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 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: St�hane Borel <stef@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <stdio.h>
  29 #include <stdlib.h>                                      /* malloc(), free() */
  30 #include <string.h>                                              /* strdup() */
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc/input.h>
  34
  35 #include "iso_lang.h"
  36
  37 #include "../demux/ps.h"
  38
  39 #ifdef HAVE_UNISTD_H
  40 #   include <unistd.h>
  41 #endif
  42
  43 #include <fcntl.h>
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #include <string.h>
  47
  48 #include <dvdread/dvd_reader.h>
  49 #include <dvdread/ifo_types.h>
  50 #include <dvdread/ifo_read.h>
  51 #include <dvdread/nav_read.h>
  52 #include <dvdread/nav_print.h>
  53
  54 /*****************************************************************************
  55  * Module descriptor
  56  *****************************************************************************/
  57 #define ANGLE_TEXT N_("DVD angle")
  58 #define ANGLE_LONGTEXT N_( \
  59     "Allows you to select the default DVD angle." )
  60
  61 #define CACHING_TEXT N_("Caching value in ms")
  62 #define CACHING_LONGTEXT N_( \
  63     "Allows you to modify the default caching value for DVDread streams. " \
  64     "This value should be set in millisecond units." )
  65
  66 #define CSSMETHOD_TEXT N_("Method used by libdvdcss for decryption")
  67 #define CSSMETHOD_LONGTEXT N_( \
  68     "Set the method used by libdvdcss for key decryption.\n" \
  69     "title: decrypted title key is guessed from the encrypted sectors of " \
  70            "the stream. Thus it should work with a file as well as the " \
  71            "DVD device. But it sometimes takes much time to decrypt a title " \
  72            "key and may even fail. With this method, the key is only checked "\
  73            "at the beginning of each title, so it won't work if the key " \
  74            "changes in the middle of a title.\n" \
  75     "disc: the disc key is first cracked, then all title keys can be " \
  76            "decrypted instantly, which allows us to check them often.\n" \
  77     "key: the same as \"disc\" if you don't have a file with player keys " \
  78            "at compilation time. If you do, the decryption of the disc key " \
  79            "will be faster with this method. It is the one that was used by " \
  80            "libcss.\n" \
  81     "The default method is: key.")
  82
  83 static char *psz_css_list[] = { "title", "disc", "key" };
  84 static char *psz_css_list_text[] = { N_("title"), N_("Disc"), N_("Key") };
  85
  86 static int  Open ( vlc_object_t * );
  87 static void Close( vlc_object_t * );
  88
  89 vlc_module_begin();
  90     set_shortname( _("DVD without menus") );
  91     set_description( _("DVDRead Input (DVD without menu support)") );
  92     set_category( CAT_INPUT );
  93     set_subcategory( SUBCAT_INPUT_ACCESS );
  94     add_integer( "dvdread-angle", 1, NULL, ANGLE_TEXT,
  95         ANGLE_LONGTEXT, VLC_FALSE );
  96     add_integer( "dvdread-caching", DEFAULT_PTS_DELAY / 1000, NULL,
  97         CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
  98     add_string( "dvdread-css-method", NULL, NULL, CSSMETHOD_TEXT,
  99                 CSSMETHOD_LONGTEXT, VLC_TRUE );
 100         change_string_list( psz_css_list, psz_css_list_text, 0 );
 101     set_capability( "access_demux", 0 );
 102     add_shortcut( "dvd" );
 103     add_shortcut( "dvdread" );
 104     add_shortcut( "dvdsimple" );
 105     set_callbacks( Open, Close );
 106 vlc_module_end();
 107
 108 /* how many blocks DVDRead will read in each loop */
 109 #define DVD_BLOCK_READ_ONCE 4
 110
 111 /*****************************************************************************
 112  * Local prototypes
 113  *****************************************************************************/
 114
 115 struct demux_sys_t
 116 {
 117     /* DVDRead state */
 118     dvd_reader_t *p_dvdread;
 119     dvd_file_t   *p_title;
 120
 121     ifo_handle_t *p_vmg_file;
 122     ifo_handle_t *p_vts_file;
 123
 124     int i_title;
 125     int i_chapter, i_chapters;
 126     int i_angle, i_angles;
 127
 128     tt_srpt_t    *p_tt_srpt;
 129     pgc_t        *p_cur_pgc;
 130     dsi_t        dsi_pack;
 131     int          i_ttn;
 132
 133     int i_pack_len;
 134     int i_cur_block;
 135     int i_next_vobu;
 136
 137     int i_mux_rate;
 138
 139     /* Current title start/end blocks */
 140     int i_title_start_block;
 141     int i_title_end_block;
 142     int i_title_blocks;
 143     int i_title_offset;
 144     mtime_t i_title_cur_time;
 145
 146     int i_title_start_cell;
 147     int i_title_end_cell;
 148     int i_cur_cell;
 149     int i_next_cell;
 150     mtime_t i_cell_cur_time;
 151     mtime_t i_cell_duration;
 152
 153     /* Track */
 154     ps_track_t    tk[PS_TK_COUNT];
 155
 156     int           i_titles;
 157     input_title_t **titles;
 158
 159     /* Video */
 160     int i_aspect;
 161
 162     /* SPU */
 163     uint32_t clut[16];
 164 };
 165
 166 static int Control   ( demux_t *, int, va_list );
 167 static int Demux     ( demux_t * );
 168 static int DemuxBlock( demux_t *, uint8_t *, int );
 169
 170 static void DemuxTitles( demux_t *, int * );
 171 static void ESNew( demux_t *, int, int );
 172
 173 static int  DvdReadSetArea  ( demux_t *, int, int, int );
 174 static void DvdReadSeek     ( demux_t *, int );
