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 1.42 2001/04/01 07:31:38 stef 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     if( p_input->stream.p_demux_data != NULL )
  92     {
  93         free( p_input->stream.p_demux_data );
  94     }
  95 }
  96
  97 /*****************************************************************************
  98  * input_FindProgram: returns a pointer to a program described by its ID
  99  *****************************************************************************/
 100 pgrm_descriptor_t * input_FindProgram( input_thread_t * p_input, u16 i_pgrm_id )
 101 {
 102     int     i;
 103
 104     for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 105     {
 106         if( p_input->stream.pp_programs[i]->i_number == i_pgrm_id )
 107         {
 108             return p_input->stream.pp_programs[i];
 109         }
 110     }
 111
 112     return( NULL );
 113 }
 114
 115 /*****************************************************************************
 116  * input_AddProgram: add and init a program descriptor
 117  *****************************************************************************
 118  * This program descriptor will be referenced in the given stream descriptor
 119  *****************************************************************************/
 120 pgrm_descriptor_t * input_AddProgram( input_thread_t * p_input,
 121                                       u16 i_pgrm_id, size_t i_data_len )
 122 {
 123     /* Where to add the pgrm */
 124     int i_pgrm_index = p_input->stream.i_pgrm_number;
 125
 126     intf_DbgMsg("Adding description for pgrm %d", i_pgrm_id);
 127
 128     /* Add an entry to the list of program associated with the stream */
 129     p_input->stream.i_pgrm_number++;
 130     p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
 131                                            p_input->stream.i_pgrm_number
 132                                             * sizeof(pgrm_descriptor_t *) );
 133     if( p_input->stream.pp_programs == NULL )
 134     {
 135         intf_ErrMsg( "Unable to realloc memory in input_AddProgram" );
 136         return( NULL );
 137     }
 138
 139     /* Allocate the structure to store this description */
 140     p_input->stream.pp_programs[i_pgrm_index] =
 141                                         malloc( sizeof(pgrm_descriptor_t) );
 142     if( p_input->stream.pp_programs[i_pgrm_index] == NULL )
 143     {
 144         intf_ErrMsg( "Unable to allocate memory in input_AddProgram" );
 145         return( NULL );
 146     }
 147
 148     /* Init this entry */
 149     p_input->stream.pp_programs[i_pgrm_index]->i_number = i_pgrm_id;
 150     p_input->stream.pp_programs[i_pgrm_index]->b_is_ok = 0;
 151     p_input->stream.pp_programs[i_pgrm_index]->i_version = 0;
 152
 153     p_input->stream.pp_programs[i_pgrm_index]->i_es_number = 0;
 154     p_input->stream.pp_programs[i_pgrm_index]->pp_es = NULL;
 155
 156     input_ClockInit( p_input->stream.pp_programs[i_pgrm_index] );
 157
 158     p_input->stream.pp_programs[i_pgrm_index]->i_synchro_state
 159                                                 = SYNCHRO_START;
 160
 161     p_input->stream.pp_programs[i_pgrm_index]->p_vout
 162                                             = p_input->p_default_vout;
 163     p_input->stream.pp_programs[i_pgrm_index]->p_aout
 164                                             = p_input->p_default_aout;
 165
 166     if( i_data_len )
 167     {
 168         p_input->stream.pp_programs[i_pgrm_index]->p_demux_data =
 169             malloc( i_data_len );
 170         if( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data == NULL )
 171         {
 172             intf_ErrMsg( "Unable to allocate memory in input_AddProgram" );
 173             return( NULL );
 174         }
 175         memset( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data, 0,
 176                 i_data_len );
 177     }
 178
 179     return p_input->stream.pp_programs[i_pgrm_index];
 180 }
 181
 182 /*****************************************************************************
 183  * input_DelProgram: destroy a program descriptor
 184  *****************************************************************************
 185  * All ES descriptions referenced in the descriptor will be deleted.
