It appears I completely misunderstood the --add-init-section option of
g-ir-scanner. It's only relevant for the creation of the introspection
data. It's not a code section which gets called whenever the respective
gobject language bindings (in your case pygobject) load a typelib. So in
any case you have to call Gst.init() which you may or may not be doing
anyway.
2013/2/1 Niklas Koep niklas.k...@gmail.com
I think a minimal program which reproduces the error would be helpful
here. What exact versions of gstreamer, pygobject (python2-gobject), etc.
are you using? In any case, calling Gst.ElementFactory.make with one
argument from an interactive session already raises a TypeError exception
for me as the method requires you to specify a unique name, as well as the
element type. I guess default arguments aren't supported by pygobject yet
which means you have to pass both 'xvimagesink' and None to the method for
gstreamer to create a name for the element by itself.
Also, do you call Gst.init() before making any other gstreamer calls? I
was under the impression this was called upon importing the module, but for
some reason the interpreter complains about it if you don't explicitly call
it. Weirdly enough according to the gstreamer-1.0 source g-ir-scanner is
called with --add-init-section=gst_init(NULL, NULL);.
Regards, Niklas
2013/1/31 laguillaumie sylvain s.la...@free.fr
hi list(s)
i try to port my app to gtk3/gst1.0 but have some errors i dont
understand i can post my code if needed but does someone have an idear on
the followings errors...
i post in pygtk and gst list but i have this crash since i used :
self.player.videosink = Gst.ElementFactory.make('**xvimagesink')
/usr/lib/python2.7/dist-**packages/gi/types.py:47: Warning: cannot
register existing type `GstObject'
return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-**packages/gi/types.py:47: Warning:
g_once_init_leave: assertion `result != 0' failed
return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-**packages/gi/types.py:47: Warning:
g_type_register_static: assertion `parent_type 0' failed
return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-**packages/gi/types.py:47: Warning: interface
type `GstImplementsInterface' or prerequisite type `invalid' invalid
return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-**packages/gi/types.py:47: Warning: cannot add
interface type `GstColorBalance' to type `GstPlayBin' which does not
conform to prerequisite `GstImplementsInterface'
return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-**packages/gi/types.py:47: Warning: cannot add
interface type `GstColorBalance' to type `GstPlaySink' which does not
conform to prerequisite `GstImplementsInterface'
return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-**packages/gi/types.py:47: Warning:
/build/buildd/glib2.0-2.34.1/.**/gobject/gsignal.c:2459: signal
`value-changed' is invalid for instance `0x9f680a8'
return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-**packages/gi/module.py:152: Warning: cannot
register existing type `GstNavigation'
g_type = info.get_g_type()
/usr/lib/python2.7/dist-**packages/gi/module.py:156: Warning:
g_type_get_qdata: assertion `node != NULL' failed
type_ = g_type.pytype
/usr/lib/python2.7/dist-**packages/gi/types.py:240: Warning: cannot
register existing type `GstNavigation'
register_interface_info(cls.__**info__.get_g_type())
Traceback (most recent call last):
File /usr/lib/python2.7/dist-**packages/gi/types.py, line 243, in mro
return mro(cls)
File /usr/lib/python2.7/dist-**packages/gi/types.py, line 257, in mro
bases_of_subclasses += list(map(mro, C.__bases__)) +
[list(C.__bases__)]
File /usr/lib/python2.7/dist-**packages/gi/types.py, line 257, in mro
bases_of_subclasses += list(map(mro, C.__bases__)) +
[list(C.__bases__)]
File /usr/lib/python2.7/dist-**packages/gi/types.py, line 257, in mro
bases_of_subclasses += list(map(mro, C.__bases__)) +
[list(C.__bases__)]
File /usr/lib/python2.7/dist-**packages/gi/types.py, line 257, in mro
bases_of_subclasses += list(map(mro, C.__bases__)) +
[list(C.__bases__)]
File /usr/lib/python2.7/dist-**packages/gi/types.py, line 257, in mro
bases_of_subclasses += list(map(mro, C.__bases__)) +
[list(C.__bases__)]
File /usr/lib/python2.7/dist-**packages/gi/types.py, line 257, in mro
bases_of_subclasses += list(map(mro, C.__bases__)) +
[list(C.__bases__)]
File /usr/lib/python2.7/dist-**packages/gi/types.py, line 262, in mro
not_head = [s for s in bases_of_subclasses if candidate in s[1:]]
File /usr/lib/python2.7/dist-**packages/gi/module.py, line 269, in
__getattr__
return getattr(self._introspection_**module, name)
File /usr/lib/python2.7/dist-**packages/gi/module.py, line 193, in
__getattr__
wrapper = metaclass(name, bases, dict_)
File /usr/lib/python2.7/dist-**packages/gi/types.py,
