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  *  -libdvdcss for access and unscrambling
   9  *  -dvd_ifo for ifo parsing and analyse
  10  *  -dvd_udf to find files
  11  *****************************************************************************
  12  * Copyright (C) 1998-2001 VideoLAN
  13  * $Id: input_dvd.c,v 1.91 2001/10/16 16:51:28 stef 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 #define MODULE_NAME dvd
  33 #include "modules_inner.h"
  34
  35 /*****************************************************************************
  36  * Preamble
  37  *****************************************************************************/
  38 #include "defs.h"
  39
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42
  43 #ifdef HAVE_UNISTD_H
  44 #   include <unistd.h>
  45 #endif
  46
  47 #include <fcntl.h>
  48 #include <sys/types.h>
  49 #include <string.h>
  50 #include <errno.h>
  51
  52 #ifdef STRNCASECMP_IN_STRINGS_H
  53 #   include <strings.h>
  54 #endif
  55
  56 #if defined( WIN32 )
  57 #   include <io.h>                                                 /* read() */
  58 #else
  59 #   include <sys/uio.h>                                      /* struct iovec */
  60 #endif
  61
  62 #ifdef GOD_DAMN_DMCA
  63 #   include "dummy_dvdcss.h"
  64 #else
  65 #   include <videolan/dvdcss.h>
  66 #endif
  67
  68 #include "config.h"
  69 #include "common.h"
  70 #include "threads.h"
  71 #include "mtime.h"
  72 #include "tests.h"
  73
  74 #if defined( WIN32 )
  75 #   include "input_iovec.h"
  76 #endif
  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 #include "input_ext-plugins.h"
  86
  87 #include "input_dvd.h"
  88 #include "dvd_netlist.h"
  89 #include "dvd_ifo.h"
  90 #include "dvd_summary.h"
  91
  92 #include "debug.h"
  93
  94 #include "modules.h"
  95 #include "modules_export.h"
  96
  97 /* how many blocks DVDRead will read in each loop */
  98 #define DVD_BLOCK_READ_ONCE 64
  99 #define DVD_DATA_READ_ONCE  (4 * DVD_BLOCK_READ_ONCE)
 100
 101 /* Size of netlist */
 102 #define DVD_NETLIST_SIZE    256
 103
 104 /*****************************************************************************
 105  * Local prototypes
 106  *****************************************************************************/
 107 /* called from outside */
 108 static int  DVDProbe    ( probedata_t *p_data );
 109 static void DVDInit     ( struct input_thread_s * );
 110 static void DVDEnd      ( struct input_thread_s * );
 111 static void DVDOpen     ( struct input_thread_s * );
 112 static void DVDClose    ( struct input_thread_s * );
 113 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 114 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 115 static void DVDSeek     ( struct input_thread_s *, off_t );
 116 static int  DVDRewind   ( struct input_thread_s * );
 117
 118 /* called only inside */
 119 static int  DVDChooseAngle( thread_dvd_data_t * );
 120 static int  DVDFindCell( thread_dvd_data_t * );
 121 static int  DVDFindSector( thread_dvd_data_t * );
 122 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 123
 124 /*****************************************************************************
 125  * Functions exported as capabilities. They are declared as static so that
 126  * we don't pollute the namespace too much.
 127  *****************************************************************************/
 128 void _M( input_getfunctions )( function_list_t * p_function_list )
 129 {
 130 #define input p_function_list->functions.input
 131     p_function_list->pf_probe = DVDProbe;
 132     input.pf_init             = DVDInit;
 133     input.pf_open             = DVDOpen;
 134     input.pf_close            = DVDClose;
 135     input.pf_end              = DVDEnd;
 136     input.pf_init_bit_stream  = InitBitstream;
 137     input.pf_read             = DVDRead;
 138     input.pf_set_area         = DVDSetArea;
 139     input.pf_demux            = input_DemuxPS;
 140     input.pf_new_packet       = DVDNewPacket;
 141     input.pf_new_pes          = DVDNewPES;
 142     input.pf_delete_packet    = DVDDeletePacket;
 143     input.pf_delete_pes       = DVDDeletePES;
 144     input.pf_rewind           = DVDRewind;
 145     input.pf_seek             = DVDSeek;
 146 #undef input
 147 }
 148
 149 /*
 150  * Data reading functions
 151  */
 152
 153 /*****************************************************************************
 154  * DVDProbe: verifies that the stream is a PS stream
 155  *****************************************************************************/
 156 static int DVDProbe( probedata_t *p_data )
 157 {
 158     input_thread_t * p_input = (input_thread_t *)p_data;
 159
 160     char * psz_name = p_input->p_source;
 161     int i_score = 5;
 162
 163     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 164     {
 165         return( 999 );
 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         i_score = 100;
 172         psz_name += 4;
 173     }
 174
 175     return( i_score );
 176 }
 177
 178 /*****************************************************************************
 179  * DVDInit: initializes DVD structures
 180  *****************************************************************************/
 181 static void DVDInit( input_thread_t * p_input )
 182 {
 183     thread_dvd_data_t *  p_dvd;
 184     input_area_t *       p_area;
 185     int                  i_title;
 186     int                  i_chapter;
 187     int                  i;
 188
 189     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 190     if( p_dvd == NULL )
 191     {
 192         intf_ErrMsg( "dvd error: out of memory" );
 193         p_input->b_error = 1;
 194         return;
 195     }
 196
 197     p_input->p_plugin_data = (void *)p_dvd;
 198     p_input->p_method_data = NULL;
 199
 200     p_dvd->dvdhandle = (dvdcss_handle) p_input->i_handle;
 201
 202     if( dvdcss_seek( p_dvd->dvdhandle, 0, DVDCSS_NOFLAGS ) < 0 )
 203     {
 204         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 205         p_input->b_error = 1;
 206         return;
 207     }
 208
 209     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 210      * DVD_DATA_READ_ONCE at most */
 211     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 212     /* this value mustn't be modifed */
 213     p_input->i_read_once = DVD_DATA_READ_ONCE;
 214
 215     /* Reading structures initialisation */
 216     p_input->p_method_data =
 217         DVDNetlistInit( DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
 218                         DVD_NETLIST_SIZE, DVD_LB_SIZE, p_dvd->i_block_once );
 219     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 220
 221     /* Ifo allocation & initialisation */
 222     if( IfoCreate( p_dvd ) < 0 )
 223     {
 224         intf_ErrMsg( "dvd error: allcation error in ifo" );
 225         dvdcss_close( p_dvd->dvdhandle );
 226         free( p_dvd );
 227         p_input->b_error = 1;
 228         return;
 229     }
 230
 231     if( IfoInit( p_dvd->p_ifo ) < 0 )
 232     {
 233         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 234         IfoDestroy( p_dvd->p_ifo );
 235         dvdcss_close( p_dvd->dvdhandle );
 236         free( p_dvd );
 237         p_input->b_error = 1;
 238         return;
 239     }
 240
 241     /* Set stream and area data */
 242     vlc_mutex_lock( &p_input->stream.stream_lock );
 243
 244     /* Initialize ES structures */
 245     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 246
 247 #define title_inf p_dvd->p_ifo->vmg.title_inf
 248     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 249
 250 #define area p_input->stream.pp_areas
 251     /* We start from 1 here since the default area 0
 252      * is reserved for video_ts.vob */
 253     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 254     {
 255         input_AddArea( p_input );
 256
 257         /* Titles are Program Chains */
 258         area[i]->i_id = i;
 259
 260         /* Absolute start offset and size
 261          * We can only set that with vts ifo, so we do it during the
 262          * first call to DVDSetArea */
 263         area[i]->i_start = 0;
 264         area[i]->i_size = 0;
 265
 266         /* Number of chapters */
 267         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 268         area[i]->i_part = 1;
 269
 270         /* Number of angles */
 271         area[i]->i_angle_nb = 0;
 272         area[i]->i_angle = 1;
 273
 274         /* Offset to vts_i_0.ifo */
 275         area[i]->i_plugin_data = p_dvd->p_ifo->i_start +
 276                        title_inf.p_attr[i-1].i_start_sector;
 277     }
 278 #undef area
 279
 280     /* Get requested title - if none try the first title */
 281     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 282     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 283     {
 284         i_title = 1;
 285     }
 286
 287 #undef title_inf
 288
 289     /* Get requested chapter - if none defaults to first one */
 290     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 291     if( i_chapter <= 0 )
 292     {
 293         i_chapter = 1;
 294     }
 295
 296     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 297
 298     p_area = p_input->stream.pp_areas[i_title];
 299
 300     /* set title, chapter, audio and subpic */
 301     DVDSetArea( p_input, p_area );
 302
 303     vlc_mutex_unlock( &p_input->stream.stream_lock );
 304
 305     return;
 306 }
 307
 308 /*****************************************************************************
 309  * DVDOpen: open dvd
 310  *****************************************************************************/
 311 static void DVDOpen( struct input_thread_s *p_input )
 312 {
 313     dvdcss_handle dvdhandle;
 314     int           i_flags;
 315
 316     vlc_mutex_lock( &p_input->stream.stream_lock );
