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 1.36 2001/04/02 23:30:41 sam 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-css
  39 #else /* HAVE_CSS */
  40 #define MODULE_NAME dvd-nocss
  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 static int  DVDProbe    ( probedata_t *p_data );
 246 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 247 static void DVDInit     ( struct input_thread_s * );
 248 static void DVDEnd      ( struct input_thread_s * );
 249 static void DVDSeek     ( struct input_thread_s *, off_t );
 250 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 251 static int  DVDRewind   ( struct input_thread_s * );
 252
 253 /*****************************************************************************
 254  * Functions exported as capabilities. They are declared as static so that
 255  * we don't pollute the namespace too much.
 256  *****************************************************************************/
 257 void _M( input_getfunctions )( function_list_t * p_function_list )
 258 {
 259 #define input p_function_list->functions.input
 260     p_function_list->pf_probe = DVDProbe;
 261     input.pf_init             = DVDInit;
 262     input.pf_open             = input_FileOpen;
 263     input.pf_close            = input_FileClose;
 264     input.pf_end              = DVDEnd;
 265     input.pf_read             = DVDRead;
 266     input.pf_set_area         = DVDSetArea;
 267     input.pf_demux            = input_DemuxPS;
 268     input.pf_new_packet       = DVDNewPacket;
 269     input.pf_new_pes          = DVDNewPES;
 270     input.pf_delete_packet    = DVDDeletePacket;
 271     input.pf_delete_pes       = DVDDeletePES;
 272     input.pf_rewind           = DVDRewind;
 273     input.pf_seek             = DVDSeek;
 274 #undef input
 275 }
 276
 277 /*
 278  * Local tools to decode some data in ifo
 279  */
 280
 281 /*****************************************************************************
 282  * Language: gives the long language name from the two-letters ISO-639 code
 283  *****************************************************************************/
 284 static char * Language( u16 i_code )
 285 {
 286     int     i = 0;
 287
 288     while( memcmp( lang_tbl[i].p_code, &i_code, 2 ) &&
 289            lang_tbl[i].p_lang_long[0] )
 290     {
 291         i++;
 292     }
 293
 294     return lang_tbl[i].p_lang_long;
 295 }
 296
 297 /*
 298  * Data reading functions
 299  */
 300
 301 /*****************************************************************************
 302  * DVDProbe: verifies that the stream is a PS stream
 303  *****************************************************************************/
 304 static int DVDProbe( probedata_t *p_data )
 305 {
 306     input_thread_t * p_input = (input_thread_t *)p_data;
 307
 308     char * psz_name = p_input->p_source;
 309     int i_handle;
 310     int i_score = 5;
 311
 312     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 313     {
 314 #ifdef HAVE_CSS
 315         return( 999 );
 316 #else /* HAVE_CSS */
 317         return( 998 );
 318 #endif /* HAVE_CSS */
 319     }
 320
 321     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 322     {
 323         /* If the user specified "dvd:" then it's probably a DVD */
 324 #ifdef HAVE_CSS
 325         i_score = 100;
 326 #else /* HAVE_CSS */
 327         i_score = 90;
 328 #endif /* HAVE_CSS */
 329         psz_name += 4;
 330     }
 331
 332     i_handle = open( psz_name, 0 );
 333     if( i_handle == -1 )
 334     {
 335         return( 0 );
 336     }
 337     close( i_handle );
 338
 339     return( i_score );
 340 }
 341
 342 /*****************************************************************************
 343  * DVDFindCell: adjust the title cell index with the program cell
 344  *****************************************************************************/
 345 static int DVDFindCell( thread_dvd_data_t * p_dvd )
 346 {
 347     int                 i_cell;
 348     int                 i_index;
 349
 350 #define title \
 351         p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
 352 #define cell  p_dvd->p_ifo->vts.cell_inf
 353
 354     i_cell = p_dvd->i_cell;
 355     i_index = p_dvd->i_prg_cell;
 356
 357     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
 358                    cell.p_cell_map[i_cell].i_vob_id ) ||
 359       ( title.p_cell_pos[i_index].i_cell_id !=
 360                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
 361            ( i_cell < cell.i_cell_nb ) )
 362     {
 363         i_cell++;
 364     }
 365
 366     if( i_cell == cell.i_cell_nb )
 367     {
 368         return -1;
 369     }
 370     else
 371     {
 372         p_dvd->i_cell = i_cell;
 373         return 0;
 374     }
 375 #undef title
 376 #undef cell
 377 }
 378
 379 /*****************************************************************************
 380  * DVDFindSector: find cell index in adress map from index in
 381  * information table program map and give corresponding sectors.
