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 1.16 2001/02/20 07:49:12 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 #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 #include "input_netlist.h"
  69
  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       = input_NetlistNewPacket;
 266     input.pf_new_pes          = input_NetlistNewPES;
 267     input.pf_delete_packet    = input_NetlistDeletePacket;
 268     input.pf_delete_pes       = input_NetlistDeletePES;
 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( char * p_code )
 282 {
 283     int     i = 0;
 284
 285     while( !memcmp( lang_tbl[i].p_code, p_code, 2 ) && lang_tbl[i].p_lang_long )
 286     {
 287         i++;
 288     }
 289
 290     return lang_tbl[i].p_lang_long;
 291 }
 292
 293 /*
 294  * Data reading functions
 295  */
 296
 297 /*****************************************************************************
 298  * DVDProbe: verifies that the stream is a PS stream
 299  *****************************************************************************/
 300 static int DVDProbe( probedata_t *p_data )
 301 {
 302     input_thread_t * p_input = (input_thread_t *)p_data;
 303
 304     char * psz_name = p_input->p_source;
 305     int i_handle;
 306     int i_score = 5;
 307
 308     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 309     {
 310         return( 999 );
 311     }
 312
 313     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 314     {
 315         /* If the user specified "dvd:" then it's probably a DVD */
 316         i_score = 100;
 317         psz_name += 4;
 318     }
 319
 320     i_handle = open( psz_name, 0 );
 321     if( i_handle == -1 )
 322     {
 323         return( 0 );
 324     }
 325     close( i_handle );
 326
 327     return( i_score );
 328 }
 329
 330 /*****************************************************************************
 331  * DVDCheckCSS: check the stream
 332  *****************************************************************************/
 333 static int DVDCheckCSS( input_thread_t * p_input )
 334 {
 335 #if defined( HAVE_SYS_DVDIO_H ) || defined( LINUX_DVD ) || defined( SYS_BEOS )
 336     return CSSTest( p_input->i_handle );
 337 #else
 338     /* DVD ioctls unavailable.
 339      * FIXME: Check the stream to see whether it is encrypted or not
 340      * to give and accurate error message */
 341     return 0;
 342 #endif
 343 }
 344
 345 /*****************************************************************************
 346  * DVDSetArea: initialize input data for title x, chapter y.
 347  * It should be called for each user navigation request, and to change
 348  * audio or sub-picture streams.
 349  * ---
 350  * Take care that i_title and i_chapter start from 0.
 351  *****************************************************************************/
 352 static int DVDSetArea( input_thread_t * p_input,
 353                        int i_title, int i_chapter,
 354                        int i_audio, int i_spu )
 355 {
 356     thread_dvd_data_t *  p_method;
 357     es_descriptor_t *    p_es;
 358     off_t                i_start;
 359     off_t                i_size;
 360     pgc_t *              p_pgc;
 361     int                  i_start_cell;
 362     int                  i_end_cell;
 363     int                  i_index;
 364     int                  i_cell;
 365     int                  i_nb;
 366     int                  i_id;
 367     int                  i;
 368
 369     p_method = (thread_dvd_data_t*)p_input->p_plugin_data;
 370
 371     /* Ifo structures reading */
