V4L2 backport do-able?

[Ron Klinkien]

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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[Steven James Drinnan-2]

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.
>
> ------------------------------------------------------------------------------
> _______________________________________________
> Gambas-user mailing list
> Gambas-user@...
> https://lists.sourceforge.net/lists/listinfo/gambas-user
>

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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[Ron Klinkien]

Steven James Drinnan wrote:

> 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.
>>
>>
>>    
>
> 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
>
> End
> This will relaunch your program preloading v4lcompat
>
>
> Benniot said it is fixed in version 3
>
>
>  

Didn't know this approach thanks, will fiddle with this.

Regards,
Ron_2nd.


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