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 1.33 2002/03/12 18:37:46 stef 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     vlc_mutex_lock( &p_input->stream.stream_lock );
 135
 136     DvdReadLauchDecoders( p_input );
 137
 138     vlc_mutex_unlock( &p_input->stream.stream_lock );
 139
 140     return 0;
 141 }
 142
 143 /*****************************************************************************
 144  * DvdReadEnd: frees unused data
 145  *****************************************************************************/
 146 static void DvdReadEnd( input_thread_t * p_input )
 147 {
 148 }
 149
 150 /*****************************************************************************
 151  * DvdReadDemux
 152  *****************************************************************************/
 153 #define PEEK( SIZE )                                                        \
 154     i_result = input_Peek( p_input, &p_peek, SIZE );                        \
 155     if( i_result == -1 )                                                    \
 156     {                                                                       \
 157         return( -1 );                                                       \
 158     }                                                                       \
 159     else if( i_result < SIZE )                                              \
 160     {                                                                       \
 161         /* EOF */                                                           \
 162         return( 0 );                                                        \
 163     }
 164
 165 static int DvdReadDemux( input_thread_t * p_input )
 166 {
 167     int                 i;
 168     byte_t *            p_peek;
 169     data_packet_t *     p_data;
 170     ssize_t             i_result;
 171     int                 i_packet_size;
 172
 173
 174     /* Read headers to compute payload length */
 175     for( i = 0 ; i < DVD_BLOCK_READ_ONCE ; i++ )
 176     {
 177
 178         /* Read what we believe to be a packet header. */
 179         PEEK( 4 );
 180
 181         /* Default header */
 182         if( U32_AT( p_peek ) != 0x1BA )
 183         {
 184             /* That's the case for all packets, except pack header. */
 185             i_packet_size = U16_AT( p_peek + 4 );
 186         }
 187         else
 188         {
 189             /* MPEG-2 Pack header. */
 190             i_packet_size = 8;
 191         }
 192
 193         /* Fetch a packet of the appropriate size. */
 194         i_result = input_SplitBuffer( p_input, &p_data, i_packet_size + 6 );
 195         if( i_result <= 0 )
 196         {
 197             return( i_result );
 198         }
 199
 200         /* In MPEG-2 pack headers we still have to read stuffing bytes. */
 201         if( (p_data->p_demux_start[3] == 0xBA) && (i_packet_size == 8) )
 202         {
 203             size_t i_stuffing = (p_data->p_demux_start[13] & 0x7);
 204             /* Force refill of the input buffer - though we don't care
 205              * about p_peek. Please note that this is unoptimized. */
 206             PEEK( i_stuffing );
 207             p_input->p_current_data += i_stuffing;
 208         }
 209
 210         input_DemuxPS( p_input, p_data );
 211
 212     }
 213
 214     return i;
 215 }
 216
 217 /*****************************************************************************
 218  * DVDRewind : reads a stream backward
 219  *****************************************************************************/
 220 static int DvdReadRewind( input_thread_t * p_input )
 221 {
 222     return( -1 );
 223 }
 224
 225 /*
 226  * Data access functions
 227  */
 228
 229 /*****************************************************************************
 230  * DvdReadOpen: open libdvdread
 231  *****************************************************************************/
 232 static int DvdReadOpen( struct input_thread_s *p_input )
 233 {
 234     char *                  psz_orig;
 235     char *                  psz_parser;
 236     char *                  psz_source;
 237     char *                  psz_next;
 238     struct stat             stat_info;
 239     thread_dvd_data_t *     p_dvd;
 240     dvd_reader_t *          p_dvdread;
 241     input_area_t *          p_area;
 242     int                     i_title = 1;
 243     int                     i_chapter = 1;
 244     int                     i_angle = 1;
 245     int                     i;
 246
 247     psz_orig = psz_parser = psz_source = strdup( p_input->psz_name );
 248     if( !psz_orig )
 249     {
 250         return( -1 );
 251     }
 252
 253     while( *psz_parser && *psz_parser != '@' )
 254     {
 255         psz_parser++;
 256     }
 257
 258     if( *psz_parser == '@' )
 259     {
 260         /* Found options */
 261         *psz_parser = '\0';
 262         ++psz_parser;
 263
