[Bug 775288] opencv: base opencv video filter class does not fully implement the video filter contract

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=775288

--- Comment #9 from Philippe Renon <philippe_renon at yahoo.fr> ---
> > 
> > +  ret = fclass->cv_trans_ip_func (transform, frame->buffer,
> > transform->cvImage);
> > ^ my patch will take care of renaming the vfuncs to proper names (i.e.
> > cv_transform_frame_ip) and passing GstVideoFrame in place of GstBuffer,
> > which will impact all elements deriving from gstopencvvideofilter.
> 
> This is quite intrusive. What do we gain from that ? I guess I need to go
> over the elements to see. I would be tempted to just remove the GstBuffer if
> possible, and only have IplImage in there.

Some elements get a TIMESTAMP from the buffer. Same and more can be gotten from
a video frame.

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