent == SDL_WINDOWEVENT_MOVED) {
SDL_FilterEvents(RemovePendingMoveEvents, &event);
}
posted = (SDL_PushEvent(&event) > 0);
}
if (windowevent == SDL_WINDOWEVENT_CLOSE) {
if ( !window->prev && !window->next ) {
/* This is the last window in the list so send the SDL_QUIT event */
SDL_SendQuit();
}
}
return (posted);
}
/* vi: set ts=4 sw=4 expandtab: */

31
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#ifndef _SDL_windowevents_c_h
#define _SDL_windowevents_c_h
extern int SDL_SendWindowEvent(SDL_Window * window, Uint8 windowevent,
int data1, int data2);
#endif /* _SDL_windowevents_c_h */
/* vi: set ts=4 sw=4 expandtab: */

33
src/events/blank_cursor.h Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* A default blank 8x8 cursor */
#define BLANK_CWIDTH 8
#define BLANK_CHEIGHT 8
#define BLANK_CHOTX 0
#define BLANK_CHOTY 0
static const unsigned char blank_cdata[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
static const unsigned char blank_cmask[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
/* vi: set ts=4 sw=4 expandtab: */

114
src/events/default_cursor.h Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Default cursor - it happens to be the Mac cursor, but could be anything */
#define DEFAULT_CWIDTH 16
#define DEFAULT_CHEIGHT 16
#define DEFAULT_CHOTX 0
#define DEFAULT_CHOTY 0
/* Added a real MacOS cursor, at the request of Luc-Olivier de Charri<72>re */
#define USE_MACOS_CURSOR
#ifdef USE_MACOS_CURSOR
static const unsigned char default_cdata[] = {
0x00, 0x00,
0x40, 0x00,
0x60, 0x00,
0x70, 0x00,
0x78, 0x00,
0x7C, 0x00,
0x7E, 0x00,
0x7F, 0x00,
0x7F, 0x80,
0x7C, 0x00,
0x6C, 0x00,
0x46, 0x00,
0x06, 0x00,
0x03, 0x00,
0x03, 0x00,
0x00, 0x00
};
static const unsigned char default_cmask[] = {
0xC0, 0x00,
0xE0, 0x00,
0xF0, 0x00,
0xF8, 0x00,
0xFC, 0x00,
0xFE, 0x00,
0xFF, 0x00,
0xFF, 0x80,
0xFF, 0xC0,
0xFF, 0xE0,
0xFE, 0x00,
0xEF, 0x00,
0xCF, 0x00,
0x87, 0x80,
0x07, 0x80,
0x03, 0x00
};
#else
static const unsigned char default_cdata[] = {
0x00, 0x00,
0x40, 0x00,
0x60, 0x00,
0x70, 0x00,
0x78, 0x00,
0x7C, 0x00,
0x7E, 0x00,
0x7F, 0x00,
0x7F, 0x80,
0x7C, 0x00,
0x6C, 0x00,
0x46, 0x00,
0x06, 0x00,
0x03, 0x00,
0x03, 0x00,
0x00, 0x00
};
static const unsigned char default_cmask[] = {
0x40, 0x00,
0xE0, 0x00,
0xF0, 0x00,
0xF8, 0x00,
0xFC, 0x00,
0xFE, 0x00,
0xFF, 0x00,
0xFF, 0x80,
0xFF, 0xC0,
0xFF, 0x80,
0xFE, 0x00,
0xEF, 0x00,
0x4F, 0x00,
0x07, 0x80,
0x07, 0x80,
0x03, 0x00
};
#endif /* TRUE_MACINTOSH_CURSOR */
/* vi: set ts=4 sw=4 expandtab: */

159
src/events/scancodes_darwin.h Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* Mac virtual key code to SDL scancode mapping table
Sources:
- Inside Macintosh: Text <http://developer.apple.com/documentation/mac/Text/Text-571.html>
- Apple USB keyboard driver source <http://darwinsource.opendarwin.org/10.4.6.ppc/IOHIDFamily-172.8/IOHIDFamily/Cosmo_USB2ADB.c>
- experimentation on various ADB and USB ISO keyboards and one ADB ANSI keyboard
*/
/* *INDENT-OFF* */
static const SDL_Scancode darwin_scancode_table[] = {
/* 0 */ SDL_SCANCODE_A,
/* 1 */ SDL_SCANCODE_S,
/* 2 */ SDL_SCANCODE_D,
/* 3 */ SDL_SCANCODE_F,
/* 4 */ SDL_SCANCODE_H,
/* 5 */ SDL_SCANCODE_G,
/* 6 */ SDL_SCANCODE_Z,
/* 7 */ SDL_SCANCODE_X,
/* 8 */ SDL_SCANCODE_C,
/* 9 */ SDL_SCANCODE_V,
/* 10 */ SDL_SCANCODE_NONUSBACKSLASH, /* SDL_SCANCODE_NONUSBACKSLASH on ANSI and JIS keyboards (if this key would exist there), SDL_SCANCODE_GRAVE on ISO. (The USB keyboard driver actually translates these usage codes to different virtual key codes depending on whether the keyboard is ISO/ANSI/JIS. That's why you have to help it identify the keyboard type when you plug in a PC USB keyboard. It's a historical thing - ADB keyboards are wired this way.) */
/* 11 */ SDL_SCANCODE_B,
/* 12 */ SDL_SCANCODE_Q,
/* 13 */ SDL_SCANCODE_W,
/* 14 */ SDL_SCANCODE_E,
/* 15 */ SDL_SCANCODE_R,
/* 16 */ SDL_SCANCODE_Y,
/* 17 */ SDL_SCANCODE_T,
/* 18 */ SDL_SCANCODE_1,
/* 19 */ SDL_SCANCODE_2,
/* 20 */ SDL_SCANCODE_3,
/* 21 */ SDL_SCANCODE_4,
/* 22 */ SDL_SCANCODE_6,
/* 23 */ SDL_SCANCODE_5,
/* 24 */ SDL_SCANCODE_EQUALS,
/* 25 */ SDL_SCANCODE_9,
/* 26 */ SDL_SCANCODE_7,
/* 27 */ SDL_SCANCODE_MINUS,
/* 28 */ SDL_SCANCODE_8,
/* 29 */ SDL_SCANCODE_0,
/* 30 */ SDL_SCANCODE_RIGHTBRACKET,
/* 31 */ SDL_SCANCODE_O,
/* 32 */ SDL_SCANCODE_U,
/* 33 */ SDL_SCANCODE_LEFTBRACKET,
/* 34 */ SDL_SCANCODE_I,
/* 35 */ SDL_SCANCODE_P,
/* 36 */ SDL_SCANCODE_RETURN,
/* 37 */ SDL_SCANCODE_L,
/* 38 */ SDL_SCANCODE_J,
/* 39 */ SDL_SCANCODE_APOSTROPHE,
/* 40 */ SDL_SCANCODE_K,
/* 41 */ SDL_SCANCODE_SEMICOLON,
/* 42 */ SDL_SCANCODE_BACKSLASH,
/* 43 */ SDL_SCANCODE_COMMA,
/* 44 */ SDL_SCANCODE_SLASH,
/* 45 */ SDL_SCANCODE_N,
/* 46 */ SDL_SCANCODE_M,
/* 47 */ SDL_SCANCODE_PERIOD,
/* 48 */ SDL_SCANCODE_TAB,
/* 49 */ SDL_SCANCODE_SPACE,
/* 50 */ SDL_SCANCODE_GRAVE, /* SDL_SCANCODE_GRAVE on ANSI and JIS keyboards, SDL_SCANCODE_NONUSBACKSLASH on ISO (see comment about virtual key code 10 above) */
/* 51 */ SDL_SCANCODE_BACKSPACE,
/* 52 */ SDL_SCANCODE_KP_ENTER, /* keyboard enter on portables */
/* 53 */ SDL_SCANCODE_ESCAPE,
/* 54 */ SDL_SCANCODE_RGUI,
/* 55 */ SDL_SCANCODE_LGUI,
/* 56 */ SDL_SCANCODE_LSHIFT,
/* 57 */ SDL_SCANCODE_CAPSLOCK,
/* 58 */ SDL_SCANCODE_LALT,
/* 59 */ SDL_SCANCODE_LCTRL,
/* 60 */ SDL_SCANCODE_RSHIFT,
/* 61 */ SDL_SCANCODE_RALT,
/* 62 */ SDL_SCANCODE_RCTRL,
/* 63 */ SDL_SCANCODE_RGUI, /* fn on portables, acts as a hardware-level modifier already, so we don't generate events for it, also XK_Meta_R */
/* 64 */ SDL_SCANCODE_F17,
/* 65 */ SDL_SCANCODE_KP_PERIOD,
/* 66 */ SDL_SCANCODE_UNKNOWN, /* unknown (unused?) */
/* 67 */ SDL_SCANCODE_KP_MULTIPLY,
/* 68 */ SDL_SCANCODE_UNKNOWN, /* unknown (unused?) */
/* 69 */ SDL_SCANCODE_KP_PLUS,
/* 70 */ SDL_SCANCODE_UNKNOWN, /* unknown (unused?) */
/* 71 */ SDL_SCANCODE_NUMLOCKCLEAR,
/* 72 */ SDL_SCANCODE_VOLUMEUP,
/* 73 */ SDL_SCANCODE_VOLUMEDOWN,
/* 74 */ SDL_SCANCODE_MUTE,
/* 75 */ SDL_SCANCODE_KP_DIVIDE,
/* 76 */ SDL_SCANCODE_KP_ENTER, /* keypad enter on external keyboards, fn-return on portables */
/* 77 */ SDL_SCANCODE_UNKNOWN, /* unknown (unused?) */
/* 78 */ SDL_SCANCODE_KP_MINUS,
/* 79 */ SDL_SCANCODE_F18,
/* 80 */ SDL_SCANCODE_F19,
/* 81 */ SDL_SCANCODE_KP_EQUALS,
/* 82 */ SDL_SCANCODE_KP_0,
/* 83 */ SDL_SCANCODE_KP_1,
/* 84 */ SDL_SCANCODE_KP_2,
/* 85 */ SDL_SCANCODE_KP_3,
/* 86 */ SDL_SCANCODE_KP_4,
/* 87 */ SDL_SCANCODE_KP_5,
/* 88 */ SDL_SCANCODE_KP_6,
/* 89 */ SDL_SCANCODE_KP_7,
/* 90 */ SDL_SCANCODE_UNKNOWN, /* unknown (unused?) */
/* 91 */ SDL_SCANCODE_KP_8,
/* 92 */ SDL_SCANCODE_KP_9,
/* 93 */ SDL_SCANCODE_INTERNATIONAL3, /* Cosmo_USB2ADB.c says "Yen (JIS)" */
/* 94 */ SDL_SCANCODE_INTERNATIONAL1, /* Cosmo_USB2ADB.c says "Ro (JIS)" */
/* 95 */ SDL_SCANCODE_KP_COMMA, /* Cosmo_USB2ADB.c says ", JIS only" */
/* 96 */ SDL_SCANCODE_F5,
/* 97 */ SDL_SCANCODE_F6,
/* 98 */ SDL_SCANCODE_F7,
/* 99 */ SDL_SCANCODE_F3,
/* 100 */ SDL_SCANCODE_F8,
/* 101 */ SDL_SCANCODE_F9,
/* 102 */ SDL_SCANCODE_LANG2, /* Cosmo_USB2ADB.c says "Eisu" */
/* 103 */ SDL_SCANCODE_F11,
/* 104 */ SDL_SCANCODE_LANG1, /* Cosmo_USB2ADB.c says "Kana" */
/* 105 */ SDL_SCANCODE_PRINTSCREEN, /* On ADB keyboards, this key is labeled "F13/print screen". Problem: USB has different usage codes for these two functions. On Apple USB keyboards, the key is labeled "F13" and sends the F13 usage code (SDL_SCANCODE_F13). I decided to use SDL_SCANCODE_PRINTSCREEN here nevertheless since SDL applications are more likely to assume the presence of a print screen key than an F13 key. */
/* 106 */ SDL_SCANCODE_F16,
/* 107 */ SDL_SCANCODE_SCROLLLOCK, /* F14/scroll lock, see comment about F13/print screen above */
/* 108 */ SDL_SCANCODE_UNKNOWN, /* unknown (unused?) */
/* 109 */ SDL_SCANCODE_F10,
/* 110 */ SDL_SCANCODE_APPLICATION, /* windows contextual menu key, fn-enter on portables */
/* 111 */ SDL_SCANCODE_F12,
/* 112 */ SDL_SCANCODE_UNKNOWN, /* unknown (unused?) */
/* 113 */ SDL_SCANCODE_PAUSE, /* F15/pause, see comment about F13/print screen above */
/* 114 */ SDL_SCANCODE_INSERT, /* the key is actually labeled "help" on Apple keyboards, and works as such in Mac OS, but it sends the "insert" usage code even on Apple USB keyboards */
/* 115 */ SDL_SCANCODE_HOME,
/* 116 */ SDL_SCANCODE_PAGEUP,
/* 117 */ SDL_SCANCODE_DELETE,
/* 118 */ SDL_SCANCODE_F4,
/* 119 */ SDL_SCANCODE_END,
/* 120 */ SDL_SCANCODE_F2,
/* 121 */ SDL_SCANCODE_PAGEDOWN,
/* 122 */ SDL_SCANCODE_F1,
/* 123 */ SDL_SCANCODE_LEFT,
/* 124 */ SDL_SCANCODE_RIGHT,
/* 125 */ SDL_SCANCODE_DOWN,
/* 126 */ SDL_SCANCODE_UP,
/* 127 */ SDL_SCANCODE_POWER
};
/* *INDENT-ON* */

