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/* babl - dynamically extendable universal pixel conversion library.
* Copyright (C) 2005, 2017 Øyvind Kolås.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <math.h>
#include "babl-internal.h"
#define TOLERANCE 0.001
#define PIXELS 12
float source_buf [PIXELS * 4] =
{ 10.0, 1.0, 0.1, 1.0,
10.0, 1.0, 0.1, 0.5,
10.0, 1.0, 0.1, 0.1,
10.0, 1.0, 0.1, 0.01,
10.0, 1.0, 0.1, -0.01,
10.0, 1.0, 0.1, 1.5,
10.0, 1.0, 0.0001, 0.000001,
10.0, 1.0, 0.1 , -0.00001,
10.0, 1.0, 0.1, 0.0,
10.0, 1.0, 0.1, -0.5,
1000.0,10000.0, 100000.0, 0.001,
5000.0,50000.0, 500000.0, 0.01,
};
float bounce_buf [PIXELS * 4];
float destination_buf [PIXELS * 4];
static int
test (void)
{
int i;
int OK = 1;
babl_process (babl_fish ("RGBA float", "RaGaBaA float"),
source_buf, bounce_buf,
PIXELS);
babl_process (babl_fish ("RaGaBaA float", "RGBA float"),
bounce_buf, destination_buf,
PIXELS);
for (i = 0; i < PIXELS; i++)
{
for (int c = 0; c < 4; c++)
{
if (fabs (destination_buf[i*4+c] - source_buf[i*4+c]) > TOLERANCE)
{
babl_log ("separate alpha %i.%i: %.9f!=%.9f(ref) ", i, c, destination_buf[i*4+c],
source_buf[i*4+c]);
OK = 0;
}
// fprintf (stdout, "%.19f ", destination_buf[i*4+c]);
}
// fprintf (stdout, "\n");
}
fprintf (stdout, "\n");
babl_process (babl_fish ("RaGaBaA float", "RGBA float"),
source_buf, bounce_buf,
PIXELS);
babl_process (babl_fish ("RGBA float", "RaGaBaA float"),
bounce_buf, destination_buf,
PIXELS);
for (i = 0; i < PIXELS; i++)
{
for (int c = 0; c < 4; c++)
{
if (fabs (destination_buf[i*4+c] - source_buf[i*4+c]) > TOLERANCE)
{
babl_log ("associatd-alpha %i.%i: %.9f!=%.9f(ref) ", i, c, destination_buf[i*4+c],
source_buf[i*4+c]);
OK = 0;
}
// fprintf (stdout, "%.19f ", destination_buf[i*4+c]);
}
// fprintf (stdout, "\n");
}
if (!OK)
return -1;
return 0;
}
int
main (void)
{
babl_init ();
if (test ())
return -1;
babl_exit ();
return 0;
}
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