blob: 50d1aaae125e1011b3f051b2cbd76e66b6dcc463 [file] [log] [blame]
/*
* Copyright (c) 2021 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 <vector>
#include "api/array_view.h"
#include "api/video/rtp_video_frame_assembler.h"
#include "modules/rtp_rtcp/source/rtp_dependency_descriptor_extension.h"
#include "modules/rtp_rtcp/source/rtp_format.h"
#include "modules/rtp_rtcp/source/rtp_generic_frame_descriptor_extension.h"
#include "modules/rtp_rtcp/source/rtp_packet_to_send.h"
#include "modules/rtp_rtcp/source/rtp_packetizer_av1_test_helper.h"
#include "test/gmock.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
using ::testing::ElementsAreArray;
using ::testing::Eq;
using ::testing::IsEmpty;
using ::testing::Matches;
using ::testing::SizeIs;
using ::testing::UnorderedElementsAre;
using ::testing::UnorderedElementsAreArray;
using PayloadFormat = RtpVideoFrameAssembler::PayloadFormat;
class PacketBuilder {
public:
explicit PacketBuilder(PayloadFormat format)
: format_(format), packet_to_send_(&extension_manager_) {}
PacketBuilder& WithSeqNum(uint16_t seq_num) {
seq_num_ = seq_num;
return *this;
}
PacketBuilder& WithPayload(rtc::ArrayView<const uint8_t> payload) {
payload_.assign(payload.begin(), payload.end());
return *this;
}
PacketBuilder& WithVideoHeader(const RTPVideoHeader& video_header) {
video_header_ = video_header;
return *this;
}
template <typename T, typename... Args>
PacketBuilder& WithExtension(int id, const Args&... args) {
extension_manager_.Register<T>(id);
packet_to_send_.IdentifyExtensions(extension_manager_);
packet_to_send_.SetExtension<T>(std::forward<const Args>(args)...);
return *this;
}
RtpPacketReceived Build() {
auto packetizer =
RtpPacketizer::Create(GetVideoCodecType(), payload_, {}, video_header_);
packetizer->NextPacket(&packet_to_send_);
packet_to_send_.SetSequenceNumber(seq_num_);
RtpPacketReceived received(&extension_manager_);
received.Parse(packet_to_send_.Buffer());
return received;
}
private:
absl::optional<VideoCodecType> GetVideoCodecType() {
switch (format_) {
case PayloadFormat::kRaw: {
return absl::nullopt;
}
case PayloadFormat::kH264: {
return kVideoCodecH264;
}
case PayloadFormat::kVp8: {
return kVideoCodecVP8;
}
case PayloadFormat::kVp9: {
return kVideoCodecVP9;
}
case PayloadFormat::kAv1: {
return kVideoCodecAV1;
}
case PayloadFormat::kH265: {
return kVideoCodecH265;
}
case PayloadFormat::kGeneric: {
return kVideoCodecGeneric;
}
}
RTC_DCHECK_NOTREACHED();
return absl::nullopt;
}
const RtpVideoFrameAssembler::PayloadFormat format_;
uint16_t seq_num_ = 0;
std::vector<uint8_t> payload_;
RTPVideoHeader video_header_;
RtpPacketReceived::ExtensionManager extension_manager_;
RtpPacketToSend packet_to_send_;
};
RtpPacketReceived PaddingPacket(uint16_t seq_num) {
RtpPacketReceived padding_packet;
padding_packet.SetSequenceNumber(seq_num);
padding_packet.SetPadding(224);
return padding_packet;
}
void AppendFrames(RtpVideoFrameAssembler::FrameVector from,
RtpVideoFrameAssembler::FrameVector& to) {
to.insert(to.end(), std::make_move_iterator(from.begin()),
std::make_move_iterator(from.end()));
}
rtc::ArrayView<int64_t> References(const std::unique_ptr<EncodedFrame>& frame) {
return rtc::MakeArrayView(frame->references, frame->num_references);
}
rtc::ArrayView<uint8_t> Payload(const std::unique_ptr<EncodedFrame>& frame) {
return rtc::ArrayView<uint8_t>(*frame->GetEncodedData());
}
TEST(RtpVideoFrameAssembler, Vp8Packetization) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kVp8);
// When sending VP8 over RTP parts of the payload is actually inspected at the
// RTP level. It just so happen that the initial 'V' sets the keyframe bit
// (0x01) to the correct value.