 264         i_title = (int)strtol( psz_parser, &psz_next, 10 );
 265         if( *psz_next )
 266         {
 267             psz_parser = psz_next + 1;
 268             i_chapter = (int)strtol( psz_parser, &psz_next, 10 );
 269             if( *psz_next )
 270             {
 271                 i_angle = (int)strtol( psz_next + 1, NULL, 10 );
 272             }
 273         }
 274
 275         i_title = i_title ? i_title : 1;
 276         i_chapter = i_chapter ? i_chapter : 1;
 277         i_angle = i_angle ? i_angle : 1;
 278     }
 279
 280     if( !*psz_source )
 281     {
 282         if( !p_input->psz_access )
 283         {
 284             free( psz_orig );
 285             return -1;
 286         }
 287         psz_source = config_GetPszVariable( "dvd_device" );
 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_source );
 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
 337     p_input->p_access_data = (void *)p_dvd;
 338
 339     /* Ifo allocation & initialisation */
 340     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 341     {
 342         intf_ErrMsg( "dvdread error: can't open VMG info" );
 343         free( p_dvd );
 344         return -1;
 345     }
 346     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 347
 348     /* Set stream and area data */
 349     vlc_mutex_lock( &p_input->stream.stream_lock );
 350
 351     p_input->stream.i_method = INPUT_METHOD_DVD;
 352
 353     /* If we are here we can control the pace... */
 354     p_input->stream.b_pace_control = 1;
 355     p_input->stream.b_seekable = 1;
 356
 357     p_input->stream.p_selected_area->i_size = 0;
 358     p_input->stream.p_selected_area->i_tell = 0;
 359
 360     /* Initialize ES structures */
 361     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 362
 363     /* disc input method */
 364     p_input->stream.i_method = INPUT_METHOD_DVD;
 365
 366 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 367     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 368
 369 #define area p_input->stream.pp_areas
 370     /* We start from 1 here since the default area 0
 371      * is reserved for video_ts.vob */
 372     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 373     {
 374         input_AddArea( p_input );
 375
 376         /* Titles are Program Chains */
 377         area[i]->i_id = i;
 378
 379         /* Absolute start offset and size
 380          * We can only set that with vts ifo, so we do it during the
 381          * first call to DVDSetArea */
 382         area[i]->i_start = 0;
 383         area[i]->i_size = 0;
 384
 385         /* Number of chapters */
 386         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 387         area[i]->i_part = 1;
 388
 389         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 390     }
 391 #undef area
 392
 393     p_dvd->i_title = i_title <= tt_srpt->nr_of_srpts ? i_title : 1;
 394 #undef tt_srpt
 395
 396     p_area = p_input->stream.pp_areas[p_dvd->i_title];
 397     p_dvd->i_chapter = i_chapter;
 398
 399     p_dvd->i_chapter = i_chapter < p_area->i_part_nb ? i_chapter : 1;
 400     p_area->i_part = p_dvd->i_chapter;
 401
 402     p_dvd->i_angle = i_angle;
 403
 404     /* set title, chapter, audio and subpic */
 405     if( DvdReadSetArea( p_input, p_area ) )
 406     {
 407         vlc_mutex_unlock( &p_input->stream.stream_lock );
 408         return -1;
 409     }
 410
 411     vlc_mutex_unlock( &p_input->stream.stream_lock );
 412
 413     p_input->psz_demux = "dvdread";
 414
 415     return 0;
 416 }
 417
 418 /*****************************************************************************
 419  * DvdReadClose: close libdvdread
 420  *****************************************************************************/
 421 static void DvdReadClose( struct input_thread_s *p_input )
 422 {
 423     thread_dvd_data_t *     p_dvd;
 424
 425     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 426
 427     /* close libdvdread */
 428     DVDCloseFile( p_dvd->p_title );
 429     ifoClose( p_dvd->p_vts_file );
 430     ifoClose( p_dvd->p_vmg_file );
 431
 432     DVDClose( p_dvd->p_dvdread );
 433     free( p_dvd );
 434     p_input->p_access_data = NULL;
 435
 436 }
 437
 438 /*****************************************************************************
 439  * DvdReadSetProgram: Does nothing, a DVD is mono-program
 440  *****************************************************************************/
 441 static int DvdReadSetProgram( input_thread_t * p_input,
 442                               pgrm_descriptor_t * p_program )
 443 {
 444     if( p_input->stream.p_selected_program != p_program )
 445     {
 446         thread_dvd_data_t *  p_dvd;
 447
 448         p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
 449         p_dvd->i_angle = p_program->i_number;
 450
 451         memcpy( p_program, p_input->stream.p_selected_program,
 452                 sizeof(pgrm_descriptor_t) );
