/* * Copyright (C) 2013 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 AudioSessionManager_h #define AudioSessionManager_h #if USE(AUDIO_SESSION) #include "AudioSession.h" #include <wtf/HashCountedSet.h> #include <wtf/PassOwnPtr.h> namespace WebCore { class AudioSessionManager { public: static AudioSessionManager& sharedManager(); enum AudioType { None, Video, Audio, WebAudio, }; bool has(AudioType); protected: friend class AudioSessionManagerToken; void incrementCount(AudioType); void decrementCount(AudioType); private: AudioSessionManager(); void updateSessionState(); HashCountedSet<size_t> m_typeCount; }; class AudioSessionManagerToken { public: static PassOwnPtr<AudioSessionManagerToken> create(AudioSessionManager::AudioType); ~AudioSessionManagerToken(); private: AudioSessionManagerToken(AudioSessionManager::AudioType); AudioSessionManager::AudioType m_type; }; } #endif // USE(AUDIO_SESSION) #endif // AudioSessionManager_h