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

   1 /*****************************************************************************
   2  * dvdread.c : DvdRead input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Stéphane Borel <stef@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_input.h>
  36 #include <vlc_access.h>
  37 #include <vlc_charset.h>
  38 #include <vlc_interface.h>
  39 #include <vlc_dialog.h>
  40
  41 #include <vlc_iso_lang.h>
  42
  43 #include "../demux/ps.h"
  44
  45 #ifdef HAVE_UNISTD_H
  46 #   include <unistd.h>
  47 #endif
  48
  49 #include <sys/types.h>
  50
  51 #include <dvdread/dvd_reader.h>
  52 #include <dvdread/ifo_types.h>
  53 #include <dvdread/ifo_read.h>
  54 #include <dvdread/nav_read.h>
  55 #include <dvdread/nav_print.h>
  56
  57 #include <assert.h>
  58
  59 /*****************************************************************************
  60  * Module descriptor
  61  *****************************************************************************/
  62 #define ANGLE_TEXT N_("DVD angle")
  63 #define ANGLE_LONGTEXT N_( \
  64     "Default DVD angle." )
  65
  66 static int  Open ( vlc_object_t * );
  67 static void Close( vlc_object_t * );
  68
  69 vlc_module_begin ()
  70     set_shortname( N_("DVD without menus") )
  71     set_description( N_("DVDRead Input (no menu support)") )
  72     set_category( CAT_INPUT )
  73     set_subcategory( SUBCAT_INPUT_ACCESS )
  74     add_integer( "dvdread-angle", 1, ANGLE_TEXT,
  75         ANGLE_LONGTEXT, false )
  76     add_obsolete_string( "dvdread-css-method" ) /* obsolete since 1.1.0 */
  77     set_capability( "access_demux", 0 )
  78     add_shortcut( "dvd", "dvdread", "dvdsimple" )
  79     set_callbacks( Open, Close )
  80 vlc_module_end ()
  81
  82 /* how many blocks DVDRead will read in each loop */
  83 #define DVD_BLOCK_READ_ONCE 4
  84
  85 /*****************************************************************************
  86  * Local prototypes
  87  *****************************************************************************/
  88
  89 struct demux_sys_t
  90 {
  91     /* DVDRead state */
  92     dvd_reader_t *p_dvdread;
  93     dvd_file_t   *p_title;
  94
  95     ifo_handle_t *p_vmg_file;
  96     ifo_handle_t *p_vts_file;
  97
  98     int i_title;
  99     int i_chapter, i_chapters;
 100     int i_angle, i_angles;
 101
 102     tt_srpt_t    *p_tt_srpt;
 103     pgc_t        *p_cur_pgc;
 104     dsi_t        dsi_pack;
 105     int          i_ttn;
 106
 107     int i_pack_len;
 108     int i_cur_block;
 109     int i_next_vobu;
 110
 111     int i_mux_rate;
 112
 113     /* Current title start/end blocks */
 114     int i_title_start_block;
 115     int i_title_end_block;
 116     int i_title_blocks;
 117     int i_title_offset;
 118     mtime_t i_title_cur_time;
 119
 120     int i_title_start_cell;
 121     int i_title_end_cell;
 122     int i_cur_cell;
 123     int i_next_cell;
 124     mtime_t i_cell_cur_time;
 125     mtime_t i_cell_duration;
 126
 127     /* Track */
 128     ps_track_t    tk[PS_TK_COUNT];
 129
 130     int           i_titles;
 131     input_title_t **titles;
 132
 133     /* Video */
 134     int i_sar_num;
 135     int i_sar_den;
 136
 137     /* SPU */
 138     uint32_t clut[16];
 139 };
 140
 141 static int Control   ( demux_t *, int, va_list );
 142 static int Demux     ( demux_t * );
 143 static int DemuxBlock( demux_t *, const uint8_t *, int );
 144
 145 static void DemuxTitles( demux_t *, int * );
 146 static void ESNew( demux_t *, int, int );
 147
 148 static int  DvdReadSetArea  ( demux_t *, int, int, int );
 149 static void DvdReadSeek     ( demux_t *, int );
 150 static void DvdReadHandleDSI( demux_t *, uint8_t * );
 151 static void DvdReadFindCell ( demux_t * );
 152
 153 /*****************************************************************************
 154  * Open:
 155  *****************************************************************************/
 156 static int Open( vlc_object_t *p_this )
 157 {
 158     demux_t      *p_demux = (demux_t*)p_this;
 159     demux_sys_t  *p_sys;
 160     char         *psz_file;
 161     ifo_handle_t *p_vmg_file;
 162
 163     if( !p_demux->psz_file || !*p_demux->psz_file )
 164     {
 165         /* Only when selected */
 166         if( !p_demux->psz_access || !*p_demux->psz_access )
 167             return VLC_EGENERIC;
 168
 169         psz_file = var_InheritString( p_this, "dvd" );
 170     }
 171     else
 172         psz_file = strdup( p_demux->psz_file );
 173
 174 #if defined( WIN32 ) || defined( __OS2__ )
 175     if( psz_file != NULL )
 176     {
 177         size_t flen = strlen( psz_file );
 178         if( flen > 0 && psz_file[flen - 1] == '\\' )
 179             psz_file[flen - 1] = '\0';
