git.sesse.net Git - vlc/blob - plugins/dvd/input_dvd.c

   1 /*****************************************************************************
   2  * input_dvd.c: DVD raw reading 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:
   7  *  -input_netlist used to read packets
   8  *  -dvd_ifo for ifo parsing and analyse
   9  *  -dvd_css for unscrambling
  10  *  -dvd_udf to find files
  11  *****************************************************************************
  12  * Copyright (C) 1998-2001 VideoLAN
  13  * $Id: input_dvd.c,v 1.65 2001/05/31 03:57:54 sam Exp $
  14  *
  15  * Author: Stéphane Borel <stef@via.ecp.fr>
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  30  *****************************************************************************/
  31
  32 /*****************************************************************************
  33  * Preamble
  34  *****************************************************************************/
  35 #include "defs.h"
  36
  37 #ifdef HAVE_CSS
  38 #   define MODULE_NAME dvd
  39 #else /* HAVE_CSS */
  40 #   define MODULE_NAME dvdnocss
  41 #endif /* HAVE_CSS */
  42
  43 #include "modules_inner.h"
  44
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47
  48 #ifdef HAVE_UNISTD_H
  49 #   include <unistd.h>
  50 #endif
  51
  52 #if !defined( WIN32 )
  53 #   include <netinet/in.h>
  54 #endif
  55
  56 #include <fcntl.h>
  57 #include <sys/types.h>
  58 #include <string.h>
  59 #include <errno.h>
  60
  61 #ifdef STRNCASECMP_IN_STRINGS_H
  62 #   include <strings.h>
  63 #endif
  64
  65 #if defined( WIN32 )
  66 #   include <io.h>
  67 #   include "input_iovec.h"
  68 #else
  69 #   include <sys/uio.h>                                      /* struct iovec */
  70 #endif
  71
  72 #include "config.h"
  73 #include "common.h"
  74 #include "threads.h"
  75 #include "mtime.h"
  76 #include "tests.h"
  77
  78 #include "intf_msg.h"
  79
  80 #include "main.h"
  81
  82 #include "stream_control.h"
  83 #include "input_ext-intf.h"
  84 #include "input_ext-dec.h"
  85
  86 #include "input.h"
  87
  88 #include "dvd_netlist.h"
  89 #include "dvd_ifo.h"
  90 #include "dvd_css.h"
  91 #include "dvd_summary.h"
  92 #include "input_dvd.h"
  93 #include "mpeg_system.h"
  94
  95 #include "debug.h"
  96
  97 #include "modules.h"
  98
  99 /*****************************************************************************
 100  * Local prototypes
 101  *****************************************************************************/
 102 /* called from outside */
 103 static int  DVDProbe    ( probedata_t *p_data );
 104 static void DVDInit     ( struct input_thread_s * );
 105 static void DVDEnd      ( struct input_thread_s * );
 106 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 107 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 108 static void DVDSeek     ( struct input_thread_s *, off_t );
 109 static int  DVDRewind   ( struct input_thread_s * );
 110
 111 /* called only inside */
 112 static int  DVDChooseAngle( thread_dvd_data_t * );
 113 static int  DVDFindCell( thread_dvd_data_t * );
 114 static int  DVDFindSector( thread_dvd_data_t * );
 115 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 116
 117 /*****************************************************************************
 118  * Functions exported as capabilities. They are declared as static so that
 119  * we don't pollute the namespace too much.
 120  *****************************************************************************/
 121 void _M( input_getfunctions )( function_list_t * p_function_list )
 122 {
 123 #define input p_function_list->functions.input
 124     p_function_list->pf_probe = DVDProbe;
 125     input.pf_init             = DVDInit;
 126     input.pf_open             = NULL; /* Set in DVDInit */
 127     input.pf_close            = NULL;
 128     input.pf_end              = DVDEnd;
 129     input.pf_read             = DVDRead;
 130     input.pf_set_area         = DVDSetArea;
 131     input.pf_demux            = input_DemuxPS;
 132     input.pf_new_packet       = DVDNewPacket;
 133     input.pf_new_pes          = DVDNewPES;
 134     input.pf_delete_packet    = DVDDeletePacket;
 135     input.pf_delete_pes       = DVDDeletePES;
 136     input.pf_rewind           = DVDRewind;
 137     input.pf_seek             = DVDSeek;
 138 #undef input
 139 }
 140
 141 /*
 142  * Data reading functions
 143  */
 144
 145 /*****************************************************************************
 146  * DVDProbe: verifies that the stream is a PS stream
 147  *****************************************************************************/
 148 static int DVDProbe( probedata_t *p_data )
 149 {
 150     input_thread_t * p_input = (input_thread_t *)p_data;
 151
 152     char * psz_name = p_input->p_source;
 153     int i_handle;
 154     int i_score = 5;
 155 #if defined( WIN32 )
 156     char buf[7];
 157 #endif
 158
 159     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 160     {
 161 #ifdef HAVE_CSS
 162         return( 999 );
 163 #else /* HAVE_CSS */
 164         return( 998 );
 165 #endif /* HAVE_CSS */
 166     }
 167
 168     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 169     {
 170         /* If the user specified "dvd:" then it's probably a DVD */
 171 #ifdef HAVE_CSS
 172         i_score = 100;
 173 #else /* HAVE_CSS */
 174         i_score = 90;
 175 #endif /* HAVE_CSS */
 176         psz_name += 4;
 177     }
 178
 179 #if !defined( WIN32 )
 180     i_handle = open( psz_name, 0 );
 181     if( i_handle == -1 )
 182     {
 183         return( 0 );
 184     }
 185     close( i_handle );
 186 #else
 187     snprintf( buf, 7, "\\\\.\\%c:", psz_name[0] );
 188     (HANDLE) i_handle = CreateFile( i_score < 90 ? psz_name : buf,
 189                         GENERIC_READ | GENERIC_WRITE,
