| /* |
| * 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. |
| */ |
| |
| #ifndef BiquadFilterNode_h |
| #define BiquadFilterNode_h |
| |
| #include "core/dom/DOMTypedArray.h" |
| #include "modules/webaudio/AudioNode.h" |
| #include "modules/webaudio/BiquadProcessor.h" |
| |
| namespace blink { |
| |
| class BaseAudioContext; |
| class AudioParam; |
| class BiquadFilterOptions; |
| |
| class BiquadFilterNode final : public AudioNode { |
| DEFINE_WRAPPERTYPEINFO(); |
| |
| public: |
| // These must be defined as in the .idl file and must match those in the BiquadProcessor class. |
| enum { |
| LOWPASS = 0, |
| HIGHPASS = 1, |
| BANDPASS = 2, |
| LOWSHELF = 3, |
| HIGHSHELF = 4, |
| PEAKING = 5, |
| NOTCH = 6, |
| ALLPASS = 7 |
| }; |
| |
| static BiquadFilterNode* create(BaseAudioContext&, ExceptionState&); |
| static BiquadFilterNode* create(BaseAudioContext*, |
| const BiquadFilterOptions&, |
| ExceptionState&); |
| |
| DECLARE_VIRTUAL_TRACE(); |
| |
| String type() const; |
| void setType(const String&); |
| |
| AudioParam* frequency() { return m_frequency; } |
| AudioParam* q() { return m_q; } |
| AudioParam* gain() { return m_gain; } |
| AudioParam* detune() { return m_detune; } |
| |
| // 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 DOMFloat32Array* frequencyHz, |
| DOMFloat32Array* magResponse, |
| DOMFloat32Array* phaseResponse); |
| |
| private: |
| BiquadFilterNode(BaseAudioContext&); |
| |
| BiquadProcessor* getBiquadProcessor() const; |
| bool setType(unsigned); // Returns true on success. |
| |
| Member<AudioParam> m_frequency; |
| Member<AudioParam> m_q; |
| Member<AudioParam> m_gain; |
| Member<AudioParam> m_detune; |
| }; |
| |
| } // namespace blink |
| |
| #endif // BiquadFilterNode_h |