marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| 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 | |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 11 | #include <list> |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 12 | #include <memory> |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 13 | |
Steve Anton | 91c2606 | 2019-03-28 10:56:11 -0700 | [diff] [blame] | 14 | #include "absl/algorithm/container.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 15 | #include "modules/rtp_rtcp/source/byte_io.h" |
| 16 | #include "modules/rtp_rtcp/source/fec_test_helper.h" |
| 17 | #include "modules/rtp_rtcp/source/flexfec_header_reader_writer.h" |
| 18 | #include "modules/rtp_rtcp/source/forward_error_correction.h" |
| 19 | #include "modules/rtp_rtcp/source/ulpfec_header_reader_writer.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 20 | #include "rtc_base/random.h" |
| 21 | #include "test/gtest.h" |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 22 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 23 | namespace webrtc { |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 24 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 25 | namespace { |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 26 | |
| 27 | // Transport header size in bytes. Assume UDP/IPv4 as a reasonable minimum. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 28 | constexpr size_t kTransportOverhead = 28; |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 29 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 30 | constexpr uint32_t kMediaSsrc = 83542; |
brandtr | 0496de2 | 2016-10-03 00:43:25 -0700 | [diff] [blame] | 31 | constexpr uint32_t kFlexfecSsrc = 43245; |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 32 | |
Rasmus Brandt | d73ba12 | 2017-12-07 10:22:49 +0100 | [diff] [blame] | 33 | constexpr size_t kMaxMediaPackets = 48; |
| 34 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 35 | // Deep copies |src| to |dst|, but only keeps every Nth packet. |
| 36 | void DeepCopyEveryNthPacket(const ForwardErrorCorrection::PacketList& src, |
| 37 | int n, |
| 38 | ForwardErrorCorrection::PacketList* dst) { |
| 39 | RTC_DCHECK_GT(n, 0); |
| 40 | int i = 0; |
| 41 | for (const auto& packet : src) { |
| 42 | if (i % n == 0) { |
| 43 | dst->emplace_back(new ForwardErrorCorrection::Packet(*packet)); |
| 44 | } |
| 45 | ++i; |
| 46 | } |
| 47 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 48 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 49 | } // namespace |
| 50 | |
| 51 | using ::testing::Types; |
| 52 | |
| 53 | template <typename ForwardErrorCorrectionType> |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 54 | class RtpFecTest : public ::testing::Test { |
| 55 | protected: |
| 56 | RtpFecTest() |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 57 | : random_(0xabcdef123456), |
| 58 | media_packet_generator_( |
| 59 | kRtpHeaderSize, // Minimum packet size. |
| 60 | IP_PACKET_SIZE - kRtpHeaderSize - kTransportOverhead - |
| 61 | fec_.MaxPacketOverhead(), // Maximum packet size. |
| 62 | kMediaSsrc, |
| 63 | &random_) {} |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 64 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 65 | // Construct |received_packets_|: a subset of the media and FEC packets. |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 66 | // |
| 67 | // Media packet "i" is lost if media_loss_mask_[i] = 1, received if |
| 68 | // media_loss_mask_[i] = 0. |
| 69 | // FEC packet "i" is lost if fec_loss_mask_[i] = 1, received if |
| 70 | // fec_loss_mask_[i] = 0. |
| 71 | void NetworkReceivedPackets(int* media_loss_mask, int* fec_loss_mask); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 72 | |
| 73 | // Add packet from |packet_list| to list of received packets, using the |
| 74 | // |loss_mask|. |
| 75 | // The |packet_list| may be a media packet list (is_fec = false), or a |
| 76 | // FEC packet list (is_fec = true). |
brandtr | 35c480c | 2016-08-09 01:23:23 -0700 | [diff] [blame] | 77 | template <typename T> |
| 78 | void ReceivedPackets(const T& packet_list, int* loss_mask, bool is_fec); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 79 | |
| 80 | // Check for complete recovery after FEC decoding. |
| 81 | bool IsRecoveryComplete(); |
| 82 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 83 | ForwardErrorCorrectionType fec_; |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 84 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 85 | Random random_; |
| 86 | test::fec::MediaPacketGenerator media_packet_generator_; |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 87 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 88 | ForwardErrorCorrection::PacketList media_packets_; |
| 89 | std::list<ForwardErrorCorrection::Packet*> generated_fec_packets_; |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 90 | std::vector<std::unique_ptr<ForwardErrorCorrection::ReceivedPacket>> |
| 91 | received_packets_; |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 92 | ForwardErrorCorrection::RecoveredPacketList recovered_packets_; |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 93 | |
Rasmus Brandt | 78db158 | 2016-09-21 09:19:34 +0200 | [diff] [blame] | 94 | int media_loss_mask_[kUlpfecMaxMediaPackets]; |
| 95 | int fec_loss_mask_[kUlpfecMaxMediaPackets]; |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 96 | }; |
| 97 | |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 98 | template <typename ForwardErrorCorrectionType> |
| 99 | void RtpFecTest<ForwardErrorCorrectionType>::NetworkReceivedPackets( |
| 100 | int* media_loss_mask, |
| 101 | int* fec_loss_mask) { |
| 102 | constexpr bool kFecPacket = true; |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 103 | this->received_packets_.clear(); |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 104 | ReceivedPackets(media_packets_, media_loss_mask, !kFecPacket); |
| 105 | ReceivedPackets(generated_fec_packets_, fec_loss_mask, kFecPacket); |
| 106 | } |
| 107 | |
| 108 | template <typename ForwardErrorCorrectionType> |
| 109 | template <typename PacketListType> |
| 110 | void RtpFecTest<ForwardErrorCorrectionType>::ReceivedPackets( |
| 111 | const PacketListType& packet_list, |
| 112 | int* loss_mask, |
| 113 | bool is_fec) { |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 114 | uint16_t fec_seq_num = ForwardErrorCorrectionType::GetFirstFecSeqNum( |
| 115 | media_packet_generator_.GetNextSeqNum()); |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 116 | int packet_idx = 0; |
| 117 | |
| 118 | for (const auto& packet : packet_list) { |
| 119 | if (loss_mask[packet_idx] == 0) { |
| 120 | std::unique_ptr<ForwardErrorCorrection::ReceivedPacket> received_packet( |
| 121 | new ForwardErrorCorrection::ReceivedPacket()); |
| 122 | received_packet->pkt = new ForwardErrorCorrection::Packet(); |
Ilya Nikolaevskiy | a5d952f | 2019-09-03 11:07:37 +0200 | [diff] [blame] | 123 | received_packet->pkt->data = packet->data; |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 124 | received_packet->is_fec = is_fec; |
| 125 | if (!is_fec) { |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 126 | received_packet->ssrc = kMediaSsrc; |
| 127 | // For media packets, the sequence number is obtained from the |
| 128 | // RTP header as written by MediaPacketGenerator::ConstructMediaPackets. |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 129 | received_packet->seq_num = |
Danil Chapovalov | e15dc58 | 2021-01-07 15:24:05 +0100 | [diff] [blame] | 130 | ByteReader<uint16_t>::ReadBigEndian(packet->data.data() + 2); |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 131 | } else { |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 132 | received_packet->ssrc = ForwardErrorCorrectionType::kFecSsrc; |
| 133 | // For FEC packets, we simulate the sequence numbers differently |
| 134 | // depending on if ULPFEC or FlexFEC is used. See the definition of |
| 135 | // ForwardErrorCorrectionType::GetFirstFecSeqNum. |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 136 | received_packet->seq_num = fec_seq_num; |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 137 | } |
| 138 | received_packets_.push_back(std::move(received_packet)); |
| 139 | } |
| 140 | packet_idx++; |
| 141 | // Sequence number of FEC packets are defined as increment by 1 from |
| 142 | // last media packet in frame. |
| 143 | if (is_fec) |
| 144 | fec_seq_num++; |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | template <typename ForwardErrorCorrectionType> |
| 149 | bool RtpFecTest<ForwardErrorCorrectionType>::IsRecoveryComplete() { |
Steve Anton | 91c2606 | 2019-03-28 10:56:11 -0700 | [diff] [blame] | 150 | // We must have equally many recovered packets as original packets and all |
