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  *  -libdvdcss for access and unscrambling
   8  *  -dvd_ifo for ifo parsing and analyse
   9  *  -dvd_udf to find files
  10  *****************************************************************************
  11  * Copyright (C) 1998-2001 VideoLAN
  12  * $Id: input_dvd.c,v 1.117 2001/12/31 01:13:12 massiot Exp $
  13  *
  14  * Author: Stéphane Borel <stef@via.ecp.fr>
  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 #include <string.h>
  37
  38 #include <videolan/vlc.h>
  39
  40 #ifdef HAVE_UNISTD_H
  41 #   include <unistd.h>
  42 #endif
  43
  44 #include <fcntl.h>
  45 #include <sys/types.h>
  46 #include <string.h>
  47 #include <errno.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 #ifdef GOD_DAMN_DMCA
  60 #   include "dummy_dvdcss.h"
  61 #else
  62 #   include <videolan/dvdcss.h>
  63 #endif
  64
  65 #if defined( WIN32 )
  66 #   include "input_iovec.h"
  67 #endif
  68
  69 #include "stream_control.h"
  70 #include "input_ext-intf.h"
  71 #include "input_ext-dec.h"
  72 #include "input_ext-plugins.h"
  73
  74 #include "input_dvd.h"
  75 #include "dvd_ifo.h"
  76 #include "dvd_summary.h"
  77 #include "iso_lang.h"
  78
  79 #include "debug.h"
  80
  81 /* how many blocks DVDRead will read in each loop */
  82 #define DVD_BLOCK_READ_ONCE 64
  83
  84 /*****************************************************************************
  85  * Local prototypes
  86  *****************************************************************************/
  87 /* called from outside */
  88 static int  DVDProbe        ( probedata_t *p_data );
  89 static void DVDInit         ( struct input_thread_s * );
  90 static void DVDEnd          ( struct input_thread_s * );
  91 static void DVDOpen         ( struct input_thread_s * );
  92 static void DVDClose        ( struct input_thread_s * );
  93 static int  DVDSetArea      ( struct input_thread_s *, struct input_area_s * );
  94 static int  DVDSetProgram   ( struct input_thread_s *, pgrm_descriptor_t * );
  95 static int  DVDRead         ( struct input_thread_s *, data_packet_t ** );
  96 static void DVDSeek         ( struct input_thread_s *, off_t );
  97 static int  DVDRewind       ( struct input_thread_s * );
  98
  99 /* called only inside */
 100 static int  DVDChooseAngle( thread_dvd_data_t * );
 101 static int  DVDFindCell( thread_dvd_data_t * );
 102 static int  DVDFindSector( thread_dvd_data_t * );
 103 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 104
 105 /*****************************************************************************
 106  * Declare a buffer manager
 107  *****************************************************************************/
 108 #define FLAGS           BUFFERS_UNIQUE_SIZE
 109 #define NB_LIFO         1
 110 DECLARE_BUFFERS_SHARED( FLAGS, NB_LIFO );
 111 DECLARE_BUFFERS_INIT( FLAGS, NB_LIFO );
 112 DECLARE_BUFFERS_END_SHARED( FLAGS, NB_LIFO );
 113 DECLARE_BUFFERS_NEWPACKET_SHARED( FLAGS, NB_LIFO );
 114 DECLARE_BUFFERS_DELETEPACKET_SHARED( FLAGS, NB_LIFO, 1000 );
 115 DECLARE_BUFFERS_NEWPES( FLAGS, NB_LIFO );
 116 DECLARE_BUFFERS_DELETEPES( FLAGS, NB_LIFO, 1000 );
 117 DECLARE_BUFFERS_TOIO( FLAGS, DVD_LB_SIZE );
 118 DECLARE_BUFFERS_SHAREBUFFER( FLAGS );
 119
 120 /*****************************************************************************
 121  * Functions exported as capabilities. They are declared as static so that
 122  * we don't pollute the namespace too much.
