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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
#include "AudioFocusManager.h"
#include "MediaController.h"
#include "MediaControlUtils.h"
#include "MediaControlService.h"
#include "mozilla/dom/CanonicalBrowsingContext.h"
#include "mozilla/Logging.h"
#include "mozilla/StaticPrefs_media.h"
#include "nsThreadUtils.h"
#undef LOG
#define LOG(msg, ...) \
MOZ_LOG(gMediaControlLog, LogLevel::Debug, \
("AudioFocusManager=%p, " msg, this, ##__VA_ARGS__))
namespace mozilla::dom {
void AudioFocusManager::RequestAudioFocus(IMediaController* aController) {
MOZ_ASSERT(aController);
if (mOwningFocusControllers.Contains(aController)) {
return;
}
ClearFocusControllersIfNeeded();
LOG("Controller %" PRId64 " grants audio focus", aController->Id());
mOwningFocusControllers.AppendElement(aController);
}
void AudioFocusManager::RevokeAudioFocus(IMediaController* aController) {
MOZ_ASSERT(aController);
if (!mOwningFocusControllers.Contains(aController)) {
return;
}
LOG("Controller %" PRId64 " loses audio focus", aController->Id());
mOwningFocusControllers.RemoveElement(aController);
}
void AudioFocusManager::ClearFocusControllersIfNeeded() {
// Enable audio focus management will start the audio competition which is
// only allowing one controller playing at a time.
if (!StaticPrefs::media_audioFocus_management()) {
return;
}
for (auto& controller : mOwningFocusControllers) {
LOG("Controller %" PRId64 " loses audio focus in audio competitition",
controller->Id());
controller->Stop();
}
mOwningFocusControllers.Clear();
}
uint32_t AudioFocusManager::GetAudioFocusNums() const {
return mOwningFocusControllers.Length();
}
} // namespace mozilla::dom