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

   1 /*****************************************************************************
   2  * dvdread.c : DvdRead input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 VideoLAN
   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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <stdio.h>
  29 #include <stdlib.h>                                      /* malloc(), free() */
  30 #include <string.h>                                              /* strdup() */
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc/input.h>
  34
  35 #include "iso_lang.h"
  36
  37 #include "../demux/ps.h"
  38
  39 #ifdef HAVE_UNISTD_H
  40 #   include <unistd.h>
  41 #endif
  42
  43 #include <fcntl.h>
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #include <string.h>
  47
  48 #include <dvdread/dvd_reader.h>
  49 #include <dvdread/ifo_types.h>
  50 #include <dvdread/ifo_read.h>
  51 #include <dvdread/nav_read.h>
  52 #include <dvdread/nav_print.h>
  53
  54 /*****************************************************************************
  55  * Module descriptor
  56  *****************************************************************************/
  57 #define ANGLE_TEXT N_("DVD angle")
  58 #define ANGLE_LONGTEXT N_( \
  59     "Allows you to select the default DVD angle." )
  60
  61 #define CACHING_TEXT N_("Caching value in ms")
  62 #define CACHING_LONGTEXT N_( \
  63     "Allows you to modify the default caching value for DVDread streams. " \
  64     "This value should be set in millisecond units." )
  65
  66 #define CSSMETHOD_TEXT N_("Method used by libdvdcss for decryption")
  67 #define CSSMETHOD_LONGTEXT N_( \
  68     "Set the method used by libdvdcss for key decryption.\n" \
  69     "title: decrypted title key is guessed from the encrypted sectors of " \
  70            "the stream. Thus it should work with a file as well as the " \
  71            "DVD device. But it sometimes takes much time to decrypt a title " \
  72            "key and may even fail. With this method, the key is only checked "\
  73            "at the beginning of each title, so it won't work if the key " \
  74            "changes in the middle of a title.\n" \
  75     "disc: the disc key is first cracked, then all title keys can be " \
  76            "decrypted instantly, which allows us to check them often.\n" \
  77     "key: the same as \"disc\" if you don't have a file with player keys " \
  78            "at compilation time. If you do, the decryption of the disc key " \
  79            "will be faster with this method. It is the one that was used by " \
  80            "libcss.\n" \
  81     "The default method is: key.")
  82
  83 static char *psz_css_list[] = { "title", "disc", "key" };
  84 static char *psz_css_list_text[] = { N_("title"), N_("Disc"), N_("Key") };
  85
  86 static int  Open ( vlc_object_t * );
  87 static void Close( vlc_object_t * );
  88
  89 vlc_module_begin();
  90     set_shortname( _("DVD without menus") );
  91     set_description( _("DVDRead Input (DVD without menu support)") );
  92     set_category( CAT_INPUT );
  93     set_subcategory( SUBCAT_INPUT_ACCESS );
  94     add_integer( "dvdread-angle", 1, NULL, ANGLE_TEXT,
  95         ANGLE_LONGTEXT, VLC_FALSE );
  96     add_integer( "dvdread-caching", DEFAULT_PTS_DELAY / 1000, NULL,
  97         CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
  98     add_string( "dvdread-css-method", NULL, NULL, CSSMETHOD_TEXT,
  99                 CSSMETHOD_LONGTEXT, VLC_TRUE );
 100         change_string_list( psz_css_list, psz_css_list_text, 0 );
 101     set_capability( "access_demux", 0 );
 102     add_shortcut( "dvd" );
 103     add_shortcut( "dvdread" );
 104     add_shortcut( "dvdsimple" );
 105     set_callbacks( Open, Close );
 106 vlc_module_end();
 107
 108 /* how many blocks DVDRead will read in each loop */
 109 #define DVD_BLOCK_READ_ONCE 4
 110
 111 /*****************************************************************************
 112  * Local prototypes
 113  *****************************************************************************/
 114
 115 struct demux_sys_t
 116 {
 117     /* DVDRead state */
 118     dvd_reader_t *p_dvdread;
 119     dvd_file_t   *p_title;
 120
 121     ifo_handle_t *p_vmg_file;
 122     ifo_handle_t *p_vts_file;
 123
 124     int i_title;
 125     int i_chapter, i_chapters;
 126     int i_angle, i_angles;
 127
 128     tt_srpt_t    *p_tt_srpt;
 129     pgc_t        *p_cur_pgc;
 130     dsi_t        dsi_pack;
 131     int          i_ttn;
 132
 133     int i_pack_len;
 134     int i_cur_block;
 135     int i_next_vobu;
 136
 137     /* Current title start/end blocks */
 138     int i_title_start_block;
 139     int i_title_end_block;
 140     int i_title_blocks;
 141     int i_title_offset;
 142
 143     int i_title_start_cell;
 144     int i_title_end_cell;
 145     int i_cur_cell;
 146     int i_next_cell;
 147
 148     /* Track */
 149     ps_track_t    tk[PS_TK_COUNT];
 150     int           i_mux_rate;
 151
 152     int           i_titles;
 153     input_title_t **titles;
 154
 155     /* Video */
 156     int i_aspect;
 157
 158     /* SPU */
 159     uint32_t clut[16];
 160 };
 161
 162 static int Control   ( demux_t *, int, va_list );
 163 static int Demux     ( demux_t * );
 164 static int DemuxBlock( demux_t *, uint8_t *, int );
 165
 166 static void DemuxTitles( demux_t *, int * );
 167 static void ESNew( demux_t *, int, int );
