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/*
* Test the new RGB color separation code for CUPS.
*
* Copyright 2007-2011 by Apple Inc.
* Copyright 1993-2006 by Easy Software Products, All Rights Reserved.
*
* These coded instructions, statements, and computer programs are the
* property of Apple Inc. and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "COPYING"
* which should have been included with this file.
*
* Contents:
*
* main() - Do color rgb tests.
* test_gray() - Test grayscale rgbs...
* test_rgb() - Test color rgbs...
*/
/*
* Include necessary headers.
*/
#include <config.h>
#include <string.h>
#include <ctype.h>
#include "driver.h"
#include <sys/stat.h>
#ifdef USE_LCMS1
# include <lcms.h>
#endif /* USE_LCMS1 */
void test_gray(cups_sample_t *samples, int num_samples,
int cube_size, int num_comps, const char *basename);
void test_rgb(cups_sample_t *samples, int num_samples,
int cube_size, int num_comps,
const char *basename);
/*
* 'main()' - Do color rgb tests.
*/
int /* O - Exit status */
main(int argc, /* I - Number of command-line arguments */
char *argv[]) /* I - Command-line arguments */
{
static cups_sample_t CMYK[] = /* Basic 4-color sep */
{
/*{ r, g, b }, { C, M, Y, K }*/
{ { 0, 0, 0 }, { 0, 0, 0, 255 } },
{ { 255, 0, 0 }, { 0, 255, 240, 0 } },
{ { 0, 255, 0 }, { 200, 0, 200, 0 } },
{ { 255, 255, 0 }, { 0, 0, 240, 0 } },
{ { 0, 0, 255 }, { 200, 200, 0, 0 } },
{ { 255, 0, 255 }, { 0, 200, 0, 0 } },
{ { 0, 255, 255 }, { 200, 0, 0, 0 } },
{ { 255, 255, 255 }, { 0, 0, 0, 0 } }
};
/*
* Make the test directory...
*/
mkdir("test", 0755);
/*
* Run tests for CMYK and CMYK separations...
*/
test_rgb(CMYK, 8, 2, 4, "test/rgb-cmyk");
test_gray(CMYK, 8, 2, 4, "test/gray-cmyk");
/*
* Return with no errors...
*/
return (0);
}
/*
* 'test_gray()' - Test grayscale rgbs...
*/
void
test_gray(cups_sample_t *samples, /* I - Sample values */
int num_samples, /* I - Number of samples */
int cube_size, /* I - Cube size */
int num_comps, /* I - Number of components */
const char *basename) /* I - Base filename of output */
{
int i; /* Looping var */
char filename[255]; /* Output filename */
char line[255]; /* Line from PPM file */
int width, height; /* Width and height of test image */
int x, y; /* Current coordinate in image */
int r, g, b; /* Current RGB color */
unsigned char input[7000]; /* Line to rgbarate */
unsigned char output[48000], /* Output rgb data */
*outptr; /* Pointer in output */
FILE *in; /* Input PPM file */
FILE *out[CUPS_MAX_CHAN];
/* Output PGM files */
FILE *comp; /* Composite output */
cups_rgb_t *rgb; /* Color separation */
/*
* Open the test image...
*/
in = fopen("image.pgm", "rb");
while (fgets(line, sizeof(line), in) != NULL)
if (isdigit(line[0]))
break;
sscanf(line, "%d%d", &width, &height);
fgets(line, sizeof(line), in);
/*
* Create the color rgb...
*/
rgb = cupsRGBNew(num_samples, samples, cube_size, num_comps);
/*
* Open the color rgb files...
*/
for (i = 0; i < num_comps; i ++)
{
sprintf(filename, "%s%d.pgm", basename, i);
out[i] = fopen(filename, "wb");
fprintf(out[i], "P5\n%d %d 255\n", width, height);
}
sprintf(filename, "%s.ppm", basename);
comp = fopen(filename, "wb");
fprintf(comp, "P6\n%d %d 255\n", width, height);
/*
* Read the image and do the rgbs...
