git.sesse.net Git - vlc/blob - plugins/dvdread/input_dvdread.c

   1 /*****************************************************************************
   2  * input_dvdread.c: DvdRead plugin.
   3  *****************************************************************************
   4  * This plugins should handle all the known specificities of the DVD format,
   5  * especially the 2048 bytes logical block size.
   6  * It depends on: libdvdread for ifo files and block reading.
   7  *****************************************************************************
   8  * Copyright (C) 2001 VideoLAN
   9  * $Id: input_dvdread.c,v 1.26 2002/03/04 22:18:25 gbazin Exp $
  10  *
  11  * Author: Stéphane Borel <stef@via.ecp.fr>
  12  *
  13  * Some code taken form the play_title.c by Billy Biggs <vektor@dumbterm.net>
  14  * in libdvdread.
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  29  *****************************************************************************/
  30
  31 /*****************************************************************************
  32  * Preamble
  33  *****************************************************************************/
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36
  37 #include <videolan/vlc.h>
  38
  39 #ifdef HAVE_UNISTD_H
  40 #   include <unistd.h>
  41 #endif
  42
  43 #include <fcntl.h>
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #include <string.h>
  47 #include <errno.h>
  48 #include <assert.h>
  49
  50 #ifdef STRNCASECMP_IN_STRINGS_H
  51 #   include <strings.h>
  52 #endif
  53
  54 #if defined( WIN32 )
  55 #   include <io.h>                                                 /* read() */
  56 #else
  57 #   include <sys/uio.h>                                      /* struct iovec */
  58 #endif
  59
  60 #if defined( WIN32 )
  61 #   include "input_iovec.h"
  62 #endif
  63
  64 #include "stream_control.h"
  65 #include "input_ext-intf.h"
  66 #include "input_ext-dec.h"
  67 #include "input_ext-plugins.h"
  68
  69 #include "input_dvdread.h"
  70
  71 #include "iso_lang.h"
  72
  73 #include "debug.h"
  74
  75 /* how many blocks DVDRead will read in each loop */
  76 #define DVD_BLOCK_READ_ONCE 64
  77
  78 /*****************************************************************************
  79  * Local prototypes
  80  *****************************************************************************/
  81 /* called from outside */
  82 static int  DvdReadInit     ( struct input_thread_s * );
  83 static void DvdReadEnd      ( struct input_thread_s * );
  84 static int  DvdReadDemux    ( struct input_thread_s * );
  85 static int  DvdReadRewind   ( struct input_thread_s * );
  86
  87 static int  DvdReadOpen     ( struct input_thread_s * );
  88 static void DvdReadClose    ( struct input_thread_s * );
  89 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
  90 static int  DvdReadSetProgram( struct input_thread_s *, pgrm_descriptor_t * );
  91 static int  DvdReadRead     ( struct input_thread_s *, byte_t *, size_t );
  92 static void DvdReadSeek     ( struct input_thread_s *, off_t );
  93
  94 /* called only from here */
  95 static void DvdReadLauchDecoders( input_thread_t * p_input );
  96 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
  97 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
  98
  99 /*****************************************************************************
 100  * Functions exported as capabilities. They are declared as static so that
 101  * we don't pollute the namespace too much.
 102  *****************************************************************************/
 103 void _M( access_getfunctions )( function_list_t * p_function_list )
 104 {
 105 #define access p_function_list->functions.access
 106     access.pf_open             = DvdReadOpen;
 107     access.pf_close            = DvdReadClose;
 108     access.pf_read             = DvdReadRead;
 109     access.pf_set_area         = DvdReadSetArea;
 110     access.pf_set_program      = DvdReadSetProgram;
 111     access.pf_seek             = DvdReadSeek;
 112 #undef access
 113 }
 114
 115 void _M( demux_getfunctions )( function_list_t * p_function_list )
 116 {
 117 #define demux p_function_list->functions.demux
 118     demux.pf_init             = DvdReadInit;
 119     demux.pf_end              = DvdReadEnd;
 120     demux.pf_demux            = DvdReadDemux;
 121     demux.pf_rewind           = DvdReadRewind;
 122 #undef demux
 123 }
 124
 125 /*
 126  * Data demux functions
 127  */
 128
 129 /*****************************************************************************
 130  * DvdReadInit: initializes DVD structures
 131  *****************************************************************************/
 132 static int DvdReadInit( input_thread_t * p_input )
 133 {
 134     if( strncmp( p_input->p_access_module->psz_name, "dvdread", 7 ) )
 135     {
 136         return -1;
 137     }
 138
 139     vlc_mutex_lock( &p_input->stream.stream_lock );
 140
 141     DvdReadLauchDecoders( p_input );
 142
 143     vlc_mutex_unlock( &p_input->stream.stream_lock );
 144
 145     return 0;
 146 }
 147
 148 /*****************************************************************************
 149  * DvdReadEnd: frees unused data
 150  *****************************************************************************/
 151 static void DvdReadEnd( input_thread_t * p_input )
 152 {
 153 }
 154
 155 /*****************************************************************************
 156  * DvdReadDemux
 157  *****************************************************************************/
 158 #define PEEK( SIZE )                                                        \
 159     i_result = input_Peek( p_input, &p_peek, SIZE );                        \
 160     if( i_result == -1 )                                                    \
 161     {                                                                       \
 162         return( -1 );                                                       \
 163     }                                                                       \
 164     else if( i_result < SIZE )                                              \
 165     {                                                                       \
 166         /* EOF */                                                           \
 167         return( 0 );                                                        \
 168     }
 169
 170 static int DvdReadDemux( input_thread_t * p_input )
 171 {
 172     int                 i;
 173     byte_t *            p_peek;
 174     data_packet_t *     p_data;
 175     ssize_t             i_result;
 176     int                 i_packet_size;
 177
 178
 179     /* Read headers to compute payload length */
 180     for( i = 0 ; i < DVD_BLOCK_READ_ONCE ; i++ )
 181     {
 182
 183         /* Read what we believe to be a packet header. */
 184         PEEK( 4 );
 185
 186         /* Default header */
 187         if( U32_AT( p_peek ) != 0x1BA )
 188         {
 189             /* That's the case for all packets, except pack header. */
 190             i_packet_size = U16_AT( p_peek + 4 );
 191         }
 192         else
 193         {
 194             /* MPEG-2 Pack header. */
 195             i_packet_size = 8;
 196         }
 197
 198         /* Fetch a packet of the appropriate size. */
 199         i_result = input_SplitBuffer( p_input, &p_data, i_packet_size + 6 );
 200         if( i_result <= 0 )
 201         {
 202             return( i_result );
 203         }
 204
 205         /* In MPEG-2 pack headers we still have to read stuffing bytes. */
 206         if( (p_data->p_demux_start[3] == 0xBA) && (i_packet_size == 8) )
 207         {
 208             size_t i_stuffing = (p_data->p_demux_start[13] & 0x7);
 209             /* Force refill of the input buffer - though we don't care
 210              * about p_peek. Please note that this is unoptimized. */
 211             PEEK( i_stuffing );
 212             p_input->p_current_data += i_stuffing;
 213         }
 214
 215         input_DemuxPS( p_input, p_data );
 216
 217     }
 218
 219     return i;
 220 }
 221
 222 /*****************************************************************************
 223  * DVDRewind : reads a stream backward
 224  *****************************************************************************/
 225 static int DvdReadRewind( input_thread_t * p_input )
 226 {
 227     return( -1 );
 228 }
 229
 230 /*
 231  * Data access functions
 232  */
 233
 234 /*****************************************************************************
 235  * DvdReadOpen: open libdvdread
 236  *****************************************************************************/
 237 static int DvdReadOpen( struct input_thread_s *p_input )
 238 {
 239     char *                  psz_orig;
 240     char *                  psz_parser;
 241     char *                  psz_source;
 242     char *                  psz_next;
 243     struct stat             stat_info;
 244     thread_dvd_data_t *     p_dvd;
 245     dvd_reader_t *          p_dvdread;
 246     input_area_t *          p_area;
 247     int                     i_title = 1;
 248     int                     i_chapter = 1;
 249     int                     i_angle = 1;
 250     int                     i;
 251
 252     psz_orig = psz_parser = psz_source = strdup( p_input->psz_name );
 253     if( !psz_orig )
 254     {
 255         return( -1 );
 256     }
 257
 258     while( *psz_parser && *psz_parser != '@' )
 259     {
 260         psz_parser++;
 261     }
 262
 263     if( *psz_parser == '@' )
