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 1.22 2001/03/02 03:32:46 stef Exp $
  14  *
  15  * Author: Stéphane Borel <stef@via.ecp.fr>
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  30  *****************************************************************************/
  31
  32 #define MODULE_NAME dvd
  33 #include "modules_inner.h"
  34
  35 /*****************************************************************************
  36  * Preamble
  37  *****************************************************************************/
  38 #include "defs.h"
  39
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <unistd.h>
  43 #include <netinet/in.h>
  44
  45 #include <fcntl.h>
  46 #include <sys/types.h>
  47 #include <sys/uio.h>
  48
  49 #include <string.h>
  50 #include <errno.h>
  51 #include <malloc.h>
  52
  53 #include "config.h"
  54 #include "common.h"
  55 #include "threads.h"
  56 #include "mtime.h"
  57 #include "tests.h"
  58
  59 #include "intf_msg.h"
  60
  61 #include "main.h"
  62
  63 #include "stream_control.h"
  64 #include "input_ext-intf.h"
  65 #include "input_ext-dec.h"
  66
  67 #include "input.h"
  68
  69 #include "dvd_netlist.h"
  70 #include "dvd_ifo.h"
  71 #include "dvd_css.h"
  72 #include "input_dvd.h"
  73 #include "mpeg_system.h"
  74
  75 #include "debug.h"
  76
  77 #include "modules.h"
  78
  79 /*****************************************************************************
  80  * Local tables
  81  *****************************************************************************/
  82 static struct
  83 {
  84     char    p_code[3];
  85     char    p_lang_long[20];
  86 } lang_tbl[] =
  87     {
  88
  89     /* The ISO 639 language codes.
  90      * Language names with * prefix are not spelled in their own language
  91      */
  92         {"  ", "Not Specified"},
  93         {"aa", "*Afar"},
  94         {"ab", "*Abkhazian"},
  95         {"af", "*Afrikaans"},
  96         {"am", "*Amharic"},
  97         {"ar", "*Arabic"},
  98         {"as", "*Assamese"},
  99         {"ay", "*Aymara"},
 100         {"az", "*Azerbaijani"},
 101         {"ba", "*Bashkir"},
 102         {"be", "*Byelorussian"},
 103         {"bg", "*Bulgarian"},
 104         {"bh", "*Bihari"},
 105         {"bi", "*Bislama"},
 106         {"bn", "*Bengali; Bangla"},
 107         {"bo", "*Tibetan"},
 108         {"br", "*Breton"},
 109         {"ca", "*Catalan"},
 110         {"co", "*Corsican"},
 111         {"cs", "*Czech(Ceske)"},
 112         {"cy", "*Welsh"},
 113         {"da", "Dansk"},
 114         {"de", "Deutsch"},
 115         {"dz", "*Bhutani"},
 116         {"el", "*Greek"},
 117         {"en", "English"},
 118         {"eo", "*Esperanto"},
 119         {"es", "Espanol"},
 120         {"et", "*Estonian"},
 121         {"eu", "*Basque"},
 122         {"fa", "*Persian"},
 123         {"fi", "Suomi"},
 124         {"fj", "*Fiji"},
 125         {"fo", "*Faroese"},
 126         {"fr", "Francais"},
 127         {"fy", "*Frisian"},
 128         {"ga", "*Irish"},
 129         {"gd", "*Scots Gaelic"},
 130         {"gl", "*Galician"},
 131         {"gn", "*Guarani"},
 132         {"gu", "*Gujarati"},
 133         {"ha", "*Hausa"},
 134         {"he", "*Hebrew"},                              // formerly iw
 135         {"hi", "*Hindi"},
 136         {"hr", "Hrvatski"},                             // Croatian
 137         {"hu", "Magyar"},
 138         {"hy", "*Armenian"},
 139         {"ia", "*Interlingua"},
 140         {"id", "*Indonesian"},                          // formerly in
 141         {"ie", "*Interlingue"},
 142         {"ik", "*Inupiak"},
 143         {"in", "*Indonesian"},                          // replaced by id
 144         {"is", "Islenska"},
 145         {"it", "Italiano"},
 146         {"iu", "*Inuktitut"},
 147         {"iw", "*Hebrew"},                              // replaced by he
