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, 2000 VideoLAN
   5  * $Id: input_programs.c,v 1.37 2001/02/23 12:37:31 massiot 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 "defs.h"
  28
  29 #include <stdlib.h>
  30
  31 #include "config.h"
  32 #include "common.h"
  33 #include "threads.h"
  34 #include "mtime.h"
  35 #include "debug.h"
  36
  37 #include "intf_msg.h"
  38
  39 #include "stream_control.h"
  40 #include "input_ext-intf.h"
  41 #include "input_ext-dec.h"
  42 #include "input.h"
  43
  44 #include "main.h"                                     /* --noaudio --novideo */
  45
  46 /*
  47  * NOTICE : all of these functions expect you to have taken the lock on
  48  * p_input->stream.lock
  49  */
  50
  51 /*****************************************************************************
  52  * input_InitStream: init the stream descriptor of the given input
  53  *****************************************************************************/
  54 int input_InitStream( input_thread_t * p_input, size_t i_data_len )
  55 {
  56     p_input->stream.i_stream_id = 0;
  57     p_input->stream.pp_es = NULL;
  58     p_input->stream.pp_selected_es = NULL;
  59     p_input->stream.pp_programs = NULL;
  60
  61     if( i_data_len )
  62     {
  63         if ( (p_input->stream.p_demux_data = malloc( i_data_len )) == NULL )
  64         {
  65             intf_ErrMsg( "Unable to allocate memory in input_InitStream");
  66             return 1;
  67         }
  68         memset( p_input->stream.p_demux_data, 0, i_data_len );
  69     }
  70
  71     return 0;
  72 }
  73
  74 /*****************************************************************************
  75  * input_EndStream: free all stream descriptors
  76  *****************************************************************************/
  77 void input_EndStream( input_thread_t * p_input )
  78 {
  79     /* Free all programs and associated ES, and associated decoders. */
  80     while( p_input->stream.i_pgrm_number )
  81     {
  82         input_DelProgram( p_input, p_input->stream.pp_programs[0] );
  83     }
  84
  85     /* Free standalone ES */
  86     while( p_input->stream.i_es_number )
  87     {
  88         input_DelES( p_input, p_input->stream.pp_es[0] );
  89     }
  90 }
  91
  92 /*****************************************************************************
  93  * input_FindProgram: returns a pointer to a program described by its ID
  94  *****************************************************************************/
  95 pgrm_descriptor_t * input_FindProgram( input_thread_t * p_input, u16 i_pgrm_id )
  96 {
  97     int     i;
  98
  99     for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 100     {
 101         if( p_input->stream.pp_programs[i]->i_number == i_pgrm_id )
 102         {
 103             return p_input->stream.pp_programs[i];
 104         }
 105     }
 106
 107     return( NULL );
 108 }
 109
 110 /*****************************************************************************
 111  * input_AddProgram: add and init a program descriptor
 112  *****************************************************************************
 113  * This program descriptor will be referenced in the given stream descriptor
 114  *****************************************************************************/
 115 pgrm_descriptor_t * input_AddProgram( input_thread_t * p_input,
 116                                       u16 i_pgrm_id, size_t i_data_len )
 117 {
 118     /* Where to add the pgrm */
 119     int i_pgrm_index = p_input->stream.i_pgrm_number;
 120
 121     intf_DbgMsg("Adding description for pgrm %d", i_pgrm_id);
 122
 123     /* Add an entry to the list of program associated with the stream */
 124     p_input->stream.i_pgrm_number++;
 125     p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
 126                                            p_input->stream.i_pgrm_number
 127                                             * sizeof(pgrm_descriptor_t *) );
 128     if( p_input->stream.pp_programs == NULL )
 129     {
 130         intf_ErrMsg( "Unable to realloc memory in input_AddProgram" );
 131         return( NULL );
 132     }
 133
 134     /* Allocate the structure to store this description */
