modules/demux/playlist/ifo.c

   1 /*****************************************************************************
   2  * ifo.c: Dummy ifo demux to enable opening DVDs rips by double cliking on VIDEO_TS.IFO
   3  *****************************************************************************
   4  * Copyright (C) 2007 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea @t videolan d.t org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  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 Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <vlc_common.h>
  32 #include <vlc_access.h>
  33 #include <vlc_url.h>
  34 #include <assert.h>
  35
  36 #include "playlist.h"
  37
  38 /*****************************************************************************
  39  * Local prototypes
  40  *****************************************************************************/
  41 static int ReadDVD( stream_t *, input_item_node_t * );
  42 static int ReadDVD_VR( stream_t *, input_item_node_t * );
  43
  44 static const char *StreamLocation( const stream_t *s )
  45 {
  46     return s->psz_filepath ? s->psz_filepath : s->psz_url;
  47 }
  48
  49 /*****************************************************************************
  50  * Import_IFO: main import function
  51  *****************************************************************************/
  52 int Import_IFO( vlc_object_t *p_this )
  53 {
  54     stream_t *p_stream = (stream_t *)p_this;
  55
  56     CHECK_FILE(p_stream);
  57
  58     if( !stream_HasExtension( p_stream, ".IFO" ) )
  59         return VLC_EGENERIC;
  60
  61     const char *psz_location = StreamLocation( p_stream );
  62     if( psz_location == NULL )
  63         return VLC_EGENERIC;
  64
  65     size_t len = strlen( psz_location );
  66     if( len < 12 )
  67         return VLC_EGENERIC;
  68
  69     const char *psz_probe;
  70     const char *psz_file = &psz_location[len - 12];
  71     /* Valid filenames are :
  72      *  - VIDEO_TS.IFO
  73      *  - VTS_XX_X.IFO where X are digits
  74      */
  75     if( !strncasecmp( psz_file, "VIDEO_TS", 8 ) ||
  76         !strncasecmp( psz_file, "VTS_", 4 ) )
  77     {
  78         psz_probe = "DVDVIDEO";
  79         p_stream->pf_readdir = ReadDVD;
  80     }
  81     /* Valid filename for DVD-VR is VR_MANGR.IFO */
  82     else if( !strncasecmp( psz_file, "VR_MANGR", 8 ) )
  83     {
  84         psz_probe = "DVD_RTR_";
  85         p_stream->pf_readdir = ReadDVD_VR;
  86     }
  87     else
  88         return VLC_EGENERIC;
  89
  90     const uint8_t *p_peek;
  91     ssize_t i_peek = vlc_stream_Peek( p_stream->s, &p_peek, 8 );
  92     if( i_peek < 8 || memcmp( p_peek, psz_probe, 8 ) )
  93         return VLC_EGENERIC;
  94
  95     p_stream->pf_control = access_vaDirectoryControlHelper;
  96
  97     return VLC_SUCCESS;
  98 }
  99
 100 static int ReadDVD( stream_t *p_stream, input_item_node_t *node )
 101 {
 102     const char *psz_location = StreamLocation(p_stream);
 103
 104     char *psz_url = strndup( psz_location, strlen( psz_location ) - 12 );
 105     if( !psz_url )
 106         return VLC_ENOMEM;
 107
 108     input_item_t *p_input = input_item_New( psz_url, psz_url );
 109     if( p_input )
 110     {
 111         input_item_AddOption( p_input, "demux=dvd", VLC_INPUT_OPTION_TRUSTED );
 112         input_item_node_AppendItem( node, p_input );
 113         input_item_Release( p_input );
 114     }
 115
 116     free( psz_url );
 117
 118     return VLC_SUCCESS;
 119 }
 120
 121 static int ReadDVD_VR( stream_t *p_stream, input_item_node_t *node )
 122 {
 123     const char *psz_location = StreamLocation(p_stream);
 124
 125     size_t len = strlen( psz_location );
 126     char *psz_url = strdup( psz_location );
 127
 128     if( unlikely( psz_url == NULL ) )
 129         return VLC_EGENERIC;
 130
 131     strcpy( &psz_url[len - 12], "VR_MOVIE.VRO" );
 132
 133     input_item_t *p_input = input_item_New( psz_url, psz_url );
 134     if( p_input )
 135     {
 136         input_item_node_AppendItem( node, p_input );
 137         input_item_Release( p_input );
 138     }
 139
 140     free( psz_url );
 141
 142     return VLC_SUCCESS;
 143 }