Don't crash just because some dvd title uses an illegal pgn number.

(Fixes bug reported in http://forum.handbrake.fr/viewtopic.php?p=28767&sid=23308d0c02b70fceb54db71b0d0f2660#p28767).

git-svn-id: svn://localhost/HandBrake/trunk@1324 b64f7644-9d1e-0410-96f1-a4d463321fa5

diff --git a/libhb/dvd.c b/libhb/dvd.c
index 05e9bde..1c4eb60 100644 (file)
--- a/libhb/dvd.c
+++ b/libhb/dvd.c
@@ -178,6 +178,12 @@ hb_title_t * hb_dvd_title_scan( hb_dvd_t * d, int t )
         goto fail;
     }
 
+    if( pgn <= 0 || pgn > 99 )
+    {
+        hb_error( "scan: pgn %d not valid, skipping", pgn );
+        goto fail;
+    }
+
     /* Start cell */
     title->cell_start  = d->pgc->program_map[pgn-1] - 1;
     title->block_start = d->pgc->cell_playback[title->cell_start].first_sector;