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  *  -libdvdcss for access and unscrambling
   9  *  -dvd_ifo for ifo parsing and analyse
  10  *  -dvd_udf to find files
  11  *****************************************************************************
  12  * Copyright (C) 1998-2001 VideoLAN
  13  * $Id: input_dvd.c,v 1.78 2001/06/29 11:34:28 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
  43 #include "modules_inner.h"
  44
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47
  48 #ifdef HAVE_UNISTD_H
  49 #   include <unistd.h>
  50 #endif
  51
  52 #include <fcntl.h>
  53 #include <sys/types.h>
  54 #include <string.h>
  55 #include <errno.h>
  56
  57 #ifdef STRNCASECMP_IN_STRINGS_H
  58 #   include <strings.h>
  59 #endif
  60
  61 #if defined( WIN32 )
  62 #   include <io.h>
  63 #   include "input_iovec.h"
  64 #else
  65 #   include <sys/uio.h>                                      /* struct iovec */
  66 #endif
  67
  68 #include <videolan/dvdcss.h>
  69
  70 #include "config.h"
  71 #include "common.h"
  72 #include "threads.h"
  73 #include "mtime.h"
  74 #include "tests.h"
  75
  76 #include "intf_msg.h"
  77
  78 #include "main.h"
  79
  80 #include "stream_control.h"
  81 #include "input_ext-intf.h"
  82 #include "input_ext-dec.h"
  83
  84 #include "input.h"
  85
  86 #include "input_dvd.h"
  87 #include "dvd_netlist.h"
  88 #include "dvd_ifo.h"
  89 #include "dvd_summary.h"
  90 #include "mpeg_system.h"
  91
  92 #include "debug.h"
  93
  94 #include "modules.h"
  95 #include "modules_export.h"
  96
  97 /* how many blocks DVDRead will read in each loop */
  98 #define DVD_BLOCK_READ_ONCE 64
  99 #define DVD_DATA_READ_ONCE  (4 * DVD_BLOCK_READ_ONCE)
 100
 101 /* Size of netlist */
 102 #define DVD_NETLIST_SIZE    256
 103
 104 /*****************************************************************************
 105  * Local prototypes
 106  *****************************************************************************/
 107 /* called from outside */
 108 static int  DVDProbe    ( probedata_t *p_data );
 109 static void DVDInit     ( struct input_thread_s * );
 110 static void DVDEnd      ( struct input_thread_s * );
 111 static void DVDOpen     ( struct input_thread_s * );
 112 static void DVDClose    ( struct input_thread_s * );
 113 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 114 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 115 static void DVDSeek     ( struct input_thread_s *, off_t );
 116 static int  DVDRewind   ( struct input_thread_s * );
 117
 118 /* called only inside */
 119 static int  DVDChooseAngle( thread_dvd_data_t * );
 120 static int  DVDFindCell( thread_dvd_data_t * );
 121 static int  DVDFindSector( thread_dvd_data_t * );
 122 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 123
 124 /*****************************************************************************
 125  * Functions exported as capabilities. They are declared as static so that
 126  * we don't pollute the namespace too much.
