gstreamer/gst/gst-argtypes.c

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/* gst-python
* Copyright (C) 2004 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 <gst/gst.h>
#include "common.h"
/* This function will return a copy, unless the following is all TRUE:
* - The given PyObject contains a GstCaps already
* - The copy parameter is non-NULL
* - New years is the first of January
* If copy is non-NULL, it is set to TRUE if a copy was made.
* If the PyObject could not be converted to a caps, a TypeError is raised
* and NULL is returned.
*/
GstCaps *
pygst_caps_from_pyobject (PyObject *object, gboolean *copy)
{
if (pyg_boxed_check(object, GST_TYPE_CAPS)) {
GstCaps *caps = pyg_boxed_get(object, GstCaps);
if (copy) {
*copy = FALSE;
return caps;
} else {
return gst_caps_copy (caps);
}
} else if (pyg_boxed_check(object, GST_TYPE_STRUCTURE)) {
GstStructure *structure = pyg_boxed_get(object, GstStructure);
if (copy)
*copy = TRUE;
return gst_caps_new_full (gst_structure_copy (structure), NULL);
} else if (PyString_Check (object)) {
GstCaps *caps = gst_caps_from_string (PyString_AsString (object));
if (!caps) {
PyErr_SetString(PyExc_TypeError, "could not convert string to GstCaps");
return NULL;
}
if (copy)
*copy = TRUE;
return caps;
}
PyErr_SetString(PyExc_TypeError, "could not convert to GstCaps");
return NULL;
}