func lolwut() {
runtime.LockOSThread()
var stream unsafe.Pointer
err := C.Pa_OpenDefaultStream(&stream,
0, // no input
1, // mono
C.paFloat32, // 32-bit floating point
48000,
C.paFramesPerBufferUnspecified,
nil,
nil)
if err != C.paNoError {
panic(C.GoString(C.Pa_GetErrorText(err)))
}
err = C.Pa_StartStream(stream)
if err != C.paNoError {
panic(C.GoString(C.Pa_GetErrorText(err)))
}
for {
err := C.Pa_WriteStream(stream, unsafe.Pointer(&genSine(440)[0]), 48000)
if err != C.paNoError {
panic(C.GoString(C.Pa_GetErrorText(err)))
}
}
}
// OpenDefaultStream function as declared in portaudio/portaudio.h:881
func OpenDefaultStream(stream **Stream, numInputChannels int32, numOutputChannels int32, sampleFormat SampleFormat, sampleRate float64, framesPerBuffer uint, streamCallback StreamCallback, userData unsafe.Pointer) Error {
cstream, _ := (*unsafe.Pointer)(unsafe.Pointer(stream)), cgoAllocsUnknown
cnumInputChannels, _ := (C.int)(numInputChannels), cgoAllocsUnknown
cnumOutputChannels, _ := (C.int)(numOutputChannels), cgoAllocsUnknown
csampleFormat, _ := (C.PaSampleFormat)(sampleFormat), cgoAllocsUnknown
csampleRate, _ := (C.double)(sampleRate), cgoAllocsUnknown
cframesPerBuffer, _ := (C.ulong)(framesPerBuffer), cgoAllocsUnknown
cstreamCallback, _ := streamCallback.PassRef()
cuserData, _ := (unsafe.Pointer)(unsafe.Pointer(userData)), cgoAllocsUnknown
__ret := C.Pa_OpenDefaultStream(cstream, cnumInputChannels, cnumOutputChannels, csampleFormat, csampleRate, cframesPerBuffer, cstreamCallback, cuserData)
__v := (Error)(__ret)
return __v
}
/*
Opens the default input and/or output devices.
audioProcessor must have a method
ProcessAudio(in, out [][]SampleType)
or
ProcessAudio(in, out []SampleType)
where SampleType is float32, int32, Int24, int16, int8, or uint8.
In the former case, channels are non-interleaved:
len(in) == numInputChannels, len(out) == numOutputChannels,
and len(in[i]) == len(out[j]) == framesPerBuffer.
In the latter case, channels are interleaved:
len(in) == numInputChannels * framesPerBuffer and len(out) == numOutputChannels * framesPerBuffer.
*/
func OpenDefaultStream(numInputChannels, numOutputChannels int,
sampleRate float64, framesPerBuffer int,
audioProcessor interface{}) (*Stream, error) {
paErr := C.Pa_Initialize()
if paErr != C.paNoError {
return nil, newError(paErr)
}
s := &Stream{}
fmt, err := s.init(audioProcessor, numInputChannels, numOutputChannels)
if err != nil {
return nil, err
}
paErr = C.Pa_OpenDefaultStream(&s.paStream, C.int(numInputChannels), C.int(numOutputChannels), fmt, C.double(sampleRate), C.ulong(framesPerBuffer), C.getPaStreamCallback(), unsafe.Pointer(s))
if paErr != C.paNoError {
return nil, newError(paErr)
}
return s, nil
}