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_sender.h" |
pwestin@webrtc.org | 571a1c0 | 2012-11-13 21:12:39 +0000 | [diff] [blame] | 12 | |
danilchap | b8b6fbb | 2015-12-10 05:05:27 -0800 | [diff] [blame] | 13 | #include <algorithm> |
Johannes Kron | 965e794 | 2018-09-13 15:36:20 +0200 | [diff] [blame] | 14 | #include <limits> |
Steve Anton | 296a0ce | 2018-03-22 15:17:27 -0700 | [diff] [blame] | 15 | #include <string> |
Shao Changbin | e62202f | 2015-04-21 20:24:50 +0800 | [diff] [blame] | 16 | #include <utility> |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 17 | |
Karl Wiberg | 918f50c | 2018-07-05 11:40:33 +0200 | [diff] [blame] | 18 | #include "absl/memory/memory.h" |
Niels Möller | aa3c1cc | 2018-11-02 10:54:56 +0100 | [diff] [blame] | 19 | #include "absl/strings/match.h" |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 20 | #include "api/array_view.h" |
Erik Språng | 4580ca2 | 2019-07-04 10:38:43 +0200 | [diff] [blame] | 21 | #include "api/transport/field_trial_based_config.h" |
Elad Alon | 4a87e1c | 2017-10-03 16:11:34 +0200 | [diff] [blame] | 22 | #include "logging/rtc_event_log/events/rtc_event_rtp_packet_outgoing.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 23 | #include "logging/rtc_event_log/rtc_event_log.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 24 | #include "modules/rtp_rtcp/include/rtp_cvo.h" |
| 25 | #include "modules/rtp_rtcp/source/byte_io.h" |
philipel | 569397f | 2018-09-26 12:25:31 +0200 | [diff] [blame] | 26 | #include "modules/rtp_rtcp/source/rtp_generic_frame_descriptor_extension.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 27 | #include "modules/rtp_rtcp/source/rtp_header_extensions.h" |
| 28 | #include "modules/rtp_rtcp/source/rtp_packet_to_send.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 29 | #include "modules/rtp_rtcp/source/time_util.h" |
| 30 | #include "rtc_base/arraysize.h" |
| 31 | #include "rtc_base/checks.h" |
| 32 | #include "rtc_base/logging.h" |
Karl Wiberg | e40468b | 2017-11-22 10:42:26 +0100 | [diff] [blame] | 33 | #include "rtc_base/numerics/safe_minmax.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 34 | #include "rtc_base/rate_limiter.h" |
Steve Anton | 10542f2 | 2019-01-11 09:11:00 -0800 | [diff] [blame] | 35 | #include "rtc_base/time_utils.h" |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 36 | |
| 37 | namespace webrtc { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 38 | |
hclam@chromium.org | 806dc3b | 2013-04-09 19:54:10 +0000 | [diff] [blame] | 39 | namespace { |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 40 | // Max in the RFC 3550 is 255 bytes, we limit it to be modulus 32 for SRTP. |
| 41 | constexpr size_t kMaxPaddingLength = 224; |
stefan | 53b6cc3 | 2017-02-03 08:13:57 -0800 | [diff] [blame] | 42 | constexpr size_t kMinAudioPaddingLength = 50; |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 43 | constexpr int kSendSideDelayWindowMs = 1000; |
| 44 | constexpr size_t kRtpHeaderLength = 12; |
| 45 | constexpr uint16_t kMaxInitRtpSeqNumber = 32767; // 2^15 -1. |
| 46 | constexpr uint32_t kTimestampTicksPerMs = 90; |
| 47 | constexpr int kBitrateStatisticsWindowMs = 1000; |
guoweis@webrtc.org | 4536289 | 2015-03-04 22:55:15 +0000 | [diff] [blame] | 48 | |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 49 | constexpr size_t kMinFlexfecPacketsToStoreForPacing = 50; |
| 50 | |
Erik Språng | 214f543 | 2019-06-20 15:09:58 +0200 | [diff] [blame] | 51 | // Min size needed to get payload padding from packet history. |
| 52 | constexpr int kMinPayloadPaddingBytes = 50; |
| 53 | |
erikvarga | 2788373 | 2017-05-17 05:08:38 -0700 | [diff] [blame] | 54 | template <typename Extension> |
| 55 | constexpr RtpExtensionSize CreateExtensionSize() { |
| 56 | return {Extension::kId, Extension::kValueSizeBytes}; |
| 57 | } |
| 58 | |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 59 | template <typename Extension> |
| 60 | constexpr RtpExtensionSize CreateMaxExtensionSize() { |
| 61 | return {Extension::kId, Extension::kMaxValueSizeBytes}; |
| 62 | } |
| 63 | |
erikvarga | 2788373 | 2017-05-17 05:08:38 -0700 | [diff] [blame] | 64 | // Size info for header extensions that might be used in padding or FEC packets. |
Ilya Nikolaevskiy | 1d037ae | 2018-03-15 15:46:17 +0100 | [diff] [blame] | 65 | constexpr RtpExtensionSize kFecOrPaddingExtensionSizes[] = { |
erikvarga | 2788373 | 2017-05-17 05:08:38 -0700 | [diff] [blame] | 66 | CreateExtensionSize<AbsoluteSendTime>(), |
| 67 | CreateExtensionSize<TransmissionOffset>(), |
| 68 | CreateExtensionSize<TransportSequenceNumber>(), |
| 69 | CreateExtensionSize<PlayoutDelayLimits>(), |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 70 | CreateMaxExtensionSize<RtpMid>(), |
erikvarga | 2788373 | 2017-05-17 05:08:38 -0700 | [diff] [blame] | 71 | }; |
| 72 | |
Ilya Nikolaevskiy | 1d037ae | 2018-03-15 15:46:17 +0100 | [diff] [blame] | 73 | // Size info for header extensions that might be used in video packets. |
| 74 | constexpr RtpExtensionSize kVideoExtensionSizes[] = { |
| 75 | CreateExtensionSize<AbsoluteSendTime>(), |
Chen Xing | cd8a6e2 | 2019-07-01 10:56:51 +0200 | [diff] [blame] | 76 | CreateExtensionSize<AbsoluteCaptureTimeExtension>(), |
Ilya Nikolaevskiy | 1d037ae | 2018-03-15 15:46:17 +0100 | [diff] [blame] | 77 | CreateExtensionSize<TransmissionOffset>(), |
| 78 | CreateExtensionSize<TransportSequenceNumber>(), |
| 79 | CreateExtensionSize<PlayoutDelayLimits>(), |
| 80 | CreateExtensionSize<VideoOrientation>(), |
| 81 | CreateExtensionSize<VideoContentTypeExtension>(), |
| 82 | CreateExtensionSize<VideoTimingExtension>(), |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 83 | CreateMaxExtensionSize<RtpStreamId>(), |
| 84 | CreateMaxExtensionSize<RepairedRtpStreamId>(), |
| 85 | CreateMaxExtensionSize<RtpMid>(), |
Elad Alon | ccb9b75 | 2019-02-19 13:01:31 +0100 | [diff] [blame] | 86 | {RtpGenericFrameDescriptorExtension00::kId, |
| 87 | RtpGenericFrameDescriptorExtension00::kMaxSizeBytes}, |
| 88 | {RtpGenericFrameDescriptorExtension01::kId, |
| 89 | RtpGenericFrameDescriptorExtension01::kMaxSizeBytes}, |
Ilya Nikolaevskiy | 1d037ae | 2018-03-15 15:46:17 +0100 | [diff] [blame] | 90 | }; |
| 91 | |
Erik Språng | 13eb764 | 2019-06-24 10:58:48 +0200 | [diff] [blame] | 92 | // TODO(bugs.webrtc.org/10633): Remove when downstream code stops using |
| 93 | // priority. At the time of writing, the priority can be directly mapped to a |
| 94 | // packet type. This is only for a transition period. |
| 95 | RtpPacketToSend::Type PacketPriorityToType(RtpPacketSender::Priority priority) { |
| 96 | switch (priority) { |
| 97 | case RtpPacketSender::Priority::kLowPriority: |
| 98 | return RtpPacketToSend::Type::kVideo; |
| 99 | case RtpPacketSender::Priority::kNormalPriority: |
| 100 | return RtpPacketToSend::Type::kRetransmission; |
| 101 | case RtpPacketSender::Priority::kHighPriority: |
| 102 | return RtpPacketToSend::Type::kAudio; |
| 103 | default: |
| 104 | RTC_NOTREACHED() << "Unexpected priority: " << priority; |
| 105 | return RtpPacketToSend::Type::kVideo; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | // TODO(bugs.webrtc.org/10633): Remove when packets are always owned by pacer. |
| 110 | RtpPacketSender::Priority PacketTypeToPriority(RtpPacketToSend::Type type) { |
| 111 | switch (type) { |
| 112 | case RtpPacketToSend::Type::kAudio: |
| 113 | return RtpPacketSender::Priority::kHighPriority; |
| 114 | case RtpPacketToSend::Type::kVideo: |
| 115 | return RtpPacketSender::Priority::kLowPriority; |
| 116 | case RtpPacketToSend::Type::kRetransmission: |
| 117 | return RtpPacketSender::Priority::kNormalPriority; |
| 118 | case RtpPacketToSend::Type::kForwardErrorCorrection: |
| 119 | return RtpPacketSender::Priority::kLowPriority; |
| 120 | break; |
| 121 | case RtpPacketToSend::Type::kPadding: |
| 122 | RTC_NOTREACHED() << "Unexpected type for legacy path: kPadding"; |
| 123 | break; |
| 124 | } |
| 125 | return RtpPacketSender::Priority::kLowPriority; |
| 126 | } |
| 127 | |
Erik Språng | 4580ca2 | 2019-07-04 10:38:43 +0200 | [diff] [blame] | 128 | bool IsEnabled(absl::string_view name, |
| 129 | const WebRtcKeyValueConfig* field_trials) { |
| 130 | FieldTrialBasedConfig default_trials; |
| 131 | auto& trials = field_trials ? *field_trials : default_trials; |
| 132 | return trials.Lookup(name).find("Enabled") == 0; |
| 133 | } |
| 134 | |
| 135 | bool IsDisabled(absl::string_view name, |
| 136 | const WebRtcKeyValueConfig* field_trials) { |
| 137 | FieldTrialBasedConfig default_trials; |
| 138 | auto& trials = field_trials ? *field_trials : default_trials; |
| 139 | return trials.Lookup(name).find("Disabled") == 0; |
| 140 | } |
| 141 | |
Mirko Bonadei | 999a72a | 2019-07-12 17:33:46 +0000 | [diff] [blame] | 142 | bool HasBweExtension(const RtpHeaderExtensionMap& extensions_map) { |
| 143 | return extensions_map.IsRegistered(kRtpExtensionTransportSequenceNumber) || |
| 144 | extensions_map.IsRegistered(kRtpExtensionTransportSequenceNumber02) || |
| 145 | extensions_map.IsRegistered(kRtpExtensionAbsoluteSendTime) || |
| 146 | extensions_map.IsRegistered(kRtpExtensionTransmissionTimeOffset); |
| 147 | } |
| 148 | |
hclam@chromium.org | 806dc3b | 2013-04-09 19:54:10 +0000 | [diff] [blame] | 149 | } // namespace |
| 150 | |
Erik Språng | 4580ca2 | 2019-07-04 10:38:43 +0200 | [diff] [blame] | 151 | RTPSender::RTPSender(const RtpRtcp::Configuration& config) |
| 152 | : clock_(config.clock), |
| 153 | random_(clock_->TimeInMicroseconds()), |
| 154 | audio_configured_(config.audio), |
| 155 | flexfec_ssrc_(config.flexfec_sender |
| 156 | ? absl::make_optional(config.flexfec_sender->ssrc()) |
| 157 | : absl::nullopt), |
| 158 | paced_sender_(config.paced_sender), |
| 159 | transport_sequence_number_allocator_( |
| 160 | config.transport_sequence_number_allocator), |
| 161 | transport_feedback_observer_(config.transport_feedback_callback), |
| 162 | transport_(config.outgoing_transport), |
| 163 | sending_media_(true), // Default to sending media. |
| 164 | force_part_of_allocation_(false), |
| 165 | max_packet_size_(IP_PACKET_SIZE - 28), // Default is IP-v4/UDP. |
| 166 | last_payload_type_(-1), |
| 167 | rtp_header_extension_map_(config.extmap_allow_mixed), |
| 168 | packet_history_(clock_), |
| 169 | flexfec_packet_history_(clock_), |
| 170 | // Statistics |
| 171 | send_delays_(), |
| 172 | max_delay_it_(send_delays_.end()), |
| 173 | sum_delays_ms_(0), |
| 174 | total_packet_send_delay_ms_(0), |
| 175 | rtp_stats_callback_(nullptr), |
| 176 | total_bitrate_sent_(kBitrateStatisticsWindowMs, |
| 177 | RateStatistics::kBpsScale), |
| 178 | nack_bitrate_sent_(kBitrateStatisticsWindowMs, RateStatistics::kBpsScale), |
| 179 | send_side_delay_observer_(config.send_side_delay_observer), |
| 180 | event_log_(config.event_log), |
| 181 | send_packet_observer_(config.send_packet_observer), |
| 182 | bitrate_callback_(config.send_bitrate_observer), |
| 183 | // RTP variables |
| 184 | sequence_number_forced_(false), |
| 185 | ssrc_(config.media_send_ssrc), |
| 186 | last_rtp_timestamp_(0), |
| 187 | capture_time_ms_(0), |
| 188 | last_timestamp_time_ms_(0), |
| 189 | media_has_been_sent_(false), |
| 190 | last_packet_marker_bit_(false), |
| 191 | csrcs_(), |
| 192 | rtx_(kRtxOff), |
| 193 | ssrc_rtx_(config.rtx_send_ssrc), |
| 194 | rtp_overhead_bytes_per_packet_(0), |
Mirko Bonadei | 999a72a | 2019-07-12 17:33:46 +0000 | [diff] [blame] | 195 | supports_bwe_extension_(false), |
Erik Språng | 4580ca2 | 2019-07-04 10:38:43 +0200 | [diff] [blame] | 196 | retransmission_rate_limiter_(config.retransmission_rate_limiter), |
| 197 | overhead_observer_(config.overhead_observer), |
| 198 | populate_network2_timestamp_(config.populate_network2_timestamp), |
| 199 | send_side_bwe_with_overhead_( |
| 200 | IsEnabled("WebRTC-SendSideBwe-WithOverhead", config.field_trials)), |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 201 | pacer_legacy_packet_referencing_( |
| 202 | !IsDisabled("WebRTC-Pacer-LegacyPacketReferencing", |
Erik Språng | 4580ca2 | 2019-07-04 10:38:43 +0200 | [diff] [blame] | 203 | config.field_trials)) { |
| 204 | // This random initialization is not intended to be cryptographic strong. |
| 205 | timestamp_offset_ = random_.Rand<uint32_t>(); |
| 206 | // Random start, 16 bits. Can't be 0. |
| 207 | sequence_number_rtx_ = random_.Rand(1, kMaxInitRtpSeqNumber); |
| 208 | sequence_number_ = random_.Rand(1, kMaxInitRtpSeqNumber); |
| 209 | |
| 210 | // Store FlexFEC packets in the packet history data structure, so they can |
| 211 | // be found when paced. |
| 212 | if (flexfec_ssrc_) { |
Erik Språng | 4580ca2 | 2019-07-04 10:38:43 +0200 | [diff] [blame] | 213 | flexfec_packet_history_.SetStorePacketsStatus( |
Erik Språng | b9f5989 | 2019-07-19 13:52:13 +0200 | [diff] [blame^] | 214 | RtpPacketHistory::StorageMode::kStoreAndCull, |
| 215 | kMinFlexfecPacketsToStoreForPacing); |
Erik Språng | 4580ca2 | 2019-07-04 10:38:43 +0200 | [diff] [blame] | 216 | } |
| 217 | } |
| 218 | |
Amit Hilbuch | 02d7d35 | 2019-07-02 21:04:57 +0000 | [diff] [blame] | 219 | RTPSender::RTPSender( |
| 220 | bool audio, |
| 221 | Clock* clock, |
| 222 | Transport* transport, |
| 223 | RtpPacketPacer* paced_sender, |
| 224 | absl::optional<uint32_t> flexfec_ssrc, |
| 225 | TransportSequenceNumberAllocator* sequence_number_allocator, |
| 226 | TransportFeedbackObserver* transport_feedback_observer, |
| 227 | BitrateStatisticsObserver* bitrate_callback, |
| 228 | SendSideDelayObserver* send_side_delay_observer, |
| 229 | RtcEventLog* event_log, |
| 230 | SendPacketObserver* send_packet_observer, |
| 231 | RateLimiter* retransmission_rate_limiter, |
| 232 | OverheadObserver* overhead_observer, |
| 233 | bool populate_network2_timestamp, |
| 234 | FrameEncryptorInterface* frame_encryptor, |
| 235 | bool require_frame_encryption, |
| 236 | bool extmap_allow_mixed, |