263
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../include/SDL_scancode.h"
/* Linux virtual key code to SDL_Keycode mapping table
Sources:
- Linux kernel source input.h
*/
/* *INDENT-OFF* */
static SDL_Scancode const linux_scancode_table[] = {
/* 0 */ SDL_SCANCODE_UNKNOWN,
/* 1 */ SDL_SCANCODE_ESCAPE,
/* 2 */ SDL_SCANCODE_1,
/* 3 */ SDL_SCANCODE_2,
/* 4 */ SDL_SCANCODE_3,
/* 5 */ SDL_SCANCODE_4,
/* 6 */ SDL_SCANCODE_5,
/* 7 */ SDL_SCANCODE_6,
/* 8 */ SDL_SCANCODE_7,
/* 9 */ SDL_SCANCODE_8,
/* 10 */ SDL_SCANCODE_9,
/* 11 */ SDL_SCANCODE_0,
/* 12 */ SDL_SCANCODE_MINUS,
/* 13 */ SDL_SCANCODE_EQUALS,
/* 14 */ SDL_SCANCODE_BACKSPACE,
/* 15 */ SDL_SCANCODE_TAB,
/* 16 */ SDL_SCANCODE_Q,
/* 17 */ SDL_SCANCODE_W,
/* 18 */ SDL_SCANCODE_E,
/* 19 */ SDL_SCANCODE_R,
/* 20 */ SDL_SCANCODE_T,
/* 21 */ SDL_SCANCODE_Y,
/* 22 */ SDL_SCANCODE_U,
/* 23 */ SDL_SCANCODE_I,
/* 24 */ SDL_SCANCODE_O,
/* 25 */ SDL_SCANCODE_P,
/* 26 */ SDL_SCANCODE_LEFTBRACKET,
/* 27 */ SDL_SCANCODE_RIGHTBRACKET,
/* 28 */ SDL_SCANCODE_RETURN,
/* 29 */ SDL_SCANCODE_LCTRL,
/* 30 */ SDL_SCANCODE_A,
/* 31 */ SDL_SCANCODE_S,
/* 32 */ SDL_SCANCODE_D,
/* 33 */ SDL_SCANCODE_F,
/* 34 */ SDL_SCANCODE_G,
/* 35 */ SDL_SCANCODE_H,
/* 36 */ SDL_SCANCODE_J,
/* 37 */ SDL_SCANCODE_K,
/* 38 */ SDL_SCANCODE_L,
/* 39 */ SDL_SCANCODE_SEMICOLON,
/* 40 */ SDL_SCANCODE_APOSTROPHE,
/* 41 */ SDL_SCANCODE_GRAVE,
/* 42 */ SDL_SCANCODE_LSHIFT,
/* 43 */ SDL_SCANCODE_BACKSLASH,
/* 44 */ SDL_SCANCODE_Z,
/* 45 */ SDL_SCANCODE_X,
/* 46 */ SDL_SCANCODE_C,
/* 47 */ SDL_SCANCODE_V,
/* 48 */ SDL_SCANCODE_B,
/* 49 */ SDL_SCANCODE_N,
/* 50 */ SDL_SCANCODE_M,
/* 51 */ SDL_SCANCODE_COMMA,
/* 52 */ SDL_SCANCODE_PERIOD,
/* 53 */ SDL_SCANCODE_SLASH,
/* 54 */ SDL_SCANCODE_RSHIFT,
/* 55 */ SDL_SCANCODE_KP_MULTIPLY,
/* 56 */ SDL_SCANCODE_LALT,
/* 57 */ SDL_SCANCODE_SPACE,
/* 58 */ SDL_SCANCODE_CAPSLOCK,
/* 59 */ SDL_SCANCODE_F1,
/* 60 */ SDL_SCANCODE_F2,
/* 61 */ SDL_SCANCODE_F3,
/* 62 */ SDL_SCANCODE_F4,
/* 63 */ SDL_SCANCODE_F5,
/* 64 */ SDL_SCANCODE_F6,
/* 65 */ SDL_SCANCODE_F7,
/* 66 */ SDL_SCANCODE_F8,
/* 67 */ SDL_SCANCODE_F9,
/* 68 */ SDL_SCANCODE_F10,
/* 69 */ SDL_SCANCODE_NUMLOCKCLEAR,
/* 70 */ SDL_SCANCODE_SCROLLLOCK,
/* 71 */ SDL_SCANCODE_KP_7,
/* 72 */ SDL_SCANCODE_KP_8,
/* 73 */ SDL_SCANCODE_KP_9,
/* 74 */ SDL_SCANCODE_KP_MINUS,
/* 75 */ SDL_SCANCODE_KP_4,
/* 76 */ SDL_SCANCODE_KP_5,
/* 77 */ SDL_SCANCODE_KP_6,
/* 78 */ SDL_SCANCODE_KP_PLUS,
/* 79 */ SDL_SCANCODE_KP_1,
/* 80 */ SDL_SCANCODE_KP_2,
/* 81 */ SDL_SCANCODE_KP_3,
/* 82 */ SDL_SCANCODE_KP_0,
/* 83 */ SDL_SCANCODE_KP_PERIOD,
0,
/* 85 */ SDL_SCANCODE_UNKNOWN, /* KEY_ZENKAKUHANKAKU */
/* 86 */ SDL_SCANCODE_NONUSBACKSLASH, /* KEY_102ND */
/* 87 */ SDL_SCANCODE_F11,
/* 88 */ SDL_SCANCODE_F12,
/* 89 */ SDL_SCANCODE_INTERNATIONAL1, /* KEY_RO */
/* 90 */ SDL_SCANCODE_LANG3, /* KEY_KATAKANA */
/* 91 */ SDL_SCANCODE_LANG4, /* KEY_HIRAGANA */
/* 92 */ SDL_SCANCODE_INTERNATIONAL4, /* KEY_HENKAN */
/* 93 */ SDL_SCANCODE_INTERNATIONAL2, /* KEY_KATAKANAHIRAGANA */
/* 94 */ SDL_SCANCODE_INTERNATIONAL5, /* KEY_MUHENKAN */
/* 95 */ SDL_SCANCODE_INTERNATIONAL5, /* KEY_KPJPCOMMA */
/* 96 */ SDL_SCANCODE_KP_ENTER,
/* 97 */ SDL_SCANCODE_RCTRL,
/* 98 */ SDL_SCANCODE_KP_DIVIDE,
/* 99 */ SDL_SCANCODE_SYSREQ,
/* 100 */ SDL_SCANCODE_RALT,
/* 101 */ SDL_SCANCODE_UNKNOWN, /* KEY_LINEFEED */
/* 102 */ SDL_SCANCODE_HOME,
/* 103 */ SDL_SCANCODE_UP,
/* 104 */ SDL_SCANCODE_PAGEUP,
/* 105 */ SDL_SCANCODE_LEFT,
/* 106 */ SDL_SCANCODE_RIGHT,
/* 107 */ SDL_SCANCODE_END,
/* 108 */ SDL_SCANCODE_DOWN,
/* 109 */ SDL_SCANCODE_PAGEDOWN,
/* 110 */ SDL_SCANCODE_INSERT,
/* 111 */ SDL_SCANCODE_DELETE,
/* 112 */ SDL_SCANCODE_UNKNOWN, /* KEY_MACRO */
/* 113 */ SDL_SCANCODE_MUTE,
/* 114 */ SDL_SCANCODE_VOLUMEDOWN,
/* 115 */ SDL_SCANCODE_VOLUMEUP,
/* 116 */ SDL_SCANCODE_POWER,
/* 117 */ SDL_SCANCODE_KP_EQUALS,
/* 118 */ SDL_SCANCODE_KP_PLUSMINUS,
/* 119 */ SDL_SCANCODE_PAUSE,
0,
/* 121 */ SDL_SCANCODE_KP_COMMA,
/* 122 */ SDL_SCANCODE_LANG1, /* KEY_HANGUEL */
/* 123 */ SDL_SCANCODE_LANG2, /* KEY_HANJA */
/* 124 */ SDL_SCANCODE_INTERNATIONAL3, /* KEY_YEN */
/* 125 */ SDL_SCANCODE_LGUI,
/* 126 */ SDL_SCANCODE_RGUI,
/* 127 */ SDL_SCANCODE_UNKNOWN, /* KEY_COMPOSE */
/* 128 */ SDL_SCANCODE_STOP,
/* 129 */ SDL_SCANCODE_AGAIN,
/* 130 */ SDL_SCANCODE_UNKNOWN, /* KEY_PROPS */
/* 131 */ SDL_SCANCODE_UNDO,
/* 132 */ SDL_SCANCODE_UNKNOWN, /* KEY_FRONT */
/* 133 */ SDL_SCANCODE_COPY,
/* 134 */ SDL_SCANCODE_UNKNOWN, /* KEY_OPEN */
/* 135 */ SDL_SCANCODE_PASTE,
/* 136 */ SDL_SCANCODE_FIND,
/* 137 */ SDL_SCANCODE_CUT,
/* 138 */ SDL_SCANCODE_HELP,
/* 139 */ SDL_SCANCODE_MENU,
/* 140 */ SDL_SCANCODE_CALCULATOR,
/* 141 */ SDL_SCANCODE_UNKNOWN, /* KEY_SETUP */
/* 142 */ SDL_SCANCODE_SLEEP,
/* 143 */ SDL_SCANCODE_UNKNOWN, /* KEY_WAKEUP */
/* 144 */ SDL_SCANCODE_UNKNOWN, /* KEY_FILE */
/* 145 */ SDL_SCANCODE_UNKNOWN, /* KEY_SENDFILE */
/* 146 */ SDL_SCANCODE_UNKNOWN, /* KEY_DELETEFILE */
/* 147 */ SDL_SCANCODE_UNKNOWN, /* KEY_XFER */
/* 148 */ SDL_SCANCODE_UNKNOWN, /* KEY_PROG1 */
/* 149 */ SDL_SCANCODE_UNKNOWN, /* KEY_PROG2 */
/* 150 */ SDL_SCANCODE_UNKNOWN, /* KEY_WWW */
/* 151 */ SDL_SCANCODE_UNKNOWN, /* KEY_MSDOS */
/* 152 */ SDL_SCANCODE_UNKNOWN, /* KEY_COFFEE */
/* 153 */ SDL_SCANCODE_UNKNOWN, /* KEY_DIRECTION */
/* 154 */ SDL_SCANCODE_UNKNOWN, /* KEY_CYCLEWINDOWS */
/* 155 */ SDL_SCANCODE_MAIL,
/* 156 */ SDL_SCANCODE_AC_BOOKMARKS,
/* 157 */ SDL_SCANCODE_COMPUTER,
/* 158 */ SDL_SCANCODE_AC_BACK,
/* 159 */ SDL_SCANCODE_AC_FORWARD,
/* 160 */ SDL_SCANCODE_UNKNOWN, /* KEY_CLOSECD */
/* 161 */ SDL_SCANCODE_EJECT, /* KEY_EJECTCD */
/* 162 */ SDL_SCANCODE_UNKNOWN, /* KEY_EJECTCLOSECD */
/* 163 */ SDL_SCANCODE_AUDIONEXT, /* KEY_NEXTSONG */
/* 164 */ SDL_SCANCODE_AUDIOPLAY, /* KEY_PLAYPAUSE */
/* 165 */ SDL_SCANCODE_AUDIOPREV, /* KEY_PREVIOUSSONG */
/* 166 */ SDL_SCANCODE_UNKNOWN, /* KEY_STOPCD */
/* 167 */ SDL_SCANCODE_UNKNOWN, /* KEY_RECORD */
/* 168 */ SDL_SCANCODE_UNKNOWN, /* KEY_REWIND */
/* 169 */ SDL_SCANCODE_UNKNOWN, /* KEY_PHONE */
/* 170 */ SDL_SCANCODE_UNKNOWN, /* KEY_ISO */
/* 171 */ SDL_SCANCODE_UNKNOWN, /* KEY_CONFIG */
/* 172 */ SDL_SCANCODE_AC_HOME,
/* 173 */ SDL_SCANCODE_AC_REFRESH,
/* 174 */ SDL_SCANCODE_UNKNOWN, /* KEY_EXIT */
/* 175 */ SDL_SCANCODE_UNKNOWN, /* KEY_MOVE */
/* 176 */ SDL_SCANCODE_UNKNOWN, /* KEY_EDIT */
/* 177 */ SDL_SCANCODE_UNKNOWN, /* KEY_SCROLLUP */
/* 178 */ SDL_SCANCODE_UNKNOWN, /* KEY_SCROLLDOWN */
/* 179 */ SDL_SCANCODE_KP_LEFTPAREN,
/* 180 */ SDL_SCANCODE_KP_RIGHTPAREN,
/* 181 */ SDL_SCANCODE_UNKNOWN, /* KEY_NEW */
/* 182 */ SDL_SCANCODE_UNKNOWN, /* KEY_REDO */
/* 183 */ SDL_SCANCODE_F13,
/* 184 */ SDL_SCANCODE_F14,
/* 185 */ SDL_SCANCODE_F15,
/* 186 */ SDL_SCANCODE_F16,
/* 187 */ SDL_SCANCODE_F17,
/* 188 */ SDL_SCANCODE_F18,
/* 189 */ SDL_SCANCODE_F19,
/* 190 */ SDL_SCANCODE_F20,
/* 191 */ SDL_SCANCODE_F21,
/* 192 */ SDL_SCANCODE_F22,
/* 193 */ SDL_SCANCODE_F23,
/* 194 */ SDL_SCANCODE_F24,
0, 0, 0, 0,
/* 200 */ SDL_SCANCODE_UNKNOWN, /* KEY_PLAYCD */
/* 201 */ SDL_SCANCODE_UNKNOWN, /* KEY_PAUSECD */
/* 202 */ SDL_SCANCODE_UNKNOWN, /* KEY_PROG3 */
/* 203 */ SDL_SCANCODE_UNKNOWN, /* KEY_PROG4 */
0,
/* 205 */ SDL_SCANCODE_UNKNOWN, /* KEY_SUSPEND */
/* 206 */ SDL_SCANCODE_UNKNOWN, /* KEY_CLOSE */
/* 207 */ SDL_SCANCODE_UNKNOWN, /* KEY_PLAY */
/* 208 */ SDL_SCANCODE_UNKNOWN, /* KEY_FASTFORWARD */
/* 209 */ SDL_SCANCODE_UNKNOWN, /* KEY_BASSBOOST */
/* 210 */ SDL_SCANCODE_UNKNOWN, /* KEY_PRINT */
/* 211 */ SDL_SCANCODE_UNKNOWN, /* KEY_HP */
/* 212 */ SDL_SCANCODE_UNKNOWN, /* KEY_CAMERA */
/* 213 */ SDL_SCANCODE_UNKNOWN, /* KEY_SOUND */
/* 214 */ SDL_SCANCODE_UNKNOWN, /* KEY_QUESTION */
/* 215 */ SDL_SCANCODE_UNKNOWN, /* KEY_EMAIL */
/* 216 */ SDL_SCANCODE_UNKNOWN, /* KEY_CHAT */
/* 217 */ SDL_SCANCODE_AC_SEARCH,
/* 218 */ SDL_SCANCODE_UNKNOWN, /* KEY_CONNECT */
/* 219 */ SDL_SCANCODE_UNKNOWN, /* KEY_FINANCE */
/* 220 */ SDL_SCANCODE_UNKNOWN, /* KEY_SPORT */
/* 221 */ SDL_SCANCODE_UNKNOWN, /* KEY_SHOP */
/* 222 */ SDL_SCANCODE_ALTERASE,
/* 223 */ SDL_SCANCODE_CANCEL,
/* 224 */ SDL_SCANCODE_BRIGHTNESSDOWN,
/* 225 */ SDL_SCANCODE_BRIGHTNESSUP,
/* 226 */ SDL_SCANCODE_UNKNOWN, /* KEY_MEDIA */
/* 227 */ SDL_SCANCODE_DISPLAYSWITCH, /* KEY_SWITCHVIDEOMODE */
/* 228 */ SDL_SCANCODE_KBDILLUMTOGGLE,
/* 229 */ SDL_SCANCODE_KBDILLUMDOWN,
/* 230 */ SDL_SCANCODE_KBDILLUMUP,
/* 231 */ SDL_SCANCODE_UNKNOWN, /* KEY_SEND */
/* 232 */ SDL_SCANCODE_UNKNOWN, /* KEY_REPLY */
/* 233 */ SDL_SCANCODE_UNKNOWN, /* KEY_FORWARDMAIL */
/* 234 */ SDL_SCANCODE_UNKNOWN, /* KEY_SAVE */
/* 235 */ SDL_SCANCODE_UNKNOWN, /* KEY_DOCUMENTS */
/* 236 */ SDL_SCANCODE_UNKNOWN, /* KEY_BATTERY */
};
/* *INDENT-ON* */