 123  *****************************************************************************/
 124 void _M( input_getfunctions )( function_list_t * p_function_list )
 125 {
 126 #define input p_function_list->functions.input
 127     p_function_list->pf_probe = DVDProbe;
 128     input.pf_init             = DVDInit;
 129     input.pf_open             = DVDOpen;
 130     input.pf_close            = DVDClose;
 131     input.pf_end              = DVDEnd;
 132     input.pf_init_bit_stream  = InitBitstream;
 133     input.pf_read             = DVDRead;
 134     input.pf_set_area         = DVDSetArea;
 135     input.pf_set_program      = DVDSetProgram;
 136     input.pf_demux            = input_DemuxPS;
 137     input.pf_new_packet       = input_NewPacket;
 138     input.pf_new_pes          = input_NewPES;
 139     input.pf_delete_packet    = input_DeletePacket;
 140     input.pf_delete_pes       = input_DeletePES;
 141     input.pf_rewind           = DVDRewind;
 142     input.pf_seek             = DVDSeek;
 143 #undef input
 144 }
 145
 146 /*
 147  * Data reading functions
 148  */
 149
 150 /*****************************************************************************
 151  * DVDProbe: verifies that the stream is a PS stream
 152  *****************************************************************************/
 153 static int DVDProbe( probedata_t *p_data )
 154 {
 155     input_thread_t * p_input = (input_thread_t *)p_data;
 156
 157     char * psz_name = p_input->p_source;
 158     int i_score = 0;
 159
 160     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 161     {
 162         /* If the user specified "dvd:" then it's probably a DVD */
 163         i_score = 100;
 164         psz_name += 4;
 165     }
 166
 167     return( i_score );
 168 }
 169
 170 /*****************************************************************************
 171  * DVDInit: initializes DVD structures
 172  *****************************************************************************/
 173 static void DVDInit( input_thread_t * p_input )
 174 {
 175     thread_dvd_data_t *  p_dvd;
 176     input_area_t *       p_area;
 177     int                  i_title;
 178     int                  i_chapter;
 179     int                  i;
 180
 181     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 182     if( p_dvd == NULL )
 183     {
 184         intf_ErrMsg( "dvd error: out of memory" );
 185         p_input->b_error = 1;
 186         return;
 187     }
 188
 189     p_input->p_plugin_data = (void *)p_dvd;
 190
 191     if( (p_input->p_method_data = input_BuffersInit()) == NULL )
 192     {
 193         p_input->b_error = 1;
 194         return;
 195     }
 196
 197     p_dvd->dvdhandle = (dvdcss_handle) p_input->p_handle;
 198
 199     if( dvdcss_seek( p_dvd->dvdhandle, 0, DVDCSS_NOFLAGS ) < 0 )
 200     {
 201         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 202         input_BuffersEnd( p_input->p_method_data );
 203         p_input->b_error = 1;
 204         return;
 205     }
 206
 207     /* We read DVD_BLOCK_READ_ONCE in each loop */
 208     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 209
 210     /* Ifo allocation & initialisation */
 211     if( IfoCreate( p_dvd ) < 0 )
 212     {
 213         intf_ErrMsg( "dvd error: allcation error in ifo" );
 214         free( p_dvd );
 215         input_BuffersEnd( p_input->p_method_data );
 216         p_input->b_error = 1;
 217         return;
 218     }
 219
 220     if( IfoInit( p_dvd->p_ifo ) < 0 )
 221     {
 222         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 223         IfoDestroy( p_dvd->p_ifo );
 224         free( p_dvd );
 225         input_BuffersEnd( p_input->p_method_data );
 226         p_input->b_error = 1;
 227         return;
 228     }
 229
 230     /* Set stream and area data */
 231     vlc_mutex_lock( &p_input->stream.stream_lock );
 232
 233     /* Initialize ES structures */
 234     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 235
 236 #define title_inf p_dvd->p_ifo->vmg.title_inf
 237     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 238
 239 #define area p_input->stream.pp_areas
 240     /* We start from 1 here since the default area 0
 241      * is reserved for video_ts.vob */
 242     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 243     {
 244         input_AddArea( p_input );
 245
 246         /* Titles are Program Chains */
 247         area[i]->i_id = i;
 248
 249         /* Absolute start offset and size
 250          * We can only set that with vts ifo, so we do it during the
 251          * first call to DVDSetArea */
 252         area[i]->i_start = 0;
 253         area[i]->i_size = 0;
 254
 255         /* Number of chapters */
 256         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 257         area[i]->i_part = 1;
 258
 259         /* Number of angles */
 260         area[i]->i_angle_nb = 0;
 261         area[i]->i_angle = 1;
 262
 263         /* Offset to vts_i_0.ifo */
 264         area[i]->i_plugin_data = p_dvd->p_ifo->i_start +
 265                        title_inf.p_attr[i-1].i_start_sector;
 266     }
 267 #undef area
 268
 269     /* Get requested title - if none try the first title */
 270     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 271     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 272     {
 273         i_title = 1;
 274     }
 275
 276 #undef title_inf
 277
 278     /* Get requested chapter - if none defaults to first one */
 279     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 280     if( i_chapter <= 0 )
 281     {
 282         i_chapter = 1;
 283     }
 284
 285     p_area = p_input->stream.pp_areas[i_title];
 286     p_area->i_part = i_chapter;
 287
 288     /* set title, chapter, audio and subpic */
 289     DVDSetArea( p_input, p_area );
 290
 291     vlc_mutex_unlock( &p_input->stream.stream_lock );
 292
 293     return;
 294 }
 295
 296 /*****************************************************************************
 297  * DVDOpen: open dvd
 298  *****************************************************************************/
 299 static void DVDOpen( struct input_thread_s *p_input )
 300 {
 301     dvdcss_handle dvdhandle;
 302     char * psz_parser;
 303     char * psz_device;
 304
 305     vlc_mutex_lock( &p_input->stream.stream_lock );
 306
 307     /* If we are here we can control the pace... */
 308     p_input->stream.b_pace_control = 1;
 309
 310     p_input->stream.b_seekable = 1;
 311     p_input->stream.p_selected_area->i_size = 0;
 312
 313     p_input->stream.p_selected_area->i_tell = 0;
 314
 315     vlc_mutex_unlock( &p_input->stream.stream_lock );