 317
 318     /* If we are here we can control the pace... */
 319     p_input->stream.b_pace_control = 1;
 320
 321     p_input->stream.b_seekable = 1;
 322     p_input->stream.p_selected_area->i_size = 0;
 323
 324     p_input->stream.p_selected_area->i_tell = 0;
 325
 326     vlc_mutex_unlock( &p_input->stream.stream_lock );
 327
 328     /* Error messages from libdvdcss only in verbose mode */
 329     i_flags = p_main->i_warning_level ? DVDCSS_NOFLAGS : DVDCSS_INIT_QUIET;
 330
 331     /* Debug message from libdvdcss selected from config.h #define */
 332 #ifdef TRACE_DVDCSS
 333     i_flags |= DVDCSS_INIT_DEBUG;
 334 #endif
 335
 336     /* XXX: put this shit in an access plugin */
 337     if( strlen( p_input->p_source ) > 4
 338          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 339     {
 340         dvdhandle = dvdcss_open( p_input->p_source + 4, i_flags );
 341     }
 342     else
 343     {
 344         dvdhandle = dvdcss_open( p_input->p_source, i_flags );
 345     }
 346
 347     if( dvdhandle == NULL )
 348     {
 349         intf_ErrMsg( "dvd error: dvdcss can't open device" );
 350         p_input->b_error = 1;
 351         return;
 352     }
 353
 354     p_input->i_handle = (int) dvdhandle;
 355 }
 356
 357 /*****************************************************************************
 358  * DVDClose: close dvd
 359  *****************************************************************************/
 360 static void DVDClose( struct input_thread_s *p_input )
 361 {
 362     /* Clean up libdvdcss */
 363     dvdcss_close( (dvdcss_handle) p_input->i_handle );
 364 }
 365
 366 /*****************************************************************************
 367  * DVDEnd: frees unused data
 368  *****************************************************************************/
 369 static void DVDEnd( input_thread_t * p_input )
 370 {
 371     thread_dvd_data_t *     p_dvd;
 372     dvd_netlist_t *         p_netlist;
 373
 374     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 375     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 376
 377     IfoDestroy( p_dvd->p_ifo );
 378
 379     free( p_dvd );
 380
 381     DVDNetlistEnd( p_netlist );
 382 }
 383
 384 /*****************************************************************************
 385  * DVDSetArea: initialize input data for title x, chapter y.
 386  * It should be called for each user navigation request.
 387  *****************************************************************************
 388  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 389  * Note that you have to take the lock before entering here.
 390  *****************************************************************************/
 391 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 392 {
 393     thread_dvd_data_t *  p_dvd;
 394     es_descriptor_t *    p_es;
 395     u16                  i_id;
 396     int                  i_vts_title;
 397     int                  i_audio_nb = 0;
 398     int                  i_spu_nb = 0;
 399     int                  i_audio;
 400     int                  i_spu;
 401     int                  i;
 402
 403     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 404
 405     /* we can't use the interface slider until initilization is complete */
 406     p_input->stream.b_seekable = 0;
 407
 408     if( p_area != p_input->stream.p_selected_area )
 409     {
 410         /* Reset the Chapter position of the old title */
 411         p_input->stream.p_selected_area->i_part = 0;
 412
 413         /*
 414          *  We have to load all title information
 415          */
 416         /* Change the default area */
 417         p_input->stream.p_selected_area =
 418                     p_input->stream.pp_areas[p_area->i_id];
 419
 420         /* title number: it is not vts nb!,
 421          * it is what appears in the interface list */
 422         p_dvd->i_title = p_area->i_id;
 423         p_dvd->p_ifo->i_title = p_dvd->i_title;
 424
 425         /* set number of chapters of current title */
 426         p_dvd->i_chapter_nb = p_area->i_part_nb;
 427
 428         /* ifo vts */
 429         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 430         {
 431             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 432             free( p_dvd );
 433             p_input->b_error = 1;
 434             return -1;
 435         }
 436
 437 #define vmg p_dvd->p_ifo->vmg
 438 #define vts p_dvd->p_ifo->vts
 439         /* title position inside the selected vts */
 440         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 441         p_dvd->i_title_id =
 442             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 443
 444         intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
 445                          p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
 446
 447
 448         /*
 449          * Angle management
 450          */
 451         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 452         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 453         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 454         {
 455             p_dvd->i_angle = 1;
 456         }
 457
 458         /*
 459          * Set selected title start and size
 460          */
 461
 462         /* title set offset XXX: convert to block values */
 463         p_dvd->i_title_start =
 464             vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
 465
 466         /* last video cell */
 467         p_dvd->i_cell = 0;
 468         p_dvd->i_prg_cell = -1 +
 469             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 470
 471         if( DVDFindCell( p_dvd ) < 0 )
 472         {
 473             intf_ErrMsg( "dvd error: can't find title end" );
 474             p_input->b_error = 1;
 475             return -1;
 476         }
 477
 478         /* temporary hack to fix size in some dvds */
 479         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 480         {
 481             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 482         }
 483
 484         p_dvd->i_sector = 0;
 485         p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
 486
 487         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 488         {
 489             intf_ErrMsg( "dvd error: can't find first chapter" );
 490             p_input->b_error = 1;
 491             return -1;
 492         }
 493
 494         /*
 495          * Force libdvdcss to check its title key.
