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v3.5.0-ICCery.1.2
argyllcms/xicc/xfbview.c
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gronod 45bdf51201 Initial commit of v3.5.0
2026-08-20 20:28:40 +01:00

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/*
* View inv fwd table device interp of an ICC file, V1.23\n");
*
* Author: Graeme W. Gill
* Date: 2000/12/8
* Version: 1.23
*
* Copyright 2000 Graeme W. Gill
* Please refer to License.txt file for details.
*/
/* TTBD:
*
* Should reject device link profiles ?
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <fcntl.h>
#include <string.h>
#include <math.h>
#include "copyright.h"
#include "aconfig.h"
#include "numlib.h"
#include "icc.h"
#include "conv.h"
#include "xicc.h"
#include "vrml.h"
#define RW 0.5 /* PCS Delta */
//#define FLAGS ICX_CLIP_NEAREST | ICX_CAM_CLIP | ICX_FAST_SETUP
//#define FLAGS ICX_CLIP_NEAREST | ICX_CAM_CLIP
//#define FLAGS ICX_CLIP_NEAREST | ICX_FAST_SETUP
#define FLAGS ICX_CLIP_NEAREST
/* - - - - - - - - - - - - - */
/* Return maximum difference */
double maxdiff(double in1[3], double in2[3]) {
double tt, rv = 0.0;
if ((tt = fabs(in1[0] - in2[0])) > rv)
rv = tt;
if ((tt = fabs(in1[1] - in2[1])) > rv)
rv = tt;
if ((tt = fabs(in1[2] - in2[2])) > rv)
rv = tt;
return rv;
}
/* Return absolute difference */
double absdiff(double in1[3], double in2[3]) {
double tt, rv = 0.0;
tt = in1[0] - in2[0];
rv += tt * tt;
tt = in1[1] - in2[1];
rv += tt * tt;
tt = in1[2] - in2[2];
rv += tt * tt;
return sqrt(rv);
}
/* ---------------------------------------- */
void usage(void) {
fprintf(stderr,"View inv fwd table device interp of an ICC file, Version %s\n",ARGYLL_VERSION_STR);
fprintf(stderr,"Author: Graeme W. Gill, licensed under the AGPL Version 3\n");
fprintf(stderr,"usage: fbtest [options] infile\n");
fprintf(stderr," -v verbose\n");
fprintf(stderr," -f Add PCS -inv(a2b)- device -a2b- PCS Vectors\n");
fprintf(stderr," -d Add ave(PCS + 4 x a*b* variations -inv(a2b)- device) -a2b- PCS\n");
fprintf(stderr," -b Add PCS -b2a- device -a2b- PCS Vectors\n");
fprintf(stderr," -e Add dif between inv(a2b) and b2a cliped vectors\n");
fprintf(stderr," -r res Resolution of test grid [Def 33]\n");
fprintf(stderr," -g Do full grid, not just cube\n");
fprintf(stderr," -a Do all values, not just clipped ones\n");
fprintf(stderr," -l tlimit set total ink limit, 0 - 400%% (estimate by default)\n");
fprintf(stderr," -L klimit set black ink limit, 0 - 100%% (estimate by default)\n");
fprintf(stderr," [[ output is infile.wrl ]]\n");
exit(1);
}
int
main(
int argc,
char *argv[]
) {
int fa,nfa; /* argument we're looking at */
int verb = 0;
int doaxes = 0;
double tlimit = -1.0; /* Total ink limit */
double klimit = -1.0; /* Black ink limit */
int tres = 33;
int doref = 0; /* Show reference lookups */
