Re: pxa_camera with one buffer don't work

[Stefan Herbrechtsmeier <hbmeier@xxxxxxxxxxxxxxxxxxxx>]

Stefan Herbrechtsmeier schrieb:
> Guennadi Liakhovetski schrieb:
> > On Fri, 2 May 2008, Stefan Herbrechtsmeier wrote:
> >
> >  
> > > Guennadi Liakhovetski schrieb:
> > >    
> > > > On Fri, 25 Apr 2008, Stefan Herbrechtsmeier wrote:
> > > >
> > > >        
> > > > > Hi,
> > > > >
> > > > > is it normal, that the pxa_camera driver don`t work with one 
> > > > > buffer?. The
> > > > > DQBUF blocks if only one buffer is in the query.
> > > > >             
> > > > Well, in v4l2-apps/test/capture_example.c we see:
> > > >
> > > >     if (req.count < 2) {
> > > >         fprintf (stderr, "Insufficient buffer memory on %s\n",
> > > >              dev_name);
> > > >         exit (EXIT_FAILURE);
> > > >     }
> > > >
> > > > so, they seem to refuse to run with fewer than 2 buffers. But if I 
> > > > remove
> > > > this restriction and enforce 1 buffer, it works. 2.5 times slower, but
> > > > works.       
> > > If I do the same thing, I get a select timeout.
> > >     
> >
> > With the same capture_example.c?
> >   
> I used a modified capture_example.c (with the modification you point 
> me some emails ago). If I change the
> req.count to 1 and remove the restriction I get the select timeout.
I forget to say, that I use V4L2_PIX_FMT_YUYV

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