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 1.17 2002/01/08 23:34:06 stef 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    ( probedata_t *p_data );
  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     p_function_list->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( probedata_t *p_data )
 146 {
 147     input_thread_t * p_input = (input_thread_t *)p_data;
 148
 149     char * psz_name = p_input->p_source;
 150
 151     if((( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ))
 152      ||(( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 )))
 153     {
 154         return 1;
 155     }
 156
 157     return 0;
 158 }
 159
 160 /*****************************************************************************
 161  * DvdReadInit: initializes DVD structures
 162  *****************************************************************************/
 163 static void DvdReadInit( input_thread_t * p_input )
 164 {
 165     thread_dvd_data_t *  p_dvd;
 166     input_area_t *       p_area;
 167     int                  i_title;
 168     int                  i_chapter;
 169     int                  i;
 170
 171     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 172     if( p_dvd == NULL )
 173     {
 174         intf_ErrMsg( "dvdread error: out of memory" );
 175         p_input->b_error = 1;
 176         return;
 177     }
 178
 179     /* we take the pointer to dvd_reader_t back  */
 180     p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
 181     p_dvd->p_title = NULL;
 182     p_dvd->p_vts_file = NULL;
 183
 184     p_input->p_plugin_data = (void *)p_dvd;
 185
 186     if( (p_input->p_method_data = input_BuffersInit()) == NULL )
 187     {
 188         free( p_dvd );
 189         p_input->b_error = 1;
 190         return;
 191     }
 192
 193     /* We read DVD_BLOCK_READ_ONCE in each loop */
 194     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 195
 196     /* Ifo allocation & initialisation */
 197     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 198     {
 199         intf_ErrMsg( "dvdread error: can't open VMG info" );
 200         input_BuffersEnd( p_input->p_method_data );
 201         free( p_dvd );
 202         p_input->b_error = 1;
 203         return;
 204     }
 205     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 206
 207     /* Set stream and area data */
 208     vlc_mutex_lock( &p_input->stream.stream_lock );
 209
 210     /* Initialize ES structures */
 211     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 212
 213     /* disc input method */
 214     p_input->stream.i_method = INPUT_METHOD_DVD;
 215
 216 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 217     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 218
 219 #define area p_input->stream.pp_areas
 220     /* We start from 1 here since the default area 0
 221      * is reserved for video_ts.vob */
 222     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 223     {
 224         input_AddArea( p_input );
 225
 226         /* Titles are Program Chains */
 227         area[i]->i_id = i;
 228
 229         /* Absolute start offset and size
 230          * We can only set that with vts ifo, so we do it during the
 231          * first call to DVDSetArea */
 232         area[i]->i_start = 0;
 233         area[i]->i_size = 0;
 234
 235         /* Number of chapters */
 236         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 237         area[i]->i_part = 1;
 238
 239         /* Number of angles */
 240         area[i]->i_angle_nb = 0;
 241         area[i]->i_angle = 1;
 242
 243         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 244     }
 245 #undef area
 246
 247     /* Get requested title - if none try the first title */
 248     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 249     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 250     {
 251         i_title = 1;
 252     }
 253
 254 #undef tt_srpt
 255
 256     /* Get requested chapter - if none defaults to first one */
 257     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 258     if( i_chapter <= 0 )
 259     {
 260         i_chapter = 1;
 261     }
 262
 263     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 264
 265     p_area = p_input->stream.pp_areas[i_title];
 266
 267     /* set title, chapter, audio and subpic */
 268     DvdReadSetArea( p_input, p_area );
 269
 270     vlc_mutex_unlock( &p_input->stream.stream_lock );
 271
 272     return;
 273 }
 274
 275 /*****************************************************************************
 276  * DvdReadOpen: open libdvdread
 277  *****************************************************************************/
 278 static void DvdReadOpen( struct input_thread_s *p_input )
 279 {
 280     dvd_reader_t    *p_dvdread;
 281
 282     vlc_mutex_lock( &p_input->stream.stream_lock );
 283
 284     /* If we are here we can control the pace... */
 285     p_input->stream.b_pace_control = 1;
 286
 287     p_input->stream.b_seekable = 1;
 288     p_input->stream.p_selected_area->i_size = 0;
 289
 290     p_input->stream.p_selected_area->i_tell = 0;
 291
 292     vlc_mutex_unlock( &p_input->stream.stream_lock );
 293
 294     /* XXX: put this shit in an access plugin */
 295     if( strlen( p_input->p_source ) > 8
