1/* 2 * Copyright (C) 2012, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25#include "config.h" 26 27#if ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM) 28 29#include "MediaStreamAudioDestinationNode.h" 30 31#include "AudioContext.h" 32#include "AudioNodeInput.h" 33#include "MediaStream.h" 34#include "MediaStreamAudioSource.h" 35#include "RTCPeerConnectionHandler.h" 36#include <wtf/Locker.h> 37 38namespace WebCore { 39 40PassRefPtr<MediaStreamAudioDestinationNode> MediaStreamAudioDestinationNode::create(AudioContext* context, size_t numberOfChannels) 41{ 42 return adoptRef(new MediaStreamAudioDestinationNode(context, numberOfChannels)); 43} 44 45MediaStreamAudioDestinationNode::MediaStreamAudioDestinationNode(AudioContext* context, size_t numberOfChannels) 46 : AudioBasicInspectorNode(context, context->sampleRate(), numberOfChannels) 47 , m_mixBus(AudioBus::create(numberOfChannels, ProcessingSizeInFrames)) 48{ 49 setNodeType(NodeTypeMediaStreamAudioDestination); 50 51 m_source = MediaStreamAudioSource::create(); 52 Vector<RefPtr<MediaStreamSource>> audioSources; 53 audioSources.append(m_source); 54 m_stream = MediaStream::create(*context->scriptExecutionContext(), MediaStreamPrivate::create(audioSources, Vector<RefPtr<MediaStreamSource>>())); 55 56 m_source->setAudioFormat(numberOfChannels, context->sampleRate()); 57 58 initialize(); 59} 60 61MediaStreamSource* MediaStreamAudioDestinationNode::mediaStreamSource() 62{ 63 return m_source.get(); 64} 65 66MediaStreamAudioDestinationNode::~MediaStreamAudioDestinationNode() 67{ 68 uninitialize(); 69} 70 71void MediaStreamAudioDestinationNode::process(size_t numberOfFrames) 72{ 73 m_mixBus->copyFrom(*input(0)->bus()); 74 m_source->consumeAudio(m_mixBus.get(), numberOfFrames); 75} 76 77void MediaStreamAudioDestinationNode::reset() 78{ 79} 80 81} // namespace WebCore 82 83#endif // ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM) 84