 168
 169 static int  DvdReadSetArea  ( demux_t *, int, int, int );
 170 static void DvdReadSeek     ( demux_t *, int );
 171 static void DvdReadHandleDSI( demux_t *, uint8_t * );
 172 static void DvdReadFindCell ( demux_t * );
 173
 174 /*****************************************************************************
 175  * Open:
 176  *****************************************************************************/
 177 static int Open( vlc_object_t *p_this )
 178 {
 179     demux_t      *p_demux = (demux_t*)p_this;
 180     demux_sys_t  *p_sys;
 181     char         *psz_name;
 182     char         *psz_dvdcss_env;
 183     dvd_reader_t *p_dvdread;
 184     ifo_handle_t *p_vmg_file;
 185     vlc_value_t  val;
 186
 187     if( !p_demux->psz_path || !*p_demux->psz_path )
 188     {
 189         /* Only when selected */
 190         if( !p_this->b_force ) return VLC_EGENERIC;
 191
 192         psz_name = var_CreateGetString( p_this, "dvd" );
 193         if( !psz_name || !*psz_name )
 194         {
 195             if( psz_name ) free( psz_name );
 196             return VLC_EGENERIC;
 197         }
 198     }
 199     else psz_name = strdup( p_demux->psz_path );
 200
 201 #ifdef WIN32
 202     if( psz_name[0] && psz_name[1] == ':' &&
 203         psz_name[2] == '\\' && psz_name[3] == '\0' ) psz_name[2] = '\0';
 204 #endif
 205
 206     /* Override environment variable DVDCSS_METHOD with config option
 207      * (FIXME: this creates a small memory leak) */
 208     psz_dvdcss_env = config_GetPsz( p_demux, "dvdread-css-method" );
 209     if( psz_dvdcss_env && *psz_dvdcss_env )
 210     {
 211         char *psz_env;
 212
 213         psz_env = malloc( strlen("DVDCSS_METHOD=") +
 214                           strlen( psz_dvdcss_env ) + 1 );
 215         if( !psz_env )
 216         {
 217             free( psz_dvdcss_env );
 218             return VLC_ENOMEM;
 219         }
 220
 221         sprintf( psz_env, "%s%s", "DVDCSS_METHOD=", psz_dvdcss_env );
 222
 223         putenv( psz_env );
 224     }
 225     if( psz_dvdcss_env ) free( psz_dvdcss_env );
 226
 227     /* Open dvdread */
 228     if( !(p_dvdread = DVDOpen( psz_name )) )
 229     {
 230         msg_Err( p_demux, "DVDRead cannot open source: %s", psz_name );
 231         free( psz_name );
 232         return VLC_EGENERIC;
 233     }
 234     free( psz_name );
 235
 236     /* Ifo allocation & initialisation */
 237     if( !( p_vmg_file = ifoOpen( p_dvdread, 0 ) ) )
 238     {
 239         msg_Warn( p_demux, "cannot open VMG info" );
 240         return VLC_EGENERIC;
 241     }
 242     msg_Dbg( p_demux, "VMG opened" );
 243
 244     /* Fill p_demux field */
 245     p_demux->pf_demux = Demux;
 246     p_demux->pf_control = Control;
 247     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 248     memset( p_sys, 0, sizeof( demux_sys_t ) );
 249
 250     ps_track_init( p_sys->tk );
 251     p_sys->i_aspect = -1;
 252     p_sys->i_mux_rate = 0;
 253
 254     p_sys->p_dvdread = p_dvdread;
 255     p_sys->p_vmg_file = p_vmg_file;
 256     p_sys->p_title = NULL;
 257     p_sys->p_vts_file = NULL;
 258
 259     p_sys->i_title = p_sys->i_chapter = -1;
 260
 261     var_Create( p_demux, "dvdread-angle", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
 262     var_Get( p_demux, "dvdread-angle", &val );
 263     p_sys->i_angle = val.i_int > 0 ? val.i_int : 1;
 264
 265     DemuxTitles( p_demux, &p_sys->i_angle );
 266     DvdReadSetArea( p_demux, 0, 0, p_sys->i_angle );
 267
 268     /* Update default_pts to a suitable value for dvdread access */
 269     var_Create( p_demux, "dvdread-caching",
 270                 VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
 271
 272     return VLC_SUCCESS;
 273 }
 274
 275 /*****************************************************************************
 276  * Close:
 277  *****************************************************************************/
 278 static void Close( vlc_object_t *p_this )
 279 {
 280     demux_t     *p_demux = (demux_t*)p_this;
 281     demux_sys_t *p_sys = p_demux->p_sys;
 282     int i;
 283
 284     for( i = 0; i < PS_TK_COUNT; i++ )
 285     {
 286         ps_track_t *tk = &p_sys->tk[i];
 287         if( tk->b_seen )
 288         {
 289             es_format_Clean( &tk->fmt );
 290             if( tk->es ) es_out_Del( p_demux->out, tk->es );
 291         }
 292     }
 293
 294     /* Close libdvdread */
 295     if( p_sys->p_title ) DVDCloseFile( p_sys->p_title );
 296     if( p_sys->p_vts_file ) ifoClose( p_sys->p_vts_file );
 297     if( p_sys->p_vmg_file ) ifoClose( p_sys->p_vmg_file );
 298     DVDClose( p_sys->p_dvdread );
 299
 300     free( p_sys );
 301 }
 302
 303 static int64_t dvdtime_to_time( dvd_time_t *dtime, uint8_t still_time )
 304 {
 305 /* Macro to convert Binary Coded Decimal to Decimal */
 306 #define BCD2D(__x__) (((__x__ & 0xf0) >> 4) * 10 + (__x__ & 0x0f))
 307
 308     double f_fps, f_ms;
 309     int64_t i_micro_second = 0;
 310
 311     if (still_time == 0 || still_time == 0xFF)
 312     {
 313         i_micro_second += (int64_t)(BCD2D(dtime->hour)) * 60 * 60 * 1000000;
 314         i_micro_second += (int64_t)(BCD2D(dtime->minute)) * 60 * 1000000;
 315         i_micro_second += (int64_t)(BCD2D(dtime->second)) * 1000000;
 316
 317         switch((dtime->frame_u & 0xc0) >> 6)
 318         {
 319         case 1:
 320             f_fps = 25.0;
 321             break;
 322         case 3:
 323             f_fps = 29.97;