 453         p_program->i_number = p_dvd->i_angle;
 454         p_input->stream.p_selected_program = p_program;
 455
 456         intf_WarnMsg( 3, "dvd info: angle %d selected", p_dvd->i_angle );
 457     }
 458
 459     return 0;
 460 }
 461
 462 #define p_pgc         p_dvd->p_cur_pgc
 463
 464 /*****************************************************************************
 465  * DvdReadSetArea: initialize input data for title x, chapter y.
 466  * It should be called for each user navigation request.
 467  *****************************************************************************
 468  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 469  * Note that you have to take the lock before entering here.
 470  *****************************************************************************/
 471 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 472 {
 473     thread_dvd_data_t *  p_dvd;
 474     int                  pgc_id = 0;
 475     int                  pgn = 0;
 476
 477     p_dvd = (thread_dvd_data_t*)p_input->p_access_data;
 478
 479     /* we can't use the interface slider until initilization is complete */
 480     p_input->stream.b_seekable = 0;
 481
 482     if( p_area != p_input->stream.p_selected_area )
 483     {
 484         es_descriptor_t *    p_es;
 485         int                  i_cell = 0;
 486         int                  i_audio_nb = 0;
 487         int                  i_spu_nb = 0;
 488         int                  i;
 489
 490 #define p_vmg         p_dvd->p_vmg_file
 491 #define p_vts         p_dvd->p_vts_file
 492         if( p_dvd->p_title != NULL )
 493         {
 494             DVDCloseFile( p_dvd->p_title );
 495         }
 496
 497         if( p_vts != NULL )
 498         {
 499             ifoClose( p_vts );
 500         }
 501
 502         /* Reset the Chapter position of the old title */
 503         p_input->stream.p_selected_area->i_part = 1;
 504
 505         /*
 506          *  We have to load all title information
 507          */
 508         /* Change the default area */
 509         p_input->stream.p_selected_area = p_area;
 510
 511         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 512             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 513             p_area->i_id );
 514
 515         /* ifo vts */
 516         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 517                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 518         {
 519             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 520             ifoClose( p_vmg );
 521             DVDClose( p_dvd->p_dvdread );
 522             return -1;
 523         }
 524
 525         /* title position inside the selected vts */
 526         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 527
 528         /*
 529          * Set selected title start
 530          */
 531         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 532         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 533         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 534         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 535
 536         p_area->i_start =
 537             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 538
 539         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 540                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 541
 542         /*
 543          * Find title end
 544          */
 545         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 546
 547         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 548         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 549
 550         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 551                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 552
 553         /*
 554          * Set properties for current chapter
 555          */
 556         /* Remeber current chapter */
 557         p_dvd->i_chapter = p_area->i_part;
 558         p_dvd->b_eoc = 0;
 559
 560         pgc_id = p_vts->vts_ptt_srpt->title[
 561                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 562         pgn = p_vts->vts_ptt_srpt->title[
 563                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 564
 565         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 566         p_dvd->i_pack_len = 0;
 567         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 568         DvdReadFindCell( p_dvd );
 569
 570         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 571             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 572
 573         /*
 574          * Angle management
 575          */
 576         p_dvd->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 577
 578         if( p_dvd->i_angle > p_dvd->i_angle_nb )
 579         {
 580             p_dvd->i_angle = 1;
 581         }
 582
 583         /*
 584          * We've got enough info, time to open the title set data.
