src/cobalt/audio/AudioNode.idl

/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// https://www.w3.org/TR/webaudio/#AudioNode-section

enum ChannelCountMode {
  "max",
  "clamped-max",
  "explicit"
};

enum ChannelInterpretation {
  "speakers",
  "discrete"
};

interface AudioNode : EventTarget {
  [RaisesException] void connect(AudioNode destination,
                                 optional unsigned long output = 0,
                                 optional unsigned long input = 0);
  [RaisesException] void disconnect(optional unsigned long output = 0);

  readonly attribute AudioContext context;
  readonly attribute unsigned long numberOfInputs;
  readonly attribute unsigned long numberOfOutputs;

  // Channel up-mixing and down-mixing rules for all inputs.
  [RaisesException=Setter] attribute unsigned long channelCount;
  attribute ChannelCountMode channelCountMode;
  attribute ChannelInterpretation channelInterpretation;
};