EventThread是Listener, // =>computeListenerNextEventTimeLocked targetTime = computeNextEventTimeLocked(now); //休眠 if(now < targetTime) { mCond.waitRelative(mMutex, targetrTime-now); } //之后被vsync信号唤醒,获取callback callbackInvacations = gather...
//surfaceflinger/DispSync.cppclassDispSyncThread :publicThread {virtualboolthreadLoop() {//计算最近的eventThread的时间,EventThread是Listener,//=>computeListenerNextEventTimeLockedtargetTime =computeNextEventTimeLocked(now);//休眠if(now <targetTime) { mCond.waitRelative(mMutex, targetrTime-now); }/...
if (err != NO_ERROR) { ALOGE("errorwaiting for new events: %s (%d)", strerror(-err),err); return false; } continue; } 。。。 if (isWakeup) { mWakeupLatency =((mWakeupLatency * 63) + (now - targetTime))/ 64; if (mWakeupLatency >500000) { // Don't correct bymore than ...
void VsyncWaiterAndroid::ConsumePendingCallback( jlong java_baton, fml::TimePoint frame_start_time, fml::TimePoint frame_target_time) { //... shared_this->FireCallback(frame_start_time, frame_target_time); } void VsyncWaiter::FireCallback(fml::TimePoint frame_start_time, fml::TimePoin...
longframeTimeNanos,longframeTargetTimeNanos,longcookie); publicinterfaceAsyncWaitForVsyncDelegate{ voidasyncWaitForVsync(finallongcookie); } } 对于安卓仔来说,上面代码中熟悉的系统 API 比较多,所以我们先回到纯 Android 平台。老司机都知道,现代 Android ...
// targetTime指示mEventListeners集合中最早要发送虚拟VSync的时间点 targetTime = computeNextEventTimeLocked(now); if (now < targetTime) { if (targetTime == INT64_MAX) { // sfVsyncSrc, appVsyncSrc都对此个vsync没兴趣 err = mCond.wait(mMutex); } else { // sfVsyncSrc, appVsyncSrc...
); } } //java端调用native实现 public static native void nativeOnVsync( long frameTimeNanos, long frameTargetTimeNanos, long cookie); public interface AsyncWaitForVsyncDelegate { void asyncWaitForVsync(final long cookie); } } 对于安卓仔来说,上面代码中熟悉的系统 API 比较多,所以我们先回到纯...
(dpy, win, &ust, &msc, &sbc); }intwaitForMscOML(inttarget_msc,intdivisor,intremainder) {returnglXWaitForMscOML(dpy, win, target_msc, divisor,remainder, &ust, &msc, &sbc); }//---voidinitSyncVars() {int32_ta0, b0;glXGetMscRateOML(dpy, xdr, &a0, &b0);//double rate_hz =...
然后调用HWComposer对象mHwc的fbPost函数输出,fbPost函数最后通过调用Gralloc模块的post函数来输出图像。这一部分我们在Android SurfaceFlinger 学习之路(一)—-Android图形显示之HAL层Gralloc模块实现分析过了,可以查看这个链接。 3)创建DisplayDevice对象,用来描述显示设备: ...
Flutter 系列文章连载～《Flutter Android 工程结构及应用层编译源码深入分析》《Flutter 命令本质之 Flutter tools 机制源码深入分析》《Flutter 的 runApp ...