mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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272 lines
7.4 KiB
C
272 lines
7.4 KiB
C
/* -*- Mode: C; c-basic-offset: 4 -*-
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* vi:si:et:sw=4:sts=4:ts=4
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*
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* gst-python
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* Copyright (C) 2005 Edward Hervey
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Edward Hervey <edward@fluendo.com>
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*/
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%%
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ignore
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gst_bus_create_watch
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gst_bus_sync_signal_handler
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gst_bus_async_signal_func
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%%
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headers
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static GstBusSyncReply
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bus_sync_handler (GstBus *bus, GstMessage *message, gpointer user_data)
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{
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PyGILState_STATE state;
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GstBusSyncReply res;
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PyObject *py_userdata;
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PyObject *py_msg;
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PyObject *callback, *args;
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PyObject *ret;
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gint i, len;
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g_return_val_if_fail (user_data != NULL, GST_BUS_PASS);
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state = pyg_gil_state_ensure ();
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py_userdata = (PyObject *) user_data;
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py_msg = pygstminiobject_new (GST_MINI_OBJECT (message));
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callback = PyTuple_GetItem (py_userdata, 0);
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/* Using N we give away our references to the args tuple */
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args = Py_BuildValue ("(NN)",
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pygobject_new (G_OBJECT (bus)),
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py_msg);
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/* add all *args to the args tuple object */
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len = PyTuple_Size (py_userdata);
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for (i = 1; i < len; ++i) {
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PyObject *tuple = args;
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args = PySequence_Concat (tuple, PyTuple_GetItem (py_userdata, i));
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Py_DECREF (tuple);
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}
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ret = PyObject_CallObject (callback, args);
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if (!ret) {
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PyErr_Print ();
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res = GST_BUS_PASS;
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} else {
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if (ret == Py_None) {
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PyErr_SetString (PyExc_TypeError,
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"callback should return a BusSyncReply");
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PyErr_Print ();
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res = GST_BUS_PASS;
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} else if (pyg_enum_get_value (GST_TYPE_BUS_SYNC_REPLY, ret,
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(gint *) &res))
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res = GST_BUS_PASS;
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Py_DECREF (ret);
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}
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Py_DECREF (args);
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pyg_gil_state_release (state);
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return res;
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}
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static gboolean
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bus_func (GstBus *bus, GstMessage *message, gpointer user_data)
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{
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PyGILState_STATE state;
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gboolean res;
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PyObject *py_userdata;
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PyObject *py_msg;
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PyObject *callback, *args;
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PyObject *ret;
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gint i, len;
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g_return_val_if_fail (user_data != NULL, TRUE);
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GST_DEBUG_OBJECT (bus, "dispatching message %p", message);
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state = pyg_gil_state_ensure ();
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py_userdata = (PyObject *) user_data;
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g_assert (PyTuple_Check (py_userdata));
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py_msg = pygstminiobject_new (GST_MINI_OBJECT (message));
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callback = PyTuple_GetItem (py_userdata, 0);
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/* Using N we give away our references to the args tuple */
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args = Py_BuildValue ("(NN)",
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pygobject_new (G_OBJECT (bus)),
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py_msg);
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g_assert (args);
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/* add all *args to the args tuple object */
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len = PyTuple_Size (py_userdata);
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for (i = 1; i < len; ++i) {
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PyObject *item;
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PyObject *tuple = args;
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item = PyTuple_GetItem (py_userdata, i);
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g_assert (item);
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args = PySequence_Concat (tuple, item);
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g_assert (args);
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Py_DECREF (tuple);
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}
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ret = PyObject_CallObject(callback, args);
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if (!ret) {
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PyErr_Print ();
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res = TRUE;
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} else {
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if (ret == Py_None) {
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PyErr_SetString (PyExc_TypeError,
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"callback should return True or False");
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PyErr_Print ();
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res = TRUE;
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} else
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res = PyObject_IsTrue (ret);
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Py_DECREF (ret);
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}
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Py_DECREF (args);
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pyg_gil_state_release (state);
