Multiple ueye_cams with criss-crossed streams

[stonier]

Wondering if anyone here has this experience...

• Two ueye_cams with different device ids
• Two ueye_cam nodes with two instances rqt_iamge_view connecting to each node (so they should get into streaming mode)
• Both cameras connect, are in use, but both show the same image stream

This isn't a ueye_cam problem either. We observe the same effect with two launches of idscameramanager.

@jmackay2 @anqixu

[stonier]

FYI @ChrisFajardo-TRI

[ChrisFajardo-TRI]

Here's a behavior we're reproducing

1. launch camera A node
   camera A goes to streaming mode

2. launch camera B node
   camera B does not go to streaming mode (will timeout at is_CaptureVideo)

3. terminate and restart camera A node
   camera A and camera B both go to streaming mode
   however both camera A and camera B both stream camera A's images on both camera A and B topics

[ChrisFajardo-TRI]

@stonier you can close this

found from idscameramanager that both cameras had multicast was enabled with same IP, so disabling multicast fixes things

[stonier]

Might leave it open - would be nice to be able to detect the situation and warn from this driver and additionally have a means to configure it from here (instead of idscameramanager).

@ChrisFajardo-TRI has pointed us at is_Multicast and IS_AMC_CMD_SET_MC_ENABLED in the IDS SDK as a possible means to do so.

[jmackay2]

I haven't used multicast in my multi-camera setups in the past, so I haven't run into this issue before.