/* $Id: tiffcmp.c,v 1.12 2005/12/29 00:15:57 bfriesen Exp $ */
/*
* Copyright (c) 1988-1997 Sam Leffler
* Copyright (c) 1991-1997 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.
*/
#include "tif_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "tiffio.h"
#ifndef HAVE_GETOPT
extern int getopt(int, char**, char*);
#endif
static int stopondiff = 1;
static int stoponfirsttag = 1;
static uint16 bitspersample = 1;
static uint16 samplesperpixel = 1;
static uint16 sampleformat = SAMPLEFORMAT_UINT;
static uint32 imagewidth;
static uint32 imagelength;
static void usage(void);
static int tiffcmp(TIFF*, TIFF*);
static int cmptags(TIFF*, TIFF*);
static int ContigCompare(int, uint32, unsigned char*, unsigned char*, int);
static int SeparateCompare(int, int, uint32, unsigned char*, unsigned char*);
static void PrintIntDiff(uint32, int, uint32, uint32, uint32);
static void PrintFloatDiff(uint32, int, uint32, double, double);
static void leof(const char*, uint32, int);
int
main(int argc, char* argv[])
{
TIFF *tif1, *tif2;
int c, dirnum;
extern int optind;
extern char* optarg;
while ((c = getopt(argc, argv, "ltz:")) != -1)
switch (c) {
case 'l':
stopondiff = 0;
break;
case 'z':
stopondiff = atoi(optarg);
break;
case 't':
stoponfirsttag = 0;
break;
case '?':
usage();
/*NOTREACHED*/
}
if (argc - optind < 2)
usage();
tif1 = TIFFOpen(argv[optind], "r");
if (tif1 == NULL)
return (-1);
tif2 = TIFFOpen(argv[optind+1], "r");
if (tif2 == NULL)
return (-2);
dirnum = 0;
while (tiffcmp(tif1, tif2)) {
if (!TIFFReadDirectory(tif1)) {
if (!TIFFReadDirectory(tif2))
break;
printf("No more directories for %s\n",
TIFFFileName(tif1));
return (1);
} else if (!TIFFReadDirectory(tif2)) {
printf("No more directories for %s\n",
TIFFFileName(tif2));
return (1);
}
printf("Directory %d:\n", ++dirnum);
}
TIFFClose(tif1);
TIFFClose(tif2);
return (0);
}
char* stuff[] = {
"usage: tiffcmp [options] file1 file2",
"where options are:",
" -l list each byte of image data that differs between the files",
" -z # list specified number of bytes that differs between the files",
" -t ignore any differences in directory tags",
NULL
};
static void
usage(void)
{
char buf[BUFSIZ];
int i;
setbuf(stderr, buf);
fprintf(stderr, "%s\n\n", TIFFGetVersion());
for (i = 0; stuff[i] != NULL; i++)
fprintf(stderr, "%s\n", stuff[i]);
exit(-1);
}
#define checkEOF(tif, row, sample) { \
leof(TIFFFileName(tif), row, sample); \
goto bad; \
}
static int CheckShortTag(TIFF*, TIFF*, int, char*);
static int CheckShort2Tag(TIFF*, TIFF*, int, char*);
static int CheckShortArrayTag(TIFF*, TIFF*, int, char*);
static int CheckLongTag(TIFF*, TIFF*, int, char*);
static int CheckFloatTag(TIFF*, TIFF*, int, char*);
static int CheckStringTag(TIFF*, TIFF*, int, char*);
static int
tiffcmp(TIFF* tif1, TIFF* tif2)
{
uint16 config1, config2;
tsize_t size1;
uint32 row;
tsample_t s;
unsigned char *buf1, *buf2;
if (!CheckShortTag(tif1, tif2, TIFFTAG_BITSPERSAMPLE, "BitsPerSample"))
return (0);
