niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1 | /* |
pwestin@webrtc.org | f6bb77a | 2012-01-24 17:16:59 +0000 | [diff] [blame] | 2 | * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 3 | * |
| 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 |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 11 | #include "modules/rtp_rtcp/source/rtp_utility.h" |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 12 | |
Yves Gerey | 988cc08 | 2018-10-23 12:03:01 +0200 | [diff] [blame] | 13 | #include <assert.h> |
| 14 | #include <stddef.h> |
| 15 | |
| 16 | #include "api/array_view.h" |
| 17 | #include "api/video/video_content_type.h" |
| 18 | #include "api/video/video_frame_marking.h" |
| 19 | #include "api/video/video_rotation.h" |
| 20 | #include "api/video/video_timing.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 21 | #include "modules/rtp_rtcp/include/rtp_cvo.h" |
| 22 | #include "modules/rtp_rtcp/source/byte_io.h" |
| 23 | #include "modules/rtp_rtcp/source/rtp_header_extensions.h" |
Yves Gerey | 988cc08 | 2018-10-23 12:03:01 +0200 | [diff] [blame] | 24 | #include "modules/video_coding/codecs/interface/common_constants.h" |
| 25 | #include "rtc_base/checks.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 26 | #include "rtc_base/logging.h" |
Sergey Ulanov | 6acefdb | 2017-12-11 17:38:13 -0800 | [diff] [blame] | 27 | #include "rtc_base/stringutils.h" |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 28 | |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 29 | namespace webrtc { |
pwestin@webrtc.org | 0644b1d | 2011-12-01 15:42:31 +0000 | [diff] [blame] | 30 | |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 31 | namespace RtpUtility { |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 32 | |
solenberg@webrtc.org | d8a6e72 | 2013-03-26 14:02:30 +0000 | [diff] [blame] | 33 | enum { |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 34 | kRtcpExpectedVersion = 2, |
solenberg@webrtc.org | d8a6e72 | 2013-03-26 14:02:30 +0000 | [diff] [blame] | 35 | kRtcpMinHeaderLength = 4, |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 36 | kRtcpMinParseLength = 8, |
| 37 | |
| 38 | kRtpExpectedVersion = 2, |
| 39 | kRtpMinParseLength = 12 |
solenberg@webrtc.org | d8a6e72 | 2013-03-26 14:02:30 +0000 | [diff] [blame] | 40 | }; |
| 41 | |
pwestin@webrtc.org | 0644b1d | 2011-12-01 15:42:31 +0000 | [diff] [blame] | 42 | /* |
pwestin@webrtc.org | 0644b1d | 2011-12-01 15:42:31 +0000 | [diff] [blame] | 43 | * Misc utility routines |
| 44 | */ |
| 45 | |
sprang@webrtc.org | 3093390 | 2015-03-17 14:33:12 +0000 | [diff] [blame] | 46 | size_t Word32Align(size_t size) { |
| 47 | uint32_t remainder = size % 4; |
| 48 | if (remainder != 0) |
| 49 | return size + 4 - remainder; |
| 50 | return size; |
| 51 | } |
| 52 | |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 53 | RtpHeaderParser::RtpHeaderParser(const uint8_t* rtpData, |
| 54 | const size_t rtpDataLength) |
| 55 | : _ptrRTPDataBegin(rtpData), |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 56 | _ptrRTPDataEnd(rtpData ? (rtpData + rtpDataLength) : NULL) {} |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 57 | |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 58 | RtpHeaderParser::~RtpHeaderParser() {} |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 59 | |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 60 | bool RtpHeaderParser::RTCP() const { |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 61 | // 72 to 76 is reserved for RTP |
| 62 | // 77 to 79 is not reserver but they are not assigned we will block them |
| 63 | // for RTCP 200 SR == marker bit + 72 |
| 64 | // for RTCP 204 APP == marker bit + 76 |
| 65 | /* |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 66 | * RTCP |
| 67 | * |
| 68 | * FIR full INTRA-frame request 192 [RFC2032] supported |