 585          */
 586         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 587             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 588             DVD_READ_TITLE_VOBS ) ) )
 589         {
 590             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 591                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 592             ifoClose( p_vts );
 593             ifoClose( p_vmg );
 594             DVDClose( p_dvd->p_dvdread );
 595             return -1;
 596         }
 597
 598 //        IfoPrintTitle( p_dvd );
 599
 600         /*
 601          * Destroy obsolete ES by reinitializing program 0
 602          * and find all ES in title with ifo data
 603          */
 604         if( p_input->stream.pp_programs != NULL )
 605         {
 606             /* We don't use input_EndStream here since
 607              * we keep area structures */
 608
 609             while( p_input->stream.i_es_number )
 610             {
 611                 input_DelES( p_input, p_input->stream.pp_es[0] );
 612             }
 613
 614             while( p_input->stream.i_pgrm_number )
 615             {
 616                 input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 617             }
 618
 619             if( p_input->stream.pp_selected_es )
 620             {
 621                 free( p_input->stream.pp_selected_es );
 622                 p_input->stream.pp_selected_es = NULL;
 623             }
 624             p_input->stream.i_selected_es_number = 0;
 625         }
 626
 627         input_AddProgram( p_input, 1, sizeof( stream_ps_data_t ) );
 628         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 629
 630         for( i = 1 ; i < p_dvd->i_angle_nb ; i++ )
 631         {
 632             input_AddProgram( p_input, i+1, 0 );
 633         }
 634
 635         DvdReadSetProgram( p_input,
 636                            p_input->stream.pp_programs[p_dvd->i_angle-1] );
 637
 638         /* No PSM to read in DVD mode, we already have all information */
 639         p_input->stream.p_selected_program->b_is_ok = 1;
 640
 641         p_es = NULL;
 642
 643         /* ES 0 -> video MPEG2 */
 644 //        IfoPrintVideo( p_dvd );
 645
 646         p_es = input_AddES( p_input, NULL, 0xe0, 0 );
 647         p_es->i_stream_id = 0xe0;
 648         p_es->i_type = MPEG2_VIDEO_ES;
 649         p_es->i_cat = VIDEO_ES;
 650
 651 #define audio_control \
 652     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 653         /* Audio ES, in the order they appear in .ifo */
 654         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 655         {
 656             int i_position = 0;
 657             u16 i_id;
 658
 659 //            IfoPrintAudio( p_dvd, i );
 660
 661             /* audio channel is active if first byte is 0x80 */
 662             if( audio_control & 0x8000 )
 663             {
 664                 i_audio_nb++;
 665                 i_position = ( audio_control & 0x7F00 ) >> 8;
 666
 667             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 668                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 669                 {
 670                 case 0x00:              /* AC3 */
 671                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 672                     p_es = input_AddES( p_input, NULL, i_id, 0 );
 673                     p_es->i_stream_id = 0xbd;
 674                     p_es->i_type = AC3_AUDIO_ES;
 675                     p_es->b_audio = 1;
 676                     p_es->i_cat = AUDIO_ES;
 677                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 678                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 679                     strcat( p_es->psz_desc, " (ac3)" );
 680
 681                     break;
 682                 case 0x02:
 683                 case 0x03:              /* MPEG audio */
 684                     i_id = 0xc0 + i_position;
 685                     p_es = input_AddES( p_input, NULL, i_id, 0 );
 686                     p_es->i_stream_id = i_id;
 687                     p_es->i_type = MPEG2_AUDIO_ES;
 688                     p_es->b_audio = 1;
 689                     p_es->i_cat = AUDIO_ES;
 690                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 691                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 692                     strcat( p_es->psz_desc, " (mpeg)" );
 693
 694                     break;
 695                 case 0x04:              /* LPCM */
 696
 697                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 698                     p_es = input_AddES( p_input, NULL, i_id, 0 );
 699                     p_es->i_stream_id = i_id;
 700                     p_es->i_type = LPCM_AUDIO_ES;
