libhb/dvdnav.c

   1 /* $Id: dvd.c,v 1.12 2005/11/25 15:05:25 titer Exp $
   2
   3    This file is part of the HandBrake source code.
   4    Homepage: <http://handbrake.fr/>.
   5    It may be used under the terms of the GNU General Public License. */
   6
   7 #include "hb.h"
   8 #include "lang.h"
   9 #include "dvd.h"
  10
  11 #include "dvdnav/dvdnav.h"
  12 #include "dvdread/ifo_read.h"
  13 #include "dvdread/ifo_print.h"
  14 #include "dvdread/nav_read.h"
  15
  16 #define DVD_READ_CACHE 1
  17
  18 static char        * hb_dvdnav_name( char * path );
  19 static hb_dvd_t    * hb_dvdnav_init( char * path );
  20 static int           hb_dvdnav_title_count( hb_dvd_t * d );
  21 static hb_title_t  * hb_dvdnav_title_scan( hb_dvd_t * d, int t );
  22 static int           hb_dvdnav_start( hb_dvd_t * d, hb_title_t *title, int chapter );
  23 static void          hb_dvdnav_stop( hb_dvd_t * d );
  24 static int           hb_dvdnav_seek( hb_dvd_t * d, float f );
  25 static int           hb_dvdnav_read( hb_dvd_t * d, hb_buffer_t * b );
  26 static int           hb_dvdnav_chapter( hb_dvd_t * d );
  27 static void          hb_dvdnav_close( hb_dvd_t ** _d );
  28 static int           hb_dvdnav_angle_count( hb_dvd_t * d );
  29 static void          hb_dvdnav_set_angle( hb_dvd_t * e, int angle );
  30
  31 hb_dvd_func_t hb_dvdnav_func =
  32 {
  33     hb_dvdnav_init,
  34     hb_dvdnav_close,
  35     hb_dvdnav_name,
  36     hb_dvdnav_title_count,
  37     hb_dvdnav_title_scan,
  38     hb_dvdnav_start,
  39     hb_dvdnav_stop,
  40     hb_dvdnav_seek,
  41     hb_dvdnav_read,
  42     hb_dvdnav_chapter,
  43     hb_dvdnav_angle_count,
  44     hb_dvdnav_set_angle
  45 };
  46
  47 // there can be at most 999 PGCs per title. round that up to the nearest
  48 // power of two.
  49 #define MAX_PGCN 1024
  50
  51 /***********************************************************************
  52  * Local prototypes
  53  **********************************************************************/
  54 static void PgcWalkInit( uint32_t pgcn_map[MAX_PGCN/32] );
  55 static int FindChapterIndex( hb_list_t * list, int pgcn, int pgn );
  56 static int NextPgcn( ifo_handle_t *ifo, int pgcn, uint32_t pgcn_map[MAX_PGCN/32] );
  57 static int FindNextCell( pgc_t *pgc, int cell_cur );
  58 static int dvdtime2msec( dvd_time_t * );
  59
  60 hb_dvd_func_t * hb_dvdnav_methods( void )
  61 {
  62     return &hb_dvdnav_func;
  63 }
  64
  65 static char * hb_dvdnav_name( char * path )
  66 {
  67     static char name[1024];
  68     unsigned char unused[1024];
  69     dvd_reader_t * reader;
  70
  71     reader = DVDOpen( path );
  72     if( !reader )
  73     {
  74         return NULL;
  75     }
  76
  77     if( DVDUDFVolumeInfo( reader, name, sizeof( name ),
  78                           unused, sizeof( unused ) ) )
  79     {
  80         DVDClose( reader );
  81         return NULL;
  82     }
  83
  84     DVDClose( reader );
  85     return name;
  86 }
  87
  88 /***********************************************************************
  89  * hb_dvdnav_reset
  90  ***********************************************************************
  91  * Once dvdnav has entered the 'stopped' state, it can not be revived
  92  * dvdnav_reset doesn't work because it doesn't remember the path
  93  * So this function re-opens dvdnav
  94  **********************************************************************/
  95 static int hb_dvdnav_reset( hb_dvdnav_t * d )
  96 {
  97     if ( d->dvdnav )
  98         dvdnav_close( d->dvdnav );
  99
 100     /* Open device */
 101     if( dvdnav_open(&d->dvdnav, d->path) != DVDNAV_STATUS_OK )
 102     {
 103         /*
 104          * Not an error, may be a stream - which we'll try in a moment.
 105          */
 106         hb_log( "dvd: not a dvd - trying as a stream/file instead" );
 107         goto fail;
 108     }
 109
 110     if (dvdnav_set_readahead_flag(d->dvdnav, DVD_READ_CACHE) !=
 111         DVDNAV_STATUS_OK)
 112     {
 113         hb_error("Error: dvdnav_set_readahead_flag: %s\n",
 114                  dvdnav_err_to_string(d->dvdnav));
 115         goto fail;
 116     }
 117
 118     /*
 119      ** set the PGC positioning flag to have position information
 120      ** relatively to the whole feature instead of just relatively to the
 121      ** current chapter
 122      **/
 123     if (dvdnav_set_PGC_positioning_flag(d->dvdnav, 1) != DVDNAV_STATUS_OK)
 124     {
 125         hb_error("Error: dvdnav_set_PGC_positioning_flag: %s\n",
 126                  dvdnav_err_to_string(d->dvdnav));
 127         goto fail;
 128     }
 129     return 1;
 130
 131 fail:
 132     if( d->dvdnav ) dvdnav_close( d->dvdnav );
 133     return 0;
 134 }
 135
 136 /***********************************************************************
 137  * hb_dvdnav_init
 138  ***********************************************************************
 139  *
 140  **********************************************************************/
 141 static hb_dvd_t * hb_dvdnav_init( char * path )
 142 {
 143     hb_dvd_t * e;
 144     hb_dvdnav_t * d;
 145     int region_mask;
 146
 147     e = calloc( sizeof( hb_dvd_t ), 1 );
 148     d = &(e->dvdnav);
 149
 150         /* Log DVD drive region code */
 151     if ( hb_dvd_region( path, &region_mask ) == 0 )
 152     {
 153         hb_log( "dvd: Region mask 0x%02x", region_mask );
 154         if ( region_mask == 0xFF )
 155         {
 156             hb_log( "dvd: Warning, DVD device has no region set" );
 157         }
 158     }
 159
 160     /* Open device */
 161     if( dvdnav_open(&d->dvdnav, path) != DVDNAV_STATUS_OK )
 162     {
 163         /*
 164          * Not an error, may be a stream - which we'll try in a moment.
