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Re: V4L2 backport do-able?

by Steven James Drinnan-2 :: Rate this Message:

On Tue, 2009-06-30 at 20:19 +0200, Ron wrote:

> Is it do-able to backport V4L2 to Gambas stable?
>
> I find a lot of video cams/devices using this version, and they do not
> seem to work with the current component.
>
> It gets a bit useless as time goes by....
>
> Anyone has taken a shot at this yet?
>
> Kind regards,
> Ron_2nd.
>
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Basicly its a problem that gambas2 is v4l1 and now most distros use v4l2

So you need to have v4lcompat and preload it like this

for 64bit

LD_PRELOAD=/usr/lib64/libv4l/v4l1compat.so (application name)

for _86

LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so (application name)

In code you can try something like this

Public Sub Main()
DIM myname AS String
DIM myarch AS String

SHELL "uname -p" TO myarch
'frmMain.Show

IF Application.Args.Count <> 2 THEN
IF InStr(myarch, "64") <> 0 THEN
myname = "LD_PRELOAD=/usr/lib64/libv4l/v4l1compat.so " &
Application.Name & " v4l"
PRINT "Launch program with 64 bit v4l1compat.so"
ELSE
myname = "LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so " &
Application.Name & " v4l"
PRINT "Launch program with 32 bit v4l1compat.so"
END IF

PRINT myname
SHELL myname WAIT
QUIT

ELSE
IF Application.Args[1] <> "v4l" THEN QUIT
'else continue
frmMain.Show 'this is the form to start.
END IF
End
This will relaunch your program preloading v4lcompat

Benniot said it is fixed in version 3

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