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 1.92 2001/11/07 17:37:16 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 "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 "stream_control.h"
  84 #include "input_ext-intf.h"
  85 #include "input_ext-dec.h"
  86 #include "input_ext-plugins.h"
  87
  88 #include "input_dvd.h"
  89 #include "dvd_netlist.h"
  90 #include "dvd_ifo.h"
  91 #include "dvd_summary.h"
  92
  93 #include "debug.h"
  94
  95 #include "modules.h"
  96 #include "modules_export.h"
  97
  98 /* how many blocks DVDRead will read in each loop */
  99 #define DVD_BLOCK_READ_ONCE 64
 100 #define DVD_DATA_READ_ONCE  (4 * DVD_BLOCK_READ_ONCE)
 101
 102 /* Size of netlist */
 103 #define DVD_NETLIST_SIZE    256
 104
 105 /*****************************************************************************
 106  * Local prototypes
 107  *****************************************************************************/
 108 /* called from outside */
 109 static int  DVDProbe    ( probedata_t *p_data );
 110 static void DVDInit     ( struct input_thread_s * );
 111 static void DVDEnd      ( struct input_thread_s * );
 112 static void DVDOpen     ( struct input_thread_s * );
 113 static void DVDClose    ( struct input_thread_s * );
 114 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 115 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 116 static void DVDSeek     ( struct input_thread_s *, off_t );
 117 static int  DVDRewind   ( struct input_thread_s * );
 118
 119 /* called only inside */
 120 static int  DVDChooseAngle( thread_dvd_data_t * );
 121 static int  DVDFindCell( thread_dvd_data_t * );
 122 static int  DVDFindSector( thread_dvd_data_t * );
 123 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 124
 125 /*****************************************************************************
 126  * Functions exported as capabilities. They are declared as static so that
 127  * we don't pollute the namespace too much.
 128  *****************************************************************************/
 129 void _M( input_getfunctions )( function_list_t * p_function_list )
 130 {
 131 #define input p_function_list->functions.input
 132     p_function_list->pf_probe = DVDProbe;
 133     input.pf_init             = DVDInit;
 134     input.pf_open             = DVDOpen;
 135     input.pf_close            = DVDClose;
 136     input.pf_end              = DVDEnd;
 137     input.pf_init_bit_stream  = InitBitstream;
 138     input.pf_read             = DVDRead;
 139     input.pf_set_area         = DVDSetArea;
 140     input.pf_demux            = input_DemuxPS;
 141     input.pf_new_packet       = DVDNewPacket;
 142     input.pf_new_pes          = DVDNewPES;
 143     input.pf_delete_packet    = DVDDeletePacket;
 144     input.pf_delete_pes       = DVDDeletePES;
 145     input.pf_rewind           = DVDRewind;
 146     input.pf_seek             = DVDSeek;
 147 #undef input
 148 }
 149
 150 /*
 151  * Data reading functions
 152  */
 153
 154 /*****************************************************************************
 155  * DVDProbe: verifies that the stream is a PS stream
 156  *****************************************************************************/
 157 static int DVDProbe( probedata_t *p_data )
 158 {
 159     input_thread_t * p_input = (input_thread_t *)p_data;
 160
 161     char * psz_name = p_input->p_source;
 162     int i_score = 5;
 163
 164     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 165     {
 166         return( 999 );
 167     }
 168
 169     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 170     {
 171         /* If the user specified "dvd:" then it's probably a DVD */
 172         i_score = 100;
 173         psz_name += 4;
 174     }
 175
 176     return( i_score );
 177 }
 178
 179 /*****************************************************************************
 180  * DVDInit: initializes DVD structures
 181  *****************************************************************************/
 182 static void DVDInit( input_thread_t * p_input )
 183 {
 184     thread_dvd_data_t *  p_dvd;
 185     input_area_t *       p_area;
 186     int                  i_title;
 187     int                  i_chapter;
 188     int                  i;
 189
 190     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 191     if( p_dvd == NULL )
 192     {
 193         intf_ErrMsg( "dvd error: out of memory" );
 194         p_input->b_error = 1;
 195         return;
 196     }
 197
 198     p_input->p_plugin_data = (void *)p_dvd;
 199     p_input->p_method_data = NULL;
 200
 201     p_dvd->dvdhandle = (dvdcss_handle) p_input->i_handle;
 202
 203     if( dvdcss_seek( p_dvd->dvdhandle, 0, DVDCSS_NOFLAGS ) < 0 )
 204     {
 205         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 206         p_input->b_error = 1;
 207         return;
 208     }
 209
 210     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 211      * DVD_DATA_READ_ONCE at most */
 212     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 213     /* this value mustn't be modifed */
