dnn/native: unify error return to DNN_ERROR

Unify all error return as DNN_ERROR, in order to cease model executing
when return error in ff_dnn_execute_model_native layer_func.pf_exec

Signed-off-by: Ting Fu <ting.fu@intel.com>

libavfilter/dnn/dnn_backend_native.c

@@ -246,10 +246,12 @@ DNNReturnType ff_dnn_execute_model_native(const DNNModel *model, DNNData *output
 
     for (layer = 0; layer < native_model->layers_num; ++layer){
         DNNLayerType layer_type = native_model->layers[layer].type;
-        layer_funcs[layer_type].pf_exec(native_model->operands,
-                                        native_model->layers[layer].input_operand_indexes,
-                                        native_model->layers[layer].output_operand_index,
-                                        native_model->layers[layer].params);
+        if (layer_funcs[layer_type].pf_exec(native_model->operands,
+                                            native_model->layers[layer].input_operand_indexes,
+                                            native_model->layers[layer].output_operand_index,
+                                            native_model->layers[layer].params) == DNN_ERROR) {
+            return DNN_ERROR;
+        }
     }
 
     for (uint32_t i = 0; i < nb_output; ++i) {

libavfilter/dnn/dnn_backend_native_layer_avgpool.c

@@ -109,7 +109,7 @@ int dnn_execute_layer_avg_pool(DnnOperand *operands, const int32_t *input_operan
     output_operand->length = calculate_operand_data_length(output_operand);
     output_operand->data = av_realloc(output_operand->data, output_operand->length);
     if (!output_operand->data)
-        return -1;
+        return DNN_ERROR;
     output = output_operand->data;
 
     for (int y = 0; y < height_end; y += kernel_strides) {

libavfilter/dnn/dnn_backend_native_layer_conv2d.c

@@ -114,10 +114,10 @@ int dnn_execute_layer_conv2d(DnnOperand *operands, const int32_t *input_operand_
     output_operand->data_type = operands[input_operand_index].data_type;
     output_operand->length = calculate_operand_data_length(output_operand);
     if (output_operand->length <= 0)
-        return -1;
+        return DNN_ERROR;
     output_operand->data = av_realloc(output_operand->data, output_operand->length);
     if (!output_operand->data)
-        return -1;
+        return DNN_ERROR;
     output = output_operand->data;
 
     av_assert0(channel == conv_params->input_num);

libavfilter/dnn/dnn_backend_native_layer_depth2space.c

@@ -76,10 +76,10 @@ int dnn_execute_layer_depth2space(DnnOperand *operands, const int32_t *input_ope
     output_operand->data_type = operands[input_operand_index].data_type;
     output_operand->length = calculate_operand_data_length(output_operand);
     if (output_operand->length <= 0)
-        return -1;
+        return DNN_ERROR;
     output_operand->data = av_realloc(output_operand->data, output_operand->length);
     if (!output_operand->data)
-        return -1;
+        return DNN_ERROR;
     output = output_operand->data;
 
     for (y = 0; y < height; ++y){

libavfilter/dnn/dnn_backend_native_layer_mathbinary.c

@@ -186,6 +186,6 @@ int dnn_execute_layer_math_binary(DnnOperand *operands, const int32_t *input_ope
         math_binary_not_commutative(floormod, params, input, output, operands, input_operand_indexes);
         return 0;
     default:
-        return -1;
+        return DNN_ERROR;
     }
 }

libavfilter/dnn/dnn_backend_native_layer_mathunary.c

@@ -143,6 +143,6 @@ int dnn_execute_layer_math_unary(DnnOperand *operands, const int32_t *input_oper
             dst[i] = round(src[i]);
         return 0;
     default:
-        return -1;
+        return DNN_ERROR;
     }
 }

libavfilter/dnn/dnn_backend_native_layer_pad.c

@@ -112,10 +112,10 @@ int dnn_execute_layer_pad(DnnOperand *operands, const int32_t *input_operand_ind
     output_operand->data_type = operands[input_operand_index].data_type;
     output_operand->length = calculate_operand_data_length(output_operand);
     if (output_operand->length <= 0)
-        return -1;
+        return DNN_ERROR;
     output_operand->data = av_realloc(output_operand->data, output_operand->length);
     if (!output_operand->data)
-        return -1;
+        return DNN_ERROR;
     output = output_operand->data;
 
     // copy the original data