1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* Copyright (C) 2012, 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.
*/
#include "config.h"
#if ENABLE(WEB_AUDIO)
#include "modules/webaudio/MediaStreamAudioDestinationNode.h"
#include "modules/webaudio/AudioContext.h"
#include "modules/webaudio/AudioNodeInput.h"
#include "platform/UUID.h"
#include "platform/mediastream/MediaStreamCenter.h"
#include "public/platform/WebRTCPeerConnectionHandler.h"
#include "wtf/Locker.h"
namespace WebCore {
PassRefPtrWillBeRawPtr<MediaStreamAudioDestinationNode> MediaStreamAudioDestinationNode::create(AudioContext* context, size_t numberOfChannels)
{
return adoptRefWillBeNoop(new MediaStreamAudioDestinationNode(context, numberOfChannels));
}
MediaStreamAudioDestinationNode::MediaStreamAudioDestinationNode(AudioContext* context, size_t numberOfChannels)
: AudioBasicInspectorNode(context, context->sampleRate(), numberOfChannels)
, m_mixBus(AudioBus::create(numberOfChannels, ProcessingSizeInFrames))
{
ScriptWrappable::init(this);
setNodeType(NodeTypeMediaStreamAudioDestination);
m_source = MediaStreamSource::create("WebAudio-" + createCanonicalUUIDString(), MediaStreamSource::TypeAudio, "MediaStreamAudioDestinationNode", MediaStreamSource::ReadyStateLive, true);
MediaStreamSourceVector audioSources;
audioSources.append(m_source);
MediaStreamSourceVector videoSources;
m_stream = MediaStream::create(context->executionContext(), MediaStreamDescriptor::create(audioSources, videoSources));
MediaStreamCenter::instance().didCreateMediaStreamAndTracks(m_stream->descriptor());
m_source->setAudioFormat(numberOfChannels, context->sampleRate());
initialize();
}
MediaStreamAudioDestinationNode::~MediaStreamAudioDestinationNode()
{
uninitialize();
}
void MediaStreamAudioDestinationNode::process(size_t numberOfFrames)
{
m_mixBus->copyFrom(*input(0)->bus());
m_source->consumeAudio(m_mixBus.get(), numberOfFrames);
}
} // namespace WebCore
#endif // ENABLE(WEB_AUDIO)
|