55
src/events/scancodes_windows.h Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../include/SDL_scancode.h"
/* Windows scancode to SDL scancode mapping table */
/* derived from Microsoft scan code document, http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/scancode.doc */
/* *INDENT-OFF* */
static const SDL_Scancode windows_scancode_table[] =
{
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_ESCAPE, SDL_SCANCODE_1, SDL_SCANCODE_2, SDL_SCANCODE_3, SDL_SCANCODE_4, SDL_SCANCODE_5, SDL_SCANCODE_6, // 0
SDL_SCANCODE_7, SDL_SCANCODE_8, SDL_SCANCODE_9, SDL_SCANCODE_0, SDL_SCANCODE_MINUS, SDL_SCANCODE_EQUALS, SDL_SCANCODE_BACKSPACE, SDL_SCANCODE_TAB, // 0
SDL_SCANCODE_Q, SDL_SCANCODE_W, SDL_SCANCODE_E, SDL_SCANCODE_R, SDL_SCANCODE_T, SDL_SCANCODE_Y, SDL_SCANCODE_U, SDL_SCANCODE_I, // 1
SDL_SCANCODE_O, SDL_SCANCODE_P, SDL_SCANCODE_LEFTBRACKET, SDL_SCANCODE_RIGHTBRACKET, SDL_SCANCODE_RETURN, SDL_SCANCODE_LCTRL, SDL_SCANCODE_A, SDL_SCANCODE_S, // 1
SDL_SCANCODE_D, SDL_SCANCODE_F, SDL_SCANCODE_G, SDL_SCANCODE_H, SDL_SCANCODE_J, SDL_SCANCODE_K, SDL_SCANCODE_L, SDL_SCANCODE_SEMICOLON, // 2
SDL_SCANCODE_APOSTROPHE, SDL_SCANCODE_GRAVE, SDL_SCANCODE_LSHIFT, SDL_SCANCODE_BACKSLASH, SDL_SCANCODE_Z, SDL_SCANCODE_X, SDL_SCANCODE_C, SDL_SCANCODE_V, // 2
SDL_SCANCODE_B, SDL_SCANCODE_N, SDL_SCANCODE_M, SDL_SCANCODE_COMMA, SDL_SCANCODE_PERIOD, SDL_SCANCODE_SLASH, SDL_SCANCODE_RSHIFT, SDL_SCANCODE_PRINTSCREEN,// 3
SDL_SCANCODE_LALT, SDL_SCANCODE_SPACE, SDL_SCANCODE_CAPSLOCK, SDL_SCANCODE_F1, SDL_SCANCODE_F2, SDL_SCANCODE_F3, SDL_SCANCODE_F4, SDL_SCANCODE_F5, // 3
SDL_SCANCODE_F6, SDL_SCANCODE_F7, SDL_SCANCODE_F8, SDL_SCANCODE_F9, SDL_SCANCODE_F10, SDL_SCANCODE_NUMLOCKCLEAR, SDL_SCANCODE_SCROLLLOCK, SDL_SCANCODE_HOME, // 4
SDL_SCANCODE_UP, SDL_SCANCODE_PAGEUP, SDL_SCANCODE_KP_MINUS, SDL_SCANCODE_LEFT, SDL_SCANCODE_KP_5, SDL_SCANCODE_RIGHT, SDL_SCANCODE_KP_PLUS, SDL_SCANCODE_END, // 4
SDL_SCANCODE_DOWN, SDL_SCANCODE_PAGEDOWN, SDL_SCANCODE_INSERT, SDL_SCANCODE_DELETE, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_NONUSBACKSLASH,SDL_SCANCODE_F11, // 5
SDL_SCANCODE_F12, SDL_SCANCODE_PAUSE, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_LGUI, SDL_SCANCODE_RGUI, SDL_SCANCODE_APPLICATION, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, // 5
SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_F13, SDL_SCANCODE_F14, SDL_SCANCODE_F15, SDL_SCANCODE_F16, // 6
SDL_SCANCODE_F17, SDL_SCANCODE_F18, SDL_SCANCODE_F19, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, // 6
SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, // 7
SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN // 7
};
/* *INDENT-ON* */