 175 static void DvdReadHandleDSI( demux_t *, uint8_t * );
 176 static void DvdReadFindCell ( demux_t * );
 177
 178 /*****************************************************************************
 179  * Open:
 180  *****************************************************************************/
 181 static int Open( vlc_object_t *p_this )
 182 {
 183     demux_t      *p_demux = (demux_t*)p_this;
 184     demux_sys_t  *p_sys;
 185     char         *psz_name;
 186     char         *psz_dvdcss_env;
 187     dvd_reader_t *p_dvdread;
 188     ifo_handle_t *p_vmg_file;
 189     vlc_value_t  val;
 190
 191     if( !p_demux->psz_path || !*p_demux->psz_path )
 192     {
 193         /* Only when selected */
 194         if( !p_this->b_force ) return VLC_EGENERIC;
 195
 196         psz_name = var_CreateGetString( p_this, "dvd" );
 197         if( !psz_name )
 198         {
 199             psz_name = strdup("");
 200         }
 201     }
 202     else
 203         psz_name = strdup( p_demux->psz_path );
 204
 205 #ifdef WIN32
 206     if( psz_name[0] && psz_name[1] == ':' &&
 207         psz_name[2] == '\\' && psz_name[3] == '\0' ) psz_name[2] = '\0';
 208 #endif
 209
 210     /* Override environment variable DVDCSS_METHOD with config option
 211      * (FIXME: this creates a small memory leak) */
 212     psz_dvdcss_env = config_GetPsz( p_demux, "dvdread-css-method" );
 213     if( psz_dvdcss_env && *psz_dvdcss_env )
 214     {
 215         char *psz_env;
 216
 217         psz_env = malloc( strlen("DVDCSS_METHOD=") +
 218                           strlen( psz_dvdcss_env ) + 1 );
 219         if( !psz_env )
 220         {
 221             free( psz_dvdcss_env );
 222             return VLC_ENOMEM;
 223         }
 224
 225         sprintf( psz_env, "%s%s", "DVDCSS_METHOD=", psz_dvdcss_env );
 226
 227         putenv( psz_env );
 228     }
 229     if( psz_dvdcss_env ) free( psz_dvdcss_env );
 230
 231     /* Open dvdread */
 232     if( !(p_dvdread = DVDOpen( psz_name )) )
 233     {
 234         msg_Err( p_demux, "DVDRead cannot open source: %s", psz_name );
 235         free( psz_name );
 236         return VLC_EGENERIC;
 237     }
 238     free( psz_name );
 239
 240     /* Ifo allocation & initialisation */
 241     if( !( p_vmg_file = ifoOpen( p_dvdread, 0 ) ) )
 242     {
 243         msg_Warn( p_demux, "cannot open VMG info" );
 244         return VLC_EGENERIC;
 245     }
 246     msg_Dbg( p_demux, "VMG opened" );
 247
 248     /* Fill p_demux field */
 249     p_demux->pf_demux = Demux;
 250     p_demux->pf_control = Control;
 251     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
 252     memset( p_sys, 0, sizeof( demux_sys_t ) );
 253
 254     ps_track_init( p_sys->tk );
 255     p_sys->i_aspect = -1;
 256     p_sys->i_title_cur_time = (mtime_t) 0;
 257     p_sys->i_cell_cur_time = (mtime_t) 0;
 258     p_sys->i_cell_duration = (mtime_t) 0;
 259
 260     p_sys->p_dvdread = p_dvdread;
 261     p_sys->p_vmg_file = p_vmg_file;
 262     p_sys->p_title = NULL;
 263     p_sys->p_vts_file = NULL;
 264
 265     p_sys->i_title = p_sys->i_chapter = -1;
 266     p_sys->i_mux_rate = 0;
 267
 268     var_Create( p_demux, "dvdread-angle", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
 269     var_Get( p_demux, "dvdread-angle", &val );
 270     p_sys->i_angle = val.i_int > 0 ? val.i_int : 1;
 271
 272     DemuxTitles( p_demux, &p_sys->i_angle );
 273     if( DvdReadSetArea( p_demux, 0, 0, p_sys->i_angle ) != VLC_SUCCESS )
 274     {
 275         Close( p_this );
 276         msg_Err( p_demux, "DvdReadSetArea(0,0,%i) failed (can't decrypt DVD?)",
 277                  p_sys->i_angle );
 278         return VLC_EGENERIC;
 279     }
 280
 281     /* Update default_pts to a suitable value for dvdread access */
 282     var_Create( p_demux, "dvdread-caching",
 283                 VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
 284
 285     return VLC_SUCCESS;
 286 }
 287
 288 /*****************************************************************************
 289  * Close:
 290  *****************************************************************************/
 291 static void Close( vlc_object_t *p_this )
 292 {
 293     demux_t     *p_demux = (demux_t*)p_this;
 294     demux_sys_t *p_sys = p_demux->p_sys;
 295     int i;
 296
 297     for( i = 0; i < PS_TK_COUNT; i++ )
 298     {
 299         ps_track_t *tk = &p_sys->tk[i];
 300         if( tk->b_seen )
 301         {
 302             es_format_Clean( &tk->fmt );
 303             if( tk->es ) es_out_Del( p_demux->out, tk->es );
 304         }
 305     }
 306
 307     /* Close libdvdread */
 308     if( p_sys->p_title ) DVDCloseFile( p_sys->p_title );
 309     if( p_sys->p_vts_file ) ifoClose( p_sys->p_vts_file );
 310     if( p_sys->p_vmg_file ) ifoClose( p_sys->p_vmg_file );
 311     DVDClose( p_sys->p_dvdread );
 312
 313     free( p_sys );
 314 }
 315
 316 static int64_t dvdtime_to_time( dvd_time_t *dtime, uint8_t still_time )
 317 {
 318 /* Macro to convert Binary Coded Decimal to Decimal */
 319 #define BCD2D(__x__) (((__x__ & 0xf0) >> 4) * 10 + (__x__ & 0x0f))
 320
 321     double f_fps, f_ms;
 322     int64_t i_micro_second = 0;
 323
 324     if (still_time == 0 || still_time == 0xFF)
 325     {
 326         i_micro_second += (int64_t)(BCD2D(dtime->hour)) * 60 * 60 * 1000000;
 327         i_micro_second += (int64_t)(BCD2D(dtime->minute)) * 60 * 1000000;
 328         i_micro_second += (int64_t)(BCD2D(dtime->second)) * 1000000;
 329
 330         switch((dtime->frame_u & 0xc0) >> 6)
