Remove rtcp_utility as mostly unused.

webrtc/modules/rtp_rtcp/source/rtcp_utility.h

Index: webrtc/modules/rtp_rtcp/source/rtcp_utility.h
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_utility.h b/webrtc/modules/rtp_rtcp/source/rtcp_utility.h
deleted file mode 100644
index 86fee8ea681af8182f7f20761445429086136b22..0000000000000000000000000000000000000000
--- a/webrtc/modules/rtp_rtcp/source/rtcp_utility.h
+++ /dev/null
@@ -1,490 +0,0 @@
-/*
-*  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
-*
-*  Use of this source code is governed by a BSD-style license
-*  that can be found in the LICENSE file in the root of the source
-*  tree. An additional intellectual property rights grant can be found
-*  in the file PATENTS.  All contributing project authors may
-*  be found in the AUTHORS file in the root of the source tree.
-*/
-
-#ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_UTILITY_H_
-#define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_UTILITY_H_
-
-#include <stddef.h> // size_t, ptrdiff_t
-
-#include <memory>
-
-#include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
-#include "webrtc/modules/rtp_rtcp/source/rtp_rtcp_config.h"
-#include "webrtc/typedefs.h"
-
-namespace webrtc {
-namespace rtcp {
-class RtcpPacket;
-}
-namespace RTCPUtility {
-
-class NackStats {
- public:
-  NackStats();
-  ~NackStats();
-
-  // Updates stats with requested sequence number.
-  // This function should be called for each NACK request to calculate the
-  // number of unique NACKed RTP packets.
-  void ReportRequest(uint16_t sequence_number);
-
-  // Gets the number of NACKed RTP packets.
-  uint32_t requests() const { return requests_; }
-
-  // Gets the number of unique NACKed RTP packets.
-  uint32_t unique_requests() const { return unique_requests_; }
-
- private:
-  uint16_t max_sequence_number_;
-  uint32_t requests_;
-  uint32_t unique_requests_;
-};
-
-uint32_t MidNtp(uint32_t ntp_sec, uint32_t ntp_frac);
-
-struct RTCPPacketRR {
-  uint32_t SenderSSRC;
-  uint8_t NumberOfReportBlocks;
-};
-struct RTCPPacketSR {
-  uint32_t SenderSSRC;
-  uint8_t NumberOfReportBlocks;
-
-  // sender info
-  uint32_t NTPMostSignificant;
-  uint32_t NTPLeastSignificant;
-  uint32_t RTPTimestamp;
-  uint32_t SenderPacketCount;
-  uint32_t SenderOctetCount;
-};
-struct RTCPPacketReportBlockItem {
-  // report block
-  uint32_t SSRC;
-  uint8_t FractionLost;
-  uint32_t CumulativeNumOfPacketsLost;
-  uint32_t ExtendedHighestSequenceNumber;
-  uint32_t Jitter;
-  uint32_t LastSR;
-  uint32_t DelayLastSR;
-};
-struct RTCPPacketSDESCName {
-  // RFC3550
-  uint32_t SenderSSRC;
-  char CName[RTCP_CNAME_SIZE];
-};
-
-struct RTCPPacketExtendedJitterReportItem {
-  // RFC 5450
-  uint32_t Jitter;
-};
-
-struct RTCPPacketBYE {
-  uint32_t SenderSSRC;
-};
-struct RTCPPacketXR {
-  // RFC 3611
-  uint32_t OriginatorSSRC;
-};
-struct RTCPPacketXRReceiverReferenceTimeItem {
-  // RFC 3611 4.4
-  uint32_t NTPMostSignificant;
-  uint32_t NTPLeastSignificant;
-};
-struct RTCPPacketXRDLRRReportBlockItem {
-  // RFC 3611 4.5
-  uint32_t SSRC;
-  uint32_t LastRR;
-  uint32_t DelayLastRR;
-};
-struct RTCPPacketXRVOIPMetricItem {
-  // RFC 3611 4.7
-  uint32_t SSRC;
-  uint8_t lossRate;
-  uint8_t discardRate;
-  uint8_t burstDensity;
-  uint8_t gapDensity;
-  uint16_t burstDuration;
-  uint16_t gapDuration;
-  uint16_t roundTripDelay;
-  uint16_t endSystemDelay;
-  uint8_t signalLevel;
-  uint8_t noiseLevel;
-  uint8_t RERL;
-  uint8_t Gmin;
-  uint8_t Rfactor;
-  uint8_t extRfactor;
-  uint8_t MOSLQ;
-  uint8_t MOSCQ;
-  uint8_t RXconfig;
-  uint16_t JBnominal;
-  uint16_t JBmax;
-  uint16_t JBabsMax;
-};
-
-struct RTCPPacketRTPFBNACK {
-  uint32_t SenderSSRC;
-  uint32_t MediaSSRC;
-};
-struct RTCPPacketRTPFBNACKItem {
-  // RFC4585
-  uint16_t PacketID;
-  uint16_t BitMask;
-};
-
-struct RTCPPacketRTPFBTMMBR {
-  uint32_t SenderSSRC;
-  uint32_t MediaSSRC;  // zero!
