[PATCH] mga_vid scaler limits

[Attila Kinali]

On Sat, 16 Dec 2006 17:00:05 +0200

Hello
Disappointed that -vo xmga would refuse 1280x720 even when scaling was unnecessary,
I went abit poking at my matrox and the mga_vid. It appears G550 can scale larger
frames too, provided filtering is disabled (blockiness or jaggedy edges may result,
but it works). As long as the short dimension needs no scaling, it looks great.

I noticed the same thing when hacking the DirectFB matrox driver.
Disabling vertical filtering allows source widths up to 2048. Note that
this only applies to G450/G550. G200 and G400 can't handle it.

Why didn't anyone tell me when i added this check?

Anyways. This mail belongs to -matrox as i don't have
the time to scan -dev-eng regularly for intersting stuff
these days. But -matrox is low traffic enough to watch
closely. Fup2 mplayer-matrox

diff -ur trunk/drivers/mga_vid.c main/drivers/mga_vid.c
--- trunk/drivers/mga_vid.c 2006-06-05 13:29:08.000000000 +0000
+++ main/drivers/mga_vid.c 2006-12-14 07:58:29.000000000 +0000

Wrong tree. Have you read the README.linux.2,6 in there?
It states (more or less) clearly that this tree is outdated.
And i would really like that noone touches it (unless there
is really a need for it)

There are two places to change. The mga_vid driver in
svn.mplayerhq.hu/mga_vid/mga_vid/trunk/ and the check
in libvo/mga_common.c. See my last change there.

But, there need to be a way to tell MPlayer that the
card cannot play >1024 resolution, so that MPlayer can
tell the user. I am not sure whether the current driver
ioctl protocol supports this. But this is a must from my
side for the patch to be appliable

BTW: if you want me to apply it, you have to finish
it until next friday noon (CET) or it'll have to wait
until next year.

Attila Kinali

[Ville Syrjälä]

Post by Attila Kinali
On Sat, 16 Dec 2006 17:00:05 +0200

Hello
Disappointed that -vo xmga would refuse 1280x720 even when scaling was unnecessary,
I went abit poking at my matrox and the mga_vid. It appears G550 can scale larger
frames too, provided filtering is disabled (blockiness or jaggedy edges may result,
but it works). As long as the short dimension needs no scaling, it looks great.

I noticed the same thing when hacking the DirectFB matrox driver.
Disabling vertical filtering allows source widths up to 2048. Note that
this only applies to G450/G550. G200 and G400 can't handle it.

Why didn't anyone tell me when i added this check?

I don't use mga_vid so I don't really follow it's development. This
patch just caught my attention.

Post by Attila Kinali
Anyways. This mail belongs to -matrox as i don't have
the time to scan -dev-eng regularly for intersting stuff
these days. But -matrox is low traffic enough to watch
closely. Fup2 mplayer-matrox

I don't think I'm even subscribed to mplayer-matrox since it's supposed
to be a user list.