Re: v4l2src zerocopy patch

[Filippo Argiolas <fargiolas gnome org>]

On Thu, May 28, 2009 at 11:59 AM, Stefan Kost <ensonic hora-obscura de> wrote:
> hi,
>
> I am working on a patch to enable zerocopy in v4l2src. That is it would
> enqueue picture from e.g. xvimagesink and capture into those. This works
> already on my embedded device and lowers the CPU for xv4lsrc !
> xvimagesink from 15% to 6-7% :-)
>
> The patch is attached to
> http://bugzilla.gnome.org/show_bug.cgi?id=583890 (against
> gst-plugins-good git).
> The patch seems to not break anything so far, but unfortunately not many
> drivers support the new behaviour (it will detect it and fallback to
> mmap'ed buffers that it uses now). The gspca driver seems to have
> support for it. If someone has a camera that uses that driver, it would
> rock if you could test the patch.

Left my comments in the bug,

Filippo