 165          */
 166         hb_log( "dvd: not a dvd - trying as a stream/file instead" );
 167         goto fail;
 168     }
 169
 170     if (dvdnav_set_readahead_flag(d->dvdnav, DVD_READ_CACHE) !=
 171         DVDNAV_STATUS_OK)
 172     {
 173         hb_error("Error: dvdnav_set_readahead_flag: %s\n",
 174                  dvdnav_err_to_string(d->dvdnav));
 175         goto fail;
 176     }
 177
 178     /*
 179      ** set the PGC positioning flag to have position information
 180      ** relatively to the whole feature instead of just relatively to the
 181      ** current chapter
 182      **/
 183     if (dvdnav_set_PGC_positioning_flag(d->dvdnav, 1) != DVDNAV_STATUS_OK)
 184     {
 185         hb_error("Error: dvdnav_set_PGC_positioning_flag: %s\n",
 186                  dvdnav_err_to_string(d->dvdnav));
 187         goto fail;
 188     }
 189
 190     /* Open device */
 191     if( !( d->reader = DVDOpen( path ) ) )
 192     {
 193         /*
 194          * Not an error, may be a stream - which we'll try in a moment.
 195          */
 196         hb_log( "dvd: not a dvd - trying as a stream/file instead" );
 197         goto fail;
 198     }
 199
 200     /* Open main IFO */
 201     if( !( d->vmg = ifoOpen( d->reader, 0 ) ) )
 202     {
 203         hb_error( "dvd: ifoOpen failed" );
 204         goto fail;
 205     }
 206
 207     d->path = strdup( path );
 208
 209     return e;
 210
 211 fail:
 212     if( d->dvdnav ) dvdnav_close( d->dvdnav );
 213     if( d->vmg )    ifoClose( d->vmg );
 214     if( d->reader ) DVDClose( d->reader );
 215     free( e );
 216     return NULL;
 217 }
 218
 219 /***********************************************************************
 220  * hb_dvdnav_title_count
 221  **********************************************************************/
 222 static int hb_dvdnav_title_count( hb_dvd_t * e )
 223 {
 224     int titles = 0;
 225     hb_dvdnav_t * d = &(e->dvdnav);
 226
 227     dvdnav_get_number_of_titles(d->dvdnav, &titles);
 228     return titles;
 229 }
 230
 231 static uint64_t
 232 PttDuration(ifo_handle_t *ifo, int ttn, int pttn, int *blocks, int *last_pgcn)
 233 {
 234     int            pgcn, pgn;
 235     pgc_t        * pgc;
 236     uint64_t       duration = 0;
 237     int            cell_start, cell_end;
 238     int            i;
 239
 240     // Initialize map of visited pgc's to prevent loops
 241     uint32_t pgcn_map[MAX_PGCN/32];
 242     PgcWalkInit( pgcn_map );
 243     pgcn   = ifo->vts_ptt_srpt->title[ttn-1].ptt[pttn-1].pgcn;
 244     pgn   = ifo->vts_ptt_srpt->title[ttn-1].ptt[pttn-1].pgn;
 245     if ( pgcn < 1 || pgcn > ifo->vts_pgcit->nr_of_pgci_srp || pgcn >= MAX_PGCN)
 246     {
 247         hb_error( "invalid PGC ID %d, skipping", pgcn );
 248         return 0;
 249     }
 250
 251     if( pgn <= 0 || pgn > 99 )
 252     {
 253         hb_error( "scan: pgn %d not valid, skipping", pgn );
 254         return 0;
 255     }
 256
 257     *blocks = 0;
 258     do
 259     {
 260         pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc;
 261         if (!pgc)
 262         {
 263             hb_error( "scan: pgc not valid, skipping" );
 264             break;
 265         }
 266         if (pgn > pgc->nr_of_programs)
 267         {
 268             pgn = 1;
 269             continue;
 270         }
 271
 272         duration += 90LL * dvdtime2msec( &pgc->playback_time );
 273
 274         cell_start = pgc->program_map[pgn-1] - 1;
 275         cell_end = pgc->nr_of_cells - 1;
 276         for(i = cell_start; i <= cell_end; i = FindNextCell(pgc, i))
 277         {
 278             *blocks += pgc->cell_playback[i].last_sector + 1 -
 279                 pgc->cell_playback[i].first_sector;
 280         }
 281         *last_pgcn = pgcn;
 282         pgn = 1;
 283     } while((pgcn = NextPgcn(ifo, pgcn, pgcn_map)) != 0);
 284     return duration;
 285 }
 286
 287 /***********************************************************************
 288  * hb_dvdnav_title_scan
 289  **********************************************************************/
 290 static hb_title_t * hb_dvdnav_title_scan( hb_dvd_t * e, int t )
 291 {
 292
 293     hb_dvdnav_t * d = &(e->dvdnav);
 294     hb_title_t   * title;
 295     ifo_handle_t * ifo = NULL;
 296     int            pgcn, pgn, pgcn_end, i, c;
 297     int            title_pgcn;
 298     pgc_t        * pgc;
 299     int            cell_cur;
 300     hb_chapter_t * chapter;
 301     int            count;
 302     uint64_t       duration, longest;
 303     int            longest_pgcn, longest_pgn, longest_pgcn_end;
 304     float          duration_correction;
 305     const char   * name;
 306
 307     hb_log( "scan: scanning title %d", t );
 308
 309     title = hb_title_init( d->path, t );
 310     if (dvdnav_get_title_string(d->dvdnav, &name) == DVDNAV_STATUS_OK)
 311     {
 312         strncpy( title->name, name, sizeof( title->name ) );
 313     }
 314     else
 315     {
 316         char * p_cur, * p_last = d->path;
 317         for( p_cur = d->path; *p_cur; p_cur++ )
 318         {
 319             if( p_cur[0] == '/' && p_cur[1] )
 320             {
 321                 p_last = &p_cur[1];
 322             }
 323         }
 324         snprintf( title->name, sizeof( title->name ), "%s", p_last );
 325     }
 326
 327     /* VTS which our title is in */
 328     title->vts = d->vmg->tt_srpt->title[t-1].title_set_nr;
 329
 330     if ( !title->vts )
 331     {
 332         /* A VTS of 0 means the title wasn't found in the title set */
 333         hb_error("Invalid VTS (title set) number: %i", title->vts);
 334         goto fail;
 335     }
 336
 337     hb_log( "scan: opening IFO for VTS %d", title->vts );
 338     if( !( ifo = ifoOpen( d->reader, title->vts ) ) )
 339     {
 340         hb_error( "scan: ifoOpen failed" );
 341         goto fail;
 342     }
 343
