Delete inter arrival jitter rtcp packet as unused

WebRTC doesn't produces such packet and ignores it when receive.

Bug: None
Change-Id: I4af8cb3308cb2422808bdfc420a85fa175085bfb
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/269181
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37627}

9 files changed, 4 insertions, 261 deletions

diff --git a/logging/rtc_event_log/encoder/rtc_event_log_encoder_legacy.cc b/logging/rtc_event_log/encoder/rtc_event_log_encoder_legacy.cc
index add42ad15b..422e2c4195 100644
--- a/logging/rtc_event_log/encoder/rtc_event_log_encoder_legacy.cc
+++ b/logging/rtc_event_log/encoder/rtc_event_log_encoder_legacy.cc
@@ -44,7 +44,6 @@
 #include "modules/rtp_rtcp/source/rtcp_packet/app.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/bye.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/common_header.h"
-#include "modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/extended_reports.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/psfb.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/receiver_report.h"
@@ -713,15 +712,13 @@ std::string RtcEventLogEncoderLegacy::EncodeRtcpPacket(
     uint32_t block_size = next_block - block_begin;
     switch (header.type()) {
       case rtcp::Bye::kPacketType:
-      case rtcp::ExtendedJitterReport::kPacketType:
       case rtcp::ExtendedReports::kPacketType:
       case rtcp::Psfb::kPacketType:
       case rtcp::ReceiverReport::kPacketType:
       case rtcp::Rtpfb::kPacketType:
       case rtcp::SenderReport::kPacketType:
-        // We log sender reports, receiver reports, bye messages
-        // inter-arrival jitter, third-party loss reports, payload-specific
-        // feedback and extended reports.
+        // We log sender reports, receiver reports, bye messages, third-party
+        // loss reports, payload-specific feedback and extended reports.
         memcpy(buffer.data() + buffer_length, block_begin, block_size);
         buffer_length += block_size;
         break;
diff --git a/logging/rtc_event_log/encoder/rtc_event_log_encoder_new_format.cc b/logging/rtc_event_log/encoder/rtc_event_log_encoder_new_format.cc
index d88f124f9e..9d791d1aca 100644
--- a/logging/rtc_event_log/encoder/rtc_event_log_encoder_new_format.cc
+++ b/logging/rtc_event_log/encoder/rtc_event_log_encoder_new_format.cc
@@ -49,7 +49,6 @@
 #include "modules/rtp_rtcp/source/rtcp_packet/app.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/bye.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/common_header.h"
-#include "modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/extended_reports.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/psfb.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/receiver_report.h"
@@ -306,15 +305,13 @@ size_t RemoveNonAllowlistedRtcpBlocks(const rtc::Buffer& packet,
     size_t block_size = next_block - block_begin;
     switch (header.type()) {
       case rtcp::Bye::kPacketType:
-      case rtcp::ExtendedJitterReport::kPacketType:
       case rtcp::ExtendedReports::kPacketType:
       case rtcp::Psfb::kPacketType:
       case rtcp::ReceiverReport::kPacketType:
       case rtcp::Rtpfb::kPacketType:
       case rtcp::SenderReport::kPacketType:
-        // We log sender reports, receiver reports, bye messages
-        // inter-arrival jitter, third-party loss reports, payload-specific
-        // feedback and extended reports.
+        // We log sender reports, receiver reports, bye messages, third-party
+        // loss reports, payload-specific feedback and extended reports.
         // TODO(terelius): As an optimization, don't copy anything if all blocks
         // in the packet are allowlisted types.
