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find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/TimeDelta::Micros<\(.*\)>()/TimeDelta::Micros(\1)/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/TimeDelta::Millis<\(.*\)>()/TimeDelta::Millis(\1)/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/TimeDelta::Seconds<\(.*\)>()/TimeDelta::Seconds(\1)/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/TimeDelta::us/TimeDelta::Micros/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/TimeDelta::ms/TimeDelta::Millis/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/TimeDelta::seconds/TimeDelta::Seconds/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/Timestamp::Micros<\(.*\)>()/Timestamp::Micros(\1)/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/Timestamp::Millis<\(.*\)>()/Timestamp::Millis(\1)/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/Timestamp::Seconds<\(.*\)>()/Timestamp::Seconds(\1)/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/Timestamp::us/Timestamp::Micros/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/Timestamp::ms/Timestamp::Millis/g" find . -type f \( -name "*.h" -o -name "*.cc" \) | xargs sed -i -e "s/Timestamp::seconds/Timestamp::Seconds/g" git cl format Bug: None Change-Id: I87469d2e4a38369654da839ab7c838215a7911e7 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168402 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#30491}
103 lines
3.5 KiB
C++
103 lines
3.5 KiB
C++
/*
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* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "common_video/frame_rate_estimator.h"
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#include "system_wrappers/include/clock.h"
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#include "test/gmock.h"
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#include "test/gtest.h"
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namespace webrtc {
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namespace {
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constexpr TimeDelta kDefaultWindow = TimeDelta::Millis(1000);
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}
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class FrameRateEstimatorTest : public ::testing::Test {
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public:
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FrameRateEstimatorTest() : clock_(123), estimator_(kDefaultWindow) {}
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protected:
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SimulatedClock clock_;
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FrameRateEstimator estimator_;
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};
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TEST_F(FrameRateEstimatorTest, NoEstimateWithLessThanTwoFrames) {
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EXPECT_FALSE(estimator_.GetAverageFps());
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estimator_.OnFrame(clock_.CurrentTime());
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EXPECT_FALSE(estimator_.GetAverageFps());
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clock_.AdvanceTime(TimeDelta::Millis(33));
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EXPECT_FALSE(estimator_.GetAverageFps());
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}
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TEST_F(FrameRateEstimatorTest, NoEstimateWithZeroSpan) {
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// Two frames, but they are spanning 0ms so can't estimate frame rate.
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estimator_.OnFrame(clock_.CurrentTime());
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estimator_.OnFrame(clock_.CurrentTime());
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EXPECT_FALSE(estimator_.GetAverageFps());
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}
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TEST_F(FrameRateEstimatorTest, SingleSpanFps) {
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const double kExpectedFps = 30.0;
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estimator_.OnFrame(clock_.CurrentTime());
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clock_.AdvanceTime(TimeDelta::Seconds(1) / kExpectedFps);
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estimator_.OnFrame(clock_.CurrentTime());
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EXPECT_NEAR(*estimator_.GetAverageFps(), kExpectedFps, 0.001);
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}
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TEST_F(FrameRateEstimatorTest, AverageFps) {
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// Insert frames a intervals corresponding to 10fps for half the window, then
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// 40fps half the window. The average should be 20fps.
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const double kLowFps = 10.0;
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const double kHighFps = 30.0;
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const double kExpectedFps = 20.0;
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const Timestamp start_time = clock_.CurrentTime();
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while (clock_.CurrentTime() - start_time < kDefaultWindow / 2) {
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estimator_.OnFrame(clock_.CurrentTime());
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clock_.AdvanceTime(TimeDelta::Seconds(1) / kLowFps);
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}
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while (clock_.CurrentTime() - start_time < kDefaultWindow) {
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estimator_.OnFrame(clock_.CurrentTime());
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clock_.AdvanceTime(TimeDelta::Seconds(1) / kHighFps);
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}
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EXPECT_NEAR(*estimator_.GetAverageFps(), kExpectedFps, 0.001);
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}
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TEST_F(FrameRateEstimatorTest, CullsOldFramesFromAveragingWindow) {
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// Two frames, just on the border of the 1s window => 1 fps.
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estimator_.OnFrame(clock_.CurrentTime());
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clock_.AdvanceTime(kDefaultWindow);
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estimator_.OnFrame(clock_.CurrentTime());
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EXPECT_TRUE(estimator_.GetAverageFps());
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EXPECT_NEAR(*estimator_.GetAverageFps(), 1.0, 0.001);
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// Oldest frame should just be pushed out the window, leaving a single frame
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// => no estimate possible.
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clock_.AdvanceTime(TimeDelta::Micros(1));
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EXPECT_FALSE(estimator_.GetAverageFps(clock_.CurrentTime()));
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}
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TEST_F(FrameRateEstimatorTest, Reset) {
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estimator_.OnFrame(clock_.CurrentTime());
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clock_.AdvanceTime(TimeDelta::Seconds(1) / 30);
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estimator_.OnFrame(clock_.CurrentTime());
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EXPECT_TRUE(estimator_.GetAverageFps());
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// Clear estimator, no estimate should be possible even after inserting one
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// new frame.
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estimator_.Reset();
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EXPECT_FALSE(estimator_.GetAverageFps());
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clock_.AdvanceTime(TimeDelta::Seconds(1) / 30);
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estimator_.OnFrame(clock_.CurrentTime());
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EXPECT_FALSE(estimator_.GetAverageFps());
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}
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} // namespace webrtc
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