Function newWinMMContext

driver_winmm_windows.go:93–113

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

var theWinMMContext *winmmContext

func newWinMMContext(sampleRate, channelCount int, mux *mux.Mux, bufferSizeInBytes int) (*winmmContext, error) {
	// winmm.dll is not available on Xbox.
	if err := winmm.Load(); err != nil {
		return nil, fmt.Errorf("oto: loading winmm.dll failed: %w", err)
	}

	c := &winmmContext{
		sampleRate:        sampleRate,
		channelCount:      channelCount,
		bufferSizeInBytes: bufferSizeInBytes,
		mux:               mux,
		cond:              sync.NewCond(&sync.Mutex{}),
		suspendedCond:     sync.NewCond(&sync.Mutex{}),
	}
	theWinMMContext = c

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

func (c *winmmContext) start() error {
	const bitsPerSample = 32