 190                         FILE_SHARE_READ | FILE_SHARE_WRITE,
 191                         NULL, OPEN_EXISTING, 0, NULL );
 192     if( (HANDLE) i_handle == INVALID_HANDLE_VALUE )
 193     {
 194         return( 0 );
 195     }
 196     CloseHandle( (HANDLE) i_handle );
 197 #endif
 198
 199     return( i_score );
 200 }
 201
 202 /*****************************************************************************
 203  * DVDInit: initializes DVD structures
 204  *****************************************************************************/
 205 static void DVDInit( input_thread_t * p_input )
 206 {
 207     thread_dvd_data_t *  p_dvd;
 208     input_area_t *       p_area;
 209     int                  i_title;
 210     int                  i_chapter;
 211     int                  i;
 212
 213     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 214     if( p_dvd == NULL )
 215     {
 216         intf_ErrMsg( "dvd error: out of memory" );
 217         p_input->b_error = 1;
 218         return;
 219     }
 220
 221     p_input->p_plugin_data = (void *)p_dvd;
 222     p_input->p_method_data = NULL;
 223
 224     p_dvd->i_fd = p_input->i_handle;
 225
 226     /* reading several block once seems to cause lock-up
 227      * when using input_ToggleES
 228      * who wrote thez damn buggy piece of shit ??? --stef */
 229     p_dvd->i_block_once = 32;
 230     p_input->i_read_once = 128;
 231
 232     i = CSSTest( p_input->i_handle );
 233
 234     if( i < 0 )
 235     {
 236         intf_ErrMsg( "dvd error: error in css" );
 237         free( p_dvd );
 238         p_input->b_error = 1;
 239         return;
 240     }
 241
 242     p_dvd->b_encrypted = i;
 243
 244 #if !defined( WIN32 )
 245     lseek( p_input->i_handle, 0, SEEK_SET );
 246 #else
 247     SetFilePointer( (HANDLE) p_input->i_handle, 0, 0, FILE_BEGIN );
 248 #endif
 249
 250     /* Reading structures initialisation */
 251     p_input->p_method_data =
 252         DVDNetlistInit( 2048, 4096, 2048, DVD_LB_SIZE, p_dvd->i_block_once );
 253     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 254
 255     /* Ifo allocation & initialisation */
 256     if( IfoCreate( p_dvd ) < 0 )
 257     {
 258         intf_ErrMsg( "dvd error: allcation error in ifo" );
 259         p_input->b_error = 1;
 260         return;
 261     }
 262
 263     if( IfoInit( p_dvd->p_ifo ) < 0 )
 264     {
 265         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 266         free( p_dvd );
 267         p_input->b_error = 1;
 268         return;
 269     }
 270
 271     /* CSS initialisation */
 272     if( p_dvd->b_encrypted )
 273     {
 274         p_dvd->p_css = malloc( sizeof(css_t) );
 275         if( p_dvd->p_css == NULL )
 276         {
 277             intf_ErrMsg( "dvd error: couldn't create css structure" );
 278             free( p_dvd );
 279             p_input->b_error = 1;
 280             return;
 281         }
 282
 283         p_dvd->p_css->i_agid = 0;
 284
 285         if( CSSInit( p_input->i_handle, p_dvd->p_css ) < 0 )
 286         {
 287             intf_ErrMsg( "dvd error: fatal failure in css" );
 288             free( p_dvd->p_css );
 289             free( p_dvd );
 290             p_input->b_error = 1;
 291             return;
 292         }
 293
 294         intf_WarnMsg( 2, "dvd info: css initialized" );
 295     }
 296
 297     /* Set stream and area data */
 298     vlc_mutex_lock( &p_input->stream.stream_lock );
 299
 300     /* Initialize ES structures */
 301     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 302
 303     /* disc input method */
 304     p_input->stream.i_method = INPUT_METHOD_DVD;
 305
 306 #define title_inf p_dvd->p_ifo->vmg.title_inf
 307     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 308
 309 #define area p_input->stream.pp_areas
 310     /* We start from 1 here since the default area 0
 311      * is reserved for video_ts.vob */
 312     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 313     {
 314         input_AddArea( p_input );
 315
 316         /* Titles are Program Chains */
 317         area[i]->i_id = i;
 318
 319         /* Absolute start offset and size
 320          * We can only set that with vts ifo, so we do it during the
 321          * first call to DVDSetArea */
 322         area[i]->i_start = 0;
 323         area[i]->i_size = 0;
 324
 325         /* Number of chapters */
 326         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 327         area[i]->i_part = 1;
 328
 329         /* Number of angles */
 330         area[i]->i_angle_nb = 0;
 331         area[i]->i_angle = 1;
 332
 333         /* Offset to vts_i_0.ifo */
 334         area[i]->i_plugin_data = p_dvd->p_ifo->i_off +
 335                        ( title_inf.p_attr[i-1].i_start_sector * DVD_LB_SIZE );
 336     }
 337 #undef area
 338
 339     /* Get requested title - if none try the first title */
 340     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 341     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 342     {
 343         i_title = 1;
 344     }
 345
 346 #undef title_inf
 347
 348     /* Get requested chapter - if none defaults to first one */
 349     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 350     if( i_chapter <= 0 )
 351     {
 352         i_chapter = 1;
 353     }
 354
 355     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 356
 357     p_area = p_input->stream.pp_areas[i_title];
 358
 359     /* set title, chapter, audio and subpic */
 360     DVDSetArea( p_input, p_area );
 361
 362     vlc_mutex_unlock( &p_input->stream.stream_lock );
 363
 364     return;
 365 }
 366
 367 /*****************************************************************************
 368  * DVDEnd: frees unused data
 369  *****************************************************************************/
 370 static void DVDEnd( input_thread_t * p_input )
