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 1.1 2001/11/25 05:04:38 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 #define MODULE_NAME dvdread
  32 #include "modules_inner.h"
  33
  34 /*****************************************************************************
  35  * Preamble
  36  *****************************************************************************/
  37 #include "defs.h"
  38
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41
  42 #ifdef HAVE_UNISTD_H
  43 #   include <unistd.h>
  44 #endif
  45
  46 #include <fcntl.h>
  47 #include <sys/types.h>
  48 #include <string.h>
  49 #include <errno.h>
  50 #include <assert.h>
  51
  52 #ifdef STRNCASECMP_IN_STRINGS_H
  53 #   include <strings.h>
  54 #endif
  55
  56 #if defined( WIN32 )
  57 #   include <io.h>                                                 /* read() */
  58 #else
  59 #   include <sys/uio.h>                                      /* struct iovec */
  60 #endif
  61
  62
  63 #include "config.h"
  64 #include "common.h"
  65 #include "threads.h"
  66 #include "mtime.h"
  67 #include "iso_lang.h"
  68 #include "tests.h"
  69
  70 #if defined( WIN32 )
  71 #   include "input_iovec.h"
  72 #endif
  73
  74 #include "intf_msg.h"
  75
  76 #include "main.h"
  77
  78 #include "stream_control.h"
  79 #include "input_ext-intf.h"
  80 #include "input_ext-dec.h"
  81 #include "input_ext-plugins.h"
  82
  83 #include "input_dvdread.h"
  84
  85 #include "debug.h"
  86
  87 #include "modules.h"
  88 #include "modules_export.h"
  89
  90 /* how many blocks DVDRead will read in each loop */
  91 #define DVD_BLOCK_READ_ONCE 64
  92 #define DVD_DATA_READ_ONCE  (4 * DVD_BLOCK_READ_ONCE)
  93
  94 /* Size of netlist */
  95 #define DVD_NETLIST_SIZE    512
  96
  97 /*****************************************************************************
  98  * Local prototypes
  99  *****************************************************************************/
 100 /* called from outside */
 101 static int  DvdReadProbe    ( probedata_t *p_data );
 102 static void DvdReadInit     ( struct input_thread_s * );
 103 static void DvdReadEnd      ( struct input_thread_s * );
 104 static void DvdReadOpen     ( struct input_thread_s * );
 105 static void DvdReadClose    ( struct input_thread_s * );
 106 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
 107 static int  DvdReadRead     ( struct input_thread_s *, data_packet_t ** );
 108 static void DvdReadSeek     ( struct input_thread_s *, off_t );
 109 static int  DvdReadRewind   ( struct input_thread_s * );
 110
 111 /* called only from here */
 112 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
 113 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
 114
 115 /*****************************************************************************
 116  * Functions exported as capabilities. They are declared as static so that
 117  * we don't pollute the namespace too much.
 118  *****************************************************************************/
 119 void _M( input_getfunctions )( function_list_t * p_function_list )
 120 {
 121 #define input p_function_list->functions.input
 122     p_function_list->pf_probe = DvdReadProbe;
 123     input.pf_init             = DvdReadInit;
 124     input.pf_open             = DvdReadOpen;
 125     input.pf_close            = DvdReadClose;
 126     input.pf_end              = DvdReadEnd;
 127     input.pf_init_bit_stream  = InitBitstream;
 128     input.pf_read             = DvdReadRead;
 129     input.pf_set_area         = DvdReadSetArea;
 130     input.pf_demux            = input_DemuxPS;
 131     input.pf_new_packet       = input_NetlistNewPacket;
 132     input.pf_new_pes          = input_NetlistNewPES;
 133     input.pf_delete_packet    = input_NetlistDeletePacket;
 134     input.pf_delete_pes       = input_NetlistDeletePES;
 135     input.pf_rewind           = DvdReadRewind;
 136     input.pf_seek             = DvdReadSeek;
 137 #undef input
 138 }
 139
 140 /*
 141  * Data reading functions
 142  */
 143
 144 /*****************************************************************************
 145  * DvdReadProbe: verifies that the stream is a PS stream
 146  *****************************************************************************/
 147 static int DvdReadProbe( probedata_t *p_data )
 148 {
 149     input_thread_t * p_input = (input_thread_t *)p_data;
 150
 151     char * psz_name = p_input->p_source;
 152     int i_score = 5;
 153
 154     if( TestMethod( INPUT_METHOD_VAR, "dvdread" ) )
 155     {
 156         return( 999 );
 157     }
 158
 159     if( ( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ) )
 160     {
 161         /* If the user specified "dvdread:" then he probably wants
 162          * to use libdvdread */
 163         i_score = 100;
 164         psz_name += 4;
 165     }
 166
 167     return( i_score );
 168 }
 169
 170 /*****************************************************************************
 171  * DvdReadInit: initializes DVD structures
 172  *****************************************************************************/
 173 static void DvdReadInit( input_thread_t * p_input )
 174 {
 175     thread_dvd_data_t *  p_dvd;
 176     input_area_t *       p_area;
 177     int                  i_title;
 178     int                  i_chapter;
 179     int                  i;
 180
 181     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 182     if( p_dvd == NULL )
 183     {
 184         intf_ErrMsg( "dvdread error: out of memory" );
 185         p_input->b_error = 1;
 186         return;
 187     }
 188
 189     /* we take the pointer to dvd_reader_t back  */
 190     p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
 191     p_dvd->p_title = NULL;
 192     p_dvd->p_vts_file = NULL;
 193
 194     p_input->p_plugin_data = (void *)p_dvd;
 195     p_input->p_method_data = NULL;
 196
 197     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 198      * DVD_DATA_READ_ONCE at most */
 199     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 200     /* this value mustn't be modifed */
 201     p_input->i_read_once = DVD_DATA_READ_ONCE;
 202
 203     /* Reading structures initialisation */
 204     input_NetlistInit( p_input,  DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
 205                    DVD_NETLIST_SIZE, DVD_VIDEO_LB_LEN, p_dvd->i_block_once );
 206     intf_WarnMsg( 2, "dvdread info: netlist initialized" );
 207
 208     /* Ifo allocation & initialisation */
 209     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 210     {
 211         intf_ErrMsg( "dvdread error: can't open VMG info" );
 212         DVDClose( p_dvd->p_dvdread );
 213         free( p_dvd );
 214         p_input->b_error = 1;
 215         return;
 216     }
 217     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 218
 219     /* Set stream and area data */
 220     vlc_mutex_lock( &p_input->stream.stream_lock );
 221
 222     /* Initialize ES structures */
 223     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 224
 225     /* disc input method */
 226     p_input->stream.i_method = INPUT_METHOD_DVD;
 227
 228 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 229     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 230
 231 #define area p_input->stream.pp_areas
 232     /* We start from 1 here since the default area 0
 233      * is reserved for video_ts.vob */
 234     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 235     {
 236         input_AddArea( p_input );
 237
 238         /* Titles are Program Chains */
 239         area[i]->i_id = i;
 240
 241         /* Absolute start offset and size
 242          * We can only set that with vts ifo, so we do it during the
 243          * first call to DVDSetArea */
 244         area[i]->i_start = 0;
 245         area[i]->i_size = 0;
 246
 247         /* Number of chapters */
 248         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 249         area[i]->i_part = 1;
 250
 251         /* Number of angles */
 252         area[i]->i_angle_nb = 0;
 253         area[i]->i_angle = 1;
 254
 255         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 256     }
 257 #undef area
 258
 259     /* Get requested title - if none try the first title */
 260     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 261     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 262     {
 263         i_title = 1;
 264     }
 265
 266 #undef tt_srpt
 267
 268     /* Get requested chapter - if none defaults to first one */
 269     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 270     if( i_chapter <= 0 )
 271     {
 272         i_chapter = 1;
 273     }
 274
 275     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 276
 277     p_area = p_input->stream.pp_areas[i_title];
 278
 279     /* set title, chapter, audio and subpic */
 280     DvdReadSetArea( p_input, p_area );
 281
 282     vlc_mutex_unlock( &p_input->stream.stream_lock );
 283
 284     return;
 285 }
 286
 287 /*****************************************************************************
 288  * DvdReadOpen: open libdvdread
 289  *****************************************************************************/
 290 static void DvdReadOpen( struct input_thread_s *p_input )
 291 {
 292     dvd_reader_t    *p_dvdread;
 293
 294     vlc_mutex_lock( &p_input->stream.stream_lock );
 295
 296     /* If we are here we can control the pace... */
 297     p_input->stream.b_pace_control = 1;
 298
 299     p_input->stream.b_seekable = 1;
 300     p_input->stream.p_selected_area->i_size = 0;
 301
 302     p_input->stream.p_selected_area->i_tell = 0;
 303
 304     vlc_mutex_unlock( &p_input->stream.stream_lock );
 305
 306     /* XXX: put this shit in an access plugin */
 307     if( strlen( p_input->p_source ) > 8
 308          && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
 309     {
 310         p_dvdread = DVDOpen( p_input->p_source + 8 );
 311     }
 312     else
 313     {
 314         p_dvdread = DVDOpen( p_input->p_source );
 315     }
 316
 317     if( ! p_dvdread )
 318     {
 319         p_input->b_error = 1;
 320         return;
 321     }
 322
 323     /* the vlc input doesn't handle the file descriptor with libdvdread */
 324     p_input->i_handle = -1;
 325
 326     /* p_dvdread is stored in p_plugin_data until we have
 327      * malloc'ed a dvd_thread_data_t */
 328     p_input->p_plugin_data = (void *) p_dvdread;
 329 }
 330
 331 /*****************************************************************************
 332  * DvdReadClose: close libdvdread
 333  *****************************************************************************/
 334 static void DvdReadClose( struct input_thread_s *p_input )
 335 {
 336     DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
 337     free( p_input->p_plugin_data );
 338     p_input->p_plugin_data = NULL;
 339
 340 }
 341
 342 /*****************************************************************************
 343  * DvdReadEnd: frees unused data
 344  *****************************************************************************/
 345 static void DvdReadEnd( input_thread_t * p_input )
 346 {
 347     thread_dvd_data_t *     p_dvd;
 348
 349     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 350
 351     /* close libdvdread */
 352     DVDCloseFile( p_dvd->p_title );
 353     ifoClose( p_dvd->p_vts_file );
 354     ifoClose( p_dvd->p_vmg_file );
 355
 356     /* Close netlist */
 357     input_NetlistEnd( p_input );
 358     p_input->p_method_data = NULL;
 359 }
 360
 361 #define p_pgc         p_dvd->p_cur_pgc
 362
 363 /*****************************************************************************
 364  * DvdReadSetArea: initialize input data for title x, chapter y.
 365  * It should be called for each user navigation request.
 366  *****************************************************************************
 367  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 368  * Note that you have to take the lock before entering here.
 369  *****************************************************************************/
 370 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 371 {
 372     thread_dvd_data_t *  p_dvd;
 373     int                  pgc_id = 0;
 374     int                  pgn = 0;
 375
 376     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 377
 378     /* we can't use the interface slider until initilization is complete */
 379     p_input->stream.b_seekable = 0;
 380
 381     if( p_area != p_input->stream.p_selected_area )
 382     {
 383         es_descriptor_t *    p_es;
 384         int                  i_cell = 0;
 385         int                  i_audio_nb = 0;
 386         int                  i_spu_nb = 0;
 387         int                  i;
 388
 389 #define p_vmg         p_dvd->p_vmg_file
 390 #define p_vts         p_dvd->p_vts_file
 391         if( p_dvd->p_title != NULL )
 392         {
 393             DVDCloseFile( p_dvd->p_title );
 394         }
 395
 396         if( p_vts != NULL )
 397         {
 398             ifoClose( p_vts );
 399         }
 400
 401         /* Reset the Chapter position of the old title */
 402         p_input->stream.p_selected_area->i_part = 1;
 403
 404         /*
 405          *  We have to load all title information
 406          */
 407         /* Change the default area */
 408         p_input->stream.p_selected_area = p_area;
 409
 410         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 411             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 412             p_area->i_id );
 413
 414         /* ifo vts */
 415         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 416                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 417         {
 418             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 419             ifoClose( p_vmg );
 420             DVDClose( p_dvd->p_dvdread );
 421             p_input->b_error = 1;
 422             return -1;
 423         }
 424
 425         /* title position inside the selected vts */
 426         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 427
 428         /*
 429          * Set selected title start
 430          */
 431         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 432         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 433         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 434         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 435
 436         p_area->i_start =
 437             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 438
 439         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 440                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 441
 442         /*
 443          * Find title end
 444          */
 445         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 446
 447         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 448         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 449
 450         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 451                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 452
 453         /*
 454          * Set properties for current chapter
 455          */
 456         /* Remeber current chapter */
 457         p_dvd->i_chapter = p_area->i_part;
 458         p_dvd->b_eoc = 0;
 459
 460         pgc_id = p_vts->vts_ptt_srpt->title[
 461                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 462         pgn = p_vts->vts_ptt_srpt->title[
 463                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 464
 465         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 466         p_dvd->i_pack_len = 0;
 467         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 468         DvdReadFindCell( p_dvd );
 469
 470         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 471             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 472
 473         /*
 474          * Angle management
 475          */
 476         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 477         p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 478
 479         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 480         {
 481             p_area->i_angle = 1;
 482         }
 483         p_dvd->i_angle = p_area->i_angle;
 484         p_dvd->i_angle_nb = p_area->i_angle_nb;
 485
 486         /*
 487          * We've got enough info, time to open the title set data.
 488          */
 489         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 490             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 491             DVD_READ_TITLE_VOBS ) ) )
 492         {
 493             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 494                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 495             ifoClose( p_vts );
 496             ifoClose( p_vmg );
 497             DVDClose( p_dvd->p_dvdread );
 498             return -1;
 499         }
 500
 501 //        IfoPrintTitle( p_dvd );
 502
 503         /*
 504          * Destroy obsolete ES by reinitializing program 0
 505          * and find all ES in title with ifo data
 506          */
 507         if( p_input->stream.pp_programs != NULL )
 508         {
 509             /* We don't use input_EndStream here since
 510              * we keep area structures */
 511
 512             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 513             {
 514                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 515             }
 516
 517             free( p_input->stream.pp_selected_es );
 518             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 519
 520             p_input->stream.pp_selected_es = NULL;
 521             p_input->stream.i_selected_es_number = 0;
 522         }
 523
 524         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 525
 526         /* No PSM to read in DVD mode, we already have all information */
 527         p_input->stream.pp_programs[0]->b_is_ok = 1;
 528
 529         p_es = NULL;
 530
 531         /* ES 0 -> video MPEG2 */
 532 //        IfoPrintVideo( p_dvd );
 533
 534         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 535         p_es->i_stream_id = 0xe0;
 536         p_es->i_type = MPEG2_VIDEO_ES;
 537         p_es->i_cat = VIDEO_ES;
 538         if( p_main->b_video )
 539         {
 540             input_SelectES( p_input, p_es );
 541         }
 542
 543 #define audio_control \
 544     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 545         /* Audio ES, in the order they appear in .ifo */
 546         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 547         {
 548             int i_position = 0;
 549             u16 i_id;
 550
 551 //            IfoPrintAudio( p_dvd, i );
 552
 553             /* audio channel is active if first byte is 0x80 */
 554             if( audio_control & 0x8000 )
 555             {
 556                 i_audio_nb++;
 557                 i_position = ( audio_control & 0x7F00 ) >> 8;
 558
 559             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 560                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 561                 {
 562                 case 0x00:              /* AC3 */
 563                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 564                     p_es = input_AddES( p_input,
 565                                p_input->stream.pp_programs[0], i_id, 0 );
 566                     p_es->i_stream_id = 0xbd;
 567                     p_es->i_type = AC3_AUDIO_ES;
 568                     p_es->b_audio = 1;
 569                     p_es->i_cat = AUDIO_ES;
 570                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 571                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 572                     strcat( p_es->psz_desc, " (ac3)" );
 573
 574                     break;
 575                 case 0x02:
 576                 case 0x03:              /* MPEG audio */
 577                     i_id = 0xc0 + i_position;
 578                     p_es = input_AddES( p_input,
 579                                     p_input->stream.pp_programs[0], i_id, 0 );
 580                     p_es->i_stream_id = i_id;
 581                     p_es->i_type = MPEG2_AUDIO_ES;
 582                     p_es->b_audio = 1;
 583                     p_es->i_cat = AUDIO_ES;
 584                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 585                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 586                     strcat( p_es->psz_desc, " (mpeg)" );
 587
 588                     break;
 589                 case 0x04:              /* LPCM */
 590
 591                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 592                     p_es = input_AddES( p_input,
 593                                     p_input->stream.pp_programs[0], i_id, 0 );
 594                     p_es->i_stream_id = i_id;
 595                     p_es->i_type = LPCM_AUDIO_ES;
 596                     p_es->b_audio = 1;
 597                     p_es->i_cat = AUDIO_ES;
 598                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 599                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 600                     strcat( p_es->psz_desc, " (lpcm)" );
 601
 602                     break;
 603                 case 0x06:              /* DTS */
 604                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 605                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 606                                  "(0x%x)", i_id );
 607                     break;
 608                 default:
 609                     i_id = 0;
 610                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 611                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 612                 }
 613             }
 614         }
 615 #undef audio_control
 616 #define spu_control \
 617     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 618
 619         /* Sub Picture ES */
 620
 621         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 622         {
 623             int i_position = 0;
 624             u16 i_id;
 625
 626 //            IfoPrintSpu( p_dvd, i );
 627             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 628
 629             if( spu_control & 0x80000000 )
 630             {
 631                 i_spu_nb++;
 632
 633                 /*  there are several streams for one spu */
 634                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 635                 {
 636                     /* 16:9 */
 637                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 638                     {
 639                     case 1:
 640                         i_position = spu_control & 0xff;
 641                         break;
 642                     case 2:
 643                         i_position = ( spu_control >> 8 ) & 0xff;
 644                         break;
 645                     default:
 646                         i_position = ( spu_control >> 16 ) & 0xff;
 647                         break;
 648                     }
 649                 }
 650                 else
 651                 {
 652                     /* 4:3 */
 653                     i_position = ( spu_control >> 24 ) & 0x7F;
 654                 }
 655
 656                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 657                 p_es = input_AddES( p_input,
 658                                     p_input->stream.pp_programs[0], i_id, 0 );
 659                 p_es->i_stream_id = 0xbd;
 660                 p_es->i_type = DVD_SPU_ES;
 661                 p_es->i_cat = SPU_ES;
 662                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 663                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 664             }
 665         }
 666 #undef spu_control
 667         if( p_main->b_audio )
 668         {
 669             /* For audio: first one if none or a not existing one specified */
 670             int i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 671             if( i_audio < 0 || i_audio > i_audio_nb )
 672             {
 673                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 674                 i_audio = 1;
 675             }
 676             if( i_audio > 0 && i_audio_nb > 0 )
 677             {
 678                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 679                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 680                       REQUESTED_AC3 ) )
 681                 {
 682                     int     i_ac3 = i_audio;
 683                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 684                              AC3_AUDIO_ES ) && ( i_ac3 <=
 685                              p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
 686                     {
 687                         i_ac3++;
 688                     }
 689                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 690                     {
 691                         input_SelectES( p_input,
 692                                         p_input->stream.pp_es[i_ac3] );
 693                     }
 694                 }
 695                 else
 696                 {
 697                     input_SelectES( p_input,
 698                                     p_input->stream.pp_es[i_audio] );
 699                 }
 700             }
 701         }
 702
 703         if( p_main->b_video )
 704         {
 705             /* for spu, default is none */
 706             int i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 707             if( i_spu < 0 || i_spu > i_spu_nb )
 708             {
 709                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 710                 i_spu = 0;
 711             }
 712             if( i_spu > 0 && i_spu_nb > 0 )
 713             {
 714                 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
 715                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 716             }
 717         }
 718     } /* i_title >= 0 */
 719     else
 720     {
 721         p_area = p_input->stream.p_selected_area;
 722     }
 723
 724     /*
 725      * Chapter selection
 726      */
 727
 728     if( p_area->i_part != p_dvd->i_chapter )
 729     {
 730         if( ( p_area->i_part > 0 ) &&
 731             ( p_area->i_part <= p_area->i_part_nb ))
 732         {
 733             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 734             pgc_id = p_vts->vts_ptt_srpt->title[
 735                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 736             pgn = p_vts->vts_ptt_srpt->title[
 737                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 738
 739             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 740
 741             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 742             p_dvd->i_chapter = p_area->i_part;
 743             DvdReadFindCell( p_dvd );
 744
 745             p_dvd->i_pack_len = 0;
 746             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 747                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 748         }
 749         else
 750         {
 751             p_area->i_part = p_dvd->i_chapter;
 752         }
 753     }
 754 #undef p_vts
 755 #undef p_vmg
 756
 757     if( p_area->i_angle != p_dvd->i_angle )
 758     {
 759         p_dvd->i_angle = p_area->i_angle;
 760
 761         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 762     }
 763     /* warn interface that something has changed */
 764     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 765     p_input->stream.b_seekable = 1;
 766     p_input->stream.b_changed = 1;
 767
 768     return 0;
 769 }
 770
 771
 772 /*****************************************************************************
 773  * DvdReadRead: reads data packets into the netlist.
 774  *****************************************************************************
 775  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 776  * EOF.
 777  *****************************************************************************/
 778 static int DvdReadRead( input_thread_t * p_input,
 779                         data_packet_t ** pp_packets )
 780 {
 781     thread_dvd_data_t *     p_dvd;
 782     netlist_t *             p_netlist;
 783     u8                      p_data[DVD_VIDEO_LB_LEN];
 784     struct iovec *          p_vec;
 785     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 786     u8 *                    pi_cur;
 787     int                     i_blocks;
 788     int                     i_read;
 789     int                     i_iovec;
 790     int                     i_packet_size;
 791     int                     i_packet;
 792     int                     i_pos;
 793
 794     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 795     p_netlist = (netlist_t *)p_input->p_method_data;
 796
 797     /*
 798      * Playback by cell in this pgc, starting at the cell for our chapter.
 799      */
 800
 801     /*
 802      * End of pack, we select the following one
 803      */
 804     if( ! p_dvd->i_pack_len )
 805     {
 806         /*
 807          * Read NAV packet.
 808          */
 809         if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 810                        1, p_data ) ) != 1 )
 811         {
 812             intf_ErrMsg( "dvdread error: read failed for block %d",
 813                          p_dvd->i_next_vobu );
 814             return -1;
 815         }
 816
 817         assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
 818
 819         /*
 820          * Parse the contained dsi packet.
 821          */
 822
 823         DvdReadHandleDSI( p_dvd, p_data );
 824
 825         /* End of File */
 826         if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 827         {
 828             return 1;
 829         }
 830
 831         assert( p_dvd->i_pack_len < 1024 );
 832         /* Ugly kludge: we send the pack block to the input for it
 833          * sometimes has a zero scr and restart the sync */
 834 //        p_dvd->i_cur_block ++;
 835         p_dvd->i_pack_len++;
 836
 837     }
 838
 839     /*
 840      * Compute the number of blocks to read
 841      */
 842     i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
 843              ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
 844     p_dvd->i_pack_len -= i_blocks;
 845     p_netlist->i_read_once = i_blocks;
 846
 847     /* Get an iovec pointer */
 848     if( ( p_vec = input_NetlistGetiovec( p_netlist ) ) == NULL )
 849     {
 850         intf_ErrMsg( "dvdread error: can't get iovec" );
 851         return -1;
 852     }
 853
 854     /* Reads from DVD */
 855     i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 856                              i_blocks, p_vec );
 857     if( i_read != i_blocks )
 858     {
 859         intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 860                      i_read, i_blocks, p_dvd->i_cur_block );
 861         return -1;
 862     }
 863
 864     p_dvd->i_cur_block += i_read;
 865 /*
 866     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 867 */
 868     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 869      * need know the real number of blocks read */
 870     input_NetlistMviovec( p_netlist, i_read, pp_data );
 871
 872     i_packet = 0;
 873
 874     /* Read headers to compute payload length */
 875     for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
 876     {
 877         i_pos = 0;
 878
 879         while( i_pos < p_netlist->i_buffer_size )
 880         {
 881             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 882
 883             /*default header */
 884             if( U32_AT( pi_cur ) != 0x1BA )
 885             {
 886                 /* That's the case for all packets, except pack header. */
 887                 i_packet_size = U16_AT( pi_cur + 4 );
 888                 pp_packets[i_packet] = input_NetlistNewPtr( p_netlist );
 889                 (*pp_data[i_iovec]->pi_refcount)++;
 890                 pp_packets[i_packet]->pi_refcount =
 891                     pp_data[i_iovec]->pi_refcount;
 892                 pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 893             }
 894             else
 895             {
 896                 /* MPEG-2 Pack header. */
 897                 i_packet_size = 8;
 898                 pp_packets[i_packet] = pp_data[i_iovec];
 899
 900             }
 901
 902             pp_packets[i_packet]->p_payload_start =
 903                     pp_packets[i_packet]->p_buffer + i_pos;
 904
 905             pp_packets[i_packet]->p_payload_end =
 906                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 907
 908             pp_packets[i_packet]->p_next = NULL;
 909             pp_packets[i_packet]->b_discard_payload = 0;
 910
 911             i_packet++;
 912             i_pos += i_packet_size + 6;
 913         }
 914     }
 915
 916     pp_packets[i_packet] = NULL;
 917
 918     vlc_mutex_lock( &p_input->stream.stream_lock );
 919
 920     p_input->stream.p_selected_area->i_tell =
 921         LB2OFF( p_dvd->i_cur_block ) -
 922             p_input->stream.p_selected_area->i_start;
 923
 924     if( p_dvd->b_eoc )
 925     {
 926         /* We modify i_part only at end of chapter not to erase
 927          * some modification from the interface */
 928         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 929         p_dvd->b_eoc = 0;
 930     }
 931
 932
 933     vlc_mutex_unlock( &p_input->stream.stream_lock );
 934
 935     return 0;
 936 }
 937 #undef p_pgc
 938
 939 /*****************************************************************************
 940  * DVDRewind : reads a stream backward
 941  *****************************************************************************/
 942 static int DvdReadRewind( input_thread_t * p_input )
 943 {
 944     return( -1 );
 945 }
 946
 947 /*****************************************************************************
 948  * DvdReadSeek : Goes to a given position on the stream.
 949  *****************************************************************************
 950  * This one is used by the input and translate chronological position from
 951  * input to logical position on the device.
 952  * The lock should be taken before calling this function.
 953  *****************************************************************************/
 954 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 955 {
 956     thread_dvd_data_t *     p_dvd;
 957     int                     i_lb;
 958     int                     i_tmp;
 959     int                     i_chapter = 0;
 960     int                     i_cell = 0;
 961     int                     i_vobu = 0;
 962     int                     i_sub_cell = 0;
 963
 964     i_off += p_input->stream.p_selected_area->i_start;
 965     i_lb = OFF2LB( i_off );
 966     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 967
 968     /* find cell */
 969     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 970     {
 971         i_cell++;
 972     }
 973
 974     /* find chapter */
 975     do
 976     {
 977         pgc_t *     p_pgc;
 978         int         pgc_id, pgn;
 979
 980         i_chapter++;
 981         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
 982                     p_dvd->i_ttn-1].ptt[i_chapter].pgcn;
 983         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
 984                     p_dvd->i_ttn-1].ptt[i_chapter].pgn;
 985
 986         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 987         i_tmp = p_pgc->program_map[pgn-1];
 988
 989     } while( i_tmp <= i_cell );
 990
 991     /* find vobu */
 992     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
 993             <= i_lb )
 994     {
 995         i_vobu++;
 996     }
 997
 998     /* find sub_cell */
 999     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1000             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1001     {
1002         i_sub_cell++;
1003     }
1004
1005 /*
1006     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1007             i_cell, i_sub_cell,i_chapter, i_vobu,
1008             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1009             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1010             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1011 */
1012     p_dvd->i_cur_block = i_lb;
1013     p_dvd->i_next_vobu =
1014         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1015     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1016     p_dvd->i_cur_cell = i_cell;
1017     p_dvd->i_chapter = i_chapter;
1018     DvdReadFindCell( p_dvd );
1019
1020     p_input->stream.p_selected_area->i_tell =
1021         LB2OFF ( p_dvd->i_cur_block )
1022          - p_input->stream.p_selected_area->i_start;
1023     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1024
1025     return;
1026 }
1027
1028 /*****************************************************************************
1029  * DvdReadHandleDSI
1030  *****************************************************************************/
1031 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1032 {
1033     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1034
1035     /*
1036      * Determine where we go next.  These values are the ones we mostly
1037      * care about.
1038      */
1039     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1040
1041     /*
1042      * If we're not at the end of this cell, we can determine the next
1043      * VOBU to display using the VOBU_SRI information section of the
1044      * DSI.  Using this value correctly follows the current angle,
1045      * avoiding the doubled scenes in The Matrix, and makes our life
1046      * really happy.
1047      */
1048     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1049     {
1050 #if 1
1051         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1052         {
1053             case 0x4:
1054                 /* interleaved unit with no angle */
1055                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1056                 {
1057                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1058                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1059                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1060                 }
1061                 else
1062                 {
1063                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1064                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1065                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1066                 }
1067                 break;
1068             case 0x5:
1069                 /* vobu is end of ilvu */
1070                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1071                 {
1072                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1073                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1074                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1075
1076                     break;
1077                 }
1078             case 0x6:
1079                 /* vobu is beginning of ilvu */
1080             case 0x9:
1081                 /* next scr is 0 */
1082             case 0xa:
1083                 /* entering interleaved section */
1084             case 0x8:
1085                 /* non interleaved cells in interleaved section */
1086             default:
1087                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1088                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1089                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1090                 break;
1091         }
1092 #else
1093         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1094             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1095         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1096 #endif
1097     }
1098     else
1099     {
1100         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1101         DvdReadFindCell( p_dvd );
1102
1103         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1104         p_dvd->i_next_vobu =
1105             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1106     }
1107
1108 #if 0
1109     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1110             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1111             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1112             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1113             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1114             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1115
1116     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1117             p_dvd->dsi_pack.sml_pbi.category,
1118             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1119             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1120             p_dvd->dsi_pack.sml_pbi.size );
1121
1122     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1123             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1124             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1125             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1126 #endif
1127 }
1128
1129 /*****************************************************************************
1130  * DvdReadFindCell
1131  *****************************************************************************/
1132 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1133 {
1134     int         pgc_id, pgn;
1135     int         i = 0;
1136     pgc_t *     p_pgc;
1137 #define cell p_dvd->p_cur_pgc->cell_playback
1138     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1139     {
1140 #if 0
1141         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1142         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1143 #else
1144         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1145
1146         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1147         {
1148             i++;
1149         }
1150         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1151 #endif
1152     }
1153     else
1154     {
1155         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1156     }
1157 #undef cell
1158     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1159                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgcn;
1160     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1161                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgn;
1162     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1163
1164     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1165     {
1166         p_dvd->i_chapter++;
1167         p_dvd->b_eoc = 1;
1168     }
1169 }