-};
-struct RTCPPacketRTPFBTMMBRItem {
-  // RFC5104
-  uint32_t SSRC;
-  uint32_t MaxTotalMediaBitRate;  // In Kbit/s
-  uint32_t MeasuredOverhead;
-};
-
-struct RTCPPacketRTPFBTMMBN {
-  uint32_t SenderSSRC;
-  uint32_t MediaSSRC;  // zero!
-};
-struct RTCPPacketRTPFBTMMBNItem {
-  // RFC5104
-  uint32_t SSRC;  // "Owner"
-  uint32_t MaxTotalMediaBitRate;
-  uint32_t MeasuredOverhead;
-};
-
-struct RTCPPacketPSFBFIR {
-  uint32_t SenderSSRC;
-  uint32_t MediaSSRC;  // zero!
-};
-struct RTCPPacketPSFBFIRItem {
-  // RFC5104
-  uint32_t SSRC;
-  uint8_t CommandSequenceNumber;
-};
-
-struct RTCPPacketPSFBPLI {
-  // RFC4585
-  uint32_t SenderSSRC;
-  uint32_t MediaSSRC;
-};
-
-struct RTCPPacketPSFBSLI {
-  // RFC4585
-  uint32_t SenderSSRC;
-  uint32_t MediaSSRC;
-};
-struct RTCPPacketPSFBSLIItem {
-  // RFC4585
-  uint16_t FirstMB;
-  uint16_t NumberOfMB;
-  uint8_t PictureId;
-};
-struct RTCPPacketPSFBRPSI {
-  // RFC4585
-  uint32_t SenderSSRC;
-  uint32_t MediaSSRC;
-  uint8_t PayloadType;
-  uint16_t NumberOfValidBits;
-  uint8_t NativeBitString[RTCP_RPSI_DATA_SIZE];
-};
-struct RTCPPacketPSFBAPP {
-  uint32_t SenderSSRC;
-  uint32_t MediaSSRC;
-};
-struct RTCPPacketPSFBREMBItem {
-  uint32_t BitRate;
-  uint8_t NumberOfSSRCs;
-  uint32_t SSRCs[MAX_NUMBER_OF_REMB_FEEDBACK_SSRCS];
-};
-// generic name APP
-struct RTCPPacketAPP {
-  uint8_t SubType;
-  uint32_t Name;
-  uint8_t Data[kRtcpAppCode_DATA_SIZE];
-  uint16_t Size;
-};
-
-union RTCPPacket {
-  RTCPPacketRR RR;
-  RTCPPacketSR SR;
-  RTCPPacketReportBlockItem ReportBlockItem;
-
-  RTCPPacketSDESCName CName;
-  RTCPPacketBYE BYE;
-
-  RTCPPacketExtendedJitterReportItem ExtendedJitterReportItem;
-
-  RTCPPacketRTPFBNACK NACK;
-  RTCPPacketRTPFBNACKItem NACKItem;
-
-  RTCPPacketPSFBPLI PLI;
-  RTCPPacketPSFBSLI SLI;
-  RTCPPacketPSFBSLIItem SLIItem;
-  RTCPPacketPSFBRPSI RPSI;
-  RTCPPacketPSFBAPP PSFBAPP;
-  RTCPPacketPSFBREMBItem REMBItem;
-
-  RTCPPacketRTPFBTMMBR TMMBR;
-  RTCPPacketRTPFBTMMBRItem TMMBRItem;
-  RTCPPacketRTPFBTMMBN TMMBN;
-  RTCPPacketRTPFBTMMBNItem TMMBNItem;
-  RTCPPacketPSFBFIR FIR;
-  RTCPPacketPSFBFIRItem FIRItem;
-
-  RTCPPacketXR XR;
-  RTCPPacketXRReceiverReferenceTimeItem XRReceiverReferenceTimeItem;