 371 {
 372     thread_dvd_data_t *     p_dvd;
 373     dvd_netlist_t *         p_netlist;
 374
 375     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 376     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 377
 378     if( p_dvd->b_encrypted )
 379     {
 380         free( p_dvd->p_css );
 381     }
 382
 383     IfoDestroy( p_dvd->p_ifo );
 384     free( p_dvd );
 385     DVDNetlistEnd( p_netlist );
 386 }
 387
 388 /*****************************************************************************
 389  * DVDSetArea: initialize input data for title x, chapter y.
 390  * It should be called for each user navigation request.
 391  *****************************************************************************
 392  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 393  * Note that you have to take the lock before entering here.
 394  *****************************************************************************/
 395 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 396 {
 397     thread_dvd_data_t *  p_dvd;
 398     es_descriptor_t *    p_es;
 399     u16                  i_id;
 400     int                  i_vts_title;
 401     int                  i_audio;
 402     int                  i_spu;
 403     int                  i;
 404     int                  j;
 405
 406     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 407
 408     /* we can't use the interface slider until initilization is complete */
 409     p_input->stream.b_seekable = 0;
 410
 411     if( p_area != p_input->stream.p_selected_area )
 412     {
 413
 414         /*
 415          *  We have to load all title information
 416          */
 417         /* Change the default area */
 418         p_input->stream.p_selected_area =
 419                     p_input->stream.pp_areas[p_area->i_id];
 420
 421         /* release the lock to to let the interface go */
 422 //        vlc_mutex_unlock( &p_input->stream.stream_lock );
 423
 424         /* title number: it is not vts nb!,
 425          * it is what appears in the interface list */
 426         p_dvd->i_title = p_area->i_id;
 427         p_dvd->p_ifo->i_title = p_dvd->i_title;
 428
 429         /* set number of chapters of current title */
 430         p_dvd->i_chapter_nb = p_area->i_part_nb;
 431
 432         /* ifo vts */
 433         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 434         {
 435             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 436             free( p_dvd );
 437             p_input->b_error = 1;
 438             return -1;
 439         }
 440
 441 #define vmg p_dvd->p_ifo->vmg
 442 #define vts p_dvd->p_ifo->vts
 443         /* title position inside the selected vts */
 444         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 445         p_dvd->i_title_id =
 446             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 447
 448         intf_WarnMsg( 3, "dvd: title %d vts_title %d pgc %d",
 449                         p_dvd->i_title,
 450                         i_vts_title,
 451                         p_dvd->i_title_id );
 452
 453         /* css title key for current vts */
 454         if( p_dvd->b_encrypted )
 455         {
 456             /* this one is vts number */
 457             p_dvd->p_css->i_title =
 458                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_set_num;
 459             p_dvd->p_css->i_title_pos =
 460                     vts.i_pos +
 461                     vts.manager_inf.i_title_vob_start_sector * DVD_LB_SIZE;
 462
 463             j = CSSGetKey( p_input->i_handle, p_dvd->p_css );
 464             if( j < 0 )
 465             {
 466                 intf_ErrMsg( "dvd error: fatal error in vts css key" );
 467                 free( p_dvd );
 468                 p_input->b_error = 1;
 469                 return -1;
 470             }
 471             else if( j > 0 )
 472             {
 473                 intf_ErrMsg( "dvd error: css decryption unavailable" );
 474                 free( p_dvd );
 475                 p_input->b_error = 1;
 476                 return -1;
 477             }
 478         }
 479
 480         /*
 481          * Angle management
 482          */
 483         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 484         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 485         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 486         {
 487             p_dvd->i_angle = 1;
 488         }
 489
 490         /*
 491          * Set selected title start and size
 492          */
 493
 494         /* title set offset */
 495         p_dvd->i_title_start = vts.i_pos + DVD_LB_SIZE *
 496                       (off_t)( vts.manager_inf.i_title_vob_start_sector );
 497
 498         /* last video cell */
 499         p_dvd->i_cell = 0;
 500         p_dvd->i_prg_cell = -1 +
 501             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 502
 503         if( DVDFindCell( p_dvd ) < 0 )
 504         {
 505             intf_ErrMsg( "dvd error: can't find title end" );
 506             p_input->b_error = 1;
 507             return -1;
 508         }
 509
 510         /* temporary hack to fix size in some dvds */
 511         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 512         {
 513             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 514         }
 515
 516         p_dvd->i_sector = 0;
 517         p_dvd->i_size = DVD_LB_SIZE *
 518           (off_t)( vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 519         intf_WarnMsg( 2, "dvd info: stream size 1: %lld @ %d", p_dvd->i_size,
 520                       vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 521
 522         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 523         {
 524             intf_ErrMsg( "dvd error: can't find first chapter" );
