193 lines
3.8 KiB
C
193 lines
3.8 KiB
C
/*
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* fimg-file.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 <errno.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_fileinfos(char *fname, int *datas)
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{
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FILE *fp;
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FimgFileHead filehead;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( '%s' %p )\n", __func__, fname, datas);
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#endif
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fp = fopen(fname, "r");
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if (NULL==fp) {
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perror(fname);
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return -1;
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}
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if (1 != fread(&filehead, sizeof(FimgFileHead), 1, fp)) {
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fprintf(stderr, "%s: %s bad read\n", __func__, fname);
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fclose(fp);
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return -2;
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}
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fclose(fp);
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#if DEBUG_LEVEL
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fprintf(stderr, " magic [%s]\n", filehead.magic);
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#endif
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if (strncmp(filehead.magic, "FIMG", 4)) {
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fprintf(stderr, "'%s' is not a fimg file.\n", fname);
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return -3;
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}
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datas[0] = filehead.w;
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datas[1] = filehead.h;
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datas[2] = filehead.t;
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return 0;
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}
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/* ---------------------------------------------------------------- */
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int fimg_dump_to_file(FloatImg *fimg, char *fname, int notused)
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{
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FILE *fp;
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int foo, nbre;
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FimgFileHead filehead;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( %p '%s' %d )\n", __func__, fimg,
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fname, notused);
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#endif
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if (3 != fimg->type) {
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fprintf(stderr, "%s : bad type %d\n", __func__, fimg->type);
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return -8;
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}
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fp = fopen(fname, "w");
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if (NULL==fp) {
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perror(fname);
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return -1;
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}
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memset(&filehead, 0, sizeof(filehead));
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strcpy(filehead.magic, "FIMG");
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filehead.w = fimg->width; filehead.h = fimg->height;
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filehead.t = fimg->type;
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foo = fwrite(&filehead, sizeof(FimgFileHead), 1, fp);
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if (1 != foo) {
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perror(fname);
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fclose(fp);
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return -2;
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}
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nbre = fimg->width*fimg->height*3;
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#if DEBUG_LEVEL
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fprintf(stderr, " %s : data at %p\n", __func__, fimg->R);
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#endif
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foo = fwrite(fimg->R, sizeof(float), nbre, fp);
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if (nbre != foo) {
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perror(fname);
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fclose(fp);
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return -3;
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}
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fclose(fp);
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return 0;
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}
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/* ---------------------------------------------------------------- */
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/*
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* load a dump in a pre-allocated FloatImg
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*/
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int fimg_load_from_dump(char *fname, FloatImg *where)
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{
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FILE *fp;
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int foo, nbre;
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FimgFileHead filehead;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( '%s' %p )\n", __func__, fname, where);
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#endif
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if (NULL==(fp = fopen(fname, "r"))) {
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perror(fname);
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return -15;
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}
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foo = fread(&filehead, sizeof(FimgFileHead), 1, fp);
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if (1 != foo) {
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fprintf(stderr, "%s: short read on '%s'\n", __func__, fname);
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fclose(fp);
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return -16;
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}
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/* check compatibility */
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if ( (filehead.w != where->width) ||
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(filehead.h != where->height) ||
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(filehead.t != where->type) ) {
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fprintf(stderr, "%s: file '%s' incompatible\n", __func__, fname);
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fclose(fp);
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return -17;
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}
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nbre = filehead.w*filehead.h*filehead.t; /* ugly quirk */
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foo = fread(where->R, sizeof(float), nbre, fp);
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if (nbre != foo) {
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fprintf(stderr, "%s: err read '%s' : %d\n", __func__, fname, foo);
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fclose(fp);
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return -18;
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}
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fclose(fp);
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return 0;
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}
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/* ---------------------------------------------------------------- */
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int fimg_create_from_dump(char *fname, FloatImg *head)
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{
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FILE *fp;
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int foo;
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FimgFileHead filehead;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %-25s ( '%s' %p )\n", __func__, fname, head);
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#endif
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fp = fopen(fname, "r");
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if (NULL==fp) {
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perror(fname);
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return -15;
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}
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foo = fread(&filehead, sizeof(FimgFileHead), 1, fp);
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if (1 != foo) {
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fprintf(stderr, "%s : short read\n", fname);
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fclose(fp);
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return -16;
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}
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#if DEBUG_LEVEL
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fprintf(stderr, "%s : got [ %d %d %d ] from '%s'\n", __func__,
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filehead.w, filehead.h, filehead.t, fname);
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#endif
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foo = fimg_create(head, filehead.w, filehead.h, filehead.t);
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if (foo) {
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fprintf(stderr, "%s : create -> %d\n", __func__, foo);
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return foo;
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}
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foo = fread(head->R, sizeof(float),
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filehead.w*filehead.h*filehead.t, fp);
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fclose(fp);
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return 0;
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}
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