 264     {
 265         /* Found options */
 266         *psz_parser = '\0';
 267         ++psz_parser;
 268
 269         i_title = (int)strtol( psz_parser, &psz_next, 10 );
 270         if( *psz_next )
 271         {
 272             psz_parser = psz_next + 1;
 273             i_chapter = (int)strtol( psz_parser, &psz_next, 10 );
 274             if( *psz_next )
 275             {
 276                 i_angle = (int)strtol( psz_next + 1, NULL, 10 );
 277             }
 278         }
 279
 280         i_title = i_title ? i_title : 1;
 281         i_chapter = i_chapter ? i_chapter : 1;
 282         i_angle = i_angle ? i_angle : 1;
 283     }
 284
 285     if( !*psz_source )
 286     {
 287         psz_source = config_GetPszVariable( INPUT_DVD_DEVICE_VAR );
 288     }
 289
 290     if( stat( psz_source, &stat_info ) == -1 )
 291     {
 292         intf_ErrMsg( "input error: cannot stat() source `%s' (%s)",
 293                      psz_source, strerror(errno));
 294         return( -1 );
 295     }
 296     if( !S_ISBLK(stat_info.st_mode) &&
 297         !S_ISCHR(stat_info.st_mode) &&
 298         !S_ISDIR(stat_info.st_mode) )
 299     {
 300         intf_WarnMsg( 3, "input : DvdRead plugin discarded"
 301                          " (not a valid source)" );
 302         return -1;
 303     }
 304
 305     intf_WarnMsg( 2, "input: dvdroot=%s title=%d chapter=%d angle=%d",
 306                   psz_source, i_title, i_chapter, i_angle );
 307
 308
 309     p_dvdread = DVDOpen( psz_source );
 310
 311     /* free allocated strings */
 312     if( psz_source != psz_orig )
 313         free( psz_device );
 314     free( psz_orig );
 315
 316     if( ! p_dvdread )
 317     {
 318         intf_ErrMsg( "dvdread error: libdvdcss can't open source" );
 319         return -1;
 320     }
 321
 322     /* set up input  */
 323     p_input->i_mtu = 0;
 324
 325     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 326     if( p_dvd == NULL )
 327     {
 328         intf_ErrMsg( "dvdread error: out of memory" );
 329         return -1;
 330     }
 331
 332     p_dvd->p_dvdread = p_dvdread;
 333     p_dvd->p_title = NULL;
 334     p_dvd->p_vts_file = NULL;
 335
 336     p_dvd->i_title = i_title;
 337     p_dvd->i_chapter = i_chapter;
 338     p_dvd->i_angle = i_angle;
 339
 340     p_input->p_access_data = (void *)p_dvd;
 341
 342     /* Ifo allocation & initialisation */
 343     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 344     {
 345         intf_ErrMsg( "dvdread error: can't open VMG info" );
 346         free( p_dvd );
 347         return -1;
 348     }
 349     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 350
 351     /* Set stream and area data */
 352     vlc_mutex_lock( &p_input->stream.stream_lock );
 353
 354     p_input->stream.i_method = INPUT_METHOD_DVD;
 355
 356     /* If we are here we can control the pace... */
 357     p_input->stream.b_pace_control = 1;
 358     p_input->stream.b_seekable = 1;
 359
 360     p_input->stream.p_selected_area->i_size = 0;
 361     p_input->stream.p_selected_area->i_tell = 0;
 362
 363     /* Initialize ES structures */
 364     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 365
 366     /* disc input method */
 367     p_input->stream.i_method = INPUT_METHOD_DVD;
 368
 369 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 370     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 371
 372 #define area p_input->stream.pp_areas
 373     /* We start from 1 here since the default area 0
 374      * is reserved for video_ts.vob */
 375     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 376     {
 377         input_AddArea( p_input );
 378
 379         /* Titles are Program Chains */
 380         area[i]->i_id = i;
 381
 382         /* Absolute start offset and size
 383          * We can only set that with vts ifo, so we do it during the
 384          * first call to DVDSetArea */
 385         area[i]->i_start = 0;
 386         area[i]->i_size = 0;
 387
 388         /* Number of chapters */
 389         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 390         area[i]->i_part = 1;
 391
 392         /* Number of angles */
 393         area[i]->i_angle_nb = 0;
 394         area[i]->i_angle = 1;
 395
 396         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 397     }
 398 #undef area
 399 #undef tt_srpt
 400
 401     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 402
 403     p_area = p_input->stream.pp_areas[i_title];
 404
 405     /* set title, chapter, audio and subpic */
 406     if( DvdReadSetArea( p_input, p_area ) )
 407     {
 408         vlc_mutex_unlock( &p_input->stream.stream_lock );
 409         return -1;
 410     }
 411
 412     vlc_mutex_unlock( &p_input->stream.stream_lock );
 413
 414     return 0;
 415 }
 416
 417 /*****************************************************************************
 418  * DvdReadClose: close libdvdread
 419  *****************************************************************************/
 420 static void DvdReadClose( struct input_thread_s *p_input )
 421 {
 422     thread_dvd_data_t *     p_dvd;
 423
 424     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 425
 426     /* close libdvdread */
 427     DVDCloseFile( p_dvd->p_title );
 428     ifoClose( p_dvd->p_vts_file );
 429     ifoClose( p_dvd->p_vmg_file );
 430
 431     DVDClose( p_dvd->p_dvdread );
 432     free( p_dvd );
 433     p_input->p_access_data = NULL;
 434
 435 }
 436
 437 /*****************************************************************************
 438  * DvdReadSetProgram: Does nothing, a DVD is mono-program
 439  *****************************************************************************/
 440 static int DvdReadSetProgram( input_thread_t * p_input,
 441                               pgrm_descriptor_t * p_program )
 442 {
 443     return 0;
 444 }
 445
 446 #define p_pgc         p_dvd->p_cur_pgc
 447
 448 /*****************************************************************************
 449  * DvdReadSetArea: initialize input data for title x, chapter y.