 525             p_input->b_error = 1;
 526             return -1;
 527         }
 528
 529         p_dvd->i_size -= (off_t)( p_dvd->i_sector + 1 ) *DVD_LB_SIZE;
 530
 531         IfoPrintTitle( p_dvd );
 532
 533 //        vlc_mutex_lock( &p_input->stream.stream_lock );
 534
 535         /* Area definition */
 536         p_input->stream.p_selected_area->i_start = p_dvd->i_start;
 537         p_input->stream.p_selected_area->i_size = p_dvd->i_size;
 538         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 539         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 540
 541         /*
 542          * Destroy obsolete ES by reinitializing program 0
 543          * and find all ES in title with ifo data
 544          */
 545         if( p_input->stream.pp_programs != NULL )
 546         {
 547             /* We don't use input_EndStream here since
 548              * we keep area structures */
 549
 550             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 551             {
 552                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 553             }
 554
 555             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 556
 557             p_input->stream.pp_selected_es = NULL;
 558             p_input->stream.i_selected_es_number = 0;
 559         }
 560
 561         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 562
 563         /* No PSM to read in DVD mode, we already have all information */
 564         p_input->stream.pp_programs[0]->b_is_ok = 1;
 565         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 566
 567         p_es = NULL;
 568
 569         /* ES 0 -> video MPEG2 */
 570         IfoPrintVideo( p_dvd );
 571
 572         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 573         p_es->i_stream_id = 0xe0;
 574         p_es->i_type = MPEG2_VIDEO_ES;
 575         p_es->i_cat = VIDEO_ES;
 576         intf_WarnMsg( 1, "dvd info: video mpeg2 stream" );
 577         if( p_main->b_video )
 578         {
 579             input_SelectES( p_input, p_es );
 580         }
 581         intf_WarnMsg( 4, "dvd info: video selected" );
 582
 583 #define audio_status \
 584     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 585         /* Audio ES, in the order they appear in .ifo */
 586         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 587         {
 588             IfoPrintAudio( p_dvd, i );
 589
 590             /* audio channel is active if first byte is 0x80 */
 591             if( audio_status.i_available )
 592             {
 593                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 594                 {
 595                 case 0x00:              /* AC3 */
 596                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 597                     p_es = input_AddES( p_input,
 598                                p_input->stream.pp_programs[0], i_id, 0 );
 599                     p_es->i_stream_id = 0xbd;
 600                     p_es->i_type = AC3_AUDIO_ES;
 601                     p_es->b_audio = 1;
 602                     p_es->i_cat = AUDIO_ES;
 603                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 604                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 605                     strcat( p_es->psz_desc, " (ac3)" );
 606
 607                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 608                                   i, p_es->psz_desc, i_id );
 609
 610                     break;
 611                 case 0x02:
 612                 case 0x03:              /* MPEG audio */
 613                     i_id = 0xc0 + audio_status.i_position;
 614                     p_es = input_AddES( p_input,
 615                                     p_input->stream.pp_programs[0], i_id, 0 );
 616                     p_es->i_stream_id = i_id;
 617                     p_es->i_type = MPEG2_AUDIO_ES;
 618                     p_es->b_audio = 1;
 619                     p_es->i_cat = AUDIO_ES;
 620                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 621                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 622                     strcat( p_es->psz_desc, " (mpeg)" );
 623
 624                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 625                                   i, p_es->psz_desc, i_id );
 626
 627                     break;
 628                 case 0x04:              /* LPCM */
 629
 630                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 631                     p_es = input_AddES( p_input,
 632                                     p_input->stream.pp_programs[0], i_id, 0 );
 633                     p_es->i_stream_id = i_id;
 634                     p_es->i_type = LPCM_AUDIO_ES;
 635                     p_es->b_audio = 1;
 636                     p_es->i_cat = AUDIO_ES;
 637                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 638                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 639                     strcat( p_es->psz_desc, " (lpcm)" );
 640
 641                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 642                                   i, p_es->psz_desc, i_id );
 643                     break;
 644                 case 0x06:              /* DTS */
 645                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 646                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 647                                  "(0x%x)", i_id );
 648                     break;
 649                 default:
 650                     i_id = 0;
 651                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 652                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 653                 }
 654             }
 655         }
 656 #undef audio_status
 657 #define spu_status \
