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 1.79 2001/07/11 02:01:04 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
  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, DVDCSS_INIT_QUIET );
 338     }
 339     else
 340     {
 341         dvdhandle = dvdcss_open( p_input->p_source, DVDCSS_INIT_QUIET );
 342     }
 343
 344     if( dvdhandle == NULL )
 345     {
 346         p_input->b_error = 1;
 347         return;
 348     }
 349
 350     p_input->i_handle = (int) dvdhandle;
 351 }
 352
 353 /*****************************************************************************
 354  * DVDClose: close dvd
 355  *****************************************************************************/
 356 static void DVDClose( struct input_thread_s *p_input )
 357 {
 358     /* Clean up libdvdcss */
 359     dvdcss_close( (dvdcss_handle) p_input->i_handle );
 360 }
 361
 362 /*****************************************************************************
 363  * DVDEnd: frees unused data
 364  *****************************************************************************/
 365 static void DVDEnd( input_thread_t * p_input )
 366 {
 367     thread_dvd_data_t *     p_dvd;
 368     dvd_netlist_t *         p_netlist;
 369
 370     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 371     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 372
 373     IfoDestroy( p_dvd->p_ifo );
 374
 375     free( p_dvd );
 376
 377     DVDNetlistEnd( p_netlist );
 378 }
 379
 380 /*****************************************************************************
 381  * DVDSetArea: initialize input data for title x, chapter y.
 382  * It should be called for each user navigation request.
 383  *****************************************************************************
 384  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 385  * Note that you have to take the lock before entering here.
 386  *****************************************************************************/
 387 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 388 {
 389     thread_dvd_data_t *  p_dvd;
 390     es_descriptor_t *    p_es;
 391     u16                  i_id;
 392     int                  i_vts_title;
 393     int                  i_audio;
 394     int                  i_spu;
 395     int                  i;
 396
 397     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 398
 399     /* we can't use the interface slider until initilization is complete */
 400     p_input->stream.b_seekable = 0;
 401
 402     if( p_area != p_input->stream.p_selected_area )
 403     {
 404
 405         /*
 406          *  We have to load all title information
 407          */
 408         /* Change the default area */
 409         p_input->stream.p_selected_area =
 410                     p_input->stream.pp_areas[p_area->i_id];
 411
 412         /* title number: it is not vts nb!,
 413          * it is what appears in the interface list */
 414         p_dvd->i_title = p_area->i_id;
 415         p_dvd->p_ifo->i_title = p_dvd->i_title;
 416
 417         /* set number of chapters of current title */
 418         p_dvd->i_chapter_nb = p_area->i_part_nb;
 419
 420         /* ifo vts */
 421         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 422         {
 423             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 424             free( p_dvd );
 425             p_input->b_error = 1;
 426             return -1;
 427         }
 428
 429 #define vmg p_dvd->p_ifo->vmg
 430 #define vts p_dvd->p_ifo->vts
 431         /* title position inside the selected vts */
 432         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 433         p_dvd->i_title_id =
 434             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 435
 436         intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
 437                          p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
 438
 439         /*
 440          * CSS cracking has to be done again
 441          */
 442         dvdcss_crack( p_dvd->dvdhandle,
 443                       vts.i_pos + vts.manager_inf.i_title_vob_start_sector );
 444
 445         /*
 446          * Angle management
 447          */
 448         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 449         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 450         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 451         {
 452             p_dvd->i_angle = 1;
 453         }
 454
 455         /*
 456          * Set selected title start and size
 457          */
 458
 459         /* title set offset XXX: convert to block values */
 460         p_dvd->i_title_start =
 461             vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
 462
 463         /* last video cell */
 464         p_dvd->i_cell = 0;
 465         p_dvd->i_prg_cell = -1 +
 466             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 467
 468         if( DVDFindCell( p_dvd ) < 0 )
 469         {
 470             intf_ErrMsg( "dvd error: can't find title end" );
 471             p_input->b_error = 1;
 472             return -1;
 473         }
 474
 475         /* temporary hack to fix size in some dvds */
 476         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 477         {
 478             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 479         }
 480
 481         p_dvd->i_sector = 0;
 482         p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
 483
 484         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 485         {
