Re: In-kernel frame conversion

[Jean-Francois Moine <moinejf@xxxxxxx>]

On Thu, 15 May 2008 15:04:45 +0200, "Erik_Andrén" 
<erik.andren@xxxxxxxxx> wrote:
>Hi list,

Hi Erik,

>I'm one of the developers of the m560x project. (
>http://sourceforge.net/projects/m560x-driver/ )
>aiming to provide a driver for the ALi m5602, m5603 chipsets.
	[snip]
>This driver is unfortunately braindead, always sending Bayer-encoded frames
>at a fixed VGA resolution.
>Color recovery, resizing and format conversion is all done in software.
>
>Currently we do the same in order to make the camera useful as many relevant
>linux v4l2 applications fail to have user-space routines converting
>Bayer-frames.
>
>Is it possible to get a driver included upstream and still have such
>kernel-space frame conversion routines or do they have to go in order to get
>the driver in an acceptable shape?

I am working on a driver, gspca v2, which does frame conversion in
user-space. It is based on gspca v1 which handles over 270 USB
webcams. It is composed of:
- a main driver with the USB exchanges and the v4l2 interface,
- kernel modules for the different webcam types (actually 20) and
- a helper process which does frame conversion (JPEG and Bayer to
  YUV420, YUYV and RGB24/32).

I planned to put it under mercurial as soon as most of the webcams
will be tested (and the code will be purified ;)). Feel free to get
a tarball from my site (see below) and to tell me if you may enter
into this scheme.

Cheers.

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/

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