SDL_audio.c
Go to the documentation of this file.
/*
Simple DirectMedia Layer
Copyright (C) 1997-2016 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_internal.h"
/* Allow access to a raw mixing buffer */
#include "SDL.h"
#include "SDL_audio.h"
#include "SDL_audio_c.h"
#include "SDL_audiomem.h"
#include "SDL_sysaudio.h"
#define _THIS SDL_AudioDevice *_this
static SDL_AudioDriver current_audio;
static SDL_AudioDevice *open_devices[16];
/* !!! FIXME: These are wordy and unlocalized... */
#define DEFAULT_OUTPUT_DEVNAME "System audio output device"
#define DEFAULT_INPUT_DEVNAME "System audio capture device"
/*
* Not all of these will be compiled and linked in, but it's convenient
* to have a complete list here and saves yet-another block of #ifdefs...
* Please see bootstrap[], below, for the actual #ifdef mess.
*/
extern AudioBootStrap BSD_AUDIO_bootstrap;
extern AudioBootStrap DSP_bootstrap;
extern AudioBootStrap ALSA_bootstrap;
extern AudioBootStrap PULSEAUDIO_bootstrap;
extern AudioBootStrap QSAAUDIO_bootstrap;
extern AudioBootStrap SUNAUDIO_bootstrap;
extern AudioBootStrap ARTS_bootstrap;
extern AudioBootStrap ESD_bootstrap;
extern AudioBootStrap NACLAUD_bootstrap;
extern AudioBootStrap NAS_bootstrap;
extern AudioBootStrap XAUDIO2_bootstrap;
extern AudioBootStrap DSOUND_bootstrap;
extern AudioBootStrap WINMM_bootstrap;
extern AudioBootStrap PAUDIO_bootstrap;
extern AudioBootStrap HAIKUAUDIO_bootstrap;
extern AudioBootStrap COREAUDIO_bootstrap;
extern AudioBootStrap SNDMGR_bootstrap;
extern AudioBootStrap DISKAUD_bootstrap;
extern AudioBootStrap DUMMYAUD_bootstrap;
extern AudioBootStrap DCAUD_bootstrap;
extern AudioBootStrap DART_bootstrap;
extern AudioBootStrap NDSAUD_bootstrap;
extern AudioBootStrap FUSIONSOUND_bootstrap;
extern AudioBootStrap ANDROIDAUD_bootstrap;
extern AudioBootStrap PSPAUD_bootstrap;
extern AudioBootStrap SNDIO_bootstrap;
extern AudioBootStrap EmscriptenAudio_bootstrap;
/* Available audio drivers */
static const AudioBootStrap *const bootstrap[] = {
#if SDL_AUDIO_DRIVER_PULSEAUDIO
&PULSEAUDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_ALSA
&ALSA_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_SNDIO
&SNDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_BSD
&BSD_AUDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_OSS
&DSP_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_QSA
&QSAAUDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_SUNAUDIO
&SUNAUDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_ARTS
&ARTS_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_ESD
&ESD_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_NACL
&NACLAUD_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_NAS
&NAS_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_XAUDIO2
&XAUDIO2_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_DSOUND
&DSOUND_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_WINMM
&WINMM_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_PAUDIO
&PAUDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_HAIKU
&HAIKUAUDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_COREAUDIO
&COREAUDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_DISK
&DISKAUD_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_DUMMY
&DUMMYAUD_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_FUSIONSOUND
&FUSIONSOUND_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_ANDROID
&ANDROIDAUD_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_PSP
&PSPAUD_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_EMSCRIPTEN
&EmscriptenAudio_bootstrap,
#endif
NULL
};
static SDL_AudioDevice *
get_audio_device(SDL_AudioDeviceID id)
{
id--;
if ((id >= SDL_arraysize(open_devices)) || (open_devices[id] == NULL)) {
SDL_SetError("Invalid audio device ID");
return NULL;
}
return open_devices[id];
}
/* stubs for audio drivers that don't need a specific entry point... */
static void
SDL_AudioDetectDevices_Default(void)
{
/* you have to write your own implementation if these assertions fail. */
SDL_assert(current_audio.impl.OnlyHasDefaultOutputDevice);
SDL_assert(current_audio.impl.OnlyHasDefaultInputDevice || !current_audio.impl.HasCaptureSupport);
SDL_AddAudioDevice(SDL_FALSE, DEFAULT_OUTPUT_DEVNAME, (void *) ((size_t) 0x1));
if (current_audio.impl.HasCaptureSupport) {
SDL_AddAudioDevice(SDL_TRUE, DEFAULT_INPUT_DEVNAME, (void *) ((size_t) 0x2));
}
}
static void
SDL_AudioThreadInit_Default(_THIS)
{ /* no-op. */
}
static void
SDL_AudioWaitDevice_Default(_THIS)
{ /* no-op. */
}
static void
SDL_AudioPlayDevice_Default(_THIS)
{ /* no-op. */
}
static int
SDL_AudioGetPendingBytes_Default(_THIS)
{
return 0;
}
static Uint8 *
SDL_AudioGetDeviceBuf_Default(_THIS)
{
return NULL;
}
static void
SDL_AudioWaitDone_Default(_THIS)
{ /* no-op. */
}
static void
SDL_AudioCloseDevice_Default(_THIS)
{ /* no-op. */
}
static void
SDL_AudioDeinitialize_Default(void)
{ /* no-op. */
}
static void
SDL_AudioFreeDeviceHandle_Default(void *handle)
{ /* no-op. */
}
static int
SDL_AudioOpenDevice_Default(_THIS, void *handle, const char *devname, int iscapture)
{
return SDL_Unsupported();
}
static SDL_INLINE SDL_bool
is_in_audio_device_thread(SDL_AudioDevice * device)
{
/* The device thread locks the same mutex, but not through the public API.
This check is in case the application, in the audio callback,
tries to lock the thread that we've already locked from the
device thread...just in case we only have non-recursive mutexes. */
if (device->thread && (SDL_ThreadID() == device->threadid)) {
return SDL_TRUE;
}
return SDL_FALSE;
}
static void
SDL_AudioLockDevice_Default(SDL_AudioDevice * device)
{
if (!is_in_audio_device_thread(device)) {
SDL_LockMutex(device->mixer_lock);
}
}
static void
SDL_AudioUnlockDevice_Default(SDL_AudioDevice * device)
{
if (!is_in_audio_device_thread(device)) {
SDL_UnlockMutex(device->mixer_lock);
}
}
static void
finalize_audio_entry_points(void)
{
/*
* Fill in stub functions for unused driver entry points. This lets us
* blindly call them without having to check for validity first.
