compress.h

一个基于Zlib算法的

#include <vxWorks.h>

#define ZLIB_INTERNAL
#include <sdk/exlib/compress/zlib.h>

#ifndef _INCcompressh
#define _INCcompressh
/*##################################################################################
模块一，声明公用的宏和定义 */
#define  CMP_BLOCK_FLAG  0xa1b2c3d4
#define  CMP_DELAY_TICKS  5     /*delay 5 ticks every 8k data compressed*/

#define  UNCMP_BLOCK_TIMES  250
#define  UNCMP_DELAY_TICKS  5   /*every 250 block data compressed
                                  have been uncpmressed,then delay 5 ticks*/
#define  CMP_BLOCK_SIZE  0x2000     /*the data block size:8k every compress*/


#if defined (_REScompressh)
/*##################################################################################
模块二，声明compress.c专用的宏和定义 */

#else  /* #if not defined (_REScompressh) */

#ifdef __cplusplus
extern "C" {
#endif
/*##################################################################################
模块三，声明由compress.c提供给其他C文件用的宏和定义*/
/*
extern int compress(unsigned char *u_source,  unsigned long u_sourceLen, \
                    unsigned char *u_dest, unsigned long *w_destlen );
extern int uncompress(unsigned char *u_source,  unsigned long u_sourceLen,  \
               unsigned char *u_dest, unsigned long *w_destlen);
int compress8k(unsigned char *u_pSrcBuf, unsigned long u_srcBufSize, \
                      unsigned char *v_pDstBuf, unsigned long *w_pDstBufSize);
unsigned long uncompress8k(unsigned char *u_pSrcBuf, unsigned long u_srcBufSize, \
                                  unsigned char *v_pDstBuf, unsigned long *w_pDstBufSize);
int uncompress8k1(unsigned char *u_pSrcBuf, unsigned long u_srcBufSize, \
                 unsigned char *v_pDstBuf, unsigned long *w_pDstBufSize);
*/
extern int runCompress(unsigned char *u_pSrcBuf, unsigned long u_srcBufSize, \
                      unsigned char *v_pDstBuf, unsigned long *w_pDstBufSize);

extern long runUncompress(unsigned char *u_pSrcBuf, unsigned long u_srcBufSize, \
                                  unsigned char *v_pDstBuf, unsigned long *w_pDstBufSize);

#ifdef __cplusplus
}
#endif

#endif /* #if defined (_REScompressh) */

#endif /*#ifndef _INCcompressh */