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"
#include "MediaStreamAudioDestinationNode.h"
#if ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM)
#include "AudioContext.h"
#include "AudioNodeInput.h"
#include "Document.h"
#include "MediaStream.h"
#include "MediaStreamAudioSource.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/Locker.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(MediaStreamAudioDestinationNode);
ExceptionOr<Ref<MediaStreamAudioDestinationNode>> MediaStreamAudioDestinationNode::create(BaseAudioContext& context, const AudioNodeOptions& options)
{
// This behavior is not part of the specification. This is done for consistency with Blink.
if (context.isStopped() || !context.scriptExecutionContext())
return Exception { NotAllowedError, "Cannot create a MediaStreamAudioDestinationNode in a detached frame"_s };
auto node = adoptRef(*new MediaStreamAudioDestinationNode(context));
auto result = node->handleAudioNodeOptions(options, { 2, ChannelCountMode::Explicit, ChannelInterpretation::Speakers });
if (result.hasException())
return result.releaseException();
return node;
}
MediaStreamAudioDestinationNode::MediaStreamAudioDestinationNode(BaseAudioContext& context)
: AudioBasicInspectorNode(context, NodeTypeMediaStreamAudioDestination)
, m_source(MediaStreamAudioSource::create(context.sampleRate()))
, m_stream(MediaStream::create(*context.document(), MediaStreamPrivate::create(context.document()->logger(), m_source.copyRef())))
{
initialize();
}
MediaStreamAudioDestinationNode::~MediaStreamAudioDestinationNode()
{
uninitialize();
}
void MediaStreamAudioDestinationNode::process(size_t numberOfFrames)
{
m_source->consumeAudio(*input(0)->bus(), numberOfFrames);
}
} // namespace WebCore
#endif // ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM)
|
