1 /*****************************************************************************
2 * dvdread.c : DvdRead input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: dvdread.c,v 1.3 2001/12/09 17:01:36 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 #define MODULE_NAME dvdread
25 #include "modules_inner.h"
27 /*****************************************************************************
29 *****************************************************************************/
32 #include <stdlib.h> /* malloc(), free() */
33 #include <string.h> /* strdup() */
37 # include "dummy_dvdcss.h"
40 #include "common.h" /* boolean_t, byte_t */
46 #include "modules_export.h"
48 /*****************************************************************************
49 * Capabilities defined in the other files.
50 *****************************************************************************/
51 void _M( input_getfunctions )( function_list_t * p_function_list );
53 /*****************************************************************************
55 *****************************************************************************/
57 static void *p_libdvdcss;
58 static void ProbeLibDVDCSS ( void );
59 static void UnprobeLibDVDCSS( void );
62 /*****************************************************************************
63 * Build configuration tree.
64 *****************************************************************************/
66 ADD_WINDOW( "Configuration for DVD module" )
67 ADD_COMMENT( "foobar !" )
71 p_module->i_capabilities = MODULE_CAPABILITY_NULL
72 | MODULE_CAPABILITY_INPUT;
74 p_module->psz_longname = "DVD input module, uses libdvdcss if present";
76 p_module->psz_longname = "DVD input module, linked with libdvdcss";
81 _M( input_getfunctions )( &p_module->p_functions->input );
87 MODULE_DEACTIVATE_START
91 MODULE_DEACTIVATE_STOP
94 /* Following functions are local */
97 /*****************************************************************************
98 * ProbeLibDVDCSS: look for a libdvdcss object.
99 *****************************************************************************
100 * This functions looks for libdvdcss, using dlopen(), and fills function
101 * pointers with what it finds. On failure, uses the dummy libdvdcss
102 * replacement provided by vlc.
103 *****************************************************************************/
104 static void ProbeLibDVDCSS( void )
106 char *pp_filelist[4] = { "libdvdcss.so.0",
108 "./lib/libdvdcss.so.0",
110 char **pp_file = pp_filelist;
112 /* Try to open the dynamic object */
115 p_libdvdcss = dlopen( *pp_file, RTLD_LAZY );
116 if( p_libdvdcss != NULL )
118 intf_WarnMsg( 2, "module: builtin module `dvd' found libdvdcss "
119 "in `%s'", *pp_file );
124 } while( *pp_file != NULL );
126 /* If libdvdcss.so was found, check that it's valid */
127 if( p_libdvdcss == NULL )
129 intf_ErrMsg( "dvd warning: libdvdcss.so.0 not present" );
133 /* Check for libdvdcss 0.0.1 */
134 if( dlsym( p_libdvdcss, "dvdcss_crack" ) != NULL )
136 intf_ErrMsg( "dvd warning: libdvdcss.so.0 has deprecated symbol "
137 "dvdcss_crack(), please upgrade" );
138 dlclose( p_libdvdcss );
143 dvdcss_open = dlsym( p_libdvdcss, "dvdcss_open" );
144 dvdcss_close = dlsym( p_libdvdcss, "dvdcss_close" );
145 dvdcss_title = dlsym( p_libdvdcss, "dvdcss_title" );
146 dvdcss_seek = dlsym( p_libdvdcss, "dvdcss_seek" );
147 dvdcss_read = dlsym( p_libdvdcss, "dvdcss_read" );
148 dvdcss_readv = dlsym( p_libdvdcss, "dvdcss_readv" );
149 dvdcss_error = dlsym( p_libdvdcss, "dvdcss_error" );
151 if( dvdcss_open == NULL || dvdcss_close == NULL
152 || dvdcss_title == NULL || dvdcss_seek == NULL
153 || dvdcss_read == NULL || dvdcss_readv == NULL
154 || dvdcss_error == NULL )
156 intf_ErrMsg( "dvd warning: missing symbols in libdvdcss.so.0, "
157 "please upgrade libdvdcss or vlc" );
158 dlclose( p_libdvdcss );
164 /* If libdvdcss was not found or was not valid, use the dummy
165 * replacement functions. */
166 if( p_libdvdcss == NULL )
168 intf_ErrMsg( "dvd warning: no valid libdvdcss found, "
169 "I will only play unencrypted DVDs" );
170 intf_ErrMsg( "dvd warning: get libdvdcss at "
171 "http://www.videolan.org/libdvdcss/" );
173 dvdcss_open = dummy_dvdcss_open;
174 dvdcss_close = dummy_dvdcss_close;
175 dvdcss_title = dummy_dvdcss_title;
176 dvdcss_seek = dummy_dvdcss_seek;
177 dvdcss_read = dummy_dvdcss_read;
178 dvdcss_readv = dummy_dvdcss_readv;
179 dvdcss_error = dummy_dvdcss_error;
183 /*****************************************************************************
184 * UnprobeLibDVDCSS: free resources allocated by ProbeLibDVDCSS, if any.
185 *****************************************************************************/
186 static void UnprobeLibDVDCSS( void )
188 if( p_libdvdcss != NULL )
190 dlclose( p_libdvdcss );