 296          && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
 297     {
 298         p_dvdread = DVDOpen( p_input->p_source + 8 );
 299     }
 300     else if( strlen( p_input->p_source ) > 4
 301          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 302     {
 303         p_dvdread = DVDOpen( p_input->p_source + 4 );
 304     }
 305     else
 306     {
 307         p_dvdread = DVDOpen( p_input->p_source );
 308     }
 309
 310     if( ! p_dvdread )
 311     {
 312         p_input->b_error = 1;
 313         return;
 314     }
 315
 316     /* the vlc input doesn't handle the file descriptor with libdvdread */
 317     p_input->i_handle = -1;
 318
 319     /* p_dvdread is stored in p_plugin_data until we have
 320      * malloc'ed a dvd_thread_data_t */
 321     p_input->p_plugin_data = (void *) p_dvdread;
 322 }
 323
 324 /*****************************************************************************
 325  * DvdReadClose: close libdvdread
 326  *****************************************************************************/
 327 static void DvdReadClose( struct input_thread_s *p_input )
 328 {
 329     DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
 330     free( p_input->p_plugin_data );
 331     p_input->p_plugin_data = NULL;
 332
 333 }
 334
 335 /*****************************************************************************
 336  * DvdReadEnd: frees unused data
 337  *****************************************************************************/
 338 static void DvdReadEnd( input_thread_t * p_input )
 339 {
 340     thread_dvd_data_t *     p_dvd;
 341
 342     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 343
 344     /* close libdvdread */
 345     DVDCloseFile( p_dvd->p_title );
 346     ifoClose( p_dvd->p_vts_file );
 347     ifoClose( p_dvd->p_vmg_file );
 348
 349     input_BuffersEnd( p_input->p_method_data );
 350 }
 351
 352 /*****************************************************************************
 353  * DvdReadSetProgram: Does nothing, a DVD is mono-program
 354  *****************************************************************************/
 355 static int DvdReadSetProgram( input_thread_t * p_input,
 356                               pgrm_descriptor_t * p_program )
 357 {
 358     return 0;
 359 }
 360
 361 #define p_pgc         p_dvd->p_cur_pgc
 362
 363 /*****************************************************************************
 364  * DvdReadSetArea: initialize input data for title x, chapter y.
 365  * It should be called for each user navigation request.
 366  *****************************************************************************
 367  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 368  * Note that you have to take the lock before entering here.
 369  *****************************************************************************/
 370 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 371 {
 372     thread_dvd_data_t *  p_dvd;
 373     int                  pgc_id = 0;
 374     int                  pgn = 0;
 375
 376     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 377
 378     /* we can't use the interface slider until initilization is complete */
 379     p_input->stream.b_seekable = 0;
 380
 381     if( p_area != p_input->stream.p_selected_area )
 382     {
 383         es_descriptor_t *    p_es;
 384         int                  i_cell = 0;
 385         int                  i_audio_nb = 0;
 386         int                  i_spu_nb = 0;
 387         int                  i;
 388
 389 #define p_vmg         p_dvd->p_vmg_file
 390 #define p_vts         p_dvd->p_vts_file
 391         if( p_dvd->p_title != NULL )
 392         {
 393             DVDCloseFile( p_dvd->p_title );
 394         }
 395
 396         if( p_vts != NULL )
 397         {
 398             ifoClose( p_vts );
 399         }
 400
 401         /* Reset the Chapter position of the old title */
 402         p_input->stream.p_selected_area->i_part = 1;
 403
 404         /*
 405          *  We have to load all title information
 406          */
 407         /* Change the default area */
 408         p_input->stream.p_selected_area = p_area;
 409
 410         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 411             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 412             p_area->i_id );
 413
 414         /* ifo vts */
 415         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 416                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 417         {
 418             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 419             ifoClose( p_vmg );
 420             DVDClose( p_dvd->p_dvdread );
 421             p_input->b_error = 1;
 422             return -1;
 423         }
 424
 425         /* title position inside the selected vts */
 426         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 427
 428         /*
 429          * Set selected title start
 430          */
 431         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 432         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 433         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 434         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 435
 436         p_area->i_start =
