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 #if 0
 664         int i_audio = -1;
 665         /* find the audio number PLEASE find another way */
 666         if( (i_id&0xbdf8) == 0xbd88 )       /* dts */
 667         {
 668             i_audio = i_id&0x07;
 669         }
 670         else if( (i_id&0xbdf0) == 0xbd80 )  /* a52 */
 671         {
 672             i_audio = i_id&0xf;
 673         }
 674         else if( (i_id&0xbdf0) == 0xbda0 )  /* lpcm */
 675         {
 676             i_audio = i_id&0x1f;
 677         }
 678         else if( ( i_id&0xe0 ) == 0xc0 )    /* mpga */
 679         {
 680             i_audio = i_id&0x1f;
 681         }
 682 #endif
 683
 684         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
 685     }
 686     else if( tk->fmt.i_cat == SPU_ES )
 687     {
 688         /* Palette */
 689         tk->fmt.subs.spu.palette[0] = 0xBeef;
 690         memcpy( &tk->fmt.subs.spu.palette[1], p_sys->clut,
 691                 16 * sizeof( uint32_t ) );
 692
 693         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
 694     }
 695
 696     tk->es = es_out_Add( p_demux->out, &tk->fmt );
 697     tk->b_seen = true;
 698 }
 699
 700 /*****************************************************************************
 701  * DvdReadSetArea: initialize input data for title x, chapter y.
 702  * It should be called for each user navigation request.
 703  *****************************************************************************
 704  * Take care that i_title and i_chapter start from 0.
 705  *****************************************************************************/
 706 static int DvdReadSetArea( demux_t *p_demux, int i_title, int i_chapter,
 707                            int i_angle )
 708 {
 709     VLC_UNUSED( i_angle );
 710
 711     demux_sys_t *p_sys = p_demux->p_sys;
 712     int pgc_id = 0, pgn = 0;
 713     int i;
 714
 715 #define p_pgc p_sys->p_cur_pgc
 716 #define p_vmg p_sys->p_vmg_file
 717 #define p_vts p_sys->p_vts_file
 718
 719     if( i_title >= 0 && i_title < p_sys->i_titles &&
 720         i_title != p_sys->i_title )
 721     {
 722         int i_start_cell, i_end_cell;
 723
 724         if( p_sys->p_title != NULL ) DVDCloseFile( p_sys->p_title );
 725         if( p_vts != NULL ) ifoClose( p_vts );
 726         p_sys->i_title = i_title;
 727
 728         /*
 729          *  We have to load all title information
 730          */
 731         msg_Dbg( p_demux, "open VTS %d, for title %d",
 732                  p_vmg->tt_srpt->title[i_title].title_set_nr, i_title + 1 );
 733
 734         /* Ifo vts */
 735         if( !( p_vts = ifoOpen( p_sys->p_dvdread,
 736                p_vmg->tt_srpt->title[i_title].title_set_nr ) ) )
 737         {
 738             msg_Err( p_demux, "fatal error in vts ifo" );
 739             return VLC_EGENERIC;
 740         }
 741
 742         /* Title position inside the selected vts */
 743         p_sys->i_ttn = p_vmg->tt_srpt->title[i_title].vts_ttn;
 744
 745         /* Find title start/end */
 746         pgc_id = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgcn;
 747         pgn = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgn;
 748         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 749
 750         p_sys->i_title_start_cell =
 751             i_start_cell = p_pgc->program_map[pgn - 1] - 1;
 752         p_sys->i_title_start_block =
 753             p_pgc->cell_playback[i_start_cell].first_sector;
 754
 755         p_sys->i_title_end_cell =
 756             i_end_cell = p_pgc->nr_of_cells - 1;
 757         p_sys->i_title_end_block =
 758             p_pgc->cell_playback[i_end_cell].last_sector;
 759
 760         p_sys->i_title_offset = 0;
 761
 762         p_sys->i_title_blocks = 0;
 763         for( i = i_start_cell; i <= i_end_cell; i++ )
 764         {
 765             p_sys->i_title_blocks += p_pgc->cell_playback[i].last_sector -
 766                 p_pgc->cell_playback[i].first_sector + 1;
 767         }
 768
 769         msg_Dbg( p_demux, "title %d vts_title %d pgc %d pgn %d "
 770                  "start %d end %d blocks: %d",
 771                  i_title + 1, p_sys->i_ttn, pgc_id, pgn,
 772                  p_sys->i_title_start_block, p_sys->i_title_end_block,
 773                  p_sys->i_title_blocks );
 774
 775         /*
 776          * Set properties for current chapter
 777          */
 778         p_sys->i_chapter = 0;
 779         p_sys->i_chapters =
 780             p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].nr_of_ptts;
 781