 180     }
 181     else
 182         psz_file = strdup("");
 183 #endif
 184     if( unlikely(psz_file == NULL) )
 185         return VLC_EGENERIC;
 186
 187     /* Open dvdread */
 188     const char *psz_path = ToLocale( psz_file );
 189     dvd_reader_t *p_dvdread = DVDOpen( psz_path );
 190
 191     LocaleFree( psz_path );
 192     if( p_dvdread == NULL )
 193     {
 194         msg_Err( p_demux, "DVDRead cannot open source: %s", psz_file );
 195         dialog_Fatal( p_demux, _("Playback failure"),
 196                       _("DVDRead could not open the disc \"%s\"."), psz_file );
 197         free( psz_file );
 198         return VLC_EGENERIC;
 199     }
 200     free( psz_file );
 201
 202     /* Ifo allocation & initialisation */
 203     if( !( p_vmg_file = ifoOpen( p_dvdread, 0 ) ) )
 204     {
 205         msg_Warn( p_demux, "cannot open VMG info" );
 206         return VLC_EGENERIC;
 207     }
 208     msg_Dbg( p_demux, "VMG opened" );
 209
 210     /* Fill p_demux field */
 211     DEMUX_INIT_COMMON(); p_sys = p_demux->p_sys;
 212
 213     ps_track_init( p_sys->tk );
 214     p_sys->i_sar_num = 0;
 215     p_sys->i_sar_den = 0;
 216     p_sys->i_title_cur_time = (mtime_t) 0;
 217     p_sys->i_cell_cur_time = (mtime_t) 0;
 218     p_sys->i_cell_duration = (mtime_t) 0;
 219
 220     p_sys->p_dvdread = p_dvdread;
 221     p_sys->p_vmg_file = p_vmg_file;
 222     p_sys->p_title = NULL;
 223     p_sys->p_vts_file = NULL;
 224
 225     p_sys->i_title = p_sys->i_chapter = -1;
 226     p_sys->i_mux_rate = 0;
 227
 228     p_sys->i_angle = var_CreateGetInteger( p_demux, "dvdread-angle" );
 229     if( p_sys->i_angle <= 0 ) p_sys->i_angle = 1;
 230
 231     DemuxTitles( p_demux, &p_sys->i_angle );
 232     if( DvdReadSetArea( p_demux, 0, 0, p_sys->i_angle ) != VLC_SUCCESS )
 233     {
 234         Close( p_this );
 235         msg_Err( p_demux, "DvdReadSetArea(0,0,%i) failed (can't decrypt DVD?)",
 236                  p_sys->i_angle );
 237         return VLC_EGENERIC;
 238     }
 239
 240     return VLC_SUCCESS;
 241 }
 242
 243 /*****************************************************************************
 244  * Close:
 245  *****************************************************************************/
 246 static void Close( vlc_object_t *p_this )
 247 {
 248     demux_t     *p_demux = (demux_t*)p_this;
 249     demux_sys_t *p_sys = p_demux->p_sys;
 250     int i;
 251
 252     for( i = 0; i < PS_TK_COUNT; i++ )
 253     {
 254         ps_track_t *tk = &p_sys->tk[i];
 255         if( tk->b_seen )
 256         {
 257             es_format_Clean( &tk->fmt );
 258             if( tk->es ) es_out_Del( p_demux->out, tk->es );
 259         }
 260     }
 261
 262     /* Free the array of titles */
 263     for( int i = 0; i < p_sys->i_titles; i++ )
 264         vlc_input_title_Delete( p_sys->titles[i] );
 265     TAB_CLEAN( p_sys->i_titles, p_sys->titles );
 266
 267     /* Close libdvdread */
 268     if( p_sys->p_title ) DVDCloseFile( p_sys->p_title );
 269     if( p_sys->p_vts_file ) ifoClose( p_sys->p_vts_file );
 270     if( p_sys->p_vmg_file ) ifoClose( p_sys->p_vmg_file );
 271     DVDClose( p_sys->p_dvdread );
 272
 273     free( p_sys );
 274 }
 275
 276 static int64_t dvdtime_to_time( dvd_time_t *dtime, uint8_t still_time )
 277 {
 278 /* Macro to convert Binary Coded Decimal to Decimal */
 279 #define BCD2D(__x__) (((__x__ & 0xf0) >> 4) * 10 + (__x__ & 0x0f))
 280
 281     double f_fps, f_ms;
 282     int64_t i_micro_second = 0;
 283
 284     if (still_time == 0 || still_time == 0xFF)
 285     {
 286         i_micro_second += (int64_t)(BCD2D(dtime->hour)) * 60 * 60 * 1000000;
 287         i_micro_second += (int64_t)(BCD2D(dtime->minute)) * 60 * 1000000;
 288         i_micro_second += (int64_t)(BCD2D(dtime->second)) * 1000000;
 289
 290         switch((dtime->frame_u & 0xc0) >> 6)
 291         {
 292         case 1:
 293             f_fps = 25.0;
 294             break;
 295         case 3:
 296             f_fps = 29.97;
 297             break;
 298         default:
 299             f_fps = 2500.0;
 300             break;
 301         }
 302         f_ms = BCD2D(dtime->frame_u&0x3f) * 1000.0 / f_fps;
 303         i_micro_second += (int64_t)(f_ms * 1000.0);
 304     }
 305     else
 306     {
 307         i_micro_second = still_time;
 308         i_micro_second = (int64_t)((double)i_micro_second * 1000000.0);
 309     }
 310
 311     return i_micro_second;
 312 }
 313
 314 /*****************************************************************************
 315  * Control:
 316  *****************************************************************************/
 317 static int Control( demux_t *p_demux, int i_query, va_list args )
 318 {
