Category : C Source Code
Archive   : FBMTIFF.ZIP
Filename : TIF_DUMP.C

 
Output of file : TIF_DUMP.C contained in archive : FBMTIFF.ZIP
#ifndef lint
static char sccsid[] = "@(#)tif_dumpmode.c 1.11 5/15/90";
#endif

/*
* Copyright (c) 1988, 1990 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.
*/

/*
* TIFF Library.
*
* "Null" Compression Algorithm Support.
*/
#include "tiffio.h"
#include
#include

#if USE_PROTOTYPES
static int DumpModeEncode(TIFF *, u_char *, int);
static int DumpModeDecode(TIFF *, u_char *, int);
static int DumpModeSeek(TIFF *, int);
#else
static int DumpModeEncode(), DumpModeDecode(), DumpModeSeek();
#endif

/*
* Initialize dump mode.
*/
TIFFInitDumpMode(tif)
register TIFF *tif;
{
tif->tif_decoderow = DumpModeDecode;
tif->tif_encoderow = DumpModeEncode;
tif->tif_seek = DumpModeSeek;
return (1);
}

/*
* Encode a scanline of pixels.
*/
static int
DumpModeEncode(tif, pp, cc)
register TIFF *tif;
u_char *pp;
int cc;
{
if (tif->tif_rawcc + cc > tif->tif_rawdatasize)
if (!TIFFFlushData(tif))
return (-1);
bcopy(pp, tif->tif_rawcp, cc);
if (tif->tif_flags & TIFF_SWAB) {
switch (tif->tif_dir.td_bitspersample) {
case 16:
assert((cc & 3) == 0);
TIFFSwabArrayOfShort((u_short *)tif->tif_rawcp, cc/2);
break;
case 32:
assert((cc & 15) == 0);
TIFFSwabArrayOfLong((u_long *)tif->tif_rawcp, cc/4);
break;
}
}
tif->tif_rawcp += cc;
tif->tif_rawcc += cc;
return (1);
}

/*
* Decode a scanline of pixels.
*/
static int
DumpModeDecode(tif, buf, cc)
register TIFF *tif;
u_char *buf;
int cc;
{
if (tif->tif_rawcc < cc) {
TIFFError(tif->tif_name,
"DumpModeDecode: Not enough data for scanline %d",
tif->tif_row);
return (0);
}
bcopy(tif->tif_rawcp, buf, cc);
if (tif->tif_flags & TIFF_SWAB) {
switch (tif->tif_dir.td_bitspersample) {
case 16:
assert((cc & 3) == 0);
TIFFSwabArrayOfShort((u_short *)buf, cc/2);
break;
case 32:
assert((cc & 15) == 0);
TIFFSwabArrayOfLong((u_long *)buf, cc/4);
break;
}
}
tif->tif_rawcp += cc;
tif->tif_rawcc -= cc;
return (1);
}

/*
* Seek forwards nrows in the current strip.
*/
static int
DumpModeSeek(tif, nrows)
register TIFF *tif;
int nrows;
{
tif->tif_rawcp += nrows * tif->tif_scanlinesize;
tif->tif_rawcc -= nrows * tif->tif_scanlinesize;
return (1);
}


  3 Responses to “Category : C Source Code
Archive   : FBMTIFF.ZIP
Filename : TIF_DUMP.C

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

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