 186  *****************************************************************************/
 187 void input_DelProgram( input_thread_t * p_input, pgrm_descriptor_t * p_pgrm )
 188 {
 189     int i_pgrm_index;
 190
 191     ASSERT( p_pgrm );
 192
 193     intf_DbgMsg("Deleting description for pgrm %d", p_pgrm->i_number);
 194
 195     /* Free the structures that describe the es that belongs to that program */
 196     while( p_pgrm->i_es_number )
 197     {
 198         input_DelES( p_input, p_pgrm->pp_es[0] );
 199     }
 200
 201     /* Free the demux data */
 202     if( p_pgrm->p_demux_data != NULL )
 203     {
 204         free( p_pgrm->p_demux_data );
 205     }
 206
 207     /* Find the program in the programs table */
 208     for( i_pgrm_index = 0; i_pgrm_index < p_input->stream.i_pgrm_number;
 209          i_pgrm_index++ )
 210     {
 211         if( p_input->stream.pp_programs[i_pgrm_index] == p_pgrm )
 212             break;
 213     }
 214
 215     /* Remove this program from the stream's list of programs */
 216     p_input->stream.i_pgrm_number--;
 217
 218     p_input->stream.pp_programs[i_pgrm_index] =
 219         p_input->stream.pp_programs[p_input->stream.i_pgrm_number];
 220     p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
 221                                            p_input->stream.i_pgrm_number
 222                                             * sizeof(pgrm_descriptor_t *) );
 223
 224     if( p_input->stream.i_pgrm_number && p_input->stream.pp_programs == NULL)
 225     {
 226         intf_ErrMsg( "input error: unable to realloc program list"
 227                      " in input_DelProgram" );
 228     }
 229
 230     /* Free the description of this program */
 231     free( p_pgrm );
 232 }
 233
 234 /*****************************************************************************
 235  * input_AddArea: add and init an area descriptor
 236  *****************************************************************************
 237  * This area descriptor will be referenced in the given stream descriptor
 238  *****************************************************************************/
 239 input_area_t * input_AddArea( input_thread_t * p_input )
 240 {
 241     /* Where to add the pgrm */
 242     int i_area_index = p_input->stream.i_area_nb;
 243
 244     intf_DbgMsg("Adding description for area %d", i_area_index );
 245
 246     /* Add an entry to the list of program associated with the stream */
 247     p_input->stream.i_area_nb++;
 248     p_input->stream.pp_areas = realloc( p_input->stream.pp_areas,
 249                                         p_input->stream.i_area_nb
 250                                             * sizeof(input_area_t *) );
 251     if( p_input->stream.pp_areas == NULL )
 252     {
 253         intf_ErrMsg( "Unable to realloc memory in input_AddArea" );
 254         return( NULL );
 255     }
 256
 257     /* Allocate the structure to store this description */
 258     p_input->stream.pp_areas[i_area_index] =
 259                                         malloc( sizeof(input_area_t) );
 260     if( p_input->stream.pp_areas[i_area_index] == NULL )
 261     {
 262         intf_ErrMsg( "Unable to allocate memory in input_AddArea" );
 263         return( NULL );
 264     }
 265
 266     /* Init this entry */
 267     p_input->stream.pp_areas[i_area_index]->i_id = 0;
 268     p_input->stream.pp_areas[i_area_index]->i_start = 0;
 269     p_input->stream.pp_areas[i_area_index]->i_size = 0;
 270     p_input->stream.pp_areas[i_area_index]->i_tell = 0;
 271     p_input->stream.pp_areas[i_area_index]->i_seek = NO_SEEK;
 272     p_input->stream.pp_areas[i_area_index]->i_part_nb = 1;
 273     p_input->stream.pp_areas[i_area_index]->i_part= 0;
 274
 275     return p_input->stream.pp_areas[i_area_index];
 276 }
 277
 278 /*****************************************************************************
 279  * input_DelArea: destroy a area descriptor
 280  *****************************************************************************
 281  * All ES descriptions referenced in the descriptor will be deleted.
