Hi, Hans Verkuil [hverkuil@xxxxxxxxx] wrote: > > > > In two nodes case, application cannot know the feature via > > VIDIOC_QUERYCAP. > > Because decoder and encoder return the same CAPABILITY. OUTPUT and > CAPTURE > > So application should call VIDIOC_G_FMT to recognize the feature. > > The current V4L API is not good enough to determine what each video > node > can do. The upcoming media controller API should help in that. For the > time being you should just assume that applications know what they are > doing. > > Anyway, I think having two device nodes is a perfectly valid solution. > Particularly for more complex scenarios. I agree that having two video nodes is a good solution. This kind of separation would simplify the driver. Detecting what should be done by checking format is possible, but I think having separate nodes seems better. Best regards, -- Kamil Debski Linux Platform Group Samsung Poland R&D Center -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
