diff --git a/kernels/img_proc/c66/vx_dl_pre_proc_target.c b/kernels/img_proc/c66/vx_dl_pre_proc_target.c
index 9b9b892..4e64d79 100644
--- a/kernels/img_proc/c66/vx_dl_pre_proc_target.c
+++ b/kernels/img_proc/c66/vx_dl_pre_proc_target.c
@@ -111,8 +111,16 @@ typedef struct {
     uint64_t l2_global_base;
     uint32_t alloc_size;
 
+    /**< Id of active channel,duwei add*/
+    uint32_t active_channel;
+
 } tivxDLPreProcKernelParams;
 
+static vx_status VX_CALLBACK tivxKernelDLPreProcControl(
+       tivx_target_kernel_instance kernel,
+       uint32_t node_cmd_id, tivx_obj_desc_t *obj_desc[],
+       uint16_t num_params, void *priv_arg);
+
 static tivx_target_kernel vx_dl_pre_proc_target_kernel = NULL;
 
 static vx_status VX_CALLBACK tivxKernelDLPreProcCreate
@@ -485,6 +493,96 @@ static vx_status VX_CALLBACK tivxKernelDLPreProcDelete(
     return (status);
 }
 
+
+static vx_status tivxPreProcSwitchChannel(tivxDLPreProcKernelParams *preproc,
+    const tivx_obj_desc_user_data_object_t *usr_data_obj)
+{
+    vx_status                             status = (vx_status)VX_SUCCESS;
+    tivx_preproc_select_channel_params_t *ch_prms = NULL;
+    void                                 *target_ptr;
+
+    if (NULL != usr_data_obj)
+    {
+        target_ptr = tivxMemShared2TargetPtr(&usr_data_obj->mem_ptr);
+
+        tivxCheckStatus(&status, tivxMemBufferMap(target_ptr, usr_data_obj->mem_size,
+            (vx_enum)VX_MEMORY_TYPE_HOST, (vx_enum)VX_READ_ONLY));
+
+        if (sizeof(tivx_preproc_select_channel_params_t) ==
+                usr_data_obj->mem_size)
+        {
+            ch_prms = (tivx_preproc_select_channel_params_t *)target_ptr;
+            preproc->active_channel = ch_prms->active_channel_id;
+        }
+        else
+        {
+            VX_PRINT(VX_ZONE_ERROR, "Invalid Size \n");
+            status = (vx_status)VX_ERROR_INVALID_PARAMETERS;
+        }
+
+        tivxCheckStatus(&status, tivxMemBufferUnmap(target_ptr, usr_data_obj->mem_size,
+            (vx_enum)VX_MEMORY_TYPE_HOST, (vx_enum)VX_READ_ONLY));
+    }
+    else
+    {
+        VX_PRINT(VX_ZONE_ERROR, "User Data Object is NULL \n");
+        status = (vx_status)VX_ERROR_INVALID_PARAMETERS;
+    }
+
+    return (status);
+}
+
+static vx_status VX_CALLBACK tivxKernelDLPreProcControl(
+       tivx_target_kernel_instance kernel,
+       uint32_t node_cmd_id, tivx_obj_desc_t *obj_desc[],
+       uint16_t num_params, void *priv_arg)
+{
+    vx_status            status = (vx_status)VX_SUCCESS;
+    uint32_t             size;
+    tivxDLPreProcKernelParams   *preproc = NULL;
+
+    status = tivxGetTargetKernelInstanceContext(kernel,
+        (void **)&preproc, &size);
+
+    if ((vx_status)VX_SUCCESS != status)
+    {
+        VX_PRINT(VX_ZONE_ERROR, "Failed to Get Target Kernel Instance Context\n");
+    }
+    else if ((NULL == preproc) ||
+        (sizeof(tivxDLPreProcKernelParams) != size))
+    {
+        VX_PRINT(VX_ZONE_ERROR, "Invalid Object Size\n");
+        status = (vx_status)VX_FAILURE;
+    }
+    else
+    {
+        /* do nothing */
+    }
+
+    if ((vx_status)VX_SUCCESS == status)
+    {
+        switch (node_cmd_id)
+        {
+            case TIVX_PREPROC_SELECT_CHANNEL:
+            {
+                status = tivxPreProcSwitchChannel(preproc,
+                    (tivx_obj_desc_user_data_object_t *)obj_desc[0U]);
+                break;
+            }
+            default:
+            {
+                VX_PRINT(VX_ZONE_ERROR, "Invalid Command Id\n");
+                status = (vx_status)VX_FAILURE;
+                break;
+            }
+        }
+    }
+
+    return (status);
+}
+
+
 static inline void convertYCbCrToRGB(int32_t Y, int32_t Cb, int32_t Cr, float *R, float *G, float *B, float min_val, float max_val)
 {
     Y  = Y - 16;
@@ -2390,7 +2488,7 @@ void tivxAddTargetKernelDLPreProc()
                                             tivxKernelDLPreProcProcess,
                                             tivxKernelDLPreProcCreate,
                                             tivxKernelDLPreProcDelete,
-                                            NULL,
+                                            tivxKernelDLPreProcControl,
                                             NULL
                                         );
     }
(END)