/* * 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 FINAL : 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 startRendering() OVERRIDE; virtual float sampleRate() const OVERRIDE { 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