 319     demux_sys_t *p_sys = p_demux->p_sys;
 320     double f, *pf;
 321     bool *pb;
 322     int64_t *pi64;
 323     input_title_t ***ppp_title;
 324     int *pi_int;
 325     int i;
 326
 327     switch( i_query )
 328     {
 329         case DEMUX_GET_POSITION:
 330         {
 331             pf = (double*) va_arg( args, double* );
 332
 333             if( p_sys->i_title_blocks > 0 )
 334                 *pf = (double)p_sys->i_title_offset / p_sys->i_title_blocks;
 335             else
 336                 *pf = 0.0;
 337
 338             return VLC_SUCCESS;
 339         }
 340         case DEMUX_SET_POSITION:
 341         {
 342             f = (double)va_arg( args, double );
 343
 344             DvdReadSeek( p_demux, f * p_sys->i_title_blocks );
 345
 346             return VLC_SUCCESS;
 347         }
 348         case DEMUX_GET_TIME:
 349             pi64 = (int64_t*)va_arg( args, int64_t * );
 350             if( p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles )
 351             {
 352                 *pi64 = (int64_t) dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 ) /
 353                         p_sys->i_title_blocks * p_sys->i_title_offset;
 354                 return VLC_SUCCESS;
 355             }
 356             *pi64 = 0;
 357             return VLC_EGENERIC;
 358
 359         case DEMUX_GET_LENGTH:
 360             pi64 = (int64_t*)va_arg( args, int64_t * );
 361             if( p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles )
 362             {
 363                 *pi64 = (int64_t)dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 );
 364                 return VLC_SUCCESS;
 365             }
 366             *pi64 = 0;
 367             return VLC_EGENERIC;
 368
 369         /* Special for access_demux */
 370         case DEMUX_CAN_PAUSE:
 371         case DEMUX_CAN_SEEK:
 372         case DEMUX_CAN_CONTROL_PACE:
 373             /* TODO */
 374             pb = (bool*)va_arg( args, bool * );
 375             *pb = true;
 376             return VLC_SUCCESS;
 377
 378         case DEMUX_SET_PAUSE_STATE:
 379             return VLC_SUCCESS;
 380
 381         case DEMUX_GET_TITLE_INFO:
 382             ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
 383             pi_int    = (int*)va_arg( args, int* );
 384             *((int*)va_arg( args, int* )) = 1; /* Title offset */
 385             *((int*)va_arg( args, int* )) = 1; /* Chapter offset */
 386
 387             /* Duplicate title infos */
 388             *pi_int = p_sys->i_titles;
 389             *ppp_title = malloc( sizeof(input_title_t **) * p_sys->i_titles );
 390             for( i = 0; i < p_sys->i_titles; i++ )
 391             {
 392                 (*ppp_title)[i] = vlc_input_title_Duplicate(p_sys->titles[i]);
 393             }
 394             return VLC_SUCCESS;
 395
 396         case DEMUX_SET_TITLE:
 397             i = (int)va_arg( args, int );
 398             if( DvdReadSetArea( p_demux, i, 0, -1 ) != VLC_SUCCESS )
 399             {
 400                 msg_Warn( p_demux, "cannot set title/chapter" );
 401                 return VLC_EGENERIC;
 402             }
 403             p_demux->info.i_update |=
 404                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
 405             p_demux->info.i_title = i;
 406             p_demux->info.i_seekpoint = 0;
 407             return VLC_SUCCESS;
 408
 409         case DEMUX_SET_SEEKPOINT:
 410             i = (int)va_arg( args, int );
 411             if( DvdReadSetArea( p_demux, -1, i, -1 ) != VLC_SUCCESS )
 412             {
 413                 msg_Warn( p_demux, "cannot set title/chapter" );
 414                 return VLC_EGENERIC;
 415             }
 416             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
 417             p_demux->info.i_seekpoint = i;
 418             return VLC_SUCCESS;
 419
 420         case DEMUX_GET_PTS_DELAY:
 421             pi64 = (int64_t*)va_arg( args, int64_t * );
 422             *pi64 =
 423                 INT64_C(1000) * var_InheritInteger( p_demux, "disc-caching" );
 424             return VLC_SUCCESS;
 425
 426         /* TODO implement others */
 427         default:
 428             return VLC_EGENERIC;
 429     }
 430 }
 431
 432 /*****************************************************************************
 433  * Demux:
 434  *****************************************************************************/
 435 static int Demux( demux_t *p_demux )
 436 {
 437     demux_sys_t *p_sys = p_demux->p_sys;
 438
 439     uint8_t p_buffer[DVD_VIDEO_LB_LEN * DVD_BLOCK_READ_ONCE];
 440     int i_blocks_once, i_read;
 441     int i;
 442
 443     /*
 444      * Playback by cell in this pgc, starting at the cell for our chapter.