 135     p_input->stream.pp_programs[i_pgrm_index] =
 136                                         malloc( sizeof(pgrm_descriptor_t) );
 137     if( p_input->stream.pp_programs[i_pgrm_index] == NULL )
 138     {
 139         intf_ErrMsg( "Unable to allocate memory in input_AddProgram" );
 140         return( NULL );
 141     }
 142
 143     /* Init this entry */
 144     p_input->stream.pp_programs[i_pgrm_index]->i_number = i_pgrm_id;
 145     p_input->stream.pp_programs[i_pgrm_index]->b_is_ok = 0;
 146     p_input->stream.pp_programs[i_pgrm_index]->i_version = 0;
 147
 148     p_input->stream.pp_programs[i_pgrm_index]->i_es_number = 0;
 149     p_input->stream.pp_programs[i_pgrm_index]->pp_es = NULL;
 150
 151     input_ClockInit( p_input->stream.pp_programs[i_pgrm_index] );
 152
 153     p_input->stream.pp_programs[i_pgrm_index]->i_synchro_state
 154                                                 = SYNCHRO_START;
 155
 156     p_input->stream.pp_programs[i_pgrm_index]->p_vout
 157                                             = p_input->p_default_vout;
 158     p_input->stream.pp_programs[i_pgrm_index]->p_aout
 159                                             = p_input->p_default_aout;
 160
 161     if( i_data_len )
 162     {
 163         p_input->stream.pp_programs[i_pgrm_index]->p_demux_data =
 164             malloc( i_data_len );
 165         if( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data == NULL )
 166         {
 167             intf_ErrMsg( "Unable to allocate memory in input_AddProgram" );
 168             return( NULL );
 169         }
 170         memset( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data, 0,
 171                 i_data_len );
 172     }
 173
 174     return p_input->stream.pp_programs[i_pgrm_index];
 175 }
 176
 177 /*****************************************************************************
 178  * input_DelProgram: destroy a program descriptor
 179  *****************************************************************************
 180  * All ES descriptions referenced in the descriptor will be deleted.
 181  *****************************************************************************/
 182 void input_DelProgram( input_thread_t * p_input, pgrm_descriptor_t * p_pgrm )
 183 {
 184     int i_pgrm_index;
 185
 186     ASSERT( p_pgrm );
 187
 188     intf_DbgMsg("Deleting description for pgrm %d", p_pgrm->i_number);
 189
 190     /* Free the structures that describe the es that belongs to that program */
 191     while( p_pgrm->i_es_number )
 192     {
 193         input_DelES( p_input, p_pgrm->pp_es[0] );
 194     }
 195
 196     /* Free the demux data */
 197     if( p_pgrm->p_demux_data != NULL )
 198     {
 199         free( p_pgrm->p_demux_data );
 200     }
 201
 202     /* Find the program in the programs table */
 203     for( i_pgrm_index = 0; i_pgrm_index < p_input->stream.i_pgrm_number;
 204          i_pgrm_index++ )
 205     {
 206         if( p_input->stream.pp_programs[i_pgrm_index] == p_pgrm )
 207             break;
 208     }
 209
 210     /* Remove this program from the stream's list of programs */
 211     p_input->stream.i_pgrm_number--;
 212
 213     p_input->stream.pp_programs[i_pgrm_index] =
 214         p_input->stream.pp_programs[p_input->stream.i_pgrm_number];
 215     p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
 216                                            p_input->stream.i_pgrm_number
 217                                             * sizeof(pgrm_descriptor_t *) );
 218
 219     if( p_input->stream.i_pgrm_number && p_input->stream.pp_programs == NULL)
 220     {
 221         intf_ErrMsg( "input error: unable to realloc program list"
 222                      " in input_DelProgram" );
 223     }
 224
 225     /* Free the description of this program */
 226     free( p_pgrm );
 227 }
 228
 229 /*****************************************************************************
 230  * input_AddArea: add and init an area descriptor
 231  *****************************************************************************
 232  * This area descriptor will be referenced in the given stream descriptor
 233  *****************************************************************************/
 234 input_area_t * input_AddArea( input_thread_t * p_input )
