gstreamer/gst/gstlibs.override

/* -*- Mode: C; ; c-basic-offset: 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: Johan Dahlin <johan@gnome.org>
 */
%%
ignore
  gst_controller_new
  gst_controller_*_valist
  gst_controller_remove_properties_list

%%
override gst_controller_set args
static PyObject *
_wrap_gst_controller_set (PyGObject *self, PyObject *args)
{
  GstController	*controller = (GstController *) self->obj;
  gchar		*param_name;
  GstClockTime	timestamp;
  GValue	value = { 0, };
  PyObject	*pvalue;
  GType		type = 0;
  GList		*tmp;
  gboolean	res;

  if (!PyArg_ParseTuple(args, "sLO:GstController.set",
			&param_name, &timestamp, &pvalue))
    return NULL;

  /* We need to find the GType to convert to */
  for (tmp = controller->properties; tmp; tmp = g_list_next (tmp)) {
    GstControlledProperty	*prop = (GstControlledProperty *) tmp->data;
    if (!strcmp (prop->name, param_name))
      type = prop->type;
  }

  if (!type) {
    PyErr_SetString (PyExc_TypeError,
		     "The controller doesn't handle the given property");
    return NULL;
  }

  g_value_init (&value, type);

  if (pyg_value_from_pyobject (&value, pvalue)) {
    PyErr_SetString (PyExc_TypeError,
		     "Couldn't convert the given value to the good type");
    return NULL;
  }

  res = gst_controller_set (controller, param_name, timestamp, &value);
  if (res) {
    Py_INCREF (Py_True);
    return Py_True;
  }
  Py_INCREF (Py_False);
  return Py_False;
}
%%
override gst_controller_get kwargs
static PyObject *
_wrap_gst_controller_get (PyGObject *self, PyObject *args, PyObject *kwargs)
{
    GstController	*controller = (GstController *) self->obj;
    static char		*kwlist[] = { "propertyname", "timestamp", NULL };
    gchar	*propertyname;
    GstClockTime	timestamp;
    GValue	*value = NULL;
    PyObject	*pyvalue;

    if (!PyArg_ParseTupleAndKeywords (args, kwargs,
				      "sL:GstController.get",
				      kwlist, &propertyname, &timestamp))
	return NULL;

    value = gst_controller_get (controller, propertyname, timestamp);
    if (value) {
	pyvalue = pyg_value_as_pyobject (value, FALSE);
	return pyvalue;
    }
    Py_INCREF (Py_None);
    return Py_None;
}
%%
override gst_controller_new_list args
static int
_wrap_gst_controller_new_list(PyGObject *self, PyObject *args)
{
    PyGObject	*target;
    gint	len;
    GList	*list = NULL;

    if ((len = PyTuple_Size(args)) < 1) {
	PyErr_SetString(PyExc_TypeError, "Controller requires at least a target object");
	return -1;
    }
    target = (PyGObject *) PyTuple_GetItem(args, 0);
    if (len > 1)
	while (len-- > 1) {
	    PyObject	*temp;
	    gchar	*str;

	    temp = PyTuple_GetItem(args, len);
	    str = PyString_AsString(temp);
	    GST_INFO("prepending %s [%d]", str, len);
	    list = g_list_prepend(list, PyString_AsString(temp));
	}

    self->obj = (GObject *) gst_controller_new_list(target->obj, list);

    if (!self->obj) {
	PyErr_SetString(PyExc_RuntimeError, "could not create GstController object");
	return -1;
    }
    
    pygobject_register_wrapper((PyObject *) self);
    return 0;
}
%%
override gst_controller_remove_properties args
static PyObject *
_wrap_gst_controller_remove_properties (PyGObject *self, PyObject *args)
{
    GstController *controller = (GstController *) self->obj;
    gint	len;
    GList	*list = NULL;
    gboolean	res = FALSE;
    PyObject	*pret;

    if ((len = PyTuple_Size(args)) < 1) {
	PyErr_SetString(PyExc_TypeError, "Please give at least one property name to remove");
	return NULL;
    }

    while (len--) {
	PyObject	*temp;
	gchar	*str;
	
	temp = PyTuple_GetItem(args, len);
	str = PyString_AsString(temp);
	GST_INFO("prepending %s [%d]", str, len);
	list = g_list_prepend(list, PyString_AsString(temp));
    }
    
    res = gst_controller_remove_properties_list(controller, list);

    if (res)
	pret = Py_True;
    else
	pret = Py_False;

    Py_INCREF (pret);

    return pret;
}
%%
override gst_controller_set_from_list args
static PyObject *
_wrap_gst_controller_set_from_list (PyGObject *self, PyObject *args)
{
    GstController *controller = (GstController *) self->obj;
    PyObject	*temp;
    gint	len;
    gchar	*pname;
    GSList	*list = NULL;
    GList	*props;
    gboolean	res = FALSE;
    GType	vtype = 0;
    PyObject	*pret;

    if ((len = PyTuple_Size(args)) < 2) {
	PyErr_SetString(PyExc_TypeError, "Please give a property name and a tuple of (time,value)");
	return NULL;
    }

    temp = PyTuple_GetItem(args, 0);
    if (!PyString_Check (temp)) {
	PyErr_SetString(PyExc_TypeError, "First argument must be a string");
	return NULL;
    }
    pname = PyString_AsString(temp);

    /* Get the GType of the given property */
    g_mutex_lock (controller->lock);
    for (props = controller->properties; props; props = g_list_next(props)) {
	GstControlledProperty	*prop = (GstControlledProperty *) props->data;

	if (!strcmp(prop->name, pname)) {
	    vtype = prop->type;
	    break;
	}
    }
    g_mutex_unlock (controller->lock);
    if (!vtype)
	goto error;

    while (len-- > 1) {
	PyObject	*temp2;
	GstTimedValue	*tval;
	
	temp2 = PyTuple_GetItem(args, len);
	if (!PyTuple_Check (temp2)) {
	    PyErr_SetString (PyExc_TypeError, "Tuple doesn't contain tuples !");
	    goto error;
	}
	tval = g_new0(GstTimedValue, 1);
	tval->timestamp = PyLong_AsUnsignedLongLong(PyTuple_GetItem(temp2, 0));
	g_value_init (&tval->value, vtype);
	if ((pyg_value_from_pyobject (&tval->value, PyTuple_GetItem (temp2, 1))) < 0) {
	    PyErr_SetString (PyExc_TypeError, "Couldn't convert value to correct type");
	    goto error;
	};

	list = g_slist_prepend(list, tval);
    }
    
    res = gst_controller_set_from_list(controller, pname, list);

    if (res)
	pret = Py_True;
    else
	pret = Py_False;

    Py_INCREF (pret);

    return pret;

 error:
    while (list) {
	g_free(list->data);
	list = g_slist_next(list);
    }
    g_slist_free (list);
    return NULL;
}