 324             break;
 325         default:
 326             f_fps = 2500.0;
 327             break;
 328         }
 329         f_ms = BCD2D(dtime->frame_u&0x3f) * 1000.0 / f_fps;
 330         i_micro_second += (int64_t)(f_ms * 1000.0);
 331     }
 332     else
 333     {
 334         i_micro_second = still_time;
 335         i_micro_second = (int64_t)((double)i_micro_second * 1000000.0);
 336     }
 337
 338     return i_micro_second;
 339 }
 340
 341 /*****************************************************************************
 342  * Control:
 343  *****************************************************************************/
 344 static int Control( demux_t *p_demux, int i_query, va_list args )
 345 {
 346     demux_sys_t *p_sys = p_demux->p_sys;
 347     double f, *pf;
 348     vlc_bool_t *pb;
 349     int64_t *pi64;
 350     input_title_t ***ppp_title;
 351     int *pi_int;
 352     int i;
 353
 354     switch( i_query )
 355     {
 356         case DEMUX_GET_POSITION:
 357         {
 358             pf = (double*) va_arg( args, double* );
 359
 360             if( p_sys->i_title_blocks > 0 )
 361                 *pf = (double)p_sys->i_title_offset / p_sys->i_title_blocks;
 362             else
 363                 *pf = 0.0;
 364
 365             return VLC_SUCCESS;
 366         }
 367         case DEMUX_SET_POSITION:
 368         {
 369             f = (double)va_arg( args, double );
 370
 371             DvdReadSeek( p_demux, f * p_sys->i_title_blocks );
 372
 373             return VLC_SUCCESS;
 374         }
 375         case DEMUX_GET_TIME:
 376             pi64 = (int64_t*)va_arg( args, int64_t * );
 377             if( p_sys->i_mux_rate > 0 )
 378             {
 379                 *pi64 = (int64_t)1000000 * DVD_VIDEO_LB_LEN *
 380                         p_sys->i_title_offset / 50 / p_sys->i_mux_rate;
 381                 return VLC_SUCCESS;
 382             }
 383             *pi64 = 0;
 384             return VLC_EGENERIC;
 385
 386         case DEMUX_GET_LENGTH:
 387             pi64 = (int64_t*)va_arg( args, int64_t * );
 388             if (p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles)
 389             {
 390                 *pi64 = dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 );
 391                 p_sys->i_mux_rate = p_sys->i_title_blocks * DVD_VIDEO_LB_LEN / (*pi64 / 20000);
 392                 return VLC_SUCCESS;
 393             }
 394             *pi64 = 0;
 395             return VLC_EGENERIC;
 396
 397         /* Special for access_demux */
 398         case DEMUX_CAN_PAUSE:
 399         case DEMUX_CAN_CONTROL_PACE:
 400             /* TODO */
 401             pb = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
 402             *pb = VLC_TRUE;
 403             return VLC_SUCCESS;
 404
 405         case DEMUX_SET_PAUSE_STATE:
 406             return VLC_SUCCESS;
 407
 408         case DEMUX_GET_TITLE_INFO:
 409             ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
 410             pi_int    = (int*)va_arg( args, int* );
 411             *((int*)va_arg( args, int* )) = 1; /* Title offset */
 412             *((int*)va_arg( args, int* )) = 1; /* Chapter offset */
 413
 414             /* Duplicate title infos */
 415             *pi_int = p_sys->i_titles;
 416             *ppp_title = malloc( sizeof(input_title_t **) * p_sys->i_titles );
 417             for( i = 0; i < p_sys->i_titles; i++ )
 418             {
 419                 (*ppp_title)[i] = vlc_input_title_Duplicate(p_sys->titles[i]);
 420             }
 421             return VLC_SUCCESS;
 422
 423         case DEMUX_SET_TITLE:
 424             i = (int)va_arg( args, int );
 425             if( DvdReadSetArea( p_demux, i, 0, -1 ) != VLC_SUCCESS )
 426             {
 427                 msg_Warn( p_demux, "cannot set title/chapter" );
 428                 return VLC_EGENERIC;
 429             }
 430             p_demux->info.i_update |=
 431                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
 432             p_demux->info.i_title = i;
 433             p_demux->info.i_seekpoint = 0;
 434             return VLC_SUCCESS;
 435
 436         case DEMUX_SET_SEEKPOINT:
 437             i = (int)va_arg( args, int );
 438             if( DvdReadSetArea( p_demux, -1, i, -1 ) != VLC_SUCCESS )
 439             {
 440                 msg_Warn( p_demux, "cannot set title/chapter" );
 441                 return VLC_EGENERIC;
 442             }
 443             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
 444             p_demux->info.i_seekpoint = i;
 445             return VLC_SUCCESS;
 446
 447         case DEMUX_GET_PTS_DELAY:
 448             pi64 = (int64_t*)va_arg( args, int64_t * );
 449             *pi64 = (int64_t)var_GetInteger( p_demux, "dvdread-caching" )*1000;
 450             return VLC_SUCCESS;
 451
 452         /* TODO implement others */
 453         default:
 454             return VLC_EGENERIC;
 455     }
 456 }
 457
 458 /*****************************************************************************
 459  * Demux:
 460  *****************************************************************************/
 461 static int Demux( demux_t *p_demux )
 462 {
 463     demux_sys_t *p_sys = p_demux->p_sys;
 464
 465     uint8_t p_buffer[DVD_VIDEO_LB_LEN * DVD_BLOCK_READ_ONCE];
 466     int i_blocks_once, i_read;
 467     int i;
 468
 469     /*
 470      * Playback by cell in this pgc, starting at the cell for our chapter.