 235 {
 236     /* Where to add the pgrm */
 237     int i_area_index = p_input->stream.i_area_nb;
 238
 239     intf_DbgMsg("Adding description for area %d", i_area_index );
 240
 241     /* Add an entry to the list of program associated with the stream */
 242     p_input->stream.i_area_nb++;
 243     p_input->stream.pp_areas = realloc( p_input->stream.pp_areas,
 244                                         p_input->stream.i_area_nb
 245                                             * sizeof(input_area_t *) );
 246     if( p_input->stream.pp_areas == NULL )
 247     {
 248         intf_ErrMsg( "Unable to realloc memory in input_AddArea" );
 249         return( NULL );
 250     }
 251
 252     /* Allocate the structure to store this description */
 253     p_input->stream.pp_areas[i_area_index] =
 254                                         malloc( sizeof(input_area_t) );
 255     if( p_input->stream.pp_areas[i_area_index] == NULL )
 256     {
 257         intf_ErrMsg( "Unable to allocate memory in input_AddArea" );
 258         return( NULL );
 259     }
 260
 261     /* Init this entry */
 262     p_input->stream.pp_areas[i_area_index]->i_id = 0;
 263     p_input->stream.pp_areas[i_area_index]->i_start = 0;
 264     p_input->stream.pp_areas[i_area_index]->i_size = 0;
 265     p_input->stream.pp_areas[i_area_index]->i_tell = 0;
 266     p_input->stream.pp_areas[i_area_index]->i_seek = NO_SEEK;
 267     p_input->stream.pp_areas[i_area_index]->i_part_nb = 0;
 268     p_input->stream.pp_areas[i_area_index]->i_part= 0;
 269
 270     return p_input->stream.pp_areas[i_area_index];
 271 }
 272
 273 /*****************************************************************************
 274  * input_DelArea: destroy a area descriptor
 275  *****************************************************************************
 276  * All ES descriptions referenced in the descriptor will be deleted.
 277  *****************************************************************************/
 278 void input_DelArea( input_thread_t * p_input, input_area_t * p_area )
 279 {
 280     int i_area_index;
 281
 282     ASSERT( p_area );
 283
 284     intf_DbgMsg("Deleting description for area %d", p_area->i_id );
 285
 286     /* Find the area in the areas table */
 287     for( i_area_index = 0; i_area_index < p_input->stream.i_area_nb;
 288          i_area_index++ )
 289     {
 290         if( p_input->stream.pp_areas[i_area_index] == p_area )
 291             break;
 292     }
 293
 294     /* Remove this area from the stream's list of areas */
 295     p_input->stream.i_area_nb--;
 296
 297     p_input->stream.pp_areas[i_area_index] =
 298         p_input->stream.pp_areas[p_input->stream.i_area_nb];
 299     p_input->stream.pp_areas = realloc( p_input->stream.pp_areas,
 300                                            p_input->stream.i_area_nb
 301                                             * sizeof(input_area_t *) );
 302
 303     if( p_input->stream.i_area_nb && p_input->stream.pp_areas == NULL)
 304     {
 305         intf_ErrMsg( "input error: unable to realloc area list"
 306                      " in input_DelArea" );
 307     }
 308
 309     /* Free the description of this area */
 310     free( p_area );
 311 }
 312
 313
 314 /*****************************************************************************
 315  * input_FindES: returns a pointer to an ES described by its ID
 316  *****************************************************************************/
 317 es_descriptor_t * input_FindES( input_thread_t * p_input, u16 i_es_id )
 318 {
 319     int     i;
 320
 321     for( i = 0; i < p_input->stream.i_es_number; i++ )
 322     {
 323         if( p_input->stream.pp_es[i]->i_id == i_es_id )
 324         {
 325             return p_input->stream.pp_es[i];
 326         }
 327     }
 328
 329     return( NULL );
 330 }
 331
 332 /*****************************************************************************
 333  * input_AddES:
 334  *****************************************************************************
 335  * Reserve a slot in the table of ES descriptors for the ES and add it to the
 336  * list of ES of p_pgrm. If p_pgrm if NULL, then the ES is considered as stand
 337  * alone (PSI ?)
