Date: Fri, 18 Apr 1997 14:11:44 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: hasty@rah.star-gate.com (Amancio Hasty) Cc: msmith@atrad.adelaide.edu.au, terry@lambert.org, freebsd-hackers@freebsd.org Subject: Re: video capture driver interface to file system? Message-ID: <199704180441.OAA23105@genesis.atrad.adelaide.edu.au> In-Reply-To: <199704180331.UAA01522@rah.star-gate.com> from Amancio Hasty at "Apr 17, 97 08:31:24 pm"
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Amancio Hasty stands accused of saying: > > I am just looking for a technical solution yes I can go and look around > the kernel sources. I just thought that maybe and just maybe one of > you guys knew how to do it . Guess not. Uh, well I do, because I've done it, but it's much easier just to say "go do it like ktrace does", because that's how I did it. In the end I decided that I had to massage the data too much though, so I gave in and went for a userland solution. I don't know how much data you're actually moving, but I appreciate that what you basically want is just to dump already-synced frame data to disk. You haven't said, yet, whether you want it in files, or are willing to deal with digging it out of raw disk partitions at some later date. The latter I haven't done, but I have played with raw disk access in the kernel previously; there are various pros and cons to do with that approach that I assumed you would already know about. > Amancio -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
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