modules/demux/playlist/pls.c

   1 /*****************************************************************************
   2  * pls.c : PLS playlist format import
   3  *****************************************************************************
   4  * Copyright (C) 2004 the VideoLAN team
   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
  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., 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_demux.h>
  34
  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_PLS: main import function
  50  *****************************************************************************/
  51 int Import_PLS( vlc_object_t *p_this )
  52 {
  53     demux_t *p_demux = (demux_t *)p_this;
  54     const uint8_t *p_peek;
  55     CHECK_PEEK( p_peek, 10 );
  56
  57     if( POKE( p_peek, "[playlist]", 10 ) || POKE( p_peek, "[Reference]", 10 ) ||
  58         demux_IsPathExtension( p_demux, ".pls" )   || demux_IsForced( p_demux, "pls" ) )
  59     {
  60         ;
  61     }
  62     else return VLC_EGENERIC;
  63
  64     STANDARD_DEMUX_INIT_MSG(  "found valid PLS playlist file");
  65     p_demux->p_sys->psz_prefix = FindPrefix( p_demux );
  66
  67     return VLC_SUCCESS;
  68 }
  69
  70 /*****************************************************************************
  71  * Deactivate: frees unused data
  72  *****************************************************************************/
  73 void Close_PLS( vlc_object_t *p_this )
  74 {
  75     demux_t *p_demux = (demux_t *)p_this;
  76     free( p_demux->p_sys->psz_prefix );
  77     free( p_demux->p_sys );
  78 }
  79
  80 static int Demux( demux_t *p_demux )
  81 {
  82     mtime_t        i_duration = -1;
  83     char          *psz_name = NULL;
  84     char          *psz_line;
  85     char          *psz_mrl = NULL;
  86     char          *psz_mrl_orig = NULL;
  87     char          *psz_key;
  88     char          *psz_value;
  89     int            i_item = -1;
  90     int            i_new_item = 0;
  91     int            i_key_length;
  92     input_item_t *p_input;
  93
  94     input_item_t *p_current_input = GetCurrentItem(p_demux);
  95
  96     input_item_node_t *p_subitems = input_item_node_Create( p_current_input );
  97
  98     while( ( psz_line = stream_ReadLine( p_demux->s ) ) )
  99     {
 100         if( !strncasecmp( psz_line, "[playlist]", sizeof("[playlist]")-1 ) ||
 101             !strncasecmp( psz_line, "[Reference]", sizeof("[Reference]")-1 ) )
 102         {
 103             free( psz_line );
 104             continue;
 105         }
 106         psz_key = psz_line;
 107         psz_value = strchr( psz_line, '=' );
 108         if( psz_value )
 109         {
 110             *psz_value='\0';
 111             psz_value++;
 112         }
 113         else
 114         {
 115             msg_Warn( p_demux, "invalid line in pls file" );
 116             free( psz_line );
 117             continue;
 118         }
 119         if( !strcasecmp( psz_key, "version" ) )
 120         {
 121             msg_Dbg( p_demux, "pls file version: %s", psz_value );
 122             free( psz_line );
 123             continue;
 124         }
 125         if( !strcasecmp( psz_key, "numberofentries" ) )
 126         {
 127             msg_Dbg( p_demux, "pls should have %d entries", atoi(psz_value) );
 128             free( psz_line);
 129             continue;
 130         }
 131         /* find the number part of of file1, title1 or length1 etc */
 132         i_key_length = strlen( psz_key );
 133         if( i_key_length >= 4 ) /* Ref1 type case */
 134         {
 135             i_new_item = atoi( psz_key + 3 );
 136             if( i_new_item == 0 && i_key_length >= 5 ) /* file1 type case */
 137             {
 138                 i_new_item = atoi( psz_key + 4 );
 139                 if( i_new_item == 0 && i_key_length >= 6 ) /* title1 type case */