 782         pgc_id = p_vts->vts_ptt_srpt->title[
 783                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgcn;
 784         pgn = p_vts->vts_ptt_srpt->title[
 785                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgn;
 786
 787         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 788         p_sys->i_pack_len = 0;
 789         p_sys->i_next_cell =
 790             p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
 791         DvdReadFindCell( p_demux );
 792
 793         p_sys->i_next_vobu = p_sys->i_cur_block =
 794             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
 795
 796         /*
 797          * Angle management
 798          */
 799         p_sys->i_angles = p_vmg->tt_srpt->title[i_title].nr_of_angles;
 800         if( p_sys->i_angle > p_sys->i_angles ) p_sys->i_angle = 1;
 801
 802         /*
 803          * We've got enough info, time to open the title set data.
 804          */
 805         if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
 806             p_vmg->tt_srpt->title[i_title].title_set_nr,
 807             DVD_READ_TITLE_VOBS ) ) )
 808         {
 809             msg_Err( p_demux, "cannot open title (VTS_%02d_1.VOB)",
 810                      p_vmg->tt_srpt->title[i_title].title_set_nr );
 811             return VLC_EGENERIC;
 812         }
 813
 814         //IfoPrintTitle( p_demux );
 815
 816         /*
 817          * Destroy obsolete ES by reinitializing program 0
 818          * and find all ES in title with ifo data
 819          */
 820         es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 821
 822         for( i = 0; i < PS_TK_COUNT; i++ )
 823         {
 824             ps_track_t *tk = &p_sys->tk[i];
 825             if( tk->b_seen )
 826             {
 827                 es_format_Clean( &tk->fmt );
 828                 if( tk->es ) es_out_Del( p_demux->out, tk->es );
 829             }
 830             tk->b_seen = false;
 831         }
 832
 833         if( p_demux->info.i_title != i_title )
 834         {
 835             p_demux->info.i_update |=
 836                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
 837             p_demux->info.i_title = i_title;
 838             p_demux->info.i_seekpoint = 0;
 839         }
 840
 841         /* TODO: re-add angles */
 842
 843
 844         ESNew( p_demux, 0xe0, 0 ); /* Video, FIXME ? */
 845         const video_attr_t *p_attr = &p_vts->vtsi_mat->vts_video_attr;
 846         int i_video_height = p_attr->video_format != 0 ? 576 : 480;
 847         int i_video_width;
 848         switch( p_attr->picture_size )
 849         {
 850         case 0:
 851             i_video_width = 720;
 852             break;
 853         case 1:
 854             i_video_width = 704;
 855             break;
 856         case 2:
 857             i_video_width = 352;
 858             break;
 859         default:
 860         case 3:
 861             i_video_width = 352;
 862             i_video_height /= 2;
 863             break;
 864         }
 865         switch( p_attr->display_aspect_ratio )
 866         {
 867         case 0:
 868             p_sys->i_sar_num = 4 * i_video_height;
 869             p_sys->i_sar_den = 3 * i_video_width;
 870             break;
 871         case 3:
 872             p_sys->i_sar_num = 16 * i_video_height;
 873             p_sys->i_sar_den =  9 * i_video_width;
 874             break;
 875         default:
 876             p_sys->i_sar_num = 0;
 877             p_sys->i_sar_den = 0;
 878             break;
 879         }
 880
 881 #define audio_control \
 882     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 883
 884         /* Audio ES, in the order they appear in the .ifo */
 885         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams; i++ )
 886         {
 887             int i_position = 0;
 888             uint16_t i_id;
 889
 890             //IfoPrintAudio( p_demux, i );
 891
 892             /* Audio channel is active if first byte is 0x80 */
 893             if( audio_control & 0x8000 )
 894             {
 895                 i_position = ( audio_control & 0x7F00 ) >> 8;
 896
 897                 msg_Dbg( p_demux, "audio position  %d", i_position );
 898                 switch( p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format )
 899                 {
 900                 case 0x00: /* A52 */
 901                     i_id = (0x80 + i_position) | 0xbd00;
 902                     break;
 903                 case 0x02:
 904                 case 0x03: /* MPEG audio */