| 237 | const WebRtcKeyValueConfig& field_trials) |
| 238 | : clock_(clock), |
danilchap | 47a740b | 2015-12-15 00:30:07 -0800 | [diff] [blame] | 239 | random_(clock_->TimeInMicroseconds()), |
Amit Hilbuch | 02d7d35 | 2019-07-02 21:04:57 +0000 | [diff] [blame] | 240 | audio_configured_(audio), |
| 241 | flexfec_ssrc_(flexfec_ssrc), |
| 242 | paced_sender_(paced_sender), |
| 243 | transport_sequence_number_allocator_(sequence_number_allocator), |
| 244 | transport_feedback_observer_(transport_feedback_observer), |
| 245 | transport_(transport), |
Sebastian Jansson | 1bca65b | 2018-10-10 09:58:08 +0200 | [diff] [blame] | 246 | sending_media_(true), // Default to sending media. |
| 247 | force_part_of_allocation_(false), |
nisse | 284542b | 2017-01-10 08:58:32 -0800 | [diff] [blame] | 248 | max_packet_size_(IP_PACKET_SIZE - 28), // Default is IP-v4/UDP. |
Danil Chapovalov | b3179c7 | 2018-03-22 10:13:07 +0100 | [diff] [blame] | 249 | last_payload_type_(-1), |
Amit Hilbuch | 02d7d35 | 2019-07-02 21:04:57 +0000 | [diff] [blame] | 250 | rtp_header_extension_map_(extmap_allow_mixed), |
| 251 | packet_history_(clock), |
| 252 | flexfec_packet_history_(clock), |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 253 | // Statistics |
Johannes Kron | 4a8a5e7 | 2018-09-26 09:57:48 +0200 | [diff] [blame] | 254 | send_delays_(), |
| 255 | max_delay_it_(send_delays_.end()), |
| 256 | sum_delays_ms_(0), |
Henrik Boström | 9fe1834 | 2019-05-16 18:38:20 +0200 | [diff] [blame] | 257 | total_packet_send_delay_ms_(0), |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 258 | rtp_stats_callback_(nullptr), |
| 259 | total_bitrate_sent_(kBitrateStatisticsWindowMs, |
| 260 | RateStatistics::kBpsScale), |
| 261 | nack_bitrate_sent_(kBitrateStatisticsWindowMs, RateStatistics::kBpsScale), |
Amit Hilbuch | 02d7d35 | 2019-07-02 21:04:57 +0000 | [diff] [blame] | 262 | send_side_delay_observer_(send_side_delay_observer), |
| 263 | event_log_(event_log), |
| 264 | send_packet_observer_(send_packet_observer), |
| 265 | bitrate_callback_(bitrate_callback), |
sprang@webrtc.org | ebad765 | 2013-12-05 14:29:02 +0000 | [diff] [blame] | 266 | // RTP variables |
sprang@webrtc.org | 6811b6e | 2013-12-13 09:46:59 +0000 | [diff] [blame] | 267 | sequence_number_forced_(false), |
danilchap | e5b4141 | 2016-08-22 03:39:23 -0700 | [diff] [blame] | 268 | last_rtp_timestamp_(0), |
sprang@webrtc.org | 6811b6e | 2013-12-13 09:46:59 +0000 | [diff] [blame] | 269 | capture_time_ms_(0), |
| 270 | last_timestamp_time_ms_(0), |
stefan@webrtc.org | 8b94e3d | 2014-07-17 16:10:14 +0000 | [diff] [blame] | 271 | media_has_been_sent_(false), |
sprang@webrtc.org | 6811b6e | 2013-12-13 09:46:59 +0000 | [diff] [blame] | 272 | last_packet_marker_bit_(false), |
sprang@webrtc.org | 6811b6e | 2013-12-13 09:46:59 +0000 | [diff] [blame] | 273 | csrcs_(), |
sprang@webrtc.org | 6811b6e | 2013-12-13 09:46:59 +0000 | [diff] [blame] | 274 | rtx_(kRtxOff), |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 275 | rtp_overhead_bytes_per_packet_(0), |
Mirko Bonadei | 999a72a | 2019-07-12 17:33:46 +0000 | [diff] [blame] | 276 | supports_bwe_extension_(false), |
Amit Hilbuch | 02d7d35 | 2019-07-02 21:04:57 +0000 | [diff] [blame] | 277 | retransmission_rate_limiter_(retransmission_rate_limiter), |
| 278 | overhead_observer_(overhead_observer), |
| 279 | populate_network2_timestamp_(populate_network2_timestamp), |
elad.alon | c3dfff3 | 2017-01-26 02:46:55 -0800 | [diff] [blame] | 280 | send_side_bwe_with_overhead_( |
Amit Hilbuch | 02d7d35 | 2019-07-02 21:04:57 +0000 | [diff] [blame] | 281 | field_trials.Lookup("WebRTC-SendSideBwe-WithOverhead") |
| 282 | .find("Enabled") == 0), |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 283 | pacer_legacy_packet_referencing_( |
| 284 | field_trials.Lookup("WebRTC-Pacer-LegacyPacketReferencing") |
Amit Hilbuch | 02d7d35 | 2019-07-02 21:04:57 +0000 | [diff] [blame] | 285 | .find("Disabled") != 0) { |
danilchap | 71fead2 | 2016-08-18 02:01:49 -0700 | [diff] [blame] | 286 | // This random initialization is not intended to be cryptographic strong. |
| 287 | timestamp_offset_ = random_.Rand<uint32_t>(); |
mikhal@webrtc.org | bda7f30 | 2013-03-15 23:21:52 +0000 | [diff] [blame] | 288 | // Random start, 16 bits. Can't be 0. |
danilchap | 47a740b | 2015-12-15 00:30:07 -0800 | [diff] [blame] | 289 | sequence_number_rtx_ = random_.Rand(1, kMaxInitRtpSeqNumber); |
| 290 | sequence_number_ = random_.Rand(1, kMaxInitRtpSeqNumber); |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 291 | |
| 292 | // Store FlexFEC packets in the packet history data structure, so they can |
| 293 | // be found when paced. |
Niels Möller | 59ab1cf | 2019-02-06 22:48:11 +0100 | [diff] [blame] | 294 | if (flexfec_ssrc_) { |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 295 | flexfec_packet_history_.SetStorePacketsStatus( |
Erik Språng | b9f5989 | 2019-07-19 13:52:13 +0200 | [diff] [blame^] | 296 | RtpPacketHistory::StorageMode::kStoreAndCull, |
| 297 | kMinFlexfecPacketsToStoreForPacing); |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 298 | } |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 299 | } |
| 300 | |
pwestin@webrtc.org | 0074187 | 2012-01-19 15:56:10 +0000 | [diff] [blame] | 301 | RTPSender::~RTPSender() { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 302 | // TODO(tommi): Use a thread checker to ensure the object is created and |
| 303 | // deleted on the same thread. At the moment this isn't possible due to |
| 304 | // voe::ChannelOwner in voice engine. To reproduce, run: |
| 305 | // voe_auto_test --automated --gtest_filter=*MixManyChannelsForStressOpus |
| 306 | |
| 307 | // TODO(tommi,holmer): We don't grab locks in the dtor before accessing member |
| 308 | // variables but we grab them in all other methods. (what's the design?) |
| 309 | // Start documenting what thread we're on in what method so that it's easier |
| 310 | // to understand performance attributes and possibly remove locks. |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 311 | } |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 312 | |
erikvarga | 2788373 | 2017-05-17 05:08:38 -0700 | [diff] [blame] | 313 | rtc::ArrayView<const RtpExtensionSize> RTPSender::FecExtensionSizes() { |
Ilya Nikolaevskiy | 1d037ae | 2018-03-15 15:46:17 +0100 | [diff] [blame] | 314 | return rtc::MakeArrayView(kFecOrPaddingExtensionSizes, |
| 315 | arraysize(kFecOrPaddingExtensionSizes)); |
| 316 | } |
| 317 | |
| 318 | rtc::ArrayView<const RtpExtensionSize> RTPSender::VideoExtensionSizes() { |
| 319 | return rtc::MakeArrayView(kVideoExtensionSizes, |
| 320 | arraysize(kVideoExtensionSizes)); |
erikvarga | 2788373 | 2017-05-17 05:08:38 -0700 | [diff] [blame] | 321 | } |
| 322 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 323 | uint16_t RTPSender::ActualSendBitrateKbit() const { |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 324 | rtc::CritScope cs(&statistics_crit_); |
| 325 | return static_cast<uint16_t>( |
| 326 | total_bitrate_sent_.Rate(clock_->TimeInMilliseconds()).value_or(0) / |
| 327 | 1000); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 328 | } |
| 329 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 330 | uint32_t RTPSender::NackOverheadRate() const { |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 331 | rtc::CritScope cs(&statistics_crit_); |
| 332 | return nack_bitrate_sent_.Rate(clock_->TimeInMilliseconds()).value_or(0); |
stefan@webrtc.org | d0bdab0 | 2011-10-14 14:24:54 +0000 | [diff] [blame] | 333 | } |
| 334 | |
Johannes Kron | 9190b82 | 2018-10-29 11:22:05 +0100 | [diff] [blame] | 335 | void RTPSender::SetExtmapAllowMixed(bool extmap_allow_mixed) { |
| 336 | rtc::CritScope lock(&send_critsect_); |
| 337 | rtp_header_extension_map_.SetExtmapAllowMixed(extmap_allow_mixed); |
| 338 | } |
| 339 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame] | 340 | int32_t RTPSender::RegisterRtpHeaderExtension(RTPExtensionType type, |
| 341 | uint8_t id) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 342 | rtc::CritScope lock(&send_critsect_); |
Mirko Bonadei | 999a72a | 2019-07-12 17:33:46 +0000 | [diff] [blame] | 343 | bool registered = rtp_header_extension_map_.RegisterByType(id, type); |
| 344 | supports_bwe_extension_ = HasBweExtension(rtp_header_extension_map_); |
| 345 | return registered ? 0 : -1; |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 346 | } |
| 347 | |
Danil Chapovalov | 585d1aa | 2018-09-14 18:29:32 +0200 | [diff] [blame] | 348 | bool RTPSender::RegisterRtpHeaderExtension(const std::string& uri, int id) { |
| 349 | rtc::CritScope lock(&send_critsect_); |
Mirko Bonadei | 999a72a | 2019-07-12 17:33:46 +0000 | [diff] [blame] | 350 | bool registered = rtp_header_extension_map_.RegisterByUri(id, uri); |
| 351 | supports_bwe_extension_ = HasBweExtension(rtp_header_extension_map_); |
| 352 | return registered; |
Danil Chapovalov | 585d1aa | 2018-09-14 18:29:32 +0200 | [diff] [blame] | 353 | } |
| 354 | |
stefan | 53b6cc3 | 2017-02-03 08:13:57 -0800 | [diff] [blame] | 355 | bool RTPSender::IsRtpHeaderExtensionRegistered(RTPExtensionType type) const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 356 | rtc::CritScope lock(&send_critsect_); |
guoweis@webrtc.org | 4536289 | 2015-03-04 22:55:15 +0000 | [diff] [blame] | 357 | return rtp_header_extension_map_.IsRegistered(type); |
| 358 | } |
| 359 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame] | 360 | int32_t RTPSender::DeregisterRtpHeaderExtension(RTPExtensionType type) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 361 | rtc::CritScope lock(&send_critsect_); |
Mirko Bonadei | 999a72a | 2019-07-12 17:33:46 +0000 | [diff] [blame] | 362 | int32_t deregistered = rtp_header_extension_map_.Deregister(type); |
| 363 | supports_bwe_extension_ = HasBweExtension(rtp_header_extension_map_); |
| 364 | return deregistered; |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 365 | } |
| 366 | |
nisse | 284542b | 2017-01-10 08:58:32 -0800 | [diff] [blame] | 367 | void RTPSender::SetMaxRtpPacketSize(size_t max_packet_size) { |
kwiberg | ee89e78 | 2017-08-09 17:22:01 -0700 | [diff] [blame] | 368 | RTC_DCHECK_GE(max_packet_size, 100); |
| 369 | RTC_DCHECK_LE(max_packet_size, IP_PACKET_SIZE); |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 370 | rtc::CritScope lock(&send_critsect_); |
nisse | 284542b | 2017-01-10 08:58:32 -0800 | [diff] [blame] | 371 | max_packet_size_ = max_packet_size; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 372 | } |
| 373 | |
nisse | 284542b | 2017-01-10 08:58:32 -0800 | [diff] [blame] | 374 | size_t RTPSender::MaxRtpPacketSize() const { |
| 375 | return max_packet_size_; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 376 | } |
| 377 | |
pbos@webrtc.org | 0b0c241 | 2015-01-13 14:15:15 +0000 | [diff] [blame] | 378 | void RTPSender::SetRtxStatus(int mode) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 379 | rtc::CritScope lock(&send_critsect_); |
mikhal@webrtc.org | bda7f30 | 2013-03-15 23:21:52 +0000 | [diff] [blame] | 380 | rtx_ = mode; |
stefan@webrtc.org | ef92755 | 2014-06-05 08:25:29 +0000 | [diff] [blame] | 381 | } |
| 382 | |
pbos@webrtc.org | 0b0c241 | 2015-01-13 14:15:15 +0000 | [diff] [blame] | 383 | int RTPSender::RtxStatus() const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 384 | rtc::CritScope lock(&send_critsect_); |
pbos@webrtc.org | 0b0c241 | 2015-01-13 14:15:15 +0000 | [diff] [blame] | 385 | return rtx_; |
| 386 | } |
| 387 | |
stefan@webrtc.org | ef92755 | 2014-06-05 08:25:29 +0000 | [diff] [blame] | 388 | void RTPSender::SetRtxSsrc(uint32_t ssrc) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 389 | rtc::CritScope lock(&send_critsect_); |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 390 | ssrc_rtx_.emplace(ssrc); |
pwestin@webrtc.org | 8281e7d | 2012-01-10 14:09:18 +0000 | [diff] [blame] | 391 | } |
| 392 | |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 393 | uint32_t RTPSender::RtxSsrc() const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 394 | rtc::CritScope lock(&send_critsect_); |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 395 | RTC_DCHECK(ssrc_rtx_); |
| 396 | return *ssrc_rtx_; |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 397 | } |
| 398 | |
Shao Changbin | e62202f | 2015-04-21 20:24:50 +0800 | [diff] [blame] | 399 | void RTPSender::SetRtxPayloadType(int payload_type, |
| 400 | int associated_payload_type) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 401 | rtc::CritScope lock(&send_critsect_); |
henrikg | 91d6ede | 2015-09-17 00:24:34 -0700 | [diff] [blame] | 402 | RTC_DCHECK_LE(payload_type, 127); |
| 403 | RTC_DCHECK_LE(associated_payload_type, 127); |
Shao Changbin | e62202f | 2015-04-21 20:24:50 +0800 | [diff] [blame] | 404 | if (payload_type < 0) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 405 | RTC_LOG(LS_ERROR) << "Invalid RTX payload type: " << payload_type << "."; |
Shao Changbin | e62202f | 2015-04-21 20:24:50 +0800 | [diff] [blame] | 406 | return; |
| 407 | } |
| 408 | |
| 409 | rtx_payload_type_map_[associated_payload_type] = payload_type; |
Åsa Persson | 6ae2572 | 2015-04-13 17:48:08 +0200 | [diff] [blame] | 410 | } |
| 411 | |
philipel | a1ed0b3 | 2016-06-01 06:31:17 -0700 | [diff] [blame] | 412 | size_t RTPSender::TrySendRedundantPayloads(size_t bytes_to_send, |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 413 | const PacedPacketInfo& pacing_info) { |
andresp@webrtc.org | 817a034 | 2014-08-14 08:24:47 +0000 | [diff] [blame] | 414 | { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 415 | rtc::CritScope lock(&send_critsect_); |
Peter Boström | fc968a2 | 2016-02-19 16:14:37 +0100 | [diff] [blame] | 416 | if (!sending_media_) |
| 417 | return 0; |
andresp@webrtc.org | 817a034 | 2014-08-14 08:24:47 +0000 | [diff] [blame] | 418 | if ((rtx_ & kRtxRedundantPayloads) == 0) |
| 419 | return 0; |
| 420 | } |
