Bibliothèque de traitements d'images en virgule flottante. http://la.buvette.org/photos/cumul/
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/*
* fimg-core.c
*
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include "string.h"
#include "../floatimg.h"
extern int verbosity; /* must be declared around main() */
/* ---------------------------------------------------------------- */
int fimg_type_is_valid(int type)
{
switch (type) {
case FIMG_TYPE_GRAY:
case FIMG_TYPE_RGB:
case FIMG_TYPE_RGBA:
case FIMG_TYPE_RGBZ: return 1;
}
return 0;
}
/* --------------------------------------------------------------------- */
char *fimg_str_type(int type)
{
switch (type) {
case FIMG_TYPE_GRAY: return "gray";
case FIMG_TYPE_RGB: return "rgb";
case FIMG_TYPE_RGBA: return "rgba";
case FIMG_TYPE_RGBZ: return "rgbz";
}
return "???";
}
/* --------------------------------------------------------------------- */
int fimg_print_version(int k)
{
fprintf(stderr, "*** FloatImg library, alpha %d (%s, %s)\n",
FIMG_VERSION, __DATE__, __TIME__);
if (51 == k) {
puts("+------------------------+");
puts("| Pastis is coming soon |");
puts("+------------------------+");
}
return 0;
}
/* --------------------------------------------------------------------- */
void fimg_print_sizeof(void)
{
fprintf(stderr, " sz FloatImg = %lu\n", sizeof(FloatImg));
fprintf(stderr, " sz filehead = %lu\n", sizeof(FimgFileHead));
fprintf(stderr, " sz filter = %lu\n", sizeof(FimgFilter3x3));
}
/* --------------------------------------------------------------------- */
void fimg_printdims(char *txt, FloatImg *pi)
{
fprintf(stderr, "# %s %dx%d\n", txt, pi->width, pi->height);
}
/* --------------------------------------------------------------------- */
void fimg_printhead(FloatImg *h)
{
printf("%5d %5d %2d %p %p %p %p\n", h->width, h->height, h->type,
h->R, h->G, h->B, h->A);
}
/* --------------------------------------------------------------------- */
int fimg_describe(FloatImg *head, char *txt)
{
printf("----- '%s' at %p -----\n", txt, head);
if( ! fimg_type_is_valid(head->type) ) {
fprintf(stderr, "*** %s *** type %d invalid *** %s ***\n",
__func__, head->type, txt);
return -1;
}
printf(" type %d %s\n", head->type, fimg_str_type(head->type));
printf(" dims %d x %d\n", head->width, head->height);
printf(" fval/count %f %d\n", head->fval, head->count);
printf(" pixels@ %p %p %p %p\n",
head->R, head->G, head->B, head->A);
return 0;
}
/* ---------------------------------------------------------------- */
static float *plane_alloc(int size)
{
float *fptr;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %d )\n", __func__, size);
#endif
fptr = calloc(size, sizeof(float));
if (NULL==fptr) {
fprintf(stderr, "no more memory available, ABEND\n");
abort();
}
return fptr;
}
/* ---------------------------------------------------------------- */
/*
* values for the parameter 'type' are defined in 'floatimg.h'
*/
int fimg_create(FloatImg *fimg, int w, int h, int type)
{
int size;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %d %d %d )\n", __func__, fimg, w, h, type);
#endif
if ( ! fimg_type_is_valid(type) ) {
fprintf(stderr, "%s: type %d invalid\n", __func__, type);
return -2;
}
/*
* what to do if we've got a descriptor for an image
* already allocated ? and how to check that ?