 316
 317     /* Parse input string : dvd:device[@rawdevice] */
 318     if( strlen( p_input->p_source ) > 4
 319          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 320     {
 321         psz_parser = psz_device = p_input->p_source + 4;
 322     }
 323     else
 324     {
 325         psz_parser = psz_device = p_input->p_source;
 326     }
 327
 328     while( *psz_parser && *psz_parser != '@' )
 329     {
 330         psz_parser++;
 331     }
 332
 333     if( *psz_parser == '@' )
 334     {
 335         /* Found raw device */
 336         *psz_parser = '\0';
 337         psz_parser++;
 338
 339         main_PutPszVariable( "DVDCSS_RAW_DEVICE", psz_parser );
 340     }
 341
 342     intf_WarnMsg( 2, "input: dvd=%s raw=%s", psz_device, psz_parser );
 343
 344     dvdhandle = dvdcss_open( psz_device );
 345
 346     if( dvdhandle == NULL )
 347     {
 348         intf_ErrMsg( "dvd error: dvdcss can't open device" );
 349         p_input->b_error = 1;
 350         return;
 351     }
 352
 353     p_input->p_handle = (void *) dvdhandle;
 354 }
 355
 356 /*****************************************************************************
 357  * DVDClose: close dvd
 358  *****************************************************************************/
 359 static void DVDClose( struct input_thread_s *p_input )
 360 {
 361     /* Clean up libdvdcss */
 362     dvdcss_close( (dvdcss_handle) p_input->p_handle );
 363 }
 364
 365 /*****************************************************************************
 366  * DVDEnd: frees unused data
 367  *****************************************************************************/
 368 static void DVDEnd( input_thread_t * p_input )
 369 {
 370     thread_dvd_data_t *     p_dvd;
 371
 372     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 373
 374     IfoDestroy( p_dvd->p_ifo );
 375
 376     free( p_dvd );
 377
 378     input_BuffersEnd( p_input->p_method_data );
 379 }
 380
 381 /*****************************************************************************
 382  * DVDSetProgram: Does nothing, a DVD is mono-program
 383  *****************************************************************************/
 384 static int DVDSetProgram( input_thread_t * p_input,
 385             pgrm_descriptor_t * p_program )
 386 {
 387     return 0;
 388 }
 389
 390 /*****************************************************************************
 391  * DVDSetArea: initialize input data for title x, chapter y.
 392  * It should be called for each user navigation request.
 393  *****************************************************************************
 394  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 395  * Note that you have to take the lock before entering here.
 396  *****************************************************************************/
 397 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 398 {
 399     thread_dvd_data_t *  p_dvd;
 400     es_descriptor_t *    p_es;
 401     u16                  i_id;
 402     int                  i_vts_title;
 403     int                  i_audio_nb = 0;
 404     int                  i_spu_nb = 0;
 405     int                  i_audio;
 406     int                  i_spu;
 407     int                  i;
 408
 409     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 410
 411     /* we can't use the interface slider until initilization is complete */
 412     p_input->stream.b_seekable = 0;
 413
 414     if( p_area != p_input->stream.p_selected_area )
 415     {
 416         /* Reset the Chapter position of the old title */
 417         p_input->stream.p_selected_area->i_part = 0;
 418
 419         /*
 420          *  We have to load all title information
 421          */
 422         /* Change the default area */
 423         p_input->stream.p_selected_area =
 424                     p_input->stream.pp_areas[p_area->i_id];
 425
 426         /* title number: it is not vts nb!,
 427          * it is what appears in the interface list */
 428         p_dvd->i_title = p_area->i_id;
 429         p_dvd->p_ifo->i_title = p_dvd->i_title;
 430
 431         /* set number of chapters of current title */
 432         p_dvd->i_chapter_nb = p_area->i_part_nb;
 433
 434         /* ifo vts */
 435         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 436         {
 437             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 438             free( p_dvd );
 439             p_input->b_error = 1;
 440             return -1;
 441         }
 442
 443 #define vmg p_dvd->p_ifo->vmg
 444 #define vts p_dvd->p_ifo->vts
 445         /* title position inside the selected vts */
 446         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 447         p_dvd->i_title_id =
 448             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 449
 450         intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
 451                          p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
 452
 453
 454         /*
 455          * Angle management
 456          */
 457         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 458         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 459         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 460         {
 461             p_dvd->i_angle = 1;
 462         }
 463
 464         /*
 465          * Set selected title start and size
 466          */
 467
 468         /* title set offset XXX: convert to block values */
 469         p_dvd->i_title_start =
 470             vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
 471
 472         /* last video cell */
 473         p_dvd->i_cell = 0;
 474         p_dvd->i_prg_cell = -1 +
 475             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 476
 477         if( DVDFindCell( p_dvd ) < 0 )
 478         {
 479             intf_ErrMsg( "dvd error: can't find title end" );
 480             p_input->b_error = 1;
 481             return -1;
 482         }
 483
 484         /* temporary hack to fix size in some dvds */
 485         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 486         {
 487             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 488         }
 489
 490         p_dvd->i_sector = 0;
 491         p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
 492
 493         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 494         {
 495             intf_ErrMsg( "dvd error: can't find first chapter" );
 496             p_input->b_error = 1;
 497             return -1;
 498         }
 499
 500         /* Force libdvdcss to check its title key.
