From 22f703cab05b7cd368f4de9e03991b7664dc5022 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Mon, 1 Sep 2014 13:56:46 +0200 Subject: Initial import of argyll version 1.5.1-8 --- icc/mcheck.c | 541 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 541 insertions(+) create mode 100644 icc/mcheck.c (limited to 'icc/mcheck.c') diff --git a/icc/mcheck.c b/icc/mcheck.c new file mode 100644 index 0000000..9000650 --- /dev/null +++ b/icc/mcheck.c @@ -0,0 +1,541 @@ + +/* + * International Color Consortium Format Library (icclib) + * Check the device chanel to PCS monotonicity. + * + * Author: Graeme W. Gill + * Date: 2000/12/11 + * Version: 2.15 + * + * Copyright 2000 - 2012 Graeme W. Gill + * + * This material is licensed with an "MIT" free use license:- + * see the License.txt file in this directory for licensing details. + */ + +/* TTBD: + * + * Make general device input, not just CMYK + */ + +#include +#include +#include +#include +#include +#include +#include "icc.h" + +void error(char *fmt, ...), warning(char *fmt, ...); + +void usage(void) { + fprintf(stderr,"Check device to PCS monotonicity of a CMYK ICC file, V%s\n",ICCLIB_VERSION_STR); + fprintf(stderr,"Author: Graeme W. Gill\n"); + fprintf(stderr,"usage: kcheck [-v] [-w] infile\n"); + fprintf(stderr," -v verbose\n"); + fprintf(stderr," -c Check just Cyan monotonicity\n"); + fprintf(stderr," -m Check just Magenta monotonicity\n"); + fprintf(stderr," -y Check just Yellow monotonicity\n"); + fprintf(stderr," -k Check just Black monotonicity\n"); + fprintf(stderr," -w create VRML visualisation\n"); + exit(1); +} + +#define MGR 50 /* Maximum grid resolution handled */ + + +FILE *start_vrml(char *name, int doaxes); +void start_line_set(FILE *wrl); +void add_vertex(FILE *wrl, double pp[3]); +void make_lines(FILE *wrl, int ppset); +void end_vrml(FILE *wrl); + +int +main( + int argc, + char *argv[] +) { + int fa,nfa; /* argument we're looking at */ + int verb = 0; + int cchan = -1; /* default all */ + int dovrml = 0; + int doaxes = 0; + char in_name[500]; + char out_name[500], *xl; + icmFile *rd_fp; + icc *wr_icco, *rd_icco; /* Keep object separate */ + int rv = 0; + + /* Check variables */ + icmLuBase *luo; + icmLuLut *luluto; /* Lookup xLut type object */ + int gres; /* Grid resolution */ + icColorSpaceSignature ins, outs; /* Type of input and output spaces */ + int inn; /* Number of input chanels */ + icmLuAlgType alg; + FILE *wrl; + int dx[4]; /* Device index mapping */ + int chan, cs, ce; + + 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' || argv[fa][1] == 'V') { + verb = 1; + } + /* VRML */ + else if (argv[fa][1] == 'w' || argv[fa][1] == 'W') { + dovrml = 1; + } + /* Cyan */ + else if (argv[fa][1] == 'c' || argv[fa][1] == 'C') { + cchan = 0; + } + /* Magenta */ + else if (argv[fa][1] == 'm' || argv[fa][1] == 'M') { + cchan = 1; + } + /* Yellow */ + else if (argv[fa][1] == 'y' || argv[fa][1] == 'Y') { + cchan = 2; + } + /* Black */ + else if (argv[fa][1] == 'k' || argv[fa][1] == 'K') { + cchan = 3; + } + else if (argv[fa][1] == '?') + usage(); + else + usage(); + } + else + break; + } + + if (fa >= argc || argv[fa][0] == '-') usage(); + strcpy(in_name,argv[fa]); + + strcpy(out_name, in_name); + if ((xl = strrchr(out_name, '.')) == NULL) /* Figure where extention is */ + xl = out_name + strlen(out_name); + strcpy(xl,".wrl"); + + /* Open up the file for reading */ + if ((rd_fp = new_icmFileStd_name(in_name,"r")) == NULL) + error ("Read: Can't open file '%s'",in_name); + + if ((rd_icco = new_icc()) == NULL) + error ("Read: Creation of ICC object failed"); + + /* Read the header and tag list */ + if ((rv = rd_icco->read(rd_icco,rd_fp,0)) != 0) + error ("Read: %d, %s",rv,rd_icco->err); + + /* Get a Device to PCS conversion object */ + if ((luo = rd_icco->get_luobj(rd_icco, icmFwd, icRelativeColorimetric, icSigLabData, icmLuOrdNorm)) == NULL) { + if ((luo = rd_icco->get_luobj(rd_icco, icmFwd, icmDefaultIntent, icSigLabData, icmLuOrdNorm)) == NULL) + error ("%d, %s",rd_icco->errc, rd_icco->err); + } + /* Get details of conversion */ + luo->spaces(luo, &ins, &inn, &outs, NULL, &alg, NULL, NULL, NULL); + + if (alg != icmLutType) { + error("Expecting Lut based profile"); + } + + if (ins != icSigCmykData) { + error("Expecting CMYK device"); + } + + if (outs != icSigLabData) { + error("Expecting Lab PCS"); + } + + luluto = (icmLuLut *)luo; /* Lookup xLut type object */ + + gres = luluto->lut->clutPoints; + if (gres > MGR) { + error("Can't handle grid resolution greater than %d\n",MGR); + } + + if (dovrml) { + wrl = start_vrml(out_name, doaxes); + start_line_set(wrl); + } + + /* For all the device chanels chosen */ + if (cchan < 0) { + cs = 0; + ce = inn; + } else { + cs = cchan; + ce = cs + 1; + } + for (chan = cs; chan < ce; chan++) { + + /* Check the monotonicity of the output for a given device input */ + int co[4]; + if (chan == 0) { + dx[0] = 1; + dx[1] = 2; + dx[2] = 3; + dx[3] = 0; /* Cyan is variable */ + } else if (chan == 1) { + dx[0] = 0; + dx[1] = 2; + dx[2] = 3; + dx[3] = 1; /* Magenta is variable */ + } else if (chan == 2) { + dx[0] = 0; + dx[1] = 1; + dx[2] = 3; + dx[3] = 2; /* Yellow is variable */ + } else if (chan == 3) { + dx[0] = 0; + dx[1] = 1; + dx[2] = 2; + dx[3] = 3; /* Black is variable */ + } + + /* Itterate throught the CMY clut grid points */ + for (co[0] = 0; co[0] < gres; co[0]++) { + for (co[1] = 0; co[1] < gres; co[1]++) { + for (co[2] = 0; co[2] < gres; co[2]++) { + int j, k, ck, nm; + double dev[MGR][4]; + double pcs[MGR][3]; + double apcs[3], ss; + + /* Run up the variable axis */ + for (ck = 0; ck < gres; ck++) { + + dev[ck][dx[0]] = co[0]/(gres-1.0); + dev[ck][dx[1]] = co[1]/(gres-1.0); + dev[ck][dx[2]] = co[2]/(gres-1.0); + dev[ck][dx[3]] = ck/(gres-1.0); + + /* Device to PCS */ + if ((rv = luluto->clut(luluto, pcs[ck], dev[ck])) > 1) + error ("%d, %s",rd_icco->errc,rd_icco->err); + +// if (dovrml) +// add_vertex(wrl, pcs[ck]); + } + + /* Compute average vector direction */ + for (ss = 0.0, k = 0; k < 3; k++) { + double tt; + tt = pcs[gres-1][k] - pcs[0][k]; + ss += tt * tt; + apcs[k] = tt; + } + for (k = 0; k < 3; k++) + apcs[k] /= ss; + + /* Now compute the dot product for each vector, */ + /* and check for