 437             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 438
 439         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 440                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 441
 442         /*
 443          * Find title end
 444          */
 445         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 446
 447         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 448         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 449
 450         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 451                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 452
 453         /*
 454          * Set properties for current chapter
 455          */
 456         /* Remeber current chapter */
 457         p_dvd->i_chapter = p_area->i_part;
 458         p_dvd->b_eoc = 0;
 459
 460         pgc_id = p_vts->vts_ptt_srpt->title[
 461                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 462         pgn = p_vts->vts_ptt_srpt->title[
 463                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 464
 465         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 466         p_dvd->i_pack_len = 0;
 467         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 468         DvdReadFindCell( p_dvd );
 469
 470         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 471             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 472
 473         /*
 474          * Angle management
 475          */
 476         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 477         p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 478
 479         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 480         {
 481             p_area->i_angle = 1;
 482         }
 483         p_dvd->i_angle = p_area->i_angle;
 484         p_dvd->i_angle_nb = p_area->i_angle_nb;
 485
 486         /*
 487          * We've got enough info, time to open the title set data.
 488          */
 489         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 490             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 491             DVD_READ_TITLE_VOBS ) ) )
 492         {
 493             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 494                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 495             ifoClose( p_vts );
 496             ifoClose( p_vmg );
 497             DVDClose( p_dvd->p_dvdread );
 498             return -1;
 499         }
 500
 501 //        IfoPrintTitle( p_dvd );
 502
 503         /*
 504          * Destroy obsolete ES by reinitializing program 0
 505          * and find all ES in title with ifo data
 506          */
 507         if( p_input->stream.pp_programs != NULL )
 508         {
 509             /* We don't use input_EndStream here since
 510              * we keep area structures */
 511
 512             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 513             {
 514                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 515             }
 516
 517             free( p_input->stream.pp_selected_es );
 518             input_DelProgram( p_input, p_input->stream.p_selected_program );
 519
 520             p_input->stream.pp_selected_es = NULL;
 521             p_input->stream.i_selected_es_number = 0;
 522         }
 523
 524         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 525         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 526
 527         /* No PSM to read in DVD mode, we already have all information */
 528         p_input->stream.p_selected_program->b_is_ok = 1;
 529
 530         p_es = NULL;
 531
 532         /* ES 0 -> video MPEG2 */
 533 //        IfoPrintVideo( p_dvd );
 534
 535         p_es = input_AddES( p_input, p_input->stream.p_selected_program, 0xe0, 0 );
 536         p_es->i_stream_id = 0xe0;
 537         p_es->i_type = MPEG2_VIDEO_ES;
 538         p_es->i_cat = VIDEO_ES;
 539         if( p_main->b_video )
 540         {
 541             input_SelectES( p_input, p_es );
 542         }
 543
 544 #define audio_control \
 545     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 546         /* Audio ES, in the order they appear in .ifo */
 547         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 548         {
 549             int i_position = 0;
 550             u16 i_id;
 551
 552 //            IfoPrintAudio( p_dvd, i );
 553
 554             /* audio channel is active if first byte is 0x80 */
 555             if( audio_control & 0x8000 )
 556             {
 557                 i_audio_nb++;
 558                 i_position = ( audio_control & 0x7F00 ) >> 8;
 559
 560             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 561                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 562                 {
 563                 case 0x00:              /* AC3 */
 564                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 565                     p_es = input_AddES( p_input,
 566                                p_input->stream.p_selected_program, i_id, 0 );
 567                     p_es->i_stream_id = 0xbd;
 568                     p_es->i_type = AC3_AUDIO_ES;
 569                     p_es->b_audio = 1;
 570                     p_es->i_cat = AUDIO_ES;