 344     /* ignore titles with bogus cell addresses so we don't abort later
 345      ** in libdvdread. */
 346     for ( i = 0; i < ifo->vts_c_adt->nr_of_vobs; ++i)
 347     {
 348         if( (ifo->vts_c_adt->cell_adr_table[i].start_sector & 0xffffff ) ==
 349             0xffffff )
 350         {
 351             hb_error( "scan: cell_adr_table[%d].start_sector invalid (0x%x) "
 352                       "- skipping title", i,
 353                       ifo->vts_c_adt->cell_adr_table[i].start_sector );
 354             goto fail;
 355         }
 356         if( (ifo->vts_c_adt->cell_adr_table[i].last_sector & 0xffffff ) ==
 357             0xffffff )
 358         {
 359             hb_error( "scan: cell_adr_table[%d].last_sector invalid (0x%x) "
 360                       "- skipping title", i,
 361                       ifo->vts_c_adt->cell_adr_table[i].last_sector );
 362             goto fail;
 363         }
 364         if( ifo->vts_c_adt->cell_adr_table[i].start_sector >=
 365             ifo->vts_c_adt->cell_adr_table[i].last_sector )
 366         {
 367             hb_error( "scan: cell_adr_table[%d].start_sector (0x%x) "
 368                       "is not before last_sector (0x%x) - skipping title", i,
 369                       ifo->vts_c_adt->cell_adr_table[i].start_sector,
 370                       ifo->vts_c_adt->cell_adr_table[i].last_sector );
 371             goto fail;
 372         }
 373     }
 374
 375     if( global_verbosity_level == 3 )
 376     {
 377         ifo_print( d->reader, title->vts );
 378     }
 379
 380     /* Position of the title in the VTS */
 381     title->ttn = d->vmg->tt_srpt->title[t-1].vts_ttn;
 382     if ( title->ttn < 1 || title->ttn > ifo->vts_ptt_srpt->nr_of_srpts )
 383     {
 384         hb_error( "invalid VTS PTT offset %d for title %d, skipping", title->ttn, t );
 385         goto fail;
 386     }
 387
 388     longest = 0LL;
 389     longest_pgcn = -1;
 390     longest_pgn = 1;
 391     longest_pgcn_end = -1;
 392     pgcn_end = -1;
 393     for( i = 0; i < ifo->vts_ptt_srpt->title[title->ttn-1].nr_of_ptts; i++ )
 394     {
 395         int blocks = 0;
 396
 397         duration = PttDuration(ifo, title->ttn, i+1, &blocks, &pgcn_end);
 398         pgcn  = ifo->vts_ptt_srpt->title[title->ttn-1].ptt[i].pgcn;
 399         pgn   = ifo->vts_ptt_srpt->title[title->ttn-1].ptt[i].pgn;
 400         if( duration > longest )
 401         {
 402             longest_pgcn  = pgcn;
 403             longest_pgn   = pgn;
 404             longest_pgcn_end   = pgcn_end;
 405             longest = duration;
 406             title->block_count = blocks;
 407         }
 408         else if (pgcn == longest_pgcn && pgn < longest_pgn)
 409         {
 410             longest_pgn   = pgn;
 411             title->block_count = blocks;
 412         }
 413     }
 414
 415     /* ignore titles under 10 seconds because they're often stills or
 416      * clips with no audio & our preview code doesn't currently handle
 417      * either of these. */
 418     if( longest < 900000LL )
 419     {
 420         hb_log( "scan: ignoring title (too short)" );
 421         goto fail;
 422     }
 423
 424     pgcn       = longest_pgcn;
 425     pgcn_end   = longest_pgcn_end;
 426     pgn        = longest_pgn;;
 427     title_pgcn = pgcn;
 428
 429
 430     /* Get pgc */
 431     if ( pgcn < 1 || pgcn > ifo->vts_pgcit->nr_of_pgci_srp || pgcn >= MAX_PGCN)
 432     {
 433         hb_error( "invalid PGC ID %d for title %d, skipping", pgcn, t );
 434         goto fail;
 435     }
 436
 437     pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc;
 438
 439     hb_log("pgc_id: %d, pgn: %d: pgc: %p", pgcn, pgn, pgc);
 440     if (pgn > pgc->nr_of_programs)
 441     {
 442         hb_error( "invalid PGN %d for title %d, skipping", pgn, t );
 443         goto fail;
 444     }
 445
 446     /* Title start */
 447     title->cell_start = pgc->program_map[pgn-1] - 1;
 448     title->block_start = pgc->cell_playback[title->cell_start].first_sector;
 449
 450     pgc = ifo->vts_pgcit->pgci_srp[pgcn_end-1].pgc;
 451
 452     /* Title end */
 453     title->cell_end = pgc->nr_of_cells - 1;
 454     title->block_end = pgc->cell_playback[title->cell_end].last_sector;
 455
 456     hb_log( "scan: vts=%d, ttn=%d, cells=%d->%d, blocks=%d->%d, "
 457             "%d blocks", title->vts, title->ttn, title->cell_start,
 458             title->cell_end, title->block_start, title->block_end,
 459             title->block_count );
 460
 461     /* Get duration */
 462     title->duration = longest;
 463     title->hours    = title->duration / 90000 / 3600;
 464     title->minutes  = ( ( title->duration / 90000 ) % 3600 ) / 60;
 465     title->seconds  = ( title->duration / 90000 ) % 60;
 466     hb_log( "scan: duration is %02d:%02d:%02d (%"PRId64" ms)",
 467             title->hours, title->minutes, title->seconds,
 468             title->duration / 90 );
 469
 470     /* Detect languages */
 471     for( i = 0; i < ifo->vtsi_mat->nr_of_vts_audio_streams; i++ )
 472     {
 473         hb_audio_t * audio, * audio_tmp;
 474         int          audio_format, lang_code, audio_control,
 475                      position, j;
 476         iso639_lang_t * lang;
 477         int lang_extension = 0;
 478
 479         hb_log( "scan: checking audio %d", i + 1 );
 480
 481         audio = calloc( sizeof( hb_audio_t ), 1 );
 482
 483         audio_format  = ifo->vtsi_mat->vts_audio_attr[i].audio_format;
 484         lang_code     = ifo->vtsi_mat->vts_audio_attr[i].lang_code;
 485         lang_extension = ifo->vtsi_mat->vts_audio_attr[i].code_extension;
 486         audio_control =
 487             ifo->vts_pgcit->pgci_srp[title_pgcn-1].pgc->audio_control[i];
 488
 489         if( !( audio_control & 0x8000 ) )
 490         {
 491             hb_log( "scan: audio channel is not active" );
 492             free( audio );