 905                     i_id = 0xc000 + i_position;
 906                     break;
 907                 case 0x04: /* LPCM */
 908                     i_id = (0xa0 + i_position) | 0xbd00;
 909                     break;
 910                 case 0x06: /* DTS */
 911                     i_id = (0x88 + i_position) | 0xbd00;
 912                     break;
 913                 default:
 914                     i_id = 0;
 915                     msg_Err( p_demux, "unknown audio type %.2x",
 916                         p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format );
 917                 }
 918
 919                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
 920                        vts_audio_attr[i - 1].lang_code );
 921             }
 922         }
 923 #undef audio_control
 924
 925 #define spu_palette \
 926     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->palette
 927
 928         memcpy( p_sys->clut, spu_palette, 16 * sizeof( uint32_t ) );
 929
 930 #define spu_control \
 931     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 932
 933         /* Sub Picture ES */
 934         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 935         {
 936             int i_position = 0;
 937             uint16_t i_id;
 938
 939             //IfoPrintSpu( p_sys, i );
 940             msg_Dbg( p_demux, "spu %d 0x%02x", i, spu_control );
 941
 942             if( spu_control & 0x80000000 )
 943             {
 944                 /*  there are several streams for one spu */
 945                 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 946                 {
 947                     /* 16:9 */
 948                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 949                     {
 950                     case 1: /* letterbox */
 951                         i_position = spu_control & 0xff;
 952                         break;
 953                     case 2: /* pan&scan */
 954                         i_position = ( spu_control >> 8 ) & 0xff;
 955                         break;
 956                     default: /* widescreen */
 957                         i_position = ( spu_control >> 16 ) & 0xff;
 958                         break;
 959                     }
 960                 }
 961                 else
 962                 {
 963                     /* 4:3 */
 964                     i_position = ( spu_control >> 24 ) & 0x7F;
 965                 }
 966
 967                 i_id = (0x20 + i_position) | 0xbd00;
 968
 969                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
 970                        vts_subp_attr[i - 1].lang_code );
 971             }
 972         }
 973 #undef spu_control
 974
 975     }
 976     else if( i_title != -1 && i_title != p_sys->i_title )
 977
 978     {
 979         return VLC_EGENERIC; /* Couldn't set title */
 980     }
 981
 982     /*
 983      * Chapter selection
 984      */
 985
 986     if( i_chapter >= 0 && i_chapter < p_sys->i_chapters )
 987     {
 988         pgc_id = p_vts->vts_ptt_srpt->title[
 989                      p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
 990         pgn = p_vts->vts_ptt_srpt->title[
 991                   p_sys->i_ttn - 1].ptt[i_chapter].pgn;
 992
 993         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 994
 995         p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
 996         p_sys->i_chapter = i_chapter;
 997         DvdReadFindCell( p_demux );
 998
 999         p_sys->i_title_offset = 0;
1000         for( i = p_sys->i_title_start_cell; i < p_sys->i_cur_cell; i++ )
1001         {
1002             p_sys->i_title_offset += p_pgc->cell_playback[i].last_sector -
1003                 p_pgc->cell_playback[i].first_sector + 1;
1004         }
1005
1006         p_sys->i_pack_len = 0;
1007         p_sys->i_next_vobu = p_sys->i_cur_block =
1008             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1009
1010         if( p_demux->info.i_seekpoint != i_chapter )
1011         {
1012             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1013             p_demux->info.i_seekpoint = i_chapter;
1014         }
1015     }
1016     else if( i_chapter != -1 )
1017
1018     {
1019         return VLC_EGENERIC; /* Couldn't set chapter */
1020     }
1021
1022 #undef p_pgc
1023 #undef p_vts
1024 #undef p_vmg
1025
1026     return VLC_SUCCESS;
1027 }
1028
1029 /*****************************************************************************
1030  * DvdReadSeek : Goes to a given position on the stream.
