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/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#undef LOG_TAG
#define LOG_TAG "LayerInfoTest"
#include <gtest/gtest.h>
#include <scheduler/Fps.h>
#include <common/test/FlagUtils.h>
#include "FpsOps.h"
#include "Scheduler/LayerHistory.h"
#include "Scheduler/LayerInfo.h"
#include "TestableScheduler.h"
#include "TestableSurfaceFlinger.h"
#include "mock/MockSchedulerCallback.h"
#include <com_android_graphics_surfaceflinger_flags.h>
namespace android::scheduler {
using android::mock::createDisplayMode;
class LayerInfoTest : public testing::Test {
protected:
using FrameTimeData = LayerInfo::FrameTimeData;
static constexpr Fps LO_FPS = 30_Hz;
static constexpr Fps HI_FPS = 90_Hz;
LayerInfoTest() { mFlinger.resetScheduler(mScheduler); }
void setFrameTimes(const std::deque<FrameTimeData>& frameTimes) {
layerInfo.mFrameTimes = frameTimes;
}
void setLastRefreshRate(Fps fps) {
layerInfo.mLastRefreshRate.reported = fps;
layerInfo.mLastRefreshRate.calculated = fps;
}
auto calculateAverageFrameTime() { return layerInfo.calculateAverageFrameTime(); }
LayerInfo layerInfo{"TestLayerInfo", 0, LayerHistory::LayerVoteType::Heuristic};
std::shared_ptr<RefreshRateSelector> mSelector =
std::make_shared<RefreshRateSelector>(makeModes(createDisplayMode(DisplayModeId(0),
LO_FPS),
createDisplayMode(DisplayModeId(1),
HI_FPS)),
DisplayModeId(0));
mock::SchedulerCallback mSchedulerCallback;
TestableSurfaceFlinger mFlinger;
TestableScheduler* mScheduler = new TestableScheduler(mSelector, mFlinger, mSchedulerCallback);
};
namespace {
using namespace com::android::graphics::surfaceflinger;
TEST_F(LayerInfoTest, prefersPresentTime) {
std::deque<FrameTimeData> frameTimes;
constexpr auto kExpectedFps = 50_Hz;
constexpr auto kPeriod = kExpectedFps.getPeriodNsecs();
constexpr int kNumFrames = 10;
for (int i = 1; i <= kNumFrames; i++) {
frameTimes.push_back(FrameTimeData{.presentTime = kPeriod * i,
.queueTime = 0,
.pendingModeChange = false});
}
setFrameTimes(frameTimes);
const auto averageFrameTime = calculateAverageFrameTime();
ASSERT_TRUE(averageFrameTime.has_value());
ASSERT_EQ(kExpectedFps, Fps::fromPeriodNsecs(*averageFrameTime));
}
TEST_F(LayerInfoTest, fallbacksToQueueTimeIfNoPresentTime) {
std::deque<FrameTimeData> frameTimes;
constexpr auto kExpectedFps = 50_Hz;
constexpr auto kPeriod = kExpectedFps.getPeriodNsecs();
constexpr int kNumFrames = 10;
for (int i = 1; i <= kNumFrames; i++) {
frameTimes.push_back(FrameTimeData{.presentTime = 0,
.queueTime = kPeriod * i,
.pendingModeChange = false});
}
setFrameTimes(frameTimes);
setLastRefreshRate(20_Hz); // Set to some valid value.
const auto averageFrameTime = calculateAverageFrameTime();
ASSERT_TRUE(averageFrameTime.has_value());
ASSERT_EQ(kExpectedFps, Fps::fromPeriodNsecs(*averageFrameTime));
}
TEST_F(LayerInfoTest, returnsNulloptIfThereWasConfigChange) {
std::deque<FrameTimeData> frameTimesWithoutConfigChange;
const auto period = (50_Hz).getPeriodNsecs();
constexpr int kNumFrames = 10;
for (int i = 1; i <= kNumFrames; i++) {
frameTimesWithoutConfigChange.push_back(FrameTimeData{.presentTime = period * i,
.queueTime = period * i,
.pendingModeChange = false});
}
setFrameTimes(frameTimesWithoutConfigChange);
ASSERT_TRUE(calculateAverageFrameTime().has_value());
{
// Config change in the first record
auto frameTimes = frameTimesWithoutConfigChange;
frameTimes[0].pendingModeChange = true;
setFrameTimes(frameTimes);
ASSERT_FALSE(calculateAverageFrameTime().has_value());
}
{
// Config change in the last record
auto frameTimes = frameTimesWithoutConfigChange;
frameTimes[frameTimes.size() - 1].pendingModeChange = true;
setFrameTimes(frameTimes);
ASSERT_FALSE(calculateAverageFrameTime().has_value());
}
{
// Config change in the middle
auto frameTimes = frameTimesWithoutConfigChange;
frameTimes[frameTimes.size() / 2].pendingModeChange = true;
setFrameTimes(frameTimes);
ASSERT_FALSE(calculateAverageFrameTime().has_value());
}
}
// A frame can be recorded twice with very close presentation or queue times.
// Make sure that this doesn't influence the calculated average FPS.
TEST_F(LayerInfoTest, ignoresSmallPeriods) {
std::deque<FrameTimeData> frameTimes;
constexpr auto kExpectedFps = 50_Hz;
constexpr auto kExpectedPeriod = kExpectedFps.getPeriodNsecs();
constexpr auto kSmallPeriod = (250_Hz).getPeriodNsecs();
constexpr int kNumIterations = 10;
for (int i = 1; i <= kNumIterations; i++) {
frameTimes.push_back(FrameTimeData{.presentTime = kExpectedPeriod * i,
.queueTime = 0,
.pendingModeChange = false});
// A duplicate frame
frameTimes.push_back(FrameTimeData{.presentTime = kExpectedPeriod * i + kSmallPeriod,
.queueTime = 0,
.pendingModeChange = false});
}
setFrameTimes(frameTimes);
const auto averageFrameTime = calculateAverageFrameTime();
ASSERT_TRUE(averageFrameTime.has_value());
ASSERT_EQ(kExpectedFps, Fps::fromPeriodNsecs(*averageFrameTime));
}
// There may be a big period of time between two frames. Make sure that
// this doesn't influence the calculated average FPS.
TEST_F(LayerInfoTest, ignoresLargePeriods) {
std::deque<FrameTimeData> frameTimes;
constexpr auto kExpectedFps = 50_Hz;
constexpr auto kExpectedPeriod = kExpectedFps.getPeriodNsecs();
constexpr auto kLargePeriod = (9_Hz).getPeriodNsecs();
auto record = [&](nsecs_t time) {
frameTimes.push_back(
FrameTimeData{.presentTime = time, .queueTime = 0, .pendingModeChange = false});
};
auto time = kExpectedPeriod; // Start with non-zero time.
record(time);
time += kLargePeriod;
record(time);
constexpr int kNumIterations = 10;
for (int i = 1; i <= kNumIterations; i++) {
time += kExpectedPeriod;
record(time);
}
setFrameTimes(frameTimes);
const auto averageFrameTime = calculateAverageFrameTime();
ASSERT_TRUE(averageFrameTime.has_value());
ASSERT_EQ(kExpectedFps, Fps::fromPeriodNsecs(*averageFrameTime));
}
TEST_F(LayerInfoTest, getRefreshRateVote_explicitVote) {
LayerInfo::LayerVote vote = {.type = LayerHistory::LayerVoteType::ExplicitDefault,
.fps = 20_Hz};
layerInfo.setLayerVote(vote);
auto actualVotes =
layerInfo.getRefreshRateVote(*mScheduler->refreshRateSelector(), systemTime());
ASSERT_EQ(actualVotes.size(), 1u);
ASSERT_EQ(actualVotes[0].type, vote.type);
ASSERT_EQ(actualVotes[0].fps, vote.fps);
ASSERT_EQ(actualVotes[0].seamlessness, vote.seamlessness);
ASSERT_EQ(actualVotes[0].category, vote.category);
}
TEST_F(LayerInfoTest, getRefreshRateVote_explicitVoteWithCategory) {
LayerInfo::LayerVote vote = {.type = LayerHistory::LayerVoteType::ExplicitDefault,
.fps = 20_Hz,
.category = FrameRateCategory::High,
.categorySmoothSwitchOnly = true};
layerInfo.setLayerVote(vote);
auto actualVotes =
layerInfo.getRefreshRateVote(*mScheduler->refreshRateSelector(), systemTime());
ASSERT_EQ(actualVotes.size(), 2u);
ASSERT_EQ(actualVotes[0].type, LayerHistory::LayerVoteType::ExplicitCategory);
ASSERT_EQ(actualVotes[0].category, vote.category);
ASSERT_TRUE(actualVotes[0].categorySmoothSwitchOnly);
ASSERT_EQ(actualVotes[1].type, vote.type);
ASSERT_EQ(actualVotes[1].fps, vote.fps);
ASSERT_EQ(actualVotes[1].seamlessness, vote.seamlessness);
ASSERT_EQ(actualVotes[1].category, FrameRateCategory::Default);
ASSERT_TRUE(actualVotes[1].categorySmoothSwitchOnly);
}
TEST_F(LayerInfoTest, getRefreshRateVote_explicitCategory) {
LayerInfo::LayerVote vote = {.type = LayerHistory::LayerVoteType::ExplicitDefault,
.category = FrameRateCategory::High};
layerInfo.setLayerVote(vote);
auto actualVotes =
layerInfo.getRefreshRateVote(*mScheduler->refreshRateSelector(), systemTime());
ASSERT_EQ(actualVotes.size(), 1u);
ASSERT_EQ(actualVotes[0].type, LayerHistory::LayerVoteType::ExplicitCategory);
ASSERT_EQ(actualVotes[0].category, vote.category);
ASSERT_EQ(actualVotes[0].fps, 0_Hz);
}
TEST_F(LayerInfoTest, getRefreshRateVote_categoryNoPreference) {
LayerInfo::LayerVote vote = {.type = LayerHistory::LayerVoteType::ExplicitDefault,
.category = FrameRateCategory::NoPreference};
layerInfo.setLayerVote(vote);
auto actualVotes =
layerInfo.getRefreshRateVote(*mScheduler->refreshRateSelector(), systemTime());
ASSERT_EQ(actualVotes.size(), 1u);
ASSERT_EQ(actualVotes[0].type, LayerHistory::LayerVoteType::ExplicitCategory);
ASSERT_EQ(actualVotes[0].category, vote.category);
ASSERT_EQ(actualVotes[0].fps, 0_Hz);
}
TEST_F(LayerInfoTest, getRefreshRateVote_noData) {
LayerInfo::LayerVote vote = {
.type = LayerHistory::LayerVoteType::Heuristic,
};
layerInfo.setLayerVote(vote);
auto actualVotes =
layerInfo.getRefreshRateVote(*mScheduler->refreshRateSelector(), systemTime());
ASSERT_EQ(actualVotes.size(), 1u);
ASSERT_EQ(actualVotes[0].type, LayerHistory::LayerVoteType::Max);
ASSERT_EQ(actualVotes[0].fps, vote.fps);
}
TEST_F(LayerInfoTest, isFrontBuffered) {
SET_FLAG_FOR_TEST(flags::vrr_config, true);
ASSERT_FALSE(layerInfo.isFrontBuffered());
LayerProps prop = {.isFrontBuffered = true};
layerInfo.setLastPresentTime(0, 0, LayerHistory::LayerUpdateType::Buffer, true, prop);
ASSERT_TRUE(layerInfo.isFrontBuffered());
prop.isFrontBuffered = false;
layerInfo.setLastPresentTime(0, 0, LayerHistory::LayerUpdateType::Buffer, true, prop);
ASSERT_FALSE(layerInfo.isFrontBuffered());
}
} // namespace
} // namespace android::scheduler
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