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 "LocalMediaStream.h"
34#include "MediaStreamCenter.h"
35#include "RTCPeerConnectionHandler.h"
36#include "UUID.h"
37#include <wtf/Locker.h>
38
39namespace WebCore {
40
41PassRefPtr<MediaStreamAudioDestinationNode> MediaStreamAudioDestinationNode::create(AudioContext* context, size_t numberOfChannels)
42{
43 return adoptRef(new MediaStreamAudioDestinationNode(context, numberOfChannels));
44}
45
46MediaStreamAudioDestinationNode::MediaStreamAudioDestinationNode(AudioContext* context, size_t numberOfChannels)
47 : AudioBasicInspectorNode(context, context->sampleRate())
48 , m_mixBus(numberOfChannels, ProcessingSizeInFrames)
49{
50 setNodeType(NodeTypeMediaStreamAudioDestination);
51
52 m_source = MediaStreamSource::create(ASCIILiteral("WebAudio-") + createCanonicalUUIDString(), MediaStreamSource::TypeAudio, "MediaStreamAudioDestinationNode", MediaStreamSource::ReadyStateLive, true);
53 MediaStreamSourceVector audioSources;
54 audioSources.append(m_source);
55 MediaStreamSourceVector videoSources;
56 m_stream = LocalMediaStream::create(context->scriptExecutionContext(), audioSources, videoSources);
57 MediaStreamCenter::instance().didCreateMediaStream(m_stream->descriptor());
58
59 initialize();
60}
61
62MediaStreamSource* MediaStreamAudioDestinationNode::mediaStreamSource()
63{
64 return m_source.get();
65}
66
67MediaStreamAudioDestinationNode::~MediaStreamAudioDestinationNode()
68{
69 uninitialize();
70}
71
72void MediaStreamAudioDestinationNode::process(size_t numberOfFrames)
73{
74 m_mixBus.copyFrom(*input(0)->bus());
75 m_source->consumeAudio(&m_mixBus, numberOfFrames);
76}
77
78void MediaStreamAudioDestinationNode::reset()
79{
80}
81
82} // namespace WebCore
83
84#endif // ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM)