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    voxl-streamer client repetitive connect/disconnect

    Ask your questions right here!
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    • W
      wilkinsaf ModalAI Team @Eric Katzfey
      last edited by 22 Dec 2021, 03:25

      @Eric-Katzfey Will it remain public?

      E 1 Reply Last reply 23 Dec 2021, 15:48 Reply Quote 0
      • E
        Eric Katzfey ModalAI Team @wilkinsaf
        last edited by 23 Dec 2021, 15:48

        @wilkinsaf Yes, it will remain public. Did you get a chance to see if the changes worked?

        W 2 Replies Last reply 27 Dec 2021, 19:39 Reply Quote 0
        • W
          wilkinsaf ModalAI Team @Eric Katzfey
          last edited by 27 Dec 2021, 19:39

          @Eric-Katzfey Testing out today

          1 Reply Last reply Reply Quote 0
          • W
            wilkinsaf ModalAI Team @Eric Katzfey
            last edited by 28 Dec 2021, 18:46

            @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

            E 2 Replies Last reply 28 Dec 2021, 18:58 Reply Quote 0
            • E
              Eric Katzfey ModalAI Team @wilkinsaf
              last edited by 28 Dec 2021, 18:58

              @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?

              W 1 Reply Last reply 28 Dec 2021, 18:59 Reply Quote 0
              • W
                wilkinsaf ModalAI Team @Eric Katzfey
                last edited by 28 Dec 2021, 18:59

                @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

                1 Reply Last reply Reply Quote 0
                • E
                  Eric Katzfey ModalAI Team @wilkinsaf
                  last edited by 28 Dec 2021, 19:00

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

                  W 1 Reply Last reply 28 Dec 2021, 20:52 Reply Quote 0
                  • W
                    wilkinsaf ModalAI Team @Eric Katzfey
                    last edited by wilkinsaf 28 Dec 2021, 20:53 28 Dec 2021, 20:52

                    @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?

                    E 2 Replies Last reply 28 Dec 2021, 20:56 Reply Quote 0
                    • E
                      Eric Katzfey ModalAI Team @wilkinsaf
                      last edited by 28 Dec 2021, 20:56

                      @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?

                      1 Reply Last reply Reply Quote 0
                      • E
                        Eric Katzfey ModalAI Team @wilkinsaf
                        last edited by 28 Dec 2021, 20:57

                        @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.

                        W 3 Replies Last reply 28 Dec 2021, 21:53 Reply Quote 0
                        • W
                          wilkinsaf ModalAI Team @Eric Katzfey
                          last edited by 28 Dec 2021, 21:53

                          @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

                          E 1 Reply Last reply 28 Dec 2021, 22:26 Reply Quote 0
                          • W
                            wilkinsaf ModalAI Team @Eric Katzfey
                            last edited by 28 Dec 2021, 21:59

                            @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

                            E 1 Reply Last reply 28 Dec 2021, 22:08 Reply Quote 0
                            • W
                              wilkinsaf ModalAI Team @Eric Katzfey
                              last edited by 28 Dec 2021, 22:05

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

                              E 1 Reply Last reply 28 Dec 2021, 22:15 Reply Quote 0
                              • E
                                Eric Katzfey ModalAI Team @wilkinsaf
                                last edited by 28 Dec 2021, 22:08

                                @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).

                                W 1 Reply Last reply 28 Dec 2021, 22:15 Reply Quote 0
                                • W
                                  wilkinsaf ModalAI Team @Eric Katzfey
                                  last edited by 28 Dec 2021, 22:15

                                  @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

                                  1 Reply Last reply Reply Quote 0
                                  • E
                                    Eric Katzfey ModalAI Team @wilkinsaf
                                    last edited by 28 Dec 2021, 22:15

                                    @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.

                                    W 1 Reply Last reply 28 Dec 2021, 22:17 Reply Quote 0
                                    • W
                                      wilkinsaf ModalAI Team @Eric Katzfey
                                      last edited by wilkinsaf 28 Dec 2021, 22:18 28 Dec 2021, 22:17

                                      @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

                                      E 1 Reply Last reply 28 Dec 2021, 22:20 Reply Quote 0
                                      • E
                                        Eric Katzfey ModalAI Team @wilkinsaf
                                        last edited by 28 Dec 2021, 22:20

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

                                        1 Reply Last reply Reply Quote 0
                                        • E
                                          Eric Katzfey ModalAI Team @wilkinsaf
                                          last edited by 28 Dec 2021, 22:26

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

                                          W 1 Reply Last reply 28 Dec 2021, 22:30 Reply Quote 0
                                          • W
                                            wilkinsaf ModalAI Team @Eric Katzfey
                                            last edited by 28 Dec 2021, 22:30

                                            @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

                                            E 1 Reply Last reply 28 Dec 2021, 22:44 Reply Quote 0
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