1031  *****************************************************************************
1032  * This one is used by the input and translate chronological position from
1033  * input to logical position on the device.
1034  *****************************************************************************/
1035 static void DvdReadSeek( demux_t *p_demux, int i_block_offset )
1036 {
1037     demux_sys_t *p_sys = p_demux->p_sys;
1038     int i_chapter = 0;
1039     int i_cell = 0;
1040     int i_vobu = 0;
1041     int i_sub_cell = 0;
1042     int i_block;
1043
1044 #define p_pgc p_sys->p_cur_pgc
1045 #define p_vts p_sys->p_vts_file
1046
1047     /* Find cell */
1048     i_block = i_block_offset;
1049     for( i_cell = p_sys->i_title_start_cell;
1050          i_cell <= p_sys->i_title_end_cell; i_cell++ )
1051     {
1052         if( i_block < (int)p_pgc->cell_playback[i_cell].last_sector -
1053             (int)p_pgc->cell_playback[i_cell].first_sector + 1 ) break;
1054
1055         i_block -= (p_pgc->cell_playback[i_cell].last_sector -
1056             p_pgc->cell_playback[i_cell].first_sector + 1);
1057     }
1058     if( i_cell > p_sys->i_title_end_cell )
1059     {
1060         msg_Err( p_demux, "couldn't find cell for block %i", i_block_offset );
1061         return;
1062     }
1063     i_block += p_pgc->cell_playback[i_cell].first_sector;
1064     p_sys->i_title_offset = i_block_offset;
1065
1066     /* Find chapter */
1067     for( i_chapter = 0; i_chapter < p_sys->i_chapters; i_chapter++ )
1068     {
1069         int pgc_id, pgn, i_tmp;
1070
1071         pgc_id = p_vts->vts_ptt_srpt->title[
1072                     p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
1073         pgn = p_vts->vts_ptt_srpt->title[
1074                     p_sys->i_ttn - 1].ptt[i_chapter].pgn;
1075
1076         i_tmp = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc->program_map[pgn-1];
1077
1078         if( i_tmp > i_cell ) break;
1079     }
1080
1081     if( i_chapter < p_sys->i_chapters &&
1082         p_demux->info.i_seekpoint != i_chapter )
1083     {
1084         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1085         p_demux->info.i_seekpoint = i_chapter;
1086     }
1087
1088     /* Find vobu */
1089     while( (int)p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu] <= i_block )
1090     {
1091         i_vobu++;
1092     }
1093
1094     /* Find sub_cell */
1095     while( p_vts->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1096            p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1097     {
1098         i_sub_cell++;
1099     }
1100
1101 #if 1
1102     msg_Dbg( p_demux, "cell %d i_sub_cell %d chapter %d vobu %d "
1103              "cell_sector %d vobu_sector %d sub_cell_sector %d",
1104              i_cell, i_sub_cell, i_chapter, i_vobu,
1105              p_sys->p_cur_pgc->cell_playback[i_cell].first_sector,
1106              p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu],
1107              p_vts->vts_c_adt->cell_adr_table[i_sub_cell - 1].start_sector);
1108 #endif
1109
1110     p_sys->i_cur_block = i_block;
1111     p_sys->i_next_vobu = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu];
1112     p_sys->i_pack_len = p_sys->i_next_vobu - i_block;
1113     p_sys->i_cur_cell = i_cell;
1114     p_sys->i_chapter = i_chapter;
1115     DvdReadFindCell( p_demux );
1116
1117 #undef p_vts
1118 #undef p_pgc
1119
1120     return;
1121 }
1122
1123 /*****************************************************************************
1124  * DvdReadHandleDSI
1125  *****************************************************************************/
1126 static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
1127 {
1128     demux_sys_t *p_sys = p_demux->p_sys;
1129
1130     navRead_DSI( &p_sys->dsi_pack, &p_data[DSI_START_BYTE] );
1131
1132     /*
1133      * Determine where we go next.  These values are the ones we mostly
1134      * care about.
