git.sesse.net Git - vlc/blob - src/input/input_programs.c

   1 /*****************************************************************************
   2  * input_programs.c: es_descriptor_t, pgrm_descriptor_t management
   3  *****************************************************************************
   4  * Copyright (C) 1999-2002 VideoLAN
   5  * $Id: input_programs.c,v 1.106 2003/05/05 22:23:42 gbazin Exp $
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   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
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>
  28 #include <string.h>                                    /* memcpy(), memset() */
  29
  30 #include <vlc/vlc.h>
  31
  32 #include "stream_control.h"
  33 #include "input_ext-intf.h"
  34 #include "input_ext-dec.h"
  35 #include "input_ext-plugins.h"
  36
  37 /*
  38  * NOTICE : all of these functions expect you to have taken the lock on
  39  * p_input->stream.lock
  40  */
  41
  42 /* Navigation callbacks */
  43 static int ProgramCallback( vlc_object_t *, char const *,
  44                             vlc_value_t, vlc_value_t, void * );
  45 static int TitleCallback( vlc_object_t *, char const *,
  46                           vlc_value_t, vlc_value_t, void * );
  47 static int ChapterCallback( vlc_object_t *, char const *,
  48                             vlc_value_t, vlc_value_t, void * );
  49 static int NavigationCallback( vlc_object_t *, char const *,
  50                                vlc_value_t, vlc_value_t, void * );
  51 static int ESCallback( vlc_object_t *, char const *,
  52                        vlc_value_t, vlc_value_t, void * );
  53
  54 /*****************************************************************************
  55  * input_InitStream: init the stream descriptor of the given input
  56  *****************************************************************************/
  57 int input_InitStream( input_thread_t * p_input, size_t i_data_len )
  58 {
  59     vlc_value_t text;
  60
  61     p_input->stream.i_stream_id = 0;
  62
  63     /* initialized to 0 since we don't give the signal to the interface
  64      * before the end of input initialization */
  65     p_input->stream.b_changed = 0;
  66     p_input->stream.pp_es = NULL;
  67     p_input->stream.pp_selected_es = NULL;
  68     p_input->stream.p_removed_es = NULL;
  69     p_input->stream.p_newly_selected_es = NULL;
  70     p_input->stream.pp_programs = NULL;
  71     p_input->stream.p_selected_program = NULL;
  72     p_input->stream.p_new_program = NULL;
  73
  74     if( i_data_len )
  75     {
  76         if ( (p_input->stream.p_demux_data = malloc( i_data_len )) == NULL )
  77         {
  78             msg_Err( p_input, "out of memory" );
  79             return 1;
  80         }
  81         memset( p_input->stream.p_demux_data, 0, i_data_len );
  82     }
  83     else
  84     {
  85         p_input->stream.p_demux_data = NULL;
  86     }
  87
  88     /* Create a few object variables used for navigation in the interfaces */
  89     var_Create( p_input, "program", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
  90     text.psz_string = _("Program");
  91     var_Change( p_input, "program", VLC_VAR_SETTEXT, &text, NULL );
  92     var_Create( p_input, "title", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
  93     text.psz_string = _("Title");
  94     var_Change( p_input, "title", VLC_VAR_SETTEXT, &text, NULL );
  95     var_Create( p_input, "chapter", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
  96     text.psz_string = _("Chapter");
  97     var_Change( p_input, "chapter", VLC_VAR_SETTEXT, &text, NULL );
  98     var_Create( p_input, "navigation", VLC_VAR_VARIABLE | VLC_VAR_HASCHOICE );
  99     text.psz_string = _("Navigation");
 100     var_Change( p_input, "navigation", VLC_VAR_SETTEXT, &text, NULL );
 101     var_Create( p_input, "video-es", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
 102     text.psz_string = _("Video track");
 103     var_Change( p_input, "video-es", VLC_VAR_SETTEXT, &text, NULL );
 104     var_Create( p_input, "audio-es", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
 105     text.psz_string = _("Audio track");
 106     var_Change( p_input, "audio-es", VLC_VAR_SETTEXT, &text, NULL );
 107     var_Create( p_input, "spu-es", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
 108     text.psz_string = _("Subtitle track");
 109     var_Change( p_input, "spu-es", VLC_VAR_SETTEXT, &text, NULL );
 110
 111     var_AddCallback( p_input, "program", ProgramCallback, NULL );
 112     var_AddCallback( p_input, "title", TitleCallback, NULL );
 113     var_AddCallback( p_input, "chapter", ChapterCallback, NULL );
