private static void PlayWithoutStreaming(IWaveSource waveSource)
{
using (var xaudio2 = XAudio2.CreateXAudio2())
using (var masteringVoice = xaudio2.CreateMasteringVoice()) //ALWAYS create at least one masteringVoice.
using (var sourceVoice = xaudio2.CreateSourceVoice(waveSource.WaveFormat))
{
var buffer = waveSource.ToByteArray();
using (var sourceBuffer = new XAudio2Buffer(buffer.Length))
{
using (var stream = sourceBuffer.GetStream())
{
stream.Write(buffer, 0, buffer.Length);
}
sourceVoice.SubmitSourceBuffer(sourceBuffer);
}
sourceVoice.Start();
Console.WriteLine("Press any key to exit.");
Console.ReadKey();
sourceVoice.Stop();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="StreamingSourceVoice" /> class.
/// </summary>
/// <param name="ptr">Pointer to a <see cref="XAudio2SourceVoice" /> object.</param>
/// <param name="voiceCallback">
/// <see cref="VoiceCallback" /> instance which receives notifications from the
/// <see cref="XAudio2SourceVoice" /> which got passed as a pointer (see the <paramref name="ptr" /> argument).
/// </param>
/// <param name="waveSource"><see cref="IWaveSource" /> which provides the audio data to stream.</param>
/// <param name="bufferSize">
/// Buffersize of the internal used buffers in milliseconds. Values in the range from 70ms to
/// 200ms are recommended.
/// </param>
/// <remarks>It is recommended to use the <see cref="Create" /> method instead of the this constructor.</remarks>
public StreamingSourceVoice(IntPtr ptr, VoiceCallback voiceCallback, IWaveSource waveSource, int bufferSize)
{
BasePtr = ptr;
_voiceCallback = voiceCallback;
_waveSource = waveSource;
var maxBufferBytes = (int) waveSource.WaveFormat.MillisecondsToBytes(bufferSize);
_buffer = new byte[maxBufferBytes];
for (int i = 0; i < _buffers.Length; i++)
{
var buffer = new XAudio2Buffer(maxBufferBytes);
_buffers[i] = buffer;
}
InitializeForStreaming();
}
internal StreamingSourceVoice(XAudio2 xaudio2, IWaveSource waveSource, VoiceCallback voiceCallback, int bufferSize)
: base(CreateSourceVoice(xaudio2, waveSource, voiceCallback), xaudio2.Version)
{
_voiceCallback = voiceCallback;
_waveSource = waveSource;
var maxBufferBytes = (int)waveSource.WaveFormat.MillisecondsToBytes(bufferSize);
_buffer = new byte[maxBufferBytes];
for (int i = 0; i < _buffers.Length; i++)
{
var buffer = new XAudio2Buffer(maxBufferBytes);
_buffers[i] = buffer;
}
InitializeForStreaming();
}
/// <summary>
/// Initializes a new instance of the <see cref="StreamingSourceVoice" /> class.
/// </summary>
/// <param name="ptr">Pointer to a <see cref="XAudio2SourceVoice" /> object.</param>
/// <param name="voiceCallback">
/// <see cref="VoiceCallback" /> instance which receives notifications from the
/// <see cref="XAudio2SourceVoice" /> which got passed as a pointer (see the <paramref name="ptr" /> argument).
/// </param>
/// <param name="waveSource"><see cref="IWaveSource" /> which provides the audio data to stream.</param>
/// <param name="bufferSize">
/// Buffersize of the internal used buffers in milliseconds. Values in the range from 70ms to
/// 200ms are recommended.
/// </param>
/// <remarks>It is recommended to use the <see cref="Create(XAudio2,IWaveSource,int)" /> method instead of the this constructor.</remarks>
internal StreamingSourceVoice(IntPtr ptr, VoiceCallback voiceCallback, IWaveSource waveSource, int bufferSize)
{
BasePtr = ptr;
_voiceCallback = voiceCallback;
_waveSource = waveSource;
var maxBufferBytes = (int)waveSource.WaveFormat.MillisecondsToBytes(bufferSize);
_buffer = new byte[maxBufferBytes];
for (int i = 0; i < _buffers.Length; i++)
{
var buffer = new XAudio2Buffer(maxBufferBytes);
_buffers[i] = buffer;
}
InitializeForStreaming();
}
internal StreamingSourceVoice(XAudio2 xaudio2, IWaveSource waveSource, VoiceCallback voiceCallback, int bufferSize)
: base(CreateSourceVoice(xaudio2, waveSource, voiceCallback), xaudio2.Version)
{
_voiceCallback = voiceCallback;
_waveSource = waveSource;
var maxBufferBytes = (int)waveSource.WaveFormat.MillisecondsToBytes(bufferSize);
_buffer = new byte[maxBufferBytes];
for (int i = 0; i < _buffers.Length; i++)
{
var buffer = new XAudio2Buffer(maxBufferBytes);
_buffers[i] = buffer;
}
InitializeForStreaming();
}
/// <summary>
/// Notifies the <see cref="StreamingSourceVoice" /> class that new data got requested. If there are any buffers which
/// are currently not queued and the underlying <see cref="IWaveSource" /> holds any more data, this data refills the
/// internal used buffers and provides audio data to play.
/// </summary>
public virtual void Refill()
{
lock (_lockObj) //make sure that nothing gets disposed while anything is still in use.
