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#ifndef _DEFS_
#define _DEFS_
/*
* Copyright (c) 1991, 1992 by Sam Leffler.
* All rights reserved.
*
* This file is provided for unrestricted use provided that this
* legend is included on all tape media and as a part of the
* software program in whole or part. Users may copy, modify or
* distribute this file at will.
*/
#include "tiffioP.h"
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
typedef struct {
unsigned short count; /* frequency count (maybe long?) */
unsigned short code; /* assigned code */
unsigned long cost; /* cost to use w/o encoding */
} Code;
typedef struct {
Code c;
unsigned short move; /* relative move before */
unsigned short runlen; /* runlen draw */
} CodeEntry;
#define CODEHASH 8209
#define HASHCODE(x,y) ((((x)<<16)|(y)) % CODEHASH)
extern CodeEntry* codehash[CODEHASH];
#define MAXCODES 6000 /* about 75% population */
extern CodeEntry codetable[MAXCODES];
typedef struct {
Code c;
CodeEntry* a; /* first part of pair */
CodeEntry* b; /* second part of pair */
} CodePairEntry;
#define PAIRHASH 16033
#define HASHPAIR(a,b) ((((u_int)(a)<<16)|((u_int)(b)&0xffff)) % PAIRHASH)
extern CodePairEntry* pairhash[PAIRHASH];
#define MAXPAIRS 10000
extern CodePairEntry pairtable[MAXPAIRS];
#define isPair(p) \
(&pairtable[0] <= (CodePairEntry*)(p) && \
(CodePairEntry*)(p) < &pairtable[MAXPAIRS])
extern char** codeNames; /* codeNames[code] => ASCII code name */
extern char* codeNameSpace; /* storage space for codeNames and strings */
extern int ncodes; /* number of assigned codes */
extern int includeStatistics; /* if 1, add comments w/ frequency stats */
extern int startOfRow; /* if 1, have yet to emit a code for this row */
extern int dopairs; /* if 1, encode pairs of codes */
extern int debug; /* debug decoding */
#if USE_PROTOTYPES
extern CodeEntry* enterCode(int dx, int len);
extern CodePairEntry* findPair(CodeEntry* a, CodeEntry* b);
extern CodePairEntry* enterPair(CodeEntry* a, CodeEntry* b);
extern int printPair(TIFF* tif, CodeEntry* a, CodeEntry* b);
#else
extern CodeEntry* enterCode();
extern CodePairEntry* findPair();
extern CodePairEntry* enterPair();
extern int printPair();
#endif
#include "tif_fax3.h"
typedef struct {
long row;
int cc;
u_char* buf;
u_char* bp;
u_char* scanline;
u_char pass;
u_char is2d;
u_short options;
CodeEntry* lastCode;
Fax3BaseState b;
} Fax3DecodeState;
extern Fax3DecodeState fax;
#if USE_PROTOTYPES
extern int FaxPreDecode(TIFF* tif);
extern int Fax3DecodeRow(TIFF* tif, int npels);
extern int Fax4DecodeRow(TIFF* tif, int npels);
#else
extern int FaxPreDecode();
extern int Fax3DecodeRow();
extern int Fax4DecodeRow();
#endif
#endif /* _DEFS_ */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.