static ALCuint alsa_available_samples(ALCdevice *Device)
{
alsa_data *data = (alsa_data*)Device->ExtraData;
snd_pcm_sframes_t avail;
avail = (Device->Connected ? snd_pcm_avail_update(data->pcmHandle) : 0);
if(avail < 0)
{
ERR("avail update failed: %s\n", snd_strerror(avail));
if((avail=snd_pcm_recover(data->pcmHandle, avail, 1)) >= 0)
{
if(data->doCapture)
avail = snd_pcm_start(data->pcmHandle);
if(avail >= 0)
avail = snd_pcm_avail_update(data->pcmHandle);
}
if(avail < 0)
{
ERR("restore error: %s\n", snd_strerror(avail));
aluHandleDisconnect(Device);
}
}
while(avail > 0)
{
snd_pcm_sframes_t amt;
amt = snd_pcm_bytes_to_frames(data->pcmHandle, data->size);
if(avail < amt) amt = avail;
amt = snd_pcm_readi(data->pcmHandle, data->buffer, amt);
if(amt < 0)
{
ERR("read error: %s\n", snd_strerror(amt));
if(amt == -EAGAIN)
continue;
if((amt=snd_pcm_recover(data->pcmHandle, amt, 1)) >= 0)
{
if(data->doCapture)
amt = snd_pcm_start(data->pcmHandle);
if(amt >= 0)
amt = snd_pcm_avail_update(data->pcmHandle);
}
if(amt < 0)
{
ERR("restore error: %s\n", snd_strerror(amt));
aluHandleDisconnect(Device);
break;
}
avail = amt;
continue;
}
WriteRingBuffer(data->ring, data->buffer, amt);
avail -= amt;
}
return RingBufferSize(data->ring);
}
static ALCenum pulse_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples)
{
pulse_data *data = device->ExtraData;
ALCuint todo = samples * pa_frame_size(&data->spec);
pa_threaded_mainloop_lock(data->loop);
/* Capture is done in fragment-sized chunks, so we loop until we get all
* that's available */
data->last_readable -= todo;
while(todo > 0)
{
size_t rem = todo;
if(data->cap_len == 0)
{
pa_stream_state_t state;
state = pa_stream_get_state(data->stream);
if(!PA_STREAM_IS_GOOD(state))
{
aluHandleDisconnect(device);
break;
}
if(pa_stream_peek(data->stream, &data->cap_store, &data->cap_len) < 0)
{
ERR("pa_stream_peek() failed: %s\n",
pa_strerror(pa_context_errno(data->context)));
aluHandleDisconnect(device);
break;
}
data->cap_remain = data->cap_len;
}
if(rem > data->cap_remain)
rem = data->cap_remain;
memcpy(buffer, data->cap_store, rem);
buffer = (ALbyte*)buffer + rem;
todo -= rem;
data->cap_store = (ALbyte*)data->cap_store + rem;
data->cap_remain -= rem;
if(data->cap_remain == 0)
{
pa_stream_drop(data->stream);
data->cap_len = 0;
}
}
if(todo > 0)
memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);
pa_threaded_mainloop_unlock(data->loop);
return ALC_NO_ERROR;
}
static ALCuint qsa_available_samples(ALCdevice* device)
{
qsa_data* data=(qsa_data*)device->ExtraData;
snd_pcm_channel_status_t status;
ALint frame_size=FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
ALint free_size;
int rstatus;
memset(&status, 0, sizeof (status));
status.channel=SND_PCM_CHANNEL_CAPTURE;
snd_pcm_plugin_status(data->pcmHandle, &status);
if ((status.status==SND_PCM_STATUS_OVERRUN) ||
(status.status==SND_PCM_STATUS_READY))
{
if ((rstatus=snd_pcm_plugin_prepare(data->pcmHandle, SND_PCM_CHANNEL_CAPTURE))<0)
{
ERR("capture prepare failed: %s\n", snd_strerror(rstatus));
aluHandleDisconnect(device);
return 0;
}
snd_pcm_capture_go(data->pcmHandle);
return 0;
}
free_size=data->csetup.buf.block.frag_size*data->csetup.buf.block.frags;
