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

   1 /*****************************************************************************
   2  * input_dvd.c: DVD raw reading plugin.
   3  *****************************************************************************
   4  * This plugins should handle all the known specificities of the DVD format,
   5  * especially the 2048 bytes logical block size.
   6  * It depends on:
   7  *  -input_netlist used to read packets
   8  *  -dvd_ifo for ifo parsing and analyse
   9  *  -dvd_css for unscrambling
  10  *  -dvd_udf to find files
  11  *****************************************************************************
  12  * Copyright (C) 1998-2001 VideoLAN
  13  * $Id: input_dvd.c,v 1.55 2001/05/06 18:32:30 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 /*****************************************************************************
  33  * Preamble
  34  *****************************************************************************/
  35 #include "defs.h"
  36
  37 #ifdef HAVE_CSS
  38 #define MODULE_NAME dvd
  39 #else /* HAVE_CSS */
  40 #define MODULE_NAME dvdnocss
  41 #endif /* HAVE_CSS */
  42 #include "modules_inner.h"
  43
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <unistd.h>
  47 #include <netinet/in.h>
  48
  49 #include <fcntl.h>
  50 #include <sys/types.h>
  51 #include <sys/uio.h>
  52
  53 #include <string.h>
  54 #ifdef STRNCASECMP_IN_STRINGS_H
  55 #   include <strings.h>
  56 #endif
  57 #include <errno.h>
  58
  59 #include "config.h"
  60 #include "common.h"
  61 #include "threads.h"
  62 #include "mtime.h"
  63 #include "tests.h"
  64
  65 #include "intf_msg.h"
  66
  67 #include "main.h"
  68
  69 #include "stream_control.h"
  70 #include "input_ext-intf.h"
  71 #include "input_ext-dec.h"
  72
  73 #include "input.h"
  74
  75 #include "dvd_netlist.h"
  76 #include "dvd_ifo.h"
  77 #include "dvd_css.h"
  78 #include "input_dvd.h"
  79 #include "mpeg_system.h"
  80
  81 #include "debug.h"
  82
  83 #include "modules.h"
  84
  85 /*****************************************************************************
  86  * Local tables
  87  *****************************************************************************/
  88 static struct
  89 {
  90     char    p_code[3];
  91     char    p_lang_long[20];
  92 }
  93
  94 lang_tbl[] =
  95 {
  96     /* The ISO 639 language codes.
  97      * Language names with * prefix are not spelled in their own language
  98      */
  99     { "  ", "Not Specified" },
 100     { "aa", "*Afar" },
 101     { "ab", "*Abkhazian" },
 102     { "af", "*Afrikaans" },
 103     { "am", "*Amharic" },
 104     { "ar", "*Arabic" },
 105     { "as", "*Assamese" },
 106     { "ay", "*Aymara" },
 107     { "az", "*Azerbaijani" },
 108     { "ba", "*Bashkir" },
 109     { "be", "*Byelorussian" },
 110     { "bg", "*Bulgarian" },
 111     { "bh", "*Bihari" },
 112     { "bi", "*Bislama" },
 113     { "bn", "*Bengali; Bangla" },
 114     { "bo", "*Tibetan" },
 115     { "br", "*Breton" },
 116     { "ca", "*Catalan" },
 117     { "co", "*Corsican" },
 118     { "cs", "*Czech(Ceske)" },
 119     { "cy", "*Welsh" },
 120     { "da", "Dansk" },
 121     { "de", "Deutsch" },
 122     { "dz", "*Bhutani" },
 123     { "el", "*Greek" },
 124     { "en", "English" },
 125     { "eo", "*Esperanto" },
 126     { "es", "Espanol" },
 127     { "et", "*Estonian" },
 128     { "eu", "*Basque" },
 129     { "fa", "*Persian" },
 130     { "fi", "Suomi" },
 131     { "fj", "*Fiji" },
 132     { "fo", "*Faroese" },
 133     { "fr", "Francais" },
 134     { "fy", "*Frisian" },
 135     { "ga", "*Irish" },
 136     { "gd", "*Scots Gaelic" },
 137     { "gl", "*Galician" },
 138     { "gn", "*Guarani" },
 139     { "gu", "*Gujarati" },
 140     { "ha", "*Hausa" },
 141     { "he", "*Hebrew" },                                      /* formerly iw */
 142     { "hi", "*Hindi" },
 143     { "hr", "Hrvatski" },                                        /* Croatian */
 144     { "hu", "Magyar" },
 145     { "hy", "*Armenian" },
 146     { "ia", "*Interlingua" },
 147     { "id", "*Indonesian" },                                  /* formerly in */
 148     { "ie", "*Interlingue" },
 149     { "ik", "*Inupiak" },
 150     { "in", "*Indonesian" },                               /* replaced by id */
 151     { "is", "Islenska" },
 152     { "it", "Italiano" },
 153     { "iu", "*Inuktitut" },
 154     { "iw", "*Hebrew" },                                   /* replaced by he */
 155     { "ja", "*Japanese" },
 156     { "ji", "*Yiddish" },                                  /* replaced by yi */
 157     { "jw", "*Javanese" },
 158     { "ka", "*Georgian" },
 159     { "kk", "*Kazakh" },
 160     { "kl", "*Greenlandic" },
 161     { "km", "*Cambodian" },
 162     { "kn", "*Kannada" },
 163     { "ko", "*Korean" },
 164     { "ks", "*Kashmiri" },
 165     { "ku", "*Kurdish" },
 166     { "ky", "*Kirghiz" },
 167     { "la", "*Latin" },
 168     { "ln", "*Lingala" },
 169     { "lo", "*Laothian" },
 170     { "lt", "*Lithuanian" },
 171     { "lv", "*Latvian, Lettish" },
 172     { "mg", "*Malagasy" },
 173     { "mi", "*Maori" },
 174     { "mk", "*Macedonian" },
 175     { "ml", "*Malayalam" },
 176     { "mn", "*Mongolian" },
 177     { "mo", "*Moldavian" },
 178     { "mr", "*Marathi" },
 179     { "ms", "*Malay" },
 180     { "mt", "*Maltese" },
 181     { "my", "*Burmese" },
 182     { "na", "*Nauru" },
 183     { "ne", "*Nepali" },
 184     { "nl", "Nederlands" },
 185     { "no", "Norsk" },
 186     { "oc", "*Occitan" },
 187     { "om", "*(Afan) Oromo" },
 188     { "or", "*Oriya" },
 189     { "pa", "*Punjabi" },
 190     { "pl", "*Polish" },
 191     { "ps", "*Pashto, Pushto" },
 192     { "pt", "Portugues" },
