FORCE_ALIGN static int PlaybackThreadProc(void *arg)
{
ALCdevice *Device = (ALCdevice*)arg;
WinMMData *data = Device->ExtraData;
WAVEHDR *WaveHdr;
MSG msg;
SetRTPriority();
althrd_setname(althrd_current(), MIXER_THREAD_NAME);
while(GetMessage(&msg, NULL, 0, 0))
{
if(msg.message != WOM_DONE)
continue;
if(data->killNow)
{
if(ReadRef(&data->WaveBuffersCommitted) == 0)
break;
continue;
}
WaveHdr = ((WAVEHDR*)msg.lParam);
aluMixData(Device, WaveHdr->lpData, WaveHdr->dwBufferLength /
data->Format.nBlockAlign);
// Send buffer back to play more data
waveOutWrite(data->WaveHandle.Out, WaveHdr, sizeof(WAVEHDR));
IncrementRef(&data->WaveBuffersCommitted);
}
return 0;
}
void g_processBuffer(void *buffer, size_t size)
{
if (g_mixerRunning)
{
aluMixData(g_device, buffer, size);
}
}
/*
PlaybackThreadProc
Used by "MMSYSTEM" Device. Called when a WaveOut buffer has used up its
audio data.
*/
static DWORD WINAPI PlaybackThreadProc(LPVOID lpParameter)
{
ALCdevice *pDevice = (ALCdevice*)lpParameter;
WinMMData *pData = pDevice->ExtraData;
LPWAVEHDR pWaveHdr;
ALuint FrameSize;
MSG msg;
FrameSize = FrameSizeFromDevFmt(pDevice->FmtChans, pDevice->FmtType);
while(GetMessage(&msg, NULL, 0, 0))
{
if(msg.message != WOM_DONE || pData->bWaveShutdown)
continue;
pWaveHdr = ((LPWAVEHDR)msg.lParam);
aluMixData(pDevice, pWaveHdr->lpData, pWaveHdr->dwBufferLength/FrameSize);
// Send buffer back to play more data
waveOutWrite(pData->hWaveHandle.Out, pWaveHdr, sizeof(WAVEHDR));
InterlockedIncrement(&pData->lWaveBuffersCommitted);
}
// Signal Wave Thread completed event
if(pData->hWaveThreadEvent)
SetEvent(pData->hWaveThreadEvent);
ExitThread(0);
return 0;
}
static ALuint sndio_proc(ALvoid *ptr)
{
ALCdevice *device = ptr;
sndio_data *data = device->ExtraData;
ALsizei frameSize;
size_t wrote;
SetRTPriority();
frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
while(!data->killNow && device->Connected)
{
ALsizei len = data->data_size;
ALubyte *WritePtr = data->mix_data;
aluMixData(device, WritePtr, len/frameSize);
while(len > 0 && !data->killNow)
{
wrote = sio_write(data->sndHandle, WritePtr, len);
if(wrote == 0)
{
ERR("sio_write failed\n");
aluHandleDisconnect(device);
break;
}
len -= wrote;
WritePtr += wrote;
}
}
return 0;
}
FORCE_ALIGN static int ALCwinmmPlayback_mixerProc(void *arg)
{
ALCwinmmPlayback *self = arg;
ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
WAVEHDR *WaveHdr;
MSG msg;
SetRTPriority();
althrd_setname(althrd_current(), MIXER_THREAD_NAME);
while(GetMessage(&msg, NULL, 0, 0))
{
if(msg.message != WOM_DONE)
continue;
if(ATOMIC_LOAD(&self->killNow, almemory_order_acquire))
{
if(ReadRef(&self->WaveBuffersCommitted) == 0)
break;
continue;
}
WaveHdr = ((WAVEHDR*)msg.lParam);
ALCwinmmPlayback_lock(self);
aluMixData(device, WaveHdr->lpData, WaveHdr->dwBufferLength /
self->Format.nBlockAlign);
ALCwinmmPlayback_unlock(self);
// Send buffer back to play more data
waveOutWrite(self->OutHdl, WaveHdr, sizeof(WAVEHDR));
IncrementRef(&self->WaveBuffersCommitted);
}
return 0;
}
// PulseAudio I/O Callbacks //{{{
static void stream_write_callback( pa_stream* stream, size_t len, void* pdata ) //{{{
{
ALCdevice* Device = pdata;
pulse_data* data = Device->ExtraData;
while ( len > 0 )
{
size_t newlen = len;
void* buf;
pa_free_cb_t free_func = NULL;
#if PA_CHECK_VERSION(0,9,16)
if ( !ppa_stream_begin_write ||
ppa_stream_begin_write( stream, &buf, &newlen ) < 0 )
#endif
{
buf = ppa_xmalloc( newlen );
free_func = ppa_xfree;
}
aluMixData( Device, buf, newlen / data->frame_size );
ppa_stream_write( stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE );
len -= newlen;
}
} //}}}
static void *playback_function(void * context) {
