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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:13:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:13:27 +0000 |
commit | 40a355a42d4a9444dc753c04c6608dade2f06a23 (patch) | |
tree | 871fc667d2de662f171103ce5ec067014ef85e61 /third_party/libwebrtc/modules/rtp_rtcp/source/rtp_packetizer_h265_unittest.cc | |
parent | Adding upstream version 124.0.1. (diff) | |
download | firefox-40a355a42d4a9444dc753c04c6608dade2f06a23.tar.xz firefox-40a355a42d4a9444dc753c04c6608dade2f06a23.zip |
Adding upstream version 125.0.1.upstream/125.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/modules/rtp_rtcp/source/rtp_packetizer_h265_unittest.cc')
-rw-r--r-- | third_party/libwebrtc/modules/rtp_rtcp/source/rtp_packetizer_h265_unittest.cc | 525 |
1 files changed, 525 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/rtp_rtcp/source/rtp_packetizer_h265_unittest.cc b/third_party/libwebrtc/modules/rtp_rtcp/source/rtp_packetizer_h265_unittest.cc new file mode 100644 index 0000000000..cb1de334c0 --- /dev/null +++ b/third_party/libwebrtc/modules/rtp_rtcp/source/rtp_packetizer_h265_unittest.cc @@ -0,0 +1,525 @@ +/* + * Copyright (c) 2023 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "modules/rtp_rtcp/source/rtp_packetizer_h265.h" + +#include <vector> + +#include "common_video/h265/h265_common.h" +#include "modules/rtp_rtcp/mocks/mock_rtp_rtcp.h" +#include "modules/rtp_rtcp/source/byte_io.h" +#include "test/gmock.h" +#include "test/gtest.h" + +namespace webrtc { +namespace { + +using ::testing::Each; +using ::testing::ElementsAre; +using ::testing::ElementsAreArray; +using ::testing::Eq; +using ::testing::IsEmpty; +using ::testing::SizeIs; + +constexpr RtpPacketToSend::ExtensionManager* kNoExtensions = nullptr; +constexpr size_t kMaxPayloadSize = 1200; +constexpr size_t kLengthFieldLength = 2; +constexpr RtpPacketizer::PayloadSizeLimits kNoLimits; + +constexpr size_t kNalHeaderSize = 2; +constexpr size_t kFuHeaderSize = 3; + +constexpr uint8_t kNaluTypeMask = 0x7E; + +// Bit masks for FU headers. +constexpr uint8_t kH265SBit = 0x80; +constexpr uint8_t kH265EBit = 0x40; + +// Creates Buffer that looks like nal unit of given size. +rtc::Buffer GenerateNalUnit(size_t size) { + RTC_CHECK_GT(size, 0); + rtc::Buffer buffer(size); + // Set some valid header with type TRAIL_R and temporal id + buffer[0] = 2; + buffer[1] = 2; + for (size_t i = 2; i < size; ++i) { + buffer[i] = static_cast<uint8_t>(i); + } + // Last byte shouldn't be 0, or it may be counted as part of next 4-byte start + // sequence. + buffer[size - 1] |= 0x10; + return buffer; +} + +// Create frame consisting of nalus of given size. +rtc::Buffer CreateFrame(std::initializer_list<size_t> nalu_sizes) { + static constexpr int kStartCodeSize = 3; + rtc::Buffer frame(absl::c_accumulate(nalu_sizes, size_t{0}) + + kStartCodeSize * nalu_sizes.size()); + size_t offset = 0; + for (size_t nalu_size : nalu_sizes) { + EXPECT_GE(nalu_size, 1u); + // Insert nalu start code + frame[offset] = 0; + frame[offset + 1] = 0; + frame[offset + 2] = 1; + // Set some valid header. + frame[offset + 3] = 2; + // Fill payload avoiding accidental start codes + if (nalu_size > 1) { + memset(frame.data() + offset + 4, 0x3f, nalu_size - 1); + } + offset += (kStartCodeSize + nalu_size); + } + return frame; +} + +// Create frame consisting of given nalus. +rtc::Buffer CreateFrame(rtc::ArrayView<const rtc::Buffer> nalus) { + static constexpr int kStartCodeSize = 3; + int frame_size = 0; + for (const rtc::Buffer& nalu : nalus) { + frame_size += (kStartCodeSize + nalu.size()); + } + rtc::Buffer frame(frame_size); + size_t offset = 0; + for (const rtc::Buffer& nalu : nalus) { + // Insert nalu start code + frame[offset] = 0; + frame[offset + 1] = 0; + frame[offset + 2] = 1; + // Copy the nalu unit. + memcpy(frame.data() + offset + 3, nalu.data(), nalu.size()); + offset += (kStartCodeSize + nalu.size()); + } + return frame; +} + +std::vector<RtpPacketToSend> FetchAllPackets(RtpPacketizerH265* packetizer) { + std::vector<RtpPacketToSend> result; + size_t num_packets = packetizer->NumPackets(); + result.reserve(num_packets); + RtpPacketToSend packet(kNoExtensions); + while (packetizer->NextPacket(&packet)) { + result.push_back(packet); + } + EXPECT_THAT(result, SizeIs(num_packets)); + return result; +} + +// Single nalu tests. +TEST(RtpPacketizerH265Test, SingleNalu) { + const uint8_t frame[] = {0, 0, 1, H265::kIdrWRadl, 0xFF}; + + RtpPacketizerH265 packetizer(frame, kNoLimits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + ASSERT_THAT(packets, SizeIs(1)); + EXPECT_THAT(packets[0].payload(), ElementsAre(H265::kIdrWRadl, 0xFF)); +} + +TEST(RtpPacketizerH265Test, SingleNaluTwoPackets) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = kMaxPayloadSize; + rtc::Buffer nalus[] = {GenerateNalUnit(kMaxPayloadSize), + GenerateNalUnit(100)}; + rtc::Buffer frame = CreateFrame(nalus); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + ASSERT_THAT(packets, SizeIs(2)); + EXPECT_THAT(packets[0].payload(), ElementsAreArray(nalus[0])); + EXPECT_THAT(packets[1].payload(), ElementsAreArray(nalus[1])); +} + +TEST(RtpPacketizerH265Test, + SingleNaluFirstPacketReductionAppliesOnlyToFirstFragment) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 200; + limits.first_packet_reduction_len = 5; + rtc::Buffer nalus[] = {GenerateNalUnit(/*size=*/195), + GenerateNalUnit(/*size=*/200), + GenerateNalUnit(/*size=*/200)}; + rtc::Buffer frame = CreateFrame(nalus); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + ASSERT_THAT(packets, SizeIs(3)); + EXPECT_THAT(packets[0].payload(), ElementsAreArray(nalus[0])); + EXPECT_THAT(packets[1].payload(), ElementsAreArray(nalus[1])); + EXPECT_THAT(packets[2].payload(), ElementsAreArray(nalus[2])); +} + +TEST(RtpPacketizerH265Test, + SingleNaluLastPacketReductionAppliesOnlyToLastFragment) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 200; + limits.last_packet_reduction_len = 5; + rtc::Buffer nalus[] = {GenerateNalUnit(/*size=*/200), + GenerateNalUnit(/*size=*/200), + GenerateNalUnit(/*size=*/195)}; + rtc::Buffer frame = CreateFrame(nalus); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + ASSERT_THAT(packets, SizeIs(3)); + EXPECT_THAT(packets[0].payload(), ElementsAreArray(nalus[0])); + EXPECT_THAT(packets[1].payload(), ElementsAreArray(nalus[1])); + EXPECT_THAT(packets[2].payload(), ElementsAreArray(nalus[2])); +} + +TEST(RtpPacketizerH265Test, + SingleNaluFirstAndLastPacketReductionSumsForSinglePacket) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 200; + limits.first_packet_reduction_len = 20; + limits.last_packet_reduction_len = 30; + rtc::Buffer frame = CreateFrame({150}); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + EXPECT_THAT(packets, SizeIs(1)); +} + +// Aggregation tests. +TEST(RtpPacketizerH265Test, ApRespectsNoPacketReduction) { + rtc::Buffer nalus[] = {GenerateNalUnit(/*size=*/2), + GenerateNalUnit(/*size=*/2), + GenerateNalUnit(/*size=*/0x123)}; + rtc::Buffer frame = CreateFrame(nalus); + + RtpPacketizerH265 packetizer(frame, kNoLimits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + ASSERT_THAT(packets, SizeIs(1)); + auto