 338  *****************************************************************************/
 339 es_descriptor_t * input_AddES( input_thread_t * p_input,
 340                                pgrm_descriptor_t * p_pgrm, u16 i_es_id,
 341                                size_t i_data_len )
 342 {
 343     es_descriptor_t * p_es;
 344
 345     intf_DbgMsg("Adding description for ES 0x%x", i_es_id);
 346
 347     p_es = (es_descriptor_t *)malloc( sizeof(es_descriptor_t) );
 348     if( p_es == NULL )
 349     {
 350         intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 351         return( NULL);
 352     }
 353     p_input->stream.i_es_number++;
 354     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 355                                      p_input->stream.i_es_number
 356                                       * sizeof(es_descriptor_t *) );
 357     if( p_input->stream.pp_es == NULL )
 358     {
 359         intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 360         return( NULL );
 361     }
 362     p_input->stream.pp_es[p_input->stream.i_es_number - 1] = p_es;
 363
 364     /* Init its values */
 365     p_es->i_id = i_es_id;
 366     p_es->p_pes = NULL;
 367     p_es->p_decoder_fifo = NULL;
 368     p_es->b_audio = 0;
 369
 370     if( i_data_len )
 371     {
 372         p_es->p_demux_data = malloc( i_data_len );
 373         if( p_es->p_demux_data == NULL )
 374         {
 375             intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 376             return( NULL );
 377         }
 378         memset( p_es->p_demux_data, 0, i_data_len );
 379     }
 380     else
 381     {
 382         p_es->p_demux_data = NULL;
 383     }
 384
 385     /* Add this ES to the program definition if one is given */
 386     if( p_pgrm )
 387     {
 388         p_pgrm->i_es_number++;
 389         p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 390                                  p_pgrm->i_es_number
 391                                   * sizeof(es_descriptor_t *) );
 392         if( p_pgrm->pp_es == NULL )
 393         {
 394             intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 395             return( NULL );
 396         }
 397         p_pgrm->pp_es[p_pgrm->i_es_number - 1] = p_es;
 398         p_es->p_pgrm = p_pgrm;
 399     }
 400     else
 401     {
 402         p_es->p_pgrm = NULL;
 403     }
 404
 405     return p_es;
 406 }
 407
 408 /*****************************************************************************
 409  * input_DelES:
 410  *****************************************************************************/
 411 void input_DelES( input_thread_t * p_input, es_descriptor_t * p_es )
 412 {
 413     int                     i_index, i_es_index;
 414     pgrm_descriptor_t *     p_pgrm;
 415
 416     ASSERT( p_es );
 417     p_pgrm = p_es->p_pgrm;
 418
 419     /* Kill associated decoder, if any. */
 420     if( p_es->p_decoder_fifo != NULL )
 421     {
 422         input_EndDecoder( p_input, p_es );
 423     }
 424
 425     /* Remove this ES from the description of the program if it is associated to
 426      * one */
 427     if( p_pgrm )
 428     {
 429         for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
 430         {
 431             if( p_pgrm->pp_es[i_index] == p_es )
 432             {
 433                 p_pgrm->i_es_number--;
 434                 p_pgrm->pp_es[i_index] = p_pgrm->pp_es[p_pgrm->i_es_number];
 435                 p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 436                                          p_pgrm->i_es_number
 437                                           * sizeof(es_descriptor_t *));
 438                 if( p_pgrm->i_es_number && p_pgrm->pp_es == NULL )
 439                 {
 440                     intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 441                 }
 442                 break;
 443             }
 444         }
 445     }
 446
 447     /* Free the demux data */
 448     if( p_es->p_demux_data != NULL )
 449     {
 450         free( p_es->p_demux_data );
 451     }
 452
 453     /* Find the ES in the ES table */
 454     for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
 455          i_es_index++ )
 456     {
 457         if( p_input->stream.pp_es[i_es_index] == p_es )
 458             break;
 459     }
 460
 461     /* Free the ES */
