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 1.79 2002/04/10 16:26:21 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     int i_required_audio_es;
 297     int i_required_spu_es;
 298     int i_audio_es = 0;
 299     int i_spu_es = 0;
 300
 301     if ( p_input->stream.p_selected_program )
 302     {
 303         for ( i_es_index = 1 ; /* 0 should be the PMT */
 304                 i_es_index < p_input->stream.p_selected_program->
 305                 i_es_number ;
 306                 i_es_index ++ )
 307         {
 308 #define p_es p_input->stream.p_selected_program->pp_es[i_es_index]
 309             if ( p_es->p_decoder_fifo )
 310             {
 311                 input_UnselectES( p_input , p_es );
 312             }
 313 #undef p_es
 314         }
 315     }
 316     /* Get the number of the required audio stream */
 317     if( p_main->b_audio )
 318     {
 319         /* Default is the first one */
 320         i_required_audio_es = config_GetIntVariable( "input_channel" );
 321         if( i_required_audio_es < 0 )
 322         {
 323             i_required_audio_es = 1;
 324         }
 325     }
 326     else
 327     {
 328         i_required_audio_es = 0;
 329     }
 330
 331     /* Same thing for subtitles */
 332     if( p_main->b_video )
 333     {
 334         /* for spu, default is none */
 335         i_required_spu_es = config_GetIntVariable( "input_subtitle" );
 336         if( i_required_spu_es < 0 )
 337         {
 338             i_required_spu_es = 0;
 339         }
 340     }
 341     else
 342     {
 343         i_required_spu_es = 0;
 344     }
 345
 346     for (i_es_index = 0 ; i_es_index < p_new_prg->i_es_number ; i_es_index ++ )
 347     {
 348         switch( p_new_prg->pp_es[i_es_index]->i_cat )
 349                     {
 350                        case VIDEO_ES:
 351                            intf_WarnMsg( 4, "Selecting ES %x",
 352                                     p_new_prg->pp_es[i_es_index]->i_id );
 353                             input_SelectES( p_input,
 354                                    p_new_prg->pp_es[i_es_index] );
 355                             break;
 356                         case 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                         /* Not sure this one is fully specification-compliant */
 367                         case SPU_ES :
 368                             i_spu_es += 1;
 369                             if( i_spu_es <= i_required_spu_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                         default :
 378                             break;
 379                     }
 380
 381     }
 382
 383
 384     p_input->stream.p_selected_program = p_new_prg;
 385
 386     return( 0 );
 387 }
 388
 389
 390 /*****************************************************************************
 391  * input_DelArea: destroy a area descriptor
 392  *****************************************************************************
 393  * All ES descriptions referenced in the descriptor will be deleted.
 394  *****************************************************************************/
 395 void input_DelArea( input_thread_t * p_input, input_area_t * p_area )
 396 {
 397     int i_area_index;
 398
 399     ASSERT( p_area );
 400
 401     /* Find the area in the areas table */
 402     for( i_area_index = 0; i_area_index < p_input->stream.i_area_nb;
 403          i_area_index++ )
 404     {
 405         if( p_input->stream.pp_areas[i_area_index] == p_area )
 406             break;
 407     }
 408
 409     /* Remove this area from the stream's list of areas */
 410     p_input->stream.i_area_nb--;
 411
 412     p_input->stream.pp_areas[i_area_index] =
 413         p_input->stream.pp_areas[p_input->stream.i_area_nb];
 414     p_input->stream.pp_areas = realloc( p_input->stream.pp_areas,
 415                                            p_input->stream.i_area_nb
 416                                             * sizeof(input_area_t *) );
 417
 418     if( p_input->stream.i_area_nb && p_input->stream.pp_areas == NULL)
 419     {
 420         intf_ErrMsg( "input error: unable to realloc area list"
 421                      " in input_DelArea" );
 422     }
 423
 424     /* Free the description of this area */
 425     free( p_area );
 426 }
 427
 428
 429 /*****************************************************************************
 430  * input_FindES: returns a pointer to an ES described by its ID
 431  *****************************************************************************/
 432 es_descriptor_t * input_FindES( input_thread_t * p_input, u16 i_es_id )
 433 {
 434     int     i;
 435
 436     for( i = 0; i < p_input->stream.i_es_number; i++ )
 437     {
 438         if( p_input->stream.pp_es[i]->i_id == i_es_id )
 439         {
 440             return p_input->stream.pp_es[i];
 441         }
 442     }
 443
 444     return( NULL );
 445 }
 446
 447 /*****************************************************************************
 448  * input_AddES:
 449  *****************************************************************************
 450  * Reserve a slot in the table of ES descriptors for the ES and add it to the
 451  * list of ES of p_pgrm. If p_pgrm if NULL, then the ES is considered as stand
 452  * alone (PSI ?)