int dodelta = 0; /* Show device interp delta variation */
int dob2a = 0; /* Show B2A lookups */
int doeee = 0; /* Show clipped ref PCS to B2A clipped PCS */
int dogrid = 0; /* Do full grid, not just cube */
int doclip = 1; /* Do just clipped values */
static char in_name[MAXNAMEL+1];
static char *xl, out_name[MAXNAMEL+1];
icmFile *rd_fp;
icc *rd_icco;
icmErr err = { 0, { '\000'} };
int rv = 0;
icColorSpaceSignature ins, outs; /* Type of input and output spaces */
int inn; /* Number of device values */
double abscale = 128.0;
error_program = argv[0];
if (argc < 2)
usage();
/* Process the arguments */
for(fa = 1;fa < argc;fa++) {
nfa = fa; /* skip to nfa if next argument is used */
if (argv[fa][0] == '-') { /* Look for any flags */
char *na = NULL; /* next argument after flag, null if none */
if (argv[fa][2] != '\000')
na = &argv[fa][2]; /* next is directly after flag */
else {
if ((fa+1) < argc) {
if (argv[fa+1][0] != '-') {
nfa = fa + 1;
na = argv[nfa]; /* next is seperate non-flag argument */
}
}
}
/* Verbosity */
if (argv[fa][1] == 'v') {
verb = 1;
}
/* Show reference */
else if (argv[fa][1] == 'f') {
doref = 1;
}
/* Show device delta variation */
else if (argv[fa][1] == 'd') {
dodelta = 1;
}
/* Show B2A table lookup */
else if (argv[fa][1] == 'b') {
dob2a = 1;
}
/* Show reference clipped PCS to clipped B2A PCS */
else if (argv[fa][1] == 'e') {
doeee = 1;
}
/* Do full grid, not just cube */
else if (argv[fa][1] == 'g') {
dogrid = 1;
}
/* Do all values, not just clipped ones */
else if (argv[fa][1] == 'a') {
doclip = 0;
}
/* Ink limit */
else if (argv[fa][1] == 'l') {
fa = nfa;
if (na == NULL) usage();
tlimit = atoi(na)/100.0;
}
else if (argv[fa][1] == 'L') {
fa = nfa;
if (na == NULL) usage();
klimit = atoi(na)/100.0;
}
/* Resolution */
else if (argv[fa][1] == 'r') {
fa = nfa;
if (na == NULL) usage();
tres = atoi(na);
}
else if (argv[fa][1] == '?')
usage();
else
usage();
}
else
break;
}
if (fa >= argc || argv[fa][0] == '-') usage();
strncpy(in_name,argv[fa++],MAXNAMEL); in_name[MAXNAMEL] = '\000';
strcpy(out_name, in_name);
if ((xl = strrchr(out_name, '.')) == NULL) /* Figure where extention is */
xl = out_name + strlen(out_name);
xl[0] = '\000'; /* Remove extension */
/* Open up the file for reading */
if ((rd_fp = new_icmFileStd_name(&err,in_name,"r")) == NULL)
error ("Read: Can't open file '%s' (0x%x, '%s')",in_name,err.c,err.m);
if ((rd_icco = new_icc(&err)) == NULL)
error ("Read: Creation of ICC object failed (0x%x, '%s')",err.c,err.m);
/* Read the header and tag list */
if ((rv = rd_icco->read(rd_icco,rd_fp,0)) != 0)
error ("Read: %d, %s",rv,rd_icco->e.m);
/* Run the target Lab values through the bwd and fwd tables, */
/* to compute the overall error. */
{
#define GAMUT_LCENT 50.0
xicc *xicco;
icxLuBase *luo;