 282  *****************************************************************************/
 283 void input_DelArea( input_thread_t * p_input, input_area_t * p_area )
 284 {
 285     int i_area_index;
 286
 287     ASSERT( p_area );
 288
 289     intf_DbgMsg("Deleting description for area %d", p_area->i_id );
 290
 291     /* Find the area in the areas table */
 292     for( i_area_index = 0; i_area_index < p_input->stream.i_area_nb;
 293          i_area_index++ )
 294     {
 295         if( p_input->stream.pp_areas[i_area_index] == p_area )
 296             break;
 297     }
 298
 299     /* Remove this area from the stream's list of areas */
 300     p_input->stream.i_area_nb--;
 301
 302     p_input->stream.pp_areas[i_area_index] =
 303         p_input->stream.pp_areas[p_input->stream.i_area_nb];
 304     p_input->stream.pp_areas = realloc( p_input->stream.pp_areas,
 305                                            p_input->stream.i_area_nb
 306                                             * sizeof(input_area_t *) );
 307
 308     if( p_input->stream.i_area_nb && p_input->stream.pp_areas == NULL)
 309     {
 310         intf_ErrMsg( "input error: unable to realloc area list"
 311                      " in input_DelArea" );
 312     }
 313
 314     /* Free the description of this area */
 315     free( p_area );
 316 }
 317
 318
 319 /*****************************************************************************
 320  * input_FindES: returns a pointer to an ES described by its ID
 321  *****************************************************************************/
 322 es_descriptor_t * input_FindES( input_thread_t * p_input, u16 i_es_id )
 323 {
 324     int     i;
 325
 326     for( i = 0; i < p_input->stream.i_es_number; i++ )
 327     {
 328         if( p_input->stream.pp_es[i]->i_id == i_es_id )
 329         {
 330             return p_input->stream.pp_es[i];
 331         }
 332     }
 333
 334     return( NULL );
 335 }
 336
 337 /*****************************************************************************
 338  * input_AddES:
 339  *****************************************************************************
 340  * Reserve a slot in the table of ES descriptors for the ES and add it to the
 341  * list of ES of p_pgrm. If p_pgrm if NULL, then the ES is considered as stand
 342  * alone (PSI ?)
 343  *****************************************************************************/
 344 es_descriptor_t * input_AddES( input_thread_t * p_input,
 345                                pgrm_descriptor_t * p_pgrm, u16 i_es_id,
 346                                size_t i_data_len )
 347 {
 348     es_descriptor_t * p_es;
 349
 350     intf_DbgMsg("Adding description for ES 0x%x", i_es_id);
 351
 352     p_es = (es_descriptor_t *)malloc( sizeof(es_descriptor_t) );
 353     if( p_es == NULL )
 354     {
 355         intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 356         return( NULL);
 357     }
 358     p_input->stream.i_es_number++;
 359     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 360                                      p_input->stream.i_es_number
 361                                       * sizeof(es_descriptor_t *) );
 362     if( p_input->stream.pp_es == NULL )
 363     {
 364         intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 365         return( NULL );
 366     }
 367     p_input->stream.pp_es[p_input->stream.i_es_number - 1] = p_es;
 368
 369     /* Init its values */
 370     p_es->i_id = i_es_id;
 371     p_es->psz_desc[0] = '\0';
 372     p_es->p_pes = NULL;
 373     p_es->p_decoder_fifo = NULL;
 374     p_es->b_audio = 0;
 375     p_es->b_spu = 0;
 376
 377     if( i_data_len )
 378     {
 379         p_es->p_demux_data = malloc( i_data_len );
 380         if( p_es->p_demux_data == NULL )
 381         {
 382             intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 383             return( NULL );
 384         }
 385         memset( p_es->p_demux_data, 0, i_data_len );
 386     }
 387     else
 388     {
 389         p_es->p_demux_data = NULL;
 390     }
 391
 392     /* Add this ES to the program definition if one is given */
 393     if( p_pgrm )
 394     {
 395         p_pgrm->i_es_number++;