| 421 | |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 422 | int bytes_left = static_cast<int>(bytes_to_send); |
Erik Språng | 214f543 | 2019-06-20 15:09:58 +0200 | [diff] [blame] | 423 | while (bytes_left >= kMinPayloadPaddingBytes) { |
Erik Språng | 21f2fc9 | 2019-07-16 21:09:14 +0200 | [diff] [blame] | 424 | std::unique_ptr<RtpPacketToSend> packet = |
| 425 | packet_history_.GetPayloadPaddingPacket(); |
Erik Språng | 4ffed7c | 2019-05-28 11:18:04 +0200 | [diff] [blame] | 426 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 427 | if (!packet) |
stefan@webrtc.org | 7e9315b | 2013-12-04 10:24:26 +0000 | [diff] [blame] | 428 | break; |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 429 | size_t payload_size = packet->payload_size(); |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 430 | if (!PrepareAndSendPacket(std::move(packet), true, false, pacing_info)) |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 431 | break; |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 432 | bytes_left -= payload_size; |
stefan@webrtc.org | 7e9315b | 2013-12-04 10:24:26 +0000 | [diff] [blame] | 433 | } |
| 434 | return bytes_to_send - bytes_left; |
| 435 | } |
| 436 | |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 437 | size_t RTPSender::SendPadData(size_t bytes, |
| 438 | const PacedPacketInfo& pacing_info) { |
stefan | 53b6cc3 | 2017-02-03 08:13:57 -0800 | [diff] [blame] | 439 | size_t padding_bytes_in_packet; |
erikvarga | 76a5593 | 2017-05-17 07:50:17 -0700 | [diff] [blame] | 440 | size_t max_payload_size = max_packet_size_ - RtpHeaderLength(); |
erikvarga | 2788373 | 2017-05-17 05:08:38 -0700 | [diff] [blame] | 441 | |
stefan | 53b6cc3 | 2017-02-03 08:13:57 -0800 | [diff] [blame] | 442 | if (audio_configured_) { |
| 443 | // Allow smaller padding packets for audio. |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 444 | padding_bytes_in_packet = |
| 445 | rtc::SafeClamp(bytes, kMinAudioPaddingLength, |
| 446 | rtc::SafeMin(max_payload_size, kMaxPaddingLength)); |
stefan | 53b6cc3 | 2017-02-03 08:13:57 -0800 | [diff] [blame] | 447 | } else { |
| 448 | // Always send full padding packets. This is accounted for by the |
| 449 | // RtpPacketSender, which will make sure we don't send too much padding even |
| 450 | // if a single packet is larger than requested. |
| 451 | // We do this to avoid frequently sending small packets on higher bitrates. |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 452 | padding_bytes_in_packet = rtc::SafeMin(max_payload_size, kMaxPaddingLength); |
stefan | 53b6cc3 | 2017-02-03 08:13:57 -0800 | [diff] [blame] | 453 | } |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 454 | size_t bytes_sent = 0; |
danilchap | 9006987 | 2016-12-14 06:16:33 -0800 | [diff] [blame] | 455 | while (bytes_sent < bytes) { |
| 456 | int64_t now_ms = clock_->TimeInMilliseconds(); |
stefan@webrtc.org | 8ccb9f9 | 2013-06-19 14:13:42 +0000 | [diff] [blame] | 457 | uint32_t ssrc; |
danilchap | 9006987 | 2016-12-14 06:16:33 -0800 | [diff] [blame] | 458 | uint32_t timestamp; |
| 459 | int64_t capture_time_ms; |
stefan@webrtc.org | 8ccb9f9 | 2013-06-19 14:13:42 +0000 | [diff] [blame] | 460 | uint16_t sequence_number; |
andresp@webrtc.org | 817a034 | 2014-08-14 08:24:47 +0000 | [diff] [blame] | 461 | int payload_type; |
pbos@webrtc.org | 63c60ed | 2014-07-16 09:37:29 +0000 | [diff] [blame] | 462 | bool over_rtx; |
stefan@webrtc.org | 8ccb9f9 | 2013-06-19 14:13:42 +0000 | [diff] [blame] | 463 | { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 464 | rtc::CritScope lock(&send_critsect_); |
Peter Boström | fc968a2 | 2016-02-19 16:14:37 +0100 | [diff] [blame] | 465 | if (!sending_media_) |
danilchap | 9006987 | 2016-12-14 06:16:33 -0800 | [diff] [blame] | 466 | break; |
| 467 | timestamp = last_rtp_timestamp_; |
| 468 | capture_time_ms = capture_time_ms_; |
stefan@webrtc.org | 8ccb9f9 | 2013-06-19 14:13:42 +0000 | [diff] [blame] | 469 | if (rtx_ == kRtxOff) { |
Danil Chapovalov | b3179c7 | 2018-03-22 10:13:07 +0100 | [diff] [blame] | 470 | if (last_payload_type_ == -1) |
stefan | e35f89a | 2017-02-01 09:06:25 -0800 | [diff] [blame] | 471 | break; |
stefan | 53b6cc3 | 2017-02-03 08:13:57 -0800 | [diff] [blame] | 472 | // Without RTX we can't send padding in the middle of frames. |
| 473 | // For audio marker bits doesn't mark the end of a frame and frames |
| 474 | // are usually a single packet, so for now we don't apply this rule |
| 475 | // for audio. |
| 476 | if (!audio_configured_ && !last_packet_marker_bit_) { |
| 477 | break; |
| 478 | } |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 479 | if (!ssrc_) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 480 | RTC_LOG(LS_ERROR) << "SSRC unset."; |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | RTC_DCHECK(ssrc_); |
| 485 | ssrc = *ssrc_; |
| 486 | |
stefan@webrtc.org | 8ccb9f9 | 2013-06-19 14:13:42 +0000 | [diff] [blame] | 487 | sequence_number = sequence_number_; |
| 488 | ++sequence_number_; |
Danil Chapovalov | b3179c7 | 2018-03-22 10:13:07 +0100 | [diff] [blame] | 489 | payload_type = last_payload_type_; |
pbos@webrtc.org | 63c60ed | 2014-07-16 09:37:29 +0000 | [diff] [blame] | 490 | over_rtx = false; |
stefan@webrtc.org | 8ccb9f9 | 2013-06-19 14:13:42 +0000 | [diff] [blame] | 491 | } else { |
Stefan Holmer | f5dca48 | 2016-01-27 12:58:51 +0100 | [diff] [blame] | 492 | // Without abs-send-time or transport sequence number a media packet |
| 493 | // must be sent before padding so that the timestamps used for |
| 494 | // estimation are correct. |
| 495 | if (!media_has_been_sent_ && |
danilchap | 9006987 | 2016-12-14 06:16:33 -0800 | [diff] [blame] | 496 | !(rtp_header_extension_map_.IsRegistered(AbsoluteSendTime::kId) || |
| 497 | (rtp_header_extension_map_.IsRegistered( |
| 498 | TransportSequenceNumber::kId) && |
| 499 | transport_sequence_number_allocator_))) { |
| 500 | break; |
Stefan Holmer | f5dca48 | 2016-01-27 12:58:51 +0100 | [diff] [blame] | 501 | } |
Stefan Holmer | 586b19b | 2015-09-18 11:14:31 +0200 | [diff] [blame] | 502 | // Only change change the timestamp of padding packets sent over RTX. |
| 503 | // Padding only packets over RTP has to be sent as part of a media |
| 504 | // frame (and therefore the same timestamp). |
| 505 | if (last_timestamp_time_ms_ > 0) { |
| 506 | timestamp += |
danilchap | 9006987 | 2016-12-14 06:16:33 -0800 | [diff] [blame] | 507 | (now_ms - last_timestamp_time_ms_) * kTimestampTicksPerMs; |
| 508 | capture_time_ms += (now_ms - last_timestamp_time_ms_); |
Stefan Holmer | 586b19b | 2015-09-18 11:14:31 +0200 | [diff] [blame] | 509 | } |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 510 | if (!ssrc_rtx_) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 511 | RTC_LOG(LS_ERROR) << "RTX SSRC unset."; |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 512 | return 0; |
| 513 | } |
| 514 | RTC_DCHECK(ssrc_rtx_); |
| 515 | ssrc = *ssrc_rtx_; |
stefan@webrtc.org | 8ccb9f9 | 2013-06-19 14:13:42 +0000 | [diff] [blame] | 516 | sequence_number = sequence_number_rtx_; |
| 517 | ++sequence_number_rtx_; |
Stefan Holmer | 1088001 | 2016-02-03 13:29:59 +0100 | [diff] [blame] | 518 | payload_type = rtx_payload_type_map_.begin()->second; |
pbos@webrtc.org | 63c60ed | 2014-07-16 09:37:29 +0000 | [diff] [blame] | 519 | over_rtx = true; |
stefan@webrtc.org | 8ccb9f9 | 2013-06-19 14:13:42 +0000 | [diff] [blame] | 520 | } |
| 521 | } |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 522 | |
danilchap | 9006987 | 2016-12-14 06:16:33 -0800 | [diff] [blame] | 523 | RtpPacketToSend padding_packet(&rtp_header_extension_map_); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 524 | padding_packet.SetPayloadType(payload_type); |
| 525 | padding_packet.SetMarker(false); |
| 526 | padding_packet.SetSequenceNumber(sequence_number); |
| 527 | padding_packet.SetTimestamp(timestamp); |
| 528 | padding_packet.SetSsrc(ssrc); |
| 529 | |
pbos@webrtc.org | 72491b9 | 2014-07-10 16:24:54 +0000 | [diff] [blame] | 530 | if (capture_time_ms > 0) { |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 531 | padding_packet.SetExtension<TransmissionOffset>( |
danilchap | 9006987 | 2016-12-14 06:16:33 -0800 | [diff] [blame] | 532 | (now_ms - capture_time_ms) * kTimestampTicksPerMs); |
pwestin@webrtc.org | 12d97f6 | 2012-01-05 10:54:44 +0000 | [diff] [blame] | 533 | } |
Danil Chapovalov | f3ba648 | 2017-06-12 15:43:55 +0200 | [diff] [blame] | 534 | padding_packet.SetExtension<AbsoluteSendTime>( |
| 535 | AbsoluteSendTime::MsTo24Bits(now_ms)); |
stefan | 1d8a506 | 2015-10-02 03:39:33 -0700 | [diff] [blame] | 536 | PacketOptions options; |
Petter Strandmark | 26bc669 | 2018-05-29 08:43:35 +0200 | [diff] [blame] | 537 | // Padding packets are never retransmissions. |
| 538 | options.is_retransmit = false; |
Sebastian Jansson | 30e2d6e | 2018-10-09 18:27:36 +0200 | [diff] [blame] | 539 | bool has_transport_seq_num; |
| 540 | { |
| 541 | rtc::CritScope lock(&send_critsect_); |
| 542 | has_transport_seq_num = |
| 543 | UpdateTransportSequenceNumber(&padding_packet, &options.packet_id); |
Sebastian Jansson | 1bca65b | 2018-10-10 09:58:08 +0200 | [diff] [blame] | 544 | options.included_in_allocation = |
| 545 | has_transport_seq_num || force_part_of_allocation_; |
| 546 | options.included_in_feedback = has_transport_seq_num; |
Sebastian Jansson | 30e2d6e | 2018-10-09 18:27:36 +0200 | [diff] [blame] | 547 | } |
Danil Chapovalov | f7fcaf0 | 2018-10-10 14:56:01 +0200 | [diff] [blame] | 548 | padding_packet.SetPadding(padding_bytes_in_packet); |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 549 | if (has_transport_seq_num) { |
| 550 | AddPacketToTransportFeedback(options.packet_id, padding_packet, |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 551 | pacing_info); |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 552 | } |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 553 | |
philipel | 32d0010 | 2017-02-27 02:18:46 -0800 | [diff] [blame] | 554 | if (!SendPacketToNetwork(padding_packet, options, pacing_info)) |
stefan | f116bd0 | 2015-10-27 08:29:42 -0700 | [diff] [blame] | 555 | break; |
| 556 | |
stefan@webrtc.org | 508a84b | 2013-06-17 12:53:37 +0000 | [diff] [blame] | 557 | bytes_sent += padding_bytes_in_packet; |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 558 | UpdateRtpStats(padding_packet, over_rtx, false); |
pwestin@webrtc.org | 12d97f6 | 2012-01-05 10:54:44 +0000 | [diff] [blame] | 559 | } |
pbos@webrtc.org | 72491b9 | 2014-07-10 16:24:54 +0000 | [diff] [blame] | 560 | |
stefan@webrtc.org | 508a84b | 2013-06-17 12:53:37 +0000 | [diff] [blame] | 561 | return bytes_sent; |
pwestin@webrtc.org | 12d97f6 | 2012-01-05 10:54:44 +0000 | [diff] [blame] | 562 | } |
| 563 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame] | 564 | void RTPSender::SetStorePacketsStatus(bool enable, uint16_t number_to_store) { |
Erik Språng | b9f5989 | 2019-07-19 13:52:13 +0200 | [diff] [blame^] | 565 | packet_history_.SetStorePacketsStatus( |
| 566 | enable ? RtpPacketHistory::StorageMode::kStoreAndCull |
| 567 | : RtpPacketHistory::StorageMode::kDisabled, |
| 568 | number_to_store); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 569 | } |
| 570 | |
pwestin@webrtc.org | b0061f9 | 2013-04-27 00:41:08 +0000 | [diff] [blame] | 571 | bool RTPSender::StorePackets() const { |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 572 | return packet_history_.GetStorageMode() != |
| 573 | RtpPacketHistory::StorageMode::kDisabled; |
pwestin@webrtc.org | b0061f9 | 2013-04-27 00:41:08 +0000 | [diff] [blame] | 574 | } |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 575 | |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 576 | int32_t RTPSender::ReSendPacket(uint16_t packet_id) { |
| 577 | // Try to find packet in RTP packet history. Also verify RTT here, so that we |
| 578 | // don't retransmit too often. |
Danil Chapovalov | d264df5 | 2018-06-14 12:59:38 +0200 | [diff] [blame] | 579 | absl::optional<RtpPacketHistory::PacketState> stored_packet = |
Danil Chapovalov | 6c78ff4 | 2018-10-16 11:01:05 +0200 | [diff] [blame] | 580 | packet_history_.GetPacketState(packet_id); |
Erik Språng | 0f4f055 | 2019-05-08 10:15:05 -0700 | [diff] [blame] | 581 | if (!stored_packet || stored_packet->pending_transmission) { |
| 582 | // Packet not found or already queued for retransmission, ignore. |
asapersson@webrtc.org | 83ed0a4 | 2012-04-23 12:43:05 +0000 | [diff] [blame] | 583 | return 0; |
pwestin@webrtc.org | 8281e7d | 2012-01-10 14:09:18 +0000 | [diff] [blame] | 584 | } |
Oleh Prypin | 5a98049 | 2018-03-09 12:27:24 +0000 | [diff] [blame] | 585 | |
Per Kjellander | 252725d | 2019-02-20 13:14:34 +0100 | [diff] [blame] | 586 | const int32_t packet_size = static_cast<int32_t>(stored_packet->packet_size); |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 587 | const bool rtx = (RtxStatus() & kRtxRetransmitted) > 0; |
Erik Språng | 7bb37b8 | 2018-03-09 09:52:59 +0100 | [diff] [blame] | 588 | |
Oleh Prypin | 5a98049 | 2018-03-09 12:27:24 +0000 | [diff] [blame] | 589 | if (paced_sender_) { |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 590 | if (pacer_legacy_packet_referencing_) { |
| 591 | // Check if we're overusing retransmission bitrate. |
| 592 | // TODO(sprang): Add histograms for nack success or failure reasons. |
| 593 | if (retransmission_rate_limiter_ && |
| 594 | !retransmission_rate_limiter_->TryUseRate(packet_size)) { |
| 595 | return -1; |
| 596 | } |
| 597 | |
| 598 | // Mark packet as being in pacer queue again, to prevent duplicates. |
| 599 | if (!packet_history_.SetPendingTransmission(packet_id)) { |
| 600 | // Packet has already been removed from history, return early. |
| 601 | return 0; |
| 602 | } |
| 603 | |
| 604 | paced_sender_->InsertPacket( |
| 605 | RtpPacketSender::kNormalPriority, stored_packet->ssrc, |
| 606 | stored_packet->rtp_sequence_number, stored_packet->capture_time_ms, |
