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) 1999-2001 VideoLAN
   5  * $Id: input_programs.c,v 1.77 2002/03/28 03:53:15 jobi 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 #include <sys/types.h>                                              /* off_t */
  30
  31 #include <videolan/vlc.h>
  32
  33 #include "stream_control.h"
  34 #include "input_ext-intf.h"
  35 #include "input_ext-dec.h"
  36 #include "input_ext-plugins.h"
  37
  38 #include "debug.h"
  39
  40 /*
  41  * NOTICE : all of these functions expect you to have taken the lock on
  42  * p_input->stream.lock
  43  */
  44
  45 /*****************************************************************************
  46  * input_InitStream: init the stream descriptor of the given input
  47  *****************************************************************************/
  48 int input_InitStream( input_thread_t * p_input, size_t i_data_len )
  49 {
  50
  51     p_input->stream.i_stream_id = 0;
  52
  53     /* initialized to 0 since we don't give the signal to the interface
  54      * before the end of input initialization */
  55     p_input->stream.b_changed = 0;
  56     p_input->stream.pp_es = NULL;
  57     p_input->stream.pp_selected_es = NULL;
  58     p_input->stream.p_removed_es = NULL;
  59     p_input->stream.p_newly_selected_es = NULL;
  60     p_input->stream.pp_programs = NULL;
  61     p_input->stream.p_selected_program = NULL;
  62     p_input->stream.p_new_program = NULL;
  63
  64     if( i_data_len )
  65     {
  66         if ( (p_input->stream.p_demux_data = malloc( i_data_len )) == NULL )
  67         {
  68             intf_ErrMsg( "Unable to allocate memory in input_InitStream");
  69             return 1;
  70         }
  71         memset( p_input->stream.p_demux_data, 0, i_data_len );
  72     }
  73     else
  74     {
  75         p_input->stream.p_demux_data = NULL;
  76     }
  77
  78     return 0;
  79 }
  80
  81 /*****************************************************************************
  82  * input_EndStream: free all stream descriptors
  83  *****************************************************************************/
  84 void input_EndStream( input_thread_t * p_input )
  85 {
  86     /* Free all programs and associated ES, and associated decoders. */
  87     while( p_input->stream.i_pgrm_number )
  88     {
  89         input_DelProgram( p_input, p_input->stream.pp_programs[0] );
  90     }
  91
  92     /* Free standalone ES */
  93     while( p_input->stream.i_es_number )
  94     {
  95         input_DelES( p_input, p_input->stream.pp_es[0] );
  96     }
  97
  98     /* Free all areas */
  99     while( p_input->stream.i_area_nb )
 100     {
 101         input_DelArea( p_input, p_input->stream.pp_areas[0] );
 102     }
 103
 104     /* Free selected ES */
 105     if( p_input->stream.pp_selected_es != NULL )
 106     {
 107         free( p_input->stream.pp_selected_es );
 108     }
 109
 110     if( p_input->stream.p_demux_data != NULL )
 111     {
 112         free( p_input->stream.p_demux_data );
 113     }
 114 }
 115
 116 /*****************************************************************************
 117  * input_FindProgram: returns a pointer to a program described by its ID
 118  *****************************************************************************/
 119 pgrm_descriptor_t * input_FindProgram( input_thread_t * p_input, u16 i_pgrm_id )
 120 {
 121     int     i;
 122
 123     for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 124     {
 125         if( p_input->stream.pp_programs[i]->i_number == i_pgrm_id )
 126         {
 127             return p_input->stream.pp_programs[i];
 128         }
 129     }
 130
 131     return( NULL );
 132 }
 133
 134 /*****************************************************************************
 135  * input_AddProgram: add and init a program descriptor
 136  *****************************************************************************
 137  * This program descriptor will be referenced in the given stream descriptor
 138  *****************************************************************************/
 139 pgrm_descriptor_t * input_AddProgram( input_thread_t * p_input,
 140                                       u16 i_pgrm_id, size_t i_data_len )
 141 {
 142     /* Where to add the pgrm */
 143     int i_pgrm_index = p_input->stream.i_pgrm_number;
 144
 145     /* Add an entry to the list of program associated with the stream */
