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 1.35 2001/04/01 07:31:38 stef Exp $
  14  *
  15  * Author: Stéphane Borel <stef@via.ecp.fr>
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  30  *****************************************************************************/
  31
  32 /*****************************************************************************
  33  * Preamble
  34  *****************************************************************************/
  35 #include "defs.h"
  36
  37 #ifdef HAVE_CSS
  38 #define MODULE_NAME dvd-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  DVDCheckCSS ( struct input_thread_s * );
 247 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 248 static void DVDInit     ( struct input_thread_s * );
 249 static void DVDEnd      ( struct input_thread_s * );
 250 static void DVDSeek     ( struct input_thread_s *, off_t );
 251 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 252 static int  DVDRewind   ( struct input_thread_s * );
 253
 254 /*****************************************************************************
 255  * Functions exported as capabilities. They are declared as static so that
 256  * we don't pollute the namespace too much.
 257  *****************************************************************************/
 258 void _M( input_getfunctions )( function_list_t * p_function_list )
 259 {
 260 #define input p_function_list->functions.input
 261     p_function_list->pf_probe = DVDProbe;
 262     input.pf_init             = DVDInit;
 263     input.pf_open             = input_FileOpen;
 264     input.pf_close            = input_FileClose;
 265     input.pf_end              = DVDEnd;
 266     input.pf_read             = DVDRead;
 267     input.pf_set_area         = DVDSetArea;
 268     input.pf_demux            = input_DemuxPS;
 269     input.pf_new_packet       = DVDNewPacket;
 270     input.pf_new_pes          = DVDNewPES;
 271     input.pf_delete_packet    = DVDDeletePacket;
 272     input.pf_delete_pes       = DVDDeletePES;
 273     input.pf_rewind           = DVDRewind;
 274     input.pf_seek             = DVDSeek;
 275 #undef input
 276 }
 277
 278 /*
 279  * Local tools to decode some data in ifo
 280  */
 281
 282 /*****************************************************************************
 283  * Language: gives the long language name from the two-letters ISO-639 code
 284  *****************************************************************************/
 285 static char * Language( u16 i_code )
 286 {
 287     int     i = 0;
 288
 289     while( memcmp( lang_tbl[i].p_code, &i_code, 2 ) &&
 290            lang_tbl[i].p_lang_long[0] )
 291     {
 292         i++;
 293     }
 294
 295     return lang_tbl[i].p_lang_long;
 296 }
 297
 298 /*
 299  * Data reading functions
 300  */
 301
 302 /*****************************************************************************
 303  * DVDProbe: verifies that the stream is a PS stream
 304  *****************************************************************************/
 305 static int DVDProbe( probedata_t *p_data )
 306 {
 307     input_thread_t * p_input = (input_thread_t *)p_data;
 308
 309     char * psz_name = p_input->p_source;
 310     int i_handle;
 311     int i_score = 5;
 312
 313     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 314     {
 315 #ifdef HAVE_CSS
 316         return( 999 );
 317 #else /* HAVE_CSS */
 318         return( 998 );
 319 #endif /* HAVE_CSS */
 320     }
 321
 322     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 323     {
 324         /* If the user specified "dvd:" then it's probably a DVD */
 325 #ifdef HAVE_CSS
 326         i_score = 100;
 327 #else /* HAVE_CSS */
 328         i_score = 90;
 329 #endif /* HAVE_CSS */
 330         psz_name += 4;
 331     }
 332
 333     i_handle = open( psz_name, 0 );
 334     if( i_handle == -1 )
 335     {
 336         return( 0 );
 337     }
 338     close( i_handle );
 339
 340     return( i_score );
 341 }
 342
 343 /*****************************************************************************
 344  * DVDCheckCSS: check the stream
 345  *****************************************************************************/
 346 static int DVDCheckCSS( input_thread_t * p_input )
 347 {
 348     return CSSTest( p_input->i_handle );
 349 }
 350
 351
 352 /*****************************************************************************
 353  * DVDFindCell: adjust the title cell index with the program cell
 354  *****************************************************************************/
 355 static int DVDFindCell( thread_dvd_data_t * p_dvd )
 356 {
 357     int                 i_cell;
 358     int                 i_index;
 359
 360 #define title \
 361         p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
 362 #define cell  p_dvd->p_ifo->vts.cell_inf
 363
 364     i_cell = p_dvd->i_cell;
 365     i_index = p_dvd->i_prg_cell;
 366
 367     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
 368                    cell.p_cell_map[i_cell].i_vob_id ) ||
 369       ( title.p_cell_pos[i_index].i_cell_id !=
 370                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
 371            ( i_cell < cell.i_cell_nb ) )
 372     {
 373         i_cell++;
 374     }
 375
 376     if( i_cell == cell.i_cell_nb )
 377     {
 378         return -1;
 379     }
 380     else
 381     {
 382         p_dvd->i_cell = i_cell;
 383         return 0;
 384     }
 385 #undef title
 386 #undef cell
 387 }
 388
 389 /*****************************************************************************
 390  * DVDFindSector: find cell index in adress map from index in
 391  * information table program map and give corresponding sectors.