 496          * It is only useful for title cracking method. Methods using the decrypted
 497          * disc key are fast enough to check the key at each seek
 498          */
 499         if( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start, DVDCSS_SEEK_INI ) < 0 )
 500         {
 501             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 502             return -1;
 503         }
 504
 505         p_dvd->i_size -= p_dvd->i_sector + 1;
 506
 507         IfoPrintTitle( p_dvd );
 508
 509         /* Area definition */
 510         p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
 511         p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
 512         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 513         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 514
 515 #if 0
 516         /* start at the beginning of the title */
 517         /* FIXME: create a conf option to select whether to restart
 518          * title or not */
 519         p_input->stream.p_selected_area->i_tell = 0;
 520         p_input->stream.p_selected_area->i_part = 1;
 521 #endif
 522
 523         /*
 524          * Destroy obsolete ES by reinitializing program 0
 525          * and find all ES in title with ifo data
 526          */
 527         if( p_input->stream.pp_programs != NULL )
 528         {
 529             /* We don't use input_EndStream here since
 530              * we keep area structures */
 531
 532             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 533             {
 534                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 535             }
 536
 537             free( p_input->stream.pp_selected_es );
 538             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 539
 540             p_input->stream.pp_selected_es = NULL;
 541             p_input->stream.i_selected_es_number = 0;
 542         }
 543
 544         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 545
 546         /* No PSM to read in DVD mode, we already have all information */
 547         p_input->stream.pp_programs[0]->b_is_ok = 1;
 548
 549         p_es = NULL;
 550
 551         /* ES 0 -> video MPEG2 */
 552         IfoPrintVideo( p_dvd );
 553
 554         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 555         p_es->i_stream_id = 0xe0;
 556         p_es->i_type = MPEG2_VIDEO_ES;
 557         p_es->i_cat = VIDEO_ES;
 558         if( p_main->b_video )
 559         {
 560             input_SelectES( p_input, p_es );
 561         }
 562
 563 #define audio_status \
 564     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 565         /* Audio ES, in the order they appear in .ifo */
 566         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 567         {
 568             IfoPrintAudio( p_dvd, i );
 569
 570             /* audio channel is active if first byte is 0x80 */
 571             if( audio_status.i_available )
 572             {
 573                 i_audio_nb++;
 574
 575                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 576                 {
 577                 case 0x00:              /* AC3 */
 578                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 579                     p_es = input_AddES( p_input,
 580                                p_input->stream.pp_programs[0], i_id, 0 );
 581                     p_es->i_stream_id = 0xbd;
 582                     p_es->i_type = AC3_AUDIO_ES;
 583                     p_es->b_audio = 1;
 584                     p_es->i_cat = AUDIO_ES;
 585                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 586                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 587                     strcat( p_es->psz_desc, " (ac3)" );
 588
 589                     break;
 590                 case 0x02:
 591                 case 0x03:              /* MPEG audio */
 592                     i_id = 0xc0 + audio_status.i_position;
 593                     p_es = input_AddES( p_input,
 594                                     p_input->stream.pp_programs[0], i_id, 0 );
 595                     p_es->i_stream_id = i_id;
 596                     p_es->i_type = MPEG2_AUDIO_ES;
 597                     p_es->b_audio = 1;
 598                     p_es->i_cat = AUDIO_ES;
 599                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 600                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 601                     strcat( p_es->psz_desc, " (mpeg)" );
 602
 603                     break;
 604                 case 0x04:              /* LPCM */
 605
 606                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 607                     p_es = input_AddES( p_input,
 608                                     p_input->stream.pp_programs[0], i_id, 0 );
 609                     p_es->i_stream_id = i_id;
 610                     p_es->i_type = LPCM_AUDIO_ES;
 611                     p_es->b_audio = 1;
 612                     p_es->i_cat = AUDIO_ES;
 613                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 614                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 615                     strcat( p_es->psz_desc, " (lpcm)" );
 616
 617                     break;
 618                 case 0x06:              /* DTS */
 619                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 620                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 621                                  "(0x%x)", i_id );
 622                     break;
 623                 default:
 624                     i_id = 0;
 625                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 626                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 627                 }
 628             }
 629         }
 630 #undef audio_status
 631 #define spu_status \
 632     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 633
 634         /* Sub Picture ES */
 635
 636         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 637         {
 638             IfoPrintSpu( p_dvd, i );
 639
