1 /*
2 * Copyright © 2016 Mozilla Foundation
3 *
4 * This program is made available under an ISC-style license. See the
5 * accompanying file LICENSE for details.
6 */
7
8 #include "cubeb_osx_run_loop.h"
9 #include "cubeb_log.h"
10 #include <AudioUnit/AudioUnit.h>
11 #include <CoreAudio/AudioHardware.h>
12 #include <CoreAudio/HostTime.h>
13 #include <CoreFoundation/CoreFoundation.h>
14 #include <cubeb/cubeb.h>
15
16 void
cubeb_set_coreaudio_notification_runloop()17 cubeb_set_coreaudio_notification_runloop()
18 {
19 /* This is needed so that AudioUnit listeners get called on this thread, and
20 * not the main thread. If we don't do that, they are not called, or a crash
21 * occur, depending on the OSX version. */
22 AudioObjectPropertyAddress runloop_address = {
23 kAudioHardwarePropertyRunLoop, kAudioObjectPropertyScopeGlobal,
24 kAudioObjectPropertyElementMaster};
25
26 CFRunLoopRef run_loop = nullptr;
27
28 OSStatus r;
29 r = AudioObjectSetPropertyData(kAudioObjectSystemObject, &runloop_address, 0,
30 NULL, sizeof(CFRunLoopRef), &run_loop);
31 if (r != noErr) {
32 LOG("Could not make global CoreAudio notifications use their own thread.");
33 }
34 }
35