jpeg解压库，针对jz4740 cpu做的优化-aim to jz4740 for jpeg

实现摄像的控制和拍摄图片,帮助读者了解学习OV7670芯片-achieve the aim of taking the photoes

The aim of this short workshop is to demonstrate the effectiveness of the JPEG encoding/decoding process using test data and test images. As explained in the lectures the major elements of the JPEG encoding process are the DCT, the non-uniform Quanti