| 151 | // recovered packets must be identical to the corresponding original packets. |
| 152 | return absl::c_equal( |
| 153 | media_packets_, recovered_packets_, |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 154 | [](const std::unique_ptr<ForwardErrorCorrection::Packet>& media_packet, |
| 155 | const std::unique_ptr<ForwardErrorCorrection::RecoveredPacket>& |
| 156 | recovered_packet) { |
Ilya Nikolaevskiy | a5d952f | 2019-09-03 11:07:37 +0200 | [diff] [blame] | 157 | if (media_packet->data.size() != recovered_packet->pkt->data.size()) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 158 | return false; |
| 159 | } |
Ilya Nikolaevskiy | a5d952f | 2019-09-03 11:07:37 +0200 | [diff] [blame] | 160 | if (memcmp(media_packet->data.cdata(), |
| 161 | recovered_packet->pkt->data.cdata(), |
| 162 | media_packet->data.size()) != 0) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 163 | return false; |
| 164 | } |
| 165 | return true; |
Steve Anton | 91c2606 | 2019-03-28 10:56:11 -0700 | [diff] [blame] | 166 | }); |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 167 | } |
| 168 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 169 | // Define gTest typed test to loop over both ULPFEC and FlexFEC. |
| 170 | // Since the tests now are parameterized, we need to access |
| 171 | // member variables using |this|, thereby enforcing runtime |
| 172 | // resolution. |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 173 | |
brandtr | 0496de2 | 2016-10-03 00:43:25 -0700 | [diff] [blame] | 174 | class FlexfecForwardErrorCorrection : public ForwardErrorCorrection { |
| 175 | public: |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 176 | static const uint32_t kFecSsrc = kFlexfecSsrc; |
| 177 | |
brandtr | 0496de2 | 2016-10-03 00:43:25 -0700 | [diff] [blame] | 178 | FlexfecForwardErrorCorrection() |
| 179 | : ForwardErrorCorrection( |
| 180 | std::unique_ptr<FecHeaderReader>(new FlexfecHeaderReader()), |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 181 | std::unique_ptr<FecHeaderWriter>(new FlexfecHeaderWriter()), |
| 182 | kFecSsrc, |
| 183 | kMediaSsrc) {} |
| 184 | |
| 185 | // For FlexFEC we let the FEC packet sequence numbers be independent of |
| 186 | // the media packet sequence numbers. |
| 187 | static uint16_t GetFirstFecSeqNum(uint16_t next_media_seq_num) { |
| 188 | Random random(0xbe110); |
| 189 | return random.Rand<uint16_t>(); |
| 190 | } |
brandtr | 0496de2 | 2016-10-03 00:43:25 -0700 | [diff] [blame] | 191 | }; |
| 192 | |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 193 | class UlpfecForwardErrorCorrection : public ForwardErrorCorrection { |
| 194 | public: |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 195 | static const uint32_t kFecSsrc = kMediaSsrc; |
| 196 | |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 197 | UlpfecForwardErrorCorrection() |
| 198 | : ForwardErrorCorrection( |
| 199 | std::unique_ptr<FecHeaderReader>(new UlpfecHeaderReader()), |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 200 | std::unique_ptr<FecHeaderWriter>(new UlpfecHeaderWriter()), |
| 201 | kFecSsrc, |
| 202 | kMediaSsrc) {} |
| 203 | |
| 204 | // For ULPFEC we assume that the FEC packets are subsequent to the media |
| 205 | // packets in terms of sequence number. |
| 206 | static uint16_t GetFirstFecSeqNum(uint16_t next_media_seq_num) { |
| 207 | return next_media_seq_num; |
| 208 | } |
Rasmus Brandt | ea7beb9 | 2016-09-21 12:01:19 +0200 | [diff] [blame] | 209 | }; |
| 210 | |
brandtr | 0496de2 | 2016-10-03 00:43:25 -0700 | [diff] [blame] | 211 | using FecTypes = |
| 212 | Types<FlexfecForwardErrorCorrection, UlpfecForwardErrorCorrection>; |
Mirko Bonadei | c84f661 | 2019-01-31 12:20:57 +0100 | [diff] [blame] | 213 | TYPED_TEST_SUITE(RtpFecTest, FecTypes); |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 214 | |
Rasmus Brandt | d73ba12 | 2017-12-07 10:22:49 +0100 | [diff] [blame] | 215 | TYPED_TEST(RtpFecTest, WillProtectMediaPacketsWithLargeSequenceNumberGap) { |
| 216 | constexpr int kNumImportantPackets = 0; |
| 217 | constexpr bool kUseUnequalProtection = false; |
| 218 | constexpr int kNumMediaPackets = 2; |
| 219 | constexpr uint8_t kProtectionFactor = 127; |
| 220 | |
| 221 | this->media_packets_ = |
| 222 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
| 223 | |
| 224 | // Create |kMaxMediaPackets - 1| sequence number difference. |
Danil Chapovalov | e15dc58 | 2021-01-07 15:24:05 +0100 | [diff] [blame] | 225 | ByteWriter<uint16_t>::WriteBigEndian( |
| 226 | this->media_packets_.front()->data.MutableData() + 2, 1); |
| 227 | ByteWriter<uint16_t>::WriteBigEndian( |
| 228 | this->media_packets_.back()->data.MutableData() + 2, kMaxMediaPackets); |
Rasmus Brandt | d73ba12 | 2017-12-07 10:22:49 +0100 | [diff] [blame] | 229 | |
| 230 | EXPECT_EQ( |
| 231 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 232 | kNumImportantPackets, kUseUnequalProtection, |
| 233 | kFecMaskBursty, &this->generated_fec_packets_)); |
| 234 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
| 235 | } |
| 236 | |
| 237 | TYPED_TEST(RtpFecTest, |
| 238 | WillNotProtectMediaPacketsWithTooLargeSequenceNumberGap) { |
| 239 | constexpr int kNumImportantPackets = 0; |
| 240 | constexpr bool kUseUnequalProtection = false; |
| 241 | constexpr int kNumMediaPackets = 2; |
| 242 | constexpr uint8_t kProtectionFactor = 127; |
| 243 | |
| 244 | this->media_packets_ = |
| 245 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
| 246 | |
| 247 | // Create |kMaxMediaPackets| sequence number difference. |
Danil Chapovalov | e15dc58 | 2021-01-07 15:24:05 +0100 | [diff] [blame] | 248 | ByteWriter<uint16_t>::WriteBigEndian( |
| 249 | this->media_packets_.front()->data.MutableData() + 2, 1); |
| 250 | ByteWriter<uint16_t>::WriteBigEndian( |
| 251 | this->media_packets_.back()->data.MutableData() + 2, |
| 252 | kMaxMediaPackets + 1); |
Rasmus Brandt | d73ba12 | 2017-12-07 10:22:49 +0100 | [diff] [blame] | 253 | |
| 254 | EXPECT_EQ( |
| 255 | -1, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 256 | kNumImportantPackets, kUseUnequalProtection, |
| 257 | kFecMaskBursty, &this->generated_fec_packets_)); |
| 258 | EXPECT_TRUE(this->generated_fec_packets_.empty()); |
| 259 | } |
| 260 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 261 | TYPED_TEST(RtpFecTest, FecRecoveryNoLoss) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 262 | constexpr int kNumImportantPackets = 0; |
| 263 | constexpr bool kUseUnequalProtection = false; |
| 264 | constexpr int kNumMediaPackets = 4; |
| 265 | constexpr uint8_t kProtectionFactor = 60; |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 266 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 267 | this->media_packets_ = |
| 268 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 269 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 270 | EXPECT_EQ( |
| 271 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 272 | kNumImportantPackets, kUseUnequalProtection, |
| 273 | kFecMaskBursty, &this->generated_fec_packets_)); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 274 | |
| 275 | // Expect 1 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 276 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 277 | |
| 278 | // No packets lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 279 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 280 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 281 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 282 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 283 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 284 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 285 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 286 | |
| 287 | // No packets lost, expect complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 288 | EXPECT_TRUE(this->IsRecoveryComplete()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 289 | } |
| 290 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 291 | TYPED_TEST(RtpFecTest, FecRecoveryWithLoss) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 292 | constexpr int kNumImportantPackets = 0; |
| 293 | constexpr bool kUseUnequalProtection = false; |
| 294 | constexpr int kNumMediaPackets = 4; |
| 295 | constexpr uint8_t kProtectionFactor = 60; |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 296 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 297 | this->media_packets_ = |
| 298 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 299 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 300 | EXPECT_EQ( |
| 301 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 302 | kNumImportantPackets, kUseUnequalProtection, |
