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Update for SDL3 coding style (#6717)

Browse Source 
I updated .clang-format and ran clang-format 14 over the src and test directories to standardize the code base.

In general I let clang-format have it's way, and added markup to prevent formatting of code that would break or be completely unreadable if formatted.

The script I ran for the src directory is added as build-scripts/clang-format-src.sh

This fixes:
#6592
#6593
#6594
This commit is contained in:
Sam Lantinga
2022-11-30 12:51:59 -08:00
committed by GitHub
parent 14b902faca
commit 5750bcb174
781 changed files with 51659 additions and 55763 deletions
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354
src/audio/alsa/SDL_alsa_audio.c
View File

@@ -34,7 +34,7 @@
/* Allow access to a raw mixing buffer */
#include <sys/types.h>
#include <signal.h> /* For kill() */
#include <signal.h> /* For kill() */
#include <string.h>
#include "../SDL_audio_c.h"
@@ -43,64 +43,46 @@
#ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
#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 snd_pcm_sframes_t (*ALSA_snd_pcm_readi)
(snd_pcm_t *, 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_min)
(snd_pcm_t *, snd_pcm_hw_params_t *, unsigned int *, int *);
static int (*ALSA_snd_pcm_hw_params_set_periods_first)
(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_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 snd_pcm_sframes_t (*ALSA_snd_pcm_readi)(snd_pcm_t *, 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_min)(snd_pcm_t *, snd_pcm_hw_params_t *, unsigned int *, int *);
static int (*ALSA_snd_pcm_hw_params_set_periods_first)(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);
static int (*ALSA_snd_pcm_sw_params_set_avail_min)(snd_pcm_t *, snd_pcm_sw_params_t *, snd_pcm_uframes_t);
static int (*ALSA_snd_pcm_reset)(snd_pcm_t *);
static int (*ALSA_snd_device_name_hint) (int, const char *, void ***);
static char* (*ALSA_snd_device_name_get_hint) (const void *, const char *);
static int (*ALSA_snd_device_name_free_hint) (void **);
static int (*ALSA_snd_device_name_hint)(int, const char *, void ***);
static char *(*ALSA_snd_device_name_get_hint)(const void *, const char *);
static int (*ALSA_snd_device_name_free_hint)(void **);
static snd_pcm_sframes_t (*ALSA_snd_pcm_avail)(snd_pcm_t *);
#ifdef SND_CHMAP_API_VERSION
static snd_pcm_chmap_t* (*ALSA_snd_pcm_get_chmap) (snd_pcm_t *);
static int (*ALSA_snd_pcm_chmap_print) (const snd_pcm_chmap_t *map, size_t maxlen, char *buf);
static snd_pcm_chmap_t *(*ALSA_snd_pcm_get_chmap)(snd_pcm_t *);
static int (*ALSA_snd_pcm_chmap_print)(const snd_pcm_chmap_t *map, size_t maxlen, char *buf);
#endif
#ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
@@ -110,8 +92,7 @@ static int (*ALSA_snd_pcm_chmap_print) (const snd_pcm_chmap_t *map, size_t maxle
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)
static int load_alsa_sym(const char *fn, void **addr)
{
*addr = SDL_LoadFunction(alsa_handle, fn);
if (*addr == NULL) {
@@ -123,14 +104,14 @@ load_alsa_sym(const char *fn, void **addr)
}
/* 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
#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)
static int load_alsa_syms(void)
{
SDL_ALSA_SYM(snd_pcm_open);
SDL_ALSA_SYM(snd_pcm_close);
@@ -180,8 +161,7 @@ load_alsa_syms(void)
#ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
static void
UnloadALSALibrary(void)
static void UnloadALSALibrary(void)
{
if (alsa_handle != NULL) {
SDL_UnloadObject(alsa_handle);
@@ -189,8 +169,7 @@ UnloadALSALibrary(void)
}
}
static int
LoadALSALibrary(void)
static int LoadALSALibrary(void)
{
int retval = 0;
if (alsa_handle == NULL) {
@@ -210,13 +189,11 @@ LoadALSALibrary(void)
#else
static void
UnloadALSALibrary(void)
static void UnloadALSALibrary(void)
{
}
static int
LoadALSALibrary(void)
static int LoadALSALibrary(void)
{
load_alsa_syms();