LOGV("playback_function started");
outputBuffer_t *buffer = NULL;
SLresult result;
struct timespec ts;
int rc;
assert(NULL != context);
ALCdevice *pDevice = (ALCdevice *) context;
opesles_data_t *devState = (opesles_data_t *) pDevice->ExtraData;
unsigned int bufferIndex = devState->lastBufferMixed;
ALint frameSize = FrameSizeFromDevFmt(pDevice->FmtChans, pDevice->FmtType);
// Show a sensible name for the thread in debug tools
prctl(PR_SET_NAME, (unsigned long)"OpenAL/sl/m", 0, 0, 0);
while (1) {
if (devState->threadShouldRun == 0) {
return NULL;
}
bufferIndex = (++bufferIndex) % bufferCount;
buffer = &(devState->outputBuffers[bufferIndex]);
pthread_mutex_lock(&(buffer->mutex));
while (1) {
if (devState->threadShouldRun == 0) {
pthread_mutex_unlock(&(buffer->mutex));
return NULL;
}
// This is a little hacky, but here we avoid mixing too much data
if (buffer->state == OUTPUT_BUFFER_STATE_FREE) {
int i = (bufferIndex - premixCount) % bufferCount;
outputBuffer_t *buffer1 = &(devState->outputBuffers[i]);
if (buffer1->state == OUTPUT_BUFFER_STATE_ENQUEUED ||
buffer1->state == OUTPUT_BUFFER_STATE_FREE) {
break;
}
}
// No buffer available, wait for a buffer to become available
// or until playback is stopped/suspended
clock_gettime(CLOCK_REALTIME, &ts);
ts.tv_nsec += 5000000;
rc = pthread_cond_timedwait(&(buffer->cond), &(buffer->mutex), &ts);
}
devState->threadIsReady = 1;
aluMixData(pDevice, buffer->buffer, bufferSize/frameSize);
buffer->state = OUTPUT_BUFFER_STATE_MIXED;
pthread_cond_signal(&(buffer->cond));
pthread_mutex_unlock(&(buffer->mutex));
devState->lastBufferMixed = bufferIndex;
}
}
static int pa_callback(const void *UNUSED(inputBuffer), void *outputBuffer,
unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *UNUSED(timeInfo),
const PaStreamCallbackFlags UNUSED(statusFlags), void *userData)
{
ALCdevice *device = (ALCdevice*)userData;
aluMixData(device, outputBuffer, framesPerBuffer);
return 0;
}
static ALuint ALSANoMMapProc(ALvoid *ptr)
{
ALCdevice *Device = (ALCdevice*)ptr;
alsa_data *data = (alsa_data*)Device->ExtraData;
snd_pcm_sframes_t avail;
char *WritePtr;
SetRTPriority();
while(!data->killNow)
{
int state = verify_state(data->pcmHandle);
if(state < 0)
{
ERR("Invalid state detected: %s\n", snd_strerror(state));
aluHandleDisconnect(Device);
break;
}
WritePtr = data->buffer;
avail = data->size / snd_pcm_frames_to_bytes(data->pcmHandle, 1);
aluMixData(Device, WritePtr, avail);
while(avail > 0)
{
int ret = snd_pcm_writei(data->pcmHandle, WritePtr, avail);
switch (ret)
{
case -EAGAIN:
continue;
case -ESTRPIPE:
case -EPIPE:
case -EINTR:
ret = snd_pcm_recover(data->pcmHandle, ret, 1);
if(ret < 0)
avail = 0;
break;
default:
if (ret >= 0)
{
WritePtr += snd_pcm_frames_to_bytes(data->pcmHandle, ret);
avail -= ret;
}
break;
}
if (ret < 0)
{
ret = snd_pcm_prepare(data->pcmHandle);
if(ret < 0)
break;
}
}
}
return 0;
}
static OSStatus ca_callback(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp,
UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData)
{
ALCdevice *device = (ALCdevice*)inRefCon;
ca_data *data = (ca_data*)device->ExtraData;
aluMixData(device, ioData->mBuffers[0].mData,
ioData->mBuffers[0].mDataByteSize / data->frameSize);
return noErr;
}
// PulseAudio I/O Callbacks //{{{
static void stream_write_callback(pa_stream *stream, size_t len, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
void *buf = ppa_xmalloc0(data->attr.minreq);
(void)len;
aluMixData(Device, buf, data->attr.minreq/data->frame_size);
ppa_stream_write(stream, buf, data->attr.minreq, ppa_xfree, 0,
PA_SEEK_RELATIVE);
} //}}}
/* this callback handler is called every time a buffer finishes playing */