 193     { "qu", "*Quechua" },
 194     { "rm", "*Rhaeto-Romance" },
 195     { "rn", "*Kirundi" },
 196     { "ro", "*Romanian"  },
 197     { "ru", "*Russian" },
 198     { "rw", "*Kinyarwanda" },
 199     { "sa", "*Sanskrit" },
 200     { "sd", "*Sindhi" },
 201     { "sg", "*Sangho" },
 202     { "sh", "*Serbo-Croatian" },
 203     { "si", "*Sinhalese" },
 204     { "sk", "*Slovak" },
 205     { "sl", "*Slovenian" },
 206     { "sm", "*Samoan" },
 207     { "sn", "*Shona"  },
 208     { "so", "*Somali" },
 209     { "sq", "*Albanian" },
 210     { "sr", "*Serbian" },
 211     { "ss", "*Siswati" },
 212     { "st", "*Sesotho" },
 213     { "su", "*Sundanese" },
 214     { "sv", "Svenska" },
 215     { "sw", "*Swahili" },
 216     { "ta", "*Tamil" },
 217     { "te", "*Telugu" },
 218     { "tg", "*Tajik" },
 219     { "th", "*Thai" },
 220     { "ti", "*Tigrinya" },
 221     { "tk", "*Turkmen" },
 222     { "tl", "*Tagalog" },
 223     { "tn", "*Setswana" },
 224     { "to", "*Tonga" },
 225     { "tr", "*Turkish" },
 226     { "ts", "*Tsonga" },
 227     { "tt", "*Tatar" },
 228     { "tw", "*Twi" },
 229     { "ug", "*Uighur" },
 230     { "uk", "*Ukrainian" },
 231     { "ur", "*Urdu" },
 232     { "uz", "*Uzbek" },
 233     { "vi", "*Vietnamese" },
 234     { "vo", "*Volapuk" },
 235     { "wo", "*Wolof" },
 236     { "xh", "*Xhosa" },
 237     { "yi", "*Yiddish" },                                     /* formerly ji */
 238     { "yo", "*Yoruba" },
 239     { "za", "*Zhuang" },
 240     { "zh", "*Chinese" },
 241     { "zu", "*Zulu" },
 242     { "\0", "" }
 243 };
 244
 245 /*****************************************************************************
 246  * Local prototypes
 247  *****************************************************************************/
 248 /* called from outside */
 249 static int  DVDProbe    ( probedata_t *p_data );
 250 static void DVDInit     ( struct input_thread_s * );
 251 static void DVDEnd      ( struct input_thread_s * );
 252 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 253 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 254 static void DVDSeek     ( struct input_thread_s *, off_t );
 255 static int  DVDRewind   ( struct input_thread_s * );
 256
 257 /* called only inside */
 258 static char * Language( u16 );
 259 static int  DVDChooseAngle( thread_dvd_data_t * );
 260 static int  DVDFindCell( thread_dvd_data_t * );
 261 static int  DVDFindSector( thread_dvd_data_t * );
 262 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 263
 264 /*****************************************************************************
 265  * Functions exported as capabilities. They are declared as static so that
 266  * we don't pollute the namespace too much.
 267  *****************************************************************************/
 268 void _M( input_getfunctions )( function_list_t * p_function_list )
 269 {
 270 #define input p_function_list->functions.input
 271     p_function_list->pf_probe = DVDProbe;
 272     input.pf_init             = DVDInit;
 273     input.pf_open             = input_FileOpen;
 274     input.pf_close            = input_FileClose;
 275     input.pf_end              = DVDEnd;
 276     input.pf_read             = DVDRead;
 277     input.pf_set_area         = DVDSetArea;
 278     input.pf_demux            = input_DemuxPS;
 279     input.pf_new_packet       = DVDNewPacket;
 280     input.pf_new_pes          = DVDNewPES;
 281     input.pf_delete_packet    = DVDDeletePacket;
 282     input.pf_delete_pes       = DVDDeletePES;
 283     input.pf_rewind           = DVDRewind;
 284     input.pf_seek             = DVDSeek;
 285 #undef input
 286 }
 287
 288 /*
 289  * Local tools to decode some data in ifo
 290  */
 291
 292 /*****************************************************************************
 293  * Language: gives the long language name from the two-letters ISO-639 code
 294  *****************************************************************************/
 295 static char * Language( u16 i_code )
 296 {
 297     int     i = 0;
 298
 299     while( memcmp( lang_tbl[i].p_code, &i_code, 2 ) &&
 300            lang_tbl[i].p_lang_long[0] )
 301     {
 302         i++;
 303     }
 304
 305     return lang_tbl[i].p_lang_long;
 306 }
 307
 308 /*
 309  * Data reading functions
 310  */
 311
 312 /*****************************************************************************
 313  * DVDProbe: verifies that the stream is a PS stream
 314  *****************************************************************************/
 315 static int DVDProbe( probedata_t *p_data )
 316 {
 317     input_thread_t * p_input = (input_thread_t *)p_data;
 318
 319     char * psz_name = p_input->p_source;
 320     int i_handle;
 321     int i_score = 5;
 322
 323     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 324     {
 325 #ifdef HAVE_CSS
 326         return( 999 );
 327 #else /* HAVE_CSS */
 328         return( 998 );
 329 #endif /* HAVE_CSS */
 330     }
 331
 332     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 333     {
 334         /* If the user specified "dvd:" then it's probably a DVD */
 335 #ifdef HAVE_CSS
 336         i_score = 100;
 337 #else /* HAVE_CSS */
 338         i_score = 90;
 339 #endif /* HAVE_CSS */
 340         psz_name += 4;
 341     }
 342
 343     i_handle = open( psz_name, 0 );
 344     if( i_handle == -1 )
 345     {
 346         return( 0 );
 347     }
 348     close( i_handle );
 349
 350     return( i_score );
 351 }
 352
 353 /*****************************************************************************
 354  * DVDInit: initializes DVD structures
 355  *****************************************************************************/
 356 static void DVDInit( input_thread_t * p_input )
 357 {