 658     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 659
 660         /* Sub Picture ES */
 661
 662         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 663         {
 664             IfoPrintSpu( p_dvd, i );
 665
 666             if( spu_status.i_available )
 667             {
 668                 /*  there are several streams for one spu */
 669                 if(  vts.manager_inf.video_attr.i_ratio )
 670                 {
 671                     /* 16:9 */
 672                     switch( vts.manager_inf.video_attr.i_perm_displ )
 673                     {
 674                     case 1:
 675                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 676                                | 0xbd;
 677                         break;
 678                     case 2:
 679                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 680                                | 0xbd;
 681                         break;
 682                     default:
 683                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 684                                | 0xbd;
 685                         break;
 686                     }
 687                 }
 688                 else
 689                 {
 690                     /* 4:3 */
 691                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 692                            | 0xbd;
 693                 }
 694                 p_es = input_AddES( p_input,
 695                                     p_input->stream.pp_programs[0], i_id, 0 );
 696                 p_es->i_stream_id = 0xbd;
 697                 p_es->i_type = DVD_SPU_ES;
 698                 p_es->i_cat = SPU_ES;
 699                 strcpy( p_es->psz_desc, IfoLanguage( hton16(
 700                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 701                 intf_WarnMsg( 3, "dvd info: spu stream %d %s\t(0x%x)",
 702                               i, p_es->psz_desc, i_id );
 703             }
 704         }
 705 #undef spu_status
 706         if( p_main->b_audio )
 707         {
 708             /* For audio: first one if none or a not existing one specified */
 709             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 710             if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 711             {
 712                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 713                 i_audio = 1;
 714             }
 715             if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
 716             {
 717                 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 718             }
 719         }
 720
 721         if( p_main->b_video )
 722         {
 723             /* for spu, default is none */
 724             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 725             if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 726             {
 727                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 728                 i_spu = 0;
 729             }
 730             if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
 731             {
 732                 i_spu += vts.manager_inf.i_audio_nb;
 733                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 734             }
 735         }
 736     } /* i_title >= 0 */
 737     else
 738     {
 739         p_area = p_input->stream.p_selected_area;
 740     }
 741 #undef vts
 742 #undef vmg
 743
 744     /*
 745      * Chapter selection
 746      */
 747
 748
 749     if( p_area->i_part != p_dvd->i_chapter )
 750     {
 751         if( ( p_area->i_part > 0 ) &&
 752             ( p_area->i_part <= p_area->i_part_nb ))
 753         {
 754             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 755             {
 756                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 757                 p_input->b_error = 1;
 758                 return -1;
 759             }
 760
 761             p_input->stream.p_selected_area->i_tell = p_dvd->i_start -
 762                                                       p_area->i_start;
 763             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 764
 765             intf_WarnMsg( 2, "dvd info: chapter %d start at: %lld",
 766                                         p_area->i_part, p_area->i_tell );
 767         }
 768         else
 769         {
 770             p_area->i_part = 1;
 771             p_dvd->i_chapter = 1;
 772         }
 773     }
 774
 775 #define title \
 776     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 777     if( p_area->i_angle != p_dvd->i_angle )
 778     {
 779         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 780         {
 781             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 782             {
 783                 p_dvd->i_cell = 0;
 784             }
 785             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 786             p_dvd->i_angle = p_area->i_angle;
 787
 788             DVDFindSector( p_dvd );
 789             p_dvd->i_cell += p_dvd->i_angle_cell;
 790         }
 791         else
 792         {
 793             p_dvd->i_angle = p_area->i_angle;
 794         }
 795
 796         intf_WarnMsg( 2, "dvd info: angle %d selected", p_area->i_angle );
 797     }
 798
 799     /* warn interface that something has changed */
 800     p_input->stream.b_seekable = 1;
 801     p_input->stream.b_changed = 1;
 802
 803     p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_REINIT;
 804
 805     return 0;
 806 }
 807
 808
 809 /*****************************************************************************
 810  * DVDRead: reads data packets into the netlist.
 811  *****************************************************************************
 812  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 813  * EOF.
