home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Crawly Crypt Collection 1
/
crawlyvol1.bin
/
program
/
grfx_snd
/
tifflib
/
source
/
tif_fax3.h
< prev
next >
Wrap
C/C++ Source or Header
|
1992-11-08
|
2KB
|
40 lines
#ifndef __TIF_FAX3_H__
#define __TIF_FAX3_H__
/*
* @(#)TIFF/tif_fax3.h 1.03, Copyright (c) Sam Leffler, Dieter Linde, Oct 8 1990
*
* CCITT Group 3 compression/decompression definitions.
*/
#define FAX3_CLASSF TIFF_OPT0 /* use Class F protocol */
/*
* The following are for use by Compression=2, 32771, and 4 (T.6) algorithms .
*/
#define FAX3_NOEOL TIFF_OPT1 /* no EOL code at end of row */
#define FAX3_BYTEALIGN TIFF_OPT2 /* force byte alignment at end of row */
#define FAX3_WORDALIGN TIFF_OPT3 /* force word alignment at end of row */
/*
* Compression + decompression state blocks are derived from this ``base state'' block.
*/
typedef struct {
short data; /* current i/o byte */
short bit; /* current i/o bit in byte */
short white; /* value of the color ``white'' */
enum { /* decoding/encoding mode */
G3_1D, /* basic 1-d mode */
G3_2D /* optional 2-d mode */
} tag;
u_char *bitmap; /* bit reversal table */
u_char *refline; /* reference line for 2d decoding */
} Fax3BaseState;
/*
* These routines are used for Group 4 (T.6).
*/
int Fax3Decode2DRow(TIFF *, u_char *, int);
int Fax3Encode2DRow(TIFF *, u_char *, u_char *, int);
void Fax3PutEOL(TIFF *);
#endif /* __TIF_FAX3_H__ */