         memcpy(buffer + buffer_length, block_begin, block_size);
diff --git a/modules/rtp_rtcp/BUILD.gn b/modules/rtp_rtcp/BUILD.gn
index b2a01aafac..19dbbabf9c 100644
--- a/modules/rtp_rtcp/BUILD.gn
+++ b/modules/rtp_rtcp/BUILD.gn
@@ -24,7 +24,6 @@ rtc_library("rtp_rtcp_format") {
     "source/rtcp_packet/common_header.h",
     "source/rtcp_packet/compound_packet.h",
     "source/rtcp_packet/dlrr.h",
-    "source/rtcp_packet/extended_jitter_report.h",
     "source/rtcp_packet/extended_reports.h",
     "source/rtcp_packet/fir.h",
     "source/rtcp_packet/loss_notification.h",
@@ -64,7 +63,6 @@ rtc_library("rtp_rtcp_format") {
     "source/rtcp_packet/common_header.cc",
     "source/rtcp_packet/compound_packet.cc",
     "source/rtcp_packet/dlrr.cc",
-    "source/rtcp_packet/extended_jitter_report.cc",
     "source/rtcp_packet/extended_reports.cc",
     "source/rtcp_packet/fir.cc",
     "source/rtcp_packet/loss_notification.cc",
@@ -538,7 +536,6 @@ if (rtc_include_tests) {
       "source/rtcp_packet/common_header_unittest.cc",
       "source/rtcp_packet/compound_packet_unittest.cc",
       "source/rtcp_packet/dlrr_unittest.cc",
-      "source/rtcp_packet/extended_jitter_report_unittest.cc",
       "source/rtcp_packet/extended_reports_unittest.cc",
       "source/rtcp_packet/fir_unittest.cc",
       "source/rtcp_packet/loss_notification_unittest.cc",
diff --git a/modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.cc b/modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.cc
deleted file mode 100644
index 5e7dadd1f4..0000000000
--- a/modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.cc
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- *  Copyright (c) 2015 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.
- */
-
-#include "modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.h"
-
-#include <cstdint>
-#include <utility>
-
-#include "modules/rtp_rtcp/source/byte_io.h"
-#include "modules/rtp_rtcp/source/rtcp_packet/common_header.h"
-#include "rtc_base/checks.h"
-#include "rtc_base/logging.h"
-
-namespace webrtc {
-namespace rtcp {
-constexpr uint8_t ExtendedJitterReport::kPacketType;
-// Transmission Time Offsets in RTP Streams (RFC 5450).
-//
-//      0                   1                   2                   3
-//      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
-//     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-// hdr |V=2|P|    RC   |   PT=IJ=195   |             length            |
-//     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-//     |                      inter-arrival jitter                     |
-//     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-//     .                                                               .
-//     .                                                               .
-//     .                                                               .
-//     |                      inter-arrival jitter                     |
-//     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-//
-//  If present, this RTCP packet must be placed after a receiver report
-//  (inside a compound RTCP packet), and MUST have the same value for RC
-//  (reception report count) as the receiver report.
-
-ExtendedJitterReport::ExtendedJitterReport() = default;
-
-ExtendedJitterReport::~ExtendedJitterReport() = default;
-
-bool ExtendedJitterReport::Parse(const CommonHeader& packet) {
-  RTC_DCHECK_EQ(packet.type(), kPacketType);
-
-  const uint8_t number_of_jitters = packet.count();
-
-  if (packet.payload_size_bytes() < number_of_jitters * kJitterSizeBytes) {
-    RTC_LOG(LS_WARNING) << "Packet is too small to contain all the jitter.";
-    return false;
-  }
-
-  inter_arrival_jitters_.resize(number_of_jitters);
-  for (size_t index = 0; index < number_of_jitters; ++index) {
-    inter_arrival_jitters_[index] = ByteReader<uint32_t>::ReadBigEndian(
-        &packet.payload()[index * kJitterSizeBytes]);
-  }
-
-  return true;
-}
-
-bool ExtendedJitterReport::SetJitterValues(std::vector<uint32_t> values) {
-  if (values.size() > kMaxNumberOfJitterValues) {
-    RTC_LOG(LS_WARNING) << "Too many inter-arrival jitter items.";
-    return false;
-  }
-  inter_arrival_jitters_ = std::move(values);
-  return true;
-}
-
-size_t ExtendedJitterReport::BlockLength() const {
-  return kHeaderLength + kJitterSizeBytes * inter_arrival_jitters_.size();
-}
-
-bool ExtendedJitterReport::Create(uint8_t* packet,
-                                  size_t* index,
-                                  size_t max_length,
-                                  PacketReadyCallback callback) const {
-  while (*index + BlockLength() > max_length) {
-    if (!OnBufferFull(packet, index, callback))
-      return false;
-  }
-  const size_t index_end = *index + BlockLength();
-  size_t length = inter_arrival_jitters_.size();
-  CreateHeader(length, kPacketType, length, packet, index);
-
-  for (uint32_t jitter : inter_arrival_jitters_) {
-    ByteWriter<uint32_t>::WriteBigEndian(packet + *index, jitter);
-    *index += kJitterSizeBytes;
-  }
-  // Sanity check.