1135      */
1136     p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
1137     p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
1138
1139     /*
1140      * Store the timecodes so we can get the current time
1141      */
1142     p_sys->i_title_cur_time = (mtime_t) (p_sys->dsi_pack.dsi_gi.nv_pck_scr / 90 * 1000);
1143     p_sys->i_cell_cur_time = (mtime_t) dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 );
1144
1145     /*
1146      * If we're not at the end of this cell, we can determine the next
1147      * VOBU to display using the VOBU_SRI information section of the
1148      * DSI.  Using this value correctly follows the current angle,
1149      * avoiding the doubled scenes in The Matrix, and makes our life
1150      * really happy.
1151      */
1152
1153     p_sys->i_next_vobu = p_sys->i_cur_block +
1154         ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1155
1156     if( p_sys->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL
1157         && p_sys->i_angle > 1 )
1158     {
1159         switch( ( p_sys->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1160         {
1161         case 0x4:
1162             /* Interleaved unit with no angle */
1163             if( p_sys->dsi_pack.sml_pbi.ilvu_sa != 0 )
1164             {
1165                 p_sys->i_next_vobu = p_sys->i_cur_block +
1166                     p_sys->dsi_pack.sml_pbi.ilvu_sa;
1167                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1168             }
1169             else
1170             {
1171                 p_sys->i_next_vobu = p_sys->i_cur_block +
1172                     p_sys->dsi_pack.dsi_gi.vobu_ea + 1;
1173             }
1174             break;
1175         case 0x5:
1176             /* vobu is end of ilvu */
1177             if( p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address )
1178             {
1179                 p_sys->i_next_vobu = p_sys->i_cur_block +
1180                     p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address;
1181                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1182
1183                 break;
1184             }
1185         case 0x6:
1186             /* vobu is beginning of ilvu */
1187         case 0x9:
1188             /* next scr is 0 */
1189         case 0xa:
1190             /* entering interleaved section */
1191         case 0x8:
1192             /* non interleaved cells in interleaved section */
1193         default:
1194             p_sys->i_next_vobu = p_sys->i_cur_block +
1195                 ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1196             break;
1197         }
1198     }
1199     else if( p_sys->dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
1200     {
1201         p_sys->i_cur_cell = p_sys->i_next_cell;
1202
1203         /* End of title */
1204         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells ) return;
1205
1206         DvdReadFindCell( p_demux );
1207
1208         p_sys->i_next_vobu =
1209             p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1210
1211         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 );
1212     }
1213
1214
1215 #if 0
1216     msg_Dbg( p_demux, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d c_time %lld",
1217              p_sys->dsi_pack.dsi_gi.nv_pck_scr,
1218              p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
1219              p_sys->dsi_pack.dsi_gi.vobu_ea,
1220              p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
1221              p_sys->dsi_pack.dsi_gi.vobu_c_idn,
1222              dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 ) );
1223
1224     msg_Dbg( p_demux, "cell duration: %lld",