 114     var_AddCallback( p_input, "video-es", ESCallback, NULL );
 115     var_AddCallback( p_input, "audio-es", ESCallback, NULL );
 116     var_AddCallback( p_input, "spu-es", ESCallback, NULL );
 117
 118     return 0;
 119 }
 120
 121 /*****************************************************************************
 122  * input_EndStream: free all stream descriptors
 123  *****************************************************************************/
 124 void input_EndStream( input_thread_t * p_input )
 125 {
 126     /* Free all programs and associated ES, and associated decoders. */
 127     while( p_input->stream.i_pgrm_number )
 128     {
 129         input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 130     }
 131
 132     /* Free standalone ES */
 133     while( p_input->stream.i_es_number )
 134     {
 135         input_DelES( p_input, p_input->stream.pp_es[0] );
 136     }
 137
 138     /* Free all areas */
 139     while( p_input->stream.i_area_nb )
 140     {
 141         input_DelArea( p_input, p_input->stream.pp_areas[0] );
 142     }
 143
 144     /* Free selected ES */
 145     if( p_input->stream.pp_selected_es != NULL )
 146     {
 147         free( p_input->stream.pp_selected_es );
 148     }
 149
 150     if( p_input->stream.p_demux_data != NULL )
 151     {
 152         free( p_input->stream.p_demux_data );
 153     }
 154
 155     /* Free navigation variables */
 156     var_Destroy( p_input, "program" );
 157     var_Destroy( p_input, "title" );
 158     var_Destroy( p_input, "chapter" );
 159     var_Destroy( p_input, "video-es" );
 160     var_Destroy( p_input, "audio-es" );
 161     var_Destroy( p_input, "spu-es" );
 162 }
 163
 164 /*****************************************************************************
 165  * input_FindProgram: returns a pointer to a program described by its ID
 166  *****************************************************************************/
 167 pgrm_descriptor_t * input_FindProgram( input_thread_t * p_input,
 168                                        uint16_t i_pgrm_id )
 169 {
 170     unsigned int i;
 171
 172     for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 173     {
 174         if( p_input->stream.pp_programs[i]->i_number == i_pgrm_id )
 175         {
 176             return p_input->stream.pp_programs[i];
 177         }
 178     }
 179
 180     return NULL;
 181 }
 182
 183 /*****************************************************************************
 184  * input_AddProgram: add and init a program descriptor
 185  *****************************************************************************
 186  * This program descriptor will be referenced in the given stream descriptor
 187  *****************************************************************************/
 188 pgrm_descriptor_t * input_AddProgram( input_thread_t * p_input,
 189                                       u16 i_pgrm_id, size_t i_data_len )
 190 {
 191     /* Where to add the pgrm */
 192     pgrm_descriptor_t * p_pgrm = malloc( sizeof(pgrm_descriptor_t) );
 193     vlc_value_t val;
 194
 195     if( p_pgrm == NULL )
 196     {
 197         msg_Err( p_input, "out of memory" );
 198         return NULL;
 199     }
 200
 201     /* Init this entry */
 202     p_pgrm->i_number = i_pgrm_id;
 203     p_pgrm->b_is_ok = 0;
 204     p_pgrm->i_version = 0;
 205
 206     p_pgrm->i_es_number = 0;
 207     p_pgrm->pp_es = NULL;
 208
 209     input_ClockInit( p_pgrm );
 210
 211     p_pgrm->i_synchro_state = SYNCHRO_START;
 212
 213     if( i_data_len )
 214     {
 215         p_pgrm->p_demux_data = malloc( i_data_len );
 216         if( p_pgrm->p_demux_data == NULL )
 217         {
 218             msg_Err( p_input, "out of memory" );
 219             return NULL;
 220         }
 221         memset( p_pgrm->p_demux_data, 0, i_data_len );
 222     }
 223     else
 224     {
 225         p_pgrm->p_demux_data = NULL;
 226     }
 227
 228     /* Add an entry to the list of program associated with the stream */
 229     INSERT_ELEM( p_input->stream.pp_programs,
 230                  p_input->stream.i_pgrm_number,
 231                  p_input->stream.i_pgrm_number,
 232                  p_pgrm );
 233
 234     val.i_int = i_pgrm_id;
 235     var_Change( p_input, "program", VLC_VAR_ADDCHOICE, &val, NULL );
 236
 237     return p_pgrm;
 238 }
 239
 240 /*****************************************************************************
 241  * input_DelProgram: destroy a program descriptor
 242  *****************************************************************************
 243  * All ES descriptions referenced in the descriptor will be deleted.