 358     thread_dvd_data_t *  p_dvd;
 359     input_area_t *       p_area;
 360     int                  i_title;
 361     int                  i_chapter;
 362     int                  i;
 363
 364     /* I don't want DVDs to start playing immediately */
 365 //    p_input->stream.i_new_status = PAUSE_S;
 366
 367     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 368     if( p_dvd == NULL )
 369     {
 370         intf_ErrMsg( "dvd error: out of memory" );
 371         p_input->b_error = 1;
 372         return;
 373     }
 374
 375     p_input->p_plugin_data = (void *)p_dvd;
 376     p_input->p_method_data = NULL;
 377
 378     p_dvd->i_fd = p_input->i_handle;
 379
 380     /* reading several block once seems to cause lock-up
 381      * when using input_ToggleES
 382      * who wrote thez damn buggy piece of shit ??? --stef */
 383     p_dvd->i_block_once = 1;//32;
 384     p_input->i_read_once = 8;//128;
 385
 386     i = CSSTest( p_input->i_handle );
 387
 388     if( i < 0 )
 389     {
 390         free( p_dvd );
 391         p_input->b_error = 1;
 392         return;
 393     }
 394
 395     p_dvd->b_encrypted = i;
 396
 397     lseek( p_input->i_handle, 0, SEEK_SET );
 398
 399     /* Reading structures initialisation */
 400     p_input->p_method_data =
 401         DVDNetlistInit( 2048, 4096, 2048, DVD_LB_SIZE, p_dvd->i_block_once );
 402     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 403
 404     /* Ifo allocation & initialisation */
 405     if( IfoCreate( p_dvd ) < 0 )
 406     {
 407         intf_ErrMsg( "dvd error: allcation error in ifo" );
 408         p_input->b_error = 1;
 409         return;
 410     }
 411
 412     if( IfoInit( p_dvd->p_ifo ) < 0 )
 413     {
 414         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 415         free( p_dvd );
 416         p_input->b_error = 1;
 417         return;
 418     }
 419
 420     /* CSS initialisation */
 421     if( p_dvd->b_encrypted )
 422     {
 423         p_dvd->p_css = malloc( sizeof(css_t) );
 424         if( p_dvd->p_css == NULL )
 425         {
 426             intf_ErrMsg( "dvd error: couldn't create css structure" );
 427             free( p_dvd );
 428             p_input->b_error = 1;
 429             return;
 430         }
 431
 432         p_dvd->p_css->i_agid = 0;
 433
 434         if( CSSInit( p_input->i_handle, p_dvd->p_css ) < 0 )
 435         {
 436             intf_ErrMsg( "dvd error: fatal failure in css" );
 437             free( p_dvd->p_css );
 438             free( p_dvd );
 439             p_input->b_error = 1;
 440             return;
 441         }
 442
 443         intf_WarnMsg( 2, "dvd info: css initialized" );
 444     }
 445
 446     /* Set stream and area data */
 447     vlc_mutex_lock( &p_input->stream.stream_lock );
 448
 449     /* Initialize ES structures */
 450     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 451
 452     /* disc input method */
 453     p_input->stream.i_method = INPUT_METHOD_DVD;
 454
 455 #define title_inf p_dvd->p_ifo->vmg.title_inf
 456     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 457
 458 #define area p_input->stream.pp_areas
 459     /* We start from 1 here since the default area 0
 460      * is reserved for video_ts.vob */
 461     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 462     {
 463         input_AddArea( p_input );
 464
 465         /* Titles are Program Chains */
 466         area[i]->i_id = i;
 467
 468         /* Absolute start offset and size
 469          * We can only set that with vts ifo, so we do it during the
 470          * first call to DVDSetArea */
 471         area[i]->i_start = 0;
 472         area[i]->i_size = 0;
 473
 474         /* Number of chapters */
 475         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 476         area[i]->i_part = 1;
 477
 478         /* Number of angles */
 479         area[i]->i_angle_nb = 0;
 480         area[i]->i_angle = 1;
 481
 482         /* Offset to vts_i_0.ifo */
 483         area[i]->i_plugin_data = p_dvd->p_ifo->i_off +
 484                        ( title_inf.p_attr[i-1].i_start_sector * DVD_LB_SIZE );
 485     }
 486 #undef area
 487
 488     /* Get requested title - if none try the first title */
 489     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 490     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 491     {
 492         i_title = 1;
 493     }
 494
 495 #undef title_inf
 496
 497     /* Get requested chapter - if none defaults to first one */
 498     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 499     if( i_chapter <= 0 )
 500     {
 501         i_chapter = 1;
 502     }
 503
 504     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 505
 506     p_area = p_input->stream.pp_areas[i_title];
 507
 508     vlc_mutex_unlock( &p_input->stream.stream_lock );
 509
 510     /* set title, chapter, audio and subpic */
 511     DVDSetArea( p_input, p_area );
 512
 513     return;
 514 }
 515
 516 /*****************************************************************************
 517  * DVDEnd: frees unused data
 518  *****************************************************************************/
 519 static void DVDEnd( input_thread_t * p_input )
 520 {
 521     thread_dvd_data_t *     p_dvd;
 522     dvd_netlist_t *         p_netlist;
 523
 524     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 525     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 526
 527     if( p_dvd->b_encrypted )
 528     {
 529         free( p_dvd->p_css );
 530     }
 531
 532     IfoDestroy( p_dvd->p_ifo );
 533     free( p_dvd );
 534     DVDNetlistEnd( p_netlist );
 535 }
 536
 537 /*****************************************************************************
 538  * DVDSetArea: initialize input data for title x, chapter y.