 392  *****************************************************************************/
 393 static int DVDFindSector( thread_dvd_data_t * p_dvd )
 394 {
 395 #define title \
 396         p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
 397
 398     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
 399     {
 400         p_dvd->i_prg_cell++;
 401     }
 402
 403     if( DVDFindCell( p_dvd ) < 0 )
 404     {
 405         return -1;
 406     }
 407
 408     /* Find start and end sectors of new cell */
 409     p_dvd->i_sector = MAX(
 410          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
 411          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
 412     p_dvd->i_end_sector = MIN(
 413          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
 414          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
 415
 416 //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 );
 417 #undef title
 418
 419     return 0;
 420 }
 421
 422 /*****************************************************************************
 423  * DVDChapterSelect: find the cell corresponding to requested chapter
 424  * When called to find chapter 1, also sets title size and end.
 425  *****************************************************************************/
 426 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
 427 {
 428 #define title \
 429         p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
 430
 431     /* Find cell index in Program chain for current chapter */
 432     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
 433     p_dvd->i_cell = 0;
 434
 435     /* Search for cell_index in cell adress_table and initialize start sector */
 436     DVDFindSector( p_dvd );
 437
 438     /* start is : beginning of vts vobs + offset to vob x */
 439     p_dvd->i_start = p_dvd->i_title_start +
 440                      DVD_LB_SIZE * (off_t)( p_dvd->i_sector );
 441
 442     /* Position the fd pointer on the right address */
 443     p_dvd->i_start = lseek( p_dvd->i_fd, p_dvd->i_start, SEEK_SET );
 444
 445     p_dvd->i_chapter = i_chapter;
 446 #undef title
 447     return 0;
 448 }
 449
 450 /*****************************************************************************
 451  * DVDSetArea: initialize input data for title x, chapter y.
 452  * It should be called for each user navigation request, and to change
 453  * audio or sub-picture streams.
 454  * ---
 455  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 456  * i_audio, i_spu start from 1 ; 0 means off.
 457  * A negative value for an argument means it does not change
 458  *****************************************************************************/
 459 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 460 {
 461     thread_dvd_data_t *  p_dvd;
 462     es_descriptor_t *    p_es;
 463     int                  i_audio;
 464     int                  i_spu;
 465     u16                  i_id;
 466     u8                   i_ac3;
 467     u8                   i_mpeg;
 468     u8                   i_sub_pic;
 469     u8                   i;
 470     boolean_t            b_last;
 471
 472     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 473
 474     vlc_mutex_lock( &p_input->stream.stream_lock );
 475
 476     if( p_area != p_input->stream.p_selected_area )
 477     {
 478
 479         /*
 480          *  We have to load all title information
 481          */
 482         /* Change the default area */
 483         p_input->stream.p_selected_area =
 484                     p_input->stream.pp_areas[p_area->i_id];
 485
 486         /* title number: it is not vts nb! */
 487         p_dvd->i_title = p_area->i_id;
 488         p_dvd->p_ifo->i_title = p_dvd->i_title;
 489
 490         /* ifo vts */
 491         IfoTitleSet( p_dvd->p_ifo );
 492         intf_WarnMsg( 2, "ifo info: vts initialized" );
 493
 494 #define vmg p_dvd->p_ifo->vmg
 495 #define vts p_dvd->p_ifo->vts
 496         /* title position inside the selected vts */
 497         p_dvd->i_vts_title =
 498                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 499         p_dvd->i_program_chain =
 500           vts.title_inf.p_title_start[p_dvd->i_vts_title-1].i_program_chain_num;
 501
 502         /* css title key for current vts */
 503         if( p_dvd->b_encrypted )
 504         {
 505             p_dvd->p_css->i_title =
 506                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_set_num;
 507             p_dvd->p_css->i_title_pos =
 508                     vts.i_pos +
 509                     vts.manager_inf.i_title_vob_start_sector * DVD_LB_SIZE;
 510             CSSGetKey( p_dvd->p_css );
 511             intf_WarnMsg( 2, "css info: vts key initialized" );
 512         }
 513
 514         /*
 515          * Set selected title start and size
 516          */
 517
 518         /* title set offset */
 519         p_dvd->i_title_start = vts.i_pos + DVD_LB_SIZE *
 520                       (off_t)( vts.manager_inf.i_title_vob_start_sector );
 521
 522         /* last video cell */
 523         p_dvd->i_cell = 0;
 524         p_dvd->i_prg_cell = -1 +
 525             vts.title_unit.p_title[p_dvd->i_program_chain-1].title.i_cell_nb;
 526         DVDFindCell( p_dvd );
 527
 528         /* temporary hack to fix size in some dvds */
 529         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 530         {
 531             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 532         }
 533
 534         p_dvd->i_sector = 0;
 535         p_dvd->i_size = DVD_LB_SIZE *
 536           (off_t)( vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 537
 538         DVDChapterSelect( p_dvd, 1 );
 539
 540         p_dvd->i_size -= (off_t)( p_dvd->i_sector + 1 ) *DVD_LB_SIZE;
 541
 542         intf_WarnMsg( 2, "dvd info: title: %d", p_dvd->i_title );
 543         intf_WarnMsg( 2, "dvd info: vobstart at: %lld", p_dvd->i_start );
 544         intf_WarnMsg( 2, "dvd info: stream size: %lld", p_dvd->i_size );
 545         intf_WarnMsg( 2, "dvd info: number of chapters: %d",
 546                    vmg.title_inf.p_attr[p_dvd->i_title-1].i_chapter_nb );
 547
 548         /* Area definition */
 549         p_input->stream.p_selected_area->i_start = p_dvd->i_start;
 550         p_input->stream.p_selected_area->i_size = p_dvd->i_size;
 551
 552         /*
 553          * Destroy obsolete ES by reinitializing program 0
 554          * and find all ES in title with ifo data
 555          */
 556         if( p_input->stream.pp_programs != NULL )
 557         {
 558             /* We don't use input_EndStream here since
 559              * we keep area structures */
 560
 561             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 562             {
 563                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 564             }
 565
 566             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 567
 568             p_input->stream.pp_selected_es = NULL;
 569             p_input->stream.i_selected_es_number = 0;
 570         }
 571
 572         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 573
 574         p_es = NULL;
 575
 576         /* ES 0 -> video MPEG2 */
 577         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 578         p_es->i_stream_id = 0xe0;
 579         p_es->i_type = MPEG2_VIDEO_ES;
 580         input_SelectES( p_input, p_es );
 581         intf_WarnMsg( 1, "dvd info: video MPEG2 stream" );
 582
 583         /* Audio ES, in the order they appear in .ifo */
 584
 585         i_ac3 = 0x7f;
 586         i_mpeg = 0xc0;
 587
 588         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 589         {
 590
 591 #ifdef DEBUG
 592         intf_DbgMsg( "Audio %d: %x %x %x %x %x %x %x %x %x %x %x %x\n", i,
 593             vts.manager_inf.p_audio_attr[i-1].i_num_channels,
 594             vts.manager_inf.p_audio_attr[i-1].i_coding_mode,
 595             vts.manager_inf.p_audio_attr[i-1].i_multichannel_extension,
 596             vts.manager_inf.p_audio_attr[i-1].i_type,
 597             vts.manager_inf.p_audio_attr[i-1].i_appl_mode,
 598             vts.manager_inf.p_audio_attr[i-1].i_foo,
 599             vts.manager_inf.p_audio_attr[i-1].i_bar,
 600             vts.manager_inf.p_audio_attr[i-1].i_appl_mode,
 601             vts.manager_inf.p_audio_attr[i-1].i_quantization,
 602             vts.manager_inf.p_audio_attr[i-1].i_sample_freq,
 603             vts.manager_inf.p_audio_attr[i-1].i_lang_code,
 604             vts.manager_inf.p_audio_attr[i-1].i_caption );
 605 #endif
 606
 607             switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 608             {
 609             case 0x00:              /* AC3 */
 610                 i_id = ( ( i_ac3 + i ) << 8 ) | 0xbd;
 611                 p_es = input_AddES( p_input,
 612                                     p_input->stream.pp_programs[0], i_id, 0 );
 613                 p_es->i_stream_id = 0xbd;
 614                 p_es->i_type = AC3_AUDIO_ES;
 615                 p_es->b_audio = 1;
 616                 strcpy( p_es->psz_desc, Language( hton16(
 617                     vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 618
 619                 intf_WarnMsg( 1, "dvd info: audio stream %d %s\t(0x%x)",
