/**
* Copyright © 2016 Mattias Andrée <maandree@member.fsf.org>
*
* 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 "libclut.h"
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
struct clut
{
size_t red_size;
size_t green_size;
size_t blue_size;
uint16_t *red;
uint16_t *green;
uint16_t *blue;
};
struct dclut
{
size_t red_size;
size_t green_size;
size_t blue_size;
double *red;
double *green;
double *blue;
};
static int clutcmp(const struct clut *a, const struct clut *b, uint16_t tol)
{
size_t i;
if (tol == 0)
return memcmp(a->red, b->red, 3 * 256 * sizeof(uint16_t));
for (i = 0; i < 3 * 256; i++)
if (a->red[i] > b->red[i])
{
if (a->red[i] - b->red[i] > tol)
return +1;
}
else if (a->red[i] < b->red[i])
{
if (b->red[i] - a->red[i] > tol)
return -1;
}
return 0;
}
static int dclutcmp(const struct dclut *a, const struct dclut *b, double tol)
{
size_t i;
for (i = 0; i < 3 * 256; i++)
if (a->red[i] > b->red[i])
{
if (a->red[i] - b->red[i] > tol)
return +1;
}
else if (a->red[i] < b->red[i])
{
if (b->red[i] - a->red[i] > tol)
return -1;
}
return 0;
}
static int dumpcluts(const struct clut *a, const struct clut *b, int tol)
{
size_t i;
uint16_t *r1 = a->red, *r2 = b->red, *g1 = a->green, *g2 = b->green, *b1 = a->blue, *b2 = b->blue;
for (i = 0; i < 256; i++)
{
if ((tol >= 0) &&
(((r1[i] > r2[i]) ? (r1[i] - r2[i]) : (r2[i] - r1[i])) <= tol) &&
(((g1[i] > g2[i]) ? (g1[i] - g2[i]) : (g2[i] - g1[i])) <= tol) &&
(((b1[i] > b2[i]) ? (b1[i] - b2[i]) : (b2[i] - b1[i])) <= tol))
continue;
printf("%3zu (%02x) :: %04x - %04x ---- %04x - %04x ---- %04x - %04x\n",
i, i, r1[i], r2[i], g1[i], g2[i], b1[i], b2[i]);
}
}
static int dumpdcluts(const struct dclut *a, const struct dclut *b, double tol)
{
size_t i;
double *r1 = a->red, *r2 = b->red, *g1 = a->green, *g2 = b->green, *b1 = a->blue, *b2 = b->blue;
for (i = 0; i < 256; i++)
{
if ((tol >= 0) &&
(((r1[i] > r2[i]) ? (r1[i] - r2[i]) : (r2[i] - r1[i])) <= tol) &&
(((g1[i] > g2[i]) ? (g1[i] - g2[i]) : (g2[i] - g1[i])) <= tol) &&
(((b1[i] > b2[i]) ? (b1[i] - b2[i]) : (b2[i] - b1[i])) <= tol))
continue;
printf("%3zu (%02x) :: %lf - %lf ---- %lf - %lf ---- %lf - %lf\n",
i, i, r1[i], r2[i], g1[i], g2[i], b1[i], b2[i]);
}
}
static double make_double(double x)
{
return x * 2;
}
/**
* Test libclut
*
* @return 0: All tests passed
* 1: At east one test fail
* 2: An error occurred
*/
int main(int argc, char *argv[])
{
struct clut t1, t2, t3;
struct dclut d1, d2;
size_t i, j;
int rc = 0;
double param;
t1. red_size = t2. red_size = t3. red_size = d1. red_size = d2. red_size = 256;
t1.green_size = t2.green_size = t3.green_size = d1.green_size = d2.green_size = 256;
t1. blue_size = t2. blue_size = t3. blue_size = d1. blue_size = d2. blue_size = 256;
if (!(t1.red = malloc(3 * 256 * sizeof(uint16_t)))) goto fail;
if (!(t2.red = malloc(3 * 256 * sizeof(uint16_t)))) goto fail;
if (!(t3.red = malloc(3 * 256 * sizeof(uint16_t)))) goto fail;
if (!(d1.red = malloc(3 * 256 * sizeof(double)))) goto fail;
if (!(d2.red = malloc(3 * 256 * sizeof(double)))) goto fail;
t1.blue = (t1.green = t1.red + 256) + 256;
t2.blue = (t2.green = t2.red + 256) + 256;
t3.blue = (t3.green = t3.red + 256) + 256;
d1.blue = (d1.green = d1.red + 256) + 256;
d2.blue = (d2.green = d2.red + 256) + 256;
libclut_start_over(&t1, UINT16_MAX, uint16_t, 1, 1, 1);
for (i = 0; i < 256; i++)
t2.blue[i] = t2.green[i] = t2.red[i] = (uint16_t)((i << 8) | i);
if (clutcmp(&t1, &t2, 0))
printf("libclut_start_over failed\n"), rc = 1;
for (i = 0, j = 255; i < 256; i++, j--)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)i;
t2.blue[j] = t2.green[j] = t2.red[j] = (uint16_t)i;
}
libclut_negative(&t1, UINT16_MAX, uint16_t, 1, 1, 1);
if (clutcmp(&t1, &t2, 0))
printf("libclut_negative failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)i;
t2.blue[i] = t2.green[i] = t2.red[i] = UINT16_MAX - (uint16_t)i;
}
libclut_rgb_invert(&t1, UINT16_MAX, uint16_t, 1, 1, 1);
if (clutcmp(&t1, &t2, 0))
