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     vlc_bool_t b_adult;
  48 };
  49
  50 /* duplicate from modules/services_discovery/shout.c */
  51 #define SHOUTCAST_BASE_URL "http/shout-winamp://www.shoutcast.com/sbin/newxml.phtml"
  52 #define SHOUTCAST_TUNEIN_BASE_URL "http://www.shoutcast.com"
  53 #define SHOUTCAST_TV_TUNEIN_URL "http://www.shoutcast.com/sbin/tunein-tvstation.pls?id="
  54
  55 /*****************************************************************************
  56  * Local prototypes
  57  *****************************************************************************/
  58 static int Demux( demux_t *p_demux);
  59 static int Control( demux_t *p_demux, int i_query, va_list args );
  60
  61 static int DemuxGenre( demux_t *p_demux );
  62 static int DemuxStation( demux_t *p_demux );
  63
  64 /*****************************************************************************
  65  * Import_Shoutcast: main import function
  66  *****************************************************************************/
  67 int E_(Import_Shoutcast)( vlc_object_t *p_this )
  68 {
  69     demux_t *p_demux = (demux_t *)p_this;
  70     demux_sys_t *p_sys;
  71
  72     char    *psz_ext;
  73
  74     psz_ext = strrchr ( p_demux->psz_path, '.' );
  75
  76     if( !p_demux->psz_demux || strcmp(p_demux->psz_demux, "shout-winamp") )
  77     {
  78         return VLC_EGENERIC;
  79     }
  80     msg_Dbg( p_demux, "using shoutcast playlist import");
  81
  82     p_demux->pf_control = Control;
  83     p_demux->pf_demux = Demux;
  84     p_demux->p_sys = p_sys = malloc( sizeof(demux_sys_t) );
  85     if( p_sys == NULL )
  86     {
  87         msg_Err( p_demux, "out of memory" );
  88         return VLC_ENOMEM;
  89     }
  90
  91     p_sys->p_playlist = NULL;
  92     p_sys->p_xml = NULL;
  93     p_sys->p_xml_reader = NULL;
  94
  95     /* Do we want to list adult content ? */
  96     var_Create( p_demux, "shoutcast-show-adult",
  97                 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
  98     p_sys->b_adult = var_GetBool( p_demux, "shoutcast-show-adult" );
  99
 100     return VLC_SUCCESS;
 101 }
 102
 103 /*****************************************************************************
 104  * Deactivate: frees unused data
 105  *****************************************************************************/
 106 void E_(Close_Shoutcast)( vlc_object_t *p_this )
 107 {
 108     demux_t *p_demux = (demux_t *)p_this;
 109     demux_sys_t *p_sys = p_demux->p_sys;
 110
 111     if( p_sys->p_playlist )
 112         vlc_object_release( p_sys->p_playlist );
 113     if( p_sys->p_xml_reader )
 114         xml_ReaderDelete( p_sys->p_xml, p_sys->p_xml_reader );
 115     if( p_sys->p_xml )
 116         xml_Delete( p_sys->p_xml );
 117     free( p_sys );
 118 }
 119
 120 static int Demux( demux_t *p_demux )
 121 {
 122 #if 0
 123     demux_sys_t *p_sys = p_demux->p_sys;
 124     playlist_t *p_playlist;
 125
 126     vlc_bool_t b_play;
 127
 128     xml_t *p_xml;
 129     xml_reader_t *p_xml_reader;
 130
 131     char *psz_eltname = NULL;
 132
 133
 134     p_playlist = (playlist_t *) vlc_object_find( p_demux, VLC_OBJECT_PLAYLIST,
 135                                                  FIND_ANYWHERE );
 136     if( !p_playlist )
 137     {
 138         msg_Err( p_demux, "can't find playlist" );
 139         return -1;
 140     }
 141     p_sys->p_playlist = p_playlist;
 142
 143     b_play = E_(FindItem)( p_demux, p_playlist, &p_sys->p_current );