 382  *****************************************************************************/
 383 static int DVDFindSector( thread_dvd_data_t * p_dvd )
 384 {
 385 #define title \
 386         p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
 387
 388     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
 389     {
 390         p_dvd->i_prg_cell++;
 391     }
 392
 393     if( DVDFindCell( p_dvd ) < 0 )
 394     {
 395         return -1;
 396     }
 397
 398     /* Find start and end sectors of new cell */
 399     p_dvd->i_sector = MAX(
 400          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
 401          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
 402     p_dvd->i_end_sector = MIN(
 403          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
 404          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
 405
 406 //intf_WarnMsg( 3, "cell: %d sector1: 0x%x end1: 0x%x\nindex: %d sector2: 0x%x end2: 0x%x", p_dvd->i_cell, p_dvd->p_ifo->p_vts->c_adt.p_cell_inf[p_dvd->i_cell].i_ssector, p_dvd->p_ifo->p_vts->c_adt.p_cell_inf[p_dvd->i_cell].i_esector, p_dvd->i_prg_cell, p_pgc->p_cell_play_inf[p_dvd->i_prg_cell].i_entry_sector, p_pgc->p_cell_play_inf[p_dvd->i_prg_cell].i_lsector );
 407 #undef title
 408
 409     return 0;
 410 }
 411
 412 /*****************************************************************************
 413  * DVDChapterSelect: find the cell corresponding to requested chapter
 414  * When called to find chapter 1, also sets title size and end.
 415  *****************************************************************************/
 416 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
 417 {
 418 #define title \
 419         p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
 420
 421     /* Find cell index in Program chain for current chapter */
 422     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
 423     p_dvd->i_cell = 0;
 424
 425     /* Search for cell_index in cell adress_table and initialize start sector */
 426     DVDFindSector( p_dvd );
 427
 428     /* start is : beginning of vts vobs + offset to vob x */
 429     p_dvd->i_start = p_dvd->i_title_start +
 430                      DVD_LB_SIZE * (off_t)( p_dvd->i_sector );
 431
 432     /* Position the fd pointer on the right address */
 433     p_dvd->i_start = lseek( p_dvd->i_fd, p_dvd->i_start, SEEK_SET );
 434
 435     p_dvd->i_chapter = i_chapter;
 436 #undef title
 437     return 0;
 438 }
 439
 440 /*****************************************************************************
 441  * DVDSetArea: initialize input data for title x, chapter y.
 442  * It should be called for each user navigation request, and to change
 443  * audio or sub-picture streams.
 444  * ---
 445  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 446  * i_audio, i_spu start from 1 ; 0 means off.
 447  * A negative value for an argument means it does not change
 448  *****************************************************************************/
 449 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 450 {
 451     thread_dvd_data_t *  p_dvd;
 452     es_descriptor_t *    p_es;
 453     int                  i_audio;
 454     int                  i_spu;
 455     u16                  i_id;
 456     u8                   i_ac3;
 457     u8                   i_mpeg;
 458     u8                   i_sub_pic;
 459     u8                   i;
 460     boolean_t            b_last;
 461
 462     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 463
 464     vlc_mutex_lock( &p_input->stream.stream_lock );
 465
 466     if( p_area != p_input->stream.p_selected_area )
 467     {
 468
 469         /*
 470          *  We have to load all title information
 471          */
 472         /* Change the default area */
 473         p_input->stream.p_selected_area =
 474                     p_input->stream.pp_areas[p_area->i_id];
 475
 476         /* title number: it is not vts nb! */
 477         p_dvd->i_title = p_area->i_id;
 478         p_dvd->p_ifo->i_title = p_dvd->i_title;
 479
 480         /* ifo vts */
 481         IfoTitleSet( p_dvd->p_ifo );
 482         intf_WarnMsg( 2, "ifo info: vts initialized" );
 483
 484 #define vmg p_dvd->p_ifo->vmg
 485 #define vts p_dvd->p_ifo->vts
 486         /* title position inside the selected vts */
 487         p_dvd->i_vts_title =
 488                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 489         p_dvd->i_program_chain =
 490           vts.title_inf.p_title_start[p_dvd->i_vts_title-1].i_program_chain_num;
 491
 492         /* css title key for current vts */
 493         if( p_dvd->b_encrypted )
 494         {
 495             p_dvd->p_css->i_title =
 496                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_set_num;
 497             p_dvd->p_css->i_title_pos =
 498                     vts.i_pos +
 499                     vts.manager_inf.i_title_vob_start_sector * DVD_LB_SIZE;
 500             CSSGetKey( p_dvd->p_css );
 501             intf_WarnMsg( 2, "css info: vts key initialized" );
 502         }
 503
 504         /*
 505          * Set selected title start and size
 506          */
 507
 508         /* title set offset */
 509         p_dvd->i_title_start = vts.i_pos + DVD_LB_SIZE *
 510                       (off_t)( vts.manager_inf.i_title_vob_start_sector );
 511
 512         /* last video cell */
 513         p_dvd->i_cell = 0;
 514         p_dvd->i_prg_cell = -1 +
 515             vts.title_unit.p_title[p_dvd->i_program_chain-1].title.i_cell_nb;
 516         DVDFindCell( p_dvd );
 517
 518         /* temporary hack to fix size in some dvds */
 519         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 520         {
 521             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 522         }
 523
 524         p_dvd->i_sector = 0;
 525         p_dvd->i_size = DVD_LB_SIZE *
 526           (off_t)( vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 527
 528         DVDChapterSelect( p_dvd, 1 );
 529
 530         p_dvd->i_size -= (off_t)( p_dvd->i_sector + 1 ) *DVD_LB_SIZE;
 531
 532         intf_WarnMsg( 2, "dvd info: title: %d", p_dvd->i_title );
 533         intf_WarnMsg( 2, "dvd info: vobstart at: %lld", p_dvd->i_start );
 534         intf_WarnMsg( 2, "dvd info: stream size: %lld", p_dvd->i_size );
 535         intf_WarnMsg( 2, "dvd info: number of chapters: %d",
 536                    vmg.title_inf.p_attr[p_dvd->i_title-1].i_chapter_nb );
 537
 538         /* Area definition */
 539         p_input->stream.p_selected_area->i_start = p_dvd->i_start;
 540         p_input->stream.p_selected_area->i_size = p_dvd->i_size;
 541
 542         /*
 543          * Destroy obsolete ES by reinitializing program 0
 544          * and find all ES in title with ifo data
 545          */
 546         if( p_input->stream.pp_programs != NULL )
 547         {
 548             /* We don't use input_EndStream here since
 549              * we keep area structures */
 550
 551             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 552             {