 571                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 572                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 573                     strcat( p_es->psz_desc, " (ac3)" );
 574
 575                     break;
 576                 case 0x02:
 577                 case 0x03:              /* MPEG audio */
 578                     i_id = 0xc0 + i_position;
 579                     p_es = input_AddES( p_input,
 580                                     p_input->stream.p_selected_program, i_id, 0 );
 581                     p_es->i_stream_id = i_id;
 582                     p_es->i_type = MPEG2_AUDIO_ES;
 583                     p_es->b_audio = 1;
 584                     p_es->i_cat = AUDIO_ES;
 585                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 586                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 587                     strcat( p_es->psz_desc, " (mpeg)" );
 588
 589                     break;
 590                 case 0x04:              /* LPCM */
 591
 592                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 593                     p_es = input_AddES( p_input,
 594                                     p_input->stream.p_selected_program, i_id, 0 );
 595                     p_es->i_stream_id = i_id;
 596                     p_es->i_type = LPCM_AUDIO_ES;
 597                     p_es->b_audio = 1;
 598                     p_es->i_cat = AUDIO_ES;
 599                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 600                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 601                     strcat( p_es->psz_desc, " (lpcm)" );
 602
 603                     break;
 604                 case 0x06:              /* DTS */
 605                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 606                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 607                                  "(0x%x)", i_id );
 608                     break;
 609                 default:
 610                     i_id = 0;
 611                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 612                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 613                 }
 614             }
 615         }
 616 #undef audio_control
 617 #define spu_control \
 618     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 619
 620         /* Sub Picture ES */
 621
 622         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 623         {
 624             int i_position = 0;
 625             u16 i_id;
 626
 627 //            IfoPrintSpu( p_dvd, i );
 628             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 629
 630             if( spu_control & 0x80000000 )
 631             {
 632                 i_spu_nb++;
 633
 634                 /*  there are several streams for one spu */
 635                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 636                 {
 637                     /* 16:9 */
 638                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 639                     {
 640                     case 1:
 641                         i_position = spu_control & 0xff;
 642                         break;
 643                     case 2:
 644                         i_position = ( spu_control >> 8 ) & 0xff;
 645                         break;
 646                     default:
 647                         i_position = ( spu_control >> 16 ) & 0xff;
 648                         break;
 649                     }
 650                 }
 651                 else
 652                 {
 653                     /* 4:3 */
 654                     i_position = ( spu_control >> 24 ) & 0x7F;
 655                 }
 656
 657                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 658                 p_es = input_AddES( p_input,
 659                                     p_input->stream.p_selected_program, i_id, 0 );
 660                 p_es->i_stream_id = 0xbd;
 661                 p_es->i_type = DVD_SPU_ES;
 662                 p_es->i_cat = SPU_ES;
 663                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 664                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 665             }
 666         }
 667 #undef spu_control
 668         if( p_main->b_audio )
 669         {
 670             /* For audio: first one if none or a not existing one specified */
 671             int i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 672             if( i_audio < 0 || i_audio > i_audio_nb )
 673             {
 674                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 675                 i_audio = 1;
 676             }
 677             if( i_audio > 0 && i_audio_nb > 0 )
 678             {
 679                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 680                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 681                       REQUESTED_AC3 ) )
 682                 {
 683                     int     i_ac3 = i_audio;
 684                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 685                              AC3_AUDIO_ES ) && ( i_ac3 <=
 686                              p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
 687                     {
 688                         i_ac3++;