-  RTCPPacketXRDLRRReportBlockItem XRDLRRReportBlockItem;
-  RTCPPacketXRVOIPMetricItem XRVOIPMetricItem;
-
-  RTCPPacketAPP APP;
-};
-
-enum class RTCPPacketTypes {
-  kInvalid,
-
-  // RFC3550
-  kRr,
-  kSr,
-  kReportBlockItem,
-
-  kSdes,
-  kSdesChunk,
-  kBye,
-
-  // RFC5450
-  kExtendedIj,
-  kExtendedIjItem,
-
-  // RFC4585
-  kRtpfbNack,
-  kRtpfbNackItem,
-
-  kPsfbPli,
-  kPsfbRpsi,
-  kPsfbRpsiItem,
-  kPsfbSli,
-  kPsfbSliItem,
-  kPsfbApp,
-  kPsfbRemb,
-  kPsfbRembItem,
-
-  // RFC5104
-  kRtpfbTmmbr,
-  kRtpfbTmmbrItem,
-  kRtpfbTmmbn,
-  kRtpfbTmmbnItem,
-  kPsfbFir,
-  kPsfbFirItem,
-
-  // draft-perkins-avt-rapid-rtp-sync
-  kRtpfbSrReq,
-
-  // RFC 3611
-  kXrHeader,
-  kXrReceiverReferenceTime,
-  kXrDlrrReportBlock,
-  kXrDlrrReportBlockItem,
-  kXrVoipMetric,
-
-  kApp,
-  kAppItem,
-
-  // draft-holmer-rmcat-transport-wide-cc-extensions
-  kTransportFeedback,
-};
-
-struct RTCPRawPacket {
-  const uint8_t* _ptrPacketBegin;
-  const uint8_t* _ptrPacketEnd;
-};
-
-struct RTCPModRawPacket {
-  uint8_t* _ptrPacketBegin;
-  uint8_t* _ptrPacketEnd;
-};
-
-struct RtcpCommonHeader {
-  static const uint8_t kHeaderSizeBytes = 4;
-  RtcpCommonHeader()
-      : version(2),
-        count_or_format(0),
-        packet_type(0),
-        payload_size_bytes(0),
-        padding_bytes(0) {}
-
-  uint32_t BlockSize() const {
-    return kHeaderSizeBytes + payload_size_bytes + padding_bytes;
-  }
-
-  uint8_t version;
-  uint8_t count_or_format;
-  uint8_t packet_type;
-  uint32_t payload_size_bytes;
-  uint8_t padding_bytes;
-};
-
-enum RTCPPT : uint8_t {
-  PT_IJ = 195,
-  PT_SR = 200,
-  PT_RR = 201,
-  PT_SDES = 202,
-  PT_BYE = 203,
-  PT_APP = 204,
-  PT_RTPFB = 205,
-  PT_PSFB = 206,
-  PT_XR = 207
-};
-
-// Extended report blocks, RFC 3611.
-enum RtcpXrBlockType : uint8_t {
-  kBtReceiverReferenceTime = 4,
-  kBtDlrr = 5,
-  kBtVoipMetric = 7
-};
-
-bool RtcpParseCommonHeader(const uint8_t* buffer,
-                           size_t size_bytes,
-                           RtcpCommonHeader* parsed_header);
-
-class RTCPParserV2 {
- public:
-  RTCPParserV2(
-      const uint8_t* rtcpData,
-      size_t rtcpDataLength,
-      bool rtcpReducedSizeEnable);  // Set to true, to allow non-compound RTCP!
