mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-19 16:47:50 +01:00
a4d873786f
This CL was generated by running git ls-files | grep -P "(\.h|\.cc)$" | grep -v 'sdk/' | grep -v 'rtc_base/ssl_' | \ grep -v 'fake_rtc_certificate_generator.h' | grep -v 'modules/audio_device/win/' | \ grep -v 'system_wrappers/source/clock.cc' | grep -v 'rtc_base/trace_event.h' | \ grep -v 'modules/audio_coding/codecs/ilbc/' | grep -v 'screen_capturer_mac.h' | \ grep -v 'spl_inl_mips.h' | grep -v 'data_size_unittest.cc' | grep -v 'timestamp_unittest.cc' \ | xargs clang-format -i ; git cl format Most of these changes are clang-format grouping and reordering includes differently. Bug: webrtc:9340 Change-Id: Ic83ddbc169bfacd21883e381b5181c3dd4fe8a63 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/144051 Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28505}
78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2016 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/congestion_controller/goog_cc/trendline_estimator.h"
|
|
|
|
#include "rtc_base/random.h"
|
|
#include "test/gtest.h"
|
|
|
|
namespace webrtc {
|
|
|
|
namespace {
|
|
constexpr size_t kWindowSize = 20;
|
|
constexpr double kSmoothing = 0.0;
|
|
constexpr double kGain = 1;
|
|
constexpr int64_t kAvgTimeBetweenPackets = 10;
|
|
constexpr size_t kPacketCount = 2 * kWindowSize + 1;
|
|
class TrendlineEstimatorForTest : public TrendlineEstimator {
|
|
public:
|
|
using TrendlineEstimator::modified_trend;
|
|
using TrendlineEstimator::TrendlineEstimator;
|
|
};
|
|
void TestEstimator(double slope, double jitter_stddev, double tolerance) {
|
|
TrendlineEstimatorForTest estimator(kWindowSize, kSmoothing, kGain, nullptr);
|
|
Random random(0x1234567);
|
|
int64_t send_times[kPacketCount];
|
|
int64_t recv_times[kPacketCount];
|
|
int64_t send_start_time = random.Rand(1000000);
|
|
int64_t recv_start_time = random.Rand(1000000);
|
|
for (size_t i = 0; i < kPacketCount; ++i) {
|
|
send_times[i] = send_start_time + i * kAvgTimeBetweenPackets;
|
|
double latency = i * kAvgTimeBetweenPackets / (1 - slope);
|
|
double jitter = random.Gaussian(0, jitter_stddev);
|
|
recv_times[i] = recv_start_time + latency + jitter;
|
|
}
|
|
for (size_t i = 1; i < kPacketCount; ++i) {
|
|
double recv_delta = recv_times[i] - recv_times[i - 1];
|
|
double send_delta = send_times[i] - send_times[i - 1];
|
|
estimator.Update(recv_delta, send_delta, 0, recv_times[i], true);
|
|
if (i < kWindowSize)
|
|
EXPECT_NEAR(estimator.modified_trend(), 0, 0.001);
|
|
else
|
|
EXPECT_NEAR(estimator.modified_trend(), slope, tolerance);
|
|
}
|
|
}
|
|
} // namespace
|
|
|
|
TEST(TrendlineEstimator, PerfectLineSlopeOneHalf) {
|
|
TestEstimator(0.5, 0, 0.001);
|
|
}
|
|
|
|
TEST(TrendlineEstimator, PerfectLineSlopeMinusOne) {
|
|
TestEstimator(-1, 0, 0.001);
|
|
}
|
|
|
|
TEST(TrendlineEstimator, PerfectLineSlopeZero) {
|
|
TestEstimator(0, 0, 0.001);
|
|
}
|
|
|
|
TEST(TrendlineEstimator, JitteryLineSlopeOneHalf) {
|
|
TestEstimator(0.5, kAvgTimeBetweenPackets / 3.0, 0.01);
|
|
}
|
|
|
|
TEST(TrendlineEstimator, JitteryLineSlopeMinusOne) {
|
|
TestEstimator(-1, kAvgTimeBetweenPackets / 3.0, 0.075);
|
|
}
|
|
|
|
TEST(TrendlineEstimator, JitteryLineSlopeZero) {
|
|
TestEstimator(0, kAvgTimeBetweenPackets / 3.0, 0.02);
|
|
}
|
|
|
|
} // namespace webrtc
|