| 607 | stored_packet->packet_size, true); |
| 608 | } else { |
| 609 | std::unique_ptr<RtpPacketToSend> packet = |
| 610 | packet_history_.GetPacketAndMarkAsPending( |
| 611 | packet_id, [&](const RtpPacketToSend& stored_packet) { |
| 612 | // Check if we're overusing retransmission bitrate. |
| 613 | // TODO(sprang): Add histograms for nack success or failure |
| 614 | // reasons. |
| 615 | std::unique_ptr<RtpPacketToSend> retransmit_packet; |
| 616 | if (retransmission_rate_limiter_ && |
| 617 | !retransmission_rate_limiter_->TryUseRate(packet_size)) { |
| 618 | return retransmit_packet; |
| 619 | } |
| 620 | if (rtx) { |
| 621 | retransmit_packet = BuildRtxPacket(stored_packet); |
| 622 | } else { |
| 623 | retransmit_packet = |
| 624 | absl::make_unique<RtpPacketToSend>(stored_packet); |
| 625 | } |
| 626 | retransmit_packet->set_retransmitted_sequence_number( |
| 627 | stored_packet.SequenceNumber()); |
| 628 | return retransmit_packet; |
| 629 | }); |
| 630 | if (!packet) { |
| 631 | return -1; |
| 632 | } |
| 633 | packet->set_packet_type(RtpPacketToSend::Type::kRetransmission); |
| 634 | paced_sender_->EnqueuePacket(std::move(packet)); |
Erik Språng | 0f4f055 | 2019-05-08 10:15:05 -0700 | [diff] [blame] | 635 | } |
| 636 | |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 637 | return packet_size; |
Oleh Prypin | 5a98049 | 2018-03-09 12:27:24 +0000 | [diff] [blame] | 638 | } |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 639 | |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 640 | // TODO(sprang): Replace this whole code-path with a pass-through pacer. |
| 641 | // Check if we're overusing retransmission bitrate. |
| 642 | // TODO(sprang): Add histograms for nack success or failure reasons. |
| 643 | if (retransmission_rate_limiter_ && |
| 644 | !retransmission_rate_limiter_->TryUseRate(packet_size)) { |
| 645 | return -1; |
| 646 | } |
| 647 | |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 648 | std::unique_ptr<RtpPacketToSend> packet = |
Danil Chapovalov | 6c78ff4 | 2018-10-16 11:01:05 +0200 | [diff] [blame] | 649 | packet_history_.GetPacketAndSetSendTime(packet_id); |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 650 | if (!packet) { |
| 651 | // Packet could theoretically time out between the first check and this one. |
| 652 | return 0; |
| 653 | } |
| 654 | |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 655 | if (!PrepareAndSendPacket(std::move(packet), rtx, true, PacedPacketInfo())) |
sprang | 867fb52 | 2015-08-03 04:38:41 -0700 | [diff] [blame] | 656 | return -1; |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 657 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 658 | return packet_size; |
pwestin@webrtc.org | 8281e7d | 2012-01-10 14:09:18 +0000 | [diff] [blame] | 659 | } |
| 660 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 661 | bool RTPSender::SendPacketToNetwork(const RtpPacketToSend& packet, |
philipel | 32d0010 | 2017-02-27 02:18:46 -0800 | [diff] [blame] | 662 | const PacketOptions& options, |
| 663 | const PacedPacketInfo& pacing_info) { |
pwestin@webrtc.org | b0061f9 | 2013-04-27 00:41:08 +0000 | [diff] [blame] | 664 | int bytes_sent = -1; |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 665 | if (transport_) { |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 666 | UpdateRtpOverhead(packet); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 667 | bytes_sent = transport_->SendRtp(packet.data(), packet.size(), options) |
| 668 | ? static_cast<int>(packet.size()) |
stefan | 1d8a506 | 2015-10-02 03:39:33 -0700 | [diff] [blame] | 669 | : -1; |
terelius | 429c345 | 2016-01-21 05:42:04 -0800 | [diff] [blame] | 670 | if (event_log_ && bytes_sent > 0) { |
Karl Wiberg | 918f50c | 2018-07-05 11:40:33 +0200 | [diff] [blame] | 671 | event_log_->Log(absl::make_unique<RtcEventRtpPacketOutgoing>( |
Elad Alon | 4a87e1c | 2017-10-03 16:11:34 +0200 | [diff] [blame] | 672 | packet, pacing_info.probe_cluster_id)); |
terelius | 429c345 | 2016-01-21 05:42:04 -0800 | [diff] [blame] | 673 | } |
pwestin@webrtc.org | 8281e7d | 2012-01-10 14:09:18 +0000 | [diff] [blame] | 674 | } |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 675 | // TODO(pwestin): Add a separate bitrate for sent bitrate after pacer. |
asapersson@webrtc.org | 0b3c35a | 2012-01-16 11:06:31 +0000 | [diff] [blame] | 676 | if (bytes_sent <= 0) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 677 | RTC_LOG(LS_WARNING) << "Transport failed to send packet."; |
pwestin@webrtc.org | b0061f9 | 2013-04-27 00:41:08 +0000 | [diff] [blame] | 678 | return false; |
pwestin@webrtc.org | 8281e7d | 2012-01-10 14:09:18 +0000 | [diff] [blame] | 679 | } |
pwestin@webrtc.org | b0061f9 | 2013-04-27 00:41:08 +0000 | [diff] [blame] | 680 | return true; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 681 | } |
| 682 | |
Danil Chapovalov | 2800d74 | 2016-08-26 18:48:46 +0200 | [diff] [blame] | 683 | void RTPSender::OnReceivedNack( |
| 684 | const std::vector<uint16_t>& nack_sequence_numbers, |
| 685 | int64_t avg_rtt) { |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 686 | packet_history_.SetRtt(5 + avg_rtt); |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 687 | for (uint16_t seq_no : nack_sequence_numbers) { |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 688 | const int32_t bytes_sent = ReSendPacket(seq_no); |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 689 | if (bytes_sent < 0) { |
pwestin@webrtc.org | 8281e7d | 2012-01-10 14:09:18 +0000 | [diff] [blame] | 690 | // Failed to send one Sequence number. Give up the rest in this nack. |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 691 | RTC_LOG(LS_WARNING) << "Failed resending RTP packet " << seq_no |
| 692 | << ", Discard rest of packets."; |
pwestin@webrtc.org | 8281e7d | 2012-01-10 14:09:18 +0000 | [diff] [blame] | 693 | break; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 694 | } |
pwestin@webrtc.org | 8281e7d | 2012-01-10 14:09:18 +0000 | [diff] [blame] | 695 | } |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 696 | } |
| 697 | |
pwestin@webrtc.org | b0061f9 | 2013-04-27 00:41:08 +0000 | [diff] [blame] | 698 | // Called from pacer when we can send the packet. |
Erik Språng | d287962 | 2019-05-10 08:29:01 -0700 | [diff] [blame] | 699 | RtpPacketSendResult RTPSender::TimeToSendPacket( |
| 700 | uint32_t ssrc, |
| 701 | uint16_t sequence_number, |
| 702 | int64_t capture_time_ms, |
| 703 | bool retransmission, |
| 704 | const PacedPacketInfo& pacing_info) { |
| 705 | if (!SendingMedia()) { |
| 706 | return RtpPacketSendResult::kPacketNotFound; |
| 707 | } |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 708 | |
| 709 | std::unique_ptr<RtpPacketToSend> packet; |
| 710 | if (ssrc == SSRC()) { |
Danil Chapovalov | 6c78ff4 | 2018-10-16 11:01:05 +0200 | [diff] [blame] | 711 | packet = packet_history_.GetPacketAndSetSendTime(sequence_number); |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 712 | } else if (ssrc == FlexfecSsrc()) { |
Danil Chapovalov | 6c78ff4 | 2018-10-16 11:01:05 +0200 | [diff] [blame] | 713 | packet = flexfec_packet_history_.GetPacketAndSetSendTime(sequence_number); |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 714 | } |
| 715 | |
Stefan Holmer | a246cfb | 2016-08-23 17:51:42 +0200 | [diff] [blame] | 716 | if (!packet) { |
Erik Språng | d287962 | 2019-05-10 08:29:01 -0700 | [diff] [blame] | 717 | // Packet cannot be found or was resent too recently. |
| 718 | return RtpPacketSendResult::kPacketNotFound; |
Stefan Holmer | a246cfb | 2016-08-23 17:51:42 +0200 | [diff] [blame] | 719 | } |
asapersson | 35151f3 | 2016-05-02 23:44:01 -0700 | [diff] [blame] | 720 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 721 | return PrepareAndSendPacket( |
Erik Språng | d287962 | 2019-05-10 08:29:01 -0700 | [diff] [blame] | 722 | std::move(packet), |
| 723 | retransmission && (RtxStatus() & kRtxRetransmitted) > 0, |
| 724 | retransmission, pacing_info) |
| 725 | ? RtpPacketSendResult::kSuccess |
| 726 | : RtpPacketSendResult::kTransportUnavailable; |
stefan@webrtc.org | 7e9315b | 2013-12-04 10:24:26 +0000 | [diff] [blame] | 727 | } |
asapersson@webrtc.org | 0b3c35a | 2012-01-16 11:06:31 +0000 | [diff] [blame] | 728 | |
Erik Språng | 9c771c2 | 2019-06-17 16:31:53 +0200 | [diff] [blame] | 729 | // Called from pacer when we can send the packet. |
| 730 | bool RTPSender::TrySendPacket(RtpPacketToSend* packet, |
| 731 | const PacedPacketInfo& pacing_info) { |
| 732 | RTC_DCHECK(packet); |
| 733 | |
| 734 | const uint32_t packet_ssrc = packet->Ssrc(); |
| 735 | const auto packet_type = packet->packet_type(); |
| 736 | RTC_DCHECK(packet_type.has_value()); |
| 737 | |
| 738 | PacketOptions options; |
| 739 | bool is_media = false; |
| 740 | bool is_rtx = false; |
| 741 | { |
| 742 | rtc::CritScope lock(&send_critsect_); |
| 743 | if (!sending_media_) { |
| 744 | return false; |
| 745 | } |
| 746 | |
| 747 | switch (*packet_type) { |
| 748 | case RtpPacketToSend::Type::kAudio: |
| 749 | case RtpPacketToSend::Type::kVideo: |
| 750 | if (packet_ssrc != ssrc_) { |
| 751 | return false; |
| 752 | } |
| 753 | is_media = true; |
| 754 | break; |
| 755 | case RtpPacketToSend::Type::kRetransmission: |
| 756 | case RtpPacketToSend::Type::kPadding: |
| 757 | // Both padding and retransmission must be on either the media or the |
| 758 | // RTX stream. |
| 759 | if (packet_ssrc == ssrc_rtx_) { |
| 760 | is_rtx = true; |
| 761 | } else if (packet_ssrc != ssrc_) { |
| 762 | return false; |
| 763 | } |
| 764 | break; |
| 765 | case RtpPacketToSend::Type::kForwardErrorCorrection: |
| 766 | // FlexFEC is on separate SSRC, ULPFEC uses media SSRC. |
| 767 | if (packet_ssrc != ssrc_ && packet_ssrc != flexfec_ssrc_) { |
| 768 | return false; |
| 769 | } |
| 770 | break; |
| 771 | } |
| 772 | |
| 773 | options.included_in_allocation = force_part_of_allocation_; |
| 774 | } |
| 775 | |
| 776 | // Bug webrtc:7859. While FEC is invoked from rtp_sender_video, and not after |
| 777 | // the pacer, these modifications of the header below are happening after the |
| 778 | // FEC protection packets are calculated. This will corrupt recovered packets |
| 779 | // at the same place. It's not an issue for extensions, which are present in |
| 780 | // all the packets (their content just may be incorrect on recovered packets). |
| 781 | // In case of VideoTimingExtension, since it's present not in every packet, |
| 782 | // data after rtp header may be corrupted if these packets are protected by |
| 783 | // the FEC. |
| 784 | int64_t now_ms = clock_->TimeInMilliseconds(); |
| 785 | int64_t diff_ms = now_ms - packet->capture_time_ms(); |
Erik Språng | 0f6191d | 2019-07-15 20:33:40 +0200 | [diff] [blame] | 786 | if (packet->IsExtensionReserved<TransmissionOffset>()) { |
| 787 | packet->SetExtension<TransmissionOffset>(kTimestampTicksPerMs * diff_ms); |
| 788 | } |
| 789 | if (packet->IsExtensionReserved<AbsoluteSendTime>()) { |
| 790 | packet->SetExtension<AbsoluteSendTime>( |
| 791 | AbsoluteSendTime::MsTo24Bits(now_ms)); |
| 792 | } |
Erik Språng | 9c771c2 | 2019-06-17 16:31:53 +0200 | [diff] [blame] | 793 | |
| 794 | if (packet->HasExtension<VideoTimingExtension>()) { |
| 795 | if (populate_network2_timestamp_) { |
| 796 | packet->set_network2_time_ms(now_ms); |
| 797 | } else { |
| 798 | packet->set_pacer_exit_time_ms(now_ms); |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | // Downstream code actually uses this flag to distinguish between media and |
| 803 | // everything else. |
| 804 | options.is_retransmit = !is_media; |
| 805 | if (auto packet_id = packet->GetExtension<TransportSequenceNumber>()) { |
| 806 | options.packet_id = *packet_id; |
| 807 | options.included_in_feedback = true; |
| 808 | options.included_in_allocation = true; |
| 809 | AddPacketToTransportFeedback(*packet_id, *packet, pacing_info); |
| 810 | } |
| 811 | |
| 812 | options.application_data.assign(packet->application_data().begin(), |
| 813 | packet->application_data().end()); |
| 814 | |
| 815 | if (packet->packet_type() != RtpPacketToSend::Type::kPadding && |
| 816 | packet->packet_type() != RtpPacketToSend::Type::kRetransmission) { |
| 817 | UpdateDelayStatistics(packet->capture_time_ms(), now_ms, packet_ssrc); |
| 818 | UpdateOnSendPacket(options.packet_id, packet->capture_time_ms(), |
| 819 | packet_ssrc); |
| 820 | } |
| 821 | |
| 822 | const bool send_success = SendPacketToNetwork(*packet, options, pacing_info); |
| 823 | |
| 824 | // Put packet in retransmission history or update pending status even if |
| 825 | // actual sending fails. |
| 826 | if (is_media && packet->allow_retransmission()) { |
| 827 | packet_history_.PutRtpPacket(absl::make_unique<RtpPacketToSend>(*packet), |
| 828 | StorageType::kAllowRetransmission, now_ms); |
| 829 | } else if (packet->retransmitted_sequence_number()) { |
| 830 | packet_history_.MarkPacketAsSent(*packet->retransmitted_sequence_number()); |
| 831 | } |
| 832 | |
| 833 | if (send_success) { |
| 834 | UpdateRtpStats(*packet, is_rtx, |
| 835 | packet_type == RtpPacketToSend::Type::kRetransmission); |
| 836 | |
| 837 | rtc::CritScope lock(&send_critsect_); |
| 838 | media_has_been_sent_ = true; |
| 839 | } |
| 840 | |
| 841 | // Return true even if transport failed (will be handled by retransmissions |
| 842 | // instead in that case), so that PacketRouter does not have to iterate over |
| 843 | // all other RTP modules and fail to send there too. |
| 844 | return true; |
| 845 | } |
| 846 | |
Mirko Bonadei | 999a72a | 2019-07-12 17:33:46 +0000 | [diff] [blame] | 847 | bool RTPSender::SupportsPadding() const { |
| 848 | rtc::CritScope lock(&send_critsect_); |
| 849 | return sending_media_ && supports_bwe_extension_; |
| 850 | } |
| 851 | |
| 852 | bool RTPSender::SupportsRtxPayloadPadding() const { |
| 853 | rtc::CritScope lock(&send_critsect_); |
| 854 | return sending_media_ && supports_bwe_extension_ && |
