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 1.19 2002/01/15 19:01:28 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     p_input->stream.i_method = INPUT_METHOD_DVD;
 285
 286     /* If we are here we can control the pace... */
 287     p_input->stream.b_pace_control = 1;
 288     p_input->stream.b_seekable = 1;
 289
 290     p_input->stream.p_selected_area->i_size = 0;
 291     p_input->stream.p_selected_area->i_tell = 0;
 292
 293     vlc_mutex_unlock( &p_input->stream.stream_lock );
 294
 295     /* XXX: put this shit in an access plugin */
 296     if( strlen( p_input->p_source ) > 8
 297          && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
 298     {
 299         p_dvdread = DVDOpen( p_input->p_source + 8 );
 300     }
 301     else if( strlen( p_input->p_source ) > 4
 302          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 303     {
 304         p_dvdread = DVDOpen( p_input->p_source + 4 );
 305     }
 306     else
 307     {
 308         p_dvdread = DVDOpen( p_input->p_source );
 309     }
 310
 311     if( ! p_dvdread )
 312     {
 313         p_input->b_error = 1;
 314         return;
 315     }
 316
 317     /* the vlc input doesn't handle the file descriptor with libdvdread */
 318     p_input->i_handle = -1;
 319
 320     /* p_dvdread is stored in p_plugin_data until we have
 321      * malloc'ed a dvd_thread_data_t */
 322     p_input->p_plugin_data = (void *) p_dvdread;
 323 }
 324
 325 /*****************************************************************************
 326  * DvdReadClose: close libdvdread
 327  *****************************************************************************/
 328 static void DvdReadClose( struct input_thread_s *p_input )
 329 {
 330     DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
 331     free( p_input->p_plugin_data );
 332     p_input->p_plugin_data = NULL;
 333
 334 }
 335
 336 /*****************************************************************************
 337  * DvdReadEnd: frees unused data
 338  *****************************************************************************/
 339 static void DvdReadEnd( input_thread_t * p_input )
 340 {
 341     thread_dvd_data_t *     p_dvd;
 342
 343     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 344
 345     /* close libdvdread */
 346     DVDCloseFile( p_dvd->p_title );
 347     ifoClose( p_dvd->p_vts_file );
 348     ifoClose( p_dvd->p_vmg_file );
 349
 350     input_BuffersEnd( p_input->p_method_data );
 351 }
 352
 353 /*****************************************************************************
 354  * DvdReadSetProgram: Does nothing, a DVD is mono-program
 355  *****************************************************************************/
 356 static int DvdReadSetProgram( input_thread_t * p_input,
 357                               pgrm_descriptor_t * p_program )
 358 {
 359     return 0;
 360 }
 361
 362 #define p_pgc         p_dvd->p_cur_pgc
 363
 364 /*****************************************************************************
 365  * DvdReadSetArea: initialize input data for title x, chapter y.
 366  * It should be called for each user navigation request.
 367  *****************************************************************************
 368  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 369  * Note that you have to take the lock before entering here.