 701                     p_es->b_audio = 1;
 702                     p_es->i_cat = AUDIO_ES;
 703                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 704                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 705                     strcat( p_es->psz_desc, " (lpcm)" );
 706
 707                     break;
 708                 case 0x06:              /* DTS */
 709                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 710                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 711                                  "(0x%x)", i_id );
 712                     break;
 713                 default:
 714                     i_id = 0;
 715                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 716                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 717                 }
 718             }
 719         }
 720 #undef audio_control
 721 #define spu_control \
 722     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 723
 724         /* Sub Picture ES */
 725
 726         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 727         {
 728             int i_position = 0;
 729             u16 i_id;
 730
 731 //            IfoPrintSpu( p_dvd, i );
 732             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 733
 734             if( spu_control & 0x80000000 )
 735             {
 736                 i_spu_nb++;
 737
 738                 /*  there are several streams for one spu */
 739                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 740                 {
 741                     /* 16:9 */
 742                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 743                     {
 744                     case 1:
 745                         i_position = spu_control & 0xff;
 746                         break;
 747                     case 2:
 748                         i_position = ( spu_control >> 8 ) & 0xff;
 749                         break;
 750                     default:
 751                         i_position = ( spu_control >> 16 ) & 0xff;
 752                         break;
 753                     }
 754                 }
 755                 else
 756                 {
 757                     /* 4:3 */
 758                     i_position = ( spu_control >> 24 ) & 0x7F;
 759                 }
 760
 761                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 762                 p_es = input_AddES( p_input, NULL, i_id, 0 );
 763                 p_es->i_stream_id = 0xbd;
 764                 p_es->i_type = DVD_SPU_ES;
 765                 p_es->i_cat = SPU_ES;
 766                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 767                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 768             }
 769         }
 770 #undef spu_control
 771
 772         /* FIXME: hack to check that the demuxer is ready, and set
 773          * the decoders */
 774         if( p_input->p_demux_module )
 775         {
 776             DvdReadLauchDecoders( p_input );
 777         }
 778
 779     } /* i_title >= 0 */
 780     else
 781     {
 782         p_area = p_input->stream.p_selected_area;
 783     }
 784
 785     /*
 786      * Chapter selection
 787      */
 788
 789     if( p_area->i_part != p_dvd->i_chapter )
 790     {
 791         if( ( p_area->i_part > 0 ) &&
 792             ( p_area->i_part <= p_area->i_part_nb ))
 793         {
 794             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 795             pgc_id = p_vts->vts_ptt_srpt->title[
 796                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 797             pgn = p_vts->vts_ptt_srpt->title[
 798                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 799
 800             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 801
 802             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 803             p_dvd->i_chapter = p_area->i_part;
 804             DvdReadFindCell( p_dvd );
 805
 806             p_dvd->i_pack_len = 0;
 807             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 808                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 809         }
 810         else
 811         {
 812             p_area->i_part = p_dvd->i_chapter;
 813         }
 814     }
 815 #undef p_vts
 816 #undef p_vmg
 817
 818     /* warn interface that something has changed */
 819     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 820     p_input->stream.b_seekable = 1;
 821     p_input->stream.b_changed = 1;
 822
 823     return 0;
 824 }
 825
 826
 827 /*****************************************************************************
 828  * DvdReadRead: reads data packets into the netlist.