 244  *****************************************************************************/
 245 void input_DelProgram( input_thread_t * p_input, pgrm_descriptor_t * p_pgrm )
 246 {
 247     unsigned int i_pgrm_index;
 248     vlc_value_t val;
 249
 250     /* Find the program in the programs table */
 251     for( i_pgrm_index = 0; i_pgrm_index < p_input->stream.i_pgrm_number;
 252          i_pgrm_index++ )
 253     {
 254         if( p_input->stream.pp_programs[i_pgrm_index] == p_pgrm )
 255             break;
 256     }
 257
 258     /* If the program wasn't found, do nothing */
 259     if( i_pgrm_index == p_input->stream.i_pgrm_number )
 260     {
 261         msg_Err( p_input, "program does not belong to this input" );
 262         return;
 263     }
 264
 265     val.i_int = i_pgrm_index;
 266     var_Change( p_input, "program", VLC_VAR_DELCHOICE, &val, NULL );
 267
 268     /* Free the structures that describe the es that belongs to that program */
 269     while( p_pgrm->i_es_number )
 270     {
 271         input_DelES( p_input, p_pgrm->pp_es[0] );
 272     }
 273
 274     /* Free the demux data */
 275     if( p_pgrm->p_demux_data != NULL )
 276     {
 277         free( p_pgrm->p_demux_data );
 278     }
 279
 280     /* Remove this program from the stream's list of programs */
 281     REMOVE_ELEM( p_input->stream.pp_programs,
 282                  p_input->stream.i_pgrm_number,
 283                  i_pgrm_index );
 284
 285     /* Free the description of this program */
 286     free( p_pgrm );
 287 }
 288
 289 /*****************************************************************************
 290  * input_AddArea: add and init an area descriptor
 291  *****************************************************************************
 292  * This area descriptor will be referenced in the given stream descriptor
 293  *****************************************************************************/
 294 input_area_t * input_AddArea( input_thread_t * p_input,
 295                               uint16_t i_area_id, uint16_t i_part_nb )
 296 {
 297     /* Where to add the pgrm */
 298     input_area_t * p_area = malloc( sizeof(input_area_t) );
 299     vlc_value_t val;
 300     int i;
 301
 302     if( p_area == NULL )
 303     {
 304         msg_Err( p_input, "out of memory" );
 305         return NULL;
 306     }
 307
 308     /* Init this entry */
 309     p_area->i_id = i_area_id;
 310     p_area->i_part_nb = i_part_nb;
 311     p_area->i_part= 0;
 312     p_area->i_start = 0;
 313     p_area->i_size = 0;
 314     p_area->i_tell = 0;
 315     p_area->i_seek = NO_SEEK;
 316
 317     /* Add an entry to the list of program associated with the stream */
 318     INSERT_ELEM( p_input->stream.pp_areas,
 319                  p_input->stream.i_area_nb,
 320                  p_input->stream.i_area_nb,
 321                  p_area );
 322
 323     /* Don't add empty areas */
 324     if( i_part_nb == 0 )
 325         return NULL;
 326
 327     /* Take care of the navigation variables */
 328     val.i_int = i_area_id;
 329     var_Change( p_input, "title", VLC_VAR_ADDCHOICE, &val, NULL );
 330
 331     val.psz_string = malloc( sizeof("title ") + 5 );
 332     if( val.psz_string )
 333     {
 334         vlc_value_t val2;
 335
 336         sprintf( val.psz_string, "title %2i", i_area_id );
 337         var_Destroy( p_input, val.psz_string );
 338         var_Create( p_input, val.psz_string, VLC_VAR_INTEGER |
 339                     VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
 340         var_AddCallback( p_input, val.psz_string, NavigationCallback,
 341                          (void *)(int)i_area_id );
 342
 343         var_Change( p_input, "navigation", VLC_VAR_ADDCHOICE, &val, NULL );
 344
 345         for( i = 1; i <= i_part_nb; i++ )
 346         {
 347             val2.i_int = i;
 348             var_Change( p_input, val.psz_string,
 349                         VLC_VAR_ADDCHOICE, &val2, NULL );
 350         }
 351     }
 352
 353     return p_area;
 354 }
 355