 127  *****************************************************************************/
 128 void _M( input_getfunctions )( function_list_t * p_function_list )
 129 {
 130 #define input p_function_list->functions.input
 131     p_function_list->pf_probe = DVDProbe;
 132     input.pf_init             = DVDInit;
 133     input.pf_open             = DVDOpen;
 134     input.pf_close            = DVDClose;
 135     input.pf_end              = DVDEnd;
 136     input.pf_init_bit_stream  = InitBitstream;
 137     input.pf_read             = DVDRead;
 138     input.pf_set_area         = DVDSetArea;
 139     input.pf_demux            = input_DemuxPS;
 140     input.pf_new_packet       = DVDNewPacket;
 141     input.pf_new_pes          = DVDNewPES;
 142     input.pf_delete_packet    = DVDDeletePacket;
 143     input.pf_delete_pes       = DVDDeletePES;
 144     input.pf_rewind           = DVDRewind;
 145     input.pf_seek             = DVDSeek;
 146 #undef input
 147 }
 148
 149 /*
 150  * Data reading functions
 151  */
 152
 153 /*****************************************************************************
 154  * DVDProbe: verifies that the stream is a PS stream
 155  *****************************************************************************/
 156 static int DVDProbe( probedata_t *p_data )
 157 {
 158     input_thread_t * p_input = (input_thread_t *)p_data;
 159
 160     char * psz_name = p_input->p_source;
 161     int i_score = 5;
 162
 163     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 164     {
 165 #ifdef HAVE_CSS
 166         return( 999 );
 167 #else /* HAVE_CSS */
 168         return( 998 );
 169 #endif /* HAVE_CSS */
 170     }
 171
 172     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 173     {
 174         /* If the user specified "dvd:" then it's probably a DVD */
 175 #ifdef HAVE_CSS
 176         i_score = 100;
 177 #else /* HAVE_CSS */
 178         i_score = 90;
 179 #endif /* HAVE_CSS */
 180         psz_name += 4;
 181     }
 182
 183     return( i_score );
 184 }
 185
 186 /*****************************************************************************
 187  * DVDInit: initializes DVD structures
 188  *****************************************************************************/
 189 static void DVDInit( input_thread_t * p_input )
 190 {
 191     thread_dvd_data_t *  p_dvd;
 192     input_area_t *       p_area;
 193     int                  i_title;
 194     int                  i_chapter;
 195     int                  i;
 196
 197     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 198     if( p_dvd == NULL )
 199     {
 200         intf_ErrMsg( "dvd error: out of memory" );
 201         p_input->b_error = 1;
 202         return;
 203     }
 204
 205     p_input->p_plugin_data = (void *)p_dvd;
 206     p_input->p_method_data = NULL;
 207
 208     p_dvd->dvdhandle = (dvdcss_handle) p_input->i_handle;
 209
 210     dvdcss_seek( p_dvd->dvdhandle, 0 );
 211
 212     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 213      * DVD_DATA_READ_ONCE at most */
 214     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 215     /* this value mustn't be modifed */
 216     p_input->i_read_once = DVD_DATA_READ_ONCE;
 217
 218     /* Reading structures initialisation */
 219     p_input->p_method_data =
 220         DVDNetlistInit( DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
 221                         DVD_NETLIST_SIZE, DVD_LB_SIZE, p_dvd->i_block_once );
 222     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 223
 224     /* Ifo allocation & initialisation */
 225     if( IfoCreate( p_dvd ) < 0 )
 226     {
 227         intf_ErrMsg( "dvd error: allcation error in ifo" );
 228         dvdcss_close( p_dvd->dvdhandle );
 229         free( p_dvd );
 230         p_input->b_error = 1;
 231         return;
 232     }
 233
 234     if( IfoInit( p_dvd->p_ifo ) < 0 )
 235     {
 236         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 237         IfoDestroy( p_dvd->p_ifo );
 238         dvdcss_close( p_dvd->dvdhandle );
 239         free( p_dvd );
 240         p_input->b_error = 1;
 241         return;
 242     }
 243
 244     /* Set stream and area data */
 245     vlc_mutex_lock( &p_input->stream.stream_lock );
 246
 247     /* Initialize ES structures */
 248     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 249
 250     /* disc input method */
 251     p_input->stream.i_method = INPUT_METHOD_DVD;
 252
 253 #define title_inf p_dvd->p_ifo->vmg.title_inf
 254     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 255
 256 #define area p_input->stream.pp_areas
 257     /* We start from 1 here since the default area 0
 258      * is reserved for video_ts.vob */
 259     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 260     {
 261         input_AddArea( p_input );
 262
 263         /* Titles are Program Chains */
 264         area[i]->i_id = i;
 265
 266         /* Absolute start offset and size
 267          * We can only set that with vts ifo, so we do it during the
 268          * first call to DVDSetArea */
 269         area[i]->i_start = 0;
 270         area[i]->i_size = 0;
 271
 272         /* Number of chapters */
 273         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 274         area[i]->i_part = 1;
 275
 276         /* Number of angles */
 277         area[i]->i_angle_nb = 0;
 278         area[i]->i_angle = 1;
 279
 280         /* Offset to vts_i_0.ifo */
 281         area[i]->i_plugin_data = p_dvd->p_ifo->i_start +
 282                        title_inf.p_attr[i-1].i_start_sector;
 283     }
 284 #undef area
 285
 286     /* Get requested title - if none try the first title */
 287     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 288     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 289     {
 290         i_title = 1;
 291     }
 292
 293 #undef title_inf
 294
 295     /* Get requested chapter - if none defaults to first one */
