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 * Copyright (C) 2010, Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 1.  Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 *    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
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[
    Conditional=WEB_AUDIO,
    JSGenerateToJSObject,
    InterfaceName=webkitAudioPannerNode
] interface PannerNode : AudioNode {
    // Panning model
    const unsigned short EQUALPOWER = 0;
    const unsigned short HRTF = 1;
    const unsigned short SOUNDFIELD = 2;

    // Distance model
    const unsigned short LINEAR_DISTANCE = 0;
    const unsigned short INVERSE_DISTANCE = 1;
    const unsigned short EXPONENTIAL_DISTANCE = 2;

    // Default model for stereo is HRTF 
    attribute unsigned short panningModel
        setter raises(DOMException);

    // Uses a 3D cartesian coordinate system 
    void setPosition(in unrestricted float x, in unrestricted float y, in unrestricted float z);
    void setOrientation(in unrestricted float x, in unrestricted float y, in unrestricted float z);
    void setVelocity(in unrestricted float x, in unrestricted float y, in unrestricted float z);

    // Distance model
    attribute unsigned short distanceModel
        setter raises(DOMException);

    attribute unrestricted float refDistance;
    attribute unrestricted float maxDistance;
    attribute unrestricted float rolloffFactor;

    // Directional sound cone
    attribute unrestricted float coneInnerAngle;
    attribute unrestricted float coneOuterAngle;
    attribute unrestricted float coneOuterGain;

    // Dynamically calculated gain values          
    readonly attribute AudioGain coneGain;
    readonly attribute AudioGain distanceGain;
};