 640             if( spu_status.i_available )
 641             {
 642                 i_spu_nb++;
 643
 644                 /*  there are several streams for one spu */
 645                 if(  vts.manager_inf.video_attr.i_ratio )
 646                 {
 647                     /* 16:9 */
 648                     switch( vts.manager_inf.video_attr.i_perm_displ )
 649                     {
 650                     case 1:
 651                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 652                                | 0xbd;
 653                         break;
 654                     case 2:
 655                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 656                                | 0xbd;
 657                         break;
 658                     default:
 659                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 660                                | 0xbd;
 661                         break;
 662                     }
 663                 }
 664                 else
 665                 {
 666                     /* 4:3 */
 667                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 668                            | 0xbd;
 669                 }
 670                 p_es = input_AddES( p_input,
 671                                     p_input->stream.pp_programs[0], i_id, 0 );
 672                 p_es->i_stream_id = 0xbd;
 673                 p_es->i_type = DVD_SPU_ES;
 674                 p_es->i_cat = SPU_ES;
 675                 strcpy( p_es->psz_desc, IfoLanguage( hton16(
 676                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 677             }
 678         }
 679 #undef spu_status
 680         if( p_main->b_audio )
 681         {
 682             /* For audio: first one if none or a not existing one specified */
 683             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 684             if( i_audio < 0 || i_audio > i_audio_nb )
 685             {
 686                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 687                 i_audio = 1;
 688             }
 689             if( i_audio > 0 && i_audio_nb > 0 )
 690             {
 691                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 692                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 693                       REQUESTED_AC3 ) )
 694                 {
 695                     int     i_ac3 = i_audio;
 696                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 697                              AC3_AUDIO_ES ) && ( i_ac3 <=
 698                              vts.manager_inf.i_audio_nb ) )
 699                     {
 700                         i_ac3++;
 701                     }
 702                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 703                     {
 704                         input_SelectES( p_input,
 705                                         p_input->stream.pp_es[i_ac3] );
 706                     }
 707                 }
 708                 else
 709                 {
 710                     input_SelectES( p_input,
 711                                     p_input->stream.pp_es[i_audio] );
 712                 }
 713             }
 714         }
 715
 716         if( p_main->b_video )
 717         {
 718             /* for spu, default is none */
 719             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 720             if( i_spu < 0 || i_spu > i_spu_nb )
 721             {
 722                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 723                 i_spu = 0;
 724             }
 725             if( i_spu > 0 && i_spu_nb > 0 )
 726             {
 727                 i_spu += vts.manager_inf.i_audio_nb;
 728                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 729             }
 730         }
 731     } /* i_title >= 0 */
 732     else
 733     {
 734         p_area = p_input->stream.p_selected_area;
 735     }
 736 #undef vts
 737 #undef vmg
 738
 739     /*
 740      * Chapter selection
 741      */
 742
 743     if( p_area->i_part != p_dvd->i_chapter )
 744     {
 745         if( ( p_area->i_part > 0 ) &&
 746             ( p_area->i_part <= p_area->i_part_nb ))
 747         {
 748             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 749             {
 750                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 751                 p_input->b_error = 1;
 752                 return -1;
 753             }
 754
 755             p_input->stream.p_selected_area->i_tell =
 756                                    LB2OFF( p_dvd->i_start ) - p_area->i_start;
 757             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 758
 759             intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
 760                                         p_area->i_part, p_area->i_tell );
 761         }
 762         else
 763         {
 764             p_area->i_part = 1;
 765             p_dvd->i_chapter = 1;
 766         }
 767     }
 768
 769 #define title \
 770     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 771     if( p_area->i_angle != p_dvd->i_angle )
 772     {
 773         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 774         {
 775             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 776             {
 777                 p_dvd->i_cell = 0;
 778             }
 779             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 780             p_dvd->i_angle = p_area->i_angle;
 781
 782             DVDFindSector( p_dvd );
 783             p_dvd->i_cell += p_dvd->i_angle_cell;
 784         }
 785         else
 786         {
 787             p_dvd->i_angle = p_area->i_angle;
 788         }
 789
 790         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 791     }
 792
 793     /* warn interface that something has changed */
 794     p_input->stream.b_seekable = 1;
 795     p_input->stream.b_changed = 1;
 796
 797     return 0;
 798 }
 799
 800
 801 /*****************************************************************************
 802  * DVDRead: reads data packets into the netlist.
