1 /*****************************************************************************
2 * dvdread.c : DvdRead input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: dvdread.c,v 1.6 2002/01/04 14:01:34 sam Exp $
7 * Authors: Samuel Hocevar <sam@zoy.org>
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
28 #include <string.h> /* strdup() */
30 #include <videolan/vlc.h>
34 # include "dummy_dvdcss.h"
37 /*****************************************************************************
38 * Capabilities defined in the other files.
39 *****************************************************************************/
40 void _M( input_getfunctions )( function_list_t * p_function_list );
42 /*****************************************************************************
44 *****************************************************************************/
46 static void *p_libdvdcss;
47 static void ProbeLibDVDCSS ( void );
48 static void UnprobeLibDVDCSS( void );
51 /*****************************************************************************
52 * Build configuration tree.
53 *****************************************************************************/
59 SET_DESCRIPTION( "DVDRead input module, uses libdvdcss if present" )
60 ADD_CAPABILITY( INPUT, 70 )
62 SET_DESCRIPTION( "DVDRead input module, linked with libdvdcss" )
63 ADD_CAPABILITY( INPUT, 80 )
65 ADD_SHORTCUT( "dvdread" )
70 _M( input_getfunctions )( &p_module->p_functions->input );
76 MODULE_DEACTIVATE_START
80 MODULE_DEACTIVATE_STOP
83 /* Following functions are local */
86 /*****************************************************************************
87 * ProbeLibDVDCSS: look for a libdvdcss object.
88 *****************************************************************************
89 * This functions looks for libdvdcss, using dlopen(), and fills function
90 * pointers with what it finds. On failure, uses the dummy libdvdcss
91 * replacement provided by vlc.
92 *****************************************************************************/
93 static void ProbeLibDVDCSS( void )
95 char *pp_filelist[4] = { "libdvdcss.so.0",
97 "./lib/libdvdcss.so.0",
99 char **pp_file = pp_filelist;
101 /* Try to open the dynamic object */
104 p_libdvdcss = dlopen( *pp_file, RTLD_LAZY );
105 if( p_libdvdcss != NULL )
107 intf_WarnMsg( 2, "module: builtin module `dvd' found libdvdcss "
108 "in `%s'", *pp_file );
113 } while( *pp_file != NULL );
115 /* If libdvdcss.so was found, check that it's valid */
116 if( p_libdvdcss == NULL )
118 intf_ErrMsg( "dvd warning: libdvdcss.so.0 not present" );
122 /* Check for libdvdcss 0.0.1 */
123 if( dlsym( p_libdvdcss, "dvdcss_crack" ) != NULL )
125 intf_ErrMsg( "dvd warning: libdvdcss.so.0 has deprecated symbol "
126 "dvdcss_crack(), please upgrade" );
127 dlclose( p_libdvdcss );
132 dvdcss_open = dlsym( p_libdvdcss, "dvdcss_open" );
133 dvdcss_close = dlsym( p_libdvdcss, "dvdcss_close" );
134 dvdcss_title = dlsym( p_libdvdcss, "dvdcss_title" );
135 dvdcss_seek = dlsym( p_libdvdcss, "dvdcss_seek" );
136 dvdcss_read = dlsym( p_libdvdcss, "dvdcss_read" );
137 dvdcss_readv = dlsym( p_libdvdcss, "dvdcss_readv" );
138 dvdcss_error = dlsym( p_libdvdcss, "dvdcss_error" );
140 if( dvdcss_open == NULL || dvdcss_close == NULL
141 || dvdcss_title == NULL || dvdcss_seek == NULL
142 || dvdcss_read == NULL || dvdcss_readv == NULL
143 || dvdcss_error == NULL )
145 intf_ErrMsg( "dvd warning: missing symbols in libdvdcss.so.0, "
146 "please upgrade libdvdcss or vlc" );
147 dlclose( p_libdvdcss );
153 /* If libdvdcss was not found or was not valid, use the dummy
154 * replacement functions. */
155 if( p_libdvdcss == NULL )
157 intf_ErrMsg( "dvd warning: no valid libdvdcss found, "
158 "I will only play unencrypted DVDs" );
159 intf_ErrMsg( "dvd warning: get libdvdcss at "
160 "http://www.videolan.org/libdvdcss/" );
162 dvdcss_open = dummy_dvdcss_open;
163 dvdcss_close = dummy_dvdcss_close;
164 dvdcss_title = dummy_dvdcss_title;
165 dvdcss_seek = dummy_dvdcss_seek;
166 dvdcss_read = dummy_dvdcss_read;
167 dvdcss_readv = dummy_dvdcss_readv;
168 dvdcss_error = dummy_dvdcss_error;
172 /*****************************************************************************
173 * UnprobeLibDVDCSS: free resources allocated by ProbeLibDVDCSS, if any.
174 *****************************************************************************/
175 static void UnprobeLibDVDCSS( void )
177 if( p_libdvdcss != NULL )
179 dlclose( p_libdvdcss );