gstreamer/gi/overrides/gstmodule.c

/* -*- Mode: C; ; c-file-style: "k&r"; c-basic-offset: 4 -*- */
/* gst-python
 * Copyright (C) 2002 David I. Lehn
 *
 * 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: David I. Lehn <dlehn@users.sourceforge.net>
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

/* include this first, before NO_IMPORT_PYGOBJECT is defined */
#include <Python.h>
#include <pygobject.h>
#include <gst/gst.h>

#include <locale.h>

#define PYGLIB_MODULE_START(symbol, modname)	        \
DL_EXPORT(void) init##symbol(void)			\
{                                                       \
    PyObject *module;                                   \
    module = Py_InitModule(modname, symbol##_functions);
#define PYGLIB_MODULE_END }

static PyObject *
gi_gst_fraction_from_value (const GValue * value)
{
  PyObject *module, *dict, *fraction_type, *args, *fraction;
  gint numerator, denominator;

  numerator = gst_value_get_fraction_numerator (value);
  denominator = gst_value_get_fraction_denominator (value);

  module = PyImport_ImportModule ("gi.repository.Gst");
  dict = PyModule_GetDict (module);
  /* For some reson we need this intermediary step */
  module = PyMapping_GetItemString (dict, "_overrides_module");
  dict = PyModule_GetDict (module);
  fraction_type = PyMapping_GetItemString (dict, "Fraction");

  args = Py_BuildValue ("(ii)", numerator, denominator);
  fraction = PyObject_Call (fraction_type, args, NULL);
  Py_DECREF (args);
  Py_DECREF (fraction_type);
  Py_DECREF (module);

  return fraction;
}

static int
gi_gst_fraction_to_value (GValue * value, PyObject * object)
{
  PyObject *numerator, *denominator;

  numerator = PyObject_GetAttrString (object, "num");
  if (numerator == NULL)
    goto fail;

  denominator = PyObject_GetAttrString (object, "denom");
  if (denominator == NULL)
    goto fail;

  gst_value_set_fraction (value,
      PyLong_AsLong (numerator), PyLong_AsLong (denominator));

  return 0;

fail:
  return -1;
}

void
gi_gst_register_types (PyObject * d)
{
  pyg_register_gtype_custom (GST_TYPE_FRACTION,
      gi_gst_fraction_from_value, gi_gst_fraction_to_value);
}

static PyMethodDef _gi_gst_functions[] = { {0,} };

PYGLIB_MODULE_START (_gi_gst, "_gi_gst")
{
  PyObject *d;

  pygobject_init (3, 0, 0);

  d = PyModule_GetDict (module);
  gi_gst_register_types (d);

}

PYGLIB_MODULE_END;