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      1 /*
      2  * Copyright (C) 2010, Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1.  Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2.  Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     23  */
     24 
     25 enum PanningModelType {
     26     "equalpower",
     27     "HRTF"
     28 };
     29 
     30 enum DistanceModelType {
     31     "linear",
     32     "inverse",
     33     "exponential"
     34 };
     35 
     36 [
     37     NoInterfaceObject,
     38     Conditional=WEB_AUDIO
     39 ] interface PannerNode : AudioNode {
     40     // Default model for stereo is HRTF
     41     attribute PanningModelType panningModel;
     42 
     43     // Uses a 3D cartesian coordinate system
     44     void setPosition(float x, float y, float z);
     45     void setOrientation(float x, float y, float z);
     46     void setVelocity(float x, float y, float z);
     47 
     48     // Distance model
     49     attribute DistanceModelType distanceModel;
     50 
     51     attribute double refDistance;
     52     attribute double maxDistance;
     53     attribute double rolloffFactor;
     54 
     55     // Directional sound cone
     56     attribute double coneInnerAngle;
     57     attribute double coneOuterAngle;
     58     attribute double coneOuterGain;
     59 };
     60