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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 |
| (...skipping 15 matching lines...) Expand all Loading... |
| 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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