printf("libclut_rgb_invert failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)((i << 8) | i);
t2.blue[i] = 1 + (t2.green[i] = 1 + (t2.red[i] = 1000 + (uint16_t)i));
}
libclut_rgb_limits(&t1, UINT16_MAX, uint16_t, 1000, 1255, 1001, 1256, 1002, 1257);
if (clutcmp(&t1, &t2, 0))
printf("libclut_rgb_limits failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)i;
t2.red[i] = t1.blue[i] * 2;
t2.green[i] = t1.green[i] * 3;
t2.blue[i] = t1.blue[i] * 4;
}
libclut_rgb_brightness(&t1, UINT16_MAX, uint16_t, 2, 3, 4);
if (clutcmp(&t1, &t2, 0))
printf("libclut_rgb_brightness failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)i;
t2.blue[i] = t2.green[i] = 2 * (t2.red[i] = (uint16_t)i);
}
libclut_manipulate(&t1, UINT16_MAX, uint16_t, (double (*)(double))(NULL), make_double, make_double);
if (clutcmp(&t1, &t2, 0))
printf("libclut_manipulate failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)i;
t2.blue[i] = t2.green[i] = t2.red[i] = (uint16_t)(pow((double)i / UINT16_MAX, 1.0 / 1.1) * UINT16_MAX);
}
libclut_gamma(&t1, UINT16_MAX, uint16_t, 1.1, 1.1, 1.1);
if (clutcmp(&t1, &t2, 0))
printf("libclut_gamma failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)((i << 8) | i);
t2.blue[i] = t2.green[i] = t2.red[i] = (t1.red[i] - UINT16_MAX / 2) / 2 + UINT16_MAX / 2;
}
libclut_rgb_contrast(&t1, UINT16_MAX, uint16_t, 0.5, 0.5, 0.5);
if (clutcmp(&t1, &t2, 1))
printf("libclut_rgb_contrast failed\n"), rc = 1;
param = 2.0;
for (i = 0; i < 256; i++)
{
double x = i / 255.0;
if (i % 255)
{
x = 1.0 / x - 1.0;
x = log(x);
x = 0.5 - x / param;
}
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)((i << 8) | i);
t2.blue[i] = t2.green[i] = t2.red[i] = (uint16_t)(x * UINT16_MAX);
}
libclut_sigmoid(&t1, UINT16_MAX, uint16_t, ¶m, ¶m, ¶m);
if (clutcmp(&t1, &t2, 0))
printf("libclut_sigmoid failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)((i << 8) | i);
t2.blue[i] = t2.green[i] = t2.red[i] = t1.red[i & ~15] | (t1.red[i & ~15] >> 4);
}
libclut_lower_resolution(&t1, UINT16_MAX, uint16_t, 16, 0, 16, 0, 16, 0);
if (clutcmp(&t1, &t2, 0))
printf("libclut_lower_resolution (x) failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)((i << 8) | i);
t2.blue[i] = t2.green[i] = t2.red[i] = (uint16_t)(i / 255.0 * 15.0 + 0.5) * UINT16_MAX / 15;
}
libclut_lower_resolution(&t1, UINT16_MAX, uint16_t, 0, 16, 0, 16, 0, 16);
if (clutcmp(&t1, &t2, 0))
printf("libclut_lower_resolution (y) failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = (uint16_t)((i << 8) | i);
t2.blue[i] = t2.green[i] = t2.red[i] = (uint16_t)((i << 8) | i);
}
libclut_linearise(&t1, UINT16_MAX, uint16_t, 1, 1, 1);
if (!clutcmp(&t1, &t2, 1))
printf("libclut_linearise failed\n"), rc = 1;
libclut_standardise(&t1, UINT16_MAX, uint16_t, 1, 1, 1);
if (clutcmp(&t1, &t2, 12))
printf("libclut_linearise/libclut_standardise failed\n"), rc = 1;
/* High error rate, especially at low values, are expected due
* to low precision and truncated values rather rounded values. */
for (i = 0; i < 256; i++)
{
d1.blue[i] = d1.green[i] = d1.red[i] = (i & 1) ? -1.0 : 2.0;
d2.blue[i] = d2.green[i] = d2.red[i] = (i & 1) ? 0.0 : 1.0;
}
libclut_clip(&d1, 1.0, double, 1, 1, 1);
if (dclutcmp(&d1, &d2, 0))
printf("libclut_clip failed\n"), rc = 1;
for (i = 0; i < 256; i++)
{
t1.blue[i] = t1.green[i] = t1.red[i] = UINT16_MAX - (uint16_t)((i << 8) | i);
t2.blue[i] = t2.green[i] = t2.red[i] = (uint16_t)(pow((double)i / 255.0, 1.0 / 1.1) * UINT16_MAX);
}
for (i = 0; i < 256; i++)
t3.blue[i] = t3.green[i] = t3.red[i] = t2.red[255 - i];
libclut_apply(&t1, UINT16_MAX, uint16_t, &t2, UINT16_MAX, uint16_t, 1, 1, 1);
if (clutcmp(&t1, &t3, 0))
printf("libclut_apply failed\n"), rc = 1;
if (!rc)
printf("everything is fine\n");
free(t1.red);
free(t2.red);
free(t3.red);
free(d1.red);
free(d2.red);
return rc;
fail:
perror(*argv);
return 2;
(void) argc;
}
/*
TODO test these too: (also add this to the makefile)
libclut_cie_contrast
libclut_cie_brightness
libclut_cie_invert
libclut_cie_limits
libclut_cie_manipulate
libclut_cie_apply
*/
