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/cubeb.h>
9 #include "cubeb_osx_run_loop.h"
10 #include "cubeb_log.h"
11 #include <AudioUnit/AudioUnit.h>
12 #include <CoreAudio/AudioHardware.h>
13 #include <CoreAudio/HostTime.h>
14 #include <CoreFoundation/CoreFoundation.h>
15
cubeb_set_coreaudio_notification_runloop()16 void cubeb_set_coreaudio_notification_runloop()
17 {
18 /* This is needed so that AudioUnit listeners get called on this thread, and
19 * not the main thread. If we don't do that, they are not called, or a crash
20 * occur, depending on the OSX version. */
21 AudioObjectPropertyAddress runloop_address = {
22 kAudioHardwarePropertyRunLoop,
23 kAudioObjectPropertyScopeGlobal,
24 kAudioObjectPropertyElementMaster
25 };
26
27 CFRunLoopRef run_loop = nullptr;
28
29 OSStatus r;
30 r = AudioObjectSetPropertyData(kAudioObjectSystemObject,
31 &runloop_address,
32 0, NULL, sizeof(CFRunLoopRef), &run_loop);
33 if (r != noErr) {
34 LOG("Could not make global CoreAudio notifications use their own thread.");
35 }
36 }
37