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| 1 /* | 1 /* |
| 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 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 |
| 11 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_UTILITY_H_ | 11 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_UTILITY_H_ |
| 12 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_UTILITY_H_ | 12 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_UTILITY_H_ |
| 13 | 13 |
| 14 #include <stddef.h> // size_t, ptrdiff_t | 14 #include <stddef.h> // size_t, ptrdiff_t |
| 15 | 15 |
| 16 #include "webrtc/base/scoped_ptr.h" | |
| 17 #include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp_defines.h" | 16 #include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp_defines.h" |
| 18 #include "webrtc/modules/rtp_rtcp/source/rtp_rtcp_config.h" | 17 #include "webrtc/modules/rtp_rtcp/source/rtp_rtcp_config.h" |
| 19 #include "webrtc/typedefs.h" | 18 #include "webrtc/typedefs.h" |
| 20 | 19 |
| 21 namespace webrtc { | 20 namespace webrtc { |
| 22 namespace rtcp { | |
| 23 class RtcpPacket; | |
| 24 } | |
| 25 namespace RTCPUtility { | 21 namespace RTCPUtility { |
| 26 | 22 |
| 27 class NackStats { | 23 class NackStats { |
| 28 public: | 24 public: |
| 29 NackStats(); | 25 NackStats(); |
| 30 ~NackStats(); | 26 ~NackStats(); |
| 31 | 27 |
| 32 // Updates stats with requested sequence number. | 28 // Updates stats with requested sequence number. |
| 33 // This function should be called for each NACK request to calculate the | 29 // This function should be called for each NACK request to calculate the |
| 34 // number of unique NACKed RTP packets. | 30 // number of unique NACKed RTP packets. |
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| 291 | 287 |
| 292 // RFC 3611 | 288 // RFC 3611 |
| 293 kXrHeader, | 289 kXrHeader, |
| 294 kXrReceiverReferenceTime, | 290 kXrReceiverReferenceTime, |
| 295 kXrDlrrReportBlock, | 291 kXrDlrrReportBlock, |
| 296 kXrDlrrReportBlockItem, | 292 kXrDlrrReportBlockItem, |
| 297 kXrVoipMetric, | 293 kXrVoipMetric, |
| 298 | 294 |
| 299 kApp, | 295 kApp, |
| 300 kAppItem, | 296 kAppItem, |
| 301 | |
| 302 // draft-holmer-rmcat-transport-wide-cc-extensions | |
| 303 kTransportFeedback, | |
| 304 }; | 297 }; |
| 305 | 298 |
| 306 struct RTCPRawPacket { | 299 struct RTCPRawPacket { |
| 307 const uint8_t* _ptrPacketBegin; | 300 const uint8_t* _ptrPacketBegin; |
| 308 const uint8_t* _ptrPacketEnd; | 301 const uint8_t* _ptrPacketEnd; |
| 309 }; | 302 }; |
| 310 | 303 |
| 311 struct RTCPModRawPacket { | 304 struct RTCPModRawPacket { |
| 312 uint8_t* _ptrPacketBegin; | 305 uint8_t* _ptrPacketBegin; |
| 313 uint8_t* _ptrPacketEnd; | 306 uint8_t* _ptrPacketEnd; |
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| 359 class RTCPParserV2 { | 352 class RTCPParserV2 { |
| 360 public: | 353 public: |
| 361 RTCPParserV2( | 354 RTCPParserV2( |
| 362 const uint8_t* rtcpData, | 355 const uint8_t* rtcpData, |
| 363 size_t rtcpDataLength, | 356 size_t rtcpDataLength, |
| 364 bool rtcpReducedSizeEnable); // Set to true, to allow non-compound RTCP! | 357 bool rtcpReducedSizeEnable); // Set to true, to allow non-compound RTCP! |
| 365 ~RTCPParserV2(); | 358 ~RTCPParserV2(); |
