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

   1 /*****************************************************************************
   2  * shoutcast.c: Winamp >=5.2 shoutcast demuxer
   3  *****************************************************************************
   4  * Copyright (C) 2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea -@t- videolan -Dot- org>
   8  *          based on b4s.c by 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 #include <stdlib.h>                                      /* malloc(), free() */
  29 #include <ctype.h>                                              /* isspace() */
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/input.h>
  33 #include <vlc/intf.h>
  34
  35 #include <errno.h>                                                 /* ENOMEM */
  36 #include "playlist.h"
  37 #include "vlc_xml.h"
  38
  39 struct demux_sys_t
  40 {
  41     playlist_t *p_playlist;
  42     playlist_item_t *p_current;
  43
  44     xml_t *p_xml;
  45     xml_reader_t *p_xml_reader;
  46 };
  47
  48 /* duplicate from modules/services_discovery/shout.c */
  49 #define SHOUTCAST_BASE_URL "http/shout-winamp://www.shoutcast.com/sbin/newxml.phtml"
  50 #define SHOUTCAST_TUNEIN_BASE_URL "http://www.shoutcast.com"
  51 #define SHOUTCAST_TV_TUNEIN_URL "http://www.shoutcast.com/sbin/tunein-tvstation.pls?id="
  52
  53 /*****************************************************************************
  54  * Local prototypes
  55  *****************************************************************************/
  56 static int Demux( demux_t *p_demux);
  57 static int Control( demux_t *p_demux, int i_query, va_list args );
  58 #if 0
  59 static void ShoutcastAdd( playlist_t *p_playlist, playlist_item_t* p_genre,
  60                           playlist_item_t *p_bitrate, playlist_item_t *p_item,
  61                           char *psz_genre, char *psz_bitrate );
  62 #endif
  63
  64 static int DemuxGenre( demux_t *p_demux );
  65 static int DemuxStation( demux_t *p_demux );
  66
  67 /*****************************************************************************
  68  * Import_Shoutcast: main import function
  69  *****************************************************************************/
  70 int E_(Import_Shoutcast)( vlc_object_t *p_this )
  71 {
  72     demux_t *p_demux = (demux_t *)p_this;
  73     demux_sys_t *p_sys;
  74
  75     char    *psz_ext;
  76
  77     psz_ext = strrchr ( p_demux->psz_path, '.' );
  78
  79     if( !p_demux->psz_demux || strcmp(p_demux->psz_demux, "shout-winamp") )
  80     {
  81         return VLC_EGENERIC;
  82     }
  83     msg_Dbg( p_demux, "using shoutcast playlist import");
  84
  85     p_demux->pf_control = Control;
  86     p_demux->pf_demux = Demux;
  87     p_demux->p_sys = p_sys = malloc( sizeof(demux_sys_t) );
  88     if( p_sys == NULL )
  89     {
  90         msg_Err( p_demux, "out of memory" );
  91         return VLC_ENOMEM;
  92     }
  93
  94     p_sys->p_playlist = NULL;
  95     p_sys->p_xml = NULL;
  96     p_sys->p_xml_reader = NULL;
  97
  98     return VLC_SUCCESS;
  99 }
 100
 101 /*****************************************************************************
 102  * Deactivate: frees unused data
 103  *****************************************************************************/
 104 void E_(Close_Shoutcast)( vlc_object_t *p_this )
 105 {
 106     demux_t *p_demux = (demux_t *)p_this;
 107     demux_sys_t *p_sys = p_demux->p_sys;
 108
