[Error] Failed to allocate image at node

OpenVX
1

Hi

i can’t explain why i read this message into the console every time a process my graph:

[LOG] Failed to allocate image at node[0] user.kernel.dsi_to_world_wc parameter[0]

I think this is a standard message of OpenVX system, but where i can find more info about
the origin of this message?

The node is constructed in this way:


  vx_kernel kernel = vxAddKernel(context, const_cast<vx_char*>("user.kernel.dsi_to_world_wc"), USER_KERNEL_DSI_TO_WORLD_WC,
      DSItoWorldWC_kernel,
      DISPLAY_DSI_TO_WORLD_WC_KERNEL_NUM_PARAMETERS,    // numParams
      DSItoWorldWC_input_validate,
      DSItoWorldWC_output_validate,
      NULL, // init
      NULL  // deinit
  );

The kernel function is implemented as follow:


vx_status DSItoWorldWC_kernel(vx_node node, const vx_reference *parameters, vx_uint32 num)
{
    //#############################################################
    //# --> Kernel processing code here
    //#
    vx_context context = vxGetContext((vx_reference)node);

    //check number of parameters
    if (num != DISPLAY_DSI_TO_WORLD_WC_KERNEL_NUM_PARAMETERS)
      {
        std::cout << "DSItoWorldWC_kernel(): invalid num of params! Expected " << (vx_int32)DISPLAY_DSI_TO_WORLD_WC_KERNEL_NUM_PARAMETERS << " params but node recieves " << num << std::endl; 
        return VX_FAILURE;
    }


    //set input/output parameters
    vx_image src_image = (vx_image)parameters[0];        //DSI image
    ... other kernel parameters..


    vx_status src_image_status = vxGetStatus((vx_reference)src_image);
    if(src_image_status != VX_SUCCESS){
        std::cout<<"Problem with DSI image! Image status: " << src_image_status <<std::endl;
        return  VX_FAILURE;
    }

Into the graph i connected the node in this way:


    //
    //  NOTE the input image is a field declared as "vx_image vx_dsi_image;" of a structure

    vx_array RearR_rows_x = vxCreateArray(context_, VX_TYPE_FLOAT32, RearR_img_width_*RearR_img_height_ );
    CHECK_VX_OBJECT(RearR_rows_x);
    vx_array RearR_cols_y = vxCreateArray(context_, VX_TYPE_FLOAT32, RearR_img_width_*RearR_img_height_ );
    CHECK_VX_OBJECT(RearR_cols_y);
    vx_array RearR_height_z = vxCreateArray(context_, VX_TYPE_FLOAT32, RearR_img_width_*RearR_img_height_ );
    CHECK_VX_OBJECT(RearR_height_z);

    RearR_dsi_to_world_node_ = DSItoWorldWCNode(main_graph_, stereo_systems[sp::Rear].vx_dsi_image, ... other parameters);
    CHECK_VX_OBJECT(RearR_dsi_to_world_node_);

The dsi image is loaded into memory before to process the graph.