 214     p_input->i_read_once = DVD_DATA_READ_ONCE;
 215
 216     /* Reading structures initialisation */
 217     p_input->p_method_data =
 218         DVDNetlistInit( DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
 219                         DVD_NETLIST_SIZE, DVD_LB_SIZE, p_dvd->i_block_once );
 220     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 221
 222     /* Ifo allocation & initialisation */
 223     if( IfoCreate( p_dvd ) < 0 )
 224     {
 225         intf_ErrMsg( "dvd error: allcation error in ifo" );
 226         dvdcss_close( p_dvd->dvdhandle );
 227         free( p_dvd );
 228         p_input->b_error = 1;
 229         return;
 230     }
 231
 232     if( IfoInit( p_dvd->p_ifo ) < 0 )
 233     {
 234         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 235         IfoDestroy( p_dvd->p_ifo );
 236         dvdcss_close( p_dvd->dvdhandle );
 237         free( p_dvd );
 238         p_input->b_error = 1;
 239         return;
 240     }
 241
 242     /* Set stream and area data */
 243     vlc_mutex_lock( &p_input->stream.stream_lock );
 244
 245     /* Initialize ES structures */
 246     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 247
 248 #define title_inf p_dvd->p_ifo->vmg.title_inf
 249     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 250
 251 #define area p_input->stream.pp_areas
 252     /* We start from 1 here since the default area 0
 253      * is reserved for video_ts.vob */
 254     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 255     {
 256         input_AddArea( p_input );
 257
 258         /* Titles are Program Chains */
 259         area[i]->i_id = i;
 260
 261         /* Absolute start offset and size
 262          * We can only set that with vts ifo, so we do it during the
 263          * first call to DVDSetArea */
 264         area[i]->i_start = 0;
 265         area[i]->i_size = 0;
 266
 267         /* Number of chapters */
 268         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 269         area[i]->i_part = 1;
 270
 271         /* Number of angles */
 272         area[i]->i_angle_nb = 0;
 273         area[i]->i_angle = 1;
 274
 275         /* Offset to vts_i_0.ifo */
 276         area[i]->i_plugin_data = p_dvd->p_ifo->i_start +
 277                        title_inf.p_attr[i-1].i_start_sector;
 278     }
 279 #undef area
 280
 281     /* Get requested title - if none try the first title */
 282     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 283     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 284     {
 285         i_title = 1;
 286     }
 287
 288 #undef title_inf
 289
 290     /* Get requested chapter - if none defaults to first one */
 291     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 292     if( i_chapter <= 0 )
 293     {
 294         i_chapter = 1;
 295     }
 296
 297     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 298
 299     p_area = p_input->stream.pp_areas[i_title];
 300
 301     /* set title, chapter, audio and subpic */
 302     DVDSetArea( p_input, p_area );
 303
 304     vlc_mutex_unlock( &p_input->stream.stream_lock );
 305
 306     return;
 307 }
 308
 309 /*****************************************************************************
 310  * DVDOpen: open dvd
 311  *****************************************************************************/
 312 static void DVDOpen( struct input_thread_s *p_input )
 313 {
 314     dvdcss_handle dvdhandle;
 315     int           i_flags;
 316
 317     vlc_mutex_lock( &p_input->stream.stream_lock );
 318
 319     /* If we are here we can control the pace... */
 320     p_input->stream.b_pace_control = 1;
 321
 322     p_input->stream.b_seekable = 1;
 323     p_input->stream.p_selected_area->i_size = 0;
 324
 325     p_input->stream.p_selected_area->i_tell = 0;
 326
 327     vlc_mutex_unlock( &p_input->stream.stream_lock );
 328
 329     /* Error messages from libdvdcss only in verbose mode */
 330     i_flags = p_main->i_warning_level ? DVDCSS_NOFLAGS : DVDCSS_INIT_QUIET;
 331
 332     /* Debug message from libdvdcss selected from config.h #define */
 333 #ifdef TRACE_DVDCSS
 334     i_flags |= DVDCSS_INIT_DEBUG;
 335 #endif
 336
 337     /* XXX: put this shit in an access plugin */
 338     if( strlen( p_input->p_source ) > 4
 339          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 340     {
 341         dvdhandle = dvdcss_open( p_input->p_source + 4, i_flags );
 342     }
 343     else
 344     {
 345         dvdhandle = dvdcss_open( p_input->p_source, i_flags );
 346     }
 347
 348     if( dvdhandle == NULL )
 349     {
 350         intf_ErrMsg( "dvd error: dvdcss can't open device" );
 351         p_input->b_error = 1;
 352         return;
 353     }
 354
 355     p_input->i_handle = (int) dvdhandle;
 356 }
 357
 358 /*****************************************************************************
 359  * DVDClose: close dvd
 360  *****************************************************************************/