| 69 | * NACK negative acknowledgement 193 [RFC2032] |
| 70 | * IJ Extended inter-arrival jitter report 195 [RFC-ietf-avt-rtp-toff |
| 71 | * set-07.txt] http://tools.ietf.org/html/draft-ietf-avt-rtp-toffset-07 |
| 72 | * SR sender report 200 [RFC3551] supported |
| 73 | * RR receiver report 201 [RFC3551] supported |
| 74 | * SDES source description 202 [RFC3551] supported |
| 75 | * BYE goodbye 203 [RFC3551] supported |
| 76 | * APP application-defined 204 [RFC3551] ignored |
| 77 | * RTPFB Transport layer FB message 205 [RFC4585] supported |
| 78 | * PSFB Payload-specific FB message 206 [RFC4585] supported |
| 79 | * XR extended report 207 [RFC3611] supported |
| 80 | */ |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 81 | |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 82 | /* 205 RFC 5104 |
| 83 | * FMT 1 NACK supported |
| 84 | * FMT 2 reserved |
| 85 | * FMT 3 TMMBR supported |
| 86 | * FMT 4 TMMBN supported |
| 87 | */ |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 88 | |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 89 | /* 206 RFC 5104 |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 90 | * FMT 1: Picture Loss Indication (PLI) supported |
| 91 | * FMT 2: Slice Lost Indication (SLI) |
| 92 | * FMT 3: Reference Picture Selection Indication (RPSI) |
| 93 | * FMT 4: Full Intra Request (FIR) Command supported |
| 94 | * FMT 5: Temporal-Spatial Trade-off Request (TSTR) |
| 95 | * FMT 6: Temporal-Spatial Trade-off Notification (TSTN) |
| 96 | * FMT 7: Video Back Channel Message (VBCM) |
| 97 | * FMT 15: Application layer FB message |
| 98 | */ |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 99 | |
solenberg@webrtc.org | d8a6e72 | 2013-03-26 14:02:30 +0000 | [diff] [blame] | 100 | const ptrdiff_t length = _ptrRTPDataEnd - _ptrRTPDataBegin; |
| 101 | if (length < kRtcpMinHeaderLength) { |
| 102 | return false; |
| 103 | } |
| 104 | |
pkasting@chromium.org | d324546 | 2015-02-23 21:28:22 +0000 | [diff] [blame] | 105 | const uint8_t V = _ptrRTPDataBegin[0] >> 6; |
solenberg@webrtc.org | d8a6e72 | 2013-03-26 14:02:30 +0000 | [diff] [blame] | 106 | if (V != kRtcpExpectedVersion) { |
| 107 | return false; |
| 108 | } |
| 109 | |
pkasting@chromium.org | d324546 | 2015-02-23 21:28:22 +0000 | [diff] [blame] | 110 | const uint8_t payloadType = _ptrRTPDataBegin[1]; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 111 | switch (payloadType) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 112 | case 192: |
pkasting@chromium.org | d324546 | 2015-02-23 21:28:22 +0000 | [diff] [blame] | 113 | return true; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 114 | case 193: |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 115 | // not supported |
| 116 | // pass through and check for a potential RTP packet |
pkasting@chromium.org | d324546 | 2015-02-23 21:28:22 +0000 | [diff] [blame] | 117 | return false; |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 118 | case 195: |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 119 | case 200: |
| 120 | case 201: |
| 121 | case 202: |
| 122 | case 203: |
| 123 | case 204: |
| 124 | case 205: |
| 125 | case 206: |
| 126 | case 207: |
pkasting@chromium.org | d324546 | 2015-02-23 21:28:22 +0000 | [diff] [blame] | 127 | return true; |
| 128 | default: |
| 129 | return false; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 130 | } |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 131 | } |
| 132 | |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 133 | bool RtpHeaderParser::ParseRtcp(RTPHeader* header) const { |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 134 | assert(header != NULL); |
| 135 | |
| 136 | const ptrdiff_t length = _ptrRTPDataEnd - _ptrRTPDataBegin; |
| 137 | if (length < kRtcpMinParseLength) { |
| 138 | return false; |
| 139 | } |
| 140 | |
| 141 | const uint8_t V = _ptrRTPDataBegin[0] >> 6; |
