git.sesse.net Git - vlc/blob - plugins/dvdread/input_dvdread.c

   1 /*****************************************************************************
   2  * input_dvdread.c: DvdRead plugin.
   3  *****************************************************************************
   4  * This plugins should handle all the known specificities of the DVD format,
   5  * especially the 2048 bytes logical block size.
   6  * It depends on: libdvdread for ifo files and block reading.
   7  *****************************************************************************
   8  * Copyright (C) 2001 VideoLAN
   9  * $Id: input_dvdread.c,v 1.20 2002/02/15 13:32:53 sam Exp $
  10  *
  11  * Author: Stéphane Borel <stef@via.ecp.fr>
  12  *
  13  * Some code taken form the play_title.c by Billy Biggs <vektor@dumbterm.net>
  14  * in libdvdread.
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  29  *****************************************************************************/
  30
  31 /*****************************************************************************
  32  * Preamble
  33  *****************************************************************************/
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36
  37 #include <videolan/vlc.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 <string.h>
  46 #include <errno.h>
  47 #include <assert.h>
  48
  49 #ifdef STRNCASECMP_IN_STRINGS_H
  50 #   include <strings.h>
  51 #endif
  52
  53 #if defined( WIN32 )
  54 #   include <io.h>                                                 /* read() */
  55 #else
  56 #   include <sys/uio.h>                                      /* struct iovec */
  57 #endif
  58
  59 #if defined( WIN32 )
  60 #   include "input_iovec.h"
  61 #endif
  62
  63 #include "stream_control.h"
  64 #include "input_ext-intf.h"
  65 #include "input_ext-dec.h"
  66 #include "input_ext-plugins.h"
  67
  68 #include "input_dvdread.h"
  69
  70 #include "iso_lang.h"
  71
  72 #include "debug.h"
  73
  74 /* how many blocks DVDRead will read in each loop */
  75 #define DVD_BLOCK_READ_ONCE 64
  76
  77 /*****************************************************************************
  78  * Local prototypes
  79  *****************************************************************************/
  80 /* called from outside */
  81 static int  DvdReadProbe    ( struct input_thread_s * );
  82 static void DvdReadInit     ( struct input_thread_s * );
  83 static void DvdReadEnd      ( struct input_thread_s * );
  84 static void DvdReadOpen     ( struct input_thread_s * );
  85 static void DvdReadClose    ( struct input_thread_s * );
  86 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
  87 static int  DvdReadSetProgram( struct input_thread_s *, pgrm_descriptor_t * );
  88 static int  DvdReadRead     ( struct input_thread_s *, data_packet_t ** );
  89 static void DvdReadSeek     ( struct input_thread_s *, off_t );
  90 static int  DvdReadRewind   ( struct input_thread_s * );
  91
  92 /* called only from here */
  93 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
  94 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
  95
  96 /*****************************************************************************
  97  * Declare a buffer manager
  98  *****************************************************************************/
  99 #define FLAGS           BUFFERS_UNIQUE_SIZE
 100 #define NB_LIFO         1
 101 DECLARE_BUFFERS_SHARED( FLAGS, NB_LIFO );
 102 DECLARE_BUFFERS_INIT( FLAGS, NB_LIFO );
 103 DECLARE_BUFFERS_END_SHARED( FLAGS, NB_LIFO );
 104 DECLARE_BUFFERS_NEWPACKET_SHARED( FLAGS, NB_LIFO );
 105 DECLARE_BUFFERS_DELETEPACKET_SHARED( FLAGS, NB_LIFO, 1000 );
 106 DECLARE_BUFFERS_NEWPES( FLAGS, NB_LIFO );
 107 DECLARE_BUFFERS_DELETEPES( FLAGS, NB_LIFO, 1000 );
 108 DECLARE_BUFFERS_TOIO( FLAGS, DVD_VIDEO_LB_LEN );
 109 DECLARE_BUFFERS_SHAREBUFFER( FLAGS );
 110
 111 /*****************************************************************************
 112  * Functions exported as capabilities. They are declared as static so that
 113  * we don't pollute the namespace too much.
