git.sesse.net Git - vlc/blob - plugins/dvd/input_dvd.c

   1 /*****************************************************************************
   2  * input_dvd.c: DVD raw reading 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:
   7  *  -input_netlist used to read packets
   8  *  -dvd_ifo for ifo parsing and analyse
   9  *  -dvd_css for unscrambling
  10  *  -dvd_udf to find files
  11  *****************************************************************************
  12  * Copyright (C) 1998-2001 VideoLAN
  13  * $Id: input_dvd.c,v 1.60 2001/05/19 00:39:30 stef Exp $
  14  *
  15  * Author: Stéphane Borel <stef@via.ecp.fr>
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  30  *****************************************************************************/
  31
  32 /*****************************************************************************
  33  * Preamble
  34  *****************************************************************************/
  35 #include "defs.h"
  36
  37 #ifdef HAVE_CSS
  38 #define MODULE_NAME dvd
  39 #else /* HAVE_CSS */
  40 #define MODULE_NAME dvdnocss
  41 #endif /* HAVE_CSS */
  42 #include "modules_inner.h"
  43
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <unistd.h>
  47 #include <netinet/in.h>
  48
  49 #include <fcntl.h>
  50 #include <sys/types.h>
  51 #include <sys/uio.h>
  52
  53 #include <string.h>
  54 #ifdef STRNCASECMP_IN_STRINGS_H
  55 #   include <strings.h>
  56 #endif
  57 #include <errno.h>
  58
  59 #include "config.h"
  60 #include "common.h"
  61 #include "threads.h"
  62 #include "mtime.h"
  63 #include "tests.h"
  64
  65 #include "intf_msg.h"
  66
  67 #include "main.h"
  68
  69 #include "stream_control.h"
  70 #include "input_ext-intf.h"
  71 #include "input_ext-dec.h"
  72
  73 #include "input.h"
  74
  75 #include "dvd_netlist.h"
  76 #include "dvd_ifo.h"
  77 #include "dvd_css.h"
  78 #include "dvd_summary.h"
  79 #include "input_dvd.h"
  80 #include "mpeg_system.h"
  81
  82 #include "debug.h"
  83
  84 #include "modules.h"
  85
  86 /*****************************************************************************
  87  * Local prototypes
  88  *****************************************************************************/
  89 /* called from outside */
  90 static int  DVDProbe    ( probedata_t *p_data );
  91 static void DVDInit     ( struct input_thread_s * );
  92 static void DVDEnd      ( struct input_thread_s * );
  93 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
  94 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
  95 static void DVDSeek     ( struct input_thread_s *, off_t );
  96 static int  DVDRewind   ( struct input_thread_s * );
  97
  98 /* called only inside */
  99 static int  DVDChooseAngle( thread_dvd_data_t * );
 100 static int  DVDFindCell( thread_dvd_data_t * );
 101 static int  DVDFindSector( thread_dvd_data_t * );
 102 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 103
 104 /*****************************************************************************
 105  * Functions exported as capabilities. They are declared as static so that
 106  * we don't pollute the namespace too much.
 107  *****************************************************************************/
 108 void _M( input_getfunctions )( function_list_t * p_function_list )
 109 {
 110 #define input p_function_list->functions.input
 111     p_function_list->pf_probe = DVDProbe;
 112     input.pf_init             = DVDInit;
 113     input.pf_open             = input_FileOpen;
 114     input.pf_close            = input_FileClose;
 115     input.pf_end              = DVDEnd;
 116     input.pf_read             = DVDRead;
 117     input.pf_set_area         = DVDSetArea;
 118     input.pf_demux            = input_DemuxPS;
 119     input.pf_new_packet       = DVDNewPacket;
 120     input.pf_new_pes          = DVDNewPES;
 121     input.pf_delete_packet    = DVDDeletePacket;
 122     input.pf_delete_pes       = DVDDeletePES;
 123     input.pf_rewind           = DVDRewind;
 124     input.pf_seek             = DVDSeek;
 125 #undef input
 126 }
 127
 128 /*
 129  * Data reading functions
 130  */
 131
 132 /*****************************************************************************
 133  * DVDProbe: verifies that the stream is a PS stream
 134  *****************************************************************************/
 135 static int DVDProbe( probedata_t *p_data )
 136 {
 137     input_thread_t * p_input = (input_thread_t *)p_data;
 138
 139     char * psz_name = p_input->p_source;
 140     int i_handle;
 141     int i_score = 5;
 142
 143     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 144     {
 145 #ifdef HAVE_CSS
 146         return( 999 );
 147 #else /* HAVE_CSS */
 148         return( 998 );
 149 #endif /* HAVE_CSS */
 150     }
 151
 152     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 153     {
 154         /* If the user specified "dvd:" then it's probably a DVD */
 155 #ifdef HAVE_CSS
 156         i_score = 100;
 157 #else /* HAVE_CSS */
 158         i_score = 90;
 159 #endif /* HAVE_CSS */
 160         psz_name += 4;
 161     }
 162
 163     i_handle = open( psz_name, 0 );
 164     if( i_handle == -1 )
 165     {
 166         return( 0 );
 167     }
 168     close( i_handle );
 169
 170     return( i_score );
 171 }
 172
 173 /*****************************************************************************
 174  * DVDInit: initializes DVD structures
 175  *****************************************************************************/
 176 static void DVDInit( input_thread_t * p_input )
 177 {
 178     thread_dvd_data_t *  p_dvd;
 179     input_area_t *       p_area;
 180     int                  i_title;
 181     int                  i_chapter;
 182     int                  i;
 183
 184     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 185     if( p_dvd == NULL )
 186     {
 187         intf_ErrMsg( "dvd error: out of memory" );
 188         p_input->b_error = 1;
 189         return;
 190     }
 191
 192     p_input->p_plugin_data = (void *)p_dvd;
 193     p_input->p_method_data = NULL;
 194
 195     p_dvd->i_fd = p_input->i_handle;
 196
 197     /* reading several block once seems to cause lock-up
 198      * when using input_ToggleES
 199      * who wrote thez damn buggy piece of shit ??? --stef */
 200     p_dvd->i_block_once = 32;
 201     p_input->i_read_once = 128;
 202
 203     i = CSSTest( p_input->i_handle );
 204
 205     if( i < 0 )
 206     {
 207         intf_ErrMsg( "dvd error: error in css" );
 208         free( p_dvd );
 209         p_input->b_error = 1;
 210         return;
 211     }
 212
 213     p_dvd->b_encrypted = i;
 214
 215     lseek( p_input->i_handle, 0, SEEK_SET );
 216
 217     /* Reading structures initialisation */
 218     p_input->p_method_data =
 219         DVDNetlistInit( 2048, 4096, 2048, DVD_LB_SIZE, p_dvd->i_block_once );
 220     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 221
 222     /* Ifo allocation & initialisation */
 223     if( IfoCreate( p_dvd ) < 0 )
 224     {
 225         intf_ErrMsg( "dvd error: allcation error in ifo" );
 226         p_input->b_error = 1;
 227         return;
 228     }
 229
 230     if( IfoInit( p_dvd->p_ifo ) < 0 )
 231     {
 232         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 233         free( p_dvd );
 234         p_input->b_error = 1;
 235         return;
 236     }
 237
 238     /* CSS initialisation */
 239     if( p_dvd->b_encrypted )
 240     {
 241         p_dvd->p_css = malloc( sizeof(css_t) );
 242         if( p_dvd->p_css == NULL )
 243         {
 244             intf_ErrMsg( "dvd error: couldn't create css structure" );
 245             free( p_dvd );
 246             p_input->b_error = 1;
 247             return;
 248         }
 249
 250         p_dvd->p_css->i_agid = 0;
 251
 252         if( CSSInit( p_input->i_handle, p_dvd->p_css ) < 0 )
 253         {
 254             intf_ErrMsg( "dvd error: fatal failure in css" );
 255             free( p_dvd->p_css );
 256             free( p_dvd );
 257             p_input->b_error = 1;
 258             return;
 259         }
 260
 261         intf_WarnMsg( 2, "dvd info: css initialized" );
 262     }
 263
 264     /* Set stream and area data */
 265     vlc_mutex_lock( &p_input->stream.stream_lock );
 266
 267     /* Initialize ES structures */
 268     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 269
 270     /* disc input method */
 271     p_input->stream.i_method = INPUT_METHOD_DVD;
 272
 273 #define title_inf p_dvd->p_ifo->vmg.title_inf
 274     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 275
 276 #define area p_input->stream.pp_areas
 277     /* We start from 1 here since the default area 0
 278      * is reserved for video_ts.vob */
 279     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 280     {
 281         input_AddArea( p_input );
 282
 283         /* Titles are Program Chains */
 284         area[i]->i_id = i;
 285
 286         /* Absolute start offset and size
 287          * We can only set that with vts ifo, so we do it during the
 288          * first call to DVDSetArea */
 289         area[i]->i_start = 0;
 290         area[i]->i_size = 0;
 291
 292         /* Number of chapters */
 293         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 294         area[i]->i_part = 1;
 295
 296         /* Number of angles */
 297         area[i]->i_angle_nb = 0;
 298         area[i]->i_angle = 1;
 299
 300         /* Offset to vts_i_0.ifo */
 301         area[i]->i_plugin_data = p_dvd->p_ifo->i_off +
 302                        ( title_inf.p_attr[i-1].i_start_sector * DVD_LB_SIZE );
 303     }
 304 #undef area
 305
 306     /* Get requested title - if none try the first title */
 307     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 308     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 309     {
 310         i_title = 1;
 311     }
 312
 313 #undef title_inf
 314
 315     /* Get requested chapter - if none defaults to first one */
 316     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 317     if( i_chapter <= 0 )
 318     {
 319         i_chapter = 1;
 320     }
 321
 322     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 323
 324     p_area = p_input->stream.pp_areas[i_title];
 325
 326     /* set title, chapter, audio and subpic */
 327     DVDSetArea( p_input, p_area );
 328
 329     vlc_mutex_unlock( &p_input->stream.stream_lock );
 330
 331     return;
 332 }
 333
 334 /*****************************************************************************
 335  * DVDEnd: frees unused data
 336  *****************************************************************************/
 337 static void DVDEnd( input_thread_t * p_input )
 338 {
 339     thread_dvd_data_t *     p_dvd;
 340     dvd_netlist_t *         p_netlist;
 341
 342     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 343     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 344
 345     if( p_dvd->b_encrypted )
 346     {
 347         free( p_dvd->p_css );
 348     }
 349
 350     IfoDestroy( p_dvd->p_ifo );
 351     free( p_dvd );
 352     DVDNetlistEnd( p_netlist );
 353 }
 354
 355 /*****************************************************************************
 356  * DVDSetArea: initialize input data for title x, chapter y.
 357  * It should be called for each user navigation request.
 358  *****************************************************************************
 359  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 360  * Note that you have to take the lock before entering here.
 361  *****************************************************************************/
 362 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 363 {
 364     thread_dvd_data_t *  p_dvd;
 365     es_descriptor_t *    p_es;
 366     u16                  i_id;
 367     int                  i_vts_title;
 368     int                  i_audio;
 369     int                  i_spu;
 370     int                  i;
 371     int                  j;
 372
 373     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 374
 375     /* we can't use the interface slider until initilization is complete */
 376     p_input->stream.b_seekable = 0;
 377
 378     if( p_area != p_input->stream.p_selected_area )
 379     {
 380
 381         /*
 382          *  We have to load all title information
 383          */
 384         /* Change the default area */
 385         p_input->stream.p_selected_area =
 386                     p_input->stream.pp_areas[p_area->i_id];
 387
 388         /* release the lock to to let the interface go */
 389 //        vlc_mutex_unlock( &p_input->stream.stream_lock );
 390
 391         /* title number: it is not vts nb!,
 392          * it is what appears in the interface list */
 393         p_dvd->i_title = p_area->i_id;
 394         p_dvd->p_ifo->i_title = p_dvd->i_title;
 395
 396         /* set number of chapters of current title */
 397         p_dvd->i_chapter_nb = p_area->i_part_nb;
 398
 399         /* ifo vts */
 400         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 401         {
 402             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 403             free( p_dvd );
 404             p_input->b_error = 1;
 405             return -1;
 406         }
 407
 408 #define vmg p_dvd->p_ifo->vmg
 409 #define vts p_dvd->p_ifo->vts
 410         /* title position inside the selected vts */
 411         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 412         p_dvd->i_title_id =
 413             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 414
 415         intf_WarnMsg( 3, "dvd: title %d vts_title %d pgc %d",
 416                         p_dvd->i_title,
 417                         i_vts_title,
 418                         p_dvd->i_title_id );
 419
 420         /* css title key for current vts */
 421         if( p_dvd->b_encrypted )
 422         {
 423             /* this one is vts number */
 424             p_dvd->p_css->i_title =
 425                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_set_num;
 426             p_dvd->p_css->i_title_pos =
 427                     vts.i_pos +
 428                     vts.manager_inf.i_title_vob_start_sector * DVD_LB_SIZE;
 429
 430             j = CSSGetKey( p_input->i_handle, p_dvd->p_css );
 431             if( j < 0 )
 432             {
 433                 intf_ErrMsg( "dvd error: fatal error in vts css key" );
 434                 free( p_dvd );
 435                 p_input->b_error = 1;
 436                 return -1;
 437             }
 438             else if( j > 0 )
 439             {
 440                 intf_ErrMsg( "dvd error: css decryption unavailable" );
 441                 free( p_dvd );
 442                 p_input->b_error = 1;
 443                 return -1;
 444             }
 445         }
 446
 447         /*
 448          * Angle management
 449          */
 450         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 451         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 452         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 453         {
 454             p_dvd->i_angle = 1;
 455         }
 456
 457         /*
 458          * Set selected title start and size
 459          */
 460
 461         /* title set offset */
 462         p_dvd->i_title_start = vts.i_pos + DVD_LB_SIZE *
 463                       (off_t)( vts.manager_inf.i_title_vob_start_sector );
 464
 465         /* last video cell */
 466         p_dvd->i_cell = 0;
 467         p_dvd->i_prg_cell = -1 +
 468             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 469
 470         if( DVDFindCell( p_dvd ) < 0 )
 471         {
 472             intf_ErrMsg( "dvd error: can't find title end" );
 473             p_input->b_error = 1;
 474             return -1;
 475         }
 476
 477         /* temporary hack to fix size in some dvds */
 478         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 479         {
 480             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 481         }
 482
 483         p_dvd->i_sector = 0;
 484         p_dvd->i_size = DVD_LB_SIZE *
 485           (off_t)( vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 486         intf_WarnMsg( 2, "dvd info: stream size 1: %lld @ %d", p_dvd->i_size,
 487                       vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 488
 489         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 490         {
 491             intf_ErrMsg( "dvd error: can't find first chapter" );
 492             p_input->b_error = 1;
 493             return -1;
 494         }
 495
 496         p_dvd->i_size -= (off_t)( p_dvd->i_sector + 1 ) *DVD_LB_SIZE;
 497
 498         IfoPrintTitle( p_dvd );
 499
 500 //        vlc_mutex_lock( &p_input->stream.stream_lock );
 501
 502         /* Area definition */
 503         p_input->stream.p_selected_area->i_start = p_dvd->i_start;
 504         p_input->stream.p_selected_area->i_size = p_dvd->i_size;
 505         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 506         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 507
 508         /*
 509          * Destroy obsolete ES by reinitializing program 0
 510          * and find all ES in title with ifo data
 511          */
 512         if( p_input->stream.pp_programs != NULL )
 513         {
 514             /* We don't use input_EndStream here since
 515              * we keep area structures */
 516
 517             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 518             {
 519                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 520             }
 521
 522             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 523
 524             p_input->stream.pp_selected_es = NULL;
 525             p_input->stream.i_selected_es_number = 0;
 526         }
 527
 528         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 529
 530         /* No PSM to read in DVD mode, we already have all information */
 531         p_input->stream.pp_programs[0]->b_is_ok = 1;
 532         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 533
 534         p_es = NULL;
 535
 536         /* ES 0 -> video MPEG2 */
 537         IfoPrintVideo( p_dvd );
 538
 539         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 540         p_es->i_stream_id = 0xe0;
 541         p_es->i_type = MPEG2_VIDEO_ES;
 542         p_es->i_cat = VIDEO_ES;
 543         intf_WarnMsg( 1, "dvd info: video mpeg2 stream" );
 544         if( p_main->b_video )
 545         {
 546             input_SelectES( p_input, p_es );
 547         }
 548         intf_WarnMsg( 4, "dvd info: video selected" );
 549
 550 #define audio_status \
 551     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 552         /* Audio ES, in the order they appear in .ifo */
 553         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 554         {
 555             IfoPrintAudio( p_dvd, i );
 556
 557             /* audio channel is active if first byte is 0x80 */
 558             if( audio_status.i_available )
 559             {
 560                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 561                 {
 562                 case 0x00:              /* AC3 */
 563                     i_id = ( ( 0x80 + audio_status.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, IfoLanguage( hton16(
 571                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 572                     strcat( p_es->psz_desc, " (ac3)" );
 573
 574                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 575                                   i, p_es->psz_desc, i_id );
 576
 577                     break;
 578                 case 0x02:
 579                 case 0x03:              /* MPEG audio */
 580                     i_id = 0xc0 + audio_status.i_position;
 581                     p_es = input_AddES( p_input,
 582                                     p_input->stream.pp_programs[0], i_id, 0 );
 583                     p_es->i_stream_id = i_id;
 584                     p_es->i_type = MPEG2_AUDIO_ES;
 585                     p_es->b_audio = 1;
 586                     p_es->i_cat = AUDIO_ES;
 587                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 588                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 589                     strcat( p_es->psz_desc, " (mpeg)" );
 590
 591                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 592                                   i, p_es->psz_desc, i_id );
 593
 594                     break;
 595                 case 0x04:              /* LPCM */
 596
 597                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 598                     p_es = input_AddES( p_input,
 599                                     p_input->stream.pp_programs[0], i_id, 0 );
 600                     p_es->i_stream_id = i_id;
 601                     p_es->i_type = LPCM_AUDIO_ES;
 602                     p_es->b_audio = 1;
 603                     p_es->i_cat = AUDIO_ES;
 604                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 605                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 606                     strcat( p_es->psz_desc, " (lpcm)" );
 607
 608                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 609                                   i, p_es->psz_desc, i_id );
 610                     break;
 611                 case 0x06:              /* DTS */
 612                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 613                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 614                                  "(0x%x)", i_id );
 615                     break;
 616                 default:
 617                     i_id = 0;
 618                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 619                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 620                 }
 621             }
 622         }
 623 #undef audio_status
 624 #define spu_status \
 625     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 626
 627         /* Sub Picture ES */
 628
 629         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 630         {
 631             IfoPrintSpu( p_dvd, i );
 632
 633             if( spu_status.i_available )
 634             {
 635                 /*  there are several streams for one spu */
 636                 if(  vts.manager_inf.video_attr.i_ratio )
 637                 {
 638                     /* 16:9 */
 639                     switch( vts.manager_inf.video_attr.i_perm_displ )
 640                     {
 641                     case 1:
 642                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 643                                | 0xbd;
 644                         break;
 645                     case 2:
 646                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 647                                | 0xbd;
 648                         break;
 649                     default:
 650                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 651                                | 0xbd;
 652                         break;
 653                     }
 654                 }
 655                 else
 656                 {
 657                     /* 4:3 */
 658                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 659                            | 0xbd;
 660                 }
 661                 p_es = input_AddES( p_input,
 662                                     p_input->stream.pp_programs[0], i_id, 0 );
 663                 p_es->i_stream_id = 0xbd;
 664                 p_es->i_type = DVD_SPU_ES;
 665                 p_es->i_cat = SPU_ES;
 666                 strcpy( p_es->psz_desc, IfoLanguage( hton16(
 667                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 668                 intf_WarnMsg( 3, "dvd info: spu stream %d %s\t(0x%x)",
 669                               i, p_es->psz_desc, i_id );
 670             }
 671         }
 672 #undef spu_status
 673         if( p_main->b_audio )
 674         {
 675             /* For audio: first one if none or a not existing one specified */
 676             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 677             if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 678             {
 679                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 680                 i_audio = 1;
 681             }
 682             if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
 683             {
 684                 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 685             }
 686         }
 687
 688         if( p_main->b_video )
 689         {
 690             /* for spu, default is none */
 691             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 692             if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 693             {
 694                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 695                 i_spu = 0;
 696             }
 697             if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
 698             {
 699                 i_spu += vts.manager_inf.i_audio_nb;
 700                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 701             }
 702         }
 703     } /* i_title >= 0 */
 704     else
 705     {
 706         p_area = p_input->stream.p_selected_area;
 707     }
 708 #undef vts
 709 #undef vmg
 710
 711     /*
 712      * Chapter selection
 713      */
 714
 715
 716     if( p_area->i_part != p_dvd->i_chapter )
 717     {
 718         if( ( p_area->i_part > 0 ) &&
 719             ( p_area->i_part <= p_area->i_part_nb ))
 720         {
 721             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 722             {
 723                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 724                 p_input->b_error = 1;
 725                 return -1;
 726             }
 727
 728             p_input->stream.p_selected_area->i_tell = p_dvd->i_start -
 729                                                       p_area->i_start;
 730             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 731
 732             intf_WarnMsg( 2, "dvd info: chapter %d start at: %lld",
 733                                         p_area->i_part, p_area->i_tell );
 734         }
 735         else
 736         {
 737             p_area->i_part = 1;
 738             p_dvd->i_chapter = 1;
 739         }
 740     }
 741
 742 #define title \
 743     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 744     if( p_area->i_angle != p_dvd->i_angle )
 745     {
 746         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 747         {
 748             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 749             {
 750                 p_dvd->i_cell = 0;
 751             }
 752             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 753             p_dvd->i_angle = p_area->i_angle;
 754
 755             DVDFindSector( p_dvd );
 756             p_dvd->i_cell += p_dvd->i_angle_cell;
 757         }
 758         else
 759         {
 760             p_dvd->i_angle = p_area->i_angle;
 761         }
 762
 763         intf_WarnMsg( 2, "dvd info: angle %d selected", p_area->i_angle );
 764     }
 765
 766     /* warn interface that something has changed */
 767     p_input->stream.b_seekable = 1;
 768     p_input->stream.b_changed = 1;
 769
 770     p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_REINIT;
 771
 772     return 0;
 773 }
 774
 775
 776 /*****************************************************************************
 777  * DVDRead: reads data packets into the netlist.
 778  *****************************************************************************
 779  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 780  * EOF.
 781  *****************************************************************************/
 782 static int DVDRead( input_thread_t * p_input,
 783                     data_packet_t ** pp_packets )
 784 {
 785     thread_dvd_data_t *     p_dvd;
 786     dvd_netlist_t *         p_netlist;
 787     struct iovec *          p_vec;
 788     struct data_packet_s *  pp_data[p_input->i_read_once];
 789     u8 *                    pi_cur;
 790     int                     i_block_once;
 791     int                     i_packet_size;
 792     int                     i_iovec;
 793     int                     i_packet;
 794     int                     i_pos;
 795     int                     i_read_bytes;
 796     int                     i_read_blocks;
 797     off_t                   i_off;
 798     boolean_t               b_eof;
 799     boolean_t               b_eot;
 800
 801     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 802     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 803
 804     /* Get an iovec pointer */
 805     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 806     {
 807         intf_ErrMsg( "dvd error: can't get iovec" );
 808         return -1;
 809     }
 810
 811     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 812
 813     /* Get the position of the next cell if we're at cell end */
 814     if( i_block_once <= 0 )
 815     {
 816         int     i_angle;
 817
 818         p_dvd->i_cell++;
 819         p_dvd->i_angle_cell++;
 820
 821         /* Find cell index in adress map */
 822         if( DVDFindSector( p_dvd ) < 0 )
 823         {
 824             pp_packets[0] = NULL;
 825             intf_ErrMsg( "dvd error: can't find next cell" );
 826             return 1;
 827         }
 828
 829         /* Position the fd pointer on the right address */
 830         i_off = lseek( p_dvd->i_fd,
 831                        p_dvd->i_title_start +
 832                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET );
 833
 834         /* update chapter : it will be easier when we have navigation
 835          * ES support */
 836         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 837         {
 838             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 839             {
 840                 i_angle = p_dvd->i_angle - 1;
 841             }
 842             else
 843             {
 844                 i_angle = 0;
 845             }
 846             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 847                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 848             {
 849                 p_dvd->i_chapter++;
 850             }
 851         }
 852
 853         vlc_mutex_lock( &p_input->stream.stream_lock );
 854
 855         p_input->stream.p_selected_area->i_tell = i_off -
 856                                     p_input->stream.p_selected_area->i_start;
 857         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 858
 859         /* the synchro has to be reinitialized when we change cell */
 860         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_REINIT;
 861
 862         vlc_mutex_unlock( &p_input->stream.stream_lock );
 863
 864         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 865     }
 866
 867     /* the number of blocks read is the maw between the requested
 868      * value and the leaving block in the cell */
 869     if( i_block_once > p_dvd->i_block_once )
 870     {
 871         i_block_once = p_dvd->i_block_once;
 872     }
 873 //intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 874
 875     p_netlist->i_read_once = i_block_once;
 876
 877     /* Reads from DVD */
 878     i_read_bytes = readv( p_dvd->i_fd, p_vec, i_block_once );
 879     i_read_blocks = ( i_read_bytes + 0x7ff ) >> 11;
 880
 881     /* Update netlist indexes */
 882     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 883
 884     /* Update global position */
 885     p_dvd->i_sector += i_read_blocks;
 886
 887     i_packet = 0;
 888
 889     /* Read headers to compute payload length */
 890     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 891     {
 892         if( p_dvd->b_encrypted )
 893         {
 894             CSSDescrambleSector( p_dvd->p_css->pi_title_key,
 895                                  p_vec[i_iovec].iov_base );
 896             ((u8*)(p_vec[i_iovec].iov_base))[0x14] &= 0x8F;
 897         }
 898
 899         i_pos = 0;
 900
 901         while( i_pos < p_netlist->i_buffer_size )
 902         {
 903             pi_cur = (u8*)(p_vec[i_iovec].iov_base + i_pos);
 904
 905             /*default header */
 906             if( U32_AT( pi_cur ) != 0x1BA )
 907             {
 908                 /* That's the case for all packets, except pack header. */
 909                 i_packet_size = U16_AT( pi_cur + 4 );
 910                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 911             }
 912             else
 913             {
 914                 /* Pack header. */
 915                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
 916                 {
 917                     /* MPEG-2 */
 918                     i_packet_size = 8;
 919                 }
 920                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
 921                 {
 922                     /* MPEG-1 */
 923                     i_packet_size = 6;
 924                 }
 925                 else
 926                 {
 927                     intf_ErrMsg( "Unable to determine stream type" );
 928                     return( -1 );
 929                 }
 930
 931                 pp_packets[i_packet] = pp_data[i_iovec];
 932
 933             }
 934
 935             (*pp_data[i_iovec]->pi_refcount)++;
 936
 937             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 938
 939             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 940
 941             pp_packets[i_packet]->p_payload_start =
 942                     pp_packets[i_packet]->p_buffer + i_pos;
 943
 944             pp_packets[i_packet]->p_payload_end =
 945                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 946
 947             pp_packets[i_packet]->p_next = NULL;
 948             pp_packets[i_packet]->b_discard_payload = 0;
 949
 950             i_packet++;
 951             i_pos += i_packet_size + 6;
 952         }
 953     }
 954
 955     pp_packets[i_packet] = NULL;
 956
 957     vlc_mutex_lock( &p_input->stream.stream_lock );
 958
 959     p_input->stream.p_selected_area->i_tell += i_read_bytes;
 960     b_eot = !( p_input->stream.p_selected_area->i_tell < p_dvd->i_size );
 961     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 962
 963     vlc_mutex_unlock( &p_input->stream.stream_lock );
 964
 965     if( b_eof )
 966     {
 967         return 1;
 968     }
 969
 970     if( b_eot )
 971     {
 972         intf_WarnMsg( 4, "dvd info: new title" );
 973         p_dvd->i_title++;
 974         vlc_mutex_lock( &p_input->stream.stream_lock );
 975         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 976         vlc_mutex_unlock( &p_input->stream.stream_lock );
 977         return 0;
 978     }
 979
 980     if( i_read_blocks == i_block_once )
 981     {
 982         return 0;
 983     }
 984
 985     return -1;
 986 }
 987
 988 /*****************************************************************************
 989  * DVDRewind : reads a stream backward
 990  *****************************************************************************/
 991 static int DVDRewind( input_thread_t * p_input )
 992 {
 993     return( -1 );
 994 }
 995
 996 /*****************************************************************************
 997  * DVDSeek : Goes to a given position on the stream.
 998  *****************************************************************************
 999  * This one is used by the input and translate chronological position from
1000  * input to logical position on the device.
1001  * The lock should be taken before calling this function.
1002  *****************************************************************************/
1003 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1004 {
1005     thread_dvd_data_t *     p_dvd;
1006     off_t                   i_pos;
1007     int                     i_prg_cell;
1008     int                     i_cell;
1009     int                     i_chapter;
1010     int                     i_angle;
1011
1012     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1013
1014     /* we have to take care of offset of beginning of title */
1015     i_pos = i_off + p_input->stream.p_selected_area->i_start
1016                   - p_dvd->i_title_start;
1017
1018     /* update navigation data */
1019     p_dvd->i_sector = i_pos >> 11;
1020
1021     i_prg_cell = 0;
1022     i_chapter = 0;
1023
1024     /* parse vobu address map to find program cell */
1025     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1026     {
1027         i_prg_cell++;
1028     }
1029
1030     p_dvd->i_prg_cell = i_prg_cell;
1031
1032     if( DVDChooseAngle( p_dvd ) < 0 )
1033     {
1034         p_input->b_error = 1;
1035         return;
1036     }
1037
1038     p_dvd->i_cell = 0;
1039
1040     /* Find first title cell which is inside program cell */
1041     if( DVDFindCell( p_dvd ) < 0 )
1042     {
1043         /* no following cell : we're at eof */
1044         intf_ErrMsg( "dvd error: cell seeking failed" );
1045         p_input->b_error = 1;
1046         return;
1047     }
1048
1049     i_cell = p_dvd->i_cell;
1050
1051 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1052     /* parse cell address map to find title cell containing sector */
1053     while( cell.i_end_sector < p_dvd->i_sector )
1054     {
1055         i_cell++;
1056     }
1057
1058     p_dvd->i_cell = i_cell;
1059
1060     /* if we're inside a multi-angle zone, we have to choose i_sector
1061      * in the current angle ; we can't do it all the time since cells
1062      * can be very wide out of such zones */
1063     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1064     {
1065         p_dvd->i_sector = MAX(
1066                 cell.i_start_sector,
1067                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1068     }
1069
1070     p_dvd->i_end_sector = MIN(
1071             cell.i_end_sector,
1072             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1073 #undef cell
1074     /* update chapter */
1075     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1076     {
1077         i_angle = p_dvd->i_angle - 1;
1078     }
1079     else
1080     {
1081         i_angle = 0;
1082     }
1083     while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1084                 ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1085            ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1086     {
1087         i_chapter++;
1088     }
1089
1090     p_dvd->i_chapter = i_chapter;
1091     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1092
1093     p_input->stream.p_selected_area->i_tell =
1094                 lseek( p_dvd->i_fd, p_dvd->i_title_start +
1095                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET ) -
1096                 p_input->stream.p_selected_area->i_start;
1097 /*
1098     intf_WarnMsg( 3, "Program Cell: %d Cell: %d Chapter: %d",
1099                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1100 */
1101
1102     return;
1103 }
1104
1105 #define cell  p_dvd->p_ifo->vts.cell_inf
1106
1107 /*****************************************************************************
1108  * DVDFindCell: adjust the title cell index with the program cell
1109  *****************************************************************************/
1110 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1111 {
1112     int                 i_cell;
1113     int                 i_index;
1114
1115     i_cell = p_dvd->i_cell;
1116     i_index = p_dvd->i_prg_cell;
1117
1118     if( i_cell >= cell.i_cell_nb )
1119     {
1120         return -1;
1121     }
1122
1123     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1124                    cell.p_cell_map[i_cell].i_vob_id ) ||
1125       ( title.p_cell_pos[i_index].i_cell_id !=
1126                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1127            ( i_cell < cell.i_cell_nb - 1 ) )
1128     {
1129         i_cell++;
1130     }
1131
1132 /*
1133 intf_WarnMsg( 3, "FindCell: i_cell %d i_index %d found %d nb %d",
1134                     p_dvd->i_cell,
1135                     p_dvd->i_prg_cell,
1136                     i_cell,
1137                     cell.i_cell_nb );
1138 */
1139
1140     p_dvd->i_cell = i_cell;
1141
1142     return 0;
1143 }
1144
1145 #undef cell
1146
1147 /*****************************************************************************
1148  * DVDFindSector: find cell index in adress map from index in
1149  * information table program map and give corresponding sectors.
1150  *****************************************************************************/
1151 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1152 {
1153
1154     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1155     {
1156         p_dvd->i_prg_cell++;
1157
1158         if( DVDChooseAngle( p_dvd ) < 0 )
1159         {
1160             return -1;
1161         }
1162     }
1163
1164     if( DVDFindCell( p_dvd ) < 0 )
1165     {
1166         intf_ErrMsg( "dvd error: can't find sector" );
1167         return -1;
1168     }
1169
1170     /* Find start and end sectors of new cell */
1171 #if 1
1172     p_dvd->i_sector = MAX(
1173          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1174          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1175     p_dvd->i_end_sector = MIN(
1176          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1177          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1178 #else
1179     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1180     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1181 #endif
1182
1183 /*
1184     intf_WarnMsg( 3, "cell: %d sector1: 0x%x end1: 0x%x\n"
1185                    "index: %d sector2: 0x%x end2: 0x%x\n"
1186                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1187         p_dvd->i_cell,
1188         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1189         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1190         p_dvd->i_prg_cell,
1191         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1192         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1193         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1194         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1195         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1196 */
1197
1198     return 0;
1199 }
1200
1201 /*****************************************************************************
1202  * DVDChapterSelect: find the cell corresponding to requested chapter
1203  *****************************************************************************/
1204 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1205 {
1206
1207     /* Find cell index in Program chain for current chapter */
1208     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1209     p_dvd->i_cell = 0;
1210     p_dvd->i_sector = 0;
1211
1212     DVDChooseAngle( p_dvd );
1213
1214     /* Search for cell_index in cell adress_table and initialize
1215      * start sector */
1216     if( DVDFindSector( p_dvd ) < 0 )
1217     {
1218         intf_ErrMsg( "dvd error: can't select chapter" );
1219         return -1;
1220     }
1221
1222     /* start is : beginning of vts vobs + offset to vob x */
1223     p_dvd->i_start = p_dvd->i_title_start +
1224                          DVD_LB_SIZE * (off_t)( p_dvd->i_sector );
1225
1226     /* Position the fd pointer on the right address */
1227     p_dvd->i_start = lseek( p_dvd->i_fd, p_dvd->i_start, SEEK_SET );
1228
1229     p_dvd->i_chapter = i_chapter;
1230     return 0;
1231 }
1232
1233 /*****************************************************************************
1234  * DVDChooseAngle: select the cell corresponding to the selected angle
1235  *****************************************************************************/
1236 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1237 {
1238     /* basic handling of angles */
1239     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1240                     >> 12 ) )
1241     {
1242         /* we enter a muli-angle section */
1243         case 0x5:
1244             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1245             p_dvd->i_angle_cell = 0;
1246             break;
1247         /* we exit a multi-angle section */
1248         case 0x9:
1249         case 0xd:
1250             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1251             break;
1252     }
1253
1254     return 0;
1255 }
1256
1257 #undef title