 450  * It should be called for each user navigation request.
 451  *****************************************************************************
 452  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 453  * Note that you have to take the lock before entering here.
 454  *****************************************************************************/
 455 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 456 {
 457     thread_dvd_data_t *  p_dvd;
 458     int                  pgc_id = 0;
 459     int                  pgn = 0;
 460
 461     p_dvd = (thread_dvd_data_t*)p_input->p_access_data;
 462
 463     /* we can't use the interface slider until initilization is complete */
 464     p_input->stream.b_seekable = 0;
 465
 466     if( p_area != p_input->stream.p_selected_area )
 467     {
 468         es_descriptor_t *    p_es;
 469         int                  i_cell = 0;
 470         int                  i_audio_nb = 0;
 471         int                  i_spu_nb = 0;
 472         int                  i;
 473
 474 #define p_vmg         p_dvd->p_vmg_file
 475 #define p_vts         p_dvd->p_vts_file
 476         if( p_dvd->p_title != NULL )
 477         {
 478             DVDCloseFile( p_dvd->p_title );
 479         }
 480
 481         if( p_vts != NULL )
 482         {
 483             ifoClose( p_vts );
 484         }
 485
 486         /* Reset the Chapter position of the old title */
 487         p_input->stream.p_selected_area->i_part = 1;
 488
 489         /*
 490          *  We have to load all title information
 491          */
 492         /* Change the default area */
 493         p_input->stream.p_selected_area = p_area;
 494
 495         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 496             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 497             p_area->i_id );
 498
 499         /* ifo vts */
 500         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 501                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 502         {
 503             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 504             ifoClose( p_vmg );
 505             DVDClose( p_dvd->p_dvdread );
 506             return -1;
 507         }
 508
 509         /* title position inside the selected vts */
 510         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 511
 512         /*
 513          * Set selected title start
 514          */
 515         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 516         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 517         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 518         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 519
 520         p_area->i_start =
 521             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 522
 523         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 524                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 525
 526         /*
 527          * Find title end
 528          */
 529         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 530
 531         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 532         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 533
 534         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 535                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 536
 537         /*
 538          * Set properties for current chapter
 539          */
 540         /* Remeber current chapter */
 541         p_dvd->i_chapter = p_area->i_part;
 542         p_dvd->b_eoc = 0;
 543
 544         pgc_id = p_vts->vts_ptt_srpt->title[
 545                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 546         pgn = p_vts->vts_ptt_srpt->title[
 547                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 548
 549         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 550         p_dvd->i_pack_len = 0;
 551         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 552         DvdReadFindCell( p_dvd );
 553
 554         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 555             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 556
 557         /*
 558          * Angle management
 559          */
 560         p_dvd->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 561
 562         if( p_dvd->i_angle > p_area->i_angle_nb )
 563         {
 564             p_dvd->i_angle = 1;
 565         }
 566
 567         p_area->i_angle = p_dvd->i_angle;
 568         p_area->i_angle_nb = p_dvd->i_angle_nb;
 569
 570         /*
 571          * We've got enough info, time to open the title set data.
