92ea95e34a
In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC from src/webrtc to src/ (in order to preserve an healthy git history). This CL takes care of fixing header guards, #include paths, etc... NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578 Reviewed-on: https://webrtc-review.googlesource.com/1561 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19846}
484 lines
19 KiB
C++
484 lines
19 KiB
C++
/*
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* Copyright (c) 2013 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 <memory>
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#include "api/video/i420_buffer.h"
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#include "common_video/include/video_frame.h"
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#include "modules/video_coding/utility/quality_scaler.h"
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#include "rtc_base/event.h"
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#include "rtc_base/fakeclock.h"
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#include "test/gmock.h"
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#include "test/gtest.h"
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#include "video/overuse_frame_detector.h"
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namespace webrtc {
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using ::testing::InvokeWithoutArgs;
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namespace {
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const int kWidth = 640;
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const int kHeight = 480;
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const int kFrameIntervalUs = 33 * rtc::kNumMicrosecsPerMillisec;
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const int kProcessTimeUs = 5 * rtc::kNumMicrosecsPerMillisec;
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} // namespace
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class MockCpuOveruseObserver : public AdaptationObserverInterface {
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public:
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MockCpuOveruseObserver() {}
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virtual ~MockCpuOveruseObserver() {}
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MOCK_METHOD1(AdaptUp, void(AdaptReason));
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MOCK_METHOD1(AdaptDown, void(AdaptReason));
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};
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class CpuOveruseObserverImpl : public AdaptationObserverInterface {
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public:
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CpuOveruseObserverImpl() :
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overuse_(0),
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normaluse_(0) {}
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virtual ~CpuOveruseObserverImpl() {}
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void AdaptDown(AdaptReason) { ++overuse_; }
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void AdaptUp(AdaptReason) { ++normaluse_; }
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int overuse_;
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int normaluse_;
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};
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class OveruseFrameDetectorUnderTest : public OveruseFrameDetector {
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public:
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OveruseFrameDetectorUnderTest(const CpuOveruseOptions& options,
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AdaptationObserverInterface* overuse_observer,
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EncodedFrameObserver* encoder_timing,
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CpuOveruseMetricsObserver* metrics_observer)
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: OveruseFrameDetector(options,
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overuse_observer,
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encoder_timing,
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metrics_observer) {}
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~OveruseFrameDetectorUnderTest() {}
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using OveruseFrameDetector::CheckForOveruse;
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};
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class OveruseFrameDetectorTest : public ::testing::Test,
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public CpuOveruseMetricsObserver {
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protected:
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void SetUp() override {
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observer_.reset(new MockCpuOveruseObserver());
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options_.min_process_count = 0;
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ReinitializeOveruseDetector();
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}
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void ReinitializeOveruseDetector() {
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overuse_detector_.reset(new OveruseFrameDetectorUnderTest(
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options_, observer_.get(), nullptr, this));
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}
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void OnEncodedFrameTimeMeasured(int encode_time_ms,
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const CpuOveruseMetrics& metrics) override {
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metrics_ = metrics;
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}
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int InitialUsage() {
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return ((options_.low_encode_usage_threshold_percent +
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options_.high_encode_usage_threshold_percent) / 2.0f) + 0.5;
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}
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void InsertAndSendFramesWithInterval(int num_frames,
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int interval_us,
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int width,
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int height,
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int delay_us) {
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VideoFrame frame(I420Buffer::Create(width, height),
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webrtc::kVideoRotation_0, 0);
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uint32_t timestamp = 0;
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while (num_frames-- > 0) {
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frame.set_timestamp(timestamp);
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overuse_detector_->FrameCaptured(frame, rtc::TimeMicros());
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clock_.AdvanceTimeMicros(delay_us);
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overuse_detector_->FrameSent(timestamp, rtc::TimeMicros());
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clock_.AdvanceTimeMicros(interval_us - delay_us);
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timestamp += interval_us * 90 / 1000;
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}
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}
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void ForceUpdate(int width, int height) {
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// Insert one frame, wait a second and then put in another to force update
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// the usage. From the tests where these are used, adding another sample
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// doesn't affect the expected outcome (this is mainly to check initial
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// values and whether the overuse detector has been reset or not).
