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     input_item_t *p_input;
  91
  92     input_item_t *p_current_input = GetCurrentItem(p_demux);
  93
  94     input_item_node_t *p_subitems = input_item_node_Create( p_current_input );
  95
  96     while( ( psz_line = stream_ReadLine( p_demux->s ) ) )
  97     {
  98         if( !strncasecmp( psz_line, "[playlist]", sizeof("[playlist]")-1 ) ||
  99             !strncasecmp( psz_line, "[Reference]", sizeof("[Reference]")-1 ) )
 100         {
 101             free( psz_line );
 102             continue;
 103         }
 104         psz_key = psz_line;
 105         psz_value = strchr( psz_line, '=' );
 106         if( psz_value )
 107         {
 108             *psz_value='\0';
 109             psz_value++;
 110         }
 111         else
 112         {
 113             free( psz_line );
 114             continue;
 115         }
 116         if( !strcasecmp( psz_key, "version" ) )
 117         {
 118             msg_Dbg( p_demux, "pls file version: %s", psz_value );
 119             free( psz_line );
 120             continue;
 121         }
 122         if( !strcasecmp( psz_key, "numberofentries" ) )
 123         {
 124             msg_Dbg( p_demux, "pls should have %d entries", atoi(psz_value) );
 125             free( psz_line);
 126             continue;
 127         }
 128
 129         /* find the number part of of file1, title1 or length1 etc */
 130         int i_new_item;
 131         if( sscanf( psz_key, "%*[^0-9]%d", &i_new_item ) != 1 )
 132         {
 133             msg_Warn( p_demux, "couldn't find number of items" );
 134             free( psz_line );
 135             continue;
 136         }
 137
 138         if( i_item == -1 )
 139             i_item = i_new_item;
 140         else if( i_item != i_new_item )
 141         {
 142             /* we found a new item, insert the previous */
 143             if( psz_mrl )
 144             {
 145                 p_input = input_item_New( p_demux, psz_mrl, psz_name );
 146                 input_item_CopyOptions( p_current_input, p_input );
 147                 input_item_node_AppendItem( p_subitems, p_input );
 148                 vlc_gc_decref( p_input );
 149                 free( psz_mrl_orig );
 150                 psz_mrl_orig = psz_mrl = NULL;
 151             }
 152             else
 153             {
 154                 msg_Warn( p_demux, "no file= part found for item %d", i_item );
 155             }
 156             free( psz_name );
 157             psz_name = NULL;
 158             i_duration = -1;
 159             i_item = i_new_item;
 160         }
 161
 162         if( !strncasecmp( psz_key, "file", sizeof("file") -1 ) ||
 163             !strncasecmp( psz_key, "Ref", sizeof("Ref") -1 ) )
 164         {
 165             free( psz_mrl_orig );
 166             psz_mrl_orig =
 167             psz_mrl = ProcessMRL( psz_value, p_demux->p_sys->psz_prefix );
 168
 169             if( !strncasecmp( psz_key, "Ref", sizeof("Ref") -1 ) )
 170             {
 171                 if( !strncasecmp( psz_mrl, "http://", sizeof("http://") -1 ) )
 172                     memcpy( psz_mrl, "mmsh", 4 );
 173             }
 174         }
 175         else if( !strncasecmp( psz_key, "title", sizeof("title") -1 ) )
 176         {
 177             free( psz_name );
 178             psz_name = strdup( psz_value );
 179         }
 180         else if( !strncasecmp( psz_key, "length", sizeof("length") -1 ) )
 181         {
 182             i_duration = atoll( psz_value );
 183             if( i_duration != -1 )
 184             {
 185                 i_duration *= 1000000;
 186             }
 187         }
 188         else
 189         {
 190             msg_Warn( p_demux, "unknown key found in pls file: %s", psz_key );
 191         }
 192         free( psz_line );
 193     }
 194     /* Add last object */
 195     if( psz_mrl )
 196     {
 197         p_input = input_item_New( p_demux, psz_mrl, psz_name );
 198         input_item_CopyOptions( p_current_input, p_input );
 199         input_item_node_AppendItem( p_subitems, p_input );
 200         vlc_gc_decref( p_input );
 201         free( psz_mrl_orig );
 202     }
 203     else
 204     {
 205         msg_Warn( p_demux, "no file= part found for item %d", i_item );
 206     }
 207     free( psz_name );
 208     psz_name = NULL;
 209
 210     input_item_node_PostAndDelete( p_subitems );
 211
 212     vlc_gc_decref(p_current_input);
 213     return 0; /* Needed for correct operation of go back */
 214 }
 215
 216 static int Control( demux_t *p_demux, int i_query, va_list args )
 217 {
 218     VLC_UNUSED(p_demux); VLC_UNUSED(i_query); VLC_UNUSED(args);
 219     return VLC_EGENERIC;
 220 }