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1 /* | 1 /* |
2 * Copyright (C) 2011, Google Inc. All rights reserved. | 2 * Copyright (C) 2011, 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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26 #define DynamicsCompressorNode_h | 26 #define DynamicsCompressorNode_h |
27 | 27 |
28 #include "modules/webaudio/AudioNode.h" | 28 #include "modules/webaudio/AudioNode.h" |
29 #include "modules/webaudio/AudioParam.h" | 29 #include "modules/webaudio/AudioParam.h" |
30 #include "wtf/OwnPtr.h" | 30 #include "wtf/OwnPtr.h" |
31 | 31 |
32 namespace WebCore { | 32 namespace WebCore { |
33 | 33 |
34 class DynamicsCompressor; | 34 class DynamicsCompressor; |
35 | 35 |
36 class DynamicsCompressorNode : public AudioNode { | 36 class DynamicsCompressorNode FINAL : public AudioNode { |
37 public: | 37 public: |
38 static PassRefPtr<DynamicsCompressorNode> create(AudioContext* context, floa
t sampleRate) | 38 static PassRefPtr<DynamicsCompressorNode> create(AudioContext* context, floa
t sampleRate) |
39 { | 39 { |
40 return adoptRef(new DynamicsCompressorNode(context, sampleRate)); | 40 return adoptRef(new DynamicsCompressorNode(context, sampleRate)); |
41 } | 41 } |
42 | 42 |
43 virtual ~DynamicsCompressorNode(); | 43 virtual ~DynamicsCompressorNode(); |
44 | 44 |
45 // AudioNode | 45 // AudioNode |
46 virtual void process(size_t framesToProcess); | 46 virtual void process(size_t framesToProcess) OVERRIDE; |
47 virtual void reset(); | 47 virtual void reset() OVERRIDE; |
48 virtual void initialize(); | 48 virtual void initialize() OVERRIDE; |
49 virtual void uninitialize(); | 49 virtual void uninitialize() OVERRIDE; |
50 | 50 |
51 // Static compression curve parameters. | 51 // Static compression curve parameters. |
52 AudioParam* threshold() { return m_threshold.get(); } | 52 AudioParam* threshold() { return m_threshold.get(); } |
53 AudioParam* knee() { return m_knee.get(); } | 53 AudioParam* knee() { return m_knee.get(); } |
54 AudioParam* ratio() { return m_ratio.get(); } | 54 AudioParam* ratio() { return m_ratio.get(); } |
55 AudioParam* attack() { return m_attack.get(); } | 55 AudioParam* attack() { return m_attack.get(); } |
56 AudioParam* release() { return m_release.get(); } | 56 AudioParam* release() { return m_release.get(); } |
57 | 57 |
58 // Amount by which the compressor is currently compressing the signal in dec
ibels. | 58 // Amount by which the compressor is currently compressing the signal in dec
ibels. |
59 AudioParam* reduction() { return m_reduction.get(); } | 59 AudioParam* reduction() { return m_reduction.get(); } |
60 | 60 |
61 private: | 61 private: |
62 virtual double tailTime() const OVERRIDE; | 62 virtual double tailTime() const OVERRIDE; |
63 virtual double latencyTime() const OVERRIDE; | 63 virtual double latencyTime() const OVERRIDE; |
64 | 64 |
65 DynamicsCompressorNode(AudioContext*, float sampleRate); | 65 DynamicsCompressorNode(AudioContext*, float sampleRate); |
66 | 66 |
67 OwnPtr<DynamicsCompressor> m_dynamicsCompressor; | 67 OwnPtr<DynamicsCompressor> m_dynamicsCompressor; |
68 RefPtr<AudioParam> m_threshold; | 68 RefPtr<AudioParam> m_threshold; |
69 RefPtr<AudioParam> m_knee; | 69 RefPtr<AudioParam> m_knee; |
70 RefPtr<AudioParam> m_ratio; | 70 RefPtr<AudioParam> m_ratio; |
71 RefPtr<AudioParam> m_reduction; | 71 RefPtr<AudioParam> m_reduction; |
72 RefPtr<AudioParam> m_attack; | 72 RefPtr<AudioParam> m_attack; |
73 RefPtr<AudioParam> m_release; | 73 RefPtr<AudioParam> m_release; |
74 }; | 74 }; |
75 | 75 |
76 } // namespace WebCore | 76 } // namespace WebCore |
77 | 77 |
78 #endif // DynamicsCompressorNode_h | 78 #endif // DynamicsCompressorNode_h |
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