| /* $Header: /cvs/bao-parsec/ext/splash2/apps/volrend/src/libtiff/tif_fax3.h,v 1.1.1.1 2012/03/29 17:22:40 uid42307 Exp $ */ |
| |
| /* |
| * Copyright (c) 1990, 1991, 1992 Sam Leffler |
| * Copyright (c) 1991, 1992 Silicon Graphics, Inc. |
| * |
| * Permission to use, copy, modify, distribute, and sell this software and |
| * its documentation for any purpose is hereby granted without fee, provided |
| * that (i) the above copyright notices and this permission notice appear in |
| * all copies of the software and related documentation, and (ii) the names of |
| * Sam Leffler and Silicon Graphics may not be used in any advertising or |
| * publicity relating to the software without the specific, prior written |
| * permission of Sam Leffler and Silicon Graphics. |
| * |
| * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY |
| * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR |
| * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, |
| * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
| * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF |
| * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| * OF THIS SOFTWARE. |
| */ |
| |
| #ifndef _FAX3_ |
| #define _FAX3_ |
| /* |
| * 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'' */ |
| u_long rowbytes; /* XXX maybe should be a long? */ |
| u_long rowpixels; /* XXX maybe should be a long? */ |
| enum { /* decoding/encoding mode */ |
| G3_1D, /* basic 1-d mode */ |
| G3_2D /* optional 2-d mode */ |
| } tag; |
| #if defined(__STDC__) || defined(__EXTENDED__) || USE_CONST |
| u_char const *bitmap; /* bit reversal table */ |
| #else |
| u_char *bitmap; /* bit reversal table */ |
| #endif |
| u_char *refline; /* reference line for 2d decoding */ |
| } Fax3BaseState; |
| |
| /* these routines are used for Group 4 (T.6) */ |
| #if USE_PROTOTYPES |
| extern int Fax3Decode2DRow(TIFF*, u_char *, int); |
| extern int Fax3Encode2DRow(TIFF*, u_char *, u_char *, int); |
| extern void Fax3PutEOL(TIFF*); |
| #else |
| extern int Fax3Decode2DRow(); |
| extern int Fax3Encode2DRow(); |
| extern void Fax3PutEOL(); |
| #endif |
| |
| #define Fax3FlushBits(tif, sp) { \ |
| if ((tif)->tif_rawcc >= (tif)->tif_rawdatasize) \ |
| (void) TIFFFlushData1(tif); \ |
| *(tif)->tif_rawcp++ = (sp)->bitmap[(sp)->data]; \ |
| (tif)->tif_rawcc++; \ |
| (sp)->data = 0; \ |
| (sp)->bit = 8; \ |
| } |
| #endif /* _FAX3_ */ |