 372     p_method->ifo.i_title = i_title;
 373     IfoReadVTS( &(p_method->ifo) );
 374     intf_WarnMsg( 2, "Ifo: VTS initialized" );
 375
 376 #if defined( HAVE_SYS_DVDIO_H ) || defined( LINUX_DVD ) || defined( SYS_BEOS )
 377     if( p_method->b_encrypted )
 378     {
 379         p_method->css.i_title = i_title;
 380         p_method->css.i_title_pos =
 381                 p_method->ifo.vts.i_pos +
 382                 p_method->ifo.vts.mat.i_tt_vobs_ssector * DVD_LB_SIZE;
 383         CSSGetKey( &(p_method->css) );
 384         intf_WarnMsg( 2, "CSS: VTS key initialized" );
 385     }
 386 #endif
 387
 388     /* Set selected title start and size */
 389     p_pgc = &p_method->ifo.vts.pgci_ti.p_srp[0].pgc;
 390
 391     /* Find cell index in Program chain */
 392     i_index = p_pgc->prg_map.pi_entry_cell[i_chapter] - 1;
 393
 394     /* Search for cell_index in cell adress_table */
 395     i_cell = 0;
 396     while( p_pgc->p_cell_pos_inf[i_index].i_vob_id >
 397            p_method->ifo.vts.c_adt.p_cell_inf[i_cell].i_vob_id )
 398     {
 399         i_cell++;
 400     }
 401     while( p_pgc->p_cell_pos_inf[i_index].i_cell_id >
 402            p_method->ifo.vts.c_adt.p_cell_inf[i_cell].i_cell_id )
 403     {
 404         i_cell++;
 405     }
 406     i_start_cell = i_cell;
 407     i_end_cell = i_start_cell + p_pgc->i_cell_nb - 1;
 408
 409     intf_WarnMsg( 3, "DVD: Start cell: %d End Cell: %d",
 410                                             i_start_cell, i_end_cell );
 411
 412     p_method->i_start_cell = i_start_cell;
 413     p_method->i_end_cell = i_end_cell;
 414
 415     /* start is : beginning of vts + offset to vobs + offset to vob x */
 416     i_start = p_method->ifo.vts.i_pos + DVD_LB_SIZE *
 417             ( p_method->ifo.vts.mat.i_tt_vobs_ssector +
 418               p_method->ifo.vts.c_adt.p_cell_inf[i_start_cell].i_ssector );
 419
 420     i_start = lseek( p_input->i_handle, i_start, SEEK_SET );
 421     intf_WarnMsg( 2, "DVD: VOBstart at: %lld", i_start );
 422
 423     i_size = (off_t)
 424         ( p_method->ifo.vts.c_adt.p_cell_inf[i_end_cell].i_esector -
 425           p_method->ifo.vts.c_adt.p_cell_inf[i_start_cell].i_ssector + 1 )
 426         *DVD_LB_SIZE;
 427     intf_WarnMsg( 2, "DVD: stream size: %lld", i_size );
 428
 429 #if 0
 430     p_es = NULL;
 431
 432     vlc_mutex_lock( &p_input->stream.stream_lock );
 433
 434     /* ES 0 -> video MPEG2 */
 435     intf_WarnMsg( 1, "DVD: Video MPEG2 stream" );
 436     p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 437     p_es->i_stream_id = 0xe0;
 438     p_es->i_type = MPEG2_VIDEO_ES;
 439     input_SelectES( p_input, p_es );
 440
 441     /* Audio ES, in the order they appear in .ifo */
 442     i_nb = p_method->ifo.vts.mat.i_audio_nb;
 443     intf_WarnMsg( 1, "DVD: Audio streams %d", i_nb );
 444     for( i = 0 ; i < i_nb ; i++ )
 445     {
 446         i_id = ( ( 0x80 + i ) << 8 ) | 0xbd;
 447         p_es = input_AddES( p_input,
 448                            p_input->stream.pp_programs[0], i_id, 0 );
 449         p_es->i_stream_id = 0xbd;
 450         p_es->i_type = AC3_AUDIO_ES;
 451         p_es->b_audio = 1;
 452 //        p_es->psz_desc = p_method->ifo.vts.mat.pi_audio_attr[i];
 453         if( i == 0 )
 454         {
 455             input_SelectES( p_input, p_es );
 456         }
 457     }
 458
 459     /* Sub Picture ES */
 460     i_nb = p_method->ifo.vts.mat.i_subpic_nb;
 461     intf_WarnMsg( 1, "DVD: Subpic streams %d", i_nb );
 462     for( i = 0 ; i < i_nb ; i++ )
 463     {
 464         i_id = ( ( 0x20 + i ) << 8 ) | 0xbd;
