git.sesse.net Git - vlc/blob - src/playlist/playlist.c

   1 /*****************************************************************************
   2  * playlist.c : Playlist management functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2001 VideoLAN
   5  * $Id: playlist.c,v 1.55 2003/09/22 14:40:12 zorglub Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23 #include <stdlib.h>                                      /* free(), strtol() */
  24 #include <stdio.h>                                              /* sprintf() */
  25 #include <string.h>                                            /* strerror() */
  26
  27 #include <vlc/vlc.h>
  28 #include <vlc/vout.h>
  29 #include <vlc/sout.h>
  30
  31 #include "stream_control.h"
  32 #include "input_ext-intf.h"
  33
  34 #include "vlc_playlist.h"
  35
  36 #define PLAYLIST_FILE_HEADER_0_5  "# vlc playlist file version 0.5"
  37
  38 /*****************************************************************************
  39  * Local prototypes
  40  *****************************************************************************/
  41 static void RunThread ( playlist_t * );
  42 static void SkipItem  ( playlist_t *, int );
  43 static void PlayItem  ( playlist_t * );
  44
  45 static void Poubellize ( playlist_t *, input_thread_t * );
  46
  47 /**
  48  * Create playlist
  49  *
  50  * Create a playlist structure.
  51  * \param p_parent the vlc object that is to be the parent of this playlist
  52  * \return a pointer to the created playlist, or NULL on error
  53  */
  54 playlist_t * __playlist_Create ( vlc_object_t *p_parent )
  55 {
  56     playlist_t *p_playlist;
  57     vlc_value_t     val;
  58
  59     /* Allocate structure */
  60     p_playlist = vlc_object_create( p_parent, VLC_OBJECT_PLAYLIST );
  61     if( !p_playlist )
  62     {
  63         msg_Err( p_parent, "out of memory" );
  64         return NULL;
  65     }
  66
  67     var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
  68     val.b_bool = VLC_TRUE;
  69     var_Set( p_playlist, "intf-change", val );
  70
  71     var_Create( p_playlist, "intf-popupmenu", VLC_VAR_BOOL );
  72
  73     var_Create( p_playlist, "intf-show", VLC_VAR_BOOL );
  74     val.b_bool = VLC_TRUE;
  75     var_Set( p_playlist, "intf-show", val );
  76
  77     var_Create( p_playlist, "random", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
  78     var_Create( p_playlist, "repeat", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
  79     var_Create( p_playlist, "loop", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
  80
  81     p_playlist->p_input = NULL;
  82     p_playlist->i_status = PLAYLIST_STOPPED;
  83     p_playlist->i_index = -1;
  84     p_playlist->i_size = 0;
  85     p_playlist->pp_items = NULL;
  86
  87     if( vlc_thread_create( p_playlist, "playlist", RunThread,
  88                            VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
  89     {
  90         msg_Err( p_playlist, "cannot spawn playlist thread" );
  91         vlc_object_destroy( p_playlist );
  92         return NULL;
  93     }
  94
  95     /* The object has been initialized, now attach it */
  96     vlc_object_attach( p_playlist, p_parent );
  97
  98     return p_playlist;
  99 }
 100
 101 /**
 102  * Destroy the playlist.
 103  *
 104  * Delete all items in the playlist and free the playlist structure.
 105  * \param p_playlist the playlist structure to destroy
 106  */
 107 void playlist_Destroy( playlist_t * p_playlist )
 108 {
 109     p_playlist->b_die = 1;
 110
 111     vlc_thread_join( p_playlist );
 112
 113     var_Destroy( p_playlist, "intf-change" );
 114
 115     vlc_object_destroy( p_playlist );
 116 }
 117
 118 /**
 119  * Add an MRL to the playlist. This is a simplified version of
 120  * playlist_AddExt inculded for convenince. It equals calling playlist_AddExt
 121  * with psz_name == psz_target and i_duration == -1
 122  */
 123
 124 int playlist_Add( playlist_t *p_playlist, const char *psz_target,
 125                   const char **ppsz_options, int i_options,
 126                   int i_mode, int i_pos )
 127 {
 128     return playlist_AddExt( p_playlist, psz_target, psz_target, -1,
 129                             ppsz_options, i_options, i_mode, i_pos );
 130 }
 131
 132 /**
 133  * Add a MRL into the playlist.