static void opensl_callback(SLAndroidSimpleBufferQueueItf bq, void *context)
{
ALCdevice *Device = context;
osl_data *data = Device->ExtraData;
SLresult result;
aluMixData(Device, data->buffer, data->bufferSize/data->frameSize);
result = (*bq)->Enqueue(bq, data->buffer, data->bufferSize);
PRINTERR(result, "bq->Enqueue");
}
static ALuint ALSANoMMapProc(ALvoid *ptr)
{
ALCdevice *pDevice = (ALCdevice*)ptr;
alsa_data *data = (alsa_data*)pDevice->ExtraData;
snd_pcm_sframes_t avail;
char *WritePtr;
while(!data->killNow)
{
int state = verify_state(data->pcmHandle);
if(state < 0)
{
AL_PRINT("Invalid state detected: %s\n", psnd_strerror(state));
aluHandleDisconnect(pDevice);
break;
}
WritePtr = data->buffer;
avail = data->size / psnd_pcm_frames_to_bytes(data->pcmHandle, 1);
aluMixData(pDevice, WritePtr, avail);
while(avail > 0)
{
int ret = psnd_pcm_writei(data->pcmHandle, WritePtr, avail);
switch (ret)
{
case -EAGAIN:
continue;
case -ESTRPIPE:
while((ret=psnd_pcm_resume(data->pcmHandle)) == -EAGAIN)
Sleep(1);
break;
case -EPIPE:
break;
default:
if (ret >= 0)
{
WritePtr += psnd_pcm_frames_to_bytes(data->pcmHandle, ret);
avail -= ret;
}
break;
}
if (ret < 0)
{
ret = psnd_pcm_prepare(data->pcmHandle);
if(ret < 0)
break;
}
}
}
return 0;
}
// PulseAudio I/O Callbacks //{{{
static void stream_write_callback(pa_stream *stream, size_t len, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
len -= len%data->attr.minreq;
if(len > 0)
{
void *buf = ppa_xmalloc0(len);
aluMixData(Device, buf, len/data->frame_size);
ppa_stream_write(stream, buf, len, ppa_xfree, 0, PA_SEEK_RELATIVE);
}
} //}}}
static int pa_callback(const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *timeInfo,
const PaStreamCallbackFlags statusFlags, void *userData)
{
ALCdevice *device = (ALCdevice*)userData;
(void)inputBuffer;
(void)timeInfo;
(void)statusFlags;
aluMixData(device, outputBuffer, framesPerBuffer);
return 0;
}
static void* thread_function(void* arg)
{
ALCdevice* device = (ALCdevice*)arg;
AndroidData* data = (AndroidData*)device->ExtraData;
JNIEnv* env;
(*javaVM)->AttachCurrentThread(javaVM, &env, NULL);
(*env)->PushLocalFrame(env, 2);
int sampleRateInHz = device->Frequency;
int channelConfig = aluChannelsFromFormat(device->Format) == 1 ? CHANNEL_CONFIGURATION_MONO : CHANNEL_CONFIGURATION_STEREO;
int audioFormat = aluBytesFromFormat(device->Format) == 1 ? ENCODING_PCM_8BIT : ENCODING_PCM_16BIT;
int bufferSizeInBytes = (*env)->CallStaticIntMethod(env, cAudioTrack,
mGetMinBufferSize, sampleRateInHz, channelConfig, audioFormat) / 4;
int bufferSizeInSamples = bufferSizeInBytes / aluFrameSizeFromFormat(device->Format);
jobject track = (*env)->NewObject(env, cAudioTrack, mAudioTrack,
STREAM_MUSIC, sampleRateInHz, channelConfig, audioFormat, device->NumUpdates * bufferSizeInBytes, MODE_STREAM);
(*env)->CallNonvirtualVoidMethod(env, track, cAudioTrack, mPlay);
jarray buffer = (*env)->NewByteArray(env, bufferSizeInBytes);
while (data->running)
{
void* pBuffer = (*env)->GetPrimitiveArrayCritical(env, buffer, NULL);
if (pBuffer)
{
aluMixData(device, pBuffer, bufferSizeInSamples);
(*env)->ReleasePrimitiveArrayCritical(env, buffer, pBuffer, 0);
(*env)->CallNonvirtualIntMethod(env, track, cAudioTrack, mWrite, buffer, 0, bufferSizeInBytes);
}
else
{
AL_PRINT("Failed to get pointer to array bytes");
}
}
(*env)->CallNonvirtualVoidMethod(env, track, cAudioTrack, mStop);
(*env)->CallNonvirtualVoidMethod(env, track, cAudioTrack, mRelease);
(*env)->PopLocalFrame(env, NULL);
(*javaVM)->DetachCurrentThread(javaVM);
return NULL;
}
static int ALCnullBackend_mixerProc(void *ptr)
{
ALCnullBackend *self = (ALCnullBackend*)ptr;
ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