 146     p_input->stream.i_pgrm_number++;
 147     p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
 148                                            p_input->stream.i_pgrm_number
 149                                             * sizeof(pgrm_descriptor_t *) );
 150     if( p_input->stream.pp_programs == NULL )
 151     {
 152         intf_ErrMsg( "Unable to realloc memory in input_AddProgram" );
 153         return( NULL );
 154     }
 155
 156     /* Allocate the structure to store this description */
 157     p_input->stream.pp_programs[i_pgrm_index] =
 158                                         malloc( sizeof(pgrm_descriptor_t) );
 159     if( p_input->stream.pp_programs[i_pgrm_index] == NULL )
 160     {
 161         intf_ErrMsg( "Unable to allocate memory in input_AddProgram" );
 162         return( NULL );
 163     }
 164
 165     /* Init this entry */
 166     p_input->stream.pp_programs[i_pgrm_index]->i_number = i_pgrm_id;
 167     p_input->stream.pp_programs[i_pgrm_index]->b_is_ok = 0;
 168     p_input->stream.pp_programs[i_pgrm_index]->i_version = 0;
 169
 170     p_input->stream.pp_programs[i_pgrm_index]->i_es_number = 0;
 171     p_input->stream.pp_programs[i_pgrm_index]->pp_es = NULL;
 172
 173     input_ClockInit( p_input->stream.pp_programs[i_pgrm_index] );
 174
 175     p_input->stream.pp_programs[i_pgrm_index]->i_synchro_state
 176                                                 = SYNCHRO_START;
 177
 178     if( i_data_len )
 179     {
 180         p_input->stream.pp_programs[i_pgrm_index]->p_demux_data =
 181             malloc( i_data_len );
 182         if( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data == NULL )
 183         {
 184             intf_ErrMsg( "Unable to allocate memory in input_AddProgram" );
 185             return( NULL );
 186         }
 187         memset( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data, 0,
 188                 i_data_len );
 189     }
 190     else
 191     {
 192         p_input->stream.pp_programs[i_pgrm_index]->p_demux_data = NULL;
 193     }
 194
 195     return p_input->stream.pp_programs[i_pgrm_index];
 196 }
 197
 198 /*****************************************************************************
 199  * input_DelProgram: destroy a program descriptor
 200  *****************************************************************************
 201  * All ES descriptions referenced in the descriptor will be deleted.
 202  *****************************************************************************/
 203 void input_DelProgram( input_thread_t * p_input, pgrm_descriptor_t * p_pgrm )
 204 {
 205     int i_pgrm_index;
 206
 207     ASSERT( p_pgrm );
 208
 209     /* Free the structures that describe the es that belongs to that program */
 210     while( p_pgrm->i_es_number )
 211     {
 212         input_DelES( p_input, p_pgrm->pp_es[0] );
 213     }
 214
 215     /* Free the demux data */
 216     if( p_pgrm->p_demux_data != NULL )
 217     {
 218         free( p_pgrm->p_demux_data );
 219     }
 220
 221     /* Find the program in the programs table */
 222     for( i_pgrm_index = 0; i_pgrm_index < p_input->stream.i_pgrm_number;
 223          i_pgrm_index++ )
 224     {
 225         if( p_input->stream.pp_programs[i_pgrm_index] == p_pgrm )
 226             break;
 227     }
 228
 229     /* Remove this program from the stream's list of programs */
 230     p_input->stream.i_pgrm_number--;
 231
 232     p_input->stream.pp_programs[i_pgrm_index] =
 233         p_input->stream.pp_programs[p_input->stream.i_pgrm_number];
 234     p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
 235                                            p_input->stream.i_pgrm_number
 236                                             * sizeof(pgrm_descriptor_t *) );
 237
 238     if( p_input->stream.i_pgrm_number && p_input->stream.pp_programs == NULL)
 239     {
 240         intf_ErrMsg( "input error: unable to realloc program list"
 241                      " in input_DelProgram" );
 242     }
 243
 244     /* Free the description of this program */
 245     free( p_pgrm );
 246 }
 247
 248 /*****************************************************************************
 249  * input_AddArea: add and init an area descriptor
 250  *****************************************************************************
 251  * This area descriptor will be referenced in the given stream descriptor