 462     free( p_es );
 463     p_input->stream.i_es_number--;
 464     p_input->stream.pp_es[i_es_index] =
 465                     p_input->stream.pp_es[p_input->stream.i_es_number];
 466     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 467                                      p_input->stream.i_es_number
 468                                       * sizeof(es_descriptor_t *));
 469     if( p_input->stream.i_es_number && p_input->stream.pp_es == NULL )
 470     {
 471         intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 472     }
 473
 474 }
 475
 476 /*****************************************************************************
 477  * InitDecConfig: initializes a decoder_config_t
 478  *****************************************************************************/
 479 static int InitDecConfig( input_thread_t * p_input, es_descriptor_t * p_es,
 480                           decoder_config_t * p_config )
 481 {
 482     p_config->i_id = p_es->i_id;
 483     p_config->i_type = p_es->i_type;
 484     p_config->p_stream_ctrl =
 485         &p_input->stream.control;
 486
 487     /* Decoder FIFO */
 488     if( (p_config->p_decoder_fifo =
 489             (decoder_fifo_t *)malloc( sizeof(decoder_fifo_t) )) == NULL )
 490     {
 491         intf_ErrMsg( "Out of memory" );
 492         return( -1 );
 493     }
 494
 495     vlc_mutex_init(&p_config->p_decoder_fifo->data_lock);
 496     vlc_cond_init(&p_config->p_decoder_fifo->data_wait);
 497     p_config->p_decoder_fifo->i_start = p_config->p_decoder_fifo->i_end = 0;
 498     p_config->p_decoder_fifo->b_die = p_config->p_decoder_fifo->b_error = 0;
 499     p_config->p_decoder_fifo->p_packets_mgt = p_input->p_method_data;
 500     p_config->p_decoder_fifo->pf_delete_pes = p_input->pf_delete_pes;
 501     p_es->p_decoder_fifo = p_config->p_decoder_fifo;
 502
 503     p_config->pf_init_bit_stream = InitBitstream;
 504
 505     return( 0 );
 506 }
 507
 508 /*****************************************************************************
 509  * GetVdecConfig: returns a valid vdec_config_t
 510  *****************************************************************************/
 511 static vdec_config_t * GetVdecConfig( input_thread_t * p_input,
 512                                       es_descriptor_t * p_es )
 513 {
 514     vdec_config_t *     p_config;
 515
 516     p_config = (vdec_config_t *)malloc( sizeof(vdec_config_t) );
 517     if( p_config == NULL )
 518     {
 519         intf_ErrMsg( "Unable to allocate memory in GetVdecConfig" );
 520         return( NULL );
 521     }
 522     p_config->p_vout = p_input->p_default_vout;
 523     if( InitDecConfig( p_input, p_es, &p_config->decoder_config ) == -1 )
 524     {
 525         free( p_config );
 526         return( NULL );
 527     }
 528
 529     return( p_config );
 530 }
 531
 532 /*****************************************************************************
 533  * GetAdecConfig: returns a valid adec_config_t
 534  *****************************************************************************/
 535 static adec_config_t * GetAdecConfig( input_thread_t * p_input,
 536                                       es_descriptor_t * p_es )
 537 {
 538     adec_config_t *     p_config;
 539
 540     p_config = (adec_config_t *)malloc( sizeof(adec_config_t));
 541     if( p_config == NULL )
 542     {
 543         intf_ErrMsg( "Unable to allocate memory in GetAdecConfig" );
 544         return( NULL );
 545     }
 546     p_config->p_aout = p_input->p_default_aout;
 547     if( InitDecConfig( p_input, p_es, &p_config->decoder_config ) == -1 )
 548     {
 549         free( p_config );
 550         return( NULL );
 551     }
 552
 553     return( p_config );
 554 }
 555
 556 /*****************************************************************************
 557  * input_SelectES: selects an ES and spawns the associated decoder
 558  *****************************************************************************/
 559 /* FIXME */
 560 vlc_thread_t adec_CreateThread( void * );
 561 vlc_thread_t ac3dec_CreateThread( void * );
 562 vlc_thread_t vpar_CreateThread( void * );
 563 vlc_thread_t spudec_CreateThread( void * );
 564
 565 int input_SelectES( input_thread_t * p_input, es_descriptor_t * p_es )
 566 {
 567     /* FIXME ! */
 568     decoder_capabilities_t  decoder;
 569