 134  *
 135  * \param p_playlist the playlist to add into
 136  * \param psz_uri the mrl to add to the playlist
 137  * \param psz_name a text giving a name or description of this item
 138  * \param i_duration a hint about the duration of this item, in miliseconds, or
 139  *        -1 if unknown.
 140  * \param ppsz_options array of options
 141  * \param i_options number of items in ppsz_options
 142  * \param i_mode the mode used when adding
 143  * \param i_pos the position in the playlist where to add. If this is
 144  *        PLAYLIST_END the item will be added at the end of the playlist
 145  *        regardless of it's size
 146  * \return always returns 0
 147 */
 148 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 149                      const char * psz_name, mtime_t i_duration,
 150                      const char **ppsz_options, int i_options, int i_mode,
 151                      int i_pos )
 152 {
 153     playlist_item_t * p_item;
 154
 155     p_item = malloc( sizeof( playlist_item_t ) );
 156     if( p_item == NULL )
 157     {
 158         msg_Err( p_playlist, "out of memory" );
 159     }
 160
 161     p_item->psz_name = strdup( psz_name );
 162     p_item->psz_uri  = strdup( psz_uri );
 163     p_item->i_duration = i_duration;
 164     p_item->i_type = 0;
 165     p_item->i_status = 0;
 166     p_item->b_autodeletion = VLC_FALSE;
 167
 168     p_item->ppsz_options = NULL;
 169     p_item->i_options = i_options;
 170
 171     if( i_options )
 172     {
 173         int i;
 174
 175         p_item->ppsz_options = (char **)malloc( i_options * sizeof(char *) );
 176         for( i = 0; i < i_options; i++ )
 177             p_item->ppsz_options[i] = strdup( ppsz_options[i] );
 178
 179     }
 180
 181     return playlist_AddItem( p_playlist, p_item, i_mode, i_pos );
 182 }
 183
 184 /**
 185  * Add a playlist item into a playlist
 186  *
 187  * \param p_playlist the playlist to insert into
 188  * \param p_item the playlist item to insert
 189  * \param i_mode the mode used when adding
 190  * \param i_pos the possition in the playlist where to add. If this is
 191  *        PLAYLIST_END the item will be added at the end of the playlist
 192  *        regardless of it's size
 193  * \return always returns 0
 194 */
 195 int playlist_AddItem( playlist_t *p_playlist, playlist_item_t * p_item,
 196                 int i_mode, int i_pos)
 197 {
 198     vlc_value_t     val;
 199
 200     vlc_mutex_lock( &p_playlist->object_lock );
 201
 202     /*
 203      * CHECK_INSERT : checks if the item is already enqued before
 204      * enqueing it
 205      */
 206     if ( i_mode & PLAYLIST_CHECK_INSERT )
 207     {
 208          int j;
 209
 210          if ( p_playlist->pp_items )
 211          {
 212              for ( j = 0; j < p_playlist->i_size; j++ )
 213              {
 214                  if ( !strcmp( p_playlist->pp_items[j]->psz_uri, p_item->psz_uri ) )
 215                  {
 216                       if( p_item->psz_name )
 217                       {
 218                           free( p_item->psz_name );
 219                       }
 220                       if( p_item->psz_uri )
 221                       {
 222                           free( p_item->psz_uri );
 223                       }
 224                       free( p_item );
 225                       vlc_mutex_unlock( &p_playlist->object_lock );
 226                       return 0;
 227                  }
 228              }
 229          }
 230          i_mode &= ~PLAYLIST_CHECK_INSERT;
 231          i_mode |= PLAYLIST_APPEND;
 232     }
 233
 234
 235     msg_Dbg( p_playlist, "adding playlist item « %s » ( %s )", p_item->psz_name, p_item->psz_uri);
 236
 237     /* Create the new playlist item */
 238
 239
 240     /* Do a few boundary checks and allocate space for the item */
 241     if( i_pos == PLAYLIST_END )
 242     {
 243         if( i_mode & PLAYLIST_INSERT )
 244         {
 245             i_mode &= ~PLAYLIST_INSERT;
 246             i_mode |= PLAYLIST_APPEND;
 247         }
 248
 249         i_pos = p_playlist->i_size - 1;
 250     }
 251
 252     if( !(i_mode & PLAYLIST_REPLACE)
 253          || i_pos < 0 || i_pos >= p_playlist->i_size )
 254     {
 255         /* Additional boundary checks */
 256         if( i_mode & PLAYLIST_APPEND )
 257         {
 258             i_pos++;
 259         }
 260
 261         if( i_pos < 0 )
 262         {
 263             i_pos = 0;
 264         }
 265         else if( i_pos > p_playlist->i_size )
 266         {
 267             i_pos = p_playlist->i_size;