 396         p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 397                                  p_pgrm->i_es_number
 398                                   * sizeof(es_descriptor_t *) );
 399         if( p_pgrm->pp_es == NULL )
 400         {
 401             intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 402             return( NULL );
 403         }
 404         p_pgrm->pp_es[p_pgrm->i_es_number - 1] = p_es;
 405         p_es->p_pgrm = p_pgrm;
 406     }
 407     else
 408     {
 409         p_es->p_pgrm = NULL;
 410     }
 411
 412     return p_es;
 413 }
 414
 415 /*****************************************************************************
 416  * input_DelES:
 417  *****************************************************************************/
 418 void input_DelES( input_thread_t * p_input, es_descriptor_t * p_es )
 419 {
 420     int                     i_index, i_es_index;
 421     pgrm_descriptor_t *     p_pgrm;
 422
 423     ASSERT( p_es );
 424     p_pgrm = p_es->p_pgrm;
 425
 426     /* Kill associated decoder, if any. */
 427     if( p_es->p_decoder_fifo != NULL )
 428     {
 429         input_EndDecoder( p_input, p_es );
 430     }
 431
 432     /* Remove this ES from the description of the program if it is associated to
 433      * one */
 434     if( p_pgrm )
 435     {
 436         for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
 437         {
 438             if( p_pgrm->pp_es[i_index] == p_es )
 439             {
 440                 p_pgrm->i_es_number--;
 441                 p_pgrm->pp_es[i_index] = p_pgrm->pp_es[p_pgrm->i_es_number];
 442                 p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 443                                          p_pgrm->i_es_number
 444                                           * sizeof(es_descriptor_t *));
 445                 if( p_pgrm->i_es_number && p_pgrm->pp_es == NULL )
 446                 {
 447                     intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 448                 }
 449                 break;
 450             }
 451         }
 452     }
 453
 454     /* Free the demux data */
 455     if( p_es->p_demux_data != NULL )
 456     {
 457         free( p_es->p_demux_data );
 458     }
 459
 460     /* Find the ES in the ES table */
 461     for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
 462          i_es_index++ )
 463     {
 464         if( p_input->stream.pp_es[i_es_index] == p_es )
 465             break;
 466     }
 467
 468     /* Free the ES */
 469     free( p_es );
 470     p_input->stream.i_es_number--;
 471     p_input->stream.pp_es[i_es_index] =
 472                     p_input->stream.pp_es[p_input->stream.i_es_number];
 473     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 474                                      p_input->stream.i_es_number
 475                                       * sizeof(es_descriptor_t *));
 476     if( p_input->stream.i_es_number && p_input->stream.pp_es == NULL )
 477     {
 478         intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 479     }
 480
 481 }
 482
 483 /*****************************************************************************
 484  * InitDecConfig: initializes a decoder_config_t
 485  *****************************************************************************/
 486 static int InitDecConfig( input_thread_t * p_input, es_descriptor_t * p_es,
 487                           decoder_config_t * p_config )
 488 {
 489     p_config->i_id = p_es->i_id;
 490     p_config->i_type = p_es->i_type;
 491     p_config->p_stream_ctrl =
 492         &p_input->stream.control;
 493
 494     /* Decoder FIFO */
 495     if( (p_config->p_decoder_fifo =
 496             (decoder_fifo_t *)malloc( sizeof(decoder_fifo_t) )) == NULL )
 497     {
 498         intf_ErrMsg( "Out of memory" );
 499         return( -1 );
 500     }
 501
 502     vlc_mutex_init(&p_config->p_decoder_fifo->data_lock);
 503     vlc_cond_init(&p_config->p_decoder_fifo->data_wait);
 504     p_config->p_decoder_fifo->i_start = p_config->p_decoder_fifo->i_end = 0;
 505     p_config->p_decoder_fifo->b_die = p_config->p_decoder_fifo->b_error = 0;
 506     p_config->p_decoder_fifo->p_packets_mgt = p_input->p_method_data;
 507     p_config->p_decoder_fifo->pf_delete_pes = p_input->pf_delete_pes;