struct timespec now, start;
ALuint64 avail, done;
const long restTime = (long)((ALuint64)device->UpdateSize * 1000000000 /
device->Frequency / 2);
SetRTPriority();
althrd_setname(althrd_current(), MIXER_THREAD_NAME);
done = 0;
if(altimespec_get(&start, AL_TIME_UTC) != AL_TIME_UTC)
{
ERR("Failed to get starting time\n");
return 1;
}
while(!ATOMIC_LOAD(&self->killNow, almemory_order_acquire) &&
ATOMIC_LOAD(&device->Connected, almemory_order_acquire))
{
if(altimespec_get(&now, AL_TIME_UTC) != AL_TIME_UTC)
{
ERR("Failed to get current time\n");
return 1;
}
avail = (now.tv_sec - start.tv_sec) * device->Frequency;
avail += (ALint64)(now.tv_nsec - start.tv_nsec) * device->Frequency / 1000000000;
if(avail < done)
{
/* Oops, time skipped backwards. Reset the number of samples done
* with one update available since we (likely) just came back from
* sleeping. */
done = avail - device->UpdateSize;
}
if(avail-done < device->UpdateSize)
al_nssleep(restTime);
else while(avail-done >= device->UpdateSize)
{
ALCnullBackend_lock(self);
aluMixData(device, NULL, device->UpdateSize);
ALCnullBackend_unlock(self);
done += device->UpdateSize;
}
}
return 0;
}
/* this callback handler is called every time a buffer finishes playing */
static void opensl_callback(SLAndroidSimpleBufferQueueItf bq, void *context)
{
ALCdevice *Device = context;
osl_data *data = Device->ExtraData;
ALvoid *buf;
SLresult result;
buf = (ALbyte*)data->buffer + data->curBuffer*data->bufferSize;
aluMixData(Device, buf, data->bufferSize/data->frameSize);
result = VCALL(bq,Enqueue)(buf, data->bufferSize);
PRINTERR(result, "bq->Enqueue");
data->curBuffer = (data->curBuffer+1) % Device->NumUpdates;
}
static ALuint PulseProc(ALvoid *param)
{
ALCdevice *Device = param;
pulse_data *data = Device->ExtraData;
ssize_t len;
SetRTPriority();
pa_threaded_mainloop_lock(data->loop);
do {
len = (Device->Connected ? pa_stream_writable_size(data->stream) : 0);
len -= len%(Device->UpdateSize*data->frame_size);
if(len == 0)
{
pa_threaded_mainloop_wait(data->loop);
continue;
}
while(len > 0)
{
size_t newlen = len;
void *buf;
pa_free_cb_t free_func = NULL;
#if PA_CHECK_VERSION(0,9,16)
if(!pa_stream_begin_write ||
pa_stream_begin_write(data->stream, &buf, &newlen) < 0)
#endif
{
buf = pa_xmalloc(newlen);
free_func = pa_xfree;
}
pa_threaded_mainloop_unlock(data->loop);
aluMixData(Device, buf, newlen/data->frame_size);
pa_threaded_mainloop_lock(data->loop);
pa_stream_write(data->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
len -= newlen;
}
} while(Device->Connected && !data->killNow);
pa_threaded_mainloop_unlock(data->loop);
return 0;
}
COM_DECLSPEC_NOTHROW void STDMETHODCALLTYPE XAudio2SourceVoiceCallback::OnVoiceProcessingPassStart(UINT32 numBytesRequired)
{
XAudio2Data* data = (XAudio2Data*)device->ExtraData;
LONG running;
if (data->buffer == NULL)
{
CreateBuffer(data, numBytesRequired);
SetEvent(this->callbackEvent);
}
else {
InterlockedExchange(&running, data->running);
if (running)
{
HRESULT hr;
if (data->bufferSize < numBytesRequired)
CreateBuffer(data, numBytesRequired);
size_t samples = numBytesRequired / data->frameSize;
size_t bufferRegionSize = samples * data->frameSize;//must be divisible by frame size
aluMixData(device, data->buffer, samples);//mix data
#if 0//audio glitch simulation
for (int i = 0; i < 10000000; ++i)
{
int a = 0;
}
#endif
/*------------submit buffer region-------------*/
XAUDIO2_BUFFER bufferRegionToSubmit;
memset(&bufferRegionToSubmit, 0, sizeof(bufferRegionToSubmit));
bufferRegionToSubmit.AudioBytes = bufferRegionSize;
bufferRegionToSubmit.pAudioData = data->buffer;
hr = data->sourceVoice->SubmitSourceBuffer(&bufferRegionToSubmit);
if (FAILED(hr))