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InsertAndSendFramesWithInterval(2, rtc::kNumMicrosecsPerSec,
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width, height, kFrameIntervalUs);
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}
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void TriggerOveruse(int num_times) {
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const int kDelayUs = 32 * rtc::kNumMicrosecsPerMillisec;
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for (int i = 0; i < num_times; ++i) {
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InsertAndSendFramesWithInterval(
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1000, kFrameIntervalUs, kWidth, kHeight, kDelayUs);
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overuse_detector_->CheckForOveruse();
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}
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}
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void TriggerUnderuse() {
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const int kDelayUs1 = 5000;
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const int kDelayUs2 = 6000;
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InsertAndSendFramesWithInterval(
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1300, kFrameIntervalUs, kWidth, kHeight, kDelayUs1);
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InsertAndSendFramesWithInterval(
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1, kFrameIntervalUs, kWidth, kHeight, kDelayUs2);
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overuse_detector_->CheckForOveruse();
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}
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int UsagePercent() { return metrics_.encode_usage_percent; }
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int64_t OveruseProcessingTimeLimitForFramerate(int fps) const {
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int64_t frame_interval = rtc::kNumMicrosecsPerSec / fps;
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int64_t max_processing_time_us =
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(frame_interval * options_.high_encode_usage_threshold_percent) / 100;
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return max_processing_time_us;
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}
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int64_t UnderuseProcessingTimeLimitForFramerate(int fps) const {
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int64_t frame_interval = rtc::kNumMicrosecsPerSec / fps;
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int64_t max_processing_time_us =
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(frame_interval * options_.low_encode_usage_threshold_percent) / 100;
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return max_processing_time_us;
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}
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CpuOveruseOptions options_;
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rtc::ScopedFakeClock clock_;
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std::unique_ptr<MockCpuOveruseObserver> observer_;
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std::unique_ptr<OveruseFrameDetectorUnderTest> overuse_detector_;
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CpuOveruseMetrics metrics_;
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static const auto reason_ = AdaptationObserverInterface::AdaptReason::kCpu;
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};
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// UsagePercent() > high_encode_usage_threshold_percent => overuse.
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// UsagePercent() < low_encode_usage_threshold_percent => underuse.
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TEST_F(OveruseFrameDetectorTest, TriggerOveruse) {
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// usage > high => overuse
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(1);
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TriggerOveruse(options_.high_threshold_consecutive_count);
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}
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TEST_F(OveruseFrameDetectorTest, OveruseAndRecover) {
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// usage > high => overuse
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(1);
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TriggerOveruse(options_.high_threshold_consecutive_count);
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// usage < low => underuse
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EXPECT_CALL(*(observer_.get()), AdaptUp(reason_)).Times(testing::AtLeast(1));
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TriggerUnderuse();
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}
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TEST_F(OveruseFrameDetectorTest, OveruseAndRecoverWithNoObserver) {
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overuse_detector_.reset(new OveruseFrameDetectorUnderTest(
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options_, nullptr, nullptr, this));
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(0);
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TriggerOveruse(options_.high_threshold_consecutive_count);
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EXPECT_CALL(*(observer_.get()), AdaptUp(reason_)).Times(0);
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TriggerUnderuse();
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}
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TEST_F(OveruseFrameDetectorTest, DoubleOveruseAndRecover) {
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(2);
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TriggerOveruse(options_.high_threshold_consecutive_count);
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TriggerOveruse(options_.high_threshold_consecutive_count);
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EXPECT_CALL(*(observer_.get()), AdaptUp(reason_)).Times(testing::AtLeast(1));
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TriggerUnderuse();
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}
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TEST_F(OveruseFrameDetectorTest, TriggerUnderuseWithMinProcessCount) {
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const int kProcessIntervalUs = 5 * rtc::kNumMicrosecsPerSec;
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options_.min_process_count = 1;
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CpuOveruseObserverImpl overuse_observer;
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overuse_detector_.reset(new OveruseFrameDetectorUnderTest(
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options_, &overuse_observer, nullptr, this));
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InsertAndSendFramesWithInterval(
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1200, kFrameIntervalUs, kWidth, kHeight, kProcessTimeUs);
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overuse_detector_->CheckForOveruse();
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EXPECT_EQ(0, overuse_observer.normaluse_);
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clock_.AdvanceTimeMicros(kProcessIntervalUs);
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overuse_detector_->CheckForOveruse();
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EXPECT_EQ(1, overuse_observer.normaluse_);