 361 static void DVDClose( struct input_thread_s *p_input )
 362 {
 363     /* Clean up libdvdcss */
 364     dvdcss_close( (dvdcss_handle) p_input->i_handle );
 365 }
 366
 367 /*****************************************************************************
 368  * DVDEnd: frees unused data
 369  *****************************************************************************/
 370 static void DVDEnd( input_thread_t * p_input )
 371 {
 372     thread_dvd_data_t *     p_dvd;
 373     dvd_netlist_t *         p_netlist;
 374
 375     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 376     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 377
 378     IfoDestroy( p_dvd->p_ifo );
 379
 380     free( p_dvd );
 381
 382     DVDNetlistEnd( p_netlist );
 383 }
 384
 385 /*****************************************************************************
 386  * DVDSetArea: initialize input data for title x, chapter y.
 387  * It should be called for each user navigation request.
 388  *****************************************************************************
 389  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 390  * Note that you have to take the lock before entering here.
 391  *****************************************************************************/
 392 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 393 {
 394     thread_dvd_data_t *  p_dvd;
 395     es_descriptor_t *    p_es;
 396     u16                  i_id;
 397     int                  i_vts_title;
 398     int                  i_audio_nb = 0;
 399     int                  i_spu_nb = 0;
 400     int                  i_audio;
 401     int                  i_spu;
 402     int                  i;
 403
 404     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 405
 406     /* we can't use the interface slider until initilization is complete */
 407     p_input->stream.b_seekable = 0;
 408
 409     if( p_area != p_input->stream.p_selected_area )
 410     {
 411         /* Reset the Chapter position of the old title */
 412         p_input->stream.p_selected_area->i_part = 0;
 413
 414         /*
 415          *  We have to load all title information
 416          */
 417         /* Change the default area */
 418         p_input->stream.p_selected_area =
 419                     p_input->stream.pp_areas[p_area->i_id];
 420
 421         /* title number: it is not vts nb!,
 422          * it is what appears in the interface list */
 423         p_dvd->i_title = p_area->i_id;
 424         p_dvd->p_ifo->i_title = p_dvd->i_title;
 425
 426         /* set number of chapters of current title */
 427         p_dvd->i_chapter_nb = p_area->i_part_nb;
 428
 429         /* ifo vts */
 430         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 431         {
 432             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 433             free( p_dvd );
 434             p_input->b_error = 1;
 435             return -1;
 436         }
 437
 438 #define vmg p_dvd->p_ifo->vmg
 439 #define vts p_dvd->p_ifo->vts
 440         /* title position inside the selected vts */
 441         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 442         p_dvd->i_title_id =
 443             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 444
 445         intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
 446                          p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
 447
 448
 449         /*
 450          * Angle management
 451          */
 452         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 453         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 454         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 455         {
 456             p_dvd->i_angle = 1;
 457         }
 458
 459         /*
 460          * Set selected title start and size
 461          */
 462
 463         /* title set offset XXX: convert to block values */
 464         p_dvd->i_title_start =
 465             vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
 466
 467         /* last video cell */
 468         p_dvd->i_cell = 0;
 469         p_dvd->i_prg_cell = -1 +
 470             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 471
 472         if( DVDFindCell( p_dvd ) < 0 )
 473         {
 474             intf_ErrMsg( "dvd error: can't find title end" );
 475             p_input->b_error = 1;
 476             return -1;
 477         }
 478
 479         /* temporary hack to fix size in some dvds */
 480         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 481         {
 482             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 483         }
 484
 485         p_dvd->i_sector = 0;
 486         p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
 487
 488         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 489         {
 490             intf_ErrMsg( "dvd error: can't find first chapter" );
 491             p_input->b_error = 1;
 492             return -1;
 493         }
 494
 495         /*
 496          * Force libdvdcss to check its title key.