 471      */
 472
 473     /*
 474      * Check end of pack, and select the following one
 475      */
 476     if( !p_sys->i_pack_len )
 477     {
 478         /* Read NAV packet */
 479         if( DVDReadBlocks( p_sys->p_title, p_sys->i_next_vobu,
 480                            1, p_buffer ) != 1 )
 481         {
 482             msg_Err( p_demux, "read failed for block %d", p_sys->i_next_vobu );
 483             return -1;
 484         }
 485
 486         /* Basic check to be sure we don't have a empty title
 487          * go to next title if so */
 488         //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
 489
 490         /* Parse the contained dsi packet */
 491         DvdReadHandleDSI( p_demux, p_buffer );
 492
 493         /* End of title */
 494         if( p_sys->i_next_vobu > p_sys->i_title_end_block )
 495         {
 496             if( p_sys->i_title + 1 >= p_sys->i_titles )
 497             {
 498                 return 0; /* EOF */
 499             }
 500
 501             DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
 502         }
 503
 504         if( p_sys->i_pack_len >= 1024 )
 505         {
 506             msg_Err( p_demux, "i_pack_len >= 1024 (%i). "
 507                      "This shouldn't happen!", p_sys->i_pack_len );
 508             return 0; /* EOF */
 509         }
 510
 511         /* FIXME: Ugly kludge: we send the pack block to the input for it
 512          * sometimes has a zero scr and restart the sync */
 513         p_sys->i_cur_block++;
 514         p_sys->i_title_offset++;
 515
 516         DemuxBlock( p_demux, p_buffer, DVD_VIDEO_LB_LEN );
 517     }
 518
 519     if( p_sys->i_cur_block > p_sys->i_title_end_block )
 520     {
 521         if( p_sys->i_title + 1 >= p_sys->i_titles )
 522         {
 523             return 0; /* EOF */
 524         }
 525
 526         DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
 527     }
 528
 529     /*
 530      * Read actual data
 531      */
 532     i_blocks_once = __MIN( p_sys->i_pack_len, DVD_BLOCK_READ_ONCE );
 533     p_sys->i_pack_len -= i_blocks_once;
 534
 535     /* Reads from DVD */
 536     i_read = DVDReadBlocks( p_sys->p_title, p_sys->i_cur_block,
 537                             i_blocks_once, p_buffer );
 538     if( i_read != i_blocks_once )
 539     {
 540         msg_Err( p_demux, "read failed for %d/%d blocks at 0x%02x",
 541                  i_read, i_blocks_once, p_sys->i_cur_block );
 542         return -1;
 543     }
 544
 545     p_sys->i_cur_block += i_read;
 546     p_sys->i_title_offset += i_read;
 547
 548 #if 0
 549     msg_Dbg( p_demux, "i_blocks: %d len: %d current: 0x%02x",
 550              i_read, p_sys->i_pack_len, p_sys->i_cur_block );
 551 #endif
 552
 553     for( i = 0; i < i_read; i++ )
 554     {
 555         DemuxBlock( p_demux, p_buffer + i * DVD_VIDEO_LB_LEN,
 556                     DVD_VIDEO_LB_LEN );
 557     }
 558
 559 #undef p_pgc
 560
 561     return 1;
 562 }
 563
 564 /*****************************************************************************
 565  * DemuxBlock: demux a given block
 566  *****************************************************************************/
 567 static int DemuxBlock( demux_t *p_demux, uint8_t *pkt, int i_pkt )
 568 {
 569     demux_sys_t *p_sys = p_demux->p_sys;
 570     uint8_t     *p = pkt;
 571
 572     while( p < &pkt[i_pkt] )
 573     {
 574         int i_size = ps_pkt_size( p, &pkt[i_pkt] - p );
 575         block_t *p_pkt;
 576         if( i_size <= 0 )
 577         {
 578             break;
 579         }
 580
 581         /* Create a block */
 582         p_pkt = block_New( p_demux, i_size );
 583         memcpy( p_pkt->p_buffer, p, i_size);
 584
 585         /* Parse it and send it */
 586         switch( 0x100 | p[3] )
 587         {
 588         case 0x1b9:
 589         case 0x1bb:
 590         case 0x1bc:
 591
 592 #ifdef DVDREAD_DEBUG
 593             if( p[3] == 0xbc )
 594             {
 595                 msg_Warn( p_demux, "received a PSM packet" );
 596             }
 597             else if( p[3] == 0xbb )
 598             {
 599                 msg_Warn( p_demux, "received a SYSTEM packet" );
 600             }
 601 #endif
 602             block_Release( p_pkt );
 603             break;
 604
 605         case 0x1ba:
 606         {
 607             int64_t i_scr;
 608             int i_mux_rate;
 609             if( !ps_pkt_parse_pack( p_pkt, &i_scr, &i_mux_rate ) )
 610             {
 611                 es_out_Control( p_demux->out, ES_OUT_SET_PCR, i_scr );
 612 /*                if( i_mux_rate > 0 ) p_sys->i_mux_rate = i_mux_rate;*/
 613             }
 614             block_Release( p_pkt );
 615             break;
 616         }
 617         default:
 618         {
 619             int i_id = ps_pkt_id( p_pkt );
 620             if( i_id >= 0xc0 )
 621             {
 622                 ps_track_t *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
 623
 624                 if( !tk->b_seen )
 625                 {
 626                     ESNew( p_demux, i_id, 0 );
 627                 }
 628                 if( tk->b_seen && tk->es &&
 629                     !ps_pkt_parse_pes( p_pkt, tk->i_skip ) )
 630                 {
 631                     es_out_Send( p_demux->out, tk->es, p_pkt );
 632                 }
 633                 else
 634                 {
 635                     block_Release( p_pkt );
 636                 }
 637             }
 638             else
 639             {
 640                 block_Release( p_pkt );
 641             }
 642             break;
 643         }
 644         }
 645
 646         p += i_size;
 647     }
 648
 649     return VLC_SUCCESS;
 650 }
 651
 652 /*****************************************************************************
 653  * ESNew: register a new elementary stream
 654  *****************************************************************************/
 655 static void ESNew( demux_t *p_demux, int i_id, int i_lang )
 656 {
 657     demux_sys_t *p_sys = p_demux->p_sys;
 658     ps_track_t  *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