| 855 | (rtx_ & kRtxRedundantPayloads); |
| 856 | } |
| 857 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 858 | bool RTPSender::PrepareAndSendPacket(std::unique_ptr<RtpPacketToSend> packet, |
stefan@webrtc.org | 7c6ff2d | 2014-03-19 18:14:52 +0000 | [diff] [blame] | 859 | bool send_over_rtx, |
philipel | a1ed0b3 | 2016-06-01 06:31:17 -0700 | [diff] [blame] | 860 | bool is_retransmit, |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 861 | const PacedPacketInfo& pacing_info) { |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 862 | RTC_DCHECK(packet); |
| 863 | int64_t capture_time_ms = packet->capture_time_ms(); |
| 864 | RtpPacketToSend* packet_to_send = packet.get(); |
stefan@webrtc.org | 7e9315b | 2013-12-04 10:24:26 +0000 | [diff] [blame] | 865 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 866 | std::unique_ptr<RtpPacketToSend> packet_rtx; |
stefan@webrtc.org | 7e9315b | 2013-12-04 10:24:26 +0000 | [diff] [blame] | 867 | if (send_over_rtx) { |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 868 | packet_rtx = BuildRtxPacket(*packet); |
| 869 | if (!packet_rtx) |
danilchap | 32cd2c4 | 2016-08-01 06:58:34 -0700 | [diff] [blame] | 870 | return false; |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 871 | packet_to_send = packet_rtx.get(); |
stefan@webrtc.org | 9b82f5a | 2013-11-13 15:29:21 +0000 | [diff] [blame] | 872 | } |
| 873 | |
ilnik | 1089499 | 2017-06-21 08:23:19 -0700 | [diff] [blame] | 874 | // Bug webrtc:7859. While FEC is invoked from rtp_sender_video, and not after |
| 875 | // the pacer, these modifications of the header below are happening after the |
| 876 | // FEC protection packets are calculated. This will corrupt recovered packets |
| 877 | // at the same place. It's not an issue for extensions, which are present in |
| 878 | // all the packets (their content just may be incorrect on recovered packets). |
| 879 | // In case of VideoTimingExtension, since it's present not in every packet, |
| 880 | // data after rtp header may be corrupted if these packets are protected by |
| 881 | // the FEC. |
solenberg@webrtc.org | 7ebbea1 | 2013-05-16 11:10:31 +0000 | [diff] [blame] | 882 | int64_t now_ms = clock_->TimeInMilliseconds(); |
| 883 | int64_t diff_ms = now_ms - capture_time_ms; |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 884 | packet_to_send->SetExtension<TransmissionOffset>(kTimestampTicksPerMs * |
| 885 | diff_ms); |
Danil Chapovalov | f3ba648 | 2017-06-12 15:43:55 +0200 | [diff] [blame] | 886 | packet_to_send->SetExtension<AbsoluteSendTime>( |
| 887 | AbsoluteSendTime::MsTo24Bits(now_ms)); |
sprang | 867fb52 | 2015-08-03 04:38:41 -0700 | [diff] [blame] | 888 | |
Erik Språng | 7b52f10 | 2018-02-07 14:37:37 +0100 | [diff] [blame] | 889 | if (packet_to_send->HasExtension<VideoTimingExtension>()) { |
| 890 | if (populate_network2_timestamp_) { |
| 891 | packet_to_send->set_network2_time_ms(now_ms); |
| 892 | } else { |
| 893 | packet_to_send->set_pacer_exit_time_ms(now_ms); |
| 894 | } |
| 895 | } |
ilnik | 04f4d12 | 2017-06-19 07:18:55 -0700 | [diff] [blame] | 896 | |
stefan | 1d8a506 | 2015-10-02 03:39:33 -0700 | [diff] [blame] | 897 | PacketOptions options; |
Petter Strandmark | 26bc669 | 2018-05-29 08:43:35 +0200 | [diff] [blame] | 898 | // If we are sending over RTX, it also means this is a retransmission. |
| 899 | // E.g. RTPSender::TrySendRedundantPayloads calls PrepareAndSendPacket with |
| 900 | // send_over_rtx = true but is_retransmit = false. |
| 901 | options.is_retransmit = is_retransmit || send_over_rtx; |
Sebastian Jansson | 30e2d6e | 2018-10-09 18:27:36 +0200 | [diff] [blame] | 902 | bool has_transport_seq_num; |
| 903 | { |
| 904 | rtc::CritScope lock(&send_critsect_); |
| 905 | has_transport_seq_num = |
| 906 | UpdateTransportSequenceNumber(packet_to_send, &options.packet_id); |
Sebastian Jansson | 1bca65b | 2018-10-10 09:58:08 +0200 | [diff] [blame] | 907 | options.included_in_allocation = |
| 908 | has_transport_seq_num || force_part_of_allocation_; |
| 909 | options.included_in_feedback = has_transport_seq_num; |
Sebastian Jansson | 30e2d6e | 2018-10-09 18:27:36 +0200 | [diff] [blame] | 910 | } |
| 911 | if (has_transport_seq_num) { |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 912 | AddPacketToTransportFeedback(options.packet_id, *packet_to_send, |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 913 | pacing_info); |
sprang | 867fb52 | 2015-08-03 04:38:41 -0700 | [diff] [blame] | 914 | } |
Dino Radaković | 1807d57 | 2018-02-22 14:18:06 +0100 | [diff] [blame] | 915 | options.application_data.assign(packet_to_send->application_data().begin(), |
| 916 | packet_to_send->application_data().end()); |
sprang | 867fb52 | 2015-08-03 04:38:41 -0700 | [diff] [blame] | 917 | |
asapersson | 35151f3 | 2016-05-02 23:44:01 -0700 | [diff] [blame] | 918 | if (!is_retransmit && !send_over_rtx) { |
Erik Språng | 9c771c2 | 2019-06-17 16:31:53 +0200 | [diff] [blame] | 919 | UpdateDelayStatistics(packet->capture_time_ms(), now_ms, packet->Ssrc()); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 920 | UpdateOnSendPacket(options.packet_id, packet->capture_time_ms(), |
| 921 | packet->Ssrc()); |
stefan | f116bd0 | 2015-10-27 08:29:42 -0700 | [diff] [blame] | 922 | } |
| 923 | |
philipel | 32d0010 | 2017-02-27 02:18:46 -0800 | [diff] [blame] | 924 | if (!SendPacketToNetwork(*packet_to_send, options, pacing_info)) |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 925 | return false; |
| 926 | |
| 927 | { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 928 | rtc::CritScope lock(&send_critsect_); |
stefan@webrtc.org | 8b94e3d | 2014-07-17 16:10:14 +0000 | [diff] [blame] | 929 | media_has_been_sent_ = true; |
| 930 | } |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 931 | UpdateRtpStats(*packet_to_send, send_over_rtx, is_retransmit); |
| 932 | return true; |
sprang@webrtc.org | ebad765 | 2013-12-05 14:29:02 +0000 | [diff] [blame] | 933 | } |
| 934 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 935 | void RTPSender::UpdateRtpStats(const RtpPacketToSend& packet, |
sprang@webrtc.org | ebad765 | 2013-12-05 14:29:02 +0000 | [diff] [blame] | 936 | bool is_rtx, |
| 937 | bool is_retransmit) { |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 938 | int64_t now_ms = clock_->TimeInMilliseconds(); |
sprang@webrtc.org | 5314e85 | 2014-01-27 13:20:36 +0000 | [diff] [blame] | 939 | |
danilchap | 7c9426c | 2016-04-14 03:05:31 -0700 | [diff] [blame] | 940 | rtc::CritScope lock(&statistics_crit_); |
Danil Chapovalov | d69e526 | 2016-09-20 15:48:09 +0200 | [diff] [blame] | 941 | StreamDataCounters* counters = is_rtx ? &rtx_rtp_stats_ : &rtp_stats_; |
sprang@webrtc.org | ebad765 | 2013-12-05 14:29:02 +0000 | [diff] [blame] | 942 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 943 | total_bitrate_sent_.Update(packet.size(), now_ms); |
asapersson@webrtc.org | 4414939 | 2015-02-04 08:34:47 +0000 | [diff] [blame] | 944 | |
Danil Chapovalov | d69e526 | 2016-09-20 15:48:09 +0200 | [diff] [blame] | 945 | if (counters->first_packet_time_ms == -1) |
| 946 | counters->first_packet_time_ms = now_ms; |
| 947 | |
Erik Språng | f53cfa9 | 2019-06-12 13:58:17 +0200 | [diff] [blame] | 948 | if (packet.packet_type() == RtpPacketToSend::Type::kForwardErrorCorrection) { |
Niels Möller | dbb988b | 2018-11-15 08:05:16 +0100 | [diff] [blame] | 949 | counters->fec.AddPacket(packet); |
Erik Språng | f53cfa9 | 2019-06-12 13:58:17 +0200 | [diff] [blame] | 950 | } |
Danil Chapovalov | d69e526 | 2016-09-20 15:48:09 +0200 | [diff] [blame] | 951 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 952 | if (is_retransmit) { |
Niels Möller | dbb988b | 2018-11-15 08:05:16 +0100 | [diff] [blame] | 953 | counters->retransmitted.AddPacket(packet); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 954 | nack_bitrate_sent_.Update(packet.size(), now_ms); |
| 955 | } |
Niels Möller | dbb988b | 2018-11-15 08:05:16 +0100 | [diff] [blame] | 956 | counters->transmitted.AddPacket(packet); |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 957 | |
Danil Chapovalov | d69e526 | 2016-09-20 15:48:09 +0200 | [diff] [blame] | 958 | if (rtp_stats_callback_) |
| 959 | rtp_stats_callback_->DataCountersUpdated(*counters, packet.Ssrc()); |
sprang@webrtc.org | ebad765 | 2013-12-05 14:29:02 +0000 | [diff] [blame] | 960 | } |
| 961 | |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 962 | size_t RTPSender::TimeToSendPadding(size_t bytes, |
| 963 | const PacedPacketInfo& pacing_info) { |
stefan | 53b6cc3 | 2017-02-03 08:13:57 -0800 | [diff] [blame] | 964 | if (bytes == 0) |
pbos | 545727e | 2015-07-01 06:31:06 -0700 | [diff] [blame] | 965 | return 0; |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 966 | size_t bytes_sent = TrySendRedundantPayloads(bytes, pacing_info); |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 967 | if (bytes_sent < bytes) |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 968 | bytes_sent += SendPadData(bytes - bytes_sent, pacing_info); |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 969 | return bytes_sent; |
stefan@webrtc.org | 508a84b | 2013-06-17 12:53:37 +0000 | [diff] [blame] | 970 | } |
| 971 | |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 972 | std::vector<std::unique_ptr<RtpPacketToSend>> RTPSender::GeneratePadding( |
| 973 | size_t target_size_bytes) { |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 974 | // This method does not actually send packets, it just generates |
| 975 | // them and puts them in the pacer queue. Since this should incur |
| 976 | // low overhead, keep the lock for the scope of the method in order |
| 977 | // to make the code more readable. |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 978 | |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 979 | std::vector<std::unique_ptr<RtpPacketToSend>> padding_packets; |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 980 | size_t bytes_left = target_size_bytes; |
Erik Språng | 0f6191d | 2019-07-15 20:33:40 +0200 | [diff] [blame] | 981 | if (SupportsRtxPayloadPadding()) { |
Mirko Bonadei | a7e3bce | 2019-07-12 17:35:56 +0000 | [diff] [blame] | 982 | while (bytes_left >= kMinPayloadPaddingBytes) { |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 983 | std::unique_ptr<RtpPacketToSend> packet = |
| 984 | packet_history_.GetPayloadPaddingPacket( |
| 985 | [&](const RtpPacketToSend& packet) |
| 986 | -> std::unique_ptr<RtpPacketToSend> { |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 987 | return BuildRtxPacket(packet); |
| 988 | }); |
| 989 | if (!packet) { |
| 990 | break; |
| 991 | } |
| 992 | |
| 993 | bytes_left -= std::min(bytes_left, packet->payload_size()); |
| 994 | packet->set_packet_type(RtpPacketToSend::Type::kPadding); |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 995 | padding_packets.push_back(std::move(packet)); |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 996 | } |
| 997 | } |
| 998 | |
Erik Språng | 0f6191d | 2019-07-15 20:33:40 +0200 | [diff] [blame] | 999 | rtc::CritScope lock(&send_critsect_); |
| 1000 | if (!sending_media_) { |
| 1001 | return {}; |
| 1002 | } |
| 1003 | |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 1004 | size_t padding_bytes_in_packet; |
| 1005 | const size_t max_payload_size = max_packet_size_ - RtpHeaderLength(); |
| 1006 | if (audio_configured_) { |
| 1007 | // Allow smaller padding packets for audio. |
| 1008 | padding_bytes_in_packet = rtc::SafeClamp<size_t>( |
| 1009 | bytes_left, kMinAudioPaddingLength, |
| 1010 | rtc::SafeMin(max_payload_size, kMaxPaddingLength)); |
| 1011 | } else { |
| 1012 | // Always send full padding packets. This is accounted for by the |
| 1013 | // RtpPacketSender, which will make sure we don't send too much padding even |
| 1014 | // if a single packet is larger than requested. |
| 1015 | // We do this to avoid frequently sending small packets on higher bitrates. |
| 1016 | padding_bytes_in_packet = rtc::SafeMin(max_payload_size, kMaxPaddingLength); |
| 1017 | } |
| 1018 | |
| 1019 | while (bytes_left > 0) { |
| 1020 | auto padding_packet = |
| 1021 | absl::make_unique<RtpPacketToSend>(&rtp_header_extension_map_); |
| 1022 | padding_packet->set_packet_type(RtpPacketToSend::Type::kPadding); |
| 1023 | padding_packet->SetMarker(false); |
| 1024 | padding_packet->SetTimestamp(last_rtp_timestamp_); |
| 1025 | padding_packet->set_capture_time_ms(capture_time_ms_); |
| 1026 | if (rtx_ == kRtxOff) { |
| 1027 | if (last_payload_type_ == -1) { |
| 1028 | break; |
| 1029 | } |
| 1030 | // Without RTX we can't send padding in the middle of frames. |
| 1031 | // For audio marker bits doesn't mark the end of a frame and frames |
| 1032 | // are usually a single packet, so for now we don't apply this rule |
| 1033 | // for audio. |
| 1034 | if (!audio_configured_ && !last_packet_marker_bit_) { |
| 1035 | break; |
| 1036 | } |
| 1037 | |
| 1038 | RTC_DCHECK(ssrc_); |
| 1039 | padding_packet->SetSsrc(*ssrc_); |
| 1040 | padding_packet->SetPayloadType(last_payload_type_); |
| 1041 | padding_packet->SetSequenceNumber(sequence_number_++); |
| 1042 | } else { |
| 1043 | // Without abs-send-time or transport sequence number a media packet |
| 1044 | // must be sent before padding so that the timestamps used for |
| 1045 | // estimation are correct. |
| 1046 | if (!media_has_been_sent_ && |
| 1047 | !(rtp_header_extension_map_.IsRegistered(AbsoluteSendTime::kId) || |
| 1048 | rtp_header_extension_map_.IsRegistered( |
| 1049 | TransportSequenceNumber::kId))) { |
| 1050 | break; |
| 1051 | } |
| 1052 | // Only change the timestamp of padding packets sent over RTX. |
| 1053 | // Padding only packets over RTP has to be sent as part of a media |
| 1054 | // frame (and therefore the same timestamp). |
| 1055 | int64_t now_ms = clock_->TimeInMilliseconds(); |
| 1056 | if (last_timestamp_time_ms_ > 0) { |
