/*
For an input- or output-only stream, p.Output.Device or p.Input.Device must be nil, respectively.
The args may consist of either a single StreamCallback or, for a blocking stream, two Buffers or pointers to Buffers. For an input- or output-only stream, one of the Buffer args may be omitted.
*/
func OpenStream(p StreamParameters, args ...interface{}) (*Stream, error) {
if initialized <= 0 {
return nil, NotInitialized
}
s := NewStream()
err := s.init(p, args...)
if err != nil {
return nil, err
}
cb := C.paStreamCallback
if !s.callback.IsValid() {
cb = nil
}
mu.Lock()
id := s.id
idToStream[s.id] = s
mu.Unlock()
paErr := C.Pa_OpenStream(&s.paStream, s.inParams, s.outParams, C.double(p.SampleRate), C.ulong(p.FramesPerBuffer), C.PaStreamFlags(p.Flags), cb, unsafe.Pointer(id))
if paErr != C.paNoError {
return nil, newError(paErr)
}
return s, nil
}
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
}
// OpenStream function as declared in portaudio/portaudio.h:841
func OpenStream(stream **Stream, inputParameters *StreamParameters, outputParameters *StreamParameters, sampleRate float64, framesPerBuffer uint, streamFlags StreamFlags, streamCallback StreamCallback, userData unsafe.Pointer) Error {
cstream, _ := (*unsafe.Pointer)(unsafe.Pointer(stream)), cgoAllocsUnknown
cinputParameters, _ := inputParameters.PassRef()
coutputParameters, _ := outputParameters.PassRef()
csampleRate, _ := (C.double)(sampleRate), cgoAllocsUnknown
cframesPerBuffer, _ := (C.ulong)(framesPerBuffer), cgoAllocsUnknown
cstreamFlags, _ := (C.PaStreamFlags)(streamFlags), cgoAllocsUnknown
cstreamCallback, _ := streamCallback.PassRef()
cuserData, _ := (unsafe.Pointer)(unsafe.Pointer(userData)), cgoAllocsUnknown
__ret := C.Pa_OpenStream(cstream, cinputParameters, coutputParameters, csampleRate, cframesPerBuffer, cstreamFlags, cstreamCallback, cuserData)
__v := (Error)(__ret)
return __v
}
/*
For an input- or output-only stream, p.Output.Device or p.Input.Device must be nil, respectively.
The args may consist of either a single StreamCallback or, for a blocking stream, two Buffers or pointers to Buffers. For an input- or output-only stream, one of the Buffer args may be omitted.
*/
func OpenStream(p StreamParameters, args ...interface{}) (*Stream, error) {
if initialized <= 0 {
return nil, NotInitialized
}
stream_size := (C.size_t)(unsafe.Sizeof(Stream{}))
s := (*Stream)(C.malloc(stream_size))
*s = Stream{}
err := s.init(p, args...)
if err != nil {
return nil, err
}
cb := C.paStreamCallback
if !s.callback.IsValid() {
cb = nil
}
paErr := C.Pa_OpenStream(&s.paStream, s.inParams, s.outParams, C.double(p.SampleRate), C.ulong(p.FramesPerBuffer), C.PaStreamFlags(p.Flags), cb, unsafe.Pointer(s))
if paErr != C.paNoError {
return nil, newError(paErr)
}
return s, nil
}