| 303 | kFecMaskBursty, &this->generated_fec_packets_)); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 304 | |
| 305 | // Expect 1 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 306 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 307 | |
| 308 | // 1 media packet lost |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 309 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 310 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 311 | this->media_loss_mask_[3] = 1; |
| 312 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 313 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 314 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 315 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 316 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 317 | |
| 318 | // One packet lost, one FEC packet, expect complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 319 | EXPECT_TRUE(this->IsRecoveryComplete()); |
| 320 | this->recovered_packets_.clear(); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 321 | |
| 322 | // 2 media packets lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 323 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 324 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 325 | this->media_loss_mask_[1] = 1; |
| 326 | this->media_loss_mask_[3] = 1; |
| 327 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 328 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 329 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 330 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 331 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 332 | |
| 333 | // 2 packets lost, one FEC packet, cannot get complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 334 | EXPECT_FALSE(this->IsRecoveryComplete()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 335 | } |
| 336 | |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 337 | // Verify that we don't use an old FEC packet for FEC decoding. |
Niels Möller | 958288a | 2017-10-02 13:51:36 +0200 | [diff] [blame] | 338 | TYPED_TEST(RtpFecTest, NoFecRecoveryWithOldFecPacket) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 339 | constexpr int kNumImportantPackets = 0; |
| 340 | constexpr bool kUseUnequalProtection = false; |
| 341 | constexpr uint8_t kProtectionFactor = 20; |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 342 | |
| 343 | // Two frames: first frame (old) with two media packets and 1 FEC packet. |
Niels Möller | 958288a | 2017-10-02 13:51:36 +0200 | [diff] [blame] | 344 | // Third frame (new) with 3 media packets, and no FEC packets. |
| 345 | // |
| 346 | // #0(media) #1(media) #2(FEC) ----Frame 1----- |
| 347 | // #32767(media) 32768(media) 32769(media) ----Frame 2----- |
| 348 | // #65535(media) #0(media) #1(media). ----Frame 3----- |
| 349 | // If we lose either packet 0 or 1 of third frame, FEC decoding should not |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 350 | // try to decode using "old" FEC packet #2. |
| 351 | |
| 352 | // Construct media packets for first frame, starting at sequence number 0. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 353 | this->media_packets_ = |
| 354 | this->media_packet_generator_.ConstructMediaPackets(2, 0); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 355 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 356 | EXPECT_EQ( |
| 357 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 358 | kNumImportantPackets, kUseUnequalProtection, |
| 359 | kFecMaskBursty, &this->generated_fec_packets_)); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 360 | // Expect 1 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 361 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 362 | // Add FEC packet (seq#2) of this first frame to received list (i.e., assume |
| 363 | // the two media packet were lost). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 364 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 365 | this->ReceivedPackets(this->generated_fec_packets_, this->fec_loss_mask_, |
| 366 | true); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 367 | |
| 368 | // Construct media packets for second frame, with sequence number wrap. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 369 | this->media_packets_ = |
Niels Möller | 958288a | 2017-10-02 13:51:36 +0200 | [diff] [blame] | 370 | this->media_packet_generator_.ConstructMediaPackets(3, 32767); |
| 371 | |
| 372 | // Expect 3 media packets for this frame. |
| 373 | EXPECT_EQ(3u, this->media_packets_.size()); |
| 374 | |
| 375 | // No packets lost |
| 376 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 377 | this->ReceivedPackets(this->media_packets_, this->media_loss_mask_, false); |
| 378 | |
| 379 | // Construct media packets for third frame, with sequence number wrap. |
| 380 | this->media_packets_ = |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 381 | this->media_packet_generator_.ConstructMediaPackets(3, 65535); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 382 | |
| 383 | // Expect 3 media packets for this frame. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 384 | EXPECT_EQ(3u, this->media_packets_.size()); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 385 | |
| 386 | // Second media packet lost (seq#0). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 387 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 388 | this->media_loss_mask_[1] = 1; |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 389 | // Add packets #65535, and #1 to received list. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 390 | this->ReceivedPackets(this->media_packets_, this->media_loss_mask_, false); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 391 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 392 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 393 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 394 | } |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 395 | |
Niels Möller | 958288a | 2017-10-02 13:51:36 +0200 | [diff] [blame] | 396 | // Expect that no decoding is done to get missing packet (seq#0) of third |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 397 | // frame, using old FEC packet (seq#2) from first (old) frame. So number of |
Niels Möller | 958288a | 2017-10-02 13:51:36 +0200 | [diff] [blame] | 398 | // recovered packets is 5 (0 from first frame, three from second frame, and 2 |
| 399 | // for the third frame, with no packets recovered via FEC). |
| 400 | EXPECT_EQ(5u, this->recovered_packets_.size()); |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 401 | EXPECT_TRUE(this->recovered_packets_.size() != this->media_packets_.size()); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 402 | } |
| 403 | |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 404 | // Verify we can still recover frame if sequence number wrap occurs within |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 405 | // the frame and FEC packet following wrap is received after media packets. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 406 | TYPED_TEST(RtpFecTest, FecRecoveryWithSeqNumGapOneFrameRecovery) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 407 | constexpr int kNumImportantPackets = 0; |
| 408 | constexpr bool kUseUnequalProtection = false; |
| 409 | constexpr uint8_t kProtectionFactor = 20; |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 410 | |
| 411 | // One frame, with sequence number wrap in media packets. |
| 412 | // -----Frame 1---- |
| 413 | // #65534(media) #65535(media) #0(media) #1(FEC). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 414 | this->media_packets_ = |
| 415 | this->media_packet_generator_.ConstructMediaPackets(3, 65534); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 416 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 417 | EXPECT_EQ( |
| 418 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 419 | kNumImportantPackets, kUseUnequalProtection, |
| 420 | kFecMaskBursty, &this->generated_fec_packets_)); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 421 | |
| 422 | // Expect 1 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 423 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 424 | |
| 425 | // Lose one media packet (seq# 65535). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 426 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 427 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 428 | this->media_loss_mask_[1] = 1; |
| 429 | this->ReceivedPackets(this->media_packets_, this->media_loss_mask_, false); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 430 | // Add FEC packet to received list following the media packets. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 431 | this->ReceivedPackets(this->generated_fec_packets_, this->fec_loss_mask_, |