 620                               i, p_es->psz_desc, i_id );
 621
 622                 break;
 623             case 0x02:
 624             case 0x03:              /* MPEG audio */
 625                 i_id = 0xbf + i;
 626                 p_es = input_AddES( p_input,
 627                                     p_input->stream.pp_programs[0], i_id, 0 );
 628                 p_es->i_stream_id = i_id;
 629                 p_es->i_type = MPEG2_AUDIO_ES;
 630                 p_es->b_audio = 1;
 631                 strcpy( p_es->psz_desc, Language( hton16(
 632                     vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 633
 634                 intf_WarnMsg( 1, "dvd info: audio stream %d %s\t(0x%x)",
 635                               i, p_es->psz_desc, i_id );
 636
 637                 break;
 638             case 0x04:              /* LPCM */
 639                 i_id = 0;
 640                 intf_ErrMsg( "dvd warning: LPCM audio not handled yet" );
 641                 break;
 642             case 0x06:              /* DTS */
 643                 i_id = 0;
 644                 i_ac3--;
 645                 intf_ErrMsg( "dvd warning: DTS audio not handled yet" );
 646                 break;
 647             default:
 648                 i_id = 0;
 649                 intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 650                          vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 651             }
 652
 653         }
 654
 655         /* Sub Picture ES */
 656
 657         b_last = 0;
 658         i_sub_pic = 0x20;
 659         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 660         {
 661             if( !b_last )
 662             {
 663                 i_id = ( i_sub_pic++ << 8 ) | 0xbd;
 664                 p_es = input_AddES( p_input,
 665                                     p_input->stream.pp_programs[0], i_id, 0 );
 666                 p_es->i_stream_id = 0xbd;
 667                 p_es->i_type = DVD_SPU_ES;
 668                 p_es->b_spu = 1;
 669                 strcpy( p_es->psz_desc, Language( hton16(
 670                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 671                 intf_WarnMsg( 1, "dvd info: spu stream %d %s\t(0x%x)",
 672                               i, p_es->psz_desc, i_id );
 673
 674                 /* The before the last spu has a 0x0 prefix */
 675                 b_last =
 676                     ( vts.manager_inf.p_spu_attr[i].i_prefix == 0 );
 677             }
 678         }
 679
 680         /* For audio: first one if none or a not existing one specified */
 681         i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 682         if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 683         {
 684             main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 685             i_audio = 1;
 686         }
 687         if( i_audio > 0 )
 688         {
 689             input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 690         }
 691
 692         /* for spu, default is none */
 693         i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 694         if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 695         {
 696             main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 697             i_spu = 0;
 698         }
 699         if( i_spu > 0 )
 700         {
 701             i_spu += vts.manager_inf.i_audio_nb;
 702             input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 703         }
 704     } // i_title >= 0
 705     else
 706     {
 707         p_area = p_input->stream.p_selected_area;
 708     }
 709
 710     /*
 711      * Chapter selection
 712      */
 713
 714     if( ( p_area->i_part > 0 ) &&
 715         ( p_area->i_part <= p_area->i_part_nb ) )
 716     {
 717         DVDChapterSelect( p_dvd, p_area->i_part );
 718
 719         p_input->stream.p_selected_area->i_tell = p_dvd->i_start -
 720                                                   p_area->i_start;
 721         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 722
 723         intf_WarnMsg( 2, "dvd info: chapter %d start at: %lld",
 724                                     p_area->i_part, p_area->i_tell );
 725     }
 726
 727     /* No PSM to read in DVD mode, we already have all information */
 728     p_input->stream.pp_programs[0]->b_is_ok = 1;
 729     p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 730
 731     vlc_mutex_unlock( &p_input->stream.stream_lock );
 732 #undef vts
 733 #undef vmg
 734     return 0;
 735 }
 736
 737 /*****************************************************************************
