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 1.50 2001/04/27 19:29:11 massiot Exp $
  14  *
  15  * Author: Stéphane Borel <stef@via.ecp.fr>
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  30  *****************************************************************************/
  31
  32 /*****************************************************************************
  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 #include <errno.h>
  55
  56 #include "config.h"
  57 #include "common.h"
  58 #include "threads.h"
  59 #include "mtime.h"
  60 #include "tests.h"
  61
  62 #include "intf_msg.h"
  63
  64 #include "main.h"
  65
  66 #include "stream_control.h"
  67 #include "input_ext-intf.h"
  68 #include "input_ext-dec.h"
  69
  70 #include "input.h"
  71
  72 #include "dvd_netlist.h"
  73 #include "dvd_ifo.h"
  74 #include "dvd_css.h"
  75 #include "input_dvd.h"
  76 #include "mpeg_system.h"
  77
  78 #include "debug.h"
  79
  80 #include "modules.h"
  81
  82 /*****************************************************************************
  83  * Local tables
  84  *****************************************************************************/
  85 static struct
  86 {
  87     char    p_code[3];
  88     char    p_lang_long[20];
  89 }
  90
  91 lang_tbl[] =
  92 {
  93     /* The ISO 639 language codes.
  94      * Language names with * prefix are not spelled in their own language
  95      */
  96     { "  ", "Not Specified" },
  97     { "aa", "*Afar" },
  98     { "ab", "*Abkhazian" },
  99     { "af", "*Afrikaans" },
 100     { "am", "*Amharic" },
 101     { "ar", "*Arabic" },
 102     { "as", "*Assamese" },
 103     { "ay", "*Aymara" },
 104     { "az", "*Azerbaijani" },
 105     { "ba", "*Bashkir" },
 106     { "be", "*Byelorussian" },
 107     { "bg", "*Bulgarian" },
 108     { "bh", "*Bihari" },
 109     { "bi", "*Bislama" },
 110     { "bn", "*Bengali; Bangla" },
 111     { "bo", "*Tibetan" },
 112     { "br", "*Breton" },
 113     { "ca", "*Catalan" },
 114     { "co", "*Corsican" },
 115     { "cs", "*Czech(Ceske)" },
 116     { "cy", "*Welsh" },
 117     { "da", "Dansk" },
 118     { "de", "Deutsch" },
 119     { "dz", "*Bhutani" },
 120     { "el", "*Greek" },
 121     { "en", "English" },
 122     { "eo", "*Esperanto" },
 123     { "es", "Espanol" },
 124     { "et", "*Estonian" },
 125     { "eu", "*Basque" },
 126     { "fa", "*Persian" },
 127     { "fi", "Suomi" },
 128     { "fj", "*Fiji" },
 129     { "fo", "*Faroese" },
 130     { "fr", "Francais" },
 131     { "fy", "*Frisian" },
 132     { "ga", "*Irish" },
 133     { "gd", "*Scots Gaelic" },
 134     { "gl", "*Galician" },
 135     { "gn", "*Guarani" },
 136     { "gu", "*Gujarati" },
 137     { "ha", "*Hausa" },
 138     { "he", "*Hebrew" },                                      /* formerly iw */
 139     { "hi", "*Hindi" },
 140     { "hr", "Hrvatski" },                                        /* Croatian */
 141     { "hu", "Magyar" },
 142     { "hy", "*Armenian" },
 143     { "ia", "*Interlingua" },
 144     { "id", "*Indonesian" },                                  /* formerly in */
 145     { "ie", "*Interlingue" },
 146     { "ik", "*Inupiak" },
 147     { "in", "*Indonesian" },                               /* replaced by id */
 148     { "is", "Islenska" },
 149     { "it", "Italiano" },
 150     { "iu", "*Inuktitut" },
 151     { "iw", "*Hebrew" },                                   /* replaced by he */
 152     { "ja", "*Japanese" },
 153     { "ji", "*Yiddish" },                                  /* replaced by yi */
 154     { "jw", "*Javanese" },
 155     { "ka", "*Georgian" },
 156     { "kk", "*Kazakh" },
 157     { "kl", "*Greenlandic" },
 158     { "km", "*Cambodian" },
 159     { "kn", "*Kannada" },
 160     { "ko", "*Korean" },
 161     { "ks", "*Kashmiri" },
 162     { "ku", "*Kurdish" },
 163     { "ky", "*Kirghiz" },
 164     { "la", "*Latin" },
 165     { "ln", "*Lingala" },
 166     { "lo", "*Laothian" },
 167     { "lt", "*Lithuanian" },
 168     { "lv", "*Latvian, Lettish" },
 169     { "mg", "*Malagasy" },
 170     { "mi", "*Maori" },
 171     { "mk", "*Macedonian" },
 172     { "ml", "*Malayalam" },
 173     { "mn", "*Mongolian" },
 174     { "mo", "*Moldavian" },
 175     { "mr", "*Marathi" },
 176     { "ms", "*Malay" },
 177     { "mt", "*Maltese" },
 178     { "my", "*Burmese" },
 179     { "na", "*Nauru" },
 180     { "ne", "*Nepali" },
 181     { "nl", "Nederlands" },
 182     { "no", "Norsk" },
 183     { "oc", "*Occitan" },
 184     { "om", "*(Afan) Oromo" },
 185     { "or", "*Oriya" },
 186     { "pa", "*Punjabi" },
 187     { "pl", "*Polish" },
 188     { "ps", "*Pashto, Pushto" },
 189     { "pt", "Portugues" },
 190     { "qu", "*Quechua" },
 191     { "rm", "*Rhaeto-Romance" },
 192     { "rn", "*Kirundi" },
 193     { "ro", "*Romanian"  },
 194     { "ru", "*Russian" },
 195     { "rw", "*Kinyarwanda" },
 196     { "sa", "*Sanskrit" },
 197     { "sd", "*Sindhi" },
 198     { "sg", "*Sangho" },
 199     { "sh", "*Serbo-Croatian" },
 200     { "si", "*Sinhalese" },
 201     { "sk", "*Slovak" },
 202     { "sl", "*Slovenian" },
 203     { "sm", "*Samoan" },
 204     { "sn", "*Shona"  },
 205     { "so", "*Somali" },
 206     { "sq", "*Albanian" },
 207     { "sr", "*Serbian" },
 208     { "ss", "*Siswati" },
 209     { "st", "*Sesotho" },
 210     { "su", "*Sundanese" },
 211     { "sv", "Svenska" },