 553                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 554             }
 555
 556             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 557
 558             p_input->stream.pp_selected_es = NULL;
 559             p_input->stream.i_selected_es_number = 0;
 560         }
 561
 562         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 563
 564         p_es = NULL;
 565
 566         /* ES 0 -> video MPEG2 */
 567         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 568         p_es->i_stream_id = 0xe0;
 569         p_es->i_type = MPEG2_VIDEO_ES;
 570         input_SelectES( p_input, p_es );
 571         intf_WarnMsg( 1, "dvd info: video MPEG2 stream" );
 572
 573         /* Audio ES, in the order they appear in .ifo */
 574
 575         i_ac3 = 0x7f;
 576         i_mpeg = 0xc0;
 577
 578         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 579         {
 580
 581 #ifdef DEBUG
 582         intf_DbgMsg( "Audio %d: %x %x %x %x %x %x %x %x %x %x %x %x\n", i,
 583             vts.manager_inf.p_audio_attr[i-1].i_num_channels,
 584             vts.manager_inf.p_audio_attr[i-1].i_coding_mode,
 585             vts.manager_inf.p_audio_attr[i-1].i_multichannel_extension,
 586             vts.manager_inf.p_audio_attr[i-1].i_type,
 587             vts.manager_inf.p_audio_attr[i-1].i_appl_mode,
 588             vts.manager_inf.p_audio_attr[i-1].i_foo,
 589             vts.manager_inf.p_audio_attr[i-1].i_bar,
 590             vts.manager_inf.p_audio_attr[i-1].i_appl_mode,
 591             vts.manager_inf.p_audio_attr[i-1].i_quantization,
 592             vts.manager_inf.p_audio_attr[i-1].i_sample_freq,
 593             vts.manager_inf.p_audio_attr[i-1].i_lang_code,
 594             vts.manager_inf.p_audio_attr[i-1].i_caption );
 595 #endif
 596
 597             switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 598             {
 599             case 0x00:              /* AC3 */
 600                 i_id = ( ( i_ac3 + i ) << 8 ) | 0xbd;
 601                 p_es = input_AddES( p_input,
 602                                     p_input->stream.pp_programs[0], i_id, 0 );
 603                 p_es->i_stream_id = 0xbd;
 604                 p_es->i_type = AC3_AUDIO_ES;
 605                 p_es->b_audio = 1;
 606                 strcpy( p_es->psz_desc, Language( hton16(
 607                     vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 608
 609                 intf_WarnMsg( 1, "dvd info: audio stream %d %s\t(0x%x)",
 610                               i, p_es->psz_desc, i_id );
 611
 612                 break;
 613             case 0x02:
 614             case 0x03:              /* MPEG audio */
 615                 i_id = 0xbf + i;
 616                 p_es = input_AddES( p_input,
 617                                     p_input->stream.pp_programs[0], i_id, 0 );
 618                 p_es->i_stream_id = i_id;
 619                 p_es->i_type = MPEG2_AUDIO_ES;
 620                 p_es->b_audio = 1;
 621                 strcpy( p_es->psz_desc, Language( hton16(
 622                     vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 623
 624                 intf_WarnMsg( 1, "dvd info: audio stream %d %s\t(0x%x)",
 625                               i, p_es->psz_desc, i_id );
 626
 627                 break;
 628             case 0x04:              /* LPCM */
 629                 i_id = 0;
 630                 intf_ErrMsg( "dvd warning: LPCM audio not handled yet" );
 631                 break;
 632             case 0x06:              /* DTS */
 633                 i_id = 0;
 634                 i_ac3--;
 635                 intf_ErrMsg( "dvd warning: DTS audio not handled yet" );
 636                 break;
 637             default:
 638                 i_id = 0;
 639                 intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 640                          vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 641             }
 642
 643         }
 644
 645         /* Sub Picture ES */
 646
 647         b_last = 0;
 648         i_sub_pic = 0x20;
 649         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 650         {
 651             if( !b_last )
