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5768672390
Original commit message from CVS: * gst/Makefile.am: * gst/common.h: * gst/pygstobject.c: (pygstobject_sink), (pygstobject_new), (pygst_object_unref): * gst/pygstobject.h: * gst/gstmodule.c: (init_gst): add/move some code to handle wrapping/refcounting of possible GstObject * codegen/argtypes.py: * gst/gstbin.override: * gst/gstbus.override: * gst/gstelement.override: * gst/gstpad.override: * gst/interfaces.override: use this reffing code * gst/gst-types.defs: * gst/gst.override: add a __gstrefcount__ field to GstObject types add tp_traverse, tp_dealloc and tp_clear, so we handle refcounting properly related to garbage collection * testsuite/test_element.py: * testsuite/test_pad.py: add more tests, add some refcount checks
121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/* -*- Mode: C; ; c-file-style: "k&r"; c-basic-offset: 4 -*- */
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/* gst-python
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* Copyright (C) 2002 David I. Lehn
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: David I. Lehn <dlehn@users.sourceforge.net>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "pygstobject.h"
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#include <locale.h>
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/* include this first, before NO_IMPORT_PYGOBJECT is defined */
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#include <pygobject.h>
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#include <gst/gst.h>
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#include <gst/gstversion.h>
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/* we reuse the same string for our quark so we get the same qdata;
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* it might be worth it to use our own to shake out all instances
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* were GObject-only calls are being used where we should be using
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* gst_object_ */
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static const gchar *pygobject_wrapper_id = "PyGObject::wrapper";
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static GQuark pygobject_wrapper_key = 0;
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/* only use on GstObject */
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void
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pygstobject_sink(GObject *object)
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{
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g_assert (GST_IS_OBJECT (object));
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if (GST_OBJECT_IS_FLOATING(object)) {
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gst_object_ref(GST_OBJECT(object));
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gst_object_sink(GST_OBJECT(object));
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}
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}
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/* functions used by the code generator we can call on both
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* GstObject and non-GstObject GObjects
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*/
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/* to be called instead of pygobject_new */
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PyObject *
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pygstobject_new(GObject *obj)
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{
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PyGObject *self = NULL;
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if (!GST_IS_OBJECT (obj))
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return pygobject_new (obj);
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GST_DEBUG_OBJECT (obj, "wrapping GstObject");
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if (!pygobject_wrapper_key)
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pygobject_wrapper_key = g_quark_from_static_string(pygobject_wrapper_id);
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if (obj == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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/* we already have a wrapper for this object -- return it. */
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self = (PyGObject *)g_object_get_qdata(obj, pygobject_wrapper_key);
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if (self != NULL) {
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Py_INCREF(self);
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} else {
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/* create wrapper */
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PyTypeObject *tp = pygobject_lookup_class(G_OBJECT_TYPE(obj));
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/* need to bump type refcount if created with
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pygobject_new_with_interfaces(). fixes bug #141042 */
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if (tp->tp_flags & Py_TPFLAGS_HEAPTYPE)
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Py_INCREF(tp);
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self = PyObject_GC_New(PyGObject, tp);
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if (self == NULL)
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return NULL;
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pyg_begin_allow_threads;
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self->obj = gst_object_ref(obj);
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pyg_end_allow_threads;
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pygstobject_sink(self->obj);
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self->inst_dict = NULL;
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self->weakreflist = NULL;
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self->closures = NULL;
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/* save wrapper pointer so we can access it later */
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Py_INCREF(self);
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g_object_set_qdata_full(obj, pygobject_wrapper_key, self,
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pyg_destroy_notify);
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PyObject_GC_Track((PyObject *)self);
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}
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GST_DEBUG_OBJECT (obj, "wrapped GstObject as PyObject %p", self);
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return (PyObject *)self;
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}
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/* to be called instead of g_object_unref */
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void
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pygst_object_unref(GObject *obj)
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{
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if (GST_IS_OBJECT (obj)) {
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GST_DEBUG_OBJECT (obj, "unreffing GstObject");
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gst_object_unref (obj);
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} else
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g_object_unref (obj);
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}
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