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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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39 LOWPASS = 0, | 39 LOWPASS = 0, |
40 HIGHPASS = 1, | 40 HIGHPASS = 1, |
41 BANDPASS = 2, | 41 BANDPASS = 2, |
42 LOWSHELF = 3, | 42 LOWSHELF = 3, |
43 HIGHSHELF = 4, | 43 HIGHSHELF = 4, |
44 PEAKING = 5, | 44 PEAKING = 5, |
45 NOTCH = 6, | 45 NOTCH = 6, |
46 ALLPASS = 7 | 46 ALLPASS = 7 |
47 }; | 47 }; |
48 | 48 |
49 static PassRefPtr<BiquadFilterNode> create(AudioContext* context, float samp
leRate) | 49 static PassRefPtrWillBeRawPtr<BiquadFilterNode> create(AudioContext* context
, float sampleRate) |
50 { | 50 { |
51 return adoptRef(new BiquadFilterNode(context, sampleRate)); | 51 return adoptRefWillBeNoop(new BiquadFilterNode(context, sampleRate)); |
52 } | 52 } |
53 | 53 |
54 String type() const; | 54 String type() const; |
55 void setType(const String&); | 55 void setType(const String&); |
56 | 56 |
57 AudioParam* frequency() { return biquadProcessor()->parameter1(); } | 57 AudioParam* frequency() { return biquadProcessor()->parameter1(); } |
58 AudioParam* q() { return biquadProcessor()->parameter2(); } | 58 AudioParam* q() { return biquadProcessor()->parameter2(); } |
59 AudioParam* gain() { return biquadProcessor()->parameter3(); } | 59 AudioParam* gain() { return biquadProcessor()->parameter3(); } |
60 AudioParam* detune() { return biquadProcessor()->parameter4(); } | 60 AudioParam* detune() { return biquadProcessor()->parameter4(); } |
61 | 61 |
62 // Get the magnitude and phase response of the filter at the given | 62 // Get the magnitude and phase response of the filter at the given |
63 // set of frequencies (in Hz). The phase response is in radians. | 63 // set of frequencies (in Hz). The phase response is in radians. |
64 void getFrequencyResponse(const Float32Array* frequencyHz, | 64 void getFrequencyResponse(const Float32Array* frequencyHz, |
65 Float32Array* magResponse, | 65 Float32Array* magResponse, |
66 Float32Array* phaseResponse); | 66 Float32Array* phaseResponse); |
67 | 67 |
68 private: | 68 private: |
69 BiquadFilterNode(AudioContext*, float sampleRate); | 69 BiquadFilterNode(AudioContext*, float sampleRate); |
70 | 70 |
71 BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(pr
ocessor()); } | 71 BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(pr
ocessor()); } |
72 bool setType(unsigned); // Returns true on success. | 72 bool setType(unsigned); // Returns true on success. |
73 }; | 73 }; |
74 | 74 |
75 } // namespace WebCore | 75 } // namespace WebCore |
76 | 76 |
77 #endif // BiquadFilterNode_h | 77 #endif // BiquadFilterNode_h |
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