 296     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 297     if( i_chapter <= 0 )
 298     {
 299         i_chapter = 1;
 300     }
 301
 302     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 303
 304     p_area = p_input->stream.pp_areas[i_title];
 305
 306     /* set title, chapter, audio and subpic */
 307     DVDSetArea( p_input, p_area );
 308
 309     vlc_mutex_unlock( &p_input->stream.stream_lock );
 310
 311     return;
 312 }
 313
 314 /*****************************************************************************
 315  * DVDOpen: open dvd
 316  *****************************************************************************/
 317 static void DVDOpen( struct input_thread_s *p_input )
 318 {
 319     dvdcss_handle dvdhandle;
 320
 321     vlc_mutex_lock( &p_input->stream.stream_lock );
 322
 323     /* If we are here we can control the pace... */
 324     p_input->stream.b_pace_control = 1;
 325
 326     p_input->stream.b_seekable = 1;
 327     p_input->stream.p_selected_area->i_size = 0;
 328
 329     p_input->stream.p_selected_area->i_tell = 0;
 330
 331     vlc_mutex_unlock( &p_input->stream.stream_lock );
 332
 333     /* XXX: put this shit in an access plugin */
 334     if( strlen( p_input->p_source ) > 4
 335          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 336     {
 337         dvdhandle = dvdcss_open( p_input->p_source + 4,
 338                                         DVDCSS_INIT_QUIET );
 339     }
 340     else
 341     {
 342         dvdhandle = dvdcss_open( p_input->p_source,
 343                                         DVDCSS_INIT_QUIET );
 344     }
 345
 346     if( dvdhandle == NULL )
 347     {
 348         p_input->b_error = 1;
 349         return;
 350     }
 351
 352     p_input->i_handle = (int) dvdhandle;
 353 }
 354
 355 /*****************************************************************************
 356  * DVDClose: close dvd
 357  *****************************************************************************/
 358 static void DVDClose( struct input_thread_s *p_input )
 359 {
 360     /* Clean up libdvdcss */
 361     dvdcss_close( (dvdcss_handle) p_input->i_handle );
 362 }
 363
 364 /*****************************************************************************
 365  * DVDEnd: frees unused data
 366  *****************************************************************************/
 367 static void DVDEnd( input_thread_t * p_input )
 368 {
 369     thread_dvd_data_t *     p_dvd;
 370     dvd_netlist_t *         p_netlist;
 371
 372     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 373     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 374
 375     IfoDestroy( p_dvd->p_ifo );
 376
 377     free( p_dvd );
 378
 379     DVDNetlistEnd( p_netlist );
 380 }
 381
 382 /*****************************************************************************
 383  * DVDSetArea: initialize input data for title x, chapter y.
 384  * It should be called for each user navigation request.
 385  *****************************************************************************
 386  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 387  * Note that you have to take the lock before entering here.
 388  *****************************************************************************/
 389 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 390 {
 391     thread_dvd_data_t *  p_dvd;
 392     es_descriptor_t *    p_es;
 393     u16                  i_id;
 394     int                  i_vts_title;
 395     int                  i_audio;
 396     int                  i_spu;
 397     int                  i;
 398
 399     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 400
 401     /* we can't use the interface slider until initilization is complete */
 402     p_input->stream.b_seekable = 0;
 403
 404     if( p_area != p_input->stream.p_selected_area )
 405     {
 406
 407         /*
 408          *  We have to load all title information
 409          */
 410         /* Change the default area */
 411         p_input->stream.p_selected_area =
 412                     p_input->stream.pp_areas[p_area->i_id];
 413
 414         /* title number: it is not vts nb!,
 415          * it is what appears in the interface list */
 416         p_dvd->i_title = p_area->i_id;
 417         p_dvd->p_ifo->i_title = p_dvd->i_title;
 418
 419         /* set number of chapters of current title */
 420         p_dvd->i_chapter_nb = p_area->i_part_nb;
 421
 422         /* ifo vts */
 423         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 424         {
 425             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 426             free( p_dvd );
 427             p_input->b_error = 1;
 428             return -1;
 429         }
 430
 431 #define vmg p_dvd->p_ifo->vmg
 432 #define vts p_dvd->p_ifo->vts
 433         /* title position inside the selected vts */
 434         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 435         p_dvd->i_title_id =
 436             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 437
 438         intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
 439                          p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
 440
 441         /*
 442          * CSS cracking has to be done again
 443          */
 444         dvdcss_crack( p_dvd->dvdhandle,
 445                       vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_set_num,
 446                       vts.i_pos + vts.manager_inf.i_title_vob_start_sector );
 447
 448         /*
 449          * Angle management
 450          */
 451         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 452         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 453         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 454         {
 455             p_dvd->i_angle = 1;
 456         }
 457
 458         /*
 459          * Set selected title start and size
 460          */
 461