 493             continue;
 494         }
 495
 496         position = ( audio_control & 0x7F00 ) >> 8;
 497
 498         switch( audio_format )
 499         {
 500             case 0x00:
 501                 audio->id    = ( ( 0x80 + position ) << 8 ) | 0xbd;
 502                 audio->config.in.codec = HB_ACODEC_AC3;
 503                 break;
 504
 505             case 0x02:
 506             case 0x03:
 507                 audio->id    = 0xc0 + position;
 508                 audio->config.in.codec = HB_ACODEC_MPGA;
 509                 break;
 510
 511             case 0x04:
 512                 audio->id    = ( ( 0xa0 + position ) << 8 ) | 0xbd;
 513                 audio->config.in.codec = HB_ACODEC_LPCM;
 514                 break;
 515
 516             case 0x06:
 517                 audio->id    = ( ( 0x88 + position ) << 8 ) | 0xbd;
 518                 audio->config.in.codec = HB_ACODEC_DCA;
 519                 break;
 520
 521             default:
 522                 audio->id    = 0;
 523                 audio->config.in.codec = 0;
 524                 hb_log( "scan: unknown audio codec (%x)",
 525                         audio_format );
 526                 break;
 527         }
 528         if( !audio->id )
 529         {
 530             continue;
 531         }
 532
 533         /* Check for duplicate tracks */
 534         audio_tmp = NULL;
 535         for( j = 0; j < hb_list_count( title->list_audio ); j++ )
 536         {
 537             audio_tmp = hb_list_item( title->list_audio, j );
 538             if( audio->id == audio_tmp->id )
 539             {
 540                 break;
 541             }
 542             audio_tmp = NULL;
 543         }
 544         if( audio_tmp )
 545         {
 546             hb_log( "scan: duplicate audio track" );
 547             free( audio );
 548             continue;
 549         }
 550
 551         audio->config.lang.type = lang_extension;
 552
 553         lang = lang_for_code( ifo->vtsi_mat->vts_audio_attr[i].lang_code );
 554
 555         snprintf( audio->config.lang.description, sizeof( audio->config.lang.description ), "%s (%s)",
 556             strlen(lang->native_name) ? lang->native_name : lang->eng_name,
 557             audio->config.in.codec == HB_ACODEC_AC3 ? "AC3" : ( audio->config.in.codec ==
 558                 HB_ACODEC_DCA ? "DTS" : ( audio->config.in.codec ==
 559                 HB_ACODEC_MPGA ? "MPEG" : "LPCM" ) ) );
 560         snprintf( audio->config.lang.simple, sizeof( audio->config.lang.simple ), "%s",
 561                   strlen(lang->native_name) ? lang->native_name : lang->eng_name );
 562         snprintf( audio->config.lang.iso639_2, sizeof( audio->config.lang.iso639_2 ), "%s",
 563                   lang->iso639_2);
 564
 565         switch( lang_extension )
 566         {
 567         case 0:
 568         case 1:
 569             break;
 570         case 2:
 571             strcat( audio->config.lang.description, " (Visually Impaired)" );
 572             break;
 573         case 3:
 574             strcat( audio->config.lang.description, " (Director's Commentary 1)" );
 575             break;
 576         case 4:
 577             strcat( audio->config.lang.description, " (Director's Commentary 2)" );
 578             break;
 579         default:
 580             break;
 581         }
 582
 583         hb_log( "scan: id=%x, lang=%s, 3cc=%s ext=%i", audio->id,
 584                 audio->config.lang.description, audio->config.lang.iso639_2,
 585                 lang_extension );
 586
 587         audio->config.in.track = i;
 588         hb_list_add( title->list_audio, audio );
 589     }
 590
 591     memcpy( title->palette,
 592             ifo->vts_pgcit->pgci_srp[title_pgcn-1].pgc->palette,
 593             16 * sizeof( uint32_t ) );
 594
 595     /* Check for subtitles */
 596     for( i = 0; i < ifo->vtsi_mat->nr_of_vts_subp_streams; i++ )
 597     {
 598         hb_subtitle_t * subtitle;
 599         int spu_control;
 600         int position;
 601         iso639_lang_t * lang;
 602         int lang_extension = 0;
 603
 604         hb_log( "scan: checking subtitle %d", i + 1 );
 605
 606         spu_control =
 607             ifo->vts_pgcit->pgci_srp[title_pgcn-1].pgc->subp_control[i];
 608
 609         if( !( spu_control & 0x80000000 ) )
 610         {
 611             hb_log( "scan: subtitle channel is not active" );
 612             continue;
 613         }
 614
 615         if( ifo->vtsi_mat->vts_video_attr.display_aspect_ratio )
 616         {
 617             switch( ifo->vtsi_mat->vts_video_attr.permitted_df )
 618             {
 619                 case 1:
 620                     position = spu_control & 0xFF;
 621                     break;
 622                 case 2:
 623                     position = ( spu_control >> 8 ) & 0xFF;
 624                     break;
 625                 default:
 626                     position = ( spu_control >> 16 ) & 0xFF;
 627             }
 628         }
 629         else
 630         {
 631             position = ( spu_control >> 24 ) & 0x7F;
 632         }
 633
 634         lang_extension = ifo->vtsi_mat->vts_subp_attr[i].code_extension;
 635
 636         lang = lang_for_code( ifo->vtsi_mat->vts_subp_attr[i].lang_code );
 637
 638         subtitle = calloc( sizeof( hb_subtitle_t ), 1 );
 639         subtitle->track = i+1;
 640         subtitle->id = ( ( 0x20 + position ) << 8 ) | 0xbd;
 641         snprintf( subtitle->lang, sizeof( subtitle->lang ), "%s",
 642              strlen(lang->native_name) ? lang->native_name : lang->eng_name);
 643         snprintf( subtitle->iso639_2, sizeof( subtitle->iso639_2 ), "%s",
 644                   lang->iso639_2);
 645         subtitle->format = PICTURESUB;
 646         subtitle->source = VOBSUB;
 647         subtitle->config.dest   = RENDERSUB;  // By default render (burn-in) the VOBSUB.
