public Error OpenDefaultOutputStream(int numOutputChannels, double sampleRate, uint sampleSize, out IBuffer buffer)
{
bps = (int)sampleSize;
PaSampleFormat sampleFormat = bps switch
{
8 => PaSampleFormat.paInt8,
16 => PaSampleFormat.paInt16,
24 => PaSampleFormat.paInt24,
32 => PaSampleFormat.paInt32,
_ => PaSampleFormat.paCustomFormat
};
if (sampleFormat == PaSampleFormat.paCustomFormat)
{
buffer = null;
return(Error.paSampleFormatNotSupported);
}
buffer = outBuffer = new Buffer.Buffer(256 * numOutputChannels * bps / 8);
outBuffer.SetEndOfBuffer(new BufferState {
AbsolutePosition = 256 * numOutputChannels * 20
});
streamCallback = StreamCallback;
channel = numOutputChannels;
outBufferState.AbsolutePosition = 0;
return(Pa_OpenDefaultStream(ref stream, 0, numOutputChannels, sampleFormat, sampleRate, 256, streamCallback, IntPtr.Zero));
}
private static extern int Pa_OpenStream(ref IntPtr stream,
IntPtr inputParameters,
IntPtr outputParameters,
double sampleRate,
ulong framesPerBuffer,
PaStreamFlags streamFlags,
PaStreamCallback streamCallback,
IntPtr userData);
private static extern int Pa_OpenDefaultStream(ref IntPtr stream,
int numInputChannels,
int numOutputChannels,
PaSampleFormat sampleFormat,
double sampleRate,
ulong framesPerBuffer,
PaStreamCallback streamCallback,
IntPtr userData);
unsafe public static extern PaError PA_OpenDefaultStream(
out void *stream,
int numInputChannels,
int numOutputChannels,
PaSampleFormat sampleFormat,
double sampleRate,
uint framesPerBuffer,
PaStreamCallback streamCallback,
int callback_id); // 0 for callback1, else callback2
unsafe public static extern PaError PA_OpenStream(
out void *stream,
PaStreamParameters *inputParameters,
PaStreamParameters *outputParameters,
double sampleRate,
uint framesPerBuffer,
PaStreamFlags streamFlags,
PaStreamCallback streamCallback,
int callback_id); // 0 for callback1, else callback2
public StreamCallbackContainer(
PaStreamCallback callbackProvider,
PaSampleFormat inputSampleFormat, PaSampleFormat outputSampleFormat,
int numInputChannels, int numOutputChannels, object userData)
{
this.callbackProvider = callbackProvider;
this.inputSampleFormat = inputSampleFormat;
this.outputSampleFormat = outputSampleFormat;
this.numInputChannels = numInputChannels;
this.numOutputChannels = numOutputChannels;
this.userData = userData;
}
public PortAudioStream(int rate, int channels, int bufferSize, int numBuffers, GetBufferDataCallback bufferFillCallback)
{
if (refCount == 0)
{
Pa_Initialize();
refCount++;
}
streamCallback = new PaStreamCallback(StreamCallback);
Pa_OpenDefaultStream(out stream, 0, 1, PaSampleFormat.Int16, 44100, 0, streamCallback, IntPtr.Zero);
bufferFill = bufferFillCallback;
}
public PaStream OpenStream(
PaStreamParameters?inputParameters, PaStreamParameters?outputParameters,
double sampleRate, int framesPerBuffer, PaStreamFlags streamFlags,
PaStreamCallback streamCallback, object userData)
{
var streamCallbackContainer = new StreamCallbackContainer(
streamCallback,
inputParameters.HasValue ? inputParameters.Value.sampleFormat : 0,
outputParameters.HasValue ? outputParameters.Value.sampleFormat : 0,
inputParameters.HasValue ? inputParameters.Value.channelCount : 0,
outputParameters.HasValue ? outputParameters.Value.channelCount : 0,
userData);
IntPtr stream;
unsafe
{
PaStreamParameters inputParametersTemp, outputParametersTemp;
IntPtr inputParametersPtr = IntPtr.Zero;
if (inputParameters.HasValue)
{
inputParametersPtr = new IntPtr(&inputParametersTemp);
Marshal.StructureToPtr <PaStreamParameters>(inputParameters.Value, inputParametersPtr, false);
}
IntPtr outputParametersPtr = IntPtr.Zero;
if (outputParameters.HasValue)
{
outputParametersPtr = new IntPtr(&outputParametersTemp);
Marshal.StructureToPtr <PaStreamParameters>(outputParameters.Value, outputParametersPtr, false);
}
PaErrorException.ThrowIfError(Pa_OpenStream(
new IntPtr(&stream),
inputParametersPtr, outputParametersPtr,