| 432 | true); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 433 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 434 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 435 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 436 | } |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 437 | |
| 438 | // Expect 3 media packets in recovered list, and complete recovery. |
| 439 | // Wrap-around won't remove FEC packet, as it follows the wrap. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 440 | EXPECT_EQ(3u, this->recovered_packets_.size()); |
| 441 | EXPECT_TRUE(this->IsRecoveryComplete()); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 442 | } |
| 443 | |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 444 | // Sequence number wrap occurs within the ULPFEC packets for the frame. |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 445 | // Same problem will occur if wrap is within media packets but ULPFEC packet is |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 446 | // received before the media packets. This may be improved if timing information |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 447 | // is used to detect old ULPFEC packets. |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 448 | |
| 449 | // TODO(nisse): There's some logic to discard ULPFEC packets at wrap-around, |
| 450 | // however, that is not actually exercised by this test: When the first FEC |
| 451 | // packet is processed, it results in full recovery of one media packet and the |
| 452 | // FEC packet is forgotten. And then the wraparound isn't noticed when the next |
| 453 | // FEC packet is received. We should fix wraparound handling, which currently |
| 454 | // appears broken, and then figure out how to test it properly. |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 455 | using RtpFecTestUlpfecOnly = RtpFecTest<UlpfecForwardErrorCorrection>; |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 456 | TEST_F(RtpFecTestUlpfecOnly, FecRecoveryWithSeqNumGapOneFrameRecovery) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 457 | constexpr int kNumImportantPackets = 0; |
| 458 | constexpr bool kUseUnequalProtection = false; |
| 459 | constexpr uint8_t kProtectionFactor = 200; |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 460 | |
| 461 | // 1 frame: 3 media packets and 2 FEC packets. |
| 462 | // Sequence number wrap in FEC packets. |
| 463 | // -----Frame 1---- |
| 464 | // #65532(media) #65533(media) #65534(media) #65535(FEC) #0(FEC). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 465 | this->media_packets_ = |
| 466 | this->media_packet_generator_.ConstructMediaPackets(3, 65532); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 467 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 468 | EXPECT_EQ( |
| 469 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 470 | kNumImportantPackets, kUseUnequalProtection, |
| 471 | kFecMaskBursty, &this->generated_fec_packets_)); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 472 | |
| 473 | // Expect 2 FEC packets. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 474 | EXPECT_EQ(2u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 475 | |
| 476 | // Lose the last two media packets (seq# 65533, 65534). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 477 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 478 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 479 | this->media_loss_mask_[1] = 1; |
| 480 | this->media_loss_mask_[2] = 1; |
| 481 | this->ReceivedPackets(this->media_packets_, this->media_loss_mask_, false); |
| 482 | this->ReceivedPackets(this->generated_fec_packets_, this->fec_loss_mask_, |
| 483 | true); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 484 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 485 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 486 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 487 | } |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 488 | |
| 489 | // The two FEC packets are received and should allow for complete recovery, |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 490 | // but because of the wrap the first FEC packet will be discarded, and only |
| 491 | // one media packet is recoverable. So expect 2 media packets on recovered |
| 492 | // list and no complete recovery. |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 493 | EXPECT_EQ(3u, this->recovered_packets_.size()); |
| 494 | EXPECT_EQ(this->recovered_packets_.size(), this->media_packets_.size()); |
| 495 | EXPECT_TRUE(this->IsRecoveryComplete()); |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | // TODO(brandtr): This test mimics the one above, ensuring that the recovery |
| 499 | // strategy of FlexFEC matches the recovery strategy of ULPFEC. Since FlexFEC |
| 500 | // does not share the sequence number space with the media, however, having a |
| 501 | // matching recovery strategy may be suboptimal. Study this further. |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 502 | // TODO(nisse): In this test, recovery based on the first FEC packet fails with |
| 503 | // the log message "The recovered packet had a length larger than a typical IP |
| 504 | // packet, and is thus dropped." This is probably not intended, and needs |
| 505 | // investigation. |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 506 | using RtpFecTestFlexfecOnly = RtpFecTest<FlexfecForwardErrorCorrection>; |
| 507 | TEST_F(RtpFecTestFlexfecOnly, FecRecoveryWithSeqNumGapOneFrameNoRecovery) { |
| 508 | constexpr int kNumImportantPackets = 0; |
| 509 | constexpr bool kUseUnequalProtection = false; |
| 510 | constexpr uint8_t kProtectionFactor = 200; |
| 511 | |
| 512 | // 1 frame: 3 media packets and 2 FEC packets. |
| 513 | // Sequence number wrap in FEC packets. |
| 514 | // -----Frame 1---- |
| 515 | // #65532(media) #65533(media) #65534(media) #65535(FEC) #0(FEC). |
| 516 | this->media_packets_ = |
| 517 | this->media_packet_generator_.ConstructMediaPackets(3, 65532); |
| 518 | |
| 519 | EXPECT_EQ( |
| 520 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 521 | kNumImportantPackets, kUseUnequalProtection, |
| 522 | kFecMaskBursty, &this->generated_fec_packets_)); |
| 523 | |
| 524 | // Expect 2 FEC packets. |
| 525 | EXPECT_EQ(2u, this->generated_fec_packets_.size()); |
| 526 | |
| 527 | // Overwrite the sequence numbers generated by ConstructMediaPackets, |
| 528 | // to make sure that we do have a wrap. |
| 529 | auto it = this->generated_fec_packets_.begin(); |
Danil Chapovalov | e15dc58 | 2021-01-07 15:24:05 +0100 | [diff] [blame] | 530 | ByteWriter<uint16_t>::WriteBigEndian(&(*it)->data.MutableData()[2], 65535); |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 531 | ++it; |
Danil Chapovalov | e15dc58 | 2021-01-07 15:24:05 +0100 | [diff] [blame] | 532 | ByteWriter<uint16_t>::WriteBigEndian(&(*it)->data.MutableData()[2], 0); |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 533 | |
| 534 | // Lose the last two media packets (seq# 65533, 65534). |
| 535 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 536 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 537 | this->media_loss_mask_[1] = 1; |
| 538 | this->media_loss_mask_[2] = 1; |
| 539 | this->ReceivedPackets(this->media_packets_, this->media_loss_mask_, false); |
| 540 | this->ReceivedPackets(this->generated_fec_packets_, this->fec_loss_mask_, |
| 541 | true); |
| 542 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 543 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 544 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 545 | } |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 546 | |
| 547 | // The two FEC packets are received and should allow for complete recovery, |
| 548 | // but because of the wrap the first FEC packet will be discarded, and only |
| 549 | // one media packet is recoverable. So expect 2 media packets on recovered |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 550 | // list and no complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 551 | EXPECT_EQ(2u, this->recovered_packets_.size()); |
| 552 | EXPECT_TRUE(this->recovered_packets_.size() != this->media_packets_.size()); |
| 553 | EXPECT_FALSE(this->IsRecoveryComplete()); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 554 | } |
| 555 | |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 556 | // Verify we can still recover frame if media packets are reordered. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 557 | TYPED_TEST(RtpFecTest, FecRecoveryWithMediaOutOfOrder) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 558 | constexpr int kNumImportantPackets = 0; |
