arg-types: Map const GstMiniObject

Adds GstMiniObjectArg to be able to use GstMiniObject objects
and its const versions in functions

https://bugzilla.gnome.org/show_bug.cgi?id=617068

diff --git a/gst/arg-types.py b/gst/arg-types.py
index def42fc..06a457a 100644 (file)
--- a/gst/arg-types.py
+++ b/gst/arg-types.py
@@ -145,6 +145,45 @@ class GstIteratorArg(ArgType):
                info.varlist.add('GstIterator', '*ret')
                info.codeafter.append('    return pygst_iterator_new(ret);')
 
+class GstMiniObjectArg(ArgType):
+
+       before = ('    %(name)s = %(macro)s(pygstminiobject_get (py_%(name)s));\n'
+                 '    if (PyErr_Occurred())\n'
+                 '      return NULL;\n')
+
+       def write_param(self, ptype, pname, pdflt, pnull, keeprefcount, info):
+               if pdflt:
+                       assert pdflt == 'NULL'
+                       info.varlist.add('PyObject', '*py_' + pname + ' = NULL')
+               else:
+                       info.varlist.add('PyObject', '*py_' + pname)
+
+               #Converts 'GstBuffer*' to 'GstBuffer'
+               #and const-GstBuffer* to 'const GstBuffer'
+               info.varlist.add(ptype.replace('-',' ').replace('*',''), '*'+pname)
+
+               if ptype in ['GstBuffer*', 'const-GstBuffer*']:
+                       info.codebefore.append(self.before % { 'name' : pname, 'macro' : 'GST_BUFFER' })
+
+               elif ptype in ['GstMessage*', 'const-GstMessage*']:
+                       info.codebefore.append(self.before % { 'name' : pname, 'macro' : 'GST_MESSAGE' })
+
+               elif ptype in ['GstEvent*', 'const-GstEvent*']:
+                       info.codebefore.append(self.before % { 'name' : pname, 'macro' : 'GST_EVENT' })
+
+               elif ptype in ['GstQuery*', 'const-GstQuery*']:
+                       info.codebefore.append(self.before % { 'name' : pname, 'macro' : 'GST_QUERY' })
+
+               else:
+                       raise RuntimeError, "write_param not implemented for %s" % ptype
+                       
+               info.add_parselist('O', ['&py_'+pname], [pname])
+               info.arglist.append(pname)
+
+       def write_return(self, ptype, ownsreturn, info):
+               info.varlist.add('GstMiniObject', '*ret')
+               info.codeafter.append('    return pygstminiobject_new((GstMiniObject *) ret);')
+
 class GstMiniObjectParam(Parameter):
 
        def get_c_type(self):
@@ -352,7 +391,8 @@ for typename in ["GstPlugin", "GstStructure", "GstTagList", "GError", "GstDate",
        matcher.register_reverse(typename, GBoxedParam)
        matcher.register_reverse_ret(typename, GBoxedReturn)
 
-for typename in ["GstBuffer*", "GstEvent*", "GstMessage*", "GstQuery*"]:
+for typename in ["GstBuffer*", "const-GstBuffer*", "GstEvent*", "const-GstEvent*", "GstMessage*", "const-GstMessage*", "GstQuery*", "const-GstQuery*"]:
+       matcher.register(typename, GstMiniObjectArg())
        matcher.register_reverse(typename, GstMiniObjectParam)
        matcher.register_reverse_ret(typename, GstMiniObjectReturn)