Add CV\Mat->clone() and fix medianBlur

Author: hihozhou

source/opencv2/core/opencv_mat.cc

@@ -444,6 +444,7 @@ const zend_function_entry opencv_mat_methods[] = {
         PHP_ME(opencv_mat, empty, NULL, ZEND_ACC_PUBLIC)
         PHP_ME(opencv_mat, print, NULL, ZEND_ACC_PUBLIC)
         PHP_ME(opencv_mat, size, NULL, ZEND_ACC_PUBLIC)
+        PHP_ME(opencv_mat, clone, NULL, ZEND_ACC_PUBLIC)
         PHP_ME(opencv_mat, zeros, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
         PHP_MALIAS(opencv_mat, zerosBySize ,zeros_by_size, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
         PHP_MALIAS(opencv_mat, isContinuous ,is_continuous, NULL, ZEND_ACC_PUBLIC)

source/opencv2/opencv_imgproc.cc

@@ -446,7 +446,7 @@ PHP_FUNCTION(opencv_bilateral_filter){
     double sigma_color, sigma_space;
     opencv_mat_object *dst_object;
 
-    if (zend_parse_parameters(ZEND_NUM_ARGS(), "Ozlddl",
+    if (zend_parse_parameters(ZEND_NUM_ARGS(), "Ozldd|l",
                               &src_zval, opencv_mat_ce,
                               &dst_zval, &d, &sigma_color,
                               &sigma_space, &border_type) == FAILURE) {
@@ -467,7 +467,7 @@ PHP_FUNCTION(opencv_bilateral_filter){
         dst_object = Z_PHP_MAT_OBJ_P(dst_real_zval);
         dst_object->mat = new Mat(dst);
     }
-    bilateralFilter(*src_object->mat, *dst_object->mat, (int)d, sigma_color, sigma_space, border_type);
+    bilateralFilter(*src_object->mat, *dst_object->mat, (int)d, sigma_color, sigma_space, (int)border_type);
     RETURN_NULL();
 }