把时间戳加到图像的前几个像素,前三位是小时,分钟,秒,后两位是毫秒,因为毫秒是四位数
time_t t=time(NULL); std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds> tp = std::chrono::time_point_cast<std::chrono::milliseconds>(std::chrono::system_clock::now()); auto tmp = std::chrono::duration_cast<std::chrono::milliseconds>(tp.time_since_epoch()); std::time_t timestamp = tmp.count(); std::time_t milli = timestamp; int MS = milli % 1000; char H[3], M[3], S[3]; memset(H, 0, 3); memset(M, 0, 3); memset(S, 0, 3); strftime(H, sizeof(H), "%H", localtime(&t)); strftime(M, sizeof(H), "%M", localtime(&t)); strftime(S, sizeof(H), "%S", localtime(&t)); TestImg.data[0] = atoi(H); TestImg.data[1] = atoi(M); TestImg.data[2] = atoi(S); TestImg.data[3] = MS / 100; TestImg.data[4] = MS % 100;
时间就是17:26:21.917