 331         {
 332         case 1:
 333             f_fps = 25.0;
 334             break;
 335         case 3:
 336             f_fps = 29.97;
 337             break;
 338         default:
 339             f_fps = 2500.0;
 340             break;
 341         }
 342         f_ms = BCD2D(dtime->frame_u&0x3f) * 1000.0 / f_fps;
 343         i_micro_second += (int64_t)(f_ms * 1000.0);
 344     }
 345     else
 346     {
 347         i_micro_second = still_time;
 348         i_micro_second = (int64_t)((double)i_micro_second * 1000000.0);
 349     }
 350
 351     return i_micro_second;
 352 }
 353
 354 /*****************************************************************************
 355  * Control:
 356  *****************************************************************************/
 357 static int Control( demux_t *p_demux, int i_query, va_list args )
 358 {
 359     demux_sys_t *p_sys = p_demux->p_sys;
 360     double f, *pf;
 361     vlc_bool_t *pb;
 362     int64_t *pi64;
 363     input_title_t ***ppp_title;
 364     int *pi_int;
 365     int i;
 366
 367     switch( i_query )
 368     {
 369         case DEMUX_GET_POSITION:
 370         {
 371             pf = (double*) va_arg( args, double* );
 372
 373             if( p_sys->i_title_blocks > 0 )
 374                 *pf = (double)p_sys->i_title_offset / p_sys->i_title_blocks;
 375             else
 376                 *pf = 0.0;
 377
 378             return VLC_SUCCESS;
 379         }
 380         case DEMUX_SET_POSITION:
 381         {
 382             f = (double)va_arg( args, double );
 383
 384             DvdReadSeek( p_demux, f * p_sys->i_title_blocks );
 385
 386             return VLC_SUCCESS;
 387         }
 388         case DEMUX_GET_TIME:
 389             pi64 = (int64_t*)va_arg( args, int64_t * );
 390             if( p_sys->i_mux_rate > 0 )
 391             {
 392                 *pi64 = (int64_t)1000000 * DVD_VIDEO_LB_LEN *
 393                         p_sys->i_title_offset / 50 / p_sys->i_mux_rate;
 394                 return VLC_SUCCESS;
 395             }
 396             *pi64 = 0;
 397             return VLC_EGENERIC;
 398
 399         case DEMUX_GET_LENGTH:
 400             pi64 = (int64_t*)va_arg( args, int64_t * );
 401             if( p_sys->i_mux_rate > 0 )
 402             {
 403                 *pi64 = (int64_t)1000000 * DVD_VIDEO_LB_LEN *
 404                         p_sys->i_title_blocks / 50 / p_sys->i_mux_rate;
 405                 return VLC_SUCCESS;
 406             }
 407             *pi64 = 0;
 408             return VLC_EGENERIC;
 409
 410         /* Special for access_demux */
 411         case DEMUX_CAN_PAUSE:
 412         case DEMUX_CAN_CONTROL_PACE:
 413             /* TODO */
 414             pb = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
 415             *pb = VLC_TRUE;
 416             return VLC_SUCCESS;
 417
 418         case DEMUX_SET_PAUSE_STATE:
 419             return VLC_SUCCESS;
 420
 421         case DEMUX_GET_TITLE_INFO:
 422             ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
 423             pi_int    = (int*)va_arg( args, int* );
 424             *((int*)va_arg( args, int* )) = 1; /* Title offset */
 425             *((int*)va_arg( args, int* )) = 1; /* Chapter offset */
 426
 427             /* Duplicate title infos */
 428             *pi_int = p_sys->i_titles;
 429             *ppp_title = malloc( sizeof(input_title_t **) * p_sys->i_titles );
 430             for( i = 0; i < p_sys->i_titles; i++ )
 431             {
 432                 (*ppp_title)[i] = vlc_input_title_Duplicate(p_sys->titles[i]);
 433             }
 434             return VLC_SUCCESS;
 435
 436         case DEMUX_SET_TITLE:
 437             i = (int)va_arg( args, int );
 438             if( DvdReadSetArea( p_demux, i, 0, -1 ) != VLC_SUCCESS )
 439             {
 440                 msg_Warn( p_demux, "cannot set title/chapter" );
 441                 return VLC_EGENERIC;
 442             }
 443             p_demux->info.i_update |=
 444                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
 445             p_demux->info.i_title = i;
 446             p_demux->info.i_seekpoint = 0;
 447             return VLC_SUCCESS;
 448
 449         case DEMUX_SET_SEEKPOINT:
 450             i = (int)va_arg( args, int );
 451             if( DvdReadSetArea( p_demux, -1, i, -1 ) != VLC_SUCCESS )
 452             {
 453                 msg_Warn( p_demux, "cannot set title/chapter" );
 454                 return VLC_EGENERIC;
 455             }
 456             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
 457             p_demux->info.i_seekpoint = i;
 458             return VLC_SUCCESS;
 459
 460         case DEMUX_GET_PTS_DELAY:
 461             pi64 = (int64_t*)va_arg( args, int64_t * );
 462             *pi64 = (int64_t)var_GetInteger( p_demux, "dvdread-caching" )*1000;
 463             return VLC_SUCCESS;
 464
 465         /* TODO implement others */
 466         default:
 467             return VLC_EGENERIC;
 468     }
 469 }
 470
 471 /*****************************************************************************
 472  * Demux:
 473  *****************************************************************************/
 474 static int Demux( demux_t *p_demux )
 475 {
 476     demux_sys_t *p_sys = p_demux->p_sys;
 477
 478     uint8_t p_buffer[DVD_VIDEO_LB_LEN * DVD_BLOCK_READ_ONCE];
 479     int i_blocks_once, i_read;
 480     int i;
 481
 482     /*
 483      * Playback by cell in this pgc, starting at the cell for our chapter.