 539  * It should be called for each user navigation request, and to change
 540  * audio or sub-picture streams.
 541  * ---
 542  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 543  * i_audio, i_spu start from 1 ; 0 means off.
 544  * A negative value for an argument means it does not change
 545  *****************************************************************************/
 546 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 547 {
 548     thread_dvd_data_t *  p_dvd;
 549     es_descriptor_t *    p_es;
 550     int                  i_audio;
 551     int                  i_spu;
 552     u16                  i_id;
 553     u8                   i_ac3;
 554     u8                   i_mpeg;
 555     u8                   i_lpcm;
 556     u8                   i_sub_pic;
 557     u8                   i;
 558     int                  j;
 559     boolean_t            b_last;
 560
 561     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 562
 563     vlc_mutex_lock( &p_input->stream.stream_lock );
 564
 565     if( p_area != p_input->stream.p_selected_area )
 566     {
 567
 568         /*
 569          *  We have to load all title information
 570          */
 571         /* Change the default area */
 572         p_input->stream.p_selected_area =
 573                     p_input->stream.pp_areas[p_area->i_id];
 574
 575 //        vlc_mutex_unlock( &p_input->stream.stream_lock );
 576
 577         /* title number: it is not vts nb!,
 578          * it is what appears in the interface list */
 579         p_dvd->i_title = p_area->i_id;
 580         p_dvd->p_ifo->i_title = p_dvd->i_title;
 581
 582         /* uodate title environnement variable so that we don't
 583          * loop on the same title forever */
 584         main_PutIntVariable( INPUT_TITLE_VAR, p_dvd->i_title + 1 );
 585
 586         /* ifo vts */
 587         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 588         {
 589             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 590             free( p_dvd );
 591             p_input->b_error = 1;
 592             return -1;
 593         }
 594
 595 #define vmg p_dvd->p_ifo->vmg
 596 #define vts p_dvd->p_ifo->vts
 597         /* title position inside the selected vts */
 598         p_dvd->i_vts_title =
 599                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 600         p_dvd->i_title_id =
 601           vts.title_inf.p_title_start[p_dvd->i_vts_title-1].i_title_id;
 602
 603         intf_WarnMsg( 1, "dvd: title %d vts_title %d pgc %d",
 604                         p_dvd->i_title,
 605                         p_dvd->i_vts_title,
 606                         p_dvd->i_title_id );
 607
 608         /* css title key for current vts */
 609         if( p_dvd->b_encrypted )
 610         {
 611             /* this one is vts number */
 612             p_dvd->p_css->i_title =
 613                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_set_num;
 614             p_dvd->p_css->i_title_pos =
 615                     vts.i_pos +
 616                     vts.manager_inf.i_title_vob_start_sector * DVD_LB_SIZE;
 617
 618             j = CSSGetKey( p_input->i_handle, p_dvd->p_css );
 619             if( j < 0 )
 620             {
 621                 intf_ErrMsg( "dvd error: fatal error in vts css key" );
 622                 free( p_dvd );
 623                 p_input->b_error = 1;
 624                 return -1;
 625             }
 626             else if( j > 0 )
 627             {
 628                 intf_ErrMsg( "dvd error: css decryption unavailable" );
 629                 free( p_dvd );
 630                 p_input->b_error = 1;
 631                 return -1;
 632             }
 633         }
 634
 635         /*
 636          * Angle management
 637          */
 638         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 639         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 640         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 641         {
 642             p_dvd->i_angle = 1;
 643         }
 644
 645         /*
 646          * Set selected title start and size
 647          */
 648
 649         /* title set offset */
 650         p_dvd->i_title_start = vts.i_pos + DVD_LB_SIZE *
 651                       (off_t)( vts.manager_inf.i_title_vob_start_sector );
 652
 653         /* last video cell */
 654         p_dvd->i_cell = 0;
 655         p_dvd->i_prg_cell = -1 +
 656             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 657
 658         if( DVDFindCell( p_dvd ) < 0 )
 659         {
 660             intf_ErrMsg( "dvd error: can't find title end" );
 661             p_input->b_error = 1;
 662             return -1;
 663         }
 664
 665         /* temporary hack to fix size in some dvds */
 666         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 667         {
 668             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 669         }
 670
 671
 672         p_dvd->i_sector = 0;
 673         p_dvd->i_size = DVD_LB_SIZE *
 674           (off_t)( vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 675         intf_WarnMsg( 2, "dvd info: stream size 1: %lld @ %d", p_dvd->i_size,
 676                       vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 677
 678         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 679         {
 680             intf_ErrMsg( "dvd error: can't find first chapter" );
 681             p_input->b_error = 1;
 682             return -1;
 683         }
 684
 685         p_dvd->i_size -= (off_t)( p_dvd->i_sector + 1 ) *DVD_LB_SIZE;
 686
 687         intf_WarnMsg( 2, "dvd info: title: %d", p_dvd->i_title );
 688         intf_WarnMsg( 2, "dvd info: vobstart at: %lld", p_dvd->i_start );
 689         intf_WarnMsg( 2, "dvd info: stream size: %lld", p_dvd->i_size );
 690         intf_WarnMsg( 2, "dvd info: number of chapters: %d",
 691                    vmg.title_inf.p_attr[p_dvd->i_title-1].i_chapter_nb );
 692         intf_WarnMsg( 2, "dvd info: number of angles: %d", p_dvd->i_angle_nb );
 693
 694 //        vlc_mutex_lock( &p_input->stream.stream_lock );
 695
 696         /* Area definition */
