git.sesse.net Git - vlc/blob - modules/demux/playlist/m3u.c

   1 /*****************************************************************************
   2  * m3u.c : M3U playlist format import
   3  *****************************************************************************
   4  * Copyright (C) 2004 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *          Sigmund Augdal <sigmunau@idi.ntnu.no>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <stdlib.h>                                      /* malloc(), free() */
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc/input.h>
  32 #include <vlc/intf.h>
  33
  34 #include <errno.h>                                                 /* ENOMEM */
  35 #include "playlist.h"
  36
  37 struct demux_sys_t
  38 {
  39     char *psz_prefix;
  40 };
  41
  42 /*****************************************************************************
  43  * Local prototypes
  44  *****************************************************************************/
  45 static int Demux( demux_t *p_demux);
  46 static int Control( demux_t *p_demux, int i_query, va_list args );
  47
  48 /*****************************************************************************
  49  * Import_M3U: main import function
  50  *****************************************************************************/
  51 int Import_M3U( vlc_object_t *p_this )
  52 {
  53     demux_t *p_demux = (demux_t *)p_this;
  54
  55     uint8_t *p_peek;
  56     char    *psz_ext;
  57
  58     if( stream_Peek( p_demux->s , &p_peek, 7 ) < 7 )
  59     {
  60         return VLC_EGENERIC;
  61     }
  62     psz_ext = strrchr ( p_demux->psz_path, '.' );
  63
  64     if( !strncmp( p_peek, "#EXTM3U", 7 ) )
  65     {
  66         ;
  67     }
  68     else if( ( psz_ext && !strcasecmp( psz_ext, ".m3u") ) ||
  69              ( psz_ext && !strcasecmp( psz_ext, ".ram") ) ||
  70              /* A .ram file can contain a single rtsp link */
  71              ( p_demux->psz_demux && !strcmp(p_demux->psz_demux, "m3u") ) )
  72     {
  73         ;
  74     }
  75     else
  76     {
  77         return VLC_EGENERIC;
  78     }
  79     msg_Dbg( p_demux, "found valid M3U playlist file");
  80
  81     p_demux->pf_control = Control;
  82     p_demux->pf_demux = Demux;
  83     p_demux->p_sys = malloc( sizeof(demux_sys_t) );
  84     if( p_demux->p_sys == NULL )
  85     {
  86         msg_Err( p_demux, "Out of memory" );
  87         return VLC_ENOMEM;
  88     }
  89     p_demux->p_sys->psz_prefix = FindPrefix( p_demux );
  90
  91     return VLC_SUCCESS;
  92 }
  93
  94 /*****************************************************************************
  95  * Deactivate: frees unused data
  96  *****************************************************************************/
  97 void Close_M3U( vlc_object_t *p_this )
  98 {
  99     demux_t *p_demux = (demux_t *)p_this;
 100
 101     if( p_demux->p_sys->psz_prefix ) free( p_demux->p_sys->psz_prefix );
 102     free( p_demux->p_sys );
 103 }
 104
 105 static int Demux( demux_t *p_demux )
 106 {
 107     playlist_t *p_playlist;
 108     char       *psz_line;
 109
 110     char *psz_name = NULL;
 111     mtime_t i_duration = -1;
 112     char **ppsz_options = NULL;
 113     int i_options = 0, i;
 114
 115     playlist_item_t *p_item;
 116
 117     vlc_bool_t b_cleanup = VLC_FALSE;
 118
 119     p_playlist = (playlist_t *) vlc_object_find( p_demux, VLC_OBJECT_PLAYLIST,
 120                                                  FIND_PARENT );
 121     if( !p_playlist )
 122     {
 123         msg_Err( p_demux, "can't find playlist" );
 124         return -1;
 125     }
 126
 127     playlist_ItemToNode( p_playlist, p_playlist->status.p_item );
 128     p_playlist->status.p_item->input.i_type = ITEM_TYPE_PLAYLIST;
 129
 130     psz_line = stream_ReadLine( p_demux->s );
 131     while( psz_line )
 132     {
 133         char *psz_parse = psz_line;
 134
 135         /* Skip leading tabs and spaces */
 136         while( *psz_parse == ' ' || *psz_parse == '\t' ||
 137                *psz_parse == '\n' || *psz_parse == '\r' ) psz_parse++;
 138
 139         if( *psz_parse == '#' )
