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 1.63 2001/05/31 01:37:08 sam 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
  47 #ifdef HAVE_UNISTD_H
  48 #include <unistd.h>
  49 #endif
  50
  51 #if !defined( WIN32 )
  52 #include <netinet/in.h>
  53 #endif
  54
  55 #include <fcntl.h>
  56 #include <sys/types.h>
  57
  58 #include <string.h>
  59 #ifdef STRNCASECMP_IN_STRINGS_H
  60 #   include <strings.h>
  61 #endif
  62 #include <errno.h>
  63
  64 #if !defined( WIN32 )
  65 #include <sys/uio.h>                                         /* struct iovec */
  66 #else
  67 #include <io.h>
  68 #include "iovec.h"
  69 #endif
  70
  71 #include "config.h"
  72 #include "common.h"
  73 #include "threads.h"
  74 #include "mtime.h"
  75 #include "tests.h"
  76
  77 #include "intf_msg.h"
  78
  79 #include "main.h"
  80
  81 #include "stream_control.h"
  82 #include "input_ext-intf.h"
  83 #include "input_ext-dec.h"
  84
  85 #include "input.h"
  86
  87 #include "dvd_netlist.h"
  88 #include "dvd_ifo.h"
  89 #include "dvd_css.h"
  90 #include "dvd_summary.h"
  91 #include "input_dvd.h"
  92 #include "mpeg_system.h"
  93
  94 #include "debug.h"
  95
  96 #include "modules.h"
  97
  98 /*****************************************************************************
  99  * Local prototypes
 100  *****************************************************************************/
 101 /* called from outside */
 102 static int  DVDProbe    ( probedata_t *p_data );
 103 static void DVDInit     ( struct input_thread_s * );
 104 static void DVDEnd      ( struct input_thread_s * );
 105 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 106 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 107 static void DVDSeek     ( struct input_thread_s *, off_t );
 108 static int  DVDRewind   ( struct input_thread_s * );
 109
 110 /* called only inside */
 111 static int  DVDChooseAngle( thread_dvd_data_t * );
 112 static int  DVDFindCell( thread_dvd_data_t * );
 113 static int  DVDFindSector( thread_dvd_data_t * );
 114 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 115
 116 /*****************************************************************************
 117  * Functions exported as capabilities. They are declared as static so that
 118  * we don't pollute the namespace too much.
 119  *****************************************************************************/
 120 void _M( input_getfunctions )( function_list_t * p_function_list )
 121 {
 122 #define input p_function_list->functions.input
 123     p_function_list->pf_probe = DVDProbe;
 124     input.pf_init             = DVDInit;
 125     input.pf_open             = NULL; /* Set in DVDInit */
 126     input.pf_close            = NULL;
 127     input.pf_end              = DVDEnd;
 128     input.pf_read             = DVDRead;
 129     input.pf_set_area         = DVDSetArea;
 130     input.pf_demux            = input_DemuxPS;
 131     input.pf_new_packet       = DVDNewPacket;
 132     input.pf_new_pes          = DVDNewPES;
 133     input.pf_delete_packet    = DVDDeletePacket;
 134     input.pf_delete_pes       = DVDDeletePES;
 135     input.pf_rewind           = DVDRewind;
 136     input.pf_seek             = DVDSeek;
 137 #undef input
 138 }
 139
 140 /*
 141  * Data reading functions
 142  */
 143
 144 /*****************************************************************************
 145  * DVDProbe: verifies that the stream is a PS stream
 146  *****************************************************************************/
 147 static int DVDProbe( 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_handle;
 153     int i_score = 5;
 154
 155     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 156     {
 157 #ifdef HAVE_CSS
 158         return( 999 );
 159 #else /* HAVE_CSS */
 160         return( 998 );
 161 #endif /* HAVE_CSS */
 162     }
 163
 164     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 165     {
 166         /* If the user specified "dvd:" then it's probably a DVD */
 167 #ifdef HAVE_CSS
 168         i_score = 100;
 169 #else /* HAVE_CSS */
 170         i_score = 90;
 171 #endif /* HAVE_CSS */
 172         psz_name += 4;
 173     }
 174
 175     i_handle = open( psz_name, 0 );
 176     if( i_handle == -1 )
 177     {
 178         return( 0 );
 179     }
 180     close( i_handle );
 181
 182     return( i_score );
 183 }
 184
 185 /*****************************************************************************
 186  * DVDInit: initializes DVD structures
 187  *****************************************************************************/
 188 static void DVDInit( input_thread_t * p_input )
 189 {
 190     thread_dvd_data_t *  p_dvd;
 191     input_area_t *       p_area;
 192     int                  i_title;
 193     int                  i_chapter;
 194     int                  i;
 195
 196     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 197     if( p_dvd == NULL )
 198     {
 199         intf_ErrMsg( "dvd error: out of memory" );
 200         p_input->b_error = 1;
 201         return;
 202     }
 203
 204     p_input->p_plugin_data = (void *)p_dvd;
 205     p_input->p_method_data = NULL;
 206
 207     p_dvd->i_fd = p_input->i_handle;