 497          * It is only useful for title cracking method. Methods using the decrypted
 498          * disc key are fast enough to check the key at each seek
 499          */
 500         if( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start, DVDCSS_SEEK_INI ) < 0 )
 501         {
 502             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 503             return -1;
 504         }
 505
 506         p_dvd->i_size -= p_dvd->i_sector + 1;
 507
 508         IfoPrintTitle( p_dvd );
 509
 510         /* Area definition */
 511         p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
 512         p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
 513         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 514         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 515
 516 #if 0
 517         /* start at the beginning of the title */
 518         /* FIXME: create a conf option to select whether to restart
 519          * title or not */
 520         p_input->stream.p_selected_area->i_tell = 0;
 521         p_input->stream.p_selected_area->i_part = 1;
 522 #endif
 523
 524         /*
 525          * Destroy obsolete ES by reinitializing program 0
 526          * and find all ES in title with ifo data
 527          */
 528         if( p_input->stream.pp_programs != NULL )
 529         {
 530             /* We don't use input_EndStream here since
 531              * we keep area structures */
 532
 533             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 534             {
 535                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 536             }
 537
 538             free( p_input->stream.pp_selected_es );
 539             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 540
 541             p_input->stream.pp_selected_es = NULL;
 542             p_input->stream.i_selected_es_number = 0;
 543         }
 544
 545         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 546
 547         /* No PSM to read in DVD mode, we already have all information */
 548         p_input->stream.pp_programs[0]->b_is_ok = 1;
 549
 550         p_es = NULL;
 551
 552         /* ES 0 -> video MPEG2 */
 553         IfoPrintVideo( p_dvd );
 554
 555         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 556         p_es->i_stream_id = 0xe0;
 557         p_es->i_type = MPEG2_VIDEO_ES;
 558         p_es->i_cat = VIDEO_ES;
 559         if( p_main->b_video )
 560         {
 561             input_SelectES( p_input, p_es );
 562         }
 563
 564 #define audio_status \
 565     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 566         /* Audio ES, in the order they appear in .ifo */
 567         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 568         {
 569             IfoPrintAudio( p_dvd, i );
 570
 571             /* audio channel is active if first byte is 0x80 */
 572             if( audio_status.i_available )
 573             {
 574                 i_audio_nb++;
 575
 576                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 577                 {
 578                 case 0x00:              /* AC3 */
 579                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 580                     p_es = input_AddES( p_input,
 581                                p_input->stream.pp_programs[0], i_id, 0 );
 582                     p_es->i_stream_id = 0xbd;
 583                     p_es->i_type = AC3_AUDIO_ES;
 584                     p_es->b_audio = 1;
 585                     p_es->i_cat = AUDIO_ES;
 586                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 587                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 588                     strcat( p_es->psz_desc, " (ac3)" );
 589
 590                     break;
 591                 case 0x02:
 592                 case 0x03:              /* MPEG audio */
 593                     i_id = 0xc0 + audio_status.i_position;
 594                     p_es = input_AddES( p_input,
 595                                     p_input->stream.pp_programs[0], i_id, 0 );
 596                     p_es->i_stream_id = i_id;
 597                     p_es->i_type = MPEG2_AUDIO_ES;
 598                     p_es->b_audio = 1;
 599                     p_es->i_cat = AUDIO_ES;
 600                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 601                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 602                     strcat( p_es->psz_desc, " (mpeg)" );
 603
 604                     break;
 605                 case 0x04:              /* LPCM */
 606
 607                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 608                     p_es = input_AddES( p_input,
 609                                     p_input->stream.pp_programs[0], i_id, 0 );
 610                     p_es->i_stream_id = i_id;
 611                     p_es->i_type = LPCM_AUDIO_ES;
 612                     p_es->b_audio = 1;
 613                     p_es->i_cat = AUDIO_ES;
 614                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 615                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 616                     strcat( p_es->psz_desc, " (lpcm)" );
 617
 618                     break;
 619                 case 0x06:              /* DTS */
 620                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 621                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 622                                  "(0x%x)", i_id );
 623                     break;
 624                 default:
 625                     i_id = 0;
 626                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 627                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 628                 }
 629             }
 630         }
 631 #undef audio_status
 632 #define spu_status \
 633     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 634
 635         /* Sub Picture ES */
 636
 637         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 638         {
 639             IfoPrintSpu( p_dvd, i );
 640
 641             if( spu_status.i_available )
 642             {
 643                 i_spu_nb++;
 644