 212     { "sw", "*Swahili" },
 213     { "ta", "*Tamil" },
 214     { "te", "*Telugu" },
 215     { "tg", "*Tajik" },
 216     { "th", "*Thai" },
 217     { "ti", "*Tigrinya" },
 218     { "tk", "*Turkmen" },
 219     { "tl", "*Tagalog" },
 220     { "tn", "*Setswana" },
 221     { "to", "*Tonga" },
 222     { "tr", "*Turkish" },
 223     { "ts", "*Tsonga" },
 224     { "tt", "*Tatar" },
 225     { "tw", "*Twi" },
 226     { "ug", "*Uighur" },
 227     { "uk", "*Ukrainian" },
 228     { "ur", "*Urdu" },
 229     { "uz", "*Uzbek" },
 230     { "vi", "*Vietnamese" },
 231     { "vo", "*Volapuk" },
 232     { "wo", "*Wolof" },
 233     { "xh", "*Xhosa" },
 234     { "yi", "*Yiddish" },                                     /* formerly ji */
 235     { "yo", "*Yoruba" },
 236     { "za", "*Zhuang" },
 237     { "zh", "*Chinese" },
 238     { "zu", "*Zulu" },
 239     { "\0", "" }
 240 };
 241
 242 /*****************************************************************************
 243  * Local prototypes
 244  *****************************************************************************/
 245 /* called from outside */
 246 static int  DVDProbe    ( probedata_t *p_data );
 247 static void DVDInit     ( struct input_thread_s * );
 248 static void DVDEnd      ( struct input_thread_s * );
 249 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 250 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 251 static void DVDSeek     ( struct input_thread_s *, off_t );
 252 static int  DVDRewind   ( struct input_thread_s * );
 253
 254 /* called only inside */
 255 static char * Language( u16 );
 256 static int  DVDChooseAngle( thread_dvd_data_t * );
 257 static int  DVDFindCell( thread_dvd_data_t * );
 258 static int  DVDFindSector( thread_dvd_data_t * );
 259 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 260
 261 /*****************************************************************************
 262  * Functions exported as capabilities. They are declared as static so that
 263  * we don't pollute the namespace too much.
 264  *****************************************************************************/
 265 void _M( input_getfunctions )( function_list_t * p_function_list )
 266 {
 267 #define input p_function_list->functions.input
 268     p_function_list->pf_probe = DVDProbe;
 269     input.pf_init             = DVDInit;
 270     input.pf_open             = input_FileOpen;
 271     input.pf_close            = input_FileClose;
 272     input.pf_end              = DVDEnd;
 273     input.pf_read             = DVDRead;
 274     input.pf_set_area         = DVDSetArea;
 275     input.pf_demux            = input_DemuxPS;
 276     input.pf_new_packet       = DVDNewPacket;
 277     input.pf_new_pes          = DVDNewPES;
 278     input.pf_delete_packet    = DVDDeletePacket;
 279     input.pf_delete_pes       = DVDDeletePES;
 280     input.pf_rewind           = DVDRewind;
 281     input.pf_seek             = DVDSeek;
 282 #undef input
 283 }
 284
 285 /*
 286  * Local tools to decode some data in ifo
 287  */
 288
 289 /*****************************************************************************
 290  * Language: gives the long language name from the two-letters ISO-639 code
 291  *****************************************************************************/
 292 static char * Language( u16 i_code )
 293 {
 294     int     i = 0;
 295
 296     while( memcmp( lang_tbl[i].p_code, &i_code, 2 ) &&
 297            lang_tbl[i].p_lang_long[0] )
 298     {
 299         i++;
 300     }
 301
 302     return lang_tbl[i].p_lang_long;
 303 }
 304
 305 /*
 306  * Data reading functions
 307  */
 308
 309 /*****************************************************************************
 310  * DVDProbe: verifies that the stream is a PS stream
 311  *****************************************************************************/
 312 static int DVDProbe( probedata_t *p_data )
 313 {
 314     input_thread_t * p_input = (input_thread_t *)p_data;
 315
 316     char * psz_name = p_input->p_source;
 317     int i_handle;
 318     int i_score = 5;
 319
 320     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 321     {
 322 #ifdef HAVE_CSS
 323         return( 999 );
 324 #else /* HAVE_CSS */
 325         return( 998 );
 326 #endif /* HAVE_CSS */
 327     }
 328
 329     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 330     {
 331         /* If the user specified "dvd:" then it's probably a DVD */
 332 #ifdef HAVE_CSS
 333         i_score = 100;
 334 #else /* HAVE_CSS */
 335         i_score = 90;
 336 #endif /* HAVE_CSS */
 337         psz_name += 4;
 338     }
 339
 340     i_handle = open( psz_name, 0 );
 341     if( i_handle == -1 )
 342     {
 343         return( 0 );
 344     }
 345     close( i_handle );
 346
 347     return( i_score );
 348 }
 349
 350 /*****************************************************************************
 351  * DVDInit: initializes DVD structures
 352  *****************************************************************************/
 353 static void DVDInit( input_thread_t * p_input )
 354 {
 355     thread_dvd_data_t *  p_dvd;
 356     input_area_t *       p_area;
 357     int                  i_title;
 358     int                  i_chapter;
 359     int                  i;
 360
 361     /* I don't want DVDs to start playing immediately */
 362 //    p_input->stream.i_new_status = PAUSE_S;
 363
 364     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 365     if( p_dvd == NULL )