 268         }
 269
 270         INSERT_ELEM( p_playlist->pp_items,
 271                      p_playlist->i_size,
 272                      i_pos,
 273                      p_item );
 274
 275         if( p_playlist->i_index >= i_pos )
 276         {
 277             p_playlist->i_index++;
 278         }
 279     }
 280     else
 281     {
 282         /* i_mode == PLAYLIST_REPLACE and 0 <= i_pos < p_playlist->i_size */
 283         if( p_playlist->pp_items[i_pos]->psz_name )
 284         {
 285             free( p_playlist->pp_items[i_pos]->psz_name );
 286         }
 287         if( p_playlist->pp_items[i_pos]->psz_uri )
 288         {
 289             free( p_playlist->pp_items[i_pos]->psz_uri );
 290         }
 291         /* XXX: what if the item is still in use? */
 292         free( p_playlist->pp_items[i_pos] );
 293         p_playlist->pp_items[i_pos] = p_item;
 294     }
 295
 296     if( i_mode & PLAYLIST_GO )
 297     {
 298         p_playlist->i_index = i_pos;
 299         if( p_playlist->p_input )
 300         {
 301             input_StopThread( p_playlist->p_input );
 302         }
 303         p_playlist->i_status = PLAYLIST_RUNNING;
 304     }
 305
 306     vlc_mutex_unlock( &p_playlist->object_lock );
 307
 308     val.b_bool = VLC_TRUE;
 309     var_Set( p_playlist, "intf-change", val );
 310
 311     return 0;
 312 }
 313
 314 /**
 315  * delete an item from a playlist.
 316  *
 317  * \param p_playlist the playlist to remove from.
 318  * \param i_pos the position of the item to remove
 319  * \return returns 0
 320  */
 321 int playlist_Delete( playlist_t * p_playlist, int i_pos )
 322 {
 323     vlc_value_t     val;
 324     vlc_mutex_lock( &p_playlist->object_lock );
 325
 326     if( i_pos >= 0 && i_pos < p_playlist->i_size )
 327     {
 328         msg_Dbg( p_playlist, "deleting playlist item « %s »",
 329                              p_playlist->pp_items[i_pos]->psz_name );
 330
 331         if( p_playlist->pp_items[i_pos]->psz_name )
 332         {
 333             free( p_playlist->pp_items[i_pos]->psz_name );
 334         }
 335         if( p_playlist->pp_items[i_pos]->psz_uri )
 336         {
 337             free( p_playlist->pp_items[i_pos]->psz_uri );
 338         }
 339         if( p_playlist->pp_items[i_pos]->i_options )
 340         {
 341             int i;
 342
 343             for( i = 0; i < p_playlist->pp_items[i_pos]->i_options; i++ )
 344                 free( p_playlist->pp_items[i_pos]->ppsz_options[i] );
 345
 346             free( p_playlist->pp_items[i_pos]->ppsz_options );
 347         }
 348
 349         /* XXX: what if the item is still in use? */
 350         free( p_playlist->pp_items[i_pos] );
 351
 352         if( i_pos <= p_playlist->i_index )
 353         {
 354             p_playlist->i_index--;
 355         }
 356
 357         /* Renumber the playlist */
 358         REMOVE_ELEM( p_playlist->pp_items,
 359                      p_playlist->i_size,
 360                      i_pos );
 361     }
 362
 363     vlc_mutex_unlock( &p_playlist->object_lock );
 364
 365     val.b_bool = VLC_TRUE;
 366     var_Set( p_playlist, "intf-change", val );
 367
 368     return 0;
 369 }
 370
 371
 372 /**
 373  * Sort the playlist
 374  *
 375  */
 376 int playlist_Sort( playlist_t * p_playlist , int i_type )
 377 {
 378     int i , i_small , i_position;
 379     playlist_item_t *p_temp;
 380
 381     vlc_mutex_lock( &p_playlist->object_lock );
 382
 383     for( i_position = 0; i_position <= p_playlist->i_size -1 ; i_position ++ )
 384     {
 385         i_small  = i_position;
 386         for( i = i_position + 1 ; i<  p_playlist->i_size ; i++)
 387         {
 388             int i_test;
 389
 390             i_test = strcasecmp( p_playlist->pp_items[i]->psz_name,
 391                                  p_playlist->pp_items[i_small]->psz_name );
 392
 393             if( ( i_type == SORT_NORMAL  && i_test < 0 ) ||
 394                 ( i_type == SORT_REVERSE && i_test > 0 ) )
 395             {
 396                 i_small = i;
 397             }
 398
 399             p_temp = p_playlist->pp_items[i_position];
 400             p_playlist->pp_items[i_position] = p_playlist->pp_items[i_small];
 401             p_playlist->pp_items[i_small] = p_temp;
 402         }
 403     }
 404     vlc_mutex_unlock( &p_playlist->object_lock );
 405
 406     return 0;
 407 }
 408
 409 /**
 410  * Move an item in a playlist
 411  *
 412  * Move the item in the playlist with position i_pos before the current item
 413  * at position i_newpos.
