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 1.56 2003/09/24 10:21:32 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     vlc_mutex_unlock( &p_playlist->object_lock );
 404
 405     return 0;
 406 }
 407
 408 /**
 409  * Move an item in a playlist
 410  *
 411  * Move the item in the playlist with position i_pos before the current item
 412  * at position i_newpos.
 413  * \param p_playlist the playlist to move items in
 414  * \param i_pos the position of the item to move
 415  * \param i_newpos the position of the item that will be behind the moved item
 416  *        after the move
 417  * \return returns 0
 418  */
 419 int playlist_Move( playlist_t * p_playlist, int i_pos, int i_newpos)
 420 {
 421     vlc_value_t     val;
 422     vlc_mutex_lock( &p_playlist->object_lock );
 423
 424     /* take into account that our own row disappears. */
 425     if ( i_pos < i_newpos ) i_newpos--;
 426
 427     if( i_pos >= 0 && i_newpos >=0 && i_pos <= p_playlist->i_size
 428                      && i_newpos <= p_playlist->i_size )
 429     {
 430         playlist_item_t * temp;
 431
 432         msg_Dbg( p_playlist, "moving playlist item « %s »",
 433                              p_playlist->pp_items[i_pos]->psz_name );
 434
 435         if( i_pos == p_playlist->i_index )
 436         {
 437             p_playlist->i_index = i_newpos;
 438         }
 439         else if( i_pos > p_playlist->i_index && i_newpos <= p_playlist->i_index )
 440         {
 441             p_playlist->i_index++;
 442         }
 443         else if( i_pos < p_playlist->i_index && i_newpos >= p_playlist->i_index )
 444         {
 445             p_playlist->i_index--;
 446         }
 447
 448         if ( i_pos < i_newpos )
 449         {
 450             temp = p_playlist->pp_items[i_pos];
 451             while ( i_pos < i_newpos )
 452             {
 453                 p_playlist->pp_items[i_pos] = p_playlist->pp_items[i_pos+1];
 454                 i_pos++;
 455             }
 456             p_playlist->pp_items[i_newpos] = temp;
 457         }
 458         else if ( i_pos > i_newpos )
 459         {
 460             temp = p_playlist->pp_items[i_pos];
 461             while ( i_pos > i_newpos )
 462             {
 463                 p_playlist->pp_items[i_pos] = p_playlist->pp_items[i_pos-1];
 464                 i_pos--;
 465             }
 466             p_playlist->pp_items[i_newpos] = temp;
 467         }
 468     }
 469
 470     vlc_mutex_unlock( &p_playlist->object_lock );
 471
 472     val.b_bool = VLC_TRUE;
 473     var_Set( p_playlist, "intf-change", val );
 474
 475     return 0;
 476 }
 477
 478 /**
 479  * Do a playlist action
 480  *
 481  * \param p_playlist the playlist to do the command on
 482  * \param i_command the command to do
 483  * \param i_arg the argument to the command. See playlist_command_t for details
 484  */
 485  void playlist_Command( playlist_t * p_playlist, playlist_command_t i_command,
 486                        int i_arg )
 487 {
 488     vlc_value_t val;
 489
 490     vlc_mutex_lock( &p_playlist->object_lock );
 491
 492     switch( i_command )
 493     {
 494     case PLAYLIST_STOP:
 495         p_playlist->i_status = PLAYLIST_STOPPED;
 496         if( p_playlist->p_input )
 497         {
 498             input_StopThread( p_playlist->p_input );
 499         }
 500         break;
 501
 502     case PLAYLIST_PLAY:
 503         p_playlist->i_status = PLAYLIST_RUNNING;
 504         if( !p_playlist->p_input )
 505         {
 506             PlayItem( p_playlist );
 507         }
 508         if( p_playlist->p_input )
 509         {
 510             val.i_int = PLAYING_S;
 511             var_Set( p_playlist->p_input, "state", val );
 512         }
 513         break;
 514
 515     case PLAYLIST_PAUSE:
 516         p_playlist->i_status = PLAYLIST_PAUSED;
 517         if( p_playlist->p_input )
 518         {
 519             val.i_int = PAUSE_S;
 520             var_Set( p_playlist->p_input, "state", val );
 521         }
 522         break;
 523
 524     case PLAYLIST_SKIP:
 525         p_playlist->i_status = PLAYLIST_STOPPED;
 526         SkipItem( p_playlist, i_arg );
 527         if( p_playlist->p_input )
 528         {
 529             input_StopThread( p_playlist->p_input );
 530         }
 531         p_playlist->i_status = PLAYLIST_RUNNING;
 532         break;
 533
 534     case PLAYLIST_GOTO:
 535         if( i_arg >= 0 && i_arg < p_playlist->i_size )
 536         {
 537             p_playlist->i_index = i_arg;
 538             if( p_playlist->p_input )
 539             {
 540                 input_StopThread( p_playlist->p_input );