 252  *****************************************************************************/
 253 input_area_t * input_AddArea( input_thread_t * p_input )
 254 {
 255     /* Where to add the pgrm */
 256     int i_area_index = p_input->stream.i_area_nb;
 257
 258     /* Add an entry to the list of program associated with the stream */
 259     p_input->stream.i_area_nb++;
 260     p_input->stream.pp_areas = realloc( p_input->stream.pp_areas,
 261                                         p_input->stream.i_area_nb
 262                                             * sizeof(input_area_t *) );
 263     if( p_input->stream.pp_areas == NULL )
 264     {
 265         intf_ErrMsg( "Unable to realloc memory in input_AddArea" );
 266         return( NULL );
 267     }
 268
 269     /* Allocate the structure to store this description */
 270     p_input->stream.pp_areas[i_area_index] =
 271                                         malloc( sizeof(input_area_t) );
 272     if( p_input->stream.pp_areas[i_area_index] == NULL )
 273     {
 274         intf_ErrMsg( "Unable to allocate memory in input_AddArea" );
 275         return( NULL );
 276     }
 277
 278     /* Init this entry */
 279     p_input->stream.pp_areas[i_area_index]->i_id = 0;
 280     p_input->stream.pp_areas[i_area_index]->i_start = 0;
 281     p_input->stream.pp_areas[i_area_index]->i_size = 0;
 282     p_input->stream.pp_areas[i_area_index]->i_tell = 0;
 283     p_input->stream.pp_areas[i_area_index]->i_seek = NO_SEEK;
 284     p_input->stream.pp_areas[i_area_index]->i_part_nb = 1;
 285     p_input->stream.pp_areas[i_area_index]->i_part= 0;
 286
 287     return p_input->stream.pp_areas[i_area_index];
 288 }
 289
 290 /*****************************************************************************
 291  * input_SetProgram: changes the current program
 292  *****************************************************************************/
 293 int input_SetProgram( input_thread_t * p_input, pgrm_descriptor_t * p_new_prg )
 294 {
 295     int i_es_index;
 296
 297     if ( p_input->stream.p_selected_program )
 298     {
 299         for ( i_es_index = 0 ;
 300                 i_es_index < p_input->stream.i_selected_es_number;
 301                 i_es_index ++ )
 302         {
 303             intf_WarnMsg( 4, "Unselecting ES %d",
 304                     p_input->stream.pp_selected_es[i_es_index]->i_id );
 305             input_UnselectES( p_input ,
 306                     p_input->stream.pp_selected_es[i_es_index] );
 307         }
 308     }
 309
 310     for (i_es_index = 0 ; i_es_index < p_new_prg->i_es_number ; i_es_index ++ )
 311     {
 312         int i_required_audio_es;
 313         int i_required_spu_es;
 314         int i_audio_es = 0;
 315         int i_spu_es = 0;
 316
 317         /* Get the number of the required audio stream */
 318         if( p_main->b_audio )
 319         {
 320             /* Default is the first one */
 321             i_required_audio_es = config_GetIntVariable( "input_channel" );
 322             if( i_required_audio_es < 0 )
 323             {
 324                 i_required_audio_es = 1;
 325             }
 326         }
 327         else
 328         {
 329             i_required_audio_es = 0;
 330         }
 331
 332         /* Same thing for subtitles */
 333         if( p_main->b_video )
 334         {
 335             /* for spu, default is none */
 336             i_required_spu_es = config_GetIntVariable( "input_subtitle" );
 337             if( i_required_spu_es < 0 )
 338             {
 339                 i_required_spu_es = 0;
 340             }
 341         }
 342         else
 343         {
 344             i_required_spu_es = 0;
 345         }
 346         switch( p_new_prg->pp_es[i_es_index]->i_cat )
 347                     {
 348                         case MPEG1_VIDEO_ES:
 349                         case MPEG2_VIDEO_ES:
 350                             intf_WarnMsg( 4, "Selecting ES %x",
 351                                     p_new_prg->pp_es[i_es_index]->i_id );
 352                             input_SelectES( p_input,
 353                                    p_new_prg->pp_es[i_es_index] );
 354                             break;
 355                         case MPEG1_AUDIO_ES:
 356                         case MPEG2_AUDIO_ES:
 357                             i_audio_es += 1;
 358                             if( i_audio_es == i_required_audio_es )
