| /* |
| * Copyright (c) 2016 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 "webrtc/call/flexfec_receive_stream_impl.h" |
| |
| #include <stdint.h> |
| #include <memory> |
| |
| #include "webrtc/call/rtp_stream_receiver_controller.h" |
| #include "webrtc/modules/pacing/packet_router.h" |
| #include "webrtc/modules/rtp_rtcp/include/flexfec_receiver.h" |
| #include "webrtc/modules/rtp_rtcp/mocks/mock_recovered_packet_receiver.h" |
| #include "webrtc/modules/rtp_rtcp/mocks/mock_rtcp_rtt_stats.h" |
| #include "webrtc/modules/rtp_rtcp/source/byte_io.h" |
| #include "webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h" |
| #include "webrtc/modules/utility/include/mock/mock_process_thread.h" |
| #include "webrtc/rtc_base/array_view.h" |
| #include "webrtc/rtc_base/ptr_util.h" |
| #include "webrtc/test/gmock.h" |
| #include "webrtc/test/gtest.h" |
| #include "webrtc/test/mock_transport.h" |
| |
| namespace webrtc { |
| |
| namespace { |
| |
| using ::testing::_; |
| |
| constexpr uint8_t kFlexfecPlType = 118; |
| constexpr uint8_t kFlexfecSsrc[] = {0x00, 0x00, 0x00, 0x01}; |
| constexpr uint8_t kMediaSsrc[] = {0x00, 0x00, 0x00, 0x02}; |
| |
| FlexfecReceiveStream::Config CreateDefaultConfig( |
| Transport* rtcp_send_transport) { |
| FlexfecReceiveStream::Config config(rtcp_send_transport); |
| config.payload_type = kFlexfecPlType; |
| config.remote_ssrc = ByteReader<uint32_t>::ReadBigEndian(kFlexfecSsrc); |
| config.protected_media_ssrcs = { |
| ByteReader<uint32_t>::ReadBigEndian(kMediaSsrc)}; |
| EXPECT_TRUE(config.IsCompleteAndEnabled()); |
| return config; |
| } |
| |
| RtpPacketReceived ParsePacket(rtc::ArrayView<const uint8_t> packet) { |
| RtpPacketReceived parsed_packet(nullptr); |
| EXPECT_TRUE(parsed_packet.Parse(packet)); |
| return parsed_packet; |
| } |
| |
| } // namespace |
| |
| TEST(FlexfecReceiveStreamConfigTest, IsCompleteAndEnabled) { |
| MockTransport rtcp_send_transport; |
| FlexfecReceiveStream::Config config(&rtcp_send_transport); |
| |
| config.local_ssrc = 18374743; |
| config.rtcp_mode = RtcpMode::kCompound; |
| config.transport_cc = true; |
| config.rtp_header_extensions.emplace_back(TransportSequenceNumber::kUri, 7); |
| EXPECT_FALSE(config.IsCompleteAndEnabled()); |
| |
| config.payload_type = 123; |
| EXPECT_FALSE(config.IsCompleteAndEnabled()); |
| |
| config.remote_ssrc = 238423838; |
| EXPECT_FALSE(config.IsCompleteAndEnabled()); |
| |
| config.protected_media_ssrcs.push_back(138989393); |
| EXPECT_TRUE(config.IsCompleteAndEnabled()); |
| |
| config.protected_media_ssrcs.push_back(33423423); |
| EXPECT_FALSE(config.IsCompleteAndEnabled()); |
| } |
| |
| class FlexfecReceiveStreamTest : public ::testing::Test { |
| protected: |
| FlexfecReceiveStreamTest() |
| : config_(CreateDefaultConfig(&rtcp_send_transport_)) { |
| EXPECT_CALL(process_thread_, RegisterModule(_, _)).Times(1); |
| receive_stream_ = rtc::MakeUnique<FlexfecReceiveStreamImpl>( |