1225              (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 ) );
1226
1227     msg_Dbg( p_demux, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1228              p_sys->dsi_pack.sml_pbi.category,
1229              p_sys->dsi_pack.sml_pbi.ilvu_ea,
1230              p_sys->dsi_pack.sml_pbi.ilvu_sa,
1231              p_sys->dsi_pack.sml_pbi.size );
1232
1233     msg_Dbg( p_demux, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1234              p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1235              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
1236              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);
1237 #endif
1238 }
1239
1240 /*****************************************************************************
1241  * DvdReadFindCell
1242  *****************************************************************************/
1243 static void DvdReadFindCell( demux_t *p_demux )
1244 {
1245     demux_sys_t *p_sys = p_demux->p_sys;
1246
1247     pgc_t *p_pgc;
1248     int   pgc_id, pgn;
1249     int   i = 0;
1250
1251 #define cell p_sys->p_cur_pgc->cell_playback
1252
1253     if( cell[p_sys->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1254     {
1255         p_sys->i_cur_cell += p_sys->i_angle - 1;
1256
1257         while( cell[p_sys->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1258         {
1259             i++;
1260         }
1261         p_sys->i_next_cell = p_sys->i_cur_cell + i + 1;
1262     }
1263     else
1264     {
1265         p_sys->i_next_cell = p_sys->i_cur_cell + 1;
1266     }
1267
1268 #undef cell
1269
1270     if( p_sys->i_chapter + 1 >= p_sys->i_chapters ) return;
1271
1272     pgc_id = p_sys->p_vts_file->vts_ptt_srpt->title[
1273                 p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgcn;
1274     pgn = p_sys->p_vts_file->vts_ptt_srpt->title[
1275               p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgn;
1276     p_pgc = p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
1277
1278     if( p_sys->i_cur_cell >= p_pgc->program_map[pgn - 1] - 1 )
1279     {
1280         p_sys->i_chapter++;
1281
1282         if( p_sys->i_chapter < p_sys->i_chapters &&
1283             p_demux->info.i_seekpoint != p_sys->i_chapter )
1284         {
1285             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1286             p_demux->info.i_seekpoint = p_sys->i_chapter;
1287         }
1288     }
1289 }
1290
1291 /*****************************************************************************
1292  * DemuxTitles: get the titles/chapters structure
1293  *****************************************************************************/
1294 static void DemuxTitles( demux_t *p_demux, int *pi_angle )
1295 {
1296     VLC_UNUSED( pi_angle );
1297
1298     demux_sys_t *p_sys = p_demux->p_sys;
1299     input_title_t *t;
1300     seekpoint_t *s;
1301
1302     /* Find out number of titles/chapters */
1303 #define tt_srpt p_sys->p_vmg_file->tt_srpt
1304
1305     int32_t i_titles = tt_srpt->nr_of_srpts;
1306     msg_Dbg( p_demux, "number of titles: %d", i_titles );
1307
1308     for( int i = 0; i < i_titles; i++ )
1309     {
1310         int32_t i_chapters = 0;
1311         int j;
1312
1313         i_chapters = tt_srpt->title[i].nr_of_ptts;
1314         msg_Dbg( p_demux, "title %d has %d chapters", i, i_chapters );
1315
1316         t = vlc_input_title_New();
1317
1318         for( j = 0; j < __MAX( i_chapters, 1 ); j++ )
1319         {
1320             s = vlc_seekpoint_New();
1321             TAB_APPEND( t->i_seekpoint, t->seekpoint, s );
1322         }
1323
1324         TAB_APPEND( p_sys->i_titles, p_sys->titles, t );
1325     }
1326
1327 #undef tt_srpt
1328 }