421
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../include/SDL_scancode.h"
/* XFree86 key code to SDL scancode mapping table
Sources:
- atKeyNames.h from XFree86 source code
*/
/* *INDENT-OFF* */
static const SDL_Scancode xfree86_scancode_table[] = {
/* 0 */ SDL_SCANCODE_UNKNOWN,
/* 1 */ SDL_SCANCODE_ESCAPE,
/* 2 */ SDL_SCANCODE_1,
/* 3 */ SDL_SCANCODE_2,
/* 4 */ SDL_SCANCODE_3,
/* 5 */ SDL_SCANCODE_4,
/* 6 */ SDL_SCANCODE_5,
/* 7 */ SDL_SCANCODE_6,
/* 8 */ SDL_SCANCODE_7,
/* 9 */ SDL_SCANCODE_8,
/* 10 */ SDL_SCANCODE_9,
/* 11 */ SDL_SCANCODE_0,
/* 12 */ SDL_SCANCODE_MINUS,
/* 13 */ SDL_SCANCODE_EQUALS,
/* 14 */ SDL_SCANCODE_BACKSPACE,
/* 15 */ SDL_SCANCODE_TAB,
/* 16 */ SDL_SCANCODE_Q,
/* 17 */ SDL_SCANCODE_W,
/* 18 */ SDL_SCANCODE_E,
/* 19 */ SDL_SCANCODE_R,
/* 20 */ SDL_SCANCODE_T,
/* 21 */ SDL_SCANCODE_Y,
/* 22 */ SDL_SCANCODE_U,
/* 23 */ SDL_SCANCODE_I,
/* 24 */ SDL_SCANCODE_O,
/* 25 */ SDL_SCANCODE_P,
/* 26 */ SDL_SCANCODE_LEFTBRACKET,
/* 27 */ SDL_SCANCODE_RIGHTBRACKET,
/* 28 */ SDL_SCANCODE_RETURN,
/* 29 */ SDL_SCANCODE_LCTRL,
/* 30 */ SDL_SCANCODE_A,
/* 31 */ SDL_SCANCODE_S,
/* 32 */ SDL_SCANCODE_D,
/* 33 */ SDL_SCANCODE_F,
/* 34 */ SDL_SCANCODE_G,
/* 35 */ SDL_SCANCODE_H,
/* 36 */ SDL_SCANCODE_J,
/* 37 */ SDL_SCANCODE_K,
/* 38 */ SDL_SCANCODE_L,
/* 39 */ SDL_SCANCODE_SEMICOLON,
/* 40 */ SDL_SCANCODE_APOSTROPHE,
/* 41 */ SDL_SCANCODE_GRAVE,
/* 42 */ SDL_SCANCODE_LSHIFT,
/* 43 */ SDL_SCANCODE_BACKSLASH,
/* 44 */ SDL_SCANCODE_Z,
/* 45 */ SDL_SCANCODE_X,
/* 46 */ SDL_SCANCODE_C,
/* 47 */ SDL_SCANCODE_V,
/* 48 */ SDL_SCANCODE_B,
/* 49 */ SDL_SCANCODE_N,
/* 50 */ SDL_SCANCODE_M,
/* 51 */ SDL_SCANCODE_COMMA,
/* 52 */ SDL_SCANCODE_PERIOD,
/* 53 */ SDL_SCANCODE_SLASH,
/* 54 */ SDL_SCANCODE_RSHIFT,
/* 55 */ SDL_SCANCODE_KP_MULTIPLY,
/* 56 */ SDL_SCANCODE_LALT,
/* 57 */ SDL_SCANCODE_SPACE,
/* 58 */ SDL_SCANCODE_CAPSLOCK,
/* 59 */ SDL_SCANCODE_F1,
/* 60 */ SDL_SCANCODE_F2,
/* 61 */ SDL_SCANCODE_F3,
/* 62 */ SDL_SCANCODE_F4,
/* 63 */ SDL_SCANCODE_F5,
/* 64 */ SDL_SCANCODE_F6,
/* 65 */ SDL_SCANCODE_F7,
/* 66 */ SDL_SCANCODE_F8,
/* 67 */ SDL_SCANCODE_F9,
/* 68 */ SDL_SCANCODE_F10,
/* 69 */ SDL_SCANCODE_NUMLOCKCLEAR,
/* 70 */ SDL_SCANCODE_SCROLLLOCK,
/* 71 */ SDL_SCANCODE_KP_7,
/* 72 */ SDL_SCANCODE_KP_8,
/* 73 */ SDL_SCANCODE_KP_9,
/* 74 */ SDL_SCANCODE_KP_MINUS,
/* 75 */ SDL_SCANCODE_KP_4,
/* 76 */ SDL_SCANCODE_KP_5,
/* 77 */ SDL_SCANCODE_KP_6,
/* 78 */ SDL_SCANCODE_KP_PLUS,
/* 79 */ SDL_SCANCODE_KP_1,
/* 80 */ SDL_SCANCODE_KP_2,
/* 81 */ SDL_SCANCODE_KP_3,
/* 82 */ SDL_SCANCODE_KP_0,
/* 83 */ SDL_SCANCODE_KP_PERIOD,
/* 84 */ SDL_SCANCODE_SYSREQ,
/* 85 */ SDL_SCANCODE_MODE,
/* 86 */ SDL_SCANCODE_NONUSBACKSLASH,
/* 87 */ SDL_SCANCODE_F11,
/* 88 */ SDL_SCANCODE_F12,
/* 89 */ SDL_SCANCODE_HOME,
/* 90 */ SDL_SCANCODE_UP,
/* 91 */ SDL_SCANCODE_PAGEUP,
/* 92 */ SDL_SCANCODE_LEFT,
/* 93 */ SDL_SCANCODE_BRIGHTNESSDOWN, /* on PowerBook G4 / KEY_Begin */
/* 94 */ SDL_SCANCODE_RIGHT,
/* 95 */ SDL_SCANCODE_END,
/* 96 */ SDL_SCANCODE_DOWN,
/* 97 */ SDL_SCANCODE_PAGEDOWN,
/* 98 */ SDL_SCANCODE_INSERT,
/* 99 */ SDL_SCANCODE_DELETE,
/* 100 */ SDL_SCANCODE_KP_ENTER,
/* 101 */ SDL_SCANCODE_RCTRL,
/* 102 */ SDL_SCANCODE_PAUSE,
/* 103 */ SDL_SCANCODE_PRINTSCREEN,
/* 104 */ SDL_SCANCODE_KP_DIVIDE,
/* 105 */ SDL_SCANCODE_RALT,
/* 106 */ SDL_SCANCODE_UNKNOWN, /* BREAK */
/* 107 */ SDL_SCANCODE_LGUI,
/* 108 */ SDL_SCANCODE_RGUI,
/* 109 */ SDL_SCANCODE_APPLICATION,
/* 110 */ SDL_SCANCODE_F13,
/* 111 */ SDL_SCANCODE_F14,
/* 112 */ SDL_SCANCODE_F15,
/* 113 */ SDL_SCANCODE_F16,
/* 114 */ SDL_SCANCODE_F17,
/* 115 */ SDL_SCANCODE_UNKNOWN,
/* 116 */ SDL_SCANCODE_UNKNOWN, /* is translated to XK_ISO_Level3_Shift by my X server, but I have no keyboard that generates this code, so I don't know what the correct SDL_SCANCODE_* for it is */
/* 117 */ SDL_SCANCODE_UNKNOWN,
/* 118 */ SDL_SCANCODE_KP_EQUALS,
/* 119 */ SDL_SCANCODE_UNKNOWN,
/* 120 */ SDL_SCANCODE_UNKNOWN,
/* 121 */ SDL_SCANCODE_UNKNOWN,
/* 122 */ SDL_SCANCODE_UNKNOWN,
/* 123 */ SDL_SCANCODE_UNKNOWN,
/* 124 */ SDL_SCANCODE_UNKNOWN,
/* 125 */ SDL_SCANCODE_INTERNATIONAL3, /* Yen */
/* 126 */ SDL_SCANCODE_UNKNOWN,
/* 127 */ SDL_SCANCODE_UNKNOWN,
/* 128 */ SDL_SCANCODE_UNKNOWN,
/* 129 */ SDL_SCANCODE_UNKNOWN,
/* 130 */ SDL_SCANCODE_UNKNOWN,
/* 131 */ SDL_SCANCODE_UNKNOWN,
/* 132 */ SDL_SCANCODE_POWER,
/* 133 */ SDL_SCANCODE_MUTE,
/* 134 */ SDL_SCANCODE_VOLUMEDOWN,
/* 135 */ SDL_SCANCODE_VOLUMEUP,
/* 136 */ SDL_SCANCODE_HELP,
/* 137 */ SDL_SCANCODE_STOP,
/* 138 */ SDL_SCANCODE_AGAIN,
/* 139 */ SDL_SCANCODE_UNKNOWN, /* PROPS */
/* 140 */ SDL_SCANCODE_UNDO,
/* 141 */ SDL_SCANCODE_UNKNOWN, /* FRONT */
/* 142 */ SDL_SCANCODE_COPY,
/* 143 */ SDL_SCANCODE_UNKNOWN, /* OPEN */
/* 144 */ SDL_SCANCODE_PASTE,
/* 145 */ SDL_SCANCODE_FIND,
/* 146 */ SDL_SCANCODE_CUT,
};
/* for wireless usb keyboard (manufacturer TRUST) without numpad. */
static const SDL_Scancode xfree86_scancode_table2[] = {
/* 0 */ SDL_SCANCODE_UNKNOWN,
/* 1 */ SDL_SCANCODE_ESCAPE,
/* 2 */ SDL_SCANCODE_1,
/* 3 */ SDL_SCANCODE_2,
/* 4 */ SDL_SCANCODE_3,
/* 5 */ SDL_SCANCODE_4,
/* 6 */ SDL_SCANCODE_5,
/* 7 */ SDL_SCANCODE_6,
/* 8 */ SDL_SCANCODE_7,
/* 9 */ SDL_SCANCODE_8,
/* 10 */ SDL_SCANCODE_9,
/* 11 */ SDL_SCANCODE_0,
/* 12 */ SDL_SCANCODE_MINUS,
/* 13 */ SDL_SCANCODE_EQUALS,
/* 14 */ SDL_SCANCODE_BACKSPACE,
/* 15 */ SDL_SCANCODE_TAB,
/* 16 */ SDL_SCANCODE_Q,
/* 17 */ SDL_SCANCODE_W,
/* 18 */ SDL_SCANCODE_E,
/* 19 */ SDL_SCANCODE_R,
/* 20 */ SDL_SCANCODE_T,
/* 21 */ SDL_SCANCODE_Y,
/* 22 */ SDL_SCANCODE_U,
/* 23 */ SDL_SCANCODE_I,
/* 24 */ SDL_SCANCODE_O,
/* 25 */ SDL_SCANCODE_P,
/* 26 */ SDL_SCANCODE_LEFTBRACKET,
/* 27 */ SDL_SCANCODE_RIGHTBRACKET,
/* 28 */ SDL_SCANCODE_RETURN,
/* 29 */ SDL_SCANCODE_LCTRL,
/* 30 */ SDL_SCANCODE_A,
/* 31 */ SDL_SCANCODE_S,
/* 32 */ SDL_SCANCODE_D,
/* 33 */ SDL_SCANCODE_F,
/* 34 */ SDL_SCANCODE_G,
/* 35 */ SDL_SCANCODE_H,
/* 36 */ SDL_SCANCODE_J,
/* 37 */ SDL_SCANCODE_K,
/* 38 */ SDL_SCANCODE_L,
/* 39 */ SDL_SCANCODE_SEMICOLON,
/* 40 */ SDL_SCANCODE_APOSTROPHE,
/* 41 */ SDL_SCANCODE_GRAVE,
/* 42 */ SDL_SCANCODE_LSHIFT,
/* 43 */ SDL_SCANCODE_BACKSLASH,
/* 44 */ SDL_SCANCODE_Z,
/* 45 */ SDL_SCANCODE_X,
/* 46 */ SDL_SCANCODE_C,
/* 47 */ SDL_SCANCODE_V,
/* 48 */ SDL_SCANCODE_B,
/* 49 */ SDL_SCANCODE_N,
/* 50 */ SDL_SCANCODE_M,
/* 51 */ SDL_SCANCODE_COMMA,
/* 52 */ SDL_SCANCODE_PERIOD,
/* 53 */ SDL_SCANCODE_SLASH,
/* 54 */ SDL_SCANCODE_RSHIFT,
/* 55 */ SDL_SCANCODE_KP_MULTIPLY,
/* 56 */ SDL_SCANCODE_LALT,
/* 57 */ SDL_SCANCODE_SPACE,
/* 58 */ SDL_SCANCODE_CAPSLOCK,
/* 59 */ SDL_SCANCODE_F1,
/* 60 */ SDL_SCANCODE_F2,
/* 61 */ SDL_SCANCODE_F3,
/* 62 */ SDL_SCANCODE_F4,
/* 63 */ SDL_SCANCODE_F5,
