mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-14 22:30:40 +01:00
ddbbf4601b
Bug: webrtc:9434 Change-Id: I840f39afdff1851d939005f82e64b23927bf455e Reviewed-on: https://webrtc-review.googlesource.com/87146 Commit-Queue: Anastasia Koloskova <koloskova@webrtc.org> Reviewed-by: Björn Terelius <terelius@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24369}
102 lines
4.1 KiB
C++
102 lines
4.1 KiB
C++
/*
|
|
* Copyright (c) 2018 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 <vector>
|
|
|
|
#include "modules/congestion_controller/pcc/utility_function.h"
|
|
#include "test/gtest.h"
|
|
|
|
namespace webrtc {
|
|
namespace pcc {
|
|
namespace test {
|
|
namespace {
|
|
constexpr double kLossCoefficient = 11.35;
|
|
constexpr double kThroughputPower = 0.9;
|
|
constexpr double kThroughputCoefficient = 1;
|
|
constexpr double kDelayGradientNegativeBound = 10;
|
|
|
|
const Timestamp kStartTime = Timestamp::us(0);
|
|
const TimeDelta kPacketsDelta = TimeDelta::ms(1);
|
|
const TimeDelta kIntervalDuration = TimeDelta::ms(100);
|
|
const DataRate kSendingBitrate = DataRate::bps(1000);
|
|
|
|
const DataSize kDefaultDataSize = DataSize::bytes(100);
|
|
const TimeDelta kDefaultDelay = TimeDelta::ms(100);
|
|
|
|
std::vector<PacketResult> CreatePacketResults(
|
|
const std::vector<Timestamp>& packets_send_times,
|
|
const std::vector<Timestamp>& packets_received_times = {},
|
|
const std::vector<DataSize>& packets_sizes = {}) {
|
|
std::vector<PacketResult> packet_results;
|
|
PacketResult packet_result;
|
|
SentPacket sent_packet;
|
|
for (size_t i = 0; i < packets_send_times.size(); ++i) {
|
|
sent_packet.send_time = packets_send_times[i];
|
|
if (packets_sizes.empty()) {
|
|
sent_packet.size = kDefaultDataSize;
|
|
} else {
|
|
sent_packet.size = packets_sizes[i];
|
|
}
|
|
packet_result.sent_packet = sent_packet;
|
|
if (packets_received_times.empty()) {
|
|
packet_result.receive_time = packets_send_times[i] + kDefaultDelay;
|
|
} else {
|
|
packet_result.receive_time = packets_received_times[i];
|
|
}
|
|
packet_results.push_back(packet_result);
|
|
}
|
|
return packet_results;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
TEST(PccVivaceUtilityFunctionTest,
|
|
UtilityIsThroughputTermIfAllRestCoefficientsAreZero) {
|
|
VivaceUtilityFunction utility_function(0, 0, kThroughputCoefficient,
|
|
kThroughputPower, 0,
|
|
kDelayGradientNegativeBound);
|
|
PccMonitorInterval monitor_interval(kSendingBitrate, kStartTime,
|
|
kIntervalDuration);
|
|
monitor_interval.OnPacketsFeedback(CreatePacketResults(
|
|
{kStartTime + kPacketsDelta, kStartTime + 2 * kPacketsDelta,
|
|
kStartTime + 3 * kPacketsDelta, kStartTime + 2 * kIntervalDuration},
|
|
{kStartTime + kPacketsDelta + kDefaultDelay, Timestamp::Infinity(),
|
|
kStartTime + kDefaultDelay + 3 * kPacketsDelta, Timestamp::Infinity()},
|
|
{kDefaultDataSize, kDefaultDataSize, kDefaultDataSize,
|
|
kDefaultDataSize}));
|
|
EXPECT_DOUBLE_EQ(utility_function.Compute(monitor_interval),
|
|
kThroughputCoefficient *
|
|
std::pow(kSendingBitrate.bps(), kThroughputPower));
|
|
}
|
|
|
|
TEST(PccVivaceUtilityFunctionTest,
|
|
LossTermIsNonZeroIfLossCoefficientIsNonZero) {
|
|
VivaceUtilityFunction utility_function(
|
|
0, kLossCoefficient, kThroughputCoefficient, kThroughputPower, 0,
|
|
kDelayGradientNegativeBound);
|
|
PccMonitorInterval monitor_interval(kSendingBitrate, kStartTime,
|
|
kIntervalDuration);
|
|
monitor_interval.OnPacketsFeedback(CreatePacketResults(
|
|
{kStartTime + kPacketsDelta, kStartTime + 2 * kPacketsDelta,
|
|
kStartTime + 5 * kPacketsDelta, kStartTime + 2 * kIntervalDuration},
|
|
{kStartTime + kDefaultDelay, Timestamp::Infinity(),
|
|
kStartTime + kDefaultDelay, kStartTime + 3 * kIntervalDuration},
|
|
{}));
|
|
// The second packet was lost.
|
|
EXPECT_DOUBLE_EQ(utility_function.Compute(monitor_interval),
|
|
kThroughputCoefficient *
|
|
std::pow(kSendingBitrate.bps(), kThroughputPower) -
|
|
kLossCoefficient * kSendingBitrate.bps() *
|
|
monitor_interval.GetLossRate());
|
|
}
|
|
|
|
} // namespace test
|
|
} // namespace pcc
|
|
} // namespace webrtc
|