PROCESSOR-SDK-J721S2: Error message after modifying node input parameters

wang.rui48

Tool/software:

Hi TI expert,

I changed the third parameter of PixelVizNode from `vx_image in_img` to `vx_user_data_object od_data`, and the error message is as follows:

The od_data to be passed into the node here stores my`byd_interfaces_cam_od_list`(See pdf for details), so I suspect that there is a problem in the step of converting the custom structure `byd_interfaces_cam_od_list` to `vx_user_data_object od_tensor`.

The following pdf is the part I modified, please help me find the problem.

change part.pdf

3 months ago

0 Gokul S 3 months ago

TI__Genius 11440 points

Hi Wang,

Have you managed to change the function tivxAddKernelPixelViz() in the file $(psdkra)/vision_apps/kernels/img_proc/host/tivx_pixel_visualization_host.c

and also you have to modify the target kernel which is $(psdkra)/vision_apps/kernels/img_proc/c66/vx_pixel_visualization_target.c

You have to change wherever this parameter is used inside the kernel_process function, by default it will be type_casted to image type.

you have to modify this to process the user_data_object instead of image object.

Regards,
Gokul

0 wang.rui48 3 months ago in reply to Gokul S

Prodigy 220 points

Thank you very much for your reply! I have modified the part you mentioned, but still get the error `VX_ZONE_ERROR:[vxReplicateNode:2020] Invalid reference type` .

According to the log of the error screenshot below , We can see that I have successfully executed the `tivxAddKernelPixelViz` part in `tivx_pixel_visualization_host.c` , and the error is reported at the `vxReplicateNode` of `app_post_proc_moudle.c -> app_create_graph_post_proc` .

The following are screenshots of the parts I modified. Please check if there are any omissions or errors.Thank you very much for your review！

1. app_post_proc_moudle.c

2. kernels/img_proc/host/tivx_pixel_visualization_host.c

3. kernels/img_proc/host/tivx_img_proc_node_api.c

4. kernels/img_proc/c66/vx_pixel_visualization_target.c

0 Gokul S 3 months ago in reply to wang.rui48

TI__Genius 11440 points

Hi Wang,

If you want to replicate a parameter then it should be an element of object array. So you should create an object_array of user_data_object and then take 0th element of the object array and give it to node.

Refer to the the previous case where input_image is given from input_image_arr similarly you create for your user_data_object.

Regards,
Gokul

0 wang.rui48 3 months ago in reply to Gokul S

Prodigy 220 points

Thank you very much for your reply!

I understand what you mean, but my data is stored in a custom structure `byd_interfaces_cam_od_list`(As shown in the figure below), and I don't know how to put it into vx_object_array.

I searched the document and tried the following methods(As shown in the figure below), but still got an error `VX_ZONE_ERROR:[vxReplicateNode:2020] Invalid reference type`.

Is there a simple example of putting data from a custom structure into vx_object_array or vx_array?

0 Gokul S 3 months ago in reply to wang.rui48

TI__Genius 11440 points

Hi Wang,

You can see the postProcObj->output_image_arr creation part as a reference,
instead of crteating postProcObj->vx_od_data create postProcObj->vx_od_data_arr of type vx_object_array
and then follow the snippet,

vx_user_data_object od_data = vxCreateUserDataObject( context, "some_name", sizeof(byd_itnerfaces_cam_od_list), NULL);
postProcObj->vx_od_data_arr = vxCreateObjectArray(context, (vx_reference)od_data, NUM_CH);
status = vxReleaseUserDataObject(&od_data);

and then in the app_create_graph function
do the similar thing done for input_image_arr for your vx_od_data_arr

Regards,
Gokul

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PROCESSOR-SDK-J721S2: Error message after modifying node input parameters