uint8_t kKeyframePayload[] = "Vp8Keyframe";
ASSERT_EQ(kKeyframePayload[0] & 0x01, 0);
uint8_t kDeltaframePayload[] = "SomeFrame";
ASSERT_EQ(kDeltaframePayload[0] & 0x01, 1);
RtpVideoFrameAssembler::FrameVector frames;
RTPVideoHeader video_header;
auto& vp8_header =
video_header.video_type_header.emplace<RTPVideoHeaderVP8>();
vp8_header.pictureId = 10;
vp8_header.tl0PicIdx = 0;
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kVp8)
.WithPayload(kKeyframePayload)
.WithVideoHeader(video_header)
.Build()),
frames);
vp8_header.pictureId = 11;
vp8_header.tl0PicIdx = 1;
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kVp8)
.WithPayload(kDeltaframePayload)
.WithVideoHeader(video_header)
.Build()),
frames);
ASSERT_THAT(frames, SizeIs(2));
auto first_frame = frames[0].ExtractFrame();
EXPECT_THAT(first_frame->Id(), Eq(10));
EXPECT_THAT(References(first_frame), IsEmpty());
EXPECT_THAT(Payload(first_frame), ElementsAreArray(kKeyframePayload));
auto second_frame = frames[1].ExtractFrame();
EXPECT_THAT(second_frame->Id(), Eq(11));
EXPECT_THAT(References(second_frame), UnorderedElementsAre(10));
EXPECT_THAT(Payload(second_frame), ElementsAreArray(kDeltaframePayload));
}
TEST(RtpVideoFrameAssembler, Vp9Packetization) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kVp9);
RtpVideoFrameAssembler::FrameVector frames;
uint8_t kPayload[] = "SomePayload";
RTPVideoHeader video_header;
auto& vp9_header =
video_header.video_type_header.emplace<RTPVideoHeaderVP9>();
vp9_header.InitRTPVideoHeaderVP9();
vp9_header.picture_id = 10;
vp9_header.tl0_pic_idx = 0;
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kVp9)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.Build()),
frames);
vp9_header.picture_id = 11;
vp9_header.tl0_pic_idx = 1;
vp9_header.inter_pic_predicted = true;
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kVp9)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.Build()),
frames);
ASSERT_THAT(frames, SizeIs(2));
auto first_frame = frames[0].ExtractFrame();
EXPECT_THAT(first_frame->Id(), Eq(10));
EXPECT_THAT(Payload(first_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(first_frame), IsEmpty());
auto second_frame = frames[1].ExtractFrame();
EXPECT_THAT(second_frame->Id(), Eq(11));
EXPECT_THAT(Payload(second_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(second_frame), UnorderedElementsAre(10));
}
TEST(RtpVideoFrameAssembler, Av1Packetization) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kAv1);
RtpVideoFrameAssembler::FrameVector frames;
auto kKeyframePayload =
BuildAv1Frame({Av1Obu(kAv1ObuTypeSequenceHeader).WithPayload({1, 2, 3}),
Av1Obu(kAv1ObuTypeFrame).WithPayload({4, 5, 6})});
auto kDeltaframePayload =
BuildAv1Frame({Av1Obu(kAv1ObuTypeFrame).WithPayload({7, 8, 9})});
RTPVideoHeader video_header;
video_header.frame_type = VideoFrameType::kVideoFrameKey;
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kAv1)
.WithPayload(kKeyframePayload)
.WithVideoHeader(video_header)
.WithSeqNum(20)
.Build()),