 366     {
 367         intf_ErrMsg( "dvd error: out of memory" );
 368         p_input->b_error = 1;
 369         return;
 370     }
 371
 372     p_input->p_plugin_data = (void *)p_dvd;
 373     p_input->p_method_data = NULL;
 374
 375     p_dvd->i_fd = p_input->i_handle;
 376
 377     /* reading several block once seems to cause lock-up
 378      * when using input_ToggleES
 379      * who wrote thez damn buggy piece of shit ??? --stef */
 380     p_dvd->i_block_once = 1;//32;
 381     p_input->i_read_once = 8;//128;
 382
 383     i = CSSTest( p_input->i_handle );
 384
 385     if( i < 0 )
 386     {
 387         free( p_dvd );
 388         p_input->b_error = 1;
 389         return;
 390     }
 391
 392     p_dvd->b_encrypted = i;
 393
 394     lseek( p_input->i_handle, 0, SEEK_SET );
 395
 396     /* Reading structures initialisation */
 397     p_input->p_method_data =
 398         DVDNetlistInit( 2048, 8192, 2048, DVD_LB_SIZE, p_dvd->i_block_once );
 399     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 400
 401     /* Ifo allocation & initialisation */
 402     if( IfoCreate( p_dvd ) < 0 )
 403     {
 404         intf_ErrMsg( "dvd error: allcation error in ifo" );
 405         p_input->b_error = 1;
 406         return;
 407     }
 408
 409     if( IfoInit( p_dvd->p_ifo ) < 0 )
 410     {
 411         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 412         free( p_dvd );
 413         p_input->b_error = 1;
 414         return;
 415     }
 416
 417     /* CSS initialisation */
 418     if( p_dvd->b_encrypted )
 419     {
 420         p_dvd->p_css = malloc( sizeof(css_t) );
 421         if( p_dvd->p_css == NULL )
 422         {
 423             intf_ErrMsg( "dvd error: couldn't create css structure" );
 424             free( p_dvd );
 425             p_input->b_error = 1;
 426             return;
 427         }
 428
 429         p_dvd->p_css->i_agid = 0;
 430
 431         if( CSSInit( p_input->i_handle, p_dvd->p_css ) < 0 )
 432         {
 433             intf_ErrMsg( "dvd error: fatal failure in css" );
 434             free( p_dvd->p_css );
 435             free( p_dvd );
 436             p_input->b_error = 1;
 437             return;
 438         }
 439
 440         intf_WarnMsg( 2, "dvd info: css initialized" );
 441     }
 442
 443     /* Set stream and area data */
 444     vlc_mutex_lock( &p_input->stream.stream_lock );
 445
 446     /* Initialize ES structures */
 447     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 448
 449     /* disc input method */
 450     p_input->stream.i_method = INPUT_METHOD_DVD;
 451
 452 #define title_inf p_dvd->p_ifo->vmg.title_inf
 453     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 454
 455 #define area p_input->stream.pp_areas
 456     /* We start from 1 here since the default area 0
 457      * is reserved for video_ts.vob */
 458     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 459     {
 460         input_AddArea( p_input );
 461
 462         /* Titles are Program Chains */
 463         area[i]->i_id = i;
 464
 465         /* Absolute start offset and size
 466          * We can only set that with vts ifo, so we do it during the
 467          * first call to DVDSetArea */
 468         area[i]->i_start = 0;
 469         area[i]->i_size = 0;
 470
 471         /* Number of chapters */
 472         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 473         area[i]->i_part = 1;
 474
 475         /* Number of angles */
 476         area[i]->i_angle_nb = 0;
 477         area[i]->i_angle = 1;
 478
 479         /* Offset to vts_i_0.ifo */
 480         area[i]->i_plugin_data = p_dvd->p_ifo->i_off +
 481                        ( title_inf.p_attr[i-1].i_start_sector * DVD_LB_SIZE );
 482     }
 483 #undef area
 484
 485     /* Get requested title - if none try the first title */
 486     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 487     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 488     {
 489         i_title = 1;
 490     }
 491
 492 #undef title_inf
 493
 494     /* Get requested chapter - if none defaults to first one */
 495     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 496     if( i_chapter <= 0 )
 497     {
 498         i_chapter = 1;
 499     }
 500
 501     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 502
 503     p_area = p_input->stream.pp_areas[i_title];
 504
 505     vlc_mutex_unlock( &p_input->stream.stream_lock );
 506
 507     /* set title, chapter, audio and subpic */
 508     DVDSetArea( p_input, p_area );
 509
 510     return;
 511 }
 512
 513 /*****************************************************************************
 514  * DVDEnd: frees unused data
 515  *****************************************************************************/
 516 static void DVDEnd( input_thread_t * p_input )
 517 {
 518     thread_dvd_data_t *     p_dvd;
 519     dvd_netlist_t *         p_netlist;
 520
 521     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 522     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 523
 524     if( p_dvd->b_encrypted )
 525     {
 526         free( p_dvd->p_css );
 527     }
 528
 529     IfoDestroy( p_dvd->p_ifo );
 530     free( p_dvd );
 531     DVDNetlistEnd( p_netlist );
 532 }
 533
 534 /*****************************************************************************
 535  * DVDSetArea: initialize input data for title x, chapter y.
