/*
 *  Copyright 2013 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

package org.webrtc;

import java.util.LinkedList;

/**
 * The parameters for an {@code RtpSender}, as defined in
 * http://w3c.github.io/webrtc-pc/#rtcrtpsender-interface.
 *
 * Note: These structures use nullable Integer/etc. types because in the
 * future, they may be used to construct ORTC RtpSender/RtpReceivers, in
 * which case "null" will be used to represent "choose the implementation
 * default value".
 */
public class RtpParameters {
  public static class Encoding {
    // Set to true to cause this encoding to be sent, and false for it not to
    // be sent.
    public boolean active = true;
    // If non-null, this represents the Transport Independent Application
    // Specific maximum bandwidth defined in RFC3890. If null, there is no
    // maximum bitrate.
    public Integer maxBitrateBps;
    // SSRC to be used by this encoding.
    // Can't be changed between getParameters/setParameters.
    public Long ssrc;
  }

  public static class Codec {
    // Payload type used to identify this codec in RTP packets.
    public int payloadType;
    // Name used to identify the codec. Equivalent to MIME subtype.
    public String name;
    // The media type of this codec. Equivalent to MIME top-level type.
    MediaStreamTrack.MediaType kind;
    // Clock rate in Hertz.
    public Integer clockRate;
    // The number of audio channels used. Set to null for video codecs.
    public Integer numChannels;
  }

  public final LinkedList<Encoding> encodings;
  // Codec parameters can't currently be changed between getParameters and
  // setParameters. Though in the future it will be possible to reorder them or
  // remove them.
  public final LinkedList<Codec> codecs;

  public RtpParameters() {
    encodings = new LinkedList<Encoding>();
    codecs = new LinkedList<Codec>();
  }
}