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/*
* Copyright (C) 2013-2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "MediaSessionManagerInterface.h"
#include "PageIdentifier.h"
#include "Timer.h"
#include <wtf/AggregateLogger.h>
#include <wtf/CancellableTask.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
#include <wtf/WeakHashSet.h>
#include <wtf/WeakListHashSet.h>
namespace WebCore {
class PlatformMediaSession;
struct MediaConfiguration;
struct NowPlayingInfo;
struct NowPlayingMetadata;
class PlatformMediaSessionManager : public MediaSessionManagerInterface
{
WTF_MAKE_TZONE_ALLOCATED(PlatformMediaSessionManager);
public:
static RefPtr<PlatformMediaSessionManager> create(std::optional<PageIdentifier>);
void updateNowPlayingInfoIfNecessary() final;
void updateAudioSessionCategoryIfNecessary() final;
void setShouldDeactivateAudioSession(bool should) final { m_shouldDeactivateAudioSession = should; }
bool shouldDeactivateAudioSession() final { return m_shouldDeactivateAudioSession; }
virtual ~PlatformMediaSessionManager();
void addSession(PlatformMediaSessionInterface&) override;
void removeSession(PlatformMediaSessionInterface&) override;
void setCurrentSession(PlatformMediaSessionInterface&) override;
RefPtr<PlatformMediaSessionInterface> currentSession() const final;
bool activeAudioSessionRequired() const final;
bool hasActiveAudioSession() const final;
bool canProduceAudio() const final;
bool willIgnoreSystemInterruptions() const final { return m_willIgnoreSystemInterruptions; }
void setWillIgnoreSystemInterruptions(bool ignore) final { m_willIgnoreSystemInterruptions = ignore; }
WEBCORE_EXPORT void beginInterruption(PlatformMediaSessionInterruptionType) override;
WEBCORE_EXPORT void endInterruption(PlatformMediaSessionEndInterruptionFlags) final;
WEBCORE_EXPORT void applicationWillBecomeInactive() override;
WEBCORE_EXPORT void applicationDidBecomeActive() override;
WEBCORE_EXPORT void applicationWillEnterForeground(bool) override;
WEBCORE_EXPORT void applicationDidEnterBackground(bool) override;
WEBCORE_EXPORT void processWillSuspend() final;
WEBCORE_EXPORT void processDidResume() final;
bool mediaPlaybackIsPaused(std::optional<MediaSessionGroupIdentifier>) final;
void pauseAllMediaPlaybackForGroup(std::optional<MediaSessionGroupIdentifier>) final;
WEBCORE_EXPORT void stopAllMediaPlaybackForProcess() final;
void suspendAllMediaPlaybackForGroup(std::optional<MediaSessionGroupIdentifier>) final;
void resumeAllMediaPlaybackForGroup(std::optional<MediaSessionGroupIdentifier>) final;
void suspendAllMediaBufferingForGroup(std::optional<MediaSessionGroupIdentifier>) final;
void resumeAllMediaBufferingForGroup(std::optional<MediaSessionGroupIdentifier>) final;
WEBCORE_EXPORT void addRestriction(PlatformMediaSessionMediaType, MediaSessionRestrictions) final;
WEBCORE_EXPORT void removeRestriction(PlatformMediaSessionMediaType, MediaSessionRestrictions) final;
WEBCORE_EXPORT MediaSessionRestrictions restrictions(PlatformMediaSessionMediaType) final;
void resetRestrictions() override;
bool sessionWillBeginPlayback(PlatformMediaSessionInterface&) override;
void sessionWillEndPlayback(PlatformMediaSessionInterface&, DelayCallingUpdateNowPlaying) override;
void sessionStateChanged(PlatformMediaSessionInterface&) override;
void sessionCanProduceAudioChanged() override;
void sessionIsPlayingToWirelessPlaybackTargetChanged(PlatformMediaSessionInterface&) final;
WEBCORE_EXPORT void setIsPlayingToAutomotiveHeadUnit(bool) final;
bool isPlayingToAutomotiveHeadUnit() const final { return m_isPlayingToAutomotiveHeadUnit; }
WEBCORE_EXPORT void setSupportsSpatialAudioPlayback(bool) final;
std::optional<bool> supportsSpatialAudioPlaybackForConfiguration(const MediaConfiguration&) override;
void forEachMatchingSession(NOESCAPE const Function<bool(const PlatformMediaSessionInterface&)>& predicate, NOESCAPE const Function<void(PlatformMediaSessionInterface&)>& matchingCallback);
bool processIsSuspended() const final { return m_processIsSuspended; }
