[参考译文] TDA4VH-Q1：关于图参数和节点参数的问题

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https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1482766/tda4vh-q1-questions-regarding-graphs-parameters-and-node-parameters

器件型号：TDA4VH-Q1

工具与软件：

尊敬的 TI：

我们需要以尽可能多的 FPS 持续记录 viss/LDC 输出图像。我想访问 VIS 和 LDC 输出缓冲器。问题：

1.是否可以访问由设置的缓冲区 tivxSetNodeParameterNumBufByIndex() TI API 呢？我已经阅读了 tiovx 图形流水线文档、其中提到应用只能访问图形参数缓冲区。这只是想确认。

2.在我的图形中、捕获节点输出是图形参数。我尝试将 vis 节点输出图像(params idx = 6)也设置为图形参数、但我获得的输出如下( 附加了录音 )我也收到了一些错误。(附加的终端 ss)

我已经阅读了有关如何创建 vis 节点输出作为图形参数的常见问题解答、我正在执行与我的应用中的单凸轮贴片中提到的完全相同的步骤。

捕获和 VIS 输出的缓冲器队列深度为4。

排队出队的代码片段如下所示：

/*!
    * CMS Graph pipeline enqueue references : pipe up + execute first reference
    * Pipe up -> Enqueue input references (NUM_BUFS - 1) times but do not trigger graph execution
    * Execute first reference -> after pipe up, now enqueue a buffer to trigger graph scheduling
    */
   for (buf_id = 0; buf_id < NUM_BUFS; buf_id++)
   {
      status = vxGraphParameterEnqueueReadyRef(class_ii_iv_graph_obj_ptr->graph,
                                               class_ii_iv_graph_obj_ptr->captureObj.graph_parameter_index,
                                               (vx_reference *)&class_ii_iv_graph_obj_ptr->captureObj.raw_image_out_arr[buf_id],
                                               1);
      if (status != VX_SUCCESS)
      {
         GEN3_DBG_PRINTF_ERR("ERROR: graph enqueue failed for capt cl2 cl4 out arr[%d], status = %d\n", buf_id, status);
      }
      status = vxGraphParameterEnqueueReadyRef(class_ii_iv_graph_obj_ptr->graph,
                                                class_ii_iv_graph_obj_ptr->vissObj.graph_parameter_index,
                                                (vx_reference *)&class_ii_iv_graph_obj_ptr->vissObj.out_arr[buf_id],
                                                1);
      if (status != VX_SUCCESS)
      {
         GEN3_DBG_PRINTF_ERR("ERROR: graph enqueue failed for capt cl2 cl4 out arr[%d], status = %d\n", buf_id, status);
      }
   }
 
   /* dequeue first and then after alternate executed reference from graph parameter.
    * check TIVX_OBJ_DESC_QUEUE_MAX_DEPTH if do not want to use dequeue.
    * enqueue back first or alternate reference into graph parameter after dequeue.
    */
   while (!class_ii_iv_graph_obj_ptr->stop_task_graph)
   {
      for (buf_id = 0; buf_id < NUM_BUFS; buf_id++)
      {
         /* Dequeue one image buffer */
         status = vxGraphParameterDequeueDoneRef(class_ii_iv_graph_obj_ptr->graph,
                                                 class_ii_iv_graph_obj_ptr->captureObj.graph_parameter_index,
                                                 (vx_reference *)&raw_image_temp,
                                                 1,
                                                 &num_refs);
         if (status != VX_SUCCESS)
         {
            GEN3_DBG_PRINTF_ERR("ERROR: graph dequeue failed for capt cl2 cl4 out arr[%d], status = %d\n", buf_id, status);
         }
         /* Dequeue one image buffer */
         status = vxGraphParameterDequeueDoneRef(class_ii_iv_graph_obj_ptr->graph,
                                                   class_ii_iv_graph_obj_ptr->vissObj.graph_parameter_index,
                                                   (vx_reference *)&viss_out_temp,
                                                   1,
                                                   &num_refs);
         if (status != VX_SUCCESS)
         {
            GEN3_DBG_PRINTF_ERR("ERROR: graph dequeue failed for viss cl2 cl4 out arr[%d], status = %d\n", buf_id, status);
         }
 
          status = vxGraphParameterEnqueueReadyRef(class_ii_iv_graph_obj_ptr->graph,
                                                  class_ii_iv_graph_obj_ptr->captureObj.graph_parameter_index,
                                                  (vx_reference *)&class_ii_iv_graph_obj_ptr->captureObj.raw_image_out_arr[buf_id],
                                                  1);
         if (status != VX_SUCCESS)
         {
            GEN3_DBG_PRINTF_ERR("ERROR: graph enqueue failed for capt cl2 cl4 out arr[%d], status = %d\n", buf_id, status);
         }
         status = vxGraphParameterEnqueueReadyRef(class_ii_iv_graph_obj_ptr->graph,
                                                   class_ii_iv_graph_obj_ptr->vissObj.graph_parameter_index,
                                                   (vx_reference *)&class_ii_iv_graph_obj_ptr->vissObj.out_arr[buf_id],
                                                   1);
         if (status != VX_SUCCESS)
         {
            GEN3_DBG_PRINTF_ERR("ERROR: graph enqueue failed for viss cl2 cl4 out arr[%d], status = %d\n", buf_id, status);
         }
      }
   }

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