 370  *****************************************************************************/
 371 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 372 {
 373     thread_dvd_data_t *  p_dvd;
 374     int                  pgc_id = 0;
 375     int                  pgn = 0;
 376
 377     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 378
 379     /* we can't use the interface slider until initilization is complete */
 380     p_input->stream.b_seekable = 0;
 381
 382     if( p_area != p_input->stream.p_selected_area )
 383     {
 384         es_descriptor_t *    p_es;
 385         int                  i_cell = 0;
 386         int                  i_audio_nb = 0;
 387         int                  i_spu_nb = 0;
 388         int                  i;
 389
 390 #define p_vmg         p_dvd->p_vmg_file
 391 #define p_vts         p_dvd->p_vts_file
 392         if( p_dvd->p_title != NULL )
 393         {
 394             DVDCloseFile( p_dvd->p_title );
 395         }
 396
 397         if( p_vts != NULL )
 398         {
 399             ifoClose( p_vts );
 400         }
 401
 402         /* Reset the Chapter position of the old title */
 403         p_input->stream.p_selected_area->i_part = 1;
 404
 405         /*
 406          *  We have to load all title information
 407          */
 408         /* Change the default area */
 409         p_input->stream.p_selected_area = p_area;
 410
 411         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 412             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 413             p_area->i_id );
 414
 415         /* ifo vts */
 416         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 417                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 418         {
 419             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 420             ifoClose( p_vmg );
 421             DVDClose( p_dvd->p_dvdread );
 422             p_input->b_error = 1;
 423             return -1;
 424         }
 425
 426         /* title position inside the selected vts */
 427         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 428
 429         /*
 430          * Set selected title start
 431          */
 432         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 433         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 434         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 435         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 436
 437         p_area->i_start =
 438             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 439
 440         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 441                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 442
 443         /*
 444          * Find title end
 445          */
 446         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 447
 448         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 449         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 450
 451         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 452                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 453
 454         /*
 455          * Set properties for current chapter
 456          */
 457         /* Remeber current chapter */
 458         p_dvd->i_chapter = p_area->i_part;
 459         p_dvd->b_eoc = 0;
 460
 461         pgc_id = p_vts->vts_ptt_srpt->title[
 462                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 463         pgn = p_vts->vts_ptt_srpt->title[
 464                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 465
 466         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 467         p_dvd->i_pack_len = 0;
 468         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 469         DvdReadFindCell( p_dvd );
 470
 471         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 472             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 473
 474         /*
 475          * Angle management
 476          */
 477         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 478         p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 479
 480         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 481         {
 482             p_area->i_angle = 1;
 483         }
 484         p_dvd->i_angle = p_area->i_angle;
 485         p_dvd->i_angle_nb = p_area->i_angle_nb;
 486
 487         /*
 488          * We've got enough info, time to open the title set data.
 489          */
 490         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 491             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 492             DVD_READ_TITLE_VOBS ) ) )
 493         {
 494             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 495                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 496             ifoClose( p_vts );
 497             ifoClose( p_vmg );
 498             DVDClose( p_dvd->p_dvdread );
 499             return -1;
 500         }
 501
 502 //        IfoPrintTitle( p_dvd );
 503
 504         /*
 505          * Destroy obsolete ES by reinitializing program 0
 506          * and find all ES in title with ifo data
 507          */
 508         if( p_input->stream.pp_programs != NULL )
 509         {
 510             /* We don't use input_EndStream here since
 511              * we keep area structures */
 512
 513             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 514             {
 515                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 516             }
 517
 518             free( p_input->stream.pp_selected_es );
 519             input_DelProgram( p_input, p_input->stream.p_selected_program );
 520
 521             p_input->stream.pp_selected_es = NULL;
 522             p_input->stream.i_selected_es_number = 0;
 523         }
 524
 525         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 526         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 527
 528         /* No PSM to read in DVD mode, we already have all information */
