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 E_(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              ( psz_ext && !strcasecmp( psz_ext, ".rm") ) ||
  71              /* A .ram file can contain a single rtsp link */
  72              ( p_demux->psz_demux && !strcmp(p_demux->psz_demux, "m3u") ) )
  73     {
  74         ;
  75     }
  76     else
  77     {
  78         return VLC_EGENERIC;
  79     }
  80     msg_Dbg( p_demux, "found valid M3U playlist file");
  81
  82     p_demux->pf_control = Control;
  83     p_demux->pf_demux = Demux;
  84     p_demux->p_sys = malloc( sizeof(demux_sys_t) );
  85     if( p_demux->p_sys == NULL )
  86     {
  87         msg_Err( p_demux, "Out of memory" );
  88         return VLC_ENOMEM;
  89     }
  90     p_demux->p_sys->psz_prefix = E_(FindPrefix)( p_demux );
  91
  92     return VLC_SUCCESS;
  93 }
  94
  95 /*****************************************************************************
  96  * Deactivate: frees unused data
  97  *****************************************************************************/
  98 void E_(Close_M3U)( vlc_object_t *p_this )
  99 {
 100     demux_t *p_demux = (demux_t *)p_this;
 101
 102     if( p_demux->p_sys->psz_prefix ) free( p_demux->p_sys->psz_prefix );
 103     free( p_demux->p_sys );
 104 }
 105
 106 static int Demux( demux_t *p_demux )
 107 {
 108     playlist_t *p_playlist;
 109     char       *psz_line;
 110
 111     char *psz_name = NULL;
 112     mtime_t i_duration = -1;
 113     char **ppsz_options = NULL;
 114     int i_options = 0, i;
 115
 116     playlist_item_t *p_item, *p_current;
 117
 118     vlc_bool_t b_play;
 119
 120     vlc_bool_t b_cleanup = VLC_FALSE;
 121
 122     p_playlist = (playlist_t *) vlc_object_find( p_demux, VLC_OBJECT_PLAYLIST,
 123                                                  FIND_PARENT );
 124     if( !p_playlist )
 125     {
 126         msg_Err( p_demux, "can't find playlist" );
 127         return -1;
 128     }
 129
 130     b_play = E_(FindItem)( p_demux, p_playlist, &p_current );
 131
 132     playlist_ItemToNode( p_playlist, p_current );
 133     p_current->input.i_type = ITEM_TYPE_PLAYLIST;
 134
 135     psz_line = stream_ReadLine( p_demux->s );
 136     while( psz_line )
 137     {
 138         char *psz_parse = psz_line;
 139
 140         /* Skip leading tabs and spaces */
 141         while( *psz_parse == ' ' || *psz_parse == '\t' ||
 142                *psz_parse == '\n' || *psz_parse == '\r' ) psz_parse++;
 143
 144         if( *psz_parse == '#' )
 145         {
 146             /* Parse extra info */
 147
 148             /* Skip leading tabs and spaces */
 149             while( *psz_parse == ' ' || *psz_parse == '\t' ||
 150                    *psz_parse == '\n' || *psz_parse == '\r' ||
 151                    *psz_parse == '#' ) psz_parse++;
 152
 153             if( !*psz_parse ) goto error;
 154
 155             if( !strncasecmp( psz_parse, "EXTINF:", sizeof("EXTINF:") -1 ) )
 156             {
 157                 /* Extended info */
 158                 char *psz_duration;
 159                 psz_parse += sizeof("EXTINF:") - 1;
 160                 while( *psz_parse == '\t' || *psz_parse == ' ' ) psz_parse++;
 161
 162                 psz_duration = psz_parse;
 163                 psz_parse = strchr( psz_parse, ',' );
 164                 if( psz_parse )
 165                 {
 166                     *psz_parse = '\0';
 167                     psz_parse++;
 168                     psz_name = strdup( psz_parse );
 169                     i_duration = atoi( psz_duration );
 170                     if( i_duration != -1 ) i_duration *= 1000000;
 171                 }
 172             }
 173             else if( !strncasecmp( psz_parse, "EXTVLCOPT:",
 174                                    sizeof("EXTVLCOPT:") -1 ) )
 175
 176             {
 177                 /* VLC Option */
 178                 char *psz_option;
 179                 psz_parse += sizeof("EXTVLCOPT:") -1;
 180                 if( !*psz_parse ) goto error;
 181
 182                 psz_option = strdup( psz_parse );
 183                 if( psz_option )
 184                     INSERT_ELEM( ppsz_options, i_options, i_options,
 185                                  psz_option );
 186             }
 187         }
 188         else if( *psz_parse )
 189         {
 190             char *psz_mrl;
 191             if( !psz_name || !*psz_name )
 192             {
 193                 /* Use filename as name for relative entries */
 194                 psz_name = strdup( psz_parse );
 195             }
 196
 197             psz_mrl = E_(ProcessMRL)( psz_parse, p_demux->p_sys->psz_prefix );
 198
 199             b_cleanup = VLC_TRUE;
 200             if( !psz_mrl ) goto error;
 201
 202             p_item = playlist_ItemNew( p_playlist, psz_mrl, psz_name );
 203             for( i = 0; i< i_options; i++ )
 204             {
 205                 playlist_ItemAddOption( p_item, ppsz_options[i] );
 206             }
 207             p_item->input.i_duration = i_duration;
 208
 209             playlist_NodeAddItem( p_playlist, p_item,
 210                                   p_current->pp_parents[0]->i_view,
 211                                   p_current, PLAYLIST_APPEND,
 212                                   PLAYLIST_END );
 213
 214             /* We need to declare the parents of the node as the
 215              *                  * same of the parent's ones */
 216             playlist_CopyParents( p_current, p_item );
 217
 218             vlc_input_item_CopyOptions( &p_current->input,
 219                                         &p_item->input );
 220
 221             free( psz_mrl );
 222         }
 223
 224  error:
 225
 226         /* Fetch another line */
 227         free( psz_line );
 228         psz_line = stream_ReadLine( p_demux->s );
 229         if( !psz_line ) b_cleanup = VLC_TRUE;
 230
 231         if( b_cleanup )
 232         {
 233             /* Cleanup state */
 234             while( i_options-- ) free( ppsz_options[i_options] );
 235             if( ppsz_options ) free( ppsz_options );
 236             ppsz_options = NULL; i_options = 0;
 237             if( psz_name ) free( psz_name );
 238             psz_name = NULL;
 239             i_duration = -1;
 240
 241             b_cleanup = VLC_FALSE;
 242         }
 243     }
 244
 245     /* Go back and play the playlist */
 246     if( b_play && p_playlist->status.p_item &&
 247         p_playlist->status.p_item->i_children > 0 )
 248     {
 249         playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 250                           p_playlist->status.i_view,
 251                           p_playlist->status.p_item,
 252                           p_playlist->status.p_item->pp_children[0] );
 253     }
 254
 255     vlc_object_release( p_playlist );
 256     return VLC_SUCCESS;
 257 }
 258
 259 static int Control( demux_t *p_demux, int i_query, va_list args )
 260 {
 261     return VLC_EGENERIC;
 262 }