 462         /* title set offset XXX: convert to block values */
 463         p_dvd->i_title_start =
 464             vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
 465
 466         /* last video cell */
 467         p_dvd->i_cell = 0;
 468         p_dvd->i_prg_cell = -1 +
 469             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 470
 471         if( DVDFindCell( p_dvd ) < 0 )
 472         {
 473             intf_ErrMsg( "dvd error: can't find title end" );
 474             p_input->b_error = 1;
 475             return -1;
 476         }
 477
 478         /* temporary hack to fix size in some dvds */
 479         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 480         {
 481             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 482         }
 483
 484         p_dvd->i_sector = 0;
 485         p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
 486
 487         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 488         {
 489             intf_ErrMsg( "dvd error: can't find first chapter" );
 490             p_input->b_error = 1;
 491             return -1;
 492         }
 493
 494         p_dvd->i_size -= p_dvd->i_sector + 1;
 495
 496         IfoPrintTitle( p_dvd );
 497
 498         /* Area definition */
 499         p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
 500         p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
 501         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 502         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 503
 504         /* start at the beginning of the title */
 505         /* FIXME: create a conf option to select whether to restart
 506          * title or not */
 507         p_input->stream.p_selected_area->i_tell = 0;
 508         p_input->stream.p_selected_area->i_part = 1;
 509
 510         /*
 511          * Destroy obsolete ES by reinitializing program 0
 512          * and find all ES in title with ifo data
 513          */
 514         if( p_input->stream.pp_programs != NULL )
 515         {
 516             /* We don't use input_EndStream here since
 517              * we keep area structures */
 518
 519             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 520             {
 521                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 522             }
 523
 524             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 525
 526             p_input->stream.pp_selected_es = NULL;
 527             p_input->stream.i_selected_es_number = 0;
 528         }
 529
 530         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 531
 532         /* No PSM to read in DVD mode, we already have all information */
 533         p_input->stream.pp_programs[0]->b_is_ok = 1;
 534
 535         p_es = NULL;
 536
 537         /* ES 0 -> video MPEG2 */
 538         IfoPrintVideo( p_dvd );
 539
 540         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 541         p_es->i_stream_id = 0xe0;
 542         p_es->i_type = MPEG2_VIDEO_ES;
 543         p_es->i_cat = VIDEO_ES;
 544         if( p_main->b_video )
 545         {
 546             input_SelectES( p_input, p_es );
 547         }
 548
 549 #define audio_status \
 550     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 551         /* Audio ES, in the order they appear in .ifo */
 552         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 553         {
 554             IfoPrintAudio( p_dvd, i );
 555
 556             /* audio channel is active if first byte is 0x80 */
 557             if( audio_status.i_available )
 558             {
 559                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 560                 {
 561                 case 0x00:              /* AC3 */
 562                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 563                     p_es = input_AddES( p_input,
 564                                p_input->stream.pp_programs[0], i_id, 0 );
 565                     p_es->i_stream_id = 0xbd;
 566                     p_es->i_type = AC3_AUDIO_ES;
 567                     p_es->b_audio = 1;
 568                     p_es->i_cat = AUDIO_ES;
 569                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 570                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 571                     strcat( p_es->psz_desc, " (ac3)" );
 572
 573                     break;
 574                 case 0x02:
 575                 case 0x03:              /* MPEG audio */
 576                     i_id = 0xc0 + audio_status.i_position;
 577                     p_es = input_AddES( p_input,
 578                                     p_input->stream.pp_programs[0], i_id, 0 );
 579                     p_es->i_stream_id = i_id;
 580                     p_es->i_type = MPEG2_AUDIO_ES;
 581                     p_es->b_audio = 1;
 582                     p_es->i_cat = AUDIO_ES;
 583                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 584                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 585                     strcat( p_es->psz_desc, " (mpeg)" );
 586
 587                     break;
 588                 case 0x04:              /* LPCM */
 589
 590                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 591                     p_es = input_AddES( p_input,
 592                                     p_input->stream.pp_programs[0], i_id, 0 );
 593                     p_es->i_stream_id = i_id;
 594                     p_es->i_type = LPCM_AUDIO_ES;
 595                     p_es->b_audio = 1;
 596                     p_es->i_cat = AUDIO_ES;
 597                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 598                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 599                     strcat( p_es->psz_desc, " (lpcm)" );
 600
 601                     break;
 602                 case 0x06:              /* DTS */