 645                 /*  there are several streams for one spu */
 646                 if(  vts.manager_inf.video_attr.i_ratio )
 647                 {
 648                     /* 16:9 */
 649                     switch( vts.manager_inf.video_attr.i_perm_displ )
 650                     {
 651                     case 1:
 652                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 653                                | 0xbd;
 654                         break;
 655                     case 2:
 656                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 657                                | 0xbd;
 658                         break;
 659                     default:
 660                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 661                                | 0xbd;
 662                         break;
 663                     }
 664                 }
 665                 else
 666                 {
 667                     /* 4:3 */
 668                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 669                            | 0xbd;
 670                 }
 671                 p_es = input_AddES( p_input,
 672                                     p_input->stream.pp_programs[0], i_id, 0 );
 673                 p_es->i_stream_id = 0xbd;
 674                 p_es->i_type = DVD_SPU_ES;
 675                 p_es->i_cat = SPU_ES;
 676                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 677                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 678             }
 679         }
 680 #undef spu_status
 681         if( p_main->b_audio )
 682         {
 683             /* For audio: first one if none or a not existing one specified */
 684             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 685             if( i_audio < 0 || i_audio > i_audio_nb )
 686             {
 687                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 688                 i_audio = 1;
 689             }
 690             if( i_audio > 0 && i_audio_nb > 0 )
 691             {
 692                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 693                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 694                       REQUESTED_AC3 ) )
 695                 {
 696                     int     i_ac3 = i_audio;
 697                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 698                              AC3_AUDIO_ES ) && ( i_ac3 <=
 699                              vts.manager_inf.i_audio_nb ) )
 700                     {
 701                         i_ac3++;
 702                     }
 703                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 704                     {
 705                         input_SelectES( p_input,
 706                                         p_input->stream.pp_es[i_ac3] );
 707                     }
 708                 }
 709                 else
 710                 {
 711                     input_SelectES( p_input,
 712                                     p_input->stream.pp_es[i_audio] );
 713                 }
 714             }
 715         }
 716
 717         if( p_main->b_video )
 718         {
 719             /* for spu, default is none */
 720             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 721             if( i_spu < 0 || i_spu > i_spu_nb )
 722             {
 723                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 724                 i_spu = 0;
 725             }
 726             if( i_spu > 0 && i_spu_nb > 0 )
 727             {
 728                 i_spu += vts.manager_inf.i_audio_nb;
 729                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 730             }
 731         }
 732     } /* i_title >= 0 */
 733     else
 734     {
 735         p_area = p_input->stream.p_selected_area;
 736     }
 737 #undef vts
 738 #undef vmg
 739
 740     /*
 741      * Chapter selection
 742      */
 743
 744     if( p_area->i_part != p_dvd->i_chapter )
 745     {
 746         if( ( p_area->i_part > 0 ) &&
 747             ( p_area->i_part <= p_area->i_part_nb ))
 748         {
 749             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 750             {
 751                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 752                 p_input->b_error = 1;
 753                 return -1;
 754             }
 755
 756             p_input->stream.p_selected_area->i_tell =
 757                                    LB2OFF( p_dvd->i_start ) - p_area->i_start;
 758             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 759
 760             intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
 761                                         p_area->i_part, p_area->i_tell );
 762         }
 763         else
 764         {
 765             p_area->i_part = 1;
 766             p_dvd->i_chapter = 1;
 767         }
 768     }
 769
 770 #define title \
 771     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 772     if( p_area->i_angle != p_dvd->i_angle )
 773     {
 774         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 775         {
 776             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 777             {
 778                 p_dvd->i_cell = 0;
 779             }
 780             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 781             p_dvd->i_angle = p_area->i_angle;
 782
 783             DVDFindSector( p_dvd );
 784             p_dvd->i_cell += p_dvd->i_angle_cell;
 785         }
 786         else
 787         {
 788             p_dvd->i_angle = p_area->i_angle;
 789         }
 790
 791         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 792     }
 793
 794     /* warn interface that something has changed */
 795     p_input->stream.b_seekable = 1;
 796     p_input->stream.b_changed = 1;
 797
 798     return 0;
 799 }
 800
 801
 802 /*****************************************************************************
 803  * DVDRead: reads data packets into the netlist.
 804  *****************************************************************************
 805  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 806  * EOF.
