/* * Copyright (C) 2010, 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 "AudioNode.h" #include <memory> #include <wtf/RefCounted.h> #include <wtf/Threading.h> namespace WebCore { class AudioBus; class AudioNodeInput; class AudioProcessor; // AudioBasicProcessorNode is an AudioNode with one input and one output where the input and output have the same number of channels. class AudioBasicProcessorNode : public AudioNode { public: AudioBasicProcessorNode(AudioContext&, float sampleRate); // AudioNode void process(size_t framesToProcess) override; void pullInputs(size_t framesToProcess) override; void reset() override; void initialize() override; void uninitialize() override; // Called in the main thread when the number of channels for the input may have changed. void checkNumberOfChannelsForInput(AudioNodeInput*) override; // Returns the number of channels for both the input and the output. unsigned numberOfChannels(); protected: double tailTime() const override; double latencyTime() const override; AudioProcessor* processor() { return m_processor.get(); } std::unique_ptr<AudioProcessor> m_processor; }; } // namespace WebCore