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Date:      Tue, 18 Jan 2000 08:14:16 +0100
From:      Jaeckel Joachim <Joachim.Jaeckel@mgi.de>
To:        "'freebsd-multimedia@freebsd.org'" <freebsd-multimedia@freebsd.org>
Subject:   something like video4linux the 2. (some thoughts...)
Message-ID:  <25BD834C7D47D311B46F002048401A634D94F4@MGHM0219>

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Hello.

It=B4s me again... ;-)

Last week I wrote, that I would like to create a pseudo-device "video" =
which
handles the functionality which is provided by the videodev.* sources =
to
linux. But after a while, I couldn=B4t realize the advantages from such =
a
device. Because the device-driver behavior is a little bit different =
than
that on linux, I don=B4t think, that we need such a pseudo device, if =
we code
the hardware-driver itself in a video4linux compatible way. And the =
user
sets the link from /dev/video to /dev/whatevervideodevice itself (or =
through
the MAKEDEV script).

The other thing is, if the system would use such a pseudo-device, =
everything
that is read/written to/from the hardware-device passes the kernel for =
2
times.

Maybe I=B4m totally wrong, or you can correct me in any way...

What would you think about it?

Thanks in advance.
Joachim Jaeckel.


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