| 1057 | padding_packet->SetTimestamp(padding_packet->Timestamp() + |
| 1058 | (now_ms - last_timestamp_time_ms_) * |
| 1059 | kTimestampTicksPerMs); |
| 1060 | padding_packet->set_capture_time_ms(padding_packet->capture_time_ms() + |
| 1061 | (now_ms - last_timestamp_time_ms_)); |
| 1062 | } |
| 1063 | RTC_DCHECK(ssrc_rtx_); |
| 1064 | padding_packet->SetSsrc(*ssrc_rtx_); |
| 1065 | padding_packet->SetSequenceNumber(sequence_number_rtx_++); |
| 1066 | padding_packet->SetPayloadType(rtx_payload_type_map_.begin()->second); |
| 1067 | } |
| 1068 | |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 1069 | if (rtp_header_extension_map_.IsRegistered(TransportSequenceNumber::kId)) { |
| 1070 | padding_packet->ReserveExtension<TransportSequenceNumber>(); |
| 1071 | } |
Erik Språng | 0f6191d | 2019-07-15 20:33:40 +0200 | [diff] [blame] | 1072 | if (rtp_header_extension_map_.IsRegistered(TransmissionOffset::kId)) { |
| 1073 | padding_packet->ReserveExtension<TransmissionOffset>(); |
| 1074 | } |
| 1075 | if (rtp_header_extension_map_.IsRegistered(AbsoluteSendTime::kId)) { |
| 1076 | padding_packet->ReserveExtension<AbsoluteSendTime>(); |
| 1077 | } |
| 1078 | |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 1079 | padding_packet->SetPadding(padding_bytes_in_packet); |
| 1080 | bytes_left -= std::min(bytes_left, padding_bytes_in_packet); |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 1081 | padding_packets.push_back(std::move(padding_packet)); |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 1082 | } |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 1083 | |
| 1084 | return padding_packets; |
Erik Språng | 478cb46 | 2019-06-26 15:49:27 +0200 | [diff] [blame] | 1085 | } |
| 1086 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1087 | bool RTPSender::SendToNetwork(std::unique_ptr<RtpPacketToSend> packet, |
Erik Språng | 13eb764 | 2019-06-24 10:58:48 +0200 | [diff] [blame] | 1088 | StorageType storage) { |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1089 | RTC_DCHECK(packet); |
solenberg@webrtc.org | 7ebbea1 | 2013-05-16 11:10:31 +0000 | [diff] [blame] | 1090 | int64_t now_ms = clock_->TimeInMilliseconds(); |
| 1091 | |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 1092 | uint32_t ssrc = packet->Ssrc(); |
Peter Boström | e23e737 | 2015-10-08 11:44:14 +0200 | [diff] [blame] | 1093 | if (paced_sender_) { |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1094 | uint16_t seq_no = packet->SequenceNumber(); |
Erik Språng | 83afeeb | 2019-05-14 15:57:19 +0200 | [diff] [blame] | 1095 | int64_t capture_time_ms = packet->capture_time_ms(); |
Per Kjellander | 17c147c | 2019-02-20 12:06:17 +0100 | [diff] [blame] | 1096 | size_t packet_size = |
| 1097 | send_side_bwe_with_overhead_ ? packet->size() : packet->payload_size(); |
Erik Språng | 13eb764 | 2019-06-24 10:58:48 +0200 | [diff] [blame] | 1098 | auto packet_type = packet->packet_type(); |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 1099 | RTC_CHECK(packet_type) << "Packet type must be set before sending."; |
| 1100 | |
| 1101 | if (pacer_legacy_packet_referencing_) { |
| 1102 | // If |pacer_reference_packets_| then pacer needs to find the packet in |
| 1103 | // the history when it is time to send, so move packet there. |
| 1104 | if (ssrc == FlexfecSsrc()) { |
| 1105 | // Store FlexFEC packets in a separate history since they are on a |
| 1106 | // separate SSRC. |
| 1107 | flexfec_packet_history_.PutRtpPacket(std::move(packet), storage, |
| 1108 | absl::nullopt); |
| 1109 | } else { |
| 1110 | packet_history_.PutRtpPacket(std::move(packet), storage, absl::nullopt); |
| 1111 | } |
| 1112 | |
| 1113 | paced_sender_->InsertPacket(PacketTypeToPriority(*packet_type), ssrc, |
| 1114 | seq_no, capture_time_ms, packet_size, false); |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 1115 | } else { |
Erik Språng | f6468d2 | 2019-07-05 16:53:43 +0200 | [diff] [blame] | 1116 | packet->set_allow_retransmission(storage == |
| 1117 | StorageType::kAllowRetransmission); |
| 1118 | paced_sender_->EnqueuePacket(std::move(packet)); |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 1119 | } |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1120 | |
Sergey Ulanov | 525df3f | 2016-08-02 17:46:41 -0700 | [diff] [blame] | 1121 | return true; |
stefan@webrtc.org | ddfdfed | 2012-07-03 13:21:22 +0000 | [diff] [blame] | 1122 | } |
Stefan Holmer | f5dca48 | 2016-01-27 12:58:51 +0100 | [diff] [blame] | 1123 | |
| 1124 | PacketOptions options; |
Petter Strandmark | 26bc669 | 2018-05-29 08:43:35 +0200 | [diff] [blame] | 1125 | options.is_retransmit = false; |
Sebastian Jansson | 30e2d6e | 2018-10-09 18:27:36 +0200 | [diff] [blame] | 1126 | |
Danil Chapovalov | af52b68 | 2018-11-27 10:48:27 +0100 | [diff] [blame] | 1127 | // |capture_time_ms| <= 0 is considered invalid. |
| 1128 | // TODO(holmer): This should be changed all over Video Engine so that negative |
| 1129 | // time is consider invalid, while 0 is considered a valid time. |
| 1130 | if (packet->capture_time_ms() > 0) { |
| 1131 | packet->SetExtension<TransmissionOffset>( |
| 1132 | kTimestampTicksPerMs * (now_ms - packet->capture_time_ms())); |
| 1133 | |
| 1134 | if (populate_network2_timestamp_ && |
| 1135 | packet->HasExtension<VideoTimingExtension>()) { |
| 1136 | packet->set_network2_time_ms(now_ms); |
| 1137 | } |
| 1138 | } |
| 1139 | packet->SetExtension<AbsoluteSendTime>(AbsoluteSendTime::MsTo24Bits(now_ms)); |
| 1140 | |
Sebastian Jansson | 30e2d6e | 2018-10-09 18:27:36 +0200 | [diff] [blame] | 1141 | bool has_transport_seq_num; |
| 1142 | { |
| 1143 | rtc::CritScope lock(&send_critsect_); |
| 1144 | has_transport_seq_num = |
| 1145 | UpdateTransportSequenceNumber(packet.get(), &options.packet_id); |
Sebastian Jansson | 1bca65b | 2018-10-10 09:58:08 +0200 | [diff] [blame] | 1146 | options.included_in_allocation = |
| 1147 | has_transport_seq_num || force_part_of_allocation_; |
| 1148 | options.included_in_feedback = has_transport_seq_num; |
Sebastian Jansson | 30e2d6e | 2018-10-09 18:27:36 +0200 | [diff] [blame] | 1149 | } |
| 1150 | if (has_transport_seq_num) { |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 1151 | AddPacketToTransportFeedback(options.packet_id, *packet.get(), |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 1152 | PacedPacketInfo()); |
Stefan Holmer | f5dca48 | 2016-01-27 12:58:51 +0100 | [diff] [blame] | 1153 | } |
Dino Radaković | 1807d57 | 2018-02-22 14:18:06 +0100 | [diff] [blame] | 1154 | options.application_data.assign(packet->application_data().begin(), |
| 1155 | packet->application_data().end()); |
Stefan Holmer | f5dca48 | 2016-01-27 12:58:51 +0100 | [diff] [blame] | 1156 | |
Erik Språng | 9c771c2 | 2019-06-17 16:31:53 +0200 | [diff] [blame] | 1157 | UpdateDelayStatistics(packet->capture_time_ms(), now_ms, packet->Ssrc()); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1158 | UpdateOnSendPacket(options.packet_id, packet->capture_time_ms(), |
| 1159 | packet->Ssrc()); |
| 1160 | |
philipel | 32d0010 | 2017-02-27 02:18:46 -0800 | [diff] [blame] | 1161 | bool sent = SendPacketToNetwork(*packet, options, PacedPacketInfo()); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1162 | |
| 1163 | if (sent) { |
| 1164 | { |
| 1165 | rtc::CritScope lock(&send_critsect_); |
| 1166 | media_has_been_sent_ = true; |
| 1167 | } |
| 1168 | UpdateRtpStats(*packet, false, false); |
| 1169 | } |
sprang@webrtc.org | c957ffc | 2015-02-02 13:08:02 +0000 | [diff] [blame] | 1170 | |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 1171 | // To support retransmissions, we store the media packet as sent in the |
| 1172 | // packet history (even if send failed). |
| 1173 | if (storage == kAllowRetransmission) { |
Danil Chapovalov | 603ce98 | 2017-12-27 11:32:50 +0100 | [diff] [blame] | 1174 | RTC_DCHECK_EQ(ssrc, SSRC()); |
Erik Språng | a12b1d6 | 2018-03-14 12:39:24 +0100 | [diff] [blame] | 1175 | packet_history_.PutRtpPacket(std::move(packet), storage, now_ms); |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 1176 | } |
Peter Boström | e23e737 | 2015-10-08 11:44:14 +0200 | [diff] [blame] | 1177 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1178 | return sent; |
stefan@webrtc.org | 6a4bef4 | 2011-12-22 12:52:41 +0000 | [diff] [blame] | 1179 | } |
| 1180 | |
Erik Språng | 13eb764 | 2019-06-24 10:58:48 +0200 | [diff] [blame] | 1181 | bool RTPSender::SendToNetwork(std::unique_ptr<RtpPacketToSend> packet, |
| 1182 | StorageType storage, |
| 1183 | RtpPacketSender::Priority priority) { |
| 1184 | packet->set_packet_type(PacketPriorityToType(priority)); |
| 1185 | return SendToNetwork(std::move(packet), storage); |
| 1186 | } |
| 1187 | |
Johannes Kron | 4a8a5e7 | 2018-09-26 09:57:48 +0200 | [diff] [blame] | 1188 | void RTPSender::RecomputeMaxSendDelay() { |
| 1189 | max_delay_it_ = send_delays_.begin(); |
| 1190 | for (auto it = send_delays_.begin(); it != send_delays_.end(); ++it) { |
| 1191 | if (it->second >= max_delay_it_->second) { |
| 1192 | max_delay_it_ = it; |
| 1193 | } |
| 1194 | } |
| 1195 | } |
| 1196 | |
Erik Språng | 9c771c2 | 2019-06-17 16:31:53 +0200 | [diff] [blame] | 1197 | void RTPSender::UpdateDelayStatistics(int64_t capture_time_ms, |
| 1198 | int64_t now_ms, |
| 1199 | uint32_t ssrc) { |
asapersson | 35151f3 | 2016-05-02 23:44:01 -0700 | [diff] [blame] | 1200 | if (!send_side_delay_observer_ || capture_time_ms <= 0) |
Peter Boström | 71861a0 | 2015-05-28 14:45:36 +0200 | [diff] [blame] | 1201 | return; |
| 1202 | |
Johannes Kron | 4a8a5e7 | 2018-09-26 09:57:48 +0200 | [diff] [blame] | 1203 | int avg_delay_ms = 0; |
stefan@webrtc.org | 168f23f | 2014-07-11 13:44:02 +0000 | [diff] [blame] | 1204 | int max_delay_ms = 0; |
Henrik Boström | 9fe1834 | 2019-05-16 18:38:20 +0200 | [diff] [blame] | 1205 | uint64_t total_packet_send_delay_ms = 0; |
stefan@webrtc.org | 168f23f | 2014-07-11 13:44:02 +0000 | [diff] [blame] | 1206 | { |
danilchap | 7c9426c | 2016-04-14 03:05:31 -0700 | [diff] [blame] | 1207 | rtc::CritScope cs(&statistics_crit_); |
Johannes Kron | 4a8a5e7 | 2018-09-26 09:57:48 +0200 | [diff] [blame] | 1208 | // Compute the max and average of the recent capture-to-send delays. |
| 1209 | // The time complexity of the current approach depends on the distribution |
| 1210 | // of the delay values. This could be done more efficiently. |
| 1211 | |
| 1212 | // Remove elements older than kSendSideDelayWindowMs. |
| 1213 | auto lower_bound = |
| 1214 | send_delays_.lower_bound(now_ms - kSendSideDelayWindowMs); |
| 1215 | for (auto it = send_delays_.begin(); it != lower_bound; ++it) { |
| 1216 | if (max_delay_it_ == it) { |
| 1217 | max_delay_it_ = send_delays_.end(); |
| 1218 | } |
| 1219 | sum_delays_ms_ -= it->second; |
| 1220 | } |
| 1221 | send_delays_.erase(send_delays_.begin(), lower_bound); |
| 1222 | if (max_delay_it_ == send_delays_.end()) { |
| 1223 | // Removed the previous max. Need to recompute. |
| 1224 | RecomputeMaxSendDelay(); |
| 1225 | } |
| 1226 | |
| 1227 | // Add the new element. |
Johannes Kron | 965e794 | 2018-09-13 15:36:20 +0200 | [diff] [blame] | 1228 | RTC_DCHECK_GE(now_ms, static_cast<int64_t>(0)); |
| 1229 | RTC_DCHECK_LE(now_ms, std::numeric_limits<int64_t>::max() / 2); |
| 1230 | RTC_DCHECK_GE(capture_time_ms, static_cast<int64_t>(0)); |
| 1231 | RTC_DCHECK_LE(capture_time_ms, std::numeric_limits<int64_t>::max() / 2); |
| 1232 | int64_t diff_ms = now_ms - capture_time_ms; |
| 1233 | RTC_DCHECK_GE(diff_ms, static_cast<int64_t>(0)); |
| 1234 | RTC_DCHECK_LE(diff_ms, |
| 1235 | static_cast<int64_t>(std::numeric_limits<int>::max())); |
Johannes Kron | 4a8a5e7 | 2018-09-26 09:57:48 +0200 | [diff] [blame] | 1236 | int new_send_delay = rtc::dchecked_cast<int>(now_ms - capture_time_ms); |
| 1237 | SendDelayMap::iterator it; |
| 1238 | bool inserted; |
| 1239 | std::tie(it, inserted) = |
| 1240 | send_delays_.insert(std::make_pair(now_ms, new_send_delay)); |
| 1241 | if (!inserted) { |
| 1242 | // TODO(terelius): If we have multiple delay measurements during the same |
| 1243 | // millisecond then we keep the most recent one. It is not clear that this |
| 1244 | // is the right decision, but it preserves an earlier behavior. |
| 1245 | int previous_send_delay = it->second; |
| 1246 | sum_delays_ms_ -= previous_send_delay; |
| 1247 | it->second = new_send_delay; |
| 1248 | if (max_delay_it_ == it && new_send_delay < previous_send_delay) { |
| 1249 | RecomputeMaxSendDelay(); |
| 1250 | } |
Peter Boström | 71861a0 | 2015-05-28 14:45:36 +0200 | [diff] [blame] | 1251 | } |
Johannes Kron | 4a8a5e7 | 2018-09-26 09:57:48 +0200 | [diff] [blame] | 1252 | if (max_delay_it_ == send_delays_.end() || |
| 1253 | it->second >= max_delay_it_->second) { |
| 1254 | max_delay_it_ = it; |
| 1255 | } |
| 1256 | sum_delays_ms_ += new_send_delay; |
Henrik Boström | 9fe1834 | 2019-05-16 18:38:20 +0200 | [diff] [blame] | 1257 | total_packet_send_delay_ms_ += new_send_delay; |
| 1258 | total_packet_send_delay_ms = total_packet_send_delay_ms_; |
Johannes Kron | 4a8a5e7 | 2018-09-26 09:57:48 +0200 | [diff] [blame] | 1259 | |
| 1260 | size_t num_delays = send_delays_.size(); |
| 1261 | RTC_DCHECK(max_delay_it_ != send_delays_.end()); |
| 1262 | max_delay_ms = rtc::dchecked_cast<int>(max_delay_it_->second); |
| 1263 | int64_t avg_ms = (sum_delays_ms_ + num_delays / 2) / num_delays; |
| 1264 | RTC_DCHECK_GE(avg_ms, static_cast<int64_t>(0)); |
| 1265 | RTC_DCHECK_LE(avg_ms, |
| 1266 | static_cast<int64_t>(std::numeric_limits<int>::max())); |
| 1267 | avg_delay_ms = |
| 1268 | rtc::dchecked_cast<int>((sum_delays_ms_ + num_delays / 2) / num_delays); |
stefan@webrtc.org | 168f23f | 2014-07-11 13:44:02 +0000 | [diff] [blame] | 1269 | } |
Henrik Boström | 9fe1834 | 2019-05-16 18:38:20 +0200 | [diff] [blame] | 1270 | send_side_delay_observer_->SendSideDelayUpdated( |
| 1271 | avg_delay_ms, max_delay_ms, total_packet_send_delay_ms, ssrc); |