/* 64 */ SDL_SCANCODE_F6,
/* 65 */ SDL_SCANCODE_F7,
/* 66 */ SDL_SCANCODE_F8,
/* 67 */ SDL_SCANCODE_F9,
/* 68 */ SDL_SCANCODE_F10,
/* 69 */ SDL_SCANCODE_NUMLOCKCLEAR,
/* 70 */ SDL_SCANCODE_SCROLLLOCK,
/* 71 */ SDL_SCANCODE_KP_7,
/* 72 */ SDL_SCANCODE_KP_8,
/* 73 */ SDL_SCANCODE_KP_9,
/* 74 */ SDL_SCANCODE_KP_MINUS,
/* 75 */ SDL_SCANCODE_KP_4,
/* 76 */ SDL_SCANCODE_KP_5,
/* 77 */ SDL_SCANCODE_KP_6,
/* 78 */ SDL_SCANCODE_KP_PLUS,
/* 79 */ SDL_SCANCODE_KP_1,
/* 80 */ SDL_SCANCODE_KP_2,
/* 81 */ SDL_SCANCODE_KP_3,
/* 82 */ SDL_SCANCODE_KP_0,
/* 83 */ SDL_SCANCODE_KP_PERIOD,
/* 84 */ SDL_SCANCODE_SYSREQ, /* ???? */
/* 85 */ SDL_SCANCODE_MODE, /* ???? */
/* 86 */ SDL_SCANCODE_NONUSBACKSLASH,
/* 87 */ SDL_SCANCODE_F11,
/* 88 */ SDL_SCANCODE_F12,
/* 89 */ SDL_SCANCODE_UNKNOWN,
/* 90 */ SDL_SCANCODE_UNKNOWN, /* Katakana */
/* 91 */ SDL_SCANCODE_UNKNOWN, /* Hiragana */
/* 92 */ SDL_SCANCODE_UNKNOWN, /* Henkan_Mode */
/* 93 */ SDL_SCANCODE_UNKNOWN, /* Hiragana_Katakana */
/* 94 */ SDL_SCANCODE_UNKNOWN, /* Muhenkan */
/* 95 */ SDL_SCANCODE_UNKNOWN,
/* 96 */ SDL_SCANCODE_KP_ENTER,
/* 97 */ SDL_SCANCODE_RCTRL,
/* 98 */ SDL_SCANCODE_KP_DIVIDE,
/* 99 */ SDL_SCANCODE_PRINTSCREEN,
/* 100 */ SDL_SCANCODE_RALT, /* ISO_Level3_Shift, ALTGR, RALT */
/* 101 */ SDL_SCANCODE_UNKNOWN, /* Linefeed */
/* 102 */ SDL_SCANCODE_HOME,
/* 103 */ SDL_SCANCODE_UP,
/* 104 */ SDL_SCANCODE_PAGEUP,
/* 105 */ SDL_SCANCODE_LEFT,
/* 106 */ SDL_SCANCODE_RIGHT,
/* 107 */ SDL_SCANCODE_END,
/* 108 */ SDL_SCANCODE_DOWN,
/* 109 */ SDL_SCANCODE_PAGEDOWN,
/* 110 */ SDL_SCANCODE_INSERT,
/* 111 */ SDL_SCANCODE_DELETE,
/* 112 */ SDL_SCANCODE_UNKNOWN,
/* 113 */ SDL_SCANCODE_MUTE,
/* 114 */ SDL_SCANCODE_VOLUMEDOWN,
/* 115 */ SDL_SCANCODE_VOLUMEUP,
/* 116 */ SDL_SCANCODE_POWER,
/* 117 */ SDL_SCANCODE_KP_EQUALS,
/* 118 */ SDL_SCANCODE_UNKNOWN, /* plusminus */
/* 119 */ SDL_SCANCODE_PAUSE,
/* 120 */ SDL_SCANCODE_UNKNOWN, /* XF86LaunchA */
/* 121 */ SDL_SCANCODE_UNKNOWN, /* KP_Decimal */
/* 122 */ SDL_SCANCODE_UNKNOWN, /* Hangul */
/* 123 */ SDL_SCANCODE_UNKNOWN, /* Hangul_Hanja */
/* 124 */ SDL_SCANCODE_UNKNOWN,
/* 125 */ SDL_SCANCODE_LGUI,
/* 126 */ SDL_SCANCODE_RGUI,
/* 127 */ SDL_SCANCODE_APPLICATION,
/* 128 */ SDL_SCANCODE_CANCEL,
/* 129 */ SDL_SCANCODE_AGAIN,
/* 130 */ SDL_SCANCODE_UNKNOWN, /* SunProps */
/* 131 */ SDL_SCANCODE_UNDO,
/* 132 */ SDL_SCANCODE_UNKNOWN, /* SunFront */
/* 133 */ SDL_SCANCODE_COPY,
/* 134 */ SDL_SCANCODE_UNKNOWN, /* SunOpen */
/* 135 */ SDL_SCANCODE_PASTE,
/* 136 */ SDL_SCANCODE_FIND,
/* 137 */ SDL_SCANCODE_CUT,
/* 138 */ SDL_SCANCODE_HELP,
/* 139 */ SDL_SCANCODE_UNKNOWN, /* XF86MenuKB */
/* 140 */ SDL_SCANCODE_CALCULATOR,
/* 141 */ SDL_SCANCODE_UNKNOWN,
/* 142 */ SDL_SCANCODE_SLEEP,
/* 143 */ SDL_SCANCODE_UNKNOWN, /* XF86WakeUp */
/* 144 */ SDL_SCANCODE_UNKNOWN, /* XF86Explorer */
/* 145 */ SDL_SCANCODE_UNKNOWN, /* XF86Send */
/* 146 */ SDL_SCANCODE_UNKNOWN,
/* 147 */ SDL_SCANCODE_UNKNOWN, /* XF86Xfer */
/* 148 */ SDL_SCANCODE_APP1, /* XF86Launch1 */
/* 149 */ SDL_SCANCODE_APP2, /* XF86Launch2 */
/* 150 */ SDL_SCANCODE_WWW,
/* 151 */ SDL_SCANCODE_UNKNOWN, /* XF86DOS */
/* 152 */ SDL_SCANCODE_UNKNOWN, /* XF86ScreenSaver */
/* 153 */ SDL_SCANCODE_UNKNOWN,
/* 154 */ SDL_SCANCODE_UNKNOWN, /* XF86RotateWindows */
/* 155 */ SDL_SCANCODE_MAIL,
/* 156 */ SDL_SCANCODE_AC_BOOKMARKS, /* XF86Favorites */
/* 157 */ SDL_SCANCODE_COMPUTER,
/* 158 */ SDL_SCANCODE_AC_BACK,
/* 159 */ SDL_SCANCODE_AC_FORWARD,
/* 160 */ SDL_SCANCODE_UNKNOWN,
/* 161 */ SDL_SCANCODE_EJECT,
/* 162 */ SDL_SCANCODE_EJECT,
/* 163 */ SDL_SCANCODE_AUDIONEXT,
/* 164 */ SDL_SCANCODE_AUDIOPLAY,
/* 165 */ SDL_SCANCODE_AUDIOPREV,
/* 166 */ SDL_SCANCODE_AUDIOSTOP,
/* 167 */ SDL_SCANCODE_UNKNOWN, /* XF86AudioRecord */
/* 168 */ SDL_SCANCODE_UNKNOWN, /* XF86AudioRewind */
/* 169 */ SDL_SCANCODE_UNKNOWN, /* XF86Phone */
/* 170 */ SDL_SCANCODE_UNKNOWN,
/* 171 */ SDL_SCANCODE_F13, /* XF86Tools */
/* 172 */ SDL_SCANCODE_AC_HOME,
/* 173 */ SDL_SCANCODE_AC_REFRESH,
/* 174 */ SDL_SCANCODE_UNKNOWN, /* XF86Close */
/* 175 */ SDL_SCANCODE_UNKNOWN,
/* 176 */ SDL_SCANCODE_UNKNOWN,
/* 177 */ SDL_SCANCODE_UNKNOWN, /* XF86ScrollUp */
/* 178 */ SDL_SCANCODE_UNKNOWN, /* XF86ScrollDown */
/* 179 */ SDL_SCANCODE_UNKNOWN, /* parenleft */
/* 180 */ SDL_SCANCODE_UNKNOWN, /* parenright */
/* 181 */ SDL_SCANCODE_UNKNOWN, /* XF86New */
/* 182 */ SDL_SCANCODE_AGAIN,
/* 183 */ SDL_SCANCODE_F13, /* XF86Tools */
/* 184 */ SDL_SCANCODE_F14, /* XF86Launch5 */
/* 185 */ SDL_SCANCODE_F15, /* XF86Launch6 */
/* 186 */ SDL_SCANCODE_F16, /* XF86Launch7 */
/* 187 */ SDL_SCANCODE_F17, /* XF86Launch8 */
/* 188 */ SDL_SCANCODE_F18, /* XF86Launch9 */
/* 189 */ SDL_SCANCODE_F19, /* null keysym */
/* 190 */ SDL_SCANCODE_UNKNOWN,
/* 191 */ SDL_SCANCODE_UNKNOWN,
/* 192 */ SDL_SCANCODE_UNKNOWN, /* XF86TouchpadToggle */
/* 193 */ SDL_SCANCODE_UNKNOWN,
/* 194 */ SDL_SCANCODE_UNKNOWN,
/* 195 */ SDL_SCANCODE_MODE,
/* 196 */ SDL_SCANCODE_UNKNOWN,
/* 197 */ SDL_SCANCODE_UNKNOWN,
/* 198 */ SDL_SCANCODE_UNKNOWN,
/* 199 */ SDL_SCANCODE_UNKNOWN,
/* 200 */ SDL_SCANCODE_AUDIOPLAY,
/* 201 */ SDL_SCANCODE_UNKNOWN, /* XF86AudioPause */
/* 202 */ SDL_SCANCODE_UNKNOWN, /* XF86Launch3 */
/* 203 */ SDL_SCANCODE_UNKNOWN, /* XF86Launch4 */
/* 204 */ SDL_SCANCODE_UNKNOWN, /* XF86LaunchB */
/* 205 */ SDL_SCANCODE_UNKNOWN, /* XF86Suspend */
/* 206 */ SDL_SCANCODE_UNKNOWN, /* XF86Close */
/* 207 */ SDL_SCANCODE_AUDIOPLAY,
/* 208 */ SDL_SCANCODE_AUDIONEXT,
/* 209 */ SDL_SCANCODE_UNKNOWN,
/* 210 */ SDL_SCANCODE_PRINTSCREEN,
/* 211 */ SDL_SCANCODE_UNKNOWN,
/* 212 */ SDL_SCANCODE_UNKNOWN, /* XF86WebCam */
/* 213 */ SDL_SCANCODE_UNKNOWN,
/* 214 */ SDL_SCANCODE_UNKNOWN,
/* 215 */ SDL_SCANCODE_MAIL,
/* 216 */ SDL_SCANCODE_UNKNOWN,
/* 217 */ SDL_SCANCODE_AC_SEARCH,
/* 218 */ SDL_SCANCODE_UNKNOWN,
/* 219 */ SDL_SCANCODE_UNKNOWN, /* XF86Finance */
/* 220 */ SDL_SCANCODE_UNKNOWN,
/* 221 */ SDL_SCANCODE_UNKNOWN, /* XF86Shop */
/* 222 */ SDL_SCANCODE_UNKNOWN,
/* 223 */ SDL_SCANCODE_STOP,
/* 224 */ SDL_SCANCODE_BRIGHTNESSDOWN,
/* 225 */ SDL_SCANCODE_BRIGHTNESSUP,
/* 226 */ SDL_SCANCODE_MEDIASELECT,
/* 227 */ SDL_SCANCODE_DISPLAYSWITCH,
/* 228 */ SDL_SCANCODE_KBDILLUMTOGGLE,
/* 229 */ SDL_SCANCODE_KBDILLUMDOWN,
/* 230 */ SDL_SCANCODE_KBDILLUMUP,
/* 231 */ SDL_SCANCODE_UNKNOWN, /* XF86Send */
/* 232 */ SDL_SCANCODE_UNKNOWN, /* XF86Reply */
/* 233 */ SDL_SCANCODE_UNKNOWN, /* XF86MailForward */
/* 234 */ SDL_SCANCODE_UNKNOWN, /* XF86Save */
/* 235 */ SDL_SCANCODE_UNKNOWN, /* XF86Documents */
/* 236 */ SDL_SCANCODE_UNKNOWN, /* XF86Battery */
/* 237 */ SDL_SCANCODE_UNKNOWN, /* XF86Bluetooth */
/* 238 */ SDL_SCANCODE_UNKNOWN, /* XF86WLAN */
};
/* *INDENT-ON* */

