git.sesse.net Git - vlc/blob - plugins/dvdread/input_dvdread.c

   1 /*****************************************************************************
   2  * input_dvdread.c: DvdRead 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: libdvdread for ifo files and block reading.
   7  *****************************************************************************
   8  * Copyright (C) 2001 VideoLAN
   9  * $Id: input_dvdread.c,v 1.8 2001/12/29 03:07:51 massiot Exp $
  10  *
  11  * Author: Stéphane Borel <stef@via.ecp.fr>
  12  *
  13  * Some code taken form the play_title.c by Billy Biggs <vektor@dumbterm.net>
  14  * in libdvdread.
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  29  *****************************************************************************/
  30
  31 #define MODULE_NAME dvdread
  32 #include "modules_inner.h"
  33
  34 /*****************************************************************************
  35  * Preamble
  36  *****************************************************************************/
  37 #include "defs.h"
  38
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41
  42 #ifdef HAVE_UNISTD_H
  43 #   include <unistd.h>
  44 #endif
  45
  46 #include <fcntl.h>
  47 #include <sys/types.h>
  48 #include <string.h>
  49 #include <errno.h>
  50 #include <assert.h>
  51
  52 #ifdef STRNCASECMP_IN_STRINGS_H
  53 #   include <strings.h>
  54 #endif
  55
  56 #if defined( WIN32 )
  57 #   include <io.h>                                                 /* read() */
  58 #else
  59 #   include <sys/uio.h>                                      /* struct iovec */
  60 #endif
  61
  62
  63 #include "common.h"
  64 #include "intf_msg.h"
  65 #include "threads.h"
  66 #include "mtime.h"
  67 #include "iso_lang.h"
  68 #include "tests.h"
  69
  70 #if defined( WIN32 )
  71 #   include "input_iovec.h"
  72 #endif
  73
  74 #include "stream_control.h"
  75 #include "input_ext-intf.h"
  76 #include "input_ext-dec.h"
  77 #include "input_ext-plugins.h"
  78
  79 #include "input_dvdread.h"
  80
  81 #include "debug.h"
  82
  83 #include "modules.h"
  84 #include "modules_export.h"
  85
  86 /* how many blocks DVDRead will read in each loop */
  87 #define DVD_BLOCK_READ_ONCE 64
  88 #define DVD_DATA_READ_ONCE  (4 * DVD_BLOCK_READ_ONCE)
  89
  90 /*****************************************************************************
  91  * Local prototypes
  92  *****************************************************************************/
  93 /* called from outside */
  94 static int  DvdReadProbe    ( probedata_t *p_data );
  95 static void DvdReadInit     ( struct input_thread_s * );
  96 static void DvdReadEnd      ( struct input_thread_s * );
  97 static void DvdReadOpen     ( struct input_thread_s * );
  98 static void DvdReadClose    ( struct input_thread_s * );
  99 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
 100 static int  DvdReadRead     ( struct input_thread_s *, data_packet_t ** );
 101 static void DvdReadSeek     ( struct input_thread_s *, off_t );
 102 static int  DvdReadRewind   ( struct input_thread_s * );
 103
 104 /* called only from here */
 105 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
 106 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
 107
 108 /*****************************************************************************
 109  * Declare a buffer manager
 110  *****************************************************************************/
 111 #define FLAGS           BUFFERS_UNIQUE_SIZE
 112 #define NB_LIFO         1
 113 DECLARE_BUFFERS_SHARED( FLAGS, NB_LIFO );
 114 DECLARE_BUFFERS_INIT( FLAGS, NB_LIFO );
 115 DECLARE_BUFFERS_END_SHARED( FLAGS, NB_LIFO );
 116 DECLARE_BUFFERS_NEWPACKET_SHARED( FLAGS, NB_LIFO );
 117 DECLARE_BUFFERS_DELETEPACKET_SHARED( FLAGS, NB_LIFO, 1000 );
 118 DECLARE_BUFFERS_NEWPES( FLAGS, NB_LIFO );
 119 DECLARE_BUFFERS_DELETEPES( FLAGS, NB_LIFO, 1000 );
 120 DECLARE_BUFFERS_TOIO( FLAGS, DVD_LB_SIZE );
 121 DECLARE_BUFFERS_SHAREBUFFER( FLAGS );
 122
 123 /*****************************************************************************
 124  * Functions exported as capabilities. They are declared as static so that
 125  * we don't pollute the namespace too much.
