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)))
}
}
}
func (strm *Stream) WriteSound(sound []float32) error {
cerr := C.Pa_WriteStream(strm.cee, unsafe.Pointer(&sound[0]),
C.ulong(len(sound)/strm.outopts.ChannelCnt))
if cerr != C.paNoError {
return errors.New(C.GoString(C.Pa_GetErrorText(cerr)))
}
return nil
}
// WriteStream function as declared in portaudio/portaudio.h:1122
func WriteStream(stream *Stream, buffer unsafe.Pointer, frames uint) Error {
cstream, _ := (unsafe.Pointer)(unsafe.Pointer(stream)), cgoAllocsUnknown
cbuffer, _ := (unsafe.Pointer)(unsafe.Pointer(buffer)), cgoAllocsUnknown
cframes, _ := (C.ulong)(frames), cgoAllocsUnknown
__ret := C.Pa_WriteStream(cstream, cbuffer, cframes)
__v := (Error)(__ret)
return __v
}
// Write uses the buffer provided to OpenStream.
// The number of samples to write is determined by the size of the buffer.
func (s *Stream) Write() error {
if s.callback.IsValid() {
return CanNotWriteToACallbackStream
}
if s.out == nil {
return CanNotWriteToAnInputOnlyStream
}
buf, frames, err := getBuffer(s.out, s.outParams)
if err != nil {
return err
}
return newError(C.Pa_WriteStream(s.paStream, buf, C.ulong(frames)))
}