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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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472 const size_t kFciLen = 8; | 472 const size_t kFciLen = 8; |
473 return kCommonFbFmtLength + kFciLen; | 473 return kCommonFbFmtLength + kFciLen; |
474 } | 474 } |
475 | 475 |
476 RTCPUtility::RTCPPacketRTPFBTMMBR tmmbr_; | 476 RTCPUtility::RTCPPacketRTPFBTMMBR tmmbr_; |
477 RTCPUtility::RTCPPacketRTPFBTMMBRItem tmmbr_item_; | 477 RTCPUtility::RTCPPacketRTPFBTMMBRItem tmmbr_item_; |
478 | 478 |
479 RTC_DISALLOW_COPY_AND_ASSIGN(Tmmbr); | 479 RTC_DISALLOW_COPY_AND_ASSIGN(Tmmbr); |
480 }; | 480 }; |
481 | 481 |
482 // Temporary Maximum Media Stream Bit Rate Notification (TMMBN) (RFC 5104). | |
483 // | |
484 // FCI: | |
485 // | |
486 // 0 1 2 3 | |
487 // 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 | |
488 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
489 // | SSRC | | |
490 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
491 // | MxTBR Exp | MxTBR Mantissa |Measured Overhead| | |
492 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
493 | |
494 class Tmmbn : public RtcpPacket { | |
495 public: | |
496 Tmmbn() : RtcpPacket() { | |
497 memset(&tmmbn_, 0, sizeof(tmmbn_)); | |
498 } | |
499 | |
500 virtual ~Tmmbn() {} | |
501 | |
502 void From(uint32_t ssrc) { | |
503 tmmbn_.SenderSSRC = ssrc; | |
504 } | |
505 // Max 50 TMMBR can be added per TMMBN. | |
506 bool WithTmmbr(uint32_t ssrc, uint32_t bitrate_kbps, uint16_t overhead); | |
507 | |
508 protected: | |
509 bool Create(uint8_t* packet, | |
510 size_t* index, | |
511 size_t max_length, | |
512 RtcpPacket::PacketReadyCallback* callback) const override; | |
513 | |
514 private: | |
515 static const int kMaxNumberOfTmmbrs = 50; | |
516 | |
517 size_t BlockLength() const { | |
518 const size_t kFciLen = 8; | |
519 return kCommonFbFmtLength + kFciLen * tmmbn_items_.size(); | |
520 } | |
521 | |
522 RTCPUtility::RTCPPacketRTPFBTMMBN tmmbn_; | |
523 std::vector<RTCPUtility::RTCPPacketRTPFBTMMBRItem> tmmbn_items_; | |
524 | |
525 RTC_DISALLOW_COPY_AND_ASSIGN(Tmmbn); | |
526 }; | |
527 | |
528 // Receiver Estimated Max Bitrate (REMB) (draft-alvestrand-rmcat-remb). | 482 // Receiver Estimated Max Bitrate (REMB) (draft-alvestrand-rmcat-remb). |
529 // | 483 // |
530 // 0 1 2 3 | 484 // 0 1 2 3 |
531 // 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 | 485 // 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 |
532 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 486 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
533 // |V=2|P| FMT=15 | PT=206 | length | | 487 // |V=2|P| FMT=15 | PT=206 | length | |
534 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 488 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
535 // | SSRC of packet sender | | 489 // | SSRC of packet sender | |
536 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 490 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
537 // | SSRC of media source | | 491 // | SSRC of media source | |
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667 | 621 |
668 private: | 622 private: |
669 const size_t buffer_length_; | 623 const size_t buffer_length_; |
670 size_t length_; | 624 size_t length_; |
671 rtc::scoped_ptr<uint8_t[]> buffer_; | 625 rtc::scoped_ptr<uint8_t[]> buffer_; |
672 }; | 626 }; |
673 | 627 |
674 } // namespace rtcp | 628 } // namespace rtcp |
675 } // namespace webrtc | 629 } // namespace webrtc |
676 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_H_ | 630 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_H_ |
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