1 /* dvd_demux.c: DVD demux functions.
2 *****************************************************************************
3 * Copyright (C) 1998-2001 VideoLAN
4 * $Id: dvd_demux.c,v 1.2 2002/03/06 12:26:35 stef Exp $
6 * Author: Stéphane Borel <stef@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
30 #include <videolan/vlc.h>
37 #include <sys/types.h>
42 #ifdef STRNCASECMP_IN_STRINGS_H
46 #include "stream_control.h"
47 #include "input_ext-intf.h"
48 #include "input_ext-dec.h"
49 #include "input_ext-plugins.h"
53 /* how many packets DVDDemux will read in each loop */
54 #define DVD_READ_ONCE 64
56 /*****************************************************************************
58 *****************************************************************************/
60 /* called from outside */
61 static int DVDRewind ( struct input_thread_s * );
62 static int DVDDemux ( struct input_thread_s * );
63 static int DVDInit ( struct input_thread_s * );
64 static void DVDEnd ( struct input_thread_s * );
66 void DVDLaunchDecoders( input_thread_t * );
68 /*****************************************************************************
69 * Functions exported as capabilities. They are declared as static so that
70 * we don't pollute the namespace too much.
71 *****************************************************************************/
72 void _M( demux_getfunctions)( function_list_t * p_function_list )
74 #define demux p_function_list->functions.demux
75 demux.pf_init = DVDInit;
76 demux.pf_end = DVDEnd;
77 demux.pf_demux = DVDDemux;
78 demux.pf_rewind = DVDRewind;
83 * Data demux functions
86 /*****************************************************************************
87 * DVDInit: initializes DVD structures
88 *****************************************************************************/
89 static int DVDInit( input_thread_t * p_input )
91 vlc_mutex_lock( &p_input->stream.stream_lock );
93 DVDLaunchDecoders( p_input );
95 vlc_mutex_unlock( &p_input->stream.stream_lock );
100 /*****************************************************************************
101 * DVDEnd: frees unused data
102 *****************************************************************************/
103 static void DVDEnd( input_thread_t * p_input )
107 /*****************************************************************************
109 *****************************************************************************/
110 static int DVDDemux( input_thread_t * p_input )
113 data_packet_t * p_data;
115 /* Read headers to compute payload length */
116 for( i = 0 ; i < DVD_READ_ONCE ; i++ )
118 input_ReadPS( p_input, &p_data );
120 input_DemuxPS( p_input, p_data );
126 /*****************************************************************************
127 * DVDRewind : reads a stream backward
128 *****************************************************************************/
129 static int DVDRewind( input_thread_t * p_input )