[vlc-devel] [PATCH 2/2] linux: Add for kms vout plugin possibility to choose output display
juhapekka.heikkila at gmail.com
Tue Jan 15 13:24:10 CET 2019
On 14.1.2019 21.43, Rémi Denis-Courmont wrote:
> Le maanantaina 14. tammikuuta 2019, 21.09.35 EET Juha-Pekka Heikkilä a écrit :
>> I tried change_integer_cb() but my callback to populate the list was
>> never called.
> With that logic, we'd put the whole CLI help in debug messages just because it
> is "never shown". Come on.
What do you mean "never shown"? I wrote the callback gets never called,
there's no special logic involved in this. Those linked email also
talked there is wish *not* to get it fixed for CLI to which I have no
If I now go with stable VLC do "vlc -H" and look for xcb_xv which I know
uses "change_integer_cb()" for xvideo-adaptor what I get is this:
XVideo output (XCB) (xcb_xv)
--xvideo-adaptor <integer [-2147483648 .. 2147483647]>
XVideo adaptor number
XVideo hardware adaptor to use. By default, VLC will use the
--xvideo-format-id <integer [-2147483648 .. 2147483647]>
XVideo format id
XVideo image format id to use. By default, VLC will try to
best match for the video being played.
Those 2147483647 numbers don't look right. :( I got same behavior with
my attempt on my module and if I try to use those callback parameters
from CLI without giving any number there it freezes VLC on me.
This is where I have that chicken-egg problem. Those callbacks do work
from GUI as expected but when I'm running with features where GUI really
cannot be used because it kills execution of KMS module it's bit of a
bummer. KMS module has the need to become drmmaster and there can be
only one at a time. If something else (gui for example) has set up
graphics on screen that something else is drmmaster when I'm doing query
for that right.
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