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 | #pragma once |
26 | |
27 | #if ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM) |
28 | |
29 | #include "AudioBasicInspectorNode.h" |
30 | #include "AudioBus.h" |
31 | #include "MediaStream.h" |
32 | |
33 | namespace WebCore { |
34 | |
35 | class AudioContext; |
36 | class MediaStreamAudioSource; |
37 | |
38 | class MediaStreamAudioDestinationNode final : public AudioBasicInspectorNode { |
39 | WTF_MAKE_ISO_ALLOCATED(MediaStreamAudioDestinationNode); |
40 | public: |
41 | static Ref<MediaStreamAudioDestinationNode> create(AudioContext&, size_t numberOfChannels); |
42 | |
43 | virtual ~MediaStreamAudioDestinationNode(); |
44 | |
45 | MediaStream& stream() { return m_stream.get(); } |
46 | |
47 | // AudioNode. |
48 | void process(size_t framesToProcess) final; |
49 | void reset() final; |
50 | |
51 | private: |
52 | MediaStreamAudioDestinationNode(AudioContext&, size_t numberOfChannels); |
53 | |
54 | double tailTime() const final { return 0; } |
55 | double latencyTime() const final { return 0; } |
56 | |
57 | // As an audio source, we will never propagate silence. |
58 | bool propagatesSilence() const final { return false; } |
59 | |
60 | Ref<MediaStreamAudioSource> m_source; |
61 | Ref<MediaStream> m_stream; |
62 | }; |
63 | |
64 | } // namespace WebCore |
65 | |
66 | #endif // ENABLE(WEB_AUDIO) && ENABLE(MEDIA_STREAM) |
67 | |