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}
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TEST_F(OveruseFrameDetectorTest, ConstantOveruseGivesNoNormalUsage) {
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EXPECT_CALL(*(observer_.get()), AdaptUp(reason_)).Times(0);
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(64);
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for (size_t i = 0; i < 64; ++i) {
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TriggerOveruse(options_.high_threshold_consecutive_count);
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}
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}
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TEST_F(OveruseFrameDetectorTest, ConsecutiveCountTriggersOveruse) {
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(1);
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options_.high_threshold_consecutive_count = 2;
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ReinitializeOveruseDetector();
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TriggerOveruse(2);
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}
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TEST_F(OveruseFrameDetectorTest, IncorrectConsecutiveCountTriggersNoOveruse) {
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(0);
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options_.high_threshold_consecutive_count = 2;
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ReinitializeOveruseDetector();
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TriggerOveruse(1);
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}
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TEST_F(OveruseFrameDetectorTest, ProcessingUsage) {
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InsertAndSendFramesWithInterval(
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1000, kFrameIntervalUs, kWidth, kHeight, kProcessTimeUs);
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EXPECT_EQ(kProcessTimeUs * 100 / kFrameIntervalUs, UsagePercent());
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}
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TEST_F(OveruseFrameDetectorTest, ResetAfterResolutionChange) {
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ForceUpdate(kWidth, kHeight);
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EXPECT_EQ(InitialUsage(), UsagePercent());
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InsertAndSendFramesWithInterval(
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1000, kFrameIntervalUs, kWidth, kHeight, kProcessTimeUs);
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EXPECT_NE(InitialUsage(), UsagePercent());
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// Verify reset (with new width/height).
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ForceUpdate(kWidth, kHeight + 1);
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EXPECT_EQ(InitialUsage(), UsagePercent());
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}
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TEST_F(OveruseFrameDetectorTest, ResetAfterFrameTimeout) {
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ForceUpdate(kWidth, kHeight);
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EXPECT_EQ(InitialUsage(), UsagePercent());
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InsertAndSendFramesWithInterval(
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1000, kFrameIntervalUs, kWidth, kHeight, kProcessTimeUs);
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EXPECT_NE(InitialUsage(), UsagePercent());
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InsertAndSendFramesWithInterval(
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2, options_.frame_timeout_interval_ms *
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rtc::kNumMicrosecsPerMillisec, kWidth, kHeight, kProcessTimeUs);
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EXPECT_NE(InitialUsage(), UsagePercent());
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// Verify reset.
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InsertAndSendFramesWithInterval(
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2, (options_.frame_timeout_interval_ms + 1) *
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rtc::kNumMicrosecsPerMillisec, kWidth, kHeight, kProcessTimeUs);
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ForceUpdate(kWidth, kHeight);
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EXPECT_EQ(InitialUsage(), UsagePercent());
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}
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TEST_F(OveruseFrameDetectorTest, MinFrameSamplesBeforeUpdating) {
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options_.min_frame_samples = 40;
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ReinitializeOveruseDetector();
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InsertAndSendFramesWithInterval(
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40, kFrameIntervalUs, kWidth, kHeight, kProcessTimeUs);
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EXPECT_EQ(InitialUsage(), UsagePercent());
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// Pass time far enough to digest all previous samples.
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clock_.AdvanceTimeMicros(rtc::kNumMicrosecsPerSec);
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InsertAndSendFramesWithInterval(1, kFrameIntervalUs, kWidth, kHeight,
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kProcessTimeUs);
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// The last sample has not been processed here.
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EXPECT_EQ(InitialUsage(), UsagePercent());
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// Pass time far enough to digest all previous samples, 41 in total.
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clock_.AdvanceTimeMicros(rtc::kNumMicrosecsPerSec);
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InsertAndSendFramesWithInterval(
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1, kFrameIntervalUs, kWidth, kHeight, kProcessTimeUs);
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EXPECT_NE(InitialUsage(), UsagePercent());
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}
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TEST_F(OveruseFrameDetectorTest, InitialProcessingUsage) {
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ForceUpdate(kWidth, kHeight);
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EXPECT_EQ(InitialUsage(), UsagePercent());
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}
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TEST_F(OveruseFrameDetectorTest, MeasuresMultipleConcurrentSamples) {
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_))
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.Times(testing::AtLeast(1));
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static const int kIntervalUs = 33 * rtc::kNumMicrosecsPerMillisec;
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static const size_t kNumFramesEncodingDelay = 3;
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VideoFrame frame(I420Buffer::Create(kWidth, kHeight),
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webrtc::kVideoRotation_0, 0);
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for (size_t i = 0; i < 1000; ++i) {
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// Unique timestamps.
