message: java: allow to wrap functions which take cv::Ptr
diff: @@ -649,6 +649,7 @@ public class $jname {
  protected final long nativeObj;
  protected $jname(long addr) { nativeObj = addr; }
  + public long getNativeObjAddr() { return nativeObj; }
  """
  T_JAVA_START_MODULE = """
  @@ -1004,7 +1005,7 @@ class JavaWrapperGenerator(object):
  classinfo.addImports(classinfo.base)
  type_dict["Ptr_"+name] = \
  { "j_type" : classinfo.jname,
  - "jn_type" : "long", "jn_args" : (("__int64", ".nativeObj"),),
  + "jn_type" : "long", "jn_args" : (("__int64", ".getNativeObjAddr()"),),
  "jni_name" : "*((Ptr<"+classinfo.fullName(isCPP=True)+">*)%(n)s_nativeObj)", "jni_type" : "jlong",
  "suffix" : "J" }
  logging.info('ok: class %s, name: %s, base: %s', classinfo, name, classinfo.base)
  @@ -1228,7 +1229,7 @@ class JavaWrapperGenerator(object):
  if "I" in a.out or not a.out or self.isWrapped(a.ctype): # input arg, pass by primitive fields
  for f in fields:
  jn_args.append ( ArgInfo([ f[0], a.name + f[1], "", [], "" ]) )
  - jni_args.append( ArgInfo([ f[0], a.name + f[1].replace(".","_").replace("[","").replace("]",""), "", [], "" ]) )
  + jni_args.append( ArgInfo([ f[0], a.name + f[1].replace(".","_").replace("[","").replace("]","").replace("_getNativeObjAddr()","_nativeObj"), "", [], "" ]) )
  if a.out and not self.isWrapped(a.ctype): # out arg, pass as double[]
  jn_args.append ( ArgInfo([ "double[]", "%s_out" % a.name, "", [], "" ]) )
  jni_args.append ( ArgInfo([ "double[]", "%s_out" % a.name, "", [], "" ]) )
  @@ -1276,7 +1277,7 @@ class JavaWrapperGenerator(object):
  " private static native $type $name($args);\n").substitute(\
  type = type_dict[fi.ctype].get("jn_type", "double[]"), \
  name = fi.jname + '_' + str(suffix_counter), \
  - args = ", ".join(["%s %s" % (type_dict[a.ctype]["jn_type"], a.name.replace(".","_").replace("[","").replace("]","")) for a in jn_args])
  + args = ", ".join(["%s %s" % (type_dict[a.ctype]["jn_type"], a.name.replace(".","_").replace("[","").replace("]","").replace("_getNativeObjAddr()","_nativeObj")) for a in jn_args])
  ) );
  # java part:
  