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08b87ffa96
Currently we append the new controller first, then clear all controllers when handling audio competing, and finally add the new controller to `mOwningFocusControllers` again. We can handle audio competing first, then adding the new controller, which can avoid adding same controller twice. Differential Revision: https://phabricator.services.mozilla.com/D58735 --HG-- extra : moz-landing-system : lando
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
/* 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 "AudioFocusManager.h"
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#include "MediaControlUtils.h"
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#include "MediaControlService.h"
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#include "mozilla/dom/CanonicalBrowsingContext.h"
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#include "mozilla/Logging.h"
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#include "mozilla/StaticPrefs_media.h"
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#undef LOG
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#define LOG(msg, ...) \
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MOZ_LOG(gMediaControlLog, LogLevel::Debug, \
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("AudioFocusManager=%p, " msg, this, ##__VA_ARGS__))
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namespace mozilla {
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namespace dom {
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void AudioFocusManager::RequestAudioFocus(MediaController* aController) {
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MOZ_ASSERT(aController);
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if (mOwningFocusControllers.Contains(aController)) {
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return;
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}
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ClearFocusControllersIfNeeded();
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LOG("Controller %" PRId64 " grants audio focus", aController->Id());
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mOwningFocusControllers.AppendElement(aController);
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}
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void AudioFocusManager::RevokeAudioFocus(MediaController* aController) {
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MOZ_ASSERT(aController);
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if (!mOwningFocusControllers.Contains(aController)) {
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return;
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}
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LOG("Controller %" PRId64 " loses audio focus", aController->Id());
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mOwningFocusControllers.RemoveElement(aController);
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}
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void AudioFocusManager::ClearFocusControllersIfNeeded() {
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// Enable audio focus management will start the audio competition which is
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// only allowing one controller playing at a time.
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if (!StaticPrefs::media_audioFocus_management()) {
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return;
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}
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for (auto& controller : mOwningFocusControllers) {
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LOG("Controller %" PRId64 " loses audio focus in audio competitition",
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controller->Id());
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controller->Stop();
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}
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mOwningFocusControllers.Clear();
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}
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uint32_t AudioFocusManager::GetAudioFocusNums() const {
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return mOwningFocusControllers.Length();
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}
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} // namespace dom
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} // namespace mozilla
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