WEBCORE_EXPORT void addAudioCaptureSource(AudioCaptureSource&) final;
WEBCORE_EXPORT void removeAudioCaptureSource(AudioCaptureSource&) final;
void audioCaptureSourceStateChanged() final { updateSessionState(); }
size_t audioCaptureSourceCount() const final { return m_audioCaptureSources.computeSize(); }
WEBCORE_EXPORT void processDidReceiveRemoteControlCommand(PlatformMediaSessionRemoteControlCommandType, const PlatformMediaSessionRemoteCommandArgument&) final;
bool isInterrupted() const final { return !!m_currentInterruption; }
bool hasNoSession() const final;
WEBCORE_EXPORT void processSystemWillSleep() final;
WEBCORE_EXPORT void processSystemDidWake() final;
bool isApplicationInBackground() const final { return m_isApplicationInBackground; }
WeakPtr<PlatformMediaSessionInterface> bestEligibleSessionForRemoteControls(NOESCAPE const Function<bool(const PlatformMediaSessionInterface&)>&, PlatformMediaSessionPlaybackControlsPurpose) final;
std::optional<NowPlayingInfo> nowPlayingInfo() const override;
WEBCORE_EXPORT void addNowPlayingMetadataObserver(const NowPlayingMetadataObserver&) final;
WEBCORE_EXPORT void removeNowPlayingMetadataObserver(const NowPlayingMetadataObserver&) final;
bool hasActiveNowPlayingSessionInGroup(std::optional<MediaSessionGroupIdentifier>) final;
protected:
PlatformMediaSessionManager();
void forEachSession(NOESCAPE const Function<void(PlatformMediaSessionInterface&)>&);
void forEachSessionInGroup(std::optional<MediaSessionGroupIdentifier>, NOESCAPE const Function<void(PlatformMediaSessionInterface&)>&);
bool anyOfSessions(NOESCAPE const Function<bool(const PlatformMediaSessionInterface&)>&) const;
void maybeDeactivateAudioSession();
bool maybeActivateAudioSession();
#if !RELEASE_LOG_DISABLED
const Logger& logger() const final { return m_logger; }
uint64_t logIdentifier() const final { return 0; }
ASCIILiteral logClassName() const override { return "PlatformMediaSessionManager"_s; }
WTFLogChannel& logChannel() const final;
#endif
bool willLog(WTFLogLevel) const;
int countActiveAudioCaptureSources();
bool computeSupportsSeeking() const;
std::optional<bool> supportsSpatialAudioPlayback() { return m_supportsSpatialAudioPlayback; }
void nowPlayingMetadataChanged(const NowPlayingMetadata&);
void enqueueTaskOnMainThread(Function<void()>&&);
private:
friend class Internals;
bool has(PlatformMediaSessionMediaType) const;
int count(PlatformMediaSessionMediaType) const;
void scheduleUpdateSessionState();
virtual void updateSessionState() { }
Vector<WeakPtr<PlatformMediaSessionInterface>> copySessionsToVector() const;
Vector<WeakPtr<PlatformMediaSessionInterface>> sessionsMatching(NOESCAPE const Function<bool(const PlatformMediaSessionInterface&)>&) const;
WeakPtr<PlatformMediaSessionInterface> firstSessionMatching(NOESCAPE const Function<bool(const PlatformMediaSessionInterface&)>&) const;
#if !RELEASE_LOG_DISABLED
void scheduleStateLog();
void dumpSessionStates();
#endif
std::array<MediaSessionRestrictions, static_cast<unsigned>(PlatformMediaSessionMediaType::WebAudio) + 1> m_restrictions;
mutable WeakListHashSet<PlatformMediaSessionInterface> m_sessions;
std::optional<PlatformMediaSessionInterruptionType> m_currentInterruption;
mutable bool m_isApplicationInBackground { false };
bool m_willIgnoreSystemInterruptions { false };
bool m_processIsSuspended { false };
bool m_isPlayingToAutomotiveHeadUnit { false };
std::optional<bool> m_supportsSpatialAudioPlayback;
bool m_alreadyScheduledSessionStatedUpdate { false };
#if USE(AUDIO_SESSION)
bool m_becameActive { false };
#endif
WeakHashSet<AudioCaptureSource> m_audioCaptureSources;
bool m_hasScheduledSessionStateUpdate { false };
bool m_shouldDeactivateAudioSession { false };
WeakHashSet<NowPlayingMetadataObserver> m_nowPlayingMetadataObservers;
TaskCancellationGroup m_taskGroup;
#if !RELEASE_LOG_DISABLED
UniqueRef<Timer> m_stateLogTimer;
const Ref<AggregateLogger> m_logger;
#endif
};
} // namespace WebCore
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