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 1.101 2001/11/27 12:33:20 massiot 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 "iso_lang.h"
  73 #include "tests.h"
  74
  75 #if defined( WIN32 )
  76 #   include "input_iovec.h"
  77 #endif
  78
  79 #include "intf_msg.h"
  80
  81 #include "main.h"
  82
  83 #include "modules.h"
  84 #include "modules_export.h"
  85
  86 #include "stream_control.h"
  87 #include "input_ext-intf.h"
  88 #include "input_ext-dec.h"
  89 #include "input_ext-plugins.h"
  90
  91 #include "input_dvd.h"
  92 #include "dvd_ifo.h"
  93 #include "dvd_summary.h"
  94
  95 #include "debug.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       = input_NetlistNewPacket;
 141     input.pf_new_pes          = input_NetlistNewPES;
 142     input.pf_delete_packet    = input_NetlistDeletePacket;
 143     input.pf_delete_pes       = input_NetlistDeletePES;
 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->p_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     input_NetlistInit( p_input, DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
 217                        DVD_NETLIST_SIZE, DVD_LB_SIZE, p_dvd->i_block_once );
 218     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 219
 220     /* Ifo allocation & initialisation */
 221     if( IfoCreate( p_dvd ) < 0 )
 222     {
 223         intf_ErrMsg( "dvd error: allcation error in ifo" );
 224         dvdcss_close( p_dvd->dvdhandle );
 225         free( p_dvd );
 226         p_input->b_error = 1;
 227         return;
 228     }
 229
 230     if( IfoInit( p_dvd->p_ifo ) < 0 )
 231     {
 232         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 233         IfoDestroy( p_dvd->p_ifo );
 234         dvdcss_close( p_dvd->dvdhandle );
 235         free( p_dvd );
 236         p_input->b_error = 1;
 237         return;
 238     }
 239
 240     /* Set stream and area data */
 241     vlc_mutex_lock( &p_input->stream.stream_lock );
 242
 243     /* Initialize ES structures */
 244     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 245
 246 #define title_inf p_dvd->p_ifo->vmg.title_inf
 247     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 248
 249 #define area p_input->stream.pp_areas
 250     /* We start from 1 here since the default area 0
 251      * is reserved for video_ts.vob */
 252     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 253     {
 254         input_AddArea( p_input );
 255
 256         /* Titles are Program Chains */
 257         area[i]->i_id = i;
 258
 259         /* Absolute start offset and size
 260          * We can only set that with vts ifo, so we do it during the
 261          * first call to DVDSetArea */
 262         area[i]->i_start = 0;
 263         area[i]->i_size = 0;
 264
 265         /* Number of chapters */
 266         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 267         area[i]->i_part = 1;
 268
 269         /* Number of angles */
 270         area[i]->i_angle_nb = 0;
 271         area[i]->i_angle = 1;
 272
 273         /* Offset to vts_i_0.ifo */
 274         area[i]->i_plugin_data = p_dvd->p_ifo->i_start +
 275                        title_inf.p_attr[i-1].i_start_sector;
 276     }
 277 #undef area
 278
 279     /* Get requested title - if none try the first title */
 280     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 281     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 282     {
 283         i_title = 1;
 284     }
 285
 286 #undef title_inf
 287
 288     /* Get requested chapter - if none defaults to first one */
 289     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 290     if( i_chapter <= 0 )
 291     {
 292         i_chapter = 1;
 293     }
 294
 295     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 296
 297     p_area = p_input->stream.pp_areas[i_title];
 298
 299     /* set title, chapter, audio and subpic */
 300     DVDSetArea( p_input, p_area );
 301
 302     vlc_mutex_unlock( &p_input->stream.stream_lock );
 303
 304     return;
 305 }
 306
 307 /*****************************************************************************
 308  * DVDOpen: open dvd
 309  *****************************************************************************/
 310 static void DVDOpen( struct input_thread_s *p_input )
 311 {
 312     dvdcss_handle dvdhandle;
 313     char * psz_parser;
 314     char * psz_device;
 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     /* Parse input string : dvd:device[:rawdevice] */
 329     if( strlen( p_input->p_source ) > 4
 330          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 331     {
 332         psz_parser = psz_device = p_input->p_source + 4;
 333     }
 334     else
 335     {
 336         psz_parser = psz_device = p_input->p_source;
 337     }
 338
 339     while( *psz_parser && *psz_parser != '@' )
 340     {
 341         *psz_parser++;
 342     }
 343
 344     if( *psz_parser == '@' )
 345     {
 346         /* Found raw device */
 347         *psz_parser = '\0';
 348         psz_parser++;
 349
 350         main_PutPszVariable( "DVDCSS_RAW_DEVICE", psz_parser );
 351     }
 352
 353     intf_WarnMsg( 2, "input: dvd=%s raw=%s", psz_device, psz_parser );
 354
 355     dvdhandle = dvdcss_open( psz_device );
 356
 357     if( dvdhandle == NULL )
 358     {
