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 1.39 2001/03/02 15:51:22 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     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 = 0;
 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->p_pes = NULL;
 372     p_es->p_decoder_fifo = NULL;
 373     p_es->b_audio = 0;
 374
 375     if( i_data_len )
 376     {
 377         p_es->p_demux_data = malloc( i_data_len );
 378         if( p_es->p_demux_data == NULL )
 379         {
 380             intf_ErrMsg( "Unable to allocate memory in input_AddES" );
 381             return( NULL );
 382         }
 383         memset( p_es->p_demux_data, 0, i_data_len );
 384     }
 385     else
 386     {
 387         p_es->p_demux_data = NULL;
 388     }
 389
 390     /* Add this ES to the program definition if one is given */
 391     if( p_pgrm )
 392     {
 393         p_pgrm->i_es_number++;
 394         p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 395                                  p_pgrm->i_es_number
 396                                   * sizeof(es_descriptor_t *) );
 397         if( p_pgrm->pp_es == NULL )
 398         {
 399             intf_ErrMsg( "Unable to realloc memory in input_AddES" );
 400             return( NULL );
 401         }
 402         p_pgrm->pp_es[p_pgrm->i_es_number - 1] = p_es;
 403         p_es->p_pgrm = p_pgrm;
 404     }
 405     else
 406     {
 407         p_es->p_pgrm = NULL;
 408     }
 409
 410     return p_es;
 411 }
 412
 413 /*****************************************************************************
 414  * input_DelES:
 415  *****************************************************************************/
 416 void input_DelES( input_thread_t * p_input, es_descriptor_t * p_es )
 417 {
 418     int                     i_index, i_es_index;
 419     pgrm_descriptor_t *     p_pgrm;
 420
 421     ASSERT( p_es );
 422     p_pgrm = p_es->p_pgrm;
 423
 424     /* Kill associated decoder, if any. */
 425     if( p_es->p_decoder_fifo != NULL )
 426     {
 427         input_EndDecoder( p_input, p_es );
 428     }
 429
 430     /* Remove this ES from the description of the program if it is associated to
 431      * one */
 432     if( p_pgrm )
 433     {
 434         for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
 435         {
 436             if( p_pgrm->pp_es[i_index] == p_es )
 437             {
 438                 p_pgrm->i_es_number--;
 439                 p_pgrm->pp_es[i_index] = p_pgrm->pp_es[p_pgrm->i_es_number];
 440                 p_pgrm->pp_es = realloc( p_pgrm->pp_es,
 441                                          p_pgrm->i_es_number
 442                                           * sizeof(es_descriptor_t *));
 443                 if( p_pgrm->i_es_number && p_pgrm->pp_es == NULL )
 444                 {
 445                     intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 446                 }
 447                 break;
 448             }
 449         }
 450     }
 451
 452     /* Free the demux data */
 453     if( p_es->p_demux_data != NULL )
 454     {
 455         free( p_es->p_demux_data );
 456     }
 457
 458     /* Find the ES in the ES table */
 459     for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
 460          i_es_index++ )
 461     {
 462         if( p_input->stream.pp_es[i_es_index] == p_es )
 463             break;
 464     }
 465
 466     /* Free the ES */
 467     free( p_es );
 468     p_input->stream.i_es_number--;
 469     p_input->stream.pp_es[i_es_index] =
 470                     p_input->stream.pp_es[p_input->stream.i_es_number];
 471     p_input->stream.pp_es = realloc( p_input->stream.pp_es,
 472                                      p_input->stream.i_es_number
 473                                       * sizeof(es_descriptor_t *));
 474     if( p_input->stream.i_es_number && p_input->stream.pp_es == NULL )
 475     {
 476         intf_ErrMsg( "Unable to realloc memory in input_DelES" );
 477     }
 478
 479 }
 480
 481 /*****************************************************************************
