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    voxl-streamer client repetitive connect/disconnect

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    • wilkinsafW
      wilkinsaf ModalAI Team @Eric Katzfey
      last edited by

      @Eric-Katzfey Testing out today

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      • wilkinsafW
        wilkinsaf ModalAI Team @Eric Katzfey
        last edited by

        @Eric-Katzfey

        We seem to be having trouble finding the camera now which is weird. I wonder if we need to specifically download and install the drivers?

        2f9579c4-88ea-4693-b7a8-e67415540bad-image.png

        Eric KatzfeyE 2 Replies Last reply Reply Quote 0
        • Eric KatzfeyE
          Eric Katzfey ModalAI Team @wilkinsaf
          last edited by

          @wilkinsaf No, you shouldn't need any drivers. Any USB device should be listed with lsusb, even without any specific drivers. Does it show up when plugged into a regular Linux computer?

          wilkinsafW 1 Reply Last reply Reply Quote 0
          • wilkinsafW
            wilkinsaf ModalAI Team @Eric Katzfey
            last edited by

            @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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            • Eric KatzfeyE
              Eric Katzfey ModalAI Team @wilkinsaf
              last edited by

              @wilkinsaf If you unplug the camera from Voxl does anything disappear from the lsusb list?

              wilkinsafW 1 Reply Last reply Reply Quote 0
              • wilkinsafW
                wilkinsaf ModalAI Team @Eric Katzfey
                last edited by wilkinsaf

                @Eric-Katzfey

                Yes, the top 3 entries in lsusb screenshots above are all cameras. I can unplug those one by one and see them disappear.
                Would it matter if we have 2 UVC cameras?

                Eric KatzfeyE 2 Replies Last reply Reply Quote 0
                • Eric KatzfeyE
                  Eric Katzfey ModalAI Team @wilkinsaf
                  last edited by

                  @wilkinsaf Just try one at a time for now. And when you plug the camera in do you see a new /dev/videoX entry appear?

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                  • Eric KatzfeyE
                    Eric Katzfey ModalAI Team @wilkinsaf
                    last edited by

                    @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.

                    wilkinsafW 3 Replies Last reply Reply Quote 0
                    • wilkinsafW
                      wilkinsaf ModalAI Team @Eric Katzfey
                      last edited by

                      @Eric-Katzfey

                      Yes, let me try one at a time now.
                      Here are the two cameras

                      4de39b51-2708-4707-a1fe-d67161270aa3-image.png ![0_1640728100493_PXL_20211228_214717072.jpg](Uploading 100%)

                      1. Banggood URL

                      2. Blue Robotics URL

                      Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                      • wilkinsafW
                        wilkinsaf ModalAI Team @Eric Katzfey
                        last edited by

                        @Eric-Katzfey

                        Good news, I was able to get voxl-uvc-server to spin up with one usb camera connected.
                        21d09d1b-d888-45a2-a663-51af22ab926b-image.png

                        However, I am getting this issue from voxl-streamer
                        cc766c80-29ad-4160-8191-964e40998ea5-image.png

                        Seems like I need to figure out the frame size and set the correct one. Let me play around with that now

                        Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                        • wilkinsafW
                          wilkinsaf ModalAI Team @Eric Katzfey
                          last edited by

                          @Eric-Katzfey Doesn't look to be frame size as the "sizes" seem non-deterministic
                          f7371975-b223-4f6e-a9f0-3e2b3e744c26-image.png

                          Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                          • Eric KatzfeyE
                            Eric Katzfey ModalAI Team @wilkinsaf
                            last edited by

                            @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).

                            wilkinsafW 1 Reply Last reply Reply Quote 0
                            • wilkinsafW
                              wilkinsaf ModalAI Team @Eric Katzfey
                              last edited by

                              @Eric-Katzfey

                              Good suggestion. Let me try that.
                              Check out the length when uvc server fires up

                              Got frame callback! frame_format = 3, width = 640, height = 480, length = 613376, ptr = 0
                              

                              interesting

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                              • Eric KatzfeyE
                                Eric Katzfey ModalAI Team @wilkinsaf
                                last edited by

                                @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.

                                wilkinsafW 1 Reply Last reply Reply Quote 0
                                • wilkinsafW
                                  wilkinsaf ModalAI Team @Eric Katzfey
                                  last edited by wilkinsaf

                                  @Eric-Katzfey Sounds good.

                                  The other camera is giving me this error
                                  dab62085-ee06-487d-97c0-99bcd228e382-image.png

                                  The one I compiled could not find the device at all
                                  ad11d578-596e-44b3-b240-049dea293fa4-image.png

                                  Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                                  • Eric KatzfeyE
                                    Eric Katzfey ModalAI Team @wilkinsaf
                                    last edited by

                                    @wilkinsaf Perhaps you are working on master branch? The latest and greatest (The one you should be using) is the dev branch.

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                                    • Eric KatzfeyE
                                      Eric Katzfey ModalAI Team @wilkinsaf
                                      last edited by

                                      @wilkinsaf Thanks! I'm going to order them so that I can have them as part of our normal USB UVC camera test suite.

                                      wilkinsafW 1 Reply Last reply Reply Quote 0
                                      • wilkinsafW
                                        wilkinsaf ModalAI Team @Eric Katzfey
                                        last edited by

                                        @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
                                        19c8da6a-c943-40f8-85b4-350d52459372-image.png

                                        Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                                        • Eric KatzfeyE
                                          Eric Katzfey ModalAI Team @wilkinsaf
                                          last edited by

                                          @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?

                                          wilkinsafW 3 Replies Last reply Reply Quote 0
                                          • wilkinsafW
                                            wilkinsaf ModalAI Team @Eric Katzfey
                                            last edited by

                                            @Eric-Katzfey ope, almost forgot. Yes, let me do that now

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