[PD] How to use /dev/video2 virtual video device in GEM

Bart Koppe bk at a-bort.org
Tue Dec 29 13:26:05 CET 2009


Merci!
It works :)

Bart


On 12/29/2009 11:25 AM, cyrille henry wrote:
> hello,
>
> /dev/video2 look to be a V4L device, and not V4L2.
> so you have to configure pix_video to use V4L driver.
> a message [driver v4l< should do it (or driver 1, or whatever number
> pix_video use for V4L)
> then [open /dev/video2<
>
> cyrille
>
>
> Bart Koppe a écrit :
>> Thanks, I now tried, funny to mention that pdp_v4l can read
>> /dev/video2 (virtual video device) and pdp_v4l2 cannot!
>> But I was not clear in my message i think, I just wanted to do the
>> same in GEM.
>> Now I yesterday finally found out how to correctly use pdp2gem, i can
>> just use pdpv4l and use the output wherever i can.
>> Baically i'm a newb in doing a bit of video/images mixing in PD.. ;)
>> Cheers,
>> Bart
>>
>>
>>
>>
>> On 12/28/2009 06:56 PM, Pagano, Patrick wrote:
>>> did you try pdpv4l2?
>>>
>>>
>>> ________________________________________
>>> From: pd-list-bounces at iem.at [pd-list-bounces at iem.at] On Behalf Of
>>> Bart Koppe [bk at a-bort.org]
>>> Sent: Sunday, December 27, 2009 6:05 PM
>>> To: PD list
>>> Subject: [PD] How to use /dev/video2 virtual video device in GEM
>>>
>>> Hi,
>>>
>>> I use /dev/video2 to get a mjpeg live stream into PD.
>>> With pix_video I can open my webcam, but when I open the virtual video
>>> device (/dev/video2) i get an error, i guess todo with the fact that
>>> it's not a real webcam:
>>>
>>> error: Cannot open '/dev/video2': 25, Inappropriate ioctl for device
>>> GL: invalid enumerant--
>>>
>>> Is there other ways to get it fixed in GEM?
>>>
>>> With pdp_v4l i can open the virtual device, but I want to try it in
>>> GEM,
>>> mostly because GEM is better documented, I need to add several jpeg/png
>>> pictures on both sides of that stream.
>>>
>>>
>>> Thanks..
>>>
>>> Bart
>>>
>>>
>>> #N canvas 527 149 328 354 12;
>>> #X obj 55 78 gemhead;
>>> #X obj 55 222 rectangle 4 3;
>>> #X obj 55 188 pix_texture;
>>> #X obj 55 152 pix_video;
>>> #N canvas 340 107 682 322 gemwin 0;
>>> #X obj 102 122 tgl 15 0 \$0-gemstart \$0-gemstart empty 17 7 0 10
>>> -262144
>>> -1 -1 0 1;
>>> #X obj 102 161 r \$0-gemstart;
>>> #X obj 102 182 select 1 0;
>>> #X msg 102 214 create \, 1;
>>> #X msg 177 215 destroy;
>>> #X obj 102 239 t a;
>>> #X obj 318 54 inlet;
>>> #X obj 318 255 gemwin;
>>> #X obj 318 100 t a a;
>>> #X obj 318 287 outlet;
>>> #X obj 350 128 route create destroy;
>>> #X obj 350 150 t b;
>>> #X msg 350 172 1;
>>> #X obj 390 150 t b;
>>> #X msg 390 172 0;
>>> #X obj 350 195 t f;
>>> #X msg 350 219 set \$1;
>>> #X text 118 122 rendering;
>>> #X connect 1 0 2 0;
>>> #X connect 2 0 3 0;
>>> #X connect 2 1 4 0;
>>> #X connect 3 0 5 0;
>>> #X connect 4 0 5 0;
>>> #X connect 5 0 8 0;
>>> #X connect 6 0 8 0;
>>> #X connect 7 0 9 0;
>>> #X connect 8 0 7 0;
>>> #X connect 8 1 10 0;
>>> #X connect 10 0 11 0;
>>> #X connect 10 1 13 0;
>>> #X connect 11 0 12 0;
>>> #X connect 12 0 15 0;
>>> #X connect 13 0 14 0;
>>> #X connect 14 0 15 0;
>>> #X connect 15 0 16 0;
>>> #X connect 16 0 0 0;
>>> #X coords 0 -1 1 1 85 40 1 100 100;
>>> #X restore 56 254 pd gemwin;
>>> #X msg 139 114 device 2;
>>> #X msg 69 114 device 0;
>>> #X connect 0 0 3 0;
>>> #X connect 2 0 1 0;
>>> #X connect 3 0 2 0;
>>> #X connect 5 0 3 0;
>>> #X connect 6 0 3 0;
>>>
>>>
>>> -----/\/\/\/\/\/\-----
>>> Bart Koppe
>>> bk at a-bort dot org
>>> http://a-bort.org
>>> -----\/\/\/\/\/\/-----
>>>
>>>
>>> _______________________________________________
>>> Pd-list at iem.at mailing list
>>> UNSUBSCRIBE and account-management ->
>>> http://lists.puredata.info/listinfo/pd-list
>>>
>>
>

-- 
-----/\/\/\/\/\/\-----	
Bart Koppe		
bk at a-bort dot org		
http://a-bort.org
-----\/\/\/\/\/\/-----





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