 356 /*****************************************************************************
 357  * input_SetProgram: changes the current program
 358  *****************************************************************************/
 359 int input_SetProgram( input_thread_t * p_input, pgrm_descriptor_t * p_new_prg )
 360 {
 361     unsigned int i_es_index;
 362     int i_required_audio_es;
 363     int i_required_spu_es;
 364     int i_audio_es = 0;
 365     int i_spu_es = 0;
 366     vlc_value_t val;
 367
 368     if ( p_input->stream.p_selected_program )
 369     {
 370         for ( i_es_index = 1 ; /* 0 should be the PMT */
 371                 i_es_index < p_input->stream.p_selected_program->
 372                 i_es_number ;
 373                 i_es_index ++ )
 374         {
 375 #define p_es p_input->stream.p_selected_program->pp_es[i_es_index]
 376             if ( p_es->p_decoder_fifo ) /* if the ES was selected */
 377             {
 378                 input_UnselectES( p_input , p_es );
 379             }
 380 #undef p_es
 381         }
 382     }
 383     /* Get the number of the required audio stream */
 384     if( config_GetInt( p_input, "audio" ) )
 385     {
 386         /* Default is the first one */
 387         i_required_audio_es = config_GetInt( p_input, "audio-channel" );
 388         if( i_required_audio_es < 0 )
 389         {
 390             i_required_audio_es = 1;
 391         }
 392     }
 393     else
 394     {
 395         i_required_audio_es = 0;
 396     }
 397
 398     /* Same thing for subtitles */
 399     if( config_GetInt( p_input, "video" ) )
 400     {
 401         /* for spu, default is none */
 402         i_required_spu_es = config_GetInt( p_input, "spu-channel" );
 403         if( i_required_spu_es < 0 )
 404         {
 405             i_required_spu_es = 0;
 406         }
 407     }
 408     else
 409     {
 410         i_required_spu_es = 0;
 411     }
 412
 413     for( i_es_index = 0 ; i_es_index < p_new_prg->i_es_number ; i_es_index ++ )
 414     {
 415         switch( p_new_prg->pp_es[i_es_index]->i_cat )
 416         {
 417             case VIDEO_ES:
 418                 msg_Dbg( p_input, "selecting ES %x",
 419                          p_new_prg->pp_es[i_es_index]->i_id );
 420                 input_SelectES( p_input, p_new_prg->pp_es[i_es_index] );
 421                 break;
 422             case AUDIO_ES:
 423                 i_audio_es += 1;
 424                 if( i_audio_es <= i_required_audio_es )
 425                 {
 426                     msg_Dbg( p_input, "selecting ES %x",
 427                              p_new_prg->pp_es[i_es_index]->i_id );
 428                     input_SelectES( p_input, p_new_prg->pp_es[i_es_index]);
 429                 }
 430                 break;
 431             /* Not sure this one is fully specification-compliant */
 432             case SPU_ES :
 433                 i_spu_es += 1;
 434                 if( i_spu_es <= i_required_spu_es )
 435                 {
 436                     msg_Dbg( p_input, "selecting ES %x",
 437                              p_new_prg->pp_es[i_es_index]->i_id );
 438                     input_SelectES( p_input, p_new_prg->pp_es[i_es_index] );
 439                 }
 440             break;
 441             default :
 442                 msg_Dbg( p_input, "ES %x has unknown type",
 443                          p_new_prg->pp_es[i_es_index]->i_id );
 444                 break;
 445         }
 446
 447     }
 448
 449
 450     p_input->stream.p_selected_program = p_new_prg;
 451
 452     /* Update the navigation variables without triggering a callback */
 453     val.i_int = p_new_prg->i_number;
 454     var_Change( p_input, "program", VLC_VAR_SETVALUE, &val, NULL );
 455
 456     return( 0 );
 457 }
 458
 459 /*****************************************************************************
 460  * input_DelArea: destroy a area descriptor
 461  *****************************************************************************
 462  * All ES descriptions referenced in the descriptor will be deleted.
