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OMX buffer forwarding

william calvert
Prodigy 220 points

Hi,

Is there any way for an OMX component to forward video frame buffers from an input port to output port without a full frame copy?

for example, to modify a small region of the frame buffer to add OSD. The examples that I have found (omx_vlpb, omx_sw_osd) do a full frame copy which seems like a big overhead in this case.

Possibly OMX_BASE_UseBuffer() could be used for this purpose but I don't understand how...

The component needs to work in a gstreamer pipeline.

I am using EZSDK 5.05.01.04 on DM8148.

Any help would be appreciated!

Thanks,

William.