| 1 | package cz.vutbr.feec.packets.rtcp; |
| 2 | |
| 3 | import java.util.Vector; |
| 4 | |
| 5 | import cz.vutbr.feec.packets.IPacket; |
| 6 | import cz.vutbr.feec.packets.PacketGenerateException; |
| 7 | import cz.vutbr.feec.packets.PacketParseException; |
| 8 | import cz.vutbr.feec.packets.PacketUtils; |
| 9 | import cz.vutbr.feec.session.rtprtcp.internal.RTCPConstants; |
| 10 | import org.apache.commons.lang.builder.EqualsBuilder; |
| 11 | import org.apache.commons.lang.builder.ToStringBuilder; |
| 12 | import org.apache.commons.lang.builder.HashCodeBuilder; |
| 13 | |
| 14 | /** |
| 15 | * The Class ByePacket. |
| 16 | */ |
| 17 | public class ByePacket implements IPacket { |
| 18 | |
| 19 | private int version = RTCPConstants.VERSION; |
| 20 | |
| 21 | private int padding = RTCPConstants.PADDING; |
| 22 | |
| 23 | private int payloadtype = RTCPConstants.RTCP_BYE; |
| 24 | |
| 25 | private int length; |
| 26 | |
| 27 | private int lengthBlock; |
| 28 | |
| 29 | private String rfL; |
| 30 | |
| 31 | private int lengthRfL; |
| 32 | |
| 33 | |
| 34 | public void addSSRC(Long ssrc_csrc) { |
| 35 | ssrcList.add(ssrc_csrc); |
| 36 | } |
| 37 | |
| 38 | public int getVersion() { |
| 39 | return version; |
| 40 | } |
| 41 | |
| 42 | public void setVersion(int version) { |
| 43 | this.version = version; |
| 44 | } |
| 45 | |
| 46 | public int getPadding() { |
| 47 | return padding; |
| 48 | } |
| 49 | |
| 50 | public void setPadding(int padding) { |
| 51 | this.padding = padding; |
| 52 | } |
| 53 | |
| 54 | public int getSourceCount() { |
| 55 | return ssrcList.size(); |
| 56 | } |
| 57 | |
| 58 | public int getPayloadtype() { |
| 59 | return payloadtype; |
| 60 | } |
| 61 | |
| 62 | public void setPayloadtype(int payloadtype) { |
| 63 | this.payloadtype = payloadtype; |
| 64 | } |
| 65 | |
| 66 | public int getLength() { |
| 67 | return length; |
| 68 | } |
| 69 | |
| 70 | public void setLength(int length) { |
| 71 | this.length = length; |
| 72 | } |
| 73 | |
| 74 | public int getLengthBlock() { |
| 75 | return lengthBlock; |
| 76 | } |
| 77 | |
| 78 | public void setLengthBlock(int lengthBlok) { |
| 79 | this.lengthBlock = lengthBlok; |
| 80 | } |
| 81 | |
| 82 | public String getReason() { |
| 83 | return rfL; |
| 84 | } |
| 85 | |
| 86 | public void setReasonText(String rfL) { |
| 87 | this.rfL = rfL; |
| 88 | } |
| 89 | |
| 90 | public int getReasonLength() { |
| 91 | |
| 92 | return this.getReason().length(); |
| 93 | } |
| 94 | |
| 95 | private Vector<Long> ssrcList = new Vector<Long>(); |
| 96 | |
| 97 | public Long getSSRC(int index) { |
| 98 | return ssrcList.get(index); |
| 99 | } |
| 100 | |
| 101 | public int getSSRCCount() { |
| 102 | return ssrcList.size(); |
| 103 | } |
| 104 | |
| 105 | public int generate(byte[] buffer, int offset) |
| 106 | throws PacketGenerateException { |
| 107 | |
| 108 | assert PacketUtils.checkSize(this.getVersion(), 2); |
| 109 | assert PacketUtils.checkSize(this.getPadding(), 1); |
| 110 | assert PacketUtils.checkSize(this.getSourceCount(), 5); |
| 111 | assert PacketUtils.checkSize(this.getPayloadtype(), 8); |
| 112 | assert PacketUtils.checkSize(this.getLength(), 16); |
| 113 | assert PacketUtils.checkSize(this.getLengthBlock(), 8); |
| 114 | // assert PacketUtils.checkSize(this.getRfL()., 24); |
| 115 | |
| 116 | byte V_P_SC = (byte) ((this.getVersion() << 6) & 0xC0 |
| 117 | | (this.getPadding() << 5) & 0x20 | this.getSourceCount() & 0x1F); |