 463  *****************************************************************************/
 464 void input_DelArea( input_thread_t * p_input, input_area_t * p_area )
 465 {
 466     unsigned int i_area_index;
 467     vlc_value_t val;
 468
 469     /* Find the area in the areas table */
 470     for( i_area_index = 0; i_area_index < p_input->stream.i_area_nb;
 471          i_area_index++ )
 472     {
 473         if( p_input->stream.pp_areas[i_area_index] == p_area )
 474             break;
 475     }
 476
 477     /* If the area wasn't found, do nothing */
 478     if( i_area_index == p_input->stream.i_area_nb )
 479     {
 480         msg_Err( p_input, "area does not belong to this input" );
 481         return;
 482     }
 483
 484     /* Take care of the navigation variables */
 485     val.psz_string = malloc( sizeof("title ") + 5 );
 486     if( val.psz_string )
 487     {
 488         sprintf( val.psz_string, "title %i", p_area->i_id );
 489         var_Change( p_input, "navigation", VLC_VAR_DELCHOICE, &val, NULL );
 490         var_Destroy( p_input, val.psz_string );
 491     }
 492
 493     /* Remove this area from the stream's list of areas */
 494     REMOVE_ELEM( p_input->stream.pp_areas,
 495                  p_input->stream.i_area_nb,
 496                  i_area_index );
 497
 498     /* Free the description of this area */
 499     free( p_area );
 500 }
 501
 502
 503 /*****************************************************************************
 504  * input_FindES: returns a pointer to an ES described by its ID
 505  *****************************************************************************/
 506 es_descriptor_t * input_FindES( input_thread_t * p_input, uint16_t i_es_id )
 507 {
 508     unsigned int i;
 509
 510     for( i = 0; i < p_input->stream.i_es_number; i++ )
 511     {
 512         if( p_input->stream.pp_es[i]->i_id == i_es_id )
 513         {
 514             return p_input->stream.pp_es[i];
 515         }
 516     }
 517
 518     return NULL;
 519 }
 520
 521 /*****************************************************************************
 522  * input_AddES:
 523  *****************************************************************************
 524  * Reserve a slot in the table of ES descriptors for the ES and add it to the
 525  * list of ES of p_pgrm. If p_pgrm if NULL, then the ES is considered as stand
 526  * alone (PSI ?)
 527  *****************************************************************************/
 528 es_descriptor_t * input_AddES( input_thread_t * p_input,
 529                                pgrm_descriptor_t * p_pgrm, u16 i_es_id,
 530                                int i_category, char const *psz_desc,
 531                                size_t i_data_len )
 532 {
 533     es_descriptor_t * p_es;
 534     vlc_value_t val, text;
 535     char *psz_var = NULL;
 536
 537     p_es = (es_descriptor_t *)malloc( sizeof(es_descriptor_t) );
 538     if( p_es == NULL )
 539     {
 540         msg_Err( p_input, "out of memory" );
 541         return( NULL);
 542     }
 543
 544     INSERT_ELEM( p_input->stream.pp_es,
 545                  p_input->stream.i_es_number,
 546                  p_input->stream.i_es_number,
 547                  p_es );
 548
 549     /* Init its values */
 550     p_es->i_id = i_es_id;
 551     p_es->psz_desc = psz_desc ? strdup( psz_desc ) : NULL;
 552     p_es->p_pes = NULL;
 553     p_es->p_decoder_fifo = NULL;
 554     p_es->i_cat = i_category;
 555     p_es->i_demux_fd = 0;
 556     p_es->c_packets = 0;
 557     p_es->c_invalid_packets = 0;
 558     p_es->b_force_decoder = VLC_FALSE;
 559
 560     if( i_data_len )
 561     {
 562         p_es->p_demux_data = malloc( i_data_len );
 563         if( p_es->p_demux_data == NULL )
 564         {
 565             msg_Err( p_input, "out of memory" );
 566             return( NULL );
 567         }
 568         memset( p_es->p_demux_data, 0, i_data_len );
 569     }
 570     else
 571     {
 572         p_es->p_demux_data = NULL;
 573     }
 574     p_es->p_waveformatex     = NULL;
 575     p_es->p_bitmapinfoheader = NULL;
 576
 577     /* Add this ES to the program definition if one is given */
 578     if( p_pgrm )
 579     {
 580         INSERT_ELEM( p_pgrm->pp_es,
