public int Play(string path, bool loop, float gain = 1.0f)
{
MusicThreadParameters parameters = new MusicThreadParameters();
parameters.Path = path;
parameters.Loop = loop;
parameters.Gain = gain;
Thread musicPlayer = new Thread(musicThread);
musicPlayer.Start(parameters);
return(musicPlayer.ManagedThreadId);
}
private void musicThread(object param)
{
MusicThreadParameters parameters = (MusicThreadParameters)param;
MusicThreadState musicThreadState = new MusicThreadState();
musicThreadState.Play = true;
musicThreadState.MusicThread = Thread.CurrentThread;
musicStates[Thread.CurrentThread.ManagedThreadId] = musicThreadState;
int[] buffers = AL.GenBuffers(2);
int source = AL.GenSource();
AL.Source(source, ALSourcef.Gain, parameters.Gain);
do
{
VorbisReader vorbis;
lock (sync)
{
vorbis = new VorbisReader(parameters.Path);
}
ALFormat format = (vorbis.Channels == 1) ? ALFormat.Mono16 : ALFormat.Stereo16;
int bufferStride = vorbis.Channels * sizeof(ushort);
int bufferLength = vorbis.Channels * vorbis.SampleRate * bufferCapacityInSeconds;
float[] floatBuffer = new float[bufferLength];
ushort[] pcmBuffer = new ushort[bufferLength];
int samplesRead = vorbis.ReadSamples(floatBuffer, 0, bufferLength);
toPCM(pcmBuffer, floatBuffer);
AL.BufferData(buffers[0], format, pcmBuffer, samplesRead * sizeof(ushort), vorbis.SampleRate);
if (samplesRead > 0)
{
samplesRead = vorbis.ReadSamples(floatBuffer, 0, bufferLength);
toPCM(pcmBuffer, floatBuffer);
AL.BufferData(buffers[1], format, pcmBuffer, samplesRead * sizeof(ushort), vorbis.SampleRate);
AL.SourceQueueBuffers(source, buffers.Length, buffers);
AL.SourcePlay(source);
while ((samplesRead > 0) && musicThreadState.Play)
{
if (AL.GetSourceState(source) != ALSourceState.Playing)
{
AL.SourcePlay(source);
}
int processedBuffers;
AL.GetSource(source, ALGetSourcei.BuffersProcessed, out processedBuffers);
if (processedBuffers > 0)
{
int buffer = AL.SourceUnqueueBuffer(source);
samplesRead = vorbis.ReadSamples(floatBuffer, 0, bufferLength);
toPCM(pcmBuffer, floatBuffer);
AL.BufferData(buffer, format, pcmBuffer, samplesRead * sizeof(ushort), vorbis.SampleRate);
AL.SourceQueueBuffer(source, buffer);
}
else
{
Thread.Sleep(100);
}
}
while ((AL.GetSourceState(source) == ALSourceState.Playing) && musicThreadState.Play)
{
Thread.Sleep(100);
}
AL.Source(source, ALSourcei.Buffer, 0);
}
} while (parameters.Loop && musicThreadState.Play);
AL.DeleteSource(source);
AL.DeleteBuffers(buffers);
musicStates.TryRemove(Thread.CurrentThread.ManagedThreadId, out musicThreadState);
}