*/
#define FILL_STUB(x) \
if (current_audio.impl.x == NULL) { \
current_audio.impl.x = SDL_Audio##x##_Default; \
}
FILL_STUB(DetectDevices);
FILL_STUB(OpenDevice);
FILL_STUB(ThreadInit);
FILL_STUB(WaitDevice);
FILL_STUB(PlayDevice);
FILL_STUB(GetPendingBytes);
FILL_STUB(GetDeviceBuf);
FILL_STUB(WaitDone);
FILL_STUB(CloseDevice);
FILL_STUB(LockDevice);
FILL_STUB(UnlockDevice);
FILL_STUB(FreeDeviceHandle);
FILL_STUB(Deinitialize);
#undef FILL_STUB
}
/* device hotplug support... */
static int
add_audio_device(const char *name, void *handle, SDL_AudioDeviceItem **devices, int *devCount)
{
int retval = -1;
const size_t size = sizeof (SDL_AudioDeviceItem) + SDL_strlen(name) + 1;
SDL_AudioDeviceItem *item = (SDL_AudioDeviceItem *) SDL_malloc(size);
if (item == NULL) {
return -1;
}
SDL_assert(handle != NULL); /* we reserve NULL, audio backends can't use it. */
item->handle = handle;
SDL_strlcpy(item->name, name, size - sizeof (SDL_AudioDeviceItem));
SDL_LockMutex(current_audio.detectionLock);
item->next = *devices;
*devices = item;
retval = (*devCount)++;
SDL_UnlockMutex(current_audio.detectionLock);
return retval;
}
static SDL_INLINE int
add_capture_device(const char *name, void *handle)
{
/* !!! FIXME: add this later. SDL_assert(current_audio.impl.HasCaptureSupport);*/
return add_audio_device(name, handle, &current_audio.inputDevices, &current_audio.inputDeviceCount);
}
static SDL_INLINE int
add_output_device(const char *name, void *handle)
{
return add_audio_device(name, handle, &current_audio.outputDevices, &current_audio.outputDeviceCount);
}
static void
free_device_list(SDL_AudioDeviceItem **devices, int *devCount)
{
SDL_AudioDeviceItem *item, *next;
for (item = *devices; item != NULL; item = next) {
next = item->next;
if (item->handle != NULL) {
current_audio.impl.FreeDeviceHandle(item->handle);
}
SDL_free(item);
}
*devices = NULL;
*devCount = 0;
}
/* The audio backends call this when a new device is plugged in. */
void
SDL_AddAudioDevice(const int iscapture, const char *name, void *handle)
{
const int device_index = iscapture ? add_capture_device(name, handle) : add_output_device(name, handle);
if (device_index != -1) {
/* Post the event, if desired */
if (SDL_GetEventState(SDL_AUDIODEVICEADDED) == SDL_ENABLE) {
SDL_Event event;
SDL_zero(event);
event.adevice.type = SDL_AUDIODEVICEADDED;
event.adevice.which = device_index;
event.adevice.iscapture = iscapture;
SDL_PushEvent(&event);
}
}
}
/* The audio backends call this when a currently-opened device is lost. */
void SDL_OpenedAudioDeviceDisconnected(SDL_AudioDevice *device)
{
SDL_assert(get_audio_device(device->id) == device);
if (!device->enabled) {
return;
}
/* Ends the audio callback and mark the device as STOPPED, but the
app still needs to close the device to free resources. */
current_audio.impl.LockDevice(device);
device->enabled = 0;
current_audio.impl.UnlockDevice(device);
/* Post the event, if desired */
if (SDL_GetEventState(SDL_AUDIODEVICEREMOVED) == SDL_ENABLE) {
SDL_Event event;
SDL_zero(event);
event.adevice.type = SDL_AUDIODEVICEREMOVED;
event.adevice.which = device->id;
event.adevice.iscapture = device->iscapture ? 1 : 0;
SDL_PushEvent(&event);
}
}
static void
mark_device_removed(void *handle, SDL_AudioDeviceItem *devices, SDL_bool *removedFlag)
{
SDL_AudioDeviceItem *item;
SDL_assert(handle != NULL);
for (item = devices; item != NULL; item = item->next) {
if (item->handle == handle) {
item->handle = NULL;
*removedFlag = SDL_TRUE;
return;
}
}
}
/* The audio backends call this when a device is removed from the system. */
void
SDL_RemoveAudioDevice(const int iscapture, void *handle)
{
SDL_LockMutex(current_audio.detectionLock);
if (iscapture) {
mark_device_removed(handle, current_audio.inputDevices, &current_audio.captureDevicesRemoved);
} else {
mark_device_removed(handle, current_audio.outputDevices, &current_audio.outputDevicesRemoved);
}
SDL_UnlockMutex(current_audio.detectionLock);
current_audio.impl.FreeDeviceHandle(handle);
}
/* buffer queueing support... */
/* this expects that you managed thread safety elsewhere. */
static void
free_audio_queue(SDL_AudioBufferQueue *buffer)
{
while (buffer) {
SDL_AudioBufferQueue *next = buffer->next;
SDL_free(buffer);
buffer = next;
}
}
static void SDLCALL
SDL_BufferQueueDrainCallback(void *userdata, Uint8 *stream, int _len)
{
/* this function always holds the mixer lock before being called. */
Uint32 len = (Uint32) _len;
SDL_AudioDevice *device = (SDL_AudioDevice *) userdata;
SDL_AudioBufferQueue *buffer;
SDL_assert(device != NULL); /* this shouldn't ever happen, right?! */
SDL_assert(_len >= 0); /* this shouldn't ever happen, right?! */
while ((len > 0) && ((buffer = device->buffer_queue_head) != NULL)) {
const Uint32 avail = buffer->datalen - buffer->startpos;
const Uint32 cpy = SDL_min(len, avail);
SDL_assert(device->queued_bytes >= avail);
SDL_memcpy(stream, buffer->data + buffer->startpos, cpy);
buffer->startpos += cpy;
stream += cpy;
device->queued_bytes -= cpy;
len -= cpy;
if (buffer->startpos == buffer->datalen) { /* packet is done, put it in the pool. */
device->buffer_queue_head = buffer->next;
SDL_assert((buffer->next != NULL) || (buffer == device->buffer_queue_tail));
buffer->next = device->buffer_queue_pool;
device->buffer_queue_pool = buffer;
}
}
SDL_assert((device->buffer_queue_head != NULL) == (device->queued_bytes != 0));
if (len > 0) { /* fill any remaining space in the stream with silence. */
SDL_assert(device->buffer_queue_head == NULL);
SDL_memset(stream, device->spec.silence, len);
}
if (device->buffer_queue_head == NULL) {
device->buffer_queue_tail = NULL; /* in case we drained the queue entirely. */
}
}
int
SDL_QueueAudio(SDL_AudioDeviceID devid, const void *_data, Uint32 len)
{
SDL_AudioDevice *device = get_audio_device(devid);
const Uint8 *data = (const Uint8 *) _data;
SDL_AudioBufferQueue *orighead;
SDL_AudioBufferQueue *origtail;
Uint32 origlen;
Uint32 datalen;
if (!device) {
return -1; /* get_audio_device() will have set the error state */
}
if (device->spec.callback != SDL_BufferQueueDrainCallback) {
return SDL_SetError("Audio device has a callback, queueing not allowed");
}
current_audio.impl.LockDevice(device);
orighead = device->buffer_queue_head;
origtail = device->buffer_queue_tail;
origlen = origtail ? origtail->datalen : 0;
while (len > 0) {
SDL_AudioBufferQueue *packet = device->buffer_queue_tail;
SDL_assert(!packet || (packet->datalen <= SDL_AUDIOBUFFERQUEUE_PACKETLEN));
if (!packet || (packet->datalen >= SDL_AUDIOBUFFERQUEUE_PACKETLEN)) {
/* tail packet missing or completely full; we need a new packet. */
packet = device->buffer_queue_pool;
if (packet != NULL) {
/* we have one available in the pool. */
device->buffer_queue_pool = packet->next;
} else {
/* Have to allocate a new one! */
packet = (SDL_AudioBufferQueue *) SDL_malloc(sizeof (SDL_AudioBufferQueue));
if (packet == NULL) {
/* uhoh, reset so we've queued nothing new, free what we can. */
if (!origtail) {
packet = device->buffer_queue_head; /* whole queue. */
} else {
packet = origtail->next; /* what we added to existing queue. */
origtail->next = NULL;
origtail->datalen = origlen;
}
device->buffer_queue_head = orighead;
device->buffer_queue_tail = origtail;
device->buffer_queue_pool = NULL;
current_audio.impl.UnlockDevice(device);
free_audio_queue(packet); /* give back what we can. */
return SDL_OutOfMemory();
}
}
packet->datalen = 0;
packet->startpos = 0;
packet->next = NULL;
SDL_assert((device->buffer_queue_head != NULL) == (device->queued_bytes != 0));
if (device->buffer_queue_tail == NULL) {
device->buffer_queue_head = packet;
} else {
device->buffer_queue_tail->next = packet;
}
device->buffer_queue_tail = packet;
}
datalen = SDL_min(len, SDL_AUDIOBUFFERQUEUE_PACKETLEN - packet->datalen);
SDL_memcpy(packet->data + packet->datalen, data, datalen);
data += datalen;
len -= datalen;
packet->datalen += datalen;
device->queued_bytes += datalen;
}
current_audio.impl.UnlockDevice(device);
return 0;
}
Uint32
SDL_GetQueuedAudioSize(SDL_AudioDeviceID devid)
{
Uint32 retval = 0;
SDL_AudioDevice *device = get_audio_device(devid);
/* Nothing to do unless we're set up for queueing. */
if (device && (device->spec.callback == SDL_BufferQueueDrainCallback)) {
current_audio.impl.LockDevice(device);
retval = device->queued_bytes + current_audio.impl.GetPendingBytes(device);
current_audio.impl.UnlockDevice(device);
}
return retval;
}
void
SDL_ClearQueuedAudio(SDL_AudioDeviceID devid)
{
SDL_AudioDevice *device = get_audio_device(devid);
SDL_AudioBufferQueue *buffer = NULL;
if (!device) {
return; /* nothing to do. */
}
/* Blank out the device and release the mutex. Free it afterwards. */
current_audio.impl.LockDevice(device);
buffer = device->buffer_queue_head;
device->buffer_queue_tail = NULL;
device->buffer_queue_head = NULL;
device->queued_bytes = 0;
current_audio.impl.UnlockDevice(device);
free_audio_queue(buffer);
}
/* The general mixing thread function */
int SDLCALL
SDL_RunAudio(void *devicep)
{
SDL_AudioDevice *device = (SDL_AudioDevice *) devicep;
const int silence = (int) device->spec.silence;
const Uint32 delay = ((device->spec.samples * 1000) / device->spec.freq);
const int stream_len = (device->convert.needed) ? device->convert.len : device->spec.size;
Uint8 *stream;
void *udata = device->spec.userdata;