 581                      p_pgrm->i_es_number,
 582                      p_pgrm->i_es_number,
 583                      p_es );
 584         p_es->p_pgrm = p_pgrm;
 585     }
 586     else
 587     {
 588         p_es->p_pgrm = NULL;
 589     }
 590
 591     switch( i_category )
 592     {
 593     case AUDIO_ES:
 594         psz_var = "audio-es";
 595         break;
 596     case SPU_ES:
 597         psz_var = "spu-es";
 598         break;
 599     case VIDEO_ES:
 600         psz_var = "video-es";
 601         break;
 602     }
 603
 604     if( psz_var )
 605     {
 606         val.i_int = p_es->i_id;
 607         text.psz_string = (char *)psz_desc;
 608         var_Change( p_input, psz_var, VLC_VAR_ADDCHOICE, &val, &text );
 609     }
 610
 611     return p_es;
 612 }
 613
 614 /*****************************************************************************
 615  * input_DelES:
 616  *****************************************************************************/
 617 void input_DelES( input_thread_t * p_input, es_descriptor_t * p_es )
 618 {
 619     unsigned int            i_index, i_es_index;
 620     pgrm_descriptor_t *     p_pgrm;
 621     char *                  psz_var;
 622     vlc_value_t             val;
 623
 624     /* Find the ES in the ES table */
 625     for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
 626          i_es_index++ )
 627     {
 628         if( p_input->stream.pp_es[i_es_index] == p_es )
 629             break;
 630     }
 631
 632     /* If the ES wasn't found, do nothing */
 633     if( i_es_index == p_input->stream.i_es_number )
 634     {
 635         msg_Err( p_input, "ES does not belong to this input" );
 636         return;
 637     }
 638
 639     /* Remove es from its associated variable */
 640     switch( p_es->i_cat )
 641     {
 642     case AUDIO_ES:
 643         psz_var = "audio-es";
 644         break;
 645     case SPU_ES:
 646         psz_var = "spu-es";
 647         break;
 648     case VIDEO_ES:
 649     default:
 650         psz_var = "video-es";
 651         break;
 652     }
 653     val.i_int = p_es->i_id;
 654     var_Change( p_input, psz_var, VLC_VAR_DELCHOICE, &val, NULL );
 655
 656     /* Kill associated decoder, if any. */
 657     if( p_es->p_decoder_fifo != NULL )
 658     {
 659         input_EndDecoder( p_input, p_es );
 660     }
 661
 662     /* Remove this ES from the description of the program if it is associated
 663      * to one */
 664     p_pgrm = p_es->p_pgrm;
 665     if( p_pgrm )
 666     {
 667         for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
 668         {
 669             if( p_pgrm->pp_es[i_index] == p_es )
 670             {
 671                 REMOVE_ELEM( p_pgrm->pp_es,
 672                              p_pgrm->i_es_number,
 673                              i_index );
 674                 break;
 675             }
 676         }
 677     }
 678
 679     /* Free the demux data */
 680     if( p_es->p_demux_data != NULL )
 681     {
 682         free( p_es->p_demux_data );
 683     }
 684     if( p_es->p_waveformatex )
 685     {
 686         free( p_es->p_waveformatex );
 687     }
 688     if( p_es->p_bitmapinfoheader )
 689     {
 690         free( p_es->p_bitmapinfoheader );
 691     }
 692
 693     /* Free the description string */
 694     if( p_es->psz_desc != NULL )
 695     {
 696         free( p_es->psz_desc );
 697     }
 698
 699     /* Find the ES in the ES table */
 700     for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
 701          i_es_index++ )
 702     {
 703         if( p_input->stream.pp_es[i_es_index] == p_es )
 704             break;
 705     }
 706
 707     /* Remove this ES from the stream's list of ES */
 708     REMOVE_ELEM( p_input->stream.pp_es,
 709                  p_input->stream.i_es_number,
 710                  i_es_index );
 711
 712     /* Free the ES */
 713     free( p_es );
 714 }
 715
 716 /*****************************************************************************
 717  * input_SelectES: selects an ES and spawns the associated decoder
 718  *****************************************************************************
 719  * Remember we are still supposed to have stream_lock when entering this
 720  * function ?
