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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 |
| (...skipping 31 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 42 BANDPASS = 2, | 42 BANDPASS = 2, |
| 43 LOWSHELF = 3, | 43 LOWSHELF = 3, |
| 44 HIGHSHELF = 4, | 44 HIGHSHELF = 4, |
| 45 PEAKING = 5, | 45 PEAKING = 5, |
| 46 NOTCH = 6, | 46 NOTCH = 6, |
| 47 ALLPASS = 7 | 47 ALLPASS = 7 |
| 48 }; | 48 }; |
| 49 | 49 |
| 50 static BiquadFilterNode* create(AudioContext* context, float sampleRate) | 50 static BiquadFilterNode* create(AudioContext* context, float sampleRate) |
| 51 { | 51 { |
| 52 return adoptRefCountedGarbageCollectedWillBeNoop(new BiquadFilterNode(co
ntext, sampleRate)); | 52 return new BiquadFilterNode(context, sampleRate); |
| 53 } | 53 } |
| 54 | 54 |
| 55 String type() const; | 55 String type() const; |
| 56 void setType(const String&); | 56 void setType(const String&); |
| 57 | 57 |
| 58 AudioParam* frequency() { return biquadProcessor()->parameter1(); } | 58 AudioParam* frequency() { return biquadProcessor()->parameter1(); } |
| 59 AudioParam* q() { return biquadProcessor()->parameter2(); } | 59 AudioParam* q() { return biquadProcessor()->parameter2(); } |
| 60 AudioParam* gain() { return biquadProcessor()->parameter3(); } | 60 AudioParam* gain() { return biquadProcessor()->parameter3(); } |
| 61 AudioParam* detune() { return biquadProcessor()->parameter4(); } | 61 AudioParam* detune() { return biquadProcessor()->parameter4(); } |
| 62 | 62 |
| 63 // Get the magnitude and phase response of the filter at the given | 63 // Get the magnitude and phase response of the filter at the given |
| 64 // set of frequencies (in Hz). The phase response is in radians. | 64 // set of frequencies (in Hz). The phase response is in radians. |
| 65 void getFrequencyResponse(const Float32Array* frequencyHz, | 65 void getFrequencyResponse(const Float32Array* frequencyHz, |
| 66 Float32Array* magResponse, | 66 Float32Array* magResponse, |
| 67 Float32Array* phaseResponse); | 67 Float32Array* phaseResponse); |
| 68 | 68 |
| 69 private: | 69 private: |
| 70 BiquadFilterNode(AudioContext*, float sampleRate); | 70 BiquadFilterNode(AudioContext*, float sampleRate); |
| 71 | 71 |
| 72 BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(pr
ocessor()); } | 72 BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(pr
ocessor()); } |
| 73 bool setType(unsigned); // Returns true on success. | 73 bool setType(unsigned); // Returns true on success. |
| 74 }; | 74 }; |
| 75 | 75 |
| 76 } // namespace blink | 76 } // namespace blink |
| 77 | 77 |
| 78 #endif // BiquadFilterNode_h | 78 #endif // BiquadFilterNode_h |
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