 486             intf_ErrMsg( "dvd error: can't find first chapter" );
 487             p_input->b_error = 1;
 488             return -1;
 489         }
 490
 491         p_dvd->i_size -= p_dvd->i_sector + 1;
 492
 493         IfoPrintTitle( p_dvd );
 494
 495         /* Area definition */
 496         p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
 497         p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
 498         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 499         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 500
 501         /* start at the beginning of the title */
 502         /* FIXME: create a conf option to select whether to restart
 503          * title or not */
 504         p_input->stream.p_selected_area->i_tell = 0;
 505         p_input->stream.p_selected_area->i_part = 1;
 506
 507         /*
 508          * Destroy obsolete ES by reinitializing program 0
 509          * and find all ES in title with ifo data
 510          */
 511         if( p_input->stream.pp_programs != NULL )
 512         {
 513             /* We don't use input_EndStream here since
 514              * we keep area structures */
 515
 516             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 517             {
 518                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 519             }
 520
 521             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 522
 523             p_input->stream.pp_selected_es = NULL;
 524             p_input->stream.i_selected_es_number = 0;
 525         }
 526
 527         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 528
 529         /* No PSM to read in DVD mode, we already have all information */
 530         p_input->stream.pp_programs[0]->b_is_ok = 1;
 531
 532         p_es = NULL;
 533
 534         /* ES 0 -> video MPEG2 */
 535         IfoPrintVideo( p_dvd );
 536
 537         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 538         p_es->i_stream_id = 0xe0;
 539         p_es->i_type = MPEG2_VIDEO_ES;
 540         p_es->i_cat = VIDEO_ES;
 541         if( p_main->b_video )
 542         {
 543             input_SelectES( p_input, p_es );
 544         }
 545
 546 #define audio_status \
 547     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 548         /* Audio ES, in the order they appear in .ifo */
 549         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 550         {
 551             IfoPrintAudio( p_dvd, i );
 552
 553             /* audio channel is active if first byte is 0x80 */
 554             if( audio_status.i_available )
 555             {
 556                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 557                 {
 558                 case 0x00:              /* AC3 */
 559                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 560                     p_es = input_AddES( p_input,
 561                                p_input->stream.pp_programs[0], i_id, 0 );
 562                     p_es->i_stream_id = 0xbd;
 563                     p_es->i_type = AC3_AUDIO_ES;
 564                     p_es->b_audio = 1;
 565                     p_es->i_cat = AUDIO_ES;
 566                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 567                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 568                     strcat( p_es->psz_desc, " (ac3)" );
 569
 570                     break;
 571                 case 0x02:
 572                 case 0x03:              /* MPEG audio */
 573                     i_id = 0xc0 + audio_status.i_position;
 574                     p_es = input_AddES( p_input,
 575                                     p_input->stream.pp_programs[0], i_id, 0 );
 576                     p_es->i_stream_id = i_id;
 577                     p_es->i_type = MPEG2_AUDIO_ES;
 578                     p_es->b_audio = 1;
 579                     p_es->i_cat = AUDIO_ES;
 580                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 581                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 582                     strcat( p_es->psz_desc, " (mpeg)" );
 583
 584                     break;
 585                 case 0x04:              /* LPCM */
 586
 587                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 588                     p_es = input_AddES( p_input,
 589                                     p_input->stream.pp_programs[0], i_id, 0 );
 590                     p_es->i_stream_id = i_id;
 591                     p_es->i_type = LPCM_AUDIO_ES;
 592                     p_es->b_audio = 1;
 593                     p_es->i_cat = AUDIO_ES;
 594                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 595                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 596                     strcat( p_es->psz_desc, " (lpcm)" );
 597
 598                     break;
 599                 case 0x06:              /* DTS */
 600                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 601                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 602                                  "(0x%x)", i_id );
 603                     break;
 604                 default:
 605                     i_id = 0;
 606                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 607                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 608                 }
 609             }
 610         }
 611 #undef audio_status
 612 #define spu_status \
 613     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 614
