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| 1 /* | 1 /* |
| 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ | 9 */ |
| 10 | 10 |
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| 162 AssignUWord32(buffer, pos, (*it).SSRC); | 162 AssignUWord32(buffer, pos, (*it).SSRC); |
| 163 AssignUWord8(buffer, pos, (*it).FractionLost); | 163 AssignUWord8(buffer, pos, (*it).FractionLost); |
| 164 AssignUWord24(buffer, pos, (*it).CumulativeNumOfPacketsLost); | 164 AssignUWord24(buffer, pos, (*it).CumulativeNumOfPacketsLost); |
| 165 AssignUWord32(buffer, pos, (*it).ExtendedHighestSequenceNumber); | 165 AssignUWord32(buffer, pos, (*it).ExtendedHighestSequenceNumber); |
| 166 AssignUWord32(buffer, pos, (*it).Jitter); | 166 AssignUWord32(buffer, pos, (*it).Jitter); |
| 167 AssignUWord32(buffer, pos, (*it).LastSR); | 167 AssignUWord32(buffer, pos, (*it).LastSR); |
| 168 AssignUWord32(buffer, pos, (*it).DelayLastSR); | 168 AssignUWord32(buffer, pos, (*it).DelayLastSR); |
| 169 } | 169 } |
| 170 } | 170 } |
| 171 | 171 |
| 172 // Transmission Time Offsets in RTP Streams (RFC 5450). | |
| 173 // | |
| 174 // 0 1 2 3 | |
| 175 // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
| 176 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 177 // hdr |V=2|P| RC | PT=IJ=195 | length | | |
| 178 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 179 // | inter-arrival jitter | | |
| 180 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 181 // . . | |
| 182 // . . | |
| 183 // . . | |
| 184 // | inter-arrival jitter | | |
| 185 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 186 | |
| 187 void CreateIj(const std::vector<uint32_t>& ij_items, | |
| 188 uint8_t* buffer, | |
| 189 size_t* pos) { | |
| 190 for (uint32_t item : ij_items) | |
| 191 AssignUWord32(buffer, pos, item); | |
| 192 } | |
| 193 | |
| 194 // Source Description (SDES) (RFC 3550). | 172 // Source Description (SDES) (RFC 3550). |
| 195 // | 173 // |
| 196 // 0 1 2 3 | 174 // 0 1 2 3 |
| 197 // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | 175 // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 198 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 176 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 199 // header |V=2|P| SC | PT=SDES=202 | length | | 177 // header |V=2|P| SC | PT=SDES=202 | length | |
| 200 // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ | 178 // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ |
| 201 // chunk | SSRC/CSRC_1 | | 179 // chunk | SSRC/CSRC_1 | |
| 202 // 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 180 // 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 203 // | SDES items | | 181 // | SDES items | |
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| 803 bool ReceiverReport::WithReportBlock(const ReportBlock& block) { | 781 bool ReceiverReport::WithReportBlock(const ReportBlock& block) { |
| 804 if (report_blocks_.size() >= kMaxNumberOfReportBlocks) { | 782 if (report_blocks_.size() >= kMaxNumberOfReportBlocks) { |
| 805 LOG(LS_WARNING) << "Max report blocks reached."; | 783 LOG(LS_WARNING) << "Max report blocks reached."; |
| 806 return false; | 784 return false; |
| 807 } | 785 } |
| 808 report_blocks_.push_back(block.report_block_); | 786 report_blocks_.push_back(block.report_block_); |
| 809 rr_.NumberOfReportBlocks = report_blocks_.size(); | 787 rr_.NumberOfReportBlocks = report_blocks_.size(); |
| 810 return true; | 788 return true; |
| 811 } | 789 } |
| 812 | 790 |
| 813 bool Ij::Create(uint8_t* packet, | |
| 814 size_t* index, | |
| 815 size_t max_length, | |
| 816 RtcpPacket::PacketReadyCallback* callback) const { | |
| 817 while (*index + BlockLength() > max_length) { | |
| 818 if (!OnBufferFull(packet, index, callback)) | |
| 819 return false; | |
| 820 } | |
| 821 size_t length = ij_items_.size(); | |
| 822 CreateHeader(length, PT_IJ, length, packet, index); | |
| 823 CreateIj(ij_items_, packet, index); | |
| 824 return true; | |
| 825 } | |
| 826 | |
| 827 bool Ij::WithJitterItem(uint32_t jitter) { | |
| 828 if (ij_items_.size() >= kMaxNumberOfIjItems) { | |
| 829 LOG(LS_WARNING) << "Max inter-arrival jitter items reached."; | |
| 830 return false; | |
| 831 } | |
| 832 ij_items_.push_back(jitter); | |
| 833 return true; | |
| 834 } | |
| 835 | |
| 836 bool Sdes::Create(uint8_t* packet, | 791 bool Sdes::Create(uint8_t* packet, |
| 837 size_t* index, | 792 size_t* index, |
| 838 size_t max_length, | 793 size_t max_length, |
| 839 RtcpPacket::PacketReadyCallback* callback) const { | 794 RtcpPacket::PacketReadyCallback* callback) const { |
| 840 assert(!chunks_.empty()); | 795 assert(!chunks_.empty()); |
| 841 while (*index + BlockLength() > max_length) { | 796 while (*index + BlockLength() > max_length) { |
| 842 if (!OnBufferFull(packet, index, callback)) | 797 if (!OnBufferFull(packet, index, callback)) |
| 843 return false; | 798 return false; |
| 844 } | 799 } |
| 845 CreateHeader(chunks_.size(), PT_SDES, HeaderLength(), packet, index); | 800 CreateHeader(chunks_.size(), PT_SDES, HeaderLength(), packet, index); |
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| 1220 return length_; | 1175 return length_; |
| 1221 } | 1176 } |
| 1222 | 1177 |
| 1223 void RawPacket::SetLength(size_t length) { | 1178 void RawPacket::SetLength(size_t length) { |
| 1224 assert(length <= buffer_length_); | 1179 assert(length <= buffer_length_); |
| 1225 length_ = length; | 1180 length_ = length; |
| 1226 } | 1181 } |
| 1227 | 1182 |
| 1228 } // namespace rtcp | 1183 } // namespace rtcp |
| 1229 } // namespace webrtc | 1184 } // namespace webrtc |
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