 208
 209     /* reading several block once seems to cause lock-up
 210      * when using input_ToggleES
 211      * who wrote thez damn buggy piece of shit ??? --stef */
 212     p_dvd->i_block_once = 32;
 213     p_input->i_read_once = 128;
 214
 215     i = CSSTest( p_input->i_handle );
 216
 217     if( i < 0 )
 218     {
 219         intf_ErrMsg( "dvd error: error in css" );
 220         free( p_dvd );
 221         p_input->b_error = 1;
 222         return;
 223     }
 224
 225     p_dvd->b_encrypted = i;
 226
 227     lseek( p_input->i_handle, 0, SEEK_SET );
 228
 229     /* Reading structures initialisation */
 230     p_input->p_method_data =
 231         DVDNetlistInit( 2048, 4096, 2048, DVD_LB_SIZE, p_dvd->i_block_once );
 232     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 233
 234     /* Ifo allocation & initialisation */
 235     if( IfoCreate( p_dvd ) < 0 )
 236     {
 237         intf_ErrMsg( "dvd error: allcation error in ifo" );
 238         p_input->b_error = 1;
 239         return;
 240     }
 241
 242     if( IfoInit( p_dvd->p_ifo ) < 0 )
 243     {
 244         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 245         free( p_dvd );
 246         p_input->b_error = 1;
 247         return;
 248     }
 249
 250     /* CSS initialisation */
 251     if( p_dvd->b_encrypted )
 252     {
 253         p_dvd->p_css = malloc( sizeof(css_t) );
 254         if( p_dvd->p_css == NULL )
 255         {
 256             intf_ErrMsg( "dvd error: couldn't create css structure" );
 257             free( p_dvd );
 258             p_input->b_error = 1;
 259             return;
 260         }
 261
 262         p_dvd->p_css->i_agid = 0;
 263
 264         if( CSSInit( p_input->i_handle, p_dvd->p_css ) < 0 )
 265         {
 266             intf_ErrMsg( "dvd error: fatal failure in css" );
 267             free( p_dvd->p_css );
 268             free( p_dvd );
 269             p_input->b_error = 1;
 270             return;
 271         }
 272
 273         intf_WarnMsg( 2, "dvd info: css initialized" );
 274     }
 275
 276     /* Set stream and area data */
 277     vlc_mutex_lock( &p_input->stream.stream_lock );
 278
 279     /* Initialize ES structures */
 280     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 281
 282     /* disc input method */
 283     p_input->stream.i_method = INPUT_METHOD_DVD;
 284
 285 #define title_inf p_dvd->p_ifo->vmg.title_inf
 286     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 287
 288 #define area p_input->stream.pp_areas
 289     /* We start from 1 here since the default area 0
 290      * is reserved for video_ts.vob */
 291     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 292     {
 293         input_AddArea( p_input );
 294
 295         /* Titles are Program Chains */
 296         area[i]->i_id = i;
 297
 298         /* Absolute start offset and size
 299          * We can only set that with vts ifo, so we do it during the
 300          * first call to DVDSetArea */
 301         area[i]->i_start = 0;
 302         area[i]->i_size = 0;
 303
 304         /* Number of chapters */
 305         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 306         area[i]->i_part = 1;
 307
 308         /* Number of angles */
 309         area[i]->i_angle_nb = 0;
 310         area[i]->i_angle = 1;
 311
 312         /* Offset to vts_i_0.ifo */
 313         area[i]->i_plugin_data = p_dvd->p_ifo->i_off +
 314                        ( title_inf.p_attr[i-1].i_start_sector * DVD_LB_SIZE );
 315     }
 316 #undef area
 317
 318     /* Get requested title - if none try the first title */
 319     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 320     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 321     {
 322         i_title = 1;
 323     }
 324
 325 #undef title_inf
 326
 327     /* Get requested chapter - if none defaults to first one */
 328     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 329     if( i_chapter <= 0 )
 330     {
 331         i_chapter = 1;
 332     }
 333
 334     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 335
 336     p_area = p_input->stream.pp_areas[i_title];
 337
 338     /* set title, chapter, audio and subpic */
 339     DVDSetArea( p_input, p_area );
 340
 341     vlc_mutex_unlock( &p_input->stream.stream_lock );
 342
 343     return;
 344 }
 345
 346 /*****************************************************************************
 347  * DVDEnd: frees unused data
 348  *****************************************************************************/
 349 static void DVDEnd( input_thread_t * p_input )
 350 {
 351     thread_dvd_data_t *     p_dvd;
 352     dvd_netlist_t *         p_netlist;
 353
 354     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 355     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 356
 357     if( p_dvd->b_encrypted )
 358     {
 359         free( p_dvd->p_css );
 360     }
 361
 362     IfoDestroy( p_dvd->p_ifo );
 363     free( p_dvd );
 364     DVDNetlistEnd( p_netlist );
 365 }
 366
 367 /*****************************************************************************
 368  * DVDSetArea: initialize input data for title x, chapter y.