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frame.set_timestamp(static_cast<uint32_t>(i));
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overuse_detector_->FrameCaptured(frame, rtc::TimeMicros());
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clock_.AdvanceTimeMicros(kIntervalUs);
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if (i > kNumFramesEncodingDelay) {
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overuse_detector_->FrameSent(
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static_cast<uint32_t>(i - kNumFramesEncodingDelay),
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rtc::TimeMicros());
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}
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overuse_detector_->CheckForOveruse();
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}
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}
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TEST_F(OveruseFrameDetectorTest, UpdatesExistingSamples) {
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// >85% encoding time should trigger overuse.
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_))
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.Times(testing::AtLeast(1));
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static const int kIntervalUs = 33 * rtc::kNumMicrosecsPerMillisec;
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static const int kDelayUs = 30 * rtc::kNumMicrosecsPerMillisec;
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VideoFrame frame(I420Buffer::Create(kWidth, kHeight),
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webrtc::kVideoRotation_0, 0);
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uint32_t timestamp = 0;
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for (size_t i = 0; i < 1000; ++i) {
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frame.set_timestamp(timestamp);
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overuse_detector_->FrameCaptured(frame, rtc::TimeMicros());
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// Encode and send first parts almost instantly.
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clock_.AdvanceTimeMicros(rtc::kNumMicrosecsPerMillisec);
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overuse_detector_->FrameSent(timestamp, rtc::TimeMicros());
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// Encode heavier part, resulting in >85% usage total.
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clock_.AdvanceTimeMicros(kDelayUs - rtc::kNumMicrosecsPerMillisec);
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overuse_detector_->FrameSent(timestamp, rtc::TimeMicros());
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clock_.AdvanceTimeMicros(kIntervalUs - kDelayUs);
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timestamp += kIntervalUs * 90 / 1000;
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overuse_detector_->CheckForOveruse();
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}
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}
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TEST_F(OveruseFrameDetectorTest, RunOnTqNormalUsage) {
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rtc::TaskQueue queue("OveruseFrameDetectorTestQueue");
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rtc::Event event(false, false);
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queue.PostTask([this, &event] {
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overuse_detector_->StartCheckForOveruse();
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event.Set();
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});
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event.Wait(rtc::Event::kForever);
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// Expect NormalUsage(). When called, stop the |overuse_detector_| and then
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// set |event| to end the test.
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EXPECT_CALL(*(observer_.get()), AdaptUp(reason_))
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.WillOnce(InvokeWithoutArgs([this, &event] {
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overuse_detector_->StopCheckForOveruse();
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event.Set();
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}));
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queue.PostTask([this] {
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const int kDelayUs1 = 5 * rtc::kNumMicrosecsPerMillisec;
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const int kDelayUs2 = 6 * rtc::kNumMicrosecsPerMillisec;
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InsertAndSendFramesWithInterval(1300, kFrameIntervalUs, kWidth, kHeight,
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kDelayUs1);
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InsertAndSendFramesWithInterval(1, kFrameIntervalUs, kWidth, kHeight,
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kDelayUs2);
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});
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EXPECT_TRUE(event.Wait(10000));
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}
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TEST_F(OveruseFrameDetectorTest, MaxIntervalScalesWithFramerate) {
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const int kCapturerMaxFrameRate = 30;
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const int kEncodeMaxFrameRate = 20; // Maximum fps the encoder can sustain.
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// Trigger overuse.
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int64_t frame_interval_us = rtc::kNumMicrosecsPerSec / kCapturerMaxFrameRate;
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// Processing time just below over use limit given kEncodeMaxFrameRate.
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int64_t processing_time_us =
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(98 * OveruseProcessingTimeLimitForFramerate(kEncodeMaxFrameRate)) / 100;
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(1);
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for (int i = 0; i < options_.high_threshold_consecutive_count; ++i) {
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InsertAndSendFramesWithInterval(1200, frame_interval_us, kWidth, kHeight,
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processing_time_us);
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overuse_detector_->CheckForOveruse();
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}
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// Simulate frame rate reduction and normal usage.
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frame_interval_us = rtc::kNumMicrosecsPerSec / kEncodeMaxFrameRate;
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overuse_detector_->OnTargetFramerateUpdated(kEncodeMaxFrameRate);
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(0);
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for (int i = 0; i < options_.high_threshold_consecutive_count; ++i) {
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InsertAndSendFramesWithInterval(1200, frame_interval_us, kWidth, kHeight,
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processing_time_us);
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overuse_detector_->CheckForOveruse();
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}
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// Reduce processing time to trigger underuse.