 482  * InitDecConfig: initializes a decoder_config_t
 483  *****************************************************************************/
 484 static int InitDecConfig( input_thread_t * p_input, es_descriptor_t * p_es,
 485                           decoder_config_t * p_config )
 486 {
 487     p_config->i_id = p_es->i_id;
 488     p_config->i_type = p_es->i_type;
 489     p_config->p_stream_ctrl =
 490         &p_input->stream.control;
 491
 492     /* Decoder FIFO */
 493     if( (p_config->p_decoder_fifo =
 494             (decoder_fifo_t *)malloc( sizeof(decoder_fifo_t) )) == NULL )
 495     {
 496         intf_ErrMsg( "Out of memory" );
 497         return( -1 );
 498     }
 499
 500     vlc_mutex_init(&p_config->p_decoder_fifo->data_lock);
 501     vlc_cond_init(&p_config->p_decoder_fifo->data_wait);
 502     p_config->p_decoder_fifo->i_start = p_config->p_decoder_fifo->i_end = 0;
 503     p_config->p_decoder_fifo->b_die = p_config->p_decoder_fifo->b_error = 0;
 504     p_config->p_decoder_fifo->p_packets_mgt = p_input->p_method_data;
 505     p_config->p_decoder_fifo->pf_delete_pes = p_input->pf_delete_pes;
 506     p_es->p_decoder_fifo = p_config->p_decoder_fifo;
 507
 508     p_config->pf_init_bit_stream = InitBitstream;
 509
 510     p_input->stream.i_selected_es_number++;
 511     p_input->stream.pp_selected_es = realloc(
 512                                        p_input->stream.pp_selected_es,
 513                                        p_input->stream.i_selected_es_number
 514                                         * sizeof(es_descriptor_t *) );
 515     if( p_input->stream.pp_selected_es == NULL )
 516     {
 517         intf_ErrMsg( "Unable to realloc memory in input_SelectES" );
 518         return(-1);
 519     }
 520     p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number - 1]
 521             = p_es;
 522
 523     return( 0 );
 524 }
 525
 526 /*****************************************************************************
 527  * GetVdecConfig: returns a valid vdec_config_t
 528  *****************************************************************************/
 529 static vdec_config_t * GetVdecConfig( input_thread_t * p_input,
 530                                       es_descriptor_t * p_es )
 531 {
 532     vdec_config_t *     p_config;
 533
 534     p_config = (vdec_config_t *)malloc( sizeof(vdec_config_t) );
 535     if( p_config == NULL )
 536     {
 537         intf_ErrMsg( "Unable to allocate memory in GetVdecConfig" );
 538         return( NULL );
 539     }
 540     p_config->p_vout = p_input->p_default_vout;
 541     if( InitDecConfig( p_input, p_es, &p_config->decoder_config ) == -1 )
 542     {
 543         free( p_config );
 544         return( NULL );
 545     }
 546
 547     return( p_config );
 548 }
 549
 550 /*****************************************************************************
 551  * GetAdecConfig: returns a valid adec_config_t
 552  *****************************************************************************/
 553 static adec_config_t * GetAdecConfig( input_thread_t * p_input,
 554                                       es_descriptor_t * p_es )
 555 {
 556     adec_config_t *     p_config;
 557
 558     p_config = (adec_config_t *)malloc( sizeof(adec_config_t));
 559     if( p_config == NULL )
 560     {
 561         intf_ErrMsg( "Unable to allocate memory in GetAdecConfig" );
 562         return( NULL );
 563     }
 564     p_config->p_aout = p_input->p_default_aout;
 565     if( InitDecConfig( p_input, p_es, &p_config->decoder_config ) == -1 )
 566     {
 567         free( p_config );
 568         return( NULL );
 569     }
 570
 571     return( p_config );
 572 }
 573
 574 /*****************************************************************************
 575  * input_SelectES: selects an ES and spawns the associated decoder
 576  *****************************************************************************
 577  * Remember we are still supposed to have stream_lock when entering this
 578  * function ?
