[GEM-dev] unicap?

[IOhannes m zmoelnig]

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On 2011-01-11 21:03, kubro bubro wrote:
> everything seems to be working, expect video input.
> 
> after creating [pix_video]
> [pix_video]: backend #0='v4l2'	: v4l2 analog
> [pix_video]: backend #1='v4l'	: v4l analog
> [pix_video]: backend #2='dv4l'	: dv4l dv
> [pix_video]: backend #3='dc1394'	: dc1394 iidc

cool

> 
> with message "enummerate" i got
> info: devices 1
> info: device /dev/fw1 dv4l

which means that Gem found one device named "/dev/fw1", and it's using
the dv4l backend.

> 
> but with "device 3" i got

why do you use "device 3"?

> error: videoDC1394: no cameras found

this has several reasons:
#1: enumerate told you that there is exactly 1 device; you requested
device#3, which is obviously not there.
#2: according to what enumerate told you, the 1 device it found is a
DV4L device (that is: an ordinary "dv" device, rather than a IIDC device)

> 
> i ran puredata with root privileges
> 

no need for that.
just make sure that you have read/write perms on the devices you want to
access.
actually i would highly encourage you to _not_ run pd as root, and
instead change the perms for /dev/fw1 so you can access it (for testing
a quick "sudo chmod a+rw /dev/fw1" should be enough, but on the long run
you should read the udev documentation and make sure that devices
created for your camera are g+rw and belong to a group you are member of
(e.g. "video"))

> 
> 

so the main obstacle you are facing seems to be how to tell Gem to open
the correct device.

since "enumerate" tells you, that there is exactly one available device
named "/dev/fw1", i would _strongly_ suggest that you try
[device /dev/fw1(

given that this is the third time in this thread that i hint to you that
the proper device name could be "/dev/fw1", i would suggest you try it :-)


fgmasdr
IOhannes







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