 807  *****************************************************************************/
 808 static int DVDRead( input_thread_t * p_input,
 809                     data_packet_t ** pp_packets )
 810 {
 811     thread_dvd_data_t *     p_dvd;
 812     dvd_netlist_t *         p_netlist;
 813     struct iovec *          p_vec;
 814     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 815     u8 *                    pi_cur;
 816     int                     i_block_once;
 817     int                     i_packet_size;
 818     int                     i_iovec;
 819     int                     i_packet;
 820     int                     i_pos;
 821     int                     i_read_blocks;
 822     int                     i_sector;
 823     boolean_t               b_eof;
 824     boolean_t               b_eot;
 825     boolean_t               b_eoc;
 826
 827     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 828     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 829
 830     b_eoc = 0;
 831     i_sector = p_dvd->i_title_start + p_dvd->i_sector;
 832     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 833
 834
 835     /* Get the position of the next cell if we're at cell end */
 836     if( i_block_once <= 0 )
 837     {
 838         int     i_angle;
 839
 840         p_dvd->i_cell++;
 841         p_dvd->i_angle_cell++;
 842
 843         /* Find cell index in adress map */
 844         if( DVDFindSector( p_dvd ) < 0 )
 845         {
 846             pp_packets[0] = NULL;
 847             intf_ErrMsg( "dvd error: can't find next cell" );
 848             return 1;
 849         }
 850
 851         /* Position the fd pointer on the right address */
 852         if( ( i_sector = dvdcss_seek( p_dvd->dvdhandle,
 853                                       p_dvd->i_title_start + p_dvd->i_sector,
 854                                       DVDCSS_SEEK_MPEG ) ) < 0 )
 855         {
 856             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 857             return -1;
 858         }
 859
 860         /* update chapter : it will be easier when we have navigation
 861          * ES support */
 862         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 863         {
 864             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 865             {
 866                 i_angle = p_dvd->i_angle - 1;
 867             }
 868             else
 869             {
 870                 i_angle = 0;
 871             }
 872             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 873                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 874             {
 875                 p_dvd->i_chapter++;
 876                 b_eoc = 1;
 877             }
 878         }
 879
 880         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 881     }
 882
 883     /* The number of blocks read is the max between the requested
 884      * value and the leaving block in the cell */
 885     if( i_block_once > p_dvd->i_block_once )
 886     {
 887         i_block_once = p_dvd->i_block_once;
 888     }
 889 /*
 890 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 891 */
 892     p_netlist->i_read_once = i_block_once;
 893
 894     /* Get an iovec pointer */
 895     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 896     {
 897         intf_ErrMsg( "dvd error: can't get iovec" );
 898         return -1;
 899     }
 900
 901     /* Reads from DVD */
 902     i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
 903                                   i_block_once, DVDCSS_READ_DECRYPT );
 904
 905     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 906      * need know the real number of blocks read */
 907     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 908
 909     /* Update global position */
 910     p_dvd->i_sector += i_read_blocks;
 911
 912     i_packet = 0;
 913
 914     /* Read headers to compute payload length */
 915     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 916     {
 917         i_pos = 0;
 918
 919         while( i_pos < p_netlist->i_buffer_size )
 920         {
 921             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 922
 923             /*default header */
 924             if( U32_AT( pi_cur ) != 0x1BA )
 925             {
 926                 /* That's the case for all packets, except pack header. */
 927                 i_packet_size = U16_AT( pi_cur + 4 );
 928                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 929             }
 930             else
 931             {
 932                 /* MPEG-2 Pack header. */
 933                 i_packet_size = 8;
 934                 pp_packets[i_packet] = pp_data[i_iovec];
 935
 936             }
 937
 938             (*pp_data[i_iovec]->pi_refcount)++;
 939
 940             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 941
 942             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 943
 944             pp_packets[i_packet]->p_payload_start =
 945                     pp_packets[i_packet]->p_buffer + i_pos;
 946
 947             pp_packets[i_packet]->p_payload_end =
 948                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 949
 950             pp_packets[i_packet]->p_next = NULL;
 951             pp_packets[i_packet]->b_discard_payload = 0;
 952
 953             i_packet++;
 954             i_pos += i_packet_size + 6;
 955         }
 956     }
 957
 958     pp_packets[i_packet] = NULL;
 959
 960     vlc_mutex_lock( &p_input->stream.stream_lock );
 961
 962     p_input->stream.p_selected_area->i_tell =
 963         LB2OFF( i_sector + i_read_blocks ) -