void (SDLCALL *fill) (void *, Uint8 *, int) = device->spec.callback;
/* The audio mixing is always a high priority thread */
SDL_SetThreadPriority(SDL_THREAD_PRIORITY_HIGH);
/* Perform any thread setup */
device->threadid = SDL_ThreadID();
current_audio.impl.ThreadInit(device);
/* Loop, filling the audio buffers */
while (!device->shutdown) {
/* Fill the current buffer with sound */
if (device->convert.needed) {
stream = device->convert.buf;
} else if (device->enabled) {
stream = current_audio.impl.GetDeviceBuf(device);
} else {
/* if the device isn't enabled, we still write to the
fake_stream, so the app's callback will fire with
a regular frequency, in case they depend on that
for timing or progress. They can use hotplug
now to know if the device failed. */
stream = NULL;
}
if (stream == NULL) {
stream = device->fake_stream;
}
/* !!! FIXME: this should be LockDevice. */
SDL_LockMutex(device->mixer_lock);
if (device->paused) {
SDL_memset(stream, silence, stream_len);
} else {
(*fill) (udata, stream, stream_len);
}
SDL_UnlockMutex(device->mixer_lock);
/* Convert the audio if necessary */
if (device->enabled && device->convert.needed) {
SDL_ConvertAudio(&device->convert);
stream = current_audio.impl.GetDeviceBuf(device);
if (stream == NULL) {
stream = device->fake_stream;
} else {
SDL_memcpy(stream, device->convert.buf,
device->convert.len_cvt);
}
}
/* Ready current buffer for play and change current buffer */
if (stream == device->fake_stream) {
SDL_Delay(delay);
} else {
current_audio.impl.PlayDevice(device);
current_audio.impl.WaitDevice(device);
}
}
/* Wait for the audio to drain. */
current_audio.impl.WaitDone(device);
return 0;
}
static SDL_AudioFormat
SDL_ParseAudioFormat(const char *string)
{
#define CHECK_FMT_STRING(x) if (SDL_strcmp(string, #x) == 0) return AUDIO_##x
CHECK_FMT_STRING(U8);
CHECK_FMT_STRING(S8);
CHECK_FMT_STRING(U16LSB);
CHECK_FMT_STRING(S16LSB);
CHECK_FMT_STRING(U16MSB);
CHECK_FMT_STRING(S16MSB);
CHECK_FMT_STRING(U16SYS);
CHECK_FMT_STRING(S16SYS);
CHECK_FMT_STRING(U16);
CHECK_FMT_STRING(S16);
CHECK_FMT_STRING(S32LSB);
CHECK_FMT_STRING(S32MSB);
CHECK_FMT_STRING(S32SYS);
CHECK_FMT_STRING(S32);
CHECK_FMT_STRING(F32LSB);
CHECK_FMT_STRING(F32MSB);
CHECK_FMT_STRING(F32SYS);
CHECK_FMT_STRING(F32);
#undef CHECK_FMT_STRING
return 0;
}
int
SDL_GetNumAudioDrivers(void)
{
return SDL_arraysize(bootstrap) - 1;
}
const char *
SDL_GetAudioDriver(int index)
{
if (index >= 0 && index < SDL_GetNumAudioDrivers()) {
return bootstrap[index]->name;
}
return NULL;
}
int
SDL_AudioInit(const char *driver_name)
{
int i = 0;
int initialized = 0;
int tried_to_init = 0;
if (SDL_WasInit(SDL_INIT_AUDIO)) {
SDL_AudioQuit(); /* shutdown driver if already running. */
}
SDL_zero(current_audio);
SDL_zero(open_devices);
/* Select the proper audio driver */
if (driver_name == NULL) {
driver_name = SDL_getenv("SDL_AUDIODRIVER");
}
for (i = 0; (!initialized) && (bootstrap[i]); ++i) {
/* make sure we should even try this driver before doing so... */
const AudioBootStrap *backend = bootstrap[i];
if ((driver_name && (SDL_strncasecmp(backend->name, driver_name, SDL_strlen(driver_name)) != 0)) ||
(!driver_name && backend->demand_only)) {
continue;
}
tried_to_init = 1;
SDL_zero(current_audio);
current_audio.name = backend->name;
current_audio.desc = backend->desc;
initialized = backend->init(&current_audio.impl);
}
if (!initialized) {
/* specific drivers will set the error message if they fail... */
if (!tried_to_init) {
if (driver_name) {
SDL_SetError("Audio target '%s' not available", driver_name);
} else {
SDL_SetError("No available audio device");
}
}
SDL_zero(current_audio);
return -1; /* No driver was available, so fail. */
}
current_audio.detectionLock = SDL_CreateMutex();
finalize_audio_entry_points();
/* Make sure we have a list of devices available at startup. */
current_audio.impl.DetectDevices();
return 0;
}
/*
* Get the current audio driver name
*/
const char *
SDL_GetCurrentAudioDriver()
{
return current_audio.name;
}
/* Clean out devices that we've removed but had to keep around for stability. */
static void
clean_out_device_list(SDL_AudioDeviceItem **devices, int *devCount, SDL_bool *removedFlag)
{
SDL_AudioDeviceItem *item = *devices;
SDL_AudioDeviceItem *prev = NULL;
int total = 0;
while (item) {
SDL_AudioDeviceItem *next = item->next;
if (item->handle != NULL) {
total++;
prev = item;
} else {
if (prev) {
prev->next = next;
} else {
*devices = next;
}
SDL_free(item);
}
item = next;
}
*devCount = total;
*removedFlag = SDL_FALSE;
}
int
SDL_GetNumAudioDevices(int iscapture)
{
int retval = 0;
if (!SDL_WasInit(SDL_INIT_AUDIO)) {
return -1;
}
SDL_LockMutex(current_audio.detectionLock);
if (iscapture && current_audio.captureDevicesRemoved) {
clean_out_device_list(&current_audio.inputDevices, &current_audio.inputDeviceCount, &current_audio.captureDevicesRemoved);
}
if (!iscapture && current_audio.outputDevicesRemoved) {
clean_out_device_list(&current_audio.outputDevices, &current_audio.outputDeviceCount, &current_audio.outputDevicesRemoved);
current_audio.outputDevicesRemoved = SDL_FALSE;
}
retval = iscapture ? current_audio.inputDeviceCount : current_audio.outputDeviceCount;
SDL_UnlockMutex(current_audio.detectionLock);
return retval;
}
const char *
SDL_GetAudioDeviceName(int index, int iscapture)
{
const char *retval = NULL;
if (!SDL_WasInit(SDL_INIT_AUDIO)) {
SDL_SetError("Audio subsystem is not initialized");
return NULL;
}
if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
SDL_SetError("No capture support");
return NULL;
}
if (index >= 0) {
SDL_AudioDeviceItem *item;
int i;
SDL_LockMutex(current_audio.detectionLock);
item = iscapture ? current_audio.inputDevices : current_audio.outputDevices;
i = iscapture ? current_audio.inputDeviceCount : current_audio.outputDeviceCount;
if (index < i) {
for (i--; i > index; i--, item = item->next) {
SDL_assert(item != NULL);
}
SDL_assert(item != NULL);
retval = item->name;
}
SDL_UnlockMutex(current_audio.detectionLock);
}
if (retval == NULL) {
SDL_SetError("No such device");
}
return retval;
}
static void
close_audio_device(SDL_AudioDevice * device)
{
device->enabled = 0;
device->shutdown = 1;
if (device->thread != NULL) {
SDL_WaitThread(device->thread, NULL);
}
if (device->mixer_lock != NULL) {
SDL_DestroyMutex(device->mixer_lock);
}
SDL_FreeAudioMem(device->fake_stream);
if (device->convert.needed) {
SDL_FreeAudioMem(device->convert.buf);
}
if (device->opened) {
current_audio.impl.CloseDevice(device);
device->opened = 0;
}
free_audio_queue(device->buffer_queue_head);
free_audio_queue(device->buffer_queue_pool);
SDL_FreeAudioMem(device);
}
/*
* Sanity check desired AudioSpec for SDL_OpenAudio() in (orig).
* Fills in a sanitized copy in (prepared).
* Returns non-zero if okay, zero on fatal parameters in (orig).
*/
static int
prepare_audiospec(const SDL_AudioSpec * orig, SDL_AudioSpec * prepared)
{
SDL_memcpy(prepared, orig, sizeof(SDL_AudioSpec));
if (orig->freq == 0) {
const char *env = SDL_getenv("SDL_AUDIO_FREQUENCY");
if ((!env) || ((prepared->freq = SDL_atoi(env)) == 0)) {
prepared->freq = 22050; /* a reasonable default */
}
}
if (orig->format == 0) {
const char *env = SDL_getenv("SDL_AUDIO_FORMAT");
if ((!env) || ((prepared->format = SDL_ParseAudioFormat(env)) == 0)) {
prepared->format = AUDIO_S16; /* a reasonable default */
}
}
switch (orig->channels) {
case 0:{
const char *env = SDL_getenv("SDL_AUDIO_CHANNELS");
if ((!env) || ((prepared->channels = (Uint8) SDL_atoi(env)) == 0)) {
prepared->channels = 2; /* a reasonable default */
}
break;
}
case 1: /* Mono */
case 2: /* Stereo */
case 4: /* surround */
case 6: /* surround with center and lfe */
break;
default:
SDL_SetError("Unsupported number of audio channels.");
return 0;
}
if (orig->samples == 0) {
const char *env = SDL_getenv("SDL_AUDIO_SAMPLES");
if ((!env) || ((prepared->samples = (Uint16) SDL_atoi(env)) == 0)) {
/* Pick a default of ~46 ms at desired frequency */
/* !!! FIXME: remove this when the non-Po2 resampling is in. */
const int samples = (prepared->freq / 1000) * 46;
int power2 = 1;
while (power2 < samples) {
power2 *= 2;
}
prepared->samples = power2;
}
}
/* Calculate the silence and size of the audio specification */
SDL_CalculateAudioSpec(prepared);
return 1;
}
static SDL_AudioDeviceID
open_audio_device(const char *devname, int iscapture,
const SDL_AudioSpec * desired, SDL_AudioSpec * obtained,
int allowed_changes, int min_id)
{
SDL_AudioDeviceID id = 0;
SDL_AudioSpec _obtained;
SDL_AudioDevice *device;
SDL_bool build_cvt;
void *handle = NULL;
Uint32 stream_len;
int i = 0;
if (!SDL_WasInit(SDL_INIT_AUDIO)) {
SDL_SetError("Audio subsystem is not initialized");
return 0;
}
if ((iscapture) && (!current_audio.impl.HasCaptureSupport)) {
SDL_SetError("No capture support");
return 0;
}
/* Find an available device ID... */
for (id = min_id - 1; id < SDL_arraysize(open_devices); id++) {
if (open_devices[id] == NULL) {
break;
}
}
if (id == SDL_arraysize(open_devices)) {
SDL_SetError("Too many open audio devices");
return 0;
}
if (!obtained) {
obtained = &_obtained;
}
if (!prepare_audiospec(desired, obtained)) {
return 0;
}
/* If app doesn't care about a specific device, let the user override. */
if (devname == NULL) {
devname = SDL_getenv("SDL_AUDIO_DEVICE_NAME");
}
/*
* Catch device names at the high level for the simple case...
