git.sesse.net Git - vlc/blob - modules/access/dvdread/input.c

   1 /*****************************************************************************
   2  * input.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, 2003 VideoLAN
   9  * $Id: input.c,v 1.24 2004/03/03 20:39:51 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 <vlc/vlc.h>
  38 #include <vlc/input.h>
  39
  40 #include "../../demux/mpeg/system.h"
  41
  42 #ifdef HAVE_UNISTD_H
  43 #   include <unistd.h>
  44 #endif
  45
  46 #include <fcntl.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49 #include <string.h>
  50 #include <errno.h>
  51 #include <assert.h>
  52
  53 #ifdef STRNCASECMP_IN_STRINGS_H
  54 #   include <strings.h>
  55 #endif
  56
  57 #if defined( WIN32 )
  58 #   include <io.h>                                                 /* read() */
  59 #endif
  60
  61 #include <dvdread/dvd_reader.h>
  62 #include <dvdread/ifo_types.h>
  63 #include <dvdread/ifo_read.h>
  64 #include <dvdread/nav_read.h>
  65 #include <dvdread/nav_print.h>
  66
  67 #include "input.h"
  68
  69 #include "iso_lang.h"
  70
  71 /* how many blocks DVDRead will read in each loop */
  72 #define DVD_BLOCK_READ_ONCE 64
  73
  74 /*****************************************************************************
  75  * Private structure
  76  *****************************************************************************/
  77 struct demux_sys_t
  78 {
  79     module_t *   p_module;
  80     mpeg_demux_t mpeg;
  81 };
  82
  83 /*****************************************************************************
  84  * Local prototypes
  85  *****************************************************************************/
  86 /* called from outside */
  87 static int     DvdReadDemux    ( input_thread_t * );
  88 static int     DvdReadRewind   ( input_thread_t * );
  89
  90 static int     DvdReadSetArea    ( input_thread_t *, input_area_t * );
  91 static int     DvdReadSetProgram ( input_thread_t *, pgrm_descriptor_t * );
  92 static ssize_t DvdReadRead       ( input_thread_t *, byte_t *, size_t );
  93 static void    DvdReadSeek       ( input_thread_t *, off_t );
  94
  95 /* called only from here */
  96 static void    DvdReadLauchDecoders( input_thread_t * p_input );
  97 static void    DvdReadHandleDSI( thread_dvd_data_t * p_dvd, uint8_t * p_data );
  98 static void    DvdReadFindCell ( thread_dvd_data_t * p_dvd );
  99
 100 /*
 101  * Data demux functions
 102  */
 103
 104 /*****************************************************************************
 105  * InitDVD: initialize DVD structures
 106  *****************************************************************************/
 107 int E_(InitDVD) ( vlc_object_t *p_this )
 108 {
 109     input_thread_t *p_input = (input_thread_t *)p_this;
 110     demux_sys_t *   p_demux;
 111
 112     if( p_input->stream.i_method != INPUT_METHOD_DVD )
 113     {
 114         return VLC_EGENERIC;
 115     }
 116
 117     p_demux = p_input->p_demux_data = malloc( sizeof(demux_sys_t ) );
 118     if( p_demux == NULL )
 119     {
 120         return VLC_ENOMEM;
 121     }
 122
 123     p_input->p_private = (void*)&p_demux->mpeg;
 124     p_demux->p_module = module_Need( p_input, "mpeg-system", NULL, 0 );
 125     if( p_demux->p_module == NULL )
 126     {
 127         free( p_input->p_demux_data );
 128         return VLC_ENOMOD;
 129     }
 130
 131     p_input->pf_demux = DvdReadDemux;
 132     p_input->pf_demux_control = demux_vaControlDefault;
 133     p_input->pf_rewind = NULL;
 134
 135     vlc_mutex_lock( &p_input->stream.stream_lock );
 136
 137     DvdReadLauchDecoders( p_input );
 138
 139     vlc_mutex_unlock( &p_input->stream.stream_lock );
 140
 141     return VLC_SUCCESS;
 142 }
 143
 144 /*****************************************************************************
 145  * EndDVD: end DVD structures
 146  *****************************************************************************/
 147 void E_(EndDVD) ( vlc_object_t *p_this )
 148 {
 149     input_thread_t *p_input = (input_thread_t *)p_this;
 150
 151     module_Unneed( p_input, p_input->p_demux_data->p_module );
 152     free( p_input->p_demux_data );
 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             ssize_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         p_input->p_demux_data->mpeg.pf_demux_ps( 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  * OpenDVD: open libdvdread