 359         intf_ErrMsg( "dvd error: dvdcss can't open device" );
 360         p_input->b_error = 1;
 361         return;
 362     }
 363
 364     p_input->p_handle = (void *) dvdhandle;
 365 }
 366
 367 /*****************************************************************************
 368  * DVDClose: close dvd
 369  *****************************************************************************/
 370 static void DVDClose( struct input_thread_s *p_input )
 371 {
 372     /* Clean up libdvdcss */
 373     dvdcss_close( (dvdcss_handle) p_input->p_handle );
 374 }
 375
 376 /*****************************************************************************
 377  * DVDEnd: frees unused data
 378  *****************************************************************************/
 379 static void DVDEnd( input_thread_t * p_input )
 380 {
 381     thread_dvd_data_t *     p_dvd;
 382
 383     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 384
 385     IfoDestroy( p_dvd->p_ifo );
 386
 387     free( p_dvd );
 388
 389     input_NetlistEnd( p_input );
 390 }
 391
 392 /*****************************************************************************
 393  * DVDSetArea: initialize input data for title x, chapter y.
 394  * It should be called for each user navigation request.
 395  *****************************************************************************
 396  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 397  * Note that you have to take the lock before entering here.
 398  *****************************************************************************/
 399 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 400 {
 401     thread_dvd_data_t *  p_dvd;
 402     es_descriptor_t *    p_es;
 403     u16                  i_id;
 404     int                  i_vts_title;
 405     int                  i_audio_nb = 0;
 406     int                  i_spu_nb = 0;
 407     int                  i_audio;
 408     int                  i_spu;
 409     int                  i;
 410
 411     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 412
 413     /* we can't use the interface slider until initilization is complete */
 414     p_input->stream.b_seekable = 0;
 415
 416     if( p_area != p_input->stream.p_selected_area )
 417     {
 418         /* Reset the Chapter position of the old title */
 419         p_input->stream.p_selected_area->i_part = 0;
 420
 421         /*
 422          *  We have to load all title information
 423          */
 424         /* Change the default area */
 425         p_input->stream.p_selected_area =
 426                     p_input->stream.pp_areas[p_area->i_id];
 427
 428         /* title number: it is not vts nb!,
 429          * it is what appears in the interface list */
 430         p_dvd->i_title = p_area->i_id;
 431         p_dvd->p_ifo->i_title = p_dvd->i_title;
 432
 433         /* set number of chapters of current title */
 434         p_dvd->i_chapter_nb = p_area->i_part_nb;
 435
 436         /* ifo vts */
 437         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 438         {
 439             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 440             free( p_dvd );
 441             p_input->b_error = 1;
 442             return -1;
 443         }
 444
 445 #define vmg p_dvd->p_ifo->vmg
 446 #define vts p_dvd->p_ifo->vts
 447         /* title position inside the selected vts */
 448         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 449         p_dvd->i_title_id =
 450             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 451
 452         intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
 453                          p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
 454
 455
 456         /*
 457          * Angle management
 458          */
 459         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 460         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 461         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 462         {
 463             p_dvd->i_angle = 1;
 464         }
 465
 466         /*
 467          * Set selected title start and size
 468          */
 469
 470         /* title set offset XXX: convert to block values */
 471         p_dvd->i_title_start =
 472             vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
 473
 474         /* last video cell */
 475         p_dvd->i_cell = 0;
 476         p_dvd->i_prg_cell = -1 +
 477             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 478
 479         if( DVDFindCell( p_dvd ) < 0 )
 480         {
 481             intf_ErrMsg( "dvd error: can't find title end" );
 482             p_input->b_error = 1;
 483             return -1;
 484         }
 485
 486         /* temporary hack to fix size in some dvds */
 487         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 488         {
 489             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 490         }
 491
 492         p_dvd->i_sector = 0;
 493         p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
 494
 495         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 496         {
 497             intf_ErrMsg( "dvd error: can't find first chapter" );
 498             p_input->b_error = 1;
 499             return -1;
 500         }
 501
 502         /* Force libdvdcss to check its title key.