 114  *****************************************************************************/
 115 void _M( input_getfunctions )( function_list_t * p_function_list )
 116 {
 117 #define input p_function_list->functions.input
 118     input.pf_probe            = DvdReadProbe;
 119     input.pf_init             = DvdReadInit;
 120     input.pf_open             = DvdReadOpen;
 121     input.pf_close            = DvdReadClose;
 122     input.pf_end              = DvdReadEnd;
 123     input.pf_init_bit_stream  = InitBitstream;
 124     input.pf_read             = DvdReadRead;
 125     input.pf_set_area         = DvdReadSetArea;
 126     input.pf_set_program      = DvdReadSetProgram;
 127     input.pf_demux            = input_DemuxPS;
 128     input.pf_new_packet       = input_NewPacket;
 129     input.pf_new_pes          = input_NewPES;
 130     input.pf_delete_packet    = input_DeletePacket;
 131     input.pf_delete_pes       = input_DeletePES;
 132     input.pf_rewind           = DvdReadRewind;
 133     input.pf_seek             = DvdReadSeek;
 134
 135 #undef input
 136 }
 137
 138 /*
 139  * Data reading functions
 140  */
 141
 142 /*****************************************************************************
 143  * DvdReadProbe: verifies that the stream is a PS stream
 144  *****************************************************************************/
 145 static int DvdReadProbe( input_thread_t *p_input )
 146 {
 147     char * psz_name = p_input->p_source;
 148
 149     if((( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ))
 150      ||(( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 )))
 151     {
 152         return 0;
 153     }
 154
 155     return -1;
 156 }
 157
 158 /*****************************************************************************
 159  * DvdReadInit: initializes DVD structures
 160  *****************************************************************************/
 161 static void DvdReadInit( input_thread_t * p_input )
 162 {
 163     thread_dvd_data_t *  p_dvd;
 164     input_area_t *       p_area;
 165     int                  i_title;
 166     int                  i_chapter;
 167     int                  i;
 168
 169     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 170     if( p_dvd == NULL )
 171     {
 172         intf_ErrMsg( "dvdread error: out of memory" );
 173         p_input->b_error = 1;
 174         return;
 175     }
 176
 177     /* we take the pointer to dvd_reader_t back  */
 178     p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
 179     p_dvd->p_title = NULL;
 180     p_dvd->p_vts_file = NULL;
 181
 182     p_input->p_plugin_data = (void *)p_dvd;
 183
 184     if( (p_input->p_method_data = input_BuffersInit()) == NULL )
 185     {
 186         free( p_dvd );
 187         p_input->b_error = 1;
 188         return;
 189     }
 190
 191     /* We read DVD_BLOCK_READ_ONCE in each loop */
 192     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 193
 194     /* Ifo allocation & initialisation */
 195     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 196     {
 197         intf_ErrMsg( "dvdread error: can't open VMG info" );
 198         input_BuffersEnd( p_input->p_method_data );
 199         free( p_dvd );
 200         p_input->b_error = 1;
 201         return;
 202     }
 203     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 204
 205     /* Set stream and area data */
 206     vlc_mutex_lock( &p_input->stream.stream_lock );
 207
 208     /* Initialize ES structures */
 209     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 210
 211     /* disc input method */
 212     p_input->stream.i_method = INPUT_METHOD_DVD;
 213
 214 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 215     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 216
 217 #define area p_input->stream.pp_areas
 218     /* We start from 1 here since the default area 0
 219      * is reserved for video_ts.vob */
 220     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 221     {
 222         input_AddArea( p_input );
 223
 224         /* Titles are Program Chains */
 225         area[i]->i_id = i;
 226
 227         /* Absolute start offset and size
 228          * We can only set that with vts ifo, so we do it during the
 229          * first call to DVDSetArea */
 230         area[i]->i_start = 0;
 231         area[i]->i_size = 0;
 232
 233         /* Number of chapters */
 234         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 235         area[i]->i_part = 1;
 236
 237         /* Number of angles */
 238         area[i]->i_angle_nb = 0;
