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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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48 | 48 |
49 // Get the magnitude and phase response of the filter at the given | 49 // Get the magnitude and phase response of the filter at the given |
50 // set of frequencies (in Hz). The phase response is in radians. | 50 // set of frequencies (in Hz). The phase response is in radians. |
51 void getFrequencyResponse(int nFrequencies, const float* frequencyHz, float*
magResponse, float* phaseResponse); | 51 void getFrequencyResponse(int nFrequencies, const float* frequencyHz, float*
magResponse, float* phaseResponse); |
52 | 52 |
53 double tailTime() const override; | 53 double tailTime() const override; |
54 double latencyTime() const override; | 54 double latencyTime() const override; |
55 | 55 |
56 protected: | 56 protected: |
57 Biquad m_biquad; | 57 Biquad m_biquad; |
58 BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(pr
ocessor()); } | 58 BiquadProcessor* getBiquadProcessor() { return static_cast<BiquadProcessor*>
(processor()); } |
59 | 59 |
60 // To prevent audio glitches when parameters are changed, | 60 // To prevent audio glitches when parameters are changed, |
61 // dezippering is used to slowly change the parameters. | 61 // dezippering is used to slowly change the parameters. |
62 void updateCoefficientsIfNecessary(int); | 62 void updateCoefficientsIfNecessary(int); |
63 // Update the biquad cofficients with the given parameters | 63 // Update the biquad cofficients with the given parameters |
64 void updateCoefficients(int, const float* frequency, const float* Q, const f
loat* gain, const float* detune); | 64 void updateCoefficients(int, const float* frequency, const float* Q, const f
loat* gain, const float* detune); |
65 | 65 |
66 private: | 66 private: |
67 // Synchronize process() with getting and setting the filter coefficients. | 67 // Synchronize process() with getting and setting the filter coefficients. |
68 mutable Mutex m_processLock; | 68 mutable Mutex m_processLock; |
69 }; | 69 }; |
70 | 70 |
71 } // namespace blink | 71 } // namespace blink |
72 | 72 |
73 #endif // BiquadDSPKernel_h | 73 #endif // BiquadDSPKernel_h |
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