On Thu, Jun 03, 2004 at 05:45:47PM +0200, Luca Risolia wrote:
> I am going to submit a patch for the Linux 2.6 adding
> the jpeg frame decoding feature (with integer arithmetics)
> to the w996[87]cf USB drivers.

Why not do it in user space ?

Also are you thinking of JPEG to RGB or JPEG to YUV420 or YUYV or
YV12 etc - each of which is the right answer depending on which
video card or further processing isbeing done.

I've consistently resisted people putting decoder features into
kernel space - you can't do it well in kernel space (mmx), you
can't tile it in kernel space for performance. Take a look at
how alsa has attacked the problem for audio - once you have
libraries that do the conversions you can keep it all out of
unswappable kernel memory.

Alan



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