 652             {
 653                 i_id = ( i_sub_pic++ << 8 ) | 0xbd;
 654                 p_es = input_AddES( p_input,
 655                                     p_input->stream.pp_programs[0], i_id, 0 );
 656                 p_es->i_stream_id = 0xbd;
 657                 p_es->i_type = DVD_SPU_ES;
 658                 p_es->b_spu = 1;
 659                 strcpy( p_es->psz_desc, Language( hton16(
 660                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 661                 intf_WarnMsg( 1, "dvd info: spu stream %d %s\t(0x%x)",
 662                               i, p_es->psz_desc, i_id );
 663
 664                 /* The before the last spu has a 0x0 prefix */
 665                 b_last =
 666                     ( vts.manager_inf.p_spu_attr[i].i_prefix == 0 );
 667             }
 668         }
 669
 670         /* For audio: first one if none or a not existing one specified */
 671         i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 672         if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 673         {
 674             main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 675             i_audio = 1;
 676         }
 677         if( i_audio > 0 )
 678         {
 679             input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 680         }
 681
 682         /* for spu, default is none */
 683         i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 684         if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 685         {
 686             main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 687             i_spu = 0;
 688         }
 689         if( i_spu > 0 )
 690         {
 691             i_spu += vts.manager_inf.i_audio_nb;
 692             input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 693         }
 694     } // i_title >= 0
 695     else
 696     {
 697         p_area = p_input->stream.p_selected_area;
 698     }
 699
 700     /*
 701      * Chapter selection
 702      */
 703
 704     if( ( p_area->i_part > 0 ) &&
 705         ( p_area->i_part <= p_area->i_part_nb ) )
 706     {
 707         DVDChapterSelect( p_dvd, p_area->i_part );
 708
 709         p_input->stream.p_selected_area->i_tell = p_dvd->i_start -
 710                                                   p_area->i_start;
 711         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 712
 713         intf_WarnMsg( 2, "dvd info: chapter %d start at: %lld",
 714                                     p_area->i_part, p_area->i_tell );
 715     }
 716
 717     /* No PSM to read in DVD mode, we already have all information */
 718     p_input->stream.pp_programs[0]->b_is_ok = 1;
 719     p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 720
 721     vlc_mutex_unlock( &p_input->stream.stream_lock );
 722 #undef vts
 723 #undef vmg
 724     return 0;
 725 }
 726
 727 /*****************************************************************************
 728  * DVDInit: initializes DVD structures
 729  *****************************************************************************/
 730 static void DVDInit( input_thread_t * p_input )
 731 {
 732     thread_dvd_data_t *  p_dvd;
 733     int                  i_title;
 734     int                  i_chapter;
 735     int                  i;
 736
 737     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 738     if( p_dvd == NULL )
 739     {
 740         intf_ErrMsg( "Out of memory" );
 741         p_input->b_error = 1;
 742         return;
 743     }
 744
 745     p_input->p_plugin_data = (void *)p_dvd;
 746     p_input->p_method_data = NULL;
 747
 748     p_dvd->i_fd = p_input->i_handle;
 749
 750     p_dvd->i_block_once = 32;
 751     p_input->i_read_once = 128;
 752
 753     i = CSSTest( p_input->i_handle );
 754
 755     if( i < 0 )
 756     {
 757         intf_ErrMsg( "css error: could not get copyright bit" );
 758         free( p_dvd );
 759         p_input->b_error = 1;
 760         return;
 761     }
 762
 763     p_dvd->b_encrypted = i;
 764
 765     lseek( p_input->i_handle, 0, SEEK_SET );
 766
 767     /* Reading structures initialisation */
 768     p_input->p_method_data =
 769         DVDNetlistInit( 8192, 16384, 2048, DVD_LB_SIZE, p_dvd->i_block_once );