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processing_time_us =
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(98 * UnderuseProcessingTimeLimitForFramerate(kEncodeMaxFrameRate)) / 100;
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EXPECT_CALL(*(observer_.get()), AdaptUp(reason_)).Times(1);
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InsertAndSendFramesWithInterval(1200, frame_interval_us, kWidth, kHeight,
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processing_time_us);
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overuse_detector_->CheckForOveruse();
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}
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TEST_F(OveruseFrameDetectorTest, RespectsMinFramerate) {
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const int kMinFrameRate = 7; // Minimum fps allowed by current detector impl.
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overuse_detector_->OnTargetFramerateUpdated(kMinFrameRate);
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// Normal usage just at the limit.
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int64_t frame_interval_us = rtc::kNumMicrosecsPerSec / kMinFrameRate;
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// Processing time just below over use limit given kEncodeMaxFrameRate.
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int64_t processing_time_us =
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(98 * OveruseProcessingTimeLimitForFramerate(kMinFrameRate)) / 100;
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(0);
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for (int i = 0; i < options_.high_threshold_consecutive_count; ++i) {
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InsertAndSendFramesWithInterval(1200, frame_interval_us, kWidth, kHeight,
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processing_time_us);
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overuse_detector_->CheckForOveruse();
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}
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// Over the limit to overuse.
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processing_time_us =
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(102 * OveruseProcessingTimeLimitForFramerate(kMinFrameRate)) / 100;
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(1);
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for (int i = 0; i < options_.high_threshold_consecutive_count; ++i) {
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InsertAndSendFramesWithInterval(1200, frame_interval_us, kWidth, kHeight,
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processing_time_us);
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overuse_detector_->CheckForOveruse();
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}
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// Reduce input frame rate. Should still trigger overuse.
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overuse_detector_->OnTargetFramerateUpdated(kMinFrameRate - 1);
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(1);
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for (int i = 0; i < options_.high_threshold_consecutive_count; ++i) {
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InsertAndSendFramesWithInterval(1200, frame_interval_us, kWidth, kHeight,
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processing_time_us);
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overuse_detector_->CheckForOveruse();
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}
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}
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TEST_F(OveruseFrameDetectorTest, LimitsMaxFrameInterval) {
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const int kMaxFrameRate = 20;
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overuse_detector_->OnTargetFramerateUpdated(kMaxFrameRate);
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int64_t frame_interval_us = rtc::kNumMicrosecsPerSec / kMaxFrameRate;
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// Maximum frame interval allowed is 35% above ideal.
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int64_t max_frame_interval_us = (135 * frame_interval_us) / 100;
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// Maximum processing time, without triggering overuse, allowed with the above
|
|
// frame interval.
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int64_t max_processing_time_us =
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(max_frame_interval_us * options_.high_encode_usage_threshold_percent) /
|
|
100;
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|
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// Processing time just below overuse limit given kMaxFrameRate.
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int64_t processing_time_us = (98 * max_processing_time_us) / 100;
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EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(0);
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|
for (int i = 0; i < options_.high_threshold_consecutive_count; ++i) {
|
|
InsertAndSendFramesWithInterval(1200, max_frame_interval_us, kWidth,
|
|
kHeight, processing_time_us);
|
|
overuse_detector_->CheckForOveruse();
|
|
}
|
|
|
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// Go above limit, trigger overuse.
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|
processing_time_us = (102 * max_processing_time_us) / 100;
|
|
EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(1);
|
|
for (int i = 0; i < options_.high_threshold_consecutive_count; ++i) {
|
|
InsertAndSendFramesWithInterval(1200, max_frame_interval_us, kWidth,
|
|
kHeight, processing_time_us);
|
|
overuse_detector_->CheckForOveruse();
|
|
}
|
|
|
|
// Increase frame interval, should still trigger overuse.
|
|
max_frame_interval_us *= 2;
|
|
EXPECT_CALL(*(observer_.get()), AdaptDown(reason_)).Times(1);
|
|
for (int i = 0; i < options_.high_threshold_consecutive_count; ++i) {
|
|
InsertAndSendFramesWithInterval(1200, max_frame_interval_us, kWidth,
|
|
kHeight, processing_time_us);
|
|
overuse_detector_->CheckForOveruse();
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|
}
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|
}
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} // namespace webrtc
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