 239         area[i]->i_angle = 1;
 240
 241         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 242     }
 243 #undef area
 244
 245     /* Get requested title - if none try the first title */
 246     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 247     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 248     {
 249         i_title = 1;
 250     }
 251
 252 #undef tt_srpt
 253
 254     /* Get requested chapter - if none defaults to first one */
 255     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 256     if( i_chapter <= 0 )
 257     {
 258         i_chapter = 1;
 259     }
 260
 261     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 262
 263     p_area = p_input->stream.pp_areas[i_title];
 264
 265     /* set title, chapter, audio and subpic */
 266     DvdReadSetArea( p_input, p_area );
 267
 268     vlc_mutex_unlock( &p_input->stream.stream_lock );
 269
 270     return;
 271 }
 272
 273 /*****************************************************************************
 274  * DvdReadOpen: open libdvdread
 275  *****************************************************************************/
 276 static void DvdReadOpen( struct input_thread_s *p_input )
 277 {
 278     dvd_reader_t    *p_dvdread;
 279
 280     vlc_mutex_lock( &p_input->stream.stream_lock );
 281
 282     p_input->stream.i_method = INPUT_METHOD_DVD;
 283
 284     /* If we are here we can control the pace... */
 285     p_input->stream.b_pace_control = 1;
 286     p_input->stream.b_seekable = 1;
 287
 288     p_input->stream.p_selected_area->i_size = 0;
 289     p_input->stream.p_selected_area->i_tell = 0;
 290
 291     vlc_mutex_unlock( &p_input->stream.stream_lock );
 292
 293     /* XXX: put this shit in an access plugin */
 294     if( strlen( p_input->p_source ) > 8
 295          && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
 296     {
 297         p_dvdread = DVDOpen( p_input->p_source + 8 );
 298     }
 299     else if( strlen( p_input->p_source ) > 4
 300          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 301     {
 302         p_dvdread = DVDOpen( p_input->p_source + 4 );
 303     }
 304     else
 305     {
 306         p_dvdread = DVDOpen( p_input->p_source );
 307     }
 308
 309     if( ! p_dvdread )
 310     {
 311         p_input->b_error = 1;
 312         return;
 313     }
 314
 315     /* the vlc input doesn't handle the file descriptor with libdvdread */
 316     p_input->i_handle = -1;
 317
 318     /* p_dvdread is stored in p_plugin_data until we have
 319      * malloc'ed a dvd_thread_data_t */
 320     p_input->p_plugin_data = (void *) p_dvdread;
 321 }
 322
 323 /*****************************************************************************
 324  * DvdReadClose: close libdvdread
 325  *****************************************************************************/
 326 static void DvdReadClose( struct input_thread_s *p_input )
 327 {
 328     DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
 329     free( p_input->p_plugin_data );
 330     p_input->p_plugin_data = NULL;
 331
 332 }
 333
 334 /*****************************************************************************
 335  * DvdReadEnd: frees unused data
 336  *****************************************************************************/
 337 static void DvdReadEnd( input_thread_t * p_input )
 338 {
 339     thread_dvd_data_t *     p_dvd;
 340
 341     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 342
 343     /* close libdvdread */
 344     DVDCloseFile( p_dvd->p_title );
 345     ifoClose( p_dvd->p_vts_file );
 346     ifoClose( p_dvd->p_vmg_file );
 347
 348     input_BuffersEnd( p_input->p_method_data );
 349 }
 350
 351 /*****************************************************************************
 352  * DvdReadSetProgram: Does nothing, a DVD is mono-program
 353  *****************************************************************************/
 354 static int DvdReadSetProgram( input_thread_t * p_input,
 355                               pgrm_descriptor_t * p_program )
 356 {
 357     return 0;
 358 }
 359
 360 #define p_pgc         p_dvd->p_cur_pgc
 361
 362 /*****************************************************************************
 363  * DvdReadSetArea: initialize input data for title x, chapter y.
 364  * It should be called for each user navigation request.
 365  *****************************************************************************
 366  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 367  * Note that you have to take the lock before entering here.