payload = packets[0].payload(); + int type = H265::ParseNaluType(payload[0]); + EXPECT_EQ(payload.size(), + kNalHeaderSize + 3 * kLengthFieldLength + 2 + 2 + 0x123); + + EXPECT_EQ(type, H265::NaluType::kAp); + payload = payload.subview(kNalHeaderSize); + // 1st fragment. + EXPECT_THAT(payload.subview(0, kLengthFieldLength), + ElementsAre(0, 2)); // Size. + EXPECT_THAT(payload.subview(kLengthFieldLength, 2), + ElementsAreArray(nalus[0])); + payload = payload.subview(kLengthFieldLength + 2); + // 2nd fragment. + EXPECT_THAT(payload.subview(0, kLengthFieldLength), + ElementsAre(0, 2)); // Size. + EXPECT_THAT(payload.subview(kLengthFieldLength, 2), + ElementsAreArray(nalus[1])); + payload = payload.subview(kLengthFieldLength + 2); + // 3rd fragment. + EXPECT_THAT(payload.subview(0, kLengthFieldLength), + ElementsAre(0x1, 0x23)); // Size. + EXPECT_THAT(payload.subview(kLengthFieldLength), ElementsAreArray(nalus[2])); +} + +TEST(RtpPacketizerH265Test, ApRespectsFirstPacketReduction) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1000; + limits.first_packet_reduction_len = 100; + const size_t kFirstFragmentSize = + limits.max_payload_len - limits.first_packet_reduction_len; + rtc::Buffer nalus[] = {GenerateNalUnit(/*size=*/kFirstFragmentSize), + GenerateNalUnit(/*size=*/2), + GenerateNalUnit(/*size=*/2)}; + rtc::Buffer frame = CreateFrame(nalus); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + ASSERT_THAT(packets, SizeIs(2)); + // Expect 1st packet is single nalu. + EXPECT_THAT(packets[0].payload(), ElementsAreArray(nalus[0])); + // Expect 2nd packet is aggregate of last two fragments. + // The size of H265 nal_unit_header is 2 bytes, according to 7.3.1.2 + // in H265 spec. Aggregation packet type is 48, and nuh_temporal_id_plus1 + // is 2, so the nal_unit_header should be "01100000 00000010", + // which is 96 and 2. + EXPECT_THAT(packets[1].payload(), + ElementsAre(96, 2, // + 0, 2, nalus[1][0], nalus[1][1], // + 0, 2, nalus[2][0], nalus[2][1])); +} + +TEST(RtpPacketizerH265Test, ApRespectsLastPacketReduction) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1000; + limits.last_packet_reduction_len = 100; + const size_t kLastFragmentSize = + limits.max_payload_len - limits.last_packet_reduction_len; + rtc::Buffer nalus[] = {GenerateNalUnit(/*size=*/2), + GenerateNalUnit(/*size=*/2), + GenerateNalUnit(/*size=*/kLastFragmentSize)}; + rtc::Buffer frame = CreateFrame(nalus); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + ASSERT_THAT(packets, SizeIs(2)); + // Expect 1st packet is aggregate of 1st two fragments. + EXPECT_THAT(packets[0].payload(), + ElementsAre(96, 2, // + 0, 2, nalus[0][0], nalus[0][1], // + 0, 2, nalus[1][0], nalus[1][1])); + // Expect 2nd packet is single nalu. + EXPECT_THAT(packets[1].payload(), ElementsAreArray(nalus[2])); +} + +TEST(RtpPacketizerH265Test, TooSmallForApHeaders) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1000; + const size_t kLastFragmentSize = + limits.max_payload_len - 3 * kLengthFieldLength - 4; + rtc::Buffer nalus[] = {GenerateNalUnit(/*size=*/2), + GenerateNalUnit(/*size=*/2), + GenerateNalUnit(/*size=*/kLastFragmentSize)}; + rtc::Buffer frame = CreateFrame(nalus); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + ASSERT_THAT(packets, SizeIs(2)); + // Expect 1st packet is aggregate of 1st two fragments. + EXPECT_THAT(packets[0].payload(), + ElementsAre(96, 2, // + 0, 2, nalus[0][0], nalus[0][1], // + 0, 2, nalus[1][0], nalus[1][1])); + // Expect 2nd packet is single