 770     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 771
 772     /* Ifo initialisation */
 773     if( IfoInit( &p_dvd->p_ifo, p_input->i_handle ) < 0 )
 774     {
 775         intf_ErrMsg( "ifo error: fatal failure" );
 776         free( p_dvd );
 777         p_input->b_error = 1;
 778         return;
 779     }
 780
 781     /* CSS initialisation */
 782     if( p_dvd->b_encrypted )
 783     {
 784         p_dvd->p_css = malloc( sizeof(css_t) );
 785         if( p_dvd->p_css == NULL )
 786         {
 787             intf_ErrMsg( "css error: couldn't create CSS structure" );
 788             free( p_dvd );
 789             p_input->b_error = 1;
 790             return;
 791         }
 792
 793         p_dvd->p_css->i_fd = p_input->i_handle;
 794         p_dvd->p_css->i_agid = 0;
 795
 796         if( CSSInit( p_dvd->p_css ) )
 797         {
 798             intf_ErrMsg( "css error: fatal failure" );
 799             free( p_dvd->p_css );
 800             free( p_dvd );
 801             p_input->b_error = 1;
 802             return;
 803         }
 804
 805         intf_WarnMsg( 2, "css info: initialized" );
 806     }
 807
 808     /* Initialize ES structures */
 809     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 810
 811     /* Set stream and area data */
 812     vlc_mutex_lock( &p_input->stream.stream_lock );
 813
 814 #define title_inf p_dvd->p_ifo->vmg.title_inf
 815     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 816
 817 #define area p_input->stream.pp_areas
 818     /* We start from 1 here since area 0 is reserved for video_ts.vob */
 819     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 820     {
 821         input_AddArea( p_input );
 822
 823         /* Titles are Program Chains */
 824         area[i]->i_id = i;
 825
 826         /* Absolute start offset and size
 827          * We can only set that with vts ifo, so we do it during the
 828          * first call to DVDSetArea */
 829         area[i]->i_start = 0;
 830         area[i]->i_size = 0;
 831
 832         /* Number of chapters */
 833         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 834         area[i]->i_part = 1;
 835
 836         /* Offset to vts_i_0.ifo */
 837         area[i]->i_plugin_data = p_dvd->p_ifo->i_off +
 838                        ( title_inf.p_attr[i-1].i_start_sector * DVD_LB_SIZE );
 839     }
 840 #undef area
 841
 842     vlc_mutex_unlock( &p_input->stream.stream_lock );
 843
 844     /* Get requested title - if none try the first title */
 845     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 846     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 847     {
 848         i_title = 1;
 849     }
 850 #undef title_inf
 851     /* Get requested chapter - if none defaults to first one */
 852     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 853     if( i_chapter <= 0 )
 854     {
 855         i_chapter = 1;
 856     }
 857
 858     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 859
 860     /* set title, chapter, audio and subpic */
 861     DVDSetArea( p_input, p_input->stream.pp_areas[i_title] );
 862
 863     return;
 864 }
 865
 866 /*****************************************************************************
 867  * DVDEnd: frees unused data
 868  *****************************************************************************/
 869 static void DVDEnd( input_thread_t * p_input )
 870 {
 871     thread_dvd_data_t *     p_dvd;
 872     dvd_netlist_t *         p_netlist;
 873
 874     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 875     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 876
 877     if( p_dvd->b_encrypted )
 878     {
 879         CSSEnd( p_dvd->p_css );
 880         free( p_dvd->p_css );
 881     }
 882
 883     IfoEnd( p_dvd->p_ifo );
 884     free( p_dvd );
 885     DVDNetlistEnd( p_netlist );
 886 }
 887
 888 /*****************************************************************************
 889  * DVDRead: reads data packets into the netlist.
 890  *****************************************************************************
 891  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 892  * EOF.