 572          */
 573         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 574             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 575             DVD_READ_TITLE_VOBS ) ) )
 576         {
 577             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 578                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 579             ifoClose( p_vts );
 580             ifoClose( p_vmg );
 581             DVDClose( p_dvd->p_dvdread );
 582             return -1;
 583         }
 584
 585 //        IfoPrintTitle( p_dvd );
 586
 587         /*
 588          * Destroy obsolete ES by reinitializing program 0
 589          * and find all ES in title with ifo data
 590          */
 591         if( p_input->stream.pp_programs != NULL )
 592         {
 593             /* We don't use input_EndStream here since
 594              * we keep area structures */
 595
 596             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 597             {
 598                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 599             }
 600
 601             free( p_input->stream.pp_selected_es );
 602             input_DelProgram( p_input, p_input->stream.p_selected_program );
 603
 604             p_input->stream.pp_selected_es = NULL;
 605             p_input->stream.i_selected_es_number = 0;
 606         }
 607
 608         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 609         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 610
 611         /* No PSM to read in DVD mode, we already have all information */
 612         p_input->stream.p_selected_program->b_is_ok = 1;
 613
 614         p_es = NULL;
 615
 616         /* ES 0 -> video MPEG2 */
 617 //        IfoPrintVideo( p_dvd );
 618
 619         p_es = input_AddES( p_input, p_input->stream.p_selected_program, 0xe0, 0 );
 620         p_es->i_stream_id = 0xe0;
 621         p_es->i_type = MPEG2_VIDEO_ES;
 622         p_es->i_cat = VIDEO_ES;
 623
 624 #define audio_control \
 625     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 626         /* Audio ES, in the order they appear in .ifo */
 627         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 628         {
 629             int i_position = 0;
 630             u16 i_id;
 631
 632 //            IfoPrintAudio( p_dvd, i );
 633
 634             /* audio channel is active if first byte is 0x80 */
 635             if( audio_control & 0x8000 )
 636             {
 637                 i_audio_nb++;
 638                 i_position = ( audio_control & 0x7F00 ) >> 8;
 639
 640             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 641                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 642                 {
 643                 case 0x00:              /* AC3 */
 644                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 645                     p_es = input_AddES( p_input,
 646                                p_input->stream.p_selected_program, i_id, 0 );
 647                     p_es->i_stream_id = 0xbd;
 648                     p_es->i_type = AC3_AUDIO_ES;
 649                     p_es->b_audio = 1;
 650                     p_es->i_cat = AUDIO_ES;
 651                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 652                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 653                     strcat( p_es->psz_desc, " (ac3)" );
 654
 655                     break;
 656                 case 0x02:
 657                 case 0x03:              /* MPEG audio */
 658                     i_id = 0xc0 + i_position;
 659                     p_es = input_AddES( p_input,
 660                                     p_input->stream.p_selected_program, i_id, 0 );
 661                     p_es->i_stream_id = i_id;
 662                     p_es->i_type = MPEG2_AUDIO_ES;
 663                     p_es->b_audio = 1;
 664                     p_es->i_cat = AUDIO_ES;
 665                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 666                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 667                     strcat( p_es->psz_desc, " (mpeg)" );
 668
 669                     break;
 670                 case 0x04:              /* LPCM */
 671
 672                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 673                     p_es = input_AddES( p_input,
 674                                     p_input->stream.p_selected_program, i_id, 0 );
 675                     p_es->i_stream_id = i_id;
 676                     p_es->i_type = LPCM_AUDIO_ES;
 677                     p_es->b_audio = 1;
 678                     p_es->i_cat = AUDIO_ES;
 679                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 680                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 681                     strcat( p_es->psz_desc, " (lpcm)" );
 682
 683                     break;
 684                 case 0x06:              /* DTS */
 685                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 686                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 687                                  "(0x%x)", i_id );
 688                     break;
 689                 default:
 690                     i_id = 0;
 691                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 692                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 693                 }
 694             }
 695         }
 696 #undef audio_control
 697 #define spu_control \
 698     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 699
 700         /* Sub Picture ES */
 701
 702         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 703         {
