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gstreamer/gst/gstmodule.c
Edward Hervey 7eebff4489 gst/gstmodule.c: Added new gst.TAG_COMPOSER constant that appeared in core 0.10.15. 
Original commit message from CVS:
* gst/gstmodule.c: (init_gst):
Added new gst.TAG_COMPOSER constant that appeared in core 0.10.15.
2007-10-13 16:31:35 +00:00

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/* -*- 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 <dlehn@users.sourceforge.net>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pygstminiobject.h"
#include "pygstexception.h"
#include <locale.h>
/* include this first, before NO_IMPORT_PYGOBJECT is defined */
#include <pygobject.h>
#include <gst/gst.h>
#include <gst/gstversion.h>
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",
error ? GST_STR_NULL (error->message) : "no error given");
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, &micro, &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));
PyModule_AddObject(m, "BUFFER_OFFSET_NONE", PyLong_FromUnsignedLongLong(GST_BUFFER_OFFSET_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);
#if ((GST_VERSION_MICRO >= 10) || (GST_VERSION_MICRO == 9 && GST_VERSION_NANO > 0 ))
PyModule_AddStringConstant (m, "TAG_EXTENDED_COMMENT", GST_TAG_EXTENDED_COMMENT);
#if ((GST_VERSION_MICRO >= 14) || (GST_VERSION_MICRO == 13 && GST_VERSION_NANO > 0))
PyModule_AddStringConstant (m, "TAG_LICENSE_URI", GST_TAG_LICENSE_URI);
#if ((GST_VERSION_MICRO >= 15) || (GST_VERSION_MICRO == 14 && GST_VERSION_NANO > 0))
PyModule_AddStringConstant (m, "TAG_COMPOSER", GST_TAG_COMPOSER);
#endif
#endif
#endif
#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);
if (PyErr_Occurred ()) {
Py_FatalError ("can't initialize module gst");
}
}
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