 236  *****************************************************************************/
 237 int E_(OpenDVD) ( vlc_object_t *p_this )
 238 {
 239     input_thread_t *        p_input = (input_thread_t *)p_this;
 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     unsigned int            i_title = 1;
 248     unsigned int            i_chapter = 1;
 249     unsigned int            i_angle = 1;
 250     unsigned int            i;
 251
 252     psz_source = strdup( p_input->psz_name );
 253     if( psz_source == NULL )
 254     {
 255         return VLC_ENOMEM;
 256     }
 257
 258     p_input->pf_read = DvdReadRead;
 259     p_input->pf_seek = DvdReadSeek;
 260     p_input->pf_set_area = DvdReadSetArea;
 261     p_input->pf_set_program = DvdReadSetProgram;
 262
 263     /* Start with the end, because you could have :
 264      * dvdread:/Volumes/my@toto/VIDEO_TS@1,1
 265      * (yes, this is kludgy). */
 266     for ( psz_parser = psz_source + strlen(psz_source) - 1;
 267           psz_parser >= psz_source && *psz_parser != '@';
 268           psz_parser-- );
 269
 270     if( psz_parser >= psz_source && *psz_parser == '@' )
 271     {
 272         /* Found options */
 273         *psz_parser = '\0';
 274         ++psz_parser;
 275
 276         i_title = (int)strtol( psz_parser, &psz_next, 10 );
 277         if( *psz_next )
 278         {
 279             psz_parser = psz_next + 1;
 280             i_chapter = (int)strtol( psz_parser, &psz_next, 10 );
 281             if( *psz_next )
 282             {
 283                 i_angle = (int)strtol( psz_next + 1, NULL, 10 );
 284             }
 285         }
 286
 287         i_title = i_title ? i_title : 1;
 288         i_chapter = i_chapter ? i_chapter : 1;
 289         i_angle = i_angle ? i_angle : 1;
 290     }
 291
 292     if( !*psz_source )
 293     {
 294         free( psz_source );
 295         if( !p_input->psz_access )
 296         {
 297             return VLC_EGENERIC;
 298         }
 299         psz_source = config_GetPsz( p_input, "dvd" );
 300         if( !psz_source ) return VLC_EGENERIC;
 301     }
 302
 303     if( stat( psz_source, &stat_info ) == -1 )
 304     {
 305         msg_Warn( p_input, "cannot stat() source `%s' (%s)",
 306                            psz_source, strerror(errno) );
 307         free( psz_source );
 308         return VLC_EGENERIC;
 309     }
 310     if( !S_ISBLK(stat_info.st_mode) &&
 311         !S_ISCHR(stat_info.st_mode) &&
 312         !S_ISDIR(stat_info.st_mode) )
 313     {
 314         msg_Warn( p_input, "dvdread module discarded (not a valid source)" );
 315         free( psz_source );
 316         return VLC_EGENERIC;
 317     }
 318
 319     msg_Dbg( p_input, "dvdroot=%s title=%d chapter=%d angle=%d",
 320                       psz_source, i_title, i_chapter, i_angle );
 321
 322
 323     p_dvdread = DVDOpen( psz_source );
 324
 325     /* free allocated strings */
 326     free( psz_source );
 327
 328     if( ! p_dvdread )
 329     {
 330         msg_Err( p_input, "libdvdcss cannot open source" );
 331         return VLC_EGENERIC;
 332     }
 333
 334     /* set up input  */
 335     p_input->i_mtu = 0;
 336
 337     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 338     if( p_dvd == NULL )
 339     {
 340         msg_Err( p_input, "out of memory" );
 341         return VLC_ENOMEM;
 342     }
 343
 344     p_dvd->p_dvdread = p_dvdread;
 345     p_dvd->p_title = NULL;
 346     p_dvd->p_vts_file = NULL;
 347
 348
 349     p_input->p_access_data = (void *)p_dvd;
 350
 351     /* Ifo allocation & initialisation */
 352     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 353     {
 354         msg_Warn( p_input, "cannot open VMG info" );
 355         free( p_dvd );
 356         return VLC_EGENERIC;
 357     }
 358     msg_Dbg( p_input, "VMG opened" );
 359
 360     /* Set stream and area data */
 361     vlc_mutex_lock( &p_input->stream.stream_lock );
 362
 363     p_input->stream.i_method = INPUT_METHOD_DVD;
 364
 365     /* If we are here we can control the pace... */
 366     p_input->stream.b_pace_control = VLC_TRUE;
 367     p_input->stream.b_seekable = VLC_TRUE;
 368
 369     p_input->stream.p_selected_area->i_size = 0;
 370     p_input->stream.p_selected_area->i_tell = 0;
 371
 372     /* Initialize ES structures */
 373     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 374
 375     /* disc input method */
 376     p_input->stream.i_method = INPUT_METHOD_DVD;
 377