 148         {"ja", "*Japanese"},
 149         {"ji", "*Yiddish"},                             // replaced by yi
 150         {"jw", "*Javanese"},
 151         {"ka", "*Georgian"},
 152         {"kk", "*Kazakh"},
 153         {"kl", "*Greenlandic"},
 154         {"km", "*Cambodian"},
 155         {"kn", "*Kannada"},
 156         {"ko", "*Korean"},
 157         {"ks", "*Kashmiri"},
 158         {"ku", "*Kurdish"},
 159         {"ky", "*Kirghiz"},
 160         {"la", "*Latin"},
 161         {"ln", "*Lingala"},
 162         {"lo", "*Laothian"},
 163         {"lt", "*Lithuanian"},
 164         {"lv", "*Latvian, Lettish"},
 165         {"mg", "*Malagasy"},
 166         {"mi", "*Maori"},
 167         {"mk", "*Macedonian"},
 168         {"ml", "*Malayalam"},
 169         {"mn", "*Mongolian"},
 170         {"mo", "*Moldavian"},
 171         {"mr", "*Marathi"},
 172         {"ms", "*Malay"},
 173         {"mt", "*Maltese"},
 174         {"my", "*Burmese"},
 175         {"na", "*Nauru"},
 176         {"ne", "*Nepali"},
 177         {"nl", "Nederlands"},
 178         {"no", "Norsk"},
 179         {"oc", "*Occitan"},
 180         {"om", "*(Afan) Oromo"},
 181         {"or", "*Oriya"},
 182         {"pa", "*Punjabi"},
 183         {"pl", "*Polish"},
 184         {"ps", "*Pashto, Pushto"},
 185         {"pt", "Portugues"},
 186         {"qu", "*Quechua"},
 187         {"rm", "*Rhaeto-Romance"},
 188         {"rn", "*Kirundi"},
 189         {"ro", "*Romanian"},
 190         {"ru", "*Russian"},
 191         {"rw", "*Kinyarwanda"},
 192         {"sa", "*Sanskrit"},
 193         {"sd", "*Sindhi"},
 194         {"sg", "*Sangho"},
 195         {"sh", "*Serbo-Croatian"},
 196         {"si", "*Sinhalese"},
 197         {"sk", "*Slovak"},
 198         {"sl", "*Slovenian"},
 199         {"sm", "*Samoan"},
 200         {"sn", "*Shona"},
 201         {"so", "*Somali"},
 202         {"sq", "*Albanian"},
 203         {"sr", "*Serbian"},
 204         {"ss", "*Siswati"},
 205         {"st", "*Sesotho"},
 206         {"su", "*Sundanese"},
 207         {"sv", "Svenska"},
 208         {"sw", "*Swahili"},
 209         {"ta", "*Tamil"},
 210         {"te", "*Telugu"},
 211         {"tg", "*Tajik"},
 212         {"th", "*Thai"},
 213         {"ti", "*Tigrinya"},
 214         {"tk", "*Turkmen"},
 215         {"tl", "*Tagalog"},
 216         {"tn", "*Setswana"},
 217         {"to", "*Tonga"},
 218         {"tr", "*Turkish"},
 219         {"ts", "*Tsonga"},
 220         {"tt", "*Tatar"},
 221         {"tw", "*Twi"},
 222         {"ug", "*Uighur"},
 223         {"uk", "*Ukrainian"},
 224         {"ur", "*Urdu"},
 225         {"uz", "*Uzbek"},
 226         {"vi", "*Vietnamese"},
 227         {"vo", "*Volapuk"},
 228         {"wo", "*Wolof"},
 229         {"xh", "*Xhosa"},
 230         {"yi", "*Yiddish"},                             // formerly ji
 231         {"yo", "*Yoruba"},
 232         {"za", "*Zhuang"},
 233         {"zh", "*Chinese"},
 234         {"zu", "*Zulu"},
 235         {"\0", ""}
 236     };
 237
 238 /*****************************************************************************
 239  * Local prototypes
 240  *****************************************************************************/
 241 static int  DVDProbe    ( probedata_t *p_data );
 242 static int  DVDCheckCSS ( struct input_thread_s * );
 243 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 244 static void DVDInit     ( struct input_thread_s * );
 245 static void DVDEnd      ( struct input_thread_s * );
 246 static void DVDSeek     ( struct input_thread_s *, off_t );
 247 static int  DVDSetArea  ( struct input_thread_s *, int, int, int, int );
 248 static int  DVDRewind   ( struct input_thread_s * );
 249
 250 /*****************************************************************************
 251  * Functions exported as capabilities. They are declared as static so that
 252  * we don't pollute the namespace too much.