if (!CheckShortTag(tif1, tif2, TIFFTAG_SAMPLESPERPIXEL, "SamplesPerPixel"))
return (0);
if (!CheckLongTag(tif1, tif2, TIFFTAG_IMAGEWIDTH, "ImageWidth"))
return (0);
if (!cmptags(tif1, tif2))
return (1);
(void) TIFFGetField(tif1, TIFFTAG_BITSPERSAMPLE, &bitspersample);
(void) TIFFGetField(tif1, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
(void) TIFFGetField(tif1, TIFFTAG_SAMPLEFORMAT, &sampleformat);
(void) TIFFGetField(tif1, TIFFTAG_IMAGEWIDTH, &imagewidth);
(void) TIFFGetField(tif1, TIFFTAG_IMAGELENGTH, &imagelength);
(void) TIFFGetField(tif1, TIFFTAG_PLANARCONFIG, &config1);
(void) TIFFGetField(tif2, TIFFTAG_PLANARCONFIG, &config2);
buf1 = (unsigned char *)_TIFFmalloc(size1 = TIFFScanlineSize(tif1));
buf2 = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(tif2));
if (buf1 == NULL || buf2 == NULL) {
fprintf(stderr, "No space for scanline buffers\n");
exit(-1);
}
if (config1 != config2 && bitspersample != 8 && samplesperpixel > 1) {
fprintf(stderr,
"Can't handle different planar configuration w/ different bits/sample\n");
goto bad;
}
#define pack(a,b) ((a)<<8)|(b)
switch (pack(config1, config2)) {
case pack(PLANARCONFIG_SEPARATE, PLANARCONFIG_CONTIG):
for (row = 0; row < imagelength; row++) {
if (TIFFReadScanline(tif2, buf2, row, 0) < 0)
checkEOF(tif2, row, -1)
for (s = 0; s < samplesperpixel; s++) {
if (TIFFReadScanline(tif1, buf1, row, s) < 0)
checkEOF(tif1, row, s)
if (SeparateCompare(1, s, row, buf2, buf1) < 0)
goto bad1;
}
}
break;
case pack(PLANARCONFIG_CONTIG, PLANARCONFIG_SEPARATE):
for (row = 0; row < imagelength; row++) {
if (TIFFReadScanline(tif1, buf1, row, 0) < 0)
checkEOF(tif1, row, -1)
for (s = 0; s < samplesperpixel; s++) {
if (TIFFReadScanline(tif2, buf2, row, s) < 0)
checkEOF(tif2, row, s)
if (SeparateCompare(0, s, row, buf1, buf2) < 0)
goto bad1;
}
}
break;
case pack(PLANARCONFIG_SEPARATE, PLANARCONFIG_SEPARATE):
for (s = 0; s < samplesperpixel; s++)
for (row = 0; row < imagelength; row++) {
if (TIFFReadScanline(tif1, buf1, row, s) < 0)
checkEOF(tif1, row, s)
if (TIFFReadScanline(tif2, buf2, row, s) < 0)
checkEOF(tif2, row, s)
if (ContigCompare(s, row, buf1, buf2, size1) < 0)
goto bad1;
}
break;
case pack(PLANARCONFIG_CONTIG, PLANARCONFIG_CONTIG):
for (row = 0; row < imagelength; row++) {
if (TIFFReadScanline(tif1, buf1, row, 0) < 0)
checkEOF(tif1, row, -1)
if (TIFFReadScanline(tif2, buf2, row, 0) < 0)
checkEOF(tif2, row, -1)
if (ContigCompare(-1, row, buf1, buf2, size1) < 0)
goto bad1;
}
break;
}
if (buf1) _TIFFfree(buf1);
if (buf2) _TIFFfree(buf2);
return (1);
bad:
if (stopondiff)
exit(1);
bad1:
if (buf1) _TIFFfree(buf1);
if (buf2) _TIFFfree(buf2);
return (0);
}
#define CmpShortField(tag, name) \
if (!CheckShortTag(tif1, tif2, tag, name) && stoponfirsttag) return (0)
#define CmpShortField2(tag, name) \
if (!CheckShort2Tag(tif1, tif2, tag, name) && stoponfirsttag) return (0)
#define CmpLongField(tag, name) \
if (!CheckLongTag(tif1, tif2, tag, name) && stoponfirsttag) return (0)