 445      */
 446
 447     /*
 448      * Check end of pack, and select the following one
 449      */
 450     if( !p_sys->i_pack_len )
 451     {
 452         /* Read NAV packet */
 453         if( DVDReadBlocks( p_sys->p_title, p_sys->i_next_vobu,
 454                            1, p_buffer ) != 1 )
 455         {
 456             msg_Err( p_demux, "read failed for block %d", p_sys->i_next_vobu );
 457             dialog_Fatal( p_demux, _("Playback failure"),
 458                           _("DVDRead could not read block %d."),
 459                           p_sys->i_next_vobu );
 460             return -1;
 461         }
 462
 463         /* Basic check to be sure we don't have a empty title
 464          * go to next title if so */
 465         //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
 466
 467         /* Parse the contained dsi packet */
 468         DvdReadHandleDSI( p_demux, p_buffer );
 469
 470         /* End of title */
 471         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
 472         {
 473             if( p_sys->i_title + 1 >= p_sys->i_titles )
 474             {
 475                 return 0; /* EOF */
 476             }
 477
 478             DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
 479         }
 480
 481         if( p_sys->i_pack_len >= 1024 )
 482         {
 483             msg_Err( p_demux, "i_pack_len >= 1024 (%i). "
 484                      "This shouldn't happen!", p_sys->i_pack_len );
 485             return 0; /* EOF */
 486         }
 487
 488         /* FIXME: Ugly kludge: we send the pack block to the input for it
 489          * sometimes has a zero scr and restart the sync */
 490         p_sys->i_cur_block++;
 491         p_sys->i_title_offset++;
 492
 493         DemuxBlock( p_demux, p_buffer, DVD_VIDEO_LB_LEN );
 494     }
 495
 496     if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
 497     {
 498         if( p_sys->i_title + 1 >= p_sys->i_titles )
 499         {
 500             return 0; /* EOF */
 501         }
 502
 503         DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
 504     }
 505
 506     /*
 507      * Read actual data
 508      */
 509     i_blocks_once = __MIN( p_sys->i_pack_len, DVD_BLOCK_READ_ONCE );
 510     p_sys->i_pack_len -= i_blocks_once;
 511
 512     /* Reads from DVD */
 513     i_read = DVDReadBlocks( p_sys->p_title, p_sys->i_cur_block,
 514                             i_blocks_once, p_buffer );
 515     if( i_read != i_blocks_once )
 516     {
 517         msg_Err( p_demux, "read failed for %d/%d blocks at 0x%02x",
 518                  i_read, i_blocks_once, p_sys->i_cur_block );
 519         dialog_Fatal( p_demux, _("Playback failure"),
 520                         _("DVDRead could not read %d/%d blocks at 0x%02x."),
 521                         i_read, i_blocks_once, p_sys->i_cur_block );
 522         return -1;
 523     }
 524
 525     p_sys->i_cur_block += i_read;
 526     p_sys->i_title_offset += i_read;
 527
 528 #if 0
 529     msg_Dbg( p_demux, "i_blocks: %d len: %d current: 0x%02x",
 530              i_read, p_sys->i_pack_len, p_sys->i_cur_block );
 531 #endif
 532
 533     for( i = 0; i < i_read; i++ )
 534     {
 535         DemuxBlock( p_demux, p_buffer + i * DVD_VIDEO_LB_LEN,
 536                     DVD_VIDEO_LB_LEN );
 537     }
 538
 539 #undef p_pgc
 540
 541     return 1;
 542 }
 543
 544 /*****************************************************************************
 545  * DemuxBlock: demux a given block
 546  *****************************************************************************/
 547 static int DemuxBlock( demux_t *p_demux, const uint8_t *p, int len )
 548 {
 549     demux_sys_t *p_sys = p_demux->p_sys;
 550
 551     while( len > 0 )
 552     {
 553         int i_size = ps_pkt_size( p, len );
 554         if( i_size <= 0 || i_size > len )
 555         {
 556             break;
 557         }
 558
 559         /* Create a block */
 560         block_t *p_pkt = block_New( p_demux, i_size );
 561         memcpy( p_pkt->p_buffer, p, i_size);
 562
 563         /* Parse it and send it */
 564         switch( 0x100 | p[3] )
 565         {
 566         case 0x1b9:
 567         case 0x1bb:
 568         case 0x1bc:
 569
 570 #ifdef DVDREAD_DEBUG
 571             if( p[3] == 0xbc )
 572             {
 573                 msg_Warn( p_demux, "received a PSM packet" );
 574             }
 575             else if( p[3] == 0xbb )
 576             {
 577                 msg_Warn( p_demux, "received a SYSTEM packet" );
 578             }
 579 #endif
 580             block_Release( p_pkt );
 581             break;
 582
 583         case 0x1ba:
 584         {
 585             int64_t i_scr;
 586             int i_mux_rate;
 587             if( !ps_pkt_parse_pack( p_pkt, &i_scr, &i_mux_rate ) )
 588             {
 589                 es_out_Control( p_demux->out, ES_OUT_SET_PCR, i_scr );
 590                 if( i_mux_rate > 0 ) p_sys->i_mux_rate = i_mux_rate;
 591             }
 592             block_Release( p_pkt );
 593             break;
 594         }
 595         default:
 596         {
 597             int i_id = ps_pkt_id( p_pkt );
 598             if( i_id >= 0xc0 )
 599             {
 600                 ps_track_t *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
 601
 602                 if( !tk->b_seen )
 603                 {
 604                     ESNew( p_demux, i_id, 0 );
 605                 }
 606                 if( tk->b_seen && tk->es &&
 607                     !ps_pkt_parse_pes( p_pkt, tk->i_skip ) )
 608                 {
 609                     es_out_Send( p_demux->out, tk->es, p_pkt );
 610                 }
 611                 else
 612                 {
 613                     block_Release( p_pkt );
 614                 }
 615             }
 616             else
 617             {
 618                 block_Release( p_pkt );
 619             }
 620             break;
 621         }
 622         }
 623
 624         p += i_size;
 625         len -= i_size;
 626     }
 627
 628     return VLC_SUCCESS;
 629 }
 630
 631 /*****************************************************************************
 632  * ESNew: register a new elementary stream
 633  *****************************************************************************/
 634 static void ESNew( demux_t *p_demux, int i_id, int i_lang )
 635 {
 636     demux_sys_t *p_sys = p_demux->p_sys;
 637     ps_track_t  *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
 638     char psz_language[3];
 639
 640     if( tk->b_seen ) return;
 641
 642     if( ps_track_fill( tk, 0, i_id ) )
 643     {
 644         msg_Warn( p_demux, "unknown codec for id=0x%x", i_id );
 645         return;
 646     }
 647
 648     psz_language[0] = psz_language[1] = psz_language[2] = 0;
 649     if( i_lang && i_lang != 0xffff )
 650     {
 651         psz_language[0] = (i_lang >> 8)&0xff;
 652         psz_language[1] = (i_lang     )&0xff;
 653     }
 654
 655     /* Add a new ES */
 656     if( tk->fmt.i_cat == VIDEO_ES )
 657     {
 658         tk->fmt.video.i_sar_num = p_sys->i_sar_num;
 659         tk->fmt.video.i_sar_den = p_sys->i_sar_den;
 660     }
 661     else if( tk->fmt.i_cat == AUDIO_ES )
 662     {
 663         int i_audio = -1;
 664         /* find the audio number PLEASE find another way */
 665         if( (i_id&0xbdf8) == 0xbd88 )       /* dts */
 666         {
 667             i_audio = i_id&0x07;
 668         }
 669         else if( (i_id&0xbdf0) == 0xbd80 )  /* a52 */
 670         {
 671             i_audio = i_id&0xf;
 672         }
 673         else if( (i_id&0xbdf0) == 0xbda0 )  /* lpcm */
 674         {
 675             i_audio = i_id&0x1f;
 676         }
 677         else if( ( i_id&0xe0 ) == 0xc0 )    /* mpga */
 678         {
 679             i_audio = i_id&0x1f;
 680         }
 681
 682         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
 683     }
 684     else if( tk->fmt.i_cat == SPU_ES )
 685     {
 686         /* Palette */
 687         tk->fmt.subs.spu.palette[0] = 0xBeef;
 688         memcpy( &tk->fmt.subs.spu.palette[1], p_sys->clut,
 689                 16 * sizeof( uint32_t ) );
 690
 691         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
 692     }
 693
 694     tk->es = es_out_Add( p_demux->out, &tk->fmt );
 695     tk->b_seen = true;
 696 }
 697
 698 /*****************************************************************************
 699  * DvdReadSetArea: initialize input data for title x, chapter y.