 541             }
 542             p_playlist->i_status = PLAYLIST_RUNNING;
 543         }
 544         break;
 545
 546     default:
 547         msg_Err( p_playlist, "unknown playlist command" );
 548         break;
 549     }
 550
 551     vlc_mutex_unlock( &p_playlist->object_lock );
 552
 553     return;
 554 }
 555 /* Following functions are local */
 556
 557 static void ObjectGarbageCollector( playlist_t *p_playlist,
 558                                     int i_type,
 559                                     vlc_bool_t *pb_obj_destroyed,
 560                                     mtime_t *pi_obj_destroyed_date )
 561 {
 562     vlc_object_t *p_obj;
 563     if( *pb_obj_destroyed || *pi_obj_destroyed_date > mdate() )
 564     {
 565         return;
 566     }
 567
 568     if( *pi_obj_destroyed_date == 0 )
 569     {
 570         /* give a little time */
 571         *pi_obj_destroyed_date = mdate() + 300000LL;
 572     }
 573     else
 574     {
 575         while( ( p_obj = vlc_object_find( p_playlist,
 576                                            i_type,
 577                                            FIND_CHILD ) ) )
 578         {
 579             if( p_obj->p_parent != (vlc_object_t*)p_playlist )
 580             {
 581                 /* only first chiled (ie unused) */
 582                 vlc_object_release( p_obj );
 583                 break;
 584             }
 585             if( i_type == VLC_OBJECT_VOUT )
 586             {
 587                 msg_Dbg( p_playlist, "vout garbage collector destroying 1 vout" );
 588                 vlc_object_detach( p_obj );
 589                 vlc_object_release( p_obj );
 590                 vout_Destroy( (vout_thread_t *)p_obj );
 591             }
 592             else if( i_type == VLC_OBJECT_SOUT )
 593             {
 594                 vlc_object_release( p_obj );
 595                 sout_DeleteInstance( (sout_instance_t*)p_obj );
 596             }
 597         }
 598         *pb_obj_destroyed = VLC_TRUE;
 599     }
 600 }
 601
 602 /*****************************************************************************
 603  * RunThread: main playlist thread
 604  *****************************************************************************/
 605 static void RunThread ( playlist_t *p_playlist )
 606 {
 607     vlc_object_t *p_obj;
 608     vlc_bool_t b_vout_destroyed = VLC_FALSE; /*we do vout garbage collector */
 609     mtime_t    i_vout_destroyed_date = 0;
 610
 611     vlc_bool_t b_sout_destroyed = VLC_FALSE; /*we do vout garbage collector */
 612     mtime_t    i_sout_destroyed_date = 0;
 613
 614     /* Tell above that we're ready */
 615     vlc_thread_ready( p_playlist );
 616
 617     while( !p_playlist->b_die )
 618     {
 619         vlc_mutex_lock( &p_playlist->object_lock );
 620
 621         /* If there is an input, check that it doesn't need to die. */
 622         if( p_playlist->p_input )
 623         {
 624             /* This input is dead. Remove it ! */
 625             if( p_playlist->p_input->b_dead )
 626             {
 627                 input_thread_t *p_input;
 628
 629                 p_input = p_playlist->p_input;
 630                 p_playlist->p_input = NULL;
 631
 632                 /* Release the playlist lock, because we may get stuck
 633                  * in input_DestroyThread() for some time. */
 634                 vlc_mutex_unlock( &p_playlist->object_lock );
 635
 636                 /* Destroy input */
 637                 input_DestroyThread( p_input );
 638
 639                 /* Unlink current input (_after_ input_DestroyThread for vout garbage collector)*/
 640                 vlc_object_detach( p_input );
 641
 642                 /* Destroy object */
 643                 vlc_object_destroy( p_input );
 644
 645                 b_vout_destroyed = VLC_FALSE;
 646                 i_vout_destroyed_date = 0;
 647                 b_sout_destroyed = VLC_FALSE;
 648                 i_sout_destroyed_date = 0;
 649                 continue;
 650             }
 651             /* This input is dying, let him do */
 652             else if( p_playlist->p_input->b_die )
 653             {
 654                 ;
 655             }
 656             /* This input has finished, ask him to die ! */
 657             else if( p_playlist->p_input->b_error
 658                       || p_playlist->p_input->b_eof )
 659             {
 660                 /* Check for autodeletion */
 661                 if( p_playlist->pp_items[p_playlist->i_index]->b_autodeletion )
 662                 {
 663                     vlc_mutex_unlock( &p_playlist->object_lock );
 664                     playlist_Delete( p_playlist, p_playlist->i_index );
 665                     vlc_mutex_lock( &p_playlist->object_lock );
 666                 }
 667
 668                 /* Select the next playlist item */
 669                 SkipItem( p_playlist, 1 );
 670
 671                 input_StopThread( p_playlist->p_input );
 672                 vlc_mutex_unlock( &p_playlist->object_lock );
 673                 continue;
 674             }
 675             else if( p_playlist->p_input->stream.control.i_status != INIT_S )
 676             {
 677                 vlc_mutex_unlock( &p_playlist->object_lock );
 678                 ObjectGarbageCollector( p_playlist, VLC_OBJECT_VOUT,
 679                                         &b_vout_destroyed,
 680                                         &i_vout_destroyed_date );
 681                 ObjectGarbageCollector( p_playlist, VLC_OBJECT_SOUT,
 682                                         &b_sout_destroyed,
 683                                         &i_sout_destroyed_date );
 684                 vlc_mutex_lock( &p_playlist->object_lock );
 685             }
 686         }
 687         else if( p_playlist->i_status != PLAYLIST_STOPPED )
 688         {
 689             SkipItem( p_playlist, 0 );
 690             PlayItem( p_playlist );
 691         }
 692         else if( p_playlist->i_status == PLAYLIST_STOPPED )
 693         {
 694             vlc_mutex_unlock( &p_playlist->object_lock );
 695             ObjectGarbageCollector( p_playlist, VLC_OBJECT_SOUT,
 696                                     &b_sout_destroyed, &i_sout_destroyed_date );
 697             ObjectGarbageCollector( p_playlist, VLC_OBJECT_VOUT,
 698                                     &b_vout_destroyed, &i_vout_destroyed_date );
 699             vlc_mutex_lock( &p_playlist->object_lock );
 700         }
 701         vlc_mutex_unlock( &p_playlist->object_lock );
 702
 703         msleep( INTF_IDLE_SLEEP );
 704     }
 705
 706     /* If there is an input, kill it */
 707     while( 1 )
 708     {
 709         vlc_mutex_lock( &p_playlist->object_lock );
 710
 711         if( p_playlist->p_input == NULL )
 712         {
 713             vlc_mutex_unlock( &p_playlist->object_lock );
 714             break;
 715         }
 716
 717         if( p_playlist->p_input->b_dead )
 718         {
 719             input_thread_t *p_input;
 720
 721             /* Unlink current input */
 722             p_input = p_playlist->p_input;
 723             p_playlist->p_input = NULL;
 724             vlc_mutex_unlock( &p_playlist->object_lock );
 725
 726             /* Destroy input */
 727             input_DestroyThread( p_input );
 728             /* Unlink current input (_after_ input_DestroyThread for vout
 729              * garbage collector)*/
 730             vlc_object_detach( p_input );
 731
 732             /* Destroy object */
 733             vlc_object_destroy( p_input );
 734             continue;
 735         }
 736         else if( p_playlist->p_input->b_die )
 737         {
 738             /* This input is dying, leave him alone */
 739             ;
 740         }
 741         else if( p_playlist->p_input->b_error || p_playlist->p_input->b_eof )
 742         {
 743             input_StopThread( p_playlist->p_input );
 744             vlc_mutex_unlock( &p_playlist->object_lock );
 745             continue;
 746         }
 747         else
 748         {
 749             p_playlist->p_input->b_eof = 1;
 750         }
 751
 752         vlc_mutex_unlock( &p_playlist->object_lock );
 753
 754         msleep( INTF_IDLE_SLEEP );
 755     }
 756
 757     /* close all remaining sout */
 758     while( ( p_obj = vlc_object_find( p_playlist,
 759                                       VLC_OBJECT_SOUT, FIND_CHILD ) ) )
 760     {
 761         vlc_object_release( p_obj );
 762         sout_DeleteInstance( (sout_instance_t*)p_obj );
 763     }
 764
 765     /* close all remaining vout */
 766     while( ( p_obj = vlc_object_find( p_playlist,
 767                                       VLC_OBJECT_VOUT, FIND_CHILD ) ) )
 768     {
 769         vlc_object_detach( p_obj );
 770         vlc_object_release( p_obj );
 771         vout_Destroy( (vout_thread_t *)p_obj );
 772     }
 773 }
 774
 775 /*****************************************************************************
 776  * SkipItem: go to Xth playlist item
 777  *****************************************************************************
 778  * This function calculates the position of the next playlist item, depending
 779  * on the playlist course mode (forward, backward, random...).