 529         p_input->stream.p_selected_program->b_is_ok = 1;
 530
 531         p_es = NULL;
 532
 533         /* ES 0 -> video MPEG2 */
 534 //        IfoPrintVideo( p_dvd );
 535
 536         p_es = input_AddES( p_input, p_input->stream.p_selected_program, 0xe0, 0 );
 537         p_es->i_stream_id = 0xe0;
 538         p_es->i_type = MPEG2_VIDEO_ES;
 539         p_es->i_cat = VIDEO_ES;
 540         if( p_main->b_video )
 541         {
 542             input_SelectES( p_input, p_es );
 543         }
 544
 545 #define audio_control \
 546     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 547         /* Audio ES, in the order they appear in .ifo */
 548         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 549         {
 550             int i_position = 0;
 551             u16 i_id;
 552
 553 //            IfoPrintAudio( p_dvd, i );
 554
 555             /* audio channel is active if first byte is 0x80 */
 556             if( audio_control & 0x8000 )
 557             {
 558                 i_audio_nb++;
 559                 i_position = ( audio_control & 0x7F00 ) >> 8;
 560
 561             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 562                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 563                 {
 564                 case 0x00:              /* AC3 */
 565                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 566                     p_es = input_AddES( p_input,
 567                                p_input->stream.p_selected_program, i_id, 0 );
 568                     p_es->i_stream_id = 0xbd;
 569                     p_es->i_type = AC3_AUDIO_ES;
 570                     p_es->b_audio = 1;
 571                     p_es->i_cat = AUDIO_ES;
 572                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 573                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 574                     strcat( p_es->psz_desc, " (ac3)" );
 575
 576                     break;
 577                 case 0x02:
 578                 case 0x03:              /* MPEG audio */
 579                     i_id = 0xc0 + i_position;
 580                     p_es = input_AddES( p_input,
 581                                     p_input->stream.p_selected_program, i_id, 0 );
 582                     p_es->i_stream_id = i_id;
 583                     p_es->i_type = MPEG2_AUDIO_ES;
 584                     p_es->b_audio = 1;
 585                     p_es->i_cat = AUDIO_ES;
 586                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 587                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 588                     strcat( p_es->psz_desc, " (mpeg)" );
 589
 590                     break;
 591                 case 0x04:              /* LPCM */
 592
 593                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 594                     p_es = input_AddES( p_input,
 595                                     p_input->stream.p_selected_program, i_id, 0 );
 596                     p_es->i_stream_id = i_id;
 597                     p_es->i_type = LPCM_AUDIO_ES;
 598                     p_es->b_audio = 1;
 599                     p_es->i_cat = AUDIO_ES;
 600                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 601                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 602                     strcat( p_es->psz_desc, " (lpcm)" );
 603
 604                     break;
 605                 case 0x06:              /* DTS */
 606                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 607                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 608                                  "(0x%x)", i_id );
 609                     break;
 610                 default:
 611                     i_id = 0;
 612                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 613                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 614                 }
 615             }
 616         }
 617 #undef audio_control
 618 #define spu_control \
 619     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 620
 621         /* Sub Picture ES */
 622
 623         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 624         {
 625             int i_position = 0;
 626             u16 i_id;
 627
 628 //            IfoPrintSpu( p_dvd, i );
 629             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 630
 631             if( spu_control & 0x80000000 )
 632             {
 633                 i_spu_nb++;
 634
 635                 /*  there are several streams for one spu */
 636                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 637                 {
 638                     /* 16:9 */
 639                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 640                     {
 641                     case 1:
 642                         i_position = spu_control & 0xff;
 643                         break;
 644                     case 2:
 645                         i_position = ( spu_control >> 8 ) & 0xff;
 646                         break;
 647                     default:
 648                         i_position = ( spu_control >> 16 ) & 0xff;
 649                         break;
 650                     }
 651                 }
 652                 else
 653                 {
 654                     /* 4:3 */
 655                     i_position = ( spu_control >> 24 ) & 0x7F;
 656                 }
 657
 658                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 659                 p_es = input_AddES( p_input,
 660                                     p_input->stream.p_selected_program, i_id, 0 );
 661                 p_es->i_stream_id = 0xbd;
 662                 p_es->i_type = DVD_SPU_ES;
 663                 p_es->i_cat = SPU_ES;
 664                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 665                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 666             }
 667         }
