convert asymmetric pad parameter

tools/mxnet/mxnet2ncnn.cpp

@@ -2136,12 +2136,28 @@ int main(int argc, char** argv)
             }
 
             fprintf(pp, " 0=%d", pool);
-            if (!kernel.empty())
+
+            if (kernel.size() == 1) {
                 fprintf(pp, " 1=%d", kernel[0]);
-            if (!stride.empty())
+            } else if (kernel.size() == 2) {
+                fprintf(pp, " 1=%d", kernel[1]);
+                fprintf(pp, " 11=%d", kernel[0]);
+            }
+
+            if (stride.size() == 1) {
                 fprintf(pp, " 2=%d", stride[0]);
-            if (!pad.empty())
+            } else if (stride.size() == 2) {
+                fprintf(pp, " 2=%d", stride[1]);
+                fprintf(pp, " 12=%d", stride[0]);
+            }
+
+            if (pad.size() == 1) {
                 fprintf(pp, " 3=%d", pad[0]);
+            } else if (pad.size() == 2) {
+                fprintf(pp, " 3=%d", pad[1]);
+                fprintf(pp, " 13=%d", pad[0]);
+            }
+
             fprintf(pp, " 4=%d", global_pool);
             fprintf(pp, " 5=%d", pad_mode);
 

tools/onnx/onnx2ncnn.cpp

@@ -1429,7 +1429,8 @@ int main(int argc, char** argv)
             } else if (pads.size() == 4) {
                 fprintf(pp, " 4=%d", pads[1]);
                 fprintf(pp, " 14=%d", pads[0]);
-                // TODO hpad2=pads[2]   wpad2=pads[3]
+                fprintf(pp, " 15=%d", pads[3]);
+                fprintf(pp, " 16=%d", pads[2]);
             }
 
             }
@@ -1508,7 +1509,8 @@ int main(int argc, char** argv)
             } else if (pads.size() == 4) {
                 fprintf(pp, " 4=%d", pads[1]);
                 fprintf(pp, " 14=%d", pads[0]);
-                // TODO hpad2=pads[2]   wpad2=pads[3]
+                fprintf(pp, " 15=%d", pads[3]);
+                fprintf(pp, " 16=%d", pads[2]);
             }
 
             }