| 1 | package cz.vutbr.feec.session.rtprtcp.internal; |
| 2 | |
| 3 | import java.util.Random; |
| 4 | |
| 5 | import cz.vutbr.feec.packets.rtp.RTPPacket; |
| 6 | |
| 7 | /** |
| 8 | * The Class Session. |
| 9 | */ |
| 10 | public class Session extends MemberTable { |
| 11 | |
| 12 | /** The rtcp_bw. */ |
| 13 | protected double rtcp_bw; |
| 14 | |
| 15 | /** The payload type. */ |
| 16 | private int payloadType; |
| 17 | |
| 18 | /** The avg_rtcp_size. */ |
| 19 | public double avg_rtcp_size = 60; |
| 20 | |
| 21 | // last computed deterministic interval for RTCP transmition |
| 22 | /** The T. */ |
| 23 | public long T; |
| 24 | |
| 25 | /** The tp. */ |
| 26 | public double tp; |
| 27 | |
| 28 | /** The tc. */ |
| 29 | public double tc; |
| 30 | |
| 31 | /** The tn. */ |
| 32 | public double tn; |
| 33 | |
| 34 | /** The members. */ |
| 35 | public int members; |
| 36 | |
| 37 | /** The pmembers. */ |
| 38 | public int pmembers;/* previous members */ |
| 39 | |
| 40 | /** The packet count. */ |
| 41 | public int packetCount; |
| 42 | |
| 43 | /** The octet count. */ |
| 44 | public int octetCount; |
| 45 | |
| 46 | /** The initial. */ |
| 47 | public boolean initial = true; |
| 48 | |
| 49 | |
| 50 | /** The random offset. */ |
| 51 | private static final short randomOffset = (short) Math.abs((new Random()).nextInt() & 0x000000FF); |
| 52 | |
| 53 | |
| 54 | // caching of last received rtp packet |
| 55 | /** The last RTP pkt received. */ |
| 56 | public RTPPacket lastRTPPktReceived = null; |
| 57 | |
| 58 | /** The last RTP pkt sent. */ |
| 59 | public RTPPacket lastRTPPktSent = null; |
| 60 | |
| 61 | /** |
| 62 | * Gets the payload type. |
| 63 | * |
| 64 | * @return the payload type |
| 65 | */ |
| 66 | public int getPayloadType() { |
| 67 | return payloadType; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Sets the payload type. |
| 72 | * |
| 73 | * @param payloadType the payload type |
| 74 | */ |
| 75 | public void setPayloadType(int payloadType) { |
| 76 | this.payloadType = payloadType; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * On member logout. |
| 81 | */ |
| 82 | protected void onMemberLogout() { |
| 83 | tn = tc + |
| 84 | (((double) members)/(pmembers))*(tn - tc); |
| 85 | tp = tc - |
| 86 | (((double) members)/(pmembers))*(tc - tp); |
| 87 | |
| 88 | setPreviousMemebersCount(members); |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Gets the random offset. |
| 93 | * |
| 94 | * @return the random offset |
| 95 | */ |
| 96 | public short getRandomOffset() { |
| 97 | return randomOffset; |
| 98 | } |
| 99 | |
| 100 | |
| 101 | } |