 484      */
 485
 486     /*
 487      * Check end of pack, and select the following one
 488      */
 489     if( !p_sys->i_pack_len )
 490     {
 491         /* Read NAV packet */
 492         if( DVDReadBlocks( p_sys->p_title, p_sys->i_next_vobu,
 493                            1, p_buffer ) != 1 )
 494         {
 495             msg_Err( p_demux, "read failed for block %d", p_sys->i_next_vobu );
 496             return -1;
 497         }
 498
 499         /* Basic check to be sure we don't have a empty title
 500          * go to next title if so */
 501         //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
 502
 503         /* Parse the contained dsi packet */
 504         DvdReadHandleDSI( p_demux, p_buffer );
 505
 506         /* End of title */
 507         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
 508         {
 509             if( p_sys->i_title + 1 >= p_sys->i_titles )
 510             {
 511                 return 0; /* EOF */
 512             }
 513
 514             DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
 515         }
 516
 517         if( p_sys->i_pack_len >= 1024 )
 518         {
 519             msg_Err( p_demux, "i_pack_len >= 1024 (%i). "
 520                      "This shouldn't happen!", p_sys->i_pack_len );
 521             return 0; /* EOF */
 522         }
 523
 524         /* FIXME: Ugly kludge: we send the pack block to the input for it
 525          * sometimes has a zero scr and restart the sync */
 526         p_sys->i_cur_block++;
 527         p_sys->i_title_offset++;
 528
 529         DemuxBlock( p_demux, p_buffer, DVD_VIDEO_LB_LEN );
 530     }
 531
 532     if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
 533     {
 534         if( p_sys->i_title + 1 >= p_sys->i_titles )
 535         {
 536             return 0; /* EOF */
 537         }
 538
 539         DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
 540     }
 541
 542     /*
 543      * Read actual data
 544      */
 545     i_blocks_once = __MIN( p_sys->i_pack_len, DVD_BLOCK_READ_ONCE );
 546     p_sys->i_pack_len -= i_blocks_once;
 547
 548     /* Reads from DVD */
 549     i_read = DVDReadBlocks( p_sys->p_title, p_sys->i_cur_block,
 550                             i_blocks_once, p_buffer );
 551     if( i_read != i_blocks_once )
 552     {
 553         msg_Err( p_demux, "read failed for %d/%d blocks at 0x%02x",
 554                  i_read, i_blocks_once, p_sys->i_cur_block );
 555         return -1;
 556     }
 557
 558     p_sys->i_cur_block += i_read;
 559     p_sys->i_title_offset += i_read;
 560
 561 #if 0
 562     msg_Dbg( p_demux, "i_blocks: %d len: %d current: 0x%02x",
 563              i_read, p_sys->i_pack_len, p_sys->i_cur_block );
 564 #endif
 565
 566     for( i = 0; i < i_read; i++ )
 567     {
 568         DemuxBlock( p_demux, p_buffer + i * DVD_VIDEO_LB_LEN,
 569                     DVD_VIDEO_LB_LEN );
 570     }
 571
 572 #undef p_pgc
 573
 574     return 1;
 575 }
 576
 577 /*****************************************************************************
 578  * DemuxBlock: demux a given block
 579  *****************************************************************************/
 580 static int DemuxBlock( demux_t *p_demux, uint8_t *pkt, int i_pkt )
 581 {
 582     demux_sys_t *p_sys = p_demux->p_sys;
 583     uint8_t     *p = pkt;
 584
 585     while( p < &pkt[i_pkt] )
 586     {
 587         int i_size = ps_pkt_size( p, &pkt[i_pkt] - p );
 588         block_t *p_pkt;
 589         if( i_size <= 0 )
 590         {
 591             break;
 592         }
 593
 594         /* Create a block */
 595         p_pkt = block_New( p_demux, i_size );
 596         memcpy( p_pkt->p_buffer, p, i_size);
 597
 598         /* Parse it and send it */
 599         switch( 0x100 | p[3] )
 600         {
 601         case 0x1b9:
 602         case 0x1bb:
 603         case 0x1bc:
 604
 605 #ifdef DVDREAD_DEBUG
 606             if( p[3] == 0xbc )
 607             {
 608                 msg_Warn( p_demux, "received a PSM packet" );
 609             }
 610             else if( p[3] == 0xbb )
 611             {
 612                 msg_Warn( p_demux, "received a SYSTEM packet" );
 613             }
 614 #endif
 615             block_Release( p_pkt );
 616             break;
 617
 618         case 0x1ba:
 619         {
 620             int64_t i_scr;
 621             int i_mux_rate;
 622             if( !ps_pkt_parse_pack( p_pkt, &i_scr, &i_mux_rate ) )
 623             {
 624                 es_out_Control( p_demux->out, ES_OUT_SET_PCR, i_scr );
 625                 if( i_mux_rate > 0 ) p_sys->i_mux_rate = i_mux_rate;
 626             }
 627             block_Release( p_pkt );
 628             break;
 629         }
 630         default:
 631         {
 632             int i_id = ps_pkt_id( p_pkt );
 633             if( i_id >= 0xc0 )
 634             {
 635                 ps_track_t *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
 636
 637                 if( !tk->b_seen )
 638                 {
 639                     ESNew( p_demux, i_id, 0 );
 640                 }
 641                 if( tk->b_seen && tk->es &&
 642                     !ps_pkt_parse_pes( p_pkt, tk->i_skip ) )
 643                 {
 644                     es_out_Send( p_demux->out, tk->es, p_pkt );
 645                 }
 646                 else
 647                 {
 648                     block_Release( p_pkt );
 649                 }
 650             }
 651             else
 652             {
 653                 block_Release( p_pkt );
 654             }
 655             break;
 656         }
 657         }
 658
 659         p += i_size;
 660     }
 661
 662     return VLC_SUCCESS;
 663 }
 664
 665 /*****************************************************************************
 666  * ESNew: register a new elementary stream
 667  *****************************************************************************/
 668 static void ESNew( demux_t *p_demux, int i_id, int i_lang )
 669 {
 670     demux_sys_t *p_sys = p_demux->p_sys;
 671     ps_track_t  *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