free_size-=status.free;
return free_size/frame_size;
}
static ALuint OSSCaptureProc(ALvoid *ptr)
{
ALCdevice *pDevice = (ALCdevice*)ptr;
oss_data *data = (oss_data*)pDevice->ExtraData;
int frameSize;
int amt;
SetRTPriority();
frameSize = FrameSizeFromDevFmt(pDevice->FmtChans, pDevice->FmtType);
while(!data->killNow)
{
amt = read(data->fd, data->mix_data, data->data_size);
if(amt < 0)
{
ERR("read failed: %s\n", strerror(errno));
aluHandleDisconnect(pDevice);
break;
}
if(amt == 0)
{
Sleep(1);
continue;
}
if(data->doCapture)
WriteRingBuffer(data->ring, data->mix_data, amt/frameSize);
}
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;
}
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 void stream_state_callback2(pa_stream *stream, void *pdata) //{{{
{
ALCdevice *Device = pdata;
if(ppa_stream_get_state(stream) == PA_STREAM_FAILED)
{
AL_PRINT("Received stream failure!\n");
aluHandleDisconnect(Device);
}
}//}}}
static void context_state_callback2(pa_context *context, void *pdata) //{{{
{
ALCdevice *Device = pdata;
if(ppa_context_get_state(context) == PA_CONTEXT_FAILED)
{
AL_PRINT("Received context failure!\n");
aluHandleDisconnect(Device);
}
}//}}}
static void DSoundStartCapture(ALCdevice *device)
{
DSoundCaptureData *pData = device->ExtraData;
HRESULT hr;
hr = IDirectSoundCaptureBuffer_Start(pData->DSCbuffer, DSCBSTART_LOOPING);
if(FAILED(hr))
{
ERR("start failed: 0x%08lx\n", hr);
aluHandleDisconnect(device);
}
}
static void context_state_callback2(pa_context *context, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
{
ERR("Received context failure!\n");
aluHandleDisconnect(Device);
}
pa_threaded_mainloop_signal(data->loop, 0);
}//}}}
static void stream_state_callback2(pa_stream *stream, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
{
ERR("Received stream failure!\n");
aluHandleDisconnect(Device);
}
pa_threaded_mainloop_signal(data->loop, 0);
}//}}}
static void DSoundStopCapture(ALCdevice *device)
{
DSoundCaptureData *data = device->ExtraData;
HRESULT hr;
hr = IDirectSoundCaptureBuffer_Stop(data->DSCbuffer);
if(FAILED(hr))
{
ERR("stop failed: 0x%08lx\n", hr);
aluHandleDisconnect(device);
}
}
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;
}
static void alsa_start_capture(ALCdevice *Device)
{
alsa_data *data = (alsa_data*)Device->ExtraData;
int err;
err = snd_pcm_start(data->pcmHandle);
if(err < 0)
{
ERR("start failed: %s\n", snd_strerror(err));
aluHandleDisconnect(Device);
}
else
data->doCapture = AL_TRUE;
}
static ALCuint DSoundAvailableSamples(ALCdevice *pDevice)
{
DSoundCaptureData *pData = pDevice->ExtraData;
DWORD dwRead, dwCursor, dwBufferBytes, dwNumBytes;
void *pvAudio1, *pvAudio2;
DWORD dwAudioBytes1, dwAudioBytes2;
DWORD FrameSize;
HRESULT hr;
if(!pDevice->Connected)
goto done;
FrameSize = FrameSizeFromDevFmt(pDevice->FmtChans, pDevice->FmtType);
dwBufferBytes = pData->dwBufferBytes;
dwCursor = pData->dwCursor;
hr = IDirectSoundCaptureBuffer_GetCurrentPosition(pData->DSCbuffer, NULL, &dwRead);
if(SUCCEEDED(hr))
{
dwNumBytes = (dwBufferBytes + dwRead - dwCursor) % dwBufferBytes;
if(dwNumBytes == 0)
goto done;
hr = IDirectSoundCaptureBuffer_Lock(pData->DSCbuffer,
