GStreamer - plugin with 2 input pads and 1 output [NOT a mux!]

[Bogdan Pavkovic]

Dear all,

Could you point us to an example or GST documentation on
how to build a simple plugin element
that has 2 input pads configured in push mode
(1st pad receives video frame and 2nd receives rectangle position to draw
over a video frame).
Output should be configured in push mode.
Resulting output is linked to autovideosink and should display the original
frame with a rectangle drawn over it.

N.B. We currently use Cairo library to implement drawing.
N.B. We currently achieve similar result with 2/2 I/O plugin element that
has one of output pads linked with fakesink. Nevertheless, we observe
strange behavior with such setup where frame is corrupt.

Many thanks.

Best regards,
Bogdan
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