 672     char psz_language[3];
 673
 674     if( tk->b_seen ) return;
 675
 676     if( ps_track_fill( tk, 0, i_id ) )
 677     {
 678         msg_Warn( p_demux, "unknown codec for id=0x%x", i_id );
 679         return;
 680     }
 681
 682     psz_language[0] = psz_language[1] = psz_language[2] = 0;
 683     if( i_lang && i_lang != 0xffff )
 684     {
 685         psz_language[0] = (i_lang >> 8)&0xff;
 686         psz_language[1] = (i_lang     )&0xff;
 687     }
 688
 689     /* Add a new ES */
 690     if( tk->fmt.i_cat == VIDEO_ES )
 691     {
 692         if( p_sys->i_aspect >= 0 )
 693         {
 694             tk->fmt.video.i_aspect = p_sys->i_aspect;
 695         }
 696     }
 697     else if( tk->fmt.i_cat == AUDIO_ES )
 698     {
 699         int i_audio = -1;
 700         /* find the audio number PLEASE find another way */
 701         if( (i_id&0xbdf8) == 0xbd88 )       /* dts */
 702         {
 703             i_audio = i_id&0x07;
 704         }
 705         else if( (i_id&0xbdf0) == 0xbd80 )  /* a52 */
 706         {
 707             i_audio = i_id&0xf;
 708         }
 709         else if( (i_id&0xbdf0) == 0xbda0 )  /* lpcm */
 710         {
 711             i_audio = i_id&0x1f;
 712         }
 713         else if( ( i_id&0xe0 ) == 0xc0 )    /* mpga */
 714         {
 715             i_audio = i_id&0x1f;
 716         }
 717
 718         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
 719     }
 720     else if( tk->fmt.i_cat == SPU_ES )
 721     {
 722         /* Palette */
 723         tk->fmt.subs.spu.palette[0] = 0xBeef;
 724         memcpy( &tk->fmt.subs.spu.palette[1], p_sys->clut,
 725                 16 * sizeof( uint32_t ) );
 726
 727         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
 728     }
 729
 730     tk->es = es_out_Add( p_demux->out, &tk->fmt );
 731     tk->b_seen = VLC_TRUE;
 732 }
 733
 734 /*****************************************************************************
 735  * DvdReadSetArea: initialize input data for title x, chapter y.
 736  * It should be called for each user navigation request.
 737  *****************************************************************************
 738  * Take care that i_title and i_chapter start from 0.
 739  *****************************************************************************/
 740 static int DvdReadSetArea( demux_t *p_demux, int i_title, int i_chapter,
 741                            int i_angle )
 742 {
 743     demux_sys_t *p_sys = p_demux->p_sys;
 744     int pgc_id = 0, pgn = 0;
 745     int i;
 746
 747 #define p_pgc p_sys->p_cur_pgc
 748 #define p_vmg p_sys->p_vmg_file
 749 #define p_vts p_sys->p_vts_file
 750
 751     if( i_title >= 0 && i_title < p_sys->i_titles &&
 752         i_title != p_sys->i_title )
 753     {
 754         int i_start_cell, i_end_cell;
 755
 756         if( p_sys->p_title != NULL ) DVDCloseFile( p_sys->p_title );
 757         if( p_vts != NULL ) ifoClose( p_vts );
 758         p_sys->i_title = i_title;
 759
 760         /*
 761          *  We have to load all title information
 762          */
 763         msg_Dbg( p_demux, "open VTS %d, for title %d",
 764                  p_vmg->tt_srpt->title[i_title].title_set_nr, i_title + 1 );
 765
 766         /* Ifo vts */
 767         if( !( p_vts = ifoOpen( p_sys->p_dvdread,
 768                p_vmg->tt_srpt->title[i_title].title_set_nr ) ) )
 769         {
 770             msg_Err( p_demux, "fatal error in vts ifo" );
 771             return VLC_EGENERIC;
 772         }
 773
 774         /* Title position inside the selected vts */
 775         p_sys->i_ttn = p_vmg->tt_srpt->title[i_title].vts_ttn;
 776
 777         /* Find title start/end */
 778         pgc_id = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgcn;
 779         pgn = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgn;
 780         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 781
 782         p_sys->i_title_start_cell =
 783             i_start_cell = p_pgc->program_map[pgn - 1] - 1;
 784         p_sys->i_title_start_block =
 785             p_pgc->cell_playback[i_start_cell].first_sector;
 786
 787         p_sys->i_title_end_cell =
 788             i_end_cell = p_pgc->nr_of_cells - 1;
 789         p_sys->i_title_end_block =
 790             p_pgc->cell_playback[i_end_cell].last_sector;
 791
 792         p_sys->i_title_offset = 0;
 793
 794         p_sys->i_title_blocks = 0;
 795         for( i = i_start_cell; i <= i_end_cell; i++ )
 796         {
 797             p_sys->i_title_blocks += p_pgc->cell_playback[i].last_sector -
 798                 p_pgc->cell_playback[i].first_sector + 1;
 799         }
 800
 801         msg_Dbg( p_demux, "title %d vts_title %d pgc %d pgn %d "
 802                  "start %d end %d blocks: %d",
 803                  i_title + 1, p_sys->i_ttn, pgc_id, pgn,
 804                  p_sys->i_title_start_block, p_sys->i_title_end_block,
 805                  p_sys->i_title_blocks );
 806
 807         /*
 808          * Set properties for current chapter
 809          */
 810         p_sys->i_chapter = 0;
 811         p_sys->i_chapters =
 812             p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].nr_of_ptts;
 813
 814         pgc_id = p_vts->vts_ptt_srpt->title[
 815                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgcn;
 816         pgn = p_vts->vts_ptt_srpt->title[
 817                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgn;
 818
 819         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 820         p_sys->i_pack_len = 0;
 821         p_sys->i_next_cell =
 822             p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
 823         DvdReadFindCell( p_demux );
 824
 825         p_sys->i_next_vobu = p_sys->i_cur_block =
 826             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
 827
 828         /*
 829          * Angle management
 830          */
 831         p_sys->i_angles = p_vmg->tt_srpt->title[i_title].nr_of_angles;
 832         if( p_sys->i_angle > p_sys->i_angles ) p_sys->i_angle = 1;
 833
 834         /*
 835          * We've got enough info, time to open the title set data.