-  ~RTCPParserV2();
-
-  RTCPPacketTypes PacketType() const;
-  const RTCPPacket& Packet() const;
-  rtcp::RtcpPacket* ReleaseRtcpPacket();
-  const RTCPRawPacket& RawPacket() const;
-  ptrdiff_t LengthLeft() const;
-
-  bool IsValid() const;
-  size_t NumSkippedBlocks() const;
-
-  RTCPPacketTypes Begin();
-  RTCPPacketTypes Iterate();
-
- private:
-  enum class ParseState {
-    State_TopLevel,            // Top level packet
-    State_ReportBlockItem,     // SR/RR report block
-    State_SDESChunk,           // SDES chunk
-    State_BYEItem,             // BYE item
-    State_ExtendedJitterItem,  // Extended jitter report item
-    State_RTPFB_NACKItem,      // NACK FCI item
-    State_RTPFB_TMMBRItem,     // TMMBR FCI item
-    State_RTPFB_TMMBNItem,     // TMMBN FCI item
-    State_PSFB_SLIItem,        // SLI FCI item
-    State_PSFB_RPSIItem,       // RPSI FCI item
-    State_PSFB_FIRItem,        // FIR FCI item
-    State_PSFB_AppItem,        // Application specific FCI item
-    State_PSFB_REMBItem,       // Application specific REMB item
-    State_XRItem,
-    State_XR_DLLRItem,
-    State_AppItem
-  };
-
- private:
-  void IterateTopLevel();
-  void IterateReportBlockItem();
-  void IterateSDESChunk();
-  void IterateBYEItem();
-  void IterateExtendedJitterItem();
-  void IterateNACKItem();
-  void IterateTMMBRItem();
-  void IterateTMMBNItem();
-  void IterateSLIItem();
-  void IterateRPSIItem();
-  void IterateFIRItem();
-  void IteratePsfbAppItem();
-  void IteratePsfbREMBItem();
-  void IterateAppItem();
-  void IterateXrItem();
-  void IterateXrDlrrItem();
-
-  void Validate();
-  void EndCurrentBlock();
-
-  bool ParseRR();
-  bool ParseSR();
-  bool ParseReportBlockItem();
-
-  bool ParseSDES();
-  bool ParseSDESChunk();
-  bool ParseSDESItem();
-
-  bool ParseBYE();
-  bool ParseBYEItem();
-
-  bool ParseIJ();
-  bool ParseIJItem();
-
-  bool ParseXr();
-  bool ParseXrItem();
-  bool ParseXrReceiverReferenceTimeItem(int block_length_4bytes);
-  bool ParseXrDlrr(int block_length_4bytes);
-  bool ParseXrDlrrItem();
-  bool ParseXrVoipMetricItem(int block_length_4bytes);
-  bool ParseXrUnsupportedBlockType(int block_length_4bytes);
-
-  bool ParseFBCommon(const RtcpCommonHeader& header);
-  bool ParseNACKItem();
-  bool ParseTMMBRItem();
-  bool ParseTMMBNItem();
-  bool ParseSLIItem();
-  bool ParseRPSIItem();
-  bool ParseFIRItem();
-  bool ParsePsfbAppItem();
-  bool ParsePsfbREMBItem();
-
-  bool ParseAPP(const RtcpCommonHeader& header);
-  bool ParseAPPItem();
-
- private:
-  const uint8_t* const _ptrRTCPDataBegin;
-  const bool _RTCPReducedSizeEnable;
-  const uint8_t* const _ptrRTCPDataEnd;
-
-  bool _validPacket;
-  const uint8_t* _ptrRTCPData;
-  const uint8_t* _ptrRTCPBlockEnd;
-
-  ParseState _state;
-  uint8_t _numberOfBlocks;
-  size_t num_skipped_blocks_;
-
-  RTCPPacketTypes _packetType;
-  RTCPPacket _packet;
-  std::unique_ptr<webrtc::rtcp::RtcpPacket> rtcp_packet_;
-};
-
-class RTCPPacketIterator {
- public:
-  RTCPPacketIterator(uint8_t* rtcpData, size_t rtcpDataLength);
-  ~RTCPPacketIterator();
-
-  const RtcpCommonHeader* Begin();
-  const RtcpCommonHeader* Iterate();
-  const RtcpCommonHeader* Current();
-
- private:
-  uint8_t* const _ptrBegin;
-  uint8_t* const _ptrEnd;
-
-  uint8_t* _ptrBlock;
-
-  RtcpCommonHeader _header;
-};
-}  // namespace RTCPUtility
-}  // namespace webrtc
-#endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_UTILITY_H_