 697         p_input->stream.p_selected_area->i_start = p_dvd->i_start;
 698         p_input->stream.p_selected_area->i_size = p_dvd->i_size;
 699         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 700         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 701
 702         /*
 703          * Destroy obsolete ES by reinitializing program 0
 704          * and find all ES in title with ifo data
 705          */
 706         if( p_input->stream.pp_programs != NULL )
 707         {
 708             /* We don't use input_EndStream here since
 709              * we keep area structures */
 710
 711             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 712             {
 713                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 714             }
 715
 716             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 717
 718             p_input->stream.pp_selected_es = NULL;
 719             p_input->stream.i_selected_es_number = 0;
 720         }
 721
 722         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 723
 724         /* No PSM to read in DVD mode, we already have all information */
 725         p_input->stream.pp_programs[0]->b_is_ok = 1;
 726         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 727
 728         p_es = NULL;
 729
 730         /* ES 0 -> video MPEG2 */
 731         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 732         p_es->i_stream_id = 0xe0;
 733         p_es->i_type = MPEG2_VIDEO_ES;
 734         p_es->i_cat = VIDEO_ES;
 735         intf_WarnMsg( 1, "dvd info: video mpeg2 stream" );
 736         if( p_main->b_video )
 737         {
 738             input_SelectES( p_input, p_es );
 739         }
 740
 741         /* Audio ES, in the order they appear in .ifo */
 742
 743         i_ac3 = 0x7f;
 744         i_mpeg = 0xc0;
 745         i_lpcm = 0x9f;
 746
 747         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 748         {
 749
 750         intf_WarnMsg( 1, "Audio %d: %x %x %x %x %x %x %x %x %x %x %x %x", i,
 751             vts.manager_inf.p_audio_attr[i-1].i_num_channels,
 752             vts.manager_inf.p_audio_attr[i-1].i_coding_mode,
 753             vts.manager_inf.p_audio_attr[i-1].i_multichannel_extension,
 754             vts.manager_inf.p_audio_attr[i-1].i_type,
 755             vts.manager_inf.p_audio_attr[i-1].i_appl_mode,
 756             vts.manager_inf.p_audio_attr[i-1].i_foo,
 757             vts.manager_inf.p_audio_attr[i-1].i_test,
 758             vts.manager_inf.p_audio_attr[i-1].i_bar,
 759             vts.manager_inf.p_audio_attr[i-1].i_quantization,
 760             vts.manager_inf.p_audio_attr[i-1].i_sample_freq,
 761             vts.manager_inf.p_audio_attr[i-1].i_lang_code,
 762             vts.manager_inf.p_audio_attr[i-1].i_caption );
 763
 764             switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 765             {
 766             case 0x00:              /* AC3 */
 767                 i_id = ( ( i_ac3 + i ) << 8 ) | 0xbd;
 768                 p_es = input_AddES( p_input,
 769                                     p_input->stream.pp_programs[0], i_id, 0 );
 770                 p_es->i_stream_id = 0xbd;
 771                 p_es->i_type = AC3_AUDIO_ES;
 772                 p_es->b_audio = 1;
 773                 p_es->i_cat = AUDIO_ES;
 774                 strcpy( p_es->psz_desc, Language( hton16(
 775                     vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 776                 strcat( p_es->psz_desc, " (ac3)" );
 777
 778                 intf_WarnMsg( 1, "dvd info: audio stream %d %s\t(0x%x)",
 779                               i, p_es->psz_desc, i_id );
 780
 781                 break;
 782             case 0x02:
 783             case 0x03:              /* MPEG audio */
 784                 i_id = 0xbf + i;
 785                 p_es = input_AddES( p_input,
 786                                     p_input->stream.pp_programs[0], i_id, 0 );
 787                 p_es->i_stream_id = i_id;
 788                 p_es->i_type = MPEG2_AUDIO_ES;
 789                 p_es->b_audio = 1;
 790                 p_es->i_cat = AUDIO_ES;
 791                 strcpy( p_es->psz_desc, Language( hton16(
 792                     vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 793                 strcat( p_es->psz_desc, " (mpeg)" );
 794
 795                 intf_WarnMsg( 1, "dvd info: audio stream %d %s\t(0x%x)",
 796                               i, p_es->psz_desc, i_id );
 797
 798                 break;
 799             case 0x04:              /* LPCM */
 800 #if 0
 801                 i_id = ( ( i_lpcm + i ) << 8 ) | 0xbd;
 802                 p_es = input_AddES( p_input,
 803                                     p_input->stream.pp_programs[0], i_id, 0 );
 804                 p_es->i_stream_id = i_id;
 805                 p_es->i_type = LPCM_AUDIO_ES;
 806                 p_es->b_audio = 1;
 807                 p_es->i_cat = AUDIO_ES;
 808                 strcpy( p_es->psz_desc, Language( hton16(
 809                     vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 810                 strcat( p_es->psz_desc, " (lpcm)" );
 811
 812                 intf_WarnMsg( 1, "dvd info: audio stream %d %s\t(0x%x)",
 813                               i, p_es->psz_desc, i_id );
 814 #else
 815                 i_id = 0;
 816                 intf_ErrMsg( "dvd warning: LPCM audio not handled yet" );
 817 #endif
 818                 break;
 819             case 0x06:              /* DTS */
 820                 i_id = 0;
 821                 i_ac3--;
 822                 intf_ErrMsg( "dvd warning: DTS audio not handled yet" );
 823                 break;
 824             default:
 825                 i_id = 0;
 826                 intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 827                          vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 828             }
 829
 830         }
 831
 832         /* Sub Picture ES */
 833
 834         b_last = 0;
 835         i_sub_pic = 0x20;
 836         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 837         {
 838             if( !b_last )
 839             {
 840                 i_id = ( i_sub_pic++ << 8 ) | 0xbd;