 579  *****************************************************************************/
 580 /* FIXME */
 581 vlc_thread_t adec_CreateThread( void * );
 582 vlc_thread_t ac3dec_CreateThread( void * );
 583 vlc_thread_t vpar_CreateThread( void * );
 584 vlc_thread_t spudec_CreateThread( void * );
 585
 586 int input_SelectES( input_thread_t * p_input, es_descriptor_t * p_es )
 587 {
 588     /* FIXME ! */
 589     decoder_capabilities_t  decoder;
 590     void *                  p_config;
 591
 592 #ifdef DEBUG_INPUT
 593     intf_DbgMsg( "Selecting ES 0x%x", p_es->i_id );
 594 #endif
 595
 596     if( p_es->p_decoder_fifo != NULL )
 597     {
 598         intf_ErrMsg( "ES %d is already selected", p_es->i_id );
 599         return( -1 );
 600     }
 601
 602     switch( p_es->i_type )
 603     {
 604     case MPEG1_AUDIO_ES:
 605     case MPEG2_AUDIO_ES:
 606         if( p_main->b_audio )
 607         {
 608             decoder.pf_create_thread = adec_CreateThread;
 609             p_config = (void *)GetAdecConfig( p_input, p_es );
 610
 611             /* Release the lock, not to block the input thread during
 612              * the creation of the thread. */
 613             vlc_mutex_unlock( &p_input->stream.stream_lock );
 614             p_es->thread_id = input_RunDecoder( &decoder, p_config );
 615             vlc_mutex_lock( &p_input->stream.stream_lock );
 616         }
 617         break;
 618
 619     case MPEG1_VIDEO_ES:
 620     case MPEG2_VIDEO_ES:
 621         if( p_main->b_video )
 622         {
 623             decoder.pf_create_thread = vpar_CreateThread;
 624             p_config = (void *)GetVdecConfig( p_input, p_es );
 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( &decoder, p_config );
 630             vlc_mutex_lock( &p_input->stream.stream_lock );
 631         }
 632         break;
 633
 634     case AC3_AUDIO_ES:
 635         if( p_main->b_audio )
 636         {
 637             decoder.pf_create_thread = ac3dec_CreateThread;
 638             p_config = (void *)GetAdecConfig( p_input, p_es );
 639
 640             /* Release the lock, not to block the input thread during
 641              * the creation of the thread. */
 642             vlc_mutex_unlock( &p_input->stream.stream_lock );
 643             p_es->thread_id = input_RunDecoder( &decoder, p_config );
 644             vlc_mutex_lock( &p_input->stream.stream_lock );
 645         }
 646         break;
 647
 648     case DVD_SPU_ES:
 649         if( p_main->b_video )
 650         {
 651             decoder.pf_create_thread = spudec_CreateThread;
 652             p_config = (void *)GetVdecConfig( p_input, p_es );
 653
 654             /* Release the lock, not to block the input thread during
 655              * the creation of the thread. */
 656             vlc_mutex_unlock( &p_input->stream.stream_lock );
 657             p_es->thread_id = input_RunDecoder( &decoder, p_config );
 658             vlc_mutex_lock( &p_input->stream.stream_lock );
 659         }
 660         break;
 661
 662     default:
 663         intf_ErrMsg( "Unknown stream type %d", p_es->i_type );
 664         return( -1 );
 665         break;
 666     }
 667
 668     if( p_es->thread_id == 0 )
 669     {
 670         return( -1 );
 671     }
 672
 673     return( 0 );
 674 }
 675
 676 /*****************************************************************************
 677  * input_UnselectES: removes an ES from the list of selected ES
 678  *****************************************************************************/
 679 int input_UnselectES( input_thread_t * p_input, es_descriptor_t * p_es )
 680 {
 681
 682     int     i_index = 0;
 683
 684 #ifdef DEBUG_INPUT
 685     intf_DbgMsg( "Unselecting ES 0x%x", p_es->i_id );
 686 #endif
 687
 688     if( p_es->p_decoder_fifo == NULL )
 689     {
 690         intf_ErrMsg( "ES %d is not selected", p_es->i_id );
 691         return( -1 );
 692     }
 693
 694     /* Release lock, not to block the input thread. */
 695     vlc_mutex_unlock( &p_input->stream.stream_lock );
 696     input_EndDecoder( p_input, p_es );
 697     vlc_mutex_lock( &p_input->stream.stream_lock );
 698
 699     if( p_es->p_decoder_fifo == NULL )
 700     {
 701         p_input->stream.i_selected_es_number--;
 702
 703         while( ( i_index < p_input->stream.i_selected_es_number ) &&
 704                ( p_input->stream.pp_selected_es[i_index] != p_es ) )
 705         {
 706             i_index++;
 707         }
 708
 709         p_input->stream.pp_selected_es[i_index] =
 710           p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number];
 711
 712         p_input->stream.pp_selected_es = realloc(
 713                                            p_input->stream.pp_selected_es,
 714                                            p_input->stream.i_selected_es_number
 715                                             * sizeof(es_descriptor_t *) );
 716         if( p_input->stream.pp_selected_es == NULL )
 717         {
 718             intf_ErrMsg( "Unable to realloc memory in input_UnSelectES" );
 719             return(-1);
 720         }
 721     }
 722     return( 0 );
 723 }