| 559 | constexpr bool kUseUnequalProtection = false; |
| 560 | constexpr uint8_t kProtectionFactor = 20; |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 561 | |
| 562 | // One frame: 3 media packets, 1 FEC packet. |
| 563 | // -----Frame 1---- |
| 564 | // #0(media) #1(media) #2(media) #3(FEC). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 565 | this->media_packets_ = |
| 566 | this->media_packet_generator_.ConstructMediaPackets(3, 0); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 567 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 568 | EXPECT_EQ( |
| 569 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 570 | kNumImportantPackets, kUseUnequalProtection, |
| 571 | kFecMaskBursty, &this->generated_fec_packets_)); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 572 | |
| 573 | // Expect 1 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 574 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 575 | |
| 576 | // Lose one media packet (seq# 1). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 577 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 578 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 579 | this->media_loss_mask_[1] = 1; |
| 580 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 581 | |
| 582 | // Reorder received media packets. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 583 | auto it0 = this->received_packets_.begin(); |
brandtr | d726a3f | 2017-06-29 02:45:35 -0700 | [diff] [blame] | 584 | auto it1 = this->received_packets_.begin(); |
| 585 | it1++; |
| 586 | std::swap(*it0, *it1); |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 587 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 588 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 589 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 590 | } |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 591 | |
| 592 | // Expect 3 media packets in recovered list, and complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 593 | EXPECT_EQ(3u, this->recovered_packets_.size()); |
| 594 | EXPECT_TRUE(this->IsRecoveryComplete()); |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | // Verify we can still recover frame if FEC is received before media packets. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 598 | TYPED_TEST(RtpFecTest, FecRecoveryWithFecOutOfOrder) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 599 | constexpr int kNumImportantPackets = 0; |
| 600 | constexpr bool kUseUnequalProtection = false; |
| 601 | constexpr uint8_t kProtectionFactor = 20; |
| 602 | |
| 603 | // One frame: 3 media packets, 1 FEC packet. |
| 604 | // -----Frame 1---- |
| 605 | // #0(media) #1(media) #2(media) #3(FEC). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 606 | this->media_packets_ = |
| 607 | this->media_packet_generator_.ConstructMediaPackets(3, 0); |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 608 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 609 | EXPECT_EQ( |
| 610 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 611 | kNumImportantPackets, kUseUnequalProtection, |
| 612 | kFecMaskBursty, &this->generated_fec_packets_)); |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 613 | |
| 614 | // Expect 1 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 615 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 616 | |
| 617 | // Lose one media packet (seq# 1). |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 618 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 619 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 620 | this->media_loss_mask_[1] = 1; |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 621 | // Add FEC packet to received list before the media packets. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 622 | this->ReceivedPackets(this->generated_fec_packets_, this->fec_loss_mask_, |
| 623 | true); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 624 | // Add media packets to received list. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 625 | this->ReceivedPackets(this->media_packets_, this->media_loss_mask_, false); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 626 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 627 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 628 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 629 | } |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 630 | |
| 631 | // Expect 3 media packets in recovered list, and complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 632 | EXPECT_EQ(3u, this->recovered_packets_.size()); |
| 633 | EXPECT_TRUE(this->IsRecoveryComplete()); |
marpan@webrtc.org | c836453 | 2014-07-03 16:49:30 +0000 | [diff] [blame] | 634 | } |
| 635 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 636 | // Test 50% protection with random mask type: Two cases are considered: |
| 637 | // a 50% non-consecutive loss which can be fully recovered, and a 50% |
| 638 | // consecutive loss which cannot be fully recovered. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 639 | TYPED_TEST(RtpFecTest, FecRecoveryWithLoss50percRandomMask) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 640 | constexpr int kNumImportantPackets = 0; |
| 641 | constexpr bool kUseUnequalProtection = false; |
| 642 | constexpr int kNumMediaPackets = 4; |
| 643 | constexpr uint8_t kProtectionFactor = 255; |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 644 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 645 | // Packet Mask for (4,4,0) code, from random mask table. |
| 646 | // (kNumMediaPackets = 4; num_fec_packets = 4, kNumImportantPackets = 0) |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 647 | |
| 648 | // media#0 media#1 media#2 media#3 |
| 649 | // fec#0: 1 1 0 0 |
| 650 | // fec#1: 1 0 1 0 |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 651 | // fec#2: 0 0 1 1 |
| 652 | // fec#3: 0 1 0 1 |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 653 | // |
| 654 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 655 | this->media_packets_ = |
| 656 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 657 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 658 | EXPECT_EQ( |
| 659 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 660 | kNumImportantPackets, kUseUnequalProtection, |
| 661 | kFecMaskRandom, &this->generated_fec_packets_)); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 662 | |
| 663 | // Expect 4 FEC packets. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 664 | EXPECT_EQ(4u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 665 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 666 | // 4 packets lost: 3 media packets (0, 2, 3), and one FEC packet (0) lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 667 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 668 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 669 | this->fec_loss_mask_[0] = 1; |
| 670 | this->media_loss_mask_[0] = 1; |
| 671 | this->media_loss_mask_[2] = 1; |
| 672 | this->media_loss_mask_[3] = 1; |
| 673 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 674 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 675 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 676 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 677 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 678 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 679 | // With media packet#1 and FEC packets #1, #2, #3, expect complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 680 | EXPECT_TRUE(this->IsRecoveryComplete()); |
| 681 | this->recovered_packets_.clear(); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 682 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 683 | // 4 consecutive packets lost: media packets 0, 1, 2, 3. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 684 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 685 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 686 | this->media_loss_mask_[0] = 1; |
| 687 | this->media_loss_mask_[1] = 1; |
| 688 | this->media_loss_mask_[2] = 1; |
| 689 | this->media_loss_mask_[3] = 1; |
| 690 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 691 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 692 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 693 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 694 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 695 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 696 | // Cannot get complete recovery for this loss configuration with random mask. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 697 | EXPECT_FALSE(this->IsRecoveryComplete()); |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 698 | } |