-  RTC_DCHECK_EQ(index_end, *index);
-  return true;
-}
-
-}  // namespace rtcp
-}  // namespace webrtc
diff --git a/modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.h b/modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.h
deleted file mode 100644
index c28b9d9dbd..0000000000
--- a/modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- *  Copyright (c) 2015 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 MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_EXTENDED_JITTER_REPORT_H_
-#define MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_EXTENDED_JITTER_REPORT_H_
-
-#include <vector>
-
-#include "modules/rtp_rtcp/source/rtcp_packet.h"
-
-namespace webrtc {
-namespace rtcp {
-class CommonHeader;
-
-class ExtendedJitterReport : public RtcpPacket {
- public:
-  static constexpr uint8_t kPacketType = 195;
-  static constexpr size_t kMaxNumberOfJitterValues = 0x1f;
-
-  ExtendedJitterReport();
-  ~ExtendedJitterReport() override;
-
-  // Parse assumes header is already parsed and validated.
-  bool Parse(const CommonHeader& packet);
-
-  bool SetJitterValues(std::vector<uint32_t> jitter_values);
-
-  const std::vector<uint32_t>& jitter_values() {
-    return inter_arrival_jitters_;
-  }
-
-  size_t BlockLength() const override;
-
-  bool Create(uint8_t* packet,
-              size_t* index,
-              size_t max_length,
-              PacketReadyCallback callback) const override;
-
- private:
-  static constexpr size_t kJitterSizeBytes = 4;
-
-  std::vector<uint32_t> inter_arrival_jitters_;
-};
-
-}  // namespace rtcp
-}  // namespace webrtc
-#endif  // MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_EXTENDED_JITTER_REPORT_H_
diff --git a/modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report_unittest.cc b/modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report_unittest.cc
deleted file mode 100644
index 3fd7d20397..0000000000
--- a/modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report_unittest.cc
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- *  Copyright (c) 2015 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.
- */
-
-#include "modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.h"
-
-#include "test/gmock.h"
-#include "test/gtest.h"
-#include "test/rtcp_packet_parser.h"
-
-using ::testing::ElementsAre;
-using ::testing::IsEmpty;
-using webrtc::rtcp::ExtendedJitterReport;
-
-namespace webrtc {
-namespace {
-constexpr uint32_t kJitter1 = 0x11121314;
-constexpr uint32_t kJitter2 = 0x22242628;
-}  // namespace
-
-TEST(RtcpPacketExtendedJitterReportTest, CreateAndParseWithoutItems) {
-  ExtendedJitterReport ij;
-  rtc::Buffer raw = ij.Build();
-
-  ExtendedJitterReport parsed;
-  EXPECT_TRUE(test::ParseSinglePacket(raw, &parsed));
-
-  EXPECT_THAT(parsed.jitter_values(), IsEmpty());
-}
-
-TEST(RtcpPacketExtendedJitterReportTest, CreateAndParseWithOneItem) {
-  ExtendedJitterReport ij;
-  EXPECT_TRUE(ij.SetJitterValues({kJitter1}));
-  rtc::Buffer raw = ij.Build();
-
-  ExtendedJitterReport parsed;
-  EXPECT_TRUE(test::ParseSinglePacket(raw, &parsed));
-
-  EXPECT_THAT(parsed.jitter_values(), ElementsAre(kJitter1));
-}
-
-TEST(RtcpPacketExtendedJitterReportTest, CreateAndParseWithTwoItems) {
-  ExtendedJitterReport ij;
-  EXPECT_TRUE(ij.SetJitterValues({kJitter1, kJitter2}));
-  rtc::Buffer raw = ij.Build();
-
-  ExtendedJitterReport parsed;
-  EXPECT_TRUE(test::ParseSinglePacket(raw, &parsed));
-
-  EXPECT_THAT(parsed.jitter_values(), ElementsAre(kJitter1, kJitter2));
-}
-
-TEST(RtcpPacketExtendedJitterReportTest, CreateWithTooManyItems) {
-  ExtendedJitterReport ij;
-  const int kMaxItems = ExtendedJitterReport::kMaxNumberOfJitterValues;
-  EXPECT_FALSE(
-      ij.SetJitterValues(std::vector<uint32_t>(kMaxItems + 1, kJitter1)));
-  EXPECT_TRUE(ij.SetJitterValues(std::vector<uint32_t>(kMaxItems, kJitter1)));
-}
-
-TEST(RtcpPacketExtendedJitterReportTest, ParseFailsWithTooManyItems) {
-  ExtendedJitterReport ij;
-  ij.SetJitterValues({kJitter1});
-  rtc::Buffer raw = ij.Build();
-  raw[0]++;  // Damage packet: increase jitter count by 1.