 109     if( p_sys->p_playlist )
 110         vlc_object_release( p_sys->p_playlist );
 111     if( p_sys->p_xml_reader )
 112         xml_ReaderDelete( p_sys->p_xml, p_sys->p_xml_reader );
 113     if( p_sys->p_xml )
 114         xml_Delete( p_sys->p_xml );
 115     free( p_sys );
 116 }
 117
 118 static int Demux( demux_t *p_demux )
 119 {
 120     demux_sys_t *p_sys = p_demux->p_sys;
 121     playlist_t *p_playlist;
 122
 123     vlc_bool_t b_play;
 124
 125     xml_t *p_xml;
 126     xml_reader_t *p_xml_reader;
 127
 128     char *psz_eltname = NULL;
 129
 130
 131     p_playlist = (playlist_t *) vlc_object_find( p_demux, VLC_OBJECT_PLAYLIST,
 132                                                  FIND_ANYWHERE );
 133     if( !p_playlist )
 134     {
 135         msg_Err( p_demux, "can't find playlist" );
 136         return -1;
 137     }
 138     p_sys->p_playlist = p_playlist;
 139
 140     b_play = E_(FindItem)( p_demux, p_playlist, &p_sys->p_current );
 141
 142     msg_Warn( p_demux, "item: %s", p_sys->p_current->input.psz_name );
 143     playlist_ItemToNode( p_playlist, p_sys->p_current );
 144     p_sys->p_current->input.i_type = ITEM_TYPE_PLAYLIST;
 145
 146     p_xml = p_sys->p_xml = xml_Create( p_demux );
 147     if( !p_xml ) return -1;
 148
 149 /*    psz_eltname = stream_ReadLine( p_demux->s );
 150     if( psz_eltname ) free( psz_eltname );
 151     psz_eltname = 0;*/
 152
 153     p_xml_reader = xml_ReaderCreate( p_xml, p_demux->s );
 154     if( !p_xml_reader ) return -1;
 155     p_sys->p_xml_reader = p_xml_reader;
 156
 157     /* xml */
 158     /* check root node */
 159     if( xml_ReaderRead( p_xml_reader ) != 1 )
 160     {
 161         msg_Err( p_demux, "invalid file (no root node)" );
 162         return -1;
 163     }
 164
 165     if( xml_ReaderNodeType( p_xml_reader ) != XML_READER_STARTELEM ||
 166         ( psz_eltname = xml_ReaderName( p_xml_reader ) ) == NULL ||
 167         ( strcmp( psz_eltname, "genrelist" )
 168           && strcmp( psz_eltname, "stationlist" ) ) )
 169     {
 170         msg_Err( p_demux, "invalid root node %i, %s",
 171                  xml_ReaderNodeType( p_xml_reader ), psz_eltname );
 172         if( psz_eltname ) free( psz_eltname );
 173         return -1;
 174     }
 175
 176     if( !strcmp( psz_eltname, "genrelist" ) )
 177     {
 178         /* we're reading a genre list */
 179         if( DemuxGenre( p_demux ) ) return -1;
 180     }
 181     else
 182     {
 183         /* we're reading a station list */
 184         if( DemuxStation( p_demux ) ) return -1;
 185     }
 186     free( psz_eltname );
 187
 188     /* Go back and play the playlist */
 189     if( b_play && p_playlist->status.p_item &&
 190         p_playlist->status.p_item->i_children > 0 )
 191     {
 192         playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 193                           p_playlist->status.i_view,
 194                           p_playlist->status.p_item,
 195                           p_playlist->status.p_item->pp_children[0] );
 196     }
 197
 198     vlc_object_release( p_playlist );
 199     p_sys->p_playlist = NULL;
 200     return VLC_SUCCESS;
 201 }
 202
 203 #define GET_VALUE( a ) \
 204                         if( !strcmp( psz_attrname, #a ) ) \
 205                         { \
 206                             psz_ ## a = strdup( psz_attrvalue ); \
 207                         }
 208 /* <genrelist>
 209  *   <genre name="the name"></genre>
 210  *   ...
