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45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "OSXRunLoopSingleton.h"
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#include <mozilla/StaticMutex.h>
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#include <AudioUnit/AudioUnit.h>
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#include <CoreAudio/AudioHardware.h>
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#include <CoreAudio/HostTime.h>
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#include <CoreFoundation/CoreFoundation.h>
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static bool gRunLoopSet = false;
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static mozilla::StaticMutex gMutex;
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void mozilla_set_coreaudio_notification_runloop_if_needed()
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{
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mozilla::StaticMutexAutoLock lock(gMutex);
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if (gRunLoopSet) {
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return;
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}
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/* This is needed so that AudioUnit listeners get called on this thread, and
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* not the main thread. If we don't do that, they are not called, or a crash
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* occur, depending on the OSX version. */
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AudioObjectPropertyAddress runloop_address = {
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kAudioHardwarePropertyRunLoop,
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kAudioObjectPropertyScopeGlobal,
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kAudioObjectPropertyElementMaster
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};
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CFRunLoopRef run_loop = nullptr;
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OSStatus r;
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r = AudioObjectSetPropertyData(kAudioObjectSystemObject,
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&runloop_address,
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0, NULL, sizeof(CFRunLoopRef), &run_loop);
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if (r != noErr) {
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NS_WARNING("Could not make global CoreAudio notifications use their own thread.");
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}
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gRunLoopSet = true;
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}
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