 780  *****************************************************************************/
 781 static void SkipItem( playlist_t *p_playlist, int i_arg )
 782 {
 783     int i_oldindex = p_playlist->i_index;
 784     vlc_bool_t b_random, b_repeat, b_loop;
 785     vlc_value_t val;
 786
 787     /* If the playlist is empty, there is no current item */
 788     if( p_playlist->i_size == 0 )
 789     {
 790         p_playlist->i_index = -1;
 791         return;
 792     }
 793
 794     var_Get( p_playlist, "random", &val );
 795     b_random = val.b_bool;
 796     var_Get( p_playlist, "repeat", &val );
 797     b_repeat = val.b_bool;
 798     var_Get( p_playlist, "loop", &val );
 799     b_loop = val.b_bool;
 800
 801     /* Increment */
 802     if( b_random )
 803     {
 804         srand( (unsigned int)mdate() );
 805
 806         /* Simple random stuff - we cheat a bit to minimize the chances to
 807          * get the same index again. */
 808         i_arg = (int)((float)p_playlist->i_size * rand() / (RAND_MAX+1.0));
 809         if( i_arg == 0 )
 810         {
 811             i_arg = (int)((float)p_playlist->i_size * rand() / (RAND_MAX+1.0));
 812         }
 813     }
 814     if( b_repeat )
 815     {
 816         i_arg = 0;
 817     }
 818     p_playlist->i_index += i_arg;
 819
 820     /* Boundary check */
 821     if( p_playlist->i_index >= p_playlist->i_size )
 822     {
 823         if( p_playlist->i_status == PLAYLIST_STOPPED
 824              || b_random
 825              || b_loop )
 826         {
 827             p_playlist->i_index -= p_playlist->i_size
 828                          * ( p_playlist->i_index / p_playlist->i_size );
 829         }
 830         else
 831         {
 832             /* Don't loop by default: stop at playlist end */
 833             p_playlist->i_index = i_oldindex;
 834             p_playlist->i_status = PLAYLIST_STOPPED;
 835         }
 836     }
 837     else if( p_playlist->i_index < 0 )
 838     {
 839         p_playlist->i_index = p_playlist->i_size - 1;
 840     }
 841
 842     val.b_bool = VLC_TRUE;
 843     var_Set( p_playlist, "intf-change", val );
 844 }
 845
 846 /*****************************************************************************
 847  * PlayItem: play current playlist item
 848  *****************************************************************************
 849  * This function calculates the position of the next playlist item, depending
 850  * on the playlist course mode (forward, backward, random...).
 851  *****************************************************************************/
 852 static void PlayItem( playlist_t *p_playlist )
 853 {
 854     if( p_playlist->i_index == -1 )
 855     {
 856         if( p_playlist->i_size == 0 )
 857         {
 858             return;
 859         }
 860
 861         SkipItem( p_playlist, 1 );
 862     }
 863
 864     msg_Dbg( p_playlist, "creating new input thread" );
 865     p_playlist->p_input = input_CreateThread( p_playlist,
 866                                   p_playlist->pp_items[p_playlist->i_index] );
 867 }
 868
 869 /*****************************************************************************
 870  * Poubellize: put an input thread in the trashcan
 871  *****************************************************************************
 872  * XXX: unused
 873  *****************************************************************************/
 874 static void Poubellize ( playlist_t *p_playlist, input_thread_t *p_input )
 875 {
 876     msg_Dbg( p_playlist, "poubellizing input %i\n", p_input->i_object_id );
 877 }
 878
 879 /*****************************************************************************
 880  * playlist_LoadFile: load a playlist file.
