FloatImg4PythonBinding/lib/metadata.c

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/*
* 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() */
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/* ---------------------------------------------------------------- */
static void puts_magic_8(char *ptr, FILE *fp)
{
int foo;
fputs("magic = ", fp);
fputc('[', fp);
for (foo=0; foo<8; foo++) {
fputc(ptr[foo], fp);
}
fputc(']', fp); fputc('\n', fp);
fflush(fp);
}
/* ---------------------------------------------------------------- */
int fimg_show_metadata(FimgMetaData *pmd, char *title, int notused)
{
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int foo;
fprintf(stderr, ">>> %s ( %p '%s' 0x%08x )\n", __func__,
pmd, title, notused);
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if (verbosity) {
fprintf(stderr, "sizeof(metadata) = %ld\n", \
sizeof(FimgMetaData));
puts_magic_8(pmd->magic, stderr);
}
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/* SHOW TIMESTAMP HERE */
fprintf(stderr, "creator pid = %ld\n", pmd->pid);
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 = 0x%x\n", pmd->origin);
fputs("reserved words are:\n ", stderr);
for (foo=0; foo<8; foo++) {
fprintf(stderr, " 0x%08x", pmd->reserved[foo]);
if (3 == foo) fputs("\n ", stderr);
}
fputc('\n', stderr);
return 0;
}
/* ---------------------------------------------------------------- */
int fimg_default_metadata(FimgMetaData *pmd)
{
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memset(pmd, 0, sizeof(FimgMetaData));
memcpy(pmd->magic, "metadata", 8);
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/* set timestamp here ? */
pmd->pid = getpid();
pmd->count = 0;
pmd->fval = 255.0;
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strcpy(pmd->idcam, "<unknow>");
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pmd->origin = 0x55555555;
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return 0;
}
/* ---------------------------------------------------------------- */
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int fimg_get_metadata_from_file(char *fname, FimgMetaData *pmd)
{
FILE *fp;
FimgFileHead filehead;
FimgMetaData metadata;
int foo;
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// #if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( '%s' %p )\n", __func__, fname, pmd);
// #endif
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if (NULL==(fp=fopen(fname, "r"))) {
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perror(fname);
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return -1;
}
foo = fread(&filehead, sizeof(FimgFileHead), 1, fp);
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if (1 != foo) {
fprintf(stderr, "short read (%d) on %s (head)\n", foo, fname);
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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]) {
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fprintf(stderr, "file '%s' have no metadata.\n", fname);
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fclose(fp);
return -4;
}
foo = fread(&metadata, sizeof(FimgMetaData), 1, fp);
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if (1 != foo) {
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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);
return -6;
}
memcpy(pmd, &metadata, sizeof(FimgMetaData));
return 0;
}
/* ---------------------------------------------------------------- */