/* * metadata.c */ #include #include #include #include #include #include #include "../floatimg.h" extern int verbosity; /* must be declared around main() */ /* ---------------------------------------------------------------- */ 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) { int foo; double doubletime; #if DEBUG_LEVEL fprintf(stderr, ">>> %s ( %p '%s' 0x%08x )\n", __func__, pmd, title, notused); #endif if (verbosity) { fprintf(stderr, "sizeof(metadata) = %ld\n", \ sizeof(FimgMetaData)); puts_magic_8(pmd->magic, stderr); } /* SHOW TIMESTAMP HERE */ fprintf(stderr, "seconds sc. epoch = %ld\n", pmd->timestamp.tv_sec); doubletime = (double)pmd->timestamp.tv_sec + \ (double)pmd->timestamp.tv_usec / 1e6; fprintf(stderr, "dtime of day = %e\n", doubletime); fprintf(stderr, "creator pid = %ld\n", pmd->cpid); 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) { int foo; struct timeval tvl; memset(pmd, 0, sizeof(FimgMetaData)); memcpy(pmd->magic, "metadata", 8); /* set timestamp here ? */ /* CHALLENGE ACCEPTED */ memset(&tvl, 0, sizeof(struct timeval)); foo = gettimeofday(&tvl, NULL); if (foo) { /* error on get time of day ? */ perror("omg"); } else { if (verbosity) { fprintf(stderr, "Time of day %12ld %12ld\n", \ tvl.tv_sec, tvl.tv_usec); } memcpy(&(pmd->timestamp), &tvl, sizeof(struct timeval)); } pmd->cpid = getpid(); pmd->count = 0; pmd->fval = 255.0; strcpy(pmd->idcam, ""); pmd->origin = 0xdeadbeef; return 0; } /* ---------------------------------------------------------------- */ 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"))) { perror(fname); return -1; } foo = fread(&filehead, sizeof(FimgFileHead), 1, fp); if (1 != foo) { fprintf(stderr, "short read (%d) on %s (head)\n", foo, 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, "file '%s' have no metadata.\n", fname); fclose(fp); return -4; } foo = fread(&metadata, sizeof(FimgMetaData), 1, fp); if (1 != 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); puts_magic_8(metadata.magic, stderr); return -6; } memcpy(pmd, &metadata, sizeof(FimgMetaData)); return 0; } /* ---------------------------------------------------------------- */