 378 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 379     msg_Dbg( p_input, "number of titles: %d", tt_srpt->nr_of_srpts );
 380
 381 #define area p_input->stream.pp_areas
 382     /* We start from 1 here since the default area 0
 383      * is reserved for video_ts.vob */
 384     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 385     {
 386         /* Titles are Program Chains */
 387         input_AddArea( p_input, i, tt_srpt->title[i-1].nr_of_ptts );
 388
 389         /* Absolute start offset and size
 390          * We can only set that with vts ifo, so we do it during the
 391          * first call to DVDSetArea */
 392         area[i]->i_start = 0;
 393         area[i]->i_size = 0;
 394
 395         /* Default Chapter */
 396         area[i]->i_part = 1;
 397
 398         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 399     }
 400 #undef area
 401
 402     p_dvd->i_title = i_title <= tt_srpt->nr_of_srpts ? i_title : 1;
 403 #undef tt_srpt
 404
 405     p_area = p_input->stream.pp_areas[p_dvd->i_title];
 406     p_dvd->i_chapter = i_chapter;
 407
 408     p_dvd->i_chapter = i_chapter < p_area->i_part_nb ? i_chapter : 1;
 409     p_area->i_part = p_dvd->i_chapter;
 410
 411     p_dvd->i_angle = i_angle;
 412
 413     /* set title, chapter, audio and subpic */
 414     if( DvdReadSetArea( p_input, p_area ) )
 415     {
 416         vlc_mutex_unlock( &p_input->stream.stream_lock );
 417         return VLC_EGENERIC;
 418     }
 419
 420     vlc_mutex_unlock( &p_input->stream.stream_lock );
 421
 422     if( !p_input->psz_demux || !*p_input->psz_demux )
 423     {
 424         p_input->psz_demux = "dvdread";
 425     }
 426
 427     return VLC_SUCCESS;
 428 }
 429
 430 /*****************************************************************************
 431  * CloseDVD: close libdvdread
 432  *****************************************************************************/
 433 void E_(CloseDVD) ( vlc_object_t *p_this )
 434 {
 435     input_thread_t *    p_input = (input_thread_t *)p_this;
 436     thread_dvd_data_t * p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 437
 438     /* This is a very nasty side-effect in the DVD plug-in : language
 439      * selection here influences language selection of other streams. So
 440      * unset those variables (may not be what the user wants).
 441      * FIXME FIXME FIXME FIXME FIXME FIXME FIXME --Meuuh */
 442     config_PutInt( p_input, "audio-channel", -1 );
 443     config_PutInt( p_input, "spu-channel", -1 );
 444
 445     /* close libdvdread */
 446     DVDCloseFile( p_dvd->p_title );
 447     ifoClose( p_dvd->p_vts_file );
 448     ifoClose( p_dvd->p_vmg_file );
 449
 450     DVDClose( p_dvd->p_dvdread );
 451     free( p_dvd );
 452     p_input->p_access_data = NULL;
 453
 454 }
 455
 456 /*****************************************************************************
 457  * DvdReadSetProgram: Does nothing, a DVD is mono-program
 458  *****************************************************************************/
 459 static int DvdReadSetProgram( input_thread_t * p_input,
 460                               pgrm_descriptor_t * p_program )
 461 {
 462     if( p_input->stream.p_selected_program != p_program )
 463     {
 464         thread_dvd_data_t *  p_dvd;
 465         vlc_value_t val;
 466
 467         p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
 468         p_dvd->i_angle = p_program->i_number;
 469
 470         memcpy( p_program, p_input->stream.p_selected_program,
 471                 sizeof(pgrm_descriptor_t) );
 472         p_program->i_number = p_dvd->i_angle;
 473         p_input->stream.p_selected_program = p_program;
 474
 475         msg_Dbg( p_input, "angle %d selected", p_dvd->i_angle );
 476
 477         /* Update the navigation variables without triggering a callback */
 478         val.i_int = p_program->i_number;
 479         var_Change( p_input, "program", VLC_VAR_SETVALUE, &val, NULL );
 480     }
 481
 482     return VLC_SUCCESS;
 483 }
 484
 485 #define p_pgc         p_dvd->p_cur_pgc
 486
 487 /*****************************************************************************
 488  * DvdReadSetArea: initialize input data for title x, chapter y.
 489  * It should be called for each user navigation request.
 490  *****************************************************************************
 491  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 492  * Note that you have to take the lock before entering here.
