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 1.23 2002/03/01 14:17:22 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 <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
  77 /*****************************************************************************
  78  * Local prototypes
  79  *****************************************************************************/
  80 /* called from outside */
  81 static int  DvdReadInit     ( struct input_thread_s * );
  82 static void DvdReadEnd      ( struct input_thread_s * );
  83 static int  DvdReadDemux    ( struct input_thread_s * );
  84 static int  DvdReadRewind   ( struct input_thread_s * );
  85
  86 static int  DvdReadOpen     ( struct input_thread_s * );
  87 static void DvdReadClose    ( struct input_thread_s * );
  88 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
  89 static int  DvdReadSetProgram( struct input_thread_s *, pgrm_descriptor_t * );
  90 static int  DvdReadRead     ( struct input_thread_s *, byte_t *, size_t );
  91 static void DvdReadSeek     ( struct input_thread_s *, off_t );
  92
  93 /* called only from here */
  94 static void DvdReadLauchDecoders( input_thread_t * p_input );
  95 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
  96 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
  97
  98 /*****************************************************************************
  99  * Functions exported as capabilities. They are declared as static so that
 100  * we don't pollute the namespace too much.
 101  *****************************************************************************/
 102 void _M( access_getfunctions )( function_list_t * p_function_list )
 103 {
 104 #define access p_function_list->functions.access
 105     access.pf_open             = DvdReadOpen;
 106     access.pf_close            = DvdReadClose;
 107     access.pf_read             = DvdReadRead;
 108     access.pf_set_area         = DvdReadSetArea;
 109     access.pf_set_program      = DvdReadSetProgram;
 110     access.pf_seek             = DvdReadSeek;
 111 #undef access
 112 }
 113
 114 void _M( demux_getfunctions )( function_list_t * p_function_list )
 115 {
 116 #define demux p_function_list->functions.demux
 117     demux.pf_init             = DvdReadInit;
 118     demux.pf_end              = DvdReadEnd;
 119     demux.pf_demux            = DvdReadDemux;
 120     demux.pf_rewind           = DvdReadRewind;
 121 #undef demux
 122 }
 123
 124 /*
 125  * Data demux functions
 126  */
 127
 128 /*****************************************************************************
 129  * DvdReadInit: initializes DVD structures
 130  *****************************************************************************/
 131 static int DvdReadInit( input_thread_t * p_input )
 132 {
 133     if( strncmp( p_input->p_access_module->psz_name, "dvdread", 7 ) )
 134     {
 135         return -1;
 136     }
 137
 138     vlc_mutex_lock( &p_input->stream.stream_lock );
 139
 140     DvdReadLauchDecoders( p_input );
 141
 142     vlc_mutex_unlock( &p_input->stream.stream_lock );
 143
 144     return 0;
 145 }
 146
 147 /*****************************************************************************
 148  * DvdReadEnd: frees unused data
 149  *****************************************************************************/
 150 static void DvdReadEnd( input_thread_t * p_input )
 151 {
 152 }
 153
 154 /*****************************************************************************
 155  * DvdReadDemux
 156  *****************************************************************************/
 157 #define PEEK( SIZE )                                                        \
 158     i_result = input_Peek( p_input, &p_peek, SIZE );                        \
 159     if( i_result == -1 )                                                    \
 160     {                                                                       \
 161         return( -1 );                                                       \
 162     }                                                                       \
 163     else if( i_result < SIZE )                                              \
 164     {                                                                       \
 165         /* EOF */                                                           \
 166         return( 0 );                                                        \
 167     }
 168
 169 static int DvdReadDemux( input_thread_t * p_input )
 170 {
 171     int                 i;
 172     byte_t *            p_peek;
 173     data_packet_t *     p_data;
 174     ssize_t             i_result;
 175     int                 i_packet_size;
 176
 177
 178     /* Read headers to compute payload length */
 179     for( i = 0 ; i < DVD_BLOCK_READ_ONCE ; i++ )
 180     {
 181
 182         /* Read what we believe to be a packet header. */
 183         PEEK( 4 );
 184
 185         /* Default header */
 186         if( U32_AT( p_peek ) != 0x1BA )
 187         {
 188             /* That's the case for all packets, except pack header. */
 189             i_packet_size = U16_AT( p_peek + 4 );
 190         }
 191         else
 192         {
 193             /* MPEG-2 Pack header. */
 194             i_packet_size = 8;
 195         }
 196
 197         /* Fetch a packet of the appropriate size. */
 198         i_result = input_SplitBuffer( p_input, &p_data, i_packet_size + 6 );
 199         if( i_result <= 0 )
 200         {
 201             return( i_result );
 202         }
 203
 204         /* In MPEG-2 pack headers we still have to read stuffing bytes. */
 205         if( (p_data->p_demux_start[3] == 0xBA) && (i_packet_size == 8) )
 206         {
 207             size_t i_stuffing = (p_data->p_demux_start[13] & 0x7);
 208             /* Force refill of the input buffer - though we don't care
 209              * about p_peek. Please note that this is unoptimized. */
 210             PEEK( i_stuffing );
 211             p_input->p_current_data += i_stuffing;
 212         }
 213
 214         input_DemuxPS( p_input, p_data );
 215
 216     }
 217
 218     return i;
 219 }
 220
 221 /*****************************************************************************
 222  * DVDRewind : reads a stream backward
 223  *****************************************************************************/
 224 static int DvdReadRewind( input_thread_t * p_input )
 225 {
 226     return( -1 );
 227 }
 228
 229 /*
 230  * Data access functions
 231  */
 232
 233 /*****************************************************************************
 234  * DvdReadOpen: open libdvdread
 235  *****************************************************************************/
 236 static int DvdReadOpen( struct input_thread_s *p_input )
 237 {
 238     struct stat             stat_info;
 239     thread_dvd_data_t *     p_dvd;
 240     dvd_reader_t *          p_dvdread;
 241     input_area_t *          p_area;
 242     int                     i_title;
 243     int                     i_chapter;
 244     int                     i;
 245
 246     if( stat( p_input->psz_name, &stat_info ) == -1 )
 247     {
 248         intf_ErrMsg( "input error: cannot stat() device `%s' (%s)",
 249                      p_input->psz_name, strerror(errno));
 250         return( -1 );
 251     }
 252     if( !S_ISBLK(stat_info.st_mode) &&
 253         !S_ISCHR(stat_info.st_mode) &&
 254         !S_ISDIR(stat_info.st_mode) )
 255     {
 256         intf_WarnMsg( 3, "input : DvdRead plugin discarded"
 257                          " (not a valid source)" );
 258         return -1;
 259     }
 260
 261     p_dvdread = DVDOpen( p_input->psz_name );
 262     if( ! p_dvdread )
 263     {
 264         intf_ErrMsg( "dvdread error: libdvdcss can't open source" );
 265         return -1;
 266     }
 267
 268     /* set up input  */
 269     p_input->i_mtu = 0;
 270
 271     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 272     if( p_dvd == NULL )
 273     {
 274         intf_ErrMsg( "dvdread error: out of memory" );
 275         return -1;
 276     }
 277
 278     p_dvd->p_dvdread = p_dvdread;
 279     p_dvd->p_title = NULL;
 280     p_dvd->p_vts_file = NULL;
 281
 282     p_input->p_access_data = (void *)p_dvd;
 283
 284     /* Ifo allocation & initialisation */
 285     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 286     {
 287         intf_ErrMsg( "dvdread error: can't open VMG info" );
 288         free( p_dvd );
 289         return -1;
 290     }
 291     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 292
 293     /* Set stream and area data */
 294     vlc_mutex_lock( &p_input->stream.stream_lock );
 295
 296     p_input->stream.i_method = INPUT_METHOD_DVD;
 297
 298     /* If we are here we can control the pace... */
 299     p_input->stream.b_pace_control = 1;
 300     p_input->stream.b_seekable = 1;
 301
 302     p_input->stream.p_selected_area->i_size = 0;
 303     p_input->stream.p_selected_area->i_tell = 0;
 304
 305     /* Initialize ES structures */
 306     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 307
 308     /* disc input method */
 309     p_input->stream.i_method = INPUT_METHOD_DVD;
 310
 311 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 312     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 313
 314 #define area p_input->stream.pp_areas
 315     /* We start from 1 here since the default area 0
 316      * is reserved for video_ts.vob */
 317     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 318     {
 319         input_AddArea( p_input );
 320
 321         /* Titles are Program Chains */
 322         area[i]->i_id = i;
 323
 324         /* Absolute start offset and size
 325          * We can only set that with vts ifo, so we do it during the
 326          * first call to DVDSetArea */
 327         area[i]->i_start = 0;
 328         area[i]->i_size = 0;
 329
 330         /* Number of chapters */
 331         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 332         area[i]->i_part = 1;
 333
 334         /* Number of angles */
 335         area[i]->i_angle_nb = 0;
 336         area[i]->i_angle = 1;
 337
 338         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 339     }
 340 #undef area
 341
 342     /* Get requested title - if none try the first title */
 343     i_title = config_GetIntVariable( INPUT_TITLE_VAR );
 344     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 345     {
 346         i_title = 1;
 347     }
 348
 349 #undef tt_srpt
 350
 351     /* Get requested chapter - if none defaults to first one */
 352     i_chapter = config_GetIntVariable( INPUT_CHAPTER_VAR );
 353     if( i_chapter <= 0 )
 354     {
 355         i_chapter = 1;
 356     }
 357
 358     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 359
 360     p_area = p_input->stream.pp_areas[i_title];
 361
 362     /* set title, chapter, audio and subpic */
 363     if( DvdReadSetArea( p_input, p_area ) )
 364     {
 365         vlc_mutex_unlock( &p_input->stream.stream_lock );
 366         return -1;
 367     }
 368
 369     vlc_mutex_unlock( &p_input->stream.stream_lock );
 370
 371     return 0;
 372 }
 373
 374 /*****************************************************************************
 375  * DvdReadClose: close libdvdread
 376  *****************************************************************************/
 377 static void DvdReadClose( struct input_thread_s *p_input )
 378 {
 379     thread_dvd_data_t *     p_dvd;
 380
 381     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 382
 383     /* close libdvdread */
 384     DVDCloseFile( p_dvd->p_title );
 385     ifoClose( p_dvd->p_vts_file );
 386     ifoClose( p_dvd->p_vmg_file );
 387
 388     DVDClose( p_dvd->p_dvdread );
 389     free( p_dvd );
 390     p_input->p_access_data = NULL;
 391
 392 }
 393
 394 /*****************************************************************************
 395  * DvdReadSetProgram: Does nothing, a DVD is mono-program
 396  *****************************************************************************/
 397 static int DvdReadSetProgram( input_thread_t * p_input,
 398                               pgrm_descriptor_t * p_program )
 399 {
 400     return 0;
 401 }
 402
 403 #define p_pgc         p_dvd->p_cur_pgc
 404
 405 /*****************************************************************************
 406  * DvdReadSetArea: initialize input data for title x, chapter y.
 407  * It should be called for each user navigation request.
 408  *****************************************************************************
 409  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 410  * Note that you have to take the lock before entering here.
 411  *****************************************************************************/
 412 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 413 {
 414     thread_dvd_data_t *  p_dvd;
 415     int                  pgc_id = 0;
 416     int                  pgn = 0;
 417
 418     p_dvd = (thread_dvd_data_t*)p_input->p_access_data;
 419
 420     /* we can't use the interface slider until initilization is complete */
 421     p_input->stream.b_seekable = 0;
 422
 423     if( p_area != p_input->stream.p_selected_area )
 424     {
 425         es_descriptor_t *    p_es;
 426         int                  i_cell = 0;
 427         int                  i_audio_nb = 0;
 428         int                  i_spu_nb = 0;
 429         int                  i;
 430
 431 #define p_vmg         p_dvd->p_vmg_file
 432 #define p_vts         p_dvd->p_vts_file
 433         if( p_dvd->p_title != NULL )
 434         {
 435             DVDCloseFile( p_dvd->p_title );
 436         }
 437
 438         if( p_vts != NULL )
 439         {
 440             ifoClose( p_vts );
 441         }
 442
 443         /* Reset the Chapter position of the old title */
 444         p_input->stream.p_selected_area->i_part = 1;
 445
 446         /*
 447          *  We have to load all title information
 448          */
 449         /* Change the default area */
 450         p_input->stream.p_selected_area = p_area;
 451
 452         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 453             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 454             p_area->i_id );
 455
 456         /* ifo vts */
 457         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 458                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 459         {
 460             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 461             ifoClose( p_vmg );
 462             DVDClose( p_dvd->p_dvdread );
 463             return -1;
 464         }
 465
 466         /* title position inside the selected vts */
 467         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 468
 469         /*
 470          * Set selected title start
 471          */
 472         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 473         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 474         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 475         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 476
 477         p_area->i_start =
 478             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 479
 480         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 481                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 482
 483         /*
 484          * Find title end
 485          */
 486         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 487
 488         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 489         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 490
 491         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 492                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 493
 494         /*
 495          * Set properties for current chapter
 496          */
 497         /* Remeber current chapter */
 498         p_dvd->i_chapter = p_area->i_part;
 499         p_dvd->b_eoc = 0;
 500
 501         pgc_id = p_vts->vts_ptt_srpt->title[
 502                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 503         pgn = p_vts->vts_ptt_srpt->title[
 504                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 505
 506         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 507         p_dvd->i_pack_len = 0;
 508         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 509         DvdReadFindCell( p_dvd );
 510
 511         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 512             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 513
 514         /*
 515          * Angle management
 516          */
 517         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 518         p_area->i_angle = config_GetIntVariable( INPUT_ANGLE_VAR );
 519
 520         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 521         {
 522             p_area->i_angle = 1;
 523         }
 524         p_dvd->i_angle = p_area->i_angle;
 525         p_dvd->i_angle_nb = p_area->i_angle_nb;
 526
 527         /*
 528          * We've got enough info, time to open the title set data.
 529          */
 530         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 531             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 532             DVD_READ_TITLE_VOBS ) ) )
 533         {
 534             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 535                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 536             ifoClose( p_vts );
 537             ifoClose( p_vmg );
 538             DVDClose( p_dvd->p_dvdread );
 539             return -1;
 540         }
 541
 542 //        IfoPrintTitle( p_dvd );
 543
 544         /*
 545          * Destroy obsolete ES by reinitializing program 0
 546          * and find all ES in title with ifo data
 547          */
 548         if( p_input->stream.pp_programs != NULL )
 549         {
 550             /* We don't use input_EndStream here since
 551              * we keep area structures */
 552
 553             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 554             {
 555                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 556             }
 557
 558             free( p_input->stream.pp_selected_es );
 559             input_DelProgram( p_input, p_input->stream.p_selected_program );
 560
 561             p_input->stream.pp_selected_es = NULL;
 562             p_input->stream.i_selected_es_number = 0;
 563         }
 564
 565         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 566         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
 567
 568         /* No PSM to read in DVD mode, we already have all information */
 569         p_input->stream.p_selected_program->b_is_ok = 1;
 570
 571         p_es = NULL;
 572
 573         /* ES 0 -> video MPEG2 */
 574 //        IfoPrintVideo( p_dvd );
 575
 576         p_es = input_AddES( p_input, p_input->stream.p_selected_program, 0xe0, 0 );
 577         p_es->i_stream_id = 0xe0;
 578         p_es->i_type = MPEG2_VIDEO_ES;
 579         p_es->i_cat = VIDEO_ES;
 580
 581 #define audio_control \
 582     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 583         /* Audio ES, in the order they appear in .ifo */
 584         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 585         {
 586             int i_position = 0;
 587             u16 i_id;
 588
 589 //            IfoPrintAudio( p_dvd, i );
 590
 591             /* audio channel is active if first byte is 0x80 */
 592             if( audio_control & 0x8000 )
 593             {
 594                 i_audio_nb++;
 595                 i_position = ( audio_control & 0x7F00 ) >> 8;
 596
 597             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 598                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 599                 {
 600                 case 0x00:              /* AC3 */
 601                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 602                     p_es = input_AddES( p_input,
 603                                p_input->stream.p_selected_program, i_id, 0 );
 604                     p_es->i_stream_id = 0xbd;
 605                     p_es->i_type = AC3_AUDIO_ES;
 606                     p_es->b_audio = 1;
 607                     p_es->i_cat = AUDIO_ES;
 608                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 609                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 610                     strcat( p_es->psz_desc, " (ac3)" );
 611
 612                     break;
 613                 case 0x02:
 614                 case 0x03:              /* MPEG audio */
 615                     i_id = 0xc0 + i_position;
 616                     p_es = input_AddES( p_input,
 617                                     p_input->stream.p_selected_program, i_id, 0 );
 618                     p_es->i_stream_id = i_id;
 619                     p_es->i_type = MPEG2_AUDIO_ES;
 620                     p_es->b_audio = 1;
 621                     p_es->i_cat = AUDIO_ES;
 622                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 623                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 624                     strcat( p_es->psz_desc, " (mpeg)" );
 625
 626                     break;
 627                 case 0x04:              /* LPCM */
 628
 629                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 630                     p_es = input_AddES( p_input,
 631                                     p_input->stream.p_selected_program, i_id, 0 );
 632                     p_es->i_stream_id = i_id;
 633                     p_es->i_type = LPCM_AUDIO_ES;
 634                     p_es->b_audio = 1;
 635                     p_es->i_cat = AUDIO_ES;
 636                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 637                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 638                     strcat( p_es->psz_desc, " (lpcm)" );
 639
 640                     break;
 641                 case 0x06:              /* DTS */
 642                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 643                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 644                                  "(0x%x)", i_id );
 645                     break;
 646                 default:
 647                     i_id = 0;
 648                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 649                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 650                 }
 651             }
 652         }
 653 #undef audio_control
 654 #define spu_control \
 655     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 656
 657         /* Sub Picture ES */
 658
 659         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 660         {
 661             int i_position = 0;
 662             u16 i_id;
 663
 664 //            IfoPrintSpu( p_dvd, i );
 665             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 666
 667             if( spu_control & 0x80000000 )
 668             {
 669                 i_spu_nb++;
 670
 671                 /*  there are several streams for one spu */
 672                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 673                 {
 674                     /* 16:9 */
 675                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 676                     {
 677                     case 1:
 678                         i_position = spu_control & 0xff;
 679                         break;
 680                     case 2:
 681                         i_position = ( spu_control >> 8 ) & 0xff;
 682                         break;
 683                     default:
 684                         i_position = ( spu_control >> 16 ) & 0xff;
 685                         break;
 686                     }
 687                 }
 688                 else
 689                 {
 690                     /* 4:3 */
 691                     i_position = ( spu_control >> 24 ) & 0x7F;
 692                 }
 693
 694                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 695                 p_es = input_AddES( p_input,
 696                                     p_input->stream.p_selected_program, i_id, 0 );
 697                 p_es->i_stream_id = 0xbd;
 698                 p_es->i_type = DVD_SPU_ES;
 699                 p_es->i_cat = SPU_ES;
 700                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 701                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 702             }
 703         }
 704 #undef spu_control
 705
 706         /* FIXME: hack to check that the demuxer is ready, and set
 707          * the decoders */
 708         if( p_input->p_demux_module )
 709         {
 710             DvdReadLauchDecoders( p_input );
 711         }
 712
 713     } /* i_title >= 0 */
 714     else
 715     {
 716         p_area = p_input->stream.p_selected_area;
 717     }
 718
 719     /*
 720      * Chapter selection
 721      */
 722
 723     if( p_area->i_part != p_dvd->i_chapter )
 724     {
 725         if( ( p_area->i_part > 0 ) &&
 726             ( p_area->i_part <= p_area->i_part_nb ))
 727         {
 728             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 729             pgc_id = p_vts->vts_ptt_srpt->title[
 730                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 731             pgn = p_vts->vts_ptt_srpt->title[
 732                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 733
 734             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 735
 736             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 737             p_dvd->i_chapter = p_area->i_part;
 738             DvdReadFindCell( p_dvd );
 739
 740             p_dvd->i_pack_len = 0;
 741             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 742                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 743         }
 744         else
 745         {
 746             p_area->i_part = p_dvd->i_chapter;
 747         }
 748     }
 749 #undef p_vts
 750 #undef p_vmg
 751
 752     if( p_area->i_angle != p_dvd->i_angle )
 753     {
 754         p_dvd->i_angle = p_area->i_angle;
 755
 756         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 757     }
 758     /* warn interface that something has changed */
 759     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 760     p_input->stream.b_seekable = 1;
 761     p_input->stream.b_changed = 1;
 762
 763     return 0;
 764 }
 765
 766
 767 /*****************************************************************************
 768  * DvdReadRead: reads data packets into the netlist.
 769  *****************************************************************************
 770  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 771  * EOF.
 772  *****************************************************************************/
 773 static int DvdReadRead( input_thread_t * p_input,
 774                         byte_t * p_buffer, size_t i_count )
 775 {
 776     thread_dvd_data_t *     p_dvd;
 777     byte_t *                p_buf;
 778     int                     i_blocks_once;
 779     int                     i_blocks;
 780     int                     i_read;
 781     int                     i_read_total;
 782     boolean_t               b_eot = 0;
 783
 784     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
 785     p_buf = p_buffer;
 786
 787     /*
 788      * Playback by cell in this pgc, starting at the cell for our chapter.
 789      */
 790     i_blocks = OFF2LB( i_count );
 791     i_read_total = 0;
 792     i_read = 0;
 793
 794     while( i_blocks )
 795     {
 796         /*
 797          * End of pack, we select the following one
 798          */
 799         if( ! p_dvd->i_pack_len )
 800         {
 801             /*
 802              * Read NAV packet.
 803              */
 804             if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 805                            1, p_buf ) ) != 1 )
 806             {
 807                 intf_ErrMsg( "dvdread error: read failed for block %d",
 808                              p_dvd->i_next_vobu );
 809                 return -1;
 810             }
 811
 812             /* basic check to be sure we don't have a empty title
 813              * go to next title if so */
 814             //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
 815
 816             /*
 817              * Parse the contained dsi packet.
 818              */
 819
 820             DvdReadHandleDSI( p_dvd, p_buf );
 821
 822             /* End of File */
 823             if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 824             {
 825                 return 1;
 826             }
 827
 828             assert( p_dvd->i_pack_len < 1024 );
 829             /* FIXME: Ugly kludge: we send the pack block to the input for it
 830              * sometimes has a zero scr and restart the sync */
 831             p_dvd->i_cur_block ++;
 832             //p_dvd->i_pack_len++;
 833
 834             i_read_total++;
 835             p_buf += DVD_VIDEO_LB_LEN;
 836             i_blocks--;
 837         }
 838
 839         /*
 840          * Compute the number of blocks to read
 841          */
 842         i_blocks_once = p_dvd->i_pack_len >= i_blocks
 843                  ? i_blocks : p_dvd->i_pack_len;
 844         p_dvd->i_pack_len -= i_blocks_once;
 845
 846         /* Reads from DVD */
 847         i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 848                                 i_blocks_once, p_buf );
 849         if( i_read != i_blocks_once )
 850         {
 851             intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 852                          i_read, i_blocks_once, p_dvd->i_cur_block );
 853             return -1;
 854         }
 855
 856         i_blocks -= i_read;
 857         i_read_total += i_read;
 858         p_dvd->i_cur_block += i_read;
 859         p_buf += LB2OFF( i_read );
 860
 861     }
 862 /*
 863     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 864 */
 865
 866     vlc_mutex_lock( &p_input->stream.stream_lock );
 867
 868     p_input->stream.p_selected_area->i_tell =
 869         LB2OFF( p_dvd->i_cur_block ) -
 870             p_input->stream.p_selected_area->i_start;
 871
 872     if( p_dvd->b_eoc )
 873     {
 874         /* We modify i_part only at end of chapter not to erase
 875          * some modification from the interface */
 876         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 877         p_dvd->b_eoc = 0;
 878     }
 879
 880     if( p_input->stream.p_selected_area->i_tell
 881             >= p_input->stream.p_selected_area->i_size || b_eot )
 882     {
 883         if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
 884                         p_input->stream.i_area_nb )
 885         {
 886             /* EOF */
 887             vlc_mutex_unlock( &p_input->stream.stream_lock );
 888             return 1;
 889         }
 890
 891         /* EOT */
 892         intf_WarnMsg( 4, "dvd info: new title" );
 893         DvdReadSetArea( p_input, p_input->stream.pp_areas[
 894                         p_input->stream.p_selected_area->i_id+1] );
 895         vlc_mutex_unlock( &p_input->stream.stream_lock );
 896         return 0;
 897     }
 898
 899     vlc_mutex_unlock( &p_input->stream.stream_lock );
 900
 901     return LB2OFF( i_read_total );
 902 }
 903 #undef p_pgc
 904
 905 /*****************************************************************************
 906  * DvdReadSeek : Goes to a given position on the stream.
 907  *****************************************************************************
 908  * This one is used by the input and translate chronological position from
 909  * input to logical position on the device.
 910  * The lock should be taken before calling this function.
 911  *****************************************************************************/
 912 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 913 {
 914     thread_dvd_data_t *     p_dvd;
 915     int                     i_lb;
 916     int                     i_tmp;
 917     int                     i_chapter = 0;
 918     int                     i_cell = 0;
 919     int                     i_vobu = 0;
 920     int                     i_sub_cell = 0;
 921
 922     vlc_mutex_lock( &p_input->stream.stream_lock );
 923     i_off += p_input->stream.p_selected_area->i_start;
 924     vlc_mutex_unlock( &p_input->stream.stream_lock );
 925
 926     i_lb = OFF2LB( i_off );
 927     p_dvd = ( thread_dvd_data_t * )p_input->p_access_data;
 928
 929     /* find cell */
 930     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 931     {
 932         i_cell++;
 933     }
 934
 935     /* find chapter */
 936     do
 937     {
 938         pgc_t *     p_pgc;
 939         int         pgc_id, pgn;
 940
 941         i_chapter++;
 942         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
 943                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
 944         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
 945                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
 946
 947         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 948         i_tmp = p_pgc->program_map[pgn-1];
 949
 950     } while( i_tmp <= i_cell );
 951
 952     /* find vobu */
 953     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
 954             <= i_lb )
 955     {
 956         i_vobu++;
 957     }
 958
 959     /* find sub_cell */
 960     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
 961             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
 962     {
 963         i_sub_cell++;
 964     }
 965
 966 /*
 967     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
 968             i_cell, i_sub_cell,i_chapter, i_vobu,
 969             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
 970             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
 971             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
 972 */
 973     p_dvd->i_cur_block = i_lb;
 974     p_dvd->i_next_vobu =
 975         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
 976     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
 977     p_dvd->i_cur_cell = i_cell;
 978     p_dvd->i_chapter = i_chapter;
 979     DvdReadFindCell( p_dvd );
 980
 981     vlc_mutex_lock( &p_input->stream.stream_lock );
 982     p_input->stream.p_selected_area->i_tell =
 983         LB2OFF ( p_dvd->i_cur_block )
 984          - p_input->stream.p_selected_area->i_start;
 985     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 986     vlc_mutex_unlock( &p_input->stream.stream_lock );
 987
 988     return;
 989 }
 990
 991 /*****************************************************************************
 992  * DvdReadHandleDSI
 993  *****************************************************************************/
 994 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
 995 {
 996     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
 997
 998     /*
 999      * Determine where we go next.  These values are the ones we mostly
1000      * care about.
1001      */
1002     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1003
1004     /*
1005      * If we're not at the end of this cell, we can determine the next
1006      * VOBU to display using the VOBU_SRI information section of the
1007      * DSI.  Using this value correctly follows the current angle,
1008      * avoiding the doubled scenes in The Matrix, and makes our life
1009      * really happy.
1010      */
1011     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1012     {
1013 #if 1
1014         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1015         {
1016             case 0x4:
1017                 /* interleaved unit with no angle */
1018                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1019                 {
1020                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1021                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1022                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1023                 }
1024                 else
1025                 {
1026                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1027                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1028                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1029                 }
1030                 break;
1031             case 0x5:
1032                 /* vobu is end of ilvu */
1033                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1034                 {
1035                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1036                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1037                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1038
1039                     break;
1040                 }
1041             case 0x6:
1042                 /* vobu is beginning of ilvu */
1043             case 0x9:
1044                 /* next scr is 0 */
1045             case 0xa:
1046                 /* entering interleaved section */
1047             case 0x8:
1048                 /* non interleaved cells in interleaved section */
1049             default:
1050                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1051                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1052                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1053                 break;
1054         }
1055 #else
1056         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1057             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1058         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1059 #endif
1060     }
1061     else
1062     {
1063         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1064         DvdReadFindCell( p_dvd );
1065
1066         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1067         p_dvd->i_next_vobu =
1068             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1069     }
1070
1071 #if 0
1072     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1073             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1074             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1075             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1076             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1077             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1078
1079     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1080             p_dvd->dsi_pack.sml_pbi.category,
1081             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1082             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1083             p_dvd->dsi_pack.sml_pbi.size );
1084
1085     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1086             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1087             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1088             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1089 #endif
1090 }
1091
1092 /*****************************************************************************
1093  * DvdReadFindCell
1094  *****************************************************************************/
1095 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1096 {
1097     int         pgc_id, pgn;
1098     int         i = 0;
1099     pgc_t *     p_pgc;
1100 #define cell p_dvd->p_cur_pgc->cell_playback
1101     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1102     {
1103 #if 0
1104         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1105         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1106 #else
1107         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1108
1109         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1110         {
1111             i++;
1112         }
1113         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1114 #endif
1115     }
1116     else
1117     {
1118         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1119     }
1120 #undef cell
1121     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1122                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1123     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1124                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1125     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1126
1127     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1128     {
1129         p_dvd->i_chapter++;
1130         p_dvd->b_eoc = 1;
1131     }
1132 }
1133
1134 /*****************************************************************************
1135  * DvdReadLaunchDecoders
1136  *****************************************************************************/
1137 static void DvdReadLauchDecoders( input_thread_t * p_input )
1138 {
1139     thread_dvd_data_t *  p_dvd;
1140
1141     p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
1142
1143     if( p_main->b_video )
1144     {
1145         input_SelectES( p_input, p_input->stream.pp_es[0] );
1146     }
1147
1148     if( p_main->b_audio )
1149     {
1150         /* For audio: first one if none or a not existing one specified */
1151         int i_audio = config_GetIntVariable( INPUT_CHANNEL_VAR );
1152         if( i_audio < 0 /*|| i_audio > i_audio_nb*/ )
1153         {
1154             config_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
1155             i_audio = 1;
1156         }
1157         if( i_audio > 0/* && i_audio_nb > 0*/ )
1158         {
1159             if( config_GetIntVariable( AOUT_SPDIF_VAR ) ||
1160                 ( config_GetIntVariable( INPUT_AUDIO_VAR ) ==
1161                   REQUESTED_AC3 ) )
1162             {
1163                 int     i_ac3 = i_audio;
1164                 while( ( p_input->stream.pp_es[i_ac3]->i_type !=
1165                        AC3_AUDIO_ES ) && ( i_ac3 <=
1166                        p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams ) )
1167                 {
1168                     i_ac3++;
1169                 }
1170                 if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
1171                 {
1172                     input_SelectES( p_input,
1173                                     p_input->stream.pp_es[i_ac3] );
1174                 }
1175             }
1176             else
1177             {
1178                 input_SelectES( p_input,
1179                                 p_input->stream.pp_es[i_audio] );
1180             }
1181         }
1182     }
1183
1184     if( p_main->b_video )
1185     {
1186         /* for spu, default is none */
1187         int i_spu = config_GetIntVariable( INPUT_SUBTITLE_VAR );
1188         if( i_spu < 0 /*|| i_spu > i_spu_nb*/ )
1189         {
1190             config_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
1191             i_spu = 0;
1192         }
1193         if( i_spu > 0 /*&& i_spu_nb > 0*/ )
1194         {
1195             i_spu += p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams;
1196             input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
1197         }
1198     }
1199 }