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