frames);
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kAv1)
.WithPayload(kDeltaframePayload)
.WithSeqNum(21)
.Build()),
frames);
ASSERT_THAT(frames, SizeIs(2));
auto first_frame = frames[0].ExtractFrame();
EXPECT_THAT(first_frame->Id(), Eq(20));
EXPECT_THAT(Payload(first_frame), ElementsAreArray(kKeyframePayload));
EXPECT_THAT(References(first_frame), IsEmpty());
auto second_frame = frames[1].ExtractFrame();
EXPECT_THAT(second_frame->Id(), Eq(21));
EXPECT_THAT(Payload(second_frame), ElementsAreArray(kDeltaframePayload));
EXPECT_THAT(References(second_frame), UnorderedElementsAre(20));
}
TEST(RtpVideoFrameAssembler, RawPacketizationDependencyDescriptorExtension) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kRaw);
RtpVideoFrameAssembler::FrameVector frames;
uint8_t kPayload[] = "SomePayload";
FrameDependencyStructure dependency_structure;
dependency_structure.num_decode_targets = 1;
dependency_structure.num_chains = 1;
dependency_structure.decode_target_protected_by_chain.push_back(0);
dependency_structure.templates.push_back(
FrameDependencyTemplate().S(0).T(0).Dtis("S").ChainDiffs({0}));
dependency_structure.templates.push_back(
FrameDependencyTemplate().S(0).T(0).Dtis("S").ChainDiffs({10}).FrameDiffs(
{10}));
DependencyDescriptor dependency_descriptor;
dependency_descriptor.frame_number = 10;
dependency_descriptor.frame_dependencies = dependency_structure.templates[0];
dependency_descriptor.attached_structure =
std::make_unique<FrameDependencyStructure>(dependency_structure);
AppendFrames(assembler.InsertPacket(
PacketBuilder(PayloadFormat::kRaw)
.WithPayload(kPayload)
.WithExtension<RtpDependencyDescriptorExtension>(
1, dependency_structure, dependency_descriptor)
.Build()),
frames);
dependency_descriptor.frame_number = 20;
dependency_descriptor.frame_dependencies = dependency_structure.templates[1];
dependency_descriptor.attached_structure.reset();
AppendFrames(assembler.InsertPacket(
PacketBuilder(PayloadFormat::kRaw)
.WithPayload(kPayload)
.WithExtension<RtpDependencyDescriptorExtension>(
1, dependency_structure, dependency_descriptor)
.Build()),
frames);
ASSERT_THAT(frames, SizeIs(2));
auto first_frame = frames[0].ExtractFrame();
EXPECT_THAT(first_frame->Id(), Eq(10));
EXPECT_THAT(Payload(first_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(first_frame), IsEmpty());
auto second_frame = frames[1].ExtractFrame();
EXPECT_THAT(second_frame->Id(), Eq(20));
EXPECT_THAT(Payload(second_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(second_frame), UnorderedElementsAre(10));
}
TEST(RtpVideoFrameAssembler, RawPacketizationGenericDescriptor00Extension) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kRaw);
RtpVideoFrameAssembler::FrameVector frames;
uint8_t kPayload[] = "SomePayload";
RtpGenericFrameDescriptor generic;
generic.SetFirstPacketInSubFrame(true);
generic.SetLastPacketInSubFrame(true);
generic.SetFrameId(100);
AppendFrames(
assembler.InsertPacket(
PacketBuilder(PayloadFormat::kRaw)
