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/**
* Copyright © 2016 Mattias Andrée <maandree@kth.se>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "libcolour.h"
#include <stdio.h>
static int test_convert(libcolour_colour_t* c1, libcolour_colour_t* c2, libcolour_colour_t* c3)
{
double ch1, ch2, ch3;
if (libcolour_convert(c1, c2))
return -1;
if (libcolour_convert(c2, c3))
return -1;
ch1 = c1->srgb.R - c3->srgb.R;
ch2 = c1->srgb.G - c3->srgb.G;
ch3 = c1->srgb.B - c3->srgb.B;
ch1 *= ch1;
ch2 *= ch2;
ch3 *= ch3;
switch (c1->model) {
case LIBCOLOUR_CIEXYY:
if (c1->ciexyy.Y == 0)
ch1 = ch2 = 0;
if (c1->ciexyy.y == 0)
ch1 = ch2 = ch3 = 0;
break;
case LIBCOLOUR_CIEXYZ:
if (c1->ciexyz.Y == 0)
ch1 = ch3 = 0;
break;
case LIBCOLOUR_CIE1960UCS:
if (c1->cie1960ucs.v == 0)
ch1 = ch2 = ch3 = 0;
if (c1->cie1960ucs.Y == 0)
ch1 = ch2 = 0;
break;
case LIBCOLOUR_CIEUVW:
if (c1->cieuvw.W == 0)
ch1 = ch2 = 0;
break;
case LIBCOLOUR_CIELCHUV:
if (c1->cielchuv.C == 0)
ch1 = ch3 = 0;
break;
case LIBCOLOUR_CIELAB:
if (c1->cielchuv.L == 0)
ch2 = ch3 = 0;
break;
default:
break;
}
if (ch1 > 0.000001 ||
ch2 > 0.000001 ||
ch3 > 0.000001)
return 0;
return 1;
}
static int test_convert_11(libcolour_colour_t* c1, libcolour_model_t model)
{
libcolour_colour_t c2, c3;
int r1, r2;
c3 = *c1;
c2.model = model;
switch (model) {
case LIBCOLOUR_RGB:
c2.rgb.with_gamma = 0;
if (libcolour_get_rgb_colour_space(&c2.rgb, LIBCOLOUR_RGB_COLOUR_SPACE_SRGB) < 0)
return -1;
return test_convert(c1, &c2, &c3);
case LIBCOLOUR_SRGB:
c2.srgb.with_gamma = 0;
if (r1 = test_convert(c1, &c2, &c3), r1 < 0)
return -1;
c2.srgb.with_gamma = 1;
if (r2 = test_convert(c1, &c2, &c3), r2 < 0)
return -1;
return r1 & r2;
case LIBCOLOUR_CIELUV:
case LIBCOLOUR_CIELCHUV:
c2.cieluv.white.model = LIBCOLOUR_CIEXYZ;
c2.cieluv.white.X = 1.0294;
c2.cieluv.white.Y = 1;
c2.cieluv.white.Z = 0.9118;
return test_convert(c1, &c2, &c3);
case LIBCOLOUR_CIEUVW:
c2.cieuvw.u0 = 0.37;
c2.cieuvw.v0 = 0.30;
return test_convert(c1, &c2, &c3);
default:
return test_convert(c1, &c2, &c3);
}
}
static int test_convert_1n(libcolour_model_t model, const char* model_name, double ch1, double ch2, double ch3)
{
libcolour_colour_t c1;
int run, r, rc = 1;
c1.model = model;
switch (model) {
case LIBCOLOUR_CIELAB:
c1.srgb.R = ch1 * 100, c1.srgb.G = ch2 * 100, c1.srgb.B = ch3 * 100;
break;
default:
c1.srgb.R = ch1, c1.srgb.G = ch2, c1.srgb.B = ch3;
break;
}
for (run = 0;; run++) {
switch (model) {
case LIBCOLOUR_RGB:
if (run == 2)
return rc;
c1.rgb.with_gamma = run;
if (libcolour_get_rgb_colour_space(&c1.rgb, LIBCOLOUR_RGB_COLOUR_SPACE_SRGB) < 0)
return -1;
break;
case LIBCOLOUR_SRGB:
if (run == 2)
return rc;
c1.srgb.with_gamma = run;
break;
case LIBCOLOUR_CIELUV:
case LIBCOLOUR_CIELCHUV:
c1.cieluv.white.model = LIBCOLOUR_CIEXYZ;
if (run == 0) {
c1.cieluv.white.X = 1.0294;
c1.cieluv.white.Y = 1;
c1.cieluv.white.Z = 0.9118;
} else if (run == 1) {
c1.cieluv.white.X = 1.03;
c1.cieluv.white.Y = 0.8;
c1.cieluv.white.Z = 0.92;
} else {
return rc;
}
break;
case LIBCOLOUR_CIEUVW:
if (run == 0) {
c1.cieuvw.u0 = 0.37;
c1.cieuvw.v0 = 0.30;
} else if (run == 1) {
c1.cieuvw.u0 = 0.47;
c1.cieuvw.v0 = 0.31;
} else {
return rc;
}
break;
default:
if (run == 1)
return rc;
break;
}
#define X(ENUM, TYPE)\
r = test_convert_11(&c1, ENUM);\
if (r < 0)\
return -1;\
if (!r)\
printf("%s -> %s -> %s failed at run %i with (%lf, %lf, %lf)\n",\
model_name, #ENUM, model_name, run, ch1, ch2, ch3), rc = 0;
LIBCOLOUR_LIST_MODELS;
#undef X
}
}
static int test_convert_nm(double ch1, double ch2, double ch3)
{
int r, rc = 1;
#define X(ENUM, TYPE)\
r = test_convert_1n(ENUM, #ENUM, ch1, ch2, ch3);\
if (r < 0)\
return -1;\
if (!r)\
rc = 0;
LIBCOLOUR_LIST_MODELS;
#undef X
return rc;
}
static int test_convert_nm_all(void)
{
#define N 11
int r, rc = 1;
double ch1, ch2, ch3;
int i, j, k;
for (i = 0; i < N; i++) {
for (j = 0; j < N; j++) {
for (k = 0; k < N; k++) {
ch1 = ((i + N / 2) % N) / (N - 1);
ch2 = ((j + N / 2) % N) / (N - 1);
ch3 = ((k + N / 2) % N) / (N - 1);
if (ch1 > 0.999) ch1 = 1;
if (ch2 > 0.999) ch2 = 1;
if (ch3 > 0.999) ch3 = 1;
r = test_convert_nm(ch1, ch2, ch3);
if (r < 0)
return -1;
if (!r)
rc = 0;
}
}
}
return rc;
#undef N
}
/**
* Test libcolour
*
* @return 0: All tests passed
* 1: At least one test fail
* 2: An error occurred
*/
int main(int argc, char* argv[])
{
int r, rc = 0;
r = test_convert_nm_all();
if (r < 0)
goto fail;
if (!r)
rc = 1;
return rc;
fail:
perror(*argv);
return 2;
(void) argc;
}
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