148 lines
3.5 KiB
C
148 lines
3.5 KiB
C
/*
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* metadata.c
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <sys/time.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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static void puts_magic_8(char *ptr, FILE *fp)
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{
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int foo;
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fputs("magic = ", fp);
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fputc('[', fp);
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for (foo=0; foo<8; foo++) {
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fputc(ptr[foo], fp);
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}
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fputc(']', fp); fputc('\n', fp);
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fflush(fp);
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}
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/* ---------------------------------------------------------------- */
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int fimg_show_metadata(FimgMetaData *pmd, char *title, int notused)
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{
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int foo;
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double doubletime;
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fprintf(stderr, ">>> %s ( %p '%s' 0x%08x )\n", __func__,
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pmd, title, notused);
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if (verbosity) {
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fprintf(stderr, "sizeof(metadata) = %ld\n", \
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sizeof(FimgMetaData));
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puts_magic_8(pmd->magic, stderr);
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}
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/* SHOW TIMESTAMP HERE */
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fprintf(stderr, "seconds sc. epoch = %ld\n", pmd->timestamp.tv_sec);
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doubletime = (double)pmd->timestamp.tv_sec + \
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(double)pmd->timestamp.tv_usec / 1e6;
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fprintf(stderr, "dtime of day = %e\n", doubletime);
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fprintf(stderr, "creator pid = %ld\n", pmd->pid);
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fprintf(stderr, "counter = %d\n", pmd->count);
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fprintf(stderr, "float value = %.3f\n", pmd->fval);
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fprintf(stderr, "id camera = '%s'\n", pmd->idcam);
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fprintf(stderr, "origin = 0x%x\n", pmd->origin);
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fputs("reserved words are:\n ", stderr);
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for (foo=0; foo<8; foo++) {
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fprintf(stderr, " 0x%08x", pmd->reserved[foo]);
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if (3 == foo) fputs("\n ", stderr);
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}
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fputc('\n', stderr);
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return 0;
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}
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/* ---------------------------------------------------------------- */
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int fimg_default_metadata(FimgMetaData *pmd)
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{
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int foo;
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struct timeval tvl;
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memset(pmd, 0, sizeof(FimgMetaData));
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memcpy(pmd->magic, "metadata", 8);
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/* set timestamp here ? */
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/* CHALLENGE ACCEPTED */
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memset(&tvl, 0, sizeof(struct timeval));
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foo = gettimeofday(&tvl, NULL);
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if (foo) {
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/* error on get time of day ? */
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perror("omg");
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}
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else {
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fprintf(stderr, "Time of day %12ld %12ld\n", tvl.tv_sec, tvl.tv_usec);
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memcpy(&(pmd->timestamp), &tvl, sizeof(struct timeval));
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}
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pmd->pid = getpid();
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pmd->count = 0;
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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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}
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/* ---------------------------------------------------------------- */
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int fimg_get_metadata_from_file(char *fname, FimgMetaData *pmd)
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{
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FILE *fp;
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FimgFileHead filehead;
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FimgMetaData metadata;
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int foo;
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// #if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( '%s' %p )\n", __func__, fname, pmd);
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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 -1;
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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, "short read (%d) on %s (head)\n", foo, fname);
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fclose(fp);
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return -2;
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}
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if (memcmp(filehead.magic, "FIMG", 4)) {
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fprintf(stderr, "'%s' is not a fimg file.\n", fname);
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fclose(fp);
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return -3;
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}
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if ('a' != filehead.magic[4]) {
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fprintf(stderr, "file '%s' have no metadata.\n", fname);
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fclose(fp);
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return -4;
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}
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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);
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fclose(fp);
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return -5;
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}
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fclose(fp); /* got all needed datas */
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if (memcmp(metadata.magic, "metadata", 8)) {
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fprintf(stderr, "'%s' invalid metadata.\n", fname);
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return -6;
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}
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memcpy(pmd, &metadata, sizeof(FimgMetaData));
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return 0;
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}
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/* ---------------------------------------------------------------- */
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