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