 503          * It is only useful for title cracking method. Methods using the
 504          * decrypted disc key are fast enough to check the key at each seek */
 505
 506         if( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start,
 507                                 DVDCSS_SEEK_KEY ) < 0 )
 508         {
 509             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 510             return -1;
 511         }
 512
 513         p_dvd->i_size -= p_dvd->i_sector + 1;
 514
 515         IfoPrintTitle( p_dvd );
 516
 517         /* Area definition */
 518         p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
 519         p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
 520         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 521         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 522
 523 #if 0
 524         /* start at the beginning of the title */
 525         /* FIXME: create a conf option to select whether to restart
 526          * title or not */
 527         p_input->stream.p_selected_area->i_tell = 0;
 528         p_input->stream.p_selected_area->i_part = 1;
 529 #endif
 530
 531         /*
 532          * Destroy obsolete ES by reinitializing program 0
 533          * and find all ES in title with ifo data
 534          */
 535         if( p_input->stream.pp_programs != NULL )
 536         {
 537             /* We don't use input_EndStream here since
 538              * we keep area structures */
 539
 540             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 541             {
 542                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 543             }
 544
 545             free( p_input->stream.pp_selected_es );
 546             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 547
 548             p_input->stream.pp_selected_es = NULL;
 549             p_input->stream.i_selected_es_number = 0;
 550         }
 551
 552         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 553
 554         /* No PSM to read in DVD mode, we already have all information */
 555         p_input->stream.pp_programs[0]->b_is_ok = 1;
 556
 557         p_es = NULL;
 558
 559         /* ES 0 -> video MPEG2 */
 560         IfoPrintVideo( p_dvd );
 561
 562         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 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.pp_programs[0], 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.pp_programs[0], i_id, 0 );
 603                     p_es->i_stream_id = i_id;
 604                     p_es->i_type = MPEG2_AUDIO_ES;
 605                     p_es->b_audio = 1;
 606                     p_es->i_cat = AUDIO_ES;
 607                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 608                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 609                     strcat( p_es->psz_desc, " (mpeg)" );
 610
 611                     break;
 612                 case 0x04:              /* LPCM */
 613
 614                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 615                     p_es = input_AddES( p_input,
 616                                     p_input->stream.pp_programs[0], i_id, 0 );
 617                     p_es->i_stream_id = 0xbd;
 618                     p_es->i_type = LPCM_AUDIO_ES;
 619                     p_es->b_audio = 1;
 620                     p_es->i_cat = AUDIO_ES;
 621                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 622                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 623                     strcat( p_es->psz_desc, " (lpcm)" );
 624
 625                     break;
 626                 case 0x06:              /* DTS */
 627                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 628                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 629                                  "(0x%x)", i_id );
 630                     break;
 631                 default:
 632                     i_id = 0;
 633                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 634                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 635                 }
 636             }
 637         }
 638 #undef audio_status
 639 #define spu_status \
 640     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 641
 642         /* Sub Picture ES */
 643
 644         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 645         {
 646             IfoPrintSpu( p_dvd, i );
 647
 648             if( spu_status.i_available )
 649             {
 650                 i_spu_nb++;
 651
 652                 /*  there are several streams for one spu */
 653                 if(  vts.manager_inf.video_attr.i_ratio )
 654                 {
 655                     /* 16:9 */
 656                     switch( vts.manager_inf.video_attr.i_perm_displ )
 657                     {
 658                     case 1:
 659                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 660                                | 0xbd;
 661                         break;
 662                     case 2:
 663                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 664                                | 0xbd;
 665                         break;
 666                     default:
 667                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 668                                | 0xbd;