{
ERR("SubmitSourceBuffer() failed: 0x%08lx\n", hr);
}
}//if (running)
}//if (data->buffer == NULL)
}
static ALuint OSSProc( ALvoid* ptr )
{
ALCdevice* pDevice = ( ALCdevice* )ptr;
oss_data* data = ( oss_data* )pDevice->ExtraData;
ALint frameSize;
ssize_t wrote;
SetRTPriority();
frameSize = aluFrameSizeFromFormat( pDevice->Format );
while ( !data->killNow && pDevice->Connected )
{
ALint len = data->data_size;
ALubyte* WritePtr = data->mix_data;
aluMixData( pDevice, WritePtr, len / frameSize );
while ( len > 0 && !data->killNow )
{
wrote = write( data->fd, WritePtr, len );
if ( wrote < 0 )
{
if ( errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR )
{
AL_PRINT( "write failed: %s\n", strerror( errno ) );
aluHandleDisconnect( pDevice );
break;
}
Sleep( 1 );
continue;
}
len -= wrote;
WritePtr += wrote;
}
}
return 0;
}
static ALuint NullProc(ALvoid *ptr)
{
ALCdevice *Device = (ALCdevice*)ptr;
null_data *data = (null_data*)Device->ExtraData;
ALuint now, start;
ALuint64 avail, done;
const ALuint restTime = (ALuint64)Device->UpdateSize * 1000 /
Device->Frequency / 2;
done = 0;
start = timeGetTime();
while(!data->killNow && Device->Connected)
{
now = timeGetTime();
avail = (ALuint64)(now-start) * Device->Frequency / 1000;
if(avail < done)
{
/* Timer wrapped (50 days???). Add the remainder of the cycle to
* the available count and reset the number of samples done */
avail += ((ALuint64)1<<32)*Device->Frequency/1000 - done;
done = 0;
}
if(avail-done < Device->UpdateSize)
{
Sleep(restTime);
continue;
}
while(avail-done >= Device->UpdateSize)
{
aluMixData(Device, NULL, Device->UpdateSize);
done += Device->UpdateSize;
}
}
return 0;
}
static ALuint OSSProc(ALvoid *ptr)
{
ALCdevice *pDevice = (ALCdevice*)ptr;
oss_data *data = (oss_data*)pDevice->ExtraData;
int remaining = 0;
int wrote;
while(!data->killNow)
{
int len = data->data_size - remaining;
if(len > 0)
{
SuspendContext(NULL);
aluMixData(pDevice->Context, data->mix_data+remaining, len, pDevice->Format);
ProcessContext(NULL);
}
remaining += len;
wrote = write(data->fd, data->mix_data, remaining);
if(wrote < 0)
{
AL_PRINT("write failed: %s\n", strerror(errno));
remaining = 0;
}
else if(wrote > 0)
{
remaining -= wrote;
if(remaining > 0)
memmove(data->mix_data, data->mix_data+wrote, remaining);
}
else
Sleep(1);
}
return 0;
}
static ALuint ALSAProc(ALvoid *ptr)
{
ALCdevice *pDevice = (ALCdevice*)ptr;
alsa_data *data = (alsa_data*)pDevice->ExtraData;
const snd_pcm_channel_area_t *areas = NULL;
snd_pcm_sframes_t avail, commitres;
snd_pcm_uframes_t offset, frames;
char *WritePtr;
int err;
while(!data->killNow)
{
int state = verify_state(data->pcmHandle);
if(state < 0)
{
AL_PRINT("Invalid state detected: %s\n", psnd_strerror(state));
aluHandleDisconnect(pDevice);
break;
}
avail = psnd_pcm_avail_update(data->pcmHandle);
if(avail < 0)
{
AL_PRINT("available update failed: %s\n", psnd_strerror(avail));
continue;
}
// make sure there's frames to process
if(avail >= 0 && avail < (snd_pcm_sframes_t)pDevice->UpdateSize)
{
if(state != SND_PCM_STATE_RUNNING)
{
err = psnd_pcm_start(data->pcmHandle);
if(err < 0)
{
AL_PRINT("start failed: %s\n", psnd_strerror(err));
continue;
}
}
if(psnd_pcm_wait(data->pcmHandle, 1000) == 0)
AL_PRINT("Wait timeout... buffer size too low?\n");
continue;
}
avail -= avail%pDevice->UpdateSize;
// it is possible that contiguous areas are smaller, thus we use a loop
while(avail > 0)
{
frames = avail;
err = psnd_pcm_mmap_begin(data->pcmHandle, &areas, &offset, &frames);
if(err < 0)
{
AL_PRINT("mmap begin error: %s\n", psnd_strerror(err));
break;
}
WritePtr = (char*)areas->addr + (offset * areas->step / 8);
aluMixData(pDevice, WritePtr, frames);