return 0;
@@ -224,8 +201,7 @@ LoadALSALibrary(void)
#endif /* SDL_AUDIO_DRIVER_ALSA_DYNAMIC */
static const char *
get_audio_device(void *handle, const int channels)
static const char *get_audio_device(void *handle, const int channels)
{
const char *device;
@@ -234,7 +210,7 @@ get_audio_device(void *handle, const int channels)
}
/* !!! FIXME: we also check "SDL_AUDIO_DEVICE_NAME" at the higher level. */
device = SDL_getenv("AUDIODEV"); /* Is there a standard variable name? */
device = SDL_getenv("AUDIODEV"); /* Is there a standard variable name? */
if (device != NULL) {
return device;
}
@@ -248,49 +224,50 @@ get_audio_device(void *handle, const int channels)
return "default";
}
/* This function waits until it is possible to write a full sound buffer */
static void
ALSA_WaitDevice(_THIS)
static void ALSA_WaitDevice(_THIS)
{
#if SDL_ALSA_NON_BLOCKING
const snd_pcm_sframes_t needed = (snd_pcm_sframes_t) this->spec.samples;
const snd_pcm_sframes_t needed = (snd_pcm_sframes_t)this->spec.samples;
while (SDL_AtomicGet(&this->enabled)) {
const snd_pcm_sframes_t rc = ALSA_snd_pcm_avail(this->hidden->pcm_handle);
if ((rc < 0) && (rc != -EAGAIN)) {
/* Hmm, not much we can do - abort */
fprintf(stderr, "ALSA snd_pcm_avail failed (unrecoverable): %s\n",
ALSA_snd_strerror(rc));
ALSA_snd_strerror(rc));
SDL_OpenedAudioDeviceDisconnected(this);
return;
} else if (rc < needed) {
const Uint32 delay = ((needed - (SDL_max(rc, 0))) * 1000) / this->spec.freq;
SDL_Delay(SDL_max(delay, 10));
} else {
break; /* ready to go! */
break; /* ready to go! */
}
}
#endif
}
/* !!! FIXME: is there a channel swizzler in alsalib instead? */
/*
* https://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) \
static void swizzle_alsa_channels_6_##T(void *buffer, const Uint32 bufferlen) { \
T *ptr = (T *) buffer; \
Uint32 i; \
for (i = 0; i < bufferlen; 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; \
} \
}
#define SWIZ6(T) \
static void swizzle_alsa_channels_6_##T(void *buffer, const Uint32 bufferlen) \
{ \
T *ptr = (T *)buffer; \
Uint32 i; \
for (i = 0; i < bufferlen; 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; \
} \
}
/* !!! FIXME: is there a channel swizzler in alsalib instead? */
/* !!! FIXME: this screams for a SIMD shuffle operation. */
@@ -299,31 +276,32 @@ static void swizzle_alsa_channels_6_##T(void *buffer, const Uint32 bufferlen) {
* For Linux ALSA, this appears to be FL-FR-RL-RR-C-LFE-SL-SR
* and for Windows DirectX [and CoreAudio], this is FL-FR-C-LFE-SL-SR-RL-RR"
*/
#define SWIZ8(T) \
static void swizzle_alsa_channels_8_##T(void *buffer, const Uint32 bufferlen) { \
T *ptr = (T *) buffer; \
Uint32 i; \
for (i = 0; i < bufferlen; i++, ptr += 6) { \
const T center = ptr[2]; \
const T subwoofer = ptr[3]; \
const T side_left = ptr[4]; \
const T side_right = ptr[5]; \
const T rear_left = ptr[6]; \
const T rear_right = ptr[7]; \
ptr[2] = rear_left; \
ptr[3] = rear_right; \
ptr[4] = center; \
ptr[5] = subwoofer; \
ptr[6] = side_left; \
ptr[7] = side_right; \
} \
}
#define SWIZ8(T) \
static void swizzle_alsa_channels_8_##T(void *buffer, const Uint32 bufferlen) \
{ \
T *ptr = (T *)buffer; \
Uint32 i; \
for (i = 0; i < bufferlen; i++, ptr += 6) { \
const T center = ptr[2]; \
const T subwoofer = ptr[3]; \
const T side_left = ptr[4]; \
const T side_right = ptr[5]; \
const T rear_left = ptr[6]; \
const T rear_right = ptr[7]; \
ptr[2] = rear_left; \
ptr[3] = rear_right; \
ptr[4] = center; \
ptr[5] = subwoofer; \
ptr[6] = side_left; \
ptr[7] = side_right; \
} \
}
#define CHANNEL_SWIZZLE(x) \
x(Uint64) \
x(Uint32) \
x(Uint16) \
x(Uint8)
x(Uint64) \
x(Uint32) \
x(Uint16) \
x(Uint8)
CHANNEL_SWIZZLE(SWIZ6)
CHANNEL_SWIZZLE(SWIZ8)
@@ -332,53 +310,59 @@ CHANNEL_SWIZZLE(SWIZ8)
#undef SWIZ6
#undef SWIZ8
/*
* Called right before feeding this->hidden->mixbuf to the hardware. Swizzle
* channels from Windows/Mac order to the format alsalib will want.
