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/*
* Copyright (c) 2017 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 "call/rtx_receive_stream.h"
#include "call/test/mock_rtp_packet_sink_interface.h"
#include "modules/rtp_rtcp/include/rtp_header_extension_map.h"
#include "modules/rtp_rtcp/source/rtp_header_extensions.h"
#include "modules/rtp_rtcp/source/rtp_packet_received.h"
#include "test/gmock.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
using ::testing::_;
using ::testing::Property;
using ::testing::StrictMock;
constexpr int kMediaPayloadType = 100;
constexpr int kRtxPayloadType = 98;
constexpr int kUnknownPayloadType = 90;
constexpr uint32_t kMediaSSRC = 0x3333333;
constexpr uint16_t kMediaSeqno = 0x5657;
constexpr uint8_t kRtxPacket[] = {
0x80, // Version 2.
98, // Payload type.
0x12,
0x34, // Seqno.
0x11,
0x11,
0x11,
0x11, // Timestamp.
0x22,
0x22,
0x22,
0x22, // SSRC.
// RTX header.
0x56,
0x57, // Orig seqno.
// Payload.
0xee,
};
constexpr uint8_t kRtxPacketWithPadding[] = {
0xa0, // Version 2, P set
98, // Payload type.
0x12,
0x34, // Seqno.
0x11,
0x11,
0x11,
0x11, // Timestamp.
0x22,
0x22,
0x22,
0x22, // SSRC.
// RTX header.
0x56,
0x57, // Orig seqno.
// Padding
0x1,
};
constexpr uint8_t kRtxPacketWithCVO[] = {
0x90, // Version 2, X set.
98, // Payload type.
0x12,
0x34, // Seqno.
0x11,
0x11,
0x11,
0x11, // Timestamp.
0x22,
0x22,
0x22,
0x22, // SSRC.
0xbe,
0xde,
0x00,
0x01, // Extension header.
0x30,
0x01,
0x00,
0x00, // 90 degree rotation.
// RTX header.
0x56,
0x57, // Orig seqno.
// Payload.
0xee,
};
std::map<int, int> PayloadTypeMapping() {
const std::map<int, int> m = {{kRtxPayloadType, kMediaPayloadType}};
return m;
}
template <typename T>
rtc::ArrayView<T> Truncate(rtc::ArrayView<T> a, size_t drop) {
return a.subview(0, a.size() - drop);
}
} // namespace
TEST(RtxReceiveStreamTest, RestoresPacketPayload) {
StrictMock<MockRtpPacketSink> media_sink;
RtxReceiveStream rtx_sink(&media_sink, PayloadTypeMapping(), kMediaSSRC);
RtpPacketReceived rtx_packet;
EXPECT_TRUE(rtx_packet.Parse(rtc::ArrayView<const uint8_t>(kRtxPacket)));
EXPECT_CALL(media_sink, OnRtpPacket)
.WillOnce([](const RtpPacketReceived& packet) {
EXPECT_EQ(packet.SequenceNumber(), kMediaSeqno);
EXPECT_EQ(packet.Ssrc(), kMediaSSRC);
EXPECT_EQ(packet.PayloadType(), kMediaPayloadType);
EXPECT_THAT(packet.payload(), ::testing::ElementsAre(0xee));
});
rtx_sink.OnRtpPacket(rtx_packet);
}
TEST(RtxReceiveStreamTest, SetsRecoveredFlag) {
StrictMock<MockRtpPacketSink> media_sink;
RtxReceiveStream rtx_sink(&media_sink, PayloadTypeMapping(), kMediaSSRC);
RtpPacketReceived rtx_packet;
EXPECT_TRUE(rtx_packet.Parse(rtc::ArrayView<const uint8_t>(kRtxPacket)));
EXPECT_FALSE(rtx_packet.recovered());
EXPECT_CALL(media_sink, OnRtpPacket)
.WillOnce([](const RtpPacketReceived& packet) {
EXPECT_TRUE(packet.recovered());
});
rtx_sink.OnRtpPacket(rtx_packet);
}
TEST(RtxReceiveStreamTest, IgnoresUnknownPayloadType) {
StrictMock<MockRtpPacketSink> media_sink;
const std::map<int, int> payload_type_mapping = {
{kUnknownPayloadType, kMediaPayloadType}};
RtxReceiveStream rtx_sink(&media_sink, payload_type_mapping, kMediaSSRC);
RtpPacketReceived rtx_packet;
EXPECT_TRUE(rtx_packet.Parse(rtc::ArrayView<const uint8_t>(kRtxPacket)));
rtx_sink.OnRtpPacket(rtx_packet);
}
TEST(RtxReceiveStreamTest, IgnoresTruncatedPacket) {
StrictMock<MockRtpPacketSink> media_sink;
RtxReceiveStream rtx_sink(&media_sink, PayloadTypeMapping(), kMediaSSRC);
RtpPacketReceived rtx_packet;
EXPECT_TRUE(
rtx_packet.Parse(Truncate(rtc::ArrayView<const uint8_t>(kRtxPacket), 2)));
rtx_sink.OnRtpPacket(rtx_packet);
}
TEST(RtxReceiveStreamTest, CopiesRtpHeaderExtensions) {
StrictMock<MockRtpPacketSink> media_sink;
