content: /*******************************************************************************
   * Software Name : RCS IMS Stack
   *
   * Copyright (C) 2010-2016 Orange.
   *
   * 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.
   ******************************************************************************/
  
  package com.orangelabs.rcs.core.ims.protocol.rtp.core;
  
  import java.io.DataOutputStream;
  import java.io.IOException;
  
  /**
   * RTCP APP packet
   * 
   * @author jexa7410
   */
  public class RtcpAppPacket extends RtcpPacket {
      public int ssrc;
      public int name;
      public int subtype;
  
      public RtcpAppPacket(RtcpPacket parent) {
          super(parent);
  
          super.type = 204;
      }
  
      public RtcpAppPacket(int ssrc, int name, int subtype, byte data[]) {
          this.ssrc = ssrc;
          this.name = name;
          this.subtype = subtype;
          this.data = data;
          super.type = 204;
  
          if ((data.length & 3) != 0) {
              throw new IllegalArgumentException("Bad data length");
          }
          if (subtype < 0 || subtype > 31) {
              throw new IllegalArgumentException("Bad subtype");
          } else {
              return;
          }
      }
  
      public int calcLength() {
          return 12 + data.length;
      }
  
      public void assemble(DataOutputStream out) throws IOException {
          out.writeByte(128 + subtype);
          out.writeByte(204);
          out.writeShort(2 + (data.length >> 2));
          out.writeInt(ssrc);
          out.writeInt(name);
          out.write(data);
      }
  }
  