 253  *****************************************************************************/
 254 void _M( input_getfunctions )( function_list_t * p_function_list )
 255 {
 256 #define input p_function_list->functions.input
 257     p_function_list->pf_probe = DVDProbe;
 258     input.pf_init             = DVDInit;
 259     input.pf_open             = input_FileOpen;
 260     input.pf_close            = input_FileClose;
 261     input.pf_end              = DVDEnd;
 262     input.pf_read             = DVDRead;
 263     input.pf_set_area         = DVDSetArea;
 264     input.pf_demux            = input_DemuxPS;
 265     input.pf_new_packet       = DVDNewPacket;
 266     input.pf_new_pes          = DVDNewPES;
 267     input.pf_delete_packet    = DVDDeletePacket;
 268     input.pf_delete_pes       = DVDDeletePES;
 269     input.pf_rewind           = DVDRewind;
 270     input.pf_seek             = DVDSeek;
 271 #undef input
 272 }
 273
 274 /*
 275  * Local tools to decode some data in ifo
 276  */
 277
 278 /*****************************************************************************
 279  * Language: gives the long language name from the two-letters ISO-639 code
 280  *****************************************************************************/
 281 static char * Language( u16 i_code )
 282 {
 283     int     i = 0;
 284
 285     while( memcmp( lang_tbl[i].p_code, &i_code, 2 ) &&
 286            lang_tbl[i].p_lang_long[0] )
 287     {
 288         i++;
 289     }
 290
 291     return lang_tbl[i].p_lang_long;
 292 }
 293
 294 /*
 295  * Data reading functions
 296  */
 297
 298 /*****************************************************************************
 299  * DVDProbe: verifies that the stream is a PS stream
 300  *****************************************************************************/
 301 static int DVDProbe( probedata_t *p_data )
 302 {
 303     input_thread_t * p_input = (input_thread_t *)p_data;
 304
 305     char * psz_name = p_input->p_source;
 306     int i_handle;
 307     int i_score = 5;
 308
 309     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 310     {
 311         return( 999 );
 312     }
 313
 314     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 315     {
 316         /* If the user specified "dvd:" then it's probably a DVD */
 317         i_score = 100;
 318         psz_name += 4;
 319     }
 320
 321     i_handle = open( psz_name, 0 );
 322     if( i_handle == -1 )
 323     {
 324         return( 0 );
 325     }
 326     close( i_handle );
 327
 328     return( i_score );
 329 }
 330
 331 /*****************************************************************************
 332  * DVDCheckCSS: check the stream
 333  *****************************************************************************/
 334 static int DVDCheckCSS( input_thread_t * p_input )
 335 {
 336     return CSSTest( p_input->i_handle );
 337 }
 338
 339 /*****************************************************************************
 340  * DVDChapterSelect: find the cell corresponding to requested chapter
 341  *****************************************************************************/
 342 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
 343 {
 344     pgc_t *              p_pgc;
 345     int                  i_start_cell;
 346     int                  i_end_cell;
 347     int                  i_index;
 348     int                  i_cell;
 349
 350     p_pgc = &p_dvd->ifo.vts.pgci_ti.p_srp[0].pgc;
 351
 352     /* Find cell index in Program chain for current chapter */
 353     i_index = p_pgc->prg_map.pi_entry_cell[i_chapter-1] - 1;
 354
 355     /* Search for cell_index in cell adress_table */
 356     i_cell = 0;
 357     while( p_pgc->p_cell_pos_inf[i_index].i_vob_id >
 358            p_dvd->ifo.vts.c_adt.p_cell_inf[i_cell].i_vob_id )
 359     {
 360         i_cell++;
 361     }
 362     while( p_pgc->p_cell_pos_inf[i_index].i_cell_id >
 363            p_dvd->ifo.vts.c_adt.p_cell_inf[i_cell].i_cell_id )
 364     {
 365         i_cell++;
 366     }
 367
 368     i_start_cell = i_cell;
 369
 370     p_dvd->i_start = p_dvd->ifo.vts.i_pos + DVD_LB_SIZE *
 371             (off_t)( p_dvd->ifo.vts.mat.i_tt_vobs_ssector +
 372                      p_dvd->ifo.vts.c_adt.p_cell_inf[i_start_cell].i_ssector );
 373
 374     if( i_chapter == 1 )
 375     {
 376         i_end_cell = i_start_cell + p_pgc->i_cell_nb - 1;
 377         p_dvd->i_size = (off_t)DVD_LB_SIZE *
 378             ( p_dvd->ifo.vts.c_adt.p_cell_inf[i_end_cell].i_esector -
 379               p_dvd->ifo.vts.c_adt.p_cell_inf[i_start_cell].i_ssector + 1 );
 380         p_dvd->i_chapter_nb = p_pgc->i_cell_nb;
 381         intf_WarnMsg( 3, "DVD: Start cell: %d End Cell: %d",
 382                                             i_start_cell, i_end_cell );
 383     }
 384
 385     return 0;
 386 }
 387
 388 /*****************************************************************************
 389  * DVDSetArea: initialize input data for title x, chapter y.