| 699 | |
| 700 | // Test 50% protection with bursty type: Three cases are considered: |
| 701 | // two 50% consecutive losses which can be fully recovered, and one |
| 702 | // non-consecutive which cannot be fully recovered. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 703 | TYPED_TEST(RtpFecTest, FecRecoveryWithLoss50percBurstyMask) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 704 | constexpr int kNumImportantPackets = 0; |
| 705 | constexpr bool kUseUnequalProtection = false; |
| 706 | constexpr int kNumMediaPackets = 4; |
| 707 | constexpr uint8_t kProtectionFactor = 255; |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 708 | |
| 709 | // Packet Mask for (4,4,0) code, from bursty mask table. |
| 710 | // (kNumMediaPackets = 4; num_fec_packets = 4, kNumImportantPackets = 0) |
| 711 | |
| 712 | // media#0 media#1 media#2 media#3 |
| 713 | // fec#0: 1 0 0 0 |
| 714 | // fec#1: 1 1 0 0 |
| 715 | // fec#2: 0 1 1 0 |
| 716 | // fec#3: 0 0 1 1 |
| 717 | // |
| 718 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 719 | this->media_packets_ = |
| 720 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 721 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 722 | EXPECT_EQ( |
| 723 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 724 | kNumImportantPackets, kUseUnequalProtection, |
| 725 | kFecMaskBursty, &this->generated_fec_packets_)); |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 726 | |
| 727 | // Expect 4 FEC packets. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 728 | EXPECT_EQ(4u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 729 | |
| 730 | // 4 consecutive packets lost: media packets 0,1,2,3. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 731 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 732 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 733 | this->media_loss_mask_[0] = 1; |
| 734 | this->media_loss_mask_[1] = 1; |
| 735 | this->media_loss_mask_[2] = 1; |
| 736 | this->media_loss_mask_[3] = 1; |
| 737 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 738 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 739 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 740 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 741 | } |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 742 | |
| 743 | // Expect complete recovery for consecutive packet loss <= 50%. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 744 | EXPECT_TRUE(this->IsRecoveryComplete()); |
| 745 | this->recovered_packets_.clear(); |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 746 | |
| 747 | // 4 consecutive packets lost: media packets 1,2, 3, and FEC packet 0. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 748 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 749 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 750 | this->fec_loss_mask_[0] = 1; |
| 751 | this->media_loss_mask_[1] = 1; |
| 752 | this->media_loss_mask_[2] = 1; |
| 753 | this->media_loss_mask_[3] = 1; |
| 754 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 755 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 756 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 757 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 758 | } |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 759 | |
| 760 | // Expect complete recovery for consecutive packet loss <= 50%. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 761 | EXPECT_TRUE(this->IsRecoveryComplete()); |
| 762 | this->recovered_packets_.clear(); |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 763 | |
| 764 | // 4 packets lost (non-consecutive loss): media packets 0, 3, and FEC# 0, 3. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 765 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 766 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 767 | this->fec_loss_mask_[0] = 1; |
| 768 | this->fec_loss_mask_[3] = 1; |
| 769 | this->media_loss_mask_[0] = 1; |
| 770 | this->media_loss_mask_[3] = 1; |
| 771 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 772 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 773 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 774 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 775 | } |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 776 | |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 777 | // Cannot get complete recovery for this loss configuration. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 778 | EXPECT_FALSE(this->IsRecoveryComplete()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 779 | } |
| 780 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 781 | TYPED_TEST(RtpFecTest, FecRecoveryNoLossUep) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 782 | constexpr int kNumImportantPackets = 2; |
| 783 | constexpr bool kUseUnequalProtection = true; |
| 784 | constexpr int kNumMediaPackets = 4; |
| 785 | constexpr uint8_t kProtectionFactor = 60; |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 786 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 787 | this->media_packets_ = |
| 788 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 789 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 790 | EXPECT_EQ( |
| 791 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 792 | kNumImportantPackets, kUseUnequalProtection, |
| 793 | kFecMaskBursty, &this->generated_fec_packets_)); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 794 | |
| 795 | // Expect 1 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 796 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 797 | |
| 798 | // No packets lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 799 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 800 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 801 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 802 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 803 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 804 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 805 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 806 | |
| 807 | // No packets lost, expect complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 808 | EXPECT_TRUE(this->IsRecoveryComplete()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 809 | } |
| 810 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 811 | TYPED_TEST(RtpFecTest, FecRecoveryWithLossUep) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 812 | constexpr int kNumImportantPackets = 2; |
| 813 | constexpr bool kUseUnequalProtection = true; |
| 814 | constexpr int kNumMediaPackets = 4; |
| 815 | constexpr uint8_t kProtectionFactor = 60; |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 816 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 817 | this->media_packets_ = |
| 818 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 819 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 820 | EXPECT_EQ( |
| 821 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 822 | kNumImportantPackets, kUseUnequalProtection, |
| 823 | kFecMaskBursty, &this->generated_fec_packets_)); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 824 | |
| 825 | // Expect 1 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 826 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 827 | |
| 828 | // 1 media packet lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 829 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 830 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 831 | this->media_loss_mask_[3] = 1; |
| 832 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 833 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 834 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 835 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 836 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 837 | |
| 838 | // One packet lost, one FEC packet, expect complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 839 | EXPECT_TRUE(this->IsRecoveryComplete()); |
| 840 | this->recovered_packets_.clear(); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 841 | |
| 842 | // 2 media packets lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 843 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 844 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 845 | this->media_loss_mask_[1] = 1; |
| 846 | this->media_loss_mask_[3] = 1; |
| 847 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 848 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 849 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 850 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 851 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 852 | |