 144
 145     msg_Warn( p_demux, "item: %s", p_sys->p_current->input.psz_name );
 146     playlist_ItemToNode( p_playlist, p_sys->p_current );
 147     p_sys->p_current->input.i_type = ITEM_TYPE_PLAYLIST;
 148
 149     p_xml = p_sys->p_xml = xml_Create( p_demux );
 150     if( !p_xml ) return -1;
 151
 152     p_xml_reader = xml_ReaderCreate( p_xml, p_demux->s );
 153     if( !p_xml_reader ) return -1;
 154     p_sys->p_xml_reader = p_xml_reader;
 155
 156     /* xml */
 157     /* check root node */
 158     if( xml_ReaderRead( p_xml_reader ) != 1 )
 159     {
 160         msg_Err( p_demux, "invalid file (no root node)" );
 161         return -1;
 162     }
 163
 164     if( xml_ReaderNodeType( p_xml_reader ) != XML_READER_STARTELEM ||
 165         ( psz_eltname = xml_ReaderName( p_xml_reader ) ) == NULL ||
 166         ( strcmp( psz_eltname, "genrelist" )
 167           && strcmp( psz_eltname, "stationlist" ) ) )
 168     {
 169         msg_Err( p_demux, "invalid root node %i, %s",
 170                  xml_ReaderNodeType( p_xml_reader ), psz_eltname );
 171         if( psz_eltname ) free( psz_eltname );
 172         return -1;
 173     }
 174
 175     if( !strcmp( psz_eltname, "genrelist" ) )
 176     {
 177         /* we're reading a genre list */
 178         free( psz_eltname );
 179         if( DemuxGenre( p_demux ) ) return -1;
 180     }
 181     else
 182     {
 183         /* we're reading a station list */
 184         free( psz_eltname );
 185         if( DemuxStation( p_demux ) ) return -1;
 186     }
 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 #endif
 201     return VLC_SUCCESS;
 202 }
 203
 204 #define GET_VALUE( a ) \
 205                         if( !strcmp( psz_attrname, #a ) ) \
 206                         { \
 207                             psz_ ## a = strdup( psz_attrvalue ); \
 208                         }
 209 /* <genrelist>
 210  *   <genre name="the name"></genre>
 211  *   ...
 212  * </genrelist>
 213  **/
 214 static int DemuxGenre( demux_t *p_demux )
 215 {
 216 #if 0
 217     demux_sys_t *p_sys = p_demux->p_sys;
 218     char *psz_name = NULL; /* genre name */
 219     char *psz_eltname = NULL; /* tag name */
 220
 221 #define FREE(a) if( a ) free( a ); a = NULL;
 222     while( xml_ReaderRead( p_sys->p_xml_reader ) == 1 )
 223     {
 224         int i_type;
 225
 226         // Get the node type
 227         i_type = xml_ReaderNodeType( p_sys->p_xml_reader );
 228         switch( i_type )
 229         {
 230             // Error
 231             case -1:
 232                 return -1;
 233                 break;
 234
 235             case XML_READER_STARTELEM:
 236                 // Read the element name
 237                 psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
 238                 if( !psz_eltname ) return -1;
 239
 240
 241                 if( !strcmp( psz_eltname, "genre" ) )
 242                 {
 243                     // Read the attributes
 244                     while( xml_ReaderNextAttr( p_sys->p_xml_reader ) == VLC_SUCCESS )
 245                     {
 246                         char *psz_attrname = xml_ReaderName( p_sys->p_xml_reader );
 247                         char *psz_attrvalue =
 248                             xml_ReaderValue( p_sys->p_xml_reader );
 249                         if( !psz_attrname || !psz_attrvalue )
 250                         {
 251                             FREE(psz_attrname);
