hi,
first, i would like to thank iohannes for his advices and the time he spent to explain me how to contribute to Gem development : git tuto, coding advices, and so and so... I tried to follow all the things as close as possible and I made some changes in videoV4L2 plugin to be able to choose a device with its physical bus location. I also added 3 properties : driver, card and bus_info bus_info is the device's bus location and could be used as an argument to [open( message card is the name of the device (ie : Built in I-sight) and driver is the used driver
i didn't want to put some backend specific code in pix_video.cpp so I only work on videoV4L2.cpp but to open a device with it's bus location, i'm assuming that all paths to devices start with a slash '/' it could be a limitation but i didn't find a better way... i've updated the pix_video-help.pd patch with the add of a v4l2-specific abstraction to explain what i've done
all the things are in the branch *videoV4L2* on my github repos : git://github.com/avilleret/Gem.git
hope this help and i hope i've done the things in the right way this time :-) feedbacks are welcome
best
antoine