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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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| 312 const size_t kRrHeaderLength = 8; | 312 const size_t kRrHeaderLength = 8; |
| 313 return kRrHeaderLength + report_blocks_.size() * kReportBlockLength; | 313 return kRrHeaderLength + report_blocks_.size() * kReportBlockLength; |
| 314 } | 314 } |
| 315 | 315 |
| 316 RTCPUtility::RTCPPacketRR rr_; | 316 RTCPUtility::RTCPPacketRR rr_; |
| 317 std::vector<RTCPUtility::RTCPPacketReportBlockItem> report_blocks_; | 317 std::vector<RTCPUtility::RTCPPacketReportBlockItem> report_blocks_; |
| 318 | 318 |
| 319 RTC_DISALLOW_COPY_AND_ASSIGN(ReceiverReport); | 319 RTC_DISALLOW_COPY_AND_ASSIGN(ReceiverReport); |
| 320 }; | 320 }; |
| 321 | 321 |
| 322 // Transmission Time Offsets in RTP Streams (RFC 5450). | |
| 323 // | |
| 324 // 0 1 2 3 | |
| 325 // 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 | |
| 326 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 327 // hdr |V=2|P| RC | PT=IJ=195 | length | | |
| 328 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 329 // | inter-arrival jitter | | |
| 330 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 331 // . . | |
| 332 // . . | |
| 333 // . . | |
| 334 // | inter-arrival jitter | | |
| 335 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 336 // | |
| 337 // If present, this RTCP packet must be placed after a receiver report | |
| 338 // (inside a compound RTCP packet), and MUST have the same value for RC | |
| 339 // (reception report count) as the receiver report. | |
| 340 | |
| 341 class Ij : public RtcpPacket { | |
| 342 public: | |
| 343 Ij() : RtcpPacket() {} | |
| 344 | |
| 345 virtual ~Ij() {} | |
| 346 | |
| 347 bool WithJitterItem(uint32_t jitter); | |
| 348 | |
| 349 protected: | |
| 350 bool Create(uint8_t* packet, | |
| 351 size_t* index, | |
| 352 size_t max_length, | |
| 353 RtcpPacket::PacketReadyCallback* callback) const override; | |
| 354 | |
| 355 private: | |
| 356 static const int kMaxNumberOfIjItems = 0x1f; | |
| 357 | |
| 358 size_t BlockLength() const { | |
| 359 return kHeaderLength + 4 * ij_items_.size(); | |
| 360 } | |
| 361 | |
| 362 std::vector<uint32_t> ij_items_; | |
| 363 | |
| 364 RTC_DISALLOW_COPY_AND_ASSIGN(Ij); | |
| 365 }; | |
| 366 | |
| 367 // Source Description (SDES) (RFC 3550). | 322 // Source Description (SDES) (RFC 3550). |
| 368 // | 323 // |
| 369 // 0 1 2 3 | 324 // 0 1 2 3 |
| 370 // 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 | 325 // 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 |
| 371 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 326 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 372 // header |V=2|P| SC | PT=SDES=202 | length | | 327 // header |V=2|P| SC | PT=SDES=202 | length | |
| 373 // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ | 328 // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ |
| 374 // chunk | SSRC/CSRC_1 | | 329 // chunk | SSRC/CSRC_1 | |
| 375 // 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 330 // 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 376 // | SDES items | | 331 // | SDES items | |
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| 1157 | 1112 |
| 1158 private: | 1113 private: |
| 1159 const size_t buffer_length_; | 1114 const size_t buffer_length_; |
| 1160 size_t length_; | 1115 size_t length_; |
| 1161 rtc::scoped_ptr<uint8_t[]> buffer_; | 1116 rtc::scoped_ptr<uint8_t[]> buffer_; |
| 1162 }; | 1117 }; |
| 1163 | 1118 |
| 1164 } // namespace rtcp | 1119 } // namespace rtcp |
| 1165 } // namespace webrtc | 1120 } // namespace webrtc |
| 1166 #endif // WEBRTC_MODULES_RTP_RTCP_RTCP_PACKET_H_ | 1121 #endif // WEBRTC_MODULES_RTP_RTCP_RTCP_PACKET_H_ |
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