 359                             {
 360                                 intf_WarnMsg( 4, "Selecting ES %x",
 361                                     p_new_prg->pp_es[i_es_index]->i_id );
 362                                 input_SelectES( p_input,
 363                                     p_new_prg->pp_es[i_es_index]);
 364                             }
 365                             break;
 366                         case LPCM_AUDIO_ES :
 367                         case AC3_AUDIO_ES :
 368                             i_audio_es += 1;
 369                             if( i_audio_es == i_required_audio_es )
 370                             {
 371                                 intf_WarnMsg( 4, "Selecting ES %x",
 372                                     p_new_prg->pp_es[i_es_index]->i_id );
 373                                 input_SelectES( p_input,
 374                                     p_new_prg->pp_es[i_es_index] );
 375                             }
 376                             break;
 377                         /* Not sure this one is fully specification-compliant */
 378                         case DVD_SPU_ES :
 379                             i_spu_es += 1;
 380                             if( i_spu_es == i_required_spu_es )
 381                             {
 382                                 intf_WarnMsg( 4, "Selecting ES %x",
 383                                     p_new_prg->pp_es[i_es_index]->i_id );
 384                                 input_SelectES( p_input,
 385                                     p_new_prg->pp_es[i_es_index] );
 386                             }
 387                             break;
 388                         default :
 389                             break;
 390                     }
 391
 392     }
 393
 394
 395     p_input->stream.p_selected_program = p_new_prg;
 396
 397     return( 0 );
 398 }
 399
 400
 401 /*****************************************************************************
 402  * input_DelArea: destroy a area descriptor
 403  *****************************************************************************
 404  * All ES descriptions referenced in the descriptor will be deleted.
 405  *****************************************************************************/
 406 void input_DelArea( input_thread_t * p_input, input_area_t * p_area )
 407 {
 408     int i_area_index;
 409
 410     ASSERT( p_area );
 411
 412     /* Find the area in the areas table */
 413     for( i_area_index = 0; i_area_index < p_input->stream.i_area_nb;
 414          i_area_index++ )
 415     {
 416         if( p_input->stream.pp_areas[i_area_index] == p_area )
 417             break;
 418     }
 419
 420     /* Remove this area from the stream's list of areas */
 421     p_input->stream.i_area_nb--;
 422
 423     p_input->stream.pp_areas[i_area_index] =
 424         p_input->stream.pp_areas[p_input->stream.i_area_nb];
 425     p_input->stream.pp_areas = realloc( p_input->stream.pp_areas,
 426                                            p_input->stream.i_area_nb
 427                                             * sizeof(input_area_t *) );
 428
 429     if( p_input->stream.i_area_nb && p_input->stream.pp_areas == NULL)
 430     {
 431         intf_ErrMsg( "input error: unable to realloc area list"
 432                      " in input_DelArea" );
 433     }
 434
 435     /* Free the description of this area */
 436     free( p_area );
 437 }
 438
 439
 440 /*****************************************************************************
 441  * input_FindES: returns a pointer to an ES described by its ID
 442  *****************************************************************************/
 443 es_descriptor_t * input_FindES( input_thread_t * p_input, u16 i_es_id )
 444 {
 445     int     i;
 446
 447     for( i = 0; i < p_input->stream.i_es_number; i++ )
 448     {
 449         if( p_input->stream.pp_es[i]->i_id == i_es_id )
 450         {
 451             return p_input->stream.pp_es[i];
 452         }
 453     }
 454
 455     return( NULL );
 456 }
 457
 458 /*****************************************************************************
 459  * input_AddES:
 460  *****************************************************************************
 461  * Reserve a slot in the table of ES descriptors for the ES and add it to the
 462  * list of ES of p_pgrm. If p_pgrm if NULL, then the ES is considered as stand
 463  * alone (PSI ?)
