codes

从一个mpeg4视频文件中，抓取给定起始结束时间段内的图像，保存为jpeg格式，使用directshow实现(From a mpeg4 video file, the crawl a given time period starting the end of the image, save it as a jpeg format, the use of DirectShow realize)

实现Qt程序对excel表格数据的快速读写，适用于数百条以上的数据记录。(Realize Qt program fast reading and writing of excel table data, suitable for more than hundreds of data records.)

HTML5 WebSocket 构建实时 Web 应用 实例源码

在单片机内部把摄像头采集到的RGB数据通过压缩编码转化为JPEG格式(Converting RGB data collected by camera into JPEG format by compression coding in MCU)

说明：  清晰度计算程序 清晰度计算程序(-Definition program-definition program)

说明：  C# 调用大漠插件实现找字、找图、截图、打字等功能(C # calls the desert plug-in to find words, find pictures, screenshots, typing and other functions)

EQ均衡器曲线， SigmaStudio 各种滤波算法实现如全通，高通，低通，带通，EQ等等(EQ equalizer curve, Sigma Studio filtering algorithms such as all-pass, high-pass, low-pass, band-pass, EQ and so on)

ree(void *p)函数是用来释放程序动态申请的内存。其参数是个指针类型。在C当中，只有当使用了动态内存申请函数malloc calloc realloc申请内存之后，才可以使用free来释放之。释放之后就不能再使用了。(ree (void* p) function is used to release the program dynamically allocated memory. Its argument is a pointer type. In C, only apply when using the dynamic memory functions malloc calloc realloc application memory before you can use free to release it. After release no longer use.)

ip地址数据库格式，便于开发使用,很清晰.(ip address database format to facilitate development and use, very clear.)

说明：  PT2259的驱动程序，可准确实现PT2259芯片的控制。(PT2259 driver, can accurately realize the PT2259 chip control.)