stefan@webrtc.org | 0a3c147 | 2013-12-05 14:05:07 +0000 | [diff] [blame] | 1272 | } |
| 1273 | |
asapersson | 35151f3 | 2016-05-02 23:44:01 -0700 | [diff] [blame] | 1274 | void RTPSender::UpdateOnSendPacket(int packet_id, |
| 1275 | int64_t capture_time_ms, |
| 1276 | uint32_t ssrc) { |
| 1277 | if (!send_packet_observer_ || capture_time_ms <= 0 || packet_id == -1) |
| 1278 | return; |
| 1279 | |
| 1280 | send_packet_observer_->OnSendPacket(packet_id, capture_time_ms, ssrc); |
| 1281 | } |
| 1282 | |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1283 | void RTPSender::ProcessBitrate() { |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 1284 | if (!bitrate_callback_) |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1285 | return; |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 1286 | int64_t now_ms = clock_->TimeInMilliseconds(); |
| 1287 | uint32_t ssrc; |
| 1288 | { |
| 1289 | rtc::CritScope lock(&send_critsect_); |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 1290 | if (!ssrc_) |
| 1291 | return; |
| 1292 | ssrc = *ssrc_; |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1293 | } |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 1294 | |
| 1295 | rtc::CritScope lock(&statistics_crit_); |
| 1296 | bitrate_callback_->Notify(total_bitrate_sent_.Rate(now_ms).value_or(0), |
| 1297 | nack_bitrate_sent_.Rate(now_ms).value_or(0), ssrc); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1298 | } |
| 1299 | |
isheriff | 6b4b5f3 | 2016-06-08 00:24:21 -0700 | [diff] [blame] | 1300 | size_t RTPSender::RtpHeaderLength() const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1301 | rtc::CritScope lock(&send_critsect_); |
guoweis@webrtc.org | 4536289 | 2015-03-04 22:55:15 +0000 | [diff] [blame] | 1302 | size_t rtp_header_length = kRtpHeaderLength; |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1303 | rtp_header_length += sizeof(uint32_t) * csrcs_.size(); |
Danil Chapovalov | 7b18992 | 2018-10-03 10:15:36 +0200 | [diff] [blame] | 1304 | rtp_header_length += RtpHeaderExtensionSize(kFecOrPaddingExtensionSizes, |
| 1305 | rtp_header_extension_map_); |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 1306 | return rtp_header_length; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1307 | } |
| 1308 | |
mflodman | fcf54bd | 2015-04-14 21:28:08 +0200 | [diff] [blame] | 1309 | uint16_t RTPSender::AllocateSequenceNumber(uint16_t packets_to_send) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1310 | rtc::CritScope lock(&send_critsect_); |
mflodman | fcf54bd | 2015-04-14 21:28:08 +0200 | [diff] [blame] | 1311 | uint16_t first_allocated_sequence_number = sequence_number_; |
| 1312 | sequence_number_ += packets_to_send; |
| 1313 | return first_allocated_sequence_number; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1314 | } |
| 1315 | |
pbos@webrtc.org | 2f4b14e | 2014-07-15 15:25:39 +0000 | [diff] [blame] | 1316 | void RTPSender::GetDataCounters(StreamDataCounters* rtp_stats, |
| 1317 | StreamDataCounters* rtx_stats) const { |
danilchap | 7c9426c | 2016-04-14 03:05:31 -0700 | [diff] [blame] | 1318 | rtc::CritScope lock(&statistics_crit_); |
pbos@webrtc.org | 2f4b14e | 2014-07-15 15:25:39 +0000 | [diff] [blame] | 1319 | *rtp_stats = rtp_stats_; |
| 1320 | *rtx_stats = rtx_rtp_stats_; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1321 | } |
| 1322 | |
Danil Chapovalov | 5e57b17 | 2016-09-02 19:15:59 +0200 | [diff] [blame] | 1323 | std::unique_ptr<RtpPacketToSend> RTPSender::AllocatePacket() const { |
| 1324 | rtc::CritScope lock(&send_critsect_); |
Danil Chapovalov | 3b4b4f5 | 2018-10-12 12:50:43 +0200 | [diff] [blame] | 1325 | // TODO(danilchap): Find better motivator and value for extra capacity. |
| 1326 | // RtpPacketizer might slightly miscalulate needed size, |
| 1327 | // SRTP may benefit from extra space in the buffer and do encryption in place |
| 1328 | // saving reallocation. |
| 1329 | // While sending slightly oversized packet increase chance of dropped packet, |
| 1330 | // it is better than crash on drop packet without trying to send it. |
| 1331 | static constexpr int kExtraCapacity = 16; |
| 1332 | auto packet = absl::make_unique<RtpPacketToSend>( |
| 1333 | &rtp_header_extension_map_, max_packet_size_ + kExtraCapacity); |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 1334 | RTC_DCHECK(ssrc_); |
| 1335 | packet->SetSsrc(*ssrc_); |
Danil Chapovalov | 5e57b17 | 2016-09-02 19:15:59 +0200 | [diff] [blame] | 1336 | packet->SetCsrcs(csrcs_); |
| 1337 | // Reserve extensions, if registered, RtpSender set in SendToNetwork. |
| 1338 | packet->ReserveExtension<AbsoluteSendTime>(); |
| 1339 | packet->ReserveExtension<TransmissionOffset>(); |
| 1340 | packet->ReserveExtension<TransportSequenceNumber>(); |
Niels Möller | 6893f3c | 2019-01-31 08:56:26 +0100 | [diff] [blame] | 1341 | |
Steve Anton | 4af9584 | 2018-04-06 11:09:46 -0700 | [diff] [blame] | 1342 | if (!mid_.empty()) { |
Steve Anton | 296a0ce | 2018-03-22 15:17:27 -0700 | [diff] [blame] | 1343 | // This is a no-op if the MID header extension is not registered. |
Steve Anton | 4af9584 | 2018-04-06 11:09:46 -0700 | [diff] [blame] | 1344 | packet->SetExtension<RtpMid>(mid_); |
Steve Anton | 296a0ce | 2018-03-22 15:17:27 -0700 | [diff] [blame] | 1345 | } |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 1346 | if (!rid_.empty()) { |
| 1347 | // This is a no-op if the RID header extension is not registered. |
| 1348 | packet->SetExtension<RtpStreamId>(rid_); |
| 1349 | } |
Danil Chapovalov | 5e57b17 | 2016-09-02 19:15:59 +0200 | [diff] [blame] | 1350 | return packet; |
| 1351 | } |
| 1352 | |
| 1353 | bool RTPSender::AssignSequenceNumber(RtpPacketToSend* packet) { |
| 1354 | rtc::CritScope lock(&send_critsect_); |
| 1355 | if (!sending_media_) |
| 1356 | return false; |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 1357 | RTC_DCHECK(packet->Ssrc() == ssrc_); |
Danil Chapovalov | 5e57b17 | 2016-09-02 19:15:59 +0200 | [diff] [blame] | 1358 | packet->SetSequenceNumber(sequence_number_++); |
| 1359 | |
| 1360 | // Remember marker bit to determine if padding can be inserted with |
| 1361 | // sequence number following |packet|. |
| 1362 | last_packet_marker_bit_ = packet->Marker(); |
Danil Chapovalov | b3179c7 | 2018-03-22 10:13:07 +0100 | [diff] [blame] | 1363 | // Remember payload type to use in the padding packet if rtx is disabled. |
| 1364 | last_payload_type_ = packet->PayloadType(); |
Danil Chapovalov | 5e57b17 | 2016-09-02 19:15:59 +0200 | [diff] [blame] | 1365 | // Save timestamps to generate timestamp field and extensions for the padding. |
| 1366 | last_rtp_timestamp_ = packet->Timestamp(); |
| 1367 | last_timestamp_time_ms_ = clock_->TimeInMilliseconds(); |
| 1368 | capture_time_ms_ = packet->capture_time_ms(); |
| 1369 | return true; |
| 1370 | } |
| 1371 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1372 | bool RTPSender::UpdateTransportSequenceNumber(RtpPacketToSend* packet, |
Sebastian Jansson | 30e2d6e | 2018-10-09 18:27:36 +0200 | [diff] [blame] | 1373 | int* packet_id) { |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1374 | RTC_DCHECK(packet); |
| 1375 | RTC_DCHECK(packet_id); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1376 | if (!rtp_header_extension_map_.IsRegistered(TransportSequenceNumber::kId)) |
stefan | a23fc62 | 2016-07-28 07:56:38 -0700 | [diff] [blame] | 1377 | return false; |
| 1378 | |
asapersson | 35151f3 | 2016-05-02 23:44:01 -0700 | [diff] [blame] | 1379 | if (!transport_sequence_number_allocator_) |
| 1380 | return false; |
| 1381 | |
| 1382 | *packet_id = transport_sequence_number_allocator_->AllocateSequenceNumber(); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1383 | |
| 1384 | if (!packet->SetExtension<TransportSequenceNumber>(*packet_id)) |
| 1385 | return false; |
| 1386 | |
asapersson | 35151f3 | 2016-05-02 23:44:01 -0700 | [diff] [blame] | 1387 | return true; |
sprang | 867fb52 | 2015-08-03 04:38:41 -0700 | [diff] [blame] | 1388 | } |
| 1389 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame] | 1390 | void RTPSender::SetSendingMediaStatus(bool enabled) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1391 | rtc::CritScope lock(&send_critsect_); |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 1392 | sending_media_ = enabled; |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1393 | } |
| 1394 | |
| 1395 | bool RTPSender::SendingMedia() const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1396 | rtc::CritScope lock(&send_critsect_); |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 1397 | return sending_media_; |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1398 | } |
| 1399 | |
Sebastian Jansson | 1bca65b | 2018-10-10 09:58:08 +0200 | [diff] [blame] | 1400 | void RTPSender::SetAsPartOfAllocation(bool part_of_allocation) { |
| 1401 | rtc::CritScope lock(&send_critsect_); |
| 1402 | force_part_of_allocation_ = part_of_allocation; |
| 1403 | } |
| 1404 | |
danilchap | 71fead2 | 2016-08-18 02:01:49 -0700 | [diff] [blame] | 1405 | void RTPSender::SetTimestampOffset(uint32_t timestamp) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1406 | rtc::CritScope lock(&send_critsect_); |
danilchap | 71fead2 | 2016-08-18 02:01:49 -0700 | [diff] [blame] | 1407 | timestamp_offset_ = timestamp; |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1408 | } |
| 1409 | |
danilchap | 71fead2 | 2016-08-18 02:01:49 -0700 | [diff] [blame] | 1410 | uint32_t RTPSender::TimestampOffset() const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1411 | rtc::CritScope lock(&send_critsect_); |
danilchap | 71fead2 | 2016-08-18 02:01:49 -0700 | [diff] [blame] | 1412 | return timestamp_offset_; |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1413 | } |
| 1414 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1415 | void RTPSender::SetSSRC(uint32_t ssrc) { |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 1416 | // This is configured via the API. |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1417 | rtc::CritScope lock(&send_critsect_); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1418 | |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 1419 | if (ssrc_ == ssrc) { |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 1420 | return; // Since it's same ssrc, don't reset anything. |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1421 | } |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 1422 | ssrc_.emplace(ssrc); |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 1423 | if (!sequence_number_forced_) { |
danilchap | 47a740b | 2015-12-15 00:30:07 -0800 | [diff] [blame] | 1424 | sequence_number_ = random_.Rand(1, kMaxInitRtpSeqNumber); |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1425 | } |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1426 | } |
| 1427 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1428 | uint32_t RTPSender::SSRC() const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1429 | rtc::CritScope lock(&send_critsect_); |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 1430 | RTC_DCHECK(ssrc_); |
| 1431 | return *ssrc_; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1432 | } |
| 1433 | |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 1434 | void RTPSender::SetRid(const std::string& rid) { |
| 1435 | // RID is used in simulcast scenario when multiple layers share the same mid. |
| 1436 | rtc::CritScope lock(&send_critsect_); |
| 1437 | RTC_DCHECK_LE(rid.length(), RtpStreamId::kMaxValueSizeBytes); |
| 1438 | rid_ = rid; |
| 1439 | } |
| 1440 | |
Steve Anton | 296a0ce | 2018-03-22 15:17:27 -0700 | [diff] [blame] | 1441 | void RTPSender::SetMid(const std::string& mid) { |
| 1442 | // This is configured via the API. |
| 1443 | rtc::CritScope lock(&send_critsect_); |
Steve Anton | 4af9584 | 2018-04-06 11:09:46 -0700 | [diff] [blame] | 1444 | mid_ = mid; |
Steve Anton | 296a0ce | 2018-03-22 15:17:27 -0700 | [diff] [blame] | 1445 | } |
| 1446 | |
Danil Chapovalov | d264df5 | 2018-06-14 12:59:38 +0200 | [diff] [blame] | 1447 | absl::optional<uint32_t> RTPSender::FlexfecSsrc() const { |
Niels Möller | 59ab1cf | 2019-02-06 22:48:11 +0100 | [diff] [blame] | 1448 | return flexfec_ssrc_; |
brandtr | 9dfff29 | 2016-11-14 05:14:50 -0800 | [diff] [blame] | 1449 | } |
| 1450 | |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1451 | void RTPSender::SetCsrcs(const std::vector<uint32_t>& csrcs) { |
sprang | a8ae6f2 | 2017-09-04 07:23:56 -0700 | [diff] [blame] | 1452 | RTC_DCHECK_LE(csrcs.size(), kRtpCsrcSize); |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1453 | rtc::CritScope lock(&send_critsect_); |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1454 | csrcs_ = csrcs; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1455 | } |
| 1456 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1457 | void RTPSender::SetSequenceNumber(uint16_t seq) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1458 | rtc::CritScope lock(&send_critsect_); |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 1459 | sequence_number_forced_ = true; |
| 1460 | sequence_number_ = seq; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1461 | } |
| 1462 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1463 | uint16_t RTPSender::SequenceNumber() const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1464 | rtc::CritScope lock(&send_critsect_); |
phoglund@webrtc.org | 43da54a | 2013-01-25 10:53:38 +0000 | [diff] [blame] | 1465 | return sequence_number_; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1466 | } |
| 1467 | |
Danil Chapovalov | 271195f | 2019-02-11 11:30:03 +0100 | [diff] [blame] | 1468 | static void CopyHeaderAndExtensionsToRtxPacket(const RtpPacketToSend& packet, |
| 1469 | RtpPacketToSend* rtx_packet) { |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 1470 | // Set the relevant fixed packet headers. The following are not set: |
| 1471 | // * Payload type - it is replaced in rtx packets. |
