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/*
* Copyright (c) 2015 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/rtcp_packet/receiver_report.h"
#include <utility>
#include "test/gmock.h"
#include "test/gtest.h"
#include "test/rtcp_packet_parser.h"
using testing::ElementsAreArray;
using testing::IsEmpty;
using testing::make_tuple;
using webrtc::rtcp::ReceiverReport;
using webrtc::rtcp::ReportBlock;
namespace webrtc {
namespace {
const uint32_t kSenderSsrc = 0x12345678;
const uint32_t kRemoteSsrc = 0x23456789;
const uint8_t kFractionLost = 55;
const int32_t kCumulativeLost = 0x111213;
const uint32_t kExtHighestSeqNum = 0x22232425;
const uint32_t kJitter = 0x33343536;
const uint32_t kLastSr = 0x44454647;
const uint32_t kDelayLastSr = 0x55565758;
// Manually created ReceiverReport with one ReportBlock matching constants
// above.
// Having this block allows to test Create and Parse separately.
const uint8_t kPacket[] = {0x81, 201, 0x00, 0x07, 0x12, 0x34, 0x56, 0x78,
0x23, 0x45, 0x67, 0x89, 55, 0x11, 0x12, 0x13,
0x22, 0x23, 0x24, 0x25, 0x33, 0x34, 0x35, 0x36,
0x44, 0x45, 0x46, 0x47, 0x55, 0x56, 0x57, 0x58};
} // namespace
TEST(RtcpPacketReceiverReportTest, ParseWithOneReportBlock) {
ReceiverReport rr;
EXPECT_TRUE(test::ParseSinglePacket(kPacket, &rr));
const ReceiverReport& parsed = rr;
EXPECT_EQ(kSenderSsrc, parsed.sender_ssrc());
EXPECT_EQ(1u, parsed.report_blocks().size());
const ReportBlock& rb = parsed.report_blocks().front();
EXPECT_EQ(kRemoteSsrc, rb.source_ssrc());
EXPECT_EQ(kFractionLost, rb.fraction_lost());
EXPECT_EQ(kCumulativeLost, rb.cumulative_lost_signed());
EXPECT_EQ(kExtHighestSeqNum, rb.extended_high_seq_num());
EXPECT_EQ(kJitter, rb.jitter());
EXPECT_EQ(kLastSr, rb.last_sr());
EXPECT_EQ(kDelayLastSr, rb.delay_since_last_sr());
}
TEST(RtcpPacketReceiverReportTest, ParseFailsOnIncorrectSize) {
rtc::Buffer damaged_packet(kPacket);
damaged_packet[0]++; // Damage the packet: increase count field.
ReceiverReport rr;
EXPECT_FALSE(test::ParseSinglePacket(damaged_packet, &rr));
}
TEST(RtcpPacketReceiverReportTest, CreateWithOneReportBlock) {
ReceiverReport rr;
rr.SetSenderSsrc(kSenderSsrc);
ReportBlock rb;
rb.SetMediaSsrc(kRemoteSsrc);
rb.SetFractionLost(kFractionLost);
rb.SetCumulativeLost(kCumulativeLost);
rb.SetExtHighestSeqNum(kExtHighestSeqNum);
rb.SetJitter(kJitter);
rb.SetLastSr(kLastSr);
rb.SetDelayLastSr(kDelayLastSr);
rr.AddReportBlock(rb);
rtc::Buffer raw = rr.Build();
EXPECT_THAT(make_tuple(raw.data(), raw.size()), ElementsAreArray(kPacket));
}
TEST(RtcpPacketReceiverReportTest, CreateAndParseWithoutReportBlocks) {
ReceiverReport rr;
rr.SetSenderSsrc(kSenderSsrc);
rtc::Buffer raw = rr.Build();
ReceiverReport parsed;
EXPECT_TRUE(test::ParseSinglePacket(raw, &parsed));
EXPECT_EQ(kSenderSsrc, parsed.sender_ssrc());
EXPECT_THAT(parsed.report_blocks(), IsEmpty());
}
TEST(RtcpPacketReceiverReportTest, CreateAndParseWithTwoReportBlocks) {
ReceiverReport rr;
ReportBlock rb1;
rb1.SetMediaSsrc(kRemoteSsrc);
ReportBlock rb2;
rb2.SetMediaSsrc(kRemoteSsrc + 1);
rr.SetSenderSsrc(kSenderSsrc);
EXPECT_TRUE(rr.AddReportBlock(rb1));
EXPECT_TRUE(rr.AddReportBlock(rb2));
rtc::Buffer raw = rr.Build();
ReceiverReport parsed;
EXPECT_TRUE(test::ParseSinglePacket(raw, &parsed));
EXPECT_EQ(kSenderSsrc, parsed.sender_ssrc());
EXPECT_EQ(2u, parsed.report_blocks().size());
EXPECT_EQ(kRemoteSsrc, parsed.report_blocks()[0].source_ssrc());
EXPECT_EQ(kRemoteSsrc + 1, parsed.report_blocks()[1].source_ssrc());
}
TEST(RtcpPacketReceiverReportTest, CreateWithTooManyReportBlocks) {
ReceiverReport rr;
rr.SetSenderSsrc(kSenderSsrc);
ReportBlock rb;
for (size_t i = 0; i < ReceiverReport::kMaxNumberOfReportBlocks; ++i) {
rb.SetMediaSsrc(kRemoteSsrc + i);
EXPECT_TRUE(rr.AddReportBlock(rb));
}
rb.SetMediaSsrc(kRemoteSsrc + ReceiverReport::kMaxNumberOfReportBlocks);
EXPECT_FALSE(rr.AddReportBlock(rb));
}
TEST(RtcpPacketReceiverReportTest, SetReportBlocksOverwritesOldBlocks) {
ReceiverReport rr;
ReportBlock report_block;
// Use jitter field of the report blocks to distinguish them.
report_block.SetJitter(1001u);
rr.AddReportBlock(report_block);
ASSERT_EQ(rr.report_blocks().size(), 1u);
ASSERT_EQ(rr.report_blocks()[0].jitter(), 1001u);
std::vector<ReportBlock> blocks(3u);
blocks[0].SetJitter(2001u);
blocks[1].SetJitter(3001u);
blocks[2].SetJitter(4001u);
EXPECT_TRUE(rr.SetReportBlocks(blocks));
ASSERT_EQ(rr.report_blocks().size(), 3u);
EXPECT_EQ(rr.report_blocks()[0].jitter(), 2001u);
EXPECT_EQ(rr.report_blocks()[1].jitter(), 3001u);
EXPECT_EQ(rr.report_blocks()[2].jitter(), 4001u);
}
TEST(RtcpPacketReceiverReportTest, SetReportBlocksMaxLimit) {
ReceiverReport rr;
std::vector<ReportBlock> max_blocks(ReceiverReport::kMaxNumberOfReportBlocks);
EXPECT_TRUE(rr.SetReportBlocks(std::move(max_blocks)));
std::vector<ReportBlock> one_too_many_blocks(
ReceiverReport::kMaxNumberOfReportBlocks + 1);
EXPECT_FALSE(rr.SetReportBlocks(std::move(one_too_many_blocks)));
}
} // namespace webrtc