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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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44 m_detune(AudioParam::create(context, ParamTypeBiquadFilterDetune, 0.0)) { | 44 m_detune(AudioParam::create(context, ParamTypeBiquadFilterDetune, 0.0)) { |
45 setHandler(AudioBasicProcessorHandler::create( | 45 setHandler(AudioBasicProcessorHandler::create( |
46 AudioHandler::NodeTypeBiquadFilter, *this, context.sampleRate(), | 46 AudioHandler::NodeTypeBiquadFilter, *this, context.sampleRate(), |
47 WTF::wrapUnique(new BiquadProcessor( | 47 WTF::wrapUnique(new BiquadProcessor( |
48 context.sampleRate(), 1, m_frequency->handler(), m_q->handler(), | 48 context.sampleRate(), 1, m_frequency->handler(), m_q->handler(), |
49 m_gain->handler(), m_detune->handler())))); | 49 m_gain->handler(), m_detune->handler())))); |
50 | 50 |
51 // Explicitly set the filter type so that any histograms get updated with the | 51 // Explicitly set the filter type so that any histograms get updated with the |
52 // default value. Otherwise, the histogram won't ever show it. | 52 // default value. Otherwise, the histogram won't ever show it. |
53 setType("lowpass"); | 53 setType("lowpass"); |
| 54 |
| 55 // Initialize the handler so that AudioParams can be processed. |
| 56 handler().initialize(); |
54 } | 57 } |
55 | 58 |
56 BiquadFilterNode* BiquadFilterNode::create(BaseAudioContext& context, | 59 BiquadFilterNode* BiquadFilterNode::create(BaseAudioContext& context, |
57 ExceptionState& exceptionState) { | 60 ExceptionState& exceptionState) { |
58 DCHECK(isMainThread()); | 61 DCHECK(isMainThread()); |
59 | 62 |
60 if (context.isContextClosed()) { | 63 if (context.isContextClosed()) { |
61 context.throwExceptionForClosedState(exceptionState); | 64 context.throwExceptionForClosedState(exceptionState); |
62 return nullptr; | 65 return nullptr; |
63 } | 66 } |
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176 DCHECK(phaseResponse); | 179 DCHECK(phaseResponse); |
177 | 180 |
178 int n = std::min(frequencyHz->length(), | 181 int n = std::min(frequencyHz->length(), |
179 std::min(magResponse->length(), phaseResponse->length())); | 182 std::min(magResponse->length(), phaseResponse->length())); |
180 if (n) | 183 if (n) |
181 getBiquadProcessor()->getFrequencyResponse( | 184 getBiquadProcessor()->getFrequencyResponse( |
182 n, frequencyHz->data(), magResponse->data(), phaseResponse->data()); | 185 n, frequencyHz->data(), magResponse->data(), phaseResponse->data()); |
183 } | 186 } |
184 | 187 |
185 } // namespace blink | 188 } // namespace blink |
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