* This lets us have a basic "device enumeration" for systems that
* don't have multiple devices, but makes sure the device name is
* always NULL when it hits the low level.
*
* Also make sure that the simple case prevents multiple simultaneous
* opens of the default system device.
*/
if ((iscapture) && (current_audio.impl.OnlyHasDefaultInputDevice)) {
if ((devname) && (SDL_strcmp(devname, DEFAULT_INPUT_DEVNAME) != 0)) {
SDL_SetError("No such device");
return 0;
}
devname = NULL;
for (i = 0; i < SDL_arraysize(open_devices); i++) {
if ((open_devices[i]) && (open_devices[i]->iscapture)) {
SDL_SetError("Audio device already open");
return 0;
}
}
} else if ((!iscapture) && (current_audio.impl.OnlyHasDefaultOutputDevice)) {
if ((devname) && (SDL_strcmp(devname, DEFAULT_OUTPUT_DEVNAME) != 0)) {
SDL_SetError("No such device");
return 0;
}
devname = NULL;
for (i = 0; i < SDL_arraysize(open_devices); i++) {
if ((open_devices[i]) && (!open_devices[i]->iscapture)) {
SDL_SetError("Audio device already open");
return 0;
}
}
} else if (devname != NULL) {
/* if the app specifies an exact string, we can pass the backend
an actual device handle thingey, which saves them the effort of
figuring out what device this was (such as, reenumerating
everything again to find the matching human-readable name).
It might still need to open a device based on the string for,
say, a network audio server, but this optimizes some cases. */
SDL_AudioDeviceItem *item;
SDL_LockMutex(current_audio.detectionLock);
for (item = iscapture ? current_audio.inputDevices : current_audio.outputDevices; item; item = item->next) {
if ((item->handle != NULL) && (SDL_strcmp(item->name, devname) == 0)) {
handle = item->handle;
break;
}
}
SDL_UnlockMutex(current_audio.detectionLock);
}
if (!current_audio.impl.AllowsArbitraryDeviceNames) {
/* has to be in our device list, or the default device. */
if ((handle == NULL) && (devname != NULL)) {
SDL_SetError("No such device.");
return 0;
}
}
device = (SDL_AudioDevice *) SDL_AllocAudioMem(sizeof(SDL_AudioDevice));
if (device == NULL) {
SDL_OutOfMemory();
return 0;
}
SDL_zerop(device);
device->id = id + 1;
device->spec = *obtained;
device->enabled = 1;
device->paused = 1;
device->iscapture = iscapture;
/* Create a mutex for locking the sound buffers */
if (!current_audio.impl.SkipMixerLock) {
device->mixer_lock = SDL_CreateMutex();
if (device->mixer_lock == NULL) {
close_audio_device(device);
SDL_SetError("Couldn't create mixer lock");
return 0;
}
}
if (current_audio.impl.OpenDevice(device, handle, devname, iscapture) < 0) {
close_audio_device(device);
return 0;
}
device->opened = 1;
/* See if we need to do any conversion */
build_cvt = SDL_FALSE;
if (obtained->freq != device->spec.freq) {
if (allowed_changes & SDL_AUDIO_ALLOW_FREQUENCY_CHANGE) {
obtained->freq = device->spec.freq;
} else {
build_cvt = SDL_TRUE;
}
}
if (obtained->format != device->spec.format) {
if (allowed_changes & SDL_AUDIO_ALLOW_FORMAT_CHANGE) {
obtained->format = device->spec.format;
} else {
build_cvt = SDL_TRUE;
}
}
if (obtained->channels != device->spec.channels) {
if (allowed_changes & SDL_AUDIO_ALLOW_CHANNELS_CHANGE) {
obtained->channels = device->spec.channels;
} else {
build_cvt = SDL_TRUE;
}
}
/* If the audio driver changes the buffer size, accept it.
This needs to be done after the format is modified above,
otherwise it might not have the correct buffer size.
*/
if (device->spec.samples != obtained->samples) {
obtained->samples = device->spec.samples;
SDL_CalculateAudioSpec(obtained);
}
if (build_cvt) {
/* Build an audio conversion block */
if (SDL_BuildAudioCVT(&device->convert,
obtained->format, obtained->channels,
obtained->freq,
device->spec.format, device->spec.channels,
device->spec.freq) < 0) {
close_audio_device(device);
return 0;
}
if (device->convert.needed) {
device->convert.len = (int) (((double) device->spec.size) /
device->convert.len_ratio);
device->convert.buf =
(Uint8 *) SDL_AllocAudioMem(device->convert.len *
device->convert.len_mult);
if (device->convert.buf == NULL) {
close_audio_device(device);
SDL_OutOfMemory();
return 0;
}
}
}
/* Allocate a fake audio memory buffer */
stream_len = (device->convert.needed) ? device->convert.len_cvt : 0;
if (device->spec.size > stream_len) {
stream_len = device->spec.size;
}
SDL_assert(stream_len > 0);
device->fake_stream = (Uint8 *)SDL_AllocAudioMem(stream_len);
if (device->fake_stream == NULL) {
close_audio_device(device);
SDL_OutOfMemory();
return 0;
}
if (device->spec.callback == NULL) { /* use buffer queueing? */
/* pool a few packets to start. Enough for two callbacks. */
const int packetlen = SDL_AUDIOBUFFERQUEUE_PACKETLEN;
const int wantbytes = ((device->convert.needed) ? device->convert.len : device->spec.size) * 2;
const int wantpackets = (wantbytes / packetlen) + ((wantbytes % packetlen) ? packetlen : 0);
for (i = 0; i < wantpackets; i++) {
SDL_AudioBufferQueue *packet = (SDL_AudioBufferQueue *) SDL_malloc(sizeof (SDL_AudioBufferQueue));
if (packet) { /* don't care if this fails, we'll deal later. */
packet->datalen = 0;
packet->startpos = 0;
packet->next = device->buffer_queue_pool;
device->buffer_queue_pool = packet;
}
}
device->spec.callback = SDL_BufferQueueDrainCallback;
device->spec.userdata = device;
}
/* add it to our list of open devices. */
open_devices[id] = device;
/* Start the audio thread if necessary */
if (!current_audio.impl.ProvidesOwnCallbackThread) {
/* Start the audio thread */
char name[64];
SDL_snprintf(name, sizeof (name), "SDLAudioDev%d", (int) device->id);
/* !!! FIXME: this is nasty. */
#if defined(__WIN32__) && !defined(HAVE_LIBC)
#undef SDL_CreateThread
#if SDL_DYNAMIC_API
device->thread = SDL_CreateThread_REAL(SDL_RunAudio, name, device, NULL, NULL);
#else
device->thread = SDL_CreateThread(SDL_RunAudio, name, device, NULL, NULL);
#endif
#else
device->thread = SDL_CreateThread(SDL_RunAudio, name, device);
#endif
if (device->thread == NULL) {
SDL_CloseAudioDevice(device->id);
SDL_SetError("Couldn't create audio thread");
return 0;
}
}
return device->id;
}
int
SDL_OpenAudio(SDL_AudioSpec * desired, SDL_AudioSpec * obtained)
{
SDL_AudioDeviceID id = 0;
/* Start up the audio driver, if necessary. This is legacy behaviour! */
if (!SDL_WasInit(SDL_INIT_AUDIO)) {
if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
return -1;
}
}
/* SDL_OpenAudio() is legacy and can only act on Device ID #1. */
if (open_devices[0] != NULL) {
SDL_SetError("Audio device is already opened");
return -1;
}
if (obtained) {
id = open_audio_device(NULL, 0, desired, obtained,
SDL_AUDIO_ALLOW_ANY_CHANGE, 1);
} else {
