Bibliothèque de traitements d'images en virgule flottante. http://la.buvette.org/photos/cumul/
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/*
* UGLY CODE INSIDE
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "../floatimg.h"
#include "funcs.h"
extern int verbosity;
/*
* Be careful, these functions are not yet fireproof,
* and calling conventions are fluctuating.
*/
/* --------------------------------------------------------------------- */
int x_upscaler_0(unsigned char *src, int w, int h, FloatImg *d)
{
int x, y, xx, yy, ox, oy;
// float *rp, *gp, *bp;
float r, g, b;
static unsigned short modz;
/*
* check in image sizes are correct
*/
if ( d->width != w*2 || d->height != h*2 ) {
fprintf(stderr, "%s: dimension error\n", __func__);
fprintf(stderr, "\tw = %d h = %d\n", w, h);
fprintf(stderr, "\tdest image is %dx%d\n", d->width, d->height);
#if MUST_ABORT
abort();
#endif
return -2;
}
ox = ! ! (modz & 2);
oy = ! ! (modz & 1);
if (verbosity>2) fprintf(stderr, "%s %5d %d %d\n", __func__,
modz, ox, oy);
for (y=0; y<h; y++) {
yy = (y*2) + oy;
for (x=0; x<w; x++) {
xx = (x*2) + ox;
r = (float)*src++;
g = (float)*src++;
b = (float)*src++;
/* may be, here, we can speed up the job */
fimg_add_rgb(d, xx, yy, r, g, b);
/* or may be jump directly to asm and SSE2
http://www.mikekohn.net/stuff/image_processing.php */
}
}
modz++; /* next displacment index */
if ( ! (modz & 0x03)) {
d->count++; /* one more frame in the accumulator */
}
return -1;
}
/* --------------------------------------------------------------------- */
int x_rgb2fimg(unsigned char *src, int w, int h, FloatImg *d)
{
int iter, size;
float *rp, *gp, *bp;
size = w * h;
rp = d->R, gp = d->G, bp = d->B;
for (iter=0; iter<size; iter++) {
*rp++ = (float)*src++;
*gp++ = (float)*src++;
*bp++ = (float)*src++;
}
return 0;
}
/* --------------------------------------------------------------------- */
int x_add_rgb2fimg(unsigned char *src, int w, int h, FloatImg *d)
{
int iter, size;
float *rp, *gp, *bp;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %d %d %p )\n", __func__,
src, w, h, d);
#endif
size = w * h;
rp = d->R, gp = d->G, bp = d->B;
for (iter=0; iter<size; iter++) {
*rp++ += (float)*src++;
*gp++ += (float)*src++;
*bp++ += (float)*src++;
}
d->count++; /* one more frame in the accumulator */
return 0;
}
/* --------------------------------------------------------------------- */
int x_rgb2file(unsigned char *src, int w, int h, char *fname)
{
FloatImg buff;
int foo;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %d %d '%s' )\n", __func__,
src, w, h, fname);
#endif
foo = fimg_create(&buff, w, h, FIMG_TYPE_RGB);
if (foo) {
fprintf(stderr, "Crash on create in %s %s\n", __FILE__, __func__);
exit(1);
}
foo = x_rgb2fimg(src, w, h, &buff);
if (foo) {
fprintf(stderr, "Crash on bit massage in %s %s\n", __FILE__, __func__);
exit(1);
}
foo = fimg_dump_to_file(&buff, fname, 0);
if (foo) {
fprintf(stderr, "Crash on dump in %s %s\n", __FILE__, __func__);
exit(1);
}
fimg_destroy(&buff);
return -1;
}
/* --------------------------------------------------------------------- */