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/*
* Copyright (C) 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. ``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
* 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
#if ENABLE(MEDIA_SESSION)
#include "MediaSessionInterruptionProvider.h"
#include <wtf/HashSet.h>
namespace WebCore {
class MediaSession;
class MediaSessionManager : public MediaSessionInterruptionProviderClient {
friend class NeverDestroyed<MediaSessionManager>;
public:
WEBCORE_EXPORT static MediaSessionManager& singleton();
WEBCORE_EXPORT void togglePlayback();
WEBCORE_EXPORT void skipToNextTrack();
WEBCORE_EXPORT void skipToPreviousTrack();
WEBCORE_EXPORT void didReceiveStartOfInterruptionNotification(MediaSessionInterruptingCategory) override;
WEBCORE_EXPORT void didReceiveEndOfInterruptionNotification(MediaSessionInterruptingCategory) override;
private:
friend class MediaSession;
MediaSessionManager();
bool hasActiveMediaElements() const;
void addMediaSession(MediaSession&);
void removeMediaSession(MediaSession&);
RefPtr<MediaSessionInterruptionProvider> m_interruptionProvider;
HashSet<MediaSession*> m_sessions;
};
} // namespace WebCore
#endif // ENABLE(MEDIA_SESSION)