 738  * DVDInit: initializes DVD structures
 739  *****************************************************************************/
 740 static void DVDInit( input_thread_t * p_input )
 741 {
 742     thread_dvd_data_t *  p_dvd;
 743     int                  i_title;
 744     int                  i_chapter;
 745     int                  i;
 746
 747     if( (p_dvd = malloc( sizeof(thread_dvd_data_t) )) == NULL )
 748     {
 749         intf_ErrMsg( "Out of memory" );
 750         p_input->b_error = 1;
 751         return;
 752     }
 753
 754     p_input->p_plugin_data = (void *)p_dvd;
 755     p_input->p_method_data = NULL;
 756
 757     p_dvd->i_fd = p_input->i_handle;
 758
 759     p_dvd->i_block_once = 32;
 760     p_input->i_read_once = 128;
 761
 762     p_dvd->b_encrypted = DVDCheckCSS( p_input );
 763
 764     lseek( p_input->i_handle, 0, SEEK_SET );
 765
 766     /* Reading structures initialisation */
 767     p_input->p_method_data =
 768         DVDNetlistInit( 8192, 16384, 2048, DVD_LB_SIZE, p_dvd->i_block_once );
 769     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 770
 771     /* Ifo initialisation */
 772     if( IfoInit( &p_dvd->p_ifo, p_input->i_handle ) < 0 )
 773     {
 774             intf_ErrMsg( "ifo error: fatal failure" );
 775             free( p_dvd );
 776             p_input->b_error = 1;
 777             return;
 778     }
 779
 780     /* CSS initialisation */
 781     if( p_dvd->b_encrypted )
 782     {
 783         p_dvd->p_css = CSSInit( p_input->i_handle );
 784
 785         if( p_dvd->p_css == NULL )
 786         {
 787             intf_ErrMsg( "css error: fatal failure" );
 788             free( p_dvd );
 789             p_input->b_error = 1;
 790             return;
 791         }
 792
 793         intf_WarnMsg( 2, "css info: initialized" );
 794     }
 795
 796     /* Initialize ES structures */
 797     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 798
 799     /* Set stream and area data */
 800     vlc_mutex_lock( &p_input->stream.stream_lock );
 801
 802 #define title_inf p_dvd->p_ifo->vmg.title_inf
 803     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 804
 805 #define area p_input->stream.pp_areas
 806     /* We start from 1 here since area 0 is reserved for video_ts.vob */
 807     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 808     {
 809         input_AddArea( p_input );
 810
 811         /* Titles are Program Chains */
 812         area[i]->i_id = i;
 813
 814         /* Absolute start offset and size
 815          * We can only set that with vts ifo, so we do it during the
 816          * first call to DVDSetArea */
 817         area[i]->i_start = 0;
 818         area[i]->i_size = 0;
 819
 820         /* Number of chapters */
 821         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 822         area[i]->i_part = 1;
 823
 824         /* Offset to vts_i_0.ifo */
 825         area[i]->i_plugin_data = p_dvd->p_ifo->i_off +
 826                        ( title_inf.p_attr[i-1].i_start_sector * DVD_LB_SIZE );
 827     }
 828 #undef area
 829
 830     vlc_mutex_unlock( &p_input->stream.stream_lock );
 831
 832     /* Get requested title - if none try the first title */
 833     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 834     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 835     {
 836         i_title = 1;
 837     }
 838 #undef title_inf
 839     /* Get requested chapter - if none defaults to first one */
 840     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 841     if( i_chapter <= 0 )
 842     {
 843         i_chapter = 1;
 844     }
 845
 846     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 847
 848     /* set title, chapter, audio and subpic */
 849     DVDSetArea( p_input, p_input->stream.pp_areas[i_title] );
 850
 851     return;
 852 }
 853
 854 /*****************************************************************************
 855  * DVDEnd: frees unused data
 856  *****************************************************************************/
 857 static void DVDEnd( input_thread_t * p_input )
 858 {
 859     thread_dvd_data_t *     p_dvd;
 860     dvd_netlist_t *         p_netlist;
 861
 862     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 863     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 864
 865     if( p_dvd->b_encrypted )
 866     {
 867         CSSEnd( p_dvd->p_css );
 868     }
 869
 870     IfoEnd( p_dvd->p_ifo );
 871     free( p_dvd );
 872     DVDNetlistEnd( p_netlist );
 873 }
 874
 875 /*****************************************************************************
 876  * DVDRead: reads data packets into the netlist.