 501          * It is only useful for title cracking method. Methods using the
 502          * decrypted disc key are fast enough to check the key at each seek */
 503
 504         if( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start,
 505                             DVDCSS_SEEK_KEY ) < 0 )
 506         {
 507             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 508             return -1;
 509         }
 510
 511         p_dvd->i_size -= p_dvd->i_sector + 1;
 512
 513         IfoPrintTitle( p_dvd );
 514
 515         /* Area definition */
 516         p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
 517         p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
 518         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 519         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 520
 521 #if 0
 522         /* start at the beginning of the title */
 523         /* FIXME: create a conf option to select whether to restart
 524          * title or not */
 525         p_input->stream.p_selected_area->i_tell = 0;
 526         p_input->stream.p_selected_area->i_part = 1;
 527 #endif
 528
 529         /*
 530          * Destroy obsolete ES by reinitializing program 0
 531          * and find all ES in title with ifo data
 532          */
 533         if( p_input->stream.pp_programs != NULL )
 534         {
 535             /* We don't use input_EndStream here since
 536              * we keep area structures */
 537
 538             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 539             {
 540                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 541             }
 542
 543             free( p_input->stream.pp_selected_es );
 544             input_DelProgram( p_input, p_input->stream.p_selected_program );
 545
 546             p_input->stream.pp_selected_es = NULL;
 547             p_input->stream.i_selected_es_number = 0;
 548         }
 549
 550         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 551         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 552
 553         /* No PSM to read in DVD mode, we already have all information */
 554         p_input->stream.p_selected_program->b_is_ok = 1;
 555
 556         p_es = NULL;
 557
 558         /* ES 0 -> video MPEG2 */
 559         IfoPrintVideo( p_dvd );
 560
 561         p_es = input_AddES( p_input, p_input->stream.p_selected_program,
 562                 0xe0, 0 );
 563         p_es->i_stream_id = 0xe0;
 564         p_es->i_type = MPEG2_VIDEO_ES;
 565         p_es->i_cat = VIDEO_ES;
 566         if( p_main->b_video )
 567         {
 568             input_SelectES( p_input, p_es );
 569         }
 570
 571 #define audio_status \
 572     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 573         /* Audio ES, in the order they appear in .ifo */
 574         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 575         {
 576             IfoPrintAudio( p_dvd, i );
 577
 578             /* audio channel is active if first byte is 0x80 */
 579             if( audio_status.i_available )
 580             {
 581                 i_audio_nb++;
 582
 583                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 584                 {
 585                 case 0x00:              /* AC3 */
 586                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 587                     p_es = input_AddES( p_input,
 588                                p_input->stream.p_selected_program, i_id, 0 );
 589                     p_es->i_stream_id = 0xbd;
 590                     p_es->i_type = AC3_AUDIO_ES;
 591                     p_es->b_audio = 1;
 592                     p_es->i_cat = AUDIO_ES;
 593                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 594                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 595                     strcat( p_es->psz_desc, " (ac3)" );
 596
 597                     break;
 598                 case 0x02:
 599                 case 0x03:              /* MPEG audio */
 600                     i_id = 0xc0 + audio_status.i_position;
 601                     p_es = input_AddES( p_input,
 602                                     p_input->stream.p_selected_program, i_id
 603                                     , 0 );
 604                     p_es->i_stream_id = i_id;
 605                     p_es->i_type = MPEG2_AUDIO_ES;
 606                     p_es->b_audio = 1;
 607                     p_es->i_cat = AUDIO_ES;
 608                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 609                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 610                     strcat( p_es->psz_desc, " (mpeg)" );
 611
 612                     break;
 613                 case 0x04:              /* LPCM */
 614
 615                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 616                     p_es = input_AddES( p_input,
 617                                     p_input->stream.p_selected_program,
 618                                     i_id, 0 );
 619                     p_es->i_stream_id = 0xbd;
 620                     p_es->i_type = LPCM_AUDIO_ES;
 621                     p_es->b_audio = 1;
 622                     p_es->i_cat = AUDIO_ES;
 623                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 624                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 625                     strcat( p_es->psz_desc, " (lpcm)" );
 626
 627                     break;
 628                 case 0x06:              /* DTS */
 629                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 630                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 631                                  "(0x%x)", i_id );
 632                     break;
 633                 default:
 634                     i_id = 0;
 635                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 636                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 637                 }
 638             }
 639         }
 640 #undef audio_status
 641 #define spu_status \
 642     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 643
 644         /* Sub Picture ES */
 645
 646         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 647         {
