/* -*- 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 */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "pygstminiobject.h" #include /* include this first, before NO_IMPORT_PYGOBJECT is defined */ #include #include #include void pygst_register_classes (PyObject *d); void pygst_add_constants(PyObject *module, const gchar *strip_prefix); void _pygst_register_boxed_types(PyObject *moddict); extern PyMethodDef pygst_functions[]; extern GSList *mainloops; extern void _pygst_main_quit(void); extern PyObject *PyGstExc_LinkError; extern PyObject *PyGstExc_AddError; extern PyObject *PyGstExc_RemoveError; GST_DEBUG_CATEGORY (pygst_debug); /* for bindings code */ GST_DEBUG_CATEGORY (python_debug); /* for python code */ /* copied from pygtk to register GType */ #define REGISTER_TYPE(d, type, name) \ type.ob_type = &PyType_Type; \ type.tp_alloc = PyType_GenericAlloc; \ type.tp_new = PyType_GenericNew; \ if (PyType_Ready(&type)) \ return; \ PyDict_SetItemString(d, name, (PyObject *)&type); #define REGISTER_GTYPE(d, type, name, gtype) \ REGISTER_TYPE(d, type, name); \ PyDict_SetItemString(type.tp_dict, "__gtype__", \ o=pyg_type_wrapper_new(gtype)); \ Py_DECREF(o); /* This is a timeout that gets added to the mainloop to handle SIGINT (Ctrl-C) * Other signals get handled at some other point where transition from * C -> Python is being made. */ static gboolean python_do_pending_calls(gpointer data) { gboolean quit = FALSE; PyGILState_STATE state; if (PyOS_InterruptOccurred()) { state = pyg_gil_state_ensure(); PyErr_SetNone(PyExc_KeyboardInterrupt); pyg_gil_state_release(state); quit = TRUE; } if (quit && mainloops != NULL) _pygst_main_quit(); return TRUE; } static PyObject* pygstminiobject_from_gvalue(const GValue *value) { GstMiniObject *miniobj; if ((miniobj = gst_value_get_mini_object (value)) == NULL) return NULL; return pygstminiobject_new(miniobj); } static int pygstminiobject_to_gvalue(GValue *value, PyObject *obj) { PyGstMiniObject *self = (PyGstMiniObject*) obj; gst_value_set_mini_object(value, self->obj); return 0; } DL_EXPORT(void) init_gst (void) { PyObject *m, *d; PyObject *av, *tuple; int argc, i; char **argv; init_pygobject (); /* pull in arguments */ av = PySys_GetObject ("argv"); if (av != NULL) { argc = PyList_Size (av); argv = g_new (char *, argc); for (i = 0; i < argc; i++) argv[i] = g_strdup (PyString_AsString (PyList_GetItem (av, i))); } else { /* gst_init_check does not like argc == 0 */ argc = 1; argv = g_new (char *, argc); argv[0] = g_strdup(""); } if (!gst_init_check (&argc, &argv)) { if (argv != NULL) { for (i = 0; i < argc; i++) g_free (argv[i]); g_free (argv); } PyErr_SetString (PyExc_RuntimeError, "can't initialize module gst"); setlocale(LC_NUMERIC, "C"); return; } setlocale(LC_NUMERIC, "C"); if (argv != NULL) { PySys_SetArgv (argc, argv); for (i = 0; i < argc; i++) g_free (argv[i]); g_free (argv); } /* Initialize debugging category */ GST_DEBUG_CATEGORY_INIT (pygst_debug, "pygst", 0, "GStreamer python bindings"); GST_DEBUG_CATEGORY_INIT (python_debug, "python", GST_DEBUG_FG_GREEN, "python code using gst-python"); /* _pygst_register_boxed_types (NULL); */ pygobject_register_sinkfunc(GST_TYPE_OBJECT, pygstobject_sink); m = Py_InitModule ("_gst", pygst_functions); d = PyModule_GetDict (m); /* gst+ version */ tuple = Py_BuildValue ("(iii)", GST_VERSION_MAJOR, GST_VERSION_MINOR, GST_VERSION_MICRO); PyDict_SetItemString(d, "gst_version", tuple); Py_DECREF(tuple); /* gst-python version */ tuple = Py_BuildValue ("(iii)", PYGST_MAJOR_VERSION, PYGST_MINOR_VERSION, PYGST_MICRO_VERSION); PyDict_SetItemString(d, "pygst_version", tuple); Py_DECREF(tuple); /* clock stuff */ PyModule_AddIntConstant(m, "SECOND", GST_SECOND); PyModule_AddIntConstant(m, "MSECOND", GST_MSECOND); PyModule_AddIntConstant(m, "NSECOND", GST_NSECOND); PyModule_AddObject(m, "CLOCK_TIME_NONE", PyLong_FromUnsignedLongLong(GST_CLOCK_TIME_NONE)); /* exceptions */ PyGstExc_LinkError = PyErr_NewException("gst.LinkError", PyExc_RuntimeError, NULL); PyDict_SetItemString(d, "LinkError", PyGstExc_LinkError); PyGstExc_AddError = PyErr_NewException("gst.AddError", PyExc_RuntimeError, NULL); PyDict_SetItemString(d, "AddError", PyGstExc_AddError); PyGstExc_RemoveError = PyErr_NewException("gst.RemoveError", PyExc_RuntimeError, NULL); PyDict_SetItemString(d, "RemoveError", PyGstExc_RemoveError); pygstminiobject_register_class(d, "GstMiniObject", GST_TYPE_MINI_OBJECT, &PyGstMiniObject_Type, NULL); pyg_register_boxed_custom(GST_TYPE_MINI_OBJECT, pygstminiobject_from_gvalue, pygstminiobject_to_gvalue); pygst_register_classes (d); pygst_add_constants (m, "GST_"); /* make our types available */ PyModule_AddObject (m, "TYPE_ELEMENT_FACTORY", pyg_type_wrapper_new(GST_TYPE_ELEMENT_FACTORY)); PyModule_AddObject (m, "TYPE_INDEX_FACTORY", pyg_type_wrapper_new(GST_TYPE_INDEX_FACTORY)); PyModule_AddObject (m, "TYPE_TYPE_FIND_FACTORY", pyg_type_wrapper_new(GST_TYPE_TYPE_FIND_FACTORY)); g_timeout_add_full (0, 100, python_do_pending_calls, NULL, NULL); if (PyErr_Occurred ()) { Py_FatalError ("can't initialize module gst"); } }