 414  * \param p_playlist the playlist to move items in
 415  * \param i_pos the position of the item to move
 416  * \param i_newpos the position of the item that will be behind the moved item
 417  *        after the move
 418  * \return returns 0
 419  */
 420 int playlist_Move( playlist_t * p_playlist, int i_pos, int i_newpos)
 421 {
 422     vlc_value_t     val;
 423     vlc_mutex_lock( &p_playlist->object_lock );
 424
 425     /* take into account that our own row disappears. */
 426     if ( i_pos < i_newpos ) i_newpos--;
 427
 428     if( i_pos >= 0 && i_newpos >=0 && i_pos <= p_playlist->i_size
 429                      && i_newpos <= p_playlist->i_size )
 430     {
 431         playlist_item_t * temp;
 432
 433         msg_Dbg( p_playlist, "moving playlist item « %s »",
 434                              p_playlist->pp_items[i_pos]->psz_name );
 435
 436         if( i_pos == p_playlist->i_index )
 437         {
 438             p_playlist->i_index = i_newpos;
 439         }
 440         else if( i_pos > p_playlist->i_index && i_newpos <= p_playlist->i_index )
 441         {
 442             p_playlist->i_index++;
 443         }
 444         else if( i_pos < p_playlist->i_index && i_newpos >= p_playlist->i_index )
 445         {
 446             p_playlist->i_index--;
 447         }
 448
 449         if ( i_pos < i_newpos )
 450         {
 451             temp = p_playlist->pp_items[i_pos];
 452             while ( i_pos < i_newpos )
 453             {
 454                 p_playlist->pp_items[i_pos] = p_playlist->pp_items[i_pos+1];
 455                 i_pos++;
 456             }
 457             p_playlist->pp_items[i_newpos] = temp;
 458         }
 459         else if ( i_pos > i_newpos )
 460         {
 461             temp = p_playlist->pp_items[i_pos];
 462             while ( i_pos > i_newpos )
 463             {
 464                 p_playlist->pp_items[i_pos] = p_playlist->pp_items[i_pos-1];
 465                 i_pos--;
 466             }
 467             p_playlist->pp_items[i_newpos] = temp;
 468         }
 469     }
 470
 471     vlc_mutex_unlock( &p_playlist->object_lock );
 472
 473     val.b_bool = VLC_TRUE;
 474     var_Set( p_playlist, "intf-change", val );
 475
 476     return 0;
 477 }
 478
 479 /**
 480  * Do a playlist action
 481  *
 482  * \param p_playlist the playlist to do the command on
 483  * \param i_command the command to do
 484  * \param i_arg the argument to the command. See playlist_command_t for details
 485  */
 486  void playlist_Command( playlist_t * p_playlist, playlist_command_t i_command,
 487                        int i_arg )
 488 {
 489     vlc_value_t val;
 490
 491     vlc_mutex_lock( &p_playlist->object_lock );
 492
 493     switch( i_command )
 494     {
 495     case PLAYLIST_STOP:
 496         p_playlist->i_status = PLAYLIST_STOPPED;
 497         if( p_playlist->p_input )
 498         {
 499             input_StopThread( p_playlist->p_input );
 500         }
 501         break;
 502
 503     case PLAYLIST_PLAY:
 504         p_playlist->i_status = PLAYLIST_RUNNING;
 505         if( !p_playlist->p_input )
 506         {
 507             PlayItem( p_playlist );
 508         }
 509         if( p_playlist->p_input )
 510         {
 511             val.i_int = PLAYING_S;
 512             var_Set( p_playlist->p_input, "state", val );
 513         }
 514         break;
 515
 516     case PLAYLIST_PAUSE:
 517         p_playlist->i_status = PLAYLIST_PAUSED;
 518         if( p_playlist->p_input )
 519         {
 520             val.i_int = PAUSE_S;
 521             var_Set( p_playlist->p_input, "state", val );
 522         }
 523         break;
 524
 525     case PLAYLIST_SKIP:
 526         p_playlist->i_status = PLAYLIST_STOPPED;
 527         SkipItem( p_playlist, i_arg );
 528         if( p_playlist->p_input )
 529         {
 530             input_StopThread( p_playlist->p_input );
 531         }
 532         p_playlist->i_status = PLAYLIST_RUNNING;
 533         break;
 534
 535     case PLAYLIST_GOTO:
 536         if( i_arg >= 0 && i_arg < p_playlist->i_size )
 537         {
 538             p_playlist->i_index = i_arg;
 539             if( p_playlist->p_input )
 540             {
 541                 input_StopThread( p_playlist->p_input );
 542             }
 543             p_playlist->i_status = PLAYLIST_RUNNING;
 544         }
 545         break;
 546
 547     default:
 548         msg_Err( p_playlist, "unknown playlist command" );
 549         break;
 550     }
 551
