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 1.24 2002/03/02 03:29:13 stef 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 <sys/stat.h>
  46 #include <string.h>
  47 #include <errno.h>
  48 #include <assert.h>
  49
  50 #ifdef STRNCASECMP_IN_STRINGS_H
  51 #   include <strings.h>
  52 #endif
  53
  54 #if defined( WIN32 )
  55 #   include <io.h>                                                 /* read() */
  56 #else
  57 #   include <sys/uio.h>                                      /* struct iovec */
  58 #endif
  59
  60 #if defined( WIN32 )
  61 #   include "input_iovec.h"
  62 #endif
  63
  64 #include "stream_control.h"
  65 #include "input_ext-intf.h"
  66 #include "input_ext-dec.h"
  67 #include "input_ext-plugins.h"
  68
  69 #include "input_dvdread.h"
  70
  71 #include "iso_lang.h"
  72
  73 #include "debug.h"
  74
  75 /* how many blocks DVDRead will read in each loop */
  76 #define DVD_BLOCK_READ_ONCE 64
  77
  78 /*****************************************************************************
  79  * Local prototypes
  80  *****************************************************************************/
  81 /* called from outside */
  82 static int  DvdReadInit     ( struct input_thread_s * );
  83 static void DvdReadEnd      ( struct input_thread_s * );
  84 static int  DvdReadDemux    ( struct input_thread_s * );
  85 static int  DvdReadRewind   ( struct input_thread_s * );
  86
  87 static int  DvdReadOpen     ( struct input_thread_s * );
  88 static void DvdReadClose    ( struct input_thread_s * );
  89 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
  90 static int  DvdReadSetProgram( struct input_thread_s *, pgrm_descriptor_t * );
  91 static int  DvdReadRead     ( struct input_thread_s *, byte_t *, size_t );
  92 static void DvdReadSeek     ( struct input_thread_s *, off_t );
  93
  94 /* called only from here */
  95 static void DvdReadLauchDecoders( input_thread_t * p_input );
  96 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
  97 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
  98
  99 /*****************************************************************************
 100  * Functions exported as capabilities. They are declared as static so that
 101  * we don't pollute the namespace too much.
 102  *****************************************************************************/
 103 void _M( access_getfunctions )( function_list_t * p_function_list )
 104 {
 105 #define access p_function_list->functions.access
 106     access.pf_open             = DvdReadOpen;
 107     access.pf_close            = DvdReadClose;
 108     access.pf_read             = DvdReadRead;
 109     access.pf_set_area         = DvdReadSetArea;
 110     access.pf_set_program      = DvdReadSetProgram;
 111     access.pf_seek             = DvdReadSeek;
 112 #undef access
 113 }
 114
 115 void _M( demux_getfunctions )( function_list_t * p_function_list )
 116 {
 117 #define demux p_function_list->functions.demux
 118     demux.pf_init             = DvdReadInit;
 119     demux.pf_end              = DvdReadEnd;
 120     demux.pf_demux            = DvdReadDemux;
 121     demux.pf_rewind           = DvdReadRewind;
 122 #undef demux
 123 }
 124
 125 /*
 126  * Data demux functions
 127  */
 128
 129 /*****************************************************************************
 130  * DvdReadInit: initializes DVD structures
 131  *****************************************************************************/
 132 static int DvdReadInit( input_thread_t * p_input )
 133 {
 134     if( strncmp( p_input->p_access_module->psz_name, "dvdread", 7 ) )
 135     {
 136         return -1;
 137     }
 138
 139     vlc_mutex_lock( &p_input->stream.stream_lock );
 140
 141     DvdReadLauchDecoders( p_input );
 142
 143     vlc_mutex_unlock( &p_input->stream.stream_lock );
 144
 145     return 0;
 146 }
 147
 148 /*****************************************************************************
 149  * DvdReadEnd: frees unused data
 150  *****************************************************************************/
 151 static void DvdReadEnd( input_thread_t * p_input )
 152 {
 153 }
 154
 155 /*****************************************************************************
 156  * DvdReadDemux
 157  *****************************************************************************/
 158 #define PEEK( SIZE )                                                        \
 159     i_result = input_Peek( p_input, &p_peek, SIZE );                        \
 160     if( i_result == -1 )                                                    \
 161     {                                                                       \
 162         return( -1 );                                                       \
 163     }                                                                       \
 164     else if( i_result < SIZE )                                              \
 165     {                                                                       \
 166         /* EOF */                                                           \
 167         return( 0 );                                                        \
 168     }
 169
 170 static int DvdReadDemux( input_thread_t * p_input )
 171 {
 172     int                 i;
 173     byte_t *            p_peek;
 174     data_packet_t *     p_data;
 175     ssize_t             i_result;
 176     int                 i_packet_size;
 177
 178
 179     /* Read headers to compute payload length */
 180     for( i = 0 ; i < DVD_BLOCK_READ_ONCE ; i++ )
 181     {
 182
 183         /* Read what we believe to be a packet header. */
 184         PEEK( 4 );
 185
 186         /* Default header */
 187         if( U32_AT( p_peek ) != 0x1BA )
 188         {
 189             /* That's the case for all packets, except pack header. */
 190             i_packet_size = U16_AT( p_peek + 4 );
 191         }
 192         else
 193         {
 194             /* MPEG-2 Pack header. */
 195             i_packet_size = 8;
 196         }
 197
 198         /* Fetch a packet of the appropriate size. */
 199         i_result = input_SplitBuffer( p_input, &p_data, i_packet_size + 6 );
 200         if( i_result <= 0 )
 201         {
 202             return( i_result );
 203         }
 204
 205         /* In MPEG-2 pack headers we still have to read stuffing bytes. */
 206         if( (p_data->p_demux_start[3] == 0xBA) && (i_packet_size == 8) )
 207         {
 208             size_t i_stuffing = (p_data->p_demux_start[13] & 0x7);
 209             /* Force refill of the input buffer - though we don't care
 210              * about p_peek. Please note that this is unoptimized. */
 211             PEEK( i_stuffing );
 212             p_input->p_current_data += i_stuffing;
 213         }
 214
 215         input_DemuxPS( p_input, p_data );
 216
 217     }
 218
 219     return i;
 220 }
 221
 222 /*****************************************************************************
 223  * DVDRewind : reads a stream backward
 224  *****************************************************************************/
 225 static int DvdReadRewind( input_thread_t * p_input )
 226 {
 227     return( -1 );
 228 }
 229
 230 /*
 231  * Data access functions
 232  */
 233
 234 /*****************************************************************************
 235  * DvdReadOpen: open libdvdread
 236  *****************************************************************************/
 237 static int DvdReadOpen( struct input_thread_s *p_input )
 238 {
 239     struct stat             stat_info;
 240     thread_dvd_data_t *     p_dvd;
 241     dvd_reader_t *          p_dvdread;
 242     input_area_t *          p_area;
 243     int                     i_title;
 244     int                     i_chapter;
 245     int                     i;
 246
 247     if( stat( p_input->psz_name, &stat_info ) == -1 )
 248     {
 249         intf_ErrMsg( "input error: cannot stat() device `%s' (%s)",
 250                      p_input->psz_name, strerror(errno));
 251         return( -1 );
 252     }
 253     if( !S_ISBLK(stat_info.st_mode) &&
 254         !S_ISCHR(stat_info.st_mode) &&
 255         !S_ISDIR(stat_info.st_mode) )
 256     {
 257         intf_WarnMsg( 3, "input : DvdRead plugin discarded"
 258                          " (not a valid source)" );
 259         return -1;
 260     }
 261
 262     p_dvdread = DVDOpen( p_input->psz_name );
 263     if( ! p_dvdread )
 264     {
 265         intf_ErrMsg( "dvdread error: libdvdcss can't open source" );
 266         return -1;
 267     }
 268
 269     /* set up input  */
 270     p_input->i_mtu = 0;
 271
 272     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 273     if( p_dvd == NULL )
 274     {
 275         intf_ErrMsg( "dvdread error: out of memory" );
 276         return -1;
 277     }
 278
 279     p_dvd->p_dvdread = p_dvdread;
 280     p_dvd->p_title = NULL;
 281     p_dvd->p_vts_file = NULL;
 282
 283     p_input->p_access_data = (void *)p_dvd;
 284
 285     /* Ifo allocation & initialisation */
 286     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 287     {
 288         intf_ErrMsg( "dvdread error: can't open VMG info" );
 289         free( p_dvd );
 290         return -1;
 291     }
 292     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 293
 294     /* Set stream and area data */
 295     vlc_mutex_lock( &p_input->stream.stream_lock );
 296
 297     p_input->stream.i_method = INPUT_METHOD_DVD;
 298
 299     /* If we are here we can control the pace... */
 300     p_input->stream.b_pace_control = 1;
 301     p_input->stream.b_seekable = 1;
 302
 303     p_input->stream.p_selected_area->i_size = 0;
 304     p_input->stream.p_selected_area->i_tell = 0;
 305
 306     /* Initialize ES structures */
 307     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 308
 309     /* disc input method */
 310     p_input->stream.i_method = INPUT_METHOD_DVD;
 311
 312 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 313     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 314
 315 #define area p_input->stream.pp_areas
 316     /* We start from 1 here since the default area 0
 317      * is reserved for video_ts.vob */
 318     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 319     {
 320         input_AddArea( p_input );
 321
 322         /* Titles are Program Chains */
 323         area[i]->i_id = i;
 324
 325         /* Absolute start offset and size
 326          * We can only set that with vts ifo, so we do it during the
 327          * first call to DVDSetArea */
 328         area[i]->i_start = 0;
 329         area[i]->i_size = 0;
 330
 331         /* Number of chapters */
 332         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 333         area[i]->i_part = 1;
 334
 335         /* Number of angles */
 336         area[i]->i_angle_nb = 0;
 337         area[i]->i_angle = 1;
 338
 339         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 340     }
 341 #undef area
 342
 343     /* Get requested title - if none try the first title */
 344     i_title = config_GetIntVariable( INPUT_TITLE_VAR );
 345     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 346     {
 347         i_title = 1;
 348     }
 349
 350 #undef tt_srpt
 351
 352     /* Get requested chapter - if none defaults to first one */
 353     i_chapter = config_GetIntVariable( INPUT_CHAPTER_VAR );
 354     if( i_chapter <= 0 )
 355     {
 356         i_chapter = 1;
 357     }
 358
 359     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 360
 361     p_area = p_input->stream.pp_areas[i_title];
 362
 363     /* set title, chapter, audio and subpic */
 364     if( DvdReadSetArea( p_input, p_area ) )
 365     {
 366         vlc_mutex_unlock( &p_input->stream.stream_lock );
 367         return -1;
 368     }
 369
 370     vlc_mutex_unlock( &p_input->stream.stream_lock );
 371
 372     return 0;
 373 }
 374
 375 /*****************************************************************************
 376  * DvdReadClose: close libdvdread
 377  *****************************************************************************/
 378 static void DvdReadClose( struct input_thread_s *p_input )
 379 {
 380     thread_dvd_data_t *     p_dvd;
 381
 382     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 383
 384     /* close libdvdread */
 385     DVDCloseFile( p_dvd->p_title );
 386     ifoClose( p_dvd->p_vts_file );
 387     ifoClose( p_dvd->p_vmg_file );
 388
 389     DVDClose( p_dvd->p_dvdread );
 390     free( p_dvd );
 391     p_input->p_access_data = NULL;
 392
 393 }
 394
 395 /*****************************************************************************
 396  * DvdReadSetProgram: Does nothing, a DVD is mono-program
 397  *****************************************************************************/
 398 static int DvdReadSetProgram( input_thread_t * p_input,
 399                               pgrm_descriptor_t * p_program )
 400 {
 401     return 0;
 402 }
 403
 404 #define p_pgc         p_dvd->p_cur_pgc
 405
 406 /*****************************************************************************
 407  * DvdReadSetArea: initialize input data for title x, chapter y.
 408  * It should be called for each user navigation request.
 409  *****************************************************************************
 410  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 411  * Note that you have to take the lock before entering here.
 412  *****************************************************************************/
 413 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 414 {
 415     thread_dvd_data_t *  p_dvd;
 416     int                  pgc_id = 0;
 417     int                  pgn = 0;
 418
 419     p_dvd = (thread_dvd_data_t*)p_input->p_access_data;
 420
 421     /* we can't use the interface slider until initilization is complete */
 422     p_input->stream.b_seekable = 0;
 423
 424     if( p_area != p_input->stream.p_selected_area )
 425     {
 426         es_descriptor_t *    p_es;
 427         int                  i_cell = 0;
 428         int                  i_audio_nb = 0;
 429         int                  i_spu_nb = 0;
 430         int                  i;
 431
 432 #define p_vmg         p_dvd->p_vmg_file
 433 #define p_vts         p_dvd->p_vts_file
 434         if( p_dvd->p_title != NULL )
 435         {
 436             DVDCloseFile( p_dvd->p_title );
 437         }
 438
 439         if( p_vts != NULL )
 440         {
 441             ifoClose( p_vts );
 442         }
 443
 444         /* Reset the Chapter position of the old title */
 445         p_input->stream.p_selected_area->i_part = 1;
 446
 447         /*
 448          *  We have to load all title information
 449          */
 450         /* Change the default area */
 451         p_input->stream.p_selected_area = p_area;
 452
 453         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 454             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 455             p_area->i_id );
 456
 457         /* ifo vts */
 458         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 459                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 460         {
 461             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 462             ifoClose( p_vmg );
 463             DVDClose( p_dvd->p_dvdread );
 464             return -1;
 465         }
 466
 467         /* title position inside the selected vts */
 468         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 469
 470         /*
 471          * Set selected title start
 472          */
 473         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 474         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 475         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 476         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 477
 478         p_area->i_start =
 479             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 480
 481         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 482                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 483
 484         /*
 485          * Find title end
 486          */
 487         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 488
 489         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 490         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 491
 492         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 493                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 494
 495         /*
 496          * Set properties for current chapter
 497          */
 498         /* Remeber current chapter */
 499         p_dvd->i_chapter = p_area->i_part;
 500         p_dvd->b_eoc = 0;
 501
 502         pgc_id = p_vts->vts_ptt_srpt->title[
 503                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 504         pgn = p_vts->vts_ptt_srpt->title[
 505                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 506
 507         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 508         p_dvd->i_pack_len = 0;
 509         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 510         DvdReadFindCell( p_dvd );
 511
 512         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 513             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 514
 515         /*
 516          * Angle management
 517          */
 518         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 519         p_area->i_angle = config_GetIntVariable( INPUT_ANGLE_VAR );
 520
 521         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 522         {
 523             p_area->i_angle = 1;
 524         }
 525         p_dvd->i_angle = p_area->i_angle;
 526         p_dvd->i_angle_nb = p_area->i_angle_nb;
 527
 528         /*
 529          * We've got enough info, time to open the title set data.
 530          */
 531         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 532             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 533             DVD_READ_TITLE_VOBS ) ) )
 534         {
 535             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 536                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 537             ifoClose( p_vts );
 538             ifoClose( p_vmg );
 539             DVDClose( p_dvd->p_dvdread );
 540             return -1;
 541         }
 542
 543 //        IfoPrintTitle( p_dvd );
 544
 545         /*
 546          * Destroy obsolete ES by reinitializing program 0
 547          * and find all ES in title with ifo data
 548          */
 549         if( p_input->stream.pp_programs != NULL )
 550         {
 551             /* We don't use input_EndStream here since
 552              * we keep area structures */
 553
 554             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 555             {
 556                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 557             }
 558
 559             free( p_input->stream.pp_selected_es );
 560             input_DelProgram( p_input, p_input->stream.p_selected_program );
 561
 562             p_input->stream.pp_selected_es = NULL;
 563             p_input->stream.i_selected_es_number = 0;
 564         }
 565
 566         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 567         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 568
 569         /* No PSM to read in DVD mode, we already have all information */
 570         p_input->stream.p_selected_program->b_is_ok = 1;
 571
 572         p_es = NULL;
 573
 574         /* ES 0 -> video MPEG2 */
 575 //        IfoPrintVideo( p_dvd );
 576
 577         p_es = input_AddES( p_input, p_input->stream.p_selected_program, 0xe0, 0 );
 578         p_es->i_stream_id = 0xe0;
 579         p_es->i_type = MPEG2_VIDEO_ES;
 580         p_es->i_cat = VIDEO_ES;
 581
 582 #define audio_control \
 583     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 584         /* Audio ES, in the order they appear in .ifo */
 585         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 586         {
 587             int i_position = 0;
 588             u16 i_id;
 589
 590 //            IfoPrintAudio( p_dvd, i );
 591
 592             /* audio channel is active if first byte is 0x80 */
 593             if( audio_control & 0x8000 )
 594             {
 595                 i_audio_nb++;
 596                 i_position = ( audio_control & 0x7F00 ) >> 8;
 597
 598             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 599                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 600                 {
 601                 case 0x00:              /* AC3 */
 602                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 603                     p_es = input_AddES( p_input,
 604                                p_input->stream.p_selected_program, i_id, 0 );
 605                     p_es->i_stream_id = 0xbd;
 606                     p_es->i_type = AC3_AUDIO_ES;
 607                     p_es->b_audio = 1;
 608                     p_es->i_cat = AUDIO_ES;
 609                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 610                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 611                     strcat( p_es->psz_desc, " (ac3)" );
 612
 613                     break;
 614                 case 0x02:
 615                 case 0x03:              /* MPEG audio */
 616                     i_id = 0xc0 + i_position;
 617                     p_es = input_AddES( p_input,
 618                                     p_input->stream.p_selected_program, i_id, 0 );
 619                     p_es->i_stream_id = i_id;
 620                     p_es->i_type = MPEG2_AUDIO_ES;
 621                     p_es->b_audio = 1;
 622                     p_es->i_cat = AUDIO_ES;
 623                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 624                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 625                     strcat( p_es->psz_desc, " (mpeg)" );
 626
 627                     break;
 628                 case 0x04:              /* LPCM */
 629
 630                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 631                     p_es = input_AddES( p_input,
 632                                     p_input->stream.p_selected_program, i_id, 0 );
 633                     p_es->i_stream_id = i_id;
 634                     p_es->i_type = LPCM_AUDIO_ES;
 635                     p_es->b_audio = 1;
 636                     p_es->i_cat = AUDIO_ES;
 637                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 638                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 639                     strcat( p_es->psz_desc, " (lpcm)" );
 640
 641                     break;
 642                 case 0x06:              /* DTS */
 643                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 644                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 645                                  "(0x%x)", i_id );
 646                     break;
 647                 default:
 648                     i_id = 0;
 649                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 650                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 651                 }
 652             }
 653         }
 654 #undef audio_control
 655 #define spu_control \
 656     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 657
 658         /* Sub Picture ES */
 659
 660         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 661         {
 662             int i_position = 0;
 663             u16 i_id;
 664
 665 //            IfoPrintSpu( p_dvd, i );
 666             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 667
 668             if( spu_control & 0x80000000 )
 669             {
 670                 i_spu_nb++;
 671
 672                 /*  there are several streams for one spu */
 673                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 674                 {
 675                     /* 16:9 */
 676                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 677                     {
 678                     case 1:
 679                         i_position = spu_control & 0xff;
 680                         break;
 681                     case 2:
 682                         i_position = ( spu_control >> 8 ) & 0xff;
 683                         break;
 684                     default:
 685                         i_position = ( spu_control >> 16 ) & 0xff;
 686                         break;
 687                     }
 688                 }
 689                 else
 690                 {
 691                     /* 4:3 */
 692                     i_position = ( spu_control >> 24 ) & 0x7F;
 693                 }
 694
 695                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 696                 p_es = input_AddES( p_input,
 697                                     p_input->stream.p_selected_program, i_id, 0 );
 698                 p_es->i_stream_id = 0xbd;
 699                 p_es->i_type = DVD_SPU_ES;
 700                 p_es->i_cat = SPU_ES;
 701                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 702                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 703             }
 704         }
 705 #undef spu_control
 706
 707         /* FIXME: hack to check that the demuxer is ready, and set
 708          * the decoders */
 709         if( p_input->p_demux_module )
 710         {
 711             DvdReadLauchDecoders( p_input );
 712         }
 713
 714     } /* i_title >= 0 */
 715     else
 716     {
 717         p_area = p_input->stream.p_selected_area;
 718     }
 719
 720     /*
 721      * Chapter selection
 722      */
 723
 724     if( p_area->i_part != p_dvd->i_chapter )
 725     {
 726         if( ( p_area->i_part > 0 ) &&
 727             ( p_area->i_part <= p_area->i_part_nb ))
 728         {
 729             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 730             pgc_id = p_vts->vts_ptt_srpt->title[
 731                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 732             pgn = p_vts->vts_ptt_srpt->title[
 733                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 734
 735             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 736
 737             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 738             p_dvd->i_chapter = p_area->i_part;
 739             DvdReadFindCell( p_dvd );
 740
 741             p_dvd->i_pack_len = 0;
 742             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 743                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 744         }
 745         else
 746         {
 747             p_area->i_part = p_dvd->i_chapter;
 748         }
 749     }
 750 #undef p_vts
 751 #undef p_vmg
 752
 753     if( p_area->i_angle != p_dvd->i_angle )
 754     {
 755         p_dvd->i_angle = p_area->i_angle;
 756
 757         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 758     }
 759     /* warn interface that something has changed */
 760     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 761     p_input->stream.b_seekable = 1;
 762     p_input->stream.b_changed = 1;
 763
 764     return 0;
 765 }
 766
 767
 768 /*****************************************************************************
 769  * DvdReadRead: reads data packets into the netlist.
 770  *****************************************************************************
 771  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 772  * EOF.
 773  *****************************************************************************/
 774 static int DvdReadRead( input_thread_t * p_input,
 775                         byte_t * p_buffer, size_t i_count )
 776 {
 777     thread_dvd_data_t *     p_dvd;
 778     byte_t *                p_buf;
 779     int                     i_blocks_once;
 780     int                     i_blocks;
 781     int                     i_read;
 782     int                     i_read_total;
 783     boolean_t               b_eot = 0;
 784
 785     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 786     p_buf = p_buffer;
 787
 788     /*
 789      * Playback by cell in this pgc, starting at the cell for our chapter.
 790      */
 791     i_blocks = OFF2LB( i_count );
 792     i_read_total = 0;
 793     i_read = 0;
 794
 795     while( i_blocks )
 796     {
 797         /*
 798          * End of pack, we select the following one
 799          */
 800         if( ! p_dvd->i_pack_len )
 801         {
 802             /*
 803              * Read NAV packet.
 804              */
 805             if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 806                            1, p_buf ) ) != 1 )
 807             {
 808                 intf_ErrMsg( "dvdread error: read failed for block %d",
 809                              p_dvd->i_next_vobu );
 810                 return -1;
 811             }
 812
 813             /* basic check to be sure we don't have a empty title
 814              * go to next title if so */
 815             //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
 816
 817             /*
 818              * Parse the contained dsi packet.
 819              */
 820
 821             DvdReadHandleDSI( p_dvd, p_buf );
 822
 823             /* End of File */
 824             if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 825             {
 826                 return 1;
 827             }
 828
 829             assert( p_dvd->i_pack_len < 1024 );
 830             /* FIXME: Ugly kludge: we send the pack block to the input for it
 831              * sometimes has a zero scr and restart the sync */
 832             p_dvd->i_cur_block ++;
 833             //p_dvd->i_pack_len++;
 834
 835             i_read_total++;
 836             p_buf += DVD_VIDEO_LB_LEN;
 837             i_blocks--;
 838         }
 839
 840         /*
 841          * Compute the number of blocks to read
 842          */
 843         i_blocks_once = p_dvd->i_pack_len >= i_blocks
 844                  ? i_blocks : p_dvd->i_pack_len;
 845         p_dvd->i_pack_len -= i_blocks_once;
 846
 847         /* Reads from DVD */
 848         i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 849                                 i_blocks_once, p_buf );
 850         if( i_read != i_blocks_once )
 851         {
 852             intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 853                          i_read, i_blocks_once, p_dvd->i_cur_block );
 854             return -1;
 855         }
 856
 857         i_blocks -= i_read;
 858         i_read_total += i_read;
 859         p_dvd->i_cur_block += i_read;
 860         p_buf += LB2OFF( i_read );
 861
 862     }
 863 /*
 864     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 865 */
 866
 867     vlc_mutex_lock( &p_input->stream.stream_lock );
 868
 869     p_input->stream.p_selected_area->i_tell =
 870         LB2OFF( p_dvd->i_cur_block ) -
 871             p_input->stream.p_selected_area->i_start;
 872
 873     if( p_dvd->b_eoc )
 874     {
 875         /* We modify i_part only at end of chapter not to erase
 876          * some modification from the interface */
 877         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 878         p_dvd->b_eoc = 0;
 879     }
 880
 881     if( p_input->stream.p_selected_area->i_tell
 882             >= p_input->stream.p_selected_area->i_size || b_eot )
 883     {
 884         if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
 885                         p_input->stream.i_area_nb )
 886         {
 887             /* EOF */
 888             vlc_mutex_unlock( &p_input->stream.stream_lock );
 889             return 1;
 890         }
 891
 892         /* EOT */
 893         intf_WarnMsg( 4, "dvd info: new title" );
 894         DvdReadSetArea( p_input, p_input->stream.pp_areas[
 895                         p_input->stream.p_selected_area->i_id+1] );
 896         vlc_mutex_unlock( &p_input->stream.stream_lock );
 897         return 0;
 898     }
 899
 900     vlc_mutex_unlock( &p_input->stream.stream_lock );
 901
 902     return LB2OFF( i_read_total );
 903 }
 904 #undef p_pgc
 905
 906 /*****************************************************************************
 907  * DvdReadSeek : Goes to a given position on the stream.
 908  *****************************************************************************
 909  * This one is used by the input and translate chronological position from
 910  * input to logical position on the device.
 911  * The lock should be taken before calling this function.
 912  *****************************************************************************/
 913 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 914 {
 915     thread_dvd_data_t *     p_dvd;
 916     int                     i_lb;
 917     int                     i_tmp;
 918     int                     i_chapter = 0;
 919     int                     i_cell = 0;
 920     int                     i_vobu = 0;
 921     int                     i_sub_cell = 0;
 922
 923     vlc_mutex_lock( &p_input->stream.stream_lock );
 924     i_off += p_input->stream.p_selected_area->i_start;
 925     vlc_mutex_unlock( &p_input->stream.stream_lock );
 926
 927     i_lb = OFF2LB( i_off );
 928     p_dvd = ( thread_dvd_data_t * )p_input->p_access_data;
 929
 930     /* find cell */
 931     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 932     {
 933         i_cell++;
 934     }
 935
 936     /* find chapter */
 937     do
 938     {
 939         pgc_t *     p_pgc;
 940         int         pgc_id, pgn;
 941
 942         i_chapter++;
 943         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
 944                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
 945         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
 946                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
 947
 948         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 949         i_tmp = p_pgc->program_map[pgn-1];
 950
 951     } while( i_tmp <= i_cell );
 952
 953     /* find vobu */
 954     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
 955             <= i_lb )
 956     {
 957         i_vobu++;
 958     }
 959
 960     /* find sub_cell */
 961     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
 962             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
 963     {
 964         i_sub_cell++;
 965     }
 966
 967 /*
 968     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
 969             i_cell, i_sub_cell,i_chapter, i_vobu,
 970             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
 971             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
 972             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
 973 */
 974     p_dvd->i_cur_block = i_lb;
 975     p_dvd->i_next_vobu =
 976         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
 977     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
 978     p_dvd->i_cur_cell = i_cell;
 979     p_dvd->i_chapter = i_chapter;
 980     DvdReadFindCell( p_dvd );
 981
 982     vlc_mutex_lock( &p_input->stream.stream_lock );
 983     p_input->stream.p_selected_area->i_tell =
 984         LB2OFF ( p_dvd->i_cur_block )
 985          - p_input->stream.p_selected_area->i_start;
 986     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 987     vlc_mutex_unlock( &p_input->stream.stream_lock );
 988
 989     return;
 990 }
 991
 992 /*****************************************************************************
 993  * DvdReadHandleDSI
 994  *****************************************************************************/
 995 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
 996 {
 997     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
 998
 999     /*
1000      * Determine where we go next.  These values are the ones we mostly
1001      * care about.
1002      */
1003     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1004
1005     /*
1006      * If we're not at the end of this cell, we can determine the next
1007      * VOBU to display using the VOBU_SRI information section of the
1008      * DSI.  Using this value correctly follows the current angle,
1009      * avoiding the doubled scenes in The Matrix, and makes our life
1010      * really happy.
1011      */
1012     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1013     {
1014 #if 1
1015         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1016         {
1017             case 0x4:
1018                 /* interleaved unit with no angle */
1019                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1020                 {
1021                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1022                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1023                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1024                 }
1025                 else
1026                 {
1027                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1028                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1029                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1030                 }
1031                 break;
1032             case 0x5:
1033                 /* vobu is end of ilvu */
1034                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1035                 {
1036                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1037                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1038                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1039
1040                     break;
1041                 }
1042             case 0x6:
1043                 /* vobu is beginning of ilvu */
1044             case 0x9:
1045                 /* next scr is 0 */
1046             case 0xa:
1047                 /* entering interleaved section */
1048             case 0x8:
1049                 /* non interleaved cells in interleaved section */
1050             default:
1051                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1052                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1053                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1054                 break;
1055         }
1056 #else
1057         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1058             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1059         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1060 #endif
1061     }
1062     else
1063     {
1064         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1065         DvdReadFindCell( p_dvd );
1066
1067         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1068         p_dvd->i_next_vobu =
1069             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1070     }
1071
1072 #if 0
1073     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1074             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1075             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1076             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1077             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1078             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1079
1080     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1081             p_dvd->dsi_pack.sml_pbi.category,
1082             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1083             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1084             p_dvd->dsi_pack.sml_pbi.size );
1085
1086     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1087             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1088             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1089             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1090 #endif
1091 }
1092
1093 /*****************************************************************************
1094  * DvdReadFindCell
1095  *****************************************************************************/
1096 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1097 {
1098     int         pgc_id, pgn;
1099     int         i = 0;
1100     pgc_t *     p_pgc;
1101 #define cell p_dvd->p_cur_pgc->cell_playback
1102     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1103     {
1104 #if 0
1105         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1106         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1107 #else
1108         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1109
1110         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1111         {
1112             i++;
1113         }
1114         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1115 #endif
1116     }
1117     else
1118     {
1119         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1120     }
1121 #undef cell
1122     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1123                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1124     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1125                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1126     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1127
1128     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1129     {
1130         p_dvd->i_chapter++;
1131         p_dvd->b_eoc = 1;
1132     }
1133 }
1134
1135 /*****************************************************************************
1136  * DvdReadLaunchDecoders
1137  *****************************************************************************/
1138 static void DvdReadLauchDecoders( input_thread_t * p_input )
1139 {
1140     thread_dvd_data_t *  p_dvd;
1141
1142     p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
1143
1144     if( p_main->b_video )
1145     {
1146         input_SelectES( p_input, p_input->stream.pp_es[0] );
1147     }
1148
1149     if( p_main->b_audio )
1150     {
1151         /* For audio: first one if none or a not existing one specified */
1152         int i_audio = config_GetIntVariable( INPUT_CHANNEL_VAR );
1153         if( i_audio < 0 /*|| i_audio > i_audio_nb*/ )
1154         {
1155             config_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
1156             i_audio = 1;
1157         }
1158         if( i_audio > 0/* && i_audio_nb > 0*/ )
1159         {
1160             if( config_GetIntVariable( AOUT_SPDIF_VAR ) ||
1161                 ( config_GetIntVariable( INPUT_AUDIO_VAR ) ==
1162                   REQUESTED_AC3 ) )
1163             {
1164                 int     i_ac3 = i_audio;
1165                 while( ( p_input->stream.pp_es[i_ac3]->i_type !=
1166                        AC3_AUDIO_ES ) && ( i_ac3 <=
1167                        p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams ) )
1168                 {
1169                     i_ac3++;
1170                 }
1171                 if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
1172                 {
1173                     input_SelectES( p_input,
1174                                     p_input->stream.pp_es[i_ac3] );
1175                 }
1176             }
1177             else
1178             {
1179                 input_SelectES( p_input,
1180                                 p_input->stream.pp_es[i_audio] );
1181             }
1182         }
1183     }
1184
1185     if( p_main->b_video )
1186     {
1187         /* for spu, default is none */
1188         int i_spu = config_GetIntVariable( INPUT_SUBTITLE_VAR );
1189         if( i_spu < 0 /*|| i_spu > i_spu_nb*/ )
1190         {
1191             config_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
1192             i_spu = 0;
1193         }
1194         if( i_spu > 0 /*&& i_spu_nb > 0*/ )
1195         {
1196             i_spu += p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams;
1197             input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
1198         }
1199     }
1200 }