Bibliothèque de traitements d'images en virgule flottante. http://la.buvette.org/photos/cumul/
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FloatImg/Fonderie/interpolator.c

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/*
* INTERPOLATOR 2070
*
* +---------------------------------------+
* ! Do not use that software in real life !
* +---------------------------------------+
*
* imported in FloatImg Mon Nov 9 19:08:57 CET 2020
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <glob.h>
#include "../floatimg.h"
#include "glitches.h"
#include "crapulator.h"
#include "metriques.h"
// XXX #include "fonctions.h"
int verbosity;
int convert_to_gray; /* needed by fonctions.c */
/* -------------------------------------------------------------- */
/* on va essayer de trier l'ordre d'apparition des images
* selon une metrique approximative
*/
typedef struct {
int idx; /* in globbuf.gl_pathv[n] */
float value; /* from metric analyse */
} IdxValue;
static int cmp_idxvalues(const void *pa, const void *pb)
{
return ( ((IdxValue *)pa)->value > ((IdxValue *)pb)->value);
}
int tentative_triage(glob_t *ptr_glob, IdxValue **ptr_idxval)
{
int idx, foo, nombre;
float metrique;
char *filename;
IdxValue *idxvalues;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %p )\n", __func__, ptr_glob, ptr_idxval);
#endif
nombre = ptr_glob->gl_pathc;
/* allocate the array for the sorting action */
idxvalues = calloc(nombre, sizeof(IdxValue));
if (NULL==idxvalues) {
fprintf(stderr, "MEMORY ERROR in %s\n", __func__);
exit(1);
}
fprintf(stderr, "IdxValues array at %p\n", idxvalues);
*ptr_idxval = idxvalues;
/* compute all the needed values */
for (idx=0; idx<nombre; idx++) {
filename = ptr_glob->gl_pathv[idx];
foo = get_float_metric_from_file(filename, &metrique);
if (foo) {
fprintf(stderr, "%s: err %d get metric of '%s'\n", __func__,
foo, filename);
return -1;
}
fprintf(stderr, "%5d %s %f\n", idx, filename, metrique);
idxvalues[idx].idx = idx;
idxvalues[idx].value = metrique;
}
/* and now, we can massage all our datas */
qsort(idxvalues, nombre, sizeof(IdxValue), cmp_idxvalues);
for (idx=0; idx<nombre; idx++) {
printf("%5d %9.6f %5d\n", idx,
idxvalues[idx].value, idxvalues[idx].idx);
fflush(stdout);
}
return 0;
}
/* -------------------------------------------------------------- */
/*
* This is the mega working loop
*/
int interpolator(char *pattern, char *outdir, int Nsteps, int infx)
{
FloatImg A, B, Out, *pFirst, *pSecond;
glob_t globbuf;
int foo, idx, ipng, w, h, step;
int curpix;
int iarray[3];
char *cptr, line[200];
float coef, value;
IdxValue *idx_values;
fprintf(stderr, "\nfrom '%s' to '%s' with %d steps.\n",
pattern, outdir, Nsteps);
memset(&globbuf, 0, sizeof(glob_t));
foo = glob(pattern, 0, NULL, &globbuf);
fprintf(stderr, "globbing '%s' -> %d, %ld files found\n",
pattern, foo, globbuf.gl_pathc);
if (0 == globbuf.gl_pathc) {
fprintf(stderr, "%s : no file found, aborting\n", __func__);
return -1;
}
idx_values = NULL;
foo = tentative_triage(&globbuf, &idx_values);
fprintf(stderr, "\tTRI of %p -> %d\n\n", idx_values, foo);
foo = fimg_fileinfos(globbuf.gl_pathv[0], iarray);
if (FIMG_TYPE_RGB != iarray[2]) {
fprintf(stderr, "can work only on RGB fimg picture, was %d\n",
iarray[2]);
exit(1);
}
w = iarray[0], h = iarray[1];
fprintf(stderr, "first image size : %dx%d\n", w, h);
fimg_create(&A, w, h, 3); pFirst = &A;
fimg_create(&B, w, h, 3); pSecond = &B;
fimg_create(&Out, w, h, 3);
ipng = 0;
for (idx=0; idx<globbuf.gl_pathc; idx++) {
curpix = idx_values[idx].idx;
cptr = globbuf.gl_pathv[curpix]; /* aliasing filename */
/* read the next file in B */
fprintf(stderr, "%5d / %5ld : loading %s\r", idx,
globbuf.gl_pathc, cptr);
foo = fimg_load_from_dump(cptr, &B);
if (foo) {
fprintf(stderr, "load %s from dump -> %d\n", cptr, foo);
continue;
}
value = idx_values[idx].value;
/* here, we can insert the input filter */
/* OK try it ... */
foo = crapulator(&B, infx, value/2.0);
if (foo) {
fprintf(stderr, "crapulator failure %d\n", foo);
exit(1);
}
for (step=0; step<Nsteps; step++) {
coef = (float)step / (float)Nsteps;
fimg_interpolate(pSecond, pFirst, &Out, coef);
/* here we can insert the output filter */
if (rand() & 0x55) {
kill_a_few_lines(&Out, value/2.0, 5+(rand()%20));
kill_a_few_lines(&Out, 0.0, 5+(rand()%20));
}
sprintf(line, "%s/%05d.png", outdir, ipng);
foo = fimg_save_as_png(&Out, line, 0);
if (foo) {
fprintf(stderr, "err saving %s\n", line);
return -8;
}
ipng++;
}
#if 1
/* temporary hack : move datas */
fimg_copy_data(&B, &A);
#else
/* swap pointers to the two picz */
pTmp = pSecond;
pSecond = pFirst;
pFirst = pTmp;
/* XXX THIS CODE DON'T WORK !!! */
#endif
}
fprintf(stderr, "\ngenerated %d png files\n", ipng);
return 0;
}
/* -------------------------------------------------------------- */
void help(void)
{
puts("\tINTERPOLATOR\noptions:");
/* may be we can make options incoherent, like
* the options of 'fonderie' software ?
*/
exit(0);
}
/* -------------------------------------------------------------- */
int main (int argc, char *argv[])
{
int foo;
int nbrsteps = 9;
int opt;
fprintf(stderr, "*** %s : compiled by tTh, %s %s\n", __FILE__,
__DATE__, __TIME__);
fimg_print_version(2);
while ((opt = getopt(argc, argv, "hv")) != -1) {
switch(opt) {
case 'h': help(); break;
case 'v': verbosity++; break;
}
}
/* TO BE CONTINUED *****/
if (4 != argc) {
fprintf(stderr, "args: <in globpattern> <out dir> <nbrsteep>\n");
exit(1);
}
nbrsteps = atoi(argv[3]);
#define EFFECT 7
foo = interpolator(argv[1], argv[2], nbrsteps, EFFECT);
fprintf(stderr, "interpolator give a %d score\n", foo);
return 0;
}
/* -------------------------------------------------------------- */