gstreamer/gst/gstbus.override
Thomas Vander Stichele 5768672390 gst/: add/move some code to handle wrapping/refcounting of possible
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
2005-09-28 12:17:29 +00:00

220 lines
6.2 KiB
C

/* -*- Mode: C; c-basic-offset: 4 -*-
* vi:si:et:sw=4:sts=4:ts=4
*
* gst-python
* Copyright (C) 2005 Edward Hervey
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Edward Hervey <edward@fluendo.com>
*/
%%
headers
static GstBusSyncReply
bus_sync_handler (GstBus *bus, GstMessage *message, gpointer user_data)
{
PyGILState_STATE state;
GstBusSyncReply res;
PyObject *py_userdata;
PyObject *py_msg;
PyObject *callback, *args;
PyObject *ret;
gint i, len;
g_return_val_if_fail (user_data != NULL, GST_BUS_PASS);
state = pyg_gil_state_ensure ();
py_userdata = (PyObject *) user_data;
py_msg = pygstminiobject_new (GST_MINI_OBJECT (message));
callback = PyTuple_GetItem (py_userdata, 0);
/* Using N we give away our references to the args tuple */
args = Py_BuildValue ("(NN)",
pygstobject_new (G_OBJECT (bus)),
py_msg);
/* add all *args to the args tuple object */
len = PyTuple_Size (py_userdata);
for (i = 1; i < len; ++i) {
PyObject *tuple = args;
args = PySequence_Concat (tuple, PyTuple_GetItem (py_userdata, i));
Py_DECREF (tuple);
}
ret = PyObject_CallObject (callback, args);
if (!ret) {
PyErr_Print ();
res = GST_BUS_PASS;
} else {
if (ret == Py_None) {
PyErr_SetString (PyExc_TypeError,
"callback should return a BusSyncReply");
PyErr_Print ();
res = GST_BUS_PASS;
} else if (pyg_enum_get_value (GST_TYPE_BUS_SYNC_REPLY, ret,
(gint *) &res))
res = GST_BUS_PASS;
Py_DECREF (ret);
}
Py_DECREF (args);
pyg_gil_state_release (state);
return res;
}
static gboolean
bus_func (GstBus *bus, GstMessage *message, gpointer user_data)
{
PyGILState_STATE state;
gboolean res;
PyObject *py_userdata;
PyObject *py_msg;
PyObject *callback, *args;
PyObject *ret;
gint i, len;
g_return_val_if_fail (user_data != NULL, TRUE);
GST_DEBUG_OBJECT (bus, "dispatching message %p", message);
state = pyg_gil_state_ensure ();
py_userdata = (PyObject *) user_data;
g_assert (PyTuple_Check (py_userdata));
py_msg = pygstminiobject_new (GST_MINI_OBJECT (message));
callback = PyTuple_GetItem (py_userdata, 0);
/* Using N we give away our references to the args tuple */
args = Py_BuildValue ("(NN)",
pygstobject_new (G_OBJECT (bus)),
py_msg);
g_assert (args);
/* add all *args to the args tuple object */
len = PyTuple_Size (py_userdata);
for (i = 1; i < len; ++i) {
PyObject *item;
PyObject *tuple = args;
item = PyTuple_GetItem (py_userdata, i);
g_assert (item);
args = PySequence_Concat (tuple, item);
g_assert (args);
Py_DECREF (tuple);
}
ret = PyObject_CallObject(callback, args);
if (!ret) {
PyErr_Print ();
res = TRUE;
} else {
if (ret == Py_None) {
PyErr_SetString (PyExc_TypeError,
"callback should return True or False");
PyErr_Print ();
res = TRUE;
} else
res = PyObject_IsTrue (ret);
Py_DECREF (ret);
}
Py_DECREF (args);
pyg_gil_state_release (state);
GST_DEBUG_OBJECT (bus, "dispatched message %p", message);
return res;
}
%%
override gst_bus_set_sync_handler args
static PyObject *
_wrap_gst_bus_set_sync_handler (PyGObject *self, PyObject *args)
{
PyObject *callback, *cbargs = NULL, *data;
gint len;
len = PyTuple_Size(args);
if (len < 1) {
PyErr_SetString(PyExc_TypeError, "Bus requires at least 1 arg");
return NULL;
}
callback = PySequence_GetItem(args, 0);
if (!PyCallable_Check(callback)) {
PyErr_SetString(PyExc_TypeError, "callback is not callable");
return NULL;
}
cbargs = PySequence_GetSlice(args, 1, len);
if (cbargs == NULL)
return NULL;
data = Py_BuildValue("(ON)", callback, cbargs);
if (data == NULL)
return NULL;
gst_bus_set_sync_handler (GST_BUS (self->obj),
(GstBusSyncHandler) bus_sync_handler,
data);
return (PyObject*) self;
}
%%
override gst_bus_add_watch args
static PyObject *
_wrap_gst_bus_add_watch (PyGObject *self, PyObject *args)
{
PyObject *callback, *py_events, *cbargs = NULL, *data;
guint sigid;
guint len;
GstMessageType events;
len = PyTuple_Size(args);
if (len < 2) {
PyErr_SetString(PyExc_TypeError, "Bus.add_watch requires at least 2 args");
return NULL;
}
py_events = PySequence_GetItem(args, 0);
if (pyg_flags_get_value (GST_TYPE_MESSAGE_TYPE, py_events,
(gint *)&events)) {
PyErr_SetString(PyExc_TypeError,
"message type is not a GST_TYPE_MESSAGE_TYPE");
return NULL;
}
callback = PySequence_GetItem(args, 1);
if (!PyCallable_Check(callback)) {
PyErr_SetString(PyExc_TypeError, "callback is not callable");
return NULL;
}
cbargs = PySequence_GetSlice(args, 2, len);
if (cbargs == NULL)
return NULL;
/* FIXME: thomas: I'm pretty sure the second N needs to be O */
data = Py_BuildValue("(ON)", callback, cbargs);
if (data == NULL)
return NULL;
sigid = gst_bus_add_watch (GST_BUS (self->obj), events,
(GstBusFunc) bus_func, data);
return PyInt_FromLong(sigid);
}