| 1472 | // * Sequence number - RTX has a separate sequence numbering. |
| 1473 | // * SSRC - RTX stream has its own SSRC. |
| 1474 | rtx_packet->SetMarker(packet.Marker()); |
| 1475 | rtx_packet->SetTimestamp(packet.Timestamp()); |
| 1476 | |
| 1477 | // Set the variable fields in the packet header: |
| 1478 | // * CSRCs - must be set before header extensions. |
| 1479 | // * Header extensions - replace Rid header with RepairedRid header. |
| 1480 | const std::vector<uint32_t> csrcs = packet.Csrcs(); |
| 1481 | rtx_packet->SetCsrcs(csrcs); |
| 1482 | for (int extension = kRtpExtensionNone + 1; |
| 1483 | extension < kRtpExtensionNumberOfExtensions; ++extension) { |
| 1484 | RTPExtensionType source_extension = |
| 1485 | static_cast<RTPExtensionType>(extension); |
| 1486 | // Rid header should be replaced with RepairedRid header |
| 1487 | RTPExtensionType destination_extension = |
| 1488 | source_extension == kRtpExtensionRtpStreamId |
| 1489 | ? kRtpExtensionRepairedRtpStreamId |
| 1490 | : source_extension; |
| 1491 | |
| 1492 | // Empty extensions should be supported, so not checking |source.empty()|. |
| 1493 | if (!packet.HasExtension(source_extension)) { |
| 1494 | continue; |
| 1495 | } |
| 1496 | |
| 1497 | rtc::ArrayView<const uint8_t> source = |
| 1498 | packet.FindExtension(source_extension); |
| 1499 | |
| 1500 | rtc::ArrayView<uint8_t> destination = |
| 1501 | rtx_packet->AllocateExtension(destination_extension, source.size()); |
| 1502 | |
| 1503 | // Could happen if any: |
| 1504 | // 1. Extension has 0 length. |
| 1505 | // 2. Extension is not registered in destination. |
| 1506 | // 3. Allocating extension in destination failed. |
| 1507 | if (destination.empty() || source.size() != destination.size()) { |
| 1508 | continue; |
| 1509 | } |
| 1510 | |
| 1511 | std::memcpy(destination.begin(), source.begin(), destination.size()); |
| 1512 | } |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 1513 | } |
| 1514 | |
| 1515 | std::unique_ptr<RtpPacketToSend> RTPSender::BuildRtxPacket( |
| 1516 | const RtpPacketToSend& packet) { |
Danil Chapovalov | 271195f | 2019-02-11 11:30:03 +0100 | [diff] [blame] | 1517 | std::unique_ptr<RtpPacketToSend> rtx_packet; |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 1518 | |
mikhal@webrtc.org | bda7f30 | 2013-03-15 23:21:52 +0000 | [diff] [blame] | 1519 | // Add original RTP header. |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1520 | { |
| 1521 | rtc::CritScope lock(&send_critsect_); |
| 1522 | if (!sending_media_) |
| 1523 | return nullptr; |
mikhal@webrtc.org | bda7f30 | 2013-03-15 23:21:52 +0000 | [diff] [blame] | 1524 | |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 1525 | RTC_DCHECK(ssrc_rtx_); |
| 1526 | |
brandtr | e6f98c7 | 2016-11-11 03:28:30 -0800 | [diff] [blame] | 1527 | // Replace payload type. |
| 1528 | auto kv = rtx_payload_type_map_.find(packet.PayloadType()); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1529 | if (kv == rtx_payload_type_map_.end()) |
brandtr | e6f98c7 | 2016-11-11 03:28:30 -0800 | [diff] [blame] | 1530 | return nullptr; |
Danil Chapovalov | 271195f | 2019-02-11 11:30:03 +0100 | [diff] [blame] | 1531 | |
| 1532 | rtx_packet = absl::make_unique<RtpPacketToSend>(&rtp_header_extension_map_, |
| 1533 | max_packet_size_); |
| 1534 | |
brandtr | e6f98c7 | 2016-11-11 03:28:30 -0800 | [diff] [blame] | 1535 | rtx_packet->SetPayloadType(kv->second); |
mflodman@webrtc.org | 9f5ebb5 | 2013-04-12 14:55:46 +0000 | [diff] [blame] | 1536 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1537 | // Replace sequence number. |
| 1538 | rtx_packet->SetSequenceNumber(sequence_number_rtx_++); |
mikhal@webrtc.org | bda7f30 | 2013-03-15 23:21:52 +0000 | [diff] [blame] | 1539 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1540 | // Replace SSRC. |
nisse | 7d59f6b | 2017-02-21 03:40:24 -0800 | [diff] [blame] | 1541 | rtx_packet->SetSsrc(*ssrc_rtx_); |
Steve Anton | 296a0ce | 2018-03-22 15:17:27 -0700 | [diff] [blame] | 1542 | |
Danil Chapovalov | 271195f | 2019-02-11 11:30:03 +0100 | [diff] [blame] | 1543 | CopyHeaderAndExtensionsToRtxPacket(packet, rtx_packet.get()); |
| 1544 | |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 1545 | // The spec indicates that it is possible for a sender to stop sending mids |
| 1546 | // once the SSRCs have been bound on the receiver. As a result the source |
| 1547 | // rtp packet might not have the MID header extension set. |
| 1548 | // However, the SSRC of the RTX stream might not have been bound on the |
| 1549 | // receiver. This means that we should include it here. |
| 1550 | // The same argument goes for the Repaired RID extension. |
Steve Anton | 4af9584 | 2018-04-06 11:09:46 -0700 | [diff] [blame] | 1551 | if (!mid_.empty()) { |
Steve Anton | 296a0ce | 2018-03-22 15:17:27 -0700 | [diff] [blame] | 1552 | // This is a no-op if the MID header extension is not registered. |
Steve Anton | 4af9584 | 2018-04-06 11:09:46 -0700 | [diff] [blame] | 1553 | rtx_packet->SetExtension<RtpMid>(mid_); |
Steve Anton | 296a0ce | 2018-03-22 15:17:27 -0700 | [diff] [blame] | 1554 | } |
Amit Hilbuch | 77938e6 | 2018-12-21 09:23:38 -0800 | [diff] [blame] | 1555 | if (!rid_.empty()) { |
| 1556 | // This is a no-op if the Repaired-RID header extension is not registered. |
| 1557 | // rtx_packet->SetExtension<RepairedRtpStreamId>(rid_); |
| 1558 | } |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1559 | } |
Danil Chapovalov | 271195f | 2019-02-11 11:30:03 +0100 | [diff] [blame] | 1560 | RTC_DCHECK(rtx_packet); |
mikhal@webrtc.org | bda7f30 | 2013-03-15 23:21:52 +0000 | [diff] [blame] | 1561 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1562 | uint8_t* rtx_payload = |
| 1563 | rtx_packet->AllocatePayload(packet.payload_size() + kRtxHeaderSize); |
Danil Chapovalov | 271195f | 2019-02-11 11:30:03 +0100 | [diff] [blame] | 1564 | if (rtx_payload == nullptr) |
| 1565 | return nullptr; |
| 1566 | |
mikhal@webrtc.org | bda7f30 | 2013-03-15 23:21:52 +0000 | [diff] [blame] | 1567 | // Add OSN (original sequence number). |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1568 | ByteWriter<uint16_t>::WriteBigEndian(rtx_payload, packet.SequenceNumber()); |
mikhal@webrtc.org | bda7f30 | 2013-03-15 23:21:52 +0000 | [diff] [blame] | 1569 | |
| 1570 | // Add original payload data. |
danilchap | 96c1587 | 2016-11-21 01:35:29 -0800 | [diff] [blame] | 1571 | auto payload = packet.payload(); |
| 1572 | memcpy(rtx_payload + kRtxHeaderSize, payload.data(), payload.size()); |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1573 | |
Dino Radaković | 1807d57 | 2018-02-22 14:18:06 +0100 | [diff] [blame] | 1574 | // Add original application data. |
| 1575 | rtx_packet->set_application_data(packet.application_data()); |
| 1576 | |
Danil Chapovalov | 31e4e80 | 2016-08-03 18:27:40 +0200 | [diff] [blame] | 1577 | return rtx_packet; |
mikhal@webrtc.org | bda7f30 | 2013-03-15 23:21:52 +0000 | [diff] [blame] | 1578 | } |
| 1579 | |
sprang@webrtc.org | ebad765 | 2013-12-05 14:29:02 +0000 | [diff] [blame] | 1580 | void RTPSender::RegisterRtpStatisticsCallback( |
| 1581 | StreamDataCountersCallback* callback) { |
danilchap | 7c9426c | 2016-04-14 03:05:31 -0700 | [diff] [blame] | 1582 | rtc::CritScope cs(&statistics_crit_); |
sprang@webrtc.org | ebad765 | 2013-12-05 14:29:02 +0000 | [diff] [blame] | 1583 | rtp_stats_callback_ = callback; |
| 1584 | } |
| 1585 | |
| 1586 | StreamDataCountersCallback* RTPSender::GetRtpStatisticsCallback() const { |
danilchap | 7c9426c | 2016-04-14 03:05:31 -0700 | [diff] [blame] | 1587 | rtc::CritScope cs(&statistics_crit_); |
sprang@webrtc.org | ebad765 | 2013-12-05 14:29:02 +0000 | [diff] [blame] | 1588 | return rtp_stats_callback_; |
| 1589 | } |
| 1590 | |
stefan@webrtc.org | 0bae1fa | 2014-11-05 14:05:29 +0000 | [diff] [blame] | 1591 | uint32_t RTPSender::BitrateSent() const { |
sprang | cd349d9 | 2016-07-13 09:11:28 -0700 | [diff] [blame] | 1592 | rtc::CritScope cs(&statistics_crit_); |
| 1593 | return total_bitrate_sent_.Rate(clock_->TimeInMilliseconds()).value_or(0); |
sprang@webrtc.org | 6811b6e | 2013-12-13 09:46:59 +0000 | [diff] [blame] | 1594 | } |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1595 | |
| 1596 | void RTPSender::SetRtpState(const RtpState& rtp_state) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1597 | rtc::CritScope lock(&send_critsect_); |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1598 | sequence_number_ = rtp_state.sequence_number; |
| 1599 | sequence_number_forced_ = true; |
danilchap | 71fead2 | 2016-08-18 02:01:49 -0700 | [diff] [blame] | 1600 | timestamp_offset_ = rtp_state.start_timestamp; |
danilchap | e5b4141 | 2016-08-22 03:39:23 -0700 | [diff] [blame] | 1601 | last_rtp_timestamp_ = rtp_state.timestamp; |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1602 | capture_time_ms_ = rtp_state.capture_time_ms; |
| 1603 | last_timestamp_time_ms_ = rtp_state.last_timestamp_time_ms; |
stefan@webrtc.org | 8b94e3d | 2014-07-17 16:10:14 +0000 | [diff] [blame] | 1604 | media_has_been_sent_ = rtp_state.media_has_been_sent; |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1605 | } |
| 1606 | |
| 1607 | RtpState RTPSender::GetRtpState() const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1608 | rtc::CritScope lock(&send_critsect_); |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1609 | |
| 1610 | RtpState state; |
| 1611 | state.sequence_number = sequence_number_; |
danilchap | 71fead2 | 2016-08-18 02:01:49 -0700 | [diff] [blame] | 1612 | state.start_timestamp = timestamp_offset_; |
danilchap | e5b4141 | 2016-08-22 03:39:23 -0700 | [diff] [blame] | 1613 | state.timestamp = last_rtp_timestamp_; |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1614 | state.capture_time_ms = capture_time_ms_; |
| 1615 | state.last_timestamp_time_ms = last_timestamp_time_ms_; |
stefan@webrtc.org | 8b94e3d | 2014-07-17 16:10:14 +0000 | [diff] [blame] | 1616 | state.media_has_been_sent = media_has_been_sent_; |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1617 | |
| 1618 | return state; |
| 1619 | } |
| 1620 | |
| 1621 | void RTPSender::SetRtxRtpState(const RtpState& rtp_state) { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1622 | rtc::CritScope lock(&send_critsect_); |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1623 | sequence_number_rtx_ = rtp_state.sequence_number; |
| 1624 | } |
| 1625 | |
| 1626 | RtpState RTPSender::GetRtxRtpState() const { |
tommi | ae695e9 | 2016-02-02 08:31:45 -0800 | [diff] [blame] | 1627 | rtc::CritScope lock(&send_critsect_); |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1628 | |
| 1629 | RtpState state; |
| 1630 | state.sequence_number = sequence_number_rtx_; |
danilchap | 71fead2 | 2016-08-18 02:01:49 -0700 | [diff] [blame] | 1631 | state.start_timestamp = timestamp_offset_; |
pbos@webrtc.org | 2bb1bda | 2014-07-07 13:06:48 +0000 | [diff] [blame] | 1632 | |
| 1633 | return state; |
| 1634 | } |
| 1635 | |
philipel | 8aadd50 | 2017-02-23 02:56:13 -0800 | [diff] [blame] | 1636 | void RTPSender::AddPacketToTransportFeedback( |
| 1637 | uint16_t packet_id, |
| 1638 | const RtpPacketToSend& packet, |
| 1639 | const PacedPacketInfo& pacing_info) { |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 1640 | if (transport_feedback_observer_) { |
Erik Språng | 30a276b | 2019-04-23 12:00:11 +0200 | [diff] [blame] | 1641 | size_t packet_size = packet.payload_size() + packet.padding_size(); |
| 1642 | if (send_side_bwe_with_overhead_) { |
| 1643 | packet_size = packet.size(); |
| 1644 | } |
| 1645 | |
| 1646 | RtpPacketSendInfo packet_info; |
| 1647 | packet_info.ssrc = SSRC(); |
| 1648 | packet_info.transport_sequence_number = packet_id; |
Erik Språng | 490d76c | 2019-05-07 09:29:15 -0700 | [diff] [blame] | 1649 | packet_info.has_rtp_sequence_number = true; |
Erik Språng | 30a276b | 2019-04-23 12:00:11 +0200 | [diff] [blame] | 1650 | packet_info.rtp_sequence_number = packet.SequenceNumber(); |
| 1651 | packet_info.length = packet_size; |
| 1652 | packet_info.pacing_info = pacing_info; |
| 1653 | transport_feedback_observer_->OnAddPacket(packet_info); |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 1654 | } |
| 1655 | } |
| 1656 | |
| 1657 | void RTPSender::UpdateRtpOverhead(const RtpPacketToSend& packet) { |
| 1658 | if (!overhead_observer_) |
| 1659 | return; |
nisse | 284542b | 2017-01-10 08:58:32 -0800 | [diff] [blame] | 1660 | size_t overhead_bytes_per_packet; |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 1661 | { |
| 1662 | rtc::CritScope lock(&send_critsect_); |
| 1663 | if (rtp_overhead_bytes_per_packet_ == packet.headers_size()) { |
| 1664 | return; |
| 1665 | } |
| 1666 | rtp_overhead_bytes_per_packet_ = packet.headers_size(); |
nisse | 284542b | 2017-01-10 08:58:32 -0800 | [diff] [blame] | 1667 | overhead_bytes_per_packet = rtp_overhead_bytes_per_packet_; |
michaelt | 4da3044 | 2016-11-17 01:38:43 -0800 | [diff] [blame] | 1668 | } |
| 1669 | overhead_observer_->OnOverheadChanged(overhead_bytes_per_packet); |
| 1670 | } |
| 1671 | |
sprang | 168794c | 2017-07-06 04:38:06 -0700 | [diff] [blame] | 1672 | int64_t RTPSender::LastTimestampTimeMs() const { |
| 1673 | rtc::CritScope lock(&send_critsect_); |
| 1674 | return last_timestamp_time_ms_; |
| 1675 | } |
| 1676 | |
Erik Språng | 8b10192 | 2018-01-18 11:58:05 -0800 | [diff] [blame] | 1677 | void RTPSender::SetRtt(int64_t rtt_ms) { |
| 1678 | packet_history_.SetRtt(rtt_ms); |
| 1679 | flexfec_packet_history_.SetRtt(rtt_ms); |
| 1680 | } |
Erik Språng | 490d76c | 2019-05-07 09:29:15 -0700 | [diff] [blame] | 1681 | |
| 1682 | void RTPSender::OnPacketsAcknowledged( |
| 1683 | rtc::ArrayView<const uint16_t> sequence_numbers) { |
| 1684 | packet_history_.CullAcknowledgedPackets(sequence_numbers); |
| 1685 | } |
pwestin@webrtc.org | c66e8b3 | 2012-11-07 17:01:04 +0000 | [diff] [blame] | 1686 | } // namespace webrtc |