id = open_audio_device(NULL, 0, desired, NULL, 0, 1);
}
SDL_assert((id == 0) || (id == 1));
return (id == 0) ? -1 : 0;
}
SDL_AudioDeviceID
SDL_OpenAudioDevice(const char *device, int iscapture,
const SDL_AudioSpec * desired, SDL_AudioSpec * obtained,
int allowed_changes)
{
return open_audio_device(device, iscapture, desired, obtained,
allowed_changes, 2);
}
SDL_AudioStatus
SDL_GetAudioDeviceStatus(SDL_AudioDeviceID devid)
{
SDL_AudioDevice *device = get_audio_device(devid);
SDL_AudioStatus status = SDL_AUDIO_STOPPED;
if (device && device->enabled) {
if (device->paused) {
status = SDL_AUDIO_PAUSED;
} else {
status = SDL_AUDIO_PLAYING;
}
}
return status;
}
SDL_AudioStatus
SDL_GetAudioStatus(void)
{
return SDL_GetAudioDeviceStatus(1);
}
void
SDL_PauseAudioDevice(SDL_AudioDeviceID devid, int pause_on)
{
SDL_AudioDevice *device = get_audio_device(devid);
if (device) {
current_audio.impl.LockDevice(device);
device->paused = pause_on;
current_audio.impl.UnlockDevice(device);
}
}
void
SDL_PauseAudio(int pause_on)
{
SDL_PauseAudioDevice(1, pause_on);
}
void
SDL_LockAudioDevice(SDL_AudioDeviceID devid)
{
/* Obtain a lock on the mixing buffers */
SDL_AudioDevice *device = get_audio_device(devid);
if (device) {
current_audio.impl.LockDevice(device);
}
}
void
SDL_LockAudio(void)
{
SDL_LockAudioDevice(1);
}
void
SDL_UnlockAudioDevice(SDL_AudioDeviceID devid)
{
/* Obtain a lock on the mixing buffers */
SDL_AudioDevice *device = get_audio_device(devid);
if (device) {
current_audio.impl.UnlockDevice(device);
}
}
void
SDL_UnlockAudio(void)
{
SDL_UnlockAudioDevice(1);
}
void
SDL_CloseAudioDevice(SDL_AudioDeviceID devid)
{
SDL_AudioDevice *device = get_audio_device(devid);
if (device) {
close_audio_device(device);
open_devices[devid - 1] = NULL;
}
}
void
SDL_CloseAudio(void)
{
SDL_CloseAudioDevice(1);
}
void
SDL_AudioQuit(void)
{
SDL_AudioDeviceID i;
if (!current_audio.name) { /* not initialized?! */
return;
}
for (i = 0; i < SDL_arraysize(open_devices); i++) {
if (open_devices[i] != NULL) {
SDL_CloseAudioDevice(i+1);
}
}
free_device_list(&current_audio.outputDevices, &current_audio.outputDeviceCount);
free_device_list(&current_audio.inputDevices, &current_audio.inputDeviceCount);
/* Free the driver data */
current_audio.impl.Deinitialize();
SDL_DestroyMutex(current_audio.detectionLock);
SDL_zero(current_audio);
SDL_zero(open_devices);
}
#define NUM_FORMATS 10
static int format_idx;
static int format_idx_sub;
static SDL_AudioFormat format_list[NUM_FORMATS][NUM_FORMATS] = {
{AUDIO_U8, AUDIO_S8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB,
AUDIO_U16MSB, AUDIO_S32LSB, AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB},
{AUDIO_S8, AUDIO_U8, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB,
AUDIO_U16MSB, AUDIO_S32LSB, AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB},
{AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S32LSB,
AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB, AUDIO_U8, AUDIO_S8},
{AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S32MSB,
AUDIO_S32LSB, AUDIO_F32MSB, AUDIO_F32LSB, AUDIO_U8, AUDIO_S8},
{AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_S16LSB, AUDIO_S16MSB, AUDIO_S32LSB,
AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB, AUDIO_U8, AUDIO_S8},
{AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_S16MSB, AUDIO_S16LSB, AUDIO_S32MSB,
AUDIO_S32LSB, AUDIO_F32MSB, AUDIO_F32LSB, AUDIO_U8, AUDIO_S8},
{AUDIO_S32LSB, AUDIO_S32MSB, AUDIO_F32LSB, AUDIO_F32MSB, AUDIO_S16LSB,
AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8, AUDIO_S8},
{AUDIO_S32MSB, AUDIO_S32LSB, AUDIO_F32MSB, AUDIO_F32LSB, AUDIO_S16MSB,
AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8},
{AUDIO_F32LSB, AUDIO_F32MSB, AUDIO_S32LSB, AUDIO_S32MSB, AUDIO_S16LSB,
AUDIO_S16MSB, AUDIO_U16LSB, AUDIO_U16MSB, AUDIO_U8, AUDIO_S8},
{AUDIO_F32MSB, AUDIO_F32LSB, AUDIO_S32MSB, AUDIO_S32LSB, AUDIO_S16MSB,
AUDIO_S16LSB, AUDIO_U16MSB, AUDIO_U16LSB, AUDIO_U8, AUDIO_S8},
};
SDL_AudioFormat
SDL_FirstAudioFormat(SDL_AudioFormat format)
{
for (format_idx = 0; format_idx < NUM_FORMATS; ++format_idx) {
if (format_list[format_idx][0] == format) {
break;
}
}
format_idx_sub = 0;
return SDL_NextAudioFormat();
}
SDL_AudioFormat
SDL_NextAudioFormat(void)
{
if ((format_idx == NUM_FORMATS) || (format_idx_sub == NUM_FORMATS)) {
return 0;
}
return format_list[format_idx][format_idx_sub++];
}
void
SDL_CalculateAudioSpec(SDL_AudioSpec * spec)
{
switch (spec->format) {
case AUDIO_U8:
spec->silence = 0x80;
break;
default:
spec->silence = 0x00;
break;
}
spec->size = SDL_AUDIO_BITSIZE(spec->format) / 8;
spec->size *= spec->channels;
spec->size *= spec->samples;
}
/*
* Moved here from SDL_mixer.c, since it relies on internals of an opened
* audio device (and is deprecated, by the way!).
*/
void
SDL_MixAudio(Uint8 * dst, const Uint8 * src, Uint32 len, int volume)
{
/* Mix the user-level audio format */
SDL_AudioDevice *device = get_audio_device(1);
if (device != NULL) {
SDL_AudioFormat format;
if (device->convert.needed) {
format = device->convert.src_format;
} else {
format = device->spec.format;
}
SDL_MixAudioFormat(dst, src, format, len, volume);
}
}
/* vi: set ts=4 sw=4 expandtab: */
open_devices
static SDL_AudioDevice * open_devices[16]
Definition: SDL_audio.c:34
SDL_ThreadID
#define SDL_ThreadID
Definition: SDL_dynapi_overrides.h:479
format_idx_sub
static int format_idx_sub
Definition: SDL_audio.c:1373
DISKAUD_bootstrap
AudioBootStrap DISKAUD_bootstrap
SDL_LockAudioDevice
void SDL_LockAudioDevice(SDL_AudioDeviceID devid)
Definition: SDL_audio.c:1297
SDL_strlcpy
#define SDL_strlcpy
Definition: SDL_dynapi_overrides.h:400
dst
GLenum GLenum dst
Definition: SDL_opengl_glext.h:1737
SDL_sysaudio.h
SDL_AudioDevice::id
SDL_AudioDeviceID id
Definition: SDL_sysaudio.h:147
SDL_AUDIO_ALLOW_FREQUENCY_CHANGE
#define SDL_AUDIO_ALLOW_FREQUENCY_CHANGE
Definition: SDL_audio.h:140
SDL_UnlockAudio
void SDL_UnlockAudio(void)
Definition: SDL_audio.c:1323
SDL_LockMutex
#define SDL_LockMutex
Definition: SDL_dynapi_overrides.h:266
format
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: SDL_opengl.h:1565
id
GLuint id
Definition: SDL_opengl_glext.h:528
SDL_AudioBufferQueue::datalen
Uint32 datalen
Definition: SDL_sysaudio.h:64
SUNAUDIO_bootstrap
AudioBootStrap SUNAUDIO_bootstrap
format_idx
static int format_idx
Definition: SDL_audio.c:1372
x1
GLuint GLfloat GLfloat GLfloat x1
Definition: SDL_opengl_glext.h:8583
SDL_AudioDevice::mixer_lock
SDL_mutex * mixer_lock
Definition: SDL_sysaudio.h:171
SDL_min
#define SDL_min(x, y)
Definition: SDL_stdinc.h:347
SDL_FirstAudioFormat
SDL_AudioFormat SDL_FirstAudioFormat(SDL_AudioFormat format)
