From: volodya@mindspring.com
To: Stelian Pop <stelian@alcove.fr>
Cc: torvalds@transmeta.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.4.5-ac12] New Sony Vaio Motion Eye camera driver
Date: Thu, 28 Jun 2001 15:11:22 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.20.0106281504570.1132-100000@node2.localnet.net> (raw)
In-Reply-To: <E15A7os-0003e9-00@come.alcove-fr>
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Sorry for replying a couple of weeks late - I don't check linux-kernel
that often.
On Wed, 13 Jun 2001, Stelian Pop wrote:
> > I got just the YUV code from Gatos, and a few months ago it took less than
> > an hour to merge just that part (and most of that was compiling and
> > testing).
>
> Me too. After some days playing with it it seems that the Rage Mobility
> Card (from the Vaio Picturebook C1VE <- that's where we started the
> discussion):
> - has almost no acceleration in XFree, including the 4.1.0 release
> - has Xv YUV->RGB acceleration in Gatos (but that's all, no direct
> video input etc).
it has, but it is disabled as normally notebooks don't have video in.
Well, some do but this is a grey area. ATI says there supposed to be a
multimedia table that says if you have a decoder on board - but some
manufacturers don't include it. In this case the driver cannot know
whether the decoder is present and disables the interface to avoid
lockups.
I imagine it is either using ZV port or VIP/MPP connector - I'll be happy
to help you to get it to work, provided you know the part that produces
video stream.
>
> > The rest of Gatos is obviously more experimental, but the YUV code looks
> > quite sane.
>
> Well, not quite... I've had several X lockups while using the YUV
> acceleration code. Let's say one lockup per half an hour.
That's not supposed to happen - let me know what causes it.. what you are
using, etc..
>
> Even the performances are controversial: with 320x240, I achieve
> great performance with xawtv/meye driver, I can even use the hardware
> scaling facilities (well, the xawtv sources need a little hacking for
> that), but in 640x480 the framerate achieved with Xv is below the
> one I get by converting YUV->RGB in software...
You have to be careful here - you can't write to the framebuffer without
waiting for engine to go idle. Otherwise it'll lockup.
>
> But the main question remains: does the MotionEye camera support
> overlay or not ? It could be that it is connected to the feature
> connector of the ATI board for doing direct video input/output
> (but no X driver recognizes this connector today). The motion jpeg
> chip this camera is based on definately has a video output.
I can help you get this to work.
>
> Or it could just be the application who gets YUV data from the chip
> then send it directly to the video board. Today this works, almost
> (because we need a patched X - read gatos - and a patched xawtv - in
> order to do scaling).
Try using xv_stream from ati_xv branch on gatos.
Vladimir Dergachev
>
> Stelian.
> --
> Stelian Pop <stelian.pop@fr.alcove.com>
> |---------------- Free Software Engineer -----------------|
> | Alcôve - http://www.alcove.com - Tel: +33 1 49 22 68 00 |
> |------------- Alcôve, liberating software ---------------|
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
next prev parent reply other threads:[~2001-06-28 19:10 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-12 20:58 [PATCH 2.4.5-ac12] New Sony Vaio Motion Eye camera driver Alex Deucher
2001-06-12 22:50 ` egger
2001-06-13 13:05 ` Alex Deucher
2001-06-12 22:51 ` Linus Torvalds
2001-06-13 6:33 ` egger
2001-06-13 10:24 ` Stelian Pop
2001-06-14 21:36 ` Linus Torvalds
2001-06-15 21:10 ` Stelian Pop
2001-06-28 19:11 ` volodya [this message]
2001-06-29 9:29 ` Stelian Pop
2001-06-13 13:09 ` Alex Deucher
-- strict thread matches above, loose matches on Subject: below --
2001-06-10 13:25 Stelian Pop
2001-06-10 14:39 ` Alan Cox
2001-06-10 15:57 ` Stelian Pop
2001-06-10 15:58 ` Alan Cox
2001-06-10 16:46 ` Stelian Pop
2001-06-10 19:07 ` Linus Torvalds
2001-06-10 23:41 ` egger
2001-06-11 0:13 ` Linus Torvalds
2001-06-11 19:37 ` egger
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