bool
AlsaSource::WriteRW ()
{
snd_pcm_sframes_t avail;
snd_pcm_sframes_t commitres = 0;
guint32 frames;
void *buffer;
if (GetState () != AudioPlaying) {
LOG_ALSA ("AlsaSource::WriteRW (): trying to write when we're not playing (state: %i)\n", GetState ());
return false;
}
if (!PreparePcm (&avail))
return false;
LOG_ALSA ("AlsaSource::WriteRW (): entering play loop, avail: %" G_GINT64_FORMAT ", sample size: %i\n", (gint64) avail, (int) period_size);
buffer = g_malloc (avail * GetOutputBytesPerFrame ());
frames = Write (buffer, (guint32) avail);
mutex.Lock ();
if (initialized)
commitres = snd_pcm_writei (pcm, buffer, frames);
mutex.Unlock ();
g_free (buffer);
LOG_ALSA ("AlsaSource::WriteRW (): played %i samples, of %i available samples, result: %i.\n", (int) frames, (int) avail, (int) commitres);
if (commitres < 0 || (snd_pcm_uframes_t) commitres != frames) {
if (commitres == -EAGAIN)
LOG_AUDIO ("AlsaSource::WriteRW (): not enough space for all the data\n");
if (!XrunRecovery (commitres >= 0 ? -EPIPE : commitres)) {
LOG_AUDIO ("AudioPlayer: could not write audio data: %s, commitres: %li, frames: %u\n", snd_strerror (commitres), commitres, frames);
return false;
}
started = false;
}
return frames != 0;
}
void
OpenSLESSource::NextBuffer ()
{
LOG_OSL ("OpenSLESSource::PlayBuffer");
// FIXME: allocate new buffer (or get it from a free list or something..)
SLresult result;
SLAndroidSimpleBufferQueueState bufferQueueState;
result = (*playerBufferQueue)->GetState (playerBufferQueue, &bufferQueueState);
CHECK_RESULT ("playerBufferQueue->GetState");
void *pBuffer = buffers[(bufferQueueState.index+1) % NUM_BUFFERS_IN_QUEUE];
int bufferSize = BUFFER_SIZE;
Write (pBuffer, bufferSize / GetOutputBytesPerFrame ());
result = (*playerBufferQueue)->Enqueue(playerBufferQueue, pBuffer, bufferSize);
CHECK_RESULT("playerBufferQueue->Enqueue");
}