 126  *****************************************************************************/
 127 void _M( input_getfunctions )( function_list_t * p_function_list )
 128 {
 129 #define input p_function_list->functions.input
 130     p_function_list->pf_probe = DvdReadProbe;
 131     input.pf_init             = DvdReadInit;
 132     input.pf_open             = DvdReadOpen;
 133     input.pf_close            = DvdReadClose;
 134     input.pf_end              = DvdReadEnd;
 135     input.pf_init_bit_stream  = InitBitstream;
 136     input.pf_read             = DvdReadRead;
 137     input.pf_set_area         = DvdReadSetArea;
 138     input.pf_demux            = input_DemuxPS;
 139     input.pf_new_packet       = input_NewPacket;
 140     input.pf_new_pes          = input_NewPES;
 141     input.pf_delete_packet    = input_DeletePacket;
 142     input.pf_delete_pes       = input_DeletePES;
 143     input.pf_rewind           = DvdReadRewind;
 144     input.pf_seek             = DvdReadSeek;
 145 #undef input
 146 }
 147
 148 /*
 149  * Data reading functions
 150  */
 151
 152 /*****************************************************************************
 153  * DvdReadProbe: verifies that the stream is a PS stream
 154  *****************************************************************************/
 155 static int DvdReadProbe( probedata_t *p_data )
 156 {
 157     input_thread_t * p_input = (input_thread_t *)p_data;
 158
 159     char * psz_name = p_input->p_source;
 160     int i_score = 5;
 161
 162     if( TestMethod( INPUT_METHOD_VAR, "dvdread" ) )
 163     {
 164         return( 999 );
 165     }
 166
 167     if( ( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ) )
 168     {
 169         /* If the user specified "dvdread:" then he probably wants
 170          * to use libdvdread */
 171         i_score = 100;
 172         psz_name += 4;
 173     }
 174
 175     return( i_score );
 176 }
 177
 178 /*****************************************************************************
 179  * DvdReadInit: initializes DVD structures
 180  *****************************************************************************/
 181 static void DvdReadInit( input_thread_t * p_input )
 182 {
 183     thread_dvd_data_t *  p_dvd;
 184     input_area_t *       p_area;
 185     int                  i_title;
 186     int                  i_chapter;
 187     int                  i;
 188
 189     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 190     if( p_dvd == NULL )
 191     {
 192         intf_ErrMsg( "dvdread error: out of memory" );
 193         p_input->b_error = 1;
 194         return;
 195     }
 196
 197     /* we take the pointer to dvd_reader_t back  */
 198     p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
 199     p_dvd->p_title = NULL;
 200     p_dvd->p_vts_file = NULL;
 201
 202     p_input->p_plugin_data = (void *)p_dvd;
 203
 204     if( (p_input->p_method_data = input_BuffersInit()) == NULL )
 205     {
 206         p_input->b_error = 1;
 207         return;
 208     }
 209
 210     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 211      * DVD_DATA_READ_ONCE at most */
 212     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 213
 214     /* Ifo allocation & initialisation */
 215     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 216     {
 217         intf_ErrMsg( "dvdread error: can't open VMG info" );
 218         DVDClose( p_dvd->p_dvdread );
 219         free( p_dvd );
 220         p_input->b_error = 1;
 221         return;
 222     }
 223     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 224
 225     /* Set stream and area data */
 226     vlc_mutex_lock( &p_input->stream.stream_lock );
 227
 228     /* Initialize ES structures */
 229     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 230
 231     /* disc input method */
 232     p_input->stream.i_method = INPUT_METHOD_DVD;
 233
 234 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 235     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 236
 237 #define area p_input->stream.pp_areas
 238     /* We start from 1 here since the default area 0
 239      * is reserved for video_ts.vob */
 240     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 241     {
 242         input_AddArea( p_input );
 243
 244         /* Titles are Program Chains */
 245         area[i]->i_id = i;
 246
 247         /* Absolute start offset and size
 248          * We can only set that with vts ifo, so we do it during the
 249          * first call to DVDSetArea */
 250         area[i]->i_start = 0;
 251         area[i]->i_size = 0;
 252
 253         /* Number of chapters */
 254         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 255         area[i]->i_part = 1;
 256
 257         /* Number of angles */
 258         area[i]->i_angle_nb = 0;
 259         area[i]->i_angle = 1;
 260
 261         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 262     }
 263 #undef area
 264
 265     /* Get requested title - if none try the first title */
 266     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 267     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 268     {
 269         i_title = 1;
 270     }
 271
 272 #undef tt_srpt
 273
 274     /* Get requested chapter - if none defaults to first one */
 275     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 276     if( i_chapter <= 0 )
 277     {
 278         i_chapter = 1;
 279     }
 280
 281     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 282
 283     p_area = p_input->stream.pp_areas[i_title];
 284
 285     /* set title, chapter, audio and subpic */
 286     DvdReadSetArea( p_input, p_area );
 287
 288     vlc_mutex_unlock( &p_input->stream.stream_lock );
 289
 290     return;
 291 }
 292
 293 /*****************************************************************************
 294  * DvdReadOpen: open libdvdread
 295  *****************************************************************************/
 296 static void DvdReadOpen( struct input_thread_s *p_input )
 297 {
 298     dvd_reader_t    *p_dvdread;
 299
 300     vlc_mutex_lock( &p_input->stream.stream_lock );
 301
 302     /* If we are here we can control the pace... */
 303     p_input->stream.b_pace_control = 1;
 304
 305     p_input->stream.b_seekable = 1;
 306     p_input->stream.p_selected_area->i_size = 0;
 307
 308     p_input->stream.p_selected_area->i_tell = 0;
 309
 310     vlc_mutex_unlock( &p_input->stream.stream_lock );
 311
 312     /* XXX: put this shit in an access plugin */
 313     if( strlen( p_input->p_source ) > 8
 314          && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
 315     {
 316         p_dvdread = DVDOpen( p_input->p_source + 8 );
 317     }
 318     else
 319     {
 320         p_dvdread = DVDOpen( p_input->p_source );
 321     }
 322
 323     if( ! p_dvdread )
 324     {
 325         p_input->b_error = 1;
 326         return;
 327     }
 328
 329     /* the vlc input doesn't handle the file descriptor with libdvdread */
 330     p_input->i_handle = -1;
 331
 332     /* p_dvdread is stored in p_plugin_data until we have
 333      * malloc'ed a dvd_thread_data_t */
 334     p_input->p_plugin_data = (void *) p_dvdread;
 335 }
 336
 337 /*****************************************************************************
 338  * DvdReadClose: close libdvdread
 339  *****************************************************************************/
 340 static void DvdReadClose( struct input_thread_s *p_input )
 341 {
 342     DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
 343     free( p_input->p_plugin_data );
 344     p_input->p_plugin_data = NULL;
 345
 346 }
 347
 348 /*****************************************************************************
 349  * DvdReadEnd: frees unused data
 350  *****************************************************************************/
 351 static void DvdReadEnd( input_thread_t * p_input )
 352 {
 353     thread_dvd_data_t *     p_dvd;
 354
 355     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 356
 357     /* close libdvdread */
 358     DVDCloseFile( p_dvd->p_title );
 359     ifoClose( p_dvd->p_vts_file );
 360     ifoClose( p_dvd->p_vmg_file );
 361
 362     input_BuffersEnd( p_input->p_method_data );
 363 }
 364
 365 #define p_pgc         p_dvd->p_cur_pgc
 366
 367 /*****************************************************************************
 368  * DvdReadSetArea: initialize input data for title x, chapter y.
 369  * It should be called for each user navigation request.
 370  *****************************************************************************
 371  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 372  * Note that you have to take the lock before entering here.
 373  *****************************************************************************/
 374 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 375 {
 376     thread_dvd_data_t *  p_dvd;
 377     int                  pgc_id = 0;
 378     int                  pgn = 0;
 379
 380     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 381
 382     /* we can't use the interface slider until initilization is complete */
 383     p_input->stream.b_seekable = 0;
 384
 385     if( p_area != p_input->stream.p_selected_area )
 386     {
 387         es_descriptor_t *    p_es;
 388         int                  i_cell = 0;
 389         int                  i_audio_nb = 0;
 390         int                  i_spu_nb = 0;
 391         int                  i;
 392
 393 #define p_vmg         p_dvd->p_vmg_file
 394 #define p_vts         p_dvd->p_vts_file
 395         if( p_dvd->p_title != NULL )
 396         {
 397             DVDCloseFile( p_dvd->p_title );
 398         }
 399
 400         if( p_vts != NULL )
 401         {
 402             ifoClose( p_vts );
 403         }
 404
 405         /* Reset the Chapter position of the old title */
 406         p_input->stream.p_selected_area->i_part = 1;
 407
 408         /*
 409          *  We have to load all title information
 410          */
 411         /* Change the default area */
 412         p_input->stream.p_selected_area = p_area;
 413
 414         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 415             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 416             p_area->i_id );
 417
 418         /* ifo vts */
 419         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 420                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 421         {
 422             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 423             ifoClose( p_vmg );
 424             DVDClose( p_dvd->p_dvdread );
 425             p_input->b_error = 1;
 426             return -1;
 427         }
 428
 429         /* title position inside the selected vts */
 430         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 431
 432         /*
 433          * Set selected title start
 434          */
 435         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 436         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 437         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 438         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 439
 440         p_area->i_start =
 441             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 442
 443         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 444                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 445
 446         /*
 447          * Find title end
 448          */
 449         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 450
 451         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 452         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 453
 454         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 455                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 456
 457         /*
 458          * Set properties for current chapter
 459          */
 460         /* Remeber current chapter */
 461         p_dvd->i_chapter = p_area->i_part;
 462         p_dvd->b_eoc = 0;
 463
 464         pgc_id = p_vts->vts_ptt_srpt->title[
 465                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 466         pgn = p_vts->vts_ptt_srpt->title[
 467                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 468
 469         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 470         p_dvd->i_pack_len = 0;
 471         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 472         DvdReadFindCell( p_dvd );
 473
 474         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 475             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 476
 477         /*
 478          * Angle management
 479          */
 480         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 481         p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 482
 483         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 484         {
 485             p_area->i_angle = 1;
 486         }
 487         p_dvd->i_angle = p_area->i_angle;
 488         p_dvd->i_angle_nb = p_area->i_angle_nb;
 489
 490         /*
 491          * We've got enough info, time to open the title set data.
 492          */
 493         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 494             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 495             DVD_READ_TITLE_VOBS ) ) )
 496         {
 497             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 498                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 499             ifoClose( p_vts );
 500             ifoClose( p_vmg );
 501             DVDClose( p_dvd->p_dvdread );
 502             return -1;
 503         }
 504
 505 //        IfoPrintTitle( p_dvd );
 506
 507         /*
 508          * Destroy obsolete ES by reinitializing program 0
 509          * and find all ES in title with ifo data
 510          */
 511         if( p_input->stream.pp_programs != NULL )
 512         {
 513             /* We don't use input_EndStream here since
 514              * we keep area structures */
 515
 516             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 517             {
 518                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 519             }
 520
 521             free( p_input->stream.pp_selected_es );
 522             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 523
 524             p_input->stream.pp_selected_es = NULL;
 525             p_input->stream.i_selected_es_number = 0;
 526         }
 527
 528         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 529
 530         /* No PSM to read in DVD mode, we already have all information */
 531         p_input->stream.pp_programs[0]->b_is_ok = 1;
 532
 533         p_es = NULL;
 534
 535         /* ES 0 -> video MPEG2 */
 536 //        IfoPrintVideo( p_dvd );
 537
 538         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 539         p_es->i_stream_id = 0xe0;
 540         p_es->i_type = MPEG2_VIDEO_ES;
 541         p_es->i_cat = VIDEO_ES;
 542         if( p_main->b_video )
 543         {
 544             input_SelectES( p_input, p_es );
 545         }
 546
 547 #define audio_control \
 548     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 549         /* Audio ES, in the order they appear in .ifo */
 550         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 551         {
 552             int i_position = 0;
 553             u16 i_id;
 554
 555 //            IfoPrintAudio( p_dvd, i );
 556
 557             /* audio channel is active if first byte is 0x80 */
 558             if( audio_control & 0x8000 )
 559             {
 560                 i_audio_nb++;
 561                 i_position = ( audio_control & 0x7F00 ) >> 8;
 562
 563             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 564                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 565                 {
 566                 case 0x00:              /* AC3 */
 567                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 568                     p_es = input_AddES( p_input,
 569                                p_input->stream.pp_programs[0], i_id, 0 );
 570                     p_es->i_stream_id = 0xbd;
 571                     p_es->i_type = AC3_AUDIO_ES;
 572                     p_es->b_audio = 1;
 573                     p_es->i_cat = AUDIO_ES;
 574                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 575                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 576                     strcat( p_es->psz_desc, " (ac3)" );
 577
 578                     break;
 579                 case 0x02:
 580                 case 0x03:              /* MPEG audio */
 581                     i_id = 0xc0 + i_position;
 582                     p_es = input_AddES( p_input,
 583                                     p_input->stream.pp_programs[0], i_id, 0 );
 584                     p_es->i_stream_id = i_id;
 585                     p_es->i_type = MPEG2_AUDIO_ES;
 586                     p_es->b_audio = 1;
 587                     p_es->i_cat = AUDIO_ES;
 588                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 589                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 590                     strcat( p_es->psz_desc, " (mpeg)" );
 591
 592                     break;
 593                 case 0x04:              /* LPCM */
 594
 595                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 596                     p_es = input_AddES( p_input,
 597                                     p_input->stream.pp_programs[0], i_id, 0 );
 598                     p_es->i_stream_id = i_id;
 599                     p_es->i_type = LPCM_AUDIO_ES;
 600                     p_es->b_audio = 1;
 601                     p_es->i_cat = AUDIO_ES;
 602                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 603                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 604                     strcat( p_es->psz_desc, " (lpcm)" );
 605
 606                     break;
 607                 case 0x06:              /* DTS */
 608                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 609                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 610                                  "(0x%x)", i_id );
 611                     break;
 612                 default:
 613                     i_id = 0;
 614                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 615                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 616                 }
 617             }
 618         }
 619 #undef audio_control
 620 #define spu_control \
 621     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 622
 623         /* Sub Picture ES */
 624
 625         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 626         {
 627             int i_position = 0;
 628             u16 i_id;
 629
 630 //            IfoPrintSpu( p_dvd, i );
 631             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 632
 633             if( spu_control & 0x80000000 )
 634             {
 635                 i_spu_nb++;
 636
 637                 /*  there are several streams for one spu */
 638                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 639                 {
 640                     /* 16:9 */
 641                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 642                     {
 643                     case 1:
 644                         i_position = spu_control & 0xff;
 645                         break;
 646                     case 2:
 647                         i_position = ( spu_control >> 8 ) & 0xff;
 648                         break;
 649                     default:
 650                         i_position = ( spu_control >> 16 ) & 0xff;
 651                         break;
 652                     }
 653                 }
 654                 else
 655                 {
 656                     /* 4:3 */
 657                     i_position = ( spu_control >> 24 ) & 0x7F;
 658                 }
 659
 660                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 661                 p_es = input_AddES( p_input,
 662                                     p_input->stream.pp_programs[0], i_id, 0 );
 663                 p_es->i_stream_id = 0xbd;
 664                 p_es->i_type = DVD_SPU_ES;
 665                 p_es->i_cat = SPU_ES;
 666                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 667                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 668             }
 669         }
 670 #undef spu_control
 671         if( p_main->b_audio )
 672         {
 673             /* For audio: first one if none or a not existing one specified */
 674             int i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 675             if( i_audio < 0 || i_audio > i_audio_nb )
 676             {
 677                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 678                 i_audio = 1;
 679             }
 680             if( i_audio > 0 && i_audio_nb > 0 )
 681             {
 682                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 683                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 684                       REQUESTED_AC3 ) )
 685                 {
 686                     int     i_ac3 = i_audio;
 687                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 688                              AC3_AUDIO_ES ) && ( i_ac3 <=
 689                              p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
 690                     {
 691                         i_ac3++;
 692                     }
 693                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 694                     {
 695                         input_SelectES( p_input,
 696                                         p_input->stream.pp_es[i_ac3] );
 697                     }
 698                 }
 699                 else
 700                 {
 701                     input_SelectES( p_input,
 702                                     p_input->stream.pp_es[i_audio] );
 703                 }
 704             }
 705         }
 706
 707         if( p_main->b_video )
 708         {
 709             /* for spu, default is none */
 710             int i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 711             if( i_spu < 0 || i_spu > i_spu_nb )
 712             {
 713                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 714                 i_spu = 0;
 715             }
 716             if( i_spu > 0 && i_spu_nb > 0 )
 717             {
 718                 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
 719                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 720             }
 721         }
 722     } /* i_title >= 0 */
 723     else
 724     {
 725         p_area = p_input->stream.p_selected_area;
 726     }
 727
 728     /*
 729      * Chapter selection
 730      */
 731
 732     if( p_area->i_part != p_dvd->i_chapter )
 733     {
 734         if( ( p_area->i_part > 0 ) &&
 735             ( p_area->i_part <= p_area->i_part_nb ))
 736         {
 737             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 738             pgc_id = p_vts->vts_ptt_srpt->title[
 739                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 740             pgn = p_vts->vts_ptt_srpt->title[
 741                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 742
 743             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 744
 745             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 746             p_dvd->i_chapter = p_area->i_part;
 747             DvdReadFindCell( p_dvd );
 748
 749             p_dvd->i_pack_len = 0;
 750             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 751                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 752         }
 753         else
 754         {
 755             p_area->i_part = p_dvd->i_chapter;
 756         }
 757     }
 758 #undef p_vts
 759 #undef p_vmg
 760
 761     if( p_area->i_angle != p_dvd->i_angle )
 762     {
 763         p_dvd->i_angle = p_area->i_angle;
 764
 765         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 766     }
 767     /* warn interface that something has changed */
 768     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 769     p_input->stream.b_seekable = 1;
 770     p_input->stream.b_changed = 1;
 771
 772     return 0;
 773 }
 774
 775
 776 /*****************************************************************************
 777  * DvdReadRead: reads data packets into the netlist.
 778  *****************************************************************************
 779  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 780  * EOF.
 781  *****************************************************************************/
 782 static int DvdReadRead( input_thread_t * p_input,
 783                         data_packet_t ** pp_data )
 784 {
 785     thread_dvd_data_t *     p_dvd;
 786     u8                      p_data[DVD_VIDEO_LB_LEN];
 787     struct iovec            p_vec[DVD_DATA_READ_ONCE];
 788     u8 *                    pi_cur;
 789     int                     i_blocks;
 790     int                     i_read;
 791     int                     i_iovec;
 792     int                     i_packet_size;
 793     int                     i_packet;
 794     int                     i_pos;
 795     data_packet_t *         p_data_p;
 796
 797     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 798
 799     *pp_data = NULL;
 800
 801     /*
 802      * Playback by cell in this pgc, starting at the cell for our chapter.
 803      */
 804
 805     /*
 806      * End of pack, we select the following one
 807      */
 808     if( ! p_dvd->i_pack_len )
 809     {
 810         /*
 811          * Read NAV packet.
 812          */
 813         if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 814                        1, p_data ) ) != 1 )
 815         {
 816             intf_ErrMsg( "dvdread error: read failed for block %d",
 817                          p_dvd->i_next_vobu );
 818             return -1;
 819         }
 820
 821         assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
 822
 823         /*
 824          * Parse the contained dsi packet.
 825          */
 826
 827         DvdReadHandleDSI( p_dvd, p_data );
 828
 829         /* End of File */
 830         if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 831         {
 832             return 1;
 833         }
 834
 835         assert( p_dvd->i_pack_len < 1024 );
 836         /* Ugly kludge: we send the pack block to the input for it
 837          * sometimes has a zero scr and restart the sync */
 838 //        p_dvd->i_cur_block ++;
 839         p_dvd->i_pack_len++;
 840
 841     }
 842
 843     /*
 844      * Compute the number of blocks to read
 845      */
 846     i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
 847              ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
 848     p_dvd->i_pack_len -= i_blocks;
 849
 850     /* Get iovecs */
 851     *pp_data = p_data_p = input_BuffersToIO( p_input->p_method_data, p_vec,
 852                                              DVD_DATA_READ_ONCE );
 853
 854     if ( p_data_p == NULL )
 855     {
 856         return( -1 );
 857     }
 858
 859     /* Reads from DVD */
 860     i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 861                              i_blocks, p_vec );
 862     if( i_read != i_blocks )
 863     {
 864         intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 865                      i_read, i_blocks, p_dvd->i_cur_block );
 866         return -1;
 867     }
 868
 869     p_dvd->i_cur_block += i_read;
 870 /*
 871     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 872 */
 873     i_packet = 0;
 874
 875     /* Read headers to compute payload length */
 876     for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
 877     {
 878         data_packet_t * p_current = p_data_p;
 879         i_pos = 0;
 880
 881         while( i_pos < DVD_LB_SIZE )
 882         {
 883             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 884
 885             /*default header */
 886             if( U32_AT( pi_cur ) != 0x1BA )
 887             {
 888                 /* That's the case for all packets, except pack header. */
 889                 i_packet_size = U16_AT( pi_cur + 4 );
 890             }
 891             else
 892             {
 893                 /* MPEG-2 Pack header. */
 894                 i_packet_size = 8;
 895             }
 896             if( i_pos != 0 )
 897             {
 898                 *pp_data = input_ShareBuffer( p_input->p_method_data,
 899                                               p_current );
 900             }
 901             else
 902             {
 903                 *pp_data = p_data_p;
 904                 p_data_p = p_data_p->p_next;
 905             }
 906
 907             (*pp_data)->p_payload_start = (*pp_data)->p_demux_start =
 908                     (*pp_data)->p_demux_start + i_pos;
 909
 910
 911             (*pp_data)->p_payload_end =
 912                     (*pp_data)->p_payload_start + i_packet_size + 6;
 913
 914             i_packet++;
 915             i_pos += i_packet_size + 6;
 916             pp_data = &(*pp_data)->p_next;
 917         }
 918     }
 919
 920     p_input->pf_delete_packet( p_input->p_method_data, p_data_p );
 921     if( i_packet != 0 )
 922     {
 923         *pp_data = NULL;
 924     }
 925
 926     vlc_mutex_lock( &p_input->stream.stream_lock );
 927
 928     p_input->stream.p_selected_area->i_tell =
 929         LB2OFF( p_dvd->i_cur_block ) -
 930             p_input->stream.p_selected_area->i_start;
 931
 932     if( p_dvd->b_eoc )
 933     {
 934         /* We modify i_part only at end of chapter not to erase
 935          * some modification from the interface */
 936         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 937         p_dvd->b_eoc = 0;
 938     }
 939
 940
 941     vlc_mutex_unlock( &p_input->stream.stream_lock );
 942
 943     return 0;
 944 }
 945 #undef p_pgc
 946
 947 /*****************************************************************************
 948  * DVDRewind : reads a stream backward
 949  *****************************************************************************/
 950 static int DvdReadRewind( input_thread_t * p_input )
 951 {
 952     return( -1 );
 953 }
 954
 955 /*****************************************************************************
 956  * DvdReadSeek : Goes to a given position on the stream.
 957  *****************************************************************************
 958  * This one is used by the input and translate chronological position from
 959  * input to logical position on the device.
 960  * The lock should be taken before calling this function.
 961  *****************************************************************************/
 962 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 963 {
 964     thread_dvd_data_t *     p_dvd;
 965     int                     i_lb;
 966     int                     i_tmp;
 967     int                     i_chapter = 0;
 968     int                     i_cell = 0;
 969     int                     i_vobu = 0;
 970     int                     i_sub_cell = 0;
 971
 972     i_off += p_input->stream.p_selected_area->i_start;
 973     i_lb = OFF2LB( i_off );
 974     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 975
 976     /* find cell */
 977     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 978     {
 979         i_cell++;
 980     }
 981
 982     /* find chapter */
 983     do
 984     {
 985         pgc_t *     p_pgc;
 986         int         pgc_id, pgn;
 987
 988         i_chapter++;
 989         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
 990                     p_dvd->i_ttn-1].ptt[i_chapter].pgcn;
 991         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
 992                     p_dvd->i_ttn-1].ptt[i_chapter].pgn;
 993
 994         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 995         i_tmp = p_pgc->program_map[pgn-1];
 996
 997     } while( i_tmp <= i_cell );
 998
 999     /* find vobu */
1000     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1001             <= i_lb )
1002     {
1003         i_vobu++;
1004     }
1005
1006     /* find sub_cell */
1007     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1008             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1009     {
1010         i_sub_cell++;
1011     }
1012
1013 /*
1014     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1015             i_cell, i_sub_cell,i_chapter, i_vobu,
1016             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1017             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1018             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1019 */
1020     p_dvd->i_cur_block = i_lb;
1021     p_dvd->i_next_vobu =
1022         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1023     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1024     p_dvd->i_cur_cell = i_cell;
1025     p_dvd->i_chapter = i_chapter;
1026     DvdReadFindCell( p_dvd );
1027
1028     p_input->stream.p_selected_area->i_tell =
1029         LB2OFF ( p_dvd->i_cur_block )
1030          - p_input->stream.p_selected_area->i_start;
1031     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1032
1033     return;
1034 }
1035
1036 /*****************************************************************************
1037  * DvdReadHandleDSI
1038  *****************************************************************************/
1039 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1040 {
1041     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1042
1043     /*
1044      * Determine where we go next.  These values are the ones we mostly
1045      * care about.
1046      */
1047     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1048
1049     /*
1050      * If we're not at the end of this cell, we can determine the next
1051      * VOBU to display using the VOBU_SRI information section of the
1052      * DSI.  Using this value correctly follows the current angle,
1053      * avoiding the doubled scenes in The Matrix, and makes our life
1054      * really happy.
1055      */
1056     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1057     {
1058 #if 1
1059         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1060         {
1061             case 0x4:
1062                 /* interleaved unit with no angle */
1063                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1064                 {
1065                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1066                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1067                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1068                 }
1069                 else
1070                 {
1071                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1072                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1073                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1074                 }
1075                 break;
1076             case 0x5:
1077                 /* vobu is end of ilvu */
1078                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1079                 {
1080                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1081                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1082                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1083
1084                     break;
1085                 }
1086             case 0x6:
1087                 /* vobu is beginning of ilvu */
1088             case 0x9:
1089                 /* next scr is 0 */
1090             case 0xa:
1091                 /* entering interleaved section */
1092             case 0x8:
1093                 /* non interleaved cells in interleaved section */
1094             default:
1095                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1096                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1097                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1098                 break;
1099         }
1100 #else
1101         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1102             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1103         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1104 #endif
1105     }
1106     else
1107     {
1108         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1109         DvdReadFindCell( p_dvd );
1110
1111         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1112         p_dvd->i_next_vobu =
1113             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1114     }
1115
1116 #if 0
1117     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1118             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1119             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1120             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1121             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1122             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1123
1124     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1125             p_dvd->dsi_pack.sml_pbi.category,
1126             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1127             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1128             p_dvd->dsi_pack.sml_pbi.size );
1129
1130     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1131             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1132             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1133             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1134 #endif
1135 }
1136
1137 /*****************************************************************************
1138  * DvdReadFindCell
1139  *****************************************************************************/
1140 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1141 {
1142     int         pgc_id, pgn;
1143     int         i = 0;
1144     pgc_t *     p_pgc;
1145 #define cell p_dvd->p_cur_pgc->cell_playback
1146     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1147     {
1148 #if 0
1149         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1150         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1151 #else
1152         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1153
1154         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1155         {
1156             i++;
1157         }
1158         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1159 #endif
1160     }
1161     else
1162     {
1163         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1164     }
1165 #undef cell
1166     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1167                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgcn;
1168     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1169                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgn;
1170     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1171
1172     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1173     {
1174         p_dvd->i_chapter++;
1175         p_dvd->b_eoc = 1;
1176     }
1177 }