 536  * It should be called for each user navigation request, and to change
 537  * audio or sub-picture streams.
 538  * ---
 539  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 540  * i_audio, i_spu start from 1 ; 0 means off.
 541  * A negative value for an argument means it does not change
 542  *****************************************************************************/
 543 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 544 {
 545     thread_dvd_data_t *  p_dvd;
 546     es_descriptor_t *    p_es;
 547     int                  i_audio;
 548     int                  i_spu;
 549     u16                  i_id;
 550     u8                   i_ac3;
 551     u8                   i_mpeg;
 552     u8                   i_sub_pic;
 553     u8                   i;
 554     int                  j;
 555     boolean_t            b_last;
 556
 557     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 558
 559     vlc_mutex_lock( &p_input->stream.stream_lock );
 560
 561     if( p_area != p_input->stream.p_selected_area )
 562     {
 563
 564         /*
 565          *  We have to load all title information
 566          */
 567         /* Change the default area */
 568         p_input->stream.p_selected_area =
 569                     p_input->stream.pp_areas[p_area->i_id];
 570
 571 //        vlc_mutex_unlock( &p_input->stream.stream_lock );
 572
 573         /* title number: it is not vts nb!,
 574          * it is what appears in the interface list */
 575         p_dvd->i_title = p_area->i_id;
 576         p_dvd->p_ifo->i_title = p_dvd->i_title;
 577
 578         /* uodate title environnement variable so that we don't
 579          * loop on the same title forever */
 580         main_PutIntVariable( INPUT_TITLE_VAR, p_dvd->i_title + 1 );
 581
 582         /* ifo vts */
 583         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 584         {
 585             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 586             free( p_dvd );
 587             p_input->b_error = 1;
 588             return -1;
 589         }
 590
 591 #define vmg p_dvd->p_ifo->vmg
 592 #define vts p_dvd->p_ifo->vts
 593         /* title position inside the selected vts */
 594         p_dvd->i_vts_title =
 595                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 596         p_dvd->i_title_id =
 597           vts.title_inf.p_title_start[p_dvd->i_vts_title-1].i_title_id;
 598
 599         intf_WarnMsg( 1, "dvd: title %d vts_title %d pgc %d",
 600                         p_dvd->i_title,
 601                         p_dvd->i_vts_title,
 602                         p_dvd->i_title_id );
 603
 604         /* css title key for current vts */
 605         if( p_dvd->b_encrypted )
 606         {
 607             /* this one is vts number */
 608             p_dvd->p_css->i_title =
 609                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_set_num;
 610             p_dvd->p_css->i_title_pos =
 611                     vts.i_pos +
 612                     vts.manager_inf.i_title_vob_start_sector * DVD_LB_SIZE;
 613
 614             j = CSSGetKey( p_input->i_handle, p_dvd->p_css );
 615             if( j < 0 )
 616             {
 617                 intf_ErrMsg( "dvd error: fatal error in vts css key" );
 618                 free( p_dvd );
 619                 p_input->b_error = 1;
 620                 return -1;
 621             }
 622             else if( j > 0 )
 623             {
 624                 intf_ErrMsg( "dvd error: css decryption unavailable" );
 625                 free( p_dvd );
 626                 p_input->b_error = 1;
 627                 return -1;
 628             }
 629         }
 630
 631         /*
 632          * Angle management
 633          */
 634         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 635         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 636         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 637         {
 638             p_dvd->i_angle = 1;
 639         }
 640
 641         /*
 642          * Set selected title start and size
 643          */
 644
 645         /* title set offset */
 646         p_dvd->i_title_start = vts.i_pos + DVD_LB_SIZE *
 647                       (off_t)( vts.manager_inf.i_title_vob_start_sector );
 648
 649         /* last video cell */
 650         p_dvd->i_cell = 0;
 651         p_dvd->i_prg_cell = -1 +
 652             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 653
 654         if( DVDFindCell( p_dvd ) < 0 )
 655         {
 656             intf_ErrMsg( "dvd error: can't find title end" );
 657             p_input->b_error = 1;
 658             return -1;
 659         }
 660
 661         /* temporary hack to fix size in some dvds */
 662         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 663         {
 664             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 665         }
 666
 667
 668         p_dvd->i_sector = 0;
 669         p_dvd->i_size = DVD_LB_SIZE *
 670           (off_t)( vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 671         intf_WarnMsg( 2, "dvd info: stream size 1: %lld @ %d", p_dvd->i_size,
 672                       vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 673
 674         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 675         {
 676             intf_ErrMsg( "dvd error: can't find first chapter" );
 677             p_input->b_error = 1;
 678             return -1;
 679         }
 680
 681         p_dvd->i_size -= (off_t)( p_dvd->i_sector + 1 ) *DVD_LB_SIZE;
 682
 683         intf_WarnMsg( 2, "dvd info: title: %d", p_dvd->i_title );
 684         intf_WarnMsg( 2, "dvd info: vobstart at: %lld", p_dvd->i_start );
 685         intf_WarnMsg( 2, "dvd info: stream size: %lld", p_dvd->i_size );
 686         intf_WarnMsg( 2, "dvd info: number of chapters: %d",
 687                    vmg.title_inf.p_attr[p_dvd->i_title-1].i_chapter_nb );
 688         intf_WarnMsg( 2, "dvd info: number of angles: %d", p_dvd->i_angle_nb );
 689
 690 //        vlc_mutex_lock( &p_input->stream.stream_lock );
 691
 692         /* Area definition */
 693         p_input->stream.p_selected_area->i_start = p_dvd->i_start;
 694         p_input->stream.p_selected_area->i_size = p_dvd->i_size;
 695         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 696         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 697
