Improve speed when encoding lots of identical frames when the same subtitles.

diff --git a/src/lib/position_image.cc b/src/lib/position_image.cc
index 44c1262b3a90d11aba8e6ec94438e39cff950102..47e8f1a987e7d08fca0cd62e1542231841ed2019 100644 (file)
--- a/src/lib/position_image.cc
+++ b/src/lib/position_image.cc
@@ -25,11 +25,12 @@ using std::cout;
 bool
 PositionImage::same (PositionImage const & other) const
 {
-       if (image != other.image || position != other.position) {
+       if ((!image && other.image) || (image && !other.image) || position != other.position) {
                return false;
        }
 
        if (!image) {
+               /* Neither has image and the positions are the same */
                return true;
        }