what is this sink named "cam"?

[batchku]

I see that an OSC message like this will create a sink called "cam" for an existing layer:

/livedraw/layers/new CAM_LAYER_MINI_0 810 100 80 60, /livedraw/layers/CAM_LAYER_MINI_0/A/input/sink cam

what is the "cam" parameter, how do i get a full list of all available cameras, what happens if i have several and what would their other names be, etc.

[bakercp]

Currently openFrameworks has inadequate support for specifying the current camera. The best way to do it now is by experimentation with the id field in the grabbers.xml file.

<grabbers>
    <!-- listing grabbers until core has better support -->
    <grabber name="cam" id="0" width="640" height="480"/>
 <grabber name="cam1" id="1" width="640" height="480"/>
 <grabber name="cam2" id="2" width="640" height="480"/>

</grabbers>

The id is used to set the camera number. The name is not currently used (as setting the camera by name is not yet supported in oF -- although we're working on it).

[bakercp]

p.s. the "name" (e.g. cam or cam1) is used in the osc command. Currently this xml file simply creates a nameable link between the hardware index and a name that is easy to remember.