 668 #undef spu_control
 669         if( p_main->b_audio )
 670         {
 671             /* For audio: first one if none or a not existing one specified */
 672             int i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 673             if( i_audio < 0 || i_audio > i_audio_nb )
 674             {
 675                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 676                 i_audio = 1;
 677             }
 678             if( i_audio > 0 && i_audio_nb > 0 )
 679             {
 680                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 681                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 682                       REQUESTED_AC3 ) )
 683                 {
 684                     int     i_ac3 = i_audio;
 685                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 686                              AC3_AUDIO_ES ) && ( i_ac3 <=
 687                              p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
 688                     {
 689                         i_ac3++;
 690                     }
 691                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 692                     {
 693                         input_SelectES( p_input,
 694                                         p_input->stream.pp_es[i_ac3] );
 695                     }
 696                 }
 697                 else
 698                 {
 699                     input_SelectES( p_input,
 700                                     p_input->stream.pp_es[i_audio] );
 701                 }
 702             }
 703         }
 704
 705         if( p_main->b_video )
 706         {
 707             /* for spu, default is none */
 708             int i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 709             if( i_spu < 0 || i_spu > i_spu_nb )
 710             {
 711                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 712                 i_spu = 0;
 713             }
 714             if( i_spu > 0 && i_spu_nb > 0 )
 715             {
 716                 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
 717                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 718             }
 719         }
 720     } /* i_title >= 0 */
 721     else
 722     {
 723         p_area = p_input->stream.p_selected_area;
 724     }
 725
 726     /*
 727      * Chapter selection
 728      */
 729
 730     if( p_area->i_part != p_dvd->i_chapter )
 731     {
 732         if( ( p_area->i_part > 0 ) &&
 733             ( p_area->i_part <= p_area->i_part_nb ))
 734         {
 735             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 736             pgc_id = p_vts->vts_ptt_srpt->title[
 737                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 738             pgn = p_vts->vts_ptt_srpt->title[
 739                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 740
 741             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 742
 743             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 744             p_dvd->i_chapter = p_area->i_part;
 745             DvdReadFindCell( p_dvd );
 746
 747             p_dvd->i_pack_len = 0;
 748             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 749                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 750         }
 751         else
 752         {
 753             p_area->i_part = p_dvd->i_chapter;
 754         }
 755     }
 756 #undef p_vts
 757 #undef p_vmg
 758
 759     if( p_area->i_angle != p_dvd->i_angle )
 760     {
 761         p_dvd->i_angle = p_area->i_angle;
 762
 763         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 764     }
 765     /* warn interface that something has changed */
 766     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 767     p_input->stream.b_seekable = 1;
 768     p_input->stream.b_changed = 1;
 769
 770     return 0;
 771 }
 772
 773
 774 /*****************************************************************************
 775  * DvdReadRead: reads data packets into the netlist.
 776  *****************************************************************************
 777  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 778  * EOF.
 779  *****************************************************************************/
 780 static int DvdReadRead( input_thread_t * p_input,
 781                         data_packet_t ** pp_data )
 782 {
 783     thread_dvd_data_t *     p_dvd;
 784     u8                      p_data[DVD_VIDEO_LB_LEN];
 785     struct iovec            p_vec[DVD_BLOCK_READ_ONCE];
 786     u8 *                    pi_cur;
 787     int                     i_blocks;
 788     int                     i_read;
 789     int                     i_iovec;
 790     int                     i_packet_size;
 791     int                     i_packet;
 792     int                     i_pos;
 793     data_packet_t *         p_data_p;
 794     boolean_t               b_eot = 0;
 795
 796     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 797
 798     *pp_data = NULL;
 799
 800     /*
 801      * Playback by cell in this pgc, starting at the cell for our chapter.
 802      */
 803
 804     /*
 805      * End of pack, we select the following one
 806      */
 807     if( ! p_dvd->i_pack_len )
 808     {
 809         /*
 810          * Read NAV packet.
 811          */
 812         if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 813                        1, p_data ) ) != 1 )
 814         {
 815             intf_ErrMsg( "dvdread error: read failed for block %d",
 816                          p_dvd->i_next_vobu );
 817             return -1;
 818         }
 819
 820         /* basic check to be sure we don't have a empty title
 821          * go to next title if so */
 822         assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
 823         if( p_data[41] == 0xbf && p_data[1027] == 0xbf )
 824         {
 825             /*
 826              * Parse the contained dsi packet.