commitres = psnd_pcm_mmap_commit(data->pcmHandle, offset, frames);
if(commitres < 0 || (commitres-frames) != 0)
{
AL_PRINT("mmap commit error: %s\n",
psnd_strerror(commitres >= 0 ? -EPIPE : commitres));
break;
}
avail -= frames;
}
}
return 0;
}
static ALuint PulseProc(ALvoid *param)
{
ALCdevice *Device = param;
pulse_data *data = Device->ExtraData;
ALuint buffer_size;
ALint update_size;
size_t frame_size;
ssize_t len;
SetRTPriority();
pa_threaded_mainloop_lock(data->loop);
frame_size = pa_frame_size(&data->spec);
update_size = Device->UpdateSize * frame_size;
/* Sanitize buffer metrics, in case we actually have less than what we
* asked for. */
buffer_size = minu(update_size*Device->NumUpdates, data->attr.tlength);
update_size = minu(update_size, buffer_size/2);
do {
len = pa_stream_writable_size(data->stream) - data->attr.tlength +
buffer_size;
if(len < update_size)
{
if(pa_stream_is_corked(data->stream) == 1)
{
pa_operation *o;
o = pa_stream_cork(data->stream, 0, NULL, NULL);
if(o) pa_operation_unref(o);
}
pa_threaded_mainloop_unlock(data->loop);
Sleep(1);
pa_threaded_mainloop_lock(data->loop);
continue;
}
len -= len%update_size;
while(len > 0)
{
size_t newlen = len;
void *buf;
pa_free_cb_t free_func = NULL;
#if PA_CHECK_VERSION(0,9,16)
if(!pa_stream_begin_write ||
pa_stream_begin_write(data->stream, &buf, &newlen) < 0)
#endif
{
buf = pa_xmalloc(newlen);
free_func = pa_xfree;
}
pa_threaded_mainloop_unlock(data->loop);
aluMixData(Device, buf, newlen/frame_size);
pa_threaded_mainloop_lock(data->loop);
pa_stream_write(data->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
len -= newlen;
}
} while(!data->killNow && Device->Connected);
pa_threaded_mainloop_unlock(data->loop);
return 0;
}
static ALuint DSoundProc(ALvoid *ptr)
{
ALCdevice *pDevice = (ALCdevice*)ptr;
DSoundData *pData = (DSoundData*)pDevice->ExtraData;
DSBCAPS DSBCaps;
DWORD LastCursor = 0;
DWORD PlayCursor;
VOID *WritePtr1, *WritePtr2;
DWORD WriteCnt1, WriteCnt2;
DWORD FrameSize;
DWORD FragSize;
DWORD avail;
HRESULT err;
SetRTPriority();
memset(&DSBCaps, 0, sizeof(DSBCaps));
DSBCaps.dwSize = sizeof(DSBCaps);
err = IDirectSoundBuffer_GetCaps(pData->DSsbuffer, &DSBCaps);
if(FAILED(err))
{
AL_PRINT("Failed to get buffer caps: 0x%lx\n", err);
aluHandleDisconnect(pDevice);
return 1;
}
FrameSize = aluFrameSizeFromFormat(pDevice->Format);
FragSize = pDevice->UpdateSize * FrameSize;
IDirectSoundBuffer_GetCurrentPosition(pData->DSsbuffer, &LastCursor, NULL);
while(!pData->killNow)
{
// Get current play and write cursors
IDirectSoundBuffer_GetCurrentPosition(pData->DSsbuffer, &PlayCursor, NULL);
avail = (PlayCursor-LastCursor+DSBCaps.dwBufferBytes) % DSBCaps.dwBufferBytes;
if(avail < FragSize)
{
Sleep(1);
continue;
}
avail -= avail%FragSize;
// Lock output buffer
WriteCnt1 = 0;
WriteCnt2 = 0;
err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
// If the buffer is lost, restore it, play and lock
if(err == DSERR_BUFFERLOST)
{
err = IDirectSoundBuffer_Restore(pData->DSsbuffer);
if(SUCCEEDED(err))
err = IDirectSoundBuffer_Play(pData->DSsbuffer, 0, 0, DSBPLAY_LOOPING);
if(SUCCEEDED(err))
err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
}
// Successfully locked the output buffer
if(SUCCEEDED(err))
{
// If we have an active context, mix data directly into output buffer otherwise fill with silence
aluMixData(pDevice, WritePtr1, WriteCnt1/FrameSize);
aluMixData(pDevice, WritePtr2, WriteCnt2/FrameSize);
// Unlock output buffer only when successfully locked
IDirectSoundBuffer_Unlock(pData->DSsbuffer, WritePtr1, WriteCnt1, WritePtr2, WriteCnt2);
}
else
AL_PRINT("Buffer lock error: %#lx\n", err);
// Update old write cursor location