 508     p_es->p_decoder_fifo = p_config->p_decoder_fifo;
 509
 510     p_config->pf_init_bit_stream = InitBitstream;
 511
 512     p_input->stream.i_selected_es_number++;
 513
 514     p_input->stream.pp_selected_es = realloc(
 515                                        p_input->stream.pp_selected_es,
 516                                        p_input->stream.i_selected_es_number
 517                                         * sizeof(es_descriptor_t *) );
 518     if( p_input->stream.pp_selected_es == NULL )
 519     {
 520         intf_ErrMsg( "Unable to realloc memory in input_SelectES" );
 521         return(-1);
 522     }
 523     p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number - 1]
 524             = p_es;
 525
 526     return( 0 );
 527 }
 528
 529 /*****************************************************************************
 530  * GetVdecConfig: returns a valid vdec_config_t
 531  *****************************************************************************/
 532 static vdec_config_t * GetVdecConfig( input_thread_t * p_input,
 533                                       es_descriptor_t * p_es )
 534 {
 535     vdec_config_t *     p_config;
 536
 537     p_config = (vdec_config_t *)malloc( sizeof(vdec_config_t) );
 538     if( p_config == NULL )
 539     {
 540         intf_ErrMsg( "Unable to allocate memory in GetVdecConfig" );
 541         return( NULL );
 542     }
 543     p_config->p_vout = p_input->p_default_vout;
 544     if( InitDecConfig( p_input, p_es, &p_config->decoder_config ) == -1 )
 545     {
 546         free( p_config );
 547         return( NULL );
 548     }
 549
 550     return( p_config );
 551 }
 552
 553 /*****************************************************************************
 554  * GetAdecConfig: returns a valid adec_config_t
 555  *****************************************************************************/
 556 static adec_config_t * GetAdecConfig( input_thread_t * p_input,
 557                                       es_descriptor_t * p_es )
 558 {
 559     adec_config_t *     p_config;
 560
 561     p_config = (adec_config_t *)malloc( sizeof(adec_config_t));
 562     if( p_config == NULL )
 563     {
 564         intf_ErrMsg( "Unable to allocate memory in GetAdecConfig" );
 565         return( NULL );
 566     }
 567     p_config->p_aout = p_input->p_default_aout;
 568     if( InitDecConfig( p_input, p_es, &p_config->decoder_config ) == -1 )
 569     {
 570         free( p_config );
 571         return( NULL );
 572     }
 573
 574     return( p_config );
 575 }
 576
 577 /*****************************************************************************
 578  * input_SelectES: selects an ES and spawns the associated decoder
 579  *****************************************************************************
 580  * Remember we are still supposed to have stream_lock when entering this
 581  * function ?
 582  *****************************************************************************/
 583 /* FIXME */
 584 vlc_thread_t adec_CreateThread( void * );
 585 vlc_thread_t ac3dec_CreateThread( void * );
 586 vlc_thread_t vpar_CreateThread( void * );
 587 vlc_thread_t spudec_CreateThread( void * );
 588
 589 int input_SelectES( input_thread_t * p_input, es_descriptor_t * p_es )
 590 {
 591     /* FIXME ! */
 592     decoder_capabilities_t  decoder;
 593     void *                  p_config;
 594
 595     if( p_es == NULL )
 596     {
 597         intf_ErrMsg( "Nothing to do in input_SelectES" );
 598         return -1;
 599     }
 600
 601 #ifdef DEBUG_INPUT
 602     intf_DbgMsg( "Selecting ES 0x%x", p_es->i_id );
 603 #endif
 604
 605     if( p_es->p_decoder_fifo != NULL )
 606     {
 607         intf_ErrMsg( "ES 0x%x is already selected", p_es->i_id );
 608         return( -1 );
 609     }
 610
 611     switch( p_es->i_type )
 612     {
 613     case MPEG1_AUDIO_ES:
 614     case MPEG2_AUDIO_ES:
 615         if( p_main->b_audio )
 616         {
 617             decoder.pf_create_thread = adec_CreateThread;
 618             p_config = (void *)GetAdecConfig( p_input, p_es );
 619
 620             /* Release the lock, not to block the input thread during
 621              * the creation of the thread. */