{
if (_disposed)
{
_waitHandle.Close();
return;
}
int buffersQueued = GetState(GetVoiceStateFlags.NoSamplesPlayed).BuffersQueued;
if (buffersQueued >= MaxBufferCount)
{
return;
}
int read = _waveSource.Read(_buffer, 0, _buffer.Length);
if (read == 0)
{
return;
}
XAudio2Buffer nbuffer = _buffers[_currentBufferIndex];
nbuffer.AudioBytes = read;
//bug: could be critical since some wave sources don't provide length and position
nbuffer.Flags = _waveSource.Position >= _waveSource.Length
? XAudio2BufferFlags.EndOfStream
: XAudio2BufferFlags.None;
using (var stream = nbuffer.GetStream())
{
stream.Write(_buffer, 0, read);
}
Debug.WriteLine(String.Format("Submit: {0};{1}", nbuffer.Flags, nbuffer.AudioBytes));
SubmitSourceBuffer(nbuffer);
_currentBufferIndex++;
_currentBufferIndex %= MaxBufferCount;
}
}
public void CanSubmitSourceBuffer()
{
const int lengthInSeconds = 2;
using (var masteringVoice = _xaudio2.CreateMasteringVoice())
using (var sourceVoice = _xaudio2.CreateSourceVoice(_source.WaveFormat))
{
byte[] rawBuffer = new byte[_source.WaveFormat.BytesPerSecond * lengthInSeconds];
int read = _source.Read(rawBuffer, 0, rawBuffer.Length);
var buffer = new XAudio2Buffer(read);
using (var stream = buffer.GetStream())
{
stream.Write(rawBuffer, 0, read);
}
sourceVoice.SubmitSourceBuffer(buffer);
sourceVoice.Start();
Thread.Sleep(lengthInSeconds * 1000 + 500);
}
}
public void CanRegisterSourceVoiceCallback()
{
const int lengthInSeconds = 2;
bool b0 = false, b1 = false;
var callback = new VoiceCallback();
using (var masteringVoice = _xaudio2.CreateMasteringVoice())
using (var sourceVoice = _xaudio2.CreateSourceVoice(_source.WaveFormat, VoiceFlags.None, CSCore.XAudio2.XAudio2.DefaultFrequencyRatio, callback, null, null))
{
callback.BufferStart += (s,e) => b0 = true;
callback.BufferEnd += (s,e) => b1 = true;
byte[] rawBuffer = new byte[_source.WaveFormat.BytesPerSecond * lengthInSeconds];
int read = _source.Read(rawBuffer, 0, rawBuffer.Length);
var buffer = new XAudio2Buffer(read);
using (var stream = buffer.GetStream())
{
stream.Write(rawBuffer, 0, read);
}
sourceVoice.SubmitSourceBuffer(buffer);
sourceVoice.Start();
Thread.Sleep(lengthInSeconds * 1000 + 2000);
Assert.IsTrue(b0, "No BufferStart.");
Assert.IsTrue(b1, "No BufferEnd.");
}
}
public void CanRegisterEngineCallback()
{
const int lengthInSeconds = 2;
bool b0 = false, b1 = false;
XAudio2EngineCallback engineCallback = new XAudio2EngineCallback();
engineCallback.ProcessingPassStart += (s, e) =>
b0 = true;
engineCallback.ProcessingPassEnd += (s, e) =>
b1 = true;
_xaudio2.RegisterForCallbacks(engineCallback);
using (var masteringVoice = _xaudio2.CreateMasteringVoice())
using (var sourceVoice = _xaudio2.CreateSourceVoice(_source.WaveFormat))
{
byte[] rawBuffer = new byte[_source.WaveFormat.BytesPerSecond * lengthInSeconds];
int read = _source.Read(rawBuffer, 0, rawBuffer.Length);
var buffer = new XAudio2Buffer(read);
using (var stream = buffer.GetStream())
{
stream.Write(rawBuffer, 0, read);
}
sourceVoice.SubmitSourceBuffer(buffer);
sourceVoice.Start();
Thread.Sleep((lengthInSeconds * 1000 + 500) / 2);
Assert.IsTrue(b0 || b1);
Console.WriteLine("Unregistered");
_xaudio2.UnregisterForCallbacks(engineCallback);
b0 = b1 = false;
Thread.Sleep((lengthInSeconds * 1000 + 500) / 4);
Assert.IsFalse(b0 && b1);
Console.WriteLine("Register");
_xaudio2.RegisterForCallbacks(engineCallback);
Thread.Sleep((lengthInSeconds * 1000 + 500) / 4);
Assert.IsTrue(b0 || b1);
}
_xaudio2.UnregisterForCallbacks(engineCallback);
}
/// <summary>
/// Adds a new audio buffer to the voice queue.
/// </summary>
/// <param name="buffer"><see cref="XAudio2Buffer" /> structure to queue.</param>
/// <remarks>
/// See
/// http://msdn.microsoft.com/en-us/library/windows/desktop/microsoft.directx_sdk.ixaudio2sourcevoice.ixaudio2sourcevoice.submitsourcebuffer(v=vs.85).aspx.
/// </remarks>
public unsafe void SubmitSourceBuffer(XAudio2Buffer buffer)
{
XAudio2Exception.Try(SubmitSourceBufferNative(new IntPtr(&buffer), IntPtr.Zero), N, "SubmitSourceBuffer");
}
/// <summary>
/// Adds a new audio buffer to the voice queue.
/// </summary>
/// <param name="buffer"><see cref="XAudio2Buffer" /> structure to queue.</param>
/// <remarks>
/// See
/// http://msdn.microsoft.com/en-us/library/windows/desktop/microsoft.directx_sdk.ixaudio2sourcevoice.ixaudio2sourcevoice.submitsourcebuffer(v=vs.85).aspx.
/// </remarks>
public unsafe void SubmitSourceBuffer(XAudio2Buffer buffer)
{
XAudio2Exception.Try(SubmitSourceBufferNative(new IntPtr(&buffer), IntPtr.Zero), N, "SubmitSourceBuffer");
}
