codegen/argtypes.py: Add handling of 'keep-refcount' for GBoxed arguments.

Original commit message from CVS:
* codegen/argtypes.py:
Add handling of 'keep-refcount' for GBoxed arguments.
* gst/gst.defs:
Mark the appropriate 'gst_message_new_*' arguments when the method
takes the ownership of the passed gst.Structure/gst.TagList
* testsuite/test_message.py:
Test for creating messages that take a gst.Structure/gst.TagList as
argument and make sure they're properly created.
Fixes #556054

ChangeLog

@@ -1,3 +1,15 @@
+2008-12-06  Edward Hervey  <edward.hervey@collabora.co.uk>
+
+	* codegen/argtypes.py:
+	Add handling of 'keep-refcount' for GBoxed arguments.
+	* gst/gst.defs:
+	Mark the appropriate 'gst_message_new_*' arguments when the method
+	takes the ownership of the passed gst.Structure/gst.TagList
+	* testsuite/test_message.py:
+	Test for creating messages that take a gst.Structure/gst.TagList as
+	argument and make sure they're properly created.
+	Fixes #556054
+
 2008-12-06  Edward Hervey  <edward.hervey@collabora.co.uk>
 
 	* testsuite/Makefile.am:

codegen/argtypes.py

@@ -613,6 +613,7 @@ class BoxedArg(ArgType):
             '        PyErr_SetString(PyExc_TypeError, "%(name)s should be a %(typename)s or None");\n'
             '        return NULL;\n'
             '    }\n')
+    acopy = ('   %(name)s = g_boxed_copy(%(typecode)s, %(name)s);\n')
     def __init__(self, ptype, typecode):
         self.typename = ptype
         self.typecode = typecode
@@ -629,6 +630,10 @@ class BoxedArg(ArgType):
             info.codebefore.append(self.check % {'name':  pname,
                                                  'typename': self.typename,
                                                  'typecode': self.typecode})
+        if keeprefcount:
+            # We need to grab a copy of the GBoxed
+            info.codebefore.append(self.acopy % {'name': pname,
+                                                 'typecode': self.typecode})
         if ptype[-1] == '*':
             typename = ptype[:-1]
             if typename[:6] == 'const-': typename = typename[6:]

gst/gst.defs

@@ -3038,7 +3038,7 @@
   (caller-owns-return #t)
   (parameters
     '("GstObject*" "src")
-    '("GstTagList*" "tag_list")
+    '("GstTagList*" "tag_list" (keep-refcount))
   )
 )
 
@@ -3131,7 +3131,7 @@
   (caller-owns-return #t)
   (parameters
     '("GstObject*" "src")
-    '("GstStructure*" "structure")
+    '("GstStructure*" "structure" (keep-refcount))
   )
 )
 
@@ -3141,7 +3141,7 @@
   (caller-owns-return #t)
   (parameters
     '("GstObject*" "src")
-    '("GstStructure*" "structure")
+    '("GstStructure*" "structure" (keep-refcount))
   )
 )
 
@@ -3191,7 +3191,7 @@
   (parameters
     '("GstMessageType" "type")
     '("GstObject*" "src")
-    '("GstStructure*" "structure")
+    '("GstStructure*" "structure" (keep-refcount))
   )
 )
 

testsuite/test_message.py

@@ -55,5 +55,56 @@ class NewTest(TestCase):
         self.failUnless(self.got_message == True)
         self.gccollect()
 
+class TestCreateMessages(TestCase):
+
+    def setUp(self):
+        TestCase.setUp(self)
+        self.element = gst.Bin()
+
+    def tearDown(self):
+        del self.element
+
+    def testCustomMessage(self):
+        # create two custom messages using the same structure
+        s = gst.Structure("something")
+        assert s != None
+        e1 = gst.message_new_custom(gst.MESSAGE_APPLICATION, self.element, s)
+        assert e1
+        e2 = gst.message_new_custom(gst.MESSAGE_APPLICATION, self.element, s)
+        assert e2
+
+        # make sure the two structures are equal
+        self.assertEquals(e1.structure.to_string(),
+                          e2.structure.to_string())
+
+    def testTagMessage(self):
+        # Create a taglist
+        t = gst.TagList()
+        t['something'] = "else"
+        t['another'] = 42
+
+        # Create two messages using that same taglist
+        m1 = gst.message_new_tag(self.element, t)
+        assert m1
+        m2 = gst.message_new_tag(self.element, t)
+        assert m2
+
+        # make sure the two messages have the same taglist
+        t1 = m1.parse_tag()
+        assert t1
+        keys = t1.keys()
+        keys.sort()
+        self.assertEquals(keys, ['another', 'something'])
+        self.assertEquals(t1['something'], "else")
+        self.assertEquals(t1['another'], 42)
+        t2 = m2.parse_tag()
+        assert t2
+        keys = t2.keys()
+        keys.sort()
+        self.assertEquals(keys, ['another', 'something'])
+        self.assertEquals(t2['something'], "else")
+        self.assertEquals(t2['another'], 42)
+
+
 if __name__ == "__main__":
     unittest.main()