 603                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 604                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 605                                  "(0x%x)", i_id );
 606                     break;
 607                 default:
 608                     i_id = 0;
 609                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 610                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 611                 }
 612             }
 613         }
 614 #undef audio_status
 615 #define spu_status \
 616     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 617
 618         /* Sub Picture ES */
 619
 620         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 621         {
 622             IfoPrintSpu( p_dvd, i );
 623
 624             if( spu_status.i_available )
 625             {
 626                 /*  there are several streams for one spu */
 627                 if(  vts.manager_inf.video_attr.i_ratio )
 628                 {
 629                     /* 16:9 */
 630                     switch( vts.manager_inf.video_attr.i_perm_displ )
 631                     {
 632                     case 1:
 633                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 634                                | 0xbd;
 635                         break;
 636                     case 2:
 637                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 638                                | 0xbd;
 639                         break;
 640                     default:
 641                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 642                                | 0xbd;
 643                         break;
 644                     }
 645                 }
 646                 else
 647                 {
 648                     /* 4:3 */
 649                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 650                            | 0xbd;
 651                 }
 652                 p_es = input_AddES( p_input,
 653                                     p_input->stream.pp_programs[0], i_id, 0 );
 654                 p_es->i_stream_id = 0xbd;
 655                 p_es->i_type = DVD_SPU_ES;
 656                 p_es->i_cat = SPU_ES;
 657                 strcpy( p_es->psz_desc, IfoLanguage( hton16(
 658                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 659             }
 660         }
 661 #undef spu_status
 662         if( p_main->b_audio )
 663         {
 664             /* For audio: first one if none or a not existing one specified */
 665             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 666             if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 667             {
 668                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 669                 i_audio = 1;
 670             }
 671             if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
 672             {
 673                 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 674             }
 675         }
 676
 677         if( p_main->b_video )
 678         {
 679             /* for spu, default is none */
 680             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 681             if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 682             {
 683                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 684                 i_spu = 0;
 685             }
 686             if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
 687             {
 688                 i_spu += vts.manager_inf.i_audio_nb;
 689                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 690             }
 691         }
 692     } /* i_title >= 0 */
 693     else
 694     {
 695         p_area = p_input->stream.p_selected_area;
 696     }
 697 #undef vts
 698 #undef vmg
 699
 700     /*
 701      * Chapter selection
 702      */
 703
 704     if( p_area->i_part != p_dvd->i_chapter )
 705     {
 706         if( ( p_area->i_part > 0 ) &&
 707             ( p_area->i_part <= p_area->i_part_nb ))
 708         {
 709             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 710             {
 711                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 712                 p_input->b_error = 1;
 713                 return -1;
 714             }
 715
 716             p_input->stream.p_selected_area->i_tell =
 717                                    LB2OFF( p_dvd->i_start ) - p_area->i_start;
 718             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 719
 720             intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
 721                                         p_area->i_part, p_area->i_tell );
 722         }
 723         else
 724         {
 725             p_area->i_part = 1;
 726             p_dvd->i_chapter = 1;
 727         }
 728     }
 729
 730 #define title \
 731     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 732     if( p_area->i_angle != p_dvd->i_angle )
 733     {
 734         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 735         {
 736             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 737             {
 738                 p_dvd->i_cell = 0;
 739             }
 740             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 741             p_dvd->i_angle = p_area->i_angle;
 742
 743             DVDFindSector( p_dvd );
 744             p_dvd->i_cell += p_dvd->i_angle_cell;
 745         }
 746         else
 747         {
 748             p_dvd->i_angle = p_area->i_angle;
 749         }
 750
 751         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 752     }
 753
 754     /* warn interface that something has changed */
 755     p_input->stream.b_seekable = 1;
 756     p_input->stream.b_changed = 1;
 757
 758     return 0;
 759 }
 760
 761
 762 /*****************************************************************************
 763  * DVDRead: reads data packets into the netlist.