| &rtp_stream_receiver_controller_, config_, &recovered_packet_receiver_, |
| &rtt_stats_, &process_thread_); |
| } |
| |
| ~FlexfecReceiveStreamTest() { |
| EXPECT_CALL(process_thread_, DeRegisterModule(_)).Times(1); |
| } |
| |
| MockTransport rtcp_send_transport_; |
| FlexfecReceiveStream::Config config_; |
| MockRecoveredPacketReceiver recovered_packet_receiver_; |
| MockRtcpRttStats rtt_stats_; |
| MockProcessThread process_thread_; |
| RtpStreamReceiverController rtp_stream_receiver_controller_; |
| std::unique_ptr<FlexfecReceiveStreamImpl> receive_stream_; |
| }; |
| |
| TEST_F(FlexfecReceiveStreamTest, ConstructDestruct) {} |
| |
| // Create a FlexFEC packet that protects a single media packet and ensure |
| // that the callback is called. Correctness of recovery is checked in the |
| // FlexfecReceiver unit tests. |
| TEST_F(FlexfecReceiveStreamTest, RecoversPacket) { |
| constexpr uint8_t kFlexfecSeqNum[] = {0x00, 0x01}; |
| constexpr uint8_t kFlexfecTs[] = {0x00, 0x11, 0x22, 0x33}; |
| constexpr uint8_t kMediaPlType = 107; |
| constexpr uint8_t kMediaSeqNum[] = {0x00, 0x02}; |
| constexpr uint8_t kMediaTs[] = {0xaa, 0xbb, 0xcc, 0xdd}; |
| |
| // This packet mask protects a single media packet, i.e., the FlexFEC payload |
| // is a copy of that media packet. When inserted in the FlexFEC pipeline, |
| // it will thus trivially recover the lost media packet. |
| constexpr uint8_t kKBit0 = 1 << 7; |
| constexpr uint8_t kFlexfecPktMask[] = {kKBit0 | 0x00, 0x01}; |
| constexpr uint8_t kPayloadLength[] = {0x00, 0x04}; |
| constexpr uint8_t kSsrcCount = 1; |
| constexpr uint8_t kReservedBits = 0x00; |
| constexpr uint8_t kPayloadBits = 0x00; |
| // clang-format off |
| constexpr uint8_t kFlexfecPacket[] = { |
| // RTP header. |
| 0x80, kFlexfecPlType, kFlexfecSeqNum[0], kFlexfecSeqNum[1], |
| kFlexfecTs[0], kFlexfecTs[1], kFlexfecTs[2], kFlexfecTs[3], |
| kFlexfecSsrc[0], kFlexfecSsrc[1], kFlexfecSsrc[2], kFlexfecSsrc[3], |
| // FlexFEC header. |
| 0x00, kMediaPlType, kPayloadLength[0], kPayloadLength[1], |
| kMediaTs[0], kMediaTs[1], kMediaTs[2], kMediaTs[3], |
| kSsrcCount, kReservedBits, kReservedBits, kReservedBits, |
| kMediaSsrc[0], kMediaSsrc[1], kMediaSsrc[2], kMediaSsrc[3], |
| kMediaSeqNum[0], kMediaSeqNum[1], kFlexfecPktMask[0], kFlexfecPktMask[1], |
| // FEC payload. |
| kPayloadBits, kPayloadBits, kPayloadBits, kPayloadBits}; |
| // clang-format on |
| |
| testing::StrictMock<MockRecoveredPacketReceiver> recovered_packet_receiver; |
| EXPECT_CALL(process_thread_, RegisterModule(_, _)).Times(1); |
| FlexfecReceiveStreamImpl receive_stream(&rtp_stream_receiver_controller_, |
| config_, &recovered_packet_receiver, |
| &rtt_stats_, &process_thread_); |
| |
| EXPECT_CALL(recovered_packet_receiver, |
| OnRecoveredPacket(_, kRtpHeaderSize + kPayloadLength[1])); |
| |
| receive_stream.OnRtpPacket(ParsePacket(kFlexfecPacket)); |
| |
| // Tear-down |
| EXPECT_CALL(process_thread_, DeRegisterModule(_)).Times(1); |
| } |
| |
| } // namespace webrtc |