 369  * It should be called for each user navigation request.
 370  *****************************************************************************
 371  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 372  * Note that you have to take the lock before entering here.
 373  *****************************************************************************/
 374 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 375 {
 376     thread_dvd_data_t *  p_dvd;
 377     es_descriptor_t *    p_es;
 378     u16                  i_id;
 379     int                  i_vts_title;
 380     int                  i_audio;
 381     int                  i_spu;
 382     int                  i;
 383     int                  j;
 384
 385     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 386
 387     /* we can't use the interface slider until initilization is complete */
 388     p_input->stream.b_seekable = 0;
 389
 390     if( p_area != p_input->stream.p_selected_area )
 391     {
 392
 393         /*
 394          *  We have to load all title information
 395          */
 396         /* Change the default area */
 397         p_input->stream.p_selected_area =
 398                     p_input->stream.pp_areas[p_area->i_id];
 399
 400         /* release the lock to to let the interface go */
 401 //        vlc_mutex_unlock( &p_input->stream.stream_lock );
 402
 403         /* title number: it is not vts nb!,
 404          * it is what appears in the interface list */
 405         p_dvd->i_title = p_area->i_id;
 406         p_dvd->p_ifo->i_title = p_dvd->i_title;
 407
 408         /* set number of chapters of current title */
 409         p_dvd->i_chapter_nb = p_area->i_part_nb;
 410
 411         /* ifo vts */
 412         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 413         {
 414             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 415             free( p_dvd );
 416             p_input->b_error = 1;
 417             return -1;
 418         }
 419
 420 #define vmg p_dvd->p_ifo->vmg
 421 #define vts p_dvd->p_ifo->vts
 422         /* title position inside the selected vts */
 423         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 424         p_dvd->i_title_id =
 425             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 426
 427         intf_WarnMsg( 3, "dvd: title %d vts_title %d pgc %d",
 428                         p_dvd->i_title,
 429                         i_vts_title,
 430                         p_dvd->i_title_id );
 431
 432         /* css title key for current vts */
 433         if( p_dvd->b_encrypted )
 434         {
 435             /* this one is vts number */
 436             p_dvd->p_css->i_title =
 437                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_set_num;
 438             p_dvd->p_css->i_title_pos =
 439                     vts.i_pos +
 440                     vts.manager_inf.i_title_vob_start_sector * DVD_LB_SIZE;
 441
 442             j = CSSGetKey( p_input->i_handle, p_dvd->p_css );
 443             if( j < 0 )
 444             {
 445                 intf_ErrMsg( "dvd error: fatal error in vts css key" );
 446                 free( p_dvd );
 447                 p_input->b_error = 1;
 448                 return -1;
 449             }
 450             else if( j > 0 )
 451             {
 452                 intf_ErrMsg( "dvd error: css decryption unavailable" );
 453                 free( p_dvd );
 454                 p_input->b_error = 1;
 455                 return -1;
 456             }
 457         }
 458
 459         /*
 460          * Angle management
 461          */
 462         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 463         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 464         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 465         {
 466             p_dvd->i_angle = 1;
 467         }
 468
 469         /*
 470          * Set selected title start and size
 471          */
 472
 473         /* title set offset */
 474         p_dvd->i_title_start = vts.i_pos + DVD_LB_SIZE *
 475                       (off_t)( vts.manager_inf.i_title_vob_start_sector );
 476
 477         /* last video cell */
 478         p_dvd->i_cell = 0;
 479         p_dvd->i_prg_cell = -1 +
 480             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 481
 482         if( DVDFindCell( p_dvd ) < 0 )
 483         {
 484             intf_ErrMsg( "dvd error: can't find title end" );
 485             p_input->b_error = 1;
 486             return -1;
 487         }
 488
 489         /* temporary hack to fix size in some dvds */
 490         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 491         {
 492             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 493         }
 494
 495         p_dvd->i_sector = 0;
 496         p_dvd->i_size = DVD_LB_SIZE *
 497           (off_t)( vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 498         intf_WarnMsg( 2, "dvd info: stream size 1: %lld @ %d", p_dvd->i_size,
 499                       vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 500
 501         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 502         {
 503             intf_ErrMsg( "dvd error: can't find first chapter" );
 504             p_input->b_error = 1;
 505             return -1;
 506         }
 507
 508         p_dvd->i_size -= (off_t)( p_dvd->i_sector + 1 ) *DVD_LB_SIZE;
 509
 510         IfoPrintTitle( p_dvd );
 511
 512 //        vlc_mutex_lock( &p_input->stream.stream_lock );
 513
 514         /* Area definition */
 515         p_input->stream.p_selected_area->i_start = p_dvd->i_start;
