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https://github.com/moonlight-stream/moonlight-android.git
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92 lines
3.0 KiB
Java
92 lines
3.0 KiB
Java
/**
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* Java RTP Library (jlibrtp)
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* Copyright (C) 2006 Arne Kepp
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package jlibrtp;
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/**
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* Application specific RTCP packets
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*
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* @author Arne Kepp
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*/
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public class RtcpPktAPP extends RtcpPkt {
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/** Name of packet, 4 bytes ASCII */
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protected byte[] pktName = null;
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/** Data of packet */
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protected byte[] pktData = null;
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/**
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* Constructor for a new Application RTCP packet
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*
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* @param ssrc the SSRC of the sender, presumably taken from RTPSession
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* @param subtype the subtype of packet, application specific
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* @param pktName byte[4] representing ASCII name of packet
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* @param pktData the byte[4x] data that represents the message itself
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*/
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protected RtcpPktAPP(long ssrc, int subtype, byte[] pktName, byte[] pktData) {
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// Fetch all the right stuff from the database
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super.ssrc = ssrc;
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super.packetType = 204;
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super.itemCount = subtype;
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this.pktName = pktName;
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this.pktData = pktData;
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}
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/**
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* Constructor that parses a received Application RTCP packet
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*
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* @param aRawPkt the raw packet containing the date
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* @param start where in the raw packet this packet starts
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*/
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protected RtcpPktAPP(byte[] aRawPkt, int start) {
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super.ssrc = StaticProcs.bytesToUIntLong(aRawPkt,4);
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super.rawPkt = aRawPkt;
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if(!super.parseHeaders(start) || packetType != 204 ) {
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if(RTPSession.rtpDebugLevel > 2) {
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System.out.println(" <-> RtcpPktAPP.parseHeaders() etc. problem");
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}
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super.problem = -204;
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} else {
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//System.out.println("super.length: " + super.length);
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if(super.length > 1) {
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pktName = new byte[4];
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System.arraycopy(aRawPkt, 8, pktName, 0, 4);
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}
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if(super.length > 2) {
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pktData = new byte[(super.length+1)*4 - 12];
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System.arraycopy(aRawPkt, 12, pktData, 0, pktData.length);
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}
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}
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}
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/**
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* Encode the packet into a byte[], saved in .rawPkt
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*
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* CompRtcpPkt will call this automatically
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*/
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protected void encode() {
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super.rawPkt = new byte[12 + this.pktData.length];
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byte[] tmp = StaticProcs.uIntLongToByteWord(super.ssrc);
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System.arraycopy(tmp, 0, super.rawPkt, 4, 4);
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System.arraycopy(this.pktName, 0, super.rawPkt, 8, 4);
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System.arraycopy(this.pktData, 0, super.rawPkt, 12, this.pktData.length);
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writeHeaders();
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//System.out.println("ENCODE: " + super.length + " " + rawPkt.length + " " + pktData.length);
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}
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}
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