 493  *****************************************************************************/
 494 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 495 {
 496     thread_dvd_data_t *  p_dvd;
 497     int                  pgc_id = 0;
 498     int                  pgn = 0;
 499     vlc_value_t          val;
 500
 501     p_dvd = (thread_dvd_data_t*)p_input->p_access_data;
 502
 503     /* we can't use the interface slider until initilization is complete */
 504     p_input->stream.b_seekable = VLC_FALSE;
 505
 506     if( p_area != p_input->stream.p_selected_area )
 507     {
 508         es_descriptor_t *    p_es;
 509         unsigned int         i_cell = 0;
 510         unsigned int         i_audio_nb = 0;
 511         unsigned int         i_spu_nb = 0;
 512         unsigned int         i;
 513
 514 #define p_vmg         p_dvd->p_vmg_file
 515 #define p_vts         p_dvd->p_vts_file
 516         if( p_dvd->p_title != NULL )
 517         {
 518             DVDCloseFile( p_dvd->p_title );
 519         }
 520
 521         if( p_vts != NULL )
 522         {
 523             ifoClose( p_vts );
 524         }
 525
 526         /* Reset the Chapter position of the old title */
 527         p_input->stream.p_selected_area->i_part = 1;
 528
 529         /*
 530          *  We have to load all title information
 531          */
 532         /* Change the default area */
 533         p_input->stream.p_selected_area = p_area;
 534
 535         msg_Dbg( p_input, "open VTS %d, for title %d",
 536             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 537             p_area->i_id );
 538
 539         /* ifo vts */
 540         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 541                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 542         {
 543             msg_Err( p_input, "fatal error in vts ifo" );
 544             ifoClose( p_vmg );
 545             DVDClose( p_dvd->p_dvdread );
 546             return VLC_EGENERIC;
 547         }
 548
 549         /* title position inside the selected vts */
 550         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 551
 552         /*
 553          * Set selected title start
 554          */
 555         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 556         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 557         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 558         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 559
 560         p_area->i_start =
 561             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 562
 563         msg_Dbg( p_input, "start %d vts_title %d pgc %d pgn %d",
 564                   p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 565
 566         /*
 567          * Find title end
 568          */
 569         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 570
 571         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 572         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 573
 574         msg_Dbg( p_input, "start "I64Fd" size "I64Fd" end %d",
 575                   p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 576
 577         /*
 578          * Set properties for current chapter
 579          */
 580         /* Remeber current chapter */
 581         p_dvd->i_chapter = p_area->i_part;
 582         p_dvd->b_eoc = VLC_FALSE;
 583
 584         pgc_id = p_vts->vts_ptt_srpt->title[
 585                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 586         pgn = p_vts->vts_ptt_srpt->title[
 587                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 588
 589         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 590         p_dvd->i_pack_len = 0;
 591         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 592         DvdReadFindCell( p_dvd );
 593
 594         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 595             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 596
 597         /*
 598          * Angle management
 599          */
 600         p_dvd->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 601
 602         if( p_dvd->i_angle > p_dvd->i_angle_nb )
 603         {
 604             p_dvd->i_angle = 1;
 605         }
 606
 607         /*
 608          * We've got enough info, time to open the title set data.
 609          */
 610         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 611             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 612             DVD_READ_TITLE_VOBS ) ) )
 613         {
 614             msg_Err( p_input, "cannot open title (VTS_%02d_1.VOB)",
 615                      p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 616             ifoClose( p_vts );
 617             ifoClose( p_vmg );
 618             DVDClose( p_dvd->p_dvdread );
 619             return VLC_EGENERIC;
 620         }
 621
 622 //        IfoPrintTitle( p_dvd );
 623
 624         /*
 625          * Destroy obsolete ES by reinitializing program 0
 626          * and find all ES in title with ifo data
 627          */
 628         if( p_input->stream.pp_programs != NULL )
 629         {
 630             /* We don't use input_EndStream here since
 631              * we keep area structures */
 632
 633             while( p_input->stream.i_es_number )
 634             {
