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/*
* Copyright (C) 2013-2015 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.
*/
#ifndef PlatformMediaSessionManager_h
#define PlatformMediaSessionManager_h
#include "AudioHardwareListener.h"
#include "PlatformMediaSession.h"
#include "RemoteCommandListener.h"
#include "SystemSleepListener.h"
#include <map>
#include <wtf/Vector.h>
namespace WebCore {
class Document;
class HTMLMediaElement;
class PlatformMediaSession;
class RemoteCommandListener;
class PlatformMediaSessionManager : private RemoteCommandListenerClient, private SystemSleepListener::Client, private AudioHardwareListener::Client {
WTF_MAKE_FAST_ALLOCATED;
public:
WEBCORE_EXPORT static PlatformMediaSessionManager* sharedManagerIfExists();
WEBCORE_EXPORT static PlatformMediaSessionManager& sharedManager();
static void updateNowPlayingInfoIfNecessary();
virtual ~PlatformMediaSessionManager() { }
virtual void scheduleUpdateNowPlayingInfo() { }
bool has(PlatformMediaSession::MediaType) const;
int count(PlatformMediaSession::MediaType) const;
bool activeAudioSessionRequired() const;
bool canProduceAudio() const;
WEBCORE_EXPORT virtual bool hasActiveNowPlayingSession() const { return false; }
WEBCORE_EXPORT virtual String lastUpdatedNowPlayingTitle() const { return emptyString(); }
WEBCORE_EXPORT virtual double lastUpdatedNowPlayingDuration() const { return NAN; }
WEBCORE_EXPORT virtual double lastUpdatedNowPlayingElapsedTime() const { return NAN; }
bool willIgnoreSystemInterruptions() const { return m_willIgnoreSystemInterruptions; }
void setWillIgnoreSystemInterruptions(bool ignore) { m_willIgnoreSystemInterruptions = ignore; }
WEBCORE_EXPORT void beginInterruption(PlatformMediaSession::InterruptionType);
WEBCORE_EXPORT void endInterruption(PlatformMediaSession::EndInterruptionFlags);
WEBCORE_EXPORT void applicationWillBecomeInactive() const;
WEBCORE_EXPORT void applicationDidBecomeActive() const;
WEBCORE_EXPORT void applicationWillEnterForeground(bool suspendedUnderLock) const;
WEBCORE_EXPORT void applicationDidEnterBackground(bool suspendedUnderLock) const;
void stopAllMediaPlaybackForDocument(const Document*);
WEBCORE_EXPORT void stopAllMediaPlaybackForProcess();
enum SessionRestrictionFlags {
NoRestrictions = 0,
ConcurrentPlaybackNotPermitted = 1 << 0,
BackgroundProcessPlaybackRestricted = 1 << 1,
BackgroundTabPlaybackRestricted = 1 << 2,
InterruptedPlaybackNotPermitted = 1 << 3,
InactiveProcessPlaybackRestricted = 1 << 4,
SuspendedUnderLockPlaybackRestricted = 1 << 5,
};
typedef unsigned SessionRestrictions;
WEBCORE_EXPORT void addRestriction(PlatformMediaSession::MediaType, SessionRestrictions);
WEBCORE_EXPORT void removeRestriction(PlatformMediaSession::MediaType, SessionRestrictions);
WEBCORE_EXPORT SessionRestrictions restrictions(PlatformMediaSession::MediaType);
virtual void resetRestrictions();
virtual bool sessionWillBeginPlayback(PlatformMediaSession&);
virtual void sessionWillEndPlayback(PlatformMediaSession&);
virtual bool sessionCanLoadMedia(const PlatformMediaSession&) const;
virtual void sessionDidEndRemoteScrubbing(const PlatformMediaSession&) { };
virtual void clientCharacteristicsChanged(PlatformMediaSession&) { }
#if PLATFORM(IOS)
virtual void configureWireLessTargetMonitoring() { }
virtual bool hasWirelessTargetsAvailable() { return false; }
#endif
void setCurrentSession(PlatformMediaSession&);
PlatformMediaSession* currentSession() const;
Vector<PlatformMediaSession*> currentSessionsMatching(const WTF::Function<bool(const PlatformMediaSession&)>&);
void sessionIsPlayingToWirelessPlaybackTargetChanged(PlatformMediaSession&);
void sessionCanProduceAudioChanged(PlatformMediaSession&);
protected:
friend class PlatformMediaSession;
explicit PlatformMediaSessionManager();
void addSession(PlatformMediaSession&);
virtual void removeSession(PlatformMediaSession&);
void forEachSession(const Function<void(PlatformMediaSession&, size_t)>&) const;
PlatformMediaSession* findSession(const Function<bool(PlatformMediaSession&, size_t)>&) const;
bool anyOfSessions(const Function<bool(PlatformMediaSession&, size_t)>& predicate) const { return findSession(predicate); }
private:
friend class Internals;
void updateSessionState();
// RemoteCommandListenerClient
WEBCORE_EXPORT void didReceiveRemoteControlCommand(PlatformMediaSession::RemoteControlCommandType, const PlatformMediaSession::RemoteCommandArgument*) override;
WEBCORE_EXPORT bool supportsSeeking() const override;
// AudioHardwareListenerClient
void audioHardwareDidBecomeActive() override { }
void audioHardwareDidBecomeInactive() override { }
void audioOutputDeviceChanged() override;
// SystemSleepListener
void systemWillSleep() override;
void systemDidWake() override;
SessionRestrictions m_restrictions[PlatformMediaSession::MediaStreamCapturingAudio + 1];
mutable Vector<PlatformMediaSession*> m_sessions;
std::unique_ptr<RemoteCommandListener> m_remoteCommandListener;
std::unique_ptr<SystemSleepListener> m_systemSleepListener;
RefPtr<AudioHardwareListener> m_audioHardwareListener;
#if ENABLE(WIRELESS_PLAYBACK_TARGET) && !PLATFORM(IOS)
RefPtr<MediaPlaybackTarget> m_playbackTarget;
bool m_canPlayToTarget { false };
#endif
bool m_interrupted { false };
mutable bool m_isApplicationInBackground { false };
bool m_willIgnoreSystemInterruptions { false };
mutable int m_iteratingOverSessions { 0 };
};
}
#endif // PlatformMediaSessionManager_h
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