 390  * It should be called for each user navigation request, and to change
 391  * audio or sub-picture streams.
 392  * ---
 393  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 394  * i_audio, i_spu start from 1 ; 0 means off.
 395  * A negative value for an argument means it does not change
 396  *****************************************************************************/
 397 static int DVDSetArea( input_thread_t * p_input,
 398                        int i_title, int i_chapter,
 399                        int i_audio, int i_spu )
 400 {
 401     thread_dvd_data_t *  p_method;
 402     es_descriptor_t *    p_es;
 403     int                  i_index;
 404     int                  i_nb;
 405     u16                  i_id;
 406     u8                   i_ac3;
 407     u8                   i_mpeg;
 408     u8                   i_sub_pic;
 409     u8                   i;
 410     boolean_t            b_last;
 411
 412     p_method = (thread_dvd_data_t*)p_input->p_plugin_data;
 413
 414     vlc_mutex_lock( &p_input->stream.stream_lock );
 415
 416     if( i_title >= 0 )
 417     {
 418         /*
 419          *  We have to load all title information
 420          */
 421
 422         /* Change the default area */
 423         p_input->stream.p_selected_area = p_input->stream.pp_areas[i_title];
 424
 425         /* Ifo VTS, and CSS reading */
 426         p_method->ifo.i_title = i_title;
 427         IfoReadVTS( &(p_method->ifo) );
 428         intf_WarnMsg( 2, "Ifo: VTS initialized" );
 429
 430         if( p_method->b_encrypted )
 431         {
 432             p_method->css.i_title = i_title;
 433             p_method->css.i_title_pos =
 434                     p_method->ifo.vts.i_pos +
 435                     p_method->ifo.vts.mat.i_tt_vobs_ssector * DVD_LB_SIZE;
 436             CSSGetKey( &(p_method->css) );
 437             intf_WarnMsg( 2, "CSS: VTS key initialized" );
 438         }
 439
 440         /*
 441          * Set selected title start and size
 442          */
 443         DVDChapterSelect( p_method, 1 );
 444
 445         /* start is : beginning of vts + offset to vobs + offset to vob x */
 446
 447         p_method->i_start =
 448                     lseek( p_input->i_handle, p_method->i_start, SEEK_SET );
 449
 450         intf_WarnMsg( 2, "DVD: vobstart at: %lld", p_method->i_start );
 451         intf_WarnMsg( 2, "DVD: stream size: %lld", p_method->i_size );
 452         intf_WarnMsg( 2, "DVD: number of chapters: %lld",
 453                                                    p_method->i_chapter_nb );
 454
 455         /* Area definition */
 456         p_input->stream.p_selected_area->i_start = p_method->i_start;
 457         p_input->stream.p_selected_area->i_size = p_method->i_size;
 458         p_input->stream.p_selected_area->i_part_nb = p_method->i_chapter_nb;
 459
 460         /*
 461          * Destroy obsolete ES by reinitializing program 0
 462          * and find all ES in title with ifo data
 463          */
 464         if( p_input->stream.pp_programs != NULL )
 465         {
 466             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 467         }
 468
 469         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 470
 471         p_es = NULL;
 472
 473         /* ES 0 -> video MPEG2 */
 474         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 475         p_es->i_stream_id = 0xe0;
 476         p_es->i_type = MPEG2_VIDEO_ES;
 477         input_SelectES( p_input, p_es );
 478         intf_WarnMsg( 1, "DVD: Video MPEG2 stream" );
 479
 480         /* Audio ES, in the order they appear in .ifo */
 481         i_nb = p_method->ifo.vts.mat.i_audio_nb;
 482
 483         i_ac3 = 0x80;
 484         i_mpeg = 0xc0;
 485
 486         for( i = 1 ; i <= i_nb ; i++ )
 487         {
 488
 489 #if 0
 490     fprintf( stderr, "Audio %d: %x %x %x %x %x %x %x\n", i,