 648
 649         subtitle->type = lang_extension;
 650
 651         switch( lang_extension )
 652         {
 653         case 0:
 654             break;
 655         case 1:
 656             break;
 657         case 2:
 658             strcat( subtitle->lang, " (Caption with bigger size character)");
 659             break;
 660         case 3:
 661             strcat( subtitle->lang, " (Caption for Children)");
 662             break;
 663         case 4:
 664             break;
 665         case 5:
 666             strcat( subtitle->lang, " (Closed Caption)");
 667             break;
 668         case 6:
 669             strcat( subtitle->lang, " (Closed Caption with bigger size character)");
 670             break;
 671         case 7:
 672             strcat( subtitle->lang, " (Closed Caption for Children)");
 673             break;
 674         case 8:
 675             break;
 676         case 9:
 677             strcat( subtitle->lang, " (Forced Caption)");
 678             break;
 679         case 10:
 680             break;
 681         case 11:
 682             break;
 683         case 12:
 684             break;
 685         case 13:
 686             strcat( subtitle->lang, " (Director's Commentary)");
 687             break;
 688         case 14:
 689             strcat( subtitle->lang, " (Director's Commentary with bigger size character)");
 690             break;
 691         case 15:
 692             strcat( subtitle->lang, " (Director's Commentary for Children)");
 693         default:
 694             break;
 695         }
 696
 697         hb_log( "scan: id=%x, lang=%s, 3cc=%s", subtitle->id,
 698                 subtitle->lang, subtitle->iso639_2 );
 699
 700         hb_list_add( title->list_subtitle, subtitle );
 701     }
 702
 703     /* Chapters */
 704     uint32_t pgcn_map[MAX_PGCN/32];
 705     PgcWalkInit( pgcn_map );
 706     c = 0;
 707     do
 708     {
 709         pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc;
 710
 711         for (i = pgn; i <= pgc->nr_of_programs; i++)
 712         {
 713             chapter = calloc( sizeof( hb_chapter_t ), 1 );
 714
 715             chapter->index = c + 1;
 716             chapter->pgcn = pgcn;
 717             chapter->pgn = i;
 718             hb_list_add( title->list_chapter, chapter );
 719             c++;
 720         }
 721
 722         pgn = 1;
 723     } while ((pgcn = NextPgcn(ifo, pgcn, pgcn_map)) != 0);
 724
 725     hb_log( "scan: title %d has %d chapters", t, c );
 726
 727     duration = 0;
 728     count = hb_list_count( title->list_chapter );
 729     for (i = 0; i < count; i++)
 730     {
 731         chapter = hb_list_item( title->list_chapter, i );
 732
 733         pgcn = chapter->pgcn;
 734         pgn = chapter->pgn;
 735         pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc;
 736
 737         /* Start cell */
 738         chapter->cell_start  = pgc->program_map[pgn-1] - 1;
 739         chapter->block_start = pgc->cell_playback[chapter->cell_start].first_sector;
 740         // if there are no more programs in this pgc, the end cell is the
 741         // last cell. Otherwise it's the cell before the start cell of the
 742         // next program.
 743         if ( pgn == pgc->nr_of_programs )
 744         {
 745             chapter->cell_end = pgc->nr_of_cells - 1;
 746         }
 747         else
 748         {
 749             chapter->cell_end = pgc->program_map[pgn] - 2;;
 750         }
 751         chapter->block_end = pgc->cell_playback[chapter->cell_end].last_sector;
 752
 753         /* Block count, duration */
 754         chapter->block_count = 0;
 755         chapter->duration = 0;
 756
 757         cell_cur = chapter->cell_start;
 758         while( cell_cur <= chapter->cell_end )
 759         {
 760 #define cp pgc->cell_playback[cell_cur]
 761             chapter->block_count += cp.last_sector + 1 - cp.first_sector;
 762             chapter->duration += 90LL * dvdtime2msec( &cp.playback_time );
 763 #undef cp
 764             cell_cur = FindNextCell( pgc, cell_cur );
 765         }
 766         duration += chapter->duration;
 767     }
 768
 769     /* The durations we get for chapters aren't precise. Scale them so
 770        the total matches the title duration */
 771     duration_correction = (float) title->duration / (float) duration;
 772     for( i = 0; i < hb_list_count( title->list_chapter ); i++ )
 773     {
 774         int seconds;
 775         chapter            = hb_list_item( title->list_chapter, i );
 776         chapter->duration  = duration_correction * chapter->duration;
 777         seconds            = ( chapter->duration + 45000 ) / 90000;
 778         chapter->hours     = seconds / 3600;
 779         chapter->minutes   = ( seconds % 3600 ) / 60;
 780         chapter->seconds   = seconds % 60;
 781
 782         hb_log( "scan: chap %d c=%d->%d, b=%d->%d (%d), %"PRId64" ms",
 783                 chapter->index, chapter->cell_start, chapter->cell_end,
 784                 chapter->block_start, chapter->block_end,
 785                 chapter->block_count, chapter->duration / 90 );
 786     }
 787
 788     /* Get aspect. We don't get width/height/rate infos here as
 789        they tend to be wrong */
 790     switch( ifo->vtsi_mat->vts_video_attr.display_aspect_ratio )
 791     {
 792         case 0:
 793             title->container_aspect = 4. / 3.;
 794             break;
 795         case 3:
 796             title->container_aspect = 16. / 9.;
 797             break;
 798         default:
 799             hb_log( "scan: unknown aspect" );
 800             goto fail;
 801     }
 802
 803     hb_log( "scan: aspect = %g", title->aspect );
 804
 805     /* This title is ok so far */
 806     goto cleanup;
 807
 808 fail:
 809     hb_list_close( &title->list_audio );
 810     free( title );
 811     title = NULL;
 812
 813 cleanup:
 814     if( ifo ) ifoClose( ifo );
 815
 816     return title;
 817 }
 818
 819 /***********************************************************************
 820  * hb_dvdnav_start
 821  ***********************************************************************
 822  * Title and chapter start at 1
 823  **********************************************************************/
 824 static int hb_dvdnav_start( hb_dvd_t * e, hb_title_t *title, int c )
 825 {
 826     hb_dvdnav_t * d = &(e->dvdnav);
 827     int t = title->index;
 828     hb_chapter_t *chapter;
 829     dvdnav_status_t result;
 830
 831     d->title_block_count = title->block_count;
 832     d->list_chapter = title->list_chapter;
 833
 834     if ( d->stopped && !hb_dvdnav_reset(d) )
 835     {
 836         return 0;