 893  *****************************************************************************/
 894 static int DVDRead( input_thread_t * p_input,
 895                     data_packet_t ** pp_packets )
 896 {
 897     thread_dvd_data_t *     p_dvd;
 898     dvd_netlist_t *         p_netlist;
 899     struct iovec *          p_vec;
 900     struct data_packet_s *  pp_data[p_input->i_read_once];
 901     u8 *                    pi_cur;
 902     int                     i_block_once;
 903     int                     i_packet_size;
 904     int                     i_iovec;
 905     int                     i_packet;
 906     int                     i_pos;
 907     int                     i_read_bytes;
 908     int                     i_read_blocks;
 909     off_t                   i_off;
 910     boolean_t               b_eof;
 911
 912     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 913     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 914 #define title \
 915     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
 916
 917     /* Get an iovec pointer */
 918     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 919     {
 920         intf_ErrMsg( "DVD: read error" );
 921         return -1;
 922     }
 923
 924     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 925
 926     /* Get the position of the next cell if we're at cell end */
 927     if( i_block_once <= 0 )
 928     {
 929         p_dvd->i_cell++;
 930
 931         /* Find cell index in adress map */
 932         if( DVDFindSector( p_dvd ) < 0 )
 933         {
 934             pp_packets[0] = NULL;
 935             intf_ErrMsg( "dvd error: can't find next cell" );
 936             return 1;
 937         }
 938
 939         /* Position the fd pointer on the right address */
 940         i_off = lseek( p_dvd->i_fd,
 941                        p_dvd->i_title_start +
 942                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET );
 943
 944         /* update chapter : it will be easier when we have navigation
 945          * ES support */
 946         if( title.chapter_map.pi_start_cell[p_dvd->i_chapter-1] <=
 947             p_dvd->i_prg_cell )
 948         {
 949             p_dvd->i_chapter++;
 950         }
 951
 952         vlc_mutex_lock( &p_input->stream.stream_lock );
 953
 954         p_input->stream.p_selected_area->i_tell = i_off -
 955                                     p_input->stream.p_selected_area->i_start;
 956         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 957
 958         /* the synchro has to be reinitialized when we change cell */
 959         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 960
 961         vlc_mutex_unlock( &p_input->stream.stream_lock );
 962
 963         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 964     }
 965
 966     /* the number of blocks read is the maw between the requested
 967      * value and the leaving block in the cell */
 968     if( i_block_once > p_dvd->i_block_once )
 969     {
 970         i_block_once = p_dvd->i_block_once;
 971     }
 972 //intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 973
 974     p_netlist->i_read_once = i_block_once;
 975
 976     /* Reads from DVD */
 977     i_read_bytes = readv( p_dvd->i_fd, p_vec, i_block_once );
 978     i_read_blocks = ( i_read_bytes + 0x7ff ) >> 11;
 979
 980     /* Update netlist indexes */
 981     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 982
 983     /* Update global position */
 984     p_dvd->i_sector += i_read_blocks;
 985
 986     i_packet = 0;
 987
 988     /* Read headers to compute payload length */
 989     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 990     {
 991         if( p_dvd->b_encrypted )
 992         {
 993             CSSDescrambleSector( p_dvd->p_css->pi_title_key,
 994                                  p_vec[i_iovec].iov_base );
 995             ((u8*)(p_vec[i_iovec].iov_base))[0x14] &= 0x8F;
 996         }
 997
 998         i_pos = 0;
 999
1000         while( i_pos < p_netlist->i_buffer_size )
1001         {
1002             pi_cur = (u8*)(p_vec[i_iovec].iov_base + i_pos);
1003
1004             /*default header */
1005             if( U32_AT( pi_cur ) != 0x1BA )
1006             {
1007                 /* That's the case for all packets, except pack header. */
1008                 i_packet_size = U16_AT( pi_cur + 4 );
1009                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
1010             }
1011             else
1012             {
1013                 /* Pack header. */
1014                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
1015                 {
1016                     /* MPEG-2 */
1017                     i_packet_size = 8;