 877  *****************************************************************************
 878  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 879  * EOF.
 880  *****************************************************************************/
 881 static int DVDRead( input_thread_t * p_input,
 882                     data_packet_t ** pp_packets )
 883 {
 884     thread_dvd_data_t *     p_dvd;
 885     dvd_netlist_t *         p_netlist;
 886     struct iovec *          p_vec;
 887     struct data_packet_s *  pp_data[p_input->i_read_once];
 888     u8 *                    pi_cur;
 889     int                     i_block_once;
 890     int                     i_packet_size;
 891     int                     i_iovec;
 892     int                     i_packet;
 893     int                     i_pos;
 894     int                     i_read_bytes;
 895     int                     i_read_blocks;
 896     off_t                   i_off;
 897     boolean_t               b_eof;
 898
 899     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 900     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 901 #define title \
 902     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
 903
 904     /* Get an iovec pointer */
 905     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 906     {
 907         intf_ErrMsg( "DVD: read error" );
 908         return -1;
 909     }
 910
 911     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 912
 913     /* Get the position of the next cell if we're at cell end */
 914     if( i_block_once <= 0 )
 915     {
 916         p_dvd->i_cell++;
 917
 918         /* Find cell index in adress map */
 919         if( DVDFindSector( p_dvd ) < 0 )
 920         {
 921             pp_packets[0] = NULL;
 922             intf_ErrMsg( "dvd error: can't find next cell" );
 923             return 1;
 924         }
 925
 926         /* Position the fd pointer on the right address */
 927         i_off = lseek( p_dvd->i_fd,
 928                        p_dvd->i_title_start +
 929                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET );
 930
 931         /* update chapter : it will be easier when we have navigation
 932          * ES support */
 933         if( title.chapter_map.pi_start_cell[p_dvd->i_chapter-1] <=
 934             p_dvd->i_prg_cell )
 935         {
 936             p_dvd->i_chapter++;
 937         }
 938
 939         vlc_mutex_lock( &p_input->stream.stream_lock );
 940
 941         p_input->stream.p_selected_area->i_tell = i_off -
 942                                     p_input->stream.p_selected_area->i_start;
 943         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 944
 945         /* the synchro has to be reinitialized when we change cell */
 946         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 947
 948         vlc_mutex_unlock( &p_input->stream.stream_lock );
 949
 950         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 951     }
 952
 953     /* the number of blocks read is the maw between the requested
 954      * value and the leaving block in the cell */
 955     if( i_block_once > p_dvd->i_block_once )
 956     {
 957         i_block_once = p_dvd->i_block_once;
 958     }
 959 //intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 960
 961     p_netlist->i_read_once = i_block_once;
 962
 963     /* Reads from DVD */
 964     i_read_bytes = readv( p_dvd->i_fd, p_vec, i_block_once );
 965     i_read_blocks = ( i_read_bytes + 0x7ff ) >> 11;
 966
 967     /* Update netlist indexes */
 968     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 969
 970     /* Update global position */
 971     p_dvd->i_sector += i_read_blocks;
 972
 973     i_packet = 0;
 974
 975     /* Read headers to compute payload length */
 976     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 977     {
 978         if( p_dvd->b_encrypted )
 979         {
 980             CSSDescrambleSector( p_dvd->p_css->pi_title_key,
 981                                  p_vec[i_iovec].iov_base );
 982             ((u8*)(p_vec[i_iovec].iov_base))[0x14] &= 0x8F;
 983         }
 984
 985         i_pos = 0;
 986
 987         while( i_pos < p_netlist->i_buffer_size )
 988         {
 989             pi_cur = (u8*)(p_vec[i_iovec].iov_base + i_pos);
 990
 991             /*default header */
 992             if( U32_AT( pi_cur ) != 0x1BA )
 993             {
 994                 /* That's the case for all packets, except pack header. */
 995                 i_packet_size = U16_AT( pi_cur + 4 );
 996                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 997             }
 998             else
 999             {
1000                 /* Pack header. */
1001                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
1002                 {