 721  *****************************************************************************/
 722 int input_SelectES( input_thread_t * p_input, es_descriptor_t * p_es )
 723 {
 724     vlc_value_t val;
 725
 726     if( p_es == NULL )
 727     {
 728         msg_Err( p_input, "nothing to do in input_SelectES" );
 729         return -1;
 730     }
 731
 732     if( ((p_es->i_cat == VIDEO_ES) || (p_es->i_cat == SPU_ES))
 733         && !config_GetInt( p_input, "video" ) )
 734     {
 735         msg_Dbg( p_input,
 736                  "video is disabled, not selecting ES 0x%x", p_es->i_id );
 737         return -1;
 738     }
 739
 740     if( (p_es->i_cat == AUDIO_ES) && !config_GetInt( p_input, "audio" ) )
 741     {
 742         msg_Dbg( p_input,
 743                  "audio is disabled, not selecting ES 0x%x", p_es->i_id );
 744         return -1;
 745     }
 746
 747     msg_Dbg( p_input, "selecting ES 0x%x", p_es->i_id );
 748
 749     if( p_es->p_decoder_fifo != NULL )
 750     {
 751         msg_Err( p_input, "ES 0x%x is already selected", p_es->i_id );
 752         return -1;
 753     }
 754
 755     /* Release the lock, not to block the input thread during
 756      * the creation of the thread. */
 757     vlc_mutex_unlock( &p_input->stream.stream_lock );
 758     p_es->p_decoder_fifo = input_RunDecoder( p_input, p_es );
 759     vlc_mutex_lock( &p_input->stream.stream_lock );
 760
 761     if( p_es->p_decoder_fifo == NULL )
 762     {
 763         return -1;
 764     }
 765
 766     /* Update the es variable without triggering a callback */
 767     val.i_int = p_es->i_id;
 768     var_Change( p_input, "audio-es", VLC_VAR_SETVALUE, &val, NULL );
 769
 770     return 0;
 771 }
 772
 773 /*****************************************************************************
 774  * input_UnselectES: removes an ES from the list of selected ES
 775  *****************************************************************************/
 776 int input_UnselectES( input_thread_t * p_input, es_descriptor_t * p_es )
 777 {
 778
 779     unsigned int i_index = 0;
 780
 781     if( p_es == NULL )
 782     {
 783         msg_Err( p_input, "nothing to do in input_UnselectES" );
 784         return -1;
 785     }
 786
 787     msg_Dbg( p_input, "unselecting ES 0x%x", p_es->i_id );
 788
 789     if( p_es->p_decoder_fifo == NULL )
 790     {
 791         msg_Err( p_input, "ES 0x%x is not selected", p_es->i_id );
 792         return( -1 );
 793     }
 794
 795     input_EndDecoder( p_input, p_es );
 796     p_es->p_pes = NULL;
 797
 798     if( ( p_es->p_decoder_fifo == NULL ) &&
 799         ( p_input->stream.i_selected_es_number > 0 ) )
 800     {
 801         while( ( i_index < p_input->stream.i_selected_es_number - 1 ) &&
 802                ( p_input->stream.pp_selected_es[i_index] != p_es ) )
 803         {
 804             i_index++;
 805         }
 806
 807         /* XXX: no need to memmove, we have unsorted data */
 808         REMOVE_ELEM( p_input->stream.pp_selected_es,
 809                      p_input->stream.i_selected_es_number,
 810                      i_index );
 811
 812         if( p_input->stream.i_selected_es_number == 0 )
 813         {
 814             msg_Dbg( p_input, "no more selected ES" );
 815             return 1;
 816         }
 817     }
 818
 819     return 0;
 820 }
 821
 822 /*****************************************************************************
 823  * Navigation callback: a bunch of navigation variables are used as an
 824  *  alternative to the navigation API.
