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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 private: | 312 private: |
313 static const int kMaxNumberOfChunks = 0x1f; | 313 static const int kMaxNumberOfChunks = 0x1f; |
314 | 314 |
315 size_t BlockLength() const; | 315 size_t BlockLength() const; |
316 | 316 |
317 std::vector<Chunk> chunks_; | 317 std::vector<Chunk> chunks_; |
318 | 318 |
319 RTC_DISALLOW_COPY_AND_ASSIGN(Sdes); | 319 RTC_DISALLOW_COPY_AND_ASSIGN(Sdes); |
320 }; | 320 }; |
321 | 321 |
322 // RFC 4585: Feedback format. | |
323 // | |
324 // Common packet format: | |
325 // | |
326 // 0 1 2 3 | |
327 // 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 | |
328 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
329 // |V=2|P| FMT | PT | length | | |
330 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
331 // | SSRC of packet sender | | |
332 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
333 // | SSRC of media source | | |
334 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
335 // : Feedback Control Information (FCI) : | |
336 // : | |
337 | |
338 // Picture loss indication (PLI) (RFC 4585). | |
339 // | |
340 // FCI: no feedback control information. | |
341 | |
342 class Pli : public RtcpPacket { | |
343 public: | |
344 Pli() : RtcpPacket() { | |
345 memset(&pli_, 0, sizeof(pli_)); | |
346 } | |
347 | |
348 virtual ~Pli() {} | |
349 | |
350 void From(uint32_t ssrc) { | |
351 pli_.SenderSSRC = ssrc; | |
352 } | |
353 void To(uint32_t ssrc) { | |
354 pli_.MediaSSRC = ssrc; | |
355 } | |
356 | |
357 protected: | |
358 bool Create(uint8_t* packet, | |
359 size_t* index, | |
360 size_t max_length, | |
361 RtcpPacket::PacketReadyCallback* callback) const override; | |
362 | |
363 private: | |
364 size_t BlockLength() const { | |
365 return kCommonFbFmtLength; | |
366 } | |
367 | |
368 RTCPUtility::RTCPPacketPSFBPLI pli_; | |
369 | |
370 RTC_DISALLOW_COPY_AND_ASSIGN(Pli); | |
371 }; | |
372 | |
373 // Slice loss indication (SLI) (RFC 4585). | 322 // Slice loss indication (SLI) (RFC 4585). |
374 // | 323 // |
375 // FCI: | 324 // FCI: |
376 // 0 1 2 3 | 325 // 0 1 2 3 |
377 // 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 // 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 |
378 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 327 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
379 // | First | Number | PictureID | | 328 // | First | Number | PictureID | |
380 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 329 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
381 | 330 |
382 class Sli : public RtcpPacket { | 331 class Sli : public RtcpPacket { |
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947 | 896 |
948 private: | 897 private: |
949 const size_t buffer_length_; | 898 const size_t buffer_length_; |
950 size_t length_; | 899 size_t length_; |
951 rtc::scoped_ptr<uint8_t[]> buffer_; | 900 rtc::scoped_ptr<uint8_t[]> buffer_; |
952 }; | 901 }; |
953 | 902 |
954 } // namespace rtcp | 903 } // namespace rtcp |
955 } // namespace webrtc | 904 } // namespace webrtc |
956 #endif // WEBRTC_MODULES_RTP_RTCP_RTCP_PACKET_H_ | 905 #endif // WEBRTC_MODULES_RTP_RTCP_RTCP_PACKET_H_ |
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