.WithPayload(kPayload)
.WithExtension<RtpGenericFrameDescriptorExtension00>(1, generic)
.Build()),
frames);
generic.SetFrameId(102);
generic.AddFrameDependencyDiff(2);
AppendFrames(
assembler.InsertPacket(
PacketBuilder(PayloadFormat::kRaw)
.WithPayload(kPayload)
.WithExtension<RtpGenericFrameDescriptorExtension00>(1, generic)
.Build()),
frames);
ASSERT_THAT(frames, SizeIs(2));
auto first_frame = frames[0].ExtractFrame();
EXPECT_THAT(first_frame->Id(), Eq(100));
EXPECT_THAT(Payload(first_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(first_frame), IsEmpty());
auto second_frame = frames[1].ExtractFrame();
EXPECT_THAT(second_frame->Id(), Eq(102));
EXPECT_THAT(Payload(second_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(second_frame), UnorderedElementsAre(100));
}
TEST(RtpVideoFrameAssembler, RawPacketizationGenericPayloadDescriptor) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kGeneric);
RtpVideoFrameAssembler::FrameVector frames;
uint8_t kPayload[] = "SomePayload";
RTPVideoHeader video_header;
video_header.frame_type = VideoFrameType::kVideoFrameKey;
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(123)
.Build()),
frames);
video_header.frame_type = VideoFrameType::kVideoFrameDelta;
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(124)
.Build()),
frames);
ASSERT_THAT(frames, SizeIs(2));
auto first_frame = frames[0].ExtractFrame();
EXPECT_THAT(first_frame->Id(), Eq(123));
EXPECT_THAT(Payload(first_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(first_frame), IsEmpty());
auto second_frame = frames[1].ExtractFrame();
EXPECT_THAT(second_frame->Id(), Eq(124));
EXPECT_THAT(Payload(second_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(second_frame), UnorderedElementsAre(123));
}
TEST(RtpVideoFrameAssembler, Padding) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kGeneric);
RtpVideoFrameAssembler::FrameVector frames;
uint8_t kPayload[] = "SomePayload";
RTPVideoHeader video_header;
video_header.frame_type = VideoFrameType::kVideoFrameKey;
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(123)
.Build()),
frames);
video_header.frame_type = VideoFrameType::kVideoFrameDelta;
AppendFrames(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(125)
.Build()),
frames);
ASSERT_THAT(frames, SizeIs(1));
auto first_frame = frames[0].ExtractFrame();
EXPECT_THAT(first_frame->Id(), Eq(123));
EXPECT_THAT(Payload(first_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(first_frame), IsEmpty());
AppendFrames(assembler.InsertPacket(PaddingPacket(/*seq_num=*/124)), frames);
ASSERT_THAT(frames, SizeIs(2));
auto second_frame = frames[1].ExtractFrame();
EXPECT_THAT(second_frame->Id(), Eq(125));
EXPECT_THAT(Payload(second_frame), ElementsAreArray(kPayload));
EXPECT_THAT(References(second_frame), UnorderedElementsAre(123));
}
TEST(RtpVideoFrameAssembler, ClearOldPackets) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kGeneric);
// If we don't have a payload the packet will be counted as a padding packet.
