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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 "testing/gtest/include/gtest/gtest.h"
#include "webrtc/video_engine/report_block_stats.h"
namespace webrtc {
class ReportBlockStatsTest : public ::testing::Test {
protected:
ReportBlockStatsTest() : kSsrc1(0x12345), kSsrc2(0x23456) {}
virtual void SetUp() OVERRIDE {
// kSsrc1: block 1-3.
block1_1_.cumulativeLost = 10;
block1_1_.fractionLost = 123;
block1_1_.extendedHighSeqNum = 24000;
block1_1_.jitter = 777;
block1_1_.sourceSSRC = kSsrc1;
block1_2_.cumulativeLost = 15;
block1_2_.fractionLost = 0;
block1_2_.extendedHighSeqNum = 24100;
block1_2_.jitter = 222;
block1_2_.sourceSSRC = kSsrc1;
block1_3_.cumulativeLost = 50;
block1_3_.fractionLost = 0;
block1_3_.extendedHighSeqNum = 24200;
block1_3_.jitter = 333;
block1_3_.sourceSSRC = kSsrc1;
// kSsrc2: block 1,2.
block2_1_.cumulativeLost = 111;
block2_1_.fractionLost = 222;
block2_1_.extendedHighSeqNum = 8500;
block2_1_.jitter = 555;
block2_1_.sourceSSRC = kSsrc2;
block2_2_.cumulativeLost = 136;
block2_2_.fractionLost = 0;
block2_2_.extendedHighSeqNum = 8800;
block2_2_.jitter = 888;
block2_2_.sourceSSRC = 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.cumulative_lost = stats.cumulativeLost;
block.fraction_lost = stats.fractionLost;
block.extended_max_sequence_number = stats.extendedHighSeqNum;
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.fractionLost);
EXPECT_EQ(0U, aggregated.cumulativeLost);
EXPECT_EQ(0U, aggregated.jitter);
EXPECT_EQ(0U, aggregated.extendedHighSeqNum);
}
TEST_F(ReportBlockStatsTest, AggregateAndStore_OneSsrc) {
ReportBlockStats stats;
RTCPReportBlock aggregated = stats.AggregateAndStore(ssrc1block1_);
// One ssrc, no aggregation done.
EXPECT_EQ(123U, aggregated.fractionLost);
EXPECT_EQ(10U, aggregated.cumulativeLost);
EXPECT_EQ(777U, aggregated.jitter);
EXPECT_EQ(24000U, aggregated.extendedHighSeqNum);
aggregated = stats.AggregateAndStore(ssrc1block2_);
EXPECT_EQ(0U, aggregated.fractionLost);
EXPECT_EQ(15U, aggregated.cumulativeLost);
EXPECT_EQ(222U, aggregated.jitter);
EXPECT_EQ(24100U, aggregated.extendedHighSeqNum);
// 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.fractionLost);
EXPECT_EQ(10U + 111U, aggregated.cumulativeLost);
EXPECT_EQ((777U + 555U) / 2, aggregated.jitter);
EXPECT_EQ(0U, aggregated.extendedHighSeqNum);
aggregated = stats.AggregateAndStore(ssrc12block2_);
// fl: 255 * ((15-10) + (136-111)) / ((24100-24000) + (8800-8500)) = 19
EXPECT_EQ(19U, aggregated.fractionLost);
EXPECT_EQ(15U + 136U, aggregated.cumulativeLost);
EXPECT_EQ((222U + 888U) / 2, aggregated.jitter);
EXPECT_EQ(0U, aggregated.extendedHighSeqNum);
// 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(0, stats.FractionLostInPercent());
// First block => 0%
stats.Store(RtcpReportBlockToRtcpStatistics(block1_1_), kRemoteSsrc, kSsrc1);
EXPECT_EQ(0, 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
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