Initial revision

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;
+    }
+}