本源码是将一张jpeg图片显示到9261ek开发板的lcd上，通过famebuffer，并且可以将lcd上的图片截取下来同时转换为jpeg格式,The source is a jpeg image to the lcd board 9261ek through famebuffer, and can picture the interception on the lcd at the same time it is converted to jpeg format

实现JPEG格式的图片解码功能，解码后生成BMP格式的图片，可以直接用于嵌入式平台LCD图片显示。-The realization of JPEG format picture decoding functions to generate decoded image format BMP, can be directly embedded platform for the LCD picture display.