*/
for (y = 0; y < height; y ++)
{
fread(input, width, 1, in);
cupsRGBDoGray(rgb, input, output, width);
for (x = 0, outptr = output; x < width; x ++, outptr += num_comps)
{
for (i = 0; i < num_comps; i ++)
putc(255 - outptr[i], out[i]);
r = 255;
g = 255;
b = 255;
r -= outptr[0];
g -= outptr[1];
b -= outptr[2];
r -= outptr[3];
g -= outptr[3];
b -= outptr[3];
if (num_comps > 4)
{
r -= outptr[4] / 2;
g -= outptr[5] / 2;
}
if (num_comps > 6)
{
r -= outptr[6] / 2;
g -= outptr[6] / 2;
b -= outptr[6] / 2;
}
if (r < 0)
putc(0, comp);
else
putc(r, comp);
if (g < 0)
putc(0, comp);
else
putc(g, comp);
if (b < 0)
putc(0, comp);
else
putc(b, comp);
}
}
for (i = 0; i < num_comps; i ++)
fclose(out[i]);
fclose(comp);
fclose(in);
cupsRGBDelete(rgb);
}
/*
* 'test_rgb()' - Test color rgbs...
*/
void
test_rgb(cups_sample_t *samples, /* I - Sample values */
int num_samples, /* I - Number of samples */
int cube_size, /* I - Cube size */
int num_comps, /* I - Number of components */
const char *basename) /* I - Base filename of output */
{
int i; /* Looping var */
char filename[255]; /* Output filename */
char line[255]; /* Line from PPM file */
int width, height; /* Width and height of test image */
int x, y; /* Current coordinate in image */
int r, g, b; /* Current RGB color */
unsigned char input[7000]; /* Line to rgbarate */
unsigned char output[48000], /* Output rgb data */
*outptr; /* Pointer in output */
FILE *in; /* Input PPM file */
FILE *out[CUPS_MAX_CHAN];
/* Output PGM files */
FILE *comp; /* Composite output */
cups_rgb_t *rgb; /* Color separation */
/*
* Open the test image...
*/
in = fopen("image.ppm", "rb");
while (fgets(line, sizeof(line), in) != NULL)
if (isdigit(line[0]))
break;
sscanf(line, "%d%d", &width, &height);
fgets(line, sizeof(line), in);
/*
* Create the color rgb...
*/
rgb = cupsRGBNew(num_samples, samples, cube_size, num_comps);
/*
* Open the color rgb files...
*/
for (i = 0; i < num_comps; i ++)
{
sprintf(filename, "%s%d.pgm", basename, i);
out[i] = fopen(filename, "wb");
fprintf(out[i], "P5\n%d %d 255\n", width, height);
}
sprintf(filename, "%s.ppm", basename);
comp = fopen(filename, "wb");
fprintf(comp, "P6\n%d %d 255\n", width, height);
/*
* Read the image and do the rgbs...
*/
for (y = 0; y < height; y ++)
{
fread(input, width, 3, in);
cupsRGBDoRGB(rgb, input, output, width);
for (x = 0, outptr = output; x < width; x ++, outptr += num_comps)
{
for (i = 0; i < num_comps; i ++)
putc(255 - outptr[i], out[i]);
r = 255;
g = 255;
b = 255;
r -= outptr[0];
g -= outptr[1];
b -= outptr[2];
r -= outptr[3];
g -= outptr[3];
b -= outptr[3];
if (num_comps > 4)
{
r -= outptr[4] / 2;
g -= outptr[5] / 2;
}
if (num_comps > 6)
{
r -= outptr[6] / 2;
g -= outptr[6] / 2;
b -= outptr[6] / 2;
}
if (r < 0)
putc(0, comp);
else
putc(r, comp);
if (g < 0)
putc(0, comp);
else
putc(g, comp);
if (b < 0)
putc(0, comp);
else
putc(b, comp);
}
}
for (i = 0; i < num_comps; i ++)
fclose(out[i]);
fclose(comp);
fclose(in);
cupsRGBDelete(rgb);
}
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