/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.restcomm.media.rtcp;
/**
*
* @author amit bhayani
*
*/
public class RtcpReceiverReport extends RtcpReport {
private static final boolean IS_SENDER = false;
protected RtcpReceiverReport() {
super();
}
public RtcpReceiverReport(boolean padding, long ssrc) {
super(padding, ssrc, RtcpHeader.RTCP_RR);
}
@Override
protected int decode(byte[] rawData, int offSet) {
int tmp = offSet;
offSet = super.decode(rawData, offSet);
this.ssrc |= rawData[offSet++] & 0xFF;
this.ssrc <<= 8;
this.ssrc |= rawData[offSet++] & 0xFF;
this.ssrc <<= 8;
this.ssrc |= rawData[offSet++] & 0xFF;
this.ssrc <<= 8;
this.ssrc |= rawData[offSet++] & 0xFF;
int tmpCount = 0;
while ((offSet - tmp) < this.length) {
RtcpReportBlock rtcpReceptionReportItem = new RtcpReportBlock();
offSet = rtcpReceptionReportItem.decode(rawData, offSet);
this.reportBlocks.add(rtcpReceptionReportItem);
tmpCount++;
}
return offSet;
}
@Override
protected int encode(byte[] rawData, int offSet) {
int startPosition = offSet;
offSet = super.encode(rawData, offSet);
rawData[offSet++] = ((byte) ((this.ssrc & 0xFF000000) >> 24));
rawData[offSet++] = ((byte) ((this.ssrc & 0x00FF0000) >> 16));
rawData[offSet++] = ((byte) ((this.ssrc & 0x0000FF00) >> 8));
rawData[offSet++] = ((byte) ((this.ssrc & 0x000000FF)));
for (RtcpReportBlock report : this.reportBlocks) {
if (report != null) {
offSet = report.encode(rawData, offSet);
} else {
break;
}
}
/* Reduce 4 octets of header and length is in terms 32bits word */
this.length = (offSet - startPosition - 4) / 4;
rawData[startPosition + 2] = ((byte) ((this.length & 0xFF00) >> 8));
rawData[startPosition + 3] = ((byte) (this.length & 0x00FF));
return offSet;
}
@Override
public boolean isSender() {
return IS_SENDER;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder("RECEIVER REPORT: \n");
builder.append("version=").append(this.version).append(", ");
builder.append("padding=").append(this.padding).append(", ");
builder.append("packet type=").append(this.packetType).append(", ");
builder.append("length=").append(this.length).append(", ");
builder.append("ssrc=").append(this.ssrc).append("\n");
for (RtcpReportBlock rr : this.reportBlocks) {
builder.append("\n").append(rr.toString());
}
return builder.toString();
}
}