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app: add babl based conversions along cpercep 

This does not change it's behavior but asserts the results of equivalent
conversions.
This commit is contained in:
Øyvind Kolås 2012-04-08 01:25:30 +02:00 committed by Michael Natterer
parent c9b2db55d1
commit 83c21ffcc3
1 changed files with 33 additions and 0 deletions
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33
app/base/cpercep.c
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@ -56,6 +56,8 @@ from the Author.
#include "config.h"
#include <babl/babl.h>
#include <glib-object.h>
#include <libgimpmath/gimpmath.h>
@ -458,6 +460,7 @@ cpercep_rgb_to_space (double inr,
double *outg,
double *outb)
{
float input[3] = {inr/255.0f, ing/255.0f, inb/255.0f};
#ifdef APPROX
#ifdef SANITY
/* ADM extra sanity */
@ -528,6 +531,19 @@ cpercep_rgb_to_space (double inr,
*outr = inr;
*outg = ing;
*outb = inb;
{
float output[3];
babl_process (babl_fish (babl_format ("R'G'B' float"),
babl_format ("CIE Lab float")),
input, output, 1);
if (fabs (output[0]-inr) > 0.1)
g_warning ("eeek2 component 0 %f", output[0]-inr);
if (fabs (output[1]-ing) > 0.1)
g_warning ("eeek2 component 1 %f", output[1]-inb);
if (fabs (output[2]-inb) > 0.1)
g_warning ("eeek2 component 2 %f", output[2]-inb);
}
}
@ -539,6 +555,7 @@ cpercep_space_to_rgb (double inr,
double *outg,
double *outb)
{
float input[3] = {inr, ing, inb};
lab_to_xyz(&inr, &ing, &inb);
#ifdef SANITY
@ -577,6 +594,22 @@ cpercep_space_to_rgb (double inr,
inb = 255.0F * pow(inb, REV_GAMMA);
#endif
{
float output[3];
babl_process (babl_fish (babl_format ("CIE Lab float"),
babl_format ("R'G'B' float")),
input, output, 1);
output[0] *= 255;
output[1] *= 255;
output[2] *= 255;
if (fabs (output[0]-inr) > 0.01)
g_warning ("eeek component 0");
if (fabs (output[1]-ing) > 0.01)
g_warning ("eeek component 1");
if (fabs (output[2]-inb) > 0.01)
g_warning ("eeek component 2");
}
*outr = inr;
*outg = ing;
*outb = inb;