 814  *****************************************************************************/
 815 static int DVDRead( input_thread_t * p_input,
 816                     data_packet_t ** pp_packets )
 817 {
 818     thread_dvd_data_t *     p_dvd;
 819     dvd_netlist_t *         p_netlist;
 820     struct iovec *          p_vec;
 821     struct data_packet_s ** pp_data;
 822     u8 *                    pi_cur;
 823     int                     i_block_once;
 824     int                     i_packet_size;
 825     int                     i_iovec;
 826     int                     i_packet;
 827     int                     i_pos;
 828     int                     i_read_bytes;
 829     int                     i_read_blocks;
 830     off_t                   i_off;
 831     boolean_t               b_eof;
 832     boolean_t               b_eot;
 833
 834     pp_data = (struct data_packet_s **) malloc( p_input->i_read_once *
 835                                         sizeof( struct data_packet_s * ) );
 836     if( pp_data == NULL )
 837     {
 838         intf_ErrMsg( "dvd error: out of memory" );
 839         return -1;
 840     }
 841
 842     pp_data = (struct data_packet_s **) malloc( p_input->i_read_once *
 843                                         sizeof( struct data_packet_s * ) );
 844     if( pp_data == NULL )
 845     {
 846         intf_ErrMsg( "dvd error: out of memory" );
 847         return -1;
 848     }
 849
 850     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 851     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 852
 853     /* Get an iovec pointer */
 854     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 855     {
 856         intf_ErrMsg( "dvd error: can't get iovec" );
 857         free( pp_data );
 858         return -1;
 859     }
 860
 861     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 862
 863     /* Get the position of the next cell if we're at cell end */
 864     if( i_block_once <= 0 )
 865     {
 866         int     i_angle;
 867
 868         p_dvd->i_cell++;
 869         p_dvd->i_angle_cell++;
 870
 871         /* Find cell index in adress map */
 872         if( DVDFindSector( p_dvd ) < 0 )
 873         {
 874             pp_packets[0] = NULL;
 875             intf_ErrMsg( "dvd error: can't find next cell" );
 876             free( pp_data );
 877             return 1;
 878         }
 879
 880         /* Position the fd pointer on the right address */
 881         i_off = lseek( p_dvd->i_fd,
 882                        p_dvd->i_title_start +
 883                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET );
 884
 885         /* update chapter : it will be easier when we have navigation
 886          * ES support */
 887         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 888         {
 889             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 890             {
 891                 i_angle = p_dvd->i_angle - 1;
 892             }
 893             else
 894             {
 895                 i_angle = 0;
 896             }
 897             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 898                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 899             {
 900                 p_dvd->i_chapter++;
 901             }
 902         }
 903
 904         vlc_mutex_lock( &p_input->stream.stream_lock );
 905
 906         p_input->stream.p_selected_area->i_tell = i_off -
 907                                     p_input->stream.p_selected_area->i_start;
 908         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 909
 910         /* the synchro has to be reinitialized when we change cell */
 911         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_REINIT;
 912
 913         vlc_mutex_unlock( &p_input->stream.stream_lock );
 914
 915         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 916     }
 917
 918     /* the number of blocks read is the maw between the requested
 919      * value and the leaving block in the cell */
 920     if( i_block_once > p_dvd->i_block_once )
 921     {
 922         i_block_once = p_dvd->i_block_once;
 923     }
 924 //intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 925
 926     p_netlist->i_read_once = i_block_once;
 927
 928     /* Reads from DVD */
 929 #if !defined( WIN32 )
 930     i_read_bytes = readv( p_dvd->i_fd, p_vec, i_block_once );
 931 #else
 932     i_read_bytes = ReadFileV( p_dvd->i_fd, p_vec, i_block_once );
 933 #endif
 934     i_read_blocks = ( i_read_bytes + 0x7ff ) >> 11;
 935
 936     /* Update netlist indexes */
 937     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 938
 939     /* Update global position */
 940     p_dvd->i_sector += i_read_blocks;
 941
 942     i_packet = 0;
 943
 944     /* Read headers to compute payload length */
 945     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 946     {
 947         if( p_dvd->b_encrypted )
 948         {
 949             CSSDescrambleSector( p_dvd->p_css->pi_title_key,
 950                                  p_vec[i_iovec].iov_base );
 951             ((u8*)(p_vec[i_iovec].iov_base))[0x14] &= 0x8F;
 952         }
 953
 954         i_pos = 0;
 955
 956         while( i_pos < p_netlist->i_buffer_size )
 957         {
 958             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 959
 960             /*default header */
 961             if( U32_AT( pi_cur ) != 0x1BA )
 962             {
 963                 /* That's the case for all packets, except pack header. */
 964                 i_packet_size = U16_AT( pi_cur + 4 );
 965                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 966             }
 967             else
 968             {
 969                 /* Pack header. */
 970                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
 971                 {
 972                     /* MPEG-2 */
 973                     i_packet_size = 8;
 974                 }
 975                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
 976                 {
 977                     /* MPEG-1 */
 978                     i_packet_size = 6;