 837     }
 838     chapter = hb_list_item( title->list_chapter, c - 1);
 839     if (chapter != NULL)
 840         result = dvdnav_program_play(d->dvdnav, t, chapter->pgcn, chapter->pgn);
 841     else
 842         result = dvdnav_part_play(d->dvdnav, t, 1);
 843     if (result != DVDNAV_STATUS_OK)
 844     {
 845         hb_error( "dvd: dvdnav_*_play failed - %s",
 846                   dvdnav_err_to_string(d->dvdnav) );
 847         return 0;
 848     }
 849     d->title = t;
 850     d->stopped = 0;
 851     d->chapter = 0;
 852     return 1;
 853 }
 854
 855 /***********************************************************************
 856  * hb_dvdnav_stop
 857  ***********************************************************************
 858  *
 859  **********************************************************************/
 860 static void hb_dvdnav_stop( hb_dvd_t * e )
 861 {
 862 }
 863
 864 /***********************************************************************
 865  * hb_dvdnav_seek
 866  ***********************************************************************
 867  *
 868  **********************************************************************/
 869 static int hb_dvdnav_seek( hb_dvd_t * e, float f )
 870 {
 871     hb_dvdnav_t * d = &(e->dvdnav);
 872     uint64_t sector = f * d->title_block_count;
 873     int result, event, len;
 874     uint8_t buf[HB_DVD_READ_BUFFER_SIZE];
 875     int done = 0, ii;
 876
 877     if (d->stopped)
 878     {
 879         return 0;
 880     }
 881
 882     // XXX the current version of libdvdnav can't seek outside the current
 883     // PGC. Check if the place we're seeking to is in a different
 884     // PGC. Position there & adjust the offset if so.
 885     hb_chapter_t *pgc_change = hb_list_item(d->list_chapter, 0 );
 886     for ( ii = 0; ii < hb_list_count( d->list_chapter ); ++ii )
 887     {
 888         hb_chapter_t *chapter = hb_list_item( d->list_chapter, ii );
 889
 890         if ( chapter->pgcn != pgc_change->pgcn )
 891         {
 892             // this chapter's in a different pgc from the previous - note the
 893             // change so we can make sector offset's be pgc relative.
 894             pgc_change = chapter;
 895         }
 896         if ( chapter->block_start <= sector && sector <= chapter->block_end )
 897         {
 898             // this chapter contains the sector we want - see if it's in a
 899             // different pgc than the one we're currently in.
 900             int32_t title, pgcn, pgn;
 901             if (dvdnav_current_title_program( d->dvdnav, &title, &pgcn, &pgn ) != DVDNAV_STATUS_OK)
 902                 hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav));
 903             if ( d->title != title || chapter->pgcn != pgcn )
 904             {
 905                 // this chapter is in a different pgc - switch to it.
 906                 if (dvdnav_program_play(d->dvdnav, d->title, chapter->pgcn, chapter->pgn) != DVDNAV_STATUS_OK)
 907                     hb_log("dvdnav prog play err: %s", dvdnav_err_to_string(d->dvdnav));
 908             }
 909             // seek sectors are pgc-relative so remove the pgc start sector.
 910             sector -= pgc_change->block_start;
 911             break;
 912         }
 913     }
 914
 915     // dvdnav will not let you seek or poll current position
 916     // till it reaches a certain point in parsing.  so we
 917     // have to get blocks until we reach a cell
 918     // Put an arbitrary limit of 100 blocks on how long we search
 919     for (ii = 0; ii < 100 && !done; ii++)
 920     {
 921         result = dvdnav_get_next_block( d->dvdnav, buf, &event, &len );
 922         if ( result == DVDNAV_STATUS_ERR )
 923         {
 924             hb_log("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav));
 925             return 0;
 926         }
 927         switch ( event )
 928         {
 929         case DVDNAV_BLOCK_OK:
 930         case DVDNAV_CELL_CHANGE:
 931             done = 1;
 932             break;
 933
 934         case DVDNAV_STILL_FRAME:
 935             dvdnav_still_skip( d->dvdnav );
 936             break;
 937
 938         case DVDNAV_WAIT:
 939             dvdnav_wait_skip( d->dvdnav );
 940             break;
 941
 942         case DVDNAV_STOP:
 943             hb_log("dvdnav: stop encountered during seek");
 944             d->stopped = 1;
 945             return 0;
 946
 947         case DVDNAV_HOP_CHANNEL:
 948         case DVDNAV_NAV_PACKET:
 949         case DVDNAV_VTS_CHANGE:
 950         case DVDNAV_HIGHLIGHT:
 951         case DVDNAV_AUDIO_STREAM_CHANGE:
 952         case DVDNAV_SPU_STREAM_CHANGE:
 953         case DVDNAV_SPU_CLUT_CHANGE:
 954         case DVDNAV_NOP:
 955         default:
 956             break;
 957         }
 958     }
 959
 960     if (dvdnav_sector_search(d->dvdnav, sector, SEEK_SET) != DVDNAV_STATUS_OK)
 961     {
 962         hb_error( "dvd: dvdnav_sector_search failed - %s",
 963                   dvdnav_err_to_string(d->dvdnav) );
 964         return 0;
 965     }
 966     return 1;
 967 }
 968
 969 /***********************************************************************
 970  * hb_dvdnav_read
 971  ***********************************************************************
 972  *
 973  **********************************************************************/
 974 static int hb_dvdnav_read( hb_dvd_t * e, hb_buffer_t * b )
 975 {
 976     hb_dvdnav_t * d = &(e->dvdnav);
 977     int result, event, len;
 978     int chapter = 0;
 979     int error_count = 0;
 980
 981     while ( 1 )
 982     {
 983         if (d->stopped)
 984         {
 985             return 0;
 986         }
 987         result = dvdnav_get_next_block( d->dvdnav, b->data, &event, &len );
 988         if ( result == DVDNAV_STATUS_ERR )
 989         {
 990             hb_log("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav));
 991             if (dvdnav_sector_search(d->dvdnav, 1, SEEK_CUR) != DVDNAV_STATUS_OK)
 992             {
 993                 hb_error( "dvd: dvdnav_sector_search failed - %s",
 994                         dvdnav_err_to_string(d->dvdnav) );
 995                 return 0;
 996             }
 997             error_count++;
 998             if (error_count > 10)
 999             {
1000                 hb_log("dvdnav: Error, too many consecutive read errors");
1001                 return 0;
1002             }
1003             continue;
1004         }
1005         error_count = 0;
1006         switch ( event )
1007         {
1008         case DVDNAV_BLOCK_OK:
1009             // We have received a regular block of the currently playing
1010             // MPEG stream.