 669                         break;
 670                     }
 671                 }
 672                 else
 673                 {
 674                     /* 4:3 */
 675                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 676                            | 0xbd;
 677                 }
 678                 p_es = input_AddES( p_input,
 679                                     p_input->stream.pp_programs[0], i_id, 0 );
 680                 p_es->i_stream_id = 0xbd;
 681                 p_es->i_type = DVD_SPU_ES;
 682                 p_es->i_cat = SPU_ES;
 683                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 684                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 685             }
 686         }
 687 #undef spu_status
 688         if( p_main->b_audio )
 689         {
 690             /* For audio: first one if none or a not existing one specified */
 691             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 692             if( i_audio < 0 || i_audio > i_audio_nb )
 693             {
 694                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 695                 i_audio = 1;
 696             }
 697             if( i_audio > 0 && i_audio_nb > 0 )
 698             {
 699                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 700                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 701                       REQUESTED_AC3 ) )
 702                 {
 703                     int     i_ac3 = i_audio;
 704                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 705                              AC3_AUDIO_ES ) && ( i_ac3 <=
 706                              vts.manager_inf.i_audio_nb ) )
 707                     {
 708                         i_ac3++;
 709                     }
 710                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 711                     {
 712                         input_SelectES( p_input,
 713                                         p_input->stream.pp_es[i_ac3] );
 714                     }
 715                 }
 716                 else
 717                 {
 718                     input_SelectES( p_input,
 719                                     p_input->stream.pp_es[i_audio] );
 720                 }
 721             }
 722         }
 723
 724         if( p_main->b_video )
 725         {
 726             /* for spu, default is none */
 727             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 728             if( i_spu < 0 || i_spu > i_spu_nb )
 729             {
 730                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 731                 i_spu = 0;
 732             }
 733             if( i_spu > 0 && i_spu_nb > 0 )
 734             {
 735                 i_spu += vts.manager_inf.i_audio_nb;
 736                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 737             }
 738         }
 739     } /* i_title >= 0 */
 740     else
 741     {
 742         p_area = p_input->stream.p_selected_area;
 743     }
 744 #undef vts
 745 #undef vmg
 746
 747     /*
 748      * Chapter selection
 749      */
 750
 751     if( p_area->i_part != p_dvd->i_chapter )
 752     {
 753         if( ( p_area->i_part > 0 ) &&
 754             ( p_area->i_part <= p_area->i_part_nb ))
 755         {
 756             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 757             {
 758                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 759                 p_input->b_error = 1;
 760                 return -1;
 761             }
 762
 763             p_input->stream.p_selected_area->i_tell =
 764                                    LB2OFF( p_dvd->i_start ) - p_area->i_start;
 765             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 766
 767             intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
 768                                         p_area->i_part, p_area->i_tell );
 769         }
 770         else
 771         {
 772             p_area->i_part = 1;
 773             p_dvd->i_chapter = 1;
 774         }
 775     }
 776
 777 #define title \
 778     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 779     if( p_area->i_angle != p_dvd->i_angle )
 780     {
 781         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 782         {
 783             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 784             {
 785                 p_dvd->i_cell = 0;
 786             }
 787             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 788             p_dvd->i_angle = p_area->i_angle;
 789
 790             DVDFindSector( p_dvd );
 791             p_dvd->i_cell += p_dvd->i_angle_cell;
 792         }
 793         else
 794         {
 795             p_dvd->i_angle = p_area->i_angle;
 796         }
 797
 798         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 799     }
 800
 801     /* warn interface that something has changed */
 802     p_input->stream.b_seekable = 1;
 803     p_input->stream.b_changed = 1;
 804
 805     return 0;
 806 }
 807
 808
 809 /*****************************************************************************
 810  * DVDRead: reads data packets into the netlist.
 811  *****************************************************************************
 812  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 813  * EOF.
