add dvd main feature title detection

scans the dvd menus and presses buttons to see where they might lead.
when a button press leads to a title, i check to see if it is the
longest seen thus far and save it's index.  

this only applies when dvdnav is enabled.  when dvdread is in use,
the longest title of all the titles is flagged as the "main feature"


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@3245 b64f7644-9d1e-0410-96f1-a4d463321fa5

1 files changed, 6 insertions, 3 deletions

diff --git a/gtk/src/hb-backend.c b/gtk/src/hb-backend.c
index abe02b8e7..55f9747c9 100644
--- a/gtk/src/hb-backend.c
+++ b/gtk/src/hb-backend.c
@@ -2019,19 +2019,22 @@ ghb_longest_title()
 	gint count = 0;
 	guint64 longest = 0;
 	gint titleindex = 0;
+	gint feature;
 	
 	g_debug("ghb_longest_title ()\n");
 	if (h_scan == NULL) return 0;
 	list = hb_get_titles( h_scan );
 	count = hb_list_count( list );
 	if (count > 100) count = 100;
+	if (count < 1) return 0;
+	title = (hb_title_t*)hb_list_item(list, 0);
+	feature = title->job->feature;
 	for (ii = 0; ii < count; ii++)
 	{
 		title = (hb_title_t*)hb_list_item(list, ii);
-		if (title->duration > longest)
+		if (title->index == feature)
 		{
-			titleindex = ii;
-			longest = title->duration;
+			return ii;
 		}
 	}
 	return titleindex;