 841                 p_es = input_AddES( p_input,
 842                                     p_input->stream.pp_programs[0], i_id, 0 );
 843                 p_es->i_stream_id = 0xbd;
 844                 p_es->i_type = DVD_SPU_ES;
 845                 p_es->i_cat = SPU_ES;
 846                 strcpy( p_es->psz_desc, Language( hton16(
 847                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 848                 intf_WarnMsg( 1, "dvd info: spu stream %d %s\t(0x%x)",
 849                               i, p_es->psz_desc, i_id );
 850
 851                 /* The before the last spu has a 0x0 prefix */
 852                 b_last =
 853                     ( vts.manager_inf.p_spu_attr[i].i_prefix == 0 );
 854             }
 855         }
 856
 857         if( p_main->b_audio )
 858         {
 859             /* For audio: first one if none or a not existing one specified */
 860             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 861             if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 862             {
 863                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 864                 i_audio = 1;
 865             }
 866             if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
 867             {
 868                 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 869             }
 870         }
 871
 872         if( p_main->b_video )
 873         {
 874             /* for spu, default is none */
 875             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 876             if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 877             {
 878                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 879                 i_spu = 0;
 880             }
 881             if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
 882             {
 883                 i_spu += vts.manager_inf.i_audio_nb;
 884                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 885             }
 886         }
 887     } /* i_title >= 0 */
 888     else
 889     {
 890         p_area = p_input->stream.p_selected_area;
 891     }
 892 #undef vts
 893 #undef vmg
 894
 895     /*
 896      * Chapter selection
 897      */
 898
 899
 900     if( p_area->i_part != p_dvd->i_chapter )
 901     {
 902         if( ( p_area->i_part > 0 ) &&
 903             ( p_area->i_part <= p_area->i_part_nb ))
 904         {
 905             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 906             {
 907                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 908                 p_input->b_error = 1;
 909                 return -1;
 910             }
 911
 912             p_input->stream.p_selected_area->i_tell = p_dvd->i_start -
 913                                                       p_area->i_start;
 914             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 915
 916             intf_WarnMsg( 2, "dvd info: chapter %d start at: %lld",
 917                                         p_area->i_part, p_area->i_tell );
 918         }
 919         else
 920         {
 921             p_area->i_part = 1;
 922             p_dvd->i_chapter = 1;
 923         }
 924     }
 925 #define title \
 926     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 927
 928     if( p_area->i_angle != p_dvd->i_angle )
 929     {
 930         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 931         {
 932             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 933             {
 934                 p_dvd->i_cell = 0;
 935             }
 936             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 937             p_dvd->i_angle = p_area->i_angle;
 938
 939             DVDFindSector( p_dvd );
 940             p_dvd->i_cell += p_dvd->i_angle_cell;
 941         }
 942         else
 943         {
 944             p_dvd->i_angle = p_area->i_angle;
 945         }
 946
 947         intf_WarnMsg( 2, "dvd info: angle %d selected", p_area->i_angle );
 948     }
 949
 950     /* warn interface that something has changed */
 951     p_input->stream.b_changed = 1;
 952
 953     vlc_mutex_unlock( &p_input->stream.stream_lock );
 954
 955     return 0;
 956 }
 957
 958
 959 /*****************************************************************************
 960  * DVDRead: reads data packets into the netlist.
 961  *****************************************************************************
 962  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 963  * EOF.
 964  *****************************************************************************/
 965 static int DVDRead( input_thread_t * p_input,
 966                     data_packet_t ** pp_packets )
 967 {
 968     thread_dvd_data_t *     p_dvd;
 969     dvd_netlist_t *         p_netlist;
 970     input_area_t *          p_area;
 971     struct iovec *          p_vec;
 972     struct data_packet_s *  pp_data[p_input->i_read_once];
 973     u8 *                    pi_cur;
 974     int                     i_block_once;
 975     int                     i_packet_size;
 976     int                     i_iovec;
 977     int                     i_packet;
 978     int                     i_pos;
 979     int                     i_read_bytes;
 980     int                     i_read_blocks;
 981     off_t                   i_off;
 982     boolean_t               b_eof;
 983     boolean_t               b_eot;
 984
 985     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 986     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 987
 988     /* Get an iovec pointer */
 989     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 990     {
 991         intf_ErrMsg( "dvd error: can't get iovec" );
 992         return -1;
 993     }
 994
 995     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 996
 997     /* Get the position of the next cell if we're at cell end */
 998     if( i_block_once <= 0 )
 999     {
1000         int     i_angle;
1001
1002         p_dvd->i_cell++;
1003         p_dvd->i_angle_cell++;
1004
1005         /* Find cell index in adress map */
1006         if( DVDFindSector( p_dvd ) < 0 )
1007         {