 211  * </genrelist>
 212  **/
 213 static int DemuxGenre( demux_t *p_demux )
 214 {
 215     demux_sys_t *p_sys = p_demux->p_sys;
 216     char *psz_name = NULL; /* genre name */
 217     char *psz_eltname = NULL; /* tag name */
 218
 219     while( xml_ReaderRead( p_sys->p_xml_reader ) == 1 )
 220     {
 221         int i_type;
 222
 223         // Get the node type
 224         i_type = xml_ReaderNodeType( p_sys->p_xml_reader );
 225         switch( i_type )
 226         {
 227             // Error
 228             case -1:
 229                 return -1;
 230                 break;
 231
 232             case XML_READER_STARTELEM:
 233                 // Read the element name
 234                 if( psz_eltname ) free( psz_eltname );
 235                 psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
 236                 if( !psz_eltname ) return -1;
 237
 238
 239                 if( !strcmp( psz_eltname, "genre" ) )
 240                 {
 241                     // Read the attributes
 242                     while( xml_ReaderNextAttr( p_sys->p_xml_reader ) == VLC_SUCCESS )
 243                     {
 244                         char *psz_attrname = xml_ReaderName( p_sys->p_xml_reader );
 245                         char *psz_attrvalue =
 246                             xml_ReaderValue( p_sys->p_xml_reader );
 247                         if( !psz_attrname || !psz_attrvalue ) return -1;
 248
 249                         GET_VALUE( name )
 250                         else
 251                         {
 252                             msg_Warn( p_demux,
 253                                       "unexpected attribure %s in element %s",
 254                                       psz_attrname,
 255                                       psz_eltname );
 256                         }
 257                         free( psz_attrname );
 258                         free( psz_attrvalue );
 259                     }
 260                 }
 261                 break;
 262
 263             case XML_READER_TEXT:
 264                 break;
 265
 266             // End element
 267             case XML_READER_ENDELEM:
 268                 // Read the element name
 269                 free( psz_eltname );
 270                 psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
 271                 if( !psz_eltname ) return -1;
 272                 if( !strcmp( psz_eltname, "genre" ) )
 273                 {
 274                     playlist_item_t *p_item;
 275                     char *psz_mrl = malloc( strlen( SHOUTCAST_BASE_URL )
 276                             + strlen( "?genre=" ) + strlen( psz_name ) + 1 );
 277                     sprintf( psz_mrl, SHOUTCAST_BASE_URL "?genre=%s",
 278                              psz_name );
 279                     p_item = playlist_ItemNew( p_sys->p_playlist, psz_mrl,
 280                                                psz_name );
 281                     free( psz_mrl );
 282                     playlist_NodeAddItem( p_sys->p_playlist, p_item,
 283                                           p_sys->p_current->pp_parents[0]->i_view,
 284                                           p_sys->p_current, PLAYLIST_APPEND,
 285                                           PLAYLIST_END );
 286
 287                     /* We need to declare the parents of the node as the
 288                      *                  * same of the parent's ones */
 289                     playlist_CopyParents( p_sys->p_current, p_item );
 290
 291                     vlc_input_item_CopyOptions( &p_sys->p_current->input,
 292                                                 &p_item->input );
 293
 294 #define FREE(a) if( a ) free( a ); a = NULL;
 295                     FREE( psz_name );
 296 #undef FREE
 297                 }
 298                 free( psz_eltname );
 299                 psz_eltname = strdup("");
 300
 301                 break;
 302         }
 303     }
 304     return 0;
 305 }
 306
 307 /* radio stations:
 308  * <stationlist>
 309  *   <tunein base="/sbin/tunein-station.pls"></tunein>
 310  *   <station name="the name"
 311  *            mt="mime type"
 312  *            id="the id"
 313  *            br="bit rate"
 314  *            genre="A big genre string"
 315  *            ct="current track name/author/..."
 316  *            lc="listener count"></station>
 317  * </stationlist>
 318  *
 319  * TV stations:
 320  * <stationlist>
 321  *   <tunein base="/sbin/tunein-station.pls"></tunein>
 322  *   <station name="the name"
 323  *            id="the id"
 324  *            br="bit rate"
 325  *            rt="rating"
 326  *            load="server load ?"
 327  *            ct="current track name/author/..."