1011
1012             // The muxers expect to only get chapter 2 and above
1013             // They write chapter 1 when chapter 2 is detected.
1014             if (chapter > 1)
1015                 b->new_chap = chapter;
1016             chapter = 0;
1017             return 1;
1018
1019         case DVDNAV_NOP:
1020             /*
1021             * Nothing to do here.
1022             */
1023             break;
1024
1025         case DVDNAV_STILL_FRAME:
1026             /*
1027             * We have reached a still frame. A real player application
1028             * would wait the amount of time specified by the still's
1029             * length while still handling user input to make menus and
1030             * other interactive stills work. A length of 0xff means an
1031             * indefinite still which has to be skipped indirectly by some
1032             * user interaction.
1033             */
1034             dvdnav_still_skip( d->dvdnav );
1035             break;
1036
1037         case DVDNAV_WAIT:
1038             /*
1039             * We have reached a point in DVD playback, where timing is
1040             * critical. Player application with internal fifos can
1041             * introduce state inconsistencies, because libdvdnav is
1042             * always the fifo's length ahead in the stream compared to
1043             * what the application sees. Such applications should wait
1044             * until their fifos are empty when they receive this type of
1045             * event.
1046             */
1047             dvdnav_wait_skip( d->dvdnav );
1048             break;
1049
1050         case DVDNAV_SPU_CLUT_CHANGE:
1051             /*
1052             * Player applications should pass the new colour lookup table
1053             * to their SPU decoder
1054             */
1055             break;
1056
1057         case DVDNAV_SPU_STREAM_CHANGE:
1058             /*
1059             * Player applications should inform their SPU decoder to
1060             * switch channels
1061             */
1062             break;
1063
1064         case DVDNAV_AUDIO_STREAM_CHANGE:
1065             /*
1066             * Player applications should inform their audio decoder to
1067             * switch channels
1068             */
1069             break;
1070
1071         case DVDNAV_HIGHLIGHT:
1072             /*
1073             * Player applications should inform their overlay engine to
1074             * highlight the given button
1075             */
1076             break;
1077
1078         case DVDNAV_VTS_CHANGE:
1079             /*
1080             * Some status information like video aspect and video scale
1081             * permissions do not change inside a VTS. Therefore this
1082             * event can be used to query such information only when
1083             * necessary and update the decoding/displaying accordingly.
1084             */
1085             break;
1086
1087         case DVDNAV_CELL_CHANGE:
1088             /*
1089             * Some status information like the current Title and Part
1090             * numbers do not change inside a cell. Therefore this event
1091             * can be used to query such information only when necessary
1092             * and update the decoding/displaying accordingly.
1093             */
1094             {
1095                 int tt = 0, pgcn = 0, pgn = 0, c;
1096
1097                 dvdnav_current_title_program(d->dvdnav, &tt, &pgcn, &pgn);
1098                 if (tt != d->title)
1099                 {
1100                     // Transition to another title signals that we are done.
1101                     return 0;
1102                 }
1103                 c = FindChapterIndex(d->list_chapter, pgcn, pgn);
1104                 if (c != d->chapter)
1105                 {
1106                     if (c < d->chapter)
1107                     {
1108                         // Some titles end with a 'link' back to the beginning so
1109                         // a transition to an earlier chapter means we're done.
1110                         return 0;
1111                     }
1112                     chapter = d->chapter = c;
1113                 }
1114             }
1115             break;
1116
1117         case DVDNAV_NAV_PACKET:
1118             /*
1119             * A NAV packet provides PTS discontinuity information, angle
1120             * linking information and button definitions for DVD menus.
1121             * Angles are handled completely inside libdvdnav. For the
1122             * menus to work, the NAV packet information has to be passed
1123             * to the overlay engine of the player so that it knows the
1124             * dimensions of the button areas.
1125             */
1126
1127             // mpegdemux expects to get these.  I don't think it does
1128             // anything useful with them however.
1129
1130             // The muxers expect to only get chapter 2 and above
1131             // They write chapter 1 when chapter 2 is detected.
1132             if (chapter > 1)
1133                 b->new_chap = chapter;
1134             chapter = 0;
1135             return 1;
1136
1137             break;
1138
1139         case DVDNAV_HOP_CHANNEL:
1140             /*
1141             * This event is issued whenever a non-seamless operation has
1142             * been executed. Applications with fifos should drop the
1143             * fifos content to speed up responsiveness.
1144             */
1145             break;
1146
1147         case DVDNAV_STOP:
1148             /*
1149             * Playback should end here.
1150             */
1151             d->stopped = 1;
1152             return 0;
1153
1154         default:
1155             break;
1156         }
1157     }
1158     return 0;
1159 }
1160
1161 /***********************************************************************
1162  * hb_dvdnav_chapter
1163  ***********************************************************************
1164  * Returns in which chapter the next block to be read is.
1165  * Chapter numbers start at 1.