 764  *****************************************************************************
 765  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 766  * EOF.
 767  *****************************************************************************/
 768 static int DVDRead( input_thread_t * p_input,
 769                     data_packet_t ** pp_packets )
 770 {
 771     thread_dvd_data_t *     p_dvd;
 772     dvd_netlist_t *         p_netlist;
 773     struct iovec *          p_vec;
 774     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 775     u8 *                    pi_cur;
 776     int                     i_block_once;
 777     int                     i_packet_size;
 778     int                     i_iovec;
 779     int                     i_packet;
 780     int                     i_pos;
 781     int                     i_read_blocks;
 782     int                     i_sector;
 783     boolean_t               b_eof;
 784     boolean_t               b_eot;
 785     boolean_t               b_eoc;
 786
 787     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 788     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 789
 790     b_eoc = 0;
 791     i_sector = p_dvd->i_title_start + p_dvd->i_sector;
 792     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 793
 794     /* Get the position of the next cell if we're at cell end */
 795     if( i_block_once <= 0 )
 796     {
 797         int     i_angle;
 798
 799         p_dvd->i_cell++;
 800         p_dvd->i_angle_cell++;
 801
 802         /* Find cell index in adress map */
 803         if( DVDFindSector( p_dvd ) < 0 )
 804         {
 805             pp_packets[0] = NULL;
 806             intf_ErrMsg( "dvd error: can't find next cell" );
 807             return 1;
 808         }
 809
 810         /* Position the fd pointer on the right address */
 811         i_sector = dvdcss_seek( p_dvd->dvdhandle,
 812                                 p_dvd->i_title_start + p_dvd->i_sector );
 813
 814         /* update chapter : it will be easier when we have navigation
 815          * ES support */
 816         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 817         {
 818             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 819             {
 820                 i_angle = p_dvd->i_angle - 1;
 821             }
 822             else
 823             {
 824                 i_angle = 0;
 825             }
 826             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 827                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 828             {
 829                 p_dvd->i_chapter++;
 830                 b_eoc = 1;
 831             }
 832         }
 833
 834         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 835     }
 836
 837     /* The number of blocks read is the max between the requested
 838      * value and the leaving block in the cell */
 839     if( i_block_once > p_dvd->i_block_once )
 840     {
 841         i_block_once = p_dvd->i_block_once;
 842     }
 843 /*
 844 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 845 */
 846     p_netlist->i_read_once = i_block_once;
 847
 848     /* Get an iovec pointer */
 849     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 850     {
 851         intf_ErrMsg( "dvd error: can't get iovec" );
 852         return -1;
 853     }
 854
 855     /* Reads from DVD */
 856     i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
 857                                   i_block_once, DVDCSS_READ_DECRYPT );
 858
 859     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 860      * need know the real number of blocks read */
 861     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 862
 863     /* Update global position */
 864     p_dvd->i_sector += i_read_blocks;
 865
 866     i_packet = 0;
 867
 868     /* Read headers to compute payload length */
 869     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 870     {
 871         i_pos = 0;
 872
 873         while( i_pos < p_netlist->i_buffer_size )
 874         {
 875             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 876
 877             /*default header */
 878             if( U32_AT( pi_cur ) != 0x1BA )
 879             {
 880                 /* That's the case for all packets, except pack header. */
 881                 i_packet_size = U16_AT( pi_cur + 4 );
 882                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 883             }
 884             else
 885             {
 886                 /* MPEG-2 Pack header. */
 887                 i_packet_size = 8;
 888                 pp_packets[i_packet] = pp_data[i_iovec];
 889
 890             }
 891
 892             (*pp_data[i_iovec]->pi_refcount)++;
 893
 894             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 895
 896             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 897
 898             pp_packets[i_packet]->p_payload_start =
 899                     pp_packets[i_packet]->p_buffer + i_pos;
 900
 901             pp_packets[i_packet]->p_payload_end =
 902                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 903
 904             pp_packets[i_packet]->p_next = NULL;
 905             pp_packets[i_packet]->b_discard_payload = 0;
 906
 907             i_packet++;
 908             i_pos += i_packet_size + 6;
 909         }
 910     }
 911
 912     pp_packets[i_packet] = NULL;
 913