dwCursor, dwNumBytes,
&pvAudio1, &dwAudioBytes1,
&pvAudio2, &dwAudioBytes2, 0);
}
if(SUCCEEDED(hr))
{
WriteRingBuffer(pData->pRing, pvAudio1, dwAudioBytes1/FrameSize);
if(pvAudio2 != NULL)
WriteRingBuffer(pData->pRing, pvAudio2, dwAudioBytes2/FrameSize);
hr = IDirectSoundCaptureBuffer_Unlock(pData->DSCbuffer,
pvAudio1, dwAudioBytes1,
pvAudio2, dwAudioBytes2);
pData->dwCursor = (dwCursor + dwAudioBytes1 + dwAudioBytes2) % dwBufferBytes;
}
if(FAILED(hr))
{
ERR("update failed: 0x%08lx\n", hr);
aluHandleDisconnect(pDevice);
}
done:
return RingBufferSize(pData->pRing);
}
static ALCuint DSoundAvailableSamples(ALCdevice *Device)
{
DSoundCaptureData *data = Device->ExtraData;
DWORD ReadCursor, LastCursor, BufferBytes, NumBytes;
VOID *ReadPtr1, *ReadPtr2;
DWORD ReadCnt1, ReadCnt2;
DWORD FrameSize;
HRESULT hr;
if(!Device->Connected)
goto done;
FrameSize = FrameSizeFromDevFmt(Device->FmtChans, Device->FmtType);
BufferBytes = data->BufferBytes;
LastCursor = data->Cursor;
hr = IDirectSoundCaptureBuffer_GetCurrentPosition(data->DSCbuffer, NULL, &ReadCursor);
if(SUCCEEDED(hr))
{
NumBytes = (ReadCursor-LastCursor + BufferBytes) % BufferBytes;
if(NumBytes == 0)
goto done;
hr = IDirectSoundCaptureBuffer_Lock(data->DSCbuffer, LastCursor, NumBytes,
&ReadPtr1, &ReadCnt1,
&ReadPtr2, &ReadCnt2, 0);
}
if(SUCCEEDED(hr))
{
WriteRingBuffer(data->Ring, ReadPtr1, ReadCnt1/FrameSize);
if(ReadPtr2 != NULL)
WriteRingBuffer(data->Ring, ReadPtr2, ReadCnt2/FrameSize);
hr = IDirectSoundCaptureBuffer_Unlock(data->DSCbuffer,
ReadPtr1, ReadCnt1,
ReadPtr2, ReadCnt2);
data->Cursor = (LastCursor+ReadCnt1+ReadCnt2) % BufferBytes;
}
if(FAILED(hr))
{
ERR("update failed: 0x%08lx\n", hr);
aluHandleDisconnect(Device);
}
done:
return RingBufferSize(data->Ring);
}
static ALuint ALSANoMMapCaptureProc(ALvoid *ptr)
{
ALCdevice *pDevice = (ALCdevice*)ptr;
alsa_data *data = (alsa_data*)pDevice->ExtraData;
snd_pcm_sframes_t avail;
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 = (snd_pcm_uframes_t)data->size / psnd_pcm_frames_to_bytes(data->pcmHandle, 1);
avail = psnd_pcm_readi(data->pcmHandle, data->buffer, avail);
switch(avail)
{
case -EAGAIN:
continue;
case -ESTRPIPE:
while((avail=psnd_pcm_resume(data->pcmHandle)) == -EAGAIN)
Sleep(1);
break;
case -EPIPE:
break;
default:
if (avail >= 0 && data->doCapture)
WriteRingBuffer(data->ring, data->buffer, avail);
break;
}
if(avail < 0)
{
avail = psnd_pcm_prepare(data->pcmHandle);
if(avail < 0)
AL_PRINT("prepare error: %s\n", psnd_strerror(avail));
}
}
return 0;
}
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 ALCuint pulse_available_samples(ALCdevice *device)
{
pulse_data *data = device->ExtraData;
size_t readable = data->cap_remain;
if(device->Connected)
{
ssize_t got = pa_stream_readable_size(data->stream);
if(got < 0)
{
ERR("pa_stream_readable_size() failed: %s\n", pa_strerror(got));
aluHandleDisconnect(device);
}
else if((size_t)got > data->cap_len)
readable += got - data->cap_len;
}
if(data->last_readable < readable)
data->last_readable = readable;
return data->last_readable / pa_frame_size(&data->spec);
}
static int ALCsolarisBackend_mixerProc(void *ptr)
{
ALCsolarisBackend *self = ptr;
ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
