gstreamer/gst/gstbase.override

/* -*- Mode: C; ; c-basic-offset: 4 -*- */
/* gst-python
 * Copyright (C) 2006 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>
 */

%%
override GstBaseSrc__proxy_do_create
static GstFlowReturn
_wrap_GstBaseSrc__proxy_do_create (GstBaseSrc * self,
				   guint64 offset,
				   guint size,
				   GstBuffer ** buf)
{
  PyGILState_STATE __py_state;
  PyObject *py_self;
  GstFlowReturn retval = GST_FLOW_ERROR;
  PyObject *py_ret;
  PyObject *py_flow;
  PyObject *py_buffer;
  PyObject *py_args;
  PyObject *py_method;

    __py_state = pyg_gil_state_ensure();
    py_self = pygobject_new((GObject *) self);
    if (!py_self) {
        if (PyErr_Occurred())
            PyErr_Print();
	goto beach;
    }

    py_args = PyTuple_New(2);
    PyTuple_SET_ITEM(py_args, 0, PyLong_FromUnsignedLongLong(offset));
    PyTuple_SET_ITEM(py_args, 1, PyInt_FromLong(size));
    
    py_method = PyObject_GetAttrString(py_self, "do_create");

    if (!py_method) {
        if (PyErr_Occurred())
            PyErr_Print();
        Py_DECREF(py_args);
        Py_DECREF(py_self);
	goto beach;
    }

    py_ret = PyObject_CallObject(py_method, py_args);
    if (!py_ret) {
        if (PyErr_Occurred())
            PyErr_Print();
        Py_DECREF(py_method);
        Py_DECREF(py_args);
        Py_DECREF(py_self);
	goto beach;
    }
    
    /* process the python return value */
    /* Should be a list containing the gst.FlowReturn and the gst.Buffer */
    if (PyTuple_Check(py_ret)) {
      /* gst.FlowReturn */
      py_flow = PyTuple_GetItem(py_ret, 0);
      
      if (!py_flow) {
        if (PyErr_Occurred())
	  PyErr_Print();
	Py_DECREF(py_ret);
        Py_DECREF(py_method);
        Py_DECREF(py_args);
        Py_DECREF(py_self);
	goto beach;
      }
      
      if (py_flow == Py_None) {
	  GST_ERROR ("WHAT THE HEL????");
	  goto beach;
      }

      GST_DEBUG ("py_flow:%p", py_flow);

      if (pyg_enum_get_value(GST_TYPE_FLOW_RETURN, py_flow, (gint*) &retval)) {
        if (PyErr_Occurred())
            PyErr_Print();
	Py_DECREF(py_ret);
	Py_DECREF(py_flow);
        Py_DECREF(py_method);
        Py_DECREF(py_args);
        Py_DECREF(py_self);
	retval = GST_FLOW_ERROR;
	goto beach;
      }

      py_buffer = PyTuple_GetItem(py_ret, 1);
      if (!py_buffer) {
        if (PyErr_Occurred())
	  PyErr_Print();
	Py_DECREF(py_ret);
	Py_DECREF(py_method);
        Py_DECREF(py_args);
        Py_DECREF(py_self);
	goto beach;
      }
      
      if (pygstminiobject_check(py_buffer, &PyGstBuffer_Type)) {
	*buf = GST_BUFFER (pygstminiobject_get (py_buffer));
	gst_buffer_ref (*buf);
      } else {
	*buf = NULL;
      }
    }
    
    Py_DECREF(py_ret);
    Py_DECREF(py_method);
    Py_DECREF(py_args);
    Py_DECREF(py_self);

 beach:
    pyg_gil_state_release(__py_state);
    
    return retval;
}
%%
override GstBaseSrc__do_create kwargs
static PyObject *
_wrap_GstBaseSrc__do_create (PyObject *cls, PyObject *args, PyObject *kwargs)
{
    gpointer klass;
    static char *kwlist[] = { "self", "offset", "size", NULL };
    PyGObject *self;
    guint64 offset;
    guint size;
    PyObject *py_ret;
    GstFlowReturn flow;
    GstBuffer *buffer = NULL;

