public void Record()
{
IntPtr userdata = IntPtr.Zero; //intptr.zero is essentially just a null pointer
callbackDelegate = new PortAudio.PaStreamCallbackDelegate(myPaStreamCallback);
PortAudio.Pa_Initialize();
PortAudio.PaStreamParameters outputparams = new PortAudio.PaStreamParameters();
outputparams.channelCount = 1;
outputparams.sampleFormat = PortAudio.PaSampleFormat.paInt16;
outputparams.device = PortAudio.Pa_GetDefaultInputDevice();
outputparams.suggestedLatency = PortAudio.Pa_GetDeviceInfo(outputparams.device).defaultLowInputLatency;
outputparams.hostApiSpecificStreamInfo = IntPtr.Zero;
PortAudio.PaStreamParameters a = new PortAudio.PaStreamParameters(); //uninteresting output params cause i cant give it null
a.channelCount = 1;
a.sampleFormat = PortAudio.PaSampleFormat.paInt16;
a.device = PortAudio.Pa_GetDefaultOutputDevice();
a.suggestedLatency = PortAudio.Pa_GetDeviceInfo(a.device).defaultLowOutputLatency;
a.hostApiSpecificStreamInfo = IntPtr.Zero;
PortAudio.PaError error = PortAudio.Pa_OpenStream(out stream, ref outputparams, ref a, this.sampleRate,
(uint)NUM_SAMPLES, PortAudio.PaStreamFlags.paClipOff, callbackDelegate, IntPtr.Zero);
this.isRecording = true;
PortAudio.Pa_StartStream(stream);
Thread myThread = new Thread(new ThreadStart(record_loop));
myThread.Start();
}
private bool errorCheck(String action, PortAudio.PaError errorCode)
{
if (errorCode != PortAudio.PaError.paNoError)
{
CLog.LogError(action + " error: " + PortAudio.Pa_GetErrorText(errorCode));
if (errorCode == PortAudio.PaError.paUnanticipatedHostError)
{
PortAudio.PaHostErrorInfo errorInfo = PortAudio.Pa_GetLastHostErrorInfo();
CLog.LogError("- Host error API type: " + errorInfo.hostApiType);
CLog.LogError("- Host error code: " + errorInfo.errorCode);
CLog.LogError("- Host error text: " + errorInfo.errorText);
}
return(true);
}
return(false);
}
public PortAudio.PaError OpenStream(out IntPtr stream, ref PortAudio.PaStreamParameters?inputParameters, ref PortAudio.PaStreamParameters?outputParameters,
double sampleRate, uint framesPerBuffer, PortAudio.PaStreamFlags streamFlags,
PortAudio.PaStreamCallbackDelegate streamCallback, IntPtr userData)
{
lock (_Mutex)
{
if (_Disposed)
{
throw new ObjectDisposedException("PortAudioHandle already disposed");
}
PortAudio.PaError res = PortAudio.Pa_OpenStream(out stream, ref inputParameters, ref outputParameters, sampleRate, framesPerBuffer, streamFlags, streamCallback,
userData);
if (res == PortAudio.PaError.paNoError)
{
_Streams.Add(stream);
}
return(res);
}
}
public void Play()
{
IntPtr userdata = IntPtr.Zero; //intptr.zero is essentially just a null pointer
callbackDelegate = new PortAudio.PaStreamCallbackDelegate(myPaStreamCallback);
PortAudio.Pa_Initialize();
uint sampleFormat = 0;
switch (bitDepth)
{
case 8:
sampleFormat = 16;
break;
case 16:
sampleFormat = 8;
break;
case 24:
sampleFormat = 4;
break;
case 32:
sampleFormat = 2;
break;
default:
Console.WriteLine("broken WAV");
break;
}
//not sure why framesPerBuffer is so strange.
PortAudio.PaError error = PortAudio.Pa_OpenDefaultStream(out stream, inputChannels, outputChannels, sampleFormat,
sampleRate / outputChannels, (uint)(NUM_SAMPLES / (frameSize * 2)), callbackDelegate, userdata);
PortAudio.Pa_StartStream(stream);
Thread myThread = new Thread(new ThreadStart(play_loop));
myThread.Start();
}
/// <summary>
/// Checks if PA returned an error and logs it
/// Returns true on error
/// </summary>
/// <param name="action">Action identifier (E.g. openStream)</param>
/// <param name="errorCode">Result returned by Pa_* call</param>
/// <returns>True on error</returns>
public bool CheckError(String action, PortAudio.PaError errorCode)
{
if (_Disposed)
{
throw new ObjectDisposedException("PortAudioHandle already disposed");
}
if (errorCode != PortAudio.PaError.paNoError)
{
CLog.LogError(action + " error: " + PortAudio.Pa_GetErrorText(errorCode));
if (errorCode == PortAudio.PaError.paUnanticipatedHostError)
{
PortAudio.PaHostErrorInfo errorInfo = PortAudio.Pa_GetLastHostErrorInfo();
CLog.LogError("- Host error API type: " + errorInfo.hostApiType);
CLog.LogError("- Host error code: " + errorInfo.errorCode);
CLog.LogError("- Host error text: " + errorInfo.errorText);
}
return(true);
}
return(false);
}
