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Side by Side Diff: webrtc/modules/rtp_rtcp/source/rtcp_packet.h

Issue 1439553003: [rtp_rtcp] rtcp::Sdes cleaned and got Parse function (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Created 5 years, 1 month ago
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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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357 357
358 size_t BlockLength() const { 358 size_t BlockLength() const {
359 return kHeaderLength + 4 * ij_items_.size(); 359 return kHeaderLength + 4 * ij_items_.size();
360 } 360 }
361 361
362 std::vector<uint32_t> ij_items_; 362 std::vector<uint32_t> ij_items_;
363 363
364 RTC_DISALLOW_COPY_AND_ASSIGN(Ij); 364 RTC_DISALLOW_COPY_AND_ASSIGN(Ij);
365 }; 365 };
366 366
367 // Source Description (SDES) (RFC 3550).
368 //
369 // 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
371 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
372 // header |V=2|P| SC | PT=SDES=202 | length |
373 // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
374 // chunk | SSRC/CSRC_1 |
375 // 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
376 // | SDES items |
377 // | ... |
378 // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
379 // chunk | SSRC/CSRC_2 |
380 // 2 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
381 // | SDES items |
382 // | ... |
383 // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
384 //
385 // Canonical End-Point Identifier SDES Item (CNAME)
386 //
387 // 0 1 2 3
388 // 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
389 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
390 // | CNAME=1 | length | user and domain name ...
391 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
392
393 class Sdes : public RtcpPacket {
394 public:
395 Sdes() : RtcpPacket() {}
396
397 virtual ~Sdes() {}
398
399 bool WithCName(uint32_t ssrc, const std::string& cname);
400
401 struct Chunk {
402 uint32_t ssrc;
403 std::string name;
404 int null_octets;
405 };
406
407 protected:
408 bool Create(uint8_t* packet,
409 size_t* index,
410 size_t max_length,
411 RtcpPacket::PacketReadyCallback* callback) const override;
412
413 private:
414 static const int kMaxNumberOfChunks = 0x1f;
415
416 size_t BlockLength() const;
417
418 std::vector<Chunk> chunks_;
419
420 RTC_DISALLOW_COPY_AND_ASSIGN(Sdes);
421 };
422
423 // 367 //
424 // Bye packet (BYE) (RFC 3550). 368 // Bye packet (BYE) (RFC 3550).
425 // 369 //
426 // 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 1 370 // 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
427 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 371 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
428 // |V=2|P| SC | PT=BYE=203 | length | 372 // |V=2|P| SC | PT=BYE=203 | length |
429 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 373 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
430 // | SSRC/CSRC | 374 // | SSRC/CSRC |
431 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 375 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
432 // : ... : 376 // : ... :
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1157 1101
1158 private: 1102 private:
1159 const size_t buffer_length_; 1103 const size_t buffer_length_;
1160 size_t length_; 1104 size_t length_;
1161 rtc::scoped_ptr<uint8_t[]> buffer_; 1105 rtc::scoped_ptr<uint8_t[]> buffer_;
1162 }; 1106 };
1163 1107
1164 } // namespace rtcp 1108 } // namespace rtcp
1165 } // namespace webrtc 1109 } // namespace webrtc
1166 #endif // WEBRTC_MODULES_RTP_RTCP_RTCP_PACKET_H_ 1110 #endif // WEBRTC_MODULES_RTP_RTCP_RTCP_PACKET_H_
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