1/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2/* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
4 * You can obtain one at http://mozilla.org/MPL/2.0/.
5 *
6 * The origin of this IDL file is
7 * https://webaudio.github.io/web-audio-api/
8 *
9 * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
10 * liability, trademark and document use rules apply.
11 */
12
13enum BiquadFilterType {
14  "lowpass",
15  "highpass",
16  "bandpass",
17  "lowshelf",
18  "highshelf",
19  "peaking",
20  "notch",
21  "allpass"
22};
23
24dictionary BiquadFilterOptions : AudioNodeOptions {
25             BiquadFilterType type = "lowpass";
26             float            Q = 1;
27             float            detune = 0;
28             float            frequency = 350;
29             float            gain = 0;
30};
31
32[Pref="dom.webaudio.enabled",
33 Constructor(BaseAudioContext context, optional BiquadFilterOptions options)]
34interface BiquadFilterNode : AudioNode {
35
36    attribute BiquadFilterType type;
37    readonly attribute AudioParam frequency; // in Hertz
38    readonly attribute AudioParam detune; // in Cents
39    readonly attribute AudioParam Q; // Quality factor
40    readonly attribute AudioParam gain; // in Decibels
41
42    undefined getFrequencyResponse(Float32Array frequencyHz,
43                              Float32Array magResponse,
44                              Float32Array phaseResponse);
45
46};
47