| 142 | if (V != kRtcpExpectedVersion) { |
| 143 | return false; |
| 144 | } |
| 145 | |
| 146 | const uint8_t PT = _ptrRTPDataBegin[1]; |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 147 | const size_t len = (_ptrRTPDataBegin[2] << 8) + _ptrRTPDataBegin[3]; |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 148 | const uint8_t* ptr = &_ptrRTPDataBegin[4]; |
| 149 | |
sprang@webrtc.org | 779c3d1 | 2015-03-17 16:42:49 +0000 | [diff] [blame] | 150 | uint32_t SSRC = ByteReader<uint32_t>::ReadBigEndian(ptr); |
| 151 | ptr += 4; |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 152 | |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 153 | header->payloadType = PT; |
| 154 | header->ssrc = SSRC; |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 155 | header->headerLength = 4 + (len << 2); |
| 156 | |
| 157 | return true; |
| 158 | } |
| 159 | |
Bjorn Terelius | b2bfba6 | 2018-03-05 20:52:04 +0100 | [diff] [blame] | 160 | bool RtpHeaderParser::Parse( |
| 161 | RTPHeader* header, |
| 162 | const RtpHeaderExtensionMap* ptrExtensionMap) const { |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 163 | const ptrdiff_t length = _ptrRTPDataEnd - _ptrRTPDataBegin; |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 164 | if (length < kRtpMinParseLength) { |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 165 | return false; |
| 166 | } |
| 167 | |
| 168 | // Version |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 169 | const uint8_t V = _ptrRTPDataBegin[0] >> 6; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 170 | // Padding |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 171 | const bool P = ((_ptrRTPDataBegin[0] & 0x20) == 0) ? false : true; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 172 | // eXtension |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 173 | const bool X = ((_ptrRTPDataBegin[0] & 0x10) == 0) ? false : true; |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 174 | const uint8_t CC = _ptrRTPDataBegin[0] & 0x0f; |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 175 | const bool M = ((_ptrRTPDataBegin[1] & 0x80) == 0) ? false : true; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 176 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 177 | const uint8_t PT = _ptrRTPDataBegin[1] & 0x7f; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 178 | |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 179 | const uint16_t sequenceNumber = |
| 180 | (_ptrRTPDataBegin[2] << 8) + _ptrRTPDataBegin[3]; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 181 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 182 | const uint8_t* ptr = &_ptrRTPDataBegin[4]; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 183 | |
sprang@webrtc.org | 779c3d1 | 2015-03-17 16:42:49 +0000 | [diff] [blame] | 184 | uint32_t RTPTimestamp = ByteReader<uint32_t>::ReadBigEndian(ptr); |
| 185 | ptr += 4; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 186 | |
sprang@webrtc.org | 779c3d1 | 2015-03-17 16:42:49 +0000 | [diff] [blame] | 187 | uint32_t SSRC = ByteReader<uint32_t>::ReadBigEndian(ptr); |
| 188 | ptr += 4; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 189 | |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 190 | if (V != kRtpExpectedVersion) { |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 191 | return false; |
| 192 | } |
| 193 | |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 194 | const size_t CSRCocts = CC * 4; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 195 | |
| 196 | if ((ptr + CSRCocts) > _ptrRTPDataEnd) { |
| 197 | return false; |
| 198 | } |
| 199 | |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 200 | header->markerBit = M; |
| 201 | header->payloadType = PT; |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 202 | header->sequenceNumber = sequenceNumber; |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 203 | header->timestamp = RTPTimestamp; |