| 118 | buffer[offset] = V_P_SC; |
| 119 | |
| 120 | PacketUtils.setOctet1(buffer, offset + 1, this.getPayloadtype()); |
| 121 | PacketUtils.setOctet2(buffer, offset + 2, this.getLength()); |
| 122 | |
| 123 | int len = 4; |
| 124 | for (Long ssrc : ssrcList) { |
| 125 | PacketUtils.setOctet4(buffer, offset+len, ssrc); |
| 126 | len += 4; |
| 127 | } |
| 128 | |
| 129 | PacketUtils.setOctet1(buffer, offset + len, this |
| 130 | .getLengthBlock()); |
| 131 | len++; |
| 132 | PacketUtils.setOctets(buffer, offset + len, this.getReason(), |
| 133 | this.getReasonLength()); |
| 134 | |
| 135 | return len + getReasonLength(); |
| 136 | } |
| 137 | |
| 138 | public int parse(byte[] buffer, int offset, int length) |
| 139 | throws PacketParseException { |
| 140 | int first = PacketUtils.getOctet1(buffer, offset); |
| 141 | this.setVersion((first & 0xC0) >> 6); |
| 142 | this.setPadding((first & 0x20) >> 5); |
| 143 | long parsedSourceCount = first & 0x1F; |
| 144 | |
| 145 | this.setPayloadtype(PacketUtils.getOctet1(buffer, offset + 1)); |
| 146 | this.setLength(PacketUtils.getOctet2(buffer, offset + 2)); |
| 147 | int len = 4; |
| 148 | ssrcList.clear(); |
| 149 | for (int i = 0; i < parsedSourceCount; i++) { |
| 150 | long ssrc = PacketUtils.getOctet4(buffer, offset+len); |
| 151 | len +=4; |
| 152 | this.addSSRC(ssrc); |
| 153 | } |
| 154 | |
| 155 | this.setLengthBlock(PacketUtils.getOctet1(buffer, offset + len)); |
| 156 | len += 1; |
| 157 | |
| 158 | // TODO overit spravnost |
| 159 | this.setReasonText(PacketUtils.getOctets(buffer, offset + len, 3)); |
| 160 | len += 3; |
| 161 | |
| 162 | if(parsedSourceCount != ssrcList.size()) { |
| 163 | throw new PacketParseException("Neodpovida specifikovany pocet SSRC"); |
| 164 | } |
| 165 | |
| 166 | return len; |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * @see java.lang.Object#equals(Object) |
| 171 | */ |
| 172 | public boolean equals(Object object) { |
| 173 | if (!(object instanceof ByePacket)) { |
| 174 | return false; |
| 175 | } |
| 176 | ByePacket rhs = (ByePacket) object; |
| 177 | return new EqualsBuilder().append(this.ssrcList, rhs.ssrcList) |
| 178 | .append(this.lengthRfL, rhs.lengthRfL).append(this.length, |
| 179 | rhs.length).append(this.rfL, rhs.rfL).append( |
| 180 | this.padding,rhs.padding).append(this.lengthBlock, rhs.lengthBlock) |
| 181 | .append(this.payloadtype, rhs.payloadtype).append(this.version, |
| 182 | rhs.version).isEquals(); |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * @see java.lang.Object#toString() |
| 187 | */ |
| 188 | public String toString() { |
| 189 | return new ToStringBuilder(this).append("groupList", this.ssrcList).append("lengthBlok", this.lengthBlock) |
| 190 | .append("lengthRfL", this.lengthRfL).append("rfL", this.rfL) |
| 191 | .append("version", this.version) |
| 192 | .append("padding", this.padding).append("itemsCount", |
| 193 | this.getSSRCCount()).append("length", this.length) |
| 194 | .append("payloadtype", this.payloadtype).toString(); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * @see java.lang.Object#hashCode() |
| 199 | */ |
| 200 | public int hashCode() { |
| 201 | return new HashCodeBuilder(-12978201, 2019746375).append(this.lengthRfL).append(this.ssrcList) |
| 202 | .append(this.length).append(this.rfL).append(this.lengthBlock) |
| 203 | .append(this.padding).append(this.payloadtype).append( |
| 204 | this.version).toHashCode(); |
| 205 | } |
| 206 | } |