 615         /* Sub Picture ES */
 616
 617         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 618         {
 619             IfoPrintSpu( p_dvd, i );
 620
 621             if( spu_status.i_available )
 622             {
 623                 /*  there are several streams for one spu */
 624                 if(  vts.manager_inf.video_attr.i_ratio )
 625                 {
 626                     /* 16:9 */
 627                     switch( vts.manager_inf.video_attr.i_perm_displ )
 628                     {
 629                     case 1:
 630                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 631                                | 0xbd;
 632                         break;
 633                     case 2:
 634                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 635                                | 0xbd;
 636                         break;
 637                     default:
 638                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 639                                | 0xbd;
 640                         break;
 641                     }
 642                 }
 643                 else
 644                 {
 645                     /* 4:3 */
 646                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 647                            | 0xbd;
 648                 }
 649                 p_es = input_AddES( p_input,
 650                                     p_input->stream.pp_programs[0], i_id, 0 );
 651                 p_es->i_stream_id = 0xbd;
 652                 p_es->i_type = DVD_SPU_ES;
 653                 p_es->i_cat = SPU_ES;
 654                 strcpy( p_es->psz_desc, IfoLanguage( hton16(
 655                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 656             }
 657         }
 658 #undef spu_status
 659         if( p_main->b_audio )
 660         {
 661             /* For audio: first one if none or a not existing one specified */
 662             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 663             if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 664             {
 665                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 666                 i_audio = 1;
 667             }
 668             if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
 669             {
 670                 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 671             }
 672         }
 673
 674         if( p_main->b_video )
 675         {
 676             /* for spu, default is none */
 677             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 678             if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 679             {
 680                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 681                 i_spu = 0;
 682             }
 683             if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
 684             {
 685                 i_spu += vts.manager_inf.i_audio_nb;
 686                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 687             }
 688         }
 689     } /* i_title >= 0 */
 690     else
 691     {
 692         p_area = p_input->stream.p_selected_area;
 693     }
 694 #undef vts
 695 #undef vmg
 696
 697     /*
 698      * Chapter selection
 699      */
 700
 701     if( p_area->i_part != p_dvd->i_chapter )
 702     {
 703         if( ( p_area->i_part > 0 ) &&
 704             ( p_area->i_part <= p_area->i_part_nb ))
 705         {
 706             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 707             {
 708                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 709                 p_input->b_error = 1;
 710                 return -1;
 711             }
 712
 713             p_input->stream.p_selected_area->i_tell =
 714                                    LB2OFF( p_dvd->i_start ) - p_area->i_start;
 715             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 716
 717             intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
 718                                         p_area->i_part, p_area->i_tell );
 719         }
 720         else
 721         {
 722             p_area->i_part = 1;
 723             p_dvd->i_chapter = 1;
 724         }
 725     }
 726
 727 #define title \
 728     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 729     if( p_area->i_angle != p_dvd->i_angle )
 730     {
 731         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 732         {
 733             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 734             {
 735                 p_dvd->i_cell = 0;
 736             }
 737             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 738             p_dvd->i_angle = p_area->i_angle;
 739
 740             DVDFindSector( p_dvd );
 741             p_dvd->i_cell += p_dvd->i_angle_cell;
 742         }
 743         else
 744         {
 745             p_dvd->i_angle = p_area->i_angle;
 746         }
 747
 748         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 749     }
 750
 751     /* warn interface that something has changed */
 752     p_input->stream.b_seekable = 1;
 753     p_input->stream.b_changed = 1;
 754
 755     return 0;
 756 }
 757
 758
 759 /*****************************************************************************
 760  * DVDRead: reads data packets into the netlist.
 761  *****************************************************************************
 762  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 763  * EOF.