| 204 | header->ssrc = SSRC; |
| 205 | header->numCSRCs = CC; |
Minyue Li | 1a80018 | 2018-09-12 12:52:48 +0200 | [diff] [blame] | 206 | if (!P) { |
| 207 | header->paddingLength = 0; |
| 208 | } |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 209 | |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 210 | for (uint8_t i = 0; i < CC; ++i) { |
sprang@webrtc.org | 779c3d1 | 2015-03-17 16:42:49 +0000 | [diff] [blame] | 211 | uint32_t CSRC = ByteReader<uint32_t>::ReadBigEndian(ptr); |
| 212 | ptr += 4; |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 213 | header->arrOfCSRCs[i] = CSRC; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 214 | } |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 215 | |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 216 | header->headerLength = 12 + CSRCocts; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 217 | |
| 218 | // If in effect, MAY be omitted for those packets for which the offset |
| 219 | // is zero. |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 220 | header->extension.hasTransmissionTimeOffset = false; |
| 221 | header->extension.transmissionTimeOffset = 0; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 222 | |
solenberg@webrtc.org | 7ebbea1 | 2013-05-16 11:10:31 +0000 | [diff] [blame] | 223 | // May not be present in packet. |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 224 | header->extension.hasAbsoluteSendTime = false; |
| 225 | header->extension.absoluteSendTime = 0; |
solenberg@webrtc.org | 7ebbea1 | 2013-05-16 11:10:31 +0000 | [diff] [blame] | 226 | |
wu@webrtc.org | ebdb0e3 | 2014-03-06 23:49:08 +0000 | [diff] [blame] | 227 | // May not be present in packet. |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 228 | header->extension.hasAudioLevel = false; |
| 229 | header->extension.voiceActivity = false; |
| 230 | header->extension.audioLevel = 0; |
wu@webrtc.org | ebdb0e3 | 2014-03-06 23:49:08 +0000 | [diff] [blame] | 231 | |
guoweis@webrtc.org | 4536289 | 2015-03-04 22:55:15 +0000 | [diff] [blame] | 232 | // May not be present in packet. |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 233 | header->extension.hasVideoRotation = false; |
magjed | 71eb61c | 2016-09-08 03:24:58 -0700 | [diff] [blame] | 234 | header->extension.videoRotation = kVideoRotation_0; |
guoweis@webrtc.org | 4536289 | 2015-03-04 22:55:15 +0000 | [diff] [blame] | 235 | |
isheriff | 6b4b5f3 | 2016-06-08 00:24:21 -0700 | [diff] [blame] | 236 | // May not be present in packet. |
| 237 | header->extension.playout_delay.min_ms = -1; |
| 238 | header->extension.playout_delay.max_ms = -1; |
| 239 | |
ilnik | 00d802b | 2017-04-11 10:34:31 -0700 | [diff] [blame] | 240 | // May not be present in packet. |
| 241 | header->extension.hasVideoContentType = false; |
| 242 | header->extension.videoContentType = VideoContentType::UNSPECIFIED; |
| 243 | |
ilnik | 04f4d12 | 2017-06-19 07:18:55 -0700 | [diff] [blame] | 244 | header->extension.has_video_timing = false; |
| 245 | header->extension.video_timing = {0u, 0u, 0u, 0u, 0u, 0u, false}; |
| 246 | |
Johnny Lee | e0c8b23 | 2018-09-11 16:50:49 -0400 | [diff] [blame] | 247 | header->extension.has_frame_marking = false; |
| 248 | header->extension.frame_marking = {false, false, false, false, false, |
| 249 | kNoTemporalIdx, 0, 0}; |
| 250 | |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 251 | if (X) { |
| 252 | /* RTP header extension, RFC 3550. |
| 253 | 0 1 2 3 |
| 254 | 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 |
| 255 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 256 | | defined by profile | length | |
| 257 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 258 | | header extension | |
| 259 | | .... | |
| 260 | */ |
