| 1 | package cz.vutbr.feec.packets.rsi; |
| 2 | |
| 3 | import java.util.Vector; |
| 4 | |
| 5 | import cz.vutbr.feec.packets.PacketGenerateException; |
| 6 | import cz.vutbr.feec.packets.PacketParseException; |
| 7 | import cz.vutbr.feec.packets.PacketUtils; |
| 8 | import org.apache.commons.lang.builder.ToStringBuilder; |
| 9 | |
| 10 | public class CollisionsBlock extends SubReportBlock { |
| 11 | private Vector<Long> SSRCs = new Vector<Long>(); |
| 12 | |
| 13 | public void addSSRC(long ssrc) { |
| 14 | SSRCs.add(ssrc); |
| 15 | } |
| 16 | |
| 17 | @Override |
| 18 | public int generate(byte[] array, int offset) throws PacketGenerateException { |
| 19 | assert this.getType() == collisionFeedback; |
| 20 | super.generate(array, offset); |
| 21 | assert SSRCs.size()+1 == length; |
| 22 | |
| 23 | for (int i = 0; i < SSRCs.size(); i++) { |
| 24 | PacketUtils.setOctet4(array, offset+8+i*4, SSRCs.get(i)); |
| 25 | } |
| 26 | return 4+4*SSRCs.size(); |
| 27 | } |
| 28 | |
| 29 | @Override |
| 30 | public int parse(byte[] array, int offset, int packetLength) throws PacketParseException { |
| 31 | super.parse(array, offset, packetLength); |
| 32 | assert this.getType() == 8; |
| 33 | for (int i = 0; i < SSRCs.size(); i++) { |
| 34 | long tmp = ((array[4 + i*4 + offset] & 0xff) << 24) |
| 35 | | ((array[5 + i*4 + offset] & 0xff) << 16) |
| 36 | | ((array[6 + i*4 + offset] & 0xff) << 8) |
| 37 | | (array[7 + i*4 + offset] & 0xff); |
| 38 | SSRCs.add(tmp); |
| 39 | } |
| 40 | return 4+4*SSRCs.size(); |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * @see java.lang.Object#toString() |
| 45 | */ |
| 46 | public String toString() { |
| 47 | return new ToStringBuilder(this).append("type", this.getType()).append( |
| 48 | "length", this.length).toString(); |
| 49 | } |
| 50 | |
| 51 | } |