#define CmpFloatField(tag, name) \
if (!CheckFloatTag(tif1, tif2, tag, name) && stoponfirsttag) return (0)
#define CmpStringField(tag, name) \
if (!CheckStringTag(tif1, tif2, tag, name) && stoponfirsttag) return (0)
#define CmpShortArrayField(tag, name) \
if (!CheckShortArrayTag(tif1, tif2, tag, name) && stoponfirsttag) return (0)
static int
cmptags(TIFF* tif1, TIFF* tif2)
{
CmpLongField(TIFFTAG_SUBFILETYPE, "SubFileType");
CmpLongField(TIFFTAG_IMAGEWIDTH, "ImageWidth");
CmpLongField(TIFFTAG_IMAGELENGTH, "ImageLength");
CmpShortField(TIFFTAG_BITSPERSAMPLE, "BitsPerSample");
CmpShortField(TIFFTAG_COMPRESSION, "Compression");
CmpShortField(TIFFTAG_PREDICTOR, "Predictor");
CmpShortField(TIFFTAG_PHOTOMETRIC, "PhotometricInterpretation");
CmpShortField(TIFFTAG_THRESHHOLDING, "Thresholding");
CmpShortField(TIFFTAG_FILLORDER, "FillOrder");
CmpShortField(TIFFTAG_ORIENTATION, "Orientation");
CmpShortField(TIFFTAG_SAMPLESPERPIXEL, "SamplesPerPixel");
CmpShortField(TIFFTAG_MINSAMPLEVALUE, "MinSampleValue");
CmpShortField(TIFFTAG_MAXSAMPLEVALUE, "MaxSampleValue");
CmpShortField(TIFFTAG_SAMPLEFORMAT, "SampleFormat");
CmpFloatField(TIFFTAG_XRESOLUTION, "XResolution");
CmpFloatField(TIFFTAG_YRESOLUTION, "YResolution");
CmpLongField(TIFFTAG_GROUP3OPTIONS, "Group3Options");
CmpLongField(TIFFTAG_GROUP4OPTIONS, "Group4Options");
CmpShortField(TIFFTAG_RESOLUTIONUNIT, "ResolutionUnit");
CmpShortField(TIFFTAG_PLANARCONFIG, "PlanarConfiguration");
CmpLongField(TIFFTAG_ROWSPERSTRIP, "RowsPerStrip");
CmpFloatField(TIFFTAG_XPOSITION, "XPosition");
CmpFloatField(TIFFTAG_YPOSITION, "YPosition");
CmpShortField(TIFFTAG_GRAYRESPONSEUNIT, "GrayResponseUnit");
CmpShortField(TIFFTAG_COLORRESPONSEUNIT, "ColorResponseUnit");
#ifdef notdef
{ uint16 *graycurve;
CmpField(TIFFTAG_GRAYRESPONSECURVE, graycurve);
}
{ uint16 *red, *green, *blue;
CmpField3(TIFFTAG_COLORRESPONSECURVE, red, green, blue);
}
{ uint16 *red, *green, *blue;
CmpField3(TIFFTAG_COLORMAP, red, green, blue);
}
#endif
CmpShortField2(TIFFTAG_PAGENUMBER, "PageNumber");
CmpStringField(TIFFTAG_ARTIST, "Artist");
CmpStringField(TIFFTAG_IMAGEDESCRIPTION,"ImageDescription");
CmpStringField(TIFFTAG_MAKE, "Make");
CmpStringField(TIFFTAG_MODEL, "Model");
CmpStringField(TIFFTAG_SOFTWARE, "Software");
CmpStringField(TIFFTAG_DATETIME, "DateTime");
CmpStringField(TIFFTAG_HOSTCOMPUTER, "HostComputer");
CmpStringField(TIFFTAG_PAGENAME, "PageName");
CmpStringField(TIFFTAG_DOCUMENTNAME, "DocumentName");
CmpShortField(TIFFTAG_MATTEING, "Matteing");
CmpShortArrayField(TIFFTAG_EXTRASAMPLES,"ExtraSamples");
return (1);
}
static int
ContigCompare(int sample, uint32 row,
unsigned char* p1, unsigned char* p2, int size)
{
uint32 pix;
int ppb = 8 / bitspersample;
int samples_to_test;
if (memcmp(p1, p2, size) == 0)
return 0;
samples_to_test = (sample == -1) ? samplesperpixel : 1;
switch (bitspersample) {
case 1: case 2: case 4: case 8:
{
unsigned char *pix1 = p1, *pix2 = p2;
for (pix = 0; pix < imagewidth; pix += ppb) {