reversals. */ + j = 0; +//printf("Checking CMYK %f %f %f %f Lab %f %f %f\n", +// dev[j][0], dev[j][1], dev[j][2], dev[j][3], +// pcs[j][0], pcs[j][1], pcs[j][2]); + for (nm = 0, j = 1; j < gres; j++) { + for (ss = 0.0, k = 0; k < 3; k++) /* Dot product */ + ss += (pcs[j][k] - pcs[j-1][k]) * apcs[k]; + +//printf("Checking %f CMYK %f %f %f %f Lab %f %f %f\n", +// ss, dev[j][0], dev[j][1], dev[j][2], dev[j][3], +// pcs[j][0], pcs[j][1], pcs[j][2]); + + if (ss <= 0.0) { + nm = 1; + printf("NonMon %f at CMYK %f %f %f %f Lab %f %f %f\n", + ss, dev[j][0], dev[j][1], dev[j][2], dev[j][3], + pcs[j][0], pcs[j][1], pcs[j][2]); + } + } +//printf("\n"); + + /* Display just the non mono threads */ + if (nm && dovrml) { + for (j = 0; j < gres; j++) + add_vertex(wrl, pcs[j]); + } + if (verb) { + printf("."); fflush(stdout); + } + } + } + } + } + + if (dovrml) { + make_lines(wrl, gres); + end_vrml(wrl); + } + + /* Done with lookup object */ + luo->del(luo); + + rd_icco->del(rd_icco); + rd_fp->del(rd_fp); + + return 0; +} + +/* ------------------------------------------------ */ +/* Some simple functions to do basix VRML work */ + +#define GAMUT_LCENT 50.0 +static int npoints = 0; +static int paloc = 0; +static struct { double pp[3]; } *pary; + +static void Lab2RGB(double *out, double *in); + +FILE *start_vrml(char *name, int doaxes) { + FILE *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 i; + + if ((wrl = fopen(name,"w")) == NULL) + error("Error opening VRML file '%s'\n",name); + + npoints = 0; + + fprintf(wrl,"#VRML V2.0 utf8\n"); + fprintf(wrl,"\n"); + fprintf(wrl,"# Created by the Argyll CMS\n"); + fprintf(wrl,"Transform {\n"); + fprintf(wrl,"children [\n"); + fprintf(wrl," NavigationInfo {\n"); + fprintf(wrl," type \"EXAMINE\" # It's an object we examine\n"); + fprintf(wrl," } # We'll add our own light\n"); + fprintf(wrl,"\n"); + fprintf(wrl," DirectionalLight {\n"); + fprintf(wrl," direction 0 0 -1 # Light illuminating the scene\n"); + fprintf(wrl," direction 0 -1 0 # Light illuminating the scene\n"); + fprintf(wrl," }\n"); + fprintf(wrl,"\n"); + fprintf(wrl," Viewpoint {\n"); + fprintf(wrl," position 0 0 340 # Position we view from\n"); + fprintf(wrl," }\n"); + fprintf(wrl,"\n"); + if (doaxes != 0) { + fprintf(wrl,"# Lab axes as boxes:\n"); + for (i = 0; i < 5; i++) { + fprintf(wrl,"Transform { translation %f %f %f\n", axes[i].x, axes[i].y, axes[i].z); + fprintf(wrl,"\tchildren [\n"); + fprintf(wrl,"\t\tShape{\n"); + fprintf(wrl,"\t\t\tgeometry Box { size %f %f %f }\n", + axes[i].wx, axes[i].wy, axes[i].wz); + fprintf(wrl,"\t\t\tappearance Appearance { material Material "); + fprintf(wrl,"{ diffuseColor %f %f %f} }\n", axes[i].r, axes[i].g, axes[i].b); + fprintf(wrl,"\t\t}\n"); + fprintf(wrl,"\t]\n"); + fprintf(wrl,"}\n"); + } + fprintf(wrl,"\n"); + } + + return wrl; +} + +void +start_line_set(FILE *wrl) { + + fprintf(wrl,"\n"); + fprintf(wrl,"Shape {\n"); + fprintf(wrl," geometry IndexedLineSet { \n"); + fprintf(wrl," coord Coordinate { \n"); + fprintf(wrl," point [\n"); +} + +void add_vertex(FILE *wrl, double pp[3]) { + + fprintf(wrl,"%f %f %f,\n",pp[1], pp[2], pp[0]-GAMUT_LCENT); + + if (paloc < (npoints+1)) { + paloc = (paloc + 10) * 2; + if (pary == NULL) + pary = malloc(paloc * 3 * sizeof(double)); + else + pary = realloc(pary, paloc * 3 * sizeof(double)); + + if (pary == NULL) + error ("Malloc failed"); + } + pary[npoints].pp[0] = pp[0]; + pary[npoints].pp[1] = pp[1]; + pary[npoints].pp[2] = pp[2]; + npoints++; +} + + +void make_lines(FILE *wrl, int ppset) { + int i, j; + + fprintf(wrl," ]\n"); + fprintf(wrl," }\n"); + fprintf(wrl," coordIndex [\n"); + + for (i = 0; i < npoints;) { + for (j = 0; j < ppset; j++, i++) { + fprintf(wrl,"%d, ", i); + } + fprintf(wrl,"-1,\n"); + } + fprintf(wrl," ]\n"); + + /* Color */ + fprintf(wrl," colorPerVertex TRUE\n"); + fprintf(wrl," color Color {\n"); + fprintf(wrl," color [ # RGB colors of each vertex\n"); + + for (i = 0; i < npoints; i++) { + double rgb[3], Lab[3]; + Lab[0] = pary[i].pp[0]; + Lab[1] = pary[i].pp[1]; + Lab[2] = pary[i].pp[2]; + Lab2RGB(rgb, Lab); + fprintf(wrl," %f %f %f,\n", rgb[0], rgb[1], rgb[2]); + } + fprintf(wrl," ] \n"); + fprintf(wrl," }\n"); + /* End color */ + + fprintf(wrl," }\n"); + fprintf(wrl,"} # end shape\n"); + +} + +void end_vrml(FILE *wrl) { + + fprintf(wrl,"\n"); + fprintf(wrl," ] # end of children for world\n"); + fprintf(wrl,"}\n"); + + if (fclose(wrl) != 0) + error("Error closing VRML file\n"); +} + + +/* Convert a gamut Lab value to an RGB value for display purposes */ +static void +Lab2RGB(double *out, double *in) { + double L = in[0], a = in[1], b = in[2]; + double x,y,z,fx,fy,fz; + double R, G, B; + + /* Scale so that black is visible */ + L = L * (100 - 40.0)/100.0 + 40.0; + + /* First convert to XYZ using D50 white point */ + if (L > 8.0) { + fy = (L + 16.0)/116.0; + y = pow(fy,3.0); + } else { + y = L/903.2963058; + fy = 7.787036979 * y + 16.0/116.0; + } + + fx = a/500.0 + fy; + if (fx > 24.0/116.0) + x = pow(fx,3.0); + else + x = (fx - 16.0/116.0)/7.787036979; + + fz = fy - b/200.0; + if (fz > 24.0/116.0) + z = pow(fz,3.0); + else + z = (fz - 16.0/116.0)/7.787036979; + + x *= 0.9642; /* Multiply by white point, D50 */ + y *= 1.0; + z *= 0.8249; + + /* Now convert to sRGB values */ + R = x * 3.2410 + y * -1.5374 + z * -0.4986; + G = x * -0.9692 + y * 1.8760 + z * 0.0416; + B = x * 0.0556 + y * -0.2040 + z * 1.0570; + + if (R < 0.0) + R = 0.0; + else if (R > 1.0) + R = 1.0; + + if (G < 0.0) + G = 0.0; + else if (G > 1.0) + G = 1.0; + + if (B < 0.0) + B = 0.0; + else if (B > 1.0) + B = 1.0; + + R = pow(R, 1.0/2.2); + G = pow(G, 1.0/2.2); + B = pow(B, 1.0/2.2); + + out[0] = R; + out[1] = G; + out[2] = B; +} + + +/* ------------------------------------------------ */ +/* Basic printf type error() and warning() routines */ + +void +error(char *fmt, ...) +{ + va_list args; + + fprintf(stderr,"icctest: Error - "); + va_start(args, fmt); + vfprintf(stderr, fmt, args); + va_end(args); + fprintf(stderr, "\n"); + exit (-1); +} + +void +warning(char *fmt, ...) +{ + va_list args; + + fprintf(stderr,"icctest: Warning - "); + va_start(args, fmt); + vfprintf(stderr, fmt, args); + va_end(args); + fprintf(stderr, "\n"); +} -- cgit v1.2.3