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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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23 */ | 23 */ |
24 | 24 |
25 #ifndef WaveShaperDSPKernel_h | 25 #ifndef WaveShaperDSPKernel_h |
26 #define WaveShaperDSPKernel_h | 26 #define WaveShaperDSPKernel_h |
27 | 27 |
28 #include "modules/webaudio/WaveShaperProcessor.h" | 28 #include "modules/webaudio/WaveShaperProcessor.h" |
29 #include "platform/audio/AudioArray.h" | 29 #include "platform/audio/AudioArray.h" |
30 #include "platform/audio/AudioDSPKernel.h" | 30 #include "platform/audio/AudioDSPKernel.h" |
31 #include "platform/audio/DownSampler.h" | 31 #include "platform/audio/DownSampler.h" |
32 #include "platform/audio/UpSampler.h" | 32 #include "platform/audio/UpSampler.h" |
33 #include "wtf/OwnPtr.h" | 33 #include <memory> |
34 | 34 |
35 namespace blink { | 35 namespace blink { |
36 | 36 |
37 class WaveShaperProcessor; | 37 class WaveShaperProcessor; |
38 | 38 |
39 // WaveShaperDSPKernel is an AudioDSPKernel and is responsible for non-linear di
stortion on one channel. | 39 // WaveShaperDSPKernel is an AudioDSPKernel and is responsible for non-linear di
stortion on one channel. |
40 | 40 |
41 class WaveShaperDSPKernel final : public AudioDSPKernel { | 41 class WaveShaperDSPKernel final : public AudioDSPKernel { |
42 public: | 42 public: |
43 explicit WaveShaperDSPKernel(WaveShaperProcessor*); | 43 explicit WaveShaperDSPKernel(WaveShaperProcessor*); |
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55 // Apply the shaping curve. | 55 // Apply the shaping curve. |
56 void processCurve(const float* source, float* dest, size_t framesToProcess); | 56 void processCurve(const float* source, float* dest, size_t framesToProcess); |
57 | 57 |
58 // Use up-sampling, process at the higher sample-rate, then down-sample. | 58 // Use up-sampling, process at the higher sample-rate, then down-sample. |
59 void processCurve2x(const float* source, float* dest, size_t framesToProcess
); | 59 void processCurve2x(const float* source, float* dest, size_t framesToProcess
); |
60 void processCurve4x(const float* source, float* dest, size_t framesToProcess
); | 60 void processCurve4x(const float* source, float* dest, size_t framesToProcess
); |
61 | 61 |
62 WaveShaperProcessor* getWaveShaperProcessor() { return static_cast<WaveShape
rProcessor*>(processor()); } | 62 WaveShaperProcessor* getWaveShaperProcessor() { return static_cast<WaveShape
rProcessor*>(processor()); } |
63 | 63 |
64 // Oversampling. | 64 // Oversampling. |
65 OwnPtr<AudioFloatArray> m_tempBuffer; | 65 std::unique_ptr<AudioFloatArray> m_tempBuffer; |
66 OwnPtr<AudioFloatArray> m_tempBuffer2; | 66 std::unique_ptr<AudioFloatArray> m_tempBuffer2; |
67 OwnPtr<UpSampler> m_upSampler; | 67 std::unique_ptr<UpSampler> m_upSampler; |
68 OwnPtr<DownSampler> m_downSampler; | 68 std::unique_ptr<DownSampler> m_downSampler; |
69 OwnPtr<UpSampler> m_upSampler2; | 69 std::unique_ptr<UpSampler> m_upSampler2; |
70 OwnPtr<DownSampler> m_downSampler2; | 70 std::unique_ptr<DownSampler> m_downSampler2; |
71 }; | 71 }; |
72 | 72 |
73 } // namespace blink | 73 } // namespace blink |
74 | 74 |
75 #endif // WaveShaperDSPKernel_h | 75 #endif // WaveShaperDSPKernel_h |
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