 140                 {
 141                     i_new_item = atoi( psz_key + 5 );
 142                     if( i_new_item == 0 && i_key_length >= 7 ) /* length1 type case */
 143                     {
 144                         i_new_item = atoi( psz_key + 6 );
 145                     }
 146                 }
 147             }
 148         }
 149         if( i_new_item == 0 )
 150         {
 151             msg_Warn( p_demux, "couldn't find number of items" );
 152             free( psz_line );
 153             continue;
 154         }
 155         if( i_item == -1 )
 156         {
 157             i_item = i_new_item;
 158         }
 159         /* we found a new item, insert the previous */
 160         if( i_item != i_new_item )
 161         {
 162             if( psz_mrl )
 163             {
 164                 p_input = input_item_New( p_demux, psz_mrl, psz_name );
 165                 input_item_CopyOptions( p_current_input, p_input );
 166                 input_item_AddSubItem( p_current_input, p_input );
 167                 input_item_node_AppendItem( p_subitems, p_input );
 168                 vlc_gc_decref( p_input );
 169             }
 170             else
 171             {
 172                 msg_Warn( p_demux, "no file= part found for item %d", i_item );
 173             }
 174             free( psz_name );
 175             psz_name = NULL;
 176             i_duration = -1;
 177             i_item = i_new_item;
 178             i_new_item = 0;
 179         }
 180         if( !strncasecmp( psz_key, "file", sizeof("file") -1 ) ||
 181             !strncasecmp( psz_key, "Ref", sizeof("Ref") -1 ) )
 182         {
 183             free( psz_mrl_orig );
 184             psz_mrl_orig =
 185             psz_mrl = ProcessMRL( psz_value, p_demux->p_sys->psz_prefix );
 186
 187             if( !strncasecmp( psz_key, "Ref", sizeof("Ref") -1 ) )
 188             {
 189                 if( !strncasecmp( psz_mrl, "http://", sizeof("http://") -1 ) )
 190                 {
 191                     psz_mrl++;
 192                     psz_mrl[0] = 'm';
 193                     psz_mrl[1] = 'm';
 194                     psz_mrl[2] = 's';
 195                 }
 196             }
 197         }
 198         else if( !strncasecmp( psz_key, "title", sizeof("title") -1 ) )
 199         {
 200             free( psz_name );
 201             psz_name = strdup( psz_value );
 202         }
 203         else if( !strncasecmp( psz_key, "length", sizeof("length") -1 ) )
 204         {
 205             i_duration = atoi( psz_value );
 206             if( i_duration != -1 )
 207             {
 208                 i_duration *= 1000000;
 209             }
 210         }
 211         else
 212         {
 213             msg_Warn( p_demux, "unknown key found in pls file: %s", psz_key );
 214         }
 215         free( psz_line );
 216     }
 217     /* Add last object */
 218     if( psz_mrl )
 219     {
 220         p_input = input_item_New( p_demux, psz_mrl, psz_name );
 221         input_item_CopyOptions( p_current_input, p_input );
 222         input_item_AddSubItem( p_current_input, p_input );
 223         input_item_node_AppendItem( p_subitems, p_input );
 224         vlc_gc_decref( p_input );
 225         free( psz_mrl_orig );
 226         psz_mrl = NULL;
 227     }
 228     else
 229     {
 230         msg_Warn( p_demux, "no file= part found for item %d", i_item );
 231     }
 232     free( psz_name );
 233     psz_name = NULL;
 234
 235     input_item_AddSubItemTree( p_subitems );
 236     input_item_node_Delete( p_subitems );
 237
 238     vlc_gc_decref(p_current_input);
 239     return 0; /* Needed for correct operation of go back */
 240 }
 241
 242 static int Control( demux_t *p_demux, int i_query, va_list args )
 243 {
 244     VLC_UNUSED(p_demux); VLC_UNUSED(i_query); VLC_UNUSED(args);
 245     return VLC_EGENERIC;
 246 }