 814  *****************************************************************************/
 815 static int DVDRead( input_thread_t * p_input,
 816                     data_packet_t ** pp_packets )
 817 {
 818     thread_dvd_data_t *     p_dvd;
 819     netlist_t *             p_netlist;
 820     struct iovec *          p_vec;
 821     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 822     u8 *                    pi_cur;
 823     int                     i_block_once;
 824     int                     i_packet_size;
 825     int                     i_iovec;
 826     int                     i_packet;
 827     int                     i_pos;
 828     int                     i_read_blocks;
 829     int                     i_sector;
 830     boolean_t               b_eof;
 831     boolean_t               b_eot;
 832     boolean_t               b_eoc;
 833
 834     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 835     p_netlist = (netlist_t *)p_input->p_method_data;
 836
 837     b_eoc = 0;
 838     i_sector = p_dvd->i_title_start + p_dvd->i_sector;
 839     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 840
 841
 842     /* Get the position of the next cell if we're at cell end */
 843     if( i_block_once <= 0 )
 844     {
 845         int     i_angle;
 846
 847         p_dvd->i_cell++;
 848         p_dvd->i_angle_cell++;
 849
 850         /* Find cell index in adress map */
 851         if( DVDFindSector( p_dvd ) < 0 )
 852         {
 853             pp_packets[0] = NULL;
 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     p_netlist->i_read_once = i_block_once;
 900
 901     /* Get an iovec pointer */
 902     if( ( p_vec = input_NetlistGetiovec( p_netlist ) ) == NULL )
 903     {
 904         intf_ErrMsg( "dvd error: can't get iovec" );
 905         return -1;
 906     }
 907
 908     /* Reads from DVD */
 909     i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
 910                                   i_block_once, DVDCSS_READ_DECRYPT );
 911
 912     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 913      * need know the real number of blocks read */
 914     input_NetlistMviovec( p_netlist, i_read_blocks, pp_data );
 915
 916     /* Update global position */
 917     p_dvd->i_sector += i_read_blocks;
 918
 919     i_packet = 0;
 920
 921     /* Read headers to compute payload length */
 922     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 923     {
 924         i_pos = 0;
 925
 926         while( i_pos < p_netlist->i_buffer_size )
 927         {
 928             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 929
 930             /*default header */
 931             if( U32_AT( pi_cur ) != 0x1BA )
 932             {
 933                 /* That's the case for all packets, except pack header. */
 934                 i_packet_size = U16_AT( pi_cur + 4 );
 935                 pp_packets[i_packet] = input_NetlistNewPtr( p_netlist );
 936                 (*pp_data[i_iovec]->pi_refcount)++;
 937                 pp_packets[i_packet]->pi_refcount =
 938                     pp_data[i_iovec]->pi_refcount;
 939                 pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 940             }
 941             else
 942             {
 943                 /* MPEG-2 Pack header. */
 944                 i_packet_size = 8;
 945                 pp_packets[i_packet] = pp_data[i_iovec];
 946             }
 947
 948             pp_packets[i_packet]->p_payload_start =
 949                     pp_packets[i_packet]->p_buffer + i_pos;
 950
 951             pp_packets[i_packet]->p_payload_end =
 952                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 953
 954             i_packet++;
 955             i_pos += i_packet_size + 6;
 956         }
 957     }
 958
 959     pp_packets[i_packet] = NULL;
 960
 961     vlc_mutex_lock( &p_input->stream.stream_lock );
 962
 963     p_input->stream.p_selected_area->i_tell =
 964         LB2OFF( i_sector + i_read_blocks ) -
 965         p_input->stream.p_selected_area->i_start;
 966     if( b_eoc )
 967     {
 968         /* We modify i_part only at end of chapter not to erase
 969          * some modification from the interface */
 970         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 971     }
 972
 973     b_eot = !( p_input->stream.p_selected_area->i_tell
 974                   < p_input->stream.p_selected_area->i_size );
 975     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 976
 977     if( b_eof )
 978     {
 979         vlc_mutex_unlock( &p_input->stream.stream_lock );
 980         return 1;
 981     }
 982
 983     if( b_eot )
 984     {
 985         intf_WarnMsg( 4, "dvd info: new title" );
 986         p_dvd->i_title++;
 987         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 988         vlc_mutex_unlock( &p_input->stream.stream_lock );
 989         return 0;
 990     }
 991
 992     vlc_mutex_unlock( &p_input->stream.stream_lock );
 993
 994     if( i_read_blocks == i_block_once )
 995     {
 996         return 0;
 997     }
 998
 999     return -1;
1000 }
1001
1002 /*****************************************************************************
1003  * DVDRewind : reads a stream backward
1004  *****************************************************************************/
1005 static int DVDRewind( input_thread_t * p_input )
1006 {
1007     return( -1 );
1008 }
1009
1010 /*****************************************************************************
1011  * DVDSeek : Goes to a given position on the stream.
