TDA4VM: TDA4 tidl segment demo question

static void createOutputTensors(vx_context context, vx_user_data_object config, vx_tensor output_tensors[])
{
    vx_size   input_sizes[APP_MAX_TENSOR_DIMS];
    vx_map_id map_id_config;

    vx_uint32 id;

    tivxTIDLJ7Params *tidlParams;
    sTIDL_IOBufDesc_t *ioBufDesc;

    vxMapUserDataObject(config, 0, sizeof(tivxTIDLJ7Params), &map_id_config,
                      (void **)&tidlParams, VX_READ_ONLY, VX_MEMORY_TYPE_HOST, 0);

    ioBufDesc = (sTIDL_IOBufDesc_t *)&tidlParams->ioBufDesc;
    for(id = 0; id < ioBufDesc->numInputBuf; id++) 
    {
        input_sizes[0] = ioBufDesc->inWidth[id]  + ioBufDesc->inPadL[id] + ioBufDesc->inPadR[id];
        input_sizes[1] = ioBufDesc->inHeight[id] + ioBufDesc->inPadT[id] + ioBufDesc->inPadB[id];
        input_sizes[2] = ioBufDesc->inNumChannels[id];

        vx_enum data_type = get_vx_tensor_datatype(ioBufDesc->inElementType[id]);
        output_tensors[id] = vxCreateTensor(context, 3, input_sizes, data_type, 0);
    }

    vxUnmapUserDataObject(config, map_id_config);

    return;
}