1018                 }
1019                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
1020                 {
1021                     /* MPEG-1 */
1022                     i_packet_size = 6;
1023                 }
1024                 else
1025                 {
1026                     intf_ErrMsg( "Unable to determine stream type" );
1027                     return( -1 );
1028                 }
1029
1030                 pp_packets[i_packet] = pp_data[i_iovec];
1031
1032             }
1033
1034             (*pp_data[i_iovec]->pi_refcount)++;
1035
1036             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
1037
1038             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
1039
1040             pp_packets[i_packet]->p_payload_start =
1041                     pp_packets[i_packet]->p_buffer + i_pos;
1042
1043             pp_packets[i_packet]->p_payload_end =
1044                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
1045
1046             pp_packets[i_packet]->p_next = NULL;
1047             pp_packets[i_packet]->b_discard_payload = 0;
1048
1049             i_packet++;
1050             i_pos += i_packet_size + 6;
1051         }
1052     }
1053
1054     pp_packets[i_packet] = NULL;
1055
1056     vlc_mutex_lock( &p_input->stream.stream_lock );
1057
1058     p_input->stream.p_selected_area->i_tell += i_read_bytes;
1059     b_eof = p_input->stream.p_selected_area->i_tell < p_dvd->i_size ? 0 : 1;
1060
1061     vlc_mutex_unlock( &p_input->stream.stream_lock );
1062
1063     if( ( i_read_blocks == i_block_once ) && ( !b_eof ) )
1064     {
1065         return 0;
1066     }
1067     else
1068     {
1069         return 1;
1070     }
1071 #undef title
1072 }
1073
1074
1075 /*****************************************************************************
1076  * DVDRewind : reads a stream backward
1077  *****************************************************************************/
1078 static int DVDRewind( input_thread_t * p_input )
1079 {
1080     return( -1 );
1081 }
1082
1083 /*****************************************************************************
1084  * DVDSeek : Goes to a given position on the stream ; this one is used by the
1085  * input and translate chronological position from input to logical postion
1086  * on the device
1087  * ---
1088  * The lock should be taken before calling this function.
1089  *****************************************************************************/
1090 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1091 {
1092     thread_dvd_data_t *     p_dvd;
1093     off_t                   i_pos;
1094     int                     i_prg_cell;
1095     int                     i_cell;
1096     int                     i_chapter;
1097
1098     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1099 #define title \
1100     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
1101
1102     /* we have to take care of offset of beginning of title */
1103     i_pos = i_off + p_input->stream.p_selected_area->i_start
1104                   - p_dvd->i_title_start;
1105
1106     /* update navigation data */
1107     p_dvd->i_sector = i_pos >> 11;
1108
1109     i_prg_cell = 0;
1110     i_chapter = 1;
1111
1112     /* parse vobu address map to find program cell */
1113     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1114     {
1115         i_prg_cell++;
1116     }
1117
1118     p_dvd->i_prg_cell = i_prg_cell;
1119     p_dvd->i_cell = 0;
1120
1121     /* Find first title cell which is inside program cell */
1122     DVDFindCell( p_dvd );
1123
1124     i_cell = p_dvd->i_cell;
1125 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1126     /* parse cell address map to find title cell containing sector */
1127     while( cell.i_end_sector < p_dvd->i_sector )
1128     {
1129         i_cell++;
1130     }
1131
1132     p_dvd->i_cell = i_cell;
1133
1134     p_dvd->i_end_sector = MIN(
1135             cell.i_end_sector,
1136             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1137
1138     /* update chapter */
1139     while( title.chapter_map.pi_start_cell[i_chapter-1] <= p_dvd->i_prg_cell )
1140     {
1141         i_chapter++;
1142     }
1143
1144     p_dvd->i_chapter = i_chapter;
1145     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1146
1147     p_input->stream.p_selected_area->i_tell =
1148                 lseek( p_dvd->i_fd, p_dvd->i_title_start +
1149                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET ) -
1150                 p_input->stream.p_selected_area->i_start;
1151
1152     intf_WarnMsg( 1, "Program Cell: %d Cell: %d Chapter: %d",
1153                      i_prg_cell, i_cell, p_dvd->i_chapter );
1154
1155     return;
1156 }