 465         p_es = input_AddES( p_input,
 466                            p_input->stream.pp_programs[0], i_id, 0 );
 467         p_es->i_stream_id = 0xbd;
 468         p_es->i_type = DVD_SPU_ES;
 469 //        p_es->psz_desc = p_method->ifo.vts.mat.pi_subpic_attr[i];
 470         if( i == 0 )
 471         {
 472             input_SelectES( p_input, p_es );
 473         }
 474
 475     }
 476
 477     /* area definition */
 478     p_input->stream.pp_areas[0]->i_start = i_start;
 479     p_input->stream.pp_areas[0]->i_size = i_size;
 480
 481     /* No PSM to read in DVD mode */
 482     p_input->stream.pp_programs[0]->b_is_ok = 1;
 483
 484     vlc_mutex_unlock( &p_input->stream.stream_lock );
 485
 486 #else
 487
 488     if( p_input->stream.b_seekable )
 489     {
 490         stream_ps_data_t * p_demux_data =
 491              (stream_ps_data_t *)p_input->stream.pp_programs[0]->p_demux_data;
 492
 493         /* Pre-parse the stream to gather stream_descriptor_t. */
 494         p_input->stream.pp_programs[0]->b_is_ok = 0;
 495         p_demux_data->i_PSM_version = EMPTY_PSM_VERSION;
 496
 497         while( !p_input->b_die && !p_input->b_error
 498                 && !p_demux_data->b_has_PSM )
 499         {
 500             int                 i_result, i;
 501             data_packet_t *     pp_packets[INPUT_READ_ONCE];
 502
 503             i_result = DVDRead( p_input, pp_packets );
 504             if( i_result == 1 )
 505             {
 506                 /* EOF */
 507                 vlc_mutex_lock( &p_input->stream.stream_lock );
 508                 p_input->stream.pp_programs[0]->b_is_ok = 1;
 509                 vlc_mutex_unlock( &p_input->stream.stream_lock );
 510                 break;
 511             }
 512             if( i_result == -1 )
 513             {
 514                 p_input->b_error = 1;
 515                 break;
 516             }
 517
 518             for( i = 0; i < INPUT_READ_ONCE && pp_packets[i] != NULL; i++ )
 519             {
 520                 /* FIXME: use i_p_config_t */
 521                 input_ParsePS( p_input, pp_packets[i] );
 522                 input_NetlistDeletePacket( p_input->p_method_data,
 523                                            pp_packets[i] );
 524             }
 525
 526             /* File too big. */
 527             if( p_input->stream.pp_areas[0]->i_tell > INPUT_PREPARSE_LENGTH )
 528             {
 529                 break;
 530             }
 531         }
 532         lseek( p_input->i_handle, i_start, SEEK_SET );
 533         vlc_mutex_lock( &p_input->stream.stream_lock );
 534
 535         /* i_tell is an indicator from the beginning of the stream,
 536          * not of the DVD */
 537         p_input->stream.pp_areas[0]->i_tell = 0;
 538
 539         if( p_demux_data->b_has_PSM )
 540         {
 541             /* (The PSM decoder will care about spawning the decoders) */
 542             p_input->stream.pp_programs[0]->b_is_ok = 1;
 543         }
 544 #ifdef AUTO_SPAWN
 545         else
 546         {
 547             /* (We have to do it ourselves) */
 548             int                 i_es;
 549
 550             /* FIXME: we should do multiple passes in case an audio type
 551              * is not present */
 552             for( i_es = 0;
 553                  i_es < p_input->stream.pp_programs[0]->i_es_number;
 554                  i_es++ )
 555             {
 556 #define p_es p_input->stream.pp_programs[0]->pp_es[i_es]
 557                 switch( p_es->i_type )
 558                 {
 559                     case MPEG1_VIDEO_ES:
