Introduction



jpeglib is a shared library for Palm OS handheld computers. It permits other applications to support easily JPEG encoding and decoding. JPEG is a standard compression method for photographic images. It s lossy, which means that the decoded image is very close to, but not exactly the same as the original image this permits much larger compression ratios. The trade-off between quality and compression ratio can be chosen. JPEG is often used by digital cameras, such as the built-in camera of the Zire 71.



For the user of the application, jpeglib is just a PRC file which is installed on the Palm OS handheld like any other application file. It weights slightly less than 64 KB, and is shared by all the applications which rely on it. For the C or C++ developer, jpeglib comes with a single .h include file. Port to other languages should be straighforward.-jpeglib是Palm OS的掌上电脑的共享库。它允许其他应用程序轻松支持JPEG编码和解码。 JPEG是一个标准的摄影图像压缩方法。这是有损的，表示解码后的图像是非常接近的，但不完全与原始图像相同的，这允许更大的压缩比。可以选择质量和压缩比之间的权衡。 JPEG是经常使用的数码相机，如内置摄像头的Zire71。



对于用户的应用程序，jpeglib只是一个中国的Palm OS掌上电脑上安装的文件，它是像任何其他应用程序文件。它的重量略小于64 KB，并依靠它的所有应用程序共享。对于C或C++开发人员，jpeglib配备了一个单一的，H包含文件。移植到其他语言应为straighforward的。