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. I belive that the in kernel drivers could be simplified a lot, and even keeping compatability between v3/4 apis if some workloads is moved to userspace. But that may be too complicated. Kenneth