int s;
for(s = 0; s < samples_to_test; s++) {
if (*pix1 != *pix2) {
if( sample == -1 )
PrintIntDiff(row, s, pix, *pix1, *pix2);
else
PrintIntDiff(row, sample, pix, *pix1, *pix2);
}
pix1++;
pix2++;
}
}
break;
}
case 16:
{
uint16 *pix1 = (uint16 *)p1, *pix2 = (uint16 *)p2;
for (pix = 0; pix < imagewidth; pix++) {
int s;
for(s = 0; s < samples_to_test; s++) {
if (*pix1 != *pix2)
PrintIntDiff(row, sample, pix, *pix1, *pix2);
pix1++;
pix2++;
}
}
break;
}
case 32:
if (sampleformat == SAMPLEFORMAT_UINT
|| sampleformat == SAMPLEFORMAT_INT) {
uint32 *pix1 = (uint32 *)p1, *pix2 = (uint32 *)p2;
for (pix = 0; pix < imagewidth; pix++) {
int s;
for(s = 0; s < samples_to_test; s++) {
if (*pix1 != *pix2) {
PrintIntDiff(row, sample, pix,
*pix1, *pix2);
}
pix1++;
pix2++;
}
}
} else if (sampleformat == SAMPLEFORMAT_IEEEFP) {
float *pix1 = (float *)p1, *pix2 = (float *)p2;
for (pix = 0; pix < imagewidth; pix++) {
int s;
for(s = 0; s < samples_to_test; s++) {
if (*pix1 != *pix2) {
PrintFloatDiff(row, sample, pix,
*pix1, *pix2);
}
pix1++;
pix2++;
}
}
} else {
fprintf(stderr, "Sample format %d is not supported.\n",
sampleformat);
return -1;
}
break;
default:
fprintf(stderr, "Bit depth %d is not supported.\n", bitspersample);
return -1;
}
return 0;
}
static void
PrintIntDiff(uint32 row, int sample, uint32 pix, uint32 w1, uint32 w2)
{
if (sample < 0)
sample = 0;
switch (bitspersample) {
case 1:
case 2:
case 4:
{
int32 mask1, mask2, s;
mask1 = ~((-1) << bitspersample);
s = (8 - bitspersample);
mask2 = mask1 << s;
for (; mask2 && pix < imagewidth;
mask2 >>= bitspersample, s -= bitspersample, pix++) {
if ((w1 & mask2) ^ (w2 & mask2)) {
printf(
"Scanline %lu, pixel %lu, sample %d: %01x %01x\n",
(unsigned long) row,
(unsigned long) pix,
sample,
(unsigned int)((w1 >> s) & mask1),
(unsigned int)((w2 >> s) & mask1));
if (--stopondiff == 0)
exit(1);
}
}
break;
}
case 8:
printf("Scanline %lu, pixel %lu, sample %d: %02x %02x\n",
(unsigned long) row, (unsigned long) pix, sample,
(unsigned int) w1, (unsigned int) w2);
if (--stopondiff == 0)
exit(1);
break;
case 16:
printf("Scanline %lu, pixel %lu, sample %d: %04x %04x\n",
(unsigned long) row, (unsigned long) pix, sample,
(unsigned int) w1, (unsigned int) w2);
if (--stopondiff == 0)
exit(1);
break;
case 32:
printf("Scanline %lu, pixel %lu, sample %d: %08x %08x\n",
(unsigned long) row, (unsigned long) pix, sample,
(unsigned int) w1, (unsigned int) w2);
if (--stopondiff == 0)
exit(1);
break;
default:
break;
}
}
static void
PrintFloatDiff(uint32 row, int sample, uint32 pix, double w1, double w2)
{
if (sample < 0)
sample = 0;
switch (bitspersample) {
case 32:
printf("Scanline %lu, pixel %lu, sample %d: %g %g\n",
(long) row, (long) pix, sample, w1, w2);
if (--stopondiff == 0)
exit(1);
break;
default:
break;
}
}
static int
SeparateCompare(int reversed, int sample, uint32 row,
unsigned char* cp1, unsigned char* p2)
{
uint32 npixels = imagewidth;
int pixel;
cp1 += sample;
