public unsafe WaveDuplex(int deviceIndex, double sampleRate, int framesPerBuffer, AudioBufferAvailableDelegate bufferNeededDelegate)
{
this._bufferAvailable = bufferNeededDelegate;
PaStreamParameters paStreamParameters = new PaStreamParameters
{
device = deviceIndex,
channelCount = 2,
suggestedLatency = 0.0,
sampleFormat = PaSampleFormat.PaFloat32
};
PaError paError = PortAudioAPI.Pa_IsFormatSupported(ref paStreamParameters, ref paStreamParameters, sampleRate);
if (paError != 0)
{
throw new ApplicationException(paError.ToString());
}
this._gcHandle = GCHandle.Alloc(this);
paError = PortAudioAPI.Pa_OpenStream(out this._streamHandle, ref paStreamParameters, ref paStreamParameters, sampleRate, (uint)framesPerBuffer, PaStreamFlags.PaNoFlag, this._paCallback, (IntPtr)this._gcHandle);
if (paError != 0)
{
this._gcHandle.Free();
throw new ApplicationException(paError.ToString());
}
paError = PortAudioAPI.Pa_StartStream(this._streamHandle);
if (paError == PaError.paNoError)
{
return;
}
PortAudioAPI.Pa_CloseStream(this._streamHandle);
this._gcHandle.Free();
throw new ApplicationException(paError.ToString());
}
public unsafe WavePlayer(int deviceIndex, double sampleRate, int framesPerBuffer, AudioBufferNeededDelegate bufferNeededDelegate)
{
Console.WriteLine("WavePlayer started, samplerate=" + sampleRate.ToString() + ", frameCount=" + framesPerBuffer.ToString());
this._bufferNeeded = bufferNeededDelegate;
PaStreamParameters paStreamParameters = new PaStreamParameters
{
device = deviceIndex,
channelCount = 2,
suggestedLatency = 0.0,
sampleFormat = PaSampleFormat.PaFloat32
};
PaError paError = PortAudioAPI.Pa_IsFormatSupported(IntPtr.Zero, ref paStreamParameters, sampleRate);
if (paError != 0)
{
throw new ApplicationException("Init audio output device: " + paError.ToString());
}
this._gcHandle = GCHandle.Alloc(this);
paError = PortAudioAPI.Pa_OpenStream(out this._streamHandle, IntPtr.Zero, ref paStreamParameters, sampleRate, (uint)framesPerBuffer, PaStreamFlags.PaNoFlag, this._paCallback, (IntPtr)this._gcHandle);
if (paError != 0)
{
this._gcHandle.Free();
throw new ApplicationException("Open audio output device: " + paError.ToString());
}
paError = PortAudioAPI.Pa_StartStream(this._streamHandle);
if (paError == PaError.paNoError)
{
return;
}
PortAudioAPI.Pa_CloseStream(this._streamHandle);
this._gcHandle.Free();
throw new ApplicationException("Start audio output device: " + paError.ToString());
}
public AudioPlayer(int deviceIndex, double sampleRate, uint framesPerBuffer, SamplesAvailableEvent samplesAvailableCallback)
{
_bufferNeeded = samplesAvailableCallback;
PaStreamParameters ouputParams = new PaStreamParameters();
ouputParams.device = deviceIndex;
ouputParams.channelCount = 2;
ouputParams.suggestedLatency = 0;
ouputParams.sampleFormat = PaSampleFormat.paFloat32;
PaError paErr = Pa_IsFormatSupported(IntPtr.Zero, ref ouputParams, sampleRate);
if (paErr != PaError.paNoError)
{
throw new ApplicationException(paErr.ToString());
}
_gcHandle = GCHandle.Alloc(this);
paErr = Pa_OpenStream(out _streamHandle, IntPtr.Zero, ref ouputParams, sampleRate, framesPerBuffer, PaStreamFlags.paNoFlag, _paCallback, (IntPtr)_gcHandle);
if (paErr != PaError.paNoError)
{
_gcHandle.Free();
throw new ApplicationException(paErr.ToString());
}
paErr = Pa_StartStream(_streamHandle);
if (paErr != PaError.paNoError)
{
Pa_CloseStream(_streamHandle);
_gcHandle.Free();
throw new ApplicationException(paErr.ToString());
}
}