1008             pp_packets[0] = NULL;
1009             intf_ErrMsg( "dvd error: can't find next cell" );
1010             return 1;
1011         }
1012
1013         /* Position the fd pointer on the right address */
1014         i_off = lseek( p_dvd->i_fd,
1015                        p_dvd->i_title_start +
1016                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET );
1017
1018         /* update chapter : it will be easier when we have navigation
1019          * ES support */
1020         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
1021         {
1022             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1023             {
1024                 i_angle = p_dvd->i_angle - 1;
1025             }
1026             else
1027             {
1028                 i_angle = 0;
1029             }
1030             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
1031                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
1032             {
1033                 p_dvd->i_chapter++;
1034             }
1035         }
1036
1037         vlc_mutex_lock( &p_input->stream.stream_lock );
1038
1039         p_input->stream.p_selected_area->i_tell = i_off -
1040                                     p_input->stream.p_selected_area->i_start;
1041         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1042
1043         /* the synchro has to be reinitialized when we change cell */
1044         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_REINIT;
1045
1046         vlc_mutex_unlock( &p_input->stream.stream_lock );
1047
1048         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
1049     }
1050
1051     /* the number of blocks read is the maw between the requested
1052      * value and the leaving block in the cell */
1053     if( i_block_once > p_dvd->i_block_once )
1054     {
1055         i_block_once = p_dvd->i_block_once;
1056     }
1057 //intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
1058
1059     p_netlist->i_read_once = i_block_once;
1060
1061     /* Reads from DVD */
1062     i_read_bytes = readv( p_dvd->i_fd, p_vec, i_block_once );
1063     i_read_blocks = ( i_read_bytes + 0x7ff ) >> 11;
1064
1065     /* Update netlist indexes */
1066     DVDMviovec( p_netlist, i_read_blocks, pp_data );
1067
1068     /* Update global position */
1069     p_dvd->i_sector += i_read_blocks;
1070
1071     i_packet = 0;
1072
1073     /* Read headers to compute payload length */
1074     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
1075     {
1076         if( p_dvd->b_encrypted )
1077         {
1078             CSSDescrambleSector( p_dvd->p_css->pi_title_key,
1079                                  p_vec[i_iovec].iov_base );
1080             ((u8*)(p_vec[i_iovec].iov_base))[0x14] &= 0x8F;
1081         }
1082
1083         i_pos = 0;
1084
1085         while( i_pos < p_netlist->i_buffer_size )
1086         {
1087             pi_cur = (u8*)(p_vec[i_iovec].iov_base + i_pos);
1088
1089             /*default header */
1090             if( U32_AT( pi_cur ) != 0x1BA )
1091             {
1092                 /* That's the case for all packets, except pack header. */
1093                 i_packet_size = U16_AT( pi_cur + 4 );
1094                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
1095             }
1096             else
1097             {
1098                 /* Pack header. */
1099                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
1100                 {
1101                     /* MPEG-2 */
1102                     i_packet_size = 8;
1103                 }
1104                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
1105                 {
1106                     /* MPEG-1 */
1107                     i_packet_size = 6;
1108                 }
1109                 else
1110                 {
1111                     intf_ErrMsg( "Unable to determine stream type" );
1112                     return( -1 );
1113                 }
1114
1115                 pp_packets[i_packet] = pp_data[i_iovec];
1116
1117             }
1118
1119             (*pp_data[i_iovec]->pi_refcount)++;
1120
1121             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
1122
1123             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
1124
1125             pp_packets[i_packet]->p_payload_start =
1126                     pp_packets[i_packet]->p_buffer + i_pos;
1127
1128             pp_packets[i_packet]->p_payload_end =
1129                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
1130
1131             pp_packets[i_packet]->p_next = NULL;
1132             pp_packets[i_packet]->b_discard_payload = 0;
1133
1134             i_packet++;
1135             i_pos += i_packet_size + 6;
1136         }
1137     }
1138
1139     pp_packets[i_packet] = NULL;
1140
1141     vlc_mutex_lock( &p_input->stream.stream_lock );
1142
1143     p_input->stream.p_selected_area->i_tell += i_read_bytes;
1144     b_eot = !( p_input->stream.p_selected_area->i_tell < p_dvd->i_size );
1145     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
1146     p_area = p_input->stream.pp_areas[p_dvd->i_title + 1];
1147
1148     vlc_mutex_unlock( &p_input->stream.stream_lock );
1149
1150     if( b_eof )
1151     {
1152         return 1;
1153     }
1154
1155     if( b_eot )
1156     {
1157         p_dvd->i_title++;
1158         DVDSetArea( p_input, p_area );
1159         return 0;
1160     }
1161
1162     if( i_read_blocks == i_block_once )
1163     {
1164         return 0;
1165     }
1166
1167     return -1;
1168 }
1169
1170 /*****************************************************************************
1171  * DVDRewind : reads a stream backward
1172  *****************************************************************************/
1173 static int DVDRewind( input_thread_t * p_input )
1174 {
1175     return( -1 );
1176 }
1177
1178 /*****************************************************************************
1179  * DVDSeek : Goes to a given position on the stream ; this one is used by the
1180  * input and translate chronological position from input to logical postion
1181  * on the device
1182  * ---
1183  * The lock should be taken before calling this function.