icxInk ink; /* Ink parameters */
vrml *wrl;
struct {
double x, y, z;
double wx, wy, wz;
double r, g, b;
} axes[5] = {
{ 0, 0, 50-GAMUT_LCENT, 2, 2, 100, .7, .7, .7 }, /* L axis */
{ 50, 0, 0-GAMUT_LCENT, 100, 2, 2, 1, 0, 0 }, /* +a (red) axis */
{ 0, -50, 0-GAMUT_LCENT, 2, 100, 2, 0, 0, 1 }, /* -b (blue) axis */
{ -50, 0, 0-GAMUT_LCENT, 100, 2, 2, 0, 1, 0 }, /* -a (green) axis */
{ 0, 50, 0-GAMUT_LCENT, 2, 100, 2, 1, 1, 0 }, /* +b (yellow) axis */
};
int coa[4];
int i, j;
/* Wrap with an expanded icc */
if ((xicco = new_xicc(rd_icco)) == NULL)
error ("Creation of xicc failed");
/* Set the default ink limits if not set on command line */
icxDefaultLimits(xicco, &ink.tlimit, tlimit, &ink.klimit, klimit);
if (verb) {
if (ink.tlimit >= 0.0)
printf("Total ink limit assumed is %3.0f%%\n",100.0 * ink.tlimit);
if (ink.klimit >= 0.0)
printf("Black ink limit assumed is %3.0f%%\n",100.0 * ink.klimit);
}
ink.c.Ksmth = ICXINKDEFSMTH; /* Default smoothing */
ink.c.Kskew = ICXINKDEFSKEW; /* default curve skew */
ink.c.Kstle = 0.5; /* Min K at white end */
ink.c.Kstpo = 0.5; /* Start of transition is at white */
ink.c.Kenle = 0.5; /* Max K at black end */
ink.c.Kenpo = 0.5; /* End transition at black */
ink.c.Kshap = 1.0; /* Linear transition */
/* Get a Device to PCS conversion object */
if ((luo = xicco->get_luobj(xicco, FLAGS, icmFwd, icAbsoluteColorimetric, icSigLabData, icmLuOrdNorm, NULL, &ink)) == NULL) {
if ((luo = xicco->get_luobj(xicco, FLAGS, icmFwd, icmDefaultIntent, icSigLabData, icmLuOrdNorm, NULL, &ink)) == NULL)
error ("%d, %s",rd_icco->e.c, rd_icco->e.m);
}
/* Get details of conversion */
luo->spaces(luo, &ins, &inn, &outs, NULL, NULL, NULL, NULL, NULL);
if (ins != icSigCmykData
&& ins != icSigRgbData) {
error("Expecting RGB or CMYK device");
}
if ((wrl = new_vrml(out_name, doaxes, vrml_lab)) == NULL) {
fprintf(stderr,"new_vrml failed for '%s%s'\n",out_name,vrml_ext());
return 2;
}
/* ---------------------------------------------- */
/* Clipping vectors of inverse a2b */
/* PCS -inv(a2b)- device -a2b- PCS Vectors */
/* PCS -> device -> PCS */
if (doref) {
double rgb[3];
if (verb)
printf("Adding PCS -inv(a2b)- device -a2b- PCS Vectors \n");
wrl->start_line_set(wrl, 0);
i = 0;
/* For range of PCS values */
for (coa[0] = 0; coa[0] < tres; coa[0]++) {
for (coa[1] = 0; coa[1] < tres; coa[1]++) {
for (coa[2] = 0; coa[2] < tres; coa[2]++) {
double in[4], dev[4], out[4];
double temp[4];
int rv1, rv2;
if (!dogrid
&& coa[0] != 0 && coa[0] != (tres-1)
&& coa[1] != 0 && coa[1] != (tres-1)
&& coa[2] != 0 && coa[2] != (tres-1)) {
continue;
}
temp[0] = coa[0]/(tres-1.0);
temp[1] = coa[1]/(tres-1.0);
temp[2] = coa[2]/(tres-1.0);
/* PCS values */
in[0] = temp[0] * 100.0;
in[1] = abscale * 2.0 * (temp[1] - 0.5);
in[2] = abscale * 2.0 * (temp[2] - 0.5);
/* Do reference lookup */