 516         p_input->stream.p_selected_area->i_size = p_dvd->i_size;
 517         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 518         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 519
 520         /*
 521          * Destroy obsolete ES by reinitializing program 0
 522          * and find all ES in title with ifo data
 523          */
 524         if( p_input->stream.pp_programs != NULL )
 525         {
 526             /* We don't use input_EndStream here since
 527              * we keep area structures */
 528
 529             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 530             {
 531                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 532             }
 533
 534             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 535
 536             p_input->stream.pp_selected_es = NULL;
 537             p_input->stream.i_selected_es_number = 0;
 538         }
 539
 540         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 541
 542         /* No PSM to read in DVD mode, we already have all information */
 543         p_input->stream.pp_programs[0]->b_is_ok = 1;
 544         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 545
 546         p_es = NULL;
 547
 548         /* ES 0 -> video MPEG2 */
 549         IfoPrintVideo( p_dvd );
 550
 551         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 552         p_es->i_stream_id = 0xe0;
 553         p_es->i_type = MPEG2_VIDEO_ES;
 554         p_es->i_cat = VIDEO_ES;
 555         intf_WarnMsg( 1, "dvd info: video mpeg2 stream" );
 556         if( p_main->b_video )
 557         {
 558             input_SelectES( p_input, p_es );
 559         }
 560         intf_WarnMsg( 4, "dvd info: video selected" );
 561
 562 #define audio_status \
 563     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 564         /* Audio ES, in the order they appear in .ifo */
 565         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 566         {
 567             IfoPrintAudio( p_dvd, i );
 568
 569             /* audio channel is active if first byte is 0x80 */
 570             if( audio_status.i_available )
 571             {
 572                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 573                 {
 574                 case 0x00:              /* AC3 */
 575                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 576                     p_es = input_AddES( p_input,
 577                                p_input->stream.pp_programs[0], i_id, 0 );
 578                     p_es->i_stream_id = 0xbd;
 579                     p_es->i_type = AC3_AUDIO_ES;
 580                     p_es->b_audio = 1;
 581                     p_es->i_cat = AUDIO_ES;
 582                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 583                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 584                     strcat( p_es->psz_desc, " (ac3)" );
 585
 586                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 587                                   i, p_es->psz_desc, i_id );
 588
 589                     break;
 590                 case 0x02:
 591                 case 0x03:              /* MPEG audio */
 592                     i_id = 0xc0 + audio_status.i_position;
 593                     p_es = input_AddES( p_input,
 594                                     p_input->stream.pp_programs[0], i_id, 0 );
 595                     p_es->i_stream_id = i_id;
 596                     p_es->i_type = MPEG2_AUDIO_ES;
 597                     p_es->b_audio = 1;
 598                     p_es->i_cat = AUDIO_ES;
 599                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 600                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 601                     strcat( p_es->psz_desc, " (mpeg)" );
 602
 603                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 604                                   i, p_es->psz_desc, i_id );
 605
 606                     break;
 607                 case 0x04:              /* LPCM */
 608
 609                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 610                     p_es = input_AddES( p_input,
 611                                     p_input->stream.pp_programs[0], i_id, 0 );
 612                     p_es->i_stream_id = i_id;
 613                     p_es->i_type = LPCM_AUDIO_ES;
 614                     p_es->b_audio = 1;
 615                     p_es->i_cat = AUDIO_ES;
 616                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 617                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 618                     strcat( p_es->psz_desc, " (lpcm)" );
 619
 620                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 621                                   i, p_es->psz_desc, i_id );
 622                     break;
 623                 case 0x06:              /* DTS */
 624                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 625                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 626                                  "(0x%x)", i_id );
 627                     break;
 628                 default:
 629                     i_id = 0;
 630                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 631                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 632                 }
 633             }
 634         }
 635 #undef audio_status
 636 #define spu_status \
 637     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 638
 639         /* Sub Picture ES */