 252                             FREE(psz_attrvalue);
 253                             free(psz_eltname);
 254                             /*FIXME: isn't return a bit too much. what about break*/
 255                             return -1;
 256                         }
 257
 258                         GET_VALUE( name )
 259                         else
 260                         {
 261                             msg_Warn( p_demux,
 262                                       "unexpected attribure %s in element %s",
 263                                       psz_attrname,
 264                                       psz_eltname );
 265                         }
 266                         free( psz_attrname );
 267                         free( psz_attrvalue );
 268                     }
 269                 }
 270                 free( psz_eltname ); psz_eltname = NULL;
 271                 break;
 272
 273             case XML_READER_TEXT:
 274                 break;
 275
 276             // End element
 277             case XML_READER_ENDELEM:
 278                 // Read the element name
 279                 psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
 280                 if( !psz_eltname ) return -1;
 281                 if( !strcmp( psz_eltname, "genre" ) )
 282                 {
 283                     playlist_item_t *p_item;
 284                     char *psz_mrl = malloc( strlen( SHOUTCAST_BASE_URL )
 285                             + strlen( "?genre=" ) + strlen( psz_name ) + 1 );
 286                     sprintf( psz_mrl, SHOUTCAST_BASE_URL "?genre=%s",
 287                              psz_name );
 288                     p_item = playlist_ItemNew( p_sys->p_playlist, psz_mrl,
 289                                                psz_name );
 290                     free( psz_mrl );
 291                     playlist_NodeAddItem( p_sys->p_playlist, p_item,
 292                                           p_sys->p_current->pp_parents[0]->i_view,
 293                                           p_sys->p_current, PLAYLIST_APPEND,
 294                                           PLAYLIST_END );
 295
 296                     /* We need to declare the parents of the node as the
 297                      *                  * same of the parent's ones */
 298                     playlist_CopyParents( p_sys->p_current, p_item );
 299
 300                     vlc_input_item_CopyOptions( &p_sys->p_current->input,
 301                                                 &p_item->input );
 302
 303                     FREE( psz_name );
 304                 }
 305                 FREE( psz_eltname );
 306                 break;
 307         }
 308     }
 309 #endif
 310     return 0;
 311 }
 312
 313 /* radio stations:
 314  * <stationlist>
 315  *   <tunein base="/sbin/tunein-station.pls"></tunein>
 316  *   <station name="the name"
 317  *            mt="mime type"
 318  *            id="the id"
 319  *            br="bit rate"
 320  *            genre="A big genre string"
 321  *            ct="current track name/author/..."
 322  *            lc="listener count"></station>
 323  * </stationlist>
 324  *
 325  * TV stations:
 326  * <stationlist>
 327  *   <tunein base="/sbin/tunein-station.pls"></tunein>
 328  *   <station name="the name"
 329  *            id="the id"
 330  *            br="bit rate"
 331  *            rt="rating"
 332  *            load="server load ?"
 333  *            ct="current track name/author/..."
