I'm trying to find a way to get a component to report an enumerated list of frames sizes that it supports. I would have thought this is a pretty common requirement (due to things like camera hardware), so I am surprised that there isn't a param already defined for this. The struct would be similar to OMX_IMAGE_PARAM_PORTFORMATTYPE or OMX_VIDEO_PARAM_PORTFORMATTYPE but would have width & height rather than eCompressionFormat and eColorFormat.

So do I have to use my own extension index for this, or has something been standardised?

Phil Edworthy