 640
 641         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 642         {
 643             IfoPrintSpu( p_dvd, i );
 644
 645             if( spu_status.i_available )
 646             {
 647                 /*  there are several streams for one spu */
 648                 if(  vts.manager_inf.video_attr.i_ratio )
 649                 {
 650                     /* 16:9 */
 651                     switch( vts.manager_inf.video_attr.i_perm_displ )
 652                     {
 653                     case 1:
 654                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 655                                | 0xbd;
 656                         break;
 657                     case 2:
 658                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 659                                | 0xbd;
 660                         break;
 661                     default:
 662                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 663                                | 0xbd;
 664                         break;
 665                     }
 666                 }
 667                 else
 668                 {
 669                     /* 4:3 */
 670                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 671                            | 0xbd;
 672                 }
 673                 p_es = input_AddES( p_input,
 674                                     p_input->stream.pp_programs[0], i_id, 0 );
 675                 p_es->i_stream_id = 0xbd;
 676                 p_es->i_type = DVD_SPU_ES;
 677                 p_es->i_cat = SPU_ES;
 678                 strcpy( p_es->psz_desc, IfoLanguage( hton16(
 679                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 680                 intf_WarnMsg( 3, "dvd info: spu stream %d %s\t(0x%x)",
 681                               i, p_es->psz_desc, i_id );
 682             }
 683         }
 684 #undef spu_status
 685         if( p_main->b_audio )
 686         {
 687             /* For audio: first one if none or a not existing one specified */
 688             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 689             if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 690             {
 691                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 692                 i_audio = 1;
 693             }
 694             if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
 695             {
 696                 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 697             }
 698         }
 699
 700         if( p_main->b_video )
 701         {
 702             /* for spu, default is none */
 703             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 704             if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 705             {
 706                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 707                 i_spu = 0;
 708             }
 709             if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
 710             {
 711                 i_spu += vts.manager_inf.i_audio_nb;
 712                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 713             }
 714         }
 715     } /* i_title >= 0 */
 716     else
 717     {
 718         p_area = p_input->stream.p_selected_area;
 719     }
 720 #undef vts
 721 #undef vmg
 722
 723     /*
 724      * Chapter selection
 725      */
 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             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 734             {
 735                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 736                 p_input->b_error = 1;
 737                 return -1;
 738             }
 739
 740             p_input->stream.p_selected_area->i_tell = p_dvd->i_start -
 741                                                       p_area->i_start;
 742             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 743
 744             intf_WarnMsg( 2, "dvd info: chapter %d start at: %lld",
 745                                         p_area->i_part, p_area->i_tell );
 746         }
 747         else
 748         {
 749             p_area->i_part = 1;
 750             p_dvd->i_chapter = 1;
 751         }
 752     }
 753
 754 #define title \
 755     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 756     if( p_area->i_angle != p_dvd->i_angle )
 757     {
 758         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 759         {
 760             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 761             {
 762                 p_dvd->i_cell = 0;
 763             }
 764             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 765             p_dvd->i_angle = p_area->i_angle;
 766
 767             DVDFindSector( p_dvd );
 768             p_dvd->i_cell += p_dvd->i_angle_cell;
 769         }
 770         else
 771         {
 772             p_dvd->i_angle = p_area->i_angle;
 773         }
 774
 775         intf_WarnMsg( 2, "dvd info: angle %d selected", p_area->i_angle );
 776     }
 777
 778     /* warn interface that something has changed */
 779     p_input->stream.b_seekable = 1;
 780     p_input->stream.b_changed = 1;
 781
 782     p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_REINIT;
 783
 784     return 0;
 785 }
 786
 787
 788 /*****************************************************************************
 789  * DVDRead: reads data packets into the netlist.
 790  *****************************************************************************
 791  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 792  * EOF.
 793  *****************************************************************************/
 794 static int DVDRead( input_thread_t * p_input,
 795                     data_packet_t ** pp_packets )
 796 {
 797     thread_dvd_data_t *     p_dvd;
 798     dvd_netlist_t *         p_netlist;
 799     struct iovec *          p_vec;
 800     struct data_packet_s ** pp_data;
 801     u8 *                    pi_cur;
 802     int                     i_block_once;
 803     int                     i_packet_size;
 804     int                     i_iovec;
 805     int                     i_packet;
 806     int                     i_pos;
 807     int                     i_read_bytes;
 808     int                     i_read_blocks;
 809     off_t                   i_off;
 810     boolean_t               b_eof;
 811     boolean_t               b_eot;
 812
 813     pp_data = (struct data_packet_s **) malloc( p_input->i_read_once *
 814                                         sizeof( struct data_packet_s * ) );
 815     if( pp_data == NULL )
 816     {
 817         intf_ErrMsg( "dvd error: out of memory" );
 818         return -1;
 819     }
 820
 821     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 822     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 823
 824     /* Get an iovec pointer */
 825     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 826     {
 827         intf_ErrMsg( "dvd error: can't get iovec" );
 828         free( pp_data );
 829         return -1;
 830     }
 831
 832     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 833
 834     /* Get the position of the next cell if we're at cell end */
 835     if( i_block_once <= 0 )
 836     {
 837         int     i_angle;
 838
 839         p_dvd->i_cell++;
 840         p_dvd->i_angle_cell++;
 841
 842         /* Find cell index in adress map */
 843         if( DVDFindSector( p_dvd ) < 0 )
 844         {
 845             pp_packets[0] = NULL;
 846             intf_ErrMsg( "dvd error: can't find next cell" );
 847             free( pp_data );
 848             return 1;
 849         }
 850
 851         /* Position the fd pointer on the right address */
 852         i_off = lseek( p_dvd->i_fd,
 853                        p_dvd->i_title_start +
 854                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET );
 855
 856         /* update chapter : it will be easier when we have navigation
 857          * ES support */
 858         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 859         {
 860             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 861             {
 862                 i_angle = p_dvd->i_angle - 1;
 863             }
 864             else
 865             {
 866                 i_angle = 0;
 867             }
 868             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 869                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 870             {
 871                 p_dvd->i_chapter++;
 872             }
 873         }
 874
 875         vlc_mutex_lock( &p_input->stream.stream_lock );
 876
 877         p_input->stream.p_selected_area->i_tell = i_off -
 878                                     p_input->stream.p_selected_area->i_start;
 879         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 880
 881         /* the synchro has to be reinitialized when we change cell */
 882         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_REINIT;
 883
 884         vlc_mutex_unlock( &p_input->stream.stream_lock );
 885
 886         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 887     }
 888
 889     /* the number of blocks read is the maw between the requested
 890      * value and the leaving block in the cell */
 891     if( i_block_once > p_dvd->i_block_once )
 892     {
 893         i_block_once = p_dvd->i_block_once;
 894     }
 895 //intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 896
 897     p_netlist->i_read_once = i_block_once;
 898
 899     /* Reads from DVD */
 900     i_read_bytes = readv( p_dvd->i_fd, p_vec, i_block_once );
 901     i_read_blocks = ( i_read_bytes + 0x7ff ) >> 11;
 902
 903     /* Update netlist indexes */
 904     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 905
 906     /* Update global position */
 907     p_dvd->i_sector += i_read_blocks;
 908
 909     i_packet = 0;
 910
 911     /* Read headers to compute payload length */
 912     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 913     {
 914         if( p_dvd->b_encrypted )
 915         {
 916             CSSDescrambleSector( p_dvd->p_css->pi_title_key,
 917                                  p_vec[i_iovec].iov_base );
 918             ((u8*)(p_vec[i_iovec].iov_base))[0x14] &= 0x8F;
 919         }
 920
 921         i_pos = 0;
 922
 923         while( i_pos < p_netlist->i_buffer_size )
 924         {
 925             pi_cur = ((u8*)p_vec[i_iovec].iov_base + i_pos);
 926
 927             /*default header */
 928             if( U32_AT( pi_cur ) != 0x1BA )
 929             {
 930                 /* That's the case for all packets, except pack header. */
 931                 i_packet_size = U16_AT( pi_cur + 4 );
 932                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 933             }
 934             else
 935             {
 936                 /* Pack header. */
 937                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
 938                 {
 939                     /* MPEG-2 */
 940                     i_packet_size = 8;
 941                 }
 942                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
 943                 {
 944                     /* MPEG-1 */
 945                     i_packet_size = 6;
 946                 }
 947                 else
 948                 {
 949                     intf_ErrMsg( "Unable to determine stream type" );
 950                     free( pp_data );
 951                     return( -1 );
 952                 }
 953
 954                 pp_packets[i_packet] = pp_data[i_iovec];
 955
 956             }
 957
 958             (*pp_data[i_iovec]->pi_refcount)++;
 959
 960             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 961
 962             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 963
 964             pp_packets[i_packet]->p_payload_start =
 965                     pp_packets[i_packet]->p_buffer + i_pos;
 966
 967             pp_packets[i_packet]->p_payload_end =
 968                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 969
 970             pp_packets[i_packet]->p_next = NULL;
 971             pp_packets[i_packet]->b_discard_payload = 0;
 972
 973             i_packet++;
 974             i_pos += i_packet_size + 6;
 975         }
 976     }
 977
 978     pp_packets[i_packet] = NULL;
 979
 980     vlc_mutex_lock( &p_input->stream.stream_lock );
 981
 982     p_input->stream.p_selected_area->i_tell += i_read_bytes;
 983     b_eot = !( p_input->stream.p_selected_area->i_tell < p_dvd->i_size );
 984     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 985
 986     vlc_mutex_unlock( &p_input->stream.stream_lock );
 987
 988     free( pp_data );
 989
 990     if( b_eof )
 991     {
 992         return 1;
 993     }
 994
 995     if( b_eot )
 996     {
 997         intf_WarnMsg( 4, "dvd info: new title" );
 998         p_dvd->i_title++;
 999         vlc_mutex_lock( &p_input->stream.stream_lock );
1000         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
1001         vlc_mutex_unlock( &p_input->stream.stream_lock );
1002         return 0;
1003     }
1004
1005     if( i_read_blocks == i_block_once )
1006     {
1007         return 0;
1008     }
1009
1010     return -1;
1011 }
1012
1013 /*****************************************************************************
1014  * DVDRewind : reads a stream backward
1015  *****************************************************************************/
1016 static int DVDRewind( input_thread_t * p_input )
1017 {
1018     return( -1 );
1019 }
1020
1021 /*****************************************************************************
1022  * DVDSeek : Goes to a given position on the stream.
1023  *****************************************************************************
1024  * This one is used by the input and translate chronological position from
1025  * input to logical position on the device.
1026  * The lock should be taken before calling this function.
1027  *****************************************************************************/
1028 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1029 {
1030     thread_dvd_data_t *     p_dvd;
1031     off_t                   i_pos;
1032     int                     i_prg_cell;
1033     int                     i_cell;
1034     int                     i_chapter;
1035     int                     i_angle;
1036
1037     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1038
1039     /* we have to take care of offset of beginning of title */
1040     i_pos = i_off + p_input->stream.p_selected_area->i_start
1041                   - p_dvd->i_title_start;
1042
1043     /* update navigation data */
1044     p_dvd->i_sector = i_pos >> 11;
1045
1046     i_prg_cell = 0;
1047     i_chapter = 0;
1048
1049     /* parse vobu address map to find program cell */
1050     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1051     {
1052         i_prg_cell++;
1053     }
1054
1055     p_dvd->i_prg_cell = i_prg_cell;
1056
1057     if( DVDChooseAngle( p_dvd ) < 0 )
1058     {
1059         p_input->b_error = 1;
1060         return;
1061     }
1062
1063     p_dvd->i_cell = 0;
1064
1065     /* Find first title cell which is inside program cell */
1066     if( DVDFindCell( p_dvd ) < 0 )
1067     {
1068         /* no following cell : we're at eof */
1069         intf_ErrMsg( "dvd error: cell seeking failed" );
1070         p_input->b_error = 1;
1071         return;
1072     }
1073
1074     i_cell = p_dvd->i_cell;
1075
1076 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1077     /* parse cell address map to find title cell containing sector */
1078     while( cell.i_end_sector < p_dvd->i_sector )
1079     {
1080         i_cell++;
1081     }
1082
1083     p_dvd->i_cell = i_cell;
1084
1085     /* if we're inside a multi-angle zone, we have to choose i_sector
1086      * in the current angle ; we can't do it all the time since cells
1087      * can be very wide out of such zones */
1088     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1089     {
1090         p_dvd->i_sector = MAX(
1091                 cell.i_start_sector,
1092                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1093     }
1094
1095     p_dvd->i_end_sector = MIN(
1096             cell.i_end_sector,
1097             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1098 #undef cell
1099     /* update chapter */
1100     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1101     {
1102         i_angle = p_dvd->i_angle - 1;
1103     }
1104     else
1105     {
1106         i_angle = 0;
1107     }
1108     while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1109                 ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1110            ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1111     {
1112         i_chapter++;
1113     }
1114
1115     p_dvd->i_chapter = i_chapter;
1116     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1117
1118     p_input->stream.p_selected_area->i_tell =
1119                 lseek( p_dvd->i_fd, p_dvd->i_title_start +
1120                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET ) -
