protected virtual bool ReadAndQueueBuffer()
{
// Initially accessed from Main thread, then from Playing thread
//Debug.WriteLine("Get samples from provider");
// Read samples from Provider
_watch.Restart();
bool filled = _sampleProvider.Fill(_buffer);
_watch.Stop();
if (!filled)
{
return(false); // provider failed or wants to stop the engine
}
//Debug.WriteLine("Sample buffer filled in {0} ms. Audio buffer: {1}", _watch.ElapsedMilliseconds, _currentAudioBuffer);
if (_watch.ElapsedMilliseconds >= _bufferLengthMs * 9 / 10)
{
Debug.WriteLine("Warning! Sample buffer filled in {0} ms", _watch.ElapsedMilliseconds);
}
// Get free audio buffer and copy data from sample buffer
SA.AudioBuffer audioBuffer = _audioBuffers[_currentAudioBuffer];
audioBuffer.BufferData(_buffer, _audioFormat);
// Queue audioBuffer to engine source
//Debug.WriteLine("Queue audio buffer");
_source.QueueBuffer(audioBuffer);
// Switch to next audio buffer
_currentAudioBuffer += 1;
_currentAudioBuffer %= _audioBufferCount;
return(true);
}
/// <summary> /// Queries to buffer to the playback queue /// </summary> /// <param name="buffer">the buffer to submit</param> public abstract void QueueBuffer(AudioBuffer buffer);