 704             int i_position = 0;
 705             u16 i_id;
 706
 707 //            IfoPrintSpu( p_dvd, i );
 708             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 709
 710             if( spu_control & 0x80000000 )
 711             {
 712                 i_spu_nb++;
 713
 714                 /*  there are several streams for one spu */
 715                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 716                 {
 717                     /* 16:9 */
 718                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 719                     {
 720                     case 1:
 721                         i_position = spu_control & 0xff;
 722                         break;
 723                     case 2:
 724                         i_position = ( spu_control >> 8 ) & 0xff;
 725                         break;
 726                     default:
 727                         i_position = ( spu_control >> 16 ) & 0xff;
 728                         break;
 729                     }
 730                 }
 731                 else
 732                 {
 733                     /* 4:3 */
 734                     i_position = ( spu_control >> 24 ) & 0x7F;
 735                 }
 736
 737                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 738                 p_es = input_AddES( p_input,
 739                                     p_input->stream.p_selected_program, i_id, 0 );
 740                 p_es->i_stream_id = 0xbd;
 741                 p_es->i_type = DVD_SPU_ES;
 742                 p_es->i_cat = SPU_ES;
 743                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 744                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 745             }
 746         }
 747 #undef spu_control
 748
 749         /* FIXME: hack to check that the demuxer is ready, and set
 750          * the decoders */
 751         if( p_input->p_demux_module )
 752         {
 753             DvdReadLauchDecoders( p_input );
 754         }
 755
 756     } /* i_title >= 0 */
 757     else
 758     {
 759         p_area = p_input->stream.p_selected_area;
 760     }
 761
 762     /*
 763      * Chapter selection
 764      */
 765
 766     if( p_area->i_part != p_dvd->i_chapter )
 767     {
 768         if( ( p_area->i_part > 0 ) &&
 769             ( p_area->i_part <= p_area->i_part_nb ))
 770         {
 771             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 772             pgc_id = p_vts->vts_ptt_srpt->title[
 773                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 774             pgn = p_vts->vts_ptt_srpt->title[
 775                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 776
 777             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 778
 779             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 780             p_dvd->i_chapter = p_area->i_part;
 781             DvdReadFindCell( p_dvd );
 782
 783             p_dvd->i_pack_len = 0;
 784             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 785                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 786         }
 787         else
 788         {
 789             p_area->i_part = p_dvd->i_chapter;
 790         }
 791     }
 792 #undef p_vts
 793 #undef p_vmg
 794
 795     if( p_area->i_angle != p_dvd->i_angle )
 796     {
 797         p_dvd->i_angle = p_area->i_angle;
 798
 799         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 800     }
 801     /* warn interface that something has changed */
 802     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 803     p_input->stream.b_seekable = 1;
 804     p_input->stream.b_changed = 1;
 805
 806     return 0;
 807 }
 808
 809
 810 /*****************************************************************************
 811  * DvdReadRead: reads data packets into the netlist.
 812  *****************************************************************************
 813  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 814  * EOF.
 815  *****************************************************************************/
 816 static int DvdReadRead( input_thread_t * p_input,
 817                         byte_t * p_buffer, size_t i_count )
 818 {
 819     thread_dvd_data_t *     p_dvd;
 820     byte_t *                p_buf;
 821     int                     i_blocks_once;
 822     int                     i_blocks;
 823     int                     i_read;
 824     int                     i_read_total;
 825     boolean_t               b_eot = 0;
 826
 827     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 828     p_buf = p_buffer;
 829
 830     /*
 831      * Playback by cell in this pgc, starting at the cell for our chapter.
 832      */
 833     i_blocks = OFF2LB( i_count );
 834     i_read_total = 0;
 835     i_read = 0;
 836
 837     while( i_blocks )
 838     {
 839         /*
 840          * End of pack, we select the following one
 841          */
 842         if( ! p_dvd->i_pack_len )
 843         {
 844             /*
 845              * Read NAV packet.
 846              */
 847             if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 848                            1, p_buf ) ) != 1 )
 849             {
 850                 intf_ErrMsg( "dvdread error: read failed for block %d",
 851                              p_dvd->i_next_vobu );
 852                 return -1;
 853             }
 854
 855             /* basic check to be sure we don't have a empty title
 856              * go to next title if so */
 857             //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
 858
 859             /*
 860              * Parse the contained dsi packet.
