| /* |
| * Copyright (C) 2011, Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include "AudioBasicProcessorNode.h" |
| #include "BiquadProcessor.h" |
| |
| namespace WebCore { |
| |
| class AudioParam; |
| |
| class BiquadFilterNode final : public AudioBasicProcessorNode { |
| WTF_MAKE_ISO_ALLOCATED(BiquadFilterNode); |
| public: |
| static Ref<BiquadFilterNode> create(AudioContext& context, float sampleRate) |
| { |
| return adoptRef(*new BiquadFilterNode(context, sampleRate)); |
| } |
| |
| BiquadFilterType type() const; |
| void setType(BiquadFilterType); |
| |
| AudioParam* frequency() { return biquadProcessor()->parameter1(); } |
| AudioParam* q() { return biquadProcessor()->parameter2(); } |
| AudioParam* gain() { return biquadProcessor()->parameter3(); } |
| AudioParam* detune() { return biquadProcessor()->parameter4(); } |
| |
| // Get the magnitude and phase response of the filter at the given |
| // set of frequencies (in Hz). The phase response is in radians. |
| void getFrequencyResponse(const RefPtr<Float32Array>& frequencyHz, const RefPtr<Float32Array>& magResponse, const RefPtr<Float32Array>& phaseResponse); |
| |
| private: |
| BiquadFilterNode(AudioContext&, float sampleRate); |
| |
| BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(processor()); } |
| }; |
| |
| } // namespace WebCore |