 648             IfoPrintSpu( p_dvd, i );
 649
 650             if( spu_status.i_available )
 651             {
 652                 i_spu_nb++;
 653
 654                 /*  there are several streams for one spu */
 655                 if(  vts.manager_inf.video_attr.i_ratio )
 656                 {
 657                     /* 16:9 */
 658                     switch( vts.manager_inf.video_attr.i_perm_displ )
 659                     {
 660                     case 1:
 661                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 662                                | 0xbd;
 663                         break;
 664                     case 2:
 665                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 666                                | 0xbd;
 667                         break;
 668                     default:
 669                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 670                                | 0xbd;
 671                         break;
 672                     }
 673                 }
 674                 else
 675                 {
 676                     /* 4:3 */
 677                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 678                            | 0xbd;
 679                 }
 680                 p_es = input_AddES( p_input,
 681                                     p_input->stream.p_selected_program,
 682                                     i_id, 0 );
 683                 p_es->i_stream_id = 0xbd;
 684                 p_es->i_type = DVD_SPU_ES;
 685                 p_es->i_cat = SPU_ES;
 686                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 687                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 688             }
 689         }
 690 #undef spu_status
 691         if( p_main->b_audio )
 692         {
 693             /* For audio: first one if none or a not existing one specified */
 694             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 695             if( i_audio < 0 || i_audio > i_audio_nb )
 696             {
 697                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 698                 i_audio = 1;
 699             }
 700             if( i_audio > 0 && i_audio_nb > 0 )
 701             {
 702                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 703                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 704                       REQUESTED_AC3 ) )
 705                 {
 706                     int     i_ac3 = i_audio;
 707                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 708                              AC3_AUDIO_ES ) && ( i_ac3 <=
 709                              vts.manager_inf.i_audio_nb ) )
 710                     {
 711                         i_ac3++;
 712                     }
 713                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 714                     {
 715                         input_SelectES( p_input,
 716                                         p_input->stream.pp_es[i_ac3] );
 717                     }
 718                 }
 719                 else
 720                 {
 721                     input_SelectES( p_input,
 722                                     p_input->stream.pp_es[i_audio] );
 723                 }
 724             }
 725         }
 726
 727         if( p_main->b_video )
 728         {
 729             /* for spu, default is none */
 730             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 731             if( i_spu < 0 || i_spu > i_spu_nb )
 732             {
 733                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 734                 i_spu = 0;
 735             }
 736             if( i_spu > 0 && i_spu_nb > 0 )
 737             {
 738                 i_spu += vts.manager_inf.i_audio_nb;
 739                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 740             }
 741         }
 742     } /* i_title >= 0 */
 743     else
 744     {
 745         p_area = p_input->stream.p_selected_area;
 746     }
 747 #undef vts
 748 #undef vmg
 749
 750     /*
 751      * Chapter selection
 752      */
 753
 754     if( p_area->i_part != p_dvd->i_chapter )
 755     {
 756         if( ( p_area->i_part > 0 ) &&
 757             ( p_area->i_part <= p_area->i_part_nb ))
 758         {
 759             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 760             {
 761                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 762                 p_input->b_error = 1;
 763                 return -1;
 764             }
 765
 766             p_input->stream.p_selected_area->i_tell =
 767                                    LB2OFF( p_dvd->i_start ) - p_area->i_start;
 768             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 769
 770             intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
 771                                         p_area->i_part, p_area->i_tell );
 772         }
 773         else
 774         {
 775             p_area->i_part = 1;
 776             p_dvd->i_chapter = 1;
 777         }
 778     }
 779
 780 #define title \
 781     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 782     if( p_area->i_angle != p_dvd->i_angle )
 783     {
 784         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 785         {
 786             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 787             {
 788                 p_dvd->i_cell = 0;
 789             }
 790             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 791             p_dvd->i_angle = p_area->i_angle;
 792
 793             DVDFindSector( p_dvd );
 794             p_dvd->i_cell += p_dvd->i_angle_cell;
 795         }
 796         else
 797         {
 798             p_dvd->i_angle = p_area->i_angle;
 799         }
 800
 801         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 802     }
 803
 804     /* warn interface that something has changed */
 805     p_input->stream.b_seekable = 1;
 806     p_input->stream.b_changed = 1;
 807
 808     return 0;
 809 }
 810
 811
 812 /*****************************************************************************
 813  * DVDRead: reads data packets.