 964         p_input->stream.p_selected_area->i_start;
 965     if( b_eoc )
 966     {
 967         /* We modify i_part only at end of chapter not to erase
 968          * some modification from the interface */
 969         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 970     }
 971
 972     b_eot = !( p_input->stream.p_selected_area->i_tell
 973                   < p_input->stream.p_selected_area->i_size );
 974     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 975
 976     if( b_eof )
 977     {
 978         vlc_mutex_unlock( &p_input->stream.stream_lock );
 979         return 1;
 980     }
 981
 982     if( b_eot )
 983     {
 984         intf_WarnMsg( 4, "dvd info: new title" );
 985         p_dvd->i_title++;
 986         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 987         vlc_mutex_unlock( &p_input->stream.stream_lock );
 988         return 0;
 989     }
 990
 991     vlc_mutex_unlock( &p_input->stream.stream_lock );
 992
 993     if( i_read_blocks == i_block_once )
 994     {
 995         return 0;
 996     }
 997
 998     return -1;
 999 }
1000
1001 /*****************************************************************************
1002  * DVDRewind : reads a stream backward
1003  *****************************************************************************/
1004 static int DVDRewind( input_thread_t * p_input )
1005 {
1006     return( -1 );
1007 }
1008
1009 /*****************************************************************************
1010  * DVDSeek : Goes to a given position on the stream.
1011  *****************************************************************************
1012  * This one is used by the input and translate chronological position from
1013  * input to logical position on the device.
1014  * The lock should be taken before calling this function.
1015  *****************************************************************************/
1016 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1017 {
1018     thread_dvd_data_t *     p_dvd;
1019     int                     i_block;
1020     int                     i_prg_cell;
1021     int                     i_cell;
1022     int                     i_chapter;
1023     int                     i_angle;
1024
1025     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1026
1027     /* we have to take care of offset of beginning of title */
1028     p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
1029                        - p_dvd->i_title_start;
1030
1031     i_prg_cell = 0;
1032     i_chapter = 0;
1033
1034     /* parse vobu address map to find program cell */
1035     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1036     {
1037         i_prg_cell++;
1038     }
1039
1040     p_dvd->i_prg_cell = i_prg_cell;
1041
1042     if( DVDChooseAngle( p_dvd ) < 0 )
1043     {
1044         p_input->b_error = 1;
1045         return;
1046     }
1047
1048     p_dvd->i_cell = 0;
1049
1050     /* Find first title cell which is inside program cell */
1051     if( DVDFindCell( p_dvd ) < 0 )
1052     {
1053         /* no following cell : we're at eof */
1054         intf_ErrMsg( "dvd error: cell seeking failed" );
1055         p_input->b_error = 1;
1056         return;
1057     }
1058
1059     i_cell = p_dvd->i_cell;
1060
1061 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1062     /* parse cell address map to find title cell containing sector */
1063     while( cell.i_end_sector < p_dvd->i_sector )
1064     {
1065         i_cell++;
1066     }
1067
1068     p_dvd->i_cell = i_cell;
1069
1070     /* if we're inside a multi-angle zone, we have to choose i_sector
1071      * in the current angle ; we can't do it all the time since cells
1072      * can be very wide out of such zones */
1073     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1074     {
1075         p_dvd->i_sector = MAX(
1076                 cell.i_start_sector,
1077                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1078     }
1079
1080     p_dvd->i_end_sector = MIN(
1081             cell.i_end_sector,
1082             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1083 #undef cell
1084     /* update chapter */
1085     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1086     {
1087         i_angle = p_dvd->i_angle - 1;
1088     }
1089     else
1090     {
1091         i_angle = 0;
1092     }
1093     if( p_dvd->i_chapter_nb > 1 )
1094     {
1095         while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1096                     ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1097                ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1098         {
1099             i_chapter++;
1100         }
1101     }
1102     else
1103     {
1104         i_chapter = 1;
1105     }
1106
1107     p_dvd->i_chapter = i_chapter;
1108     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1109
1110     if( ( i_block = dvdcss_seek( p_dvd->dvdhandle,
1111                                  p_dvd->i_title_start + p_dvd->i_sector,
1112                                  DVDCSS_SEEK_MPEG ) ) < 0 )
1113     {
1114         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1115         p_input->b_error = 1;
1116         return;
1117     }
1118
1119     p_input->stream.p_selected_area->i_tell =
1120         LB2OFF ( i_block ) - p_input->stream.p_selected_area->i_start;
1121
1122     intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1123                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1124
1125
1126     return;
1127 }
1128
1129 #define cell  p_dvd->p_ifo->vts.cell_inf
1130