 334  *            genre="A big genre string"
 335  *            lc="listener count"></station>
 336  * </stationlist>
 337  **/
 338 static int DemuxStation( demux_t *p_demux )
 339 {
 340 #if 0
 341     demux_sys_t *p_sys = p_demux->p_sys;
 342
 343     char *psz_base = NULL; /* */
 344
 345     char *psz_name = NULL; /* genre name */
 346     char *psz_mt = NULL; /* mime type */
 347     char *psz_id = NULL; /* id */
 348     char *psz_br = NULL; /* bit rate */
 349     char *psz_genre = NULL; /* genre */
 350     char *psz_ct = NULL; /* current track */
 351     char *psz_lc = NULL; /* listener count */
 352
 353     /* If these are set then it's *not* a radio but a TV */
 354     char *psz_rt = NULL; /* rating for shoutcast TV */
 355     char *psz_load = NULL; /* load for shoutcast TV */
 356
 357     char *psz_eltname = NULL; /* tag name */
 358
 359     while( xml_ReaderRead( p_sys->p_xml_reader ) == 1 )
 360     {
 361         int i_type;
 362
 363         // Get the node type
 364         i_type = xml_ReaderNodeType( p_sys->p_xml_reader );
 365         switch( i_type )
 366         {
 367             // Error
 368             case -1:
 369                 return -1;
 370                 break;
 371
 372             case XML_READER_STARTELEM:
 373                 // Read the element name
 374                 psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
 375                 if( !psz_eltname ) return -1;
 376
 377                 // Read the attributes
 378                 if( !strcmp( psz_eltname, "tunein" ) )
 379                 {
 380                     while( xml_ReaderNextAttr( p_sys->p_xml_reader ) == VLC_SUCCESS )
 381                     {
 382                         char *psz_attrname = xml_ReaderName( p_sys->p_xml_reader );
 383                         char *psz_attrvalue =
 384                             xml_ReaderValue( p_sys->p_xml_reader );
 385                         if( !psz_attrname || !psz_attrvalue )
 386                         {
 387                             free(psz_eltname);
 388                             FREE(psz_attrname);
 389                             FREE(psz_attrvalue);
 390                             return -1;
 391                         }
 392
 393                         GET_VALUE( base )
 394                         else
 395                         {
 396                             msg_Warn( p_demux,
 397                                       "unexpected attribure %s in element %s",
 398                                       psz_attrname,
 399                                       psz_eltname );
 400                         }
 401                         free( psz_attrname );
 402                         free( psz_attrvalue );
 403                     }
 404                 }
 405                 else if( !strcmp( psz_eltname, "station" ) )
 406                 {
 407                     while( xml_ReaderNextAttr( p_sys->p_xml_reader ) == VLC_SUCCESS )
 408                     {
 409                         char *psz_attrname = xml_ReaderName( p_sys->p_xml_reader );
 410                         char *psz_attrvalue =
 411                             xml_ReaderValue( p_sys->p_xml_reader );
 412                         if( !psz_attrname || !psz_attrvalue )
 413                         {
 414                             free(psz_eltname);
 415                             FREE(psz_attrname);
 416                             FREE(psz_attrvalue);
 417                             return -1;
 418                         }
 419
 420                         GET_VALUE( name )
 421                         else GET_VALUE( mt )
 422                         else GET_VALUE( id )
 423                         else GET_VALUE( br )
 424                         else GET_VALUE( genre )
 425                         else GET_VALUE( ct )
 426                         else GET_VALUE( lc )
 427                         else GET_VALUE( rt )
 428                         else GET_VALUE( load )
 429                         else
 430                         {
 431                             msg_Warn( p_demux,
 432                                       "unexpected attribure %s in element %s",
 433                                       psz_attrname,
 434                                       psz_eltname );
 435                         }
 436                         free( psz_attrname );
 437                         free( psz_attrvalue );
 438                     }
 439                 }
 440                 free(psz_eltname);
 441                 break;
 442
 443             case XML_READER_TEXT:
 444                 break;
 445
 446             // End element
 447             case XML_READER_ENDELEM:
 448                 // Read the element name
 449                 psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
 450                 if( !psz_eltname ) return -1;
 451                 if( !strcmp( psz_eltname, "station" ) &&
 452                     ( psz_base || ( psz_rt && psz_load &&
 453                     ( p_sys->b_adult || strcmp( psz_rt, "NC17" ) ) ) ) )
 454                 {
 455                     playlist_item_t *p_item;
 456                     char *psz_mrl = NULL;
 457                     if( psz_rt || psz_load )
 458                     {
 459                         /* tv */