 491             p_method->ifo.vts.mat.p_audio_atrt[i].i_num_channels,
 492             p_method->ifo.vts.mat.p_audio_atrt[i].i_coding_mode,
 493             p_method->ifo.vts.mat.p_audio_atrt[i].i_multichannel_extension,
 494             p_method->ifo.vts.mat.p_audio_atrt[i].i_type,
 495             p_method->ifo.vts.mat.p_audio_atrt[i].i_appl_mode,
 496             p_method->ifo.vts.mat.p_audio_atrt[i].i_foo,
 497             p_method->ifo.vts.mat.p_audio_atrt[i].i_bar );
 498 #endif
 499
 500             switch( p_method->ifo.vts.mat.p_audio_atrt[i].i_coding_mode )
 501             {
 502             case 0x00:              /* AC3 */
 503                 i_id = ( ( 0x7f + i ) << 8 ) | 0xbd;
 504                 p_es = input_AddES( p_input,
 505                                     p_input->stream.pp_programs[0], i_id, 0 );
 506                 p_es->i_stream_id = 0xbd;
 507                 p_es->i_type = AC3_AUDIO_ES;
 508                 p_es->b_audio = 1;
 509                 strcpy( p_es->psz_desc, Language( hton16(
 510                     p_method->ifo.vts.mat.p_audio_atrt[i-1].i_lang_code ) ) );
 511
 512                 break;
 513             case 0x02:
 514             case 0x03:              /* MPEG audio */
 515                 i_id = 0xbf + i;
 516                 p_es = input_AddES( p_input,
 517                                     p_input->stream.pp_programs[0], i_id, 0 );
 518                 p_es->i_stream_id = i_id;
 519                 p_es->i_type = MPEG2_AUDIO_ES;
 520                 p_es->b_audio = 1;
 521                 strcpy( p_es->psz_desc, Language( hton16(
 522                     p_method->ifo.vts.mat.p_audio_atrt[i-1].i_lang_code ) ) );
 523
 524                 break;
 525             case 0x04:              /* LPCM */
 526                 i_id = 0;
 527                 intf_ErrMsg( "DVD: LPCM audio not handled yet" );
 528                 break;
 529             case 0x06:              /* DTS */
 530                 i_id = 0;
 531                 intf_ErrMsg( "DVD: DTS audio not handled yet" );
 532                 break;
 533             default:
 534                 i_id = 0;
 535                 intf_ErrMsg( "DVD: unkown audio" );
 536             }
 537
 538             intf_WarnMsg( 1, "DVD: Audio stream %d %s\t(0x%x)",
 539                           i, p_es->psz_desc, i_id );
 540         }
 541
 542         /* Sub Picture ES */
 543         i_nb = p_method->ifo.vts.mat.i_subpic_nb;
 544
 545         b_last = 0;
 546         i_sub_pic = 0x20;
 547         for( i = 1 ; i <= i_nb ; i++ )
 548         {
 549             if( !b_last )
 550             {
 551                 i_id = ( i_sub_pic++ << 8 ) | 0xbd;
 552                 p_es = input_AddES( p_input,
 553                                     p_input->stream.pp_programs[0], i_id, 0 );
 554                 p_es->i_stream_id = 0xbd;
 555                 p_es->i_type = DVD_SPU_ES;
 556                 strcpy( p_es->psz_desc, Language( hton16(
 557                     p_method->ifo.vts.mat.p_subpic_atrt[i-1].i_lang_code ) ) );
 558                 intf_WarnMsg( 1, "DVD: SPU stream %d %s\t(0x%x)",
 559                               i, p_es->psz_desc, i_id );
 560
 561                 /* The before the last spu has a 0x0 prefix */
 562                 b_last =
 563                     ( p_method->ifo.vts.mat.p_subpic_atrt[i].i_prefix == 0 );
 564             }
 565         }
 566
 567     } // i_title >= 0
 568
 569     /*
 570      * Select requested ES
 571      */
 572     if( ( i_audio >= 0 ) || ( i_title >= 0 ) )
 573     {
 574
 575         /* Audio: we check it is in the range and
 576          * default it to the first if not */
 577         if( i_audio > p_method->ifo.vts.mat.i_audio_nb )
 578         {
 579             i_audio = 1;
 580         }
 581
 582         p_es = p_input->stream.pp_programs[0]->pp_es[i_audio];