 829  *****************************************************************************
 830  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 831  * EOF.
 832  *****************************************************************************/
 833 static int DvdReadRead( input_thread_t * p_input,
 834                         byte_t * p_buffer, size_t i_count )
 835 {
 836     thread_dvd_data_t *     p_dvd;
 837     byte_t *                p_buf;
 838     int                     i_blocks_once;
 839     int                     i_blocks;
 840     int                     i_read;
 841     int                     i_read_total;
 842     boolean_t               b_eot = 0;
 843
 844     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 845     p_buf = p_buffer;
 846
 847     /*
 848      * Playback by cell in this pgc, starting at the cell for our chapter.
 849      */
 850     i_blocks = OFF2LB( i_count );
 851     i_read_total = 0;
 852     i_read = 0;
 853
 854     while( i_blocks )
 855     {
 856         /*
 857          * End of pack, we select the following one
 858          */
 859         if( ! p_dvd->i_pack_len )
 860         {
 861             /*
 862              * Read NAV packet.
 863              */
 864             if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 865                            1, p_buf ) ) != 1 )
 866             {
 867                 intf_ErrMsg( "dvdread error: read failed for block %d",
 868                              p_dvd->i_next_vobu );
 869                 return -1;
 870             }
 871
 872             /* basic check to be sure we don't have a empty title
 873              * go to next title if so */
 874             //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
 875
 876             /*
 877              * Parse the contained dsi packet.
 878              */
 879
 880             DvdReadHandleDSI( p_dvd, p_buf );
 881
 882             /* End of File */
 883             if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 884             {
 885                 return 1;
 886             }
 887
 888             assert( p_dvd->i_pack_len < 1024 );
 889             /* FIXME: Ugly kludge: we send the pack block to the input for it
 890              * sometimes has a zero scr and restart the sync */
 891             p_dvd->i_cur_block ++;
 892             //p_dvd->i_pack_len++;
 893
 894             i_read_total++;
 895             p_buf += DVD_VIDEO_LB_LEN;
 896             i_blocks--;
 897         }
 898
 899         /*
 900          * Compute the number of blocks to read
 901          */
 902         i_blocks_once = p_dvd->i_pack_len >= i_blocks
 903                  ? i_blocks : p_dvd->i_pack_len;
 904         p_dvd->i_pack_len -= i_blocks_once;
 905
 906         /* Reads from DVD */
 907         i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 908                                 i_blocks_once, p_buf );
 909         if( i_read != i_blocks_once )
 910         {
 911             intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 912                          i_read, i_blocks_once, p_dvd->i_cur_block );
 913             return -1;
 914         }
 915
 916         i_blocks -= i_read;
 917         i_read_total += i_read;
 918         p_dvd->i_cur_block += i_read;
 919         p_buf += LB2OFF( i_read );
 920
 921     }
 922 /*
 923     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 924 */
 925
 926     vlc_mutex_lock( &p_input->stream.stream_lock );
 927
 928     p_input->stream.p_selected_area->i_tell =
 929         LB2OFF( p_dvd->i_cur_block ) -
 930             p_input->stream.p_selected_area->i_start;
 931
 932     if( p_dvd->b_eoc )
 933     {
 934         /* We modify i_part only at end of chapter not to erase
 935          * some modification from the interface */
 936         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 937         p_dvd->b_eoc = 0;
 938     }
 939
 940     if( p_input->stream.p_selected_area->i_tell
 941             >= p_input->stream.p_selected_area->i_size || b_eot )
 942     {
 943         if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
 944                         p_input->stream.i_area_nb )
 945         {
 946             /* EOF */
 947             vlc_mutex_unlock( &p_input->stream.stream_lock );
 948             return 1;
 949         }
 950
 951         /* EOT */
 952         intf_WarnMsg( 4, "dvd info: new title" );
 953         DvdReadSetArea( p_input, p_input->stream.pp_areas[
 954                         p_input->stream.p_selected_area->i_id+1] );
 955         vlc_mutex_unlock( &p_input->stream.stream_lock );
 956         return 0;
 957     }
 958
 959     vlc_mutex_unlock( &p_input->stream.stream_lock );
 960
 961     return LB2OFF( i_read_total );
 962 }
 963 #undef p_pgc
 964
 965 /*****************************************************************************
 966  * DvdReadSeek : Goes to a given position on the stream.