 698         /*
 699          * Destroy obsolete ES by reinitializing program 0
 700          * and find all ES in title with ifo data
 701          */
 702         if( p_input->stream.pp_programs != NULL )
 703         {
 704             /* We don't use input_EndStream here since
 705              * we keep area structures */
 706
 707             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 708             {
 709                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 710             }
 711
 712             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 713
 714             p_input->stream.pp_selected_es = NULL;
 715             p_input->stream.i_selected_es_number = 0;
 716         }
 717
 718         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 719
 720         /* No PSM to read in DVD mode, we already have all information */
 721         p_input->stream.pp_programs[0]->b_is_ok = 1;
 722         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 723
 724         p_es = NULL;
 725
 726         /* ES 0 -> video MPEG2 */
 727         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 728         p_es->i_stream_id = 0xe0;
 729         p_es->i_type = MPEG2_VIDEO_ES;
 730         p_es->i_cat = VIDEO_ES;
 731         intf_WarnMsg( 1, "dvd info: video mpeg2 stream" );
 732         if( p_main->b_video )
 733         {
 734             input_SelectES( p_input, p_es );
 735         }
 736
 737         /* Audio ES, in the order they appear in .ifo */
 738
 739         i_ac3 = 0x7f;
 740         i_mpeg = 0xc0;
 741
 742         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 743         {
 744
 745         intf_WarnMsg( 1, "Audio %d: %x %x %x %x %x %x %x %x %x %x %x %x", i,
 746             vts.manager_inf.p_audio_attr[i-1].i_num_channels,
 747             vts.manager_inf.p_audio_attr[i-1].i_coding_mode,
 748             vts.manager_inf.p_audio_attr[i-1].i_multichannel_extension,
 749             vts.manager_inf.p_audio_attr[i-1].i_type,
 750             vts.manager_inf.p_audio_attr[i-1].i_appl_mode,
 751             vts.manager_inf.p_audio_attr[i-1].i_foo,
 752             vts.manager_inf.p_audio_attr[i-1].i_test,
 753             vts.manager_inf.p_audio_attr[i-1].i_bar,
 754             vts.manager_inf.p_audio_attr[i-1].i_quantization,
 755             vts.manager_inf.p_audio_attr[i-1].i_sample_freq,
 756             vts.manager_inf.p_audio_attr[i-1].i_lang_code,
 757             vts.manager_inf.p_audio_attr[i-1].i_caption );
 758
 759             switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 760             {
 761             case 0x00:              /* AC3 */
 762                 i_id = ( ( i_ac3 + i ) << 8 ) | 0xbd;
 763                 p_es = input_AddES( p_input,
 764                                     p_input->stream.pp_programs[0], i_id, 0 );
 765                 p_es->i_stream_id = 0xbd;
 766                 p_es->i_type = AC3_AUDIO_ES;
 767                 p_es->b_audio = 1;
 768                 p_es->i_cat = AUDIO_ES;
 769                 strcpy( p_es->psz_desc, Language( hton16(
 770                     vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 771                 strcat( p_es->psz_desc, " (ac3)" );
 772
 773                 intf_WarnMsg( 1, "dvd info: audio stream %d %s\t(0x%x)",
 774                               i, p_es->psz_desc, i_id );
 775
 776                 break;
 777             case 0x02:
 778             case 0x03:              /* MPEG audio */
 779                 i_id = 0xbf + i;
 780                 p_es = input_AddES( p_input,
 781                                     p_input->stream.pp_programs[0], i_id, 0 );
 782                 p_es->i_stream_id = i_id;
 783                 p_es->i_type = MPEG2_AUDIO_ES;
 784                 p_es->b_audio = 1;
 785                 p_es->i_cat = AUDIO_ES;
 786                 strcpy( p_es->psz_desc, Language( hton16(
 787                     vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 788                 strcat( p_es->psz_desc, " (mpeg)" );
 789
 790                 intf_WarnMsg( 1, "dvd info: audio stream %d %s\t(0x%x)",
 791                               i, p_es->psz_desc, i_id );
 792
 793                 break;
 794             case 0x04:              /* LPCM */
 795                 i_id = 0;
 796                 intf_ErrMsg( "dvd warning: LPCM audio not handled yet" );
 797                 break;
 798             case 0x06:              /* DTS */
 799                 i_id = 0;
 800                 i_ac3--;
 801                 intf_ErrMsg( "dvd warning: DTS audio not handled yet" );
 802                 break;
 803             default:
 804                 i_id = 0;
 805                 intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 806                          vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 807             }
 808
 809         }
 810
 811         /* Sub Picture ES */
 812
 813         b_last = 0;
 814         i_sub_pic = 0x20;
 815         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 816         {
 817             if( !b_last )
 818             {
 819                 i_id = ( i_sub_pic++ << 8 ) | 0xbd;
 820                 p_es = input_AddES( p_input,
 821                                     p_input->stream.pp_programs[0], i_id, 0 );
 822                 p_es->i_stream_id = 0xbd;
 823                 p_es->i_type = DVD_SPU_ES;
 824                 p_es->i_cat = SPU_ES;
 825                 strcpy( p_es->psz_desc, Language( hton16(
 826                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 827                 intf_WarnMsg( 1, "dvd info: spu stream %d %s\t(0x%x)",
 828                               i, p_es->psz_desc, i_id );
 829
 830                 /* The before the last spu has a 0x0 prefix */
 831                 b_last =
 832                     ( vts.manager_inf.p_spu_attr[i].i_prefix == 0 );
 833             }
 834         }
 835
 836         if( p_main->b_audio )
 837         {
 838             /* For audio: first one if none or a not existing one specified */
 839             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 840             if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 841             {
 842                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 843                 i_audio = 1;
 844             }
 845             if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
