public void Dispose()
{
var state = AL.GetSourceState(alSourceId);
if (state == ALSourceState.Playing || state == ALSourceState.Paused)
{
StopPlayback();
}
lock (prepareMutex)
{
OggStreamer.Instance.RemoveStream(this);
if (state != ALSourceState.Initial)
{
Empty();
}
Close();
underlyingStream.Dispose();
}
AL.DeleteSource(alSourceId);
AL.DeleteBuffers(alBufferIds);
if (ALHelper.Efx.IsInitialized)
{
ALHelper.Efx.DeleteFilter(alFilterId);
}
ALHelper.Check();
Logger.Log(LogEventSingle.MemoryUsage, () => GC.GetTotalMemory(true));
}
void Empty()
{
int queued;
AL.GetSource(alSourceId, ALGetSourcei.BuffersQueued, out queued);
if (queued > 0)
{
try
{
AL.SourceUnqueueBuffers(alSourceId, queued);
ALHelper.Check();
}
catch (InvalidOperationException)
{
// This is a bug in the OpenAL implementation
// Salvage what we can
int processed;
AL.GetSource(alSourceId, ALGetSourcei.BuffersProcessed, out processed);
var salvaged = new int[processed];
if (processed > 0)
{
AL.SourceUnqueueBuffers(alSourceId, processed, salvaged);
ALHelper.Check();
}
// Try turning it off again?
AL.SourceStop(alSourceId);
ALHelper.Check();
Empty();
}
}
Logger.Log(LogEvent.Empty, this);
}
public void Resume()
{
if (AL.GetSourceState(alSourceId) != ALSourceState.Paused)
{
return;
}
OggStreamer.Instance.AddStream(this);
Logger.Log(LogEvent.Resume, this);
AL.SourcePlay(alSourceId);
ALHelper.Check();
}
public void Pause()
{
if (AL.GetSourceState(alSourceId) != ALSourceState.Playing)
{
return;
}
OggStreamer.Instance.RemoveStream(this);
Logger.Log(LogEvent.Pause, this);
AL.SourcePause(alSourceId);
ALHelper.Check();
}
public void Play()
{
var state = AL.GetSourceState(alSourceId);
switch (state)
{
case ALSourceState.Playing: return;
case ALSourceState.Paused:
Resume();
return;
}
Prepare();
Logger.Log(LogEvent.Play, this);
AL.SourcePlay(alSourceId);
ALHelper.Check();
Preparing = false;
OggStreamer.Instance.AddStream(this);
}
void StopPlayback()
{
AL.SourceStop(alSourceId);
ALHelper.Check();
}
public void EnsureBuffersFilled()
{
do
{
threadLocalStreams.Clear();
lock (iterationMutex) threadLocalStreams.AddRange(streams);
foreach (var stream in threadLocalStreams)
{
lock (stream.prepareMutex)
{
lock (iterationMutex)
if (!streams.Contains(stream))
{
continue;
}
bool finished = false;
int queued;
AL.GetSource(stream.alSourceId, ALGetSourcei.BuffersQueued, out queued);
ALHelper.Check();
int processed;
AL.GetSource(stream.alSourceId, ALGetSourcei.BuffersProcessed, out processed);
ALHelper.Check();
if (processed == 0 && queued == stream.BufferCount)
{
continue;
}
int[] tempBuffers;
if (processed > 0)
{
tempBuffers = AL.SourceUnqueueBuffers(stream.alSourceId, processed);
}
else
{
tempBuffers = stream.alBufferIds.Skip(queued).ToArray();
}
int bufIdx = 0;
for (; bufIdx < tempBuffers.Length; bufIdx++)
{
finished |= FillBuffer(stream, tempBuffers[bufIdx]);
if (finished)
{
if (stream.IsLooped)
{
stream.Reader.DecodedTime = TimeSpan.Zero;
if (bufIdx == 0)
{
// we didn't have any buffers left over, so let's start from the beginning on the next cycle...
continue;
}
}
else
{
lock (stream.stopMutex)
{
stream.NotifyFinished();
}
streams.Remove(stream);
break;
}
}
}
AL.SourceQueueBuffers(stream.alSourceId, bufIdx, tempBuffers);
ALHelper.Check();
if (finished && !stream.IsLooped)
{
continue;
}
}
lock (stream.stopMutex)
{
if (stream.Preparing)
{
continue;
}
lock (iterationMutex)
if (!streams.Contains(stream))
{
continue;
}
var state = AL.GetSourceState(stream.alSourceId);
if (state == ALSourceState.Stopped)
{
Logger.Log(LogEvent.BufferUnderrun, stream);
AL.SourcePlay(stream.alSourceId);
ALHelper.Check();
}
}
}
if (UpdateRate > 0)
{
Thread.Sleep((int)(1000 / UpdateRate));
}
}while (underlyingThread != null && !cancelled);
}