Re: [ivtv-devel] shrink live-tv

[Adam F. <agf...@gm...>]

OK, I took a crack at adding an option to change the framebuffer
window size to ivtvctl. Unfortunately, it doesn't work. The ioctl()
command fails. This is basically what it does:

=09if (options[OptSetFBWindow]) {
=09=09printf("ioctl: IVTVFB_IOCTL_SET_WINDOW\n");
=09=09printf("top: %d left: %d width: %d height: %d\n",
=09=09=09new_window.top, new_window.left, new_window.width, new_window.heig=
ht);
=09=09=09if (ioctl(fd, IVTVFB_IOCTL_SET_WINDOW, &new_window) < 0)
=09=09=09=09fprintf(stderr, "ioctl: IVTVFB_IOCTL_SET_WINDOW failed\n");
=09}

The options are getting passed to it corrently. "new_window" is of
type "ivtvfb_ioctl_set_window". That struct and the
IVTVFB_IOCTL_SET_WINDOW are defined in ivtv.h.

A diff is attached.

What am I doing wrong? Can the IVTVFB_IOCTL_* things not be used in
the same way as the IVTV_IOC_* ones?


On 6/28/05, kevin thayer <nuf...@ya...> wrote:
> you'll have to write some code to call the fwAPI
> ioctl.
>=20
> there's no way that i know of to do it from the
> command line.
>=20
> you could probably hack it into ivtvctl if you
> wanted.. shouldn't be too tough.
>=20
> -tmk
>=20
> --- Adam Forsyth <agf...@gm...> wrote:
>=20
> > I've been poking around at this too, and having a
> > bit of trouble.
> > Using ivtvctl -j, I found:
> >
> > 0x6c -- first four bits moves the image left
> > 0x6d -- last five bits moves the image down, first
> > three move it right a bunch
> >
> > but I found no way to resize the image by changing
> > decoder registers.
> > Also, how do you mess with the OSD registers? I
> > don't see an option
> > for ivtvctl to do it, only for the encoder and
> > decoder.
> >
> > On 6/27/05, Patrick de Brabander [mythtv]
> > <my...@pd...> wrote:
> > > i've found the problem.
> > >
> > > The problem was my tv. On the scart input i've
> > changed an setting and it
> > > is now perfect.
> > >
> > > patrick
> > >
> > > > there is a way to tell the decoder to scale the
> > > > output, but as far as i know there isn't an API
> > to it
> > > > yet. you'll have to poke around at it using the
> > fwAPI
> > > > ioctls
> > > >
> > > > see
> > http://ivtv.sourceforge.net/firmware-api.html
> > > >
> > > > i think it's osd call enum 0x56.. give that a
> > try and
> > > > let us know how it goes.
> > > >
> > > > -tmk
> > > >
> > > > --- "Patrick de Brabander [mythtv]"
> > > > <my...@pd...> wrote:
> > > >
> > > >> i have an pvr350 and using the tv-out. When i
> > watch
> > > >> livetv the image is a
> > > >> little bit to large (top to bottom). Is it
> > possible
> > > >> to shrink the image a
> > > >> few pixels.
> > > >> I don't mean the gui, because this can be set
> > in the
> > > >> setup.
> > > >>
> > > >> i know the are some register tweaks to move the
> > > >> image.
> > > >>
> > > >>
> > > >> --
> > > >> gr.
> > > >>
> > > >> patrick
> > > >>
> > > >>
> > > >>
> > > >>
> > > >
> >
> -------------------------------------------------------
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> > > >
> >
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> > > >>
> > > >
> > > >
> > > >
> > > >
> >
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> > > >
> > >
> > >
> > > --
> > > gr.
> > >
> > > patrick
> > >
> > >
> > >
> > >
> >
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>=20
>=20
>=20
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