LastCursor += WriteCnt1+WriteCnt2;
LastCursor %= DSBCaps.dwBufferBytes;
}
return 0;
}
static ALuint WaveProc( ALvoid* ptr )
{
ALCdevice* pDevice = ( ALCdevice* )ptr;
wave_data* data = ( wave_data* )pDevice->ExtraData;
ALuint frameSize;
ALuint now, last;
size_t fs;
ALuint avail;
union
{
short s;
char b[sizeof( short )];
} uSB;
uSB.s = 1;
frameSize = aluFrameSizeFromFormat( pDevice->Format );
last = timeGetTime() << 8;
while ( !data->killNow && pDevice->Connected )
{
now = timeGetTime() << 8;
avail = ( ALuint64 )( now - last ) * pDevice->Frequency / ( 1000 << 8 );
if ( avail < pDevice->UpdateSize )
{
Sleep( 1 );
continue;
}
while ( avail >= pDevice->UpdateSize )
{
aluMixData( pDevice, data->buffer, pDevice->UpdateSize );
if ( uSB.b[0] != 1 )
{
ALubyte* bytes = data->buffer;
ALuint i;
if ( aluBytesFromFormat( pDevice->Format ) == 1 )
{
for ( i = 0; i < data->size; i++ )
{
fputc( bytes[i], data->f );
}
}
else if ( aluBytesFromFormat( pDevice->Format ) == 2 )
{
for ( i = 0; i < data->size; i++ )
{
fputc( bytes[i ^ 1], data->f );
}
}
else if ( aluBytesFromFormat( pDevice->Format ) == 4 )
{
for ( i = 0; i < data->size; i++ )
{
fputc( bytes[i ^ 3], data->f );
}
}
}
else
fs = fwrite( data->buffer, frameSize, pDevice->UpdateSize,
data->f );
if ( ferror( data->f ) )
{
AL_PRINT( "Error writing to file\n" );
aluHandleDisconnect( pDevice );
break;
}
avail -= pDevice->UpdateSize;
last += ( ALuint64 )pDevice->UpdateSize * ( 1000 << 8 ) / pDevice->Frequency;
}
}
return 0;
}
static ALuint DSoundPlaybackProc(ALvoid *ptr)
{
ALCdevice *Device = (ALCdevice*)ptr;
DSoundPlaybackData *data = (DSoundPlaybackData*)Device->ExtraData;
DSBCAPS DSBCaps;
DWORD LastCursor = 0;
DWORD PlayCursor;
VOID *WritePtr1, *WritePtr2;
DWORD WriteCnt1, WriteCnt2;
BOOL Playing = FALSE;
DWORD FrameSize;
DWORD FragSize;
DWORD avail;
HRESULT err;
SetRTPriority();
memset(&DSBCaps, 0, sizeof(DSBCaps));
DSBCaps.dwSize = sizeof(DSBCaps);
err = IDirectSoundBuffer_GetCaps(data->Buffer, &DSBCaps);
if(FAILED(err))
{
ERR("Failed to get buffer caps: 0x%lx\n", err);
ALCdevice_Lock(Device);
aluHandleDisconnect(Device);
ALCdevice_Unlock(Device);
return 1;
}
FrameSize = FrameSizeFromDevFmt(Device->FmtChans, Device->FmtType);
FragSize = Device->UpdateSize * FrameSize;
IDirectSoundBuffer_GetCurrentPosition(data->Buffer, &LastCursor, NULL);
while(!data->killNow)
{
// Get current play cursor
IDirectSoundBuffer_GetCurrentPosition(data->Buffer, &PlayCursor, NULL);
avail = (PlayCursor-LastCursor+DSBCaps.dwBufferBytes) % DSBCaps.dwBufferBytes;
if(avail < FragSize)
{
if(!Playing)
{
err = IDirectSoundBuffer_Play(data->Buffer, 0, 0, DSBPLAY_LOOPING);
if(FAILED(err))
{
ERR("Failed to play buffer: 0x%lx\n", err);
ALCdevice_Lock(Device);
aluHandleDisconnect(Device);
ALCdevice_Unlock(Device);
return 1;
}
Playing = TRUE;
}
avail = WaitForSingleObjectEx(data->NotifyEvent, 2000, FALSE);
if(avail != WAIT_OBJECT_0)
ERR("WaitForSingleObjectEx error: 0x%lx\n", avail);
continue;
}
avail -= avail%FragSize;
// Lock output buffer
WriteCnt1 = 0;
WriteCnt2 = 0;
err = IDirectSoundBuffer_Lock(data->Buffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
// If the buffer is lost, restore it and lock
if(err == DSERR_BUFFERLOST)
{
WARN("Buffer lost, restoring...\n");
err = IDirectSoundBuffer_Restore(data->Buffer);
if(SUCCEEDED(err))
{
Playing = FALSE;
LastCursor = 0;
err = IDirectSoundBuffer_Lock(data->Buffer, 0, DSBCaps.dwBufferBytes, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
}
}
// Successfully locked the output buffer
if(SUCCEEDED(err))
{
// If we have an active context, mix data directly into output buffer otherwise fill with silence
aluMixData(Device, WritePtr1, WriteCnt1/FrameSize);