 552     vlc_mutex_unlock( &p_playlist->object_lock );
 553
 554     return;
 555 }
 556 /* Following functions are local */
 557
 558 static void ObjectGarbageCollector( playlist_t *p_playlist,
 559                                     int i_type,
 560                                     vlc_bool_t *pb_obj_destroyed,
 561                                     mtime_t *pi_obj_destroyed_date )
 562 {
 563     vlc_object_t *p_obj;
 564     if( *pb_obj_destroyed || *pi_obj_destroyed_date > mdate() )
 565     {
 566         return;
 567     }
 568
 569     if( *pi_obj_destroyed_date == 0 )
 570     {
 571         /* give a little time */
 572         *pi_obj_destroyed_date = mdate() + 300000LL;
 573     }
 574     else
 575     {
 576         while( ( p_obj = vlc_object_find( p_playlist,
 577                                            i_type,
 578                                            FIND_CHILD ) ) )
 579         {
 580             if( p_obj->p_parent != (vlc_object_t*)p_playlist )
 581             {
 582                 /* only first chiled (ie unused) */
 583                 vlc_object_release( p_obj );
 584                 break;
 585             }
 586             if( i_type == VLC_OBJECT_VOUT )
 587             {
 588                 msg_Dbg( p_playlist, "vout garbage collector destroying 1 vout" );
 589                 vlc_object_detach( p_obj );
 590                 vlc_object_release( p_obj );
 591                 vout_Destroy( (vout_thread_t *)p_obj );
 592             }
 593             else if( i_type == VLC_OBJECT_SOUT )
 594             {
 595                 vlc_object_release( p_obj );
 596                 sout_DeleteInstance( (sout_instance_t*)p_obj );
 597             }
 598         }
 599         *pb_obj_destroyed = VLC_TRUE;
 600     }
 601 }
 602
 603 /*****************************************************************************
 604  * RunThread: main playlist thread
 605  *****************************************************************************/
 606 static void RunThread ( playlist_t *p_playlist )
 607 {
 608     vlc_object_t *p_obj;
 609     vlc_bool_t b_vout_destroyed = VLC_FALSE; /*we do vout garbage collector */
 610     mtime_t    i_vout_destroyed_date = 0;
 611
 612     vlc_bool_t b_sout_destroyed = VLC_FALSE; /*we do vout garbage collector */
 613     mtime_t    i_sout_destroyed_date = 0;
 614
 615     /* Tell above that we're ready */
 616     vlc_thread_ready( p_playlist );
 617
 618     while( !p_playlist->b_die )
 619     {
 620         vlc_mutex_lock( &p_playlist->object_lock );
 621
 622         /* If there is an input, check that it doesn't need to die. */
 623         if( p_playlist->p_input )
 624         {
 625             /* This input is dead. Remove it ! */
 626             if( p_playlist->p_input->b_dead )
 627             {
 628                 input_thread_t *p_input;
 629
 630                 p_input = p_playlist->p_input;
 631                 p_playlist->p_input = NULL;
 632
 633                 /* Release the playlist lock, because we may get stuck
 634                  * in input_DestroyThread() for some time. */
 635                 vlc_mutex_unlock( &p_playlist->object_lock );
 636
 637                 /* Destroy input */
 638                 input_DestroyThread( p_input );
 639
 640                 /* Unlink current input (_after_ input_DestroyThread for vout garbage collector)*/
 641                 vlc_object_detach( p_input );
 642
 643                 /* Destroy object */
 644                 vlc_object_destroy( p_input );
 645
 646                 b_vout_destroyed = VLC_FALSE;
 647                 i_vout_destroyed_date = 0;
 648                 b_sout_destroyed = VLC_FALSE;
 649                 i_sout_destroyed_date = 0;
 650                 continue;
 651             }
 652             /* This input is dying, let him do */
 653             else if( p_playlist->p_input->b_die )
 654             {
 655                 ;
 656             }
 657             /* This input has finished, ask him to die ! */
 658             else if( p_playlist->p_input->b_error
 659                       || p_playlist->p_input->b_eof )
 660             {
 661                 /* Check for autodeletion */
 662                 if( p_playlist->pp_items[p_playlist->i_index]->b_autodeletion )
 663                 {
 664                     vlc_mutex_unlock( &p_playlist->object_lock );
 665                     playlist_Delete( p_playlist, p_playlist->i_index );
 666                     vlc_mutex_lock( &p_playlist->object_lock );
