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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 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
      • 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?

            1 Reply Last reply Reply Quote 0
            • 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

                        1 Reply Last reply Reply Quote 0
                        • 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.

                              1 Reply Last reply Reply Quote 0
                              • 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

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

                                        @Eric-Katzfey

                                        For some reason now it is still struggling to find any device. I tried both cameras
                                        1ca5e655-0e4d-46c5-a1a7-75a232497ec7-image.png

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

                                          @Eric-Katzfey

                                          I know that it is there as ffmpeg picks up on it

                                          6daa081a-c811-465d-b76b-e9f2a8e8c107-image.png

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

                                            @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.

                                            wilkinsafW 1 Reply Last reply Reply Quote 0
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