 967  *****************************************************************************
 968  * This one is used by the input and translate chronological position from
 969  * input to logical position on the device.
 970  * The lock should be taken before calling this function.
 971  *****************************************************************************/
 972 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 973 {
 974     thread_dvd_data_t *     p_dvd;
 975     int                     i_lb;
 976     int                     i_tmp;
 977     int                     i_chapter = 0;
 978     int                     i_cell = 0;
 979     int                     i_vobu = 0;
 980     int                     i_sub_cell = 0;
 981
 982     vlc_mutex_lock( &p_input->stream.stream_lock );
 983     i_off += p_input->stream.p_selected_area->i_start;
 984     vlc_mutex_unlock( &p_input->stream.stream_lock );
 985
 986     i_lb = OFF2LB( i_off );
 987     p_dvd = ( thread_dvd_data_t * )p_input->p_access_data;
 988
 989     /* find cell */
 990     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 991     {
 992         i_cell++;
 993     }
 994
 995     /* find chapter */
 996     do
 997     {
 998         pgc_t *     p_pgc;
 999         int         pgc_id, pgn;
1000
1001         i_chapter++;
1002         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1003                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1004         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1005                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1006
1007         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1008         i_tmp = p_pgc->program_map[pgn-1];
1009
1010     } while( i_tmp <= i_cell );
1011
1012     /* find vobu */
1013     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1014             <= i_lb )
1015     {
1016         i_vobu++;
1017     }
1018
1019     /* find sub_cell */
1020     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1021             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1022     {
1023         i_sub_cell++;
1024     }
1025
1026 /*
1027     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1028             i_cell, i_sub_cell,i_chapter, i_vobu,
1029             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1030             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1031             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1032 */
1033     p_dvd->i_cur_block = i_lb;
1034     p_dvd->i_next_vobu =
1035         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1036     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1037     p_dvd->i_cur_cell = i_cell;
1038     p_dvd->i_chapter = i_chapter;
1039     DvdReadFindCell( p_dvd );
1040
1041     vlc_mutex_lock( &p_input->stream.stream_lock );
1042     p_input->stream.p_selected_area->i_tell =
1043         LB2OFF ( p_dvd->i_cur_block )
1044          - p_input->stream.p_selected_area->i_start;
1045     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1046     vlc_mutex_unlock( &p_input->stream.stream_lock );
1047
1048     return;
1049 }
1050
1051 /*****************************************************************************
1052  * DvdReadHandleDSI
1053  *****************************************************************************/
1054 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1055 {
1056     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1057
1058     /*
1059      * Determine where we go next.  These values are the ones we mostly
1060      * care about.
1061      */
1062     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1063
1064     /*
1065      * If we're not at the end of this cell, we can determine the next
1066      * VOBU to display using the VOBU_SRI information section of the
1067      * DSI.  Using this value correctly follows the current angle,
1068      * avoiding the doubled scenes in The Matrix, and makes our life
1069      * really happy.
