[GEM-dev] unicap?

IOhannes m zmoelnig zmoelnig at iem.at
Tue Jan 11 16:58:10 CET 2011


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On 2011-01-11 16:29, kubro bubro wrote:
> im using now recent GEM: ver: 0.93.SVN rev3612M (i only added
> --enable-sse2 with ./configure)
> 
> when i create [pix_video], pd console shows only
> [pix_video]: backend #0='v4l2': v4l2 analog
> [pix_video]: backend #1='v4l'	: v4l analog
> 

this means that you don't have dc1394  nor dv4l


> but terminal from which pd was run displays:
> 
> 
> open: /etc/pd/gem.conf: No such file or directory
> open: /home/kubriel/.pd/gem.conf: No such file or directory
> open: ./gem.conf: No such file or directory
> load plugins 'video' in ''
> pattern : /usr/local/lib/pd/extra/Gem/gem_video*.so
> dylib loading file '/usr/local/lib/pd/extra/Gem/gem_videoDC1394.so'!

this only means that Gem can find a file "gem_videoDC1394.so".

if you do
# touch /usr/local/lib/pd/extra/Gem/gem_videoBURZEL.so
then you will get a message, that Gem tries to dlopen this file as well.

> 
> so it looks, that gem_videoDC1394.so is installed and loaded
> 

no.
it looks like videoDC1394 has been compiled without dc1394
headers/library installed; this results in an "empty" plugin file, that
will give you no additional functionality (hence it doesn't show up in
the backend list)

in order to get dc1394 support you have to install "libdc1394-22-dev"
(on debian and clones)

for dv4l support you will need to install "libraw1394-dev, libdv-dev
(libdv4-dev) and libiec61883-dev.

after you have installed the dependencies, you have to re-configure the
plugins and re-build them.

either do:
$ cd Gem/src
$ ./configure
$ make
$ make install

or do it separately for each file:
$ cd Gem/src
$ cd plugins/videoDC1394
$ ./configure
$ make
$ make install


> at evening i want to test it with device
> so i have to open video device with "device /dev/fw0" like with
> "/dev/video0"? or?
> 

yes.
apart from the fact, that it is likely /dev/fw1 rather than /dev/fw0

fgmad
IOhannes
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