 836          */
 837         if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
 838             p_vmg->tt_srpt->title[i_title].title_set_nr,
 839             DVD_READ_TITLE_VOBS ) ) )
 840         {
 841             msg_Err( p_demux, "cannot open title (VTS_%02d_1.VOB)",
 842                      p_vmg->tt_srpt->title[i_title].title_set_nr );
 843             return VLC_EGENERIC;
 844         }
 845
 846         //IfoPrintTitle( p_demux );
 847
 848         /*
 849          * Destroy obsolete ES by reinitializing program 0
 850          * and find all ES in title with ifo data
 851          */
 852         es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
 853
 854         for( i = 0; i < PS_TK_COUNT; i++ )
 855         {
 856             ps_track_t *tk = &p_sys->tk[i];
 857             if( tk->b_seen )
 858             {
 859                 es_format_Clean( &tk->fmt );
 860                 if( tk->es ) es_out_Del( p_demux->out, tk->es );
 861             }
 862             tk->b_seen = VLC_FALSE;
 863         }
 864
 865         if( p_demux->info.i_title != i_title )
 866         {
 867             p_demux->info.i_update |=
 868                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
 869             p_demux->info.i_title = i_title;
 870             p_demux->info.i_seekpoint = 0;
 871         }
 872
 873         /* TODO: re-add angles */
 874
 875
 876         ESNew( p_demux, 0xe0, 0 ); /* Video, FIXME ? */
 877         p_sys->i_aspect = p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio;
 878
 879 #define audio_control \
 880     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 881
 882         /* Audio ES, in the order they appear in the .ifo */
 883         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams; i++ )
 884         {
 885             int i_position = 0;
 886             uint16_t i_id;
 887
 888             //IfoPrintAudio( p_demux, i );
 889
 890             /* Audio channel is active if first byte is 0x80 */
 891             if( audio_control & 0x8000 )
 892             {
 893                 i_position = ( audio_control & 0x7F00 ) >> 8;
 894
 895                 msg_Dbg( p_demux, "audio position  %d", i_position );
 896                 switch( p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format )
 897                 {
 898                 case 0x00: /* A52 */
 899                     i_id = (0x80 + i_position) | 0xbd00;
 900                     break;
 901                 case 0x02:
 902                 case 0x03: /* MPEG audio */
 903                     i_id = 0xc000 + i_position;
 904                     break;
 905                 case 0x04: /* LPCM */
 906                     i_id = (0xa0 + i_position) | 0xbd00;
 907                     break;
 908                 case 0x06: /* DTS */
 909                     i_id = (0x88 + i_position) | 0xbd00;
 910                     break;
 911                 default:
 912                     i_id = 0;
 913                     msg_Err( p_demux, "unknown audio type %.2x",
 914                         p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format );
 915                 }
 916
 917                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
 918                        vts_audio_attr[i - 1].lang_code );
 919             }
 920         }
 921 #undef audio_control
 922
 923 #define spu_palette \
 924     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->palette
 925
 926         memcpy( p_sys->clut, spu_palette, 16 * sizeof( uint32_t ) );
 927
 928 #define spu_control \
 929     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 930
 931         /* Sub Picture ES */
 932         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 933         {
 934             int i_position = 0;
 935             uint16_t i_id;
 936
 937             //IfoPrintSpu( p_sys, i );
 938             msg_Dbg( p_demux, "spu %d 0x%02x", i, spu_control );
 939
 940             if( spu_control & 0x80000000 )
 941             {
 942                 /*  there are several streams for one spu */
 943                 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 944                 {
 945                     /* 16:9 */
 946                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 947                     {
 948                     case 1: /* letterbox */
 949                         i_position = spu_control & 0xff;
 950                         break;
 951                     case 2: /* pan&scan */
 952                         i_position = ( spu_control >> 8 ) & 0xff;
 953                         break;
 954                     default: /* widescreen */
 955                         i_position = ( spu_control >> 16 ) & 0xff;
 956                         break;
 957                     }
 958                 }
 959                 else
 960                 {
 961                     /* 4:3 */
 962                     i_position = ( spu_control >> 24 ) & 0x7F;
 963                 }
 964
 965                 i_id = (0x20 + i_position) | 0xbd00;
 966
 967                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
 968                        vts_subp_attr[i - 1].lang_code );
 969             }
 970         }
 971 #undef spu_control
 972
 973     }
 974     else if( i_title != -1 && i_title != p_sys->i_title )
 975
 976     {
 977         return VLC_EGENERIC; /* Couldn't set title */
 978     }
 979
 980     /*
 981      * Chapter selection
 982      */
 983
 984     if( i_chapter >= 0 && i_chapter < p_sys->i_chapters )
 985     {
 986         pgc_id = p_vts->vts_ptt_srpt->title[
 987                      p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
 988         pgn = p_vts->vts_ptt_srpt->title[
 989                   p_sys->i_ttn - 1].ptt[i_chapter].pgn;
 990
 991         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
 992
 993         p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
 994         p_sys->i_chapter = i_chapter;
 995         DvdReadFindCell( p_demux );
 996
 997         p_sys->i_title_offset = 0;
 998         for( i = p_sys->i_title_start_cell; i < p_sys->i_cur_cell; i++ )
 999         {
1000             p_sys->i_title_offset += p_pgc->cell_playback[i].last_sector -
1001                 p_pgc->cell_playback[i].first_sector + 1;
1002         }
1003
1004         p_sys->i_pack_len = 0;
1005         p_sys->i_next_vobu = p_sys->i_cur_block =
1006             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1007
1008         if( p_demux->info.i_seekpoint != i_chapter )
1009         {
1010             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1011             p_demux->info.i_seekpoint = i_chapter;
1012         }
1013     }
1014     else if( i_chapter != -1 )
1015
1016     {
1017         return VLC_EGENERIC; /* Couldn't set chapter */
1018     }
1019
1020 #undef p_pgc
1021 #undef p_vts
1022 #undef p_vmg
1023
1024     return VLC_SUCCESS;
1025 }
1026
1027 /*****************************************************************************
1028  * DvdReadSeek : Goes to a given position on the stream.
