FloatImg4PythonBinding/lib/metadata.c

99 lines
2.3 KiB
C

/*
* metadata.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_show_metadata(FimgMetaData *pmd, char *title, int notused)
{
fprintf(stderr, ">>> %s ( %p '%s' 0x%08x )\n", __func__,
pmd, title, notused);
fprintf(stderr, "sizeof metadata = %ld\n", sizeof(FimgMetaData));
fprintf(stderr, "magic = '%8s'\n", pmd->magic);
/* TIMESTAMP HERE */
fprintf(stderr, "counter = %d\n", pmd->count);
fprintf(stderr, "float value = %.3f\n", pmd->fval);
fprintf(stderr, "id camera = '%s'\n", pmd->idcam);
fprintf(stderr, "origin = %d\n", pmd->origin);
return -1;
}
/* ---------------------------------------------------------------- */
int fimg_default_metadata(FimgMetaData *pmd)
{
memcpy(pmd->magic, "metadata", 8);
pmd->count = 0;
pmd->fval = 255.0;
strcpy(pmd->idcam, "<unknow>");
pmd->origin = 999;
return -1;
}
/* ---------------------------------------------------------------- */
int fimg_get_metadata_from_file(char *fname, FimgMetaData *pmd)
{
FILE *fp;
FimgFileHead filehead;
FimgMetaData metadata;
int foo;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %s %p )\n", __func__, fname, pmd);
#endif
if (NULL==(fp=fopen(fname, "r"))) {
return -1;
}
foo = fread(&filehead, sizeof(FimgFileHead), 1, fp);
if (sizeof(FimgFileHead) != foo) {
fprintf(stderr, "short read on %s (head)\n", fname);
fclose(fp);
return -2;
}
if (memcmp(filehead.magic, "FIMG", 4)) {
fprintf(stderr, "'%s' is not a fimg file.\n", fname);
fclose(fp);
return -3;
}
if ('a' != filehead.magic[4]) {
fprintf(stderr, "'%s' have no metadata.\n", fname);
fclose(fp);
return -4;
}
foo = fread(&metadata, sizeof(FimgMetaData), 1, fp);
if (sizeof(FimgMetaData) != foo) {
fprintf(stderr, "short read on %s (metadata)\n", fname);
fclose(fp);
return -5;
}
fclose(fp); /* got all needed datas */
if (memcmp(metadata.magic, "metadata", 8)) {
fprintf(stderr, "'%s' invalid metadata.\n", fname);
fclose(fp);
return -6;
}
memcpy(pmd, &metadata, sizeof(FimgMetaData));
return 0;
}
/* ---------------------------------------------------------------- */