*/
static void
swizzle_alsa_channels(_THIS, void *buffer, Uint32 bufferlen)
static void swizzle_alsa_channels(_THIS, void *buffer, Uint32 bufferlen)
{
switch (this->spec.channels) {
#define CHANSWIZ(chans) \
case chans: \
switch ((this->spec.format & (0xFF))) { \
case 8: swizzle_alsa_channels_##chans##_Uint8(buffer, bufferlen); break; \
case 16: swizzle_alsa_channels_##chans##_Uint16(buffer, bufferlen); break; \
case 32: swizzle_alsa_channels_##chans##_Uint32(buffer, bufferlen); break; \
case 64: swizzle_alsa_channels_##chans##_Uint64(buffer, bufferlen); break; \
default: SDL_assert(!"unhandled bitsize"); break; \
} \
return;
#define CHANSWIZ(chans) \
case chans: \
switch ((this->spec.format & (0xFF))) { \
case 8: \
swizzle_alsa_channels_##chans##_Uint8(buffer, bufferlen); \
break; \
case 16: \
swizzle_alsa_channels_##chans##_Uint16(buffer, bufferlen); \
break; \
case 32: \
swizzle_alsa_channels_##chans##_Uint32(buffer, bufferlen); \
break; \
case 64: \
swizzle_alsa_channels_##chans##_Uint64(buffer, bufferlen); \
break; \
default: \
SDL_assert(!"unhandled bitsize"); \
break; \
} \
return;
CHANSWIZ(6);
CHANSWIZ(8);
#undef CHANSWIZ
default: break;
#undef CHANSWIZ
default:
break;
}
}
#ifdef SND_CHMAP_API_VERSION
/* Some devices have the right channel map, no swizzling necessary */
static void
no_swizzle(_THIS, void *buffer, Uint32 bufferlen)
static void no_swizzle(_THIS, void *buffer, Uint32 bufferlen)
{
}
#endif /* SND_CHMAP_API_VERSION */
static void
ALSA_PlayDevice(_THIS)
static void ALSA_PlayDevice(_THIS)
{
const Uint8 *sample_buf = (const Uint8 *) this->hidden->mixbuf;
const Uint8 *sample_buf = (const Uint8 *)this->hidden->mixbuf;
const int frame_size = ((SDL_AUDIO_BITSIZE(this->spec.format)) / 8) *
this->spec.channels;
snd_pcm_uframes_t frames_left = ((snd_pcm_uframes_t) this->spec.samples);
this->spec.channels;
snd_pcm_uframes_t frames_left = ((snd_pcm_uframes_t)this->spec.samples);
this->hidden->swizzle_func(this, this->hidden->mixbuf, frames_left);
while ( frames_left > 0 && SDL_AtomicGet(&this->enabled) ) {
while (frames_left > 0 && SDL_AtomicGet(&this->enabled)) {
int status = ALSA_snd_pcm_writei(this->hidden->pcm_handle,
sample_buf, frames_left);
@@ -410,29 +394,27 @@ ALSA_PlayDevice(_THIS)
}
}
static Uint8 *
ALSA_GetDeviceBuf(_THIS)
static Uint8 *ALSA_GetDeviceBuf(_THIS)
{
return this->hidden->mixbuf;
}
static int
ALSA_CaptureFromDevice(_THIS, void *buffer, int buflen)
static int ALSA_CaptureFromDevice(_THIS, void *buffer, int buflen)
{
Uint8 *sample_buf = (Uint8 *) buffer;
Uint8 *sample_buf = (Uint8 *)buffer;
const int frame_size = ((SDL_AUDIO_BITSIZE(this->spec.format)) / 8) *
this->spec.channels;
this->spec.channels;
const int total_frames = buflen / frame_size;
snd_pcm_uframes_t frames_left = total_frames;
snd_pcm_uframes_t wait_time = frame_size / 2;
SDL_assert((buflen % frame_size) == 0);
while ( frames_left > 0 && SDL_AtomicGet(&this->enabled) ) {
while (frames_left > 0 && SDL_AtomicGet(&this->enabled)) {
int status;
status = ALSA_snd_pcm_readi(this->hidden->pcm_handle,
sample_buf, frames_left);
sample_buf, frames_left);
if (status == -EAGAIN) {
ALSA_snd_pcm_wait(this->hidden->pcm_handle, wait_time);
@@ -459,14 +441,12 @@ ALSA_CaptureFromDevice(_THIS, void *buffer, int buflen)
return (total_frames - frames_left) * frame_size;
}
static void
ALSA_FlushCapture(_THIS)
static void ALSA_FlushCapture(_THIS)
{
ALSA_snd_pcm_reset(this->hidden->pcm_handle);