 464  *****************************************************************************/
 465 es_descriptor_t * input_AddES( input_thread_t * p_input,
 466                                pgrm_descriptor_t * p_pgrm, u16 i_es_id,
 467                                size_t i_data_len )
 468 {
 469     es_descriptor_t * p_es;
 470
 471     p_es = (es_descriptor_t *)malloc( sizeof(es_descriptor_t) );
 472     if( p_es == NULL )
 473     {
 474         intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 475         return( NULL);
 476     }
 477     p_input->stream.i_es_number++;
 478     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 479                                      p_input->stream.i_es_number
 480                                       * sizeof(es_descriptor_t *) );
 481     if( p_input->stream.pp_es == NULL )
 482     {
 483         intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 484         return( NULL );
 485     }
 486     p_input->stream.pp_es[p_input->stream.i_es_number - 1] = p_es;
 487
 488     /* Init its values */
 489     p_es->i_id = i_es_id;
 490     p_es->psz_desc[0] = '\0';
 491     p_es->p_pes = NULL;
 492     p_es->p_decoder_fifo = NULL;
 493     p_es->b_audio = 0;
 494     p_es->i_cat = UNKNOWN_ES;
 495 #ifdef HAVE_SATELLITE
 496     p_es->i_dmx_fd = 0;
 497 #endif
 498
 499     if( i_data_len )
 500     {
 501         p_es->p_demux_data = malloc( i_data_len );
 502         if( p_es->p_demux_data == NULL )
 503         {
 504             intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 505             return( NULL );
 506         }
 507         memset( p_es->p_demux_data, 0, i_data_len );
 508     }
 509     else
 510     {
 511         p_es->p_demux_data = NULL;
 512     }
 513
 514     /* Add this ES to the program definition if one is given */
 515     if( p_pgrm )
 516     {
 517         p_pgrm->i_es_number++;
 518         p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 519                                  p_pgrm->i_es_number
 520                                   * sizeof(es_descriptor_t *) );
 521         if( p_pgrm->pp_es == NULL )
 522         {
 523             intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 524             return( NULL );
 525         }
 526         p_pgrm->pp_es[p_pgrm->i_es_number - 1] = p_es;
 527         p_es->p_pgrm = p_pgrm;
 528     }
 529     else
 530     {
 531         p_es->p_pgrm = NULL;
 532     }
 533
 534     return p_es;
 535 }
 536
 537 /*****************************************************************************
 538  * input_DelES:
 539  *****************************************************************************/
 540 void input_DelES( input_thread_t * p_input, es_descriptor_t * p_es )
 541 {
 542     int                     i_index, i_es_index;
 543     pgrm_descriptor_t *     p_pgrm;
 544
 545     ASSERT( p_es );
 546     p_pgrm = p_es->p_pgrm;
 547
 548     /* Kill associated decoder, if any. */
 549     if( p_es->p_decoder_fifo != NULL )
 550     {
 551         input_EndDecoder( p_input, p_es );
 552     }
 553
 554     /* Remove this ES from the description of the program if it is associated to
 555      * one */
 556     if( p_pgrm )
 557     {
 558         for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
 559         {
 560             if( p_pgrm->pp_es[i_index] == p_es )
 561             {
 562                 p_pgrm->i_es_number--;
 563                 p_pgrm->pp_es[i_index] = p_pgrm->pp_es[p_pgrm->i_es_number];
 564                 p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 565                                          p_pgrm->i_es_number
 566                                           * sizeof(es_descriptor_t *));
 567                 if( p_pgrm->i_es_number && p_pgrm->pp_es == NULL )
 568                 {
 569                     intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 570                 }
 571                 break;
 572             }
 573         }
 574     }
 575
 576     /* Free the demux data */
 577     if( p_es->p_demux_data != NULL )
 578     {
 579         free( p_es->p_demux_data );
 580     }
 581
 582     /* Find the ES in the ES table */
 583     for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
 584          i_es_index++ )
 585     {
 586         if( p_input->stream.pp_es[i_es_index] == p_es )
 587             break;
 588     }
 589
 590     /* Free the ES */
 591     free( p_es );
 592     p_input->stream.i_es_number--;
 593     p_input->stream.pp_es[i_es_index] =
 594                     p_input->stream.pp_es[p_input->stream.i_es_number];
 595     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 596                                      p_input->stream.i_es_number
 597                                       * sizeof(es_descriptor_t *));
 598     if( p_input->stream.i_es_number && p_input->stream.pp_es == NULL )
 599     {
 600         intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 601     }
 602
 603 }
 604
 605 /*****************************************************************************
 606  * input_SelectES: selects an ES and spawns the associated decoder
 607  *****************************************************************************
 608  * Remember we are still supposed to have stream_lock when entering this
 609  * function ?