 700  * It should be called for each user navigation request.
 701  *****************************************************************************
 702  * Take care that i_title and i_chapter start from 0.
 703  *****************************************************************************/
 704 static int DvdReadSetArea( demux_t *p_demux, int i_title, int i_chapter,
 705                            int i_angle )
 706 {
 707     VLC_UNUSED( i_angle );
 708
 709     demux_sys_t *p_sys = p_demux->p_sys;
 710     int pgc_id = 0, pgn = 0;
 711     int i;
 712
 713 #define p_pgc p_sys->p_cur_pgc
 714 #define p_vmg p_sys->p_vmg_file
 715 #define p_vts p_sys->p_vts_file
 716
 717     if( i_title >= 0 && i_title < p_sys->i_titles &&
 718         i_title != p_sys->i_title )
 719     {
 720         int i_start_cell, i_end_cell;
 721
 722         if( p_sys->p_title != NULL ) DVDCloseFile( p_sys->p_title );
 723         if( p_vts != NULL ) ifoClose( p_vts );
 724         p_sys->i_title = i_title;
 725
 726         /*
 727          *  We have to load all title information
 728          */
 729         msg_Dbg( p_demux, "open VTS %d, for title %d",
 730                  p_vmg->tt_srpt->title[i_title].title_set_nr, i_title + 1 );
 731
 732         /* Ifo vts */
 733         if( !( p_vts = ifoOpen( p_sys->p_dvdread,
 734                p_vmg->tt_srpt->title[i_title].title_set_nr ) ) )
 735         {
 736             msg_Err( p_demux, "fatal error in vts ifo" );
 737             return VLC_EGENERIC;
 738         }
 739
 740         /* Title position inside the selected vts */
 741         p_sys->i_ttn = p_vmg->tt_srpt->title[i_title].vts_ttn;
 742
 743         /* Find title start/end */
 744         pgc_id = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgcn;
 745         pgn = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgn;
 746         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 747
 748         p_sys->i_title_start_cell =
 749             i_start_cell = p_pgc->program_map[pgn - 1] - 1;
 750         p_sys->i_title_start_block =
 751             p_pgc->cell_playback[i_start_cell].first_sector;
 752
 753         p_sys->i_title_end_cell =
 754             i_end_cell = p_pgc->nr_of_cells - 1;
 755         p_sys->i_title_end_block =
 756             p_pgc->cell_playback[i_end_cell].last_sector;
 757
 758         p_sys->i_title_offset = 0;
 759
 760         p_sys->i_title_blocks = 0;
 761         for( i = i_start_cell; i <= i_end_cell; i++ )
 762         {
 763             p_sys->i_title_blocks += p_pgc->cell_playback[i].last_sector -
 764                 p_pgc->cell_playback[i].first_sector + 1;
 765         }
 766
 767         msg_Dbg( p_demux, "title %d vts_title %d pgc %d pgn %d "
 768                  "start %d end %d blocks: %d",
 769                  i_title + 1, p_sys->i_ttn, pgc_id, pgn,
 770                  p_sys->i_title_start_block, p_sys->i_title_end_block,
 771                  p_sys->i_title_blocks );
 772
 773         /*
 774          * Set properties for current chapter
 775          */
 776         p_sys->i_chapter = 0;
 777         p_sys->i_chapters =
 778             p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].nr_of_ptts;
 779
 780         pgc_id = p_vts->vts_ptt_srpt->title[
 781                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgcn;
 782         pgn = p_vts->vts_ptt_srpt->title[
 783                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgn;
 784
 785         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 786         p_sys->i_pack_len = 0;
 787         p_sys->i_next_cell =
 788             p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
 789         DvdReadFindCell( p_demux );
 790
 791         p_sys->i_next_vobu = p_sys->i_cur_block =
 792             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
 793
 794         /*
 795          * Angle management
 796          */
 797         p_sys->i_angles = p_vmg->tt_srpt->title[i_title].nr_of_angles;
 798         if( p_sys->i_angle > p_sys->i_angles ) p_sys->i_angle = 1;
 799
 800         /*
 801          * We've got enough info, time to open the title set data.
