lz77.h

Microsoft Visual C++ 6.0环境下的无损压缩测试工程

/* Name : lz77.h
 *
 * Notes: This header file contains all of the data structures and function
 *        prototypes that are either globally available or at least available
 *        across modules in the LZ77 compression code.
 *
 *      $Log:$
 */

#ifndef LZ77_H
#define LZ77_H

struct LZ77Info
{
    UBYTE   * input;            /* Pointer to the input data.       */
    LONG      length;           /* The number of bytes to pack.     */
    UBYTE   * output;           /* The output buffer.               */
    LONG      outBufSize;       /* Size of output in bytes.         */
    LONG      outLen;           /* Number of bytes written to ouput.*/
    LONG      Flags;            /* */
    LONG      Number;           /* The number of this chunk.        */
    LONG      Mode;             /* The packing mode to use.         */
    APTR      Password;         /* */

    LONG      pritvate[4];      /* Private to XPK, don't use.       */

    UBYTE   * buffer;
    UBYTE   * tagPos;
    WORD      nextBit;
    ULONG     bufferOffset;
    LONG      maxOffset;
    APTR      hashTable;
};


extern ULONG CompressLZ77  ( struct LZ77Info * info );
extern ULONG DecompressLZ77( struct LZ77Info * info );
extern void  PackFreeLZ77  ( struct LZ77Info * info );

#endif