 583
 584         /* We can only have one audio channel */
 585         /* Look for a preselected one */
 586         i_index = -1;
 587         for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 588         {
 589             if( p_input->stream.pp_selected_es[i]->b_audio )
 590             {
 591                 i_index = i;
 592                 break;
 593             }
 594         }
 595
 596         if( i_index != -1 )
 597         {
 598
 599             if( p_input->stream.pp_selected_es[i_index] != p_es )
 600             {
 601                 input_UnSelectES( p_input,
 602                                   p_input->stream.pp_selected_es[i_index] );
 603                 input_SelectES( p_input, p_es );
 604                 intf_WarnMsg( 1, "DVD: Audio %d selected -> %s (0x%x)",
 605                               i_audio, p_es->psz_desc, p_es->i_id );
 606             }
 607         }
 608         else
 609         {
 610             input_SelectES( p_input, p_es );
 611             intf_WarnMsg( 1, "DVD: Audio %d selected -> %s (0x%x)",
 612                           i_audio, p_es->psz_desc, p_es->i_id );
 613         }
 614     }
 615
 616     if( ( i_spu >= 0 ) || ( i_title >= 0 ) )
 617     {
 618         /* For spu: no one if none or a not existed one requested */
 619         if( ( i_spu <= p_method->ifo.vts.mat.i_subpic_nb ) && ( i_spu > 0 ) )
 620         {
 621             input_SelectES( p_input, ( p_es = p_input->stream.pp_programs[0]->
 622                 pp_es[ i_spu + p_method->ifo.vts.mat.i_audio_nb ] ) );
 623
 624             intf_WarnMsg( 1, "DVD: SPU   %d selected -> %s (0x%x)",
 625                           i_spu, p_es->psz_desc, p_es->i_id );
 626         }
 627     }
 628
 629     /*
 630      * Chapter selection
 631      */
 632
 633     if( ( i_chapter > 0 ) &&
 634         ( i_chapter <= p_input->stream.p_selected_area->i_part_nb ) )
 635     {
 636         DVDChapterSelect( p_method, i_chapter );
 637
 638         p_input->stream.p_selected_area->i_part = i_chapter;
 639
 640         DVDSeek( p_input, p_method->i_start -
 641                           p_input->stream.p_selected_area->i_start );
 642
 643         intf_WarnMsg( 2, "DVD: Chapter %d start at: %lld", i_chapter,
 644                                     p_input->stream.p_selected_area->i_tell );
 645     }
 646
 647     /* No PSM to read in DVD mode, we already have all information */
 648     p_input->stream.pp_programs[0]->b_is_ok = 1;
 649
 650     vlc_mutex_unlock( &p_input->stream.stream_lock );
 651
 652     return 0;
 653 }
 654
 655 /*****************************************************************************
 656  * DVDInit: initializes DVD structures
 657  *****************************************************************************/
 658 static void DVDInit( input_thread_t * p_input )
 659 {
 660     thread_dvd_data_t *  p_method;
 661     int                  i_title;
 662     int                  i_chapter;
 663     int                  i_audio;
 664     int                  i_spu;
 665     int                  i;
 666
 667     if( (p_method = malloc( sizeof(thread_dvd_data_t) )) == NULL )
 668     {
 669         intf_ErrMsg( "Out of memory" );
 670         p_input->b_error = 1;
 671         return;
 672     }
 673
 674     p_input->p_plugin_data = (void *)p_method;
 675     p_input->p_method_data = NULL;
 676
 677     p_method->i_fd = p_input->i_handle;
 678
 679     p_method->i_block_once = 32;
 680     p_input->i_read_once = 128;
 681
 682     p_method->b_encrypted = DVDCheckCSS( p_input );
 683
 684     lseek( p_input->i_handle, 0, SEEK_SET );
 685
 686     /* Reading structures initialisation */
 687     DVDNetlistInit( p_input, 4096, 16384, 4096, DVD_LB_SIZE,
 688                     p_method->i_block_once );
 689     intf_WarnMsg( 2, "DVD: Netlist initialized" );
 690