1003                     /* MPEG-2 */
1004                     i_packet_size = 8;
1005                 }
1006                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
1007                 {
1008                     /* MPEG-1 */
1009                     i_packet_size = 6;
1010                 }
1011                 else
1012                 {
1013                     intf_ErrMsg( "Unable to determine stream type" );
1014                     return( -1 );
1015                 }
1016
1017                 pp_packets[i_packet] = pp_data[i_iovec];
1018
1019             }
1020
1021             (*pp_data[i_iovec]->pi_refcount)++;
1022
1023             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
1024
1025             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
1026
1027             pp_packets[i_packet]->p_payload_start =
1028                     pp_packets[i_packet]->p_buffer + i_pos;
1029
1030             pp_packets[i_packet]->p_payload_end =
1031                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
1032
1033             pp_packets[i_packet]->p_next = NULL;
1034             pp_packets[i_packet]->b_discard_payload = 0;
1035
1036             i_packet++;
1037             i_pos += i_packet_size + 6;
1038         }
1039     }
1040
1041     pp_packets[i_packet] = NULL;
1042
1043     vlc_mutex_lock( &p_input->stream.stream_lock );
1044
1045     p_input->stream.p_selected_area->i_tell += i_read_bytes;
1046     b_eof = p_input->stream.p_selected_area->i_tell < p_dvd->i_size ? 0 : 1;
1047
1048     vlc_mutex_unlock( &p_input->stream.stream_lock );
1049
1050     if( ( i_read_blocks == i_block_once ) && ( !b_eof ) )
1051     {
1052         return 0;
1053     }
1054     else
1055     {
1056         return 1;
1057     }
1058 #undef title
1059 }
1060
1061
1062 /*****************************************************************************
1063  * DVDRewind : reads a stream backward
1064  *****************************************************************************/
1065 static int DVDRewind( input_thread_t * p_input )
1066 {
1067     return( -1 );
1068 }
1069
1070 /*****************************************************************************
1071  * DVDSeek : Goes to a given position on the stream ; this one is used by the
1072  * input and translate chronological position from input to logical postion
1073  * on the device
1074  * ---
1075  * The lock should be taken before calling this function.
1076  *****************************************************************************/
1077 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1078 {
1079     thread_dvd_data_t *     p_dvd;
1080     off_t                   i_pos;
1081     int                     i_prg_cell;
1082     int                     i_cell;
1083     int                     i_chapter;
1084
1085     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1086 #define title \
1087     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_program_chain-1].title
1088
1089     /* we have to take care of offset of beginning of title */
1090     i_pos = i_off + p_input->stream.p_selected_area->i_start
1091                   - p_dvd->i_title_start;
1092
1093     /* update navigation data */
1094     p_dvd->i_sector = i_pos >> 11;
1095
1096     i_prg_cell = 0;
1097     i_chapter = 1;
1098
1099     /* parse vobu address map to find program cell */
1100     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1101     {
1102         i_prg_cell++;
1103     }
1104
1105     p_dvd->i_prg_cell = i_prg_cell;
1106     p_dvd->i_cell = 0;
1107
1108     /* Find first title cell which is inside program cell */
1109     DVDFindCell( p_dvd );
1110
1111     i_cell = p_dvd->i_cell;
1112 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1113     /* parse cell address map to find title cell containing sector */
1114     while( cell.i_end_sector < p_dvd->i_sector )
1115     {
1116         i_cell++;
1117     }
1118
1119     p_dvd->i_cell = i_cell;
1120
1121     p_dvd->i_end_sector = MIN(
1122             cell.i_end_sector,
1123             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1124
1125     /* update chapter */
1126     while( title.chapter_map.pi_start_cell[i_chapter-1] <= p_dvd->i_prg_cell )
1127     {
1128         i_chapter++;
1129     }
1130
1131     p_dvd->i_chapter = i_chapter;
1132     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1133
1134     p_input->stream.p_selected_area->i_tell =
1135                 lseek( p_dvd->i_fd, p_dvd->i_title_start +
1136                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET ) -
1137                 p_input->stream.p_selected_area->i_start;
1138
1139     intf_WarnMsg( 1, "Program Cell: %d Cell: %d Chapter: %d",
1140                      i_prg_cell, i_cell, p_dvd->i_chapter );
1141
1142     return;
1143 }