 825  *****************************************************************************/
 826 static int ProgramCallback( vlc_object_t *p_this, char const *psz_cmd,
 827                   vlc_value_t oldval, vlc_value_t newval, void *p_data )
 828 {
 829     input_thread_t *p_input = (input_thread_t *)p_this;
 830
 831     if( oldval.i_int == newval.i_int )
 832        return VLC_SUCCESS;
 833
 834     vlc_mutex_lock( &p_input->stream.stream_lock );
 835     if( ( newval.i_int > 0 ) )
 836     {
 837         vlc_mutex_unlock( &p_input->stream.stream_lock );
 838         input_ChangeProgram( p_input, (uint16_t)newval.i_int );
 839         input_SetStatus( p_input, INPUT_STATUS_PLAY );
 840         vlc_mutex_lock( &p_input->stream.stream_lock );
 841     }
 842     vlc_mutex_unlock( &p_input->stream.stream_lock );
 843
 844     return VLC_SUCCESS;
 845 }
 846
 847 static int TitleCallback( vlc_object_t *p_this, char const *psz_cmd,
 848                   vlc_value_t oldval, vlc_value_t newval, void *p_data )
 849 {
 850     input_thread_t *p_input = (input_thread_t *)p_this;
 851     input_area_t *p_area;
 852
 853     if( oldval.i_int == newval.i_int )
 854        return VLC_SUCCESS;
 855
 856     /* Sanity check should have already be done by var_Set(). */
 857     vlc_mutex_lock( &p_input->stream.stream_lock );
 858     p_area = p_input->stream.pp_areas[newval.i_int];
 859     p_area->i_part = 1;
 860     vlc_mutex_unlock( &p_input->stream.stream_lock );
 861     input_ChangeArea( p_input, p_area );
 862     input_SetStatus( p_input, INPUT_STATUS_PLAY );
 863
 864     return VLC_SUCCESS;
 865 }
 866
 867 static int ChapterCallback( vlc_object_t *p_this, char const *psz_cmd,
 868                   vlc_value_t oldval, vlc_value_t newval, void *p_data )
 869 {
 870     input_thread_t *p_input = (input_thread_t *)p_this;
 871     input_area_t *p_area;
 872
 873     if( oldval.i_int == newval.i_int )
 874        return VLC_SUCCESS;
 875
 876     /* Sanity check will have already be done by var_Set(). */
 877     vlc_mutex_lock( &p_input->stream.stream_lock );
 878     p_area = p_input->stream.p_selected_area;
 879     p_input->stream.p_selected_area->i_part = newval.i_int;
 880     vlc_mutex_unlock( &p_input->stream.stream_lock );
 881
 882     input_ChangeArea( p_input, p_area );
 883     input_SetStatus( p_input, INPUT_STATUS_PLAY );
 884
 885     return VLC_SUCCESS;
 886 }
 887
 888 static int NavigationCallback( vlc_object_t *p_this, char const *psz_cmd,
 889                   vlc_value_t oldval, vlc_value_t newval, void *p_data )
 890 {
 891     input_thread_t *p_input = (input_thread_t *)p_this;
 892     uint16_t i_area_id = (int)p_data;
 893
 894     vlc_mutex_lock( &p_input->stream.stream_lock );
 895
 896     if( p_input->stream.p_selected_area->i_id == i_area_id &&
 897         oldval.i_int == newval.i_int )
 898     {
 899         /* Nothing to do */
 900         vlc_mutex_unlock( &p_input->stream.stream_lock );
 901         return VLC_SUCCESS;
 902     }
 903
 904     if( ( i_area_id < p_input->stream.i_area_nb ) && ( newval.i_int > 0 ) &&
 905         ( (uint16_t)newval.i_int <=
 906           p_input->stream.pp_areas[i_area_id]->i_part_nb ) )
 907     {
 908         input_area_t *p_area = p_input->stream.pp_areas[i_area_id];
 909         p_input->stream.p_selected_area->i_part = newval.i_int;
 910         vlc_mutex_unlock( &p_input->stream.stream_lock );
 911         input_ChangeArea( p_input, p_area );
 912         input_SetStatus( p_input, INPUT_STATUS_PLAY );
 913         vlc_mutex_lock( &p_input->stream.stream_lock );
 914     }
 915     vlc_mutex_unlock( &p_input->stream.stream_lock );
 916
 917     return VLC_SUCCESS;
 918 }
 919
 920 static int ESCallback( vlc_object_t *p_this, char const *psz_cmd,
 921                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 922 {
 923     input_thread_t *p_input = (input_thread_t *)p_this;
 924     unsigned int i;
 925
 926     vlc_mutex_lock( &p_input->stream.stream_lock );
 927
 928     /* Unselect old ES */
 929     for( i = 0 ; i < p_input->stream.i_es_number ; i++ )
 930     {
 931         if( p_input->stream.pp_es[i]->i_id == oldval.i_int &&
 932             p_input->stream.pp_es[i]->p_decoder_fifo != NULL )
 933         {
 934             input_UnselectES( p_input, p_input->stream.pp_es[i] );
 935         }
 936     }
 937
 938     /* Select new ES */
 939     for( i = 0 ; i < p_input->stream.i_es_number ; i++ )
 940     {
 941         if( p_input->stream.pp_es[i]->i_id == newval.i_int &&
 942             p_input->stream.pp_es[i]->p_decoder_fifo == NULL )
 943         {
 944             input_SelectES( p_input, p_input->stream.pp_es[i] );
 945         }
 946     }
 947
 948     vlc_mutex_unlock( &p_input->stream.stream_lock );
 949
 950     return VLC_SUCCESS;
 951 }