1121                 p_input->stream.p_selected_area->i_start;
1122 /*
1123     intf_WarnMsg( 3, "Program Cell: %d Cell: %d Chapter: %d",
1124                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1125 */
1126
1127     return;
1128 }
1129
1130 #define cell  p_dvd->p_ifo->vts.cell_inf
1131
1132 /*****************************************************************************
1133  * DVDFindCell: adjust the title cell index with the program cell
1134  *****************************************************************************/
1135 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1136 {
1137     int                 i_cell;
1138     int                 i_index;
1139
1140     i_cell = p_dvd->i_cell;
1141     i_index = p_dvd->i_prg_cell;
1142
1143     if( i_cell >= cell.i_cell_nb )
1144     {
1145         return -1;
1146     }
1147
1148     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1149                    cell.p_cell_map[i_cell].i_vob_id ) ||
1150       ( title.p_cell_pos[i_index].i_cell_id !=
1151                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1152            ( i_cell < cell.i_cell_nb - 1 ) )
1153     {
1154         i_cell++;
1155     }
1156
1157 /*
1158 intf_WarnMsg( 3, "FindCell: i_cell %d i_index %d found %d nb %d",
1159                     p_dvd->i_cell,
1160                     p_dvd->i_prg_cell,
1161                     i_cell,
1162                     cell.i_cell_nb );
1163 */
1164
1165     p_dvd->i_cell = i_cell;
1166
1167     return 0;
1168 }
1169
1170 #undef cell
1171
1172 /*****************************************************************************
1173  * DVDFindSector: find cell index in adress map from index in
1174  * information table program map and give corresponding sectors.
1175  *****************************************************************************/
1176 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1177 {
1178
1179     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1180     {
1181         p_dvd->i_prg_cell++;
1182
1183         if( DVDChooseAngle( p_dvd ) < 0 )
1184         {
1185             return -1;
1186         }
1187     }
1188
1189     if( DVDFindCell( p_dvd ) < 0 )
1190     {
1191         intf_ErrMsg( "dvd error: can't find sector" );
1192         return -1;
1193     }
1194
1195     /* Find start and end sectors of new cell */
1196 #if 1
1197     p_dvd->i_sector = MAX(
1198          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1199          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1200     p_dvd->i_end_sector = MIN(
1201          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1202          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1203 #else
1204     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1205     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1206 #endif
1207
1208 /*
1209     intf_WarnMsg( 3, "cell: %d sector1: 0x%x end1: 0x%x\n"
1210                    "index: %d sector2: 0x%x end2: 0x%x\n"
1211                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1212         p_dvd->i_cell,
1213         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1214         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1215         p_dvd->i_prg_cell,
1216         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1217         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1218         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1219         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1220         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1221 */
1222
1223     return 0;
1224 }
1225
1226 /*****************************************************************************
1227  * DVDChapterSelect: find the cell corresponding to requested chapter
1228  *****************************************************************************/
1229 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1230 {
1231
1232     /* Find cell index in Program chain for current chapter */
1233     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1234     p_dvd->i_cell = 0;
1235     p_dvd->i_sector = 0;
1236
1237     DVDChooseAngle( p_dvd );
1238
1239     /* Search for cell_index in cell adress_table and initialize
1240      * start sector */
1241     if( DVDFindSector( p_dvd ) < 0 )
1242     {
1243         intf_ErrMsg( "dvd error: can't select chapter" );
1244         return -1;
1245     }
1246
1247     /* start is : beginning of vts vobs + offset to vob x */
1248     p_dvd->i_start = p_dvd->i_title_start +
1249                          DVD_LB_SIZE * (off_t)( p_dvd->i_sector );
1250
1251     /* Position the fd pointer on the right address */
1252     p_dvd->i_start = lseek( p_dvd->i_fd, p_dvd->i_start, SEEK_SET );
1253
1254     p_dvd->i_chapter = i_chapter;
1255     return 0;
1256 }
1257
1258 /*****************************************************************************
1259  * DVDChooseAngle: select the cell corresponding to the selected angle
1260  *****************************************************************************/
1261 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1262 {
1263     /* basic handling of angles */
1264     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1265                     >> 12 ) )
1266     {
1267         /* we enter a muli-angle section */
1268         case 0x5:
1269             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1270             p_dvd->i_angle_cell = 0;
1271             break;
1272         /* we exit a multi-angle section */
1273         case 0x9:
1274         case 0xd:
1275             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1276             break;
1277     }
1278
1279     return 0;
1280 }
1281
1282 #undef title