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1 /* | 1 /* |
2 * Copyright (C) 2010, Google Inc. All rights reserved. | 2 * Copyright (C) 2010, 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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24 | 24 |
25 #ifndef AudioNodeInput_h | 25 #ifndef AudioNodeInput_h |
26 #define AudioNodeInput_h | 26 #define AudioNodeInput_h |
27 | 27 |
28 #include "platform/audio/AudioBus.h" | 28 #include "platform/audio/AudioBus.h" |
29 #include "modules/webaudio/AudioNode.h" | 29 #include "modules/webaudio/AudioNode.h" |
30 #include "modules/webaudio/AudioSummingJunction.h" | 30 #include "modules/webaudio/AudioSummingJunction.h" |
31 #include "wtf/HashSet.h" | 31 #include "wtf/HashSet.h" |
32 #include "wtf/Vector.h" | 32 #include "wtf/Vector.h" |
33 | 33 |
34 namespace WebCore { | 34 namespace blink { |
35 | 35 |
36 class AudioNode; | 36 class AudioNode; |
37 class AudioNodeOutput; | 37 class AudioNodeOutput; |
38 | 38 |
39 // An AudioNodeInput represents an input to an AudioNode and can be connected fr
om one or more AudioNodeOutputs. | 39 // An AudioNodeInput represents an input to an AudioNode and can be connected fr
om one or more AudioNodeOutputs. |
40 // In the case of multiple connections, the input will act as a unity-gain summi
ng junction, mixing all the outputs. | 40 // In the case of multiple connections, the input will act as a unity-gain summi
ng junction, mixing all the outputs. |
41 // The number of channels of the input's bus is the maximum of the number of cha
nnels of all its connections. | 41 // The number of channels of the input's bus is the maximum of the number of cha
nnels of all its connections. |
42 | 42 |
43 class AudioNodeInput FINAL : public AudioSummingJunction { | 43 class AudioNodeInput FINAL : public AudioSummingJunction { |
44 public: | 44 public: |
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90 // Generally, these represent disabled connections from "notes" which have f
inished playing but are not yet garbage collected. | 90 // Generally, these represent disabled connections from "notes" which have f
inished playing but are not yet garbage collected. |
91 HashSet<AudioNodeOutput*> m_disabledOutputs; | 91 HashSet<AudioNodeOutput*> m_disabledOutputs; |
92 | 92 |
93 // Called from context's audio thread. | 93 // Called from context's audio thread. |
94 AudioBus* internalSummingBus(); | 94 AudioBus* internalSummingBus(); |
95 void sumAllConnections(AudioBus* summingBus, size_t framesToProcess); | 95 void sumAllConnections(AudioBus* summingBus, size_t framesToProcess); |
96 | 96 |
97 RefPtr<AudioBus> m_internalSummingBus; | 97 RefPtr<AudioBus> m_internalSummingBus; |
98 }; | 98 }; |
99 | 99 |
100 } // namespace WebCore | 100 } // namespace blink |
101 | 101 |
102 #endif // AudioNodeInput_h | 102 #endif // AudioNodeInput_h |
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