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/*
* Copyright (c) 2014 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 "video/report_block_stats.h"
#include "test/gtest.h"
namespace webrtc {
class ReportBlockStatsTest : public ::testing::Test {
protected:
ReportBlockStatsTest() : kSsrc1(0x12345), kSsrc2(0x23456) {}
void SetUp() override {
// kSsrc1: block 1-3.
block1_1_.packets_lost = 10;
block1_1_.fraction_lost = 123;
block1_1_.extended_highest_sequence_number = 24000;
block1_1_.jitter = 777;
block1_1_.source_ssrc = kSsrc1;
block1_2_.packets_lost = 15;
block1_2_.fraction_lost = 0;
block1_2_.extended_highest_sequence_number = 24100;
block1_2_.jitter = 222;
block1_2_.source_ssrc = kSsrc1;
block1_3_.packets_lost = 50;
block1_3_.fraction_lost = 0;
block1_3_.extended_highest_sequence_number = 24200;
block1_3_.jitter = 333;
block1_3_.source_ssrc = kSsrc1;
// kSsrc2: block 1,2.
block2_1_.packets_lost = 111;
block2_1_.fraction_lost = 222;
block2_1_.extended_highest_sequence_number = 8500;
block2_1_.jitter = 555;
block2_1_.source_ssrc = kSsrc2;
block2_2_.packets_lost = 136;
block2_2_.fraction_lost = 0;
block2_2_.extended_highest_sequence_number = 8800;
block2_2_.jitter = 888;
block2_2_.source_ssrc = kSsrc2;
ssrc1block1_.push_back(block1_1_);
ssrc1block2_.push_back(block1_2_);
ssrc12block1_.push_back(block1_1_);
ssrc12block1_.push_back(block2_1_);
ssrc12block2_.push_back(block1_2_);
ssrc12block2_.push_back(block2_2_);
}
RtcpStatistics RtcpReportBlockToRtcpStatistics(const RTCPReportBlock& stats) {
RtcpStatistics block;
block.packets_lost = stats.packets_lost;
block.fraction_lost = stats.fraction_lost;
block.extended_highest_sequence_number =
stats.extended_highest_sequence_number;
block.jitter = stats.jitter;
return block;
}
const uint32_t kSsrc1;
const uint32_t kSsrc2;
RTCPReportBlock block1_1_;
RTCPReportBlock block1_2_;
RTCPReportBlock block1_3_;
RTCPReportBlock block2_1_;
RTCPReportBlock block2_2_;
std::vector<RTCPReportBlock> ssrc1block1_;
std::vector<RTCPReportBlock> ssrc1block2_;
std::vector<RTCPReportBlock> ssrc12block1_;
std::vector<RTCPReportBlock> ssrc12block2_;
};
TEST_F(ReportBlockStatsTest, AggregateAndStore_NoSsrc) {
ReportBlockStats stats;
std::vector<RTCPReportBlock> empty;
RTCPReportBlock aggregated = stats.AggregateAndStore(empty);
EXPECT_EQ(0U, aggregated.fraction_lost);
EXPECT_EQ(0, aggregated.packets_lost);
EXPECT_EQ(0U, aggregated.jitter);
EXPECT_EQ(0U, aggregated.extended_highest_sequence_number);
}
TEST_F(ReportBlockStatsTest, AggregateAndStore_OneSsrc) {
ReportBlockStats stats;
RTCPReportBlock aggregated = stats.AggregateAndStore(ssrc1block1_);
// One ssrc, no aggregation done.
EXPECT_EQ(123U, aggregated.fraction_lost);
EXPECT_EQ(10, aggregated.packets_lost);
EXPECT_EQ(777U, aggregated.jitter);
EXPECT_EQ(24000U, aggregated.extended_highest_sequence_number);
aggregated = stats.AggregateAndStore(ssrc1block2_);
EXPECT_EQ(0U, aggregated.fraction_lost);
EXPECT_EQ(15, aggregated.packets_lost);
EXPECT_EQ(222U, aggregated.jitter);
EXPECT_EQ(24100U, aggregated.extended_highest_sequence_number);
// fl: 100 * (15-10) / (24100-24000) = 5%
EXPECT_EQ(5, stats.FractionLostInPercent());
}
TEST_F(ReportBlockStatsTest, AggregateAndStore_TwoSsrcs) {
ReportBlockStats stats;
RTCPReportBlock aggregated = stats.AggregateAndStore(ssrc12block1_);
EXPECT_EQ(0U, aggregated.fraction_lost);
EXPECT_EQ(10 + 111, aggregated.packets_lost);
EXPECT_EQ((777U + 555U) / 2, aggregated.jitter);
EXPECT_EQ(0U, aggregated.extended_highest_sequence_number);
aggregated = stats.AggregateAndStore(ssrc12block2_);
// fl: 255 * ((15-10) + (136-111)) / ((24100-24000) + (8800-8500)) = 19
EXPECT_EQ(19U, aggregated.fraction_lost);
EXPECT_EQ(15 + 136, aggregated.packets_lost);
EXPECT_EQ((222U + 888U) / 2, aggregated.jitter);
EXPECT_EQ(0U, aggregated.extended_highest_sequence_number);
// fl: 100 * ((15-10) + (136-111)) / ((24100-24000) + (8800-8500)) = 7%
EXPECT_EQ(7, stats.FractionLostInPercent());
}
TEST_F(ReportBlockStatsTest, StoreAndGetFractionLost) {
const uint32_t kRemoteSsrc = 1;
ReportBlockStats stats;
EXPECT_EQ(-1, stats.FractionLostInPercent());
// First block.
stats.Store(RtcpReportBlockToRtcpStatistics(block1_1_), kRemoteSsrc, kSsrc1);
EXPECT_EQ(-1, stats.FractionLostInPercent());
// fl: 100 * (15-10) / (24100-24000) = 5%
stats.Store(RtcpReportBlockToRtcpStatistics(block1_2_), kRemoteSsrc, kSsrc1);
EXPECT_EQ(5, stats.FractionLostInPercent());
// fl: 100 * (50-10) / (24200-24000) = 20%
stats.Store(RtcpReportBlockToRtcpStatistics(block1_3_), kRemoteSsrc, kSsrc1);
EXPECT_EQ(20, stats.FractionLostInPercent());
}
} // namespace webrtc