nalu. + EXPECT_THAT(packets[1].payload(), ElementsAreArray(nalus[2])); +} + +TEST(RtpPacketizerH265Test, LastFragmentFitsInSingleButNotLastPacket) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1178; + limits.first_packet_reduction_len = 0; + limits.last_packet_reduction_len = 20; + limits.single_packet_reduction_len = 20; + // Actual sizes, which triggered this bug. + rtc::Buffer frame = CreateFrame({20, 8, 18, 1161}); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + // Last packet has to be of correct size. + // Incorrect implementation might miss this constraint and not split the last + // fragment in two packets. + EXPECT_LE(static_cast<int>(packets.back().payload_size()), + limits.max_payload_len - limits.last_packet_reduction_len); +} + +// Splits frame with payload size `frame_payload_size` without fragmentation, +// Returns sizes of the payloads excluding FU headers. +std::vector<int> TestFu(size_t frame_payload_size, + const RtpPacketizer::PayloadSizeLimits& limits) { + rtc::Buffer nalu[] = {GenerateNalUnit(kNalHeaderSize + frame_payload_size)}; + rtc::Buffer frame = CreateFrame(nalu); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + EXPECT_GE(packets.size(), 2u); // Single packet indicates it is not FU. + std::vector<uint16_t> fu_header; + std::vector<int> payload_sizes; + + for (const RtpPacketToSend& packet : packets) { + auto payload = packet.payload(); + EXPECT_GT(payload.size(), kFuHeaderSize); + // FU header is after the 2-bytes size PayloadHdr according to 4.4.3 in spec + fu_header.push_back(payload[2]); + payload_sizes.push_back(payload.size() - kFuHeaderSize); + } + + EXPECT_TRUE(fu_header.front() & kH265SBit); + EXPECT_TRUE(fu_header.back() & kH265EBit); + // Clear S and E bits before testing all are duplicating same original header. + fu_header.front() &= ~kH265SBit; + fu_header.back() &= ~kH265EBit; + uint8_t nalu_type = (nalu[0][0] & kNaluTypeMask) >> 1; + EXPECT_THAT(fu_header, Each(Eq(nalu_type))); + + return payload_sizes; +} + +// Fragmentation tests. +TEST(RtpPacketizerH265Test, FuOddSize) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1200; + EXPECT_THAT(TestFu(1200, limits), ElementsAre(600, 600)); +} + +TEST(RtpPacketizerH265Test, FuWithFirstPacketReduction) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1200; + limits.first_packet_reduction_len = 4; + limits.single_packet_reduction_len = 4; + EXPECT_THAT(TestFu(1198, limits), ElementsAre(597, 601)); +} + +TEST(RtpPacketizerH265Test, FuWithLastPacketReduction) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1200; + limits.last_packet_reduction_len = 4; + limits.single_packet_reduction_len = 4; + EXPECT_THAT(TestFu(1198, limits), ElementsAre(601, 597)); +} + +TEST(RtpPacketizerH265Test, FuWithSinglePacketReduction) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1199; + limits.single_packet_reduction_len = 200; + EXPECT_THAT(TestFu(1000, limits), ElementsAre(500, 500)); +} + +TEST(RtpPacketizerH265Test, FuEvenSize) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1200; + EXPECT_THAT(TestFu(1201, limits), ElementsAre(600, 601)); +} + +TEST(RtpPacketizerH265Test, FuRounding) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1448; + EXPECT_THAT(TestFu(10123, limits), + ElementsAre(1265, 1265, 1265, 1265, 1265, 1266, 1266, 1266)); +} + +TEST(RtpPacketizerH265Test, FuBig) { + RtpPacketizer::PayloadSizeLimits limits; + limits.max_payload_len = 1200; + // Generate 10 full sized packets, leave room for FU headers. + EXPECT_THAT( + TestFu(10 * (1200 - kFuHeaderSize), limits), + ElementsAre(1197, 1197, 1197, 1197, 1197, 1197, 1197, 1197, 1197, 1197)); +} + +struct PacketInfo { + bool first_fragment = false; + bool last_fragment = false; + bool aggregated = false; + int nalu_index = 0; + int nalu_number = 0; + int payload_size = 0; + int start_offset = 0; +}; + +struct MixedApFuTestParams { + std::vector<int> nalus; + int expect_packetsSize = 0; + std::vector<PacketInfo> expected_packets; +}; + +class RtpPacketizerH265ParametrizedTest + : public ::testing::TestWithParam<MixedApFuTestParams> {}; + +// Fragmentation + aggregation mixed testing. +TEST_P(RtpPacketizerH265ParametrizedTest, MixedApFu) { + RtpPacketizer::PayloadSizeLimits limits; + const MixedApFuTestParams params = GetParam(); + limits.max_payload_len = 100; + std::vector<rtc::Buffer> nalus; + nalus.reserve(params.nalus.size()); + + // Generate nalus according to size specified in paramters + for (size_t index = 0; index < params.nalus.size(); index++) { + nalus.push_back(GenerateNalUnit(params.nalus[index])); + } + rtc::Buffer frame = CreateFrame(nalus); + + RtpPacketizerH265 packetizer(frame, limits); + std::vector<RtpPacketToSend> packets = FetchAllPackets(&packetizer); + + ASSERT_THAT(packets, SizeIs(params.expect_packetsSize)); + for (int i = 0; i < params.expect_packetsSize; i++) { + PacketInfo expected_packet = params.expected_packets[i]; + if (expected_packet.aggregated) { + int type = H265::ParseNaluType(packets[i].payload()[0]); + EXPECT_THAT(type, H265::NaluType::kAp); + auto payload = packets[i].payload().subview(kNalHeaderSize); + int offset = 0; + // Generated AP packet header and payload align + for (int j = expected_packet.nalu_index; j < expected_packet.nalu_number; + j++) { + EXPECT_THAT(payload.subview(0, kLengthFieldLength), + ElementsAre(0, nalus[j].size())); + EXPECT_THAT( + payload.subview(offset + kLengthFieldLength, nalus[j].size()), + ElementsAreArray(nalus[j])); + offset += kLengthFieldLength + nalus[j].size(); + } + } else { + uint8_t fu_header = 0; + fu_header |= (expected_packet.first_fragment ? kH265SBit : 0); + fu_header |= (expected_packet.last_fragment ? kH265EBit : 0); + fu_header |= H265::NaluType::kTrailR; + EXPECT_THAT(packets[i].payload().subview(0, kFuHeaderSize), + ElementsAre(98, 2, fu_header)); + EXPECT_THAT( + packets[i].payload().subview(kFuHeaderSize), + ElementsAreArray(nalus[expected_packet.nalu_index].data() + + kNalHeaderSize + expected_packet.start_offset, + expected_packet.payload_size)); + } + } +} + +INSTANTIATE_TEST_SUITE_P( + RtpPacketizerH265Test, + RtpPacketizerH265ParametrizedTest, + testing::Values( + // FU + AP + FU. + // GenerateNalUnit will include 2 bytes nalu header, for FU packet split + // calculation, this 2-byte nalu header length should be excluded. + MixedApFuTestParams{.nalus = {140, 20, 20, 160}, + .expect_packetsSize = 5, + .expected_packets = {{.first_fragment = true, + .nalu_index = 0, + .payload_size = 69, + .start_offset = 0}, + {.last_fragment = true, + .nalu_index = 0, + .payload_size = 69, + .start_offset = 69}, + {.aggregated = true, + .nalu_index = 1, + .nalu_number = 2}, + {.first_fragment = true, + .nalu_index = 3, + .payload_size = 79, + .start_offset = 0}, + {.last_fragment = true, + .nalu_index = 3, + .payload_size = 79, + .start_offset = 79}}}, + // AP + FU + AP + MixedApFuTestParams{ + .nalus = {20, 20, 160, 30, 30}, + .expect_packetsSize = 4, + .expected_packets = { + {.aggregated = true, .nalu_index = 0, .nalu_number = 2}, + {.first_fragment = true, + .nalu_index = 2, + .payload_size = 79, + .start_offset = 0}, + {.last_fragment = true, + .nalu_index = 2, + .payload_size = 79, + .start_offset = 79}, + {.aggregated = true, .nalu_index = 3, .nalu_number = 2}}})); + +} // namespace +} // namespace webrtc |