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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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25 #ifndef BiquadProcessor_h | 25 #ifndef BiquadProcessor_h |
26 #define BiquadProcessor_h | 26 #define BiquadProcessor_h |
27 | 27 |
28 #include "platform/audio/AudioDSPKernel.h" | 28 #include "platform/audio/AudioDSPKernel.h" |
29 #include "platform/audio/AudioDSPKernelProcessor.h" | 29 #include "platform/audio/AudioDSPKernelProcessor.h" |
30 #include "platform/audio/Biquad.h" | 30 #include "platform/audio/Biquad.h" |
31 #include "modules/webaudio/AudioNode.h" | 31 #include "modules/webaudio/AudioNode.h" |
32 #include "modules/webaudio/AudioParam.h" | 32 #include "modules/webaudio/AudioParam.h" |
33 #include "wtf/RefPtr.h" | 33 #include "wtf/RefPtr.h" |
34 | 34 |
35 namespace WebCore { | 35 namespace blink { |
36 | 36 |
37 // BiquadProcessor is an AudioDSPKernelProcessor which uses Biquad objects to im
plement several common filters. | 37 // BiquadProcessor is an AudioDSPKernelProcessor which uses Biquad objects to im
plement several common filters. |
38 | 38 |
39 class BiquadProcessor FINAL : public AudioDSPKernelProcessor { | 39 class BiquadProcessor FINAL : public AudioDSPKernelProcessor { |
40 public: | 40 public: |
41 enum FilterType { | 41 enum FilterType { |
42 LowPass = 0, | 42 LowPass = 0, |
43 HighPass = 1, | 43 HighPass = 1, |
44 BandPass = 2, | 44 BandPass = 2, |
45 LowShelf = 3, | 45 LowShelf = 3, |
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85 RefPtrWillBePersistent<AudioParam> m_parameter3; | 85 RefPtrWillBePersistent<AudioParam> m_parameter3; |
86 RefPtrWillBePersistent<AudioParam> m_parameter4; | 86 RefPtrWillBePersistent<AudioParam> m_parameter4; |
87 | 87 |
88 // so DSP kernels know when to re-compute coefficients | 88 // so DSP kernels know when to re-compute coefficients |
89 bool m_filterCoefficientsDirty; | 89 bool m_filterCoefficientsDirty; |
90 | 90 |
91 // Set to true if any of the filter parameters are sample-accurate. | 91 // Set to true if any of the filter parameters are sample-accurate. |
92 bool m_hasSampleAccurateValues; | 92 bool m_hasSampleAccurateValues; |
93 }; | 93 }; |
94 | 94 |
95 } // namespace WebCore | 95 } // namespace blink |
96 | 96 |
97 #endif // BiquadProcessor_h | 97 #endif // BiquadProcessor_h |
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