Gerd Knorr (kraxel@xxxxxxxxxxx): > > > Sorry, no. bttv 0.8.x will happily put the fields into separate > > > capture buffers. But the IRQ is raised once per frame, thus the > > > application(s) will be waked up when both fields are finished. > > > > What's the problem? > > The driver decides once per frame what to do next depending on the > state of overlay and the request(s) in the capture queue. At this > point it also wakes up the processes waiting on the completed buffers. Ugh.. > > Would this be easy to put in the driver, or is there something I've > > missed? > > It is probably possible, but not trivial. Sometimes you need both > fields, sometimes one is enougth. Thats why the code is less complex > if that is done per frame, not per field. Sure, but I thought alot of the point of V4L2 is that we can finally get that interrupt per field ... Isn't it simply a matter of, on each field, checking if there are any completed buffers? I'm very much relieved to hear that it is possible.. :) -- Billy Biggs vektor@xxxxxxxxxxxx
