| 1 | package cz.vutbr.feec.packets.rsi; |
| 2 | |
| 3 | import cz.vutbr.feec.packets.PacketGenerateException; |
| 4 | import cz.vutbr.feec.packets.PacketParseException; |
| 5 | import cz.vutbr.feec.packets.PacketUtils; |
| 6 | import org.apache.commons.lang.builder.ToStringBuilder; |
| 7 | |
| 8 | public class GroupAndAvgPktSizeBlock extends SubReportBlock { |
| 9 | public int avgPacketSize = -1; |
| 10 | public long receiverGroupSize = -1; |
| 11 | |
| 12 | public int parse(byte[] array, int offset, int packetLength) throws PacketParseException { |
| 13 | if(packetLength < 4*2) { |
| 14 | throw new PacketParseException("packet is too short!"); |
| 15 | } |
| 16 | // SBRT + Length |
| 17 | super.parse(array, offset, packetLength); |
| 18 | assert this.getType() == groupAndAvgPktSize; |
| 19 | // Receiver group size |
| 20 | this.receiverGroupSize = PacketUtils.getOctet2(array, offset+2); |
| 21 | // Jitter |
| 22 | this.receiverGroupSize = PacketUtils.getOctet4(array, offset+4); |
| 23 | |
| 24 | return 4*2; |
| 25 | } |
| 26 | |
| 27 | public int generate(byte[] array, int offset) throws PacketGenerateException { |
| 28 | assert this.getType() == groupAndAvgPktSize; |
| 29 | assert this.avgPacketSize != -1; |
| 30 | assert this.receiverGroupSize != -1; |
| 31 | |
| 32 | // SBRT + length |
| 33 | super.generate(array, offset); |
| 34 | // AVG packet size |
| 35 | PacketUtils.setOctet2(array, offset+2, avgPacketSize); |
| 36 | // avgPacketSize |
| 37 | PacketUtils.setOctet4(array, offset+4, avgPacketSize); |
| 38 | return 4*2; |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * @see java.lang.Object#toString() |
| 43 | */ |
| 44 | public String toString() { |
| 45 | return new ToStringBuilder(this).append("type", this.getType()).append( |
| 46 | "length", this.length).toString(); |
| 47 | } |
| 48 | |
| 49 | } |