/* PCS -> Device */
if ((rv2 = luo->inv_lookup(luo, dev, in)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
if (doclip && rv2 != 1) /* Not clip */
continue;
/* Device -> PCS */
if ((rv1 = luo->lookup(luo, out, dev)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
if (verb)
printf("."), fflush(stdout);
/* Input PCS to ideal (Inverse AtoB) clipped PCS values */
wrl->add_vertex(wrl, 0, in);
wrl->add_vertex(wrl, 0, out);
i++;
}
}
}
if (verb)
printf("\n");
for (j = 0; j < i; j++) {
int ix[2];
ix[0] = j * 2;
ix[1] = j * 2 +1;
wrl->add_line(wrl, 0, ix);
}
rgb[0] = 1.0;
rgb[1] = 0.1;
rgb[2] = 0.1;
wrl->make_lines_cc(wrl, 0, 0.0, rgb);
}
/* ---------------------------------------------- */
/* Clipping vectors of average around PCS of inverse a2b */
/* Average of(PCS + 4 x a*b* variations -inv(a2b)- device) -a2b- PCS */
if (dodelta) {
double rgb[3];
if (verb)
printf("Adding ave(PCS + 4 x a*b* variations -inv(a2b)- device) -a2b- PCS\n");
wrl->start_line_set(wrl, 0);
i = 0;
/* For Lab values */
for (coa[0] = 0; coa[0] < tres; coa[0]++) {
for (coa[1] = 0; coa[1] < tres; coa[1]++) {
for (coa[2] = 0; coa[2] < tres; coa[2]++) {
double in[4], dev[4], out[4];
double in4[4], check[4];
double temp[4], adev[4];
double dev0[4], dev1[4], dev2[4], dev3[4];
int rv1, rv2;
if (!dogrid
&& coa[0] != 0
&& coa[0] != (tres-1)
&& coa[1] != 0
&& coa[1] != (tres-1)
&& coa[2] != 0
&& coa[2] != (tres-1))
continue;
temp[0] = coa[0]/(tres-1.0);
temp[1] = coa[1]/(tres-1.0);
temp[2] = coa[2]/(tres-1.0);
in[0] = temp[0] * 100.0;
in[1] = abscale * 2.0 * (temp[1] - 0.5);
in[2] = abscale * 2.0 * (temp[2] - 0.5);
/* Do reference lookup */
/* PCS -> ideal Device */
if ((rv2 = luo->inv_lookup(luo, dev, in)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
if (doclip && rv2 != 1) /* Not clip */
continue;
/* Device -> PCS check value - not used */
if ((rv1 = luo->lookup(luo, check, dev)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
/* - - - - - - - - - - - - - - - */
/* Now do average in device space of two points */
temp[0] = coa[0]/(tres-1.0);
temp[1] = (coa[1]-RW)/(tres-1.0);
temp[2] = (coa[2]-RW)/(tres-1.0);
in4[0] = temp[0] * 100.0;
in4[1] = abscale * 2.0 * (temp[1] - 0.5);
in4[2] = abscale * 2.0 * (temp[2] - 0.5);
/* PCS -> Device */
if ((rv2 = luo->inv_lookup(luo, dev0, in4)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
adev[0] = 0.25 * dev0[0];
adev[1] = 0.25 * dev0[1];
adev[2] = 0.25 * dev0[2];
adev[3] = 0.25 * dev0[3];
temp[0] = coa[0]/(tres-1.0);
temp[1] = (coa[1]+RW)/(tres-1.0);
temp[2] = (coa[2]-RW)/(tres-1.0);
in4[0] = temp[0] * 100.0;
in4[1] = abscale * 2.0 * (temp[1] - 0.5);
in4[2] = abscale * 2.0 * (temp[2] - 0.5);
/* PCS -> Device */
if ((rv2 = luo->inv_lookup(luo, dev1, in4)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