 368  *****************************************************************************/
 369 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 370 {
 371     thread_dvd_data_t *  p_dvd;
 372     int                  pgc_id = 0;
 373     int                  pgn = 0;
 374
 375     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 376
 377     /* we can't use the interface slider until initilization is complete */
 378     p_input->stream.b_seekable = 0;
 379
 380     if( p_area != p_input->stream.p_selected_area )
 381     {
 382         es_descriptor_t *    p_es;
 383         int                  i_cell = 0;
 384         int                  i_audio_nb = 0;
 385         int                  i_spu_nb = 0;
 386         int                  i;
 387
 388 #define p_vmg         p_dvd->p_vmg_file
 389 #define p_vts         p_dvd->p_vts_file
 390         if( p_dvd->p_title != NULL )
 391         {
 392             DVDCloseFile( p_dvd->p_title );
 393         }
 394
 395         if( p_vts != NULL )
 396         {
 397             ifoClose( p_vts );
 398         }
 399
 400         /* Reset the Chapter position of the old title */
 401         p_input->stream.p_selected_area->i_part = 1;
 402
 403         /*
 404          *  We have to load all title information
 405          */
 406         /* Change the default area */
 407         p_input->stream.p_selected_area = p_area;
 408
 409         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 410             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 411             p_area->i_id );
 412
 413         /* ifo vts */
 414         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 415                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 416         {
 417             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 418             ifoClose( p_vmg );
 419             DVDClose( p_dvd->p_dvdread );
 420             p_input->b_error = 1;
 421             return -1;
 422         }
 423
 424         /* title position inside the selected vts */
 425         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 426
 427         /*
 428          * Set selected title start
 429          */
 430         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 431         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 432         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 433         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 434
 435         p_area->i_start =
 436             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 437
 438         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 439                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 440
 441         /*
 442          * Find title end
 443          */
 444         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 445
 446         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 447         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 448
 449         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 450                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 451
 452         /*
 453          * Set properties for current chapter
 454          */
 455         /* Remeber current chapter */
 456         p_dvd->i_chapter = p_area->i_part;
 457         p_dvd->b_eoc = 0;
 458
 459         pgc_id = p_vts->vts_ptt_srpt->title[
 460                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 461         pgn = p_vts->vts_ptt_srpt->title[
 462                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 463
 464         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 465         p_dvd->i_pack_len = 0;
 466         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 467         DvdReadFindCell( p_dvd );
 468
 469         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 470             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 471
 472         /*
 473          * Angle management
 474          */
 475         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 476         p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 477
 478         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 479         {
 480             p_area->i_angle = 1;
 481         }
 482         p_dvd->i_angle = p_area->i_angle;
 483         p_dvd->i_angle_nb = p_area->i_angle_nb;
 484
 485         /*
 486          * We've got enough info, time to open the title set data.
 487          */
 488         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 489             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 490             DVD_READ_TITLE_VOBS ) ) )
 491         {
 492             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 493                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 494             ifoClose( p_vts );
 495             ifoClose( p_vmg );
 496             DVDClose( p_dvd->p_dvdread );
 497             return -1;
 498         }
 499
 500 //        IfoPrintTitle( p_dvd );
 501
 502         /*
 503          * Destroy obsolete ES by reinitializing program 0
 504          * and find all ES in title with ifo data
 505          */
 506         if( p_input->stream.pp_programs != NULL )
 507         {
 508             /* We don't use input_EndStream here since
 509              * we keep area structures */
 510
 511             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 512             {
 513                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 514             }
 515
 516             free( p_input->stream.pp_selected_es );
 517             input_DelProgram( p_input, p_input->stream.p_selected_program );
 518
 519             p_input->stream.pp_selected_es = NULL;
 520             p_input->stream.i_selected_es_number = 0;
 521         }
 522
 523         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 524         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 525
 526         /* No PSM to read in DVD mode, we already have all information */