 803  *****************************************************************************
 804  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 805  * EOF.
 806  *****************************************************************************/
 807 static int DVDRead( input_thread_t * p_input,
 808                     data_packet_t ** pp_packets )
 809 {
 810     thread_dvd_data_t *     p_dvd;
 811     dvd_netlist_t *         p_netlist;
 812     struct iovec *          p_vec;
 813     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 814     u8 *                    pi_cur;
 815     int                     i_block_once;
 816     int                     i_packet_size;
 817     int                     i_iovec;
 818     int                     i_packet;
 819     int                     i_pos;
 820     int                     i_read_blocks;
 821     int                     i_sector;
 822     boolean_t               b_eof;
 823     boolean_t               b_eot;
 824     boolean_t               b_eoc;
 825
 826     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 827     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 828
 829     b_eoc = 0;
 830     i_sector = p_dvd->i_title_start + p_dvd->i_sector;
 831     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 832
 833
 834     /* Get the position of the next cell if we're at cell end */
 835     if( i_block_once <= 0 )
 836     {
 837         int     i_angle;
 838
 839         p_dvd->i_cell++;
 840         p_dvd->i_angle_cell++;
 841
 842         /* Find cell index in adress map */
 843         if( DVDFindSector( p_dvd ) < 0 )
 844         {
 845             pp_packets[0] = NULL;
 846             intf_ErrMsg( "dvd error: can't find next cell" );
 847             return 1;
 848         }
 849
 850         /* Position the fd pointer on the right address */
 851         if( ( i_sector = dvdcss_seek( p_dvd->dvdhandle,
 852                                       p_dvd->i_title_start + p_dvd->i_sector,
 853                                       DVDCSS_SEEK_MPEG ) ) < 0 )
 854         {
 855             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 856             return -1;
 857         }
 858
 859         /* update chapter : it will be easier when we have navigation
 860          * ES support */
 861         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 862         {
 863             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 864             {
 865                 i_angle = p_dvd->i_angle - 1;
 866             }
 867             else
 868             {
 869                 i_angle = 0;
 870             }
 871             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 872                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 873             {
 874                 p_dvd->i_chapter++;
 875                 b_eoc = 1;
 876             }
 877         }
 878
 879         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 880     }
 881
 882     /* The number of blocks read is the max between the requested
 883      * value and the leaving block in the cell */
 884     if( i_block_once > p_dvd->i_block_once )
 885     {
 886         i_block_once = p_dvd->i_block_once;
 887     }
 888 /*
 889 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 890 */
 891     p_netlist->i_read_once = i_block_once;
 892
 893     /* Get an iovec pointer */
 894     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 895     {
 896         intf_ErrMsg( "dvd error: can't get iovec" );
 897         return -1;
 898     }
 899
 900     /* Reads from DVD */
 901     i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
 902                                   i_block_once, DVDCSS_READ_DECRYPT );
 903
 904     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 905      * need know the real number of blocks read */
 906     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 907
 908     /* Update global position */
 909     p_dvd->i_sector += i_read_blocks;
 910
 911     i_packet = 0;
 912
 913     /* Read headers to compute payload length */
 914     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 915     {
 916         i_pos = 0;
 917
 918         while( i_pos < p_netlist->i_buffer_size )
 919         {
 920             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 921
 922             /*default header */
 923             if( U32_AT( pi_cur ) != 0x1BA )
 924             {
 925                 /* That's the case for all packets, except pack header. */
 926                 i_packet_size = U16_AT( pi_cur + 4 );
 927                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 928             }
 929             else
 930             {
 931                 /* MPEG-2 Pack header. */
 932                 i_packet_size = 8;
 933                 pp_packets[i_packet] = pp_data[i_iovec];
 934
 935             }
 936
 937             (*pp_data[i_iovec]->pi_refcount)++;
 938
 939             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 940
 941             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 942
 943             pp_packets[i_packet]->p_payload_start =
 944                     pp_packets[i_packet]->p_buffer + i_pos;
 945
 946             pp_packets[i_packet]->p_payload_end =
 947                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 948
 949             pp_packets[i_packet]->p_next = NULL;
 950             pp_packets[i_packet]->b_discard_payload = 0;
 951
 952             i_packet++;
 953             i_pos += i_packet_size + 6;
 954         }
 955     }
 956
 957     pp_packets[i_packet] = NULL;
 958
 959     vlc_mutex_lock( &p_input->stream.stream_lock );