| 261 | const ptrdiff_t remain = _ptrRTPDataEnd - ptr; |
| 262 | if (remain < 4) { |
| 263 | return false; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 264 | } |
| 265 | |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 266 | header->headerLength += 4; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 267 | |
sprang@webrtc.org | 779c3d1 | 2015-03-17 16:42:49 +0000 | [diff] [blame] | 268 | uint16_t definedByProfile = ByteReader<uint16_t>::ReadBigEndian(ptr); |
| 269 | ptr += 2; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 270 | |
sprang@webrtc.org | 779c3d1 | 2015-03-17 16:42:49 +0000 | [diff] [blame] | 271 | // in 32 bit words |
| 272 | size_t XLen = ByteReader<uint16_t>::ReadBigEndian(ptr); |
| 273 | ptr += 2; |
| 274 | XLen *= 4; // in bytes |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 275 | |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 276 | if (static_cast<size_t>(remain) < (4 + XLen)) { |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 277 | return false; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 278 | } |
danilchap | 5c4f24a | 2017-01-23 11:10:20 -0800 | [diff] [blame] | 279 | static constexpr uint16_t kRtpOneByteHeaderExtensionId = 0xBEDE; |
pbos@webrtc.org | 3004c79 | 2013-05-07 12:36:21 +0000 | [diff] [blame] | 280 | if (definedByProfile == kRtpOneByteHeaderExtensionId) { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 281 | const uint8_t* ptrRTPDataExtensionEnd = ptr + XLen; |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 282 | ParseOneByteExtensionHeader(header, ptrExtensionMap, |
| 283 | ptrRTPDataExtensionEnd, ptr); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 284 | } |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 285 | header->headerLength += XLen; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 286 | } |
Minyue Li | 1a80018 | 2018-09-12 12:52:48 +0200 | [diff] [blame] | 287 | if (header->headerLength > static_cast<size_t>(length)) |
| 288 | return false; |
| 289 | |
| 290 | if (P) { |
| 291 | // Packet has padding. |
| 292 | if (header->headerLength != static_cast<size_t>(length)) { |
| 293 | // Packet is not header only. We can parse padding length now. |
| 294 | header->paddingLength = *(_ptrRTPDataEnd - 1); |
| 295 | } else { |
| 296 | RTC_LOG(LS_WARNING) << "Cannot parse padding length."; |
| 297 | // Packet is header only. We have no clue of the padding length. |
| 298 | return false; |
| 299 | } |
| 300 | } |
| 301 | |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 302 | if (header->headerLength + header->paddingLength > |
| 303 | static_cast<size_t>(length)) |
pbos | bd2522a | 2015-07-01 05:35:53 -0700 | [diff] [blame] | 304 | return false; |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 305 | return true; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 306 | } |
| 307 | |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 308 | void RtpHeaderParser::ParseOneByteExtensionHeader( |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 309 | RTPHeader* header, |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 310 | const RtpHeaderExtensionMap* ptrExtensionMap, |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 311 | const uint8_t* ptrRTPDataExtensionEnd, |
| 312 | const uint8_t* ptr) const { |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 313 | if (!ptrExtensionMap) { |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 314 | return; |
| 315 | } |
| 316 | |
| 317 | while (ptrRTPDataExtensionEnd - ptr > 0) { |
| 318 | // 0 |
| 319 | // 0 1 2 3 4 5 6 7 |
| 320 | // +-+-+-+-+-+-+-+-+ |
| 321 | // | ID | len | |
| 322 | // +-+-+-+-+-+-+-+-+ |
| 323 | |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 324 | // Note that 'len' is the header extension element length, which is the |
| 325 | // number of bytes - 1. |
