gstreamer/gst/gstobject.override

/* -*- Mode: C -*- */
/* 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>
 */

%%
ignore
  gst_object_default_deep_notify
  gst_object_check_uniqueness
  gst_object_replace

%%
override-attr GstObject.__gstrefcount__

/* keep this attribute around even after 2.8 for compatibility reasons */
static PyObject *
_wrap_gst_object__get___gstrefcount__ (PyGObject * self, void *closure)
{
  return PyInt_FromLong (GST_OBJECT_REFCOUNT_VALUE (self->obj));
}

%%
override-slot GstObject.tp_repr
static PyObject *
_wrap_gst_object_tp_repr (PyObject * self)
{
  gchar *repr;
  PyObject *ret;
  GstObject *object = GST_OBJECT (pygobject_get (self));

  repr = g_strdup_printf ("<%s object (%s) at 0x%lx>",
      self->ob_type->tp_name,
      object ? (
        GST_OBJECT_NAME (object) ? GST_OBJECT_NAME (object) : "unnamed"
      ) : "(null)",
      (long) self);
  ret = PyString_FromString (repr);
  g_free (repr);
  return ret;
}

%%
override-slot GstObject.tp_str
static PyObject *
_wrap_gst_object_tp_str (PyObject * self)
{
  gchar *repr, *path;
  PyObject *ret;
  GstObject *object = GST_OBJECT (pygobject_get (self));

  pyg_begin_allow_threads;
  path = gst_object_get_path_string (object);
  pyg_end_allow_threads;

  repr = g_strdup_printf ("%s (%s)", path, self->ob_type->tp_name);
  ret = PyString_FromString (repr);
  g_free (repr);
  g_free (path);
  return ret;
}
%%
override gst_object_set_property args

/*
 * REMOVE THE FOLLOWING CODE, once pygobject has fixed the issue of not
 * releasing the GIL when calling g_object_set_property.
 * 
 * See bug #395048 : set_property() doesn't release the GIL
 **/

static gboolean
set_property_from_pspec(GObject *obj,
			char *attr_name,
			GParamSpec *pspec,
			PyObject *pvalue)
{
    GValue value = { 0, };

    if (pspec->flags & G_PARAM_CONSTRUCT_ONLY) {
	PyErr_Format(PyExc_TypeError,
		     "property '%s' can only be set in constructor",
		     attr_name);
	return FALSE;
    }	

    if (!(pspec->flags & G_PARAM_WRITABLE)) {
	PyErr_Format(PyExc_TypeError,
		     "property '%s' is not writable", attr_name);
	return FALSE;
    }	

    g_value_init(&value, G_PARAM_SPEC_VALUE_TYPE(pspec));
/* FIXME: bug in pygtk 2.8 series; see
http://svn.gnome.org/viewcvs/pygobject/trunk/gobject/pygobject.h?rev=566&r1=564&r2=566 */

#ifndef PYGOBJECT_2_12
#undef pyg_param_gvalue_from_pyobject
#define pyg_param_gvalue_from_pyobject (_PyGObject_API->gvalue_from_param_pyobject)
#endif

    if (pyg_param_gvalue_from_pyobject(&value, pvalue, pspec) < 0) {
	PyErr_SetString(PyExc_TypeError,
			"could not convert argument to correct param type");
	return FALSE;
    }

    pyg_begin_allow_threads;
    g_object_set_property(obj, attr_name, &value);
    pyg_end_allow_threads;

    g_value_unset(&value);
    
    return TRUE;
}

static PyObject *
_wrap_gst_object_set_property(PyGObject *self, PyObject *args)
{
    gchar *param_name;
    GParamSpec *pspec;
    PyObject *pvalue;

    if (!PyArg_ParseTuple(args, "sO:gst.Object.set_property", &param_name,
			  &pvalue))
      return NULL;
    
    if (!GST_IS_OBJECT (self->obj)) {
      PyErr_Format (PyExc_TypeError,
		    "object at %p of type %s is not initialized",
		    self, self->ob_type->tp_name);
      return NULL;
    }
    
    pspec = g_object_class_find_property(G_OBJECT_GET_CLASS(self->obj),
					 param_name);
    if (!pspec) {
	PyErr_Format(PyExc_TypeError,
		     "object of type `%s' does not have property `%s'",
		     g_type_name(G_OBJECT_TYPE(self->obj)), param_name);
	return NULL;
    }
    
    if (!set_property_from_pspec(self->obj, param_name, pspec, pvalue))
	return NULL;
    
    Py_INCREF(Py_None);
    return Py_None;
}