 691     /* Ifo initialisation */
 692     p_method->ifo = IfoInit( p_input->i_handle );
 693     intf_WarnMsg( 2, "Ifo: VMG initialized" );
 694
 695     /* CSS initialisation */
 696     if( p_method->b_encrypted )
 697     {
 698         p_method->css = CSSInit( p_input->i_handle );
 699
 700         if( ( p_input->b_error = p_method->css.b_error ) )
 701         {
 702             intf_ErrMsg( "CSS fatal error" );
 703             return;
 704         }
 705         intf_WarnMsg( 2, "CSS: initialized" );
 706     }
 707
 708     /* Initialize ES structures */
 709     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 710
 711     /* Set stream and area data */
 712     vlc_mutex_lock( &p_input->stream.stream_lock );
 713
 714     /* FIXME: We consider here that one title is one title set
 715      * it is not true !!! */
 716
 717     intf_WarnMsg( 2, "DVD: Number of titles: %d",
 718                   p_method->ifo.vmg.mat.i_tts_nb );
 719
 720 #define area p_input->stream.pp_areas
 721     /* We start from 1 here since area 0 is reserved for video_ts.vob */
 722     for( i = 1 ; i <= p_method->ifo.vmg.mat.i_tts_nb ; i++ )
 723     {
 724         input_AddArea( p_input );
 725
 726         /* Should not be so simple eventually :
 727          * are title Program Chains, or still something else ? */
 728         area[i]->i_id = i;
 729
 730         /* Absolute start offset and size
 731          * We can only set that with vts ifo, so we do it during the
 732          * first call to DVDSetArea */
 733         area[i]->i_start = 0;
 734         area[i]->i_size = 0;
 735
 736         /* Number of chapter */
 737         area[i]->i_part_nb = 0;
 738         area[i]->i_part = 1;
 739         /* Offset to vts_i_0.ifo */
 740         area[i]->i_plugin_data = p_method->ifo.i_off +
 741             ( p_method->ifo.vmg.ptt_srpt.p_tts[i-1].i_ssector * DVD_LB_SIZE );
 742     }
 743 #undef area
 744
 745     vlc_mutex_unlock( &p_input->stream.stream_lock );
 746
 747     /* Get requested title - if none try to find one where is the movie */
 748     i_title = main_GetIntVariable( INPUT_TITLE_VAR,
 749                               p_method->ifo.vmg.ptt_srpt.p_tts[0].i_tts_nb );
 750     if( i_title <= 0 || i_title >= p_method->ifo.vmg.mat.i_tts_nb )
 751     {
 752         i_title = p_method->ifo.vmg.ptt_srpt.p_tts[0].i_tts_nb;
 753     }
 754
 755     /* Get requested chapter - if none defaults to first one */
 756     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 757     if( i_chapter <= 0 )
 758     {
 759         i_chapter = 1;
 760     }
 761
 762     /* For audio: first one if none or a not existing one specified */
 763     i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 764     if( i_audio <= 0 )
 765     {
 766         main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 767         i_audio = 1;
 768     }
 769
 770     i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 771
 772     DVDSetArea( p_input, i_title, i_chapter, i_audio, i_spu );
 773
 774     return;
 775 }
 776
 777 /*****************************************************************************
 778  * DVDEnd: frees unused data
 779  *****************************************************************************/
 780 static void DVDEnd( input_thread_t * p_input )
 781 {
 782     /* FIXME: check order of calls */
 783 //    CSSEnd( p_input );
 784 //    IfoEnd( (ifo_t*)(&p_input->p_plugin_data->ifo ) );
 785     free( p_input->stream.p_demux_data );
 786     free( p_input->p_plugin_data );
 787     DVDNetlistEnd( p_input );
 788 }
 789
 790 /*****************************************************************************
 791  * DVDRead: reads data packets into the netlist.
 792  *****************************************************************************
 793  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 794  * EOF.