    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O!KI:GstBaseSrc.create",
				     kwlist, &PyGstBaseSrc_Type, &self, &offset, &size))
        return NULL;

    klass = g_type_class_ref(pyg_type_from_object(cls));
    if (GST_BASE_SRC_CLASS(klass)->create)
      flow = GST_BASE_SRC_CLASS(klass)->create(GST_BASE_SRC(self->obj), offset, size, &buffer);
    else {
      PyErr_SetString(PyExc_NotImplementedError, "virtual method GstBaseSrc.set_caps not implemented");
      g_type_class_unref(klass);
      return NULL;
    }
    g_type_class_unref(klass);

    /* We now need to return a tuple with (flow, buffer) */
    if (buffer)
      py_ret = PyTuple_New(2);
    else
      py_ret = PyTuple_New(1);

    PyTuple_SET_ITEM(py_ret, 0, pyg_enum_from_gtype(GST_TYPE_FLOW_RETURN, flow));

    if (buffer)
      PyTuple_SET_ITEM(py_ret, 1, pygstminiobject_new(GST_MINI_OBJECT (buffer)));

    return py_ret;
}
%%
override GstBaseSrc__proxy_do_get_size
static gboolean
_wrap_GstBaseSrc__proxy_do_get_size (GstBaseSrc * self,
				     guint64 * size)
{
  PyGILState_STATE __py_state;
  PyObject *py_self;
  gboolean ret = FALSE;
  PyObject *py_method;
  PyObject *py_ret;

    __py_state = pyg_gil_state_ensure();
    py_self = pygobject_new((GObject *) self);
    if (!py_self) {
        if (PyErr_Occurred())
            PyErr_Print();
	goto beach;
    }
    
    py_method = PyObject_GetAttrString(py_self, "do_get_size");

    if (!py_method) {
        if (PyErr_Occurred())
            PyErr_Print();
        Py_DECREF(py_self);
	goto beach;
    }

    py_ret = PyObject_CallObject(py_method, NULL);
    if (!py_ret) {
        if (PyErr_Occurred())
            PyErr_Print();
        Py_DECREF(py_method);
        Py_DECREF(py_self);
	goto beach;
    }

    /*
      If the method returned a numeric, the return value will be TRUE.
      For ANY other case, we don't set size and the return value is FALSE.
    */

    if (PyLong_Check(py_ret)) {
	*size = PyLong_AsUnsignedLongLongMask(py_ret);
	ret = TRUE;
    }

    Py_DECREF(py_method);
    Py_DECREF(py_self);
    Py_DECREF(py_ret);

 beach:
    pyg_gil_state_release(__py_state);
    
    return ret;
}
%%
override GstBaseSrc__do_get_size kwargs
static PyObject *
_wrap_GstBaseSrc__do_get_size (PyObject *cls, PyObject *args, PyObject *kwargs)
{
    gpointer klass;
    static char *kwlist[] = { "self", NULL };
    PyGObject *self;
    gboolean ret;
    guint64 size = 0;
    PyObject *py_ret;
    
    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O!:GstBaseSrc.get_size",
				     kwlist, &PyGstBaseSrc_Type, &self))
	return NULL;
    klass = g_type_class_ref(pyg_type_from_object(cls));
    if (GST_BASE_SRC_CLASS(klass)->get_size)
      ret = GST_BASE_SRC_CLASS(klass)->get_size(GST_BASE_SRC(self->obj), &size);
    else {
      PyErr_SetString(PyExc_NotImplementedError, "virtual method GstBaseSrc.get_size not implemented");
      g_type_class_unref(klass);
      return NULL;
    }
    g_type_class_unref(klass);
    
    py_ret = PyLong_FromUnsignedLongLong(size);

    return py_ret;
}