1131 /*****************************************************************************
1132  * DVDFindCell: adjust the title cell index with the program cell
1133  *****************************************************************************/
1134 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1135 {
1136     int                 i_cell;
1137     int                 i_index;
1138
1139     i_cell = p_dvd->i_cell;
1140     i_index = p_dvd->i_prg_cell;
1141
1142     if( i_cell >= cell.i_cell_nb )
1143     {
1144         return -1;
1145     }
1146
1147     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1148                    cell.p_cell_map[i_cell].i_vob_id ) ||
1149       ( title.p_cell_pos[i_index].i_cell_id !=
1150                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1151            ( i_cell < cell.i_cell_nb - 1 ) )
1152     {
1153         i_cell++;
1154     }
1155
1156 /*
1157 intf_WarnMsg( 12, "FindCell: i_cell %d i_index %d found %d nb %d",
1158                     p_dvd->i_cell,
1159                     p_dvd->i_prg_cell,
1160                     i_cell,
1161                     cell.i_cell_nb );
1162 */
1163
1164     p_dvd->i_cell = i_cell;
1165
1166     return 0;
1167 }
1168
1169 #undef cell
1170
1171 /*****************************************************************************
1172  * DVDFindSector: find cell index in adress map from index in
1173  * information table program map and give corresponding sectors.
1174  *****************************************************************************/
1175 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1176 {
1177
1178     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1179     {
1180         p_dvd->i_prg_cell++;
1181
1182         if( DVDChooseAngle( p_dvd ) < 0 )
1183         {
1184             return -1;
1185         }
1186     }
1187
1188     if( DVDFindCell( p_dvd ) < 0 )
1189     {
1190         intf_ErrMsg( "dvd error: can't find sector" );
1191         return -1;
1192     }
1193
1194     /* Find start and end sectors of new cell */
1195 #if 1
1196     p_dvd->i_sector = MAX(
1197          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1198          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1199     p_dvd->i_end_sector = MIN(
1200          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1201          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1202 #else
1203     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1204     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1205 #endif
1206
1207 /*
1208     intf_WarnMsg( 12, "cell: %d sector1: 0x%x end1: 0x%x\n"
1209                    "index: %d sector2: 0x%x end2: 0x%x\n"
1210                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1211         p_dvd->i_cell,
1212         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1213         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1214         p_dvd->i_prg_cell,
1215         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1216         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1217         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1218         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1219         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1220 */
1221
1222     return 0;
1223 }
1224
1225 /*****************************************************************************
1226  * DVDChapterSelect: find the cell corresponding to requested chapter
1227  *****************************************************************************/
1228 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1229 {
1230
1231     /* Find cell index in Program chain for current chapter */
1232     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1233     p_dvd->i_cell = 0;
1234     p_dvd->i_sector = 0;
1235
1236     DVDChooseAngle( p_dvd );
1237
1238     /* Search for cell_index in cell adress_table and initialize
1239      * start sector */
1240     if( DVDFindSector( p_dvd ) < 0 )
1241     {
1242         intf_ErrMsg( "dvd error: can't select chapter" );
1243         return -1;
1244     }
1245
1246     /* start is : beginning of vts vobs + offset to vob x */
1247     p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1248
1249     /* Position the fd pointer on the right address */
1250     if( ( p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle,
1251                                         p_dvd->i_start,
1252                                         DVDCSS_SEEK_MPEG ) ) < 0 )
1253     {
1254         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1255         return -1;
1256     }
1257
1258     p_dvd->i_chapter = i_chapter;
1259     return 0;
1260 }
1261
1262 /*****************************************************************************
1263  * DVDChooseAngle: select the cell corresponding to the selected angle
1264  *****************************************************************************/
1265 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1266 {
1267     /* basic handling of angles */
1268     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1269                     >> 12 ) )
1270     {
1271         /* we enter a muli-angle section */
1272         case 0x5:
1273             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1274             p_dvd->i_angle_cell = 0;
1275             break;
1276         /* we exit a multi-angle section */
1277         case 0x9:
1278         case 0xd:
1279             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1280             break;
1281     }
1282
1283     return 0;
1284 }
1285
1286 #undef title