Date: Wed, 8 Oct 1997 18:16:56 -0200 (EDT) From: Joao Carlos Mendes Luis <jonny@coppe.ufrj.br> To: rhh@ct.picker.com (Randall Hopper) Cc: jonny@coppe.ufrj.br, hasty@rah.star-gate.com, multimedia@FreeBSD.ORG Subject: Re: [video] tuner input format issues Message-ID: <199710082016.SAA22480@gaia.coppe.ufrj.br> In-Reply-To: <19971007205057.36136@ct.picker.com> from Randall Hopper at "Oct 7, 97 08:50:57 pm"
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#define quoting(Randall Hopper) // Jonny, your patches applied without a hitch. Thanks. Indeed, after sending them I found some other missing modifications. They are mostly related to X widgets interface, so I think you should already have seen them. // As I was merging them in though, several issues related to format selection // occurred to me. // // First, I'm assuming that selecting anything but NTSC/M, NTSC/J, or PAL/M on // a non-NTSC tuner isn't really a valid thing to do. Similarly for selecting // the three above types on, say, a Temic or Philips PAL tuner. And is // anything but SECAM valid on a Philips SECAM tuner? You are right, but I think you could still insert video through the RCA conector. Probably a very rare condition, but possible. My original project was to select just between PAL/M and NTSC, but the chip interface was so easy... :) // Seems what we need is a driver ioctl to return the supported input formats // for the installed tuner. Apps like Fxtv could use this to suppress GUI and // resource file selection of these invalid input formats. Some other // tuner-specific info would be useful in the return struct for this new // "tuner capabilities" ioctl as well: max capture geometry (640x480 or // 768x576) and max FPS (30 or 25). The latter two would let fxtv get rid of // these hard-coded FIXME values that are input-format specific. // // I'd add this ioctl myself if I knew all the input-format capabilities of // each tuner. If you know (Jonny, or anyone), fill me in and I'll cook the // driver patch. I also don't know (yet). But with my comments above, maybe this is not desirable, is it ? // Second, I disabled the selectability of the "AUTO" input format. I think I was thinking about that too. Mostly because auto does not work for me, since it thinks my TV is NTSC and not PAL/M. :) Jonny -- Joao Carlos Mendes Luis jonny@gta.ufrj.br +55 21 290-4698 jonny@coppe.ufrj.br Universidade Federal do Rio de Janeiro UFRJ/COPPE/CISI PGP fingerprint: 29 C0 50 B9 B6 3E 58 F2 83 5F E3 26 BF 0F EA 67
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