gst_viewer shown Can’t open THETA X on lattepanda sigma (x86 CPU)

mummtaznim · October 7, 2024, 4:15pm

Hello, i have been trying to view the video stream using gst_viewer from libuvc_theta_sample on lattepanda board. I am using ricoh theta x but I don’t know why when I run the get_viewer the result always ‘THETA not found’. could you help me debug this? ThankYou

This is information for lsusb:

This is information for uvc:

I’ve already change the v4l2sink inside the libuvc-theta-sample package as follows:

This in information for v4l /dev/video0:

craig · October 7, 2024, 4:21pm

assuming an ubuntu or debian-based linux system, post the contents of:

apt list --installed |grep libuvc

You may have a duplicate libuvc that was installed with the base lattepanda OS.

mummtaznim · October 8, 2024, 1:34am

Yes, I’m using ubuntu 20.04 version in my device.

This is the response from that code. I don’t think there are multiple libuvc in my device sir.

craig · October 8, 2024, 1:47am

You downloaded libuvc from the RICOH repo, right?

In the sample app, please confirm you have defined USBPID_THETAX_UVC 0x2717

github.com

codetricity/libuvc-theta-sample/blob/60c49c561151e56721fa8ffd1f7dbcf54b1f0eda/gst/thetauvc.c#L44


      
          #include <stdlib.h>
          #include <string.h>
          #include <unistd.h>
          
          #include "libuvc/libuvc.h"
          #include "thetauvc.h"
          
          #define USBVID_RICOH 0x05ca
          #define USBPID_THETAV_UVC 0x2712
          #define USBPID_THETAZ1_UVC 0x2715
          #define USBPID_THETAX_UVC 0x2717
          
          
          struct thetauvc_mode {
          	unsigned int mode;
          	unsigned int width;
          	unsigned int height;
          	unsigned int fps;
          };
          
          typedef struct thetauvc_mode thetauvc_mode_t;

Also, that it is checking for the device in the if statement for idProduct

github.com

codetricity/libuvc-theta-sample/blob/60c49c561151e56721fa8ffd1f7dbcf54b1f0eda/gst/thetauvc.c#L107


      
          	*ret = NULL;
          
          	for (idx = 0, devcnt = 0; (dev = devlist[idx]) != NULL; idx++) {
          		uvc_device_descriptor_t *desc;
          
          		if (uvc_get_device_descriptor(dev, &desc) != UVC_SUCCESS)
          			continue;
          
          		if (desc->idProduct == USBPID_THETAV_UVC
          			|| desc->idProduct == USBPID_THETAZ1_UVC
          			|| desc->idProduct == USBPID_THETAX_UVC) {
          			void *tmp_ptr;
          
          			devcnt++;
          
          			tmp_ptr = realloc(ret, (devcnt+1) * sizeof(uvc_device_t *));
          			if (tmp_ptr == NULL) {
          				uvc_free_device_list(devlist, 1);
          				uvc_free_device_descriptor(desc);
          				free(ret);
          				return UVC_ERROR_NO_MEM;

mummtaznim · October 8, 2024, 2:01am

Yes sir, I download from that GitHub repository and I have already change those two adjustment as mentioned on the tutorial that you’ve made.

But from the previous reply, ‘apt list --installed |grep libuvc’ does not show libuvc version sir, there is only a WARNING as in the image I sent. Is that really the case sir?

craig · October 8, 2024, 2:25am

Assuming you ran sudo make install to install the modified libuvc.

Did you run the following?

sudo /sbin/ldconfig -v

make sure the camera is in live streaming mode
make sure the camera is not mounted as a storage device

This is an alternative

mummtaznim · October 8, 2024, 4:25am

These are the previous reply screenshot of thetauvc.c file inside the libuvc-theta-sample:

This is the build folder inside of the libuvc-theta package (already being build):

My ricoh theta X already in livestreaming mode and not mounted as a storage device sir:

mummtaznim · October 8, 2024, 4:29am

For the alternative (gstthetauvc) one, I also already install it and implement it using python cv2 library with this pipeline. Still the result “cannot open ricoh theta”

craig · October 8, 2024, 3:30pm

The pipeline is for a discrete NVIDIA graphics card. I’m assuming the lattepanda is using the GPU embedded in the CPU, the onboard N5105?

It should work with the onboard GPU, but you may need a different pipeline. Did the pipeline without gldownload work?

Post the camera firmware version. The newest THETA X firmware is 2.61.0

Information on upgrading the firmware is on this thread:

Reference

Intel Core i5-1340P - 12 core, 16 thread
Intel Iris Xe Graphics

opinion: should work really well.

mummtaznim · October 10, 2024, 2:54am

Hello mr craig, I’m sorry for the late response. Yes, my lattepanda is using GPU embedded in the CPU (CPU Intel Core i5-1340P and embedded GPU Intel Iris Xe Graphics)

This is the camera version and I think it’s already updated:

and this is the result after deleting the gldownload mr craig, it’s still producing the same result.