 527         p_input->stream.p_selected_program->b_is_ok = 1;
 528
 529         p_es = NULL;
 530
 531         /* ES 0 -> video MPEG2 */
 532 //        IfoPrintVideo( p_dvd );
 533
 534         p_es = input_AddES( p_input, p_input->stream.p_selected_program, 0xe0, 0 );
 535         p_es->i_stream_id = 0xe0;
 536         p_es->i_type = MPEG2_VIDEO_ES;
 537         p_es->i_cat = VIDEO_ES;
 538         if( p_main->b_video )
 539         {
 540             input_SelectES( p_input, p_es );
 541         }
 542
 543 #define audio_control \
 544     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 545         /* Audio ES, in the order they appear in .ifo */
 546         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 547         {
 548             int i_position = 0;
 549             u16 i_id;
 550
 551 //            IfoPrintAudio( p_dvd, i );
 552
 553             /* audio channel is active if first byte is 0x80 */
 554             if( audio_control & 0x8000 )
 555             {
 556                 i_audio_nb++;
 557                 i_position = ( audio_control & 0x7F00 ) >> 8;
 558
 559             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 560                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 561                 {
 562                 case 0x00:              /* AC3 */
 563                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 564                     p_es = input_AddES( p_input,
 565                                p_input->stream.p_selected_program, i_id, 0 );
 566                     p_es->i_stream_id = 0xbd;
 567                     p_es->i_type = AC3_AUDIO_ES;
 568                     p_es->b_audio = 1;
 569                     p_es->i_cat = AUDIO_ES;
 570                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 571                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 572                     strcat( p_es->psz_desc, " (ac3)" );
 573
 574                     break;
 575                 case 0x02:
 576                 case 0x03:              /* MPEG audio */
 577                     i_id = 0xc0 + i_position;
 578                     p_es = input_AddES( p_input,
 579                                     p_input->stream.p_selected_program, i_id, 0 );
 580                     p_es->i_stream_id = i_id;
 581                     p_es->i_type = MPEG2_AUDIO_ES;
 582                     p_es->b_audio = 1;
 583                     p_es->i_cat = AUDIO_ES;
 584                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 585                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 586                     strcat( p_es->psz_desc, " (mpeg)" );
 587
 588                     break;
 589                 case 0x04:              /* LPCM */
 590
 591                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 592                     p_es = input_AddES( p_input,
 593                                     p_input->stream.p_selected_program, i_id, 0 );
 594                     p_es->i_stream_id = i_id;
 595                     p_es->i_type = LPCM_AUDIO_ES;
 596                     p_es->b_audio = 1;
 597                     p_es->i_cat = AUDIO_ES;
 598                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 599                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 600                     strcat( p_es->psz_desc, " (lpcm)" );
 601
 602                     break;
 603                 case 0x06:              /* DTS */
 604                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 605                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 606                                  "(0x%x)", i_id );
 607                     break;
 608                 default:
 609                     i_id = 0;
 610                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 611                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 612                 }
 613             }
 614         }
 615 #undef audio_control
 616 #define spu_control \
 617     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 618
 619         /* Sub Picture ES */
 620
 621         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 622         {
 623             int i_position = 0;
 624             u16 i_id;
 625
 626 //            IfoPrintSpu( p_dvd, i );
 627             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 628
 629             if( spu_control & 0x80000000 )
 630             {
 631                 i_spu_nb++;
 632
 633                 /*  there are several streams for one spu */
 634                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 635                 {
 636                     /* 16:9 */
 637                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 638                     {
 639                     case 1:
 640                         i_position = spu_control & 0xff;
 641                         break;
 642                     case 2:
 643                         i_position = ( spu_control >> 8 ) & 0xff;
 644                         break;
 645                     default:
 646                         i_position = ( spu_control >> 16 ) & 0xff;
 647                         break;
 648                     }
 649                 }
 650                 else
 651                 {
 652                     /* 4:3 */
 653                     i_position = ( spu_control >> 24 ) & 0x7F;
 654                 }
 655
 656                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 657                 p_es = input_AddES( p_input,
 658                                     p_input->stream.p_selected_program, i_id, 0 );
 659                 p_es->i_stream_id = 0xbd;
 660                 p_es->i_type = DVD_SPU_ES;
 661                 p_es->i_cat = SPU_ES;
 662                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 663                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 664             }
 665         }
