Modifies a pointer to a Gst.BufferList to point to a different
Gst.BufferList. The modification is done atomically (so this is useful for
ensuring thread safety in some cases), and the reference counts are updated
appropriately (the old buffer list is unreffed, the new is reffed).
Either new_list or the Gst.BufferList pointed to by old_list may be null.
Modifies a pointer to a Gst.BufferList to point to a different Gst.BufferList. The modification is done atomically (so this is useful for ensuring thread safety in some cases), and the reference counts are updated appropriately (the old buffer list is unreffed, the new is reffed).
Either
new_listor the Gst.BufferList pointed to byold_listmay benull.