 560                     case MPEG2_VIDEO_ES:
 561                         input_SelectES( p_input, p_es );
 562                         break;
 563
 564                     case MPEG1_AUDIO_ES:
 565                     case MPEG2_AUDIO_ES:
 566                         if( main_GetIntVariable( INPUT_CHANNEL_VAR, 0 )
 567                                 == (p_es->i_id & 0x1F) )
 568                         switch( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) )
 569                         {
 570                         case 0:
 571                             main_PutIntVariable( INPUT_AUDIO_VAR,
 572                                                  REQUESTED_MPEG );
 573                         case REQUESTED_MPEG:
 574                             input_SelectES( p_input, p_es );
 575                         }
 576                         break;
 577
 578                     case AC3_AUDIO_ES:
 579                         if( main_GetIntVariable( INPUT_CHANNEL_VAR, 0 )
 580                                 == ((p_es->i_id & 0xF00) >> 8) )
 581                         switch( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) )
 582                         {
 583                         case 0:
 584                             main_PutIntVariable( INPUT_AUDIO_VAR,
 585                                                  REQUESTED_AC3 );
 586                         case REQUESTED_AC3:
 587                             input_SelectES( p_input, p_es );
 588                         }
 589                         break;
 590
 591                     case DVD_SPU_ES:
 592                         if( main_GetIntVariable( INPUT_SUBTITLE_VAR, -1 )
 593                                 == ((p_es->i_id & 0x1F00) >> 8) )
 594                         {
 595                             input_SelectES( p_input, p_es );
 596                         }
 597                         break;
 598
 599                     case LPCM_AUDIO_ES:
 600                         /* FIXME ! */
 601                         break;
 602                 }
 603             }
 604
 605         }
 606 #endif
 607 #ifdef STATS
 608         input_DumpStream( p_input );
 609 #endif
 610
 611         /* FIXME : ugly kludge */
 612         p_input->stream.pp_areas[0]->i_size = i_size;
 613
 614         vlc_mutex_unlock( &p_input->stream.stream_lock );
 615     }
 616     else
 617     {
 618         /* The programs will be added when we read them. */
 619         vlc_mutex_lock( &p_input->stream.stream_lock );
 620         p_input->stream.pp_programs[0]->b_is_ok = 0;
 621
 622         /* FIXME : ugly kludge */
 623         p_input->stream.pp_areas[0]->i_size = i_size;
 624
 625         vlc_mutex_unlock( &p_input->stream.stream_lock );
 626     }
 627 #endif
 628
 629     return 0;
 630 }
 631
 632 /*****************************************************************************
 633  * DVDInit: initializes DVD structures
 634  *****************************************************************************/
 635 static void DVDInit( input_thread_t * p_input )
 636 {
 637     thread_dvd_data_t *  p_method;
 638     int                  i;
 639
 640     if( (p_method = malloc( sizeof(thread_dvd_data_t) )) == NULL )
 641     {
 642         intf_ErrMsg( "Out of memory" );
 643         p_input->b_error = 1;
 644         return;
 645     }
 646
 647     p_input->p_plugin_data = (void *)p_method;
 648     p_input->p_method_data = NULL;
 649
 650     p_method->i_fd = p_input->i_handle;
 651     /* FIXME: read several packets once */
 652     p_method->i_read_once = 1;
