Kenneth Aafl?y wrote: > On Sunday 03 April 2005 09:20, you wrote: > >>Kenneth Aafl?y wrote: >> >>>While thinking about this, should it be a callback interface or plain copy >>>interface with buffering? Maybe both? >> >>I believe a simple copy would be sufficient, as i understand.. > > > Only problem is that there are already several copies done in the dvb driver; > from the dma area into the dvb_ringbuffer and from the ringbuf to userspace. > I hate optimizing, it always leaves gaps to fill in :) > > >>>Also I'm pondering of an mmap style implementation that will be in v4. >> >>A mmap style would be nice, but initially shouldn't we keep the goals a >>bit low ? > > > Yes, agree with you on this, but the recording features of a dvb adapter > is somewhat coupled together with frontend tuning, setting ca pids, > finding section tables and so on. > Then why don't we set up on an interface similar to EN50221 in userspace ? I am already doing that as part of the High Level CI interface (liben50221) .. I have yet to fix a few bugs/incompatibilites that i have introduced ... Well, let me get that fixed up so that people can take a look at it.. but you might have to wait a bit on that.. That was why i was holding a bit on that.. Doing that way would be easier, as most people having a copy of the document can straight away punching at code to get going as Ralph pointed out ... And the best part of all is that, we do get a very standard interface in userspace whatever hardware that might be.. What do you think ? Manu