 914     vlc_mutex_lock( &p_input->stream.stream_lock );
 915
 916     p_input->stream.p_selected_area->i_tell =
 917         LB2OFF( i_sector + i_read_blocks ) -
 918         p_input->stream.p_selected_area->i_start;
 919     if( b_eoc )
 920     {
 921         /* We modify i_part only at end of chapter not to erase
 922          * some modification from the interface */
 923         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 924     }
 925
 926     b_eot = !( p_input->stream.p_selected_area->i_tell
 927                   < p_input->stream.p_selected_area->i_size );
 928     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 929
 930     vlc_mutex_unlock( &p_input->stream.stream_lock );
 931
 932     if( b_eof )
 933     {
 934         return 1;
 935     }
 936
 937     if( b_eot )
 938     {
 939         intf_WarnMsg( 4, "dvd info: new title" );
 940         p_dvd->i_title++;
 941         vlc_mutex_lock( &p_input->stream.stream_lock );
 942         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 943         vlc_mutex_unlock( &p_input->stream.stream_lock );
 944         return 0;
 945     }
 946
 947     if( i_read_blocks == i_block_once )
 948     {
 949         return 0;
 950     }
 951
 952     return -1;
 953 }
 954
 955 /*****************************************************************************
 956  * DVDRewind : reads a stream backward
 957  *****************************************************************************/
 958 static int DVDRewind( input_thread_t * p_input )
 959 {
 960     return( -1 );
 961 }
 962
 963 /*****************************************************************************
 964  * DVDSeek : Goes to a given position on the stream.
 965  *****************************************************************************
 966  * This one is used by the input and translate chronological position from
 967  * input to logical position on the device.
 968  * The lock should be taken before calling this function.
 969  *****************************************************************************/
 970 static void DVDSeek( input_thread_t * p_input, off_t i_off )
 971 {
 972     thread_dvd_data_t *     p_dvd;
 973     int                     i_prg_cell;
 974     int                     i_cell;
 975     int                     i_chapter;
 976     int                     i_angle;
 977
 978     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 979
 980     /* we have to take care of offset of beginning of title */
 981     p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
 982                        - p_dvd->i_title_start;
 983
 984     i_prg_cell = 0;
 985     i_chapter = 0;
 986
 987     /* parse vobu address map to find program cell */
 988     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
 989     {
 990         i_prg_cell++;
 991     }
 992
 993     p_dvd->i_prg_cell = i_prg_cell;
 994
 995     if( DVDChooseAngle( p_dvd ) < 0 )
 996     {
 997         p_input->b_error = 1;
 998         return;
 999     }
1000
1001     p_dvd->i_cell = 0;
1002
1003     /* Find first title cell which is inside program cell */
1004     if( DVDFindCell( p_dvd ) < 0 )
1005     {
1006         /* no following cell : we're at eof */
1007         intf_ErrMsg( "dvd error: cell seeking failed" );
1008         p_input->b_error = 1;
1009         return;
1010     }
1011
1012     i_cell = p_dvd->i_cell;
1013
1014 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1015     /* parse cell address map to find title cell containing sector */
1016     while( cell.i_end_sector < p_dvd->i_sector )
1017     {
1018         i_cell++;
1019     }
1020
1021     p_dvd->i_cell = i_cell;
1022
1023     /* if we're inside a multi-angle zone, we have to choose i_sector
1024      * in the current angle ; we can't do it all the time since cells
1025      * can be very wide out of such zones */
1026     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1027     {
1028         p_dvd->i_sector = MAX(
1029                 cell.i_start_sector,
1030                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1031     }
1032
1033     p_dvd->i_end_sector = MIN(
1034             cell.i_end_sector,
1035             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1036 #undef cell
1037     /* update chapter */
1038     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1039     {
1040         i_angle = p_dvd->i_angle - 1;
1041     }
1042     else
1043     {
1044         i_angle = 0;
1045     }
1046     if( p_dvd->i_chapter_nb > 1 )
1047     {
1048         while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1049                     ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1050                ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1051         {
1052             i_chapter++;
1053         }
1054     }
1055     else
1056     {
1057         i_chapter = 1;
1058     }
1059
1060     p_dvd->i_chapter = i_chapter;
1061     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1062
1063     p_input->stream.p_selected_area->i_tell =
1064         LB2OFF ( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_title_start
1065                                                  + p_dvd->i_sector ) )
1066          - p_input->stream.p_selected_area->i_start;
1067
1068     intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1069                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1070
1071
1072     return;
1073 }
1074
