1 /*****************************************************************************
2 * vlc_position.c: vlc.Position binding
3 *****************************************************************************
4 * Copyright (C) 2006 the VideoLAN team
7 * Authors: Olivier Aubert <oaubert at bat710.univ-lyon1.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
25 /***********************************************************************
27 ***********************************************************************/
30 PyPosition_new( PyTypeObject *type, PyObject *args, PyObject *kwds )
33 static char *kwlist[] = { "value", "origin", "key", NULL};
35 self = PyObject_New( PyPosition, &PyPosition_Type );
38 self->origin=mediacontrol_AbsolutePosition;
39 self->key=mediacontrol_MediaTime;
41 if(! PyArg_ParseTupleAndKeywords( args, kwds, "|lii", kwlist,
49 if( self->key != mediacontrol_MediaTime
50 && self->key != mediacontrol_ByteCount
51 && self->key != mediacontrol_SampleCount )
53 PyErr_SetString ( MediaControl_InternalException, "Invalid key value" );
57 if( self->origin != mediacontrol_AbsolutePosition
58 && self->origin != mediacontrol_RelativePosition
59 && self->origin != mediacontrol_ModuloPosition )
61 PyErr_SetString ( MediaControl_InternalException, "Invalid origin value" );
66 return ( PyObject * )self;
69 mediacontrol_PositionKey
70 positionKey_py_to_c( PyObject * py_key )
72 mediacontrol_PositionKey key_position = mediacontrol_MediaTime;
75 if( !PyArg_Parse( py_key, "i", &key ) )
77 PyErr_SetString ( MediaControl_InternalException, "Invalid key value" );
83 case 0: key = mediacontrol_ByteCount; break;
84 case 1: key = mediacontrol_SampleCount; break;
85 case 2: key = mediacontrol_MediaTime; break;
90 mediacontrol_PositionOrigin
91 positionOrigin_py_to_c( PyObject * py_origin )
93 mediacontrol_PositionOrigin origin_position = mediacontrol_AbsolutePosition;
96 if( !PyArg_Parse( py_origin,"i", &origin ) )
98 PyErr_SetString( MediaControl_InternalException,
99 "Invalid origin value" );
100 return origin_position;
105 case 0: origin_position = mediacontrol_AbsolutePosition; break;
106 case 1: origin_position = mediacontrol_RelativePosition; break;
107 case 2: origin_position = mediacontrol_ModuloPosition; break;
110 return origin_position;
113 /* Methods for transforming the Position Python object to Position structure*/
114 mediacontrol_Position*
115 position_py_to_c( PyObject * py_position )
117 mediacontrol_Position * a_position = NULL;
118 PyPosition *pos = ( PyPosition* )py_position;
120 a_position = ( mediacontrol_Position* )malloc( sizeof( mediacontrol_Position ) );
123 PyErr_SetString( PyExc_MemoryError, "Out of memory" );
129 /* If we give a NULL value, it will be considered as
130 a 0 relative position in mediatime */
131 a_position->origin = mediacontrol_RelativePosition;
132 a_position->key = mediacontrol_MediaTime;
133 a_position->value = 0;
135 else if( PyObject_IsInstance( py_position, ( PyObject* )&PyPosition_Type ) )
137 a_position->origin = pos->origin;
138 a_position->key = pos->key;
139 a_position->value = ntohll(pos->value);
143 /* Feature: if we give an integer, it will be considered as
144 a relative position in mediatime */
145 a_position->origin = mediacontrol_RelativePosition;
146 a_position->key = mediacontrol_MediaTime;
147 a_position->value = PyLong_AsLongLong( py_position );
153 position_c_to_py( mediacontrol_Position *position )
155 PyPosition* py_retval;
157 py_retval = PyObject_New( PyPosition, &PyPosition_Type );
158 py_retval->origin = position->origin;
159 py_retval->key = position->key;
160 py_retval->value = position->value;
165 static PyMethodDef PyPosition_methods[] =
167 { NULL } /* Sentinel */
170 static PyMemberDef PyPosition_members[] =
172 { "origin", T_INT, offsetof( PyPosition, origin ), 0, "Position origin" },
173 { "key", T_INT, offsetof( PyPosition, key ), 0, "Position key" },
174 { "value", T_ULONG, offsetof( PyPosition, value ), 0, "Position value" },
175 { NULL } /* Sentinel */
178 static PyTypeObject PyPosition_Type =
180 PyObject_HEAD_INIT( NULL )
182 "vlc.Position", /*tp_name*/
183 sizeof( PyPosition_Type ), /*tp_basicsize*/
192 0, /*tp_as_sequence*/
200 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
201 "Represent a Position with value, origin and key", /* tp_doc */
204 0, /* tp_richcompare */
205 0, /* tp_weaklistoffset */
208 PyPosition_methods, /* tp_methods */
209 PyPosition_members, /* tp_members */
213 0, /* tp_descr_get */
214 0, /* tp_descr_set */
215 0, /* tp_dictoffset */
218 PyPosition_new, /* tp_new */