RtxReceiveStream rtx_sink(&media_sink, PayloadTypeMapping(), kMediaSSRC);
RtpHeaderExtensionMap extension_map;
extension_map.RegisterByType(3, kRtpExtensionVideoRotation);
RtpPacketReceived rtx_packet(&extension_map);
EXPECT_TRUE(
rtx_packet.Parse(rtc::ArrayView<const uint8_t>(kRtxPacketWithCVO)));
VideoRotation rotation = kVideoRotation_0;
EXPECT_TRUE(rtx_packet.GetExtension<VideoOrientation>(&rotation));
EXPECT_EQ(kVideoRotation_90, rotation);
EXPECT_CALL(media_sink, OnRtpPacket)
.WillOnce([](const RtpPacketReceived& packet) {
EXPECT_EQ(packet.SequenceNumber(), kMediaSeqno);
EXPECT_EQ(packet.Ssrc(), kMediaSSRC);
EXPECT_EQ(packet.PayloadType(), kMediaPayloadType);
EXPECT_THAT(packet.payload(), ::testing::ElementsAre(0xee));
VideoRotation rotation = kVideoRotation_0;
EXPECT_TRUE(packet.GetExtension<VideoOrientation>(&rotation));
EXPECT_EQ(rotation, kVideoRotation_90);
});
rtx_sink.OnRtpPacket(rtx_packet);
}
TEST(RtxReceiveStreamTest, PropagatesArrivalTime) {
StrictMock<MockRtpPacketSink> media_sink;
RtxReceiveStream rtx_sink(&media_sink, PayloadTypeMapping(), kMediaSSRC);
RtpPacketReceived rtx_packet(nullptr);
EXPECT_TRUE(rtx_packet.Parse(rtc::ArrayView<const uint8_t>(kRtxPacket)));
rtx_packet.set_arrival_time(Timestamp::Millis(123));
EXPECT_CALL(media_sink, OnRtpPacket(Property(&RtpPacketReceived::arrival_time,
Timestamp::Millis(123))));
rtx_sink.OnRtpPacket(rtx_packet);
}
TEST(RtxReceiveStreamTest, SupportsLargePacket) {
StrictMock<MockRtpPacketSink> media_sink;
RtxReceiveStream rtx_sink(&media_sink, PayloadTypeMapping(), kMediaSSRC);
RtpPacketReceived rtx_packet;
constexpr int kRtxPacketSize = 2000;
constexpr int kRtxPayloadOffset = 14;
uint8_t large_rtx_packet[kRtxPacketSize];
memcpy(large_rtx_packet, kRtxPacket, sizeof(kRtxPacket));
rtc::ArrayView<uint8_t> payload(large_rtx_packet + kRtxPayloadOffset,
kRtxPacketSize - kRtxPayloadOffset);
// Fill payload.
for (size_t i = 0; i < payload.size(); i++) {
payload[i] = i;
}
EXPECT_TRUE(
rtx_packet.Parse(rtc::ArrayView<const uint8_t>(large_rtx_packet)));
EXPECT_CALL(media_sink, OnRtpPacket)
.WillOnce([&](const RtpPacketReceived& packet) {
EXPECT_EQ(packet.SequenceNumber(), kMediaSeqno);
EXPECT_EQ(packet.Ssrc(), kMediaSSRC);
EXPECT_EQ(packet.PayloadType(), kMediaPayloadType);
EXPECT_THAT(packet.payload(), ::testing::ElementsAreArray(payload));
});
rtx_sink.OnRtpPacket(rtx_packet);
}
TEST(RtxReceiveStreamTest, SupportsLargePacketWithPadding) {
StrictMock<MockRtpPacketSink> media_sink;
RtxReceiveStream rtx_sink(&media_sink, PayloadTypeMapping(), kMediaSSRC);
RtpPacketReceived rtx_packet;
constexpr int kRtxPacketSize = 2000;
constexpr int kRtxPayloadOffset = 14;
constexpr int kRtxPaddingSize = 50;
uint8_t large_rtx_packet[kRtxPacketSize];
memcpy(large_rtx_packet, kRtxPacketWithPadding,
sizeof(kRtxPacketWithPadding));
rtc::ArrayView<uint8_t> payload(
large_rtx_packet + kRtxPayloadOffset,
kRtxPacketSize - kRtxPayloadOffset - kRtxPaddingSize);
rtc::ArrayView<uint8_t> padding(
large_rtx_packet + kRtxPacketSize - kRtxPaddingSize, kRtxPaddingSize);
// Fill payload.
for (size_t i = 0; i < payload.size(); i++) {
payload[i] = i;
}
// Fill padding. Only value of last padding byte matters.
for (size_t i = 0; i < padding.size(); i++) {
padding[i] = kRtxPaddingSize;
}
EXPECT_TRUE(
rtx_packet.Parse(rtc::ArrayView<const uint8_t>(large_rtx_packet)));
EXPECT_CALL(media_sink, OnRtpPacket)
.WillOnce([&](const RtpPacketReceived& packet) {
EXPECT_EQ(packet.SequenceNumber(), kMediaSeqno);
EXPECT_EQ(packet.Ssrc(), kMediaSSRC);
EXPECT_EQ(packet.PayloadType(), kMediaPayloadType);
EXPECT_THAT(packet.payload(), ::testing::ElementsAreArray(payload));
});
rtx_sink.OnRtpPacket(rtx_packet);
}
} // namespace webrtc
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