 960
 961     p_input->stream.p_selected_area->i_tell =
 962         LB2OFF( i_sector + i_read_blocks ) -
 963         p_input->stream.p_selected_area->i_start;
 964     if( b_eoc )
 965     {
 966         /* We modify i_part only at end of chapter not to erase
 967          * some modification from the interface */
 968         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 969     }
 970
 971     b_eot = !( p_input->stream.p_selected_area->i_tell
 972                   < p_input->stream.p_selected_area->i_size );
 973     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 974
 975     if( b_eof )
 976     {
 977         vlc_mutex_unlock( &p_input->stream.stream_lock );
 978         return 1;
 979     }
 980
 981     if( b_eot )
 982     {
 983         intf_WarnMsg( 4, "dvd info: new title" );
 984         p_dvd->i_title++;
 985         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 986         vlc_mutex_unlock( &p_input->stream.stream_lock );
 987         return 0;
 988     }
 989
 990     vlc_mutex_unlock( &p_input->stream.stream_lock );
 991
 992     if( i_read_blocks == i_block_once )
 993     {
 994         return 0;
 995     }
 996
 997     return -1;
 998 }
 999
1000 /*****************************************************************************
1001  * DVDRewind : reads a stream backward
1002  *****************************************************************************/
1003 static int DVDRewind( input_thread_t * p_input )
1004 {
1005     return( -1 );
1006 }
1007
1008 /*****************************************************************************
1009  * DVDSeek : Goes to a given position on the stream.
1010  *****************************************************************************
1011  * This one is used by the input and translate chronological position from
1012  * input to logical position on the device.
1013  * The lock should be taken before calling this function.
1014  *****************************************************************************/
1015 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1016 {
1017     thread_dvd_data_t *     p_dvd;
1018     int                     i_block;
1019     int                     i_prg_cell;
1020     int                     i_cell;
1021     int                     i_chapter;
1022     int                     i_angle;
1023
1024     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1025
1026     /* we have to take care of offset of beginning of title */
1027     p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
1028                        - p_dvd->i_title_start;
1029
1030     i_prg_cell = 0;
1031     i_chapter = 0;
1032
1033     /* parse vobu address map to find program cell */
1034     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1035     {
1036         i_prg_cell++;
1037     }
1038
1039     p_dvd->i_prg_cell = i_prg_cell;
1040
1041     if( DVDChooseAngle( p_dvd ) < 0 )
1042     {
1043         p_input->b_error = 1;
1044         return;
1045     }
1046
1047     p_dvd->i_cell = 0;
1048
1049     /* Find first title cell which is inside program cell */
1050     if( DVDFindCell( p_dvd ) < 0 )
1051     {
1052         /* no following cell : we're at eof */
1053         intf_ErrMsg( "dvd error: cell seeking failed" );
1054         p_input->b_error = 1;
1055         return;
1056     }
1057
1058     i_cell = p_dvd->i_cell;
1059
1060 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1061     /* parse cell address map to find title cell containing sector */
1062     while( cell.i_end_sector < p_dvd->i_sector )
1063     {
1064         i_cell++;
1065     }
1066
1067     p_dvd->i_cell = i_cell;
1068
1069     /* if we're inside a multi-angle zone, we have to choose i_sector
1070      * in the current angle ; we can't do it all the time since cells
1071      * can be very wide out of such zones */
1072     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1073     {
1074         p_dvd->i_sector = MAX(
1075                 cell.i_start_sector,
1076                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1077     }
1078
1079     p_dvd->i_end_sector = MIN(
1080             cell.i_end_sector,
1081             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1082 #undef cell
1083     /* update chapter */
1084     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1085     {
1086         i_angle = p_dvd->i_angle - 1;
1087     }
1088     else
1089     {
1090         i_angle = 0;
1091     }
1092     if( p_dvd->i_chapter_nb > 1 )
1093     {
1094         while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1095                     ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1096                ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1097         {
1098             i_chapter++;
1099         }
1100     }
1101     else
1102     {
1103         i_chapter = 1;
1104     }
1105
1106     p_dvd->i_chapter = i_chapter;
1107     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1108
1109     if( ( i_block = dvdcss_seek( p_dvd->dvdhandle,
1110                                  p_dvd->i_title_start + p_dvd->i_sector,
1111                                  DVDCSS_SEEK_MPEG ) ) < 0 )
1112     {
1113         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1114         p_input->b_error = 1;
1115         return;
1116     }
1117
1118     p_input->stream.p_selected_area->i_tell =
1119         LB2OFF ( i_block ) - p_input->stream.p_selected_area->i_start;
1120
1121     intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1122                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1123
1124
1125     return;
1126 }
1127