 846             {
 847                 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 848             }
 849         }
 850
 851         if( p_main->b_video )
 852         {
 853             /* for spu, default is none */
 854             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 855             if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 856             {
 857                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 858                 i_spu = 0;
 859             }
 860             if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
 861             {
 862                 i_spu += vts.manager_inf.i_audio_nb;
 863                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 864             }
 865         }
 866     } /* i_title >= 0 */
 867     else
 868     {
 869         p_area = p_input->stream.p_selected_area;
 870     }
 871 #undef vts
 872 #undef vmg
 873
 874     /*
 875      * Chapter selection
 876      */
 877
 878
 879     if( p_area->i_part != p_dvd->i_chapter )
 880     {
 881         if( ( p_area->i_part > 0 ) &&
 882             ( p_area->i_part <= p_area->i_part_nb ))
 883         {
 884             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 885             {
 886                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 887                 p_input->b_error = 1;
 888                 return -1;
 889             }
 890
 891             p_input->stream.p_selected_area->i_tell = p_dvd->i_start -
 892                                                       p_area->i_start;
 893             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 894
 895             intf_WarnMsg( 2, "dvd info: chapter %d start at: %lld",
 896                                         p_area->i_part, p_area->i_tell );
 897         }
 898         else
 899         {
 900             p_area->i_part = 1;
 901             p_dvd->i_chapter = 1;
 902         }
 903     }
 904 #define title \
 905     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 906
 907     if( p_area->i_angle != p_dvd->i_angle )
 908     {
 909         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 910         {
 911             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 912             {
 913                 p_dvd->i_cell = 0;
 914             }
 915             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 916             p_dvd->i_angle = p_area->i_angle;
 917
 918             DVDFindSector( p_dvd );
 919             p_dvd->i_cell += p_dvd->i_angle_cell;
 920         }
 921         else
 922         {
 923             p_dvd->i_angle = p_area->i_angle;
 924         }
 925
 926         intf_WarnMsg( 2, "dvd info: angle %d selected", p_area->i_angle );
 927     }
 928
 929     vlc_mutex_unlock( &p_input->stream.stream_lock );
 930
 931     return 0;
 932 }
 933
 934
 935 /*****************************************************************************
 936  * DVDRead: reads data packets into the netlist.
 937  *****************************************************************************
 938  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 939  * EOF.
 940  *****************************************************************************/
 941 static int DVDRead( input_thread_t * p_input,
 942                     data_packet_t ** pp_packets )
 943 {
 944     thread_dvd_data_t *     p_dvd;
 945     dvd_netlist_t *         p_netlist;
 946     struct iovec *          p_vec;
 947     struct data_packet_s *  pp_data[p_input->i_read_once];
 948     u8 *                    pi_cur;
 949     int                     i_block_once;
 950     int                     i_packet_size;
 951     int                     i_iovec;
 952     int                     i_packet;
 953     int                     i_pos;
 954     int                     i_read_bytes;
 955     int                     i_read_blocks;
 956     off_t                   i_off;
 957     boolean_t               b_eof;
 958
 959     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 960     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 961
 962     /* Get an iovec pointer */
 963     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 964     {
 965         intf_ErrMsg( "dvd error: can't get iovec" );
 966         return -1;
 967     }
 968
 969     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 970
 971     /* Get the position of the next cell if we're at cell end */
 972     if( i_block_once <= 0 )
 973     {
 974         int     i_angle;
 975
 976         p_dvd->i_cell++;
 977         p_dvd->i_angle_cell++;
 978
 979         /* Find cell index in adress map */
 980         if( DVDFindSector( p_dvd ) < 0 )
 981         {
 982             pp_packets[0] = NULL;
 983             intf_ErrMsg( "dvd error: can't find next cell" );
 984             return 1;
 985         }
 986
 987         /* Position the fd pointer on the right address */
 988         i_off = lseek( p_dvd->i_fd,
 989                        p_dvd->i_title_start +
 990                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET );
 991
 992         /* update chapter : it will be easier when we have navigation
 993          * ES support */
 994         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 995         {
 996             i_angle = p_dvd->i_angle - 1;
 997         }
 998         else
 999         {
1000             i_angle = 0;
1001         }
1002         if( title.chapter_map.pi_start_cell[p_dvd->i_chapter-1] <=
1003             ( p_dvd->i_prg_cell - i_angle ) )
1004         {
1005             p_dvd->i_chapter++;
1006         }
1007
1008         vlc_mutex_lock( &p_input->stream.stream_lock );
1009
1010         p_input->stream.p_selected_area->i_tell = i_off -
1011                                     p_input->stream.p_selected_area->i_start;
1012         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1013
1014         /* the synchro has to be reinitialized when we change cell */
1015         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
1016
1017         vlc_mutex_unlock( &p_input->stream.stream_lock );
1018
1019         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
1020     }
1021
1022     /* the number of blocks read is the maw between the requested
1023      * value and the leaving block in the cell */
1024     if( i_block_once > p_dvd->i_block_once )