 802          */
 803         if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
 804             p_vmg->tt_srpt->title[i_title].title_set_nr,
 805             DVD_READ_TITLE_VOBS ) ) )
 806         {
 807             msg_Err( p_demux, "cannot open title (VTS_%02d_1.VOB)",
 808                      p_vmg->tt_srpt->title[i_title].title_set_nr );
 809             return VLC_EGENERIC;
 810         }
 811
 812         //IfoPrintTitle( p_demux );
 813
 814         /*
 815          * Destroy obsolete ES by reinitializing program 0
 816          * and find all ES in title with ifo data
 817          */
 818         es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 819
 820         for( i = 0; i < PS_TK_COUNT; i++ )
 821         {
 822             ps_track_t *tk = &p_sys->tk[i];
 823             if( tk->b_seen )
 824             {
 825                 es_format_Clean( &tk->fmt );
 826                 if( tk->es ) es_out_Del( p_demux->out, tk->es );
 827             }
 828             tk->b_seen = false;
 829         }
 830
 831         if( p_demux->info.i_title != i_title )
 832         {
 833             p_demux->info.i_update |=
 834                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
 835             p_demux->info.i_title = i_title;
 836             p_demux->info.i_seekpoint = 0;
 837         }
 838
 839         /* TODO: re-add angles */
 840
 841
 842         ESNew( p_demux, 0xe0, 0 ); /* Video, FIXME ? */
 843         const video_attr_t *p_attr = &p_vts->vtsi_mat->vts_video_attr;
 844         int i_video_height = p_attr->video_format != 0 ? 576 : 480;
 845         int i_video_width;
 846         switch( p_attr->picture_size )
 847         {
 848         case 0:
 849             i_video_width = 720;
 850             break;
 851         case 1:
 852             i_video_width = 704;
 853             break;
 854         case 2:
 855             i_video_width = 352;
 856             break;
 857         default:
 858         case 3:
 859             i_video_width = 352;
 860             i_video_height /= 2;
 861             break;
 862         }
 863         switch( p_attr->display_aspect_ratio )
 864         {
 865         case 0:
 866             p_sys->i_sar_num = 4 * i_video_height;
 867             p_sys->i_sar_den = 3 * i_video_width;
 868             break;
 869         case 3:
 870             p_sys->i_sar_num = 16 * i_video_height;
 871             p_sys->i_sar_den =  9 * i_video_width;
 872             break;
 873         default:
 874             p_sys->i_sar_num = 0;
 875             p_sys->i_sar_den = 0;
 876             break;
 877         }
 878
 879 #define audio_control \
 880     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 881
 882         /* Audio ES, in the order they appear in the .ifo */
 883         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams; i++ )
 884         {
 885             int i_position = 0;
 886             uint16_t i_id;
 887
 888             //IfoPrintAudio( p_demux, i );
 889
 890             /* Audio channel is active if first byte is 0x80 */
 891             if( audio_control & 0x8000 )
 892             {
 893                 i_position = ( audio_control & 0x7F00 ) >> 8;
 894
 895                 msg_Dbg( p_demux, "audio position  %d", i_position );
 896                 switch( p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format )
 897                 {
 898                 case 0x00: /* A52 */
 899                     i_id = (0x80 + i_position) | 0xbd00;
 900                     break;
 901                 case 0x02:
 902                 case 0x03: /* MPEG audio */
 903                     i_id = 0xc000 + i_position;
 904                     break;
 905                 case 0x04: /* LPCM */
 906                     i_id = (0xa0 + i_position) | 0xbd00;
 907                     break;
 908                 case 0x06: /* DTS */
 909                     i_id = (0x88 + i_position) | 0xbd00;
 910                     break;
 911                 default:
 912                     i_id = 0;
 913                     msg_Err( p_demux, "unknown audio type %.2x",
 914                         p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format );
 915                 }
 916
 917                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
 918                        vts_audio_attr[i - 1].lang_code );
 919             }
 920         }
 921 #undef audio_control
 922
 923 #define spu_palette \
 924     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->palette
 925
 926         memcpy( p_sys->clut, spu_palette, 16 * sizeof( uint32_t ) );
 927
 928 #define spu_control \
 929     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 930
 931         /* Sub Picture ES */
 932         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 933         {
 934             int i_position = 0;
 935             uint16_t i_id;
 936
 937             //IfoPrintSpu( p_sys, i );
 938             msg_Dbg( p_demux, "spu %d 0x%02x", i, spu_control );
 939
 940             if( spu_control & 0x80000000 )
 941             {
 942                 /*  there are several streams for one spu */
 943                 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 944                 {
 945                     /* 16:9 */
 946                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 947                     {
 948                     case 1: /* letterbox */
 949                         i_position = spu_control & 0xff;
 950                         break;
 951                     case 2: /* pan&scan */
 952                         i_position = ( spu_control >> 8 ) & 0xff;
 953                         break;
 954                     default: /* widescreen */
 955                         i_position = ( spu_control >> 16 ) & 0xff;
 956                         break;
 957                     }
 958                 }
 959                 else
 960                 {
 961                     /* 4:3 */
 962                     i_position = ( spu_control >> 24 ) & 0x7F;
 963                 }
 964
 965                 i_id = (0x20 + i_position) | 0xbd00;
 966
 967                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
 968                        vts_subp_attr[i - 1].lang_code );
 969             }
 970         }
 971 #undef spu_control
 972
 973     }
 974     else if( i_title != -1 && i_title != p_sys->i_title )
 975
 976     {
 977         return VLC_EGENERIC; /* Couldn't set title */
 978     }
 979
 980     /*
 981      * Chapter selection
 982      */
 983
 984     if( i_chapter >= 0 && i_chapter < p_sys->i_chapters )
 985     {
 986         pgc_id = p_vts->vts_ptt_srpt->title[
 987                      p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
 988         pgn = p_vts->vts_ptt_srpt->title[
 989                   p_sys->i_ttn - 1].ptt[i_chapter].pgn;
 990
 991         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 992
 993         p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
 994         p_sys->i_chapter = i_chapter;
 995         DvdReadFindCell( p_demux );
 996
 997         p_sys->i_title_offset = 0;
 998         for( i = p_sys->i_title_start_cell; i < p_sys->i_cur_cell; i++ )
 999         {
1000             p_sys->i_title_offset += p_pgc->cell_playback[i].last_sector -
1001                 p_pgc->cell_playback[i].first_sector + 1;
1002         }
1003
1004         p_sys->i_pack_len = 0;
1005         p_sys->i_next_vobu = p_sys->i_cur_block =
1006             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1007
1008         if( p_demux->info.i_seekpoint != i_chapter )
1009         {
1010             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1011             p_demux->info.i_seekpoint = i_chapter;
1012         }
1013     }
1014     else if( i_chapter != -1 )
1015
1016     {
1017         return VLC_EGENERIC; /* Couldn't set chapter */
1018     }
1019
1020 #undef p_pgc
1021 #undef p_vts
1022 #undef p_vmg
1023
1024     return VLC_SUCCESS;
1025 }
1026
1027 /*****************************************************************************
1028  * DvdReadSeek : Goes to a given position on the stream.