 667                 }
 668
 669                 /* Select the next playlist item */
 670                 SkipItem( p_playlist, 1 );
 671
 672                 input_StopThread( p_playlist->p_input );
 673                 vlc_mutex_unlock( &p_playlist->object_lock );
 674                 continue;
 675             }
 676             else if( p_playlist->p_input->stream.control.i_status != INIT_S )
 677             {
 678                 vlc_mutex_unlock( &p_playlist->object_lock );
 679                 ObjectGarbageCollector( p_playlist, VLC_OBJECT_VOUT,
 680                                         &b_vout_destroyed,
 681                                         &i_vout_destroyed_date );
 682                 ObjectGarbageCollector( p_playlist, VLC_OBJECT_SOUT,
 683                                         &b_sout_destroyed,
 684                                         &i_sout_destroyed_date );
 685                 vlc_mutex_lock( &p_playlist->object_lock );
 686             }
 687         }
 688         else if( p_playlist->i_status != PLAYLIST_STOPPED )
 689         {
 690             SkipItem( p_playlist, 0 );
 691             PlayItem( p_playlist );
 692         }
 693         else if( p_playlist->i_status == PLAYLIST_STOPPED )
 694         {
 695             vlc_mutex_unlock( &p_playlist->object_lock );
 696             ObjectGarbageCollector( p_playlist, VLC_OBJECT_SOUT,
 697                                     &b_sout_destroyed, &i_sout_destroyed_date );
 698             ObjectGarbageCollector( p_playlist, VLC_OBJECT_VOUT,
 699                                     &b_vout_destroyed, &i_vout_destroyed_date );
 700             vlc_mutex_lock( &p_playlist->object_lock );
 701         }
 702         vlc_mutex_unlock( &p_playlist->object_lock );
 703
 704         msleep( INTF_IDLE_SLEEP );
 705     }
 706
 707     /* If there is an input, kill it */
 708     while( 1 )
 709     {
 710         vlc_mutex_lock( &p_playlist->object_lock );
 711
 712         if( p_playlist->p_input == NULL )
 713         {
 714             vlc_mutex_unlock( &p_playlist->object_lock );
 715             break;
 716         }
 717
 718         if( p_playlist->p_input->b_dead )
 719         {
 720             input_thread_t *p_input;
 721
 722             /* Unlink current input */
 723             p_input = p_playlist->p_input;
 724             p_playlist->p_input = NULL;
 725             vlc_mutex_unlock( &p_playlist->object_lock );
 726
 727             /* Destroy input */
 728             input_DestroyThread( p_input );
 729             /* Unlink current input (_after_ input_DestroyThread for vout
 730              * garbage collector)*/
 731             vlc_object_detach( p_input );
 732
 733             /* Destroy object */
 734             vlc_object_destroy( p_input );
 735             continue;
 736         }
 737         else if( p_playlist->p_input->b_die )
 738         {
 739             /* This input is dying, leave him alone */
 740             ;
 741         }
 742         else if( p_playlist->p_input->b_error || p_playlist->p_input->b_eof )
 743         {
 744             input_StopThread( p_playlist->p_input );
 745             vlc_mutex_unlock( &p_playlist->object_lock );
 746             continue;
 747         }
 748         else
 749         {
 750             p_playlist->p_input->b_eof = 1;
 751         }
 752
 753         vlc_mutex_unlock( &p_playlist->object_lock );
 754
 755         msleep( INTF_IDLE_SLEEP );
 756     }
 757
 758     /* close all remaining sout */
 759     while( ( p_obj = vlc_object_find( p_playlist,
 760                                       VLC_OBJECT_SOUT, FIND_CHILD ) ) )
 761     {
 762         vlc_object_release( p_obj );
 763         sout_DeleteInstance( (sout_instance_t*)p_obj );
 764     }
 765
 766     /* close all remaining vout */
 767     while( ( p_obj = vlc_object_find( p_playlist,
 768                                       VLC_OBJECT_VOUT, FIND_CHILD ) ) )
 769     {
 770         vlc_object_detach( p_obj );
 771         vlc_object_release( p_obj );
 772         vout_Destroy( (vout_thread_t *)p_obj );
 773     }
 774 }
 775
 776 /*****************************************************************************
 777  * SkipItem: go to Xth playlist item
 778  *****************************************************************************
 779  * This function calculates the position of the next playlist item, depending
 780  * on the playlist course mode (forward, backward, random...).