1025     {
1026         i_block_once = p_dvd->i_block_once;
1027     }
1028 //intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
1029
1030     p_netlist->i_read_once = i_block_once;
1031
1032     /* Reads from DVD */
1033     i_read_bytes = readv( p_dvd->i_fd, p_vec, i_block_once );
1034     i_read_blocks = ( i_read_bytes + 0x7ff ) >> 11;
1035
1036     /* Update netlist indexes */
1037     DVDMviovec( p_netlist, i_read_blocks, pp_data );
1038
1039     /* Update global position */
1040     p_dvd->i_sector += i_read_blocks;
1041
1042     i_packet = 0;
1043
1044     /* Read headers to compute payload length */
1045     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
1046     {
1047         if( p_dvd->b_encrypted )
1048         {
1049             CSSDescrambleSector( p_dvd->p_css->pi_title_key,
1050                                  p_vec[i_iovec].iov_base );
1051             ((u8*)(p_vec[i_iovec].iov_base))[0x14] &= 0x8F;
1052         }
1053
1054         i_pos = 0;
1055
1056         while( i_pos < p_netlist->i_buffer_size )
1057         {
1058             pi_cur = (u8*)(p_vec[i_iovec].iov_base + i_pos);
1059
1060             /*default header */
1061             if( U32_AT( pi_cur ) != 0x1BA )
1062             {
1063                 /* That's the case for all packets, except pack header. */
1064                 i_packet_size = U16_AT( pi_cur + 4 );
1065                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
1066             }
1067             else
1068             {
1069                 /* Pack header. */
1070                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
1071                 {
1072                     /* MPEG-2 */
1073                     i_packet_size = 8;
1074                 }
1075                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
1076                 {
1077                     /* MPEG-1 */
1078                     i_packet_size = 6;
1079                 }
1080                 else
1081                 {
1082                     intf_ErrMsg( "Unable to determine stream type" );
1083                     return( -1 );
1084                 }
1085
1086                 pp_packets[i_packet] = pp_data[i_iovec];
1087
1088             }
1089
1090             (*pp_data[i_iovec]->pi_refcount)++;
1091
1092             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
1093
1094             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
1095
1096             pp_packets[i_packet]->p_payload_start =
1097                     pp_packets[i_packet]->p_buffer + i_pos;
1098
1099             pp_packets[i_packet]->p_payload_end =
1100                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
1101
1102             pp_packets[i_packet]->p_next = NULL;
1103             pp_packets[i_packet]->b_discard_payload = 0;
1104
1105             i_packet++;
1106             i_pos += i_packet_size + 6;
1107         }
1108     }
1109
1110     pp_packets[i_packet] = NULL;
1111
1112     vlc_mutex_lock( &p_input->stream.stream_lock );
1113
1114     p_input->stream.p_selected_area->i_tell += i_read_bytes;
1115     b_eof = !( p_input->stream.p_selected_area->i_tell < p_dvd->i_size );
1116
1117     vlc_mutex_unlock( &p_input->stream.stream_lock );
1118
1119     if( ( i_read_blocks == i_block_once ) && ( !b_eof ) )
1120     {
1121         return 0;
1122     }
1123     else
1124     {
1125         return 1;
1126     }
1127 }
1128
1129 /*****************************************************************************
1130  * DVDRewind : reads a stream backward
1131  *****************************************************************************/
1132 static int DVDRewind( input_thread_t * p_input )
1133 {
1134     return( -1 );
1135 }
1136
1137 /*****************************************************************************
1138  * DVDSeek : Goes to a given position on the stream ; this one is used by the
1139  * input and translate chronological position from input to logical postion
1140  * on the device
1141  * ---
1142  * The lock should be taken before calling this function.
1143  *****************************************************************************/
1144 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1145 {
1146     thread_dvd_data_t *     p_dvd;
1147     off_t                   i_pos;
1148     int                     i_prg_cell;
1149     int                     i_cell;
1150     int                     i_chapter;
1151     int                     i_angle;
1152
1153     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1154
1155     /* we have to take care of offset of beginning of title */
1156     i_pos = i_off + p_input->stream.p_selected_area->i_start
1157                   - p_dvd->i_title_start;
1158
1159     /* update navigation data */
1160     p_dvd->i_sector = i_pos >> 11;
1161
1162     i_prg_cell = 0;
1163     i_chapter = 1;
1164
1165     /* parse vobu address map to find program cell */
1166     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1167     {
1168         i_prg_cell++;
1169     }
1170
1171     p_dvd->i_prg_cell = i_prg_cell;
1172
1173     if( DVDChooseAngle( p_dvd ) < 0 )
1174     {
1175         p_input->b_error = 1;
1176         return;
1177     }
1178
1179     p_dvd->i_cell = 0;
1180
1181     /* Find first title cell which is inside program cell */
1182     if( DVDFindCell( p_dvd ) < 0 )
1183     {
1184         /* no following cell : we're at eof */
1185         intf_ErrMsg( "dvd error: cell seeking failed" );
1186         p_input->b_error = 1;
1187         return;
1188     }
1189
1190     i_cell = p_dvd->i_cell;
1191
1192 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1193     /* parse cell address map to find title cell containing sector */
1194     while( cell.i_end_sector < p_dvd->i_sector )
1195     {
1196         i_cell++;
1197     }
1198
1199     p_dvd->i_cell = i_cell;
1200
1201     /* if we're inside a multi-angle zone, we have to choose i_sector
1202      * in the current angle ; we can't do it all the time since cells
1203      * can be very wide out of such zones */
1204     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1205     {
1206         p_dvd->i_sector = MAX(
1207                 cell.i_start_sector,
1208                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1209     }
1210
1211     p_dvd->i_end_sector = MIN(
1212             cell.i_end_sector,