 453  *****************************************************************************/
 454 es_descriptor_t * input_AddES( input_thread_t * p_input,
 455                                pgrm_descriptor_t * p_pgrm, u16 i_es_id,
 456                                size_t i_data_len )
 457 {
 458     es_descriptor_t * p_es;
 459
 460     p_es = (es_descriptor_t *)malloc( sizeof(es_descriptor_t) );
 461     if( p_es == NULL )
 462     {
 463         intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 464         return( NULL);
 465     }
 466     p_input->stream.i_es_number++;
 467     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 468                                      p_input->stream.i_es_number
 469                                       * sizeof(es_descriptor_t *) );
 470     if( p_input->stream.pp_es == NULL )
 471     {
 472         intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 473         return( NULL );
 474     }
 475     p_input->stream.pp_es[p_input->stream.i_es_number - 1] = p_es;
 476
 477     /* Init its values */
 478     p_es->i_id = i_es_id;
 479     p_es->psz_desc[0] = '\0';
 480     p_es->p_pes = NULL;
 481     p_es->p_decoder_fifo = NULL;
 482     p_es->b_audio = 0;
 483     p_es->i_cat = UNKNOWN_ES;
 484 #ifdef HAVE_SATELLITE
 485     p_es->i_dmx_fd = 0;
 486 #endif
 487
 488     if( i_data_len )
 489     {
 490         p_es->p_demux_data = malloc( i_data_len );
 491         if( p_es->p_demux_data == NULL )
 492         {
 493             intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 494             return( NULL );
 495         }
 496         memset( p_es->p_demux_data, 0, i_data_len );
 497     }
 498     else
 499     {
 500         p_es->p_demux_data = NULL;
 501     }
 502
 503     /* Add this ES to the program definition if one is given */
 504     if( p_pgrm )
 505     {
 506         p_pgrm->i_es_number++;
 507         p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 508                                  p_pgrm->i_es_number
 509                                   * sizeof(es_descriptor_t *) );
 510         if( p_pgrm->pp_es == NULL )
 511         {
 512             intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 513             return( NULL );
 514         }
 515         p_pgrm->pp_es[p_pgrm->i_es_number - 1] = p_es;
 516         p_es->p_pgrm = p_pgrm;
 517     }
 518     else
 519     {
 520         p_es->p_pgrm = NULL;
 521     }
 522
 523     return p_es;
 524 }
 525
 526 /*****************************************************************************
 527  * input_DelES:
 528  *****************************************************************************/
 529 void input_DelES( input_thread_t * p_input, es_descriptor_t * p_es )
 530 {
 531     int                     i_index, i_es_index;
 532     pgrm_descriptor_t *     p_pgrm;
 533
 534     ASSERT( p_es );
 535     p_pgrm = p_es->p_pgrm;
 536
 537     /* Kill associated decoder, if any. */
 538     if( p_es->p_decoder_fifo != NULL )
 539     {
 540         input_EndDecoder( p_input, p_es );
 541     }
 542
 543     /* Remove this ES from the description of the program if it is associated to
 544      * one */
 545     if( p_pgrm )
 546     {
 547         for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
 548         {
 549             if( p_pgrm->pp_es[i_index] == p_es )
 550             {
 551                 p_pgrm->i_es_number--;
 552                 p_pgrm->pp_es[i_index] = p_pgrm->pp_es[p_pgrm->i_es_number];
 553                 p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 554                                          p_pgrm->i_es_number
 555                                           * sizeof(es_descriptor_t *));
 556                 if( p_pgrm->i_es_number && p_pgrm->pp_es == NULL )
 557                 {
 558                     intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 559                 }
 560                 break;
 561             }
 562         }
 563     }
 564
 565     /* Free the demux data */
 566     if( p_es->p_demux_data != NULL )
 567     {
 568         free( p_es->p_demux_data );
 569     }
 570
 571     /* Find the ES in the ES table */
 572     for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
 573          i_es_index++ )
 574     {
 575         if( p_input->stream.pp_es[i_es_index] == p_es )
 576             break;
 577     }
 578
 579     /* Free the ES */
 580     free( p_es );
 581     p_input->stream.i_es_number--;
 582     p_input->stream.pp_es[i_es_index] =
 583                     p_input->stream.pp_es[p_input->stream.i_es_number];
 584     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 585                                      p_input->stream.i_es_number
 586                                       * sizeof(es_descriptor_t *));
 587     if( p_input->stream.i_es_number && p_input->stream.pp_es == NULL )
 588     {
 589         intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 590     }
 591
 592 }
 593
 594 /*****************************************************************************
 595  * input_SelectES: selects an ES and spawns the associated decoder
 596  *****************************************************************************
 597  * Remember we are still supposed to have stream_lock when entering this
 598  * function ?
