We often get questions about how the deflate() and inflate() functions should be used. Users wonder when they should provide more input, when they should use more output, what to do with a Z_BUF_ERROR, how to make sure the process terminates properly

提供JPEG标准压缩压缩的编码解码过程，90%以上的代码有注释，配有GUI设计。代码能够运行，但可能只起到借鉴的作用。(Provide JPEG standard compression coding and decoding process, more than 90% of the code is annotated, with GUI design. Code can run, but it may only serve as a reference.)