Add support for specifying custom date

This essentially means faking the datetime, e.g. when you want to mask
original picture date.

This commit also changes little bit of datetime conversion, hopefully
fixing DST issues. Needs more testing.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/jpeg-utils.h b/src/jpeg-utils.h
index 89a2cd4..cc6c5c7 100644
--- a/src/jpeg-utils.h
+++ b/src/jpeg-utils.h
@@ -52,6 +52,7 @@ typedef struct {
 
   gchar *override_copyright;
   int timezone_shift;
+  time_t fake_datetime;
 } ExifData;