757
src/file/SDL_rwops.c Normal file
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@@ -0,0 +1,757 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* Need this so Linux systems define fseek64o, ftell64o and off64_t */
#define _LARGEFILE64_SOURCE
#include "SDL_config.h"
/* This file provides a general interface for SDL to read and write
data sources. It can easily be extended to files, memory, etc.
*/
#include "SDL_endian.h"
#include "SDL_rwops.h"
#ifdef __APPLE__
#include "cocoa/SDL_rwopsbundlesupport.h"
#endif /* __APPLE__ */
#ifdef ANDROID
#include "../core/android/SDL_android.h"
#include "SDL_system.h"
#endif
#ifdef __WIN32__
/* Functions to read/write Win32 API file pointers */
#include "../core/windows/SDL_windows.h"
#ifndef INVALID_SET_FILE_POINTER
#define INVALID_SET_FILE_POINTER 0xFFFFFFFF
#endif
#define READAHEAD_BUFFER_SIZE 1024
static int SDLCALL
windows_file_open(SDL_RWops * context, const char *filename, const char *mode)
{
UINT old_error_mode;
HANDLE h;
DWORD r_right, w_right;
DWORD must_exist, truncate;
int a_mode;
if (!context)
return -1; /* failed (invalid call) */
context->hidden.windowsio.h = INVALID_HANDLE_VALUE; /* mark this as unusable */
context->hidden.windowsio.buffer.data = NULL;
context->hidden.windowsio.buffer.size = 0;
context->hidden.windowsio.buffer.left = 0;
/* "r" = reading, file must exist */
/* "w" = writing, truncate existing, file may not exist */
/* "r+"= reading or writing, file must exist */
/* "a" = writing, append file may not exist */
/* "a+"= append + read, file may not exist */
/* "w+" = read, write, truncate. file may not exist */
must_exist = (SDL_strchr(mode, 'r') != NULL) ? OPEN_EXISTING : 0;
truncate = (SDL_strchr(mode, 'w') != NULL) ? CREATE_ALWAYS : 0;
r_right = (SDL_strchr(mode, '+') != NULL
|| must_exist) ? GENERIC_READ : 0;
a_mode = (SDL_strchr(mode, 'a') != NULL) ? OPEN_ALWAYS : 0;
w_right = (a_mode || SDL_strchr(mode, '+')
|| truncate) ? GENERIC_WRITE : 0;
if (!r_right && !w_right) /* inconsistent mode */
return -1; /* failed (invalid call) */
context->hidden.windowsio.buffer.data =
(char *) SDL_malloc(READAHEAD_BUFFER_SIZE);
if (!context->hidden.windowsio.buffer.data) {
return SDL_OutOfMemory();
}
/* Do not open a dialog box if failure */
old_error_mode =
SetErrorMode(SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS);
{
LPTSTR tstr = WIN_UTF8ToString(filename);
h = CreateFile(tstr, (w_right | r_right),
(w_right) ? 0 : FILE_SHARE_READ, NULL,
(must_exist | truncate | a_mode),
FILE_ATTRIBUTE_NORMAL, NULL);
SDL_free(tstr);
}
/* restore old behavior */
SetErrorMode(old_error_mode);
if (h == INVALID_HANDLE_VALUE) {
SDL_free(context->hidden.windowsio.buffer.data);
context->hidden.windowsio.buffer.data = NULL;
SDL_SetError("Couldn't open %s", filename);
return -2; /* failed (CreateFile) */
}
context->hidden.windowsio.h = h;
context->hidden.windowsio.append = a_mode ? SDL_TRUE : SDL_FALSE;
return 0; /* ok */
}
static Sint64 SDLCALL
windows_file_size(SDL_RWops * context)
{
LARGE_INTEGER size;
if (!context || context->hidden.windowsio.h == INVALID_HANDLE_VALUE) {
return SDL_SetError("windows_file_size: invalid context/file not opened");
}
if (!GetFileSizeEx(context->hidden.windowsio.h, &size)) {
return WIN_SetError("windows_file_size");
}
return size.QuadPart;
}
static Sint64 SDLCALL
windows_file_seek(SDL_RWops * context, Sint64 offset, int whence)
{
DWORD windowswhence;
LARGE_INTEGER windowsoffset;
if (!context || context->hidden.windowsio.h == INVALID_HANDLE_VALUE) {
return SDL_SetError("windows_file_seek: invalid context/file not opened");
}
/* FIXME: We may be able to satisfy the seek within buffered data */
if (whence == RW_SEEK_CUR && context->hidden.windowsio.buffer.left) {
offset -= (long)context->hidden.windowsio.buffer.left;
}
context->hidden.windowsio.buffer.left = 0;
switch (whence) {
case RW_SEEK_SET:
windowswhence = FILE_BEGIN;
break;
case RW_SEEK_CUR:
windowswhence = FILE_CURRENT;
break;
case RW_SEEK_END:
windowswhence = FILE_END;
break;
default:
return SDL_SetError("windows_file_seek: Unknown value for 'whence'");
}
windowsoffset.QuadPart = offset;
if (!SetFilePointerEx(context->hidden.windowsio.h, windowsoffset, &windowsoffset, windowswhence)) {
return WIN_SetError("windows_file_seek");
}
return windowsoffset.QuadPart;
}
static size_t SDLCALL
windows_file_read(SDL_RWops * context, void *ptr, size_t size, size_t maxnum)
{
size_t total_need;
size_t total_read = 0;
size_t read_ahead;
DWORD byte_read;
total_need = size * maxnum;
if (!context || context->hidden.windowsio.h == INVALID_HANDLE_VALUE
|| !total_need)
return 0;
if (context->hidden.windowsio.buffer.left > 0) {
void *data = (char *) context->hidden.windowsio.buffer.data +
context->hidden.windowsio.buffer.size -
context->hidden.windowsio.buffer.left;
read_ahead =
SDL_min(total_need, context->hidden.windowsio.buffer.left);
SDL_memcpy(ptr, data, read_ahead);
context->hidden.windowsio.buffer.left -= read_ahead;
if (read_ahead == total_need) {
return maxnum;
}
ptr = (char *) ptr + read_ahead;
total_need -= read_ahead;
total_read += read_ahead;
}
if (total_need < READAHEAD_BUFFER_SIZE) {
if (!ReadFile
(context->hidden.windowsio.h, context->hidden.windowsio.buffer.data,
READAHEAD_BUFFER_SIZE, &byte_read, NULL)) {
SDL_Error(SDL_EFREAD);
return 0;
}
read_ahead = SDL_min(total_need, (int) byte_read);
SDL_memcpy(ptr, context->hidden.windowsio.buffer.data, read_ahead);
context->hidden.windowsio.buffer.size = byte_read;
context->hidden.windowsio.buffer.left = byte_read - read_ahead;
total_read += read_ahead;
} else {
if (!ReadFile
(context->hidden.windowsio.h, ptr, (DWORD)total_need, &byte_read, NULL)) {
SDL_Error(SDL_EFREAD);
return 0;
}
total_read += byte_read;
}
return (total_read / size);
}
static size_t SDLCALL
windows_file_write(SDL_RWops * context, const void *ptr, size_t size,
size_t num)
{
size_t total_bytes;
DWORD byte_written;
size_t nwritten;
total_bytes = size * num;
if (!context || context->hidden.windowsio.h == INVALID_HANDLE_VALUE
|| total_bytes <= 0 || !size)
return 0;
if (context->hidden.windowsio.buffer.left) {
SetFilePointer(context->hidden.windowsio.h,
-(LONG)context->hidden.windowsio.buffer.left, NULL,
FILE_CURRENT);
context->hidden.windowsio.buffer.left = 0;
}
/* if in append mode, we must go to the EOF before write */
if (context->hidden.windowsio.append) {
if (SetFilePointer(context->hidden.windowsio.h, 0L, NULL, FILE_END) ==
INVALID_SET_FILE_POINTER) {
SDL_Error(SDL_EFWRITE);
return 0;
}
}
if (!WriteFile
(context->hidden.windowsio.h, ptr, (DWORD)total_bytes, &byte_written, NULL)) {
SDL_Error(SDL_EFWRITE);
return 0;
}
nwritten = byte_written / size;
return nwritten;
}
static int SDLCALL
windows_file_close(SDL_RWops * context)
{
if (context) {
if (context->hidden.windowsio.h != INVALID_HANDLE_VALUE) {
CloseHandle(context->hidden.windowsio.h);
context->hidden.windowsio.h = INVALID_HANDLE_VALUE; /* to be sure */
}
if (context->hidden.windowsio.buffer.data) {
SDL_free(context->hidden.windowsio.buffer.data);
context->hidden.windowsio.buffer.data = NULL;
}
SDL_FreeRW(context);
}
return (0);
}
#endif /* __WIN32__ */
#ifdef HAVE_STDIO_H
/* Functions to read/write stdio file pointers */
static Sint64 SDLCALL
stdio_size(SDL_RWops * context)
{
Sint64 pos, size;
pos = SDL_RWseek(context, 0, RW_SEEK_CUR);
if (pos < 0) {
return -1;
}
size = SDL_RWseek(context, 0, RW_SEEK_END);
SDL_RWseek(context, pos, RW_SEEK_SET);
return size;
}
static Sint64 SDLCALL
stdio_seek(SDL_RWops * context, Sint64 offset, int whence)
{
#ifdef HAVE_FSEEKO64
if (fseeko64(context->hidden.stdio.fp, (off64_t)offset, whence) == 0) {
return ftello64(context->hidden.stdio.fp);
}
#elif defined(HAVE_FSEEKO)
if (fseeko(context->hidden.stdio.fp, (off_t)offset, whence) == 0) {
return ftello(context->hidden.stdio.fp);
}
#else
if (fseek(context->hidden.stdio.fp, offset, whence) == 0) {
return (ftell(context->hidden.stdio.fp));
}
#endif
return SDL_Error(SDL_EFSEEK);
}
static size_t SDLCALL
stdio_read(SDL_RWops * context, void *ptr, size_t size, size_t maxnum)
{
size_t nread;
nread = fread(ptr, size, maxnum, context->hidden.stdio.fp);
if (nread == 0 && ferror(context->hidden.stdio.fp)) {
SDL_Error(SDL_EFREAD);
}
return (nread);
}
static size_t SDLCALL
stdio_write(SDL_RWops * context, const void *ptr, size_t size, size_t num)
{
size_t nwrote;
nwrote = fwrite(ptr, size, num, context->hidden.stdio.fp);
if (nwrote == 0 && ferror(context->hidden.stdio.fp)) {
SDL_Error(SDL_EFWRITE);
}
return (nwrote);
}
static int SDLCALL
stdio_close(SDL_RWops * context)
{
int status = 0;
if (context) {
if (context->hidden.stdio.autoclose) {
/* WARNING: Check the return value here! */
if (fclose(context->hidden.stdio.fp) != 0) {
status = SDL_Error(SDL_EFWRITE);
}
}
SDL_FreeRW(context);
}
return status;
}
#endif /* !HAVE_STDIO_H */
/* Functions to read/write memory pointers */
static Sint64 SDLCALL
mem_size(SDL_RWops * context)
{
return (Sint64)(context->hidden.mem.stop - context->hidden.mem.base);
}
static Sint64 SDLCALL
mem_seek(SDL_RWops * context, Sint64 offset, int whence)
{
Uint8 *newpos;
switch (whence) {
case RW_SEEK_SET:
newpos = context->hidden.mem.base + offset;
break;
case RW_SEEK_CUR:
newpos = context->hidden.mem.here + offset;
break;
case RW_SEEK_END:
newpos = context->hidden.mem.stop + offset;
break;
default:
return SDL_SetError("Unknown value for 'whence'");
}
if (newpos < context->hidden.mem.base) {
newpos = context->hidden.mem.base;
}
if (newpos > context->hidden.mem.stop) {
newpos = context->hidden.mem.stop;
}
context->hidden.mem.here = newpos;
return (Sint64)(context->hidden.mem.here - context->hidden.mem.base);
}
static size_t SDLCALL
mem_read(SDL_RWops * context, void *ptr, size_t size, size_t maxnum)
{
size_t total_bytes;
size_t mem_available;
total_bytes = (maxnum * size);
if ((maxnum <= 0) || (size <= 0)
|| ((total_bytes / maxnum) != (size_t) size)) {
return 0;
}
mem_available = (context->hidden.mem.stop - context->hidden.mem.here);
if (total_bytes > mem_available) {
total_bytes = mem_available;
}
SDL_memcpy(ptr, context->hidden.mem.here, total_bytes);
context->hidden.mem.here += total_bytes;
return (total_bytes / size);
}
static size_t SDLCALL
mem_write(SDL_RWops * context, const void *ptr, size_t size, size_t num)
{
if ((context->hidden.mem.here + (num * size)) > context->hidden.mem.stop) {
num = (context->hidden.mem.stop - context->hidden.mem.here) / size;
}
SDL_memcpy(context->hidden.mem.here, ptr, num * size);
context->hidden.mem.here += num * size;
return (num);
}
static size_t SDLCALL
mem_writeconst(SDL_RWops * context, const void *ptr, size_t size, size_t num)
{
SDL_SetError("Can't write to read-only memory");
return (0);
}
static int SDLCALL
mem_close(SDL_RWops * context)
{
if (context) {
SDL_FreeRW(context);
}
return (0);
}
/* Functions to create SDL_RWops structures from various data sources */
SDL_RWops *
SDL_RWFromFile(const char *file, const char *mode)
{
SDL_RWops *rwops = NULL;
if (!file || !*file || !mode || !*mode) {
SDL_SetError("SDL_RWFromFile(): No file or no mode specified");
return NULL;
}
#if defined(ANDROID)
#ifdef HAVE_STDIO_H
/* Try to open the file on the filesystem first */
if (*file == '/') {
FILE *fp = fopen(file, mode);
if (fp) {
return SDL_RWFromFP(fp, 1);
}
} else {
/* Try opening it from internal storage if it's a relative path */
char *path;
FILE *fp;
path = SDL_stack_alloc(char, PATH_MAX);
if (path) {
SDL_snprintf(path, PATH_MAX, "%s/%s",
SDL_AndroidGetInternalStoragePath(), file);
fp = fopen(path, mode);
SDL_stack_free(path);
if (fp) {
return SDL_RWFromFP(fp, 1);
}
}
}
#endif /* HAVE_STDIO_H */
/* Try to open the file from the asset system */
rwops = SDL_AllocRW();
if (!rwops)
return NULL; /* SDL_SetError already setup by SDL_AllocRW() */
if (Android_JNI_FileOpen(rwops, file, mode) < 0) {
SDL_FreeRW(rwops);
return NULL;
}
rwops->size = Android_JNI_FileSize;
rwops->seek = Android_JNI_FileSeek;
rwops->read = Android_JNI_FileRead;
rwops->write = Android_JNI_FileWrite;
rwops->close = Android_JNI_FileClose;
rwops->type = SDL_RWOPS_JNIFILE;
#elif defined(__WIN32__)
rwops = SDL_AllocRW();
if (!rwops)
return NULL; /* SDL_SetError already setup by SDL_AllocRW() */
if (windows_file_open(rwops, file, mode) < 0) {
SDL_FreeRW(rwops);
return NULL;
}
rwops->size = windows_file_size;
rwops->seek = windows_file_seek;
rwops->read = windows_file_read;
rwops->write = windows_file_write;
rwops->close = windows_file_close;
rwops->type = SDL_RWOPS_WINFILE;
#elif HAVE_STDIO_H
{
#ifdef __APPLE__
FILE *fp = SDL_OpenFPFromBundleOrFallback(file, mode);
#else
FILE *fp = fopen(file, mode);
#endif
if (fp == NULL) {
SDL_SetError("Couldn't open %s", file);
} else {
rwops = SDL_RWFromFP(fp, 1);
}
}
#else
SDL_SetError("SDL not compiled with stdio support");
#endif /* !HAVE_STDIO_H */
return (rwops);
}
#ifdef HAVE_STDIO_H
SDL_RWops *
SDL_RWFromFP(FILE * fp, SDL_bool autoclose)
{
SDL_RWops *rwops = NULL;
rwops = SDL_AllocRW();
if (rwops != NULL) {
rwops->size = stdio_size;
rwops->seek = stdio_seek;
rwops->read = stdio_read;
rwops->write = stdio_write;
rwops->close = stdio_close;
rwops->hidden.stdio.fp = fp;
rwops->hidden.stdio.autoclose = autoclose;
rwops->type = SDL_RWOPS_STDFILE;
}
return (rwops);
}
#else
SDL_RWops *
SDL_RWFromFP(void * fp, SDL_bool autoclose)
{
SDL_SetError("SDL not compiled with stdio support");
return NULL;
}
#endif /* HAVE_STDIO_H */
SDL_RWops *
SDL_RWFromMem(void *mem, int size)
{
SDL_RWops *rwops = NULL;
if (!mem) {
SDL_InvalidParamError("mem");
return (rwops);
}
if (!size) {
SDL_InvalidParamError("size");
return (rwops);
}
rwops = SDL_AllocRW();
if (rwops != NULL) {
rwops->size = mem_size;
rwops->seek = mem_seek;
rwops->read = mem_read;
rwops->write = mem_write;
rwops->close = mem_close;
rwops->hidden.mem.base = (Uint8 *) mem;
rwops->hidden.mem.here = rwops->hidden.mem.base;
rwops->hidden.mem.stop = rwops->hidden.mem.base + size;
rwops->type = SDL_RWOPS_MEMORY;
}
return (rwops);
}
SDL_RWops *
SDL_RWFromConstMem(const void *mem, int size)
{
SDL_RWops *rwops = NULL;
if (!mem) {
SDL_InvalidParamError("mem");
return (rwops);
}
if (!size) {
SDL_InvalidParamError("size");
return (rwops);
}
rwops = SDL_AllocRW();
if (rwops != NULL) {
rwops->size = mem_size;
rwops->seek = mem_seek;
rwops->read = mem_read;
rwops->write = mem_writeconst;
rwops->close = mem_close;
rwops->hidden.mem.base = (Uint8 *) mem;
rwops->hidden.mem.here = rwops->hidden.mem.base;
rwops->hidden.mem.stop = rwops->hidden.mem.base + size;
rwops->type = SDL_RWOPS_MEMORY_RO;
}
return (rwops);
}
SDL_RWops *
SDL_AllocRW(void)
{
SDL_RWops *area;
area = (SDL_RWops *) SDL_malloc(sizeof *area);
if (area == NULL) {
SDL_OutOfMemory();
} else {
area->type = SDL_RWOPS_UNKNOWN;
}
return (area);
}
void
SDL_FreeRW(SDL_RWops * area)
{
SDL_free(area);
}
/* Functions for dynamically reading and writing endian-specific values */
Uint8
SDL_ReadU8(SDL_RWops * src)
{
Uint8 value = 0;
SDL_RWread(src, &value, (sizeof value), 1);
return value;
}
Uint16
SDL_ReadLE16(SDL_RWops * src)
{
Uint16 value = 0;
SDL_RWread(src, &value, (sizeof value), 1);
return (SDL_SwapLE16(value));
}
Uint16
SDL_ReadBE16(SDL_RWops * src)
{
Uint16 value = 0;
SDL_RWread(src, &value, (sizeof value), 1);
return (SDL_SwapBE16(value));
}
Uint32
SDL_ReadLE32(SDL_RWops * src)
{
Uint32 value = 0;
SDL_RWread(src, &value, (sizeof value), 1);
return (SDL_SwapLE32(value));
}
Uint32
SDL_ReadBE32(SDL_RWops * src)
{
Uint32 value = 0;
SDL_RWread(src, &value, (sizeof value), 1);
return (SDL_SwapBE32(value));
}
Uint64
SDL_ReadLE64(SDL_RWops * src)
{
Uint64 value = 0;
SDL_RWread(src, &value, (sizeof value), 1);
return (SDL_SwapLE64(value));
}
Uint64
SDL_ReadBE64(SDL_RWops * src)
{
Uint64 value = 0;
SDL_RWread(src, &value, (sizeof value), 1);
return (SDL_SwapBE64(value));
}
size_t
SDL_WriteU8(SDL_RWops * dst, Uint8 value)
{
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
size_t
SDL_WriteLE16(SDL_RWops * dst, Uint16 value)
{
value = SDL_SwapLE16(value);
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
size_t
SDL_WriteBE16(SDL_RWops * dst, Uint16 value)
{
value = SDL_SwapBE16(value);
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
size_t
SDL_WriteLE32(SDL_RWops * dst, Uint32 value)
{
value = SDL_SwapLE32(value);
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
size_t
SDL_WriteBE32(SDL_RWops * dst, Uint32 value)
{
value = SDL_SwapBE32(value);
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
size_t
SDL_WriteLE64(SDL_RWops * dst, Uint64 value)
{
value = SDL_SwapLE64(value);
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
size_t
SDL_WriteBE64(SDL_RWops * dst, Uint64 value)
{
value = SDL_SwapBE64(value);
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
/* vi: set ts=4 sw=4 expandtab: */