-  ExtendedJitterReport parsed;
-  EXPECT_FALSE(test::ParseSinglePacket(raw, &parsed));
-}
-
-}  // namespace webrtc
diff --git a/modules/rtp_rtcp/source/rtcp_receiver_unittest.cc b/modules/rtp_rtcp/source/rtcp_receiver_unittest.cc
index a3446c43f0..ff39ccca9c 100644
--- a/modules/rtp_rtcp/source/rtcp_receiver_unittest.cc
+++ b/modules/rtp_rtcp/source/rtcp_receiver_unittest.cc
@@ -26,7 +26,6 @@
 #include "modules/rtp_rtcp/source/rtcp_packet/app.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/bye.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/compound_packet.h"
-#include "modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/extended_reports.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/fir.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/nack.h"
@@ -593,16 +592,6 @@ TEST(RtcpReceiverTest, GetRtt) {
   EXPECT_EQ(0, receiver.RTT(kSenderSsrc, nullptr, nullptr, nullptr, nullptr));
 }
 
-// Ij packets are ignored.
-TEST(RtcpReceiverTest, InjectIjWithNoItem) {
-  ReceiverMocks mocks;
-  RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
-  receiver.SetRemoteSSRC(kSenderSsrc);
-
-  rtcp::ExtendedJitterReport ij;
-  receiver.IncomingPacket(ij.Build());
-}
-
 // App packets are ignored.
 TEST(RtcpReceiverTest, InjectApp) {
   ReceiverMocks mocks;
diff --git a/test/rtcp_packet_parser.cc b/test/rtcp_packet_parser.cc
index 94f500fe57..e286ec5a36 100644
--- a/test/rtcp_packet_parser.cc
+++ b/test/rtcp_packet_parser.cc
@@ -47,9 +47,6 @@ bool RtcpPacketParser::Parse(const void* data, size_t length) {
       case rtcp::ExtendedReports::kPacketType:
         xr_.Parse(header, &sender_ssrc_);
         break;
-      case rtcp::ExtendedJitterReport::kPacketType:
-        ij_.Parse(header);
-        break;
       case rtcp::Psfb::kPacketType:
         switch (header.fmt()) {
           case rtcp::Fir::kFeedbackMessageType:
diff --git a/test/rtcp_packet_parser.h b/test/rtcp_packet_parser.h
index 4916195822..9e8c9685e9 100644
--- a/test/rtcp_packet_parser.h
+++ b/test/rtcp_packet_parser.h
@@ -19,7 +19,6 @@
 #include "modules/rtp_rtcp/source/rtcp_packet/app.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/bye.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/common_header.h"
-#include "modules/rtp_rtcp/source/rtcp_packet/extended_jitter_report.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/extended_reports.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/fir.h"
 #include "modules/rtp_rtcp/source/rtcp_packet/loss_notification.h"
@@ -84,7 +83,6 @@ class RtcpPacketParser {
 
   PacketCounter<rtcp::App>* app() { return &app_; }
   PacketCounter<rtcp::Bye>* bye() { return &bye_; }
-  PacketCounter<rtcp::ExtendedJitterReport>* ij() { return &ij_; }
   PacketCounter<rtcp::ExtendedReports>* xr() { return &xr_; }
   PacketCounter<rtcp::Fir>* fir() { return &fir_; }
   PacketCounter<rtcp::Nack>* nack() { return &nack_; }
@@ -110,7 +108,6 @@ class RtcpPacketParser {
  private:
   PacketCounter<rtcp::App> app_;
   PacketCounter<rtcp::Bye> bye_;
-  PacketCounter<rtcp::ExtendedJitterReport> ij_;
   PacketCounter<rtcp::ExtendedReports> xr_;
   PacketCounter<rtcp::Fir> fir_;
   PacketCounter<rtcp::Nack> nack_;