/* -*- 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 "pygstexception.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[]; 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) { PyGILState_STATE state; if (PyOS_InterruptOccurred()) { state = pyg_gil_state_ensure(); PyErr_SetNone(PyExc_KeyboardInterrupt); pyg_gil_state_release(state); } 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; } static void sink_gstobject(GObject *object) { if (GST_OBJECT_IS_FLOATING(object)) { g_object_ref(object); gst_object_sink(GST_OBJECT(object)); } } DL_EXPORT(void) init_gst (void) { PyObject *m, *d; PyObject *av, *tuple; int argc, i; guint major, minor, micro, nano; char **argv; GError *error = NULL; 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, &error)) { gchar *errstr; if (argv != NULL) { for (i = 0; i < argc; i++) g_free (argv[i]); g_free (argv); } errstr = g_strdup_printf ("can't initialize module gst: %s", GST_STR_NULL (error->message)); PyErr_SetString (PyExc_RuntimeError, errstr); g_free (errstr); g_error_free (error); 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"); pygobject_register_sinkfunc(GST_TYPE_OBJECT, sink_gstobject); m = Py_InitModule ("_gst", pygst_functions); d = PyModule_GetDict (m); /* gst version */ gst_version(&major, &minor, µ, &nano); tuple = Py_BuildValue("(iii)", major, minor, 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)); pygst_exceptions_register_classes (d); REGISTER_TYPE(d, PyGstIterator_Type, "Iterator"); 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)); /* GStreamer core tags */ PyModule_AddStringConstant (m, "TAG_TITLE", GST_TAG_TITLE); PyModule_AddStringConstant (m, "TAG_ARTIST", GST_TAG_ARTIST); PyModule_AddStringConstant (m, "TAG_ALBUM", GST_TAG_ALBUM); PyModule_AddStringConstant (m, "TAG_DATE", GST_TAG_DATE); PyModule_AddStringConstant (m, "TAG_GENRE", GST_TAG_GENRE); PyModule_AddStringConstant (m, "TAG_COMMENT", GST_TAG_COMMENT); PyModule_AddStringConstant (m, "TAG_TRACK_NUMBER", GST_TAG_TRACK_NUMBER); PyModule_AddStringConstant (m, "TAG_TRACK_COUNT", GST_TAG_TRACK_COUNT); PyModule_AddStringConstant (m, "TAG_ALBUM_VOLUME_NUMBER", GST_TAG_ALBUM_VOLUME_NUMBER); PyModule_AddStringConstant (m, "TAG_ALBUM_VOLUME_COUNT", GST_TAG_ALBUM_VOLUME_COUNT); PyModule_AddStringConstant (m, "TAG_LOCATION", GST_TAG_LOCATION); PyModule_AddStringConstant (m, "TAG_DESCRIPTION", GST_TAG_DESCRIPTION); PyModule_AddStringConstant (m, "TAG_VERSION", GST_TAG_VERSION); PyModule_AddStringConstant (m, "TAG_ISRC", GST_TAG_ISRC); PyModule_AddStringConstant (m, "TAG_ORGANIZATION", GST_TAG_ORGANIZATION); PyModule_AddStringConstant (m, "TAG_COPYRIGHT", GST_TAG_COPYRIGHT); PyModule_AddStringConstant (m, "TAG_CONTACT", GST_TAG_CONTACT); PyModule_AddStringConstant (m, "TAG_LICENSE", GST_TAG_LICENSE); PyModule_AddStringConstant (m, "TAG_PERFORMER", GST_TAG_PERFORMER); PyModule_AddStringConstant (m, "TAG_DURATION", GST_TAG_DURATION); PyModule_AddStringConstant (m, "TAG_CODEC", GST_TAG_CODEC); PyModule_AddStringConstant (m, "TAG_VIDEO_CODEC", GST_TAG_VIDEO_CODEC); PyModule_AddStringConstant (m, "TAG_AUDIO_CODEC", GST_TAG_AUDIO_CODEC); PyModule_AddStringConstant (m, "TAG_BITRATE", GST_TAG_BITRATE); PyModule_AddStringConstant (m, "TAG_NOMINAL_BITRATE", GST_TAG_NOMINAL_BITRATE); PyModule_AddStringConstant (m, "TAG_MINIMUM_BITRATE", GST_TAG_MINIMUM_BITRATE); PyModule_AddStringConstant (m, "TAG_MAXIMUM_BITRATE", GST_TAG_MAXIMUM_BITRATE); PyModule_AddStringConstant (m, "TAG_SERIAL", GST_TAG_SERIAL); PyModule_AddStringConstant (m, "TAG_ENCODER", GST_TAG_ENCODER); PyModule_AddStringConstant (m, "TAG_ENCODER_VERSION", GST_TAG_ENCODER_VERSION); PyModule_AddStringConstant (m, "TAG_TRACK_GAIN", GST_TAG_TRACK_GAIN); PyModule_AddStringConstant (m, "TAG_TRACK_PEAK", GST_TAG_TRACK_PEAK); PyModule_AddStringConstant (m, "TAG_ALBUM_GAIN", GST_TAG_ALBUM_GAIN); PyModule_AddStringConstant (m, "TAG_ALBUM_PEAK", GST_TAG_ALBUM_PEAK); PyModule_AddStringConstant (m, "TAG_LANGUAGE_CODE", GST_TAG_LANGUAGE_CODE); #if (GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR == 10 && \ ((GST_VERSION_MICRO >= 6) || (GST_VERSION_MICRO == 5 && GST_VERSION_NANO > 0))) PyModule_AddStringConstant (m, "TAG_IMAGE", GST_TAG_IMAGE); #if ((GST_VERSION_MICRO >= 7) || (GST_VERSION_MICRO == 6 && GST_VERSION_NANO > 0 )) PyModule_AddStringConstant (m, "TAG_PREVIEW_IMAGE", GST_TAG_PREVIEW_IMAGE); #endif #endif PyModule_AddStringConstant (m, "LIBRARY_ERROR", (gchar *) g_quark_to_string(GST_LIBRARY_ERROR)); PyModule_AddStringConstant (m, "RESOURCE_ERROR",(gchar *) g_quark_to_string(GST_RESOURCE_ERROR)); PyModule_AddStringConstant (m, "CORE_ERROR", (gchar *) g_quark_to_string(GST_CORE_ERROR)); PyModule_AddStringConstant (m, "STREAM_ERROR", (gchar *) g_quark_to_string(GST_STREAM_ERROR)); g_timeout_add_full (0, 100, python_do_pending_calls, NULL, NULL); atexit(gst_deinit); if (PyErr_Occurred ()) { Py_FatalError ("can't initialize module gst"); } }