Definition: SDL_audio.c:1398
AUDIO_S32MSB
#define AUDIO_S32MSB
Definition: SDL_audio.h:104
SDL_AudioDriver::captureDevicesRemoved
SDL_bool captureDevicesRemoved
Definition: SDL_sysaudio.h:124
S32
#define S32
SDL_AudioCVT::len
int len
Definition: SDL_audio.h:207
SDL_audiomem.h
PULSEAUDIO_bootstrap
AudioBootStrap PULSEAUDIO_bootstrap
SDL_AudioDriver::name
const char * name
Definition: SDL_sysaudio.h:114
SDL_AudioDriverImpl::DetectDevices
void(* DetectDevices)(void)
Definition: SDL_sysaudio.h:71
SDL_GetNumAudioDrivers
int SDL_GetNumAudioDrivers(void)
Definition: SDL_audio.c:696
Uint32
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:157
SDL_AudioSpec::silence
Uint8 silence
Definition: SDL_audio.h:173
SDL_OpenAudio
int SDL_OpenAudio(SDL_AudioSpec *desired, SDL_AudioSpec *obtained)
Definition: SDL_audio.c:1219
DUMMYAUD_bootstrap
AudioBootStrap DUMMYAUD_bootstrap
Definition: SDL_dummyaudio.c:44
SDL_GetCurrentAudioDriver
const char * SDL_GetCurrentAudioDriver()
Definition: SDL_audio.c:772
AudioBootStrap::name
const char * name
Definition: SDL_sysaudio.h:191
mark_device_removed
static void mark_device_removed(void *handle, SDL_AudioDeviceItem *devices, SDL_bool *removedFlag)
Definition: SDL_audio.c:390
AUDIO_U16LSB
#define AUDIO_U16LSB
Definition: SDL_audio.h:91
SDL_AudioCVT::buf
Uint8 * buf
Definition: SDL_audio.h:206
stream
GLuint GLuint stream
Definition: SDL_opengl_glext.h:1776
SDL_AudioDeviceItem
Definition: SDL_sysaudio.h:98
SDL_GetAudioDriver
const char * SDL_GetAudioDriver(int index)
Definition: SDL_audio.c:702
SDL_BuildAudioCVT
#define SDL_BuildAudioCVT
Definition: SDL_dynapi_overrides.h:94
NDSAUD_bootstrap
AudioBootStrap NDSAUD_bootstrap
SDL_AudioDeviceItem::next
struct SDL_AudioDeviceItem * next
Definition: SDL_sysaudio.h:101
clean_out_device_list
static void clean_out_device_list(SDL_AudioDeviceItem **devices, int *devCount, SDL_bool *removedFlag)
Definition: SDL_audio.c:779
QSAAUDIO_bootstrap
AudioBootStrap QSAAUDIO_bootstrap
add_output_device
static SDL_INLINE int add_output_device(const char *name, void *handle)
Definition: SDL_audio.c:324
SDL_CreateMutex
#define SDL_CreateMutex
Definition: SDL_dynapi_overrides.h:265
SDL_AudioDriverImpl::HasCaptureSupport
int HasCaptureSupport
Definition: SDL_sysaudio.h:91
SDL_FreeAudioMem
#define SDL_FreeAudioMem
Definition: SDL_audiomem.h:24
format_list
static SDL_AudioFormat format_list[NUM_FORMATS][NUM_FORMATS]
Definition: SDL_audio.c:1374
SDL_AudioDriver::inputDeviceCount
int inputDeviceCount
Definition: SDL_sysaudio.h:127
SDL_AudioCVT::len_ratio
double len_ratio
Definition: SDL_audio.h:210
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1967
SDL_AudioStatus
SDL_AudioStatus
Definition: SDL_audio.h:368
DEFAULT_INPUT_DEVNAME
#define DEFAULT_INPUT_DEVNAME
Definition: SDL_audio.c:38
SDL_AudioDevice::opened
int opened
Definition: SDL_sysaudio.h:165
SDL_AudioDriverImpl::ProvidesOwnCallbackThread
int ProvidesOwnCallbackThread
Definition: SDL_sysaudio.h:89
DCAUD_bootstrap
AudioBootStrap DCAUD_bootstrap
SDL_AudioDevice::shutdown
int shutdown
Definition: SDL_sysaudio.h:163
SDL_OpenAudioDevice
SDL_AudioDeviceID SDL_OpenAudioDevice(const char *device, int iscapture, const SDL_AudioSpec *desired, SDL_AudioSpec *obtained, int allowed_changes)
Definition: SDL_audio.c:1248
SDL_AudioSpec
Definition: SDL_audio.h:168
SDL_AudioDevice::threadid
SDL_threadID threadid
Definition: SDL_sysaudio.h:175
SDL_ENABLE
#define SDL_ENABLE
Definition: SDL_events.h:718
SDL_AudioDriverImpl::PlayDevice
void(* PlayDevice)(_THIS)
Definition: SDL_sysaudio.h:75
SDL_AudioDevice::buffer_queue_pool
SDL_AudioBufferQueue * buffer_queue_pool
Definition: SDL_sysaudio.h:180
SDL_AudioSpec::samples
Uint16 samples
Definition: SDL_audio.h:174
SDL_AudioDriverImpl::WaitDevice
void(* WaitDevice)(_THIS)
Definition: SDL_sysaudio.h:74
SDL_ClearQueuedAudio
void SDL_ClearQueuedAudio(SDL_AudioDeviceID devid)
Definition: SDL_audio.c:573
SDL_OpenedAudioDeviceDisconnected
void SDL_OpenedAudioDeviceDisconnected(SDL_AudioDevice *device)
Definition: SDL_audio.c:364
SDL_AUDIO_PAUSED
Definition: SDL_audio.h:372
SDL_InitSubSystem
#define SDL_InitSubSystem
Definition: SDL_dynapi_overrides.h:61
SDL_MixAudioFormat
#define SDL_MixAudioFormat
Definition: SDL_dynapi_overrides.h:97
SDL_AudioDevice::spec
SDL_AudioSpec spec
Definition: SDL_sysaudio.h:150
SDL_AudioFormat
Uint16 SDL_AudioFormat
Audio format flags.
Definition: SDL_audio.h:64
SDL_GetQueuedAudioSize
Uint32 SDL_GetQueuedAudioSize(SDL_AudioDeviceID devid)
Definition: SDL_audio.c:557
SDL_AudioGetDeviceBuf_Default
static Uint8 * SDL_AudioGetDeviceBuf_Default(_THIS)
Definition: SDL_audio.c:198
SDL_AudioDeviceItem::name
char name[]
Definition: SDL_sysaudio.h:105
name
GLuint const GLchar * name
Definition: SDL_opengl_glext.h:660
SDL_AudioDevice::iscapture
int iscapture
Definition: SDL_sysaudio.h:161
DSOUND_bootstrap
AudioBootStrap DSOUND_bootstrap
SDL_AudioUnlockDevice_Default
static void SDL_AudioUnlockDevice_Default(SDL_AudioDevice *device)
Definition: SDL_audio.c:253
SDL_AudioCVT::len_mult
int len_mult
Definition: SDL_audio.h:209
current_audio
static SDL_AudioDriver current_audio
Definition: SDL_audio.c:33
SDL_AudioDeviceItem::handle
void * handle
Definition: SDL_sysaudio.h:100
SDL_AudioDriverImpl::UnlockDevice
void(* UnlockDevice)(_THIS)
Definition: SDL_sysaudio.h:81
ARTS_bootstrap
AudioBootStrap ARTS_bootstrap
SDL_RunAudio
int SDL_RunAudio(void *devicep)
Definition: SDL_audio.c:595
SDL_strncasecmp
#define SDL_strncasecmp
Definition: SDL_dynapi_overrides.h:426
finalize_audio_entry_points
static void finalize_audio_entry_points(void)
Definition: SDL_audio.c:262
WINMM_bootstrap
AudioBootStrap WINMM_bootstrap
SDL_zerop
#define SDL_zerop(x)
Definition: SDL_stdinc.h:358
size
GLsizeiptr size
Definition: SDL_opengl_glext.h:537
BSD_AUDIO_bootstrap
AudioBootStrap BSD_AUDIO_bootstrap
x2
GLfixed GLfixed x2
Definition: SDL_opengl_glext.h:4583
len
GLenum GLsizei len
Definition: SDL_opengl_glext.h:2926
SDL_THREAD_PRIORITY_HIGH
Definition: SDL_thread.h:62
SDL_NextAudioFormat
SDL_AudioFormat SDL_NextAudioFormat(void)
Definition: SDL_audio.c:1410
SDL_AUDIO_ALLOW_CHANNELS_CHANGE
#define SDL_AUDIO_ALLOW_CHANNELS_CHANGE
Definition: SDL_audio.h:142
DART_bootstrap
AudioBootStrap DART_bootstrap
FILL_STUB
#define FILL_STUB(x)
AUDIO_F32MSB
#define AUDIO_F32MSB
Definition: SDL_audio.h:113
SDL_AudioDriver::detectionLock
SDL_mutex * detectionLock
Definition: SDL_sysaudio.h:123
SDL_AudioDevice::queued_bytes
Uint32 queued_bytes
Definition: SDL_sysaudio.h:181
SDL_AudioDevice::buffer_queue_head
SDL_AudioBufferQueue * buffer_queue_head
Definition: SDL_sysaudio.h:178