 659     char psz_language[3];
 660
 661     if( tk->b_seen ) return;
 662
 663     if( ps_track_fill( tk, 0, i_id ) )
 664     {
 665         msg_Warn( p_demux, "unknown codec for id=0x%x", i_id );
 666         return;
 667     }
 668
 669     psz_language[0] = psz_language[1] = psz_language[2] = 0;
 670     if( i_lang && i_lang != 0xffff )
 671     {
 672         psz_language[0] = (i_lang >> 8)&0xff;
 673         psz_language[1] = (i_lang     )&0xff;
 674     }
 675
 676     /* Add a new ES */
 677     if( tk->fmt.i_cat == VIDEO_ES )
 678     {
 679         if( p_sys->i_aspect >= 0 )
 680         {
 681             tk->fmt.video.i_aspect = p_sys->i_aspect;
 682         }
 683     }
 684     else if( tk->fmt.i_cat == AUDIO_ES )
 685     {
 686         int i_audio = -1;
 687         /* find the audio number PLEASE find another way */
 688         if( (i_id&0xbdf8) == 0xbd88 )       /* dts */
 689         {
 690             i_audio = i_id&0x07;
 691         }
 692         else if( (i_id&0xbdf0) == 0xbd80 )  /* a52 */
 693         {
 694             i_audio = i_id&0xf;
 695         }
 696         else if( (i_id&0xbdf0) == 0xbda0 )  /* lpcm */
 697         {
 698             i_audio = i_id&0x1f;
 699         }
 700         else if( ( i_id&0xe0 ) == 0xc0 )    /* mpga */
 701         {
 702             i_audio = i_id&0x1f;
 703         }
 704
 705         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
 706     }
 707     else if( tk->fmt.i_cat == SPU_ES )
 708     {
 709         /* Palette */
 710         tk->fmt.subs.spu.palette[0] = 0xBeef;
 711         memcpy( &tk->fmt.subs.spu.palette[1], p_sys->clut,
 712                 16 * sizeof( uint32_t ) );
 713
 714         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
 715     }
 716
 717     tk->es = es_out_Add( p_demux->out, &tk->fmt );
 718     tk->b_seen = VLC_TRUE;
 719 }
 720
 721 /*****************************************************************************
 722  * DvdReadSetArea: initialize input data for title x, chapter y.
 723  * It should be called for each user navigation request.
 724  *****************************************************************************
 725  * Take care that i_title and i_chapter start from 0.
 726  *****************************************************************************/
 727 static int DvdReadSetArea( demux_t *p_demux, int i_title, int i_chapter,
 728                            int i_angle )
 729 {
 730     demux_sys_t *p_sys = p_demux->p_sys;
 731     int pgc_id = 0, pgn = 0;
 732     int i;
 733
 734 #define p_pgc p_sys->p_cur_pgc
 735 #define p_vmg p_sys->p_vmg_file
 736 #define p_vts p_sys->p_vts_file
 737
 738     if( i_title >= 0 && i_title < p_sys->i_titles &&
 739         i_title != p_sys->i_title )
 740     {
 741         int i_start_cell, i_end_cell;
 742
 743         if( p_sys->p_title != NULL ) DVDCloseFile( p_sys->p_title );
 744         if( p_vts != NULL ) ifoClose( p_vts );
 745         p_sys->i_title = i_title;
 746
 747         /*
 748          *  We have to load all title information
 749          */
 750         msg_Dbg( p_demux, "open VTS %d, for title %d",
 751                  p_vmg->tt_srpt->title[i_title].title_set_nr, i_title + 1 );
 752
 753         /* Ifo vts */
 754         if( !( p_vts = ifoOpen( p_sys->p_dvdread,
 755                p_vmg->tt_srpt->title[i_title].title_set_nr ) ) )
 756         {
 757             msg_Err( p_demux, "fatal error in vts ifo" );
 758             return VLC_EGENERIC;
 759         }
 760
 761         /* Title position inside the selected vts */
 762         p_sys->i_ttn = p_vmg->tt_srpt->title[i_title].vts_ttn;
 763
 764         /* Find title start/end */
 765         pgc_id = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgcn;
 766         pgn = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgn;
 767         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 768
 769         p_sys->i_title_start_cell =
 770             i_start_cell = p_pgc->program_map[pgn - 1] - 1;
 771         p_sys->i_title_start_block =
 772             p_pgc->cell_playback[i_start_cell].first_sector;
 773
 774         p_sys->i_title_end_cell =
 775             i_end_cell = p_pgc->nr_of_cells - 1;
 776         p_sys->i_title_end_block =
 777             p_pgc->cell_playback[i_end_cell].last_sector;
 778
 779         p_sys->i_title_offset = 0;
 780
 781         p_sys->i_title_blocks = 0;
 782         for( i = i_start_cell; i <= i_end_cell; i++ )
 783         {
 784             p_sys->i_title_blocks += p_pgc->cell_playback[i].last_sector -
 785                 p_pgc->cell_playback[i].first_sector + 1;
 786         }
 787
 788         msg_Dbg( p_demux, "title %d vts_title %d pgc %d pgn %d "
 789                  "start %d end %d blocks: %d",
 790                  i_title + 1, p_sys->i_ttn, pgc_id, pgn,
 791                  p_sys->i_title_start_block, p_sys->i_title_end_block,
 792                  p_sys->i_title_blocks );
 793
 794         /*
 795          * Set properties for current chapter
 796          */
 797         p_sys->i_chapter = 0;
 798         p_sys->i_chapters =
 799             p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].nr_of_ptts;
 800
 801         pgc_id = p_vts->vts_ptt_srpt->title[
 802                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgcn;
 803         pgn = p_vts->vts_ptt_srpt->title[
 804                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgn;
 805
 806         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 807         p_sys->i_pack_len = 0;
 808         p_sys->i_next_cell =
 809             p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
 810         DvdReadFindCell( p_demux );
 811
 812         p_sys->i_next_vobu = p_sys->i_cur_block =
 813             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
 814
 815         /*
 816          * Angle management
 817          */
 818         p_sys->i_angles = p_vmg->tt_srpt->title[i_title].nr_of_angles;
 819         if( p_sys->i_angle > p_sys->i_angles ) p_sys->i_angle = 1;
 820
 821         /*
 822          * We've got enough info, time to open the title set data.