 861              */
 862
 863             DvdReadHandleDSI( p_dvd, p_buf );
 864
 865             /* End of File */
 866             if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 867             {
 868                 return 1;
 869             }
 870
 871             assert( p_dvd->i_pack_len < 1024 );
 872             /* FIXME: Ugly kludge: we send the pack block to the input for it
 873              * sometimes has a zero scr and restart the sync */
 874             p_dvd->i_cur_block ++;
 875             //p_dvd->i_pack_len++;
 876
 877             i_read_total++;
 878             p_buf += DVD_VIDEO_LB_LEN;
 879             i_blocks--;
 880         }
 881
 882         /*
 883          * Compute the number of blocks to read
 884          */
 885         i_blocks_once = p_dvd->i_pack_len >= i_blocks
 886                  ? i_blocks : p_dvd->i_pack_len;
 887         p_dvd->i_pack_len -= i_blocks_once;
 888
 889         /* Reads from DVD */
 890         i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 891                                 i_blocks_once, p_buf );
 892         if( i_read != i_blocks_once )
 893         {
 894             intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 895                          i_read, i_blocks_once, p_dvd->i_cur_block );
 896             return -1;
 897         }
 898
 899         i_blocks -= i_read;
 900         i_read_total += i_read;
 901         p_dvd->i_cur_block += i_read;
 902         p_buf += LB2OFF( i_read );
 903
 904     }
 905 /*
 906     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 907 */
 908
 909     vlc_mutex_lock( &p_input->stream.stream_lock );
 910
 911     p_input->stream.p_selected_area->i_tell =
 912         LB2OFF( p_dvd->i_cur_block ) -
 913             p_input->stream.p_selected_area->i_start;
 914
 915     if( p_dvd->b_eoc )
 916     {
 917         /* We modify i_part only at end of chapter not to erase
 918          * some modification from the interface */
 919         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 920         p_dvd->b_eoc = 0;
 921     }
 922
 923     if( p_input->stream.p_selected_area->i_tell
 924             >= p_input->stream.p_selected_area->i_size || b_eot )
 925     {
 926         if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
 927                         p_input->stream.i_area_nb )
 928         {
 929             /* EOF */
 930             vlc_mutex_unlock( &p_input->stream.stream_lock );
 931             return 1;
 932         }
 933
 934         /* EOT */
 935         intf_WarnMsg( 4, "dvd info: new title" );
 936         DvdReadSetArea( p_input, p_input->stream.pp_areas[
 937                         p_input->stream.p_selected_area->i_id+1] );
 938         vlc_mutex_unlock( &p_input->stream.stream_lock );
 939         return 0;
 940     }
 941
 942     vlc_mutex_unlock( &p_input->stream.stream_lock );
 943
 944     return LB2OFF( i_read_total );
 945 }
 946 #undef p_pgc
 947
 948 /*****************************************************************************
 949  * DvdReadSeek : Goes to a given position on the stream.
 950  *****************************************************************************
 951  * This one is used by the input and translate chronological position from
 952  * input to logical position on the device.
 953  * The lock should be taken before calling this function.
 954  *****************************************************************************/
 955 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 956 {
 957     thread_dvd_data_t *     p_dvd;
 958     int                     i_lb;
 959     int                     i_tmp;
 960     int                     i_chapter = 0;
 961     int                     i_cell = 0;
 962     int                     i_vobu = 0;
 963     int                     i_sub_cell = 0;
 964
 965     vlc_mutex_lock( &p_input->stream.stream_lock );
 966     i_off += p_input->stream.p_selected_area->i_start;
 967     vlc_mutex_unlock( &p_input->stream.stream_lock );
 968
 969     i_lb = OFF2LB( i_off );
 970     p_dvd = ( thread_dvd_data_t * )p_input->p_access_data;
 971
 972     /* find cell */
 973     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 974     {
 975         i_cell++;
 976     }
 977
 978     /* find chapter */
 979     do
 980     {
 981         pgc_t *     p_pgc;
 982         int         pgc_id, pgn;
 983
 984         i_chapter++;
 985         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
 986                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
 987         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
 988                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
 989
 990         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 991         i_tmp = p_pgc->program_map[pgn-1];
 992
 993     } while( i_tmp <= i_cell );
 994
 995     /* find vobu */
 996     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
 997             <= i_lb )
 998     {
 999         i_vobu++;
1000     }
1001
1002     /* find sub_cell */
1003     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1004             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1005     {
1006         i_sub_cell++;
1007     }
1008
1009 /*
1010     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1011             i_cell, i_sub_cell,i_chapter, i_vobu,
1012             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1013             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1014             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1015 */
1016     p_dvd->i_cur_block = i_lb;
1017     p_dvd->i_next_vobu =
1018         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1019     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1020     p_dvd->i_cur_cell = i_cell;
1021     p_dvd->i_chapter = i_chapter;
1022     DvdReadFindCell( p_dvd );
1023
1024     vlc_mutex_lock( &p_input->stream.stream_lock );
1025     p_input->stream.p_selected_area->i_tell =
1026         LB2OFF ( p_dvd->i_cur_block )
1027          - p_input->stream.p_selected_area->i_start;
1028     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1029     vlc_mutex_unlock( &p_input->stream.stream_lock );
1030
1031     return;
1032 }
1033
1034 /*****************************************************************************
1035  * DvdReadHandleDSI
1036  *****************************************************************************/
1037 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1038 {
1039     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1040
1041     /*
1042      * Determine where we go next.  These values are the ones we mostly
1043      * care about.
1044      */
1045     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1046
1047     /*
1048      * If we're not at the end of this cell, we can determine the next
1049      * VOBU to display using the VOBU_SRI information section of the
1050      * DSI.  Using this value correctly follows the current angle,
1051      * avoiding the doubled scenes in The Matrix, and makes our life
1052      * really happy.
