C++ (Cpp) DisplayEventReceiver::requestNextVsync示例

示例#1

文件： android_view_DisplayEventReceiver.cpp 项目： Seethoven-app/platform_frameworks_base

status_t NativeDisplayEventReceiver::scheduleVsync() {
    if (!mWaitingForVsync) {
        ALOGV("receiver %p ~ Scheduling vsync.", this);

        // Drain all pending events.
        nsecs_t vsyncTimestamp;
        int32_t vsyncDisplayId;
        uint32_t vsyncCount;
        processPendingEvents(&vsyncTimestamp, &vsyncDisplayId, &vsyncCount);

        status_t status = mReceiver.requestNextVsync();
        if (status) {
            ALOGW("Failed to request next vsync, status=%d", status);
            return status;
        }

        mWaitingForVsync = true;
    }
    return OK;
}