adev[0] += 0.25 * dev1[0];
adev[1] += 0.25 * dev1[1];
adev[2] += 0.25 * dev1[2];
adev[3] += 0.25 * dev1[3];
temp[0] = coa[0]/(tres-1.0);
temp[1] = (coa[1]-RW)/(tres-1.0);
temp[2] = (coa[2]+RW)/(tres-1.0);
in4[0] = temp[0] * 100.0;
in4[1] = abscale * 2.0 * (temp[1] - 0.5);
in4[2] = abscale * 2.0 * (temp[2] - 0.5);
/* PCS -> Device */
if ((rv2 = luo->inv_lookup(luo, dev2, in4)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
adev[0] += 0.25 * dev2[0];
adev[1] += 0.25 * dev2[1];
adev[2] += 0.25 * dev2[2];
adev[3] += 0.25 * dev2[3];
temp[0] = coa[0]/(tres-1.0);
temp[1] = (coa[1]+RW)/(tres-1.0);
temp[2] = (coa[2]+RW)/(tres-1.0);
in4[0] = temp[0] * 100.0;
in4[1] = abscale * 2.0 * (temp[1] - 0.5);
in4[2] = abscale * 2.0 * (temp[2] - 0.5);
/* PCS -> Device */
if ((rv2 = luo->inv_lookup(luo, dev3, in4)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
adev[0] += 0.25 * dev3[0];
adev[1] += 0.25 * dev3[1];
adev[2] += 0.25 * dev3[2];
adev[3] += 0.25 * dev3[3];
/* Average device -> PCS */
if ((rv1 = luo->lookup(luo, out, adev)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
if (verb)
printf("."), fflush(stdout);
wrl->add_vertex(wrl, 0, in);
wrl->add_vertex(wrl, 0, out);
i++;
}
}
}
if (verb)
printf("\n");
for (j = 0; j < i; j++) {
int ix[2];
ix[0] = j * 2;
ix[1] = j * 2 +1;
wrl->add_line(wrl, 0, ix);
}
rgb[0] = 0.9;
rgb[1] = 0.9;
rgb[2] = 0.9;
wrl->make_lines_cc(wrl, 0, 0.0, rgb);
}
/* ---------------------------------------------- */
/* Clipping vectors of b2a */
/* PCS -b2a- device -a2b- PCS Vectors */
if (dob2a) {
double rgb[3];
icxLuBase *luoB;
wrl->start_line_set(wrl, 0);
/* Get a B2A (PCS to Device) conversion object */
if ((luoB = xicco->get_luobj(xicco, FLAGS, icmBwd, icAbsoluteColorimetric,
icSigLabData, icmLuOrdNorm, NULL, &ink)) == NULL) {
if ((luoB = xicco->get_luobj(xicco, FLAGS, icmBwd, icmDefaultIntent,
icSigLabData, icmLuOrdNorm, NULL, &ink)) == NULL)
error ("%d, %s",rd_icco->e.c, rd_icco->e.m);
}
if (verb)
printf("Adding PCS -b2a- device -a2b- PCS Vectors\n");
i = 0;
/* For PCS values */
for (coa[0] = 0; coa[0] < tres; coa[0]++) {
for (coa[1] = 0; coa[1] < tres; coa[1]++) {
for (coa[2] = 0; coa[2] < tres; coa[2]++) {
double in[4], dev[4], out[4];
double temp[4];
int rv1, rv2;
if (!dogrid
&& coa[0] != 0
&& coa[0] != (tres-1)
&& coa[1] != 0
&& coa[1] != (tres-1)
&& coa[2] != 0
&& coa[2] != (tres-1))
continue;
temp[0] = coa[0]/(tres-1.0);
temp[1] = coa[1]/(tres-1.0);
temp[2] = coa[2]/(tres-1.0);
in[0] = temp[0] * 100.0;
in[1] = abscale * 2.0 * (temp[1] - 0.5);
in[2] = abscale * 2.0 * (temp[2] - 0.5);
/* PCS -> Device */
if ((rv2 = luoB->lookup(luoB, dev, in)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
if (doclip && rv2 != 1) /* Not clip */
continue;
/* Device -> PCS */
if ((rv1 = luo->lookup(luo, out, dev)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