 689                     }
 690                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 691                     {
 692                         input_SelectES( p_input,
 693                                         p_input->stream.pp_es[i_ac3] );
 694                     }
 695                 }
 696                 else
 697                 {
 698                     input_SelectES( p_input,
 699                                     p_input->stream.pp_es[i_audio] );
 700                 }
 701             }
 702         }
 703
 704         if( p_main->b_video )
 705         {
 706             /* for spu, default is none */
 707             int i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 708             if( i_spu < 0 || i_spu > i_spu_nb )
 709             {
 710                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 711                 i_spu = 0;
 712             }
 713             if( i_spu > 0 && i_spu_nb > 0 )
 714             {
 715                 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
 716                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 717             }
 718         }
 719     } /* i_title >= 0 */
 720     else
 721     {
 722         p_area = p_input->stream.p_selected_area;
 723     }
 724
 725     /*
 726      * Chapter selection
 727      */
 728
 729     if( p_area->i_part != p_dvd->i_chapter )
 730     {
 731         if( ( p_area->i_part > 0 ) &&
 732             ( p_area->i_part <= p_area->i_part_nb ))
 733         {
 734             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 735             pgc_id = p_vts->vts_ptt_srpt->title[
 736                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 737             pgn = p_vts->vts_ptt_srpt->title[
 738                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 739
 740             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 741
 742             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 743             p_dvd->i_chapter = p_area->i_part;
 744             DvdReadFindCell( p_dvd );
 745
 746             p_dvd->i_pack_len = 0;
 747             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 748                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 749         }
 750         else
 751         {
 752             p_area->i_part = p_dvd->i_chapter;
 753         }
 754     }
 755 #undef p_vts
 756 #undef p_vmg
 757
 758     if( p_area->i_angle != p_dvd->i_angle )
 759     {
 760         p_dvd->i_angle = p_area->i_angle;
 761
 762         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 763     }
 764     /* warn interface that something has changed */
 765     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 766     p_input->stream.b_seekable = 1;
 767     p_input->stream.b_changed = 1;
 768
 769     return 0;
 770 }
 771
 772
 773 /*****************************************************************************
 774  * DvdReadRead: reads data packets into the netlist.
 775  *****************************************************************************
 776  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 777  * EOF.
 778  *****************************************************************************/
 779 static int DvdReadRead( input_thread_t * p_input,
 780                         data_packet_t ** pp_data )
 781 {
 782     thread_dvd_data_t *     p_dvd;
 783     u8                      p_data[DVD_VIDEO_LB_LEN];
 784     struct iovec            p_vec[DVD_BLOCK_READ_ONCE];
 785     u8 *                    pi_cur;
 786     int                     i_blocks;
 787     int                     i_read;
 788     int                     i_iovec;
 789     int                     i_packet_size;
 790     int                     i_packet;
 791     int                     i_pos;
 792     data_packet_t *         p_data_p;
 793     boolean_t               b_eot = 0;
 794
 795     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 796
 797     *pp_data = NULL;
 798
 799     /*
 800      * Playback by cell in this pgc, starting at the cell for our chapter.
 801      */
 802
 803     /*
 804      * End of pack, we select the following one
 805      */
 806     if( ! p_dvd->i_pack_len )
 807     {
 808         /*
 809          * Read NAV packet.
 810          */
 811         if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 812                        1, p_data ) ) != 1 )
 813         {
 814             intf_ErrMsg( "dvdread error: read failed for block %d",
 815                          p_dvd->i_next_vobu );
 816             return -1;
 817         }
 818
 819         /* basic check to be sure we don't have a empty title
 820          * go to next title if so */
 821         assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
 822         if( p_data[41] == 0xbf && p_data[1027] == 0xbf )
 823         {
 824             /*
 825              * Parse the contained dsi packet.
 826              */
 827
 828             DvdReadHandleDSI( p_dvd, p_data );
 829
 830             /* End of File */
 831             if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 832             {
 833                 return 1;
 834             }
 835
 836             assert( p_dvd->i_pack_len < 1024 );
