317 lines
6.9 KiB
C
317 lines
6.9 KiB
C
/*
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* fimg-core.c
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*
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "string.h"
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#include "../floatimg.h"
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extern int verbosity; /* must be declared around main() */
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/* ---------------------------------------------------------------- */
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int fimg_type_is_valid(int type)
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{
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switch (type) {
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case FIMG_TYPE_GRAY:
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case FIMG_TYPE_RGB:
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case FIMG_TYPE_RGBA: return 1;
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}
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return 0;
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}
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/* --------------------------------------------------------------------- */
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char *fimg_str_type(int type)
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{
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switch (type) {
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case FIMG_TYPE_GRAY: return "gray";
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case FIMG_TYPE_RGB: return "rgb";
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case FIMG_TYPE_RGBA: return "rgba";
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}
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return "???";
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}
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/* --------------------------------------------------------------------- */
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int fimg_print_version(int k)
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{
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fprintf(stderr, "*** FloatImg library, alpha v%d (%s, %s)\n",
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FIMG_VERSION, __DATE__, __TIME__);
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if (51 == k) {
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puts("+--------------------+");
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puts("| Pastis is coming. |");
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puts("+--------------------+");
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}
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return 0;
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}
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/* --------------------------------------------------------------------- */
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void fimg_printhead(FloatImg *h)
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{
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printf("%5d %5d %2d %p %p %p %p\n", h->width, h->height, h->type,
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h->R, h->G, h->B, h->A);
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}
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/* --------------------------------------------------------------------- */
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int fimg_describe(FloatImg *head, char *txt)
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{
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printf("----- '%s' at %p -----\n", txt, head);
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if( ! fimg_type_is_valid(head->type) ) {
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fprintf(stderr, "*** %s *** type %d invalid *** %s ***\n",
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__func__, head->type, txt);
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return -1;
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}
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printf(" type %d %s\n", head->type, fimg_str_type(head->type));
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printf(" dims %d x %d\n",
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head->width, head->height);
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printf(" fval/count %f %d\n", head->fval, head->count);
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printf(" pixels@ %p %p %p %p\n",
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head->R, head->G, head->B, head->A);
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return 0;
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}
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/* ---------------------------------------------------------------- */
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/*
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* values for the parameter 't' are defined in 'floatimg.h'
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*/
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int fimg_create(FloatImg *fimg, int w, int h, int t)
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{
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int surface, size;
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float *fptr;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( %p %d %d %d )\n", __func__, fimg, w, h, t);
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#endif
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if ( ! fimg_type_is_valid(t) ) {
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return -2;
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}
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/*
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* what to do if we've got a descriptor for an image
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* already allocated ?
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*/
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memset(fimg, 0, sizeof(FloatImg));
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surface = w * h;
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size = surface * t * sizeof(float);
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#if DEBUG_LEVEL > 1
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fprintf(stderr, "surface is %d pixels, need %d bytes\n", surface, size);
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#endif
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fptr = (float *)malloc(size);
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if (NULL==fptr) {
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fprintf(stderr, "%s : no mem, exiting.\n", __func__);
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exit(1);
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}
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#if DEBUG_LEVEL > 1
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fprintf(stderr, " got %d bytes at %p\n", size, fptr);
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#endif
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fimg->width = w; fimg->height = h;
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fimg->type = t;
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fimg->R = fptr;
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if ( (t==FIMG_TYPE_RGB) || (t==FIMG_TYPE_RGBA) ) {
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fimg->G = fptr + surface;
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fimg->B = fptr + surface + surface;
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}
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if ( t==FIMG_TYPE_RGBA ) fimg->A = fptr + (3 * surface);
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/* ok this a really WTF fragment of code */
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return 0;
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}
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/* --------------------------------------------------------------------- */
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int fimg_destroy(FloatImg *fimg)
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{
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( %p )\n", __func__, fimg);
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#endif
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if (NULL == fimg) {
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fprintf(stderr, "%s : parameter is null\n", __func__);
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return -1;
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}
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if ( ! fimg_type_is_valid(fimg->type) ) {
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fprintf(stderr, "%s : type %d invalid\n", __func__,
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fimg->type);
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return -2;
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}
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if (NULL == fimg->R) {
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fprintf(stderr, "%s : %p already freed ?\n", __func__, fimg);
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return -3;
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}
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free(fimg->R);
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memset(fimg, 0, sizeof(FloatImg));
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return 0;
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}