1213             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1214 #undef cell
1215     /* update chapter */
1216     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1217     {
1218         i_angle = p_dvd->i_angle - 1;
1219     }
1220     else
1221     {
1222         i_angle = 0;
1223     }
1224     while( title.chapter_map.pi_start_cell[i_chapter-1] <=
1225            ( p_dvd->i_prg_cell - i_angle ) )
1226     {
1227         i_chapter++;
1228     }
1229
1230     p_dvd->i_chapter = i_chapter;
1231     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1232
1233     p_input->stream.p_selected_area->i_tell =
1234                 lseek( p_dvd->i_fd, p_dvd->i_title_start +
1235                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET ) -
1236                 p_input->stream.p_selected_area->i_start;
1237 /*
1238     intf_WarnMsg( 1, "Program Cell: %d Cell: %d Chapter: %d",
1239                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1240 */
1241
1242     return;
1243 }
1244
1245 #define cell  p_dvd->p_ifo->vts.cell_inf
1246
1247 /*****************************************************************************
1248  * DVDFindCell: adjust the title cell index with the program cell
1249  *****************************************************************************/
1250 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1251 {
1252     int                 i_cell;
1253     int                 i_index;
1254
1255     i_cell = p_dvd->i_cell;
1256     i_index = p_dvd->i_prg_cell;
1257
1258     if( i_cell >= cell.i_cell_nb )
1259     {
1260         return -1;
1261     }
1262
1263     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1264                    cell.p_cell_map[i_cell].i_vob_id ) ||
1265       ( title.p_cell_pos[i_index].i_cell_id !=
1266                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1267            ( i_cell < cell.i_cell_nb - 1 ) )
1268     {
1269         i_cell++;
1270     }
1271
1272 /*
1273 intf_WarnMsg( 1, "FindCell: i_cell %d i_index %d found %d nb %d",
1274                     p_dvd->i_cell,
1275                     p_dvd->i_prg_cell,
1276                     i_cell,
1277                     cell.i_cell_nb );
1278 */
1279
1280     p_dvd->i_cell = i_cell;
1281
1282     return 0;
1283 }
1284
1285 #undef cell
1286
1287 /*****************************************************************************
1288  * DVDFindSector: find cell index in adress map from index in
1289  * information table program map and give corresponding sectors.
1290  *****************************************************************************/
1291 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1292 {
1293
1294     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1295     {
1296         p_dvd->i_prg_cell++;
1297
1298         if( DVDChooseAngle( p_dvd ) < 0 )
1299         {
1300             return -1;
1301         }
1302     }
1303
1304     if( DVDFindCell( p_dvd ) < 0 )
1305     {
1306         intf_ErrMsg( "dvd error: can't find sector" );
1307         return -1;
1308     }
1309
1310     /* Find start and end sectors of new cell */
1311     p_dvd->i_sector = MAX(
1312          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1313          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1314     p_dvd->i_end_sector = MIN(
1315          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1316          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1317
1318 /*
1319     intf_WarnMsg( 1, "cell: %d sector1: 0x%x end1: 0x%x\n"
1320                    "index: %d sector2: 0x%x end2: 0x%x\n"
1321                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1322         p_dvd->i_cell,
1323         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1324         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1325         p_dvd->i_prg_cell,
1326         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1327         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1328         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1329         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1330         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1331 */
1332
1333     return 0;
1334 }
1335
1336 /*****************************************************************************
1337  * DVDChapterSelect: find the cell corresponding to requested chapter
1338  *****************************************************************************/
1339 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1340 {
1341
1342     /* Find cell index in Program chain for current chapter */
1343     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1344     p_dvd->i_cell = 0;
1345     p_dvd->i_sector = 0;
1346
1347     DVDChooseAngle( p_dvd );
1348
1349     /* Search for cell_index in cell adress_table and initialize start sector */
1350     if( DVDFindSector( p_dvd ) < 0 )
1351     {
1352         intf_ErrMsg( "dvd error: can't select chapter" );
1353         return -1;
1354     }
1355
1356     /* start is : beginning of vts vobs + offset to vob x */
1357     p_dvd->i_start = p_dvd->i_title_start +
1358                      DVD_LB_SIZE * (off_t)( p_dvd->i_sector );
1359
1360     /* Position the fd pointer on the right address */
1361     p_dvd->i_start = lseek( p_dvd->i_fd, p_dvd->i_start, SEEK_SET );
1362
1363     p_dvd->i_chapter = i_chapter;
1364     return 0;
1365 }
1366
1367 /*****************************************************************************
1368  * DVDChooseAngle: select the cell corresponding to the selected angle
1369  *****************************************************************************/
1370 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1371 {
1372     /* basic handling of angles */
1373     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1374                     >> 12 ) )
1375     {
1376         /* we enter a muli-angle section */
1377         case 0x5:
1378             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1379             p_dvd->i_angle_cell = 0;
1380 //            intf_WarnMsg( 1, "dvd info: choosing angle %d", p_dvd->i_angle );
1381             break;
1382         /* we exit a multi-angle section */
1383         case 0x9:
1384         case 0xd:
1385             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1386             break;
1387     }
1388
1389     return 0;
1390 }
1391
1392 #undef title