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/* -*- Mode: C; c-basic-offset: 4 -*- */
/* gst-python
* Copyright (C) 2005 Johan Dahlin
*
* 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: Johan Dahlin <johan@gnome.org>
*/
/* define this for all source files that don't run init_pygobject()
* before including pygobject.h */
#define NO_IMPORT_PYGOBJECT
#include "pygst-private.h"
static void
pygst_iterator_dealloc (PyGstIterator * self)
{
gst_iterator_free (self->iter);
PyObject_Del ((PyObject *) self);
}
static PyObject *
pygst_iterator_iter_next (PyGstIterator * self)
{
gpointer element;
PyObject *retval = NULL;
GstIteratorResult result;
result = gst_iterator_next (self->iter, &element);
switch (result) {
case GST_ITERATOR_DONE:
PyErr_SetNone (PyExc_StopIteration);
break;
case GST_ITERATOR_OK:
if (g_type_is_a (self->iter->type, G_TYPE_OBJECT)) {
retval = pygobject_new (G_OBJECT (element));
g_object_unref (element);
} else if (g_type_is_a (self->iter->type, GST_TYPE_MINI_OBJECT)) {
retval = pygstminiobject_new (GST_MINI_OBJECT (element));
gst_mini_object_unref (element);
} else {
const gchar *type_name;
type_name = g_type_name (self->iter->type);
PyErr_Format (PyExc_TypeError, "Unsupported child type: %s",
type_name ? type_name : "unknown");
}
break;
case GST_ITERATOR_RESYNC:
/* XXX: add/raise gst.IteratorResync */
PyErr_SetString (PyExc_TypeError, "Resync");
break;
case GST_ITERATOR_ERROR:
PyErr_SetString (PyExc_TypeError, "Error");
break;
default:
g_assert_not_reached ();
break;
}
return retval;
}
static PyObject *
pygst_iterator_next (PyGstIterator * self)
{
/* Be compatible with Pythons API rather than GStreamers */
return pygst_iterator_iter_next (self);
}
static PyObject *
pygst_iterator_push (PyGstIterator * self, PyObject * args)
{
PyGstIterator *other;
if (!PyArg_ParseTuple (args, "O!:push", &PyGstIterator_Type, &other))
return NULL;
gst_iterator_push (self->iter, other->iter);
Py_INCREF (Py_None);
return Py_None;
}
static PyObject *
pygst_iterator_resync (PyGstIterator * self)
{
gst_iterator_resync (self->iter);
Py_INCREF (Py_None);
return Py_None;
}
static PyMethodDef _PyGstIterator_methods[] = {
{"next", (PyCFunction) pygst_iterator_next, METH_NOARGS},
{"push", (PyCFunction) pygst_iterator_push, METH_VARARGS},
{"resync", (PyCFunction) pygst_iterator_resync, METH_NOARGS},
{NULL, NULL, 0}
};
PyTypeObject PyGstIterator_Type = {
PyObject_HEAD_INIT (NULL)
0, /* ob_size */
"gst.Iterator", /* tp_name */
sizeof (PyGstIterator), /* tp_basicsize */
0, /* tp_itemsize */
(destructor) pygst_iterator_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
"GstIterator wrapper", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc) pygst_iterator_iter_next, /* tp_iternext */
_PyGstIterator_methods, /* tp_methods */
};
PyObject *
pygst_iterator_new (GstIterator * iter)
{
PyGstIterator *self;
if (iter == NULL) {
PyErr_SetString (PyExc_TypeError, "Invalid GstIterator (NULL)");
return NULL;
}
self = PyObject_NEW (PyGstIterator, &PyGstIterator_Type);
self->iter = iter;
GST_DEBUG ("self:%p , iterator:%p, type:%lu",
self, self->iter, self->iter->type);
return (PyObject *) self;
}
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