 666 #undef spu_control
 667         if( p_main->b_audio )
 668         {
 669             /* For audio: first one if none or a not existing one specified */
 670             int i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 671             if( i_audio < 0 || i_audio > i_audio_nb )
 672             {
 673                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 674                 i_audio = 1;
 675             }
 676             if( i_audio > 0 && i_audio_nb > 0 )
 677             {
 678                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 679                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 680                       REQUESTED_AC3 ) )
 681                 {
 682                     int     i_ac3 = i_audio;
 683                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 684                              AC3_AUDIO_ES ) && ( i_ac3 <=
 685                              p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
 686                     {
 687                         i_ac3++;
 688                     }
 689                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 690                     {
 691                         input_SelectES( p_input,
 692                                         p_input->stream.pp_es[i_ac3] );
 693                     }
 694                 }
 695                 else
 696                 {
 697                     input_SelectES( p_input,
 698                                     p_input->stream.pp_es[i_audio] );
 699                 }
 700             }
 701         }
 702
 703         if( p_main->b_video )
 704         {
 705             /* for spu, default is none */
 706             int i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 707             if( i_spu < 0 || i_spu > i_spu_nb )
 708             {
 709                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 710                 i_spu = 0;
 711             }
 712             if( i_spu > 0 && i_spu_nb > 0 )
 713             {
 714                 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
 715                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 716             }
 717         }
 718     } /* i_title >= 0 */
 719     else
 720     {
 721         p_area = p_input->stream.p_selected_area;
 722     }
 723
 724     /*
 725      * Chapter selection
 726      */
 727
 728     if( p_area->i_part != p_dvd->i_chapter )
 729     {
 730         if( ( p_area->i_part > 0 ) &&
 731             ( p_area->i_part <= p_area->i_part_nb ))
 732         {
 733             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 734             pgc_id = p_vts->vts_ptt_srpt->title[
 735                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 736             pgn = p_vts->vts_ptt_srpt->title[
 737                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 738
 739             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 740
 741             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 742             p_dvd->i_chapter = p_area->i_part;
 743             DvdReadFindCell( p_dvd );
 744
 745             p_dvd->i_pack_len = 0;
 746             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 747                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 748         }
 749         else
 750         {
 751             p_area->i_part = p_dvd->i_chapter;
 752         }
 753     }
 754 #undef p_vts
 755 #undef p_vmg
 756
 757     if( p_area->i_angle != p_dvd->i_angle )
 758     {
 759         p_dvd->i_angle = p_area->i_angle;
 760
 761         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 762     }
 763     /* warn interface that something has changed */
 764     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 765     p_input->stream.b_seekable = 1;
 766     p_input->stream.b_changed = 1;
 767
 768     return 0;
 769 }
 770
 771
 772 /*****************************************************************************
 773  * DvdReadRead: reads data packets into the netlist.
 774  *****************************************************************************
 775  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 776  * EOF.
 777  *****************************************************************************/
 778 static int DvdReadRead( input_thread_t * p_input,
 779                         data_packet_t ** pp_data )
 780 {
 781     thread_dvd_data_t *     p_dvd;
 782     u8                      p_data[DVD_VIDEO_LB_LEN];
 783     struct iovec            p_vec[DVD_BLOCK_READ_ONCE];
 784     u8 *                    pi_cur;
 785     int                     i_blocks;
 786     int                     i_read;
 787     int                     i_iovec;
 788     int                     i_packet_size;
 789     int                     i_packet;
 790     int                     i_pos;
 791     data_packet_t *         p_data_p;
 792     boolean_t               b_eot = 0;
 793
 794     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 795
 796     *pp_data = NULL;
 797
 798     /*
 799      * Playback by cell in this pgc, starting at the cell for our chapter.
 800      */
 801
 802     /*
 803      * End of pack, we select the following one
 804      */
 805     if( ! p_dvd->i_pack_len )
 806     {
 807         /*
 808          * Read NAV packet.
 809          */
 810         if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 811                        1, p_data ) ) != 1 )
 812         {
 813             intf_ErrMsg( "dvdread error: read failed for block %d",
 814                          p_dvd->i_next_vobu );
 815             return -1;
 816         }
 817
 818         /* basic check to be sure we don't have a empty title
 819          * go to next title if so */
 820         assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
 821         if( p_data[41] == 0xbf && p_data[1027] == 0xbf )
 822         {
 823             /*
 824              * Parse the contained dsi packet.