 814  *****************************************************************************
 815  * Returns -1 in case of error, 0 in case of EOF, otherwise the number of
 816  * packets.
 817  *****************************************************************************/
 818 static int DVDRead( input_thread_t * p_input,
 819                     data_packet_t ** pp_data )
 820 {
 821     thread_dvd_data_t *     p_dvd;
 822     struct iovec            p_vec[DVD_BLOCK_READ_ONCE];
 823     u8 *                    pi_cur;
 824     int                     i_block_once;
 825     int                     i_packet_size;
 826     int                     i_iovec;
 827     int                     i_packet;
 828     int                     i_pos;
 829     int                     i_read_blocks;
 830     int                     i_sector;
 831     boolean_t               b_eoc;
 832     data_packet_t *         p_data;
 833
 834     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 835
 836     *pp_data = NULL;
 837
 838     b_eoc = 0;
 839     i_sector = p_dvd->i_title_start + p_dvd->i_sector;
 840     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 841
 842
 843     /* Get the position of the next cell if we're at cell end */
 844     if( i_block_once <= 0 )
 845     {
 846         int     i_angle;
 847
 848         p_dvd->i_cell++;
 849         p_dvd->i_angle_cell++;
 850
 851         /* Find cell index in adress map */
 852         if( DVDFindSector( p_dvd ) < 0 )
 853         {
 854             intf_ErrMsg( "dvd error: can't find next cell" );
 855             return 1;
 856         }
 857
 858         /* Position the fd pointer on the right address */
 859         if( ( i_sector = dvdcss_seek( p_dvd->dvdhandle,
 860                                       p_dvd->i_title_start + p_dvd->i_sector,
 861                                       DVDCSS_SEEK_MPEG ) ) < 0 )
 862         {
 863             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 864             return -1;
 865         }
 866
 867         /* update chapter : it will be easier when we have navigation
 868          * ES support */
 869         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 870         {
 871             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 872             {
 873                 i_angle = p_dvd->i_angle - 1;
 874             }
 875             else
 876             {
 877                 i_angle = 0;
 878             }
 879             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 880                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 881             {
 882                 p_dvd->i_chapter++;
 883                 b_eoc = 1;
 884             }
 885         }
 886
 887         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 888     }
 889
 890     /* The number of blocks read is the max between the requested
 891      * value and the leaving block in the cell */
 892     if( i_block_once > p_dvd->i_block_once )
 893     {
 894         i_block_once = p_dvd->i_block_once;
 895     }
 896 /*
 897 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 898 */
 899
 900     /* Get iovecs */
 901     *pp_data = p_data = input_BuffersToIO( p_input->p_method_data, p_vec,
 902                                            DVD_BLOCK_READ_ONCE );
 903
 904     if ( p_data == NULL )
 905     {
 906         return( -1 );
 907     }
 908
 909     /* Reads from DVD */
 910     i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
 911                                   i_block_once, DVDCSS_READ_DECRYPT );
 912
 913     /* Update global position */
 914     p_dvd->i_sector += i_read_blocks;
 915
 916     i_packet = 0;
 917
 918     /* Read headers to compute payload length */
 919     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 920     {
 921         data_packet_t * p_current = p_data;
 922         i_pos = 0;
 923
 924         while( i_pos < DVD_LB_SIZE )
 925         {
 926             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 927
 928             /* Default header */
 929             if( U32_AT( pi_cur ) != 0x1BA )
 930             {
 931                 /* That's the case for all packets, except pack header. */
 932                 i_packet_size = U16_AT( pi_cur + 4 );
 933             }
 934             else
 935             {
 936                 /* MPEG-2 Pack header. */
 937                 i_packet_size = 8;
 938             }
 939
 940             if( i_pos != 0 )
 941             {
 942                 *pp_data = input_ShareBuffer( p_input->p_method_data,
 943                                               p_current );
 944             }
 945             else
 946             {
 947                 *pp_data = p_data;
 948                 p_data = p_data->p_next;
 949             }
 950
 951             (*pp_data)->p_payload_start = (*pp_data)->p_demux_start =
 952                     (*pp_data)->p_demux_start + i_pos;
 953
 954             (*pp_data)->p_payload_end =
 955                     (*pp_data)->p_payload_start + i_packet_size + 6;
 956
 957             i_packet++;
 958             i_pos += i_packet_size + 6;
 959             pp_data = &(*pp_data)->p_next;
 960         }
 961     }
 962
 963     p_input->pf_delete_packet( p_input->p_method_data, p_data );
 964     *pp_data = NULL;
 965
 966     vlc_mutex_lock( &p_input->stream.stream_lock );
 967
 968     p_input->stream.p_selected_area->i_tell =
 969         LB2OFF( i_sector + i_read_blocks ) -
 970         p_input->stream.p_selected_area->i_start;
 971     if( b_eoc )
 972     {