1166  **********************************************************************/
1167 static int hb_dvdnav_chapter( hb_dvd_t * e )
1168 {
1169     hb_dvdnav_t * d = &(e->dvdnav);
1170     int32_t t, pgcn, pgn;
1171     int32_t c;
1172
1173     if (dvdnav_current_title_program(d->dvdnav, &t, &pgcn, &pgn) != DVDNAV_STATUS_OK)
1174     {
1175         return -1;
1176     }
1177     c = FindChapterIndex( d->list_chapter, pgcn, pgn );
1178     return c;
1179 }
1180
1181 /***********************************************************************
1182  * hb_dvdnav_close
1183  ***********************************************************************
1184  * Closes and frees everything
1185  **********************************************************************/
1186 static void hb_dvdnav_close( hb_dvd_t ** _d )
1187 {
1188     hb_dvdnav_t * d = &((*_d)->dvdnav);
1189
1190     if( d->dvdnav ) dvdnav_close( d->dvdnav );
1191     if( d->vmg ) ifoClose( d->vmg );
1192     if( d->reader ) DVDClose( d->reader );
1193
1194     free( d );
1195     *_d = NULL;
1196 }
1197
1198 /***********************************************************************
1199  * hb_dvdnav_angle_count
1200  ***********************************************************************
1201  * Returns the number of angles supported.
1202  **********************************************************************/
1203 static int hb_dvdnav_angle_count( hb_dvd_t * e )
1204 {
1205     hb_dvdnav_t * d = &(e->dvdnav);
1206     int current, angle_count;
1207
1208     if (dvdnav_get_angle_info( d->dvdnav, &current, &angle_count) != DVDNAV_STATUS_OK)
1209     {
1210         hb_log("dvdnav_get_angle_info %s", dvdnav_err_to_string(d->dvdnav));
1211         angle_count = 1;
1212     }
1213     return angle_count;
1214 }
1215
1216 /***********************************************************************
1217  * hb_dvdnav_set_angle
1218  ***********************************************************************
1219  * Sets the angle to read
1220  **********************************************************************/
1221 static void hb_dvdnav_set_angle( hb_dvd_t * e, int angle )
1222 {
1223     hb_dvdnav_t * d = &(e->dvdnav);
1224
1225     if (dvdnav_angle_change( d->dvdnav, angle) != DVDNAV_STATUS_OK)
1226     {
1227         hb_log("dvdnav_angle_change %s", dvdnav_err_to_string(d->dvdnav));
1228     }
1229 }
1230
1231 /***********************************************************************
1232  * FindChapterIndex
1233  ***********************************************************************
1234  * Assumes pgc and cell_cur are correctly set, and sets cell_next to the
1235  * cell to be read when we will be done with cell_cur.
1236  **********************************************************************/
1237 static int FindChapterIndex( hb_list_t * list, int pgcn, int pgn )
1238 {
1239     int count, ii;
1240     hb_chapter_t *chapter;
1241
1242     count = hb_list_count( list );
1243     for (ii = 0; ii < count; ii++)
1244     {
1245         chapter = hb_list_item( list, ii );
1246         if (chapter->pgcn == pgcn && chapter->pgn == pgn)
1247             return chapter->index;
1248     }
1249     return 0;
1250 }
1251
1252 /***********************************************************************
1253  * FindNextCell
1254  ***********************************************************************
1255  * Assumes pgc and cell_cur are correctly set, and sets cell_next to the
1256  * cell to be read when we will be done with cell_cur.
1257  **********************************************************************/
1258 static int FindNextCell( pgc_t *pgc, int cell_cur )
1259 {
1260     int i = 0;
1261     int cell_next;
1262
1263     if( pgc->cell_playback[cell_cur].block_type ==
1264             BLOCK_TYPE_ANGLE_BLOCK )
1265     {
1266
1267         while( pgc->cell_playback[cell_cur+i].block_mode !=
1268                    BLOCK_MODE_LAST_CELL )
1269         {
1270              i++;
1271         }
1272         cell_next = cell_cur + i + 1;
1273         hb_log( "dvd: Skipping multi-angle cells %d-%d",
1274                 cell_cur,
1275                 cell_next - 1 );
1276     }
1277     else
1278     {
1279         cell_next = cell_cur + 1;
1280     }
1281     return cell_next;
1282 }
1283
1284 /***********************************************************************
1285  * NextPgcn
1286  ***********************************************************************
1287  * Assumes pgc and cell_cur are correctly set, and sets cell_next to the
1288  * cell to be read when we will be done with cell_cur.
1289  * Since pg chains can be circularly linked (either from a read error or
1290  * deliberately) pgcn_map tracks program chains we've already seen.
1291  **********************************************************************/
1292 static int NextPgcn( ifo_handle_t *ifo, int pgcn, uint32_t pgcn_map[MAX_PGCN/32] )
1293 {
1294     int next_pgcn;
1295     pgc_t *pgc;
1296
1297     pgcn_map[pgcn >> 5] |= (1 << (pgcn & 31));
1298
1299     pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc;
1300     next_pgcn = pgc->next_pgc_nr;
1301     if ( next_pgcn < 1 || next_pgcn >= MAX_PGCN || next_pgcn > ifo->vts_pgcit->nr_of_pgci_srp )
1302         return 0;
1303
1304     return pgcn_map[next_pgcn >> 5] & (1 << (next_pgcn & 31))? 0 : next_pgcn;
1305 }
1306
1307 /***********************************************************************
1308  * PgcWalkInit
1309  ***********************************************************************
1310  * Pgc links can loop. I track which have been visited in a bit vector
1311  * Initialize the bit vector to empty.
1312  **********************************************************************/
1313 static void PgcWalkInit( uint32_t pgcn_map[MAX_PGCN/32] )
1314 {
1315     memset(pgcn_map, 0, sizeof(pgcn_map) );
1316 }
1317
1318 /***********************************************************************
1319  * dvdtime2msec
1320  ***********************************************************************
1321  * From lsdvd
1322  **********************************************************************/
1323 static int dvdtime2msec(dvd_time_t * dt)
1324 {
1325     double frames_per_s[4] = {-1.0, 25.00, -1.0, 29.97};
1326     double fps = frames_per_s[(dt->frame_u & 0xc0) >> 6];
1327     long   ms;
1328     ms  = (((dt->hour &   0xf0) >> 3) * 5 + (dt->hour   & 0x0f)) * 3600000;
1329     ms += (((dt->minute & 0xf0) >> 3) * 5 + (dt->minute & 0x0f)) * 60000;
1330     ms += (((dt->second & 0xf0) >> 3) * 5 + (dt->second & 0x0f)) * 1000;
1331
1332     if( fps > 0 )
1333     {
1334         ms += ((dt->frame_u & 0x30) >> 3) * 5 +
1335               (dt->frame_u & 0x0f) * 1000.0 / fps;
1336     }
1337
1338     return ms;
1339 }