1053      */
1054     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1055     {
1056 #if 1
1057         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1058         {
1059             case 0x4:
1060                 /* interleaved unit with no angle */
1061                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1062                 {
1063                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1064                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1065                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1066                 }
1067                 else
1068                 {
1069                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1070                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1071                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1072                 }
1073                 break;
1074             case 0x5:
1075                 /* vobu is end of ilvu */
1076                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1077                 {
1078                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1079                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1080                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1081
1082                     break;
1083                 }
1084             case 0x6:
1085                 /* vobu is beginning of ilvu */
1086             case 0x9:
1087                 /* next scr is 0 */
1088             case 0xa:
1089                 /* entering interleaved section */
1090             case 0x8:
1091                 /* non interleaved cells in interleaved section */
1092             default:
1093                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1094                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1095                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1096                 break;
1097         }
1098 #else
1099         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1100             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1101         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1102 #endif
1103     }
1104     else
1105     {
1106         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1107         DvdReadFindCell( p_dvd );
1108
1109         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1110         p_dvd->i_next_vobu =
1111             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1112     }
1113
1114 #if 0
1115     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1116             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1117             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1118             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1119             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1120             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1121
1122     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1123             p_dvd->dsi_pack.sml_pbi.category,
1124             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1125             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1126             p_dvd->dsi_pack.sml_pbi.size );
1127
1128     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1129             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1130             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1131             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1132 #endif
1133 }
1134
1135 /*****************************************************************************
1136  * DvdReadFindCell
1137  *****************************************************************************/
1138 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1139 {
1140     int         pgc_id, pgn;
1141     int         i = 0;
1142     pgc_t *     p_pgc;
1143 #define cell p_dvd->p_cur_pgc->cell_playback
1144     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1145     {
1146 #if 0
1147         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1148         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1149 #else
1150         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1151
1152         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1153         {
1154             i++;
1155         }
1156         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1157 #endif
1158     }
1159     else
1160     {
1161         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1162     }
1163 #undef cell
1164     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1165                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1166     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1167                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1168     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1169
1170     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1171     {
1172         p_dvd->i_chapter++;
1173         p_dvd->b_eoc = 1;
1174     }
1175 }
1176
1177 /*****************************************************************************
1178  * DvdReadLaunchDecoders
1179  *****************************************************************************/
1180 static void DvdReadLauchDecoders( input_thread_t * p_input )
1181 {
1182     thread_dvd_data_t *  p_dvd;
1183
1184     p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
1185
1186     if( p_main->b_video )
1187     {
1188         input_SelectES( p_input, p_input->stream.pp_es[0] );
1189     }
1190
1191     if( p_main->b_audio )
1192     {
1193         /* For audio: first one if none or a not existing one specified */
1194         int i_audio = config_GetIntVariable( INPUT_CHANNEL_VAR );
1195         if( i_audio < 0 /*|| i_audio > i_audio_nb*/ )
1196         {
1197             config_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
1198             i_audio = 1;
1199         }
1200         if( i_audio > 0/* && i_audio_nb > 0*/ )
1201         {
1202             if( config_GetIntVariable( AOUT_SPDIF_VAR ) ||
1203                 ( config_GetIntVariable( INPUT_AUDIO_VAR ) ==
1204                   REQUESTED_AC3 ) )
1205             {
1206                 int     i_ac3 = i_audio;
1207                 while( ( p_input->stream.pp_es[i_ac3]->i_type !=
1208                        AC3_AUDIO_ES ) && ( i_ac3 <=
1209                        p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams ) )
1210                 {
1211                     i_ac3++;
1212                 }
1213                 if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
1214                 {
1215                     input_SelectES( p_input,
1216                                     p_input->stream.pp_es[i_ac3] );
1217                 }
1218             }
1219             else
1220             {
1221                 input_SelectES( p_input,
1222                                 p_input->stream.pp_es[i_audio] );
1223             }
1224         }
1225     }
1226
1227     if( p_main->b_video )
1228     {
1229         /* for spu, default is none */
1230         int i_spu = config_GetIntVariable( INPUT_SUBTITLE_VAR );
1231         if( i_spu < 0 /*|| i_spu > i_spu_nb*/ )
1232         {
1233             config_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
1234             i_spu = 0;
1235         }
1236         if( i_spu > 0 /*&& i_spu_nb > 0*/ )
1237         {
1238             i_spu += p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams;
1239             input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
1240         }
1241     }
1242 }