linux-fbdev-users

[Linux-fbdev-users] Redirect the framebuffer /dev/fb0 to a DVB-Card

[jabiruh <ja...@gm...>]

Hello,
My linvdr (Mini-Distri for VDR) system has got two DVB-Cards and only a TV 
attatched to it (no other Monitor).
Now I would like to install the webbrowser links2 which uses the framebuffer 
to run graphic mode.
Is there any possibility to redirect the output of the browser to TV over the 
DVB-Card? Do I have to convert the framebuffer to mpeg first, so that MPlayer 
can show it like other videos on TV?
I already tried several mailing lists (MPlayer, ImageMagic and mjpeg) to find 
a solution, but nobody knows how to do this).
Reiner

Re: [Linux-fbdev-users] Redirect the framebuffer /dev/fb0 to a DVB-Card

[Geert U. <ge...@li...>]

On Sun, 10 Jul 2005, jabiruh wrote:
> My linvdr (Mini-Distri for VDR) system has got two DVB-Cards and only a TV 
> attatched to it (no other Monitor).
> Now I would like to install the webbrowser links2 which uses the framebuffer 
> to run graphic mode.
> Is there any possibility to redirect the output of the browser to TV over the 
> DVB-Card? Do I have to convert the framebuffer to mpeg first, so that MPlayer 
> can show it like other videos on TV?
> I already tried several mailing lists (MPlayer, ImageMagic and mjpeg) to find 
> a solution, but nobody knows how to do this).

If your DVB card has a fullscreen OSD mode (some only support a limited number
of very small OSD windows), you can write a frame buffer device for the OSD
plane. Then you can have a text console, X, links2, ... in the OSD plane, and
video in the video plane underneath (controllable through an alpha/transparency
parameter).

This is a common approach in Set Top Boxes.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@li...

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

Re: [Linux-fbdev-users] Redirect the framebuffer /dev/fb0 to a DVB-Card

[James L. <ja...@ak...>]

I'm not familiar with the exact hardware you have, but usually, a composite
video or s-video output from a conventional video card just works. All of
the magic of converting the computer monitor display to a TV compatible
signal is done on the video card. Have you tried any other application that
is designed to use the frame buffer? Perhaps it is only a matter of choosing
the right one. If there is more than one video output on a system, there
will be /dev/fb0, /dev/fb1, /dev/fb2, etc... The fb's that actually have
drivers to hardware behind them will be valid and may be opened for read and
write.

Take a look at this:
http://www.akrobiz.com/ezfb/

It might compile and run on your system. If so, it will most likely tell you
something about your video situation.
Let me know what happens.

Good Luck!       James.   :o)


----- Original Message ----- 
From: "jabiruh" <ja...@gm...>
To: <lin...@li...>
Sent: Sunday, July 10, 2005 3:29 PM
Subject: [Linux-fbdev-users] Redirect the framebuffer /dev/fb0 to a DVB-Card


> Hello,
> My linvdr (Mini-Distri for VDR) system has got two DVB-Cards and only a TV
> attatched to it (no other Monitor).
> Now I would like to install the webbrowser links2 which uses the
framebuffer
> to run graphic mode.
> Is there any possibility to redirect the output of the browser to TV over
the
> DVB-Card? Do I have to convert the framebuffer to mpeg first, so that
MPlayer
> can show it like other videos on TV?
> I already tried several mailing lists (MPlayer, ImageMagic and mjpeg) to
find
> a solution, but nobody knows how to do this).
> Reiner
>
>
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