struct timeval timeout;
ALubyte *write_ptr;
ALint frame_size;
ALint to_write;
ssize_t wrote;
fd_set wfds;
int sret;
SetRTPriority();
althrd_setname(althrd_current(), MIXER_THREAD_NAME);
frame_size = FrameSizeFromDevFmt(device->FmtChans, device->FmtType, device->AmbiOrder);
ALCsolarisBackend_lock(self);
while(!ATOMIC_LOAD(&self->killNow, almemory_order_acquire) &&
ATOMIC_LOAD(&device->Connected, almemory_order_acquire) != DeviceConnect_Disconnected)
{
FD_ZERO(&wfds);
FD_SET(self->fd, &wfds);
timeout.tv_sec = 1;
timeout.tv_usec = 0;
ALCsolarisBackend_unlock(self);
sret = select(self->fd+1, NULL, &wfds, NULL, &timeout);
ALCsolarisBackend_lock(self);
if(sret < 0)
{
if(errno == EINTR)
continue;
ERR("select failed: %s\n", strerror(errno));
aluHandleDisconnect(device, "Failed to wait for playback buffer: %s", strerror(errno));
break;
}
else if(sret == 0)
{
WARN("select timeout\n");
continue;
}
write_ptr = self->mix_data;
to_write = self->data_size;
aluMixData(device, write_ptr, to_write/frame_size);
while(to_write > 0 && !ATOMIC_LOAD_SEQ(&self->killNow))
{
wrote = write(self->fd, write_ptr, to_write);
if(wrote < 0)
{
if(errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)
continue;
ERR("write failed: %s\n", strerror(errno));
aluHandleDisconnect(device, "Failed to write playback samples: %s",
strerror(errno));
break;
}
to_write -= wrote;
write_ptr += wrote;
}
}
ALCsolarisBackend_unlock(self);
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 WaveProc(ALvoid *ptr)
{
ALCdevice *Device = (ALCdevice*)ptr;
wave_data *data = (wave_data*)Device->ExtraData;
ALuint frameSize;
ALuint now, start;
ALuint64 avail, done;
size_t fs;
const ALuint restTime = (ALuint64)Device->UpdateSize * 1000 /
Device->Frequency / 2;
frameSize = FrameSizeFromDevFmt(Device->FmtChans, Device->FmtType);
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, data->buffer, Device->UpdateSize);
done += Device->UpdateSize;
if(!IS_LITTLE_ENDIAN)
{
ALuint bytesize = BytesFromDevFmt(Device->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, Device->UpdateSize,
data->f);
fs = fs;
}
if(ferror(data->f))
{
ERR("Error writing to file\n");
ALCdevice_Lock(Device);
aluHandleDisconnect(Device);
ALCdevice_Unlock(Device);
break;
}
}
}
return 0;
}
static int ALCopenslPlayback_mixerProc(void *arg)
{
ALCopenslPlayback *self = arg;
ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
SLAndroidSimpleBufferQueueItf bufferQueue;
ll_ringbuffer_data_t data[2];
SLPlayItf player;
SLresult result;
size_t padding;
SetRTPriority();
althrd_setname(althrd_current(), MIXER_THREAD_NAME);
result = VCALL(self->mBufferQueueObj,GetInterface)(SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
&bufferQueue);
PRINTERR(result, "bufferQueue->GetInterface SL_IID_ANDROIDSIMPLEBUFFERQUEUE");
if(SL_RESULT_SUCCESS == result)
{
result = VCALL(self->mBufferQueueObj,GetInterface)(SL_IID_PLAY, &player);
PRINTERR(result, "bufferQueue->GetInterface SL_IID_PLAY");
}
if(SL_RESULT_SUCCESS != result)
{
ALCopenslPlayback_lock(self);
aluHandleDisconnect(device);
ALCopenslPlayback_unlock(self);
return 1;
}
/* NOTE: The ringbuffer will be larger than the desired buffer metrics.
