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/*
* 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 AudioSession_h
#define AudioSession_h
#if USE(AUDIO_SESSION)
#include <wtf/HashSet.h>
#include <wtf/OwnPtr.h>
namespace WebCore {
class AudioSessionListener;
class AudioSessionPrivate;
class AudioSession {
WTF_MAKE_NONCOPYABLE(AudioSession);
public:
static AudioSession& sharedSession();
enum CategoryType {
None,
AmbientSound,
SoloAmbientSound,
MediaPlayback,
RecordAudio,
PlayAndRecord,
AudioProcessing,
};
void setCategory(CategoryType);
CategoryType category() const;
void setCategoryOverride(CategoryType);
CategoryType categoryOverride() const;
void addListener(AudioSessionListener*);
void removeListener(AudioSessionListener*);
float sampleRate() const;
size_t numberOfOutputChannels() const;
void setActive(bool);
size_t preferredBufferSize() const;
void setPreferredBufferSize(size_t);
void beganAudioInterruption();
void endedAudioInterruption();
private:
AudioSession();
~AudioSession();
OwnPtr<AudioSessionPrivate> m_private;
HashSet<AudioSessionListener*> m_listeners;
};
}
#endif // USE(AUDIO_SESSION)
#endif // AudioSession_h
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