Function deviceCandidates

driver_unix.go:54–107

()

}

func deviceCandidates() []string {
	const getAllDevices = -1

	cPCMInterfaceName := C.CString("pcm")
	defer C.free(unsafe.Pointer(cPCMInterfaceName))

	var hints *unsafe.Pointer
	err := C.snd_device_name_hint(getAllDevices, cPCMInterfaceName, &hints)
	if err != 0 {
		return []string{"default", "plug:default"}
	}
	defer C.snd_device_name_free_hint(hints)

	var devices []string

	cIoHintName := C.CString("IOID")
	defer C.free(unsafe.Pointer(cIoHintName))
	cNameHintName := C.CString("NAME")
	defer C.free(unsafe.Pointer(cNameHintName))

	for it := hints; *it != nil; it = (*unsafe.Pointer)(unsafe.Pointer(uintptr(unsafe.Pointer(it)) + unsafe.Sizeof(uintptr(0)))) {
		io := C.snd_device_name_get_hint(*it, cIoHintName)
		defer func() {
			if io != nil {
				C.free(unsafe.Pointer(io))
			}
		}()
		if C.GoString(io) == "Input" {
			continue
		}

		name := C.snd_device_name_get_hint(*it, cNameHintName)
		defer func() {
			if name != nil {
				C.free(unsafe.Pointer(name))
			}
		}()
		if name == nil {
			continue
		}
		goName := C.GoString(name)
		if goName == "null" {
			continue
		}
		if goName == "default" {
			continue
		}
		devices = append(devices, goName)
	}

	devices = append([]string{"default", "plug:default"}, devices...)

	return devices
}

func newContext(sampleRate int, channelCount int, format mux.Format, bufferSizeInBytes int) (*context, chan struct{}, error) {
	c := &context{