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1 /* | 1 /* |
2 * Copyright (C) 2012, Google Inc. All rights reserved. | 2 * Copyright (C) 2012, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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23 */ | 23 */ |
24 | 24 |
25 #ifndef AudioSummingJunction_h | 25 #ifndef AudioSummingJunction_h |
26 #define AudioSummingJunction_h | 26 #define AudioSummingJunction_h |
27 | 27 |
28 #include "platform/audio/AudioBus.h" | 28 #include "platform/audio/AudioBus.h" |
29 #include "platform/heap/Handle.h" | 29 #include "platform/heap/Handle.h" |
30 #include "wtf/HashSet.h" | 30 #include "wtf/HashSet.h" |
31 #include "wtf/Vector.h" | 31 #include "wtf/Vector.h" |
32 | 32 |
33 namespace WebCore { | 33 namespace blink { |
34 | 34 |
35 class AudioContext; | 35 class AudioContext; |
36 class AudioNodeOutput; | 36 class AudioNodeOutput; |
37 | 37 |
38 // An AudioSummingJunction represents a point where zero, one, or more AudioNode
Outputs connect. | 38 // An AudioSummingJunction represents a point where zero, one, or more AudioNode
Outputs connect. |
39 | 39 |
40 class AudioSummingJunction : public NoBaseWillBeGarbageCollectedFinalized<AudioS
ummingJunction> { | 40 class AudioSummingJunction : public NoBaseWillBeGarbageCollectedFinalized<AudioS
ummingJunction> { |
41 public: | 41 public: |
42 virtual ~AudioSummingJunction(); | 42 virtual ~AudioSummingJunction(); |
43 virtual void trace(Visitor*); | 43 virtual void trace(Visitor*); |
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81 // m_renderingOutputs is a copy of m_outputs which will never be modified du
ring the graph rendering on the audio thread. | 81 // m_renderingOutputs is a copy of m_outputs which will never be modified du
ring the graph rendering on the audio thread. |
82 // This is the list which is used by the rendering code. | 82 // This is the list which is used by the rendering code. |
83 // Whenever m_outputs is modified, the context is told so it can later updat
e m_renderingOutputs from m_outputs at a safe time. | 83 // Whenever m_outputs is modified, the context is told so it can later updat
e m_renderingOutputs from m_outputs at a safe time. |
84 // Most of the time, m_renderingOutputs is identical to m_outputs. | 84 // Most of the time, m_renderingOutputs is identical to m_outputs. |
85 Vector<AudioNodeOutput*> m_renderingOutputs; | 85 Vector<AudioNodeOutput*> m_renderingOutputs; |
86 | 86 |
87 // m_renderingStateNeedUpdating keeps track if m_outputs is modified. | 87 // m_renderingStateNeedUpdating keeps track if m_outputs is modified. |
88 bool m_renderingStateNeedUpdating; | 88 bool m_renderingStateNeedUpdating; |
89 }; | 89 }; |
90 | 90 |
91 } // namespace WebCore | 91 } // namespace blink |
92 | 92 |
93 #endif // AudioSummingJunction_h | 93 #endif // AudioSummingJunction_h |
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