 973         /* We modify i_part only at end of chapter not to erase
 974          * some modification from the interface */
 975         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 976     }
 977
 978     if( p_input->stream.p_selected_area->i_tell
 979             >= p_input->stream.p_selected_area->i_size )
 980     {
 981         if( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb )
 982         {
 983             /* EOF */
 984             vlc_mutex_unlock( &p_input->stream.stream_lock );
 985             return 0;
 986         }
 987
 988         /* EOT */
 989         intf_WarnMsg( 4, "dvd info: new title" );
 990         p_dvd->i_title++;
 991         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 992         vlc_mutex_unlock( &p_input->stream.stream_lock );
 993         return( i_packet );
 994     }
 995
 996     vlc_mutex_unlock( &p_input->stream.stream_lock );
 997
 998     if( i_read_blocks != i_block_once )
 999     {
1000         return -1;
1001     }
1002
1003     return( i_packet );
1004 }
1005
1006 /*****************************************************************************
1007  * DVDRewind : reads a stream backward
1008  *****************************************************************************/
1009 static int DVDRewind( input_thread_t * p_input )
1010 {
1011     return( -1 );
1012 }
1013
1014 /*****************************************************************************
1015  * DVDSeek : Goes to a given position on the stream.
1016  *****************************************************************************
1017  * This one is used by the input and translate chronological position from
1018  * input to logical position on the device.
1019  * The lock should be taken before calling this function.
1020  *****************************************************************************/
1021 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1022 {
1023     thread_dvd_data_t *     p_dvd;
1024     int                     i_block;
1025     int                     i_prg_cell;
1026     int                     i_cell;
1027     int                     i_chapter;
1028     int                     i_angle;
1029
1030     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1031
1032     /* we have to take care of offset of beginning of title */
1033     p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
1034                        - p_dvd->i_title_start;
1035
1036     i_prg_cell = 0;
1037     i_chapter = 0;
1038
1039     /* parse vobu address map to find program cell */
1040     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1041     {
1042         i_prg_cell++;
1043     }
1044
1045     p_dvd->i_prg_cell = i_prg_cell;
1046
1047     if( DVDChooseAngle( p_dvd ) < 0 )
1048     {
1049         p_input->b_error = 1;
1050         return;
1051     }
1052
1053     p_dvd->i_cell = 0;
1054
1055     /* Find first title cell which is inside program cell */
1056     if( DVDFindCell( p_dvd ) < 0 )
1057     {
1058         /* no following cell : we're at eof */
1059         intf_ErrMsg( "dvd error: cell seeking failed" );
1060         p_input->b_error = 1;
1061         return;
1062     }
1063
1064     i_cell = p_dvd->i_cell;
1065
1066 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1067     /* parse cell address map to find title cell containing sector */
1068     while( cell.i_end_sector < p_dvd->i_sector )
1069     {
1070         i_cell++;
1071     }
1072
1073     p_dvd->i_cell = i_cell;
1074
1075     /* if we're inside a multi-angle zone, we have to choose i_sector
1076      * in the current angle ; we can't do it all the time since cells
1077      * can be very wide out of such zones */
1078     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1079     {
1080         p_dvd->i_sector = MAX(
1081                 cell.i_start_sector,
1082                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1083     }
1084
1085     p_dvd->i_end_sector = MIN(
1086             cell.i_end_sector,
1087             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1088 #undef cell
1089     /* update chapter */
1090     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1091     {
1092         i_angle = p_dvd->i_angle - 1;
1093     }
1094     else
1095     {
1096         i_angle = 0;
1097     }
1098     if( p_dvd->i_chapter_nb > 1 )
1099     {
1100         while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1101                     ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1102                ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1103         {
1104             i_chapter++;
1105         }
1106     }
1107     else
1108     {
1109         i_chapter = 1;
1110     }
1111
1112     p_dvd->i_chapter = i_chapter;
1113     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1114
1115     if( ( i_block = dvdcss_seek( p_dvd->dvdhandle,
1116                                  p_dvd->i_title_start + p_dvd->i_sector,
1117                                  DVDCSS_SEEK_MPEG ) ) < 0 )
1118     {
1119         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1120         p_input->b_error = 1;
1121         return;
1122     }
1123
1124     p_input->stream.p_selected_area->i_tell =
1125         LB2OFF ( i_block ) - p_input->stream.p_selected_area->i_start;
1126
1127     intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1128                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1129
1130
1131     return;
1132 }
1133
1134 #define cell  p_dvd->p_ifo->vts.cell_inf
1135
1136 /*****************************************************************************
