[PD] pix_video + firewire problem

[gnd at itchybit.org]

Hi !

Thanks for the suggestion ! It worked perfectly !
Im gonna try also the git repo

best,

gnd/

On 2014-08-12 16:13, Antoine Villeret wrote:
> I just checked 0.93.3 out on a Ubuntu 12.04 32bit system.
> And it suffer from the same issue reported in [1].
> Note that I also give a workaround there to build DV plugin despite 
> of the
> issue.
>
> [1] https://github.com/umlaeute/Gem/issues/38
>
> --
> do it yourself
> http://antoine.villeret.free.fr
>
>
> 2014-08-12 15:06 GMT+02:00 Antoine Villeret 
> <antoine.villeret at gmail.com>:
>
>> hi,
>>
>> if you can `dvgrab` your camera, then your camera has a DV link 
>> interface.
>> `dc1394` is not the same and it's intended for industrial IIDC 
>> compliant
>> cameras.
>> You *cannot* grab a DV camera with the DC1394 library, see [1].
>>
>> To use your DV camera with Gem, you need either to compile the 
>> `videoDV4L`
>> plugin or to use a V4L wrapper for DV camcorder [2].
>>  You can also try the Unicap plugin, but I'm not sure if it supports 
>> DV
>> cam.
>>
>> Unfortunately, I'm unable to build the videoDV4L plugin on Ubuntu 
>> 14.04.
>> `./configure` says DV plugin is enable (but is it the same ?) but 
>> the is
>> no gem_videoDV4L.so.
>> I'll file a bug report for this.
>>
>> Maybe this plugin works in 0.93.3 release, I never tried it before.
>> if you build Gem yourself, please consider the use of the git repo 
>> [3].
>> there are *lots* of improvements since 0.93.3 release.
>> The latest build system update will give you more information about 
>> which
>> plugins are actually enabled when configuring.
>>
>> +
>> A
>>
>> [1] :
>> 
>> http://damien.douxchamps.net/ieee1394/libdc1394/faq/#Can_I_use_it_for_my_DV_camcorder
>> [2] : https://sourceforge.net/projects/dv4l.berlios/
>> [3] : git://git.code.sf.net/p/pd-gem/gem
>>
>> --
>> do it yourself
>> http://antoine.villeret.free.fr
>>
>>
>> 2014-08-10 23:55 GMT+02:00 <gnd at itchybit.org>:
>>
>> Hi,
>>>
>>> im running a clean install of Ubuntu 12.04, with Puredata 0.43.0-4 
>>> from
>>> Ubuntu repos, with a compiled Gem-0.93.3.
>>>
>>> Configure output of Gem shows:
>>>
>>> capture-support
>>>     use PLUGINS          : yes
>>>     use v4l              : yes (libv4l)
>>>     use v4l2             : yes (libv4l)
>>>     use ieee1394         : yes ( libdc1394 )
>>>
>>> When i connect the dv device i see in dmesg:
>>>
>>> [14522.765477] firewire_core: phy config: card 0, new root=ffc1,
>>> gap_count=5
>>> [14522.765695] firewire_core: phy config: card 0, new root=ffc1,
>>> gap_count=5
>>> [14523.269924] firewire_core: created device fw1: GUID 
>>> 002011010f002781,
>>> S400
>>>
>>> Im able to dvgrab from the device without problems.
>>>
>>> When i create pix_video i see in console:
>>>
>>> [pix_video]: backend #0='v4l2'  : v4l2 analog
>>> [pix_video]: backend #1='v4l'   : v4l analog
>>> [pix_video]: backend #2='dc1394'        : dc1394 iidc
>>>
>>> When i send [driver dv( to pix_video:
>>>
>>> videoctl: driver dv
>>> [pix_video]: could not find a backend for driver 'dv'
>>>
>>> When i send [device /dev/fw1( to pix_video:
>>>
>>> videoctl: device /dev/fw1
>>> Cannot open '/dev/fw1': 25, Inappropriate ioctl for device
>>> videoDC1394: no cameras found
>>>
>>> I try to set [driver 2(:
>>>
>>> videoDC1394: no cameras found
>>>
>>> I send now [device /dev/fw1( to pix_video:
>>>
>>> videoctl: device /dev/fw1
>>> videoDC1394: no cameras found
>>>
>>> and so on ..
>>>
>>> The device is there (i chmoded it to 777 to make sure)
>>>
>>> # ls -la /dev|grep fw
>>> crwxrwxrwx   1 root root    251,   0 Aug 10 19:41 fw0
>>> crwxrwxrwx+  1 root video   251,   1 Aug 10 23:43 fw1
>>>
>>> this is my kernel:
>>>
>>> 3.2.0-65-lowlatency #68-Ubuntu SMP PREEMPT
>>>
>>> Does anyone have any idea what could be wrong ? I guess it must be 
>>> sth
>>> stupid and trivial..
>>>
>>> thx & regards,
>>>
>>>
>>> gnd/
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>>
>>
>>