Em Wed, 6 May 2020 13:40:52 +0200 Hans Verkuil <hverkuil-cisco@xxxxxxxxx> escreveu: > + > +2) ``V4L2_CAP_IO_MC`` is set (also known as an 'MC-centric' driver) > + > + If the ``mbus_code`` field is zero, then all image formats > + shall be enumerated. > + > + If the ``mbus_code`` field is initialized to a valid (non-zero) > + :ref:`media bus format code <v4l2-mbus-pixelcode>`, then drivers > + shall restrict enumeration to only the image formats that can produce > + (for video output devices) or be produced from (for video capture > + devices) that media bus code. Patch looks ok, but I guess we need to add one more thing to have a fully defined behavior. I mean: What happens otherwise? E. g. if application uses a non-zero value for mbus_code that it is not valid / or it is valid but unsupported? Should it return an empty list or an error code? Thanks, Mauro
