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/* $Id: choptest.c++,v 1.9 2003/11/08 02:06:05 lhoward Exp $ */
/*
* Copyright (c) 1994-1996 Sam Leffler
* Copyright (c) 1994-1996 Silicon Graphics, Inc.
* HylaFAX is a trademark of Silicon Graphics
*
* 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.
*/
/*
* Program for testing page chopping support.
*
* Usage: choptest input.tif
*/
#include <unistd.h>
#include "Class2.h"
#include "MemoryDecoder.h"
#include "tiffio.h"
const char* appName;
void
usage()
{
fprintf(stderr, "usage: %s [-a] [-t threshold] input.tif\n", appName);
exit(-1);
}
void
fatal(const char* fmt ...)
{
fprintf(stderr, "%s: ", appName);
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fputs(".\n", stderr);
exit(-1);
}
int
main(int argc, char* argv[])
{
extern int optind, opterr;
extern char* optarg;
float minChop = 3.0; // chop if >= 3" white space at bottom
u_int minRows;
bool doAll = false;
int c;
appName = argv[0];
while ((c = getopt(argc, argv, "t:a")) != -1)
switch (c) {
case 'a':
doAll = true;
break;
case 't':
minChop = atof(optarg);
break;
case '?':
usage();
/*NOTREACHED*/
}
if (argc - optind != 1)
usage();
TIFF* tif = TIFFOpen(argv[optind], "r");
if (!tif)
fatal("%s: Cannot open, or not a TIFF file", argv[optind]);
uint16 comp;
TIFFGetField(tif, TIFFTAG_COMPRESSION, &comp);
if (comp != COMPRESSION_CCITTFAX3 && comp != COMPRESSION_CCITTFAX4)
fatal("%s: Not a Group 3 or Group 4-encoded TIFF file", argv[optind]);
Class2Params params;
params.vr = VR_NORMAL;
params.wd = WD_1728;
params.ln = LN_INF;
params.df = DF_1DMH;
printf("Chop %s >=%.2g\" of white space at the bottom.\n"
, doAll ? "all pages with" : "last page if"
, minChop
);
do {
if (doAll || TIFFLastDirectory(tif)) {
uint32 l;
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &l);
if (l < 1500) {
params.vr = VR_NORMAL;
minRows = (u_int)(98*minChop);
} else {
params.vr = VR_FINE;
minRows = (u_int)(196*minChop);
}
uint32 opts = 0;
TIFFGetField(tif, TIFFTAG_GROUP3OPTIONS, &opts);
params.df = (opts & GROUP3OPT_2DENCODING) ? DF_2DMR : DF_1DMH;
uint16 fillorder;
TIFFGetFieldDefaulted(tif, TIFFTAG_FILLORDER, &fillorder);
uint32* stripbytecount;
(void) TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &stripbytecount);
u_int totbytes = (u_int) stripbytecount[0];
if (totbytes > 0) {
u_char* data = new u_char[totbytes];
if (TIFFReadRawStrip(tif, 0, data, totbytes) >= 0) {
MemoryDecoder dec(data, totbytes);
dec.scanPageForBlanks(fillorder, params);
if (dec.getLastBlanks() > minRows) {
printf(
"Chop %u rows, strip was %lu bytes, need only %lu\n"
, dec.getLastBlanks()
, totbytes
, dec.getEndOfPage() - data
);
} else {
printf("Don't chop, found %u rows, need %u rows\n"
, dec.getLastBlanks()
, minRows
);
}
}
delete data;
}
}
} while (TIFFReadDirectory(tif));
return (0);
}
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