 837             /* FIXME: Ugly kludge: we send the pack block to the input for it
 838              * sometimes has a zero scr and restart the sync */
 839             //p_dvd->i_cur_block ++;
 840             p_dvd->i_pack_len++;
 841         }
 842         else
 843         {
 844             b_eot = 1;
 845             p_dvd->i_pack_len = 0;
 846             return 1;
 847         }
 848     }
 849
 850     /*
 851      * Compute the number of blocks to read
 852      */
 853     i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
 854              ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
 855     p_dvd->i_pack_len -= i_blocks;
 856
 857     /* Get iovecs */
 858     *pp_data = p_data_p = input_BuffersToIO( p_input->p_method_data, p_vec,
 859                                              DVD_BLOCK_READ_ONCE );
 860
 861     if ( p_data_p == NULL )
 862     {
 863         return( -1 );
 864     }
 865
 866     /* Reads from DVD */
 867     i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 868                              i_blocks, p_vec );
 869     if( i_read != i_blocks )
 870     {
 871         intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 872                      i_read, i_blocks, p_dvd->i_cur_block );
 873         return -1;
 874     }
 875
 876     p_dvd->i_cur_block += i_read;
 877 /*
 878     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 879 */
 880     i_packet = 0;
 881
 882     /* Read headers to compute payload length */
 883     for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
 884     {
 885         data_packet_t * p_current = p_data_p;
 886         i_pos = 0;
 887
 888         while( i_pos < DVD_VIDEO_LB_LEN )
 889         {
 890             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 891
 892             /*default header */
 893             if( U32_AT( pi_cur ) != 0x1BA )
 894             {
 895                 /* That's the case for all packets, except pack header. */
 896                 i_packet_size = U16_AT( pi_cur + 4 );
 897             }
 898             else
 899             {
 900                 /* MPEG-2 Pack header. */
 901                 i_packet_size = 8;
 902             }
 903             if( i_pos != 0 )
 904             {
 905                 *pp_data = input_ShareBuffer( p_input->p_method_data,
 906                                               p_current );
 907             }
 908             else
 909             {
 910                 *pp_data = p_data_p;
 911                 p_data_p = p_data_p->p_next;
 912             }
 913
 914             (*pp_data)->p_payload_start = (*pp_data)->p_demux_start =
 915                     (*pp_data)->p_demux_start + i_pos;
 916
 917
 918             (*pp_data)->p_payload_end =
 919                     (*pp_data)->p_payload_start + i_packet_size + 6;
 920
 921 //            pp_packets[i_packet]->p_next = NULL;
 922 //            pp_packets[i_packet]->b_discard_payload = 0;
 923
 924             i_packet++;
 925             i_pos += i_packet_size + 6;
 926             pp_data = &(*pp_data)->p_next;
 927         }
 928     }
 929
 930     p_input->pf_delete_packet( p_input->p_method_data, p_data_p );
 931     *pp_data = NULL;
 932
 933     vlc_mutex_lock( &p_input->stream.stream_lock );
 934
 935     p_input->stream.p_selected_area->i_tell =
 936         LB2OFF( p_dvd->i_cur_block ) -
 937             p_input->stream.p_selected_area->i_start;
 938
 939     if( p_dvd->b_eoc )
 940     {
 941         /* We modify i_part only at end of chapter not to erase
 942          * some modification from the interface */
 943         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 944         p_dvd->b_eoc = 0;
 945     }
 946
 947     if( p_input->stream.p_selected_area->i_tell
 948             >= p_input->stream.p_selected_area->i_size || b_eot )
 949     {
 950         if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
 951                         p_input->stream.i_area_nb )
 952         {
 953             /* EOF */
 954             vlc_mutex_unlock( &p_input->stream.stream_lock );
 955             return 1;
 956         }
 957
 958         /* EOT */
 959         intf_WarnMsg( 4, "dvd info: new title" );
 960         DvdReadSetArea( p_input, p_input->stream.pp_areas[
 961                         p_input->stream.p_selected_area->i_id+1] );
 962         vlc_mutex_unlock( &p_input->stream.stream_lock );
 963         return 0;
 964     }
 965
 966     vlc_mutex_unlock( &p_input->stream.stream_lock );
 967
 968     return i_read;
 969 }
 970 #undef p_pgc
 971
 972 /*****************************************************************************
 973  * DVDRewind : reads a stream backward
 974  *****************************************************************************/
 975 static int DvdReadRewind( input_thread_t * p_input )
 976 {
 977     return( -1 );
 978 }
 979
 980 /*****************************************************************************
 981  * DvdReadSeek : Goes to a given position on the stream.
 982  *****************************************************************************
 983  * This one is used by the input and translate chronological position from
 984  * input to logical position on the device.
 985  * The lock should be taken before calling this function.
