93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
#ifdef MTK_VSYNC_HINT_SUPPORT
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#include "VSyncHinter.h"
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#include <cinttypes>
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#include <cstring>
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#include <dlfcn.h>
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#include <log/log.h>
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#include <stdlib.h>
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#include "vsync_hint/VsyncHintApi.h"
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namespace android {
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#undef LOG_TAG
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#define LOG_TAG "VSyncHinter"
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VSyncHinter& VSyncHinter::getInstance() {
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static VSyncHinter gInstance;
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return gInstance;
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}
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VSyncHinter::VSyncHinter() {
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typedef VsyncHintApi* (*createVsyncHintPrototype)();
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mVSyncHint = NULL;
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mVSyncHintHandle = dlopen("libvsync_hint.so", RTLD_LAZY);
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if (mVSyncHintHandle) {
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createVsyncHintPrototype createPtr = reinterpret_cast<createVsyncHintPrototype>(dlsym(mVSyncHintHandle, "createVsyncHint"));
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if (createPtr) {
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mVSyncHint = createPtr();
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if (!mVSyncHint) {
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ALOGW("Failed to create VSyncHint");
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}
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} else {
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ALOGW("Failed to get function: createVsyncHint");
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}
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} else {
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ALOGW("Failed to load libvsync_hint.so");
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}
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mLastNotifyVsync = 0;
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mLastPeriod = 0;
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}
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VSyncHinter::~VSyncHinter() {
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if (mVSyncHint) {
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delete mVSyncHint;
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}
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if (mVSyncHintHandle) {
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dlclose(mVSyncHintHandle);
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}
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}
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void VSyncHinter::fillVSyncInfo(VSyncInfo& info, const char* name) {
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if (!strcmp(name, "sf")) {
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info.mVSyncType = VsyncHintApi::VSYNC_TYPE_SF;
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} else if (!strcmp(name, "app")) {
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info.mVSyncType = VsyncHintApi::VSYNC_TYPE_APP;
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} else {
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info.mVSyncType = VsyncHintApi::VSYNC_TYPE_UNKNOWN;
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}
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}
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void VSyncHinter::onDispSyncEvent(VSyncInfo& info, nsecs_t period) {
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if (!mVSyncHint) {
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return;
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}
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mVSyncHint->notifyVsync(info.mVSyncType, period);
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}
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void VSyncHinter::notifyVsyncPeriod(nsecs_t period) {
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if (!mVSyncHint) {
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return;
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}
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nsecs_t now = systemTime();
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nsecs_t diff = now - mLastNotifyVsync;
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float ratio = static_cast<float>(abs(mLastPeriod - period)) / static_cast<float>(mLastPeriod);
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if (mLastNotifyVsync == 0 ||
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mLastPeriod == 0 ||
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diff > 300000000 || /* 300ms */
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ratio > 0.01) { /* 1% */
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mVSyncHint->notifyVsyncPeriod(period);
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// ALOGI("notifyVsyncPeriod notify");
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mLastNotifyVsync = now;
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mLastPeriod = period;
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}
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//ALOGI("notifyVsyncPeriod mLastNotifyVsync=%" PRId64 ", mLastPeriod=%" PRId64 ", period=%" PRId64 ", diff=%" PRId64 ", ratio=%f",
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// mLastNotifyVsync, mLastPeriod, period, diff, ratio);
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}
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} // namespace android
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#endif
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