 635                 input_DelES( p_input, p_input->stream.pp_es[0] );
 636             }
 637
 638             while( p_input->stream.i_pgrm_number )
 639             {
 640                 input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 641             }
 642
 643             if( p_input->stream.pp_selected_es )
 644             {
 645                 free( p_input->stream.pp_selected_es );
 646                 p_input->stream.pp_selected_es = NULL;
 647             }
 648             p_input->stream.i_selected_es_number = 0;
 649         }
 650
 651         input_AddProgram( p_input, 1, sizeof( stream_ps_data_t ) );
 652         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 653
 654         for( i = 1 ; i < p_dvd->i_angle_nb ; i++ )
 655         {
 656             input_AddProgram( p_input, i+1, 0 );
 657         }
 658
 659         DvdReadSetProgram( p_input,
 660                            p_input->stream.pp_programs[p_dvd->i_angle-1] );
 661
 662         /* No PSM to read in DVD mode, we already have all information */
 663         p_input->stream.p_selected_program->b_is_ok = VLC_TRUE;
 664
 665         p_es = NULL;
 666
 667         /* ES 0 -> video MPEG2 */
 668 //        IfoPrintVideo( p_dvd );
 669
 670         p_es = input_AddES( p_input, NULL, 0xe0, VIDEO_ES, NULL, 0 );
 671         p_es->i_stream_id = 0xe0;
 672         p_es->i_fourcc = VLC_FOURCC('m','p','g','v');
 673
 674 #define audio_control \
 675     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 676         /* Audio ES, in the order they appear in .ifo */
 677         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 678         {
 679             int i_position = 0;
 680             uint16_t i_id;
 681
 682 //            IfoPrintAudio( p_dvd, i );
 683
 684             /* audio channel is active if first byte is 0x80 */
 685             if( audio_control & 0x8000 )
 686             {
 687                 i_audio_nb++;
 688                 i_position = ( audio_control & 0x7F00 ) >> 8;
 689
 690                 msg_Dbg( p_input, "audio position  %d", i_position );
 691                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 692                 {
 693                 case 0x00:              /* A52 */
 694                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 695                     p_es = input_AddES( p_input, NULL, i_id, AUDIO_ES,
 696                                         DecodeLanguage(
 697                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ), 0 );
 698                     p_es->i_stream_id = 0xbd;
 699                     p_es->i_fourcc = VLC_FOURCC('a','5','2','b');
 700
 701                     break;
 702                 case 0x02:
 703                 case 0x03:              /* MPEG audio */
 704                     i_id = 0xc0 + i_position;
 705                     p_es = input_AddES( p_input, NULL, i_id, AUDIO_ES,
 706                                         DecodeLanguage(
 707                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ), 0 );
 708                     p_es->i_stream_id = i_id;
 709                     p_es->i_fourcc = VLC_FOURCC('m','p','g','a');
 710
 711                     break;
 712                 case 0x04:              /* LPCM */
 713
 714                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 715                     p_es = input_AddES( p_input, NULL, i_id, AUDIO_ES,
 716                                         DecodeLanguage(
 717                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ), 0 );
 718                     p_es->i_stream_id = i_id;
 719                     p_es->i_fourcc = VLC_FOURCC('l','p','c','b');
 720
 721                     break;
 722                 case 0x06:              /* DTS */
 723                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 724                     msg_Err( p_input, "DTS audio not handled yet"
 725                                       "(0x%x)", i_id );
 726                     break;
 727                 default:
 728                     i_id = 0;
 729                     msg_Err( p_input, "unknown audio type %.2x",
 730                           p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 731                 }
 732             }
 733         }
 734 #undef audio_control
 735 #define spu_control \
 736     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 737
 738         /* Sub Picture ES */
 739
 740         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 741         {
 742             int i_position = 0;
 743             uint16_t i_id;
 744
 745 //            IfoPrintSpu( p_dvd, i );
 746             msg_Dbg( p_input, "spu %d 0x%02x", i, spu_control );
 747
 748             if( spu_control & 0x80000000 )
 749             {
 750                 i_spu_nb++;
 751
 752                 /*  there are several streams for one spu */
 753                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 754                 {
 755                     /* 16:9 */
 756                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 757                     {
 758                     case 1:
 759                         i_position = spu_control & 0xff;
 760                         break;
 761                     case 2:
 762                         i_position = ( spu_control >> 8 ) & 0xff;