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/* --------------------------------------------------------------------- */
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int fimg_clone(FloatImg *old, FloatImg *new, int flags)
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{
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int foo;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( %p %p 0x%x)\n", __func__, old, new, flags);
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#endif
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if ( ! fimg_type_is_valid(old->type) ) {
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fprintf(stderr, "invalid type %d in %s\n", old->type, __func__);
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return -2;
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}
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memset(new, 0, sizeof(FloatImg));
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foo = fimg_create(new, old->width, old->height, old->type);
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if (foo) {
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fprintf(stderr, "error %d in %s\n", foo, __func__);
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return -3;
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}
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if (flags & 0x01) {
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/* XXX copy all the pixels's datas */
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}
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return 0;
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}
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/* --------------------------------------------------------------------- */
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int fimg_copy_data(FloatImg *from, FloatImg *to)
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{
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int size;
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int foo;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( %p %p )\n", __func__, from, to);
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#endif
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foo = fimg_images_compatible(from, to);
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if (foo) {
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fprintf(stderr, "%s: pics not compatible (%d)\n", __func__, foo);
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return foo;
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}
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size = from->width * from->height * from->type * sizeof(float);
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memcpy(to->R, from->R, size);
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return 0;
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}
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/* --------------------------------------------------------------------- */
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int fimg_clear(FloatImg *fimg)
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{
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int size;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( %p )\n", __func__, fimg);
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#endif
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if ( ! fimg_type_is_valid(fimg->type) ) {
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fprintf(stderr, "invalid type %d in %s\n", fimg->type, __func__);
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return -2;
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}
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size = fimg->width * fimg->height * fimg->type * sizeof(float);
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memset(fimg->R, 0, size);
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return 0;
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}
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/* --------------------------------------------------------------------- */
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int fimg_rgb_constant(FloatImg *head, float r, float g, float b)
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{
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int idx, size;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( %p %f %f %f )\n", __func__, head,
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r, g, b);
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#endif
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if (head->type != FIMG_TYPE_RGB) {
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return -21;
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}
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size = head->width * head->height;
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for (idx=0; idx<size; idx++) {
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head->R[idx] = r;
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head->G[idx] = g;
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head->B[idx] = b;
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}
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return 0;
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}
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/* --------------------------------------------------------------------- */
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int fimg_plot_rgb (FloatImg *head, int x, int y,
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float r, float g, float b)
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{
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int offset;
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if (head->type < 3) {
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#if DEBUG_LEVEL > 1
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fprintf(stderr, "%s : type %d is bad.\n", __func__, head->type);
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#endif
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return -1;
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}
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offset = x + (y * head->width);
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#if DEBUG_LEVEL > 1
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fprintf(stderr, ">>> %s ( %p %d %d %f )\n", __func__, head, x, y, gray);
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fprintf(stderr, " offset %d\n", offset);
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#endif
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head->R[offset] = r;
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head->G[offset] = g;
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head->B[offset] = b;
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return 0;
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}
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/* ---------------------------------------------------------------- */
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int fimg_add_rgb(FloatImg *head, int x, int y, float r, float g, float b)
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{
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int offset;
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if (head->type != FIMG_TYPE_RGB) {
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#if DEBUG_LEVEL > 1
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fprintf(stderr, "%s : type %d is bad.\n", __func__, head->type);
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#endif
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return -1;
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}
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offset = x + (y * head->width);
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head->R[offset] += r;
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head->G[offset] += g;
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head->B[offset] += b;
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return 0;
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}
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/* --------------------------------------------------------------------- */
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/* nouveau 12 fevrier 2020 */
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int fimg_get_rgb(FloatImg *head, int x, int y, float *prgb)
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{
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int offset;
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if (head->type != FIMG_TYPE_RGB) {
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#if DEBUG_LEVEL > 1
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fprintf(stderr, "%s : type %d is bad.\n", __func__, head->type);
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#endif
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return -1;
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}
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offset = x + (y * head->width);
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prgb[0] = head->R[offset];
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prgb[1] = head->G[offset];
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prgb[2] = head->B[offset];
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return 0;
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}
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/* --------------------------------------------------------------------- */
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