9
src/file/cocoa/SDL_rwopsbundlesupport.h Normal file
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#ifdef __APPLE__
#include <stdio.h>
#ifndef SDL_rwopsbundlesupport_h
#define SDL_rwopsbundlesupport_h
FILE* SDL_OpenFPFromBundleOrFallback(const char *file, const char *mode);
#endif
#endif

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src/file/cocoa/SDL_rwopsbundlesupport.m Normal file
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#ifdef __APPLE__
#import <Foundation/Foundation.h>
#include "SDL_rwopsbundlesupport.h"
/* For proper OS X applications, the resources are contained inside the application bundle.
So the strategy is to first check the application bundle for the file, then fallback to the current working directory.
Note: One additional corner-case is if the resource is in a framework's resource bundle instead of the app.
We might want to use bundle identifiers, e.g. org.libsdl.sdl to get the bundle for the framework,
but we would somehow need to know what the bundle identifiers we need to search are.
Also, note the bundle layouts are different for iPhone and Mac.
*/
FILE* SDL_OpenFPFromBundleOrFallback(const char *file, const char *mode)
{
FILE* fp = NULL;
/* If the file mode is writable, skip all the bundle stuff because generally the bundle is read-only. */
if(strcmp("r", mode) && strcmp("rb", mode))
{
return fopen(file, mode);
}
NSAutoreleasePool* autorelease_pool = [[NSAutoreleasePool alloc] init];
NSFileManager* file_manager = [NSFileManager defaultManager];
NSString* resource_path = [[NSBundle mainBundle] resourcePath];
NSString* ns_string_file_component = [file_manager stringWithFileSystemRepresentation:file length:strlen(file)];
NSString* full_path_with_file_to_try = [resource_path stringByAppendingPathComponent:ns_string_file_component];
if([file_manager fileExistsAtPath:full_path_with_file_to_try])
{
fp = fopen([full_path_with_file_to_try fileSystemRepresentation], mode);
}
else
{
fp = fopen(file, mode);
}
[autorelease_pool drain];
return fp;
}
#endif

840
src/haptic/SDL_haptic.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "SDL_syshaptic.h"
#include "SDL_haptic_c.h"
#include "../joystick/SDL_joystick_c.h" /* For SDL_PrivateJoystickValid */
#include "SDL_assert.h"
Uint8 SDL_numhaptics = 0;
SDL_Haptic **SDL_haptics = NULL;
/*
* Initializes the Haptic devices.
*/
int
SDL_HapticInit(void)
{
int arraylen;
int status;
SDL_numhaptics = 0;
status = SDL_SYS_HapticInit();
if (status >= 0) {
arraylen = (status + 1) * sizeof(*SDL_haptics);
SDL_haptics = (SDL_Haptic **) SDL_malloc(arraylen);
if (SDL_haptics == NULL) { /* Out of memory. */
SDL_numhaptics = 0;
} else {
SDL_memset(SDL_haptics, 0, arraylen);
SDL_numhaptics = status;
}
status = 0;
}
return status;
}
/*
* Checks to see if the haptic device is valid
*/
static int
ValidHaptic(SDL_Haptic * haptic)
{
int i;
int valid;
valid = 0;
if (haptic != NULL) {
for (i = 0; i < SDL_numhaptics; i++) {
if (SDL_haptics[i] == haptic) {
valid = 1;
break;
}
}
}
/* Create the error here. */
if (valid == 0) {
SDL_SetError("Haptic: Invalid haptic device identifier");
}
return valid;
}
/*
* Returns the number of available devices.
*/
int
SDL_NumHaptics(void)
{
return SDL_numhaptics;
}
/*
* Gets the name of a Haptic device by index.
*/
const char *
SDL_HapticName(int device_index)
{
if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
SDL_SetError("Haptic: There are %d haptic devices available",
SDL_numhaptics);
return NULL;
}
return SDL_SYS_HapticName(device_index);
}
/*
* Opens a Haptic device.
*/
SDL_Haptic *
SDL_HapticOpen(int device_index)
{
int i;
SDL_Haptic *haptic;
if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
SDL_SetError("Haptic: There are %d haptic devices available",
SDL_numhaptics);
return NULL;
}
/* If the haptic is already open, return it */
for (i = 0; SDL_haptics[i]; i++) {
if (device_index == SDL_haptics[i]->index) {
haptic = SDL_haptics[i];
++haptic->ref_count;
return haptic;
}
}
/* Create the haptic device */
haptic = (SDL_Haptic *) SDL_malloc((sizeof *haptic));
if (haptic == NULL) {
SDL_OutOfMemory();
return NULL;
}
/* Initialize the haptic device */
SDL_memset(haptic, 0, (sizeof *haptic));
haptic->rumble_id = -1;
haptic->index = device_index;
if (SDL_SYS_HapticOpen(haptic) < 0) {
SDL_free(haptic);
return NULL;
}
/* Add haptic to list */
for (i = 0; SDL_haptics[i]; i++)
/* Skip to next haptic */ ;
if (i >= SDL_numhaptics) {
SDL_free(haptic);
SDL_SetError("Haptic: Trying to add device past the number originally detected");
return NULL;
}
SDL_haptics[i] = haptic;
++haptic->ref_count;
/* Disable autocenter and set gain to max. */
if (haptic->supported & SDL_HAPTIC_GAIN)
SDL_HapticSetGain(haptic, 100);
if (haptic->supported & SDL_HAPTIC_AUTOCENTER)
SDL_HapticSetAutocenter(haptic, 0);
return haptic;
}
/*
* Returns 1 if the device has been opened.
*/
int
SDL_HapticOpened(int device_index)
{
int i, opened;
/* Make sure it's valid. */
if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
SDL_SetError("Haptic: There are %d haptic devices available",
SDL_numhaptics);
return 0;
}
opened = 0;
for (i = 0; SDL_haptics[i]; i++) {
if (SDL_haptics[i]->index == (Uint8) device_index) {
opened = 1;
break;
}
}
return opened;
}
/*
* Returns the index to a haptic device.
*/
int
SDL_HapticIndex(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return -1;
}
return haptic->index;
}
/*
* Returns SDL_TRUE if mouse is haptic, SDL_FALSE if it isn't.
*/
int
SDL_MouseIsHaptic(void)
{
if (SDL_SYS_HapticMouse() < 0)
return SDL_FALSE;
return SDL_TRUE;
}
/*
* Returns the haptic device if mouse is haptic or NULL elsewise.
*/
SDL_Haptic *
SDL_HapticOpenFromMouse(void)
{
int device_index;
device_index = SDL_SYS_HapticMouse();
if (device_index < 0) {
SDL_SetError("Haptic: Mouse isn't a haptic device.");
return NULL;
}
return SDL_HapticOpen(device_index);
}
/*
* Returns SDL_TRUE if joystick has haptic features.
*/
int
SDL_JoystickIsHaptic(SDL_Joystick * joystick)
{
int ret;
/* Must be a valid joystick */
if (!SDL_PrivateJoystickValid(joystick)) {
return -1;
}
ret = SDL_SYS_JoystickIsHaptic(joystick);
if (ret > 0)
return SDL_TRUE;
else if (ret == 0)
return SDL_FALSE;
else
return -1;
}
/*
* Opens a haptic device from a joystick.
*/
SDL_Haptic *
SDL_HapticOpenFromJoystick(SDL_Joystick * joystick)
{
int i;
SDL_Haptic *haptic;
/* Make sure there is room. */
if (SDL_numhaptics <= 0) {
SDL_SetError("Haptic: There are %d haptic devices available",
SDL_numhaptics);
return NULL;
}
/* Must be a valid joystick */
if (!SDL_PrivateJoystickValid(joystick)) {
SDL_SetError("Haptic: Joystick isn't valid.");
return NULL;
}
/* Joystick must be haptic */
if (SDL_SYS_JoystickIsHaptic(joystick) <= 0) {
SDL_SetError("Haptic: Joystick isn't a haptic device.");
return NULL;
}
/* Check to see if joystick's haptic is already open */
for (i = 0; SDL_haptics[i]; i++) {
if (SDL_SYS_JoystickSameHaptic(SDL_haptics[i], joystick)) {
haptic = SDL_haptics[i];
++haptic->ref_count;
return haptic;
}
}
/* Create the haptic device */
haptic = (SDL_Haptic *) SDL_malloc((sizeof *haptic));
if (haptic == NULL) {
SDL_OutOfMemory();
return NULL;
}
/* Initialize the haptic device */
SDL_memset(haptic, 0, sizeof(SDL_Haptic));
haptic->rumble_id = -1;
if (SDL_SYS_HapticOpenFromJoystick(haptic, joystick) < 0) {
SDL_free(haptic);
return NULL;
}
/* Add haptic to list */
for (i = 0; SDL_haptics[i]; i++)
/* Skip to next haptic */ ;
if (i >= SDL_numhaptics) {
SDL_free(haptic);
SDL_SetError("Haptic: Trying to add device past the number originally detected");
return NULL;
}
SDL_haptics[i] = haptic;
++haptic->ref_count;
return haptic;
}
/*
* Closes a SDL_Haptic device.
*/
void
SDL_HapticClose(SDL_Haptic * haptic)
{
int i;
/* Must be valid */
if (!ValidHaptic(haptic)) {
return;
}
/* Check if it's still in use */
if (--haptic->ref_count < 0) {
return;
}
/* Close it, properly removing effects if needed */
for (i = 0; i < haptic->neffects; i++) {
if (haptic->effects[i].hweffect != NULL) {
SDL_HapticDestroyEffect(haptic, i);
}
}
SDL_SYS_HapticClose(haptic);
/* Remove from the list */
for (i = 0; SDL_haptics[i]; ++i) {
if (haptic == SDL_haptics[i]) {
SDL_haptics[i] = NULL;
SDL_memcpy(&SDL_haptics[i], &SDL_haptics[i + 1],
(SDL_numhaptics - i) * sizeof(haptic));
break;
}
}
/* Free */
SDL_free(haptic);
}
/*
* Cleans up after the subsystem.
*/
void
SDL_HapticQuit(void)
{
SDL_SYS_HapticQuit();
if (SDL_haptics != NULL) {
SDL_free(SDL_haptics);
SDL_haptics = NULL;
}
SDL_numhaptics = 0;
}
/*
* Returns the number of effects a haptic device has.
*/
int
SDL_HapticNumEffects(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return -1;
}
return haptic->neffects;
}
/*
* Returns the number of effects a haptic device can play.
*/
int
SDL_HapticNumEffectsPlaying(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return -1;
}
return haptic->nplaying;
}
/*
* Returns supported effects by the device.
*/
unsigned int
SDL_HapticQuery(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return 0; /* same as if no effects were supported */
}
return haptic->supported;
}
/*
* Returns the number of axis on the device.
*/
int
SDL_HapticNumAxes(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return -1;
}
return haptic->naxes;
}
/*
* Checks to see if the device can support the effect.
*/
int
SDL_HapticEffectSupported(SDL_Haptic * haptic, SDL_HapticEffect * effect)
{
if (!ValidHaptic(haptic)) {
return -1;
}
if ((haptic->supported & effect->type) != 0)
return SDL_TRUE;
return SDL_FALSE;
}
/*
* Creates a new haptic effect.
*/
int
SDL_HapticNewEffect(SDL_Haptic * haptic, SDL_HapticEffect * effect)
{
int i;
/* Check for device validity. */
if (!ValidHaptic(haptic)) {
return -1;
}
/* Check to see if effect is supported */
if (SDL_HapticEffectSupported(haptic, effect) == SDL_FALSE) {
return SDL_SetError("Haptic: Effect not supported by haptic device.");
}
/* See if there's a free slot */
for (i = 0; i < haptic->neffects; i++) {
if (haptic->effects[i].hweffect == NULL) {
/* Now let the backend create the real effect */
if (SDL_SYS_HapticNewEffect(haptic, &haptic->effects[i], effect)
!= 0) {
return -1; /* Backend failed to create effect */
}
SDL_memcpy(&haptic->effects[i].effect, effect,
sizeof(SDL_HapticEffect));
return i;
}
}
return SDL_SetError("Haptic: Device has no free space left.");
}
/*
* Checks to see if an effect is valid.
*/
static int
ValidEffect(SDL_Haptic * haptic, int effect)
{
if ((effect < 0) || (effect >= haptic->neffects)) {
SDL_SetError("Haptic: Invalid effect identifier.");
return 0;
}
return 1;
}
/*
* Updates an effect.
*/
int
SDL_HapticUpdateEffect(SDL_Haptic * haptic, int effect,
SDL_HapticEffect * data)
{
if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
return -1;
}
/* Can't change type dynamically. */
if (data->type != haptic->effects[effect].effect.type) {
return SDL_SetError("Haptic: Updating effect type is illegal.");
}
/* Updates the effect */
if (SDL_SYS_HapticUpdateEffect(haptic, &haptic->effects[effect], data) <
0) {
return -1;
}
SDL_memcpy(&haptic->effects[effect].effect, data,
sizeof(SDL_HapticEffect));
return 0;
}
/*
* Runs the haptic effect on the device.
*/
int
SDL_HapticRunEffect(SDL_Haptic * haptic, int effect, Uint32 iterations)
{
if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
return -1;
}
/* Run the effect */
if (SDL_SYS_HapticRunEffect(haptic, &haptic->effects[effect], iterations)
< 0) {
return -1;
}
return 0;
}
/*
* Stops the haptic effect on the device.
*/
int
SDL_HapticStopEffect(SDL_Haptic * haptic, int effect)
{
if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
return -1;
}
/* Stop the effect */
if (SDL_SYS_HapticStopEffect(haptic, &haptic->effects[effect]) < 0) {
return -1;
}
return 0;
}
/*
* Gets rid of a haptic effect.
*/
void
SDL_HapticDestroyEffect(SDL_Haptic * haptic, int effect)
{
if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
return;
}
/* Not allocated */
if (haptic->effects[effect].hweffect == NULL) {
return;
}
SDL_SYS_HapticDestroyEffect(haptic, &haptic->effects[effect]);
}
/*
* Gets the status of a haptic effect.
*/
int
SDL_HapticGetEffectStatus(SDL_Haptic * haptic, int effect)
{
if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
return -1;
}
if ((haptic->supported & SDL_HAPTIC_STATUS) == 0) {
return SDL_SetError("Haptic: Device does not support status queries.");
}
return SDL_SYS_HapticGetEffectStatus(haptic, &haptic->effects[effect]);
}
/*
* Sets the global gain of the device.
*/
int
SDL_HapticSetGain(SDL_Haptic * haptic, int gain)
{
const char *env;
int real_gain, max_gain;
if (!ValidHaptic(haptic)) {
return -1;
}
if ((haptic->supported & SDL_HAPTIC_GAIN) == 0) {
return SDL_SetError("Haptic: Device does not support setting gain.");
}
if ((gain < 0) || (gain > 100)) {
return SDL_SetError("Haptic: Gain must be between 0 and 100.");
}
/* We use the envvar to get the maximum gain. */
env = SDL_getenv("SDL_HAPTIC_GAIN_MAX");
if (env != NULL) {
max_gain = SDL_atoi(env);
/* Check for sanity. */
if (max_gain < 0)
max_gain = 0;
else if (max_gain > 100)
max_gain = 100;
/* We'll scale it linearly with SDL_HAPTIC_GAIN_MAX */
real_gain = (gain * max_gain) / 100;
} else {
real_gain = gain;
}
if (SDL_SYS_HapticSetGain(haptic, real_gain) < 0) {
return -1;
}
return 0;
}
/*
* Makes the device autocenter, 0 disables.
*/
int
SDL_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter)
{
if (!ValidHaptic(haptic)) {
return -1;
}
if ((haptic->supported & SDL_HAPTIC_AUTOCENTER) == 0) {
return SDL_SetError("Haptic: Device does not support setting autocenter.");
}
if ((autocenter < 0) || (autocenter > 100)) {
return SDL_SetError("Haptic: Autocenter must be between 0 and 100.");
}
if (SDL_SYS_HapticSetAutocenter(haptic, autocenter) < 0) {
return -1;
}
return 0;
}
/*
* Pauses the haptic device.
*/
int
SDL_HapticPause(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return -1;
}
if ((haptic->supported & SDL_HAPTIC_PAUSE) == 0) {
return SDL_SetError("Haptic: Device does not support setting pausing.");
}
return SDL_SYS_HapticPause(haptic);
}
/*
* Unpauses the haptic device.
*/
int
SDL_HapticUnpause(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return -1;
}
if ((haptic->supported & SDL_HAPTIC_PAUSE) == 0) {
return 0; /* Not going to be paused, so we pretend it's unpaused. */
}
return SDL_SYS_HapticUnpause(haptic);
}
/*
* Stops all the currently playing effects.
*/
int
SDL_HapticStopAll(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return -1;
}
return SDL_SYS_HapticStopAll(haptic);
}
/*
* Checks to see if rumble is supported.
*/
int
SDL_HapticRumbleSupported(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return -1;
}
/* Most things can use SINE, but XInput only has LEFTRIGHT. */
return ((haptic->supported & (SDL_HAPTIC_SINE|SDL_HAPTIC_LEFTRIGHT)) != 0);
}
/*
* Initializes the haptic device for simple rumble playback.
*/
int
SDL_HapticRumbleInit(SDL_Haptic * haptic)
{
SDL_HapticEffect *efx = &haptic->rumble_effect;
if (!ValidHaptic(haptic)) {
return -1;
}
/* Already allocated. */
if (haptic->rumble_id >= 0) {
return 0;
}
SDL_zerop(efx);
if (haptic->supported & SDL_HAPTIC_SINE) {
efx->type = SDL_HAPTIC_SINE;
efx->periodic.period = 1000;
efx->periodic.magnitude = 0x4000;
efx->periodic.length = 5000;
efx->periodic.attack_length = 0;
efx->periodic.fade_length = 0;
} else if (haptic->supported & SDL_HAPTIC_LEFTRIGHT) { /* XInput? */
efx->type = SDL_HAPTIC_LEFTRIGHT;
efx->leftright.length = 5000;
efx->leftright.large_magnitude = 0x4000;
efx->leftright.small_magnitude = 0x4000;
} else {
return SDL_SetError("Device doesn't support rumble");
}
haptic->rumble_id = SDL_HapticNewEffect(haptic, &haptic->rumble_effect);
if (haptic->rumble_id >= 0) {
return 0;
}
return -1;
}
/*
* Runs simple rumble on a haptic device
*/
int
SDL_HapticRumblePlay(SDL_Haptic * haptic, float strength, Uint32 length)
{
SDL_HapticEffect *efx;
Sint16 magnitude;
if (!ValidHaptic(haptic)) {
return -1;
}
if (haptic->rumble_id < 0) {
return SDL_SetError("Haptic: Rumble effect not initialized on haptic device");
}
/* Clamp strength. */
if (strength > 1.0f) {
strength = 1.0f;
} else if (strength < 0.0f) {
strength = 0.0f;
}
magnitude = (Sint16)(32767.0f*strength);
efx = &haptic->rumble_effect;
if (efx->type == SDL_HAPTIC_SINE) {
efx->periodic.magnitude = magnitude;
efx->periodic.length = length;
} else if (efx->type == SDL_HAPTIC_LEFTRIGHT) {
efx->leftright.small_magnitude = efx->leftright.large_magnitude = magnitude;
efx->leftright.length = length;
} else {
SDL_assert(0 && "This should have been caught elsewhere");
}
if (SDL_HapticUpdateEffect(haptic, haptic->rumble_id, &haptic->rumble_effect) < 0) {
return -1;
}
return SDL_HapticRunEffect(haptic, haptic->rumble_id, 1);
}
/*
* Stops the simple rumble on a haptic device.
*/
int
SDL_HapticRumbleStop(SDL_Haptic * haptic)
{
if (!ValidHaptic(haptic)) {
return -1;
}
if (haptic->rumble_id < 0) {
return SDL_SetError("Haptic: Rumble effect not initialized on haptic device");
}
return SDL_HapticStopEffect(haptic, haptic->rumble_id);
}