 763                         break;
 764                     default:
 765                         i_position = ( spu_control >> 16 ) & 0xff;
 766                         break;
 767                     }
 768                 }
 769                 else
 770                 {
 771                     /* 4:3 */
 772                     i_position = ( spu_control >> 24 ) & 0x7F;
 773                 }
 774
 775                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 776                 p_es = input_AddES( p_input, NULL, i_id, SPU_ES,
 777                                     DecodeLanguage(
 778                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ), 0 );
 779                 p_es->i_stream_id = 0xbd;
 780                 p_es->i_fourcc = VLC_FOURCC('s','p','u','b');
 781             }
 782         }
 783 #undef spu_control
 784
 785         /* FIXME: hack to check that the demuxer is ready, and set
 786          * the decoders */
 787         if( p_input->p_demux )
 788         {
 789             DvdReadLauchDecoders( p_input );
 790         }
 791
 792         /* Update the navigation variables without triggering a callback */
 793         val.i_int = p_area->i_id;
 794         var_Change( p_input, "title", VLC_VAR_SETVALUE, &val, NULL );
 795         var_Change( p_input, "chapter", VLC_VAR_CLEARCHOICES, NULL, NULL );
 796         for( i = 1; i <= p_area->i_part_nb; i++ )
 797         {
 798             val.i_int = i;
 799             var_Change( p_input, "chapter", VLC_VAR_ADDCHOICE, &val, NULL );
 800         }
 801
 802     } /* i_title >= 0 */
 803     else
 804     {
 805         p_area = p_input->stream.p_selected_area;
 806     }
 807
 808     /*
 809      * Chapter selection
 810      */
 811
 812     if( p_area->i_part != p_dvd->i_chapter )
 813     {
 814         if( ( p_area->i_part > 0 ) &&
 815             ( p_area->i_part <= p_area->i_part_nb ))
 816         {
 817             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 818             pgc_id = p_vts->vts_ptt_srpt->title[
 819                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 820             pgn = p_vts->vts_ptt_srpt->title[
 821                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 822
 823             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 824
 825             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 826             p_dvd->i_chapter = p_area->i_part;
 827             DvdReadFindCell( p_dvd );
 828
 829             p_dvd->i_pack_len = 0;
 830             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 831                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 832         }
 833         else
 834         {
 835             p_area->i_part = p_dvd->i_chapter;
 836         }
 837     }
 838 #undef p_vts
 839 #undef p_vmg
 840
 841     /* warn interface that something has changed */
 842     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 843     p_input->stream.b_seekable = VLC_TRUE;
 844     p_input->stream.b_changed = VLC_TRUE;
 845
 846     /* Update the navigation variables without triggering a callback */
 847     val.i_int = p_area->i_part;
 848     var_Change( p_input, "chapter", VLC_VAR_SETVALUE, &val, NULL );
 849
 850     return VLC_SUCCESS;
 851 }
 852
 853
 854 /*****************************************************************************
 855  * DvdReadRead: reads data packets.
 856  *****************************************************************************
 857  * Returns -1 in case of error, 0 in case of EOF, otherwise the number of
 858  * bytes.
 859  *****************************************************************************/
 860 static ssize_t DvdReadRead( input_thread_t * p_input,
 861                             byte_t * p_buffer, size_t i_count )
 862 {
 863     thread_dvd_data_t *     p_dvd;
 864     byte_t *                p_buf;
 865     unsigned int            i_blocks_once;
 866     unsigned int            i_blocks;
 867     int                     i_read;
 868     int                     i_read_total;
 869     vlc_bool_t              b_eot = VLC_FALSE;
 870
 871     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 872     p_buf = p_buffer;
 873
 874     /*
 875      * Playback by cell in this pgc, starting at the cell for our chapter.
 876      */
 877     i_blocks = OFF2LB( i_count );
 878     i_read_total = 0;
 879     i_read = 0;
 880
 881     while( i_blocks )
 882     {
 883         /*
 884          * End of pack, we select the following one
 885          */
 886         if( ! p_dvd->i_pack_len )
 887         {
 888             /*
 889              * Read NAV packet.
 890              */
 891             if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 892                            1, p_buf ) ) != 1 )
 893             {
 894                 msg_Err( p_input, "read failed for block %d",
 895                                   p_dvd->i_next_vobu );
 896                 return -1;
 897             }
 898
 899             /* basic check to be sure we don't have a empty title
 900              * go to next title if so */
 901             //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
 902
 903             /*
 904              * Parse the contained dsi packet.