 825              */
 826
 827             DvdReadHandleDSI( p_dvd, p_data );
 828
 829             /* End of File */
 830             if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 831             {
 832                 return 1;
 833             }
 834
 835             assert( p_dvd->i_pack_len < 1024 );
 836             /* FIXME: Ugly kludge: we send the pack block to the input for it
 837              * sometimes has a zero scr and restart the sync */
 838             //p_dvd->i_cur_block ++;
 839             p_dvd->i_pack_len++;
 840         }
 841         else
 842         {
 843             b_eot = 1;
 844             p_dvd->i_pack_len = 0;
 845             return 1;
 846         }
 847     }
 848
 849     /*
 850      * Compute the number of blocks to read
 851      */
 852     i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
 853              ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
 854     p_dvd->i_pack_len -= i_blocks;
 855
 856     /* Get iovecs */
 857     *pp_data = p_data_p = input_BuffersToIO( p_input->p_method_data, p_vec,
 858                                              DVD_BLOCK_READ_ONCE );
 859
 860     if ( p_data_p == NULL )
 861     {
 862         return( -1 );
 863     }
 864
 865     /* Reads from DVD */
 866     i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 867                              i_blocks, p_vec );
 868     if( i_read != i_blocks )
 869     {
 870         intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 871                      i_read, i_blocks, p_dvd->i_cur_block );
 872         return -1;
 873     }
 874
 875     p_dvd->i_cur_block += i_read;
 876 /*
 877     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 878 */
 879     i_packet = 0;
 880
 881     /* Read headers to compute payload length */
 882     for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
 883     {
 884         data_packet_t * p_current = p_data_p;
 885         i_pos = 0;
 886
 887         while( i_pos < DVD_VIDEO_LB_LEN )
 888         {
 889             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 890
 891             /*default header */
 892             if( U32_AT( pi_cur ) != 0x1BA )
 893             {
 894                 /* That's the case for all packets, except pack header. */
 895                 i_packet_size = U16_AT( pi_cur + 4 );
 896             }
 897             else
 898             {
 899                 /* MPEG-2 Pack header. */
 900                 i_packet_size = 8;
 901             }
 902             if( i_pos != 0 )
 903             {
 904                 *pp_data = input_ShareBuffer( p_input->p_method_data,
 905                                               p_current );
 906             }
 907             else
 908             {
 909                 *pp_data = p_data_p;
 910                 p_data_p = p_data_p->p_next;
 911             }
 912
 913             (*pp_data)->p_payload_start = (*pp_data)->p_demux_start =
 914                     (*pp_data)->p_demux_start + i_pos;
 915
 916
 917             (*pp_data)->p_payload_end =
 918                     (*pp_data)->p_payload_start + i_packet_size + 6;
 919
 920 //            pp_packets[i_packet]->p_next = NULL;
 921 //            pp_packets[i_packet]->b_discard_payload = 0;
 922
 923             i_packet++;
 924             i_pos += i_packet_size + 6;
 925             pp_data = &(*pp_data)->p_next;
 926         }
 927     }
 928
 929     p_input->pf_delete_packet( p_input->p_method_data, p_data_p );
 930     *pp_data = NULL;
 931
 932     vlc_mutex_lock( &p_input->stream.stream_lock );
 933
 934     p_input->stream.p_selected_area->i_tell =
 935         LB2OFF( p_dvd->i_cur_block ) -
 936             p_input->stream.p_selected_area->i_start;
 937
 938     if( p_dvd->b_eoc )
 939     {
 940         /* We modify i_part only at end of chapter not to erase
 941          * some modification from the interface */
 942         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 943         p_dvd->b_eoc = 0;
 944     }
 945
 946     if( p_input->stream.p_selected_area->i_tell
 947             >= p_input->stream.p_selected_area->i_size || b_eot )
 948     {
 949         if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
 950                         p_input->stream.i_area_nb )
 951         {
 952             /* EOF */
 953             vlc_mutex_unlock( &p_input->stream.stream_lock );
 954             return 1;
 955         }
 956
 957         /* EOT */
 958         intf_WarnMsg( 4, "dvd info: new title" );
 959         DvdReadSetArea( p_input, p_input->stream.pp_areas[
 960                         p_input->stream.p_selected_area->i_id+1] );
 961         vlc_mutex_unlock( &p_input->stream.stream_lock );
 962         return 0;
 963     }
 964
 965     vlc_mutex_unlock( &p_input->stream.stream_lock );
 966
 967     return i_read;
 968 }
 969 #undef p_pgc
 970
 971 /*****************************************************************************
 972  * DVDRewind : reads a stream backward
 973  *****************************************************************************/
 974 static int DvdReadRewind( input_thread_t * p_input )
 975 {
 976     return( -1 );
 977 }
 978
 979 /*****************************************************************************
 980  * DvdReadSeek : Goes to a given position on the stream.
 981  *****************************************************************************
 982  * This one is used by the input and translate chronological position from
 983  * input to logical position on the device.
 984  * The lock should be taken before calling this function.
