public Form1()
{
InitializeComponent();
var mainThread = Thread.CurrentThread;
var audioThread = new Thread(() =>
{
var xaDev = new XA.XAudio2();
xaDev.StartEngine();
var wf = new WaveFormat
{
FormatTag = WaveFormatTag.Pcm,
Channels = 2,
BitsPerSample = 16,
BlockAlignment = 4,
SamplesPerSecond = SampleRate,
AverageBytesPerSecond = SampleRate * 4
};
// ReSharper disable once ObjectCreationAsStatement
new XA.MasteringVoice(xaDev, 2, SampleRate, 0);
var xaSv = new XA.SourceVoice(xaDev, wf, XA.VoiceFlags.None);
var xaBuf = new XA.AudioBuffer();
var data = new byte[Samples * 4];
ReadWave(data);
xaBuf.AudioData = new MemoryStream(data, false);
xaBuf.AudioBytes = data.Length;
xaSv.SubmitSourceBuffer(xaBuf);
xaSv.BufferStart += delegate
{
if (!mainThread.IsAlive)
{
return;
}
ReadWave(data);
xaBuf.AudioData.Position = 0;
xaSv.SubmitSourceBuffer(xaBuf);
};
xaSv.Start();
while (mainThread.IsAlive)
{
lock (tones)
{
MidiUpdate();
}
Thread.Sleep(0);
}
xaSv.Stop();
xaSv.Dispose();
xaDev.Dispose();
midi.Dispose();
});
audioThread.Start();
}
private bool FillBuffer(int bufferIdx, IPlayableStream stream)
{
AudioBuffer buffer = this.streamBuffers[bufferIdx];
byte[] byteBuffer = this.byteBuffers[bufferIdx];
bool isDone;
var dataRead = stream.GetWaveData(byteBuffer, StreamingBufferSize);
if (dataRead > 0)
{
streamBuffered += dataRead;
isDone = (streamBuffered >= streamLength);
buffer.Flags = isDone ? BufferFlags.EndOfStream : BufferFlags.None;
buffer.AudioBytes = dataRead;
buffer.Context = (IntPtr)bufferIdx;
sourceVoice.SubmitSourceBuffer(buffer);
bufferStatus.Set(bufferIdx, true);
}
else
{
isDone = true;
}
return(isDone);
}
public void Play(IPlayable wave)
{
lock (mutex)
{
if (wave == current)
{
if (isPaused)
{
sourceVoice.Start();
isPaused = false;
return;
}
}
DisposeWave();
xaudio.CommitChanges();
isPaused = false;
current = wave;
currentStream = wave as IPlayableStream;
if (decodeThread != null)
{
System.Threading.Monitor.Pulse(mutex);
decodeThread = null;
}
if (currentStream == null)
{
sourceVoice = new SourceVoice(xaudio, wave.WaveFormat);
dataStream = new SlimDX.DataStream(wave.WaveData, true, false);
audioBuffer = new SlimDX.XAudio2.AudioBuffer();
audioBuffer.AudioData = dataStream;
audioBuffer.AudioBytes = wave.WaveData.Length;
audioBuffer.Flags = BufferFlags.EndOfStream;
sourceVoice.SubmitSourceBuffer(audioBuffer);
sourceVoice.Start();
}
else
{
streamLength = currentStream.StreamLength;
streamBuffered = 0;
sourceVoice = new SourceVoice(xaudio, wave.WaveFormat);
sourceVoice.BufferEnd += bufferEndCallback;
// Fill buffers initially
bool isDone = false;
for (var i = 0; i < NumStreamingBuffers; i++)
{
isDone = FillBuffer(i, currentStream);
if (isDone)
{
break;
}
}
sourceVoice.Start();
if (!isDone)
{
System.Threading.ParameterizedThreadStart threadProc = DecoderThread;
decodeThread = new System.Threading.Thread(threadProc);
decodeThread.Name = "Vorbis Decoder Thread";
decodeThread.Start(currentStream);
}
}
}
}
public void Play(IPlayable wave)
{
lock (mutex)
{
if (wave == current)
{
if (isPaused)
{
sourceVoice.Start();
isPaused = false;
return;
}
}
DisposeWave();
xaudio.CommitChanges();
isPaused = false;
current = wave;
currentStream = wave as IPlayableStream;
if (decodeThread != null)
{
System.Threading.Monitor.Pulse(mutex);
decodeThread = null;
}
if (currentStream == null)
{
sourceVoice = new SourceVoice(xaudio, wave.WaveFormat);
dataStream = new SlimDX.DataStream(wave.WaveData, true, false);
audioBuffer = new SlimDX.XAudio2.AudioBuffer();
audioBuffer.AudioData = dataStream;
audioBuffer.AudioBytes = wave.WaveData.Length;
audioBuffer.Flags = BufferFlags.EndOfStream;
sourceVoice.SubmitSourceBuffer(audioBuffer);
sourceVoice.Start();
}
else
{
streamLength = currentStream.StreamLength;
streamBuffered = 0;
sourceVoice = new SourceVoice(xaudio, wave.WaveFormat);
sourceVoice.BufferEnd += bufferEndCallback;
// Fill buffers initially
bool isDone = false;
for (var i = 0; i < NumStreamingBuffers; i++)
{
isDone = FillBuffer(i, currentStream);
if (isDone)
{
break;
}
}
sourceVoice.Start();
if (!isDone)
{
System.Threading.ParameterizedThreadStart threadProc = DecoderThread;
decodeThread = new System.Threading.Thread(threadProc);
decodeThread.Name = "Vorbis Decoder Thread";
decodeThread.Start(currentStream);
}
}
}
}