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/*
* Copyright (C) 2012, Google 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 MediaStreamAudioSourceNode_h
#define MediaStreamAudioSourceNode_h
#if ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM)
#include "AudioNode.h"
#include "AudioSourceProvider.h"
#include "AudioSourceProviderClient.h"
#include "MediaStream.h"
#include <wtf/OwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/Threading.h>
namespace WebCore {
class AudioContext;
class MediaStreamAudioSourceNode : public AudioNode, public AudioSourceProviderClient {
public:
static PassRefPtr<MediaStreamAudioSourceNode> create(AudioContext*, MediaStream*, AudioSourceProvider*);
virtual ~MediaStreamAudioSourceNode();
MediaStream* mediaStream() { return m_mediaStream.get(); }
// AudioNode
virtual void process(size_t framesToProcess);
virtual void reset();
// AudioSourceProviderClient
virtual void setFormat(size_t numberOfChannels, float sampleRate);
AudioSourceProvider* audioSourceProvider() const { return m_audioSourceProvider; }
private:
MediaStreamAudioSourceNode(AudioContext*, MediaStream*, AudioSourceProvider*);
virtual double tailTime() const OVERRIDE { return 0; }
virtual double latencyTime() const OVERRIDE { return 0; }
// As an audio source, we will never propagate silence.
virtual bool propagatesSilence() const OVERRIDE { return false; }
RefPtr<MediaStream> m_mediaStream;
AudioSourceProvider* m_audioSourceProvider;
Mutex m_processLock;
unsigned m_sourceNumberOfChannels;
};
} // namespace WebCore
#endif // ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM)
#endif // MediaStreamAudioSourceNode_h
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