 979                 }
 980                 else
 981                 {
 982                     intf_ErrMsg( "Unable to determine stream type" );
 983                     free( pp_data );
 984                     return( -1 );
 985                 }
 986
 987                 pp_packets[i_packet] = pp_data[i_iovec];
 988
 989             }
 990
 991             (*pp_data[i_iovec]->pi_refcount)++;
 992
 993             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 994
 995             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 996
 997             pp_packets[i_packet]->p_payload_start =
 998                     pp_packets[i_packet]->p_buffer + i_pos;
 999
1000             pp_packets[i_packet]->p_payload_end =
1001                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
1002
1003             pp_packets[i_packet]->p_next = NULL;
1004             pp_packets[i_packet]->b_discard_payload = 0;
1005
1006             i_packet++;
1007             i_pos += i_packet_size + 6;
1008         }
1009     }
1010
1011     pp_packets[i_packet] = NULL;
1012
1013     vlc_mutex_lock( &p_input->stream.stream_lock );
1014
1015     p_input->stream.p_selected_area->i_tell += i_read_bytes;
1016     b_eot = !( p_input->stream.p_selected_area->i_tell < p_dvd->i_size );
1017     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
1018
1019     vlc_mutex_unlock( &p_input->stream.stream_lock );
1020
1021     free( pp_data );
1022
1023     free( pp_data );
1024
1025     if( b_eof )
1026     {
1027         return 1;
1028     }
1029
1030     if( b_eot )
1031     {
1032         intf_WarnMsg( 4, "dvd info: new title" );
1033         p_dvd->i_title++;
1034         vlc_mutex_lock( &p_input->stream.stream_lock );
1035         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
1036         vlc_mutex_unlock( &p_input->stream.stream_lock );
1037         return 0;
1038     }
1039
1040     if( i_read_blocks == i_block_once )
1041     {
1042         return 0;
1043     }
1044
1045     return -1;
1046 }
1047
1048 /*****************************************************************************
1049  * DVDRewind : reads a stream backward
1050  *****************************************************************************/
1051 static int DVDRewind( input_thread_t * p_input )
1052 {
1053     return( -1 );
1054 }
1055
1056 /*****************************************************************************
1057  * DVDSeek : Goes to a given position on the stream.
1058  *****************************************************************************
1059  * This one is used by the input and translate chronological position from
1060  * input to logical position on the device.
1061  * The lock should be taken before calling this function.
1062  *****************************************************************************/
1063 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1064 {
1065     thread_dvd_data_t *     p_dvd;
1066     off_t                   i_pos;
1067     int                     i_prg_cell;
1068     int                     i_cell;
1069     int                     i_chapter;
1070     int                     i_angle;
1071
1072     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1073
1074     /* we have to take care of offset of beginning of title */
1075     i_pos = i_off + p_input->stream.p_selected_area->i_start
1076                   - p_dvd->i_title_start;
1077
1078     /* update navigation data */
1079     p_dvd->i_sector = i_pos >> 11;
1080
1081     i_prg_cell = 0;
1082     i_chapter = 0;
1083
1084     /* parse vobu address map to find program cell */
1085     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1086     {
1087         i_prg_cell++;
1088     }
1089
1090     p_dvd->i_prg_cell = i_prg_cell;
1091
1092     if( DVDChooseAngle( p_dvd ) < 0 )
1093     {
1094         p_input->b_error = 1;
1095         return;
1096     }
1097
1098     p_dvd->i_cell = 0;
1099
1100     /* Find first title cell which is inside program cell */
1101     if( DVDFindCell( p_dvd ) < 0 )
1102     {
1103         /* no following cell : we're at eof */
1104         intf_ErrMsg( "dvd error: cell seeking failed" );
1105         p_input->b_error = 1;
1106         return;
1107     }
1108
1109     i_cell = p_dvd->i_cell;
1110
1111 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1112     /* parse cell address map to find title cell containing sector */
1113     while( cell.i_end_sector < p_dvd->i_sector )
1114     {
1115         i_cell++;
1116     }
1117
1118     p_dvd->i_cell = i_cell;
1119
1120     /* if we're inside a multi-angle zone, we have to choose i_sector
1121      * in the current angle ; we can't do it all the time since cells
1122      * can be very wide out of such zones */
1123     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1124     {
1125         p_dvd->i_sector = MAX(
1126                 cell.i_start_sector,
1127                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1128     }
1129
1130     p_dvd->i_end_sector = MIN(
1131             cell.i_end_sector,
1132             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1133 #undef cell
1134     /* update chapter */
1135     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1136     {
1137         i_angle = p_dvd->i_angle - 1;
1138     }
1139     else
1140     {
1141         i_angle = 0;
1142     }
1143     while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1144                 ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1145            ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1146     {
1147         i_chapter++;
1148     }
1149
1150     p_dvd->i_chapter = i_chapter;
1151     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1152
1153 #if !defined( WIN32 )
1154     p_input->stream.p_selected_area->i_tell =
1155                 lseek( p_dvd->i_fd, p_dvd->i_title_start +
1156                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET ) -
1157                 p_input->stream.p_selected_area->i_start;
1158 #else
1159     p_input->stream.p_selected_area->i_tell =