 986  *****************************************************************************/
 987 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 988 {
 989     thread_dvd_data_t *     p_dvd;
 990     int                     i_lb;
 991     int                     i_tmp;
 992     int                     i_chapter = 0;
 993     int                     i_cell = 0;
 994     int                     i_vobu = 0;
 995     int                     i_sub_cell = 0;
 996
 997     i_off += p_input->stream.p_selected_area->i_start;
 998     i_lb = OFF2LB( i_off );
 999     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1000
1001     /* find cell */
1002     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
1003     {
1004         i_cell++;
1005     }
1006
1007     /* find chapter */
1008     do
1009     {
1010         pgc_t *     p_pgc;
1011         int         pgc_id, pgn;
1012
1013         i_chapter++;
1014         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1015                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1016         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1017                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1018
1019         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1020         i_tmp = p_pgc->program_map[pgn-1];
1021
1022     } while( i_tmp <= i_cell );
1023
1024     /* find vobu */
1025     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1026             <= i_lb )
1027     {
1028         i_vobu++;
1029     }
1030
1031     /* find sub_cell */
1032     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1033             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1034     {
1035         i_sub_cell++;
1036     }
1037
1038 /*
1039     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1040             i_cell, i_sub_cell,i_chapter, i_vobu,
1041             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1042             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1043             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1044 */
1045     p_dvd->i_cur_block = i_lb;
1046     p_dvd->i_next_vobu =
1047         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1048     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1049     p_dvd->i_cur_cell = i_cell;
1050     p_dvd->i_chapter = i_chapter;
1051     DvdReadFindCell( p_dvd );
1052
1053     p_input->stream.p_selected_area->i_tell =
1054         LB2OFF ( p_dvd->i_cur_block )
1055          - p_input->stream.p_selected_area->i_start;
1056     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1057
1058     return;
1059 }
1060
1061 /*****************************************************************************
1062  * DvdReadHandleDSI
1063  *****************************************************************************/
1064 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1065 {
1066     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1067
1068     /*
1069      * Determine where we go next.  These values are the ones we mostly
1070      * care about.
1071      */
1072     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1073
1074     /*
1075      * If we're not at the end of this cell, we can determine the next
1076      * VOBU to display using the VOBU_SRI information section of the
1077      * DSI.  Using this value correctly follows the current angle,
1078      * avoiding the doubled scenes in The Matrix, and makes our life
1079      * really happy.
1080      */
1081     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1082     {
1083 #if 1
1084         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1085         {
1086             case 0x4:
1087                 /* interleaved unit with no angle */
1088                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1089                 {
1090                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1091                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1092                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1093                 }
1094                 else
1095                 {
1096                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1097                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1098                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1099                 }
1100                 break;
1101             case 0x5:
1102                 /* vobu is end of ilvu */
1103                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1104                 {
1105                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1106                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1107                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1108
1109                     break;
1110                 }
1111             case 0x6:
1112                 /* vobu is beginning of ilvu */
1113             case 0x9:
1114                 /* next scr is 0 */
1115             case 0xa:
1116                 /* entering interleaved section */
1117             case 0x8:
1118                 /* non interleaved cells in interleaved section */
1119             default:
1120                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1121                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1122                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1123                 break;
1124         }
1125 #else
1126         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1127             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1128         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1129 #endif
1130     }
1131     else
1132     {
1133         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1134         DvdReadFindCell( p_dvd );
1135
1136         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1137         p_dvd->i_next_vobu =
1138             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1139     }
1140
1141 #if 0
1142     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1143             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1144             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1145             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1146             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1147             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1148
1149     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1150             p_dvd->dsi_pack.sml_pbi.category,
1151             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1152             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1153             p_dvd->dsi_pack.sml_pbi.size );
1154
1155     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1156             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1157             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1158             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1159 #endif
1160 }
1161
1162 /*****************************************************************************
1163  * DvdReadFindCell
1164  *****************************************************************************/
1165 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1166 {
1167     int         pgc_id, pgn;
1168     int         i = 0;
1169     pgc_t *     p_pgc;
1170 #define cell p_dvd->p_cur_pgc->cell_playback
1171     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1172     {
1173 #if 0
1174         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1175         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1176 #else
1177         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1178
1179         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1180         {
1181             i++;
1182         }
1183         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1184 #endif
1185     }
1186     else
1187     {
1188         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1189     }
1190 #undef cell
1191     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1192                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1193     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1194                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1195     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1196
1197     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1198     {
1199         p_dvd->i_chapter++;
1200         p_dvd->b_eoc = 1;
1201     }
1202 }