Stefan Holmer | 3842c5c | 2016-01-12 13:55:00 +0100 | [diff] [blame] | 326 | const int id = (*ptr & 0xf0) >> 4; |
| 327 | const int len = (*ptr & 0x0f); |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 328 | ptr++; |
| 329 | |
danilchap | b7374db | 2016-11-24 09:06:05 -0800 | [diff] [blame] | 330 | if (id == 0) { |
| 331 | // Padding byte, skip ignoring len. |
| 332 | continue; |
| 333 | } |
| 334 | |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 335 | if (id == 15) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 336 | RTC_LOG(LS_VERBOSE) |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 337 | << "RTP extension header 15 encountered. Terminate parsing."; |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 338 | return; |
| 339 | } |
| 340 | |
Danil Chapovalov | 30a3a75 | 2016-06-16 15:57:15 +0200 | [diff] [blame] | 341 | if (ptrRTPDataExtensionEnd - ptr < (len + 1)) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 342 | RTC_LOG(LS_WARNING) << "Incorrect one-byte extension len: " << (len + 1) |
| 343 | << ", bytes left in buffer: " |
| 344 | << (ptrRTPDataExtensionEnd - ptr); |
Danil Chapovalov | 30a3a75 | 2016-06-16 15:57:15 +0200 | [diff] [blame] | 345 | return; |
| 346 | } |
| 347 | |
danilchap | 1454669 | 2016-12-01 08:39:35 -0800 | [diff] [blame] | 348 | RTPExtensionType type = ptrExtensionMap->GetType(id); |
| 349 | if (type == RtpHeaderExtensionMap::kInvalidType) { |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 350 | // If we encounter an unknown extension, just skip over it. |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 351 | RTC_LOG(LS_WARNING) << "Failed to find extension id: " << id; |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 352 | } else { |
| 353 | switch (type) { |
| 354 | case kRtpExtensionTransmissionTimeOffset: { |
| 355 | if (len != 2) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 356 | RTC_LOG(LS_WARNING) |
| 357 | << "Incorrect transmission time offset len: " << len; |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 358 | return; |
| 359 | } |
| 360 | // 0 1 2 3 |
| 361 | // 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 |
| 362 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 363 | // | ID | len=2 | transmission offset | |
| 364 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 365 | |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 366 | header->extension.transmissionTimeOffset = |
sprang@webrtc.org | 779c3d1 | 2015-03-17 16:42:49 +0000 | [diff] [blame] | 367 | ByteReader<int32_t, 3>::ReadBigEndian(ptr); |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 368 | header->extension.hasTransmissionTimeOffset = true; |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 369 | break; |
| 370 | } |
| 371 | case kRtpExtensionAudioLevel: { |
| 372 | if (len != 0) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 373 | RTC_LOG(LS_WARNING) << "Incorrect audio level len: " << len; |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 374 | return; |
| 375 | } |
sprang@webrtc.org | 3093390 | 2015-03-17 14:33:12 +0000 | [diff] [blame] | 376 | // 0 1 |
| 377 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 |
| 378 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 379 | // | ID | len=0 |V| level | |
| 380 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 381 | // |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 382 | header->extension.audioLevel = ptr[0] & 0x7f; |
| 383 | header->extension.voiceActivity = (ptr[0] & 0x80) != 0; |
| 384 | header->extension.hasAudioLevel = true; |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 385 | break; |
| 386 | } |
| 387 | case kRtpExtensionAbsoluteSendTime: { |
| 388 | if (len != 2) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 389 | RTC_LOG(LS_WARNING) << "Incorrect absolute send time len: " << len; |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 390 | return; |
