TDA4VM: How to dump out_gpulut_array in app_srv_camera application ?

Mahipal Reddy Patlolla

Part Number: TDA4VM

Hi,

I am trying to dump out_gpulut_array using vxMapArrayRange() and I am getting following error

VX_ZONE_ERROR:[vxMapArrayRange:566] Invalid array range.

When I query the array using vxQueryArray(obj->out_gpulut_array, VX_ARRAY_NUMITEMS, &num_items, sizeof(num_items), num_items is '0' even after tivxGenerateGpulutNode() is executed. that's why vxMapArrayRange(0) is failing

I see that svGenerate_3D_GPULUT() is not using vxAddArrayItems() to update out_gpulut_array so how can i get access to the buffer from application to dump it to a file ?

Regards

Mahipal

over 4 years ago

+1 Lucas Weaver over 4 years ago

TI__Genius 13845 points

Hello Mahipal,

Your observation is correct, there is a bug in this kernel where the array num_items is not set. I have fixed this in the attached patch on top of 7.3 SDK. Please let me know if this fixes your issue.

Regards,

Lucas

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/791/0001_2D00_ADASVISION_2D00_4786_2D00_Adding_2D00_GPU_2D00_LUT_2D00_count_2D00_to_2D00_kernel.patch

0 Mahipal Reddy Patlolla over 4 years ago in reply to Lucas Weaver

Expert 2140 points

Hi Lucas,

I think, count in svGenerate_3D_GPULUT() is supposed to be

count = (((2 + sv->SVOutDisplayWidth / sv->subsampleratio)*(2 + sv->SVOutDisplayHeight / sv->subsampleratio))) * NUM_ELEMENTS;

Regards

Mahipal

0 Lucas Weaver over 4 years ago in reply to Mahipal Reddy Patlolla

TI__Genius 13845 points

Hello,

Yes, I believe you are correct. Please replace the count value in the patch with your suggestion.

Regards,

Lucas

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TDA4VM: How to dump out_gpulut_array in app_srv_camera application ?