1029  *****************************************************************************
1030  * This one is used by the input and translate chronological position from
1031  * input to logical position on the device.
1032  *****************************************************************************/
1033 static void DvdReadSeek( demux_t *p_demux, int i_block_offset )
1034 {
1035     demux_sys_t *p_sys = p_demux->p_sys;
1036     int i_chapter = 0;
1037     int i_cell = 0;
1038     int i_vobu = 0;
1039     int i_sub_cell = 0;
1040     int i_block;
1041
1042 #define p_pgc p_sys->p_cur_pgc
1043 #define p_vts p_sys->p_vts_file
1044
1045     /* Find cell */
1046     i_block = i_block_offset;
1047     for( i_cell = p_sys->i_title_start_cell;
1048          i_cell <= p_sys->i_title_end_cell; i_cell++ )
1049     {
1050         if( i_block < (int)p_pgc->cell_playback[i_cell].last_sector -
1051             (int)p_pgc->cell_playback[i_cell].first_sector + 1 ) break;
1052
1053         i_block -= (p_pgc->cell_playback[i_cell].last_sector -
1054             p_pgc->cell_playback[i_cell].first_sector + 1);
1055     }
1056     if( i_cell > p_sys->i_title_end_cell )
1057     {
1058         msg_Err( p_demux, "couldn't find cell for block %i", i_block_offset );
1059         return;
1060     }
1061     i_block += p_pgc->cell_playback[i_cell].first_sector;
1062     p_sys->i_title_offset = i_block_offset;
1063
1064     /* Find chapter */
1065     for( i_chapter = 0; i_chapter < p_sys->i_chapters; i_chapter++ )
1066     {
1067         int pgc_id, pgn, i_tmp;
1068
1069         pgc_id = p_vts->vts_ptt_srpt->title[
1070                     p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
1071         pgn = p_vts->vts_ptt_srpt->title[
1072                     p_sys->i_ttn - 1].ptt[i_chapter].pgn;
1073
1074         i_tmp = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc->program_map[pgn-1];
1075
1076         if( i_tmp > i_cell ) break;
1077     }
1078
1079     if( i_chapter < p_sys->i_chapters &&
1080         p_demux->info.i_seekpoint != i_chapter )
1081     {
1082         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1083         p_demux->info.i_seekpoint = i_chapter;
1084     }
1085
1086     /* Find vobu */
1087     while( (int)p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu] <= i_block )
1088     {
1089         i_vobu++;
1090     }
1091
1092     /* Find sub_cell */
1093     while( p_vts->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1094            p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1095     {
1096         i_sub_cell++;
1097     }
1098
1099 #if 1
1100     msg_Dbg( p_demux, "cell %d i_sub_cell %d chapter %d vobu %d "
1101              "cell_sector %d vobu_sector %d sub_cell_sector %d",
1102              i_cell, i_sub_cell, i_chapter, i_vobu,
1103              p_sys->p_cur_pgc->cell_playback[i_cell].first_sector,
1104              p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu],
1105              p_vts->vts_c_adt->cell_adr_table[i_sub_cell - 1].start_sector);
1106 #endif
1107
1108     p_sys->i_cur_block = i_block;
1109     p_sys->i_next_vobu = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu];
1110     p_sys->i_pack_len = p_sys->i_next_vobu - i_block;
1111     p_sys->i_cur_cell = i_cell;
1112     p_sys->i_chapter = i_chapter;
1113     DvdReadFindCell( p_demux );
1114
1115 #undef p_vts
1116 #undef p_pgc
1117
1118     return;
1119 }
1120
1121 /*****************************************************************************
1122  * DvdReadHandleDSI
1123  *****************************************************************************/
1124 static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
1125 {
1126     demux_sys_t *p_sys = p_demux->p_sys;
1127
1128     navRead_DSI( &p_sys->dsi_pack, &p_data[DSI_START_BYTE] );
1129
1130     /*
1131      * Determine where we go next.  These values are the ones we mostly
1132      * care about.
1133      */
1134     p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
1135     p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
1136
1137     /*
1138      * Store the timecodes so we can get the current time
1139      */
1140     p_sys->i_title_cur_time = (mtime_t) (p_sys->dsi_pack.dsi_gi.nv_pck_scr / 90 * 1000);
1141     p_sys->i_cell_cur_time = (mtime_t) dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 );
1142
1143     /*
1144      * If we're not at the end of this cell, we can determine the next
1145      * VOBU to display using the VOBU_SRI information section of the
1146      * DSI.  Using this value correctly follows the current angle,
1147      * avoiding the doubled scenes in The Matrix, and makes our life
1148      * really happy.
