diff options
Diffstat (limited to 'exiftran.c')
| -rw-r--r-- | exiftran.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/exiftran.c b/exiftran.c new file mode 100644 index 0000000..6db3fd2 --- /dev/null +++ b/exiftran.c @@ -0,0 +1,262 @@ +/* + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <stddef.h> +#include <unistd.h> +#include <errno.h> +#include <string.h> + +#include <libexif/exif-data.h> + +#include <jpeglib.h> +#include "jpeg/transupp.h" /* Support routines for jpegtran */ +#include "jpegtools.h" +#include "genthumbnail.h" + +/* ---------------------------------------------------------------------- */ + +static void dump_exif(FILE *out, ExifData *ed) +{ + const char *title, *value; + ExifEntry *ee; + int tag,i; + + for (i = 0; i < EXIF_IFD_COUNT; i++) { + fprintf(out," ifd %s\n", exif_ifd_get_name (i)); + for (tag = 0; tag < 0xffff; tag++) { + title = exif_tag_get_title(tag); + if (!title) + continue; + ee = exif_content_get_entry (ed->ifd[i], tag); + if (NULL == ee) + continue; + value = exif_entry_get_value(ee); + fprintf(out," 0x%04x %-30s %s\n", tag, title, value); + } + } + if (ed->data && ed->size) + fprintf(out," thumbnail\n %d bytes data\n", ed->size); +} + +static int dump_file(FILE *out, char *filename) +{ + ExifData *ed; + + ed = exif_data_new_from_file (filename); + if (NULL == ed) { + fprintf(stderr,"%s: no EXIF data\n",filename); + return -1; + } + + fprintf(out,"%s\n",filename); + dump_exif(out,ed); + fprintf(out,"--\n"); + + exif_data_unref (ed); + return 0; +} + +/* ---------------------------------------------------------------------- */ + +#define THUMB_MAX 65536 + +static void +usage(FILE *fp, char *name) +{ + char *h; + + if (NULL != (h = strrchr(name, '/'))) + name = h+1; + fprintf(fp, + "usage: %s [ options ] file\n" + "\n" + "transform options:\n" + " -a automatic (using exif orientation tag)\n" + " -9 rotate by 90 degrees\n" + " -1 rotate by 180 degrees\n" + " -2 rotate by 270 degrees\n" + " -f flip vertical\n" + " -F flip horizontal\n" + " -t transpose\n" + " -T transverse\n" + "\n" + " -nt don't rotate exif thumbnail\n" + " -ni don't rotate jpeg image\n" + " -no don't update the orientation tag\n" + "\n" + "other options:\n" + " -h print this text\n" + " -d dump exif data\n" + " -c <text> create/update comment\n" + " -g (re)generate thumbnail\n" + " -o <file> output file\n" + " -i change files inplace\n" + " -b create a backup file (with -i)\n" + " -p preserve timestamps (with -i)\n" + "\n" + "-- \n" + "Gerd Knorr <kraxel@bytesex.org> [SUSE Labs]\n", + name); +} + +int main(int argc, char *argv[]) +{ + JXFORM_CODE transform = JXFORM_NONE; + unsigned char *comment = NULL; + unsigned char *outfile = NULL; + unsigned char *thumbnail = NULL; + int tsize = 0; + int inplace = 0; + unsigned int flags = + JFLAG_TRANSFORM_IMAGE | + JFLAG_TRANSFORM_THUMBNAIL | + JFLAG_UPDATE_ORIENTATION; + int dump = 0; + int i, c, rc; + + for (;;) { + c = getopt(argc, argv, "hbpid912fFtTagc:o:n:"); + if (c == -1) + break; + switch (c) { + case '9': + transform = JXFORM_ROT_90; + break; + case '1': + transform = JXFORM_ROT_180; + break; + case '2': + transform = JXFORM_ROT_270; + break; + case 'f': + transform = JXFORM_FLIP_V; + break; + case 'F': + transform = JXFORM_FLIP_H; + break; + case 't': + transform = JXFORM_TRANSPOSE; + break; + case 'T': + transform = JXFORM_TRANSVERSE; + break; + case 'a': + transform = -1; /* automagic */ + break; + + case 'n': + /* don't ... */ + switch (optarg[0]) { + case 't': + flags &= ~JFLAG_TRANSFORM_THUMBNAIL; + break; + case 'i': + flags &= ~JFLAG_TRANSFORM_IMAGE; + break; + case 'o': + flags &= ~JFLAG_UPDATE_ORIENTATION; + break; + default: + fprintf(stderr,"unknown option -n%c\n",optarg[0]); + exit(1); + } + break; + + case 'c': + flags |= JFLAG_UPDATE_COMMENT; + comment = optarg; + break; + case 'g': + flags |= JFLAG_UPDATE_THUMBNAIL; + break; + case 'o': + outfile = optarg; + break; + case 'd': + dump = 1; + break; + + case 'b': + flags |= JFLAG_FILE_BACKUP; + break; + case 'p': + flags |= JFLAG_FILE_KEEP_TIME; + break; + case 'i': + inplace = 1; + break; + + case 'h': + usage(stdout,argv[0]); + exit(0); + default: + usage(stderr,argv[0]); + exit(1); + } + } + + /* sanity checks on the arguments */ + if (optind == argc) { + fprintf(stderr, + "no image file specified (try -h for more info)\n"); + exit(1); + } + + /* read-only stuff */ + if (dump) { + rc = 0; + for (i = optind; i < argc; i++) { + if (0 != dump_file(stdout,argv[i])) + rc = 1; + } + return rc; + } + + /* r/w sanity checks */ + if (NULL != outfile && optind+1 > argc) { + fprintf(stderr, + "when specifying a output file you can process\n" + "one file at a time only (try -h for more info).\n"); + exit(1); + } + if (NULL == outfile && 0 == inplace) { + fprintf(stderr, + "you have to either specify a output file (-o <file>)\n" + "or enable inplace editing (-i). Try -h for more info.\n"); + exit(1); + } + if (JXFORM_NONE == transform && + !(flags & JFLAG_UPDATE_COMMENT) && + !(flags & JFLAG_UPDATE_THUMBNAIL)) { + fprintf(stderr, + "What do you want to do today? Neither a new comment nor a\n" + "tranformation operation was specified (try -h for more info).\n"); + exit(1); + } + + /* do actual update work */ + if (outfile) { + if (flags & JFLAG_UPDATE_THUMBNAIL) { + thumbnail = malloc(THUMB_MAX); + tsize = create_thumbnail(argv[optind],thumbnail,THUMB_MAX); + } + return jpeg_transform_files(argv[optind], outfile, transform, + comment, thumbnail, tsize, flags); + } else { + rc = 0; + for (i = optind; i < argc; i++) { + fprintf(stderr,"processing %s\n",argv[i]); + if (flags & JFLAG_UPDATE_THUMBNAIL) { + thumbnail = malloc(THUMB_MAX); + tsize = create_thumbnail(argv[i],thumbnail,THUMB_MAX); + } + if (0 != jpeg_transform_inplace(argv[i], transform, comment, + thumbnail, tsize, flags)) + rc = 1; + } + return rc; + } +} |