[MPlayer-dev-eng] [PATCH] mga_vid.o: choose device with module parameter --> multihead video
Hans-Andreas Engel
engel at node.ch
Mon Mar 17 09:32:04 CET 2003
Hello.
I would like to suggest adding the following patch to the
cvs [requires the patch posted a few days ago, which adds
the module parameter "major"]:
This patch adds the module parameter "mga_number". On a
system with multiple matrox cards or a matrox card with
multiple chips, this parameters selects which matrox
card/chip is used (in the order of found devices).
Then, one can load the mga_vid module once for each card.
Say, on a system with two cards, the /etc/modules.conf can
look like:
---
alias char-major-178 mga_vid
alias char-major-179 mga_vid
options char-major-179 -o mga_vid-1 major=179 mga_number=1
---
Note that the "-o" option loads a module under a different
name. This allows loading the mga_vid module several times.
With a
mknod /dev/mga_vid0 c 178 0
mknod /dev/mga_vid1 c 179 0
one can then run mplayer on both cards at the same time:
mplayer -slave -vo mga:/dev/mga_vid0 movie1.avi &
mplayer -vo mga:/dev/mga_vid1 movie2.avi
Please comment [arpi, attila, eyck, ...] (and commit?)
this patch.
Hansres
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