1029  *****************************************************************************
1030  * This one is used by the input and translate chronological position from
1031  * input to logical position on the device.
1032  *****************************************************************************/
1033 static void DvdReadSeek( demux_t *p_demux, int i_block_offset )
1034 {
1035     demux_sys_t *p_sys = p_demux->p_sys;
1036     int i_chapter = 0;
1037     int i_cell = 0;
1038     int i_vobu = 0;
1039     int i_sub_cell = 0;
1040     int i_block;
1041
1042 #define p_pgc p_sys->p_cur_pgc
1043 #define p_vts p_sys->p_vts_file
1044
1045     /* Find cell */
1046     i_block = i_block_offset;
1047     for( i_cell = p_sys->i_title_start_cell;
1048          i_cell <= p_sys->i_title_end_cell; i_cell++ )
1049     {
1050         if( i_block < (int)p_pgc->cell_playback[i_cell].last_sector -
1051             (int)p_pgc->cell_playback[i_cell].first_sector + 1 ) break;
1052
1053         i_block -= (p_pgc->cell_playback[i_cell].last_sector -
1054             p_pgc->cell_playback[i_cell].first_sector + 1);
1055     }
1056     if( i_cell > p_sys->i_title_end_cell )
1057     {
1058         msg_Err( p_demux, "couldn't find cell for block %i", i_block_offset );
1059         return;
1060     }
1061     i_block += p_pgc->cell_playback[i_cell].first_sector;
1062     p_sys->i_title_offset = i_block_offset;
1063
1064     /* Find chapter */
1065     for( i_chapter = 0; i_chapter < p_sys->i_chapters; i_chapter++ )
1066     {
1067         int pgc_id, pgn, i_tmp;
1068
1069         pgc_id = p_vts->vts_ptt_srpt->title[
1070                     p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
1071         pgn = p_vts->vts_ptt_srpt->title[
1072                     p_sys->i_ttn - 1].ptt[i_chapter].pgn;
1073
1074         i_tmp = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc->program_map[pgn-1];
1075
1076         if( i_tmp > i_cell ) break;
1077     }
1078
1079     if( i_chapter < p_sys->i_chapters &&
1080         p_demux->info.i_seekpoint != i_chapter )
1081     {
1082         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1083         p_demux->info.i_seekpoint = i_chapter;
1084     }
1085
1086     /* Find vobu */
1087     while( (int)p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu] <= i_block )
1088     {
1089         i_vobu++;
1090     }
1091
1092     /* Find sub_cell */
1093     while( p_vts->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1094            p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1095     {
1096         i_sub_cell++;
1097     }
1098
1099 #if 1
1100     msg_Dbg( p_demux, "cell %d i_sub_cell %d chapter %d vobu %d "
1101              "cell_sector %d vobu_sector %d sub_cell_sector %d",
1102              i_cell, i_sub_cell, i_chapter, i_vobu,
1103              p_sys->p_cur_pgc->cell_playback[i_cell].first_sector,
1104              p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu],
1105              p_vts->vts_c_adt->cell_adr_table[i_sub_cell - 1].start_sector);
1106 #endif
1107
1108     p_sys->i_cur_block = i_block;
1109     p_sys->i_next_vobu = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu];
1110     p_sys->i_pack_len = p_sys->i_next_vobu - i_block;
1111     p_sys->i_cur_cell = i_cell;
1112     p_sys->i_chapter = i_chapter;
1113     DvdReadFindCell( p_demux );
1114
1115 #undef p_vts
1116 #undef p_pgc
1117
1118     return;
1119 }
1120
1121 /*****************************************************************************
1122  * DvdReadHandleDSI
1123  *****************************************************************************/
1124 static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
1125 {
1126     demux_sys_t *p_sys = p_demux->p_sys;
1127
1128     navRead_DSI( &p_sys->dsi_pack, &p_data[DSI_START_BYTE] );
1129
1130     /*
1131      * Determine where we go next.  These values are the ones we mostly
1132      * care about.
1133      */
1134     p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
1135     p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
1136
1137     /*
1138      * Store the timecodes so we can get the current time
1139      */
1140     p_sys->i_title_cur_time = (mtime_t) (p_sys->dsi_pack.dsi_gi.nv_pck_scr / 90 * 1000);
1141     p_sys->i_cell_cur_time = (mtime_t) dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 );
1142
1143     /*
1144      * If we're not at the end of this cell, we can determine the next
1145      * VOBU to display using the VOBU_SRI information section of the
1146      * DSI.  Using this value correctly follows the current angle,
1147      * avoiding the doubled scenes in The Matrix, and makes our life
1148      * really happy.