 599  *****************************************************************************/
 600 int input_SelectES( input_thread_t * p_input, es_descriptor_t * p_es )
 601 {
 602     if( p_es == NULL )
 603     {
 604         intf_ErrMsg( "input error: nothing to do in input_SelectES" );
 605         return -1;
 606     }
 607
 608     intf_WarnMsg( 4, "input: selecting ES 0x%x", p_es->i_id );
 609
 610     if( p_es->p_decoder_fifo != NULL )
 611     {
 612         intf_ErrMsg( "ES 0x%x is already selected", p_es->i_id );
 613         return( -1 );
 614     }
 615
 616     p_es->thread_id = 0;
 617
 618     switch( p_es->i_type )
 619     {
 620     case AC3_AUDIO_ES:
 621     case MPEG1_AUDIO_ES:
 622     case MPEG2_AUDIO_ES:
 623     case LPCM_AUDIO_ES:
 624         if( p_main->b_audio )
 625         {
 626             /* Release the lock, not to block the input thread during
 627              * the creation of the thread. */
 628             vlc_mutex_unlock( &p_input->stream.stream_lock );
 629             p_es->thread_id = input_RunDecoder( p_input, p_es );
 630             vlc_mutex_lock( &p_input->stream.stream_lock );
 631         }
 632         break;
 633
 634     case MPEG1_VIDEO_ES:
 635     case MPEG2_VIDEO_ES:
 636     case DVD_SPU_ES:
 637         if( p_main->b_video )
 638         {
 639             /* Release the lock, not to block the input thread during
 640              * the creation of the thread. */
 641             vlc_mutex_unlock( &p_input->stream.stream_lock );
 642             p_es->thread_id = input_RunDecoder( p_input, p_es );
 643             vlc_mutex_lock( &p_input->stream.stream_lock );
 644         }
 645         break;
 646
 647     default:
 648         intf_ErrMsg( "Unknown stream type 0x%x", p_es->i_type );
 649         return( -1 );
 650         break;
 651     }
 652
 653     if( p_es->thread_id == 0 )
 654     {
 655         return( -1 );
 656     }
 657
 658     return( 0 );
 659 }
 660
 661 /*****************************************************************************
 662  * input_UnselectES: removes an ES from the list of selected ES
 663  *****************************************************************************/
 664 int input_UnselectES( input_thread_t * p_input, es_descriptor_t * p_es )
 665 {
 666
 667     int     i_index = 0;
 668
 669     if( p_es == NULL )
 670     {
 671         intf_ErrMsg( "Nothing to do in input_UnselectES" );
 672         return -1;
 673     }
 674
 675     intf_WarnMsg( 4, "input: unselecting ES 0x%x", p_es->i_id );
 676
 677     if( p_es->p_decoder_fifo == NULL )
 678     {
 679         intf_ErrMsg( "ES 0x%x is not selected", p_es->i_id );
 680         return( -1 );
 681     }
 682
 683     input_EndDecoder( p_input, p_es );
 684     p_es->p_pes = NULL;
 685
 686     if( ( p_es->p_decoder_fifo == NULL ) &&
 687         ( p_input->stream.i_selected_es_number > 0 ) )
 688     {
 689         p_input->stream.i_selected_es_number--;
 690
 691         while( ( i_index < p_input->stream.i_selected_es_number ) &&
 692                ( p_input->stream.pp_selected_es[i_index] != p_es ) )
 693         {
 694             i_index++;
 695         }
 696
 697         p_input->stream.pp_selected_es[i_index] =
 698           p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number];
 699
 700         p_input->stream.pp_selected_es = realloc(
 701                                            p_input->stream.pp_selected_es,
 702                                            p_input->stream.i_selected_es_number
 703                                             * sizeof(es_descriptor_t *) );
 704
 705         if( p_input->stream.pp_selected_es == NULL )
 706         {
 707             intf_WarnMsg( 4, "input: no more selected ES in input_UnselectES" );
 708             return( 1 );
 709         }
 710     }
 711
 712     return( 0 );
 713 }