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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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46 HighShelf = 4, | 46 HighShelf = 4, |
47 Peaking = 5, | 47 Peaking = 5, |
48 Notch = 6, | 48 Notch = 6, |
49 Allpass = 7 | 49 Allpass = 7 |
50 }; | 50 }; |
51 | 51 |
52 BiquadProcessor(AudioContext*, float sampleRate, size_t numberOfChannels, bo
ol autoInitialize); | 52 BiquadProcessor(AudioContext*, float sampleRate, size_t numberOfChannels, bo
ol autoInitialize); |
53 | 53 |
54 virtual ~BiquadProcessor(); | 54 virtual ~BiquadProcessor(); |
55 | 55 |
56 virtual PassOwnPtr<AudioDSPKernel> createKernel(); | 56 virtual PassOwnPtr<AudioDSPKernel> createKernel() OVERRIDE; |
57 | 57 |
58 virtual void process(const AudioBus* source, AudioBus* destination, size_t f
ramesToProcess) OVERRIDE; | 58 virtual void process(const AudioBus* source, AudioBus* destination, size_t f
ramesToProcess) OVERRIDE; |
59 | 59 |
60 // Get the magnitude and phase response of the filter at the given | 60 // Get the magnitude and phase response of the filter at the given |
61 // set of frequencies (in Hz). The phase response is in radians. | 61 // set of frequencies (in Hz). The phase response is in radians. |
62 void getFrequencyResponse(int nFrequencies, | 62 void getFrequencyResponse(int nFrequencies, |
63 const float* frequencyHz, | 63 const float* frequencyHz, |
64 float* magResponse, | 64 float* magResponse, |
65 float* phaseResponse); | 65 float* phaseResponse); |
66 | 66 |
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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 WebCore |
96 | 96 |
97 #endif // BiquadProcessor_h | 97 #endif // BiquadProcessor_h |
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