112 lines
3.0 KiB
C++
112 lines
3.0 KiB
C++
/*
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* Copyright (C) 2024 Amlogic Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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*
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http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <sys/prctl.h>
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#include "DisplayThread.h"
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#include "DispAdptLog.h"
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DisplayThread::DisplayThread(MesonDisplay *display)
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{
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int32_t ret;
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mDisplay = display;
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mExit = false;
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needRefresh = false;
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snprintf(mName, 64, "DisplayThread-%d", mDisplay->getDisplayId());
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ret = pthread_create(&mThread, NULL, DisplayThreadMain, (void *)this);
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if (ret) {
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DISPLAY_LOGE("%s %s, failed to create VideoTunnel CmdThread: %s",
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mName, __func__, strerror(ret));
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}
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}
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DisplayThread::~DisplayThread()
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{
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mExit = true;
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pthread_join(mThread, NULL);
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}
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void DisplayThread::onVsync(int64_t timestamp, uint32_t vsyncPeriodNanos)
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{
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std::unique_lock<std::mutex> stateLock(mMutex);
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needRefresh = true;
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stateLock.unlock();
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mCondition.notify_all();
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}
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void DisplayThread::onFrameAvailableForGameMode()
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{
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std::unique_lock<std::mutex> stateLock(mMutex);
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needRefresh = true;
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stateLock.unlock();
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mCondition.notify_all();
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}
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void* DisplayThread::DisplayThreadMain(void *data) {
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DisplayThread* pThis = (DisplayThread*)data;
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prctl(PR_SET_NAME, "displayThread");
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// set videotunnel thread to SCHED_FIFO to minimize jitter
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struct sched_param param = {0};
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param.sched_priority = sched_get_priority_max(SCHED_FIFO);
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if (sched_setscheduler(0, SCHED_FIFO, ¶m) != 0) {
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DISPLAY_LOGE("%s %s, Couldn't set SCHED_FIFO for videotunnelthread",
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pThis->mName, __func__);
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}
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while (true) {
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if (pThis->mExit) {
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DISPLAY_LOGD("%s %s, VtDisplayThread exit video tunnel loop",
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pThis->mName, __func__);
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pthread_exit(0);
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return NULL;
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}
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pThis->handleDisplay();
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}
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}
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void DisplayThread::handleDisplay()
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{
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int32_t outPresentFence = -1;
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long long time;
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std::unique_lock<std::mutex> stateLock(mMutex);
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while (!needRefresh) {
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mCondition.wait(stateLock);
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}
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needRefresh = false;
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stateLock.unlock();
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// run display
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do {
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mDisplay->setLayersPresentTime();
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if (mDisplay->handleDisplayConnection()) {
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time = DispAdptGetCurrentTime();
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mDisplay->validateDisplay(NULL, NULL);
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mDisplay->presentDisplay(&outPresentFence);
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mDisplay->setVsyncDelayLatency(DispAdptGetCurrentTime() - time);
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if (outPresentFence >= 0)
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close(outPresentFence);
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}
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mDisplay->releaseLayers();
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} while (mDisplay->newGameBuffer());
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}
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