frei0r-filter-perspective parameters?

[Jos van Riswick]

Hi

How do I specify the parameters of the frei0r perspective filter? I looked
at the source of this filter, and the parameters seem to be 'top
left', 'top right',
'bottom left' and 'bottom right'. Probably the 4 corner points (x,y) of an area
that will be a rectangle after the transformation (I hope).

How do i find out the way to feed parameters (coordinate pairs in this case)
to the frei0r gstreamer plugin?


josvanr