1149      */
1150
1151     p_sys->i_next_vobu = p_sys->i_cur_block +
1152         ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1153
1154     if( p_sys->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL
1155         && p_sys->i_angle > 1 )
1156     {
1157         switch( ( p_sys->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1158         {
1159         case 0x4:
1160             /* Interleaved unit with no angle */
1161             if( p_sys->dsi_pack.sml_pbi.ilvu_sa != 0 )
1162             {
1163                 p_sys->i_next_vobu = p_sys->i_cur_block +
1164                     p_sys->dsi_pack.sml_pbi.ilvu_sa;
1165                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1166             }
1167             else
1168             {
1169                 p_sys->i_next_vobu = p_sys->i_cur_block +
1170                     p_sys->dsi_pack.dsi_gi.vobu_ea + 1;
1171             }
1172             break;
1173         case 0x5:
1174             /* vobu is end of ilvu */
1175             if( p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address )
1176             {
1177                 p_sys->i_next_vobu = p_sys->i_cur_block +
1178                     p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address;
1179                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1180
1181                 break;
1182             }
1183         case 0x6:
1184             /* vobu is beginning of ilvu */
1185         case 0x9:
1186             /* next scr is 0 */
1187         case 0xa:
1188             /* entering interleaved section */
1189         case 0x8:
1190             /* non interleaved cells in interleaved section */
1191         default:
1192             p_sys->i_next_vobu = p_sys->i_cur_block +
1193                 ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1194             break;
1195         }
1196     }
1197     else if( p_sys->dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
1198     {
1199         p_sys->i_cur_cell = p_sys->i_next_cell;
1200
1201         /* End of title */
1202         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells ) return;
1203
1204         DvdReadFindCell( p_demux );
1205
1206         p_sys->i_next_vobu =
1207             p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1208
1209         p_sys->i_cell_duration = (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 );
1210     }
1211
1212
1213 #if 0
1214     msg_Dbg( p_demux, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d c_time %lld",
1215              p_sys->dsi_pack.dsi_gi.nv_pck_scr,
1216              p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
1217              p_sys->dsi_pack.dsi_gi.vobu_ea,
1218              p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
1219              p_sys->dsi_pack.dsi_gi.vobu_c_idn,
1220              dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 ) );
1221
1222     msg_Dbg( p_demux, "cell duration: %lld",
1223              (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 ) );
1224
1225     msg_Dbg( p_demux, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1226              p_sys->dsi_pack.sml_pbi.category,
1227              p_sys->dsi_pack.sml_pbi.ilvu_ea,
1228              p_sys->dsi_pack.sml_pbi.ilvu_sa,
1229              p_sys->dsi_pack.sml_pbi.size );
1230
1231     msg_Dbg( p_demux, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1232              p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1233              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
1234              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);
1235 #endif
1236 }
1237
1238 /*****************************************************************************
1239  * DvdReadFindCell
1240  *****************************************************************************/
1241 static void DvdReadFindCell( demux_t *p_demux )
1242 {
1243     demux_sys_t *p_sys = p_demux->p_sys;
1244
1245     pgc_t *p_pgc;
1246     int   pgc_id, pgn;
1247     int   i = 0;
1248
1249 #define cell p_sys->p_cur_pgc->cell_playback
1250
1251     if( cell[p_sys->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1252     {
1253         p_sys->i_cur_cell += p_sys->i_angle - 1;
1254
1255         while( cell[p_sys->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1256         {
1257             i++;
1258         }
1259         p_sys->i_next_cell = p_sys->i_cur_cell + i + 1;
1260     }
1261     else
1262     {
1263         p_sys->i_next_cell = p_sys->i_cur_cell + 1;
1264     }
1265
1266 #undef cell
1267
1268     if( p_sys->i_chapter + 1 >= p_sys->i_chapters ) return;
1269
1270     pgc_id = p_sys->p_vts_file->vts_ptt_srpt->title[
1271                 p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgcn;
1272     pgn = p_sys->p_vts_file->vts_ptt_srpt->title[
1273               p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgn;
1274     p_pgc = p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
1275
1276     if( p_sys->i_cur_cell >= p_pgc->program_map[pgn - 1] - 1 )
1277     {
1278         p_sys->i_chapter++;
1279
1280         if( p_sys->i_chapter < p_sys->i_chapters &&
1281             p_demux->info.i_seekpoint != p_sys->i_chapter )
1282         {
1283             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1284             p_demux->info.i_seekpoint = p_sys->i_chapter;
1285         }
1286     }
1287 }
1288
1289 /*****************************************************************************
1290  * DemuxTitles: get the titles/chapters structure
1291  *****************************************************************************/
1292 static void DemuxTitles( demux_t *p_demux, int *pi_angle )
1293 {
1294     VLC_UNUSED( pi_angle );
1295
1296     demux_sys_t *p_sys = p_demux->p_sys;
1297     input_title_t *t;
1298     seekpoint_t *s;
1299
1300     /* Find out number of titles/chapters */
1301 #define tt_srpt p_sys->p_vmg_file->tt_srpt
1302
1303     int32_t i_titles = tt_srpt->nr_of_srpts;
1304     msg_Dbg( p_demux, "number of titles: %d", i_titles );
1305
1306     for( int i = 0; i < i_titles; i++ )
1307     {
1308         int32_t i_chapters = 0;
1309         int j;
1310
1311         i_chapters = tt_srpt->title[i].nr_of_ptts;
1312         msg_Dbg( p_demux, "title %d has %d chapters", i, i_chapters );
1313
1314         t = vlc_input_title_New();
1315
1316         for( j = 0; j < __MAX( i_chapters, 1 ); j++ )
1317         {
1318             s = vlc_seekpoint_New();
1319             TAB_APPEND( t->i_seekpoint, t->seekpoint, s );
1320         }
1321
1322         TAB_APPEND( p_sys->i_titles, p_sys->titles, t );
1323     }
1324
1325 #undef tt_srpt
1326 }