blob: b945bef91f7cdebada521ed059ebec4cc425b5be [file] [log] [blame]
/*
* 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.
*/
#pragma once
#include "AudioBuffer.h"
#include "AudioDestinationNode.h"
#include <wtf/RefPtr.h>
#include <wtf/Threading.h>
namespace WebCore {
class AudioBus;
class AudioContext;
class OfflineAudioDestinationNode : public AudioDestinationNode {
public:
static Ref<OfflineAudioDestinationNode> create(AudioContext& context, AudioBuffer* renderTarget)
{
return adoptRef(*new OfflineAudioDestinationNode(context, renderTarget));
}
virtual ~OfflineAudioDestinationNode();
// AudioNode
void initialize() override;
void uninitialize() override;
// AudioDestinationNode
void enableInput(const String&) override { }
void startRendering() override;
float sampleRate() const override { return m_renderTarget->sampleRate(); }
private:
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.
RefPtr<Thread> m_renderThread;
bool m_startedRendering;
void offlineRender();
// For completion callback on main thread.
void notifyComplete();
};
} // namespace WebCore