 328  *            genre="A big genre string"
 329  *            lc="listener count"></station>
 330  * </stationlist>
 331  **/
 332 static int DemuxStation( demux_t *p_demux )
 333 {
 334     demux_sys_t *p_sys = p_demux->p_sys;
 335
 336     char *psz_base = NULL; /* */
 337
 338     char *psz_name = NULL; /* genre name */
 339     char *psz_mt = NULL; /* mime type */
 340     char *psz_id = NULL; /* id */
 341     char *psz_br = NULL; /* bit rate */
 342     char *psz_genre = NULL; /* genre */
 343     char *psz_ct = NULL; /* current track */
 344     char *psz_lc = NULL; /* listener count */
 345
 346     /* If these are set then it's *not* a radio but a TV */
 347     char *psz_rt = NULL; /* rating for shoutcast TV */
 348     char *psz_load = NULL; /* load for shoutcast TV */
 349
 350     char *psz_eltname = NULL; /* tag name */
 351
 352     while( xml_ReaderRead( p_sys->p_xml_reader ) == 1 )
 353     {
 354         int i_type;
 355
 356         // Get the node type
 357         i_type = xml_ReaderNodeType( p_sys->p_xml_reader );
 358         switch( i_type )
 359         {
 360             // Error
 361             case -1:
 362                 return -1;
 363                 break;
 364
 365             case XML_READER_STARTELEM:
 366                 // Read the element name
 367                 if( psz_eltname ) free( psz_eltname );
 368                 psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
 369                 if( !psz_eltname ) return -1;
 370
 371                 // Read the attributes
 372                 if( !strcmp( psz_eltname, "tunein" ) )
 373                 {
 374                     while( xml_ReaderNextAttr( p_sys->p_xml_reader ) == VLC_SUCCESS )
 375                     {
 376                         char *psz_attrname = xml_ReaderName( p_sys->p_xml_reader );
 377                         char *psz_attrvalue =
 378                             xml_ReaderValue( p_sys->p_xml_reader );
 379                         if( !psz_attrname || !psz_attrvalue ) return -1;
 380
 381                         GET_VALUE( base )
 382                         else
 383                         {
 384                             msg_Warn( p_demux,
 385                                       "unexpected attribure %s in element %s",
 386                                       psz_attrname,
 387                                       psz_eltname );
 388                         }
 389                         free( psz_attrname );
 390                         free( psz_attrvalue );
 391                     }
 392                 }
 393                 else if( !strcmp( psz_eltname, "station" ) )
 394                 {
 395                     while( xml_ReaderNextAttr( p_sys->p_xml_reader ) == VLC_SUCCESS )
 396                     {
 397                         char *psz_attrname = xml_ReaderName( p_sys->p_xml_reader );
 398                         char *psz_attrvalue =
 399                             xml_ReaderValue( p_sys->p_xml_reader );
 400                         if( !psz_attrname || !psz_attrvalue ) return -1;
 401
 402                         GET_VALUE( name )
 403                         else GET_VALUE( mt )
 404                         else GET_VALUE( id )
 405                         else GET_VALUE( br )
 406                         else GET_VALUE( genre )
 407                         else GET_VALUE( ct )
 408                         else GET_VALUE( lc )
 409                         else GET_VALUE( rt )
 410                         else GET_VALUE( load )
 411                         else
 412                         {
 413                             msg_Warn( p_demux,
 414                                       "unexpected attribure %s in element %s",
 415                                       psz_attrname,
 416                                       psz_eltname );
 417                         }
 418                         free( psz_attrname );
 419                         free( psz_attrvalue );
 420                     }
 421                 }
 422                 break;
 423
 424             case XML_READER_TEXT:
 425                 break;
 426
 427             // End element
 428             case XML_READER_ENDELEM:
 429                 // Read the element name
 430                 free( psz_eltname );
 431                 psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
 432                 if( !psz_eltname ) return -1;
 433                 if( !strcmp( psz_eltname, "station" ) &&
 434                     ( psz_base || ( psz_rt && psz_load ) ) )
 435                 {
 436                     playlist_item_t *p_item;
 437                     char *psz_mrl = NULL;
 438                     if( psz_rt || psz_load )
 439                     {
 440                         /* tv */
 441                         psz_mrl = malloc( strlen( SHOUTCAST_TV_TUNEIN_URL )
 442                                           + strlen( psz_id ) + 1 );
 443                         sprintf( psz_mrl, SHOUTCAST_TV_TUNEIN_URL "%s",
 444                                  psz_id );
 445                     }
 446                     else