*/
memset(fimg, 0, sizeof(FloatImg));
size = w * h;
fimg->width = w; fimg->height = h;
fimg->type = type;
/* the red channel is allway allocated */
fimg->R = (float *)plane_alloc(size);
if (FIMG_TYPE_RGB == type) {
fimg->G = (float *)plane_alloc(size);
fimg->B = (float *)plane_alloc(size);
}
if (FIMG_TYPE_RGBA == type) {
fimg->G = (float *)plane_alloc(size);
fimg->B = (float *)plane_alloc(size);
fimg->A = (float *)plane_alloc(size);
}
return 0;
}
/* --------------------------------------------------------------------- */
int fimg_destroy(FloatImg *fimg)
{
#if DEBUG_LEVEL
fprintf(stderr, ">>> %-25s ( %p )\n", __func__, fimg);
#endif
if (NULL == fimg) {
fprintf(stderr, "%s : parameter is null\n", __func__);
return -1;
}
if ( ! fimg_type_is_valid(fimg->type) ) {
fprintf(stderr, "%s : type %d invalid\n", __func__,
fimg->type);
return -2;
}
if (NULL == fimg->R) {
fprintf(stderr, "%s : %p already freed ?\n", __func__, fimg);
return -3;
}
free(fimg->R);
if (FIMG_TYPE_RGB == fimg->type) {
free(fimg->G);
free(fimg->B);
}
memset(fimg, 0, sizeof(FloatImg));
return 0;
}
/* --------------------------------------------------------------------- */
int fimg_clone(FloatImg *old, FloatImg *new, int flags)
{
int foo, size;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %p 0x%x )\n", __func__, old, new, flags);
#endif
if ( ! fimg_type_is_valid(old->type) ) {
fprintf(stderr, "invalid type %d in %s\n", old->type, __func__);
return -2;
}
memset(new, 0, sizeof(FloatImg));
foo = fimg_create(new, old->width, old->height, old->type);
if (foo) {
fprintf(stderr, "error %d in %s\n", foo, __func__);
return -3;
}
if (flags & 0x01) { /* copy pixels values */
size = old->width * old->height * sizeof(float);
memcpy(new->R, old->R, size);
memcpy(new->G, old->G, size);
memcpy(new->B, old->B, size);
}
return 0;
}
/* --------------------------------------------------------------------- */
int fimg_copy_data(FloatImg *from, FloatImg *to)
{
int size;
int foo;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %p )\n", __func__, from, to);
#endif
foo = fimg_images_not_compatible(from, to);
if (foo) {
fprintf(stderr, "%s: pics not compatible (%d)\n", __func__, foo);
return foo;
}
size = from->width * from->height * sizeof(float);
memcpy(to->R, from->R, size);
memcpy(to->G, from->G, size);
memcpy(to->B, from->B, size);
return 0;
}
/* --------------------------------------------------------------------- */
int fimg_clear(FloatImg *fimg)
{
int size;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %-25s ( %p )\n", __func__, fimg);
#endif
if ( ! fimg_type_is_valid(fimg->type) ) {
fprintf(stderr, "invalid type %d in %s\n", fimg->type, __func__);
return -2;
}
size = fimg->width * fimg->height * sizeof(float);
memset(fimg->R, 0, size);
memset(fimg->G, 0, size);
memset(fimg->B, 0, size);
return 0;
}
/* --------------------------------------------------------------------- */
int fimg_rgb_constant(FloatImg *head, float r, float g, float b)
{
int idx, size;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %-25s ( %p %f %f %f )\n", __func__, head,
r, g, b);
#endif
if (head->type != FIMG_TYPE_RGB) {
return -21;
}
size = head->width * head->height;
for (idx=0; idx<size; idx++) {
head->R[idx] = r;
head->G[idx] = g;
head->B[idx] = b;
}
return 0;
}
/* --------------------------------------------------------------------- */
int fimg_plot_rgb (FloatImg *head, int x, int y,
float r, float g, float b)
{
int offset;
if (head->type < 3) {
#if DEBUG_LEVEL > 1
fprintf(stderr, "%s : type %d is bad.\n", __func__, head->type);
#endif
return -1;
}
offset = x + (y * head->width);
#if DEBUG_LEVEL > 1
fprintf(stderr, ">>> %s ( %p %d %d %f )\n", __func__, head, x, y, gray);
fprintf(stderr, " offset %d\n", offset);
#endif
head->R[offset] = r;
head->G[offset] = g;
head->B[offset] = b;
return 0;
}
/* ---------------------------------------------------------------- */
int fimg_add_rgb(FloatImg *head, int x, int y, float r, float g, float b)
{
int offset;
if (head->type != FIMG_TYPE_RGB) {
#if DEBUG_LEVEL > 1
fprintf(stderr, "%s : type %d is bad.\n", __func__, head->type);
#endif
return -1;
}
offset = x + (y * head->width);
head->R[offset] += r;
head->G[offset] += g;
head->B[offset] += b;
return 0;
}
/* --------------------------------------------------------------------- */
/* nouveau 12 fevrier 2020 */
int fimg_get_rgb(FloatImg *head, int x, int y, float *prgb)
{
int offset;
if (head->type != FIMG_TYPE_RGB) {
#if DEBUG_LEVEL > 1
fprintf(stderr, "%s : type %d is bad.\n", __func__, head->type);
#endif
return -1;
}
offset = x + (y * head->width);
prgb[0] = head->R[offset];
prgb[1] = head->G[offset];
prgb[2] = head->B[offset];
return 0;
}
/* --------------------------------------------------------------------- */
/* nouveau 24 mars 2020 - coronacoding */
int fimg_put_rgb(FloatImg *head, int x, int y, float *prgb)
{
int offset;
if (head->type != FIMG_TYPE_RGB) {
#if DEBUG_LEVEL > 1
fprintf(stderr, "%s : type %d is bad.\n", __func__, head->type);
#endif
return -1;
}
offset = x + (y * head->width);
head->R[offset] = prgb[0];
head->G[offset] = prgb[1];
head->B[offset] = prgb[2];
return 0;
}
/* --------------------------------------------------------------------- */