Add support for writing external EXIF metadata back to images

Turned off by default, this will copy all data from supplied external
EXIF metadata file back to all generated image files. All user overrides
are still applied on top of it.

Another reason for turning this off is file size concern, target image
files would carry a lot more information that may not be always needed and
would increase total amount of data transferred.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/jpeg-utils.h b/src/jpeg-utils.h
index cc6c5c7..d393fbe 100644
--- a/src/jpeg-utils.h
+++ b/src/jpeg-utils.h
@@ -53,6 +53,7 @@ typedef struct {
   gchar *override_copyright;
   int timezone_shift;
   time_t fake_datetime;
+  gchar *external_exif_data;
 } ExifData;