1012  *****************************************************************************
1013  * This one is used by the input and translate chronological position from
1014  * input to logical position on the device.
1015  * The lock should be taken before calling this function.
1016  *****************************************************************************/
1017 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1018 {
1019     thread_dvd_data_t *     p_dvd;
1020     int                     i_block;
1021     int                     i_prg_cell;
1022     int                     i_cell;
1023     int                     i_chapter;
1024     int                     i_angle;
1025
1026     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1027
1028     /* we have to take care of offset of beginning of title */
1029     p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
1030                        - p_dvd->i_title_start;
1031
1032     i_prg_cell = 0;
1033     i_chapter = 0;
1034
1035     /* parse vobu address map to find program cell */
1036     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1037     {
1038         i_prg_cell++;
1039     }
1040
1041     p_dvd->i_prg_cell = i_prg_cell;
1042
1043     if( DVDChooseAngle( p_dvd ) < 0 )
1044     {
1045         p_input->b_error = 1;
1046         return;
1047     }
1048
1049     p_dvd->i_cell = 0;
1050
1051     /* Find first title cell which is inside program cell */
1052     if( DVDFindCell( p_dvd ) < 0 )
1053     {
1054         /* no following cell : we're at eof */
1055         intf_ErrMsg( "dvd error: cell seeking failed" );
1056         p_input->b_error = 1;
1057         return;
1058     }
1059
1060     i_cell = p_dvd->i_cell;
1061
1062 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1063     /* parse cell address map to find title cell containing sector */
1064     while( cell.i_end_sector < p_dvd->i_sector )
1065     {
1066         i_cell++;
1067     }
1068
1069     p_dvd->i_cell = i_cell;
1070
1071     /* if we're inside a multi-angle zone, we have to choose i_sector
1072      * in the current angle ; we can't do it all the time since cells
1073      * can be very wide out of such zones */
1074     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1075     {
1076         p_dvd->i_sector = MAX(
1077                 cell.i_start_sector,
1078                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1079     }
1080
1081     p_dvd->i_end_sector = MIN(
1082             cell.i_end_sector,
1083             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1084 #undef cell
1085     /* update chapter */
1086     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1087     {
1088         i_angle = p_dvd->i_angle - 1;
1089     }
1090     else
1091     {
1092         i_angle = 0;
1093     }
1094     if( p_dvd->i_chapter_nb > 1 )
1095     {
1096         while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1097                     ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1098                ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1099         {
1100             i_chapter++;
1101         }
1102     }
1103     else
1104     {
1105         i_chapter = 1;
1106     }
1107
1108     p_dvd->i_chapter = i_chapter;
1109     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1110
1111     if( ( i_block = dvdcss_seek( p_dvd->dvdhandle,
1112                                  p_dvd->i_title_start + p_dvd->i_sector,
1113                                  DVDCSS_SEEK_MPEG ) ) < 0 )
1114     {
1115         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1116         p_input->b_error = 1;
1117         return;
1118     }
1119
1120     p_input->stream.p_selected_area->i_tell =
1121         LB2OFF ( i_block ) - p_input->stream.p_selected_area->i_start;
1122
1123     intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1124                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1125
1126
1127     return;
1128 }
1129
1130 #define cell  p_dvd->p_ifo->vts.cell_inf
1131
1132 /*****************************************************************************
1133  * DVDFindCell: adjust the title cell index with the program cell
1134  *****************************************************************************/
1135 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1136 {
1137     int                 i_cell;
1138     int                 i_index;
1139
1140     i_cell = p_dvd->i_cell;
1141     i_index = p_dvd->i_prg_cell;
1142
1143     if( i_cell >= cell.i_cell_nb )
1144     {
1145         return -1;
1146     }
1147
1148     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1149                    cell.p_cell_map[i_cell].i_vob_id ) ||
1150       ( title.p_cell_pos[i_index].i_cell_id !=
1151                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1152            ( i_cell < cell.i_cell_nb - 1 ) )
