+ int left_crop () const {
+ boost::mutex::scoped_lock lm (_mutex);
+ return _crop.left;
+ }
+
+ int right_crop () const {
+ boost::mutex::scoped_lock lm (_mutex);
+ return _crop.right;
+ }
+
+ int top_crop () const {
+ boost::mutex::scoped_lock lm (_mutex);
+ return _crop.top;
+ }
+
+ int bottom_crop () const {
+ boost::mutex::scoped_lock lm (_mutex);
+ return _crop.bottom;
+ }
+