 781  *****************************************************************************/
 782 static void SkipItem( playlist_t *p_playlist, int i_arg )
 783 {
 784     int i_oldindex = p_playlist->i_index;
 785     vlc_bool_t b_random, b_repeat, b_loop;
 786     vlc_value_t val;
 787
 788     /* If the playlist is empty, there is no current item */
 789     if( p_playlist->i_size == 0 )
 790     {
 791         p_playlist->i_index = -1;
 792         return;
 793     }
 794
 795     var_Get( p_playlist, "random", &val );
 796     b_random = val.b_bool;
 797     var_Get( p_playlist, "repeat", &val );
 798     b_repeat = val.b_bool;
 799     var_Get( p_playlist, "loop", &val );
 800     b_loop = val.b_bool;
 801
 802     /* Increment */
 803     if( b_random )
 804     {
 805         srand( (unsigned int)mdate() );
 806
 807         /* Simple random stuff - we cheat a bit to minimize the chances to
 808          * get the same index again. */
 809         i_arg = (int)((float)p_playlist->i_size * rand() / (RAND_MAX+1.0));
 810         if( i_arg == 0 )
 811         {
 812             i_arg = (int)((float)p_playlist->i_size * rand() / (RAND_MAX+1.0));
 813         }
 814     }
 815     if( b_repeat )
 816     {
 817         i_arg = 0;
 818     }
 819     p_playlist->i_index += i_arg;
 820
 821     /* Boundary check */
 822     if( p_playlist->i_index >= p_playlist->i_size )
 823     {
 824         if( p_playlist->i_status == PLAYLIST_STOPPED
 825              || b_random
 826              || b_loop )
 827         {
 828             p_playlist->i_index -= p_playlist->i_size
 829                          * ( p_playlist->i_index / p_playlist->i_size );
 830         }
 831         else
 832         {
 833             /* Don't loop by default: stop at playlist end */
 834             p_playlist->i_index = i_oldindex;
 835             p_playlist->i_status = PLAYLIST_STOPPED;
 836         }
 837     }
 838     else if( p_playlist->i_index < 0 )
 839     {
 840         p_playlist->i_index = p_playlist->i_size - 1;
 841     }
 842
 843     val.b_bool = VLC_TRUE;
 844     var_Set( p_playlist, "intf-change", val );
 845 }
 846
 847 /*****************************************************************************
 848  * PlayItem: play current playlist item
 849  *****************************************************************************
 850  * This function calculates the position of the next playlist item, depending
 851  * on the playlist course mode (forward, backward, random...).
 852  *****************************************************************************/
 853 static void PlayItem( playlist_t *p_playlist )
 854 {
 855     if( p_playlist->i_index == -1 )
 856     {
 857         if( p_playlist->i_size == 0 )
 858         {
 859             return;
 860         }
 861
 862         SkipItem( p_playlist, 1 );
 863     }
 864
 865     msg_Dbg( p_playlist, "creating new input thread" );
 866     p_playlist->p_input = input_CreateThread( p_playlist,
 867                                   p_playlist->pp_items[p_playlist->i_index] );
 868 }
 869
 870 /*****************************************************************************
 871  * Poubellize: put an input thread in the trashcan
 872  *****************************************************************************
 873  * XXX: unused
 874  *****************************************************************************/
 875 static void Poubellize ( playlist_t *p_playlist, input_thread_t *p_input )
 876 {
 877     msg_Dbg( p_playlist, "poubellizing input %i\n", p_input->i_object_id );
 878 }
 879
 880 /*****************************************************************************
 881  * playlist_LoadFile: load a playlist file.
