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 1.12 2001/12/30 07:09:55 sam 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 /*****************************************************************************
  32  * Preamble
  33  *****************************************************************************/
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36
  37 #include <videolan/vlc.h>
  38
  39 #ifdef HAVE_UNISTD_H
  40 #   include <unistd.h>
  41 #endif
  42
  43 #include <fcntl.h>
  44 #include <sys/types.h>
  45 #include <string.h>
  46 #include <errno.h>
  47 #include <assert.h>
  48
  49 #ifdef STRNCASECMP_IN_STRINGS_H
  50 #   include <strings.h>
  51 #endif
  52
  53 #if defined( WIN32 )
  54 #   include <io.h>                                                 /* read() */
  55 #else
  56 #   include <sys/uio.h>                                      /* struct iovec */
  57 #endif
  58
  59 #if defined( WIN32 )
  60 #   include "input_iovec.h"
  61 #endif
  62
  63 #include "stream_control.h"
  64 #include "input_ext-intf.h"
  65 #include "input_ext-dec.h"
  66 #include "input_ext-plugins.h"
  67
  68 #include "input_dvdread.h"
  69
  70 #include "iso_lang.h"
  71
  72 #include "debug.h"
  73
  74 /* how many blocks DVDRead will read in each loop */
  75 #define DVD_BLOCK_READ_ONCE 64
  76 #define DVD_DATA_READ_ONCE  (4 * DVD_BLOCK_READ_ONCE)
  77
  78 /*****************************************************************************
  79  * Local prototypes
  80  *****************************************************************************/
  81 /* called from outside */
  82 static int  DvdReadProbe    ( probedata_t *p_data );
  83 static void DvdReadInit     ( struct input_thread_s * );
  84 static void DvdReadEnd      ( struct input_thread_s * );
  85 static void DvdReadOpen     ( struct input_thread_s * );
  86 static void DvdReadClose    ( struct input_thread_s * );
  87 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
  88 static int  DvdReadRead     ( struct input_thread_s *, data_packet_t ** );
  89 static void DvdReadSeek     ( struct input_thread_s *, off_t );
  90 static int  DvdReadRewind   ( struct input_thread_s * );
  91
  92 /* called only from here */
  93 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
  94 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
  95
  96 /*****************************************************************************
  97  * Declare a buffer manager
  98  *****************************************************************************/
  99 #define FLAGS           BUFFERS_UNIQUE_SIZE
 100 #define NB_LIFO         1
 101 DECLARE_BUFFERS_SHARED( FLAGS, NB_LIFO );
 102 DECLARE_BUFFERS_INIT( FLAGS, NB_LIFO );
 103 DECLARE_BUFFERS_END_SHARED( FLAGS, NB_LIFO );
 104 DECLARE_BUFFERS_NEWPACKET_SHARED( FLAGS, NB_LIFO );
 105 DECLARE_BUFFERS_DELETEPACKET_SHARED( FLAGS, NB_LIFO, 1000 );
 106 DECLARE_BUFFERS_NEWPES( FLAGS, NB_LIFO );
 107 DECLARE_BUFFERS_DELETEPES( FLAGS, NB_LIFO, 1000 );
 108 DECLARE_BUFFERS_TOIO( FLAGS, DVD_VIDEO_LB_LEN );
 109 DECLARE_BUFFERS_SHAREBUFFER( FLAGS );
 110
 111 /*****************************************************************************
 112  * Functions exported as capabilities. They are declared as static so that
 113  * we don't pollute the namespace too much.
 114  *****************************************************************************/
 115 void _M( input_getfunctions )( function_list_t * p_function_list )
 116 {
 117 #define input p_function_list->functions.input
 118     p_function_list->pf_probe = DvdReadProbe;
 119     input.pf_init             = DvdReadInit;
 120     input.pf_open             = DvdReadOpen;
 121     input.pf_close            = DvdReadClose;
 122     input.pf_end              = DvdReadEnd;
 123     input.pf_init_bit_stream  = InitBitstream;
 124     input.pf_read             = DvdReadRead;
 125     input.pf_set_area         = DvdReadSetArea;
 126     input.pf_demux            = input_DemuxPS;
 127     input.pf_new_packet       = input_NewPacket;
 128     input.pf_new_pes          = input_NewPES;
 129     input.pf_delete_packet    = input_DeletePacket;
 130     input.pf_delete_pes       = input_DeletePES;
 131     input.pf_rewind           = DvdReadRewind;
 132     input.pf_seek             = DvdReadSeek;
 133 #undef input
 134 }
 135
 136 /*
 137  * Data reading functions
 138  */
 139
 140 /*****************************************************************************
 141  * DvdReadProbe: verifies that the stream is a PS stream
 142  *****************************************************************************/
 143 static int DvdReadProbe( probedata_t *p_data )
 144 {
 145     input_thread_t * p_input = (input_thread_t *)p_data;
 146
 147     char * psz_name = p_input->p_source;
 148     int i_score = 5;
 149
 150     if( TestMethod( INPUT_METHOD_VAR, "dvdread" ) )
 151     {
 152         return( 999 );
 153     }
 154
 155     if( ( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ) )
 156     {
 157         /* If the user specified "dvdread:" then he probably wants
 158          * to use libdvdread */
 159         i_score = 100;
 160         psz_name += 4;
 161     }
 162
 163     return( i_score );
 164 }
 165
 166 /*****************************************************************************
 167  * DvdReadInit: initializes DVD structures
 168  *****************************************************************************/
 169 static void DvdReadInit( input_thread_t * p_input )
 170 {
 171     thread_dvd_data_t *  p_dvd;
 172     input_area_t *       p_area;
 173     int                  i_title;
 174     int                  i_chapter;
 175     int                  i;
 176
 177     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 178     if( p_dvd == NULL )
 179     {
 180         intf_ErrMsg( "dvdread error: out of memory" );
 181         p_input->b_error = 1;
 182         return;
 183     }
 184
 185     /* we take the pointer to dvd_reader_t back  */
 186     p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
 187     p_dvd->p_title = NULL;
 188     p_dvd->p_vts_file = NULL;
 189
 190     p_input->p_plugin_data = (void *)p_dvd;
 191
 192     if( (p_input->p_method_data = input_BuffersInit()) == NULL )
 193     {
 194         free( p_dvd );
 195         p_input->b_error = 1;
 196         return;
 197     }
 198
 199     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 200      * DVD_DATA_READ_ONCE at most */
 201     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 202
 203     /* Ifo allocation & initialisation */
 204     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 205     {
 206         intf_ErrMsg( "dvdread error: can't open VMG info" );
 207         input_BuffersEnd( p_input->p_method_data );
 208         free( p_dvd );
 209         p_input->b_error = 1;
 210         return;
 211     }
 212     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 213
 214     /* Set stream and area data */
 215     vlc_mutex_lock( &p_input->stream.stream_lock );
 216
 217     /* Initialize ES structures */
 218     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 219
 220     /* disc input method */
 221     p_input->stream.i_method = INPUT_METHOD_DVD;
 222
 223 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 224     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 225
 226 #define area p_input->stream.pp_areas
 227     /* We start from 1 here since the default area 0
 228      * is reserved for video_ts.vob */
 229     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 230     {
 231         input_AddArea( p_input );
 232
 233         /* Titles are Program Chains */
 234         area[i]->i_id = i;
 235
 236         /* Absolute start offset and size
 237          * We can only set that with vts ifo, so we do it during the
 238          * first call to DVDSetArea */
 239         area[i]->i_start = 0;
 240         area[i]->i_size = 0;
 241
 242         /* Number of chapters */
 243         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 244         area[i]->i_part = 1;
 245
 246         /* Number of angles */
 247         area[i]->i_angle_nb = 0;
 248         area[i]->i_angle = 1;
 249
 250         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 251     }
 252 #undef area
 253
 254     /* Get requested title - if none try the first title */
 255     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 256     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 257     {
 258         i_title = 1;
 259     }
 260
 261 #undef tt_srpt
 262
 263     /* Get requested chapter - if none defaults to first one */
 264     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 265     if( i_chapter <= 0 )
 266     {
 267         i_chapter = 1;
 268     }
 269
 270     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 271
 272     p_area = p_input->stream.pp_areas[i_title];
 273
 274     /* set title, chapter, audio and subpic */
 275     DvdReadSetArea( p_input, p_area );
 276
 277     vlc_mutex_unlock( &p_input->stream.stream_lock );
 278
 279     return;
 280 }
 281
 282 /*****************************************************************************
 283  * DvdReadOpen: open libdvdread
 284  *****************************************************************************/
 285 static void DvdReadOpen( struct input_thread_s *p_input )
 286 {
 287     dvd_reader_t    *p_dvdread;
 288
 289     vlc_mutex_lock( &p_input->stream.stream_lock );
 290
 291     /* If we are here we can control the pace... */
 292     p_input->stream.b_pace_control = 1;
 293
 294     p_input->stream.b_seekable = 1;
 295     p_input->stream.p_selected_area->i_size = 0;
 296
 297     p_input->stream.p_selected_area->i_tell = 0;
 298
 299     vlc_mutex_unlock( &p_input->stream.stream_lock );
 300
 301     /* XXX: put this shit in an access plugin */
 302     if( strlen( p_input->p_source ) > 8
 303          && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
 304     {
 305         p_dvdread = DVDOpen( p_input->p_source + 8 );
 306     }
 307     else
 308     {
 309         p_dvdread = DVDOpen( p_input->p_source );
 310     }
 311
 312     if( ! p_dvdread )
 313     {
 314         p_input->b_error = 1;
 315         return;
 316     }
 317
 318     /* the vlc input doesn't handle the file descriptor with libdvdread */
 319     p_input->i_handle = -1;
 320
 321     /* p_dvdread is stored in p_plugin_data until we have
 322      * malloc'ed a dvd_thread_data_t */
 323     p_input->p_plugin_data = (void *) p_dvdread;
 324 }
 325
 326 /*****************************************************************************
 327  * DvdReadClose: close libdvdread
 328  *****************************************************************************/
 329 static void DvdReadClose( struct input_thread_s *p_input )
 330 {
 331     DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
 332     free( p_input->p_plugin_data );
 333     p_input->p_plugin_data = NULL;
 334
 335 }
 336
 337 /*****************************************************************************
 338  * DvdReadEnd: frees unused data
 339  *****************************************************************************/
 340 static void DvdReadEnd( input_thread_t * p_input )
 341 {
 342     thread_dvd_data_t *     p_dvd;
 343
 344     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 345
 346     /* close libdvdread */
 347     DVDCloseFile( p_dvd->p_title );
 348     ifoClose( p_dvd->p_vts_file );
 349     ifoClose( p_dvd->p_vmg_file );
 350
 351     input_BuffersEnd( p_input->p_method_data );
 352 }
 353
 354 #define p_pgc         p_dvd->p_cur_pgc
 355
 356 /*****************************************************************************
 357  * DvdReadSetArea: initialize input data for title x, chapter y.
 358  * It should be called for each user navigation request.
 359  *****************************************************************************
 360  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 361  * Note that you have to take the lock before entering here.
 362  *****************************************************************************/
 363 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 364 {
 365     thread_dvd_data_t *  p_dvd;
 366     int                  pgc_id = 0;
 367     int                  pgn = 0;
 368
 369     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 370
 371     /* we can't use the interface slider until initilization is complete */
 372     p_input->stream.b_seekable = 0;
 373
 374     if( p_area != p_input->stream.p_selected_area )
 375     {
 376         es_descriptor_t *    p_es;
 377         int                  i_cell = 0;
 378         int                  i_audio_nb = 0;
 379         int                  i_spu_nb = 0;
 380         int                  i;
 381
 382 #define p_vmg         p_dvd->p_vmg_file
 383 #define p_vts         p_dvd->p_vts_file
 384         if( p_dvd->p_title != NULL )
 385         {
 386             DVDCloseFile( p_dvd->p_title );
 387         }
 388
 389         if( p_vts != NULL )
 390         {
 391             ifoClose( p_vts );
 392         }
 393
 394         /* Reset the Chapter position of the old title */
 395         p_input->stream.p_selected_area->i_part = 1;
 396
 397         /*
 398          *  We have to load all title information
 399          */
 400         /* Change the default area */
 401         p_input->stream.p_selected_area = p_area;
 402
 403         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 404             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 405             p_area->i_id );
 406
 407         /* ifo vts */
 408         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 409                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 410         {
 411             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 412             ifoClose( p_vmg );
 413             DVDClose( p_dvd->p_dvdread );
 414             p_input->b_error = 1;
 415             return -1;
 416         }
 417
 418         /* title position inside the selected vts */
 419         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 420
 421         /*
 422          * Set selected title start
 423          */
 424         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 425         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 426         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 427         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 428
 429         p_area->i_start =
 430             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 431
 432         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 433                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 434
 435         /*
 436          * Find title end
 437          */
 438         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 439
 440         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 441         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 442
 443         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 444                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 445
 446         /*
 447          * Set properties for current chapter
 448          */
 449         /* Remeber current chapter */
 450         p_dvd->i_chapter = p_area->i_part;
 451         p_dvd->b_eoc = 0;
 452
 453         pgc_id = p_vts->vts_ptt_srpt->title[
 454                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 455         pgn = p_vts->vts_ptt_srpt->title[
 456                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 457
 458         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 459         p_dvd->i_pack_len = 0;
 460         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 461         DvdReadFindCell( p_dvd );
 462
 463         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 464             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 465
 466         /*
 467          * Angle management
 468          */
 469         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 470         p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 471
 472         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 473         {
 474             p_area->i_angle = 1;
 475         }
 476         p_dvd->i_angle = p_area->i_angle;
 477         p_dvd->i_angle_nb = p_area->i_angle_nb;
 478
 479         /*
 480          * We've got enough info, time to open the title set data.
 481          */
 482         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 483             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 484             DVD_READ_TITLE_VOBS ) ) )
 485         {
 486             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 487                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 488             ifoClose( p_vts );
 489             ifoClose( p_vmg );
 490             DVDClose( p_dvd->p_dvdread );
 491             return -1;
 492         }
 493
 494 //        IfoPrintTitle( p_dvd );
 495
 496         /*
 497          * Destroy obsolete ES by reinitializing program 0
 498          * and find all ES in title with ifo data
 499          */
 500         if( p_input->stream.pp_programs != NULL )
 501         {
 502             /* We don't use input_EndStream here since
 503              * we keep area structures */
 504
 505             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 506             {
 507                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 508             }
 509
 510             free( p_input->stream.pp_selected_es );
 511             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 512
 513             p_input->stream.pp_selected_es = NULL;
 514             p_input->stream.i_selected_es_number = 0;
 515         }
 516
 517         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 518
 519         /* No PSM to read in DVD mode, we already have all information */
 520         p_input->stream.pp_programs[0]->b_is_ok = 1;
 521
 522         p_es = NULL;
 523
 524         /* ES 0 -> video MPEG2 */
 525 //        IfoPrintVideo( p_dvd );
 526
 527         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 528         p_es->i_stream_id = 0xe0;
 529         p_es->i_type = MPEG2_VIDEO_ES;
 530         p_es->i_cat = VIDEO_ES;
 531         if( p_main->b_video )
 532         {
 533             input_SelectES( p_input, p_es );
 534         }
 535
 536 #define audio_control \
 537     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 538         /* Audio ES, in the order they appear in .ifo */
 539         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 540         {
 541             int i_position = 0;
 542             u16 i_id;
 543
 544 //            IfoPrintAudio( p_dvd, i );
 545
 546             /* audio channel is active if first byte is 0x80 */
 547             if( audio_control & 0x8000 )
 548             {
 549                 i_audio_nb++;
 550                 i_position = ( audio_control & 0x7F00 ) >> 8;
 551
 552             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 553                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 554                 {
 555                 case 0x00:              /* AC3 */
 556                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 557                     p_es = input_AddES( p_input,
 558                                p_input->stream.pp_programs[0], i_id, 0 );
 559                     p_es->i_stream_id = 0xbd;
 560                     p_es->i_type = AC3_AUDIO_ES;
 561                     p_es->b_audio = 1;
 562                     p_es->i_cat = AUDIO_ES;
 563                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 564                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 565                     strcat( p_es->psz_desc, " (ac3)" );
 566
 567                     break;
 568                 case 0x02:
 569                 case 0x03:              /* MPEG audio */
 570                     i_id = 0xc0 + i_position;
 571                     p_es = input_AddES( p_input,
 572                                     p_input->stream.pp_programs[0], i_id, 0 );
 573                     p_es->i_stream_id = i_id;
 574                     p_es->i_type = MPEG2_AUDIO_ES;
 575                     p_es->b_audio = 1;
 576                     p_es->i_cat = AUDIO_ES;
 577                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 578                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 579                     strcat( p_es->psz_desc, " (mpeg)" );
 580
 581                     break;
 582                 case 0x04:              /* LPCM */
 583
 584                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 585                     p_es = input_AddES( p_input,
 586                                     p_input->stream.pp_programs[0], i_id, 0 );
 587                     p_es->i_stream_id = i_id;
 588                     p_es->i_type = LPCM_AUDIO_ES;
 589                     p_es->b_audio = 1;
 590                     p_es->i_cat = AUDIO_ES;
 591                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 592                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 593                     strcat( p_es->psz_desc, " (lpcm)" );
 594
 595                     break;
 596                 case 0x06:              /* DTS */
 597                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 598                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 599                                  "(0x%x)", i_id );
 600                     break;
 601                 default:
 602                     i_id = 0;
 603                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 604                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 605                 }
 606             }
 607         }
 608 #undef audio_control
 609 #define spu_control \
 610     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 611
 612         /* Sub Picture ES */
 613
 614         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 615         {
 616             int i_position = 0;
 617             u16 i_id;
 618
 619 //            IfoPrintSpu( p_dvd, i );
 620             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 621
 622             if( spu_control & 0x80000000 )
 623             {
 624                 i_spu_nb++;
 625
 626                 /*  there are several streams for one spu */
 627                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 628                 {
 629                     /* 16:9 */
 630                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 631                     {
 632                     case 1:
 633                         i_position = spu_control & 0xff;
 634                         break;
 635                     case 2:
 636                         i_position = ( spu_control >> 8 ) & 0xff;
 637                         break;
 638                     default:
 639                         i_position = ( spu_control >> 16 ) & 0xff;
 640                         break;
 641                     }
 642                 }
 643                 else
 644                 {
 645                     /* 4:3 */
 646                     i_position = ( spu_control >> 24 ) & 0x7F;
 647                 }
 648
 649                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 650                 p_es = input_AddES( p_input,
 651                                     p_input->stream.pp_programs[0], i_id, 0 );
 652                 p_es->i_stream_id = 0xbd;
 653                 p_es->i_type = DVD_SPU_ES;
 654                 p_es->i_cat = SPU_ES;
 655                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 656                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 657             }
 658         }
 659 #undef spu_control
 660         if( p_main->b_audio )
 661         {
 662             /* For audio: first one if none or a not existing one specified */
 663             int i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 664             if( i_audio < 0 || i_audio > i_audio_nb )
 665             {
 666                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 667                 i_audio = 1;
 668             }
 669             if( i_audio > 0 && i_audio_nb > 0 )
 670             {
 671                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 672                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 673                       REQUESTED_AC3 ) )
 674                 {
 675                     int     i_ac3 = i_audio;
 676                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 677                              AC3_AUDIO_ES ) && ( i_ac3 <=
 678                              p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
 679                     {
 680                         i_ac3++;
 681                     }
 682                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 683                     {
 684                         input_SelectES( p_input,
 685                                         p_input->stream.pp_es[i_ac3] );
 686                     }
 687                 }
 688                 else
 689                 {
 690                     input_SelectES( p_input,
 691                                     p_input->stream.pp_es[i_audio] );
 692                 }
 693             }
 694         }
 695
 696         if( p_main->b_video )
 697         {
 698             /* for spu, default is none */
 699             int i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 700             if( i_spu < 0 || i_spu > i_spu_nb )
 701             {
 702                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 703                 i_spu = 0;
 704             }
 705             if( i_spu > 0 && i_spu_nb > 0 )
 706             {
 707                 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
 708                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 709             }
 710         }
 711     } /* i_title >= 0 */
 712     else
 713     {
 714         p_area = p_input->stream.p_selected_area;
 715     }
 716
 717     /*
 718      * Chapter selection
 719      */
 720
 721     if( p_area->i_part != p_dvd->i_chapter )
 722     {
 723         if( ( p_area->i_part > 0 ) &&
 724             ( p_area->i_part <= p_area->i_part_nb ))
 725         {
 726             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 727             pgc_id = p_vts->vts_ptt_srpt->title[
 728                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 729             pgn = p_vts->vts_ptt_srpt->title[
 730                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 731
 732             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 733
 734             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 735             p_dvd->i_chapter = p_area->i_part;
 736             DvdReadFindCell( p_dvd );
 737
 738             p_dvd->i_pack_len = 0;
 739             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 740                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 741         }
 742         else
 743         {
 744             p_area->i_part = p_dvd->i_chapter;
 745         }
 746     }
 747 #undef p_vts
 748 #undef p_vmg
 749
 750     if( p_area->i_angle != p_dvd->i_angle )
 751     {
 752         p_dvd->i_angle = p_area->i_angle;
 753
 754         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 755     }
 756     /* warn interface that something has changed */
 757     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 758     p_input->stream.b_seekable = 1;
 759     p_input->stream.b_changed = 1;
 760
 761     return 0;
 762 }
 763
 764
 765 /*****************************************************************************
 766  * DvdReadRead: reads data packets into the netlist.
 767  *****************************************************************************
 768  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 769  * EOF.
 770  *****************************************************************************/
 771 static int DvdReadRead( input_thread_t * p_input,
 772                         data_packet_t ** pp_data )
 773 {
 774     thread_dvd_data_t *     p_dvd;
 775     u8                      p_data[DVD_VIDEO_LB_LEN];
 776     struct iovec            p_vec[DVD_DATA_READ_ONCE];
 777     u8 *                    pi_cur;
 778     int                     i_blocks;
 779     int                     i_read;
 780     int                     i_iovec;
 781     int                     i_packet_size;
 782     int                     i_packet;
 783     int                     i_pos;
 784     data_packet_t *         p_data_p;
 785
 786     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 787
 788     *pp_data = NULL;
 789
 790     /*
 791      * Playback by cell in this pgc, starting at the cell for our chapter.
 792      */
 793
 794     /*
 795      * End of pack, we select the following one
 796      */
 797     if( ! p_dvd->i_pack_len )
 798     {
 799         /*
 800          * Read NAV packet.
 801          */
 802         if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 803                        1, p_data ) ) != 1 )
 804         {
 805             intf_ErrMsg( "dvdread error: read failed for block %d",
 806                          p_dvd->i_next_vobu );
 807             return -1;
 808         }
 809
 810         assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
 811
 812         /*
 813          * Parse the contained dsi packet.
 814          */
 815
 816         DvdReadHandleDSI( p_dvd, p_data );
 817
 818         /* End of File */
 819         if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 820         {
 821             return 1;
 822         }
 823
 824         assert( p_dvd->i_pack_len < 1024 );
 825         /* Ugly kludge: we send the pack block to the input for it
 826          * sometimes has a zero scr and restart the sync */
 827 //        p_dvd->i_cur_block ++;
 828         p_dvd->i_pack_len++;
 829
 830     }
 831
 832     /*
 833      * Compute the number of blocks to read
 834      */
 835     i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
 836              ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
 837     p_dvd->i_pack_len -= i_blocks;
 838
 839     /* Get iovecs */
 840     *pp_data = p_data_p = input_BuffersToIO( p_input->p_method_data, p_vec,
 841                                              DVD_DATA_READ_ONCE );
 842
 843     if ( p_data_p == NULL )
 844     {
 845         return( -1 );
 846     }
 847
 848     /* Reads from DVD */
 849     i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 850                              i_blocks, p_vec );
 851     if( i_read != i_blocks )
 852     {
 853         intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 854                      i_read, i_blocks, p_dvd->i_cur_block );
 855         return -1;
 856     }
 857
 858     p_dvd->i_cur_block += i_read;
 859 /*
 860     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 861 */
 862     i_packet = 0;
 863
 864     /* Read headers to compute payload length */
 865     for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
 866     {
 867         data_packet_t * p_current = p_data_p;
 868         i_pos = 0;
 869
 870         while( i_pos < DVD_VIDEO_LB_LEN )
 871         {
 872             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 873
 874             /*default header */
 875             if( U32_AT( pi_cur ) != 0x1BA )
 876             {
 877                 /* That's the case for all packets, except pack header. */
 878                 i_packet_size = U16_AT( pi_cur + 4 );
 879             }
 880             else
 881             {
 882                 /* MPEG-2 Pack header. */
 883                 i_packet_size = 8;
 884             }
 885             if( i_pos != 0 )
 886             {
 887                 *pp_data = input_ShareBuffer( p_input->p_method_data,
 888                                               p_current );
 889             }
 890             else
 891             {
 892                 *pp_data = p_data_p;
 893                 p_data_p = p_data_p->p_next;
 894             }
 895
 896             (*pp_data)->p_payload_start = (*pp_data)->p_demux_start =
 897                     (*pp_data)->p_demux_start + i_pos;
 898
 899
 900             (*pp_data)->p_payload_end =
 901                     (*pp_data)->p_payload_start + i_packet_size + 6;
 902
 903             i_packet++;
 904             i_pos += i_packet_size + 6;
 905             pp_data = &(*pp_data)->p_next;
 906         }
 907     }
 908
 909     p_input->pf_delete_packet( p_input->p_method_data, p_data_p );
 910     *pp_data = NULL;
 911
 912     vlc_mutex_lock( &p_input->stream.stream_lock );
 913
 914     p_input->stream.p_selected_area->i_tell =
 915         LB2OFF( p_dvd->i_cur_block ) -
 916             p_input->stream.p_selected_area->i_start;
 917
 918     if( p_dvd->b_eoc )
 919     {
 920         /* We modify i_part only at end of chapter not to erase
 921          * some modification from the interface */
 922         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 923         p_dvd->b_eoc = 0;
 924     }
 925
 926
 927     vlc_mutex_unlock( &p_input->stream.stream_lock );
 928
 929     return 0;
 930 }
 931 #undef p_pgc
 932
 933 /*****************************************************************************
 934  * DVDRewind : reads a stream backward
 935  *****************************************************************************/
 936 static int DvdReadRewind( input_thread_t * p_input )
 937 {
 938     return( -1 );
 939 }
 940
 941 /*****************************************************************************
 942  * DvdReadSeek : Goes to a given position on the stream.
 943  *****************************************************************************
 944  * This one is used by the input and translate chronological position from
 945  * input to logical position on the device.
 946  * The lock should be taken before calling this function.
 947  *****************************************************************************/
 948 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 949 {
 950     thread_dvd_data_t *     p_dvd;
 951     int                     i_lb;
 952     int                     i_tmp;
 953     int                     i_chapter = 0;
 954     int                     i_cell = 0;
 955     int                     i_vobu = 0;
 956     int                     i_sub_cell = 0;
 957
 958     i_off += p_input->stream.p_selected_area->i_start;
 959     i_lb = OFF2LB( i_off );
 960     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 961
 962     /* find cell */
 963     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 964     {
 965         i_cell++;
 966     }
 967
 968     /* find chapter */
 969     do
 970     {
 971         pgc_t *     p_pgc;
 972         int         pgc_id, pgn;
 973
 974         i_chapter++;
 975         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
 976                     p_dvd->i_ttn-1].ptt[i_chapter].pgcn;
 977         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
 978                     p_dvd->i_ttn-1].ptt[i_chapter].pgn;
 979
 980         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 981         i_tmp = p_pgc->program_map[pgn-1];
 982
 983     } while( i_tmp <= i_cell );
 984
 985     /* find vobu */
 986     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
 987             <= i_lb )
 988     {
 989         i_vobu++;
 990     }
 991
 992     /* find sub_cell */
 993     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
 994             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
 995     {
 996         i_sub_cell++;
 997     }
 998
 999 /*
1000     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1001             i_cell, i_sub_cell,i_chapter, i_vobu,
1002             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1003             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1004             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1005 */
1006     p_dvd->i_cur_block = i_lb;
1007     p_dvd->i_next_vobu =
1008         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1009     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1010     p_dvd->i_cur_cell = i_cell;
1011     p_dvd->i_chapter = i_chapter;
1012     DvdReadFindCell( p_dvd );
1013
1014     p_input->stream.p_selected_area->i_tell =
1015         LB2OFF ( p_dvd->i_cur_block )
1016          - p_input->stream.p_selected_area->i_start;
1017     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1018
1019     return;
1020 }
1021
1022 /*****************************************************************************
1023  * DvdReadHandleDSI
1024  *****************************************************************************/
1025 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1026 {
1027     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1028
1029     /*
1030      * Determine where we go next.  These values are the ones we mostly
1031      * care about.
1032      */
1033     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1034
1035     /*
1036      * If we're not at the end of this cell, we can determine the next
1037      * VOBU to display using the VOBU_SRI information section of the
1038      * DSI.  Using this value correctly follows the current angle,
1039      * avoiding the doubled scenes in The Matrix, and makes our life
1040      * really happy.
1041      */
1042     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1043     {
1044 #if 1
1045         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1046         {
1047             case 0x4:
1048                 /* interleaved unit with no angle */
1049                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1050                 {
1051                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1052                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1053                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1054                 }
1055                 else
1056                 {
1057                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1058                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1059                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1060                 }
1061                 break;
1062             case 0x5:
1063                 /* vobu is end of ilvu */
1064                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1065                 {
1066                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1067                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1068                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1069
1070                     break;
1071                 }
1072             case 0x6:
1073                 /* vobu is beginning of ilvu */
1074             case 0x9:
1075                 /* next scr is 0 */
1076             case 0xa:
1077                 /* entering interleaved section */
1078             case 0x8:
1079                 /* non interleaved cells in interleaved section */
1080             default:
1081                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1082                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1083                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1084                 break;
1085         }
1086 #else
1087         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1088             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1089         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1090 #endif
1091     }
1092     else
1093     {
1094         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1095         DvdReadFindCell( p_dvd );
1096
1097         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1098         p_dvd->i_next_vobu =
1099             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1100     }
1101
1102 #if 0
1103     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1104             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1105             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1106             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1107             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1108             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1109
1110     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1111             p_dvd->dsi_pack.sml_pbi.category,
1112             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1113             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1114             p_dvd->dsi_pack.sml_pbi.size );
1115
1116     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1117             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1118             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1119             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1120 #endif
1121 }
1122
1123 /*****************************************************************************
1124  * DvdReadFindCell
1125  *****************************************************************************/
1126 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1127 {
1128     int         pgc_id, pgn;
1129     int         i = 0;
1130     pgc_t *     p_pgc;
1131 #define cell p_dvd->p_cur_pgc->cell_playback
1132     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1133     {
1134 #if 0
1135         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1136         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1137 #else
1138         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1139
1140         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1141         {
1142             i++;
1143         }
1144         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1145 #endif
1146     }
1147     else
1148     {
1149         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1150     }
1151 #undef cell
1152     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1153                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgcn;
1154     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1155                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgn;
1156     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1157
1158     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1159     {
1160         p_dvd->i_chapter++;
1161         p_dvd->b_eoc = 1;
1162     }
1163 }