uint8_t kPayload[] = "DontCare";
RTPVideoHeader video_header;
video_header.frame_type = VideoFrameType::kVideoFrameKey;
EXPECT_THAT(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(0)
.Build()),
SizeIs(1));
EXPECT_THAT(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(2000)
.Build()),
SizeIs(1));
EXPECT_THAT(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(0)
.Build()),
SizeIs(0));
EXPECT_THAT(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(1)
.Build()),
SizeIs(1));
}
TEST(RtpVideoFrameAssembler, ClearOldPacketsWithPadding) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kGeneric);
uint8_t kPayload[] = "DontCare";
RTPVideoHeader video_header;
video_header.frame_type = VideoFrameType::kVideoFrameKey;
EXPECT_THAT(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(0)
.Build()),
SizeIs(1));
EXPECT_THAT(assembler.InsertPacket(PaddingPacket(/*seq_num=*/2000)),
SizeIs(0));
EXPECT_THAT(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(0)
.Build()),
SizeIs(0));
EXPECT_THAT(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(1)
.Build()),
SizeIs(1));
}
TEST(RtpVideoFrameAssembler, SeqNumStartAndSeqNumEndSet) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kGeneric);
RtpVideoFrameAssembler::FrameVector frames;
uint8_t kPayload[] =
"Some payload that will get split into two when packetized.";
RTPVideoHeader video_header;
video_header.frame_type = VideoFrameType::kVideoFrameKey;
RtpPacketizer::PayloadSizeLimits limits;
limits.max_payload_len = sizeof(kPayload) - 1;
auto packetizer =
RtpPacketizer::Create(kVideoCodecGeneric, kPayload, limits, video_header);
ASSERT_THAT(packetizer->NumPackets(), Eq(2U));
RtpPacketReceived::ExtensionManager extension_manager;
{
RtpPacketToSend send_packet(&extension_manager);
packetizer->NextPacket(&send_packet);
send_packet.SetSequenceNumber(123);
RtpPacketReceived received_packet(&extension_manager);
received_packet.Parse(send_packet.Buffer());
assembler.InsertPacket(received_packet);
}
{
RtpPacketToSend send_packet(&extension_manager);
packetizer->NextPacket(&send_packet);
send_packet.SetSequenceNumber(124);
RtpPacketReceived received_packet(&extension_manager);
received_packet.Parse(send_packet.Buffer());
AppendFrames(assembler.InsertPacket(received_packet), frames);
}
ASSERT_THAT(frames, SizeIs(1));
EXPECT_THAT(frames[0].RtpSeqNumStart(), Eq(123));
EXPECT_THAT(frames[0].RtpSeqNumEnd(), Eq(124));
}
TEST(RtpVideoFrameAssembler, SeqNumStartAndSeqNumEndSetWhenPaddingReceived) {
RtpVideoFrameAssembler assembler(RtpVideoFrameAssembler::kGeneric);
RtpVideoFrameAssembler::FrameVector frames;
uint8_t kPayload[] =
"Some payload that will get split into two when packetized.";
RTPVideoHeader video_header;
video_header.frame_type = VideoFrameType::kVideoFrameKey;
EXPECT_THAT(assembler.InsertPacket(PacketBuilder(PayloadFormat::kGeneric)
.WithPayload(kPayload)
.WithVideoHeader(video_header)
.WithSeqNum(121)
.Build()),
SizeIs(1));
video_header.frame_type = VideoFrameType::kVideoFrameDelta;
RtpPacketReceived::ExtensionManager extension_manager;
RtpPacketizer::PayloadSizeLimits limits;
limits.max_payload_len = sizeof(kPayload) - 1;
auto packetizer =
RtpPacketizer::Create(kVideoCodecGeneric, kPayload, limits, video_header);
ASSERT_THAT(packetizer->NumPackets(), Eq(2U));
{
RtpPacketToSend send_packet(&extension_manager);
packetizer->NextPacket(&send_packet);
send_packet.SetSequenceNumber(123);
RtpPacketReceived received_packet(&extension_manager);
received_packet.Parse(send_packet.Buffer());
assembler.InsertPacket(received_packet);
}
{
RtpPacketToSend send_packet(&extension_manager);
packetizer->NextPacket(&send_packet);
send_packet.SetSequenceNumber(124);
RtpPacketReceived received_packet(&extension_manager);
received_packet.Parse(send_packet.Buffer());
assembler.InsertPacket(received_packet);
}
AppendFrames(assembler.InsertPacket(PaddingPacket(/*seq_num=*/122)), frames);
ASSERT_THAT(frames, SizeIs(1));
EXPECT_THAT(frames[0].RtpSeqNumStart(), Eq(123));
EXPECT_THAT(frames[0].RtpSeqNumEnd(), Eq(124));
}
} // namespace
} // namespace webrtc