 570 #ifdef DEBUG_INPUT
 571     intf_DbgMsg( "Selecting ES 0x%x", p_es->i_id );
 572 #endif
 573
 574     if( p_es->p_decoder_fifo != NULL )
 575     {
 576         intf_ErrMsg( "ES %d is already selected", p_es->i_id );
 577         return( -1 );
 578     }
 579
 580     switch( p_es->i_type )
 581     {
 582     case MPEG1_AUDIO_ES:
 583     case MPEG2_AUDIO_ES:
 584         if( p_main->b_audio )
 585         {
 586             decoder.pf_create_thread = adec_CreateThread;
 587             p_es->thread_id = input_RunDecoder( &decoder,
 588                                     (void *)GetAdecConfig( p_input, p_es ) );
 589         }
 590         break;
 591
 592     case MPEG1_VIDEO_ES:
 593     case MPEG2_VIDEO_ES:
 594         if( p_main->b_video )
 595         {
 596             decoder.pf_create_thread = vpar_CreateThread;
 597             p_es->thread_id = input_RunDecoder( &decoder,
 598                                     (void *)GetVdecConfig( p_input, p_es ) );
 599         }
 600         break;
 601
 602     case AC3_AUDIO_ES:
 603         if( p_main->b_audio )
 604         {
 605             decoder.pf_create_thread = ac3dec_CreateThread;
 606             p_es->thread_id = input_RunDecoder( &decoder,
 607                                     (void *)GetAdecConfig( p_input, p_es ) );
 608         }
 609         break;
 610
 611     case DVD_SPU_ES:
 612         if( p_main->b_video )
 613         {
 614             decoder.pf_create_thread = spudec_CreateThread;
 615             p_es->thread_id = input_RunDecoder( &decoder,
 616                                     (void *)GetVdecConfig( p_input, p_es ) );
 617         }
 618         break;
 619
 620     default:
 621         intf_ErrMsg( "Unknown stream type %d", p_es->i_type );
 622         return( -1 );
 623         break;
 624     }
 625
 626     if( p_es->thread_id == 0 )
 627     {
 628         return( -1 );
 629     }
 630
 631     if( p_es->p_decoder_fifo != NULL )
 632     {
 633         p_input->stream.i_selected_es_number++;
 634         p_input->stream.pp_selected_es = realloc(
 635                                            p_input->stream.pp_selected_es,
 636                                            p_input->stream.i_selected_es_number
 637                                             * sizeof(es_descriptor_t *) );
 638         if( p_input->stream.pp_selected_es == NULL )
 639         {
 640             intf_ErrMsg( "Unable to realloc memory in input_SelectES" );
 641             return(-1);
 642         }
 643         p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number - 1]
 644                 = p_es;
 645     }
 646     return( 0 );
 647 }
 648
 649 /*****************************************************************************
 650  * input_UnSelectES: removes an ES from the list of selected ES
 651  *****************************************************************************/
 652 int input_UnSelectES( input_thread_t * p_input, es_descriptor_t * p_es )
 653 {
 654
 655     int     i_index = 0;
 656
 657 #ifdef DEBUG_INPUT
 658     intf_DbgMsg( "UnSelecting ES 0x%x", p_es->i_id );
 659 #endif
 660
 661     if( p_es->p_decoder_fifo == NULL )
 662     {
 663         intf_ErrMsg( "ES %d is not selected", p_es->i_id );
 664         return( -1 );
 665     }
 666
 667     input_EndDecoder( p_input, p_es );
 668
 669     if( p_es->p_decoder_fifo == NULL )
 670     {
 671         p_input->stream.i_selected_es_number--;
 672
 673         while( ( i_index < p_input->stream.i_selected_es_number ) &&
 674                ( p_input->stream.pp_selected_es[i_index] != p_es ) )
 675         {
 676             i_index++;
 677         }
 678
 679         p_input->stream.pp_selected_es[i_index] =
 680           p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number];
 681
 682         p_input->stream.pp_selected_es = realloc(
 683                                            p_input->stream.pp_selected_es,
 684                                            p_input->stream.i_selected_es_number
 685                                             * sizeof(es_descriptor_t *) );
 686         if( p_input->stream.pp_selected_es == NULL )
 687         {
 688             intf_ErrMsg( "Unable to realloc memory in input_SelectES" );
 689             return(-1);
 690         }
 691     }
 692     return( 0 );
 693 }