1184  *****************************************************************************/
1185 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1186 {
1187     thread_dvd_data_t *     p_dvd;
1188     off_t                   i_pos;
1189     int                     i_prg_cell;
1190     int                     i_cell;
1191     int                     i_chapter;
1192     int                     i_angle;
1193
1194     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1195
1196     /* we have to take care of offset of beginning of title */
1197     i_pos = i_off + p_input->stream.p_selected_area->i_start
1198                   - p_dvd->i_title_start;
1199
1200     /* update navigation data */
1201     p_dvd->i_sector = i_pos >> 11;
1202
1203     i_prg_cell = 0;
1204     i_chapter = 0;
1205
1206     /* parse vobu address map to find program cell */
1207     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1208     {
1209         i_prg_cell++;
1210     }
1211
1212     p_dvd->i_prg_cell = i_prg_cell;
1213
1214     if( DVDChooseAngle( p_dvd ) < 0 )
1215     {
1216         p_input->b_error = 1;
1217         return;
1218     }
1219
1220     p_dvd->i_cell = 0;
1221
1222     /* Find first title cell which is inside program cell */
1223     if( DVDFindCell( p_dvd ) < 0 )
1224     {
1225         /* no following cell : we're at eof */
1226         intf_ErrMsg( "dvd error: cell seeking failed" );
1227         p_input->b_error = 1;
1228         return;
1229     }
1230
1231     i_cell = p_dvd->i_cell;
1232
1233 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1234     /* parse cell address map to find title cell containing sector */
1235     while( cell.i_end_sector < p_dvd->i_sector )
1236     {
1237         i_cell++;
1238     }
1239
1240     p_dvd->i_cell = i_cell;
1241
1242     /* if we're inside a multi-angle zone, we have to choose i_sector
1243      * in the current angle ; we can't do it all the time since cells
1244      * can be very wide out of such zones */
1245     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1246     {
1247         p_dvd->i_sector = MAX(
1248                 cell.i_start_sector,
1249                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1250     }
1251
1252     p_dvd->i_end_sector = MIN(
1253             cell.i_end_sector,
1254             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1255 #undef cell
1256     /* update chapter */
1257     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1258     {
1259         i_angle = p_dvd->i_angle - 1;
1260     }
1261     else
1262     {
1263         i_angle = 0;
1264     }
1265     while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1266                 ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1267            ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1268     {
1269         i_chapter++;
1270     }
1271
1272     p_dvd->i_chapter = i_chapter;
1273     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1274
1275     p_input->stream.p_selected_area->i_tell =
1276                 lseek( p_dvd->i_fd, p_dvd->i_title_start +
1277                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET ) -
1278                 p_input->stream.p_selected_area->i_start;
1279 /*
1280     intf_WarnMsg( 1, "Program Cell: %d Cell: %d Chapter: %d",
1281                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1282 */
1283
1284     return;
1285 }
1286
1287 #define cell  p_dvd->p_ifo->vts.cell_inf
1288
1289 /*****************************************************************************
1290  * DVDFindCell: adjust the title cell index with the program cell
1291  *****************************************************************************/
1292 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1293 {
1294     int                 i_cell;
1295     int                 i_index;
1296
1297     i_cell = p_dvd->i_cell;
1298     i_index = p_dvd->i_prg_cell;
1299
1300     if( i_cell >= cell.i_cell_nb )
1301     {
1302         return -1;
1303     }
1304
1305     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1306                    cell.p_cell_map[i_cell].i_vob_id ) ||
1307       ( title.p_cell_pos[i_index].i_cell_id !=
1308                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1309            ( i_cell < cell.i_cell_nb - 1 ) )
1310     {
1311         i_cell++;
1312     }
1313
1314 /*
1315 intf_WarnMsg( 1, "FindCell: i_cell %d i_index %d found %d nb %d",
1316                     p_dvd->i_cell,
1317                     p_dvd->i_prg_cell,
1318                     i_cell,
1319                     cell.i_cell_nb );
1320 */
1321
1322     p_dvd->i_cell = i_cell;
1323
1324     return 0;
1325 }
1326
1327 #undef cell
1328
1329 /*****************************************************************************
1330  * DVDFindSector: find cell index in adress map from index in
1331  * information table program map and give corresponding sectors.
1332  *****************************************************************************/
1333 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1334 {
1335
1336     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1337     {
1338         p_dvd->i_prg_cell++;
1339
1340         if( DVDChooseAngle( p_dvd ) < 0 )
1341         {
1342             return -1;
1343         }
1344     }
1345
1346     if( DVDFindCell( p_dvd ) < 0 )
1347     {
1348         intf_ErrMsg( "dvd error: can't find sector" );
1349         return -1;
1350     }
1351
1352     /* Find start and end sectors of new cell */
1353 #if 1
1354     p_dvd->i_sector = MAX(
1355          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1356          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1357     p_dvd->i_end_sector = MIN(
1358          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1359          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1360 #else
1361     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1362     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1363 #endif
1364
1365 /*
1366     intf_WarnMsg( 1, "cell: %d sector1: 0x%x end1: 0x%x\n"
1367                    "index: %d sector2: 0x%x end2: 0x%x\n"
1368                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1369         p_dvd->i_cell,
1370         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1371         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1372         p_dvd->i_prg_cell,
1373         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1374         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1375         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1376         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1377         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1378 */
1379
1380     return 0;
1381 }
1382
1383 /*****************************************************************************
1384  * DVDChapterSelect: find the cell corresponding to requested chapter
1385  *****************************************************************************/
1386 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1387 {
1388
1389     /* Find cell index in Program chain for current chapter */
1390     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1391     p_dvd->i_cell = 0;
1392     p_dvd->i_sector = 0;
1393
1394     DVDChooseAngle( p_dvd );
1395
1396     /* Search for cell_index in cell adress_table and initialize
1397      * start sector */
1398     if( DVDFindSector( p_dvd ) < 0 )
1399     {
1400         intf_ErrMsg( "dvd error: can't select chapter" );
1401         return -1;
1402     }
1403
1404     /* start is : beginning of vts vobs + offset to vob x */
1405     p_dvd->i_start = p_dvd->i_title_start +
1406                      DVD_LB_SIZE * (off_t)( p_dvd->i_sector );
1407
1408     /* Position the fd pointer on the right address */
1409     p_dvd->i_start = lseek( p_dvd->i_fd, p_dvd->i_start, SEEK_SET );
1410
1411     p_dvd->i_chapter = i_chapter;
1412     return 0;
1413 }
1414
1415 /*****************************************************************************
1416  * DVDChooseAngle: select the cell corresponding to the selected angle
1417  *****************************************************************************/
1418 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1419 {
1420     /* basic handling of angles */
1421     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1422                     >> 12 ) )
1423     {
1424         /* we enter a muli-angle section */
1425         case 0x5:
1426             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1427             p_dvd->i_angle_cell = 0;
1428 //            intf_WarnMsg( 1, "dvd info: choosing angle %d", p_dvd->i_angle );
1429             break;
1430         /* we exit a multi-angle section */
1431         case 0x9:
1432         case 0xd:
1433             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1434             break;
1435     }
1436
1437     return 0;
1438 }
1439
1440 #undef title