sampleRate, (unsigned_long_t)framesPerBuffer, streamFlags,
streamCallbackContainer.Callback, IntPtr.Zero));
}
return(new PaStream(
stream, streamCallbackContainer,
inputParameters.HasValue ? inputParameters.Value.sampleFormat : 0,
outputParameters.HasValue ? outputParameters.Value.sampleFormat : 0,
inputParameters.HasValue ? inputParameters.Value.channelCount : 0,
outputParameters.HasValue ? outputParameters.Value.channelCount : 0));
}
public PaStream OpenDefaultStream(
int numInputChannels, int numOutputChannels, PaSampleFormat sampleFormat,
double sampleRate, int framesPerBuffer, PaStreamFlags streamFlags,
PaStreamCallback streamCallback, object userData)
{
var streamCallbackContainer = new StreamCallbackContainer(
streamCallback,
sampleFormat, sampleFormat,
numInputChannels, numOutputChannels, userData);
IntPtr stream;
unsafe
{
PaErrorException.ThrowIfError(Pa_OpenDefaultStream(
new IntPtr(&stream),
numInputChannels, numOutputChannels, sampleFormat,
sampleRate, (unsigned_long_t)framesPerBuffer, streamFlags,
streamCallbackContainer.Callback, IntPtr.Zero));
}
return(new PaStream(stream, streamCallbackContainer));
}
public static extern int Pa_OpenDefaultStream([Out] IntPtr stream, int numInputChannels, int numOutputChannels,
UInt32 sampleFormat, double sampleRate, UInt32 framesPerBuffer,
PaStreamCallback streamCallback, IntPtr userData);
public static extern int Pa_OpenDefaultStream([Out] IntPtr stream, int numInputChannels, int numOutputChannels,
UInt32 sampleFormat, double sampleRate, UInt32 framesPerBuffer,
PaStreamCallback streamCallback, IntPtr userData);
public static extern int Pa_OpenStream(out IntPtr stream, PaStreamParameters inputParameters, PaStreamParameters outputParameters,
Double sampleRate, UInt32 framesPerBuffer, UInt32 streamFlags,
PaStreamCallback streamCallback, IntPtr userData);
public static extern PaError Pa_OpenDefaultStream(out IntPtr stream, int numInputChannels, int numOutputChannels, PaSampleFormat sampleFormat, double sampleRate, uint framesPerBuffer, PaStreamCallback streamCallback, IntPtr userData);
unsafe public static extern PaError PA_OpenDefaultStream( out void *stream, int numInputChannels, int numOutputChannels, PaSampleFormat sampleFormat, double sampleRate, uint framesPerBuffer, PaStreamCallback streamCallback, int callback_id); // 0 for callback1, else callback2
unsafe public static extern PaError PA_OpenStream ( out void *stream, PaStreamParameters *inputParameters, PaStreamParameters *outputParameters, double sampleRate, uint framesPerBuffer, PaStreamFlags streamFlags, PaStreamCallback streamCallback, int callback_id); // 0 for callback1, else callback2
public static extern int Pa_OpenStream(out IntPtr stream, PaStreamParameters inputParameters, PaStreamParameters outputParameters,
Double sampleRate, UInt32 framesPerBuffer, UInt32 streamFlags,
PaStreamCallback streamCallback, IntPtr userData);
public static unsafe extern PaError PA_OpenStream(
out void* stream,
PaStreamParameters* inputParameters,
PaStreamParameters* outputParameters,
double sampleRate,
uint framesPerBuffer,
PaStreamFlags streamFlags,
PaStreamCallback streamCallback,
int user_data, int callback_id);
PaError Pa_OpenDefaultStream(out IntPtr /*PaStream ** */ stream, int numInputChannels, int numOutputChannels, [MarshalAs(UnmanagedType.SysUInt)] IntPtr /*PaSampleFormat*/ sampleFormat, double sampleRate, [MarshalAs(UnmanagedType.SysUInt)] /*unsigned long*/ IntPtr framesPerBuffer, PaStreamCallback streamCallback, IntPtr /*void **/ userData) ;
PaError Pa_OpenStream(out IntPtr /*PaStream ** */ stream, /*const*/ IntPtr /*PaStreamParameters * */ inputParameters, /*const*/ IntPtr /*PaStreamParameters * */ outputParameters, double sampleRate, [MarshalAs(UnmanagedType.SysUInt)] /*unsigned long*/ uint framesPerBuffer, [MarshalAs(UnmanagedType.SysUInt)] PaStreamFlags streamFlags, PaStreamCallback streamCallback, IntPtr /*void **/ userData) ;