 610  *****************************************************************************/
 611 int input_SelectES( input_thread_t * p_input, es_descriptor_t * p_es )
 612 {
 613     if( p_es == NULL )
 614     {
 615         intf_ErrMsg( "input error: nothing to do in input_SelectES" );
 616         return -1;
 617     }
 618
 619     intf_WarnMsg( 4, "input: selecting ES 0x%x", p_es->i_id );
 620
 621     if( p_es->p_decoder_fifo != NULL )
 622     {
 623         intf_ErrMsg( "ES 0x%x is already selected", p_es->i_id );
 624         return( -1 );
 625     }
 626
 627     p_es->thread_id = 0;
 628
 629     switch( p_es->i_type )
 630     {
 631     case AC3_AUDIO_ES:
 632     case MPEG1_AUDIO_ES:
 633     case MPEG2_AUDIO_ES:
 634     case LPCM_AUDIO_ES:
 635         if( p_main->b_audio )
 636         {
 637             /* Release the lock, not to block the input thread during
 638              * the creation of the thread. */
 639             vlc_mutex_unlock( &p_input->stream.stream_lock );
 640             p_es->thread_id = input_RunDecoder( p_input, p_es );
 641             vlc_mutex_lock( &p_input->stream.stream_lock );
 642         }
 643         break;
 644
 645     case MPEG1_VIDEO_ES:
 646     case MPEG2_VIDEO_ES:
 647     case DVD_SPU_ES:
 648         if( p_main->b_video )
 649         {
 650             /* Release the lock, not to block the input thread during
 651              * the creation of the thread. */
 652             vlc_mutex_unlock( &p_input->stream.stream_lock );
 653             p_es->thread_id = input_RunDecoder( p_input, p_es );
 654             vlc_mutex_lock( &p_input->stream.stream_lock );
 655         }
 656         break;
 657
 658     default:
 659         intf_ErrMsg( "Unknown stream type 0x%x", p_es->i_type );
 660         return( -1 );
 661         break;
 662     }
 663
 664     if( p_es->thread_id == 0 )
 665     {
 666         return( -1 );
 667     }
 668
 669     return( 0 );
 670 }
 671
 672 /*****************************************************************************
 673  * input_UnselectES: removes an ES from the list of selected ES
 674  *****************************************************************************/
 675 int input_UnselectES( input_thread_t * p_input, es_descriptor_t * p_es )
 676 {
 677
 678     int     i_index = 0;
 679
 680     if( p_es == NULL )
 681     {
 682         intf_ErrMsg( "Nothing to do in input_UnselectES" );
 683         return -1;
 684     }
 685
 686     intf_WarnMsg( 4, "input: unselecting ES 0x%x", p_es->i_id );
 687
 688     if( p_es->p_decoder_fifo == NULL )
 689     {
 690         intf_ErrMsg( "ES 0x%x is not selected", p_es->i_id );
 691         return( -1 );
 692     }
 693
 694     input_EndDecoder( p_input, p_es );
 695     free( p_es->p_pes );
 696
 697     if( ( p_es->p_decoder_fifo == NULL ) &&
 698         ( p_input->stream.i_selected_es_number > 0 ) )
 699     {
 700         p_input->stream.i_selected_es_number--;
 701
 702         while( ( i_index < p_input->stream.i_selected_es_number ) &&
 703                ( p_input->stream.pp_selected_es[i_index] != p_es ) )
 704         {
 705             i_index++;
 706         }
 707
 708         p_input->stream.pp_selected_es[i_index] =
 709           p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number];
 710
 711         p_input->stream.pp_selected_es = realloc(
 712                                            p_input->stream.pp_selected_es,
 713                                            p_input->stream.i_selected_es_number
 714                                             * sizeof(es_descriptor_t *) );
 715
 716         if( p_input->stream.pp_selected_es == NULL )
 717         {
 718             intf_WarnMsg( 4, "input: no more selected ES in input_UnselectES" );
 719             return( 1 );
 720         }
 721     }
 722
 723     return( 0 );
 724 }