1128 #define cell  p_dvd->p_ifo->vts.cell_inf
1129
1130 /*****************************************************************************
1131  * DVDFindCell: adjust the title cell index with the program cell
1132  *****************************************************************************/
1133 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1134 {
1135     int                 i_cell;
1136     int                 i_index;
1137
1138     i_cell = p_dvd->i_cell;
1139     i_index = p_dvd->i_prg_cell;
1140
1141     if( i_cell >= cell.i_cell_nb )
1142     {
1143         return -1;
1144     }
1145
1146     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1147                    cell.p_cell_map[i_cell].i_vob_id ) ||
1148       ( title.p_cell_pos[i_index].i_cell_id !=
1149                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1150            ( i_cell < cell.i_cell_nb - 1 ) )
1151     {
1152         i_cell++;
1153     }
1154
1155 /*
1156 intf_WarnMsg( 7, "FindCell: i_cell %d i_index %d found %d nb %d",
1157                     p_dvd->i_cell,
1158                     p_dvd->i_prg_cell,
1159                     i_cell,
1160                     cell.i_cell_nb );
1161 */
1162
1163     p_dvd->i_cell = i_cell;
1164
1165     return 0;
1166 }
1167
1168 #undef cell
1169
1170 /*****************************************************************************
1171  * DVDFindSector: find cell index in adress map from index in
1172  * information table program map and give corresponding sectors.
1173  *****************************************************************************/
1174 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1175 {
1176
1177     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1178     {
1179         p_dvd->i_prg_cell++;
1180
1181         if( DVDChooseAngle( p_dvd ) < 0 )
1182         {
1183             return -1;
1184         }
1185     }
1186
1187     if( DVDFindCell( p_dvd ) < 0 )
1188     {
1189         intf_ErrMsg( "dvd error: can't find sector" );
1190         return -1;
1191     }
1192
1193     /* Find start and end sectors of new cell */
1194 #if 1
1195     p_dvd->i_sector = MAX(
1196          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1197          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1198     p_dvd->i_end_sector = MIN(
1199          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1200          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1201 #else
1202     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1203     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1204 #endif
1205
1206 /*
1207     intf_WarnMsg( 7, "cell: %d sector1: 0x%x end1: 0x%x\n"
1208                    "index: %d sector2: 0x%x end2: 0x%x\n"
1209                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1210         p_dvd->i_cell,
1211         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1212         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1213         p_dvd->i_prg_cell,
1214         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1215         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1216         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1217         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1218         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1219 */
1220
1221     return 0;
1222 }
1223
1224 /*****************************************************************************
1225  * DVDChapterSelect: find the cell corresponding to requested chapter
1226  *****************************************************************************/
1227 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1228 {
1229
1230     /* Find cell index in Program chain for current chapter */
1231     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1232     p_dvd->i_cell = 0;
1233     p_dvd->i_sector = 0;
1234
1235     DVDChooseAngle( p_dvd );
1236
1237     /* Search for cell_index in cell adress_table and initialize
1238      * start sector */
1239     if( DVDFindSector( p_dvd ) < 0 )
1240     {
1241         intf_ErrMsg( "dvd error: can't select chapter" );
1242         return -1;
1243     }
1244
1245     /* start is : beginning of vts vobs + offset to vob x */
1246     p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1247
1248     /* Position the fd pointer on the right address */
1249     if( ( p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle,
1250                                         p_dvd->i_start,
1251                                         DVDCSS_SEEK_MPEG ) ) < 0 )
1252     {
1253         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1254         return -1;
1255     }
1256
1257     p_dvd->i_chapter = i_chapter;
1258     return 0;
1259 }
1260
1261 /*****************************************************************************
1262  * DVDChooseAngle: select the cell corresponding to the selected angle
1263  *****************************************************************************/
1264 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1265 {
1266     /* basic handling of angles */
1267     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1268                     >> 12 ) )
1269     {
1270         /* we enter a muli-angle section */
1271         case 0x5:
1272             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1273             p_dvd->i_angle_cell = 0;
1274             break;
1275         /* we exit a multi-angle section */
1276         case 0x9:
1277         case 0xd:
1278             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1279             break;
1280     }
1281
1282     return 0;
1283 }
1284
1285 #undef title