public static StreamingSourceVoice Create(XAudio2 xaudio2, IWaveSource waveSource, int bufferSize = 100)
{
var voiceCallback = new VoiceCallback();
IntPtr ptr = xaudio2.CreateSourceVoicePtr(waveSource.WaveFormat, VoiceFlags.None,
XAudio2.DefaultFrequencyRatio, voiceCallback,
null, null);
return(new StreamingSourceVoice(ptr, voiceCallback, waveSource, bufferSize));
}
/// <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();
}
private static IntPtr CreateSourceVoice(XAudio2 xaudio2, IWaveSource waveSource, VoiceCallback callback)
{
if (xaudio2 == null)
{
throw new ArgumentNullException("xaudio2");
}
if (waveSource == null)
{
throw new ArgumentNullException("waveSource");
}
return(xaudio2.CreateSourceVoicePtr(waveSource.WaveFormat, VoiceFlags.None,
XAudio2.DefaultFrequencyRatio, callback,
null, null));
}