* Calculate the amount of extra space so we know how much to keep unused.
*/
padding = ll_ringbuffer_write_space(self->mRing) - device->NumUpdates;
ALCopenslPlayback_lock(self);
while(ATOMIC_LOAD_SEQ(&self->mKillNow) == AL_FALSE && device->Connected)
{
size_t todo, len0, len1;
if(ll_ringbuffer_write_space(self->mRing) <= padding)
{
SLuint32 state = 0;
result = VCALL(player,GetPlayState)(&state);
PRINTERR(result, "player->GetPlayState");
if(SL_RESULT_SUCCESS == result && state != SL_PLAYSTATE_PLAYING)
{
result = VCALL(player,SetPlayState)(SL_PLAYSTATE_PLAYING);
PRINTERR(result, "player->SetPlayState");
}
if(SL_RESULT_SUCCESS != result)
{
aluHandleDisconnect(device);
break;
}
/* NOTE: Unfortunately, there is an unavoidable race condition
* here. It's possible for the process() method to run, updating
* the read pointer and signaling the condition variable, in
* between checking the write size and waiting for the condition
* variable here. This will cause alcnd_wait to wait until the
* *next* process() invocation signals the condition variable
* again.
*
* However, this should only happen if the mixer is running behind
* anyway (as ideally we'll be asleep in alcnd_wait by the time the
* process() method is invoked), so this behavior is not completely
* unwarranted. It's unfortunate since it'll be wasting time
* sleeping that could be used to catch up, but there's no way
* around it without blocking in the process() method.
*/
if(ll_ringbuffer_write_space(self->mRing) <= padding)
{
alcnd_wait(&self->mCond, &STATIC_CAST(ALCbackend,self)->mMutex);
continue;
}
}
ll_ringbuffer_get_write_vector(self->mRing, data);
todo = data[0].len+data[1].len - padding;
len0 = minu(todo, data[0].len);
len1 = minu(todo-len0, data[1].len);
aluMixData(device, data[0].buf, len0*device->UpdateSize);
for(size_t i = 0;i < len0;i++)
{
result = VCALL(bufferQueue,Enqueue)(data[0].buf, device->UpdateSize*self->mFrameSize);
PRINTERR(result, "bufferQueue->Enqueue");
if(SL_RESULT_SUCCESS == result)
ll_ringbuffer_write_advance(self->mRing, 1);
data[0].buf += device->UpdateSize*self->mFrameSize;
}
if(len1 > 0)
{
aluMixData(device, data[1].buf, len1*device->UpdateSize);
for(size_t i = 0;i < len1;i++)
{
result = VCALL(bufferQueue,Enqueue)(data[1].buf, device->UpdateSize*self->mFrameSize);
PRINTERR(result, "bufferQueue->Enqueue");
if(SL_RESULT_SUCCESS == result)
ll_ringbuffer_write_advance(self->mRing, 1);
data[1].buf += device->UpdateSize*self->mFrameSize;
}
}
}
ALCopenslPlayback_unlock(self);
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 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 ALCenum qsa_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples)
{
qsa_data* data=(qsa_data*)device->ExtraData;
char* read_ptr;
snd_pcm_channel_status_t status;
fd_set rfds;
int selectret;
struct timeval timeout;
int bytes_read;
ALint frame_size=FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
ALint len=samples*frame_size;
