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 OpenStream(inOpts *InputOptions,
outOpts *OutputOptions,
sampleRate float64) (strm *Stream, err error) {
// initialize return value first
strm = new(Stream)
strm.inopts = inOpts
strm.outopts = outOpts
// initialize in and out
var _inopts *C.PaStreamParameters
var _outopts *C.PaStreamParameters
if inOpts != nil {
_inopts = new(C.PaStreamParameters)
_inopts.device = C.Pa_GetDefaultInputDevice()
if inOpts.DeviceID != DefaultDevice {
_inopts.device = C.PaDeviceIndex(inOpts.DeviceID)
}
_inopts.channelCount = C.int(inOpts.ChannelCnt)
_inopts.sampleFormat = C.paFloat32
_inopts.suggestedLatency = C.Pa_GetDeviceInfo(_inopts.device).defaultHighInputLatency
_inopts.hostApiSpecificStreamInfo = nil
}
if outOpts != nil {
_outopts = new(C.PaStreamParameters)
_outopts.device = C.Pa_GetDefaultOutputDevice()
if outOpts.DeviceID != DefaultDevice {
_outopts.device = C.PaDeviceIndex(outOpts.DeviceID)
}
_outopts.channelCount = C.int(outOpts.ChannelCnt)
_outopts.sampleFormat = C.paFloat32
_outopts.suggestedLatency = C.Pa_GetDeviceInfo(_outopts.device).defaultHighOutputLatency
_outopts.hostApiSpecificStreamInfo = nil
}
cerr := C.Pa_OpenStream(
&strm.cee,
_inopts,
_outopts,
C.double(sampleRate),
C.paClipOff,
0,
nil,
nil,
)
if cerr != C.paNoError {
err = errors.New(C.GoString(C.Pa_GetErrorText(cerr)))
return
}
cerr = C.Pa_StartStream(strm.cee)
if cerr != C.paNoError {
err = errors.New(C.GoString(C.Pa_GetErrorText(cerr)))
return
}
return
}
func (strm *Stream) ReadSound(sound []float32) error {
cerr := C.Pa_ReadStream(strm.cee, unsafe.Pointer(&sound[0]),
C.ulong(len(sound)/strm.inopts.ChannelCnt))
if cerr != C.paNoError {
return errors.New(C.GoString(C.Pa_GetErrorText(cerr)))
}
return nil
}
func (err Error) Error() string {
return C.GoString(C.Pa_GetErrorText(C.PaError(err)))
}
func Initialize() {
err := C.Pa_Initialize()
if err != C.paNoError {
panic(C.Pa_GetErrorText(err))
}
}
func fatalPAError(err C.PaError) {
log.Fatal(C.GoString(C.Pa_GetErrorText(err)))
}
func newError(err C.PaError) error {
return errors.New(C.GoString(C.Pa_GetErrorText(err)))
}
// GetErrorText function as declared in portaudio/portaudio.h:110
func GetErrorText(errorCode Error) string {
cerrorCode, _ := (C.PaError)(errorCode), cgoAllocsUnknown
__ret := C.Pa_GetErrorText(cerrorCode)
__v := packPCharString(__ret)
return __v
}