SDL_bool
SDL_bool
Definition: SDL_stdinc.h:126
DEFAULT_OUTPUT_DEVNAME
#define DEFAULT_OUTPUT_DEVNAME
Definition: SDL_audio.c:37
spec
SDL_AudioSpec spec
Definition: loopwave.c:35
retval
SDL_bool retval
Definition: testgamecontroller.c:65
SDL_AUDIODEVICEREMOVED
Definition: SDL_events.h:142
AUDIO_U8
#define AUDIO_U8
Definition: SDL_audio.h:89
SDL_LockAudio
void SDL_LockAudio(void)
Definition: SDL_audio.c:1307
SDL_AudioDevice::buffer_queue_tail
SDL_AudioBufferQueue * buffer_queue_tail
Definition: SDL_sysaudio.h:179
SDL_memcpy
#define SDL_memcpy
Definition: SDL_dynapi_overrides.h:393
SDL_AudioBufferQueue
Definition: SDL_sysaudio.h:61
AudioBootStrap
Definition: SDL_sysaudio.h:189
SDL_AudioDeinitialize_Default
static void SDL_AudioDeinitialize_Default(void)
Definition: SDL_audio.c:214
SDL_AudioBufferQueue::next
struct SDL_AudioBufferQueue * next
Definition: SDL_sysaudio.h:66
SDL_AudioDriverImpl::ThreadInit
void(* ThreadInit)(_THIS)
Definition: SDL_sysaudio.h:73
SDL_AudioDriverImpl::OnlyHasDefaultOutputDevice
int OnlyHasDefaultOutputDevice
Definition: SDL_sysaudio.h:92
SDL_AUDIODEVICEADDED
Definition: SDL_events.h:141
SDL_AudioSpec::freq
int freq
Definition: SDL_audio.h:170
SDL_GetAudioDeviceStatus
SDL_AudioStatus SDL_GetAudioDeviceStatus(SDL_AudioDeviceID devid)
Definition: SDL_audio.c:1257
SDL_GetEventState
#define SDL_GetEventState(type)
Definition: SDL_events.h:731
SDL_ConvertAudio
#define SDL_ConvertAudio
Definition: SDL_dynapi_overrides.h:95
NACLAUD_bootstrap
AudioBootStrap NACLAUD_bootstrap
SDL_RemoveAudioDevice
void SDL_RemoveAudioDevice(const int iscapture, void *handle)
Definition: SDL_audio.c:405
SDL_AudioSpec::channels
Uint8 channels
Definition: SDL_audio.h:172
_THIS
#define _THIS
Definition: SDL_audio.c:31
SDL_audio_c.h
Uint8
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:139
SDL_AudioDriver::desc
const char * desc
Definition: SDL_sysaudio.h:118
event
struct _cl_event * event
Definition: SDL_opengl_glext.h:2649
SDL_AudioWaitDevice_Default
static void SDL_AudioWaitDevice_Default(_THIS)
Definition: SDL_audio.c:182
SDL_free
void SDL_free(void *mem)
SDL_AUDIO_BITSIZE
#define SDL_AUDIO_BITSIZE(x)
Definition: SDL_audio.h:75
AUDIO_F32LSB
#define AUDIO_F32LSB
Definition: SDL_audio.h:112
PAUDIO_bootstrap
AudioBootStrap PAUDIO_bootstrap
SDL_AudioQuit
void SDL_AudioQuit(void)
Definition: SDL_audio.c:1345
SDL_AUDIO_ALLOW_ANY_CHANGE
#define SDL_AUDIO_ALLOW_ANY_CHANGE
Definition: SDL_audio.h:143
SDL_PushEvent
#define SDL_PushEvent
Definition: SDL_dynapi_overrides.h:131
SDL_AudioDriverImpl::Deinitialize
void(* Deinitialize)(void)
Definition: SDL_sysaudio.h:83
prepare_audiospec
static int prepare_audiospec(const SDL_AudioSpec *orig, SDL_AudioSpec *prepared)
Definition: SDL_audio.c:905
SDL_UnlockAudioDevice
void SDL_UnlockAudioDevice(SDL_AudioDeviceID devid)
Definition: SDL_audio.c:1313
SDL_AudioOpenDevice_Default
static int SDL_AudioOpenDevice_Default(_THIS, void *handle, const char *devname, int iscapture)
Definition: SDL_audio.c:225
COREAUDIO_bootstrap
AudioBootStrap COREAUDIO_bootstrap
AUDIO_S32LSB
#define AUDIO_S32LSB
Definition: SDL_audio.h:103
SDL_zero
#define SDL_zero(x)
Definition: SDL_stdinc.h:357
SDL_AUDIO_STOPPED
Definition: SDL_audio.h:370
SDL_AudioCVT::needed
int needed
Definition: SDL_audio.h:202
SDL_PauseAudio
void SDL_PauseAudio(int pause_on)
Definition: SDL_audio.c:1290
NUM_FORMATS
#define NUM_FORMATS
Definition: SDL_audio.c:1371
SDL_AudioDriverImpl::SkipMixerLock
int SkipMixerLock
Definition: SDL_sysaudio.h:90
ALSA_bootstrap
AudioBootStrap ALSA_bootstrap
SDL_CalculateAudioSpec
void SDL_CalculateAudioSpec(SDL_AudioSpec *spec)
Definition: SDL_audio.c:1419
SDL_TRUE
Definition: SDL_stdinc.h:129
SDL_AllocAudioMem
#define SDL_AllocAudioMem
Definition: SDL_audiomem.h:23
samples
GLsizei samples
Definition: SDL_opengl_glext.h:1185
SDL_GetAudioStatus
SDL_AudioStatus SDL_GetAudioStatus(void)
Definition: SDL_audio.c:1273
SDL_AudioSpec::callback
SDL_AudioCallback callback
Definition: SDL_audio.h:177
SDL_AudioCVT::src_format
SDL_AudioFormat src_format
Definition: SDL_audio.h:203
SDL_AudioThreadInit_Default
static void SDL_AudioThreadInit_Default(_THIS)
Definition: SDL_audio.c:177
SDL_AudioDetectDevices_Default
static void SDL_AudioDetectDevices_Default(void)
Definition: SDL_audio.c:164
SDL_AudioDevice::fake_stream
Uint8 * fake_stream
Definition: SDL_sysaudio.h:168
SDL_atoi
#define SDL_atoi
Definition: SDL_dynapi_overrides.h:416
index
GLuint index
Definition: SDL_opengl_glext.h:660
add_audio_device
static int add_audio_device(const char *name, void *handle, SDL_AudioDeviceItem **devices, int *devCount)
Definition: SDL_audio.c:293
NAS_bootstrap
AudioBootStrap NAS_bootstrap
SDL_AudioDriverImpl::LockDevice
void(* LockDevice)(_THIS)
Definition: SDL_sysaudio.h:80
SDL_CreateThread
#define SDL_CreateThread
Definition: SDL_dynapi_overrides.h:47
SDL_GetAudioDeviceName
const char * SDL_GetAudioDeviceName(int index, int iscapture)
Definition: SDL_audio.c:833
SDL_Delay
#define SDL_Delay
Definition: SDL_dynapi_overrides.h:490
SDL_getenv
#define SDL_getenv
Definition: SDL_dynapi_overrides.h:384
SDL_AudioDriver::outputDevices
SDL_AudioDeviceItem * outputDevices
Definition: SDL_sysaudio.h:128
SDL_AudioSpec::size
Uint32 size
Definition: SDL_audio.h:176
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:42
SDL_AudioGetPendingBytes_Default
static int SDL_AudioGetPendingBytes_Default(_THIS)
Definition: SDL_audio.c:192
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:167
bootstrap
static const AudioBootStrap *const bootstrap[]
Definition: SDL_audio.c:76
SDL_AudioCVT::len_cvt
int len_cvt
Definition: SDL_audio.h:208
SNDMGR_bootstrap
AudioBootStrap SNDMGR_bootstrap
SDL_AudioDriverImpl::OpenDevice
int(* OpenDevice)(_THIS, void *handle, const char *devname, int iscapture)
Definition: SDL_sysaudio.h:72
SDL_AudioPlayDevice_Default
static void SDL_AudioPlayDevice_Default(_THIS)
Definition: SDL_audio.c:187
NULL
#define NULL
Definition: begin_code.h:143
SDL_OutOfMemory
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SDL_AudioDriver::outputDevicesRemoved
SDL_bool outputDevicesRemoved
Definition: SDL_sysaudio.h:125
free_device_list
static void free_device_list(SDL_AudioDeviceItem **devices, int *devCount)
Definition: SDL_audio.c:330
free_audio_queue
static void free_audio_queue(SDL_AudioBufferQueue *buffer)
Definition: SDL_audio.c:423
DSP_bootstrap
AudioBootStrap DSP_bootstrap
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:36
open_audio_device
static SDL_AudioDeviceID open_audio_device(const char *devname, int iscapture, const SDL_AudioSpec *desired, SDL_AudioSpec *obtained, int allowed_changes, int min_id)