aluMixData(Device, WritePtr2, WriteCnt2/FrameSize);
// Unlock output buffer only when successfully locked
IDirectSoundBuffer_Unlock(data->Buffer, WritePtr1, WriteCnt1, WritePtr2, WriteCnt2);
}
else
{
ERR("Buffer lock error: %#lx\n", err);
ALCdevice_Lock(Device);
aluHandleDisconnect(Device);
ALCdevice_Unlock(Device);
return 1;
}
// Update old write cursor location
LastCursor += WriteCnt1+WriteCnt2;
LastCursor %= DSBCaps.dwBufferBytes;
}
return 0;
}
static ALuint WaveProc(ALvoid *ptr)
{
ALCdevice *pDevice = (ALCdevice*)ptr;
wave_data *data = (wave_data*)pDevice->ExtraData;
ALuint frameSize;
ALuint now, start;
ALuint64 avail, done;
size_t fs;
union {
short s;
char b[sizeof(short)];
} uSB;
const ALuint restTime = (ALuint64)pDevice->UpdateSize * 1000 /
pDevice->Frequency / 2;
uSB.s = 1;
frameSize = FrameSizeFromDevFmt(pDevice->FmtChans, pDevice->FmtType);
done = 0;
start = timeGetTime();
while(!data->killNow && pDevice->Connected)
{
now = timeGetTime();
avail = (ALuint64)(now-start) * pDevice->Frequency / 1000;
if(avail < done)
{
/* Timer wrapped. Add the remainder of the cycle to the available
* count and reset the number of samples done */
avail += (ALuint64)0xFFFFFFFFu*pDevice->Frequency/1000 - done;
done = 0;
}
if(avail-done < pDevice->UpdateSize)
{
Sleep(restTime);
continue;
}
while(avail-done >= pDevice->UpdateSize)
{
aluMixData(pDevice, data->buffer, pDevice->UpdateSize);
done += pDevice->UpdateSize;
if(uSB.b[0] != 1)
{
ALuint bytesize = BytesFromDevFmt(pDevice->FmtType);
ALubyte *bytes = data->buffer;
ALuint i;
if(bytesize == 1)
{
for(i = 0;i < data->size;i++)
fputc(bytes[i], data->f);
}
else if(bytesize == 2)
{
for(i = 0;i < data->size;i++)
fputc(bytes[i^1], data->f);
}
else if(bytesize == 4)
{
for(i = 0;i < data->size;i++)
fputc(bytes[i^3], data->f);
}
}
else
fs = fwrite(data->buffer, frameSize, pDevice->UpdateSize,
data->f);
if(ferror(data->f))
{
AL_PRINT("Error writing to file\n");
aluHandleDisconnect(pDevice);
break;
}
}
}
return 0;
}
FORCE_ALIGN static int qsa_proc_playback(void* ptr)
{
ALCdevice* device=(ALCdevice*)ptr;
qsa_data* data=(qsa_data*)device->ExtraData;
char* write_ptr;
int avail;
snd_pcm_channel_status_t status;
struct sched_param param;
fd_set wfds;
int selectret;
struct timeval timeout;
SetRTPriority();
althrd_setname(althrd_current(), MIXER_THREAD_NAME);
/* Increase default 10 priority to 11 to avoid jerky sound */
SchedGet(0, 0, ¶m);
param.sched_priority=param.sched_curpriority+1;
SchedSet(0, 0, SCHED_NOCHANGE, ¶m);
ALint frame_size=FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
while (!data->killNow)
{
ALint len=data->size;
write_ptr=data->buffer;
avail=len/frame_size;
aluMixData(device, write_ptr, avail);
while (len>0 && !data->killNow)
{
FD_ZERO(&wfds);
FD_SET(data->audio_fd, &wfds);
timeout.tv_sec=2;
timeout.tv_usec=0;
/* Select also works like time slice to OS */
selectret=select(data->audio_fd+1, NULL, &wfds, NULL, &timeout);
switch (selectret)
{
case -1:
aluHandleDisconnect(device);
return 1;
case 0:
break;
default:
if (FD_ISSET(data->audio_fd, &wfds))
{
break;
}
break;
}
int wrote=snd_pcm_plugin_write(data->pcmHandle, write_ptr, len);
if (wrote<=0)
{
if ((errno==EAGAIN) || (errno==EWOULDBLOCK))
{
continue;
}
memset(&status, 0, sizeof (status));
status.channel=SND_PCM_CHANNEL_PLAYBACK;
snd_pcm_plugin_status(data->pcmHandle, &status);
/* we need to reinitialize the sound channel if we've underrun the buffer */
if ((status.status==SND_PCM_STATUS_UNDERRUN) ||
(status.status==SND_PCM_STATUS_READY))
{
if ((snd_pcm_plugin_prepare(data->pcmHandle, SND_PCM_CHANNEL_PLAYBACK))<0)
{
aluHandleDisconnect(device);
break;
}
}
}
else
{
write_ptr+=wrote;
len-=wrote;
}
}
}
return 0;
}
