Function newWASAPIContext

driver_wasapi_windows.go:102–133

(sampleRate, channelCount int, mux *mux.Mux, bufferSizeInBytes int)

)

func newWASAPIContext(sampleRate, channelCount int, mux *mux.Mux, bufferSizeInBytes int) (context *wasapiContext, ferr error) {
	t, err := newCOMThread()
	if err != nil {
		return nil, err
	}

	c := &wasapiContext{
		sampleRate:        sampleRate,
		channelCount:      channelCount,
		mux:               mux,
		bufferSizeInBytes: bufferSizeInBytes,
		comThread:         t,
		suspendedCond:     sync.NewCond(&sync.Mutex{}),
	}

	ev, err := windows.CreateEventEx(nil, nil, 0, windows.EVENT_ALL_ACCESS)
	if err != nil {
		return nil, err
	}
	defer func() {
		if ferr != nil {
			windows.CloseHandle(ev)
		}
	}()
	c.sampleReadyEvent = ev

	if err := c.start(); err != nil {
		return nil, err
	}

	return c, nil
}

func (c *wasapiContext) isDeviceSwitched() (bool, error) {
	// If the audio is suspended, do nothing.