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/*
* Copyright (C) 2011, 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 OfflineAudioDestinationNode_h
#define OfflineAudioDestinationNode_h
#include "modules/webaudio/AudioBuffer.h"
#include "modules/webaudio/AudioDestinationNode.h"
#include "public/platform/WebThread.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefPtr.h"
namespace WebCore {
class AudioBus;
class AudioContext;
class OfflineAudioDestinationNode : public AudioDestinationNode {
public:
static PassRefPtr<OfflineAudioDestinationNode> create(AudioContext* context, AudioBuffer* renderTarget)
{
return adoptRef(new OfflineAudioDestinationNode(context, renderTarget));
}
virtual ~OfflineAudioDestinationNode();
// AudioNode
virtual void initialize() OVERRIDE;
virtual void uninitialize() OVERRIDE;
// AudioDestinationNode
virtual void enableInput(const String&) OVERRIDE { }
virtual void startRendering() OVERRIDE;
virtual float sampleRate() const { return m_renderTarget->sampleRate(); }
private:
class OfflineRenderingTask;
friend class OfflineRenderingTask;
OfflineAudioDestinationNode(AudioContext*, AudioBuffer* renderTarget);
// This AudioNode renders into this AudioBuffer.
RefPtr<AudioBuffer> m_renderTarget;
// Temporary AudioBus for each render quantum.
RefPtr<AudioBus> m_renderBus;
// Rendering thread.
OwnPtr<blink::WebThread> m_renderThread;
bool m_startedRendering;
void offlineRender();
// For completion callback on main thread.
static void notifyCompleteDispatch(void* userData);
void notifyComplete();
};
} // namespace WebCore
#endif // OfflineAudioDestinationNode_h
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