int rstatus;
read_ptr=buffer;
while (len>0)
{
FD_ZERO(&rfds);
FD_SET(data->audio_fd, &rfds);
timeout.tv_sec=2;
timeout.tv_usec=0;
/* Select also works like time slice to OS */
bytes_read=0;
selectret=select(data->audio_fd+1, &rfds, NULL, NULL, &timeout);
switch (selectret)
{
case -1:
aluHandleDisconnect(device);
return ALC_INVALID_DEVICE;
case 0:
break;
default:
if (FD_ISSET(data->audio_fd, &rfds))
{
bytes_read=snd_pcm_plugin_read(data->pcmHandle, read_ptr, len);
break;
}
break;
}
if (bytes_read<=0)
{
if ((errno==EAGAIN) || (errno==EWOULDBLOCK))
{
continue;
}
memset(&status, 0, sizeof (status));
status.channel=SND_PCM_CHANNEL_CAPTURE;
snd_pcm_plugin_status(data->pcmHandle, &status);
/* we need to reinitialize the sound channel if we've overrun the buffer */
if ((status.status==SND_PCM_STATUS_OVERRUN) ||
(status.status==SND_PCM_STATUS_READY))
{
if ((rstatus=snd_pcm_plugin_prepare(data->pcmHandle, SND_PCM_CHANNEL_CAPTURE))<0)
{
ERR("capture prepare failed: %s\n", snd_strerror(rstatus));
aluHandleDisconnect(device);
return ALC_INVALID_DEVICE;
}
snd_pcm_capture_go(data->pcmHandle);
}
}
else
{
read_ptr+=bytes_read;
len-=bytes_read;
}
}
return ALC_NO_ERROR;
}
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;
}
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 ALCenum alsa_capture_samples(ALCdevice *Device, ALCvoid *Buffer, ALCuint Samples)
{
alsa_data *data = (alsa_data*)Device->ExtraData;
if(data->ring)
{
ReadRingBuffer(data->ring, Buffer, Samples);
return ALC_NO_ERROR;
}
data->last_avail -= Samples;
while(Device->Connected && Samples > 0)
{
snd_pcm_sframes_t amt = 0;
if(data->size > 0)
{
/* First get any data stored from the last stop */
amt = snd_pcm_bytes_to_frames(data->pcmHandle, data->size);
if((snd_pcm_uframes_t)amt > Samples) amt = Samples;
amt = snd_pcm_frames_to_bytes(data->pcmHandle, amt);
memmove(Buffer, data->buffer, amt);
if(data->size > amt)
{
memmove(data->buffer, data->buffer+amt, data->size - amt);
data->size -= amt;
}
else
{
free(data->buffer);
data->buffer = NULL;
data->size = 0;
}
amt = snd_pcm_bytes_to_frames(data->pcmHandle, amt);
}
else if(data->doCapture)
amt = snd_pcm_readi(data->pcmHandle, Buffer, Samples);
if(amt < 0)
{
ERR("read error: %s\n", snd_strerror(amt));
if(amt == -EAGAIN)
continue;
if((amt=snd_pcm_recover(data->pcmHandle, amt, 1)) >= 0)
{
amt = snd_pcm_start(data->pcmHandle);
if(amt >= 0)
amt = snd_pcm_avail_update(data->pcmHandle);
}
if(amt < 0)
{
ERR("restore error: %s\n", snd_strerror(amt));
aluHandleDisconnect(Device);
break;
}
/* If the amount available is less than what's asked, we lost it
* during recovery. So just give silence instead. */
if((snd_pcm_uframes_t)amt < Samples)
break;
continue;
}
Buffer = (ALbyte*)Buffer + amt;
Samples -= amt;
}
if(Samples > 0)
memset(Buffer, ((Device->FmtType == DevFmtUByte) ? 0x80 : 0),
snd_pcm_frames_to_bytes(data->pcmHandle, Samples));
return ALC_NO_ERROR;
}
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;
}