 795  *****************************************************************************/
 796 static int DVDRead( input_thread_t * p_input,
 797                     data_packet_t ** pp_packets )
 798 {
 799     thread_dvd_data_t *     p_method;
 800     netlist_t *             p_netlist;
 801     struct iovec *          p_vec;
 802     struct data_packet_s *  pp_data[p_input->i_read_once];
 803     u8 *                    pi_cur;
 804     int                     i_packet_size;
 805     int                     i_iovec;
 806     int                     i_packet;
 807     int                     i_pos;
 808
 809     p_method = ( thread_dvd_data_t * ) p_input->p_plugin_data;
 810     p_netlist = ( netlist_t * ) p_input->p_method_data;
 811
 812     /* Get an iovec pointer */
 813     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 814     {
 815         intf_ErrMsg( "DVD: read error" );
 816         return -1;
 817     }
 818
 819     /* Reads from DVD */
 820     readv( p_input->i_handle, p_vec, p_method->i_block_once );
 821
 822     /* Update netlist indexes */
 823     DVDMviovec( p_netlist, p_method->i_block_once, pp_data );
 824     i_packet = 0;
 825
 826     /* Read headers to compute payload length */
 827     for( i_iovec = 0 ; i_iovec < p_method->i_block_once ; i_iovec++ )
 828     {
 829         if( p_method->b_encrypted )
 830         {
 831             CSSDescrambleSector( p_method->css.pi_title_key,
 832                                  p_vec[i_iovec].iov_base );
 833             ((u8*)(p_vec[i_iovec].iov_base))[0x14] &= 0x8F;
 834         }
 835
 836         i_pos = 0;
 837
 838         while( i_pos < p_netlist->i_buffer_size )
 839         {
 840             pi_cur = (u8*)(p_vec[i_iovec].iov_base + i_pos);
 841
 842             /*default header */
 843             if( U32_AT( pi_cur ) != 0x1BA )
 844             {
 845                 /* That's the case for all packets, except pack header. */
 846                 i_packet_size = U16_AT( pi_cur + 4 );
 847                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 848             }
 849             else
 850             {
 851                 /* Pack header. */
 852                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
 853                 {
 854                     /* MPEG-2 */
 855                     i_packet_size = 8;
 856                 }
 857                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
 858                 {
 859                     /* MPEG-1 */
 860                     i_packet_size = 6;
 861                 }
 862                 else
 863                 {
 864                     intf_ErrMsg( "Unable to determine stream type" );
 865                     return( -1 );
 866                 }
 867
 868                 pp_packets[i_packet] = pp_data[i_iovec];
 869
 870             }
 871
 872             (*pp_data[i_iovec]->pi_refcount)++;
 873
 874             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 875
 876             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 877
 878             pp_packets[i_packet]->p_payload_start =
 879                     pp_packets[i_packet]->p_buffer + i_pos;
 880
 881             pp_packets[i_packet]->p_payload_end =
 882                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 883
 884             i_packet++;
 885             i_pos += i_packet_size + 6;
 886         }
 887     }
 888
 889     pp_packets[i_packet] = NULL;
 890
 891     vlc_mutex_lock( &p_input->stream.stream_lock );
 892     p_input->stream.p_selected_area->i_tell +=
 893                                         p_method->i_block_once *DVD_LB_SIZE;
 894     vlc_mutex_unlock( &p_input->stream.stream_lock );
 895
 896     return( 0 );
 897 }
 898
 899
 900 /*****************************************************************************
 901  * DVDRewind : reads a stream backward
 902  *****************************************************************************/
 903 static int DVDRewind( input_thread_t * p_input )
 904 {
 905     return( -1 );
 906 }
 907
 908 /*****************************************************************************
 909  * DVDSeek : Goes to a given position on the stream ; this one is used by the
 910  * input and translate chronological position from input to logical postion
 911  * on the device
 912  *****************************************************************************/
 913 static void DVDSeek( input_thread_t * p_input, off_t i_off )
 914 {
 915     thread_dvd_data_t *     p_method;
 916     off_t                   i_pos;
 917
 918     p_method = ( thread_dvd_data_t * )p_input->p_plugin_data;
 919
 920     /* We have to take care of offset of beginning of title */
 921     i_pos = i_off + p_input->stream.p_selected_area->i_start;
 922
 923     /* With DVD, we have to be on a sector boundary */
 924     i_pos = i_pos & (~0x7ff);
 925
 926     i_pos = lseek( p_input->i_handle, i_pos, SEEK_SET );
 927
 928     p_input->stream.p_selected_area->i_tell = i_pos -
 929                                     p_input->stream.p_selected_area->i_start;
 930
 931     return;
 932 }
 933
 934
 935