Picture handling: change data structure to store offset instead timestamp

It makes no sense to store a 64bit time stamp with every picture. Even the
32bit offset (in seconds) from the dive start is WAY overkill. But
switching to that makes the code much more simple in a number of spots.
And makes what is saved to the XML file easier to read, too.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/dive.h b/dive.h
index 279a2944c..23278d4a3 100644
--- a/dive.h
+++ b/dive.h
@@ -289,7 +289,7 @@ struct dive {
 /* picture list and methods related to dive picture handling */
 struct picture {
 	char *filename;
-	time_t timestamp;
+	int32_t offset;
 	degrees_t latitude;
 	degrees_t longitude;
 	struct picture *next;
@@ -305,7 +305,7 @@ extern void dive_create_picture(struct dive *d, char *filename, int shift_time);
 extern void dive_add_picture(struct dive *d, struct picture *newpic);
 extern void dive_remove_picture(struct dive *d, struct picture *pic);
 extern unsigned int dive_get_picture_count(struct dive *d);
-extern void picture_load_exif_data(struct picture *p);
+extern void picture_load_exif_data(struct picture *p, timestamp_t *timestamp);
 extern void dive_set_geodata_from_picture(struct dive *d, struct picture *pic);