 140         {
 141             /* Parse extra info */
 142
 143             /* Skip leading tabs and spaces */
 144             while( *psz_parse == ' ' || *psz_parse == '\t' ||
 145                    *psz_parse == '\n' || *psz_parse == '\r' ||
 146                    *psz_parse == '#' ) psz_parse++;
 147
 148             if( !*psz_parse ) goto error;
 149
 150             if( !strncasecmp( psz_parse, "EXTINF:", sizeof("EXTINF:") -1 ) )
 151             {
 152                 /* Extended info */
 153                 char *psz_duration;
 154                 psz_parse += sizeof("EXTINF:") - 1;
 155                 while( *psz_parse == '\t' || *psz_parse == ' ' ) psz_parse++;
 156
 157                 psz_duration = psz_parse;
 158                 psz_parse = strchr( psz_parse, ',' );
 159                 if( psz_parse )
 160                 {
 161                     *psz_parse = '\0';
 162                     psz_parse++;
 163                     psz_name = strdup( psz_parse );
 164                     i_duration = atoi( psz_duration );
 165                     if( i_duration != -1 ) i_duration *= 1000000;
 166                 }
 167             }
 168             else if( !strncasecmp( psz_parse, "EXTVLCOPT:",
 169                                    sizeof("EXTVLCOPT:") -1 ) )
 170
 171             {
 172                 /* VLC Option */
 173                 char *psz_option;
 174                 psz_parse += sizeof("EXTVLCOPT:") -1;
 175                 if( !*psz_parse ) goto error;
 176
 177                 psz_option = strdup( psz_parse );
 178                 if( psz_option )
 179                     INSERT_ELEM( ppsz_options, i_options, i_options,
 180                                  psz_option );
 181             }
 182         }
 183         else if( *psz_parse )
 184         {
 185             char *psz_mrl =
 186                 ProcessMRL( psz_parse, p_demux->p_sys->psz_prefix );
 187
 188             b_cleanup = VLC_TRUE;
 189             if( !psz_mrl ) goto error;
 190
 191             p_item = playlist_ItemNew( p_playlist, psz_mrl, psz_name );
 192             for( i = 0; i< i_options; i++ )
 193             {
 194                 playlist_ItemAddOption( p_item, ppsz_options[i] );
 195             }
 196             p_item->input.i_duration = i_duration;
 197
 198             playlist_NodeAddItem( p_playlist, p_item,
 199                            p_playlist->status.p_item->pp_parents[0]->i_view,
 200                            p_playlist->status.p_item, PLAYLIST_APPEND,
 201                            PLAYLIST_END );
 202
 203             /* We need to declare the parents of the node as the
 204              *                  * same of the parent's ones */
 205             for( i= 1 ; i< p_playlist->status.p_item->i_parents; i ++ )
 206             {
 207                     playlist_ItemAddParent( p_item,
 208                               p_playlist->status.p_item->pp_parents[i]->i_view,
 209                               p_playlist->status.p_item );
 210             }
 211             free( psz_mrl );
 212         }
 213
 214  error:
 215
 216         /* Fetch another line */
 217         free( psz_line );
 218         psz_line = stream_ReadLine( p_demux->s );
 219         if( !psz_line ) b_cleanup = VLC_TRUE;
 220
 221         if( b_cleanup )
 222         {
 223             /* Cleanup state */
 224             while( i_options-- ) free( ppsz_options[i_options] );
 225             if( ppsz_options ) free( ppsz_options );
 226             ppsz_options = NULL; i_options = 0;
 227             if( psz_name ) free( psz_name );
 228             psz_name = NULL;
 229             i_duration = -1;
 230
 231             b_cleanup = VLC_FALSE;
 232         }
 233     }
 234
 235     /* Go back and play the playlist */
 236     playlist_Control( p_playlist, PLAYLIST_VIEWPLAY, p_playlist->status.i_view,
 237                       p_playlist->status.p_item, NULL );
 238
 239     vlc_object_release( p_playlist );
 240     return VLC_SUCCESS;
 241 }
 242
 243 static int Control( demux_t *p_demux, int i_query, va_list args )
 244 {
 245     return VLC_EGENERIC;
 246 }