voxl-streamer client repetitive connect/disconnect
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@Eric-Katzfey Yes, we have hardwired it into a computer before. We have seen the stream using ffmpeg on VOXL as well. We just can not seem to get voxl-streamer to work with it
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@wilkinsaf If you unplug the camera from Voxl does anything disappear from the
lsusblist? -
Yes, the top 3 entries in
lsusbscreenshots above are all cameras. I can unplug those one by one and see them disappear.
Would it matter if we have 2 UVC cameras? -
@wilkinsaf Just try one at a time for now. And when you plug the camera in do you see a new
/dev/videoXentry appear? -
@wilkinsaf Also, were you able to get the ordering information for these cameras? If they aren't too expensive I would like to order at least one of them to test against.
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Yes, let me try one at a time now.
Here are the two cameras
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Good news, I was able to get voxl-uvc-server to spin up with one usb camera connected.
However, I am getting this issue from voxl-streamer
Seems like I need to figure out the frame size and set the correct one. Let me play around with that now
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@Eric-Katzfey Doesn't look to be frame size as the "sizes" seem non-deterministic
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@wilkinsaf Great, that's some progress! What about if you try the other camera? Not sure why the frame length is different. For a given resolution and frame format that number should be a constant. (e.g. 640 x 480 x 2).
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Good suggestion. Let me try that.
Check out the length when uvc server fires upGot frame callback! frame_format = 3, width = 640, height = 480, length = 613376, ptr = 0interesting
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@wilkinsaf You can try modifying this line in voxl-uvc-server: https://gitlab.com/voxl-public/modal-pipe-architecture/voxl-uvc-server/-/blob/dev/src/main.c#L83
Make it read:
.size_bytes = 614400, \Then rebuild it and try again.
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@Eric-Katzfey Sounds good.
The other camera is giving me this error
The one I compiled could not find the device at all
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@wilkinsaf Perhaps you are working on
masterbranch? The latest and greatest (The one you should be using) is thedevbranch. -
@wilkinsaf Thanks! I'm going to order them so that I can have them as part of our normal USB UVC camera test suite.
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@Eric-Katzfey Thanks Eric!
I switched to dev branch (slightly embarrassing as you told me to switch to dev) and pull
voxl:~/voxl-uvc-server(dev)$ git pull origin dev From https://gitlab.com/voxl-public/modal-pipe-architecture/voxl-uvc-server * branch dev -> FETCH_HEAD Already up-to-date.I made sure to install the correct libuvc ipk
voxl:~$ opkg install libuvc_1.0.2_202112182223.ipk Collected errors: * opkg_prepare_file_for_install: Refusing to load file 'libuvc_1.0.2_202112182223.ipk' as it matches the installed version of libuvc (1.0.2).I then built the voxl-uvc-server, ran Makefile, and tried to run
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@wilkinsaf Okay, interesting. Let's go back to the original camera with the incorrect size. Can you add the patch I suggested and see if you can make that camera work?
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@Eric-Katzfey ope, almost forgot. Yes, let me do that now
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For some reason now it is still struggling to find any device. I tried both cameras
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@wilkinsaf Unfortunately, it's hard to debug this without actually having the camera in my test setup. I've never seen a camera stop being detected like that. I did order the cameras but won't have them in my possession until the 9th of January.