| 391 | } |
| 392 | // 0 1 2 3 |
| 393 | // 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 |
| 394 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 395 | // | ID | len=2 | absolute send time | |
| 396 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 397 | |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 398 | header->extension.absoluteSendTime = |
sprang@webrtc.org | 779c3d1 | 2015-03-17 16:42:49 +0000 | [diff] [blame] | 399 | ByteReader<uint32_t, 3>::ReadBigEndian(ptr); |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 400 | header->extension.hasAbsoluteSendTime = true; |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 401 | break; |
| 402 | } |
guoweis@webrtc.org | 4536289 | 2015-03-04 22:55:15 +0000 | [diff] [blame] | 403 | case kRtpExtensionVideoRotation: { |
| 404 | if (len != 0) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 405 | RTC_LOG(LS_WARNING) |
guoweis@webrtc.org | 4536289 | 2015-03-04 22:55:15 +0000 | [diff] [blame] | 406 | << "Incorrect coordination of video coordination len: " << len; |
| 407 | return; |
| 408 | } |
sprang@webrtc.org | 779c3d1 | 2015-03-17 16:42:49 +0000 | [diff] [blame] | 409 | // 0 1 |
| 410 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 |
| 411 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 412 | // | ID | len=0 |0 0 0 0 C F R R| |
| 413 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 414 | header->extension.hasVideoRotation = true; |
magjed | 71eb61c | 2016-09-08 03:24:58 -0700 | [diff] [blame] | 415 | header->extension.videoRotation = |
| 416 | ConvertCVOByteToVideoRotation(ptr[0]); |
guoweis@webrtc.org | 4536289 | 2015-03-04 22:55:15 +0000 | [diff] [blame] | 417 | break; |
| 418 | } |
sprang@webrtc.org | 3093390 | 2015-03-17 14:33:12 +0000 | [diff] [blame] | 419 | case kRtpExtensionTransportSequenceNumber: { |
| 420 | if (len != 1) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 421 | RTC_LOG(LS_WARNING) |
| 422 | << "Incorrect transport sequence number len: " << len; |
sprang@webrtc.org | 3093390 | 2015-03-17 14:33:12 +0000 | [diff] [blame] | 423 | return; |
| 424 | } |
| 425 | // 0 1 2 |
| 426 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 |
| 427 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 428 | // | ID | L=1 |transport wide sequence number | |
| 429 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 430 | |
| 431 | uint16_t sequence_number = ptr[0] << 8; |
| 432 | sequence_number += ptr[1]; |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 433 | header->extension.transportSequenceNumber = sequence_number; |
| 434 | header->extension.hasTransportSequenceNumber = true; |
sprang@webrtc.org | 3093390 | 2015-03-17 14:33:12 +0000 | [diff] [blame] | 435 | break; |
| 436 | } |
isheriff | 6b4b5f3 | 2016-06-08 00:24:21 -0700 | [diff] [blame] | 437 | case kRtpExtensionPlayoutDelay: { |
| 438 | if (len != 2) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 439 | RTC_LOG(LS_WARNING) << "Incorrect playout delay len: " << len; |
isheriff | 6b4b5f3 | 2016-06-08 00:24:21 -0700 | [diff] [blame] | 440 | return; |
| 441 | } |
| 442 | // 0 1 2 3 |
| 443 | // 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 |
| 444 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 445 | // | ID | len=2 | MIN delay | MAX delay | |
| 446 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 447 | |
| 448 | int min_playout_delay = (ptr[0] << 4) | ((ptr[1] >> 4) & 0xf); |
| 449 | int max_playout_delay = ((ptr[1] & 0xf) << 8) | ptr[2]; |
| 450 | header->extension.playout_delay.min_ms = |
danilchap | 5c4f24a | 2017-01-23 11:10:20 -0800 | [diff] [blame] | 451 | min_playout_delay * PlayoutDelayLimits::kGranularityMs; |
isheriff | 6b4b5f3 | 2016-06-08 00:24:21 -0700 | [diff] [blame] | 452 | header->extension.playout_delay.max_ms = |