1153     {
1154         i_cell++;
1155     }
1156
1157 /*
1158 intf_WarnMsg( 12, "FindCell: i_cell %d i_index %d found %d nb %d",
1159                     p_dvd->i_cell,
1160                     p_dvd->i_prg_cell,
1161                     i_cell,
1162                     cell.i_cell_nb );
1163 */
1164
1165     p_dvd->i_cell = i_cell;
1166
1167     return 0;
1168 }
1169
1170 #undef cell
1171
1172 /*****************************************************************************
1173  * DVDFindSector: find cell index in adress map from index in
1174  * information table program map and give corresponding sectors.
1175  *****************************************************************************/
1176 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1177 {
1178
1179     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1180     {
1181         p_dvd->i_prg_cell++;
1182
1183         if( DVDChooseAngle( p_dvd ) < 0 )
1184         {
1185             return -1;
1186         }
1187     }
1188
1189     if( DVDFindCell( p_dvd ) < 0 )
1190     {
1191         intf_ErrMsg( "dvd error: can't find sector" );
1192         return -1;
1193     }
1194
1195     /* Find start and end sectors of new cell */
1196 #if 1
1197     p_dvd->i_sector = MAX(
1198          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1199          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1200     p_dvd->i_end_sector = MIN(
1201          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1202          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1203 #else
1204     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1205     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1206 #endif
1207
1208 /*
1209     intf_WarnMsg( 12, "cell: %d sector1: 0x%x end1: 0x%x\n"
1210                    "index: %d sector2: 0x%x end2: 0x%x\n"
1211                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1212         p_dvd->i_cell,
1213         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1214         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1215         p_dvd->i_prg_cell,
1216         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1217         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1218         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1219         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1220         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1221 */
1222
1223     return 0;
1224 }
1225
1226 /*****************************************************************************
1227  * DVDChapterSelect: find the cell corresponding to requested chapter
1228  *****************************************************************************/
1229 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1230 {
1231
1232     /* Find cell index in Program chain for current chapter */
1233     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1234     p_dvd->i_cell = 0;
1235     p_dvd->i_sector = 0;
1236
1237     DVDChooseAngle( p_dvd );
1238
1239     /* Search for cell_index in cell adress_table and initialize
1240      * start sector */
1241     if( DVDFindSector( p_dvd ) < 0 )
1242     {
1243         intf_ErrMsg( "dvd error: can't select chapter" );
1244         return -1;
1245     }
1246
1247     /* start is : beginning of vts vobs + offset to vob x */
1248     p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1249
1250     /* Position the fd pointer on the right address */
1251     if( ( p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle,
1252                                         p_dvd->i_start,
1253                                         DVDCSS_SEEK_MPEG ) ) < 0 )
1254     {
1255         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1256         return -1;
1257     }
1258
1259     p_dvd->i_chapter = i_chapter;
1260     return 0;
1261 }
1262
1263 /*****************************************************************************
1264  * DVDChooseAngle: select the cell corresponding to the selected angle
1265  *****************************************************************************/
1266 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1267 {
1268     /* basic handling of angles */
1269     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1270                     >> 12 ) )
1271     {
1272         /* we enter a muli-angle section */
1273         case 0x5:
1274             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1275             p_dvd->i_angle_cell = 0;
1276             break;
1277         /* we exit a multi-angle section */
1278         case 0x9:
1279         case 0xd:
1280             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1281             break;
1282     }
1283
1284     return 0;
1285 }
1286
1287 #undef title