 823          */
 824         if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
 825             p_vmg->tt_srpt->title[i_title].title_set_nr,
 826             DVD_READ_TITLE_VOBS ) ) )
 827         {
 828             msg_Err( p_demux, "cannot open title (VTS_%02d_1.VOB)",
 829                      p_vmg->tt_srpt->title[i_title].title_set_nr );
 830             return VLC_EGENERIC;
 831         }
 832
 833         //IfoPrintTitle( p_demux );
 834
 835         /*
 836          * Destroy obsolete ES by reinitializing program 0
 837          * and find all ES in title with ifo data
 838          */
 839         es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 840
 841         for( i = 0; i < PS_TK_COUNT; i++ )
 842         {
 843             ps_track_t *tk = &p_sys->tk[i];
 844             if( tk->b_seen )
 845             {
 846                 es_format_Clean( &tk->fmt );
 847                 if( tk->es ) es_out_Del( p_demux->out, tk->es );
 848             }
 849             tk->b_seen = VLC_FALSE;
 850         }
 851
 852         if( p_demux->info.i_title != i_title )
 853         {
 854             p_demux->info.i_update |=
 855                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
 856             p_demux->info.i_title = i_title;
 857             p_demux->info.i_seekpoint = 0;
 858         }
 859
 860         /* TODO: re-add angles */
 861
 862
 863         ESNew( p_demux, 0xe0, 0 ); /* Video, FIXME ? */
 864         p_sys->i_aspect = p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio;
 865
 866 #define audio_control \
 867     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 868
 869         /* Audio ES, in the order they appear in the .ifo */
 870         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams; i++ )
 871         {
 872             int i_position = 0;
 873             uint16_t i_id;
 874
 875             //IfoPrintAudio( p_demux, i );
 876
 877             /* Audio channel is active if first byte is 0x80 */
 878             if( audio_control & 0x8000 )
 879             {
 880                 i_position = ( audio_control & 0x7F00 ) >> 8;
 881
 882                 msg_Dbg( p_demux, "audio position  %d", i_position );
 883                 switch( p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format )
 884                 {
 885                 case 0x00: /* A52 */
 886                     i_id = (0x80 + i_position) | 0xbd00;
 887                     break;
 888                 case 0x02:
 889                 case 0x03: /* MPEG audio */
 890                     i_id = 0xc000 + i_position;
 891                     break;
 892                 case 0x04: /* LPCM */
 893                     i_id = (0xa0 + i_position) | 0xbd00;
 894                     break;
 895                 case 0x06: /* DTS */
 896                     i_id = (0x88 + i_position) | 0xbd00;
 897                     break;
 898                 default:
 899                     i_id = 0;
 900                     msg_Err( p_demux, "unknown audio type %.2x",
 901                         p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format );
 902                 }
 903
 904                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
 905                        vts_audio_attr[i - 1].lang_code );
 906             }
 907         }
 908 #undef audio_control
 909
 910 #define spu_palette \
 911     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->palette
 912
 913         memcpy( p_sys->clut, spu_palette, 16 * sizeof( uint32_t ) );
 914
 915 #define spu_control \
 916     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 917
 918         /* Sub Picture ES */
 919         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 920         {
 921             int i_position = 0;
 922             uint16_t i_id;
 923
 924             //IfoPrintSpu( p_sys, i );
 925             msg_Dbg( p_demux, "spu %d 0x%02x", i, spu_control );
 926
 927             if( spu_control & 0x80000000 )
 928             {
 929                 /*  there are several streams for one spu */
 930                 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 931                 {
 932                     /* 16:9 */
 933                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 934                     {
 935                     case 1: /* letterbox */
 936                         i_position = spu_control & 0xff;
 937                         break;
 938                     case 2: /* pan&scan */
 939                         i_position = ( spu_control >> 8 ) & 0xff;
 940                         break;
 941                     default: /* widescreen */
 942                         i_position = ( spu_control >> 16 ) & 0xff;
 943                         break;
 944                     }
 945                 }
 946                 else
 947                 {
 948                     /* 4:3 */
 949                     i_position = ( spu_control >> 24 ) & 0x7F;
 950                 }
 951
 952                 i_id = (0x20 + i_position) | 0xbd00;
 953
 954                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
 955                        vts_subp_attr[i - 1].lang_code );
 956             }
 957         }
 958 #undef spu_control
 959
 960     }
 961     else if( i_title != -1 && i_title != p_sys->i_title )
 962
 963     {
 964         return VLC_EGENERIC; /* Couldn't set title */
 965     }
 966
 967     /*
 968      * Chapter selection
 969      */
 970
 971     if( i_chapter >= 0 && i_chapter < p_sys->i_chapters )
 972     {
 973         pgc_id = p_vts->vts_ptt_srpt->title[
 974                      p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
 975         pgn = p_vts->vts_ptt_srpt->title[
 976                   p_sys->i_ttn - 1].ptt[i_chapter].pgn;
 977
 978         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 979
 980         p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
 981         p_sys->i_chapter = i_chapter;
 982         DvdReadFindCell( p_demux );
 983
 984         p_sys->i_title_offset = 0;
 985         for( i = p_sys->i_title_start_cell; i < p_sys->i_cur_cell; i++ )
 986         {
 987             p_sys->i_title_offset += p_pgc->cell_playback[i].last_sector -
 988                 p_pgc->cell_playback[i].first_sector + 1;
 989         }
 990
 991         p_sys->i_pack_len = 0;
 992         p_sys->i_next_vobu = p_sys->i_cur_block =
 993             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
 994
 995         if( p_demux->info.i_seekpoint != i_chapter )
 996         {
 997             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
 998             p_demux->info.i_seekpoint = i_chapter;
 999         }
1000     }
1001     else if( i_chapter != -1 )
1002
1003     {
1004         return VLC_EGENERIC; /* Couldn't set chapter */
1005     }
1006
1007 #undef p_pgc
1008 #undef p_vts
1009 #undef p_vmg
1010
1011     return VLC_SUCCESS;
1012 }
1013
1014 /*****************************************************************************
1015  * DvdReadSeek : Goes to a given position on the stream.
