/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * The origin of this IDL file is
 * https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html
 *
 * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
 * liability, trademark and document use rules apply.
 */

[PrefControlled]
interface BiquadFilterNode : AudioNode {

    // Filter type.
    const unsigned short LOWPASS = 0;
    const unsigned short HIGHPASS = 1;
    const unsigned short BANDPASS = 2;
    const unsigned short LOWSHELF = 3;
    const unsigned short HIGHSHELF = 4;
    const unsigned short PEAKING = 5;
    const unsigned short NOTCH = 6;
    const unsigned short ALLPASS = 7;

    [SetterThrows]
    attribute unsigned short type;
    readonly attribute AudioParam frequency; // in Hertz
    readonly attribute AudioParam Q; // Quality factor
    readonly attribute AudioParam gain; // in Decibels

    // void getFrequencyResponse(Float32Array frequencyHz,
    //                           Float32Array magResponse,
    //                           Float32Array phaseResponse);

};