 905              */
 906
 907             DvdReadHandleDSI( p_dvd, p_buf );
 908
 909             /* End of title */
 910             if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 911             {
 912                 b_eot = 1;
 913                 break;
 914             }
 915
 916             assert( p_dvd->i_pack_len < 1024 );
 917             /* FIXME: Ugly kludge: we send the pack block to the input for it
 918              * sometimes has a zero scr and restart the sync */
 919             p_dvd->i_cur_block ++;
 920             //p_dvd->i_pack_len++;
 921
 922             i_read_total++;
 923             p_buf += DVD_VIDEO_LB_LEN;
 924             i_blocks--;
 925         }
 926
 927         /*
 928          * Compute the number of blocks to read
 929          */
 930         i_blocks_once = __MIN( p_dvd->i_pack_len, i_blocks );
 931         p_dvd->i_pack_len -= i_blocks_once;
 932
 933         /* Reads from DVD */
 934         i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 935                                 i_blocks_once, p_buf );
 936         if( (unsigned int)i_read != i_blocks_once )
 937         {
 938             msg_Err( p_input, "read failed for %d/%d blocks at 0x%02x",
 939                               i_read, i_blocks_once, p_dvd->i_cur_block );
 940             return -1;
 941         }
 942
 943         i_blocks -= i_read;
 944         i_read_total += i_read;
 945         p_dvd->i_cur_block += i_read;
 946         p_buf += LB2OFF( i_read );
 947
 948     }
 949 /*
 950     msg_Dbg( p_input, "i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 951 */
 952
 953     vlc_mutex_lock( &p_input->stream.stream_lock );
 954
 955     if( p_dvd->b_eoc )
 956     {
 957         /* We modify i_part only at end of chapter not to erase
 958          * some modification from the interface */
 959         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 960         p_dvd->b_eoc = VLC_FALSE;
 961     }
 962
 963     if( ( LB2OFF( p_dvd->i_cur_block )
 964           - p_input->stream.p_selected_area->i_start )
 965             >= p_input->stream.p_selected_area->i_size || b_eot )
 966     {
 967         if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
 968                         p_input->stream.i_area_nb )
 969         {
 970             /* EOF */
 971             vlc_mutex_unlock( &p_input->stream.stream_lock );
 972             return 0;
 973         }
 974
 975         /* EOT */
 976         msg_Dbg( p_input, "new title" );
 977         DvdReadSetArea( p_input, p_input->stream.pp_areas[
 978                         p_input->stream.p_selected_area->i_id+1] );
 979     }
 980
 981     vlc_mutex_unlock( &p_input->stream.stream_lock );
 982
 983     return LB2OFF( i_read_total );
 984 }
 985 #undef p_pgc
 986
 987 /*****************************************************************************
 988  * DvdReadSeek : Goes to a given position on the stream.
 989  *****************************************************************************
 990  * This one is used by the input and translate chronological position from
 991  * input to logical position on the device.
 992  * The lock should be taken before calling this function.
 993  *****************************************************************************/
 994 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 995 {
 996     thread_dvd_data_t *     p_dvd;
 997     unsigned int            i_lb;
 998     unsigned int            i_tmp;
 999     unsigned int            i_chapter = 0;
1000     unsigned int            i_cell = 0;
1001     unsigned int            i_vobu = 0;
1002     unsigned int            i_sub_cell = 0;
1003
1004     vlc_mutex_lock( &p_input->stream.stream_lock );
1005     i_off += p_input->stream.p_selected_area->i_start;
1006     vlc_mutex_unlock( &p_input->stream.stream_lock );
1007
1008     i_lb = OFF2LB( i_off );
1009     p_dvd = ( thread_dvd_data_t * )p_input->p_access_data;
1010
1011     /* find cell */
1012     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
1013     {
1014         i_cell++;
1015     }
1016
1017     /* find chapter */
1018     do
1019     {
1020         pgc_t *     p_pgc;
1021         int         pgc_id, pgn;
1022
1023         i_chapter++;
1024         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1025                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1026         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1027                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1028
1029         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1030         i_tmp = p_pgc->program_map[pgn-1];
1031
1032     } while( i_tmp <= i_cell );
1033
1034     /* find vobu */
1035     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1036             <= i_lb )
1037     {
1038         i_vobu++;
1039     }
1040
1041     /* find sub_cell */
1042     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1043             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1044     {
1045         i_sub_cell++;
1046     }
1047
1048 /*
1049     msg_Dbg( p_input, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1050             i_cell, i_sub_cell,i_chapter, i_vobu,
1051             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1052             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1053             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1054 */
1055     p_dvd->i_cur_block = i_lb;
1056     p_dvd->i_next_vobu =
1057         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1058     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1059     p_dvd->i_cur_cell = i_cell;
1060     p_dvd->i_chapter = i_chapter;
1061     DvdReadFindCell( p_dvd );
1062
1063     vlc_mutex_lock( &p_input->stream.stream_lock );
1064     p_input->stream.p_selected_area->i_tell =
1065         LB2OFF ( p_dvd->i_cur_block )
1066          - p_input->stream.p_selected_area->i_start;
1067     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1068     vlc_mutex_unlock( &p_input->stream.stream_lock );
1069
1070     return;
1071 }
1072
1073 /*****************************************************************************
1074  * DvdReadHandleDSI
1075  *****************************************************************************/
1076 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, uint8_t * p_data )
1077 {
1078     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1079
1080     /*
1081      * Determine where we go next.  These values are the ones we mostly
1082      * care about.
