public void SetStreamFinishedCallback(StreamFinishedCallback streamFinishedCallback)
{
HandleError(PortAudioInterop.Pa_SetStreamFinishedCallback(
handle,
userData => streamFinishedCallback(userData)
));
}
public static int GetSampleSize(PaSampleFormat format)
{
var ret = PortAudioInterop.Pa_GetSampleSize(format);
HandleError((PaErrorCode)ret);
return(ret);
}
internal static void ThrowLastError()
{
var ret = PortAudioInterop.Pa_GetLastHostErrorInfo();
var ei = Factory.Create <PaHostErrorInfo> (new CppInstancePtr(ret));
if (ei.errorCode < 0)
{
throw new PortAudioException(ei);
}
}
// "The function doesn't return until the entire buffer has been filled - this may involve waiting for the operating system to supply the data." (!)
public void Write(byte[] buffer, int offset, uint frames)
{
unsafe {
fixed(byte *buf = buffer)
HandleError(PortAudioInterop.Pa_WriteStream(
handle,
(IntPtr)(buf + offset),
frames
));
}
}
public void Close()
{
if (handle != IntPtr.Zero)
{
if (should_dispose_handle)
{
HandleError(PortAudioInterop.Pa_CloseStream(handle));
}
handle = IntPtr.Zero;
}
}
public static PaDeviceInfo GetDeviceInfo(int deviceIndex)
{
var ptr = PortAudioInterop.Pa_GetDeviceInfo(deviceIndex);
if (ptr == IntPtr.Zero)
{
ThrowLastError();
}
using (var cppptr = new CppInstancePtr(ptr))
return(Factory.Create <PaDeviceInfo> (cppptr));
}
public static PaHostApiInfo GetHostApiInfo(int hostApi)
{
var ptr = PortAudioInterop.Pa_GetHostApiInfo(hostApi);
if (ptr == IntPtr.Zero)
{
ThrowLastError();
}
using (var cppptr = new CppInstancePtr(ptr))
return(Factory.Create <PaHostApiInfo> (cppptr));
}
public PortAudioInputStream(int numInputChannels, PaSampleFormat sampleFormat, double sampleRate, uint framesPerBuffer, StreamCallback streamCallback, IntPtr userData)
: base(sampleFormat, numInputChannels)
{
HandleError(PortAudioInterop.Pa_OpenDefaultStream(
out handle,
numInputChannels,
0,
(IntPtr)sampleFormat,
sampleRate,
(IntPtr)framesPerBuffer,
ToPaStreamCallback(streamCallback, false),
userData
));
}
public PortAudioInputStream(PaStreamParameters inputParameters, double sampleRate, uint framesPerBuffer, PaStreamFlags streamFlags, StreamCallback streamCallback, IntPtr userData)
: base(inputParameters.sampleFormat, inputParameters.channelCount)
{
using (var input = Factory.ToNative <PaStreamParameters> (inputParameters))
HandleError(PortAudioInterop.Pa_OpenStream(
out handle,
input.Native,
IntPtr.Zero,
sampleRate,
framesPerBuffer,
streamFlags,
ToPaStreamCallback(streamCallback, false),
userData
));
}
public PortAudioOutputStream(int numOutputChannels, PaSampleFormat sampleFormat, double sampleRate, uint framesPerBuffer, StreamCallback streamCallback, object userData)
: base(sampleFormat, numOutputChannels)
{
var gch = userData == null ? default(GCHandle) : GCHandle.Alloc(userData, GCHandleType.Pinned);
try {
HandleError(PortAudioInterop.Pa_OpenDefaultStream(
out handle,
0,
numOutputChannels,
(IntPtr)sampleFormat,
sampleRate,
(IntPtr)framesPerBuffer,
ToPaStreamCallback(streamCallback, true),
userData != null ? gch.AddrOfPinnedObject() : IntPtr.Zero));
} finally {
if (userData != null)
{
gch.Free();
}
}
}
public PortAudioOutputStream(PaStreamParameters outputParameters, double sampleRate, uint framesPerBuffer, PaStreamFlags streamFlags, StreamCallback streamCallback, object userData)
: base(outputParameters.sampleFormat, outputParameters.channelCount)
{
var gch = userData == null ? default(GCHandle) : GCHandle.Alloc(userData, GCHandleType.Pinned);
try {
using (var output = Factory.ToNative <PaStreamParameters> (outputParameters))
HandleError(PortAudioInterop.Pa_OpenStream(
out handle,
IntPtr.Zero,
output.Native,
sampleRate,
framesPerBuffer,
streamFlags,
ToPaStreamCallback(streamCallback, true),
userData != null ? gch.AddrOfPinnedObject() : IntPtr.Zero));
} finally {
if (userData != null)
{
gch.Free();
}
}
}
public static PaErrorCode CheckIfFormatSupported(PaStreamParameters inputParameters, PaStreamParameters outputParameters, double sampleRate)
{
using (var input = Factory.ToNative <PaStreamParameters> (inputParameters))
using (var output = Factory.ToNative <PaStreamParameters> (outputParameters))
return(PortAudioInterop.Pa_IsFormatSupported(input.Native, output.Native, sampleRate));
}
public static PaHostErrorInfo GetLastHostErrorInfo()
{
using (var cppptr = new CppInstancePtr(PortAudioInterop.Pa_GetLastHostErrorInfo()))
return(Factory.Create <PaHostErrorInfo> (cppptr));
}
public static int HostApiDeviceIndexToDeviceIndex(int hostApi, int hostApiDeviceIndex)
{
return(PortAudioInterop.Pa_HostApiDeviceIndexToDeviceIndex(hostApi, hostApiDeviceIndex));
}
public static int HostApiTypeIdToHostApiIndex(PaHostApiTypeId type)
{
return(PortAudioInterop.Pa_HostApiTypeIdToHostApiIndex(type));
}
public static string GetErrorText(PaErrorCode errorCode)
{
return(Marshal.PtrToStringAuto(PortAudioInterop.Pa_GetErrorText(errorCode)));
}
public void StopStream()
{
HandleError(PortAudioInterop.Pa_StopStream(handle));
}
public void AbortStream()
{
HandleError(PortAudioInterop.Pa_AbortStream(handle));
}