 882  ****************************************************************************/
 883 int playlist_LoadFile( playlist_t * p_playlist, const char *psz_filename )
 884 {
 885     FILE *file;
 886     char line[1024];
 887     int i_current_status;
 888     int i;
 889
 890     msg_Dbg( p_playlist, "opening playlist file %s", psz_filename );
 891
 892     file = fopen( psz_filename, "rt" );
 893     if( !file )
 894     {
 895         msg_Err( p_playlist, "playlist file %s does not exist", psz_filename );
 896         return -1;
 897     }
 898     fseek( file, 0L, SEEK_SET );
 899
 900     /* check the file is not empty */
 901     if ( ! fgets( line, 1024, file ) )
 902     {
 903         msg_Err( p_playlist, "playlist file %s is empty", psz_filename );
 904         fclose( file );
 905         return -1;
 906     }
 907
 908     /* get rid of line feed */
 909     if( line[strlen(line)-1] == '\n' || line[strlen(line)-1] == '\r' )
 910     {
 911        line[strlen(line)-1] = (char)0;
 912        if( line[strlen(line)-1] == '\r' ) line[strlen(line)-1] = (char)0;
 913     }
 914     /* check the file format is valid */
 915     if ( strcmp ( line , PLAYLIST_FILE_HEADER_0_5 ) )
 916     {
 917         msg_Err( p_playlist, "playlist file %s format is unsupported"
 918                 , psz_filename );
 919         fclose( file );
 920         return -1;
 921     }
 922
 923     /* stop playing */
 924     i_current_status = p_playlist->i_status;
 925     if ( p_playlist->i_status != PLAYLIST_STOPPED )
 926     {
 927         playlist_Stop ( p_playlist );
 928     }
 929
 930     /* delete current content of the playlist */
 931     for( i = p_playlist->i_size - 1; i >= 0; i-- )
 932     {
 933         playlist_Delete ( p_playlist , i );
 934     }
 935
 936     /* simply add each line */
 937     while( fgets( line, 1024, file ) )
 938     {
 939        /* ignore comments or empty lines */
 940        if( (line[0] == '#') || (line[0] == '\r') || (line[0] == '\n')
 941                || (line[0] == (char)0) )
 942            continue;
 943
 944        /* get rid of line feed */
 945        if( line[strlen(line)-1] == '\n' || line[strlen(line)-1] == '\r' )
 946        {
 947            line[strlen(line)-1] = (char)0;
 948            if( line[strlen(line)-1] == '\r' ) line[strlen(line)-1] = (char)0;
 949        }
 950
 951        playlist_Add ( p_playlist , (char *)&line ,
 952                       0, 0, PLAYLIST_APPEND , PLAYLIST_END );
 953     }
 954
 955     /* start playing */
 956     if ( i_current_status != PLAYLIST_STOPPED )
 957     {
 958         playlist_Play ( p_playlist );
 959     }
 960
 961     fclose( file );
 962
 963     return 0;
 964 }
 965
 966 /*****************************************************************************
 967  * playlist_SaveFile: Save a playlist in a file.
 968  *****************************************************************************/
 969 int playlist_SaveFile( playlist_t * p_playlist, const char * psz_filename )
 970 {
 971     FILE *file;
 972     int i;
 973
 974     vlc_mutex_lock( &p_playlist->object_lock );
 975
 976     msg_Dbg( p_playlist, "saving playlist file %s", psz_filename );
 977
 978     file = fopen( psz_filename, "wt" );
 979     if( !file )
 980     {
 981         msg_Err( p_playlist , "could not create playlist file %s"
 982                 , psz_filename );
 983         return -1;
 984     }
 985
 986     fprintf( file , PLAYLIST_FILE_HEADER_0_5 "\n" );
 987
 988     for ( i = 0 ; i < p_playlist->i_size ; i++ )
 989     {
 990         fprintf( file , p_playlist->pp_items[i]->psz_uri );
 991         fprintf( file , "\n" );
 992     }
 993
 994     fclose( file );
 995
 996     vlc_mutex_unlock( &p_playlist->object_lock );
 997
 998     return 0;
 999 }