1016  *****************************************************************************
1017  * This one is used by the input and translate chronological position from
1018  * input to logical position on the device.
1019  *****************************************************************************/
1020 static void DvdReadSeek( demux_t *p_demux, int i_block_offset )
1021 {
1022     demux_sys_t *p_sys = p_demux->p_sys;
1023     int i_chapter = 0;
1024     int i_cell = 0;
1025     int i_vobu = 0;
1026     int i_sub_cell = 0;
1027     int i_block;
1028
1029 #define p_pgc p_sys->p_cur_pgc
1030 #define p_vts p_sys->p_vts_file
1031
1032     /* Find cell */
1033     i_block = i_block_offset;
1034     for( i_cell = p_sys->i_title_start_cell;
1035          i_cell <= p_sys->i_title_end_cell; i_cell++ )
1036     {
1037         if( i_block < (int)p_pgc->cell_playback[i_cell].last_sector -
1038             (int)p_pgc->cell_playback[i_cell].first_sector + 1 ) break;
1039
1040         i_block -= (p_pgc->cell_playback[i_cell].last_sector -
1041             p_pgc->cell_playback[i_cell].first_sector + 1);
1042     }
1043     if( i_cell > p_sys->i_title_end_cell )
1044     {
1045         msg_Err( p_demux, "couldn't find cell for block %i", i_block_offset );
1046         return;
1047     }
1048     i_block += p_pgc->cell_playback[i_cell].first_sector;
1049     p_sys->i_title_offset = i_block_offset;
1050
1051     /* Find chapter */
1052     for( i_chapter = 0; i_chapter < p_sys->i_chapters; i_chapter++ )
1053     {
1054         int pgc_id, pgn, i_tmp;
1055
1056         pgc_id = p_vts->vts_ptt_srpt->title[
1057                     p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
1058         pgn = p_vts->vts_ptt_srpt->title[
1059                     p_sys->i_ttn - 1].ptt[i_chapter].pgn;
1060
1061         i_tmp = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc->program_map[pgn-1];
1062
1063         if( i_tmp > i_cell ) break;
1064     }
1065
1066     if( i_chapter < p_sys->i_chapters &&
1067         p_demux->info.i_seekpoint != i_chapter )
1068     {
1069         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1070         p_demux->info.i_seekpoint = i_chapter;
1071     }
1072
1073     /* Find vobu */
1074     while( (int)p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu] <= i_block )
1075     {
1076         i_vobu++;
1077     }
1078
1079     /* Find sub_cell */
1080     while( p_vts->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1081            p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1082     {
1083         i_sub_cell++;
1084     }
1085
1086 #if 1
1087     msg_Dbg( p_demux, "cell %d i_sub_cell %d chapter %d vobu %d "
1088              "cell_sector %d vobu_sector %d sub_cell_sector %d",
1089              i_cell, i_sub_cell, i_chapter, i_vobu,
1090              p_sys->p_cur_pgc->cell_playback[i_cell].first_sector,
1091              p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu],
1092              p_vts->vts_c_adt->cell_adr_table[i_sub_cell - 1].start_sector);
1093 #endif
1094
1095     p_sys->i_cur_block = i_block;
1096     p_sys->i_next_vobu = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu];
1097     p_sys->i_pack_len = p_sys->i_next_vobu - i_block;
1098     p_sys->i_cur_cell = i_cell;
1099     p_sys->i_chapter = i_chapter;
1100     DvdReadFindCell( p_demux );
1101
1102 #undef p_vts
1103 #undef p_pgc
1104
1105     return;
1106 }
1107
1108 /*****************************************************************************
1109  * DvdReadHandleDSI
1110  *****************************************************************************/
1111 static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
1112 {
1113     demux_sys_t *p_sys = p_demux->p_sys;
1114
1115     navRead_DSI( &p_sys->dsi_pack, &p_data[DSI_START_BYTE] );
1116
1117     /*
1118      * Determine where we go next.  These values are the ones we mostly
1119      * care about.
1120      */
1121     p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
1122     p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
1123
1124     /*
1125      * If we're not at the end of this cell, we can determine the next
1126      * VOBU to display using the VOBU_SRI information section of the
1127      * DSI.  Using this value correctly follows the current angle,
1128      * avoiding the doubled scenes in The Matrix, and makes our life
1129      * really happy.