if (verb)
printf("."), fflush(stdout);
wrl->add_vertex(wrl, 0, in);
wrl->add_vertex(wrl, 0, out);
i++;
}
}
}
if (verb)
printf("\n");
for (j = 0; j < i; j++) {
int ix[2];
ix[0] = j * 2;
ix[1] = j * 2 +1;
wrl->add_line(wrl, 0, ix);
}
rgb[0] = 0.9;
rgb[1] = 0.9;
rgb[2] = 0.9;
wrl->make_lines_cc(wrl, 0, 0.0, rgb);
luoB->del(luoB);
}
/* ---------------------------------------------- */
/* Difference between:
PCS -inv(a2b)- device -a2b- PCS
and
PCS -b2a- device -a2b- PCS
*/
if (doeee) {
double rgb[3];
icxLuBase *luoB;
wrl->start_line_set(wrl, 0);
/* Get a PCS to Device conversion object */
if ((luoB = xicco->get_luobj(xicco, FLAGS, icmBwd, icAbsoluteColorimetric,
icSigLabData, icmLuOrdNorm, NULL, &ink)) == NULL) {
if ((luoB = xicco->get_luobj(xicco, FLAGS, icmBwd, icmDefaultIntent,
icSigLabData, icmLuOrdNorm, NULL, &ink)) == NULL)
error ("%d, %s",rd_icco->e.c, rd_icco->e.m);
}
if (verb)
printf("Adding difference between inv(a2b) and b2a cliped vectors\n");
i = 0;
for (coa[0] = 0; coa[0] < tres; coa[0]++) {
for (coa[1] = 0; coa[1] < tres; coa[1]++) {
for (coa[2] = 0; coa[2] < tres; coa[2]++) {
double in[4], dev[4], out[4];
double check[4];
double temp[4];
int rv1, rv2;
if (!dogrid
&& coa[0] != 0
&& coa[0] != (tres-1)
&& coa[1] != 0
&& coa[1] != (tres-1)
&& coa[2] != 0
&& coa[2] != (tres-1))
continue;
temp[0] = coa[0]/(tres-1.0);
temp[1] = coa[1]/(tres-1.0);
temp[2] = coa[2]/(tres-1.0);
in[0] = temp[0] * 100.0;
in[1] = abscale * 2.0 * (temp[1] - 0.5);
in[2] = abscale * 2.0 * (temp[2] - 0.5);
/* Do reference lookup using inverse a2b */
/* PCS -> Device */
if ((rv1 = luo->inv_lookup(luo, dev, in)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
/* Device -> PCS */
if (luo->lookup(luo, check, dev) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
/* Do B2A table lookup */
/* PCS -> Device */
if ((rv2 = luoB->lookup(luoB, dev, in)) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
/* Device -> PCS */
if (luo->lookup(luo, out, dev) > 1)
error ("%d, %s",rd_icco->e.c,rd_icco->e.m);
if (doclip && rv1 != 1 && rv2 != 1) /* Not clip */
continue;
if (verb)
printf("."), fflush(stdout);
wrl->add_vertex(wrl, 0, check);
wrl->add_vertex(wrl, 0, out);
i++;
}
}
}
if (verb)
printf("\n");
for (j = 0; j < i; j++) {
int ix[2];
ix[0] = j * 2;
ix[1] = j * 2 +1;
wrl->add_line(wrl, 0, ix);
}
rgb[0] = 0.9;
rgb[1] = 0.9;
rgb[2] = 0.9;
wrl->make_lines_cc(wrl, 0, 0.0, rgb);
luoB->del(luoB);
}
/* ---------------------------------------------- */
if (wrl->flush(wrl) != 0) {
fprintf(stderr,"Error closing output file '%s%s'\n",out_name,vrml_ext());
return 2;
}
wrl->del(wrl);
/* Done with lookup object */
luo->del(luo);
xicco->del(xicco);
}
rd_icco->del(rd_icco);
rd_fp->del(rd_fp);
return 0;
}
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