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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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21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | 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. | 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
23 */ | 23 */ |
24 | 24 |
25 #ifndef AudioNodeInput_h | 25 #ifndef AudioNodeInput_h |
26 #define AudioNodeInput_h | 26 #define AudioNodeInput_h |
27 | 27 |
28 #include "modules/webaudio/AudioNode.h" | 28 #include "modules/webaudio/AudioNode.h" |
29 #include "modules/webaudio/AudioSummingJunction.h" | 29 #include "modules/webaudio/AudioSummingJunction.h" |
30 #include "platform/audio/AudioBus.h" | 30 #include "platform/audio/AudioBus.h" |
31 #include "wtf/FastAllocBase.h" | 31 #include "wtf/Allocator.h" |
32 #include "wtf/HashSet.h" | 32 #include "wtf/HashSet.h" |
33 | 33 |
34 namespace blink { | 34 namespace blink { |
35 | 35 |
36 class AudioNodeOutput; | 36 class AudioNodeOutput; |
37 | 37 |
38 // An AudioNodeInput represents an input to an AudioNode and can be connected fr
om one or more AudioNodeOutputs. | 38 // An AudioNodeInput represents an input to an AudioNode and can be connected fr
om one or more AudioNodeOutputs. |
39 // In the case of multiple connections, the input will act as a unity-gain summi
ng junction, mixing all the outputs. | 39 // In the case of multiple connections, the input will act as a unity-gain summi
ng junction, mixing all the outputs. |
40 // The number of channels of the input's bus is the maximum of the number of cha
nnels of all its connections. | 40 // The number of channels of the input's bus is the maximum of the number of cha
nnels of all its connections. |
41 | 41 |
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98 // Called from context's audio thread. | 98 // Called from context's audio thread. |
99 AudioBus* internalSummingBus(); | 99 AudioBus* internalSummingBus(); |
100 void sumAllConnections(AudioBus* summingBus, size_t framesToProcess); | 100 void sumAllConnections(AudioBus* summingBus, size_t framesToProcess); |
101 | 101 |
102 RefPtr<AudioBus> m_internalSummingBus; | 102 RefPtr<AudioBus> m_internalSummingBus; |
103 }; | 103 }; |
104 | 104 |
105 } // namespace blink | 105 } // namespace blink |
106 | 106 |
107 #endif // AudioNodeInput_h | 107 #endif // AudioNodeInput_h |
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