1130      */
1131
1132     p_sys->i_next_vobu = p_sys->i_cur_block +
1133         ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1134
1135     if( p_sys->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL
1136         && p_sys->i_angle > 1 )
1137     {
1138         switch( ( p_sys->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1139         {
1140         case 0x4:
1141             /* Interleaved unit with no angle */
1142             if( p_sys->dsi_pack.sml_pbi.ilvu_sa != 0 )
1143             {
1144                 p_sys->i_next_vobu = p_sys->i_cur_block +
1145                     p_sys->dsi_pack.sml_pbi.ilvu_sa;
1146                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1147             }
1148             else
1149             {
1150                 p_sys->i_next_vobu = p_sys->i_cur_block +
1151                     p_sys->dsi_pack.dsi_gi.vobu_ea + 1;
1152             }
1153             break;
1154         case 0x5:
1155             /* vobu is end of ilvu */
1156             if( p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address )
1157             {
1158                 p_sys->i_next_vobu = p_sys->i_cur_block +
1159                     p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address;
1160                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1161
1162                 break;
1163             }
1164         case 0x6:
1165             /* vobu is beginning of ilvu */
1166         case 0x9:
1167             /* next scr is 0 */
1168         case 0xa:
1169             /* entering interleaved section */
1170         case 0x8:
1171             /* non interleaved cells in interleaved section */
1172         default:
1173             p_sys->i_next_vobu = p_sys->i_cur_block +
1174                 ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1175             break;
1176         }
1177     }
1178     else if( p_sys->dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
1179     {
1180         p_sys->i_cur_cell = p_sys->i_next_cell;
1181         DvdReadFindCell( p_demux );
1182
1183         p_sys->i_next_vobu =
1184             p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1185     }
1186
1187 #if 0
1188     msg_Dbg( p_demux, 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1189              p_sys->dsi_pack.dsi_gi.nv_pck_scr,
1190              p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
1191              p_sys->dsi_pack.dsi_gi.vobu_ea,
1192              p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
1193              p_sys->dsi_pack.dsi_gi.vobu_c_idn );
1194
1195     msg_Dbg( p_demux, 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1196              p_sys->dsi_pack.sml_pbi.category,
1197              p_sys->dsi_pack.sml_pbi.ilvu_ea,
1198              p_sys->dsi_pack.sml_pbi.ilvu_sa,
1199              p_sys->dsi_pack.sml_pbi.size );
1200
1201     msg_Dbg( p_demux, 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1202              p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1203              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
1204              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);
1205 #endif
1206 }
1207
1208 /*****************************************************************************
1209  * DvdReadFindCell
1210  *****************************************************************************/
1211 static void DvdReadFindCell( demux_t *p_demux )
1212 {
1213     demux_sys_t *p_sys = p_demux->p_sys;
1214
1215     pgc_t *p_pgc;
1216     int   pgc_id, pgn;
1217     int   i = 0;
1218
1219 #define cell p_sys->p_cur_pgc->cell_playback
1220
1221     if( cell[p_sys->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1222     {
1223         p_sys->i_cur_cell += p_sys->i_angle - 1;
1224
1225         while( cell[p_sys->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1226         {
1227             i++;
1228         }
1229         p_sys->i_next_cell = p_sys->i_cur_cell + i + 1;
1230     }
1231     else
1232     {
1233         p_sys->i_next_cell = p_sys->i_cur_cell + 1;
1234     }
1235
1236 #undef cell
1237
1238     if( p_sys->i_chapter + 1 >= p_sys->i_chapters ) return;
1239
1240     pgc_id = p_sys->p_vts_file->vts_ptt_srpt->title[
1241                 p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgcn;
1242     pgn = p_sys->p_vts_file->vts_ptt_srpt->title[
1243               p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgn;
1244     p_pgc = p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
1245
1246     if( p_sys->i_cur_cell >= p_pgc->program_map[pgn - 1] - 1 )
1247     {
1248         p_sys->i_chapter++;
1249
1250         if( p_sys->i_chapter < p_sys->i_chapters &&
1251             p_demux->info.i_seekpoint != p_sys->i_chapter )
1252         {
1253             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1254             p_demux->info.i_seekpoint = p_sys->i_chapter;
1255         }
1256     }
1257 }
1258
1259 /*****************************************************************************
1260  * DemuxTitles: get the titles/chapters structure
1261  *****************************************************************************/
1262 static void DemuxTitles( demux_t *p_demux, int *pi_angle )
1263 {
1264     demux_sys_t *p_sys = p_demux->p_sys;
1265     input_title_t *t;
1266     seekpoint_t *s;
1267     int32_t i_titles;
1268     int i;
1269
1270     /* Find out number of titles/chapters */
1271 #define tt_srpt p_sys->p_vmg_file->tt_srpt
1272
1273     i_titles = tt_srpt->nr_of_srpts;
1274     msg_Dbg( p_demux, "number of titles: %d", i_titles );
1275
1276     for( i = 0; i < i_titles; i++ )
1277     {
1278         int32_t i_chapters = 0;
1279         int j;
1280
1281         i_chapters = tt_srpt->title[i].nr_of_ptts;
1282         msg_Dbg( p_demux, "title %d has %d chapters", i, i_chapters );
1283
1284         t = vlc_input_title_New();
1285
1286         for( j = 0; j < __MAX( i_chapters, 1 ); j++ )
1287         {
1288             s = vlc_seekpoint_New();
1289             TAB_APPEND( t->i_seekpoint, t->seekpoint, s );
1290         }
1291
1292         TAB_APPEND( p_sys->i_titles, p_sys->titles, t );
1293     }
1294
1295 #undef tt_srpt
1296 }