/*
 *              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;
}
/* ---------------------------------------------------------------- */