 827              */
 828
 829             DvdReadHandleDSI( p_dvd, p_data );
 830
 831             /* End of File */
 832             if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 833             {
 834                 return 1;
 835             }
 836
 837             assert( p_dvd->i_pack_len < 1024 );
 838             /* FIXME: Ugly kludge: we send the pack block to the input for it
 839              * sometimes has a zero scr and restart the sync */
 840             //p_dvd->i_cur_block ++;
 841             p_dvd->i_pack_len++;
 842         }
 843         else
 844         {
 845             b_eot = 1;
 846             p_dvd->i_pack_len = 0;
 847             return 1;
 848         }
 849     }
 850
 851     /*
 852      * Compute the number of blocks to read
 853      */
 854     i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
 855              ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
 856     p_dvd->i_pack_len -= i_blocks;
 857
 858     /* Get iovecs */
 859     *pp_data = p_data_p = input_BuffersToIO( p_input->p_method_data, p_vec,
 860                                              DVD_BLOCK_READ_ONCE );
 861
 862     if ( p_data_p == NULL )
 863     {
 864         return( -1 );
 865     }
 866
 867     /* Reads from DVD */
 868     i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 869                              i_blocks, p_vec );
 870     if( i_read != i_blocks )
 871     {
 872         intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 873                      i_read, i_blocks, p_dvd->i_cur_block );
 874         return -1;
 875     }
 876
 877     p_dvd->i_cur_block += i_read;
 878 /*
 879     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 880 */
 881     i_packet = 0;
 882
 883     /* Read headers to compute payload length */
 884     for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
 885     {
 886         data_packet_t * p_current = p_data_p;
 887         i_pos = 0;
 888
 889         while( i_pos < DVD_VIDEO_LB_LEN )
 890         {
 891             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 892
 893             /*default header */
 894             if( U32_AT( pi_cur ) != 0x1BA )
 895             {
 896                 /* That's the case for all packets, except pack header. */
 897                 i_packet_size = U16_AT( pi_cur + 4 );
 898             }
 899             else
 900             {
 901                 /* MPEG-2 Pack header. */
 902                 i_packet_size = 8;
 903             }
 904             if( i_pos != 0 )
 905             {
 906                 *pp_data = input_ShareBuffer( p_input->p_method_data,
 907                                               p_current );
 908             }
 909             else
 910             {
 911                 *pp_data = p_data_p;
 912                 p_data_p = p_data_p->p_next;
 913             }
 914
 915             (*pp_data)->p_payload_start = (*pp_data)->p_demux_start =
 916                     (*pp_data)->p_demux_start + i_pos;
 917
 918
 919             (*pp_data)->p_payload_end =
 920                     (*pp_data)->p_payload_start + i_packet_size + 6;
 921
 922 //            pp_packets[i_packet]->p_next = NULL;
 923 //            pp_packets[i_packet]->b_discard_payload = 0;
 924
 925             i_packet++;
 926             i_pos += i_packet_size + 6;
 927             pp_data = &(*pp_data)->p_next;
 928         }
 929     }
 930
 931     p_input->pf_delete_packet( p_input->p_method_data, p_data_p );
 932     *pp_data = NULL;
 933
 934     vlc_mutex_lock( &p_input->stream.stream_lock );
 935
 936     p_input->stream.p_selected_area->i_tell =
 937         LB2OFF( p_dvd->i_cur_block ) -
 938             p_input->stream.p_selected_area->i_start;
 939
 940     if( p_dvd->b_eoc )
 941     {
 942         /* We modify i_part only at end of chapter not to erase
 943          * some modification from the interface */
 944         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 945         p_dvd->b_eoc = 0;
 946     }
 947
 948     if( p_input->stream.p_selected_area->i_tell
 949             >= p_input->stream.p_selected_area->i_size || b_eot )
 950     {
 951         if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
 952                         p_input->stream.i_area_nb )
 953         {
 954             /* EOF */
 955             vlc_mutex_unlock( &p_input->stream.stream_lock );
 956             return 1;
 957         }
 958
 959         /* EOT */
 960         intf_WarnMsg( 4, "dvd info: new title" );
 961         DvdReadSetArea( p_input, p_input->stream.pp_areas[
 962                         p_input->stream.p_selected_area->i_id+1] );
 963         vlc_mutex_unlock( &p_input->stream.stream_lock );
 964         return 0;
 965     }
 966
 967     vlc_mutex_unlock( &p_input->stream.stream_lock );
 968
 969     return i_read;
 970 }
 971 #undef p_pgc
 972
 973 /*****************************************************************************
 974  * DVDRewind : reads a stream backward
 975  *****************************************************************************/
 976 static int DvdReadRewind( input_thread_t * p_input )
 977 {
 978     return( -1 );
 979 }
 980
 981 /*****************************************************************************
 982  * DvdReadSeek : Goes to a given position on the stream.
 983  *****************************************************************************
 984  * This one is used by the input and translate chronological position from
 985  * input to logical position on the device.
 986  * The lock should be taken before calling this function.