}
static void
ALSA_CloseDevice(_THIS)
static void ALSA_CloseDevice(_THIS)
{
if (this->hidden->pcm_handle) {
/* Wait for the submitted audio to drain
@@ -481,8 +461,7 @@ ALSA_CloseDevice(_THIS)
SDL_free(this->hidden);
}
static int
ALSA_set_buffer_size(_THIS, snd_pcm_hw_params_t *params)
static int ALSA_set_buffer_size(_THIS, snd_pcm_hw_params_t *params)
{
int status;
snd_pcm_hw_params_t *hwparams;
@@ -496,49 +475,48 @@ ALSA_set_buffer_size(_THIS, snd_pcm_hw_params_t *params)
/* Attempt to match the period size to the requested buffer size */
persize = this->spec.samples;
status = ALSA_snd_pcm_hw_params_set_period_size_near(
this->hidden->pcm_handle, hwparams, &persize, NULL);
if ( status < 0 ) {
this->hidden->pcm_handle, hwparams, &persize, NULL);
if (status < 0) {
return -1;
}
/* Need to at least double buffer */
periods = 2;
status = ALSA_snd_pcm_hw_params_set_periods_min(
this->hidden->pcm_handle, hwparams, &periods, NULL);
if ( status < 0 ) {
this->hidden->pcm_handle, hwparams, &periods, NULL);
if (status < 0) {
return -1;
}
status = ALSA_snd_pcm_hw_params_set_periods_first(
this->hidden->pcm_handle, hwparams, &periods, NULL);
if ( status < 0 ) {
this->hidden->pcm_handle, hwparams, &periods, NULL);
if (status < 0) {
return -1;
}
/* "set" the hardware with the desired parameters */
status = ALSA_snd_pcm_hw_params(this->hidden->pcm_handle, hwparams);
if ( status < 0 ) {
if (status < 0) {
return -1;
}
this->spec.samples = persize;
/* This is useful for debugging */
if ( SDL_getenv("SDL_AUDIO_ALSA_DEBUG") ) {
if (SDL_getenv("SDL_AUDIO_ALSA_DEBUG")) {
snd_pcm_uframes_t bufsize;
ALSA_snd_pcm_hw_params_get_buffer_size(hwparams, &bufsize);
fprintf(stderr,
"ALSA: period size = %ld, periods = %u, buffer size = %lu\n",
persize, periods, bufsize);
"ALSA: period size = %ld, periods = %u, buffer size = %lu\n",
persize, periods, bufsize);
}
return 0;
}
static int
ALSA_OpenDevice(_THIS, const char *devname)
static int ALSA_OpenDevice(_THIS, const char *devname)
{
int status = 0;
SDL_bool iscapture = this->iscapture;
@@ -565,9 +543,9 @@ ALSA_OpenDevice(_THIS, const char *devname)
/* Open the audio device */
/* Name of device should depend on # channels in spec */
status = ALSA_snd_pcm_open(&pcm_handle,
get_audio_device(this->handle, this->spec.channels),
iscapture ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK,
SND_PCM_NONBLOCK);
get_audio_device(this->handle, this->spec.channels),
iscapture ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK,
SND_PCM_NONBLOCK);
if (status < 0) {
return SDL_SetError("ALSA: Couldn't open audio device: %s", ALSA_snd_strerror(status));
@@ -704,18 +682,18 @@ ALSA_OpenDevice(_THIS, const char *devname)
/* Allocate mixing buffer */
if (!iscapture) {
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_malloc(this->hidden->mixlen);
this->hidden->mixbuf = (Uint8 *)SDL_malloc(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->hidden->mixlen);
}
#if !SDL_ALSA_NON_BLOCKING
#if !SDL_ALSA_NON_BLOCKING
if (!iscapture) {
ALSA_snd_pcm_nonblock(pcm_handle, 0);
}
#endif
#endif
/* We're ready to rock and roll. :-) */
return 0;
@@ -728,10 +706,9 @@ typedef struct ALSA_Device
struct ALSA_Device *next;
} ALSA_Device;
static void
add_device(const int iscapture, const char *name, void *hint, ALSA_Device **pSeen)
static void add_device(const int iscapture, const char *name, void *hint, ALSA_Device **pSeen)
{