1070      */
1071     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1072     {
1073 #if 1
1074         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1075         {
1076             case 0x4:
1077                 /* interleaved unit with no angle */
1078                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1079                 {
1080                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1081                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1082                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1083                 }
1084                 else
1085                 {
1086                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1087                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1088                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1089                 }
1090                 break;
1091             case 0x5:
1092                 /* vobu is end of ilvu */
1093                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1094                 {
1095                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1096                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1097                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1098
1099                     break;
1100                 }
1101             case 0x6:
1102                 /* vobu is beginning of ilvu */
1103             case 0x9:
1104                 /* next scr is 0 */
1105             case 0xa:
1106                 /* entering interleaved section */
1107             case 0x8:
1108                 /* non interleaved cells in interleaved section */
1109             default:
1110                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1111                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1112                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1113                 break;
1114         }
1115 #else
1116         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1117             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1118         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1119 #endif
1120     }
1121     else
1122     {
1123         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1124         DvdReadFindCell( p_dvd );
1125
1126         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1127         p_dvd->i_next_vobu =
1128             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1129     }
1130
1131 #if 0
1132     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1133             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1134             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1135             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1136             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1137             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1138
1139     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1140             p_dvd->dsi_pack.sml_pbi.category,
1141             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1142             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1143             p_dvd->dsi_pack.sml_pbi.size );
1144
1145     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1146             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1147             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1148             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1149 #endif
1150 }
1151
1152 /*****************************************************************************
1153  * DvdReadFindCell
1154  *****************************************************************************/
1155 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1156 {
1157     int         pgc_id, pgn;
1158     int         i = 0;
1159     pgc_t *     p_pgc;
1160 #define cell p_dvd->p_cur_pgc->cell_playback
1161     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1162     {
1163 #if 0
1164         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1165         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1166 #else
1167         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1168
1169         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1170         {
1171             i++;
1172         }
1173         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1174 #endif
1175     }
1176     else
1177     {
1178         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1179     }
1180 #undef cell
1181     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1182                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1183     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1184                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1185     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1186
1187     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1188     {
1189         p_dvd->i_chapter++;
1190         p_dvd->b_eoc = 1;
1191     }
1192 }
1193
1194 /*****************************************************************************
1195  * DvdReadLaunchDecoders
1196  *****************************************************************************/
1197 static void DvdReadLauchDecoders( input_thread_t * p_input )
1198 {
1199     thread_dvd_data_t *  p_dvd;
1200
1201     p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
1202
1203     if( p_main->b_video )
1204     {
1205         input_SelectES( p_input, p_input->stream.pp_es[0] );
1206     }
1207
1208     if( p_main->b_audio )
1209     {
1210         /* For audio: first one if none or a not existing one specified */
1211         int i_audio = config_GetIntVariable( "input_channel" );
1212         if( i_audio < 0 /*|| i_audio > i_audio_nb*/ )
1213         {
1214             config_PutIntVariable( "input_channel", 1 );
1215             i_audio = 1;
1216         }
1217         if( i_audio > 0/* && i_audio_nb > 0*/ )
1218         {
1219             if( config_GetIntVariable( "input_audio" ) == REQUESTED_AC3 )
1220             {
1221                 int     i_ac3 = i_audio;
1222                 while( ( p_input->stream.pp_es[i_ac3]->i_type !=
1223                        AC3_AUDIO_ES ) && ( i_ac3 <=
1224                        p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams ) )
1225                 {
1226                     i_ac3++;
1227                 }
1228                 if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
1229                 {
1230                     input_SelectES( p_input,
1231                                     p_input->stream.pp_es[i_ac3] );
1232                 }
1233             }
1234             else
1235             {
1236                 input_SelectES( p_input,
1237                                 p_input->stream.pp_es[i_audio] );
1238             }
1239         }
1240     }
1241
1242     if( p_main->b_video )
1243     {
1244         /* for spu, default is none */
1245         int i_spu = config_GetIntVariable( "input_subtitle" );
1246         if( i_spu < 0 /*|| i_spu > i_spu_nb*/ )
1247         {
1248             config_PutIntVariable( "input_subtitle", 0 );
1249             i_spu = 0;
1250         }
1251         if( i_spu > 0 /*&& i_spu_nb > 0*/ )
1252         {
1253             i_spu += p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams;
1254             input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
1255         }
1256     }
1257 }