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src/haptic/SDL_haptic_c.h Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
extern int SDL_HapticInit(void);
extern void SDL_HapticQuit(void);
/* vi: set ts=4 sw=4 expandtab: */

203
src/haptic/SDL_syshaptic.h Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#include "SDL_haptic.h"
/*
* Number of haptic devices on the system.
*/
extern Uint8 SDL_numhaptics;
struct haptic_effect
{
SDL_HapticEffect effect; /* The current event */
struct haptic_hweffect *hweffect; /* The hardware behind the event */
};
/*
* The real SDL_Haptic struct.
*/
struct _SDL_Haptic
{
Uint8 index; /* Stores index it is attached to */
struct haptic_effect *effects; /* Allocated effects */
int neffects; /* Maximum amount of effects */
int nplaying; /* Maximum amount of effects to play at the same time */
unsigned int supported; /* Supported effects */
int naxes; /* Number of axes on the device. */
struct haptic_hwdata *hwdata; /* Driver dependent */
int ref_count; /* Count for multiple opens */
int rumble_id; /* ID of rumble effect for simple rumble API. */
SDL_HapticEffect rumble_effect; /* Rumble effect. */
};
/*
* Scans the system for haptic devices.
*
* Returns number of devices on success, -1 on error.
*/
extern int SDL_SYS_HapticInit(void);
/*
* Gets the device dependent name of the haptic device
*/
extern const char *SDL_SYS_HapticName(int index);
/*
* Opens the haptic device for usage. The haptic device should have
* the index value set previously.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticOpen(SDL_Haptic * haptic);
/*
* Returns the index of the haptic core pointer or -1 if none is found.
*/
int SDL_SYS_HapticMouse(void);
/*
* Checks to see if the joystick has haptic capabilities.
*
* Returns >0 if haptic capabilities are detected, 0 if haptic
* capabilities aren't detected and -1 on error.
*/
extern int SDL_SYS_JoystickIsHaptic(SDL_Joystick * joystick);
/*
* Opens the haptic device for usage using the same device as
* the joystick.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticOpenFromJoystick(SDL_Haptic * haptic,
SDL_Joystick * joystick);
/*
* Checks to see if haptic device and joystick device are the same.
*
* Returns 1 if they are the same, 0 if they aren't.
*/
extern int SDL_SYS_JoystickSameHaptic(SDL_Haptic * haptic,
SDL_Joystick * joystick);
/*
* Closes a haptic device after usage.
*/
extern void SDL_SYS_HapticClose(SDL_Haptic * haptic);
/*
* Performs a cleanup on the haptic subsystem.
*/
extern void SDL_SYS_HapticQuit(void);
/*
* Creates a new haptic effect on the haptic device using base
* as a template for the effect.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticNewEffect(SDL_Haptic * haptic,
struct haptic_effect *effect,
SDL_HapticEffect * base);
/*
* Updates the haptic effect on the haptic device using data
* as a template.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticUpdateEffect(SDL_Haptic * haptic,
struct haptic_effect *effect,
SDL_HapticEffect * data);
/*
* Runs the effect on the haptic device.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticRunEffect(SDL_Haptic * haptic,
struct haptic_effect *effect,
Uint32 iterations);
/*
* Stops the effect on the haptic device.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticStopEffect(SDL_Haptic * haptic,
struct haptic_effect *effect);
/*
* Cleanups up the effect on the haptic device.
*/
extern void SDL_SYS_HapticDestroyEffect(SDL_Haptic * haptic,
struct haptic_effect *effect);
/*
* Queries the device for the status of effect.
*
* Returns 0 if device is stopped, >0 if device is playing and
* -1 on error.
*/
extern int SDL_SYS_HapticGetEffectStatus(SDL_Haptic * haptic,
struct haptic_effect *effect);
/*
* Sets the global gain of the haptic device.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticSetGain(SDL_Haptic * haptic, int gain);
/*
* Sets the autocenter feature of the haptic device.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter);
/*
* Pauses the haptic device.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticPause(SDL_Haptic * haptic);
/*
* Unpauses the haptic device.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticUnpause(SDL_Haptic * haptic);
/*
* Stops all the currently playing haptic effects on the device.
*
* Returns 0 on success, -1 on error.
*/
extern int SDL_SYS_HapticStopAll(SDL_Haptic * haptic);

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src/haptic/darwin/SDL_syshaptic.c Normal file
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src/haptic/dummy/SDL_syshaptic.c Normal file
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_config.h"
#if defined(SDL_HAPTIC_DUMMY) || defined(SDL_HAPTIC_DISABLED)
#include "SDL_haptic.h"
#include "../SDL_syshaptic.h"
static int
SDL_SYS_LogicError(void)
{
return SDL_SetError("Logic error: No haptic devices available.");
}
int
SDL_SYS_HapticInit(void)
{
return 0;
}
const char *
SDL_SYS_HapticName(int index)
{
SDL_SYS_LogicError();
return NULL;
}
int
SDL_SYS_HapticOpen(SDL_Haptic * haptic)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_HapticMouse(void)
{
return -1;
}
int
SDL_SYS_JoystickIsHaptic(SDL_Joystick * joystick)
{
return 0;
}
int
SDL_SYS_HapticOpenFromJoystick(SDL_Haptic * haptic, SDL_Joystick * joystick)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_JoystickSameHaptic(SDL_Haptic * haptic, SDL_Joystick * joystick)
{
return 0;
}
void
SDL_SYS_HapticClose(SDL_Haptic * haptic)
{
return;
}
void
SDL_SYS_HapticQuit(void)
{
return;
}
int
SDL_SYS_HapticNewEffect(SDL_Haptic * haptic,
struct haptic_effect *effect, SDL_HapticEffect * base)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_HapticUpdateEffect(SDL_Haptic * haptic,
struct haptic_effect *effect,
SDL_HapticEffect * data)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_HapticRunEffect(SDL_Haptic * haptic, struct haptic_effect *effect,
Uint32 iterations)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_HapticStopEffect(SDL_Haptic * haptic, struct haptic_effect *effect)
{
return SDL_SYS_LogicError();
}
void
SDL_SYS_HapticDestroyEffect(SDL_Haptic * haptic, struct haptic_effect *effect)
{
SDL_SYS_LogicError();
return;
}
int
SDL_SYS_HapticGetEffectStatus(SDL_Haptic * haptic,
struct haptic_effect *effect)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_HapticSetGain(SDL_Haptic * haptic, int gain)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_HapticPause(SDL_Haptic * haptic)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_HapticUnpause(SDL_Haptic * haptic)
{
return SDL_SYS_LogicError();
}
int
SDL_SYS_HapticStopAll(SDL_Haptic * haptic)
{
return SDL_SYS_LogicError();
}
#endif /* SDL_HAPTIC_DUMMY || SDL_HAPTIC_DISABLED */

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