VxWorks inflate和deflate的用法总结

 

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背景：项目重构刷新的需要，需要对软件进行上载，并完成在线更新。

首先理一理压缩解压缩的函数定义：

inflate/deflate

/******************************************************************************
*
* inflate - inflate compressed code
*
* This routine inflates <nBytes> of data starting at address <src>.
* The inflated code is copied starting at address <dest>.
* Two sanity checks are performed on the data being decompressed.
* First, we look for a magic number at the start of the data to
* verify that it is really a compressed stream.
* Second, the entire data is optionally checksummed to verify its
* integrity. By default, the checksum is not verified in order to
* speed up the booting process. To turn on checksum verification,
* set the global variable `inflateCksum' to TRUE in the BSP.
*
* RETURNS: OK or ERROR.
*/ 

int inflate
    (
    Byte *    src,
    Byte *    dest,
    int        nBytes
    )

 

/* ===========================================================================
 * Processes a new input file and return its compressed length. This
 * function does not perform lazy evaluationof matches and inserts
 * new strings in the dictionary only for unmatched strings or for short
 * matches. It is used only for the fast compression options.
 */
local ulg deflate()

 

未完待续。。。。