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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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29 #include "core/dom/DOMTypedArray.h" | 29 #include "core/dom/DOMTypedArray.h" |
30 #include "modules/webaudio/AudioNode.h" | 30 #include "modules/webaudio/AudioNode.h" |
31 #include "platform/audio/AudioDSPKernel.h" | 31 #include "platform/audio/AudioDSPKernel.h" |
32 #include "platform/audio/AudioDSPKernelProcessor.h" | 32 #include "platform/audio/AudioDSPKernelProcessor.h" |
33 #include "wtf/RefPtr.h" | 33 #include "wtf/RefPtr.h" |
34 #include "wtf/ThreadingPrimitives.h" | 34 #include "wtf/ThreadingPrimitives.h" |
35 #include <memory> | 35 #include <memory> |
36 | 36 |
37 namespace blink { | 37 namespace blink { |
38 | 38 |
39 // WaveShaperProcessor is an AudioDSPKernelProcessor which uses WaveShaperDSPKer
nel objects to implement non-linear distortion effects. | 39 // WaveShaperProcessor is an AudioDSPKernelProcessor which uses |
| 40 // WaveShaperDSPKernel objects to implement non-linear distortion effects. |
40 | 41 |
41 class WaveShaperProcessor final : public AudioDSPKernelProcessor { | 42 class WaveShaperProcessor final : public AudioDSPKernelProcessor { |
42 public: | 43 public: |
43 enum OverSampleType { OverSampleNone, OverSample2x, OverSample4x }; | 44 enum OverSampleType { OverSampleNone, OverSample2x, OverSample4x }; |
44 | 45 |
45 WaveShaperProcessor(float sampleRate, size_t numberOfChannels); | 46 WaveShaperProcessor(float sampleRate, size_t numberOfChannels); |
46 | 47 |
47 ~WaveShaperProcessor() override; | 48 ~WaveShaperProcessor() override; |
48 | 49 |
49 std::unique_ptr<AudioDSPKernel> createKernel() override; | 50 std::unique_ptr<AudioDSPKernel> createKernel() override; |
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61 private: | 62 private: |
62 // m_curve represents the non-linear shaping curve. | 63 // m_curve represents the non-linear shaping curve. |
63 std::unique_ptr<Vector<float>> m_curve; | 64 std::unique_ptr<Vector<float>> m_curve; |
64 | 65 |
65 OverSampleType m_oversample; | 66 OverSampleType m_oversample; |
66 }; | 67 }; |
67 | 68 |
68 } // namespace blink | 69 } // namespace blink |
69 | 70 |
70 #endif // WaveShaperProcessor_h | 71 #endif // WaveShaperProcessor_h |
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