1149      */
1150
1151     p_sys->i_next_vobu = p_sys->i_cur_block +
1152         ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1153
1154     if( p_sys->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL
1155         && p_sys->i_angle > 1 )
1156     {
1157         switch( ( p_sys->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1158         {
1159         case 0x4:
1160             /* Interleaved unit with no angle */
1161             if( p_sys->dsi_pack.sml_pbi.ilvu_sa != 0 )
1162             {
1163                 p_sys->i_next_vobu = p_sys->i_cur_block +
1164                     p_sys->dsi_pack.sml_pbi.ilvu_sa;
1165                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1166             }
1167             else
1168             {
1169                 p_sys->i_next_vobu = p_sys->i_cur_block +
1170                     p_sys->dsi_pack.dsi_gi.vobu_ea + 1;
1171             }
1172             break;
1173         case 0x5:
1174             /* vobu is end of ilvu */
1175             if( p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address )
1176             {
1177                 p_sys->i_next_vobu = p_sys->i_cur_block +
1178                     p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address;
1179                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1180
1181                 break;
1182             }
1183         case 0x6:
1184             /* vobu is beginning of ilvu */
1185         case 0x9:
1186             /* next scr is 0 */
1187         case 0xa:
1188             /* entering interleaved section */
1189         case 0x8:
1190             /* non interleaved cells in interleaved section */
1191         default:
1192             p_sys->i_next_vobu = p_sys->i_cur_block +
1193                 ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1194             break;
1195         }
1196     }
1197     else if( p_sys->dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
1198     {
1199         p_sys->i_cur_cell = p_sys->i_next_cell;
1200
1201         /* End of title */
1202         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells ) return;
1203
1204         DvdReadFindCell( p_demux );
1205
1206         p_sys->i_next_vobu =
1207             p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1208
1209         p_sys->i_cell_duration = (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 );
1210     }
1211
1212
1213 #if 0
1214     msg_Dbg( p_demux, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d c_time %lld",
1215              p_sys->dsi_pack.dsi_gi.nv_pck_scr,
1216              p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
1217              p_sys->dsi_pack.dsi_gi.vobu_ea,
1218              p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
1219              p_sys->dsi_pack.dsi_gi.vobu_c_idn,
1220              dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 ) );
1221
1222     msg_Dbg( p_demux, "cell duration: %lld",
1223              (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 ) );
1224
1225     msg_Dbg( p_demux, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1226              p_sys->dsi_pack.sml_pbi.category,
1227              p_sys->dsi_pack.sml_pbi.ilvu_ea,
1228              p_sys->dsi_pack.sml_pbi.ilvu_sa,
1229              p_sys->dsi_pack.sml_pbi.size );
1230
1231     msg_Dbg( p_demux, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1232              p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1233              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
1234              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);
1235 #endif
1236 }
1237
1238 /*****************************************************************************
1239  * DvdReadFindCell
1240  *****************************************************************************/
1241 static void DvdReadFindCell( demux_t *p_demux )
1242 {
1243     demux_sys_t *p_sys = p_demux->p_sys;
1244
1245     pgc_t *p_pgc;
1246     int   pgc_id, pgn;
1247     int   i = 0;
1248
1249 #define cell p_sys->p_cur_pgc->cell_playback
1250
1251     if( cell[p_sys->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1252     {
1253         p_sys->i_cur_cell += p_sys->i_angle - 1;
1254
1255         while( cell[p_sys->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1256         {
1257             i++;
1258         }
1259         p_sys->i_next_cell = p_sys->i_cur_cell + i + 1;
1260     }
1261     else
1262     {
1263         p_sys->i_next_cell = p_sys->i_cur_cell + 1;
1264     }
1265
1266 #undef cell
1267
1268     if( p_sys->i_chapter + 1 >= p_sys->i_chapters ) return;
1269
1270     pgc_id = p_sys->p_vts_file->vts_ptt_srpt->title[
1271                 p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgcn;
1272     pgn = p_sys->p_vts_file->vts_ptt_srpt->title[
1273               p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgn;
1274     p_pgc = p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
1275
1276     if( p_sys->i_cur_cell >= p_pgc->program_map[pgn - 1] - 1 )
1277     {
1278         p_sys->i_chapter++;
1279
1280         if( p_sys->i_chapter < p_sys->i_chapters &&
1281             p_demux->info.i_seekpoint != p_sys->i_chapter )
1282         {
1283             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1284             p_demux->info.i_seekpoint = p_sys->i_chapter;
1285         }
1286     }
1287 }
1288
1289 /*****************************************************************************
1290  * DemuxTitles: get the titles/chapters structure
1291  *****************************************************************************/
1292 static void DemuxTitles( demux_t *p_demux, int *pi_angle )
1293 {
1294     demux_sys_t *p_sys = p_demux->p_sys;
1295     input_title_t *t;
1296     seekpoint_t *s;
1297     int32_t i_titles;
1298     int i;
1299
1300     /* Find out number of titles/chapters */
1301 #define tt_srpt p_sys->p_vmg_file->tt_srpt
1302
1303     i_titles = tt_srpt->nr_of_srpts;
1304     msg_Dbg( p_demux, "number of titles: %d", i_titles );
1305
1306     for( i = 0; i < i_titles; i++ )
1307     {
1308         int32_t i_chapters = 0;
1309         int j;
1310
1311         i_chapters = tt_srpt->title[i].nr_of_ptts;
1312         msg_Dbg( p_demux, "title %d has %d chapters", i, i_chapters );
1313
1314         t = vlc_input_title_New();
1315
1316         for( j = 0; j < __MAX( i_chapters, 1 ); j++ )
1317         {
1318             s = vlc_seekpoint_New();
1319             TAB_APPEND( t->i_seekpoint, t->seekpoint, s );
1320         }
1321
1322         TAB_APPEND( p_sys->i_titles, p_sys->titles, t );
1323     }
1324
1325 #undef tt_srpt
1326 }