| 1 | #include "Python.h"
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| 2 | #include <AudioToolbox/AudioServices.h>
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| 3 |
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| 4 | static PyObject
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| 5 | *AudioDevice_default_output_device_is_airplay(PyObject *self, PyObject *args) {
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| 6 | AudioObjectPropertyAddress propertyAddress;
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| 7 | propertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
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| 8 | propertyAddress.mElement = kAudioObjectPropertyElementMaster;
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| 9 | propertyAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
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| 10 |
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| 11 | AudioDeviceID deviceID = kAudioDeviceUnknown;
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| 12 | UInt32 size = sizeof(deviceID);
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| 13 | OSStatus err;
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| 14 |
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| 15 | err = AudioHardwareServiceGetPropertyData(kAudioObjectSystemObject,
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| 16 | &propertyAddress, 0, NULL,
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| 17 | &size, &deviceID);
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| 18 | if (err != noErr)
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| 19 | return PyErr_Format(PyExc_OSError,
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| 20 | "AudioHardwareServiceGetPropertyData failed (%ld)",
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| 21 | (long)err);
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| 22 |
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| 23 | if (deviceID == kAudioDeviceUnknown)
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| 24 | Py_RETURN_NONE;
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| 25 |
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| 26 | UInt32 transportType;
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| 27 | propertyAddress.mSelector = kAudioDevicePropertyTransportType,
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| 28 | err = AudioObjectGetPropertyData(deviceID,
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| 29 | &propertyAddress, 0, NULL,
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| 30 | &size, &transportType);
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| 31 | if (err != noErr)
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| 32 | return PyErr_Format(PyExc_OSError,
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| 33 | "AudioObjectGetPropertyData failed (%ld)",
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| 34 | (long)err);
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| 35 |
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| 36 | if (transportType == kAudioDeviceTransportTypeAirPlay)
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| 37 | Py_RETURN_TRUE;
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| 38 | else
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| 39 | Py_RETURN_FALSE;
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| 40 | }
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| 41 |
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| 42 | // XXX device changed notifications:
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| 43 | // http://stackoverflow.com/questions/9674666/
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| 44 |
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| 45 | static PyMethodDef AudioDevicemodule_methods[] = {
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| 46 | {"default_output_device_is_airplay",
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| 47 | AudioDevice_default_output_device_is_airplay, METH_NOARGS,
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| 48 | "default_output_device() -> bool or None\n\n"
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| 49 | "Return whether the default CoreAudio output device is an AirPlay device."},
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| 50 | {NULL, NULL, 0, NULL}
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| 51 | };
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| 52 |
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| 53 | PyMODINIT_FUNC
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| 54 | initAudioDevice(void) {
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| 55 | (void)Py_InitModule("AudioDevice", AudioDevicemodule_methods);
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| 56 | }
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