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GST_DEBUG_OBJECT (bus, "dispatched message %p", message);
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return res;
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}
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%%
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override gst_bus_set_sync_handler args
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static PyObject *
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_wrap_gst_bus_set_sync_handler (PyGObject *self, PyObject *args)
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{
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PyObject *callback = NULL;
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PyObject *cbargs = NULL;
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PyObject *data = NULL;
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PyObject *old_data = NULL;
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gint len;
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static GQuark sync_handler_data_quark = 0;
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len = PyTuple_Size(args);
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if (len < 1) {
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PyErr_SetString(PyExc_TypeError, "Bus requires at least 1 arg");
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return NULL;
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}
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if (sync_handler_data_quark == 0)
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sync_handler_data_quark = \
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g_quark_from_static_string("PyGst::BusSyncHandlerData");
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callback = PySequence_GetItem(args, 0);
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if (callback != Py_None) {
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if (!PyCallable_Check(callback)) {
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Py_DECREF (callback);
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PyErr_SetString(PyExc_TypeError, "callback is not callable");
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return NULL;
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}
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cbargs = PySequence_GetSlice(args, 1, len);
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if (cbargs == NULL) {
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Py_DECREF (callback);
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return NULL;
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}
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data = Py_BuildValue("(ON)", callback, cbargs);
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Py_DECREF (cbargs);
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if (data == NULL) {
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Py_DECREF (callback);
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return NULL;
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}
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old_data = g_object_get_qdata (self->obj, sync_handler_data_quark);
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if (old_data != NULL) {
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Py_DECREF (old_data);
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}
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g_object_set_qdata (self->obj, sync_handler_data_quark, data);
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gst_bus_set_sync_handler (GST_BUS (self->obj),
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(GstBusSyncHandler) bus_sync_handler,
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data);
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} else {
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old_data = g_object_get_qdata (self->obj, sync_handler_data_quark);
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if (old_data != NULL) {
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Py_DECREF (old_data);
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}
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g_object_set_qdata (self->obj, sync_handler_data_quark, NULL);
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gst_bus_set_sync_handler (GST_BUS (self->obj), NULL, NULL);
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}
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Py_DECREF (callback);
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Py_INCREF(Py_None);
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return Py_None;
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}
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%%
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override gst_bus_add_watch args
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static PyObject *
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_wrap_gst_bus_add_watch (PyGObject *self, PyObject *args)
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{
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PyObject *callback, *cbargs = NULL, *data;
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guint sigid;
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guint len;
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len = PyTuple_Size(args);
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if (len < 1) {
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PyErr_SetString(PyExc_TypeError, "Bus.add_watch requires at least 1 argument");
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return NULL;
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}
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callback = PySequence_GetItem(args, 0);
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if (!PyCallable_Check(callback)) {
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PyErr_SetString(PyExc_TypeError, "callback is not callable");
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return NULL;
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}
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cbargs = PySequence_GetSlice(args, 1, len);
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if (cbargs == NULL)
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return NULL;
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/* FIXME: thomas: I'm pretty sure the second N needs to be O */
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data = Py_BuildValue("(ON)", callback, cbargs);
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if (data == NULL)
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return NULL;
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sigid = gst_bus_add_watch_full (GST_BUS (self->obj), G_PRIORITY_DEFAULT,
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(GstBusFunc) bus_func, data, (GDestroyNotify)pyg_destroy_notify);
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return PyInt_FromLong(sigid);
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}
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%%
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override gst_bus_add_signal_watch kwargs
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static PyObject *
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_wrap_gst_bus_add_signal_watch(PyGObject *self, PyObject *args, PyObject *kwargs)
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{
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static char *kwlist[] = { "priority", NULL };
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int priority = G_PRIORITY_DEFAULT;
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if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i:GstBus.add_signal_watch", kwlist, &priority))
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return NULL;
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pyg_begin_allow_threads;
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gst_bus_add_signal_watch_full(GST_BUS(self->obj), priority);
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pyg_end_allow_threads;
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Py_INCREF(Py_None);
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return Py_None;
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}
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