| 853 | // 2 packets lost, one FEC packet, cannot get complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 854 | EXPECT_FALSE(this->IsRecoveryComplete()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 855 | } |
| 856 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 857 | // Test 50% protection with random mask type for UEP on. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 858 | TYPED_TEST(RtpFecTest, FecRecoveryWithLoss50percUepRandomMask) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 859 | constexpr int kNumImportantPackets = 1; |
| 860 | constexpr bool kUseUnequalProtection = true; |
| 861 | constexpr int kNumMediaPackets = 4; |
| 862 | constexpr uint8_t kProtectionFactor = 255; |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 863 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 864 | // Packet Mask for (4,4,1) code, from random mask table. |
| 865 | // (kNumMediaPackets = 4; num_fec_packets = 4, kNumImportantPackets = 1) |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 866 | |
| 867 | // media#0 media#1 media#2 media#3 |
| 868 | // fec#0: 1 0 0 0 |
| 869 | // fec#1: 1 1 0 0 |
| 870 | // fec#2: 1 0 1 1 |
| 871 | // fec#3: 0 1 1 0 |
| 872 | // |
| 873 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 874 | this->media_packets_ = |
| 875 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 876 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 877 | EXPECT_EQ( |
| 878 | 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, |
| 879 | kNumImportantPackets, kUseUnequalProtection, |
| 880 | kFecMaskRandom, &this->generated_fec_packets_)); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 881 | |
| 882 | // Expect 4 FEC packets. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 883 | EXPECT_EQ(4u, this->generated_fec_packets_.size()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 884 | |
| 885 | // 4 packets lost: 3 media packets and FEC packet#1 lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 886 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 887 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 888 | this->fec_loss_mask_[1] = 1; |
| 889 | this->media_loss_mask_[0] = 1; |
| 890 | this->media_loss_mask_[2] = 1; |
| 891 | this->media_loss_mask_[3] = 1; |
| 892 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 893 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 894 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 895 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 896 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 897 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 898 | // With media packet#3 and FEC packets #0, #1, #3, expect complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 899 | EXPECT_TRUE(this->IsRecoveryComplete()); |
| 900 | this->recovered_packets_.clear(); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 901 | |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 902 | // 5 packets lost: 4 media packets and one FEC packet#2 lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 903 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 904 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 905 | this->fec_loss_mask_[2] = 1; |
| 906 | this->media_loss_mask_[0] = 1; |
| 907 | this->media_loss_mask_[1] = 1; |
| 908 | this->media_loss_mask_[2] = 1; |
| 909 | this->media_loss_mask_[3] = 1; |
| 910 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 911 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 912 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 913 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 914 | } |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 915 | |
| 916 | // Cannot get complete recovery for this loss configuration. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 917 | EXPECT_FALSE(this->IsRecoveryComplete()); |
marpan@webrtc.org | b783a55 | 2012-02-04 02:46:35 +0000 | [diff] [blame] | 918 | } |
| 919 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 920 | TYPED_TEST(RtpFecTest, FecRecoveryNonConsecutivePackets) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 921 | constexpr int kNumImportantPackets = 0; |
| 922 | constexpr bool kUseUnequalProtection = false; |
| 923 | constexpr int kNumMediaPackets = 5; |
| 924 | constexpr uint8_t kProtectionFactor = 60; |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 925 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 926 | this->media_packets_ = |
| 927 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 928 | |
| 929 | // Create a new temporary packet list for generating FEC packets. |
| 930 | // This list should have every other packet removed. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 931 | ForwardErrorCorrection::PacketList protected_media_packets; |
| 932 | DeepCopyEveryNthPacket(this->media_packets_, 2, &protected_media_packets); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 933 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 934 | EXPECT_EQ( |
| 935 | 0, this->fec_.EncodeFec(protected_media_packets, kProtectionFactor, |
| 936 | kNumImportantPackets, kUseUnequalProtection, |
| 937 | kFecMaskBursty, &this->generated_fec_packets_)); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 938 | |
| 939 | // Expect 1 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 940 | EXPECT_EQ(1u, this->generated_fec_packets_.size()); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 941 | |
| 942 | // 1 protected media packet lost |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 943 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 944 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 945 | this->media_loss_mask_[2] = 1; |
| 946 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 947 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 948 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 949 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 950 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 951 | |
| 952 | // One packet lost, one FEC packet, expect complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 953 | EXPECT_TRUE(this->IsRecoveryComplete()); |
| 954 | this->recovered_packets_.clear(); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 955 | |
| 956 | // Unprotected packet lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 957 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 958 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 959 | this->media_loss_mask_[1] = 1; |
| 960 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 961 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 962 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 963 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 964 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 965 | |
| 966 | // Unprotected packet lost. Recovery not possible. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 967 | EXPECT_FALSE(this->IsRecoveryComplete()); |
| 968 | this->recovered_packets_.clear(); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 969 | |
| 970 | // 2 media packets lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 971 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 972 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 973 | this->media_loss_mask_[0] = 1; |
| 974 | this->media_loss_mask_[2] = 1; |
| 975 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 976 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 977 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 978 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 979 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 980 | |
| 981 | // 2 protected packets lost, one FEC packet, cannot get complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 982 | EXPECT_FALSE(this->IsRecoveryComplete()); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 983 | } |
| 984 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 985 | TYPED_TEST(RtpFecTest, FecRecoveryNonConsecutivePacketsExtension) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 986 | constexpr int kNumImportantPackets = 0; |
| 987 | constexpr bool kUseUnequalProtection = false; |
| 988 | constexpr int kNumMediaPackets = 21; |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 989 | uint8_t kProtectionFactor = 127; |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 990 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 991 | this->media_packets_ = |
| 992 | this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 993 | |
| 994 | // Create a new temporary packet list for generating FEC packets. |
| 995 | // This list should have every other packet removed. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 996 | ForwardErrorCorrection::PacketList protected_media_packets; |
