png 解码源码，所有接口全部用C语言实现，非常好的东西，对研究PNG的同学们来说，肯定是宝贝重的宝贝，代码全部验证通过！-png decoder source code, all the interfaces all using C language implementation, very good things, the study of PNG' s students is definitely a heavy baby baby, code verification by all

PNG与BMP图像互转源代码,适合C和C++编程开发人员使用，谢谢！-This is source code for the mutual conversion between PNG and BMP picture format, which is suitable for developer with C language.