mirrors/SDL
1
0
Fork 0
mirror of https://github.com/libsdl-org/SDL.git synced 2026-04-23 15:56:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

audio: Readded (logical) device pausing.

Browse Source
This commit is contained in:
Ryan C. Gordon
2023-06-22 00:59:26 -04:00
parent fd4c9f4e11
commit 01f7b53865
6 changed files with 134 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
src/audio/SDL_audio.c
View File

@@ -603,7 +603,12 @@ SDL_bool SDL_OutputAudioThreadIterate(SDL_AudioDevice *device)
} else {
SDL_assert(buffer_size <= device->buffer_size); // you can ask for less, but not more.
SDL_memset(mix_buffer, device->silence_value, buffer_size); // start with silence.
for (SDL_LogicalAudioDevice *logdev = device->logical_devices; logdev != NULL; logdev = logdev->next) {
if (SDL_AtomicGet(&logdev->paused)) {
continue; // paused? Skip this logical device.
}
for (SDL_AudioStream *stream = logdev->bound_streams; stream != NULL; stream = stream->next_binding) {
/* this will hold a lock on `stream` while getting. We don't explicitly lock the streams
for iterating here because the binding linked list can only change while the device lock is held.
@@ -1165,6 +1170,41 @@ SDL_AudioDeviceID SDL_OpenAudioDevice(SDL_AudioDeviceID devid, const SDL_AudioSp
return retval;
}
static int SetLogicalAudioDevicePauseState(SDL_AudioDeviceID devid, int value)
{
SDL_LogicalAudioDevice *logdev = ObtainLogicalAudioDevice(devid);
if (!logdev) {
return -1; // ObtainLogicalAudioDevice will have set an error.
}
SDL_AtomicSet(&logdev->paused, value);
SDL_UnlockMutex(logdev->physical_device->lock);
return 0;
}
int SDL_PauseAudioDevice(SDL_AudioDeviceID devid)
{
return SetLogicalAudioDevicePauseState(devid, 1);
}
int SDLCALL SDL_UnpauseAudioDevice(SDL_AudioDeviceID devid)
{
return SetLogicalAudioDevicePauseState(devid, 0);
}
SDL_bool SDL_IsAudioDevicePaused(SDL_AudioDeviceID devid)
{
SDL_LogicalAudioDevice *logdev = ObtainLogicalAudioDevice(devid);
SDL_bool retval = SDL_FALSE;
if (logdev) {
if (SDL_AtomicGet(&logdev->paused)) {
retval = SDL_TRUE;
}
SDL_UnlockMutex(logdev->physical_device->lock);
}
return retval;
}
int SDL_BindAudioStreams(SDL_AudioDeviceID devid, SDL_AudioStream **streams, int num_streams)
{
const SDL_bool islogical = (devid & (1<<1)) ? SDL_FALSE : SDL_TRUE;

3
src/dynapi/SDL_dynapi.sym
View File

@@ -885,6 +885,9 @@ SDL3_0.0.0 {
SDL_ConvertAudioSamples;
SDL_GetSilenceValueForFormat;
SDL_LoadWAV;
SDL_PauseAudioDevice;
SDL_UnpauseAudioDevice;
SDL_IsAudioDevicePaused;
# extra symbols go here (don't modify this line)
local: *;
};

3
src/dynapi/SDL_dynapi_overrides.h
View File

@@ -911,3 +911,6 @@
#define SDL_ConvertAudioSamples SDL_ConvertAudioSamples_REAL
#define SDL_GetSilenceValueForFormat SDL_GetSilenceValueForFormat_REAL
#define SDL_LoadWAV SDL_LoadWAV_REAL
#define SDL_PauseAudioDevice SDL_PauseAudioDevice_REAL
#define SDL_UnpauseAudioDevice SDL_UnpauseAudioDevice_REAL
#define SDL_IsAudioDevicePaused SDL_IsAudioDevicePaused_REAL

3
src/dynapi/SDL_dynapi_procs.h
View File

@@ -955,3 +955,6 @@ SDL_DYNAPI_PROC(int,SDL_MixAudioFormat,(Uint8 *a, const Uint8 *b, SDL_AudioForma
SDL_DYNAPI_PROC(int,SDL_ConvertAudioSamples,(const SDL_AudioSpec *a, const Uint8 *b, int c, const SDL_AudioSpec *d, Uint8 **e, int *f),(a,b,c,d,e,f),return)
SDL_DYNAPI_PROC(int,SDL_GetSilenceValueForFormat,(SDL_AudioFormat a),(a),return)
SDL_DYNAPI_PROC(int,SDL_LoadWAV,(const char *a, SDL_AudioSpec *b, Uint8 **c, Uint32 *d),(a,b,c,d),return)
SDL_DYNAPI_PROC(int,SDL_PauseAudioDevice,(SDL_AudioDeviceID a),(a),return)
SDL_DYNAPI_PROC(int,SDL_UnpauseAudioDevice,(SDL_AudioDeviceID a),(a),return)
SDL_DYNAPI_PROC(SDL_bool,SDL_IsAudioDevicePaused,(SDL_AudioDeviceID a),(a),return)