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

[Damien Sandras <dsandras seconix com>]

On Wed, Apr 17, 2002 at 03:45:25PM -0700, Guilhem Tardy wrote:
> 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?
> 

I'm not sure I understand what you mean.
PWLib only tries sizes CIF (352x288) and QCIF (176x144).

> 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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> 
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