ALSA_Device *dev = SDL_malloc(sizeof (ALSA_Device));
ALSA_Device *dev = SDL_malloc(sizeof(ALSA_Device));
char *desc;
char *handle = NULL;
char *ptr;
@@ -751,7 +728,7 @@ add_device(const int iscapture, const char *name, void *hint, ALSA_Device **pSee
return;
}
} else {
desc = (char *) name;
desc = (char *)name;
}
SDL_assert(name != NULL);
@@ -788,11 +765,9 @@ add_device(const int iscapture, const char *name, void *hint, ALSA_Device **pSee
*pSeen = dev;
}
static ALSA_Device *hotplug_devices = NULL;
static void
ALSA_HotplugIteration(void)
static void ALSA_HotplugIteration(void)
{
void **hints = NULL;
ALSA_Device *dev;
@@ -807,7 +782,7 @@ ALSA_HotplugIteration(void)
int bestmatch = 0xFFFF;
size_t match_len = 0;
int defaultdev = -1;
static const char * const prefixes[] = {
static const char *const prefixes[] = {
"hw:", "sysdefault:", "default:", NULL
};
@@ -850,7 +825,7 @@ ALSA_HotplugIteration(void)
/* if we didn't find a device name prefix we like at all... */
if ((match == NULL) && (defaultdev != i)) {
continue; /* ...skip anything that isn't the default device. */
continue; /* ...skip anything that isn't the default device. */
}
name = ALSA_snd_device_name_get_hint(hints[i], "NAME");
@@ -876,7 +851,7 @@ ALSA_HotplugIteration(void)
prev = NULL;
for (dev = unseen; dev; dev = next) {
next = dev->next;
if ( (SDL_strcmp(dev->name, name) == 0) && (((isinput) && dev->iscapture) || ((isoutput) && !dev->iscapture)) ) {
if ((SDL_strcmp(dev->name, name) == 0) && (((isinput) && dev->iscapture) || ((isoutput) && !dev->iscapture))) {
if (prev) {
prev->next = next;
} else {
@@ -908,7 +883,7 @@ ALSA_HotplugIteration(void)
ALSA_snd_device_name_free_hint(hints);
hotplug_devices = seen; /* now we have a known-good list of attached devices. */
hotplug_devices = seen; /* now we have a known-good list of attached devices. */
/* report anything still in unseen as removed. */
for (dev = unseen; dev; dev = next) {
@@ -925,8 +900,7 @@ ALSA_HotplugIteration(void)
static SDL_atomic_t ALSA_hotplug_shutdown;
static SDL_Thread *ALSA_hotplug_thread;
static int SDLCALL
ALSA_HotplugThread(void *arg)
static int SDLCALL ALSA_HotplugThread(void *arg)
{
SDL_SetThreadPriority(SDL_THREAD_PRIORITY_LOW);
@@ -937,17 +911,16 @@ ALSA_HotplugThread(void *arg)
SDL_Delay(100);
}
ALSA_HotplugIteration(); /* run the check. */
ALSA_HotplugIteration(); /* run the check. */
}
return 0;
}
#endif
static void
ALSA_DetectDevices(void)
static void ALSA_DetectDevices(void)
{
ALSA_HotplugIteration(); /* run once now before a thread continues to check. */
ALSA_HotplugIteration(); /* run once now before a thread continues to check. */
#if SDL_ALSA_HOTPLUG_THREAD
SDL_AtomicSet(&ALSA_hotplug_shutdown, 0);
@@ -956,8 +929,7 @@ ALSA_DetectDevices(void)
#endif
}
static void
ALSA_Deinitialize(void)
static void ALSA_Deinitialize(void)
{
ALSA_Device *dev;
ALSA_Device *next;
@@ -982,8 +954,7 @@ ALSA_Deinitialize(void)
UnloadALSALibrary();
}
static SDL_bool
ALSA_Init(SDL_AudioDriverImpl * impl)
static SDL_bool ALSA_Init(SDL_AudioDriverImpl *impl)
{
if (LoadALSALibrary() < 0) {
return SDL_FALSE;
@@ -1003,10 +974,9 @@ ALSA_Init(SDL_AudioDriverImpl * impl)
impl->HasCaptureSupport = SDL_TRUE;
impl->SupportsNonPow2Samples = SDL_TRUE;
return SDL_TRUE; /* this audio target is available. */
return SDL_TRUE; /* this audio target is available. */
}
AudioBootStrap ALSA_bootstrap = {
"alsa", "ALSA PCM audio", ALSA_Init, SDL_FALSE
};