| 997 | DeepCopyEveryNthPacket(this->media_packets_, 2, &protected_media_packets); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 998 | |
| 999 | // Zero column insertion will have to extend the size of the packet |
| 1000 | // mask since the number of actual packets are 21, while the number |
| 1001 | // of protected packets are 11. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1002 | EXPECT_EQ( |
| 1003 | 0, this->fec_.EncodeFec(protected_media_packets, kProtectionFactor, |
| 1004 | kNumImportantPackets, kUseUnequalProtection, |
| 1005 | kFecMaskBursty, &this->generated_fec_packets_)); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1006 | |
| 1007 | // Expect 5 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1008 | EXPECT_EQ(5u, this->generated_fec_packets_.size()); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1009 | |
| 1010 | // Last protected media packet lost |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1011 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 1012 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 1013 | this->media_loss_mask_[kNumMediaPackets - 1] = 1; |
| 1014 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1015 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1016 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 1017 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1018 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1019 | |
| 1020 | // One packet lost, one FEC packet, expect complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1021 | EXPECT_TRUE(this->IsRecoveryComplete()); |
| 1022 | this->recovered_packets_.clear(); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1023 | |
| 1024 | // Last unprotected packet lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1025 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 1026 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 1027 | this->media_loss_mask_[kNumMediaPackets - 2] = 1; |
| 1028 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1029 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1030 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 1031 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1032 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1033 | |
| 1034 | // Unprotected packet lost. Recovery not possible. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1035 | EXPECT_FALSE(this->IsRecoveryComplete()); |
| 1036 | this->recovered_packets_.clear(); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1037 | |
| 1038 | // 6 media packets lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1039 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 1040 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 1041 | this->media_loss_mask_[kNumMediaPackets - 11] = 1; |
| 1042 | this->media_loss_mask_[kNumMediaPackets - 9] = 1; |
| 1043 | this->media_loss_mask_[kNumMediaPackets - 7] = 1; |
| 1044 | this->media_loss_mask_[kNumMediaPackets - 5] = 1; |
| 1045 | this->media_loss_mask_[kNumMediaPackets - 3] = 1; |
| 1046 | this->media_loss_mask_[kNumMediaPackets - 1] = 1; |
| 1047 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1048 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1049 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 1050 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1051 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1052 | |
| 1053 | // 5 protected packets lost, one FEC packet, cannot get complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1054 | EXPECT_FALSE(this->IsRecoveryComplete()); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1055 | } |
| 1056 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1057 | TYPED_TEST(RtpFecTest, FecRecoveryNonConsecutivePacketsWrap) { |
brandtr | d90fa0b | 2016-08-09 06:57:14 -0700 | [diff] [blame] | 1058 | constexpr int kNumImportantPackets = 0; |
| 1059 | constexpr bool kUseUnequalProtection = false; |
| 1060 | constexpr int kNumMediaPackets = 21; |
marpan@webrtc.org | 8866bb1 | 2012-06-05 16:42:20 +0000 | [diff] [blame] | 1061 | uint8_t kProtectionFactor = 127; |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1062 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1063 | this->media_packets_ = this->media_packet_generator_.ConstructMediaPackets( |
| 1064 | kNumMediaPackets, 0xFFFF - 5); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1065 | |
| 1066 | // Create a new temporary packet list for generating FEC packets. |
| 1067 | // This list should have every other packet removed. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1068 | ForwardErrorCorrection::PacketList protected_media_packets; |
| 1069 | DeepCopyEveryNthPacket(this->media_packets_, 2, &protected_media_packets); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1070 | |
| 1071 | // Zero column insertion will have to extend the size of the packet |
| 1072 | // mask since the number of actual packets are 21, while the number |
| 1073 | // of protected packets are 11. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1074 | EXPECT_EQ( |
| 1075 | 0, this->fec_.EncodeFec(protected_media_packets, kProtectionFactor, |
| 1076 | kNumImportantPackets, kUseUnequalProtection, |
| 1077 | kFecMaskBursty, &this->generated_fec_packets_)); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1078 | |
| 1079 | // Expect 5 FEC packet. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1080 | EXPECT_EQ(5u, this->generated_fec_packets_.size()); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1081 | |
| 1082 | // Last protected media packet lost |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1083 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 1084 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 1085 | this->media_loss_mask_[kNumMediaPackets - 1] = 1; |
| 1086 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1087 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1088 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 1089 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1090 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1091 | |
| 1092 | // One packet lost, one FEC packet, expect complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1093 | EXPECT_TRUE(this->IsRecoveryComplete()); |
| 1094 | this->recovered_packets_.clear(); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1095 | |
| 1096 | // Last unprotected packet lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1097 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 1098 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 1099 | this->media_loss_mask_[kNumMediaPackets - 2] = 1; |
| 1100 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1101 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1102 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 1103 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1104 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1105 | |
| 1106 | // Unprotected packet lost. Recovery not possible. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1107 | EXPECT_FALSE(this->IsRecoveryComplete()); |
| 1108 | this->recovered_packets_.clear(); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1109 | |
| 1110 | // 6 media packets lost. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1111 | memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); |
| 1112 | memset(this->fec_loss_mask_, 0, sizeof(this->fec_loss_mask_)); |
| 1113 | this->media_loss_mask_[kNumMediaPackets - 11] = 1; |
| 1114 | this->media_loss_mask_[kNumMediaPackets - 9] = 1; |
| 1115 | this->media_loss_mask_[kNumMediaPackets - 7] = 1; |
| 1116 | this->media_loss_mask_[kNumMediaPackets - 5] = 1; |
| 1117 | this->media_loss_mask_[kNumMediaPackets - 3] = 1; |
| 1118 | this->media_loss_mask_[kNumMediaPackets - 1] = 1; |
| 1119 | this->NetworkReceivedPackets(this->media_loss_mask_, this->fec_loss_mask_); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1120 | |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1121 | for (const auto& received_packet : this->received_packets_) { |
Yves Gerey | 665174f | 2018-06-19 15:03:05 +0200 | [diff] [blame] | 1122 | this->fec_.DecodeFec(*received_packet, &this->recovered_packets_); |
nisse | a5f043f | 2017-09-18 07:58:59 -0700 | [diff] [blame] | 1123 | } |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1124 | |
| 1125 | // 5 protected packets lost, one FEC packet, cannot get complete recovery. |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1126 | EXPECT_FALSE(this->IsRecoveryComplete()); |
stefan@webrtc.org | c35f5ce | 2012-04-11 07:42:25 +0000 | [diff] [blame] | 1127 | } |
| 1128 | |
brandtr | ece4aba | 2016-09-20 23:16:28 -0700 | [diff] [blame] | 1129 | } // namespace webrtc |