 447                     {
 448                         /* radio */
 449                         psz_mrl = malloc( strlen( SHOUTCAST_TUNEIN_BASE_URL )
 450                             + strlen( psz_base ) + strlen( "?id=" )
 451                             + strlen( psz_id ) + 1 );
 452                         sprintf( psz_mrl, SHOUTCAST_TUNEIN_BASE_URL "%s?id=%s",
 453                              psz_base, psz_id );
 454                     }
 455                     msg_Warn( p_demux, "%s", psz_mrl );
 456                     p_item = playlist_ItemNew( p_sys->p_playlist, psz_mrl,
 457                                                psz_name );
 458                     free( psz_mrl );
 459
 460                     if( psz_mt )
 461                     {
 462                         vlc_input_item_AddInfo( &p_item->input,
 463                                                 _( "Shoutcast" ),
 464                                                 _( "Mime type" ),
 465                                                 "%s",
 466                                                 psz_mt );
 467                     }
 468                     else if( psz_br )
 469                     {
 470                         vlc_input_item_AddInfo( &p_item->input,
 471                                                 _( "Shoutcast" ),
 472                                                 _( "Bitrate" ),
 473                                                 "%s",
 474                                                 psz_br );
 475                     }
 476                     else if( psz_genre )
 477                     {
 478                         vlc_input_item_AddInfo( &p_item->input,
 479                                                 _(VLC_META_INFO_CAT),
 480                                                 _(VLC_META_GENRE),
 481                                                 "%s",
 482                                                 psz_genre );
 483                     }
 484                     else if( psz_ct )
 485                     {
 486                         vlc_input_item_AddInfo( &p_item->input,
 487                                                 _(VLC_META_INFO_CAT),
 488                                                 _(VLC_META_NOW_PLAYING),
 489                                                 "%s",
 490                                                 psz_ct );
 491                     }
 492                     else if( psz_lc )
 493                     {
 494                         vlc_input_item_AddInfo( &p_item->input,
 495                                                 _( "Shoutcast" ),
 496                                                 _( "Listeners" ),
 497                                                 "%s",
 498                                                 psz_lc );
 499                     }
 500                     else if( psz_rt )
 501                     {
 502                         vlc_input_item_AddInfo( &p_item->input,
 503                                                 _( "Shoutcast" ),
 504                                                 _( "Rating" ),
 505                                                 "%s",
 506                                                 psz_rt );
 507                     }
 508                     else if( psz_load )
 509                     {
 510                         vlc_input_item_AddInfo( &p_item->input,
 511                                                 _( "Shoutcast" ),
 512                                                 _( "Load" ),
 513                                                 "%s",
 514                                                 psz_load );
 515                     }
 516
 517                     playlist_NodeAddItem( p_sys->p_playlist, p_item,
 518                                           p_sys->p_current->pp_parents[0]->i_view,
 519                                           p_sys->p_current, PLAYLIST_APPEND,
 520                                           PLAYLIST_END );
 521
 522                     /* We need to declare the parents of the node as the
 523                      *                  * same of the parent's ones */
 524                     playlist_CopyParents( p_sys->p_current, p_item );
 525
 526                     vlc_input_item_CopyOptions( &p_sys->p_current->input,
 527                                                 &p_item->input );
 528
 529 #define FREE(a) if( a ) free( a ); a = NULL;
 530                     FREE( psz_name );
 531                     FREE( psz_mt )
 532                     FREE( psz_id )
 533                     FREE( psz_br )
 534                     FREE( psz_genre )
 535                     FREE( psz_ct )
 536                     FREE( psz_lc )
 537                     FREE( psz_rt )
 538 #undef FREE
 539                 }
 540                 free( psz_eltname );
 541                 psz_eltname = strdup("");
 542
 543                 break;
 544         }
 545     }
 546     return 0;
 547 }
 548
 549 static int Control( demux_t *p_demux, int i_query, va_list args )
 550 {
 551     return VLC_EGENERIC;
 552 }