1160                 SetFilePointer( (HANDLE) p_dvd->i_fd, p_dvd->i_title_start +
1161                         (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, NULL, FILE_BEGIN) -
1162                          p_input->stream.p_selected_area->i_start;
1163
1164 #endif
1165 /*
1166     intf_WarnMsg( 3, "Program Cell: %d Cell: %d Chapter: %d",
1167                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1168 */
1169
1170     return;
1171 }
1172
1173 #define cell  p_dvd->p_ifo->vts.cell_inf
1174
1175 /*****************************************************************************
1176  * DVDFindCell: adjust the title cell index with the program cell
1177  *****************************************************************************/
1178 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1179 {
1180     int                 i_cell;
1181     int                 i_index;
1182
1183     i_cell = p_dvd->i_cell;
1184     i_index = p_dvd->i_prg_cell;
1185
1186     if( i_cell >= cell.i_cell_nb )
1187     {
1188         return -1;
1189     }
1190
1191     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1192                    cell.p_cell_map[i_cell].i_vob_id ) ||
1193       ( title.p_cell_pos[i_index].i_cell_id !=
1194                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1195            ( i_cell < cell.i_cell_nb - 1 ) )
1196     {
1197         i_cell++;
1198     }
1199
1200 /*
1201 intf_WarnMsg( 3, "FindCell: i_cell %d i_index %d found %d nb %d",
1202                     p_dvd->i_cell,
1203                     p_dvd->i_prg_cell,
1204                     i_cell,
1205                     cell.i_cell_nb );
1206 */
1207
1208     p_dvd->i_cell = i_cell;
1209
1210     return 0;
1211 }
1212
1213 #undef cell
1214
1215 /*****************************************************************************
1216  * DVDFindSector: find cell index in adress map from index in
1217  * information table program map and give corresponding sectors.
1218  *****************************************************************************/
1219 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1220 {
1221
1222     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1223     {
1224         p_dvd->i_prg_cell++;
1225
1226         if( DVDChooseAngle( p_dvd ) < 0 )
1227         {
1228             return -1;
1229         }
1230     }
1231
1232     if( DVDFindCell( p_dvd ) < 0 )
1233     {
1234         intf_ErrMsg( "dvd error: can't find sector" );
1235         return -1;
1236     }
1237
1238     /* Find start and end sectors of new cell */
1239 #if 1
1240     p_dvd->i_sector = MAX(
1241          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1242          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1243     p_dvd->i_end_sector = MIN(
1244          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1245          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1246 #else
1247     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1248     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1249 #endif
1250
1251 /*
1252     intf_WarnMsg( 3, "cell: %d sector1: 0x%x end1: 0x%x\n"
1253                    "index: %d sector2: 0x%x end2: 0x%x\n"
1254                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1255         p_dvd->i_cell,
1256         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1257         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1258         p_dvd->i_prg_cell,
1259         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1260         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1261         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1262         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1263         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1264 */
1265
1266     return 0;
1267 }
1268
1269 /*****************************************************************************
1270  * DVDChapterSelect: find the cell corresponding to requested chapter
1271  *****************************************************************************/
1272 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1273 {
1274
1275     /* Find cell index in Program chain for current chapter */
1276     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1277     p_dvd->i_cell = 0;
1278     p_dvd->i_sector = 0;
1279
1280     DVDChooseAngle( p_dvd );
1281
1282     /* Search for cell_index in cell adress_table and initialize
1283      * start sector */
1284     if( DVDFindSector( p_dvd ) < 0 )
1285     {
1286         intf_ErrMsg( "dvd error: can't select chapter" );
1287         return -1;
1288     }
1289
1290     /* start is : beginning of vts vobs + offset to vob x */
1291     p_dvd->i_start = p_dvd->i_title_start +
1292                          DVD_LB_SIZE * (off_t)( p_dvd->i_sector );
1293
1294     /* Position the fd pointer on the right address */
1295 #if !defined( WIN32 )
1296     p_dvd->i_start = lseek( p_dvd->i_fd, p_dvd->i_start, SEEK_SET );
1297 #else
1298     p_dvd->i_start = SetFilePointer( (HANDLE) p_dvd->i_fd,
1299                         p_dvd->i_start, NULL, FILE_BEGIN );
1300 #endif
1301
1302     p_dvd->i_chapter = i_chapter;
1303     return 0;
1304 }
1305
1306 /*****************************************************************************
1307  * DVDChooseAngle: select the cell corresponding to the selected angle
1308  *****************************************************************************/
1309 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1310 {
1311     /* basic handling of angles */
1312     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1313                     >> 12 ) )
1314     {
1315         /* we enter a muli-angle section */
1316         case 0x5:
1317             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1318             p_dvd->i_angle_cell = 0;
1319             break;
1320         /* we exit a multi-angle section */
1321         case 0x9:
1322         case 0xd:
1323             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1324             break;
1325     }
1326
1327     return 0;
1328 }
1329
1330 #undef title