michael@0: /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0:  *
michael@0:  * The origin of this IDL file is
michael@0:  * https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html
michael@0:  *
michael@0:  * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
michael@0:  * liability, trademark and document use rules apply.
michael@0:  */
michael@0: 
michael@0: enum BiquadFilterType {
michael@0:   // Hack: Use numbers to support alternate enum values
michael@0:   "0", "1", "2", "3", "4", "5", "6", "7",
michael@0: 
michael@0:   "lowpass",
michael@0:   "highpass",
michael@0:   "bandpass",
michael@0:   "lowshelf",
michael@0:   "highshelf",
michael@0:   "peaking",
michael@0:   "notch",
michael@0:   "allpass"
michael@0: };
michael@0: 
michael@0: interface BiquadFilterNode : AudioNode {
michael@0: 
michael@0:     attribute BiquadFilterType type;
michael@0:     readonly attribute AudioParam frequency; // in Hertz
michael@0:     readonly attribute AudioParam detune; // in Cents
michael@0:     readonly attribute AudioParam Q; // Quality factor
michael@0:     readonly attribute AudioParam gain; // in Decibels
michael@0: 
michael@0:     void getFrequencyResponse(Float32Array frequencyHz,
michael@0:                               Float32Array magResponse,
michael@0:                               Float32Array phaseResponse);
michael@0: 
michael@0: };
michael@0: 
michael@0: /*
michael@0:  * The origin of this IDL file is
michael@0:  * https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#AlternateNames
michael@0:  */
michael@0: partial interface BiquadFilterNode {
michael@0:     [Pref="media.webaudio.legacy.BiquadFilterNode"]
michael@0:     const unsigned short LOWPASS = 0;
michael@0:     [Pref="media.webaudio.legacy.BiquadFilterNode"]
michael@0:     const unsigned short HIGHPASS = 1;
michael@0:     [Pref="media.webaudio.legacy.BiquadFilterNode"]
michael@0:     const unsigned short BANDPASS = 2;
michael@0:     [Pref="media.webaudio.legacy.BiquadFilterNode"]
michael@0:     const unsigned short LOWSHELF = 3;
michael@0:     [Pref="media.webaudio.legacy.BiquadFilterNode"]
michael@0:     const unsigned short HIGHSHELF = 4;
michael@0:     [Pref="media.webaudio.legacy.BiquadFilterNode"]
michael@0:     const unsigned short PEAKING = 5;
michael@0:     [Pref="media.webaudio.legacy.BiquadFilterNode"]
michael@0:     const unsigned short NOTCH = 6;
michael@0:     [Pref="media.webaudio.legacy.BiquadFilterNode"]
michael@0:     const unsigned short ALLPASS = 7;
michael@0: };
michael@0: