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/*
* Copyright (C) 2022 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.
*/
#include <gtest/gtest.h>
#include <gui/DisplayEventReceiver.h>
#include <gui/ISurfaceComposer.h>
#include <gui/SurfaceComposerClient.h>
#include <sys/epoll.h>
#include <algorithm>
namespace android {
namespace {
using FrameRateOverride = DisplayEventReceiver::Event::FrameRateOverride;
class SetFrameRateOverrideTest : public ::testing::Test {
protected:
void SetUp() override {
const ISurfaceComposer::VsyncSource vsyncSource = ISurfaceComposer::eVsyncSourceApp;
const ISurfaceComposer::EventRegistrationFlags eventRegistration = {
ISurfaceComposer::EventRegistration::frameRateOverride};
mDisplayEventReceiver =
std::make_unique<DisplayEventReceiver>(vsyncSource, eventRegistration);
EXPECT_EQ(NO_ERROR, mDisplayEventReceiver->initCheck());
mEpollFd = epoll_create1(EPOLL_CLOEXEC);
EXPECT_GT(mEpollFd, 1);
epoll_event event;
event.events = EPOLLIN;
EXPECT_EQ(0, epoll_ctl(mEpollFd, EPOLL_CTL_ADD, mDisplayEventReceiver->getFd(), &event));
}
void TearDown() override { close(mEpollFd); }
void setFrameRateAndListenEvents(uid_t uid, float frameRate) {
status_t ret = SurfaceComposerClient::setOverrideFrameRate(uid, frameRate);
ASSERT_EQ(NO_ERROR, ret);
DisplayEventReceiver::Event event;
bool isOverrideFlushReceived = false;
mFrameRateOverrides.clear();
epoll_event epollEvent;
while (epoll_wait(mEpollFd, &epollEvent, 1, 1000) > 0) {
while (mDisplayEventReceiver->getEvents(&event, 1) > 0) {
if (event.header.type == DisplayEventReceiver::DISPLAY_EVENT_FRAME_RATE_OVERRIDE) {
mFrameRateOverrides.emplace_back(event.frameRateOverride);
}
if (event.header.type ==
DisplayEventReceiver::DISPLAY_EVENT_FRAME_RATE_OVERRIDE_FLUSH) {
isOverrideFlushReceived = true;
}
}
if (isOverrideFlushReceived) break;
}
}
std::unique_ptr<DisplayEventReceiver> mDisplayEventReceiver;
std::vector<FrameRateOverride> mFrameRateOverrides;
int mEpollFd;
};
TEST_F(SetFrameRateOverrideTest, SetFrameRateOverrideCall) {
uid_t uid = getuid();
float frameRate = 30.0f;
setFrameRateAndListenEvents(uid, frameRate);
// check if the frame rate override we set exists
ASSERT_TRUE(std::find_if(mFrameRateOverrides.begin(), mFrameRateOverrides.end(),
[uid = uid, frameRate = frameRate](auto i) {
return uid == i.uid && frameRate == i.frameRateHz;
}) != mFrameRateOverrides.end());
// test removing frame rate override
frameRate = 0.0f;
setFrameRateAndListenEvents(uid, frameRate);
ASSERT_TRUE(std::find_if(mFrameRateOverrides.begin(), mFrameRateOverrides.end(),
[uid = uid, frameRate = frameRate](auto i) {
return uid == i.uid && frameRate == i.frameRateHz;
}) == mFrameRateOverrides.end());
}
} // namespace
} // namespace android
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