Hi Steve,
no luck:
Starting NVrec.c, version 20011230 (NVrec-20011230).
v4lgen core init - Device /dev/v4l/video0
v4l2 core init - Size: 384x288 from /dev/v4l/video0
v4l2 core init - trying format YUV420
v4l2 core init - got 32 buffers
v4l2 core init - querybuf failed: Invalid argument
Am Sam, 2001-12-29 um 14.38 schrieb Stephen Davies:
>
>
> On 29 Dec 2001, Dirk Meul wrote:
>
> > Hi Steve,
> >
> > with changes you mentioned nothing changed for me :-(
> >
> > Starting NVrec.c, version 20011228 (NVrec-20011228).
> > v4lgen core init - Device /dev/v4l/video0
> > v4l2 core init - Size: 384x288 from /dev/v4l/video0
> > v4l2 core init - trying format YUV420
> > v4l2 core init - could not request parameters: Invalid argument
> >
> > [v4l2_core.c]
> > ...
> > vct->fd = open(fdev, O_RDWR);
> > ...
> > vct->bufs[i * vct->planes] = (unsigned char *)mmap(NULL,
> > vct->cbuf.length, PROT_READ|PROT_WRITE, MAP_SHARED, vct->fd,
> > vct->cbuf.offset);
> > ...
> >
> > Something missed?
>
> Hi Dirk,
>
> Sorry - I forgot that I also made some changes in Gerd's bttv 0.8 - to add
> an implementation of VIDIOC_G_PARM.
>
> I though I'd submitted that to Gerd but don't see this in the current
> 0.8.31 source, although other adjustments are there.
>
> Here's a patch to add the VIDIOC_G_PARM for 0.8.31 - needed for NVrec to
> work.
>
> I ported this change forward from the 0.8.28 I use - compiled but not
> tested. I also had some changes to mmap flags - but 0.8.31 code has
> changed in that area so I can't immediately see if the 0.8.31 has the
> changes. Let me know how you get on.
>
> In the meantime I will clean up and make a proper patch submission to
> Gerd.
>
> Regards,
> Steve
> ----
>
> diff -U3 -r bttv-0.8.31/bttv-driver.c bttv-0.8.31-sld/bttv-driver.c
> --- bttv-0.8.31/bttv-driver.c Fri Nov 16 15:13:59 2001
> +++ bttv-0.8.31-sld/bttv-driver.c Sat Dec 29 13:24:49 2001
> @@ -2420,6 +2420,27 @@
> case VIDIOC_S_CTRL:
> return set_control(btv,arg);
>
> + case VIDIOC_G_PARM:
> + case VIDIOC_S_PARM:
> + {
> + struct v4l2_standard std;
> + struct v4l2_streamparm *p = arg;
> +
> + down(&fh->lock);
> +#ifdef FIXME
> + /* FIXME: BTTV2 code: Where's equivalent info in bttv structures...? */
> + p->type = (btvo->vbi)?V4L2_BUF_TYPE_VBI:V4L2_BUF_TYPE_CAPTURE;
> +#else
> + p->type = V4L2_BUF_TYPE_CAPTURE;
> +#endif
> + p->parm.capture.capability = 0;
> + p->parm.capture.capturemode = 0;
> + v4l2_video_std_construct(&std,bttv_tvnorms[btv->tvnorm].v4l2_id,0);
> + p->parm.capture.timeperframe = v4l2_video_std_tpf(&std);
> + up(&fh->lock);
> + return 0;
> + }
> +
> case VIDIOC_ENUMSTD:
> case VIDIOC_G_STD:
> case VIDIOC_S_STD:
--
Dirk Meul <dirk.meul@xxxxxxxx>