 622             vlc_mutex_unlock( &p_input->stream.stream_lock );
 623             p_es->thread_id = input_RunDecoder( &decoder, p_config );
 624             vlc_mutex_lock( &p_input->stream.stream_lock );
 625         }
 626         break;
 627
 628     case MPEG1_VIDEO_ES:
 629     case MPEG2_VIDEO_ES:
 630         if( p_main->b_video )
 631         {
 632             decoder.pf_create_thread = vpar_CreateThread;
 633             p_config = (void *)GetVdecConfig( p_input, p_es );
 634
 635             /* Release the lock, not to block the input thread during
 636              * the creation of the thread. */
 637             vlc_mutex_unlock( &p_input->stream.stream_lock );
 638             p_es->thread_id = input_RunDecoder( &decoder, p_config );
 639             vlc_mutex_lock( &p_input->stream.stream_lock );
 640         }
 641         break;
 642
 643     case AC3_AUDIO_ES:
 644         if( p_main->b_audio )
 645         {
 646             decoder.pf_create_thread = ac3dec_CreateThread;
 647             p_config = (void *)GetAdecConfig( p_input, p_es );
 648
 649             /* Release the lock, not to block the input thread during
 650              * the creation of the thread. */
 651             vlc_mutex_unlock( &p_input->stream.stream_lock );
 652             p_es->thread_id = input_RunDecoder( &decoder, p_config );
 653             vlc_mutex_lock( &p_input->stream.stream_lock );
 654         }
 655         break;
 656
 657     case DVD_SPU_ES:
 658         if( p_main->b_video )
 659         {
 660             decoder.pf_create_thread = spudec_CreateThread;
 661             p_config = (void *)GetVdecConfig( p_input, p_es );
 662
 663             /* Release the lock, not to block the input thread during
 664              * the creation of the thread. */
 665             vlc_mutex_unlock( &p_input->stream.stream_lock );
 666             p_es->thread_id = input_RunDecoder( &decoder, p_config );
 667             vlc_mutex_lock( &p_input->stream.stream_lock );
 668         }
 669         break;
 670
 671     default:
 672         intf_ErrMsg( "Unknown stream type 0x%x", p_es->i_type );
 673         return( -1 );
 674         break;
 675     }
 676
 677     if( p_es->thread_id == 0 )
 678     {
 679         return( -1 );
 680     }
 681
 682     return( 0 );
 683 }
 684
 685 /*****************************************************************************
 686  * input_UnselectES: removes an ES from the list of selected ES
 687  *****************************************************************************/
 688 int input_UnselectES( input_thread_t * p_input, es_descriptor_t * p_es )
 689 {
 690
 691     int     i_index = 0;
 692
 693     if( p_es == NULL )
 694     {
 695         intf_ErrMsg( "Nothing to do in input_UnselectES" );
 696         return -1;
 697     }
 698
 699 #ifdef DEBUG_INPUT
 700     intf_DbgMsg( "Unselecting ES 0x%x", p_es->i_id );
 701 #endif
 702
 703     if( p_es->p_decoder_fifo == NULL )
 704     {
 705         intf_ErrMsg( "ES 0x%x is not selected", p_es->i_id );
 706         return( -1 );
 707     }
 708
 709     input_EndDecoder( p_input, p_es );
 710
 711     if( ( p_es->p_decoder_fifo == NULL ) &&
 712         ( p_input->stream.i_selected_es_number > 0 ) )
 713     {
 714         p_input->stream.i_selected_es_number--;
 715
 716         while( ( i_index < p_input->stream.i_selected_es_number ) &&
 717                ( p_input->stream.pp_selected_es[i_index] != p_es ) )
 718         {
 719             i_index++;
 720         }
 721
 722         p_input->stream.pp_selected_es[i_index] =
 723           p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number];
 724
 725         p_input->stream.pp_selected_es = realloc(
 726                                            p_input->stream.pp_selected_es,
 727                                            p_input->stream.i_selected_es_number
 728                                             * sizeof(es_descriptor_t *) );
 729
 730         if( p_input->stream.pp_selected_es == NULL )
 731         {
 732             intf_ErrMsg( "No more selected ES in input_UnselectES" );
 733             vlc_mutex_unlock( &p_input->stream.stream_lock );
 734             return( 1 );
 735         }
 736     }
 737
 738     return( 0 );
 739 }