1137  * DVDFindCell: adjust the title cell index with the program cell
1138  *****************************************************************************/
1139 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1140 {
1141     int                 i_cell;
1142     int                 i_index;
1143
1144     i_cell = p_dvd->i_cell;
1145     i_index = p_dvd->i_prg_cell;
1146
1147     if( i_cell >= cell.i_cell_nb )
1148     {
1149         return -1;
1150     }
1151
1152     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1153                    cell.p_cell_map[i_cell].i_vob_id ) ||
1154       ( title.p_cell_pos[i_index].i_cell_id !=
1155                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1156            ( i_cell < cell.i_cell_nb - 1 ) )
1157     {
1158         i_cell++;
1159     }
1160
1161 /*
1162 intf_WarnMsg( 12, "FindCell: i_cell %d i_index %d found %d nb %d",
1163                     p_dvd->i_cell,
1164                     p_dvd->i_prg_cell,
1165                     i_cell,
1166                     cell.i_cell_nb );
1167 */
1168
1169     p_dvd->i_cell = i_cell;
1170
1171     return 0;
1172 }
1173
1174 #undef cell
1175
1176 /*****************************************************************************
1177  * DVDFindSector: find cell index in adress map from index in
1178  * information table program map and give corresponding sectors.
1179  *****************************************************************************/
1180 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1181 {
1182
1183     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1184     {
1185         p_dvd->i_prg_cell++;
1186
1187         if( DVDChooseAngle( p_dvd ) < 0 )
1188         {
1189             return -1;
1190         }
1191     }
1192
1193     if( DVDFindCell( p_dvd ) < 0 )
1194     {
1195         intf_ErrMsg( "dvd error: can't find sector" );
1196         return -1;
1197     }
1198
1199     /* Find start and end sectors of new cell */
1200 #if 1
1201     p_dvd->i_sector = MAX(
1202          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1203          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1204     p_dvd->i_end_sector = MIN(
1205          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1206          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1207 #else
1208     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1209     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1210 #endif
1211
1212 /*
1213     intf_WarnMsg( 12, "cell: %d sector1: 0x%x end1: 0x%x\n"
1214                    "index: %d sector2: 0x%x end2: 0x%x\n"
1215                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1216         p_dvd->i_cell,
1217         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1218         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1219         p_dvd->i_prg_cell,
1220         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1221         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1222         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1223         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1224         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1225 */
1226
1227     return 0;
1228 }
1229
1230 /*****************************************************************************
1231  * DVDChapterSelect: find the cell corresponding to requested chapter
1232  *****************************************************************************/
1233 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1234 {
1235
1236     /* Find cell index in Program chain for current chapter */
1237     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1238     p_dvd->i_cell = 0;
1239     p_dvd->i_sector = 0;
1240
1241     DVDChooseAngle( p_dvd );
1242
1243     /* Search for cell_index in cell adress_table and initialize
1244      * start sector */
1245     if( DVDFindSector( p_dvd ) < 0 )
1246     {
1247         intf_ErrMsg( "dvd error: can't select chapter" );
1248         return -1;
1249     }
1250
1251     /* start is : beginning of vts vobs + offset to vob x */
1252     p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1253
1254     /* Position the fd pointer on the right address */
1255     if( ( p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle,
1256                                         p_dvd->i_start,
1257                                         DVDCSS_SEEK_MPEG ) ) < 0 )
1258     {
1259         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1260         return -1;
1261     }
1262
1263     p_dvd->i_chapter = i_chapter;
1264     return 0;
1265 }
1266
1267 /*****************************************************************************
1268  * DVDChooseAngle: select the cell corresponding to the selected angle
1269  *****************************************************************************/
1270 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1271 {
1272     /* basic handling of angles */
1273     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1274                     >> 12 ) )
1275     {
1276         /* we enter a muli-angle section */
1277         case 0x5:
1278             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1279             p_dvd->i_angle_cell = 0;
1280             break;
1281         /* we exit a multi-angle section */
1282         case 0x9:
1283         case 0xd:
1284             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1285             break;
1286     }
1287
1288     return 0;
1289 }
1290
1291 #undef title