 985  *****************************************************************************/
 986 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 987 {
 988     thread_dvd_data_t *     p_dvd;
 989     int                     i_lb;
 990     int                     i_tmp;
 991     int                     i_chapter = 0;
 992     int                     i_cell = 0;
 993     int                     i_vobu = 0;
 994     int                     i_sub_cell = 0;
 995
 996     i_off += p_input->stream.p_selected_area->i_start;
 997     i_lb = OFF2LB( i_off );
 998     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 999
1000     /* find cell */
1001     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
1002     {
1003         i_cell++;
1004     }
1005
1006     /* find chapter */
1007     do
1008     {
1009         pgc_t *     p_pgc;
1010         int         pgc_id, pgn;
1011
1012         i_chapter++;
1013         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1014                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1015         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1016                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1017
1018         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1019         i_tmp = p_pgc->program_map[pgn-1];
1020
1021     } while( i_tmp <= i_cell );
1022
1023     /* find vobu */
1024     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1025             <= i_lb )
1026     {
1027         i_vobu++;
1028     }
1029
1030     /* find sub_cell */
1031     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1032             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1033     {
1034         i_sub_cell++;
1035     }
1036
1037 /*
1038     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1039             i_cell, i_sub_cell,i_chapter, i_vobu,
1040             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1041             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1042             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1043 */
1044     p_dvd->i_cur_block = i_lb;
1045     p_dvd->i_next_vobu =
1046         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1047     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1048     p_dvd->i_cur_cell = i_cell;
1049     p_dvd->i_chapter = i_chapter;
1050     DvdReadFindCell( p_dvd );
1051
1052     p_input->stream.p_selected_area->i_tell =
1053         LB2OFF ( p_dvd->i_cur_block )
1054          - p_input->stream.p_selected_area->i_start;
1055     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1056
1057     return;
1058 }
1059
1060 /*****************************************************************************
1061  * DvdReadHandleDSI
1062  *****************************************************************************/
1063 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1064 {
1065     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1066
1067     /*
1068      * Determine where we go next.  These values are the ones we mostly
1069      * care about.
1070      */
1071     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1072
1073     /*
1074      * If we're not at the end of this cell, we can determine the next
1075      * VOBU to display using the VOBU_SRI information section of the
1076      * DSI.  Using this value correctly follows the current angle,
1077      * avoiding the doubled scenes in The Matrix, and makes our life
1078      * really happy.
1079      */
1080     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1081     {
1082 #if 1
1083         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1084         {
1085             case 0x4:
1086                 /* interleaved unit with no angle */
1087                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1088                 {
1089                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1090                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1091                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1092                 }
1093                 else
1094                 {
1095                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1096                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1097                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1098                 }
1099                 break;
1100             case 0x5:
1101                 /* vobu is end of ilvu */
1102                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1103                 {
1104                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1105                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1106                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1107
1108                     break;
1109                 }
1110             case 0x6:
1111                 /* vobu is beginning of ilvu */
1112             case 0x9:
1113                 /* next scr is 0 */
1114             case 0xa:
1115                 /* entering interleaved section */
1116             case 0x8:
1117                 /* non interleaved cells in interleaved section */
1118             default:
1119                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1120                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1121                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1122                 break;
1123         }
1124 #else
1125         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1126             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1127         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1128 #endif
1129     }
1130     else
1131     {
1132         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1133         DvdReadFindCell( p_dvd );
1134
1135         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1136         p_dvd->i_next_vobu =
1137             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1138     }
1139
1140 #if 0
1141     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1142             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1143             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1144             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1145             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1146             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1147
1148     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1149             p_dvd->dsi_pack.sml_pbi.category,
1150             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1151             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1152             p_dvd->dsi_pack.sml_pbi.size );
1153
1154     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1155             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1156             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1157             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1158 #endif
1159 }
1160
1161 /*****************************************************************************
1162  * DvdReadFindCell
1163  *****************************************************************************/
1164 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1165 {
1166     int         pgc_id, pgn;
1167     int         i = 0;
1168     pgc_t *     p_pgc;
1169 #define cell p_dvd->p_cur_pgc->cell_playback
1170     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1171     {
1172 #if 0
1173         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1174         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1175 #else
1176         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1177
1178         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1179         {
1180             i++;
1181         }
1182         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1183 #endif
1184     }
1185     else
1186     {
1187         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1188     }
1189 #undef cell
1190     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1191                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1192     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1193                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1194     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1195
1196     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1197     {
1198         p_dvd->i_chapter++;
1199         p_dvd->b_eoc = 1;
1200     }
1201 }