 653     p_method->b_encrypted = DVDCheckCSS( p_input );
 654
 655     lseek( p_input->i_handle, 0, SEEK_SET );
 656
 657     /* Reading structures initialisation */
 658     input_NetlistInit( p_input, 4096, 4096, DVD_LB_SIZE,
 659                        p_method->i_read_once );
 660     intf_WarnMsg( 2, "DVD: Netlist initialized" );
 661
 662     /* Ifo initialisation */
 663     p_method->ifo = IfoInit( p_input->i_handle );
 664     intf_WarnMsg( 2, "Ifo: VMG initialized" );
 665
 666     /* CSS initialisation */
 667     if( p_method->b_encrypted )
 668     {
 669
 670 #if defined( HAVE_SYS_DVDIO_H ) || defined( LINUX_DVD ) || defined( SYS_BEOS )
 671         p_method->css = CSSInit( p_input->i_handle );
 672
 673         if( ( p_input->b_error = p_method->css.b_error ) )
 674         {
 675             intf_ErrMsg( "CSS fatal error" );
 676             return;
 677         }
 678         intf_WarnMsg( 2, "CSS: initialized" );
 679 #else
 680         intf_ErrMsg( "Unscrambling not supported" );
 681         p_input->b_error = 1;
 682         return;
 683 #endif
 684     }
 685
 686     /* Initialize ES structures */
 687     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 688     input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 689
 690     /* Set stream and area data */
 691     vlc_mutex_lock( &p_input->stream.stream_lock );
 692
 693     /* FIXME: We consider here that one title is one title set
 694      * it is not true !!! */
 695
 696 #define area p_input->stream.pp_areas
 697     /* We start from 1 here since area 0 is reserved for video_ts.vob */
 698     for( i = 1 ; i < p_method->ifo.vmg.mat.i_tts_nb ; i++ )
 699     {
 700         input_AddArea( p_input );
 701
 702         /* Should not be so simple eventually :
 703          * are title Program Chains, or still something else ? */
 704         area[i]->i_id = i;
 705
 706         /* Absolute start offset and size
 707          * We can only set that with vts ifo, so we do it during the
 708          * first call to DVDSetArea */
 709         area[i]->i_start = 0;
 710         area[i]->i_size = 0;
 711
 712         /* Number of chapter */
 713         area[i]->i_part_nb = 0;
 714         area[i]->i_part = 1;
 715         /* Offset to vts_i_0.ifo */
 716         area[i]->i_plugin_data = p_method->ifo.i_off +
 717             ( p_method->ifo.vmg.ptt_srpt.p_tts[i-1].i_ssector * DVD_LB_SIZE );
 718     }
 719 #undef area
 720
 721     vlc_mutex_unlock( &p_input->stream.stream_lock );
 722
 723     /* By default, set all parameters to 0 */
 724     /* FIXME: wrong kludge to get first title number */
 725     DVDSetArea( p_input, p_method->ifo.vmg.ptt_srpt.p_tts[0].i_tts_nb - 1,
 726                 0, 0, 0 );
 727
 728     return;
 729 }
 730
 731 /*****************************************************************************
 732  * DVDEnd: frees unused data
 733  *****************************************************************************/
 734 static void DVDEnd( input_thread_t * p_input )
 735 {
 736     /* FIXME: check order of calls */
 737 //    CSSEnd( p_input );
 738 //    IfoEnd( (ifo_t*)(&p_input->p_plugin_data->ifo ) );
 739     free( p_input->stream.p_demux_data );
 740     free( p_input->p_plugin_data );
 741     input_NetlistEnd( p_input );
 742 }
 743
 744 /*****************************************************************************
 745  * DVDRead: reads data packets into the netlist.
 746  *****************************************************************************
 747  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 748  * EOF.
 749  *****************************************************************************/
 750 static int DVDRead( input_thread_t * p_input,
 751                    data_packet_t ** pp_packets )
 752 {
 753     thread_dvd_data_t *     p_method;
 754     netlist_t *             p_netlist;
 755     struct iovec *          p_vec;
 756     struct data_packet_s *  p_data;
 757     u8 *                    pi_cur;
 758     int                     i_packet_size;
 759     int                     i_packet;
 760     int                     i_pos;
 761     int                     i;
 762     boolean_t               b_first_packet;
 763
 764     p_method = ( thread_dvd_data_t * ) p_input->p_plugin_data;
 765     p_netlist = ( netlist_t * ) p_input->p_method_data;
 766
 767     /* Get an iovec pointer */
 768     if( ( p_vec = input_NetlistGetiovec( p_netlist ) ) == NULL )
 769     {
 770         intf_ErrMsg( "DVD: read error" );
 771         return -1;
 772     }
 773
 774     /* Reads from DVD */
 775     readv( p_input->i_handle, p_vec, p_method->i_read_once );
 776
 777 #if defined( HAVE_SYS_DVDIO_H ) || defined( LINUX_DVD ) || defined( SYS_BEOS )
 778     if( p_method->b_encrypted )
 779     {
 780         for( i=0 ; i<p_method->i_read_once ; i++ )
 781         {
 782             CSSDescrambleSector( p_method->css.pi_title_key,
 783                                  p_vec[i].iov_base );
 784             ((u8*)(p_vec[i].iov_base))[0x14] &= 0x8F;
 785         }
 786     }
 787 #endif
 788
 789     /* Update netlist indexes */
 790     input_NetlistMviovec( p_netlist, p_method->i_read_once, &p_data );
 791
 792     i_packet = 0;
 793     /* Read headers to compute payload length */
 794     for( i = 0 ; i < p_method->i_read_once ; i++ )
 795     {
 796         i_pos = 0;
 797         b_first_packet = 1;
 798         while( i_pos < p_netlist->i_buffer_size )
 799         {
 800             pi_cur = (u8*)(p_vec[i].iov_base + i_pos);
 801             /*default header */
 802             if( U32_AT( pi_cur ) != 0x1BA )
 803             {
 804                 /* That's the case for all packets, except pack header. */
 805                 i_packet_size = U16_AT( pi_cur + 4 );
 806             }
 807             else
 808             {
 809                 /* Pack header. */
 810                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
 811                 {
 812                     /* MPEG-2 */
 813                     i_packet_size = 8;
 814                 }
 815                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
 816                 {
 817                     /* MPEG-1 */
 818                     i_packet_size = 6;
 819                 }
 820                 else
 821                 {
 822                     intf_ErrMsg( "Unable to determine stream type" );
 823                     return( -1 );
 824                 }
 825             }
 826             if( b_first_packet )
 827             {
 828                 p_data->b_discard_payload = 0;
 829                 b_first_packet = 0;
 830             }
 831             else
 832             {
 833                 p_data = input_NetlistNewPacket( p_netlist ,
 834                                                  i_packet_size + 6 );
 835                 memcpy( p_data->p_buffer,
 836                         p_vec[i].iov_base + i_pos , i_packet_size + 6 );
 837             }
 838
 839             p_data->p_payload_end = p_data->p_payload_start + i_packet_size + 6;
 840             pp_packets[i_packet] = p_data;
 841             i_packet++;
 842             i_pos += i_packet_size + 6;
 843         }
 844     }
 845     pp_packets[i_packet] = NULL;
 846
 847     vlc_mutex_lock( &p_input->stream.stream_lock );
 848     p_input->stream.pp_areas[0]->i_tell += p_method->i_read_once *DVD_LB_SIZE;
 849     vlc_mutex_unlock( &p_input->stream.stream_lock );
 850
 851     return( 0 );
 852 }
 853
 854
 855 /*****************************************************************************
 856  * DVDRewind : reads a stream backward
 857  *****************************************************************************/
 858 static int DVDRewind( input_thread_t * p_input )
 859 {
 860     return( -1 );
 861 }
 862
 863 /*****************************************************************************
 864  * DVDSeek : Goes to a given position on the stream ; this one is used by the
 865  * input and translate chronological position from input to logical postion
 866  * on the device
 867  *****************************************************************************/
 868 static void DVDSeek( input_thread_t * p_input, off_t i_off )
 869 {
 870     thread_dvd_data_t *     p_method;
 871     off_t                   i_pos;
 872
 873     p_method = ( thread_dvd_data_t * )p_input->p_plugin_data;
 874
 875     /* We have to take care of offset of beginning of title */
 876     i_pos = i_off + p_input->stream.pp_areas[0]->i_start;
 877
 878     /* With DVD, we have to be on a sector boundary */
 879     i_pos = i_pos & (~0x7ff);
 880
 881     i_pos = lseek( p_input->i_handle, i_pos, SEEK_SET );
 882
 883     p_input->stream.pp_areas[0]->i_tell = i_pos - p_input->stream.pp_areas[0]->i_start;
 884
 885     return;
 886 }