modules/demux/playlist/pls.c

   1 /*****************************************************************************
   2  * pls.c : PLS playlist format import
   3  *****************************************************************************
   4  * Copyright (C) 2004 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with this program; if not, write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc_common.h>
  33 #include <vlc_access.h>
  34
  35 #include "playlist.h"
  36
  37 /*****************************************************************************
  38  * Local prototypes
  39  *****************************************************************************/
  40 static int ReadDir( stream_t *, input_item_node_t * );
  41
  42 /*****************************************************************************
  43  * Import_PLS: main import function
  44  *****************************************************************************/
  45 int Import_PLS( vlc_object_t *p_this )
  46 {
  47     stream_t *p_demux = (stream_t *)p_this;
  48     const uint8_t *p_peek;
  49
  50     CHECK_FILE(p_demux);
  51
  52     if( vlc_stream_Peek( p_demux->s, &p_peek, 10 ) < 10 ) {
  53         msg_Dbg( p_demux, "not enough data" );
  54         return VLC_EGENERIC;
  55     }
  56
  57     if( strncasecmp( (const char *)p_peek, "[playlist]", 10 )
  58      && strncasecmp( (const char *)p_peek, "[Reference]", 10 )
  59      && !stream_HasExtension( p_demux, ".pls" ) )
  60         return VLC_EGENERIC;
  61
  62     msg_Dbg( p_demux, "found valid PLS playlist file");
  63     p_demux->pf_readdir = ReadDir;
  64     p_demux->pf_control = access_vaDirectoryControlHelper;
  65
  66     return VLC_SUCCESS;
  67 }
  68
  69 static int ReadDir( stream_t *p_demux, input_item_node_t *p_subitems )
  70 {
  71     char          *psz_name = NULL;
  72     char          *psz_line;
  73     char          *psz_mrl = NULL;
  74     char          *psz_mrl_orig = NULL;
  75     char          *psz_key;
  76     char          *psz_value;
  77     int            i_item = -1;
  78     input_item_t *p_input;
  79
  80     input_item_t *p_current_input = GetCurrentItem(p_demux);
  81
  82     while( ( psz_line = vlc_stream_ReadLine( p_demux->s ) ) )
  83     {
  84         if( !strncasecmp( psz_line, "[playlist]", sizeof("[playlist]")-1 ) ||
  85             !strncasecmp( psz_line, "[Reference]", sizeof("[Reference]")-1 ) )
  86         {
  87             free( psz_line );
  88             continue;
  89         }
  90         psz_key = psz_line;
  91         psz_value = strchr( psz_line, '=' );
  92         if( psz_value )
  93         {
  94             *psz_value='\0';
  95             psz_value++;
  96         }
  97         else
  98         {
  99             free( psz_line );
 100             continue;
 101         }
 102         if( !strcasecmp( psz_key, "version" ) )
 103         {
 104             msg_Dbg( p_demux, "pls file version: %s", psz_value );
 105             free( psz_line );
 106             continue;
 107         }
 108         if( !strcasecmp( psz_key, "numberofentries" ) )
 109         {
 110             msg_Dbg( p_demux, "pls should have %d entries", atoi(psz_value) );
 111             free( psz_line);
 112             continue;
 113         }
 114
 115         /* find the number part of of file1, title1 or length1 etc */
 116         int i_new_item;
 117         if( sscanf( psz_key, "%*[^0-9]%d", &i_new_item ) != 1 )
 118         {
 119             msg_Warn( p_demux, "couldn't find number of items" );
 120             free( psz_line );
 121             continue;
 122         }
 123
 124         if( i_item == -1 )
 125             i_item = i_new_item;
 126         else if( i_item != i_new_item )
 127         {
 128             /* we found a new item, insert the previous */
 129             if( psz_mrl )
 130             {
 131                 p_input = input_item_New( psz_mrl, psz_name );
 132                 input_item_CopyOptions( p_input, p_current_input );
 133                 input_item_node_AppendItem( p_subitems, p_input );
 134                 input_item_Release( p_input );
 135                 free( psz_mrl_orig );
 136                 psz_mrl_orig = psz_mrl = NULL;
 137             }
 138             else
 139             {
 140                 msg_Warn( p_demux, "no file= part found for item %d", i_item );
 141             }
 142             free( psz_name );
 143             psz_name = NULL;
 144             i_item = i_new_item;
 145         }
 146
 147         if( !strncasecmp( psz_key, "file", sizeof("file") -1 ) ||
 148             !strncasecmp( psz_key, "Ref", sizeof("Ref") -1 ) )
 149         {
 150             free( psz_mrl_orig );
 151             psz_mrl_orig =
 152             psz_mrl = ProcessMRL( psz_value, p_demux->psz_url );
 153
 154             if( !strncasecmp( psz_key, "Ref", sizeof("Ref") -1 ) )
 155             {
 156                 if( !strncasecmp( psz_mrl, "http://", sizeof("http://") -1 ) )
 157                     memcpy( psz_mrl, "mmsh", 4 );
 158             }
 159         }
 160         else if( !strncasecmp( psz_key, "title", sizeof("title") -1 ) )
 161         {
 162             free( psz_name );
 163             psz_name = strdup( psz_value );
 164         }
 165         else if( !strncasecmp( psz_key, "length", sizeof("length") -1 ) )
 166             /* duration in seconds */;
 167         else
 168         {
 169             msg_Warn( p_demux, "unknown key found in pls file: %s", psz_key );
 170         }
 171         free( psz_line );
 172     }
 173     /* Add last object */
 174     if( psz_mrl )
 175     {
 176         p_input = input_item_New( psz_mrl, psz_name );
 177         input_item_CopyOptions( p_input, p_current_input );
 178         input_item_node_AppendItem( p_subitems, p_input );
 179         input_item_Release( p_input );
 180         free( psz_mrl_orig );
 181     }
 182     else
 183     {
 184         msg_Warn( p_demux, "no file= part found for item %d", i_item );
 185     }
 186     free( psz_name );
 187     psz_name = NULL;
 188
 189     return VLC_SUCCESS;
 190 }