1083      */
1084     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1085
1086     /*
1087      * If we're not at the end of this cell, we can determine the next
1088      * VOBU to display using the VOBU_SRI information section of the
1089      * DSI.  Using this value correctly follows the current angle,
1090      * avoiding the doubled scenes in The Matrix, and makes our life
1091      * really happy.
1092      */
1093     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1094     {
1095 #if 1
1096         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1097         {
1098             case 0x4:
1099                 /* interleaved unit with no angle */
1100                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != 0 )
1101                 {
1102                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1103                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1104                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1105                 }
1106                 else
1107                 {
1108                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1109                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1110                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1111                 }
1112                 break;
1113             case 0x5:
1114                 /* vobu is end of ilvu */
1115                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1116                 {
1117                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1118                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1119                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1120
1121                     break;
1122                 }
1123             case 0x6:
1124                 /* vobu is beginning of ilvu */
1125             case 0x9:
1126                 /* next scr is 0 */
1127             case 0xa:
1128                 /* entering interleaved section */
1129             case 0x8:
1130                 /* non interleaved cells in interleaved section */
1131             default:
1132                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1133                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1134                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1135                 break;
1136         }
1137 #else
1138         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1139             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1140         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1141 #endif
1142     }
1143     else
1144     {
1145         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1146         DvdReadFindCell( p_dvd );
1147
1148         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1149         p_dvd->i_next_vobu =
1150             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1151     }
1152
1153 #if 0
1154     msg_Dbg( p_input, 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1155              p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1156              p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1157              p_dvd->dsi_pack.dsi_gi.vobu_ea,
1158              p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1159              p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1160
1161     msg_Dbg( p_input, 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1162              p_dvd->dsi_pack.sml_pbi.category,
1163              p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1164              p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1165              p_dvd->dsi_pack.sml_pbi.size );
1166
1167     msg_Dbg( p_input, 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1168              p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1169              p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1170              p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1171 #endif
1172 }
1173
1174 /*****************************************************************************
1175  * DvdReadFindCell
1176  *****************************************************************************/
1177 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1178 {
1179     int         pgc_id, pgn;
1180     int         i = 0;
1181     pgc_t *     p_pgc;
1182 #define cell p_dvd->p_cur_pgc->cell_playback
1183     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1184     {
1185 #if 0
1186         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1187         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1188 #else
1189         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1190
1191         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1192         {
1193             i++;
1194         }
1195         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1196 #endif
1197     }
1198     else
1199     {
1200         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1201     }
1202 #undef cell
1203     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1204                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1205     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1206                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1207     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1208
1209     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1210     {
1211         p_dvd->i_chapter++;
1212         p_dvd->b_eoc = VLC_TRUE;
1213     }
1214 }
1215
1216 /*****************************************************************************
1217  * DvdReadLaunchDecoders
1218  *****************************************************************************/
1219 static void DvdReadLauchDecoders( input_thread_t * p_input )
1220 {
1221     thread_dvd_data_t * p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
1222     int i_audio, i_spu;
1223
1224     input_SelectES( p_input, p_input->stream.pp_es[0] );
1225
1226     /* For audio: first one if none or a not existing one specified */
1227     i_audio = config_GetInt( p_input, "audio-channel" );
1228     if( i_audio < 0 /*|| i_audio > i_audio_nb*/ )
1229     {
1230         config_PutInt( p_input, "audio-channel", 1 );
1231         i_audio = 1;
1232     }
1233     if( i_audio > 0/* && i_audio_nb > 0*/ )
1234     {
1235         if( config_GetInt( p_input, "audio-type" ) == REQUESTED_A52 )
1236         {
1237             int     i_a52 = i_audio;
1238             while( ( p_input->stream.pp_es[i_a52]->i_fourcc !=
1239                    VLC_FOURCC('a','5','2','b') ) && ( i_a52 <=
1240                    p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams ) )
1241             {
1242                 i_a52++;
1243             }
1244             if( p_input->stream.pp_es[i_a52]->i_fourcc
1245                  == VLC_FOURCC('a','5','2','b') )
1246             {
1247                 input_SelectES( p_input, p_input->stream.pp_es[i_a52] );
1248             }
1249         }
1250         else
1251         {
1252             input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
1253         }
1254     }
1255
1256     /* for spu, default is none */
1257     i_spu = config_GetInt( p_input, "spu-channel" );
1258     if( i_spu < 0 /*|| i_spu > i_spu_nb*/ )
1259     {
1260         config_PutInt( p_input, "spu-channel", 0 );
1261         i_spu = 0;
1262     }
1263     if( i_spu > 0 /*&& i_spu_nb > 0*/ )
1264     {
1265         i_spu += p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams;
1266         input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
1267     }
1268 }