 460                         psz_mrl = malloc( strlen( SHOUTCAST_TV_TUNEIN_URL )
 461                                           + strlen( psz_id ) + 1 );
 462                         sprintf( psz_mrl, SHOUTCAST_TV_TUNEIN_URL "%s",
 463                                  psz_id );
 464                     }
 465                     else
 466                     {
 467                         /* radio */
 468                         psz_mrl = malloc( strlen( SHOUTCAST_TUNEIN_BASE_URL )
 469                             + strlen( psz_base ) + strlen( "?id=" )
 470                             + strlen( psz_id ) + 1 );
 471                         sprintf( psz_mrl, SHOUTCAST_TUNEIN_BASE_URL "%s?id=%s",
 472                              psz_base, psz_id );
 473                     }
 474                     p_item = playlist_ItemNew( p_sys->p_playlist, psz_mrl,
 475                                                psz_name );
 476                     free( psz_mrl );
 477
 478                     if( psz_mt )
 479                     {
 480                         vlc_input_item_AddInfo( &p_item->input,
 481                                                 _( "Shoutcast" ),
 482                                                 _( "Mime type" ),
 483                                                 "%s",
 484                                                 psz_mt );
 485                     }
 486                     if( psz_br )
 487                     {
 488                         vlc_input_item_AddInfo( &p_item->input,
 489                                                 _( "Shoutcast" ),
 490                                                 _( "Bitrate" ),
 491                                                 "%s",
 492                                                 psz_br );
 493                     }
 494                     if( psz_genre )
 495                     {
 496                         vlc_input_item_AddInfo( &p_item->input,
 497                                                 _(VLC_META_INFO_CAT),
 498                                                 _(VLC_META_GENRE),
 499                                                 "%s",
 500                                                 psz_genre );
 501                     }
 502                     if( psz_ct )
 503                     {
 504                         vlc_input_item_AddInfo( &p_item->input,
 505                                                 _(VLC_META_INFO_CAT),
 506                                                 _(VLC_META_NOW_PLAYING),
 507                                                 "%s",
 508                                                 psz_ct );
 509                     }
 510                     if( psz_lc )
 511                     {
 512                         vlc_input_item_AddInfo( &p_item->input,
 513                                                 _( "Shoutcast" ),
 514                                                 _( "Listeners" ),
 515                                                 "%s",
 516                                                 psz_lc );
 517                     }
 518                     if( psz_rt )
 519                     {
 520                         vlc_input_item_AddInfo( &p_item->input,
 521                                                 _(VLC_META_INFO_CAT),
 522                                                 _(VLC_META_RATING),
 523                                                 "%s",
 524                                                 psz_rt );
 525                     }
 526                     if( psz_load )
 527                     {
 528                         vlc_input_item_AddInfo( &p_item->input,
 529                                                 _( "Shoutcast" ),
 530                                                 _( "Load" ),
 531                                                 "%s",
 532                                                 psz_load );
 533                     }
 534
 535                     playlist_NodeAddItem( p_sys->p_playlist, p_item,
 536                                           p_sys->p_current->pp_parents[0]->i_view,
 537                                           p_sys->p_current, PLAYLIST_APPEND,
 538                                           PLAYLIST_END );
 539
 540                     /* We need to declare the parents of the node as the
 541                      *                  * same of the parent's ones */
 542                     playlist_CopyParents( p_sys->p_current, p_item );
 543
 544                     vlc_input_item_CopyOptions( &p_sys->p_current->input,
 545                                                 &p_item->input );
 546
 547                     FREE( psz_name );
 548                     FREE( psz_mt )
 549                     FREE( psz_id )
 550                     FREE( psz_br )
 551                     FREE( psz_genre )
 552                     FREE( psz_ct )
 553                     FREE( psz_lc )
 554                     FREE( psz_rt )
 555                 }
 556                 free( psz_eltname );
 557                 break;
 558         }
 559     }
 560 #endif
 561     return 0;
 562 }
 563 #undef FREE
 564
 565 static int Control( demux_t *p_demux, int i_query, va_list args )
 566 {
 567     return VLC_EGENERIC;
 568 }