1075 #define cell  p_dvd->p_ifo->vts.cell_inf
1076
1077 /*****************************************************************************
1078  * DVDFindCell: adjust the title cell index with the program cell
1079  *****************************************************************************/
1080 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1081 {
1082     int                 i_cell;
1083     int                 i_index;
1084
1085     i_cell = p_dvd->i_cell;
1086     i_index = p_dvd->i_prg_cell;
1087
1088     if( i_cell >= cell.i_cell_nb )
1089     {
1090         return -1;
1091     }
1092
1093     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1094                    cell.p_cell_map[i_cell].i_vob_id ) ||
1095       ( title.p_cell_pos[i_index].i_cell_id !=
1096                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1097            ( i_cell < cell.i_cell_nb - 1 ) )
1098     {
1099         i_cell++;
1100     }
1101
1102 /*
1103 intf_WarnMsg( 7, "FindCell: i_cell %d i_index %d found %d nb %d",
1104                     p_dvd->i_cell,
1105                     p_dvd->i_prg_cell,
1106                     i_cell,
1107                     cell.i_cell_nb );
1108 */
1109
1110     p_dvd->i_cell = i_cell;
1111
1112     return 0;
1113 }
1114
1115 #undef cell
1116
1117 /*****************************************************************************
1118  * DVDFindSector: find cell index in adress map from index in
1119  * information table program map and give corresponding sectors.
1120  *****************************************************************************/
1121 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1122 {
1123
1124     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1125     {
1126         p_dvd->i_prg_cell++;
1127
1128         if( DVDChooseAngle( p_dvd ) < 0 )
1129         {
1130             return -1;
1131         }
1132     }
1133
1134     if( DVDFindCell( p_dvd ) < 0 )
1135     {
1136         intf_ErrMsg( "dvd error: can't find sector" );
1137         return -1;
1138     }
1139
1140     /* Find start and end sectors of new cell */
1141 #if 1
1142     p_dvd->i_sector = MAX(
1143          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1144          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1145     p_dvd->i_end_sector = MIN(
1146          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1147          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1148 #else
1149     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1150     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1151 #endif
1152
1153 /*
1154     intf_WarnMsg( 7, "cell: %d sector1: 0x%x end1: 0x%x\n"
1155                    "index: %d sector2: 0x%x end2: 0x%x\n"
1156                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1157         p_dvd->i_cell,
1158         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1159         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1160         p_dvd->i_prg_cell,
1161         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1162         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1163         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1164         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1165         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1166 */
1167
1168     return 0;
1169 }
1170
1171 /*****************************************************************************
1172  * DVDChapterSelect: find the cell corresponding to requested chapter
1173  *****************************************************************************/
1174 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1175 {
1176
1177     /* Find cell index in Program chain for current chapter */
1178     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1179     p_dvd->i_cell = 0;
1180     p_dvd->i_sector = 0;
1181
1182     DVDChooseAngle( p_dvd );
1183
1184     /* Search for cell_index in cell adress_table and initialize
1185      * start sector */
1186     if( DVDFindSector( p_dvd ) < 0 )
1187     {
1188         intf_ErrMsg( "dvd error: can't select chapter" );
1189         return -1;
1190     }
1191
1192     /* start is : beginning of vts vobs + offset to vob x */
1193     p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1194
1195     /* Position the fd pointer on the right address */
1196     p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start );
1197
1198     p_dvd->i_chapter = i_chapter;
1199     return 0;
1200 }
1201
1202 /*****************************************************************************
1203  * DVDChooseAngle: select the cell corresponding to the selected angle
1204  *****************************************************************************/
1205 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1206 {
1207     /* basic handling of angles */
1208     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1209                     >> 12 ) )
1210     {
1211         /* we enter a muli-angle section */
1212         case 0x5:
1213             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1214             p_dvd->i_angle_cell = 0;
1215             break;
1216         /* we exit a multi-angle section */
1217         case 0x9:
1218         case 0xd:
1219             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1220             break;
1221     }
1222
1223     return 0;
1224 }
1225
1226 #undef title