for (pixel = 0; npixels-- > 0; pixel++, cp1 += samplesperpixel, p2++) {
if (*cp1 != *p2) {
printf("Scanline %lu, pixel %lu, sample %ld: ",
(long) row, (long) pixel, (long) sample);
if (reversed)
printf("%02x %02x\n", *p2, *cp1);
else
printf("%02x %02x\n", *cp1, *p2);
if (--stopondiff == 0)
exit(1);
}
}
return 0;
}
static int
checkTag(TIFF* tif1, TIFF* tif2, int tag, char* name, void* p1, void* p2)
{
if (TIFFGetField(tif1, tag, p1)) {
if (!TIFFGetField(tif2, tag, p2)) {
printf("%s tag appears only in %s\n",
name, TIFFFileName(tif1));
return (0);
}
return (1);
} else if (TIFFGetField(tif2, tag, p2)) {
printf("%s tag appears only in %s\n", name, TIFFFileName(tif2));
return (0);
}
return (-1);
}
#define CHECK(cmp, fmt) { \
switch (checkTag(tif1,tif2,tag,name,&v1,&v2)) { \
case 1: if (cmp) \
case -1: return (1); \
printf(fmt, name, v1, v2); \
} \
return (0); \
}
static int
CheckShortTag(TIFF* tif1, TIFF* tif2, int tag, char* name)
{
uint16 v1, v2;
CHECK(v1 == v2, "%s: %u %u\n");
}
static int
CheckShort2Tag(TIFF* tif1, TIFF* tif2, int tag, char* name)
{
uint16 v11, v12, v21, v22;
if (TIFFGetField(tif1, tag, &v11, &v12)) {
if (!TIFFGetField(tif2, tag, &v21, &v22)) {
printf("%s tag appears only in %s\n",
name, TIFFFileName(tif1));
return (0);
}
if (v11 == v21 && v12 == v22)
return (1);
printf("%s: <%u,%u> <%u,%u>\n", name, v11, v12, v21, v22);
} else if (TIFFGetField(tif2, tag, &v21, &v22))
printf("%s tag appears only in %s\n", name, TIFFFileName(tif2));
else
return (1);
return (0);
}
static int
CheckShortArrayTag(TIFF* tif1, TIFF* tif2, int tag, char* name)
{
uint16 n1, *a1;
uint16 n2, *a2;
if (TIFFGetField(tif1, tag, &n1, &a1)) {
if (!TIFFGetField(tif2, tag, &n2, &a2)) {
printf("%s tag appears only in %s\n",
name, TIFFFileName(tif1));
return (0);
}
if (n1 == n2) {
char* sep;
uint16 i;
if (memcmp(a1, a2, n1 * sizeof(uint16)) == 0)
return (1);
printf("%s: value mismatch, <%u:", name, n1);
sep = "";
for (i = 0; i < n1; i++)
printf("%s%u", sep, a1[i]), sep = ",";
printf("> and <%u: ", n2);
sep = "";
for (i = 0; i < n2; i++)
printf("%s%u", sep, a2[i]), sep = ",";
printf(">\n");
} else
printf("%s: %u items in %s, %u items in %s", name,
n1, TIFFFileName(tif1),
n2, TIFFFileName(tif2)
);
} else if (TIFFGetField(tif2, tag, &n2, &a2))
printf("%s tag appears only in %s\n", name, TIFFFileName(tif2));
else
return (1);
return (0);
}
static int
CheckLongTag(TIFF* tif1, TIFF* tif2, int tag, char* name)
{
uint32 v1, v2;
CHECK(v1 == v2, "%s: %u %u\n");
}
static int
CheckFloatTag(TIFF* tif1, TIFF* tif2, int tag, char* name)
{
float v1, v2;
CHECK(v1 == v2, "%s: %g %g\n");
}
static int
CheckStringTag(TIFF* tif1, TIFF* tif2, int tag, char* name)
{
char *v1, *v2;
CHECK(strcmp(v1, v2) == 0, "%s: \"%s\" \"%s\"\n");
}
static void
leof(const char* name, uint32 row, int s)
{
printf("%s: EOF at scanline %lu", name, (unsigned long)row);
if (s >= 0)
printf(", sample %d", s);
printf("\n");
}
/* vim: set ts=8 sts=8 sw=8 noet: */
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