| 366 | 359 |
| 367 RTCPPacketTypes PacketType() const; | 360 RTCPPacketTypes PacketType() const; |
| 368 const RTCPPacket& Packet() const; | 361 const RTCPPacket& Packet() const; |
| 369 rtcp::RtcpPacket* ReleaseRtcpPacket(); | |
| 370 const RTCPRawPacket& RawPacket() const; | 362 const RTCPRawPacket& RawPacket() const; |
| 371 ptrdiff_t LengthLeft() const; | 363 ptrdiff_t LengthLeft() const; |
| 372 | 364 |
| 373 bool IsValid() const; | 365 bool IsValid() const; |
| 374 size_t NumSkippedBlocks() const; | |
| 375 | 366 |
| 376 RTCPPacketTypes Begin(); | 367 RTCPPacketTypes Begin(); |
| 377 RTCPPacketTypes Iterate(); | 368 RTCPPacketTypes Iterate(); |
| 378 | 369 |
| 379 private: | 370 private: |
| 380 enum class ParseState { | 371 enum class ParseState { |
| 381 State_TopLevel, // Top level packet | 372 State_TopLevel, // Top level packet |
| 382 State_ReportBlockItem, // SR/RR report block | 373 State_ReportBlockItem, // SR/RR report block |
| 383 State_SDESChunk, // SDES chunk | 374 State_SDESChunk, // SDES chunk |
| 384 State_BYEItem, // BYE item | 375 State_BYEItem, // BYE item |
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| 456 const uint8_t* const _ptrRTCPDataBegin; | 447 const uint8_t* const _ptrRTCPDataBegin; |
| 457 const bool _RTCPReducedSizeEnable; | 448 const bool _RTCPReducedSizeEnable; |
| 458 const uint8_t* const _ptrRTCPDataEnd; | 449 const uint8_t* const _ptrRTCPDataEnd; |
| 459 | 450 |
| 460 bool _validPacket; | 451 bool _validPacket; |
| 461 const uint8_t* _ptrRTCPData; | 452 const uint8_t* _ptrRTCPData; |
| 462 const uint8_t* _ptrRTCPBlockEnd; | 453 const uint8_t* _ptrRTCPBlockEnd; |
| 463 | 454 |
| 464 ParseState _state; | 455 ParseState _state; |
| 465 uint8_t _numberOfBlocks; | 456 uint8_t _numberOfBlocks; |
| 466 size_t num_skipped_blocks_; | |
| 467 | 457 |
| 468 RTCPPacketTypes _packetType; | 458 RTCPPacketTypes _packetType; |
| 469 RTCPPacket _packet; | 459 RTCPPacket _packet; |
| 470 rtc::scoped_ptr<webrtc::rtcp::RtcpPacket> rtcp_packet_; | |
| 471 }; | 460 }; |
| 472 | 461 |
| 473 class RTCPPacketIterator { | 462 class RTCPPacketIterator { |
| 474 public: | 463 public: |
| 475 RTCPPacketIterator(uint8_t* rtcpData, size_t rtcpDataLength); | 464 RTCPPacketIterator(uint8_t* rtcpData, size_t rtcpDataLength); |
| 476 ~RTCPPacketIterator(); | 465 ~RTCPPacketIterator(); |
| 477 | 466 |
| 478 const RtcpCommonHeader* Begin(); | 467 const RtcpCommonHeader* Begin(); |
| 479 const RtcpCommonHeader* Iterate(); | 468 const RtcpCommonHeader* Iterate(); |
| 480 const RtcpCommonHeader* Current(); | 469 const RtcpCommonHeader* Current(); |
| 481 | 470 |
| 482 private: | 471 private: |
| 483 uint8_t* const _ptrBegin; | 472 uint8_t* const _ptrBegin; |
| 484 uint8_t* const _ptrEnd; | 473 uint8_t* const _ptrEnd; |
| 485 | 474 |
| 486 uint8_t* _ptrBlock; | 475 uint8_t* _ptrBlock; |
| 487 | 476 |
| 488 RtcpCommonHeader _header; | 477 RtcpCommonHeader _header; |
| 489 }; | 478 }; |
| 490 } // RTCPUtility | 479 } // RTCPUtility |
| 491 } // namespace webrtc | 480 } // namespace webrtc |
| 492 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_UTILITY_H_ | 481 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_UTILITY_H_ |
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