 987  *****************************************************************************/
 988 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 989 {
 990     thread_dvd_data_t *     p_dvd;
 991     int                     i_lb;
 992     int                     i_tmp;
 993     int                     i_chapter = 0;
 994     int                     i_cell = 0;
 995     int                     i_vobu = 0;
 996     int                     i_sub_cell = 0;
 997
 998     i_off += p_input->stream.p_selected_area->i_start;
 999     i_lb = OFF2LB( i_off );
1000     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1001
1002     /* find cell */
1003     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
1004     {
1005         i_cell++;
1006     }
1007
1008     /* find chapter */
1009     do
1010     {
1011         pgc_t *     p_pgc;
1012         int         pgc_id, pgn;
1013
1014         i_chapter++;
1015         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1016                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1017         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1018                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1019
1020         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1021         i_tmp = p_pgc->program_map[pgn-1];
1022
1023     } while( i_tmp <= i_cell );
1024
1025     /* find vobu */
1026     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1027             <= i_lb )
1028     {
1029         i_vobu++;
1030     }
1031
1032     /* find sub_cell */
1033     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1034             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1035     {
1036         i_sub_cell++;
1037     }
1038
1039 /*
1040     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1041             i_cell, i_sub_cell,i_chapter, i_vobu,
1042             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1043             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1044             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1045 */
1046     p_dvd->i_cur_block = i_lb;
1047     p_dvd->i_next_vobu =
1048         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1049     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1050     p_dvd->i_cur_cell = i_cell;
1051     p_dvd->i_chapter = i_chapter;
1052     DvdReadFindCell( p_dvd );
1053
1054     p_input->stream.p_selected_area->i_tell =
1055         LB2OFF ( p_dvd->i_cur_block )
1056          - p_input->stream.p_selected_area->i_start;
1057     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1058
1059     return;
1060 }
1061
1062 /*****************************************************************************
1063  * DvdReadHandleDSI
1064  *****************************************************************************/
1065 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1066 {
1067     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1068
1069     /*
1070      * Determine where we go next.  These values are the ones we mostly
1071      * care about.
1072      */
1073     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1074
1075     /*
1076      * If we're not at the end of this cell, we can determine the next
1077      * VOBU to display using the VOBU_SRI information section of the
1078      * DSI.  Using this value correctly follows the current angle,
1079      * avoiding the doubled scenes in The Matrix, and makes our life
1080      * really happy.
1081      */
1082     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1083     {
1084 #if 1
1085         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1086         {
1087             case 0x4:
1088                 /* interleaved unit with no angle */
1089                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1090                 {
1091                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1092                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1093                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1094                 }
1095                 else
1096                 {
1097                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1098                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1099                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1100                 }
1101                 break;
1102             case 0x5:
1103                 /* vobu is end of ilvu */
1104                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1105                 {
1106                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1107                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1108                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1109
1110                     break;
1111                 }
1112             case 0x6:
1113                 /* vobu is beginning of ilvu */
1114             case 0x9:
1115                 /* next scr is 0 */
1116             case 0xa:
1117                 /* entering interleaved section */
1118             case 0x8:
1119                 /* non interleaved cells in interleaved section */
1120             default:
1121                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1122                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1123                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1124                 break;
1125         }
1126 #else
1127         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1128             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1129         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1130 #endif
1131     }
1132     else
1133     {
1134         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1135         DvdReadFindCell( p_dvd );
1136
1137         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1138         p_dvd->i_next_vobu =
1139             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1140     }
1141
1142 #if 0
1143     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1144             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1145             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1146             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1147             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1148             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1149
1150     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1151             p_dvd->dsi_pack.sml_pbi.category,
1152             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1153             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1154             p_dvd->dsi_pack.sml_pbi.size );
1155
1156     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1157             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1158             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1159             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1160 #endif
1161 }
1162
1163 /*****************************************************************************
1164  * DvdReadFindCell
1165  *****************************************************************************/
1166 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1167 {
1168     int         pgc_id, pgn;
1169     int         i = 0;
1170     pgc_t *     p_pgc;
1171 #define cell p_dvd->p_cur_pgc->cell_playback
1172     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1173     {
1174 #if 0
1175         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1176         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1177 #else
1178         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1179
1180         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1181         {
1182             i++;
1183         }
1184         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1185 #endif
1186     }
1187     else
1188     {
1189         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1190     }
1191 #undef cell
1192     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1193                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1194     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1195                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1196     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1197
1198     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1199     {
1200         p_dvd->i_chapter++;
1201         p_dvd->b_eoc = 1;
1202     }
1203 }