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Add support for setting default input device #20

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Add support for setting default input device #20

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30 changes: 30 additions & 0 deletions ext/coreaudio/coreaudio.m
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Original file line number Diff line number Diff line change
Expand Up @@ -444,6 +444,35 @@
return Qtrue;
}


/*
* Document-method: CoreAudio.set_default_input_device
* call-seq:
* CoreAudio.set_default_input_device(audio_device)
*
* Set system default audio input device as CoreAudio::AudioDevice object.
*/
static VALUE
ca_set_default_input_device(VALUE self, VALUE device)
{
AudioDeviceID devID = NUM2UINT(rb_ivar_get(device, sym_iv_devid));
AudioObjectPropertyAddress address = PropertyAddress;
UInt32 size;
OSStatus status;

address.mSelector = kAudioHardwarePropertyDefaultInputDevice;
address.mScope = kAudioObjectPropertyScopeGlobal;
address.mElement = kAudioObjectPropertyElementMaster;

status = AudioObjectSetPropertyData(kAudioObjectSystemObject, &address, 0, NULL, sizeof(devID), &devID);
if (status != noErr) {
rb_raise(rb_eArgError,
"coreaudio: set default input device failed: %d", status);
}

return Qtrue;
}

/*
* Document-class: CoreAudio::OutLoop
*
Expand Down Expand Up @@ -1159,6 +1188,7 @@
rb_define_singleton_method(rb_mCoreAudio, "default_input_device", ca_default_input_device, -1);
rb_define_singleton_method(rb_mCoreAudio, "default_output_device", ca_default_output_device, -1);
rb_define_singleton_method(rb_mCoreAudio, "set_default_output_device", ca_set_default_output_device, 1);
rb_define_singleton_method(rb_mCoreAudio, "set_default_input_device", ca_set_default_input_device, 1);

rb_define_method(rb_cOutLoop, "[]=", ca_out_loop_data_assign, 2);
rb_define_method(rb_cOutLoop, "start", ca_out_loop_data_start, 0);
Expand Down