Re: [GnomeMeeting-list] experience with the V4L1 compatibility of V4L2

[Guilhem Tardy <guilhem_tardy yahoo com>]

I found that the problem is actually not the palette, but a subversive change
of frame size (640x288) when you Open() a VideoInputDevice.
Then, the SetFrameColourConverter() calls SetFrameColour(), which calls
SetFrameSizeConverter(), and returns FALSE (640x288 is definitely
non-standard).
Do you know why VideoInputDevice::Open() resets the frame size?

Guilhem.

--- Damien Sandras <dsandras seconix com> wrote:
> Hi,
> 
> 
> Bad news, I only had problem reports for the winnov videum. But nobody was
> able to debug it.
> 
> Try to know which palette is supported by the driver, and we can "force"
> this palette for your card in pwlib.
> 
> When a palette is selected, and that it fails, it tries the following
> palette.
> But what I don't understand, is that apparently it is only receiving
> partial palette names instead of full ones.
> 
> On Wed, Apr 17, 2002 at 01:28:26PM -0700, Guilhem Tardy wrote:
> > Hi,
> > 
> > I have installed a Videum PCI card (HW 6.4 rev. A) in my box, and managed
> to
> > get it work with a proper V4L2 application xcaptest.
> > I am now trying the compat through the V4L1 support of PWLib/OpenH323 and
> > GnomeMeeting. So far, unsuccessfully.
> > 
> > GnomeMeeting tries to setup a YUV420P colour format, but without reason the
> > driver (wnvvid) diplays in 'dmesg' the following:
> > wnvvid: Unknown format "P422" 32323450
> > wnvvid: Unknown format "P411" 31313450
> > wnvvid: Unknown format "P411" 31313450
> > wnvvid: Unknown format "YUV9" 39565559
> > 
> > I have no idea why it even tries those formats, but suspect it is in the
> > compatibility code (v4l_compat.c), hence my question if anyone has ever
> > succeeded with this?
> > 
> > Guilhem.
> > 
> > 
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