Definition: SDL_audio.c:962
void
SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char const char SDL_SCANF_FORMAT_STRING const char return SDL_ThreadFunction const char void return Uint32 return Uint32 void
Definition: SDL_dynapi_procs.h:93
SDL_AudioDriverImpl::CloseDevice
void(* CloseDevice)(_THIS)
Definition: SDL_sysaudio.h:79
SDL_DestroyMutex
#define SDL_DestroyMutex
Definition: SDL_dynapi_overrides.h:269
SDL_AudioDriverImpl::AllowsArbitraryDeviceNames
int AllowsArbitraryDeviceNames
Definition: SDL_sysaudio.h:94
add_capture_device
static SDL_INLINE int add_capture_device(const char *name, void *handle)
Definition: SDL_audio.c:317
SDL_INIT_AUDIO
#define SDL_INIT_AUDIO
Definition: SDL.h:76
AUDIO_S16MSB
#define AUDIO_S16MSB
Definition: SDL_audio.h:94
SDL_audio.h
SDL_AudioLockDevice_Default
static void SDL_AudioLockDevice_Default(SDL_AudioDevice *device)
Definition: SDL_audio.c:245
SDL_AudioDeviceID
Uint32 SDL_AudioDeviceID
Definition: SDL_audio.h:303
SDL_AudioDriver::impl
SDL_AudioDriverImpl impl
Definition: SDL_sysaudio.h:120
SDL_AudioDriverImpl::FreeDeviceHandle
void(* FreeDeviceHandle)(void *handle)
Definition: SDL_sysaudio.h:82
SDL_AudioDevice
Definition: SDL_sysaudio.h:143
SDL_strlen
#define SDL_strlen
Definition: SDL_dynapi_overrides.h:399
SDL_AudioSpec::format
SDL_AudioFormat format
Definition: SDL_audio.h:171
SDL_AudioDevice::paused
int paused
Definition: SDL_sysaudio.h:164
SDL_AudioBufferQueue::startpos
Uint32 startpos
Definition: SDL_sysaudio.h:65
XAUDIO2_bootstrap
AudioBootStrap XAUDIO2_bootstrap
SDL_AudioDriver::outputDeviceCount
int outputDeviceCount
Definition: SDL_sysaudio.h:126
SDL_FALSE
Definition: SDL_stdinc.h:128
HAIKUAUDIO_bootstrap
AudioBootStrap HAIKUAUDIO_bootstrap
buffer
GLuint buffer
Definition: SDL_opengl_glext.h:533
AUDIO_S16
#define AUDIO_S16
Definition: SDL_audio.h:96
AUDIO_S16LSB
#define AUDIO_S16LSB
Definition: SDL_audio.h:92
SDL_CloseAudio
void SDL_CloseAudio(void)
Definition: SDL_audio.c:1339
SDL_AudioDriverImpl::GetDeviceBuf
Uint8 *(* GetDeviceBuf)(_THIS)
Definition: SDL_sysaudio.h:77
SDL_GetNumAudioDevices
int SDL_GetNumAudioDevices(int iscapture)
Definition: SDL_audio.c:807
Uint16
uint16_t Uint16
An unsigned 16-bit integer type.
Definition: SDL_stdinc.h:147
SDL_AudioSpec::userdata
void * userdata
Definition: SDL_audio.h:178
SDL_AUDIO_ALLOW_FORMAT_CHANGE
#define SDL_AUDIO_ALLOW_FORMAT_CHANGE
Definition: SDL_audio.h:141
AudioBootStrap::demand_only
int demand_only
Definition: SDL_sysaudio.h:194
SDL_snprintf
#define SDL_snprintf
Definition: SDL_dynapi_overrides.h:46
SDL_ParseAudioFormat
static SDL_AudioFormat SDL_ParseAudioFormat(const char *string)
Definition: SDL_audio.c:670
SDL_UnlockMutex
#define SDL_UnlockMutex
Definition: SDL_dynapi_overrides.h:268
SDL_arraysize
#define SDL_arraysize(array)
Definition: SDL_stdinc.h:93
SDL_AudioBufferQueue::data
Uint8 data[SDL_AUDIOBUFFERQUEUE_PACKETLEN]
Definition: SDL_sysaudio.h:63
SDL_INLINE
#define SDL_INLINE
Definition: begin_code.h:120
SDL_Event
General event structure.
Definition: SDL_events.h:521
SDL_malloc
#define SDL_malloc
Definition: SDL_dynapi_overrides.h:380
AudioBootStrap::init
int(* init)(SDL_AudioDriverImpl *impl)
Definition: SDL_sysaudio.h:193
SDL_AudioCloseDevice_Default
static void SDL_AudioCloseDevice_Default(_THIS)
Definition: SDL_audio.c:209
SDL_AudioDriverImpl::GetPendingBytes
int(* GetPendingBytes)(_THIS)
Definition: SDL_sysaudio.h:76
SDL_strcmp
#define SDL_strcmp
Definition: SDL_dynapi_overrides.h:423
AudioBootStrap::desc
const char * desc
Definition: SDL_sysaudio.h:192
ESD_bootstrap
AudioBootStrap ESD_bootstrap
SDL_AudioDriverImpl::OnlyHasDefaultInputDevice
int OnlyHasDefaultInputDevice
Definition: SDL_sysaudio.h:93
SDL_AudioDevice::thread
SDL_Thread * thread
Definition: SDL_sysaudio.h:174
SDL_AUDIO_PLAYING
Definition: SDL_audio.h:371
SDL_WasInit
#define SDL_WasInit
Definition: SDL_dynapi_overrides.h:63
SDL_CloseAudioDevice
void SDL_CloseAudioDevice(SDL_AudioDeviceID devid)
Definition: SDL_audio.c:1329
SDL_AudioWaitDone_Default
static void SDL_AudioWaitDone_Default(_THIS)
Definition: SDL_audio.c:204
SDL_AudioDevice::enabled
int enabled
Definition: SDL_sysaudio.h:162
SDL_AUDIOBUFFERQUEUE_PACKETLEN
#define SDL_AUDIOBUFFERQUEUE_PACKETLEN
Definition: SDL_sysaudio.h:58
ANDROIDAUD_bootstrap
AudioBootStrap ANDROIDAUD_bootstrap
SDL_AudioDevice::convert
SDL_AudioCVT convert
Definition: SDL_sysaudio.h:153
SDL.h
SDL_BufferQueueDrainCallback
static void SDL_BufferQueueDrainCallback(void *userdata, Uint8 *stream, int _len)
Definition: SDL_audio.c:433
AUDIO_S8
#define AUDIO_S8
Definition: SDL_audio.h:90
SDL_AudioDriver
Definition: SDL_sysaudio.h:110
SDL_MixAudio
void SDL_MixAudio(Uint8 *dst, const Uint8 *src, Uint32 len, int volume)
Definition: SDL_audio.c:1440
CHECK_FMT_STRING
#define CHECK_FMT_STRING(x)
src
GLenum src
Definition: SDL_opengl_glext.h:1737
SDLCALL
#define SDLCALL
Definition: SDL_internal.h:31
SDL_PauseAudioDevice
void SDL_PauseAudioDevice(SDL_AudioDeviceID devid, int pause_on)
Definition: SDL_audio.c:1279
get_audio_device
static SDL_AudioDevice * get_audio_device(SDL_AudioDeviceID id)
Definition: SDL_audio.c:150
SDL_Unsupported
#define SDL_Unsupported()
Definition: SDL_error.h:53
PSPAUD_bootstrap
AudioBootStrap PSPAUD_bootstrap
is_in_audio_device_thread
static SDL_INLINE SDL_bool is_in_audio_device_thread(SDL_AudioDevice *device)
Definition: SDL_audio.c:231
SDL_SetThreadPriority
#define SDL_SetThreadPriority
Definition: SDL_dynapi_overrides.h:481
EmscriptenAudio_bootstrap
AudioBootStrap EmscriptenAudio_bootstrap
SDL_AudioDriver::inputDevices
SDL_AudioDeviceItem * inputDevices
Definition: SDL_sysaudio.h:129
SDL_memset
#define SDL_memset
Definition: SDL_dynapi_overrides.h:392
SDL_AudioDriverImpl::WaitDone
void(* WaitDone)(_THIS)
Definition: SDL_sysaudio.h:78
SDL_AudioFreeDeviceHandle_Default
static void SDL_AudioFreeDeviceHandle_Default(void *handle)
Definition: SDL_audio.c:219
SNDIO_bootstrap
AudioBootStrap SNDIO_bootstrap
SDL_AudioInit
int SDL_AudioInit(const char *driver_name)
Definition: SDL_audio.c:711
SDL_WaitThread
#define SDL_WaitThread
Definition: SDL_dynapi_overrides.h:482
AUDIO_U16MSB
#define AUDIO_U16MSB
Definition: SDL_audio.h:93
SDL_AddAudioDevice
void SDL_AddAudioDevice(const int iscapture, const char *name, void *handle)
Definition: SDL_audio.c:347
close_audio_device
static void close_audio_device(SDL_AudioDevice *device)
Definition: SDL_audio.c:873
FUSIONSOUND_bootstrap
AudioBootStrap FUSIONSOUND_bootstrap
SDL_QueueAudio
int SDL_QueueAudio(SDL_AudioDeviceID devid, const void *_data, Uint32 len)
Definition: SDL_audio.c:475