danilchap | 5c4f24a | 2017-01-23 11:10:20 -0800 | [diff] [blame] | 453 | max_playout_delay * PlayoutDelayLimits::kGranularityMs; |
isheriff | 6b4b5f3 | 2016-06-08 00:24:21 -0700 | [diff] [blame] | 454 | break; |
| 455 | } |
ilnik | 00d802b | 2017-04-11 10:34:31 -0700 | [diff] [blame] | 456 | case kRtpExtensionVideoContentType: { |
| 457 | if (len != 0) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 458 | RTC_LOG(LS_WARNING) << "Incorrect video content type len: " << len; |
ilnik | 00d802b | 2017-04-11 10:34:31 -0700 | [diff] [blame] | 459 | return; |
| 460 | } |
| 461 | // 0 1 |
| 462 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 |
| 463 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 464 | // | ID | len=0 | Content type | |
| 465 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 466 | |
ilnik | 6d5b4d6 | 2017-08-30 03:32:14 -0700 | [diff] [blame] | 467 | if (videocontenttypehelpers::IsValidContentType(ptr[0])) { |
ilnik | 00d802b | 2017-04-11 10:34:31 -0700 | [diff] [blame] | 468 | header->extension.hasVideoContentType = true; |
| 469 | header->extension.videoContentType = |
| 470 | static_cast<VideoContentType>(ptr[0]); |
| 471 | } |
| 472 | break; |
| 473 | } |
ilnik | 04f4d12 | 2017-06-19 07:18:55 -0700 | [diff] [blame] | 474 | case kRtpExtensionVideoTiming: { |
| 475 | if (len != VideoTimingExtension::kValueSizeBytes - 1) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 476 | RTC_LOG(LS_WARNING) << "Incorrect video timing len: " << len; |
ilnik | 04f4d12 | 2017-06-19 07:18:55 -0700 | [diff] [blame] | 477 | return; |
| 478 | } |
| 479 | header->extension.has_video_timing = true; |
| 480 | VideoTimingExtension::Parse(rtc::MakeArrayView(ptr, len + 1), |
| 481 | &header->extension.video_timing); |
| 482 | break; |
| 483 | } |
Johnny Lee | e0c8b23 | 2018-09-11 16:50:49 -0400 | [diff] [blame] | 484 | case kRtpExtensionFrameMarking: { |
| 485 | if (!FrameMarkingExtension::Parse(rtc::MakeArrayView(ptr, len + 1), |
| 486 | &header->extension.frame_marking)) { |
| 487 | RTC_LOG(LS_WARNING) << "Incorrect frame marking len: " << len; |
| 488 | return; |
| 489 | } |
| 490 | header->extension.has_frame_marking = true; |
| 491 | break; |
| 492 | } |
danilchap | ef8d773 | 2017-04-19 02:59:48 -0700 | [diff] [blame] | 493 | case kRtpExtensionRtpStreamId: { |
| 494 | header->extension.stream_id.Set(rtc::MakeArrayView(ptr, len + 1)); |
| 495 | break; |
| 496 | } |
| 497 | case kRtpExtensionRepairedRtpStreamId: { |
| 498 | header->extension.repaired_stream_id.Set( |
| 499 | rtc::MakeArrayView(ptr, len + 1)); |
| 500 | break; |
| 501 | } |
Steve Anton | a3251dd | 2017-07-21 09:58:31 -0700 | [diff] [blame] | 502 | case kRtpExtensionMid: { |
| 503 | header->extension.mid.Set(rtc::MakeArrayView(ptr, len + 1)); |
| 504 | break; |
| 505 | } |
Danil Chapovalov | 916ec7d | 2018-06-25 18:22:15 +0200 | [diff] [blame] | 506 | case kRtpExtensionGenericFrameDescriptor: |
| 507 | RTC_LOG(WARNING) |
| 508 | << "RtpGenericFrameDescriptor unsupported by rtp header parser."; |
| 509 | break; |
danilchap | 1454669 | 2016-12-01 08:39:35 -0800 | [diff] [blame] | 510 | case kRtpExtensionNone: |
| 511 | case kRtpExtensionNumberOfExtensions: { |
| 512 | RTC_NOTREACHED() << "Invalid extension type: " << type; |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 513 | return; |
| 514 | } |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 515 | } |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 516 | } |
solenberg@webrtc.org | 440fa23 | 2014-03-25 19:57:07 +0000 | [diff] [blame] | 517 | ptr += (len + 1); |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 518 | } |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 519 | } |
| 520 | |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 521 | } // namespace RtpUtility |
henrike@webrtc.org | d5657c2 | 2012-02-08 23:41:49 +0000 | [diff] [blame] | 522 | } // namespace webrtc |