 881  ****************************************************************************/
 882 int playlist_LoadFile( playlist_t * p_playlist, const char *psz_filename )
 883 {
 884     FILE *file;
 885     char line[1024];
 886     int i_current_status;
 887     int i;
 888
 889     msg_Dbg( p_playlist, "opening playlist file %s", psz_filename );
 890
 891     file = fopen( psz_filename, "rt" );
 892     if( !file )
 893     {
 894         msg_Err( p_playlist, "playlist file %s does not exist", psz_filename );
 895         return -1;
 896     }
 897     fseek( file, 0L, SEEK_SET );
 898
 899     /* check the file is not empty */
 900     if ( ! fgets( line, 1024, file ) )
 901     {
 902         msg_Err( p_playlist, "playlist file %s is empty", psz_filename );
 903         fclose( file );
 904         return -1;
 905     }
 906
 907     /* get rid of line feed */
 908     if( line[strlen(line)-1] == '\n' || line[strlen(line)-1] == '\r' )
 909     {
 910        line[strlen(line)-1] = (char)0;
 911        if( line[strlen(line)-1] == '\r' ) line[strlen(line)-1] = (char)0;
 912     }
 913     /* check the file format is valid */
 914     if ( strcmp ( line , PLAYLIST_FILE_HEADER_0_5 ) )
 915     {
 916         msg_Err( p_playlist, "playlist file %s format is unsupported"
 917                 , psz_filename );
 918         fclose( file );
 919         return -1;
 920     }
 921
 922     /* stop playing */
 923     i_current_status = p_playlist->i_status;
 924     if ( p_playlist->i_status != PLAYLIST_STOPPED )
 925     {
 926         playlist_Stop ( p_playlist );
 927     }
 928
 929     /* delete current content of the playlist */
 930     for( i = p_playlist->i_size - 1; i >= 0; i-- )
 931     {
 932         playlist_Delete ( p_playlist , i );
 933     }
 934
 935     /* simply add each line */
 936     while( fgets( line, 1024, file ) )
 937     {
 938        /* ignore comments or empty lines */
 939        if( (line[0] == '#') || (line[0] == '\r') || (line[0] == '\n')
 940                || (line[0] == (char)0) )
 941            continue;
 942
 943        /* get rid of line feed */
 944        if( line[strlen(line)-1] == '\n' || line[strlen(line)-1] == '\r' )
 945        {
 946            line[strlen(line)-1] = (char)0;
 947            if( line[strlen(line)-1] == '\r' ) line[strlen(line)-1] = (char)0;
 948        }
 949
 950        playlist_Add ( p_playlist , (char *)&line ,
 951                       0, 0, PLAYLIST_APPEND , PLAYLIST_END );
 952     }
 953
 954     /* start playing */
 955     if ( i_current_status != PLAYLIST_STOPPED )
 956     {
 957         playlist_Play ( p_playlist );
 958     }
 959
 960     fclose( file );
 961
 962     return 0;
 963 }
 964
 965 /*****************************************************************************
 966  * playlist_SaveFile: Save a playlist in a file.
 967  *****************************************************************************/
 968 int playlist_SaveFile( playlist_t * p_playlist, const char * psz_filename )
 969 {
 970     FILE *file;
 971     int i;
 972
 973     vlc_mutex_lock( &p_playlist->object_lock );
 974
 975     msg_Dbg( p_playlist, "saving playlist file %s", psz_filename );
 976
 977     file = fopen( psz_filename, "wt" );
 978     if( !file )
 979     {
 980         msg_Err( p_playlist , "could not create playlist file %s"
 981                 , psz_filename );
 982         return -1;
 983     }
 984
 985     fprintf( file , PLAYLIST_FILE_HEADER_0_5 "\n" );
 986
 987     for ( i = 0 ; i < p_playlist->i_size ; i++ )
 988     {
 989         fprintf( file , p_playlist->pp_items[i]->psz_uri );
 990         fprintf( file , "\n" );
 991     }
 992
 993     fclose( file );
 994
 995     vlc_mutex_unlock( &p_playlist->object_lock );
 996
 997     return 0;
 998 }