 764  *****************************************************************************/
 765 static int DVDRead( input_thread_t * p_input,
 766                     data_packet_t ** pp_packets )
 767 {
 768     thread_dvd_data_t *     p_dvd;
 769     dvd_netlist_t *         p_netlist;
 770     struct iovec *          p_vec;
 771     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 772     u8 *                    pi_cur;
 773     int                     i_block_once;
 774     int                     i_packet_size;
 775     int                     i_iovec;
 776     int                     i_packet;
 777     int                     i_pos;
 778     int                     i_read_blocks;
 779     int                     i_sector;
 780     boolean_t               b_eof;
 781     boolean_t               b_eot;
 782     boolean_t               b_eoc;
 783
 784     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 785     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 786
 787     b_eoc = 0;
 788     i_sector = p_dvd->i_title_start + p_dvd->i_sector;
 789     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 790
 791     /* Get the position of the next cell if we're at cell end */
 792     if( i_block_once <= 0 )
 793     {
 794         int     i_angle;
 795
 796         p_dvd->i_cell++;
 797         p_dvd->i_angle_cell++;
 798
 799         /* Find cell index in adress map */
 800         if( DVDFindSector( p_dvd ) < 0 )
 801         {
 802             pp_packets[0] = NULL;
 803             intf_ErrMsg( "dvd error: can't find next cell" );
 804             return 1;
 805         }
 806
 807         /* Position the fd pointer on the right address */
 808         i_sector = dvdcss_seek( p_dvd->dvdhandle,
 809                                 p_dvd->i_title_start + p_dvd->i_sector );
 810
 811         /* update chapter : it will be easier when we have navigation
 812          * ES support */
 813         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 814         {
 815             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 816             {
 817                 i_angle = p_dvd->i_angle - 1;
 818             }
 819             else
 820             {
 821                 i_angle = 0;
 822             }
 823             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 824                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 825             {
 826                 p_dvd->i_chapter++;
 827                 b_eoc = 1;
 828             }
 829         }
 830
 831         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 832     }
 833
 834     /* The number of blocks read is the max between the requested
 835      * value and the leaving block in the cell */
 836     if( i_block_once > p_dvd->i_block_once )
 837     {
 838         i_block_once = p_dvd->i_block_once;
 839     }
 840 /*
 841 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 842 */
 843     p_netlist->i_read_once = i_block_once;
 844
 845     /* Get an iovec pointer */
 846     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 847     {
 848         intf_ErrMsg( "dvd error: can't get iovec" );
 849         return -1;
 850     }
 851
 852     /* Reads from DVD */
 853     i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
 854                                   i_block_once, DVDCSS_READ_DECRYPT );
 855
 856     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 857      * need know the real number of blocks read */
 858     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 859
 860     /* Update global position */
 861     p_dvd->i_sector += i_read_blocks;
 862
 863     i_packet = 0;
 864
 865     /* Read headers to compute payload length */
 866     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 867     {
 868         i_pos = 0;
 869
 870         while( i_pos < p_netlist->i_buffer_size )
 871         {
 872             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 873
 874             /*default header */
 875             if( U32_AT( pi_cur ) != 0x1BA )
 876             {
 877                 /* That's the case for all packets, except pack header. */
 878                 i_packet_size = U16_AT( pi_cur + 4 );
 879                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 880             }
 881             else
 882             {
 883                 /* MPEG-2 Pack header. */
 884                 i_packet_size = 8;
 885                 pp_packets[i_packet] = pp_data[i_iovec];
 886
 887             }
 888
 889             (*pp_data[i_iovec]->pi_refcount)++;
 890
 891             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 892
 893             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 894
 895             pp_packets[i_packet]->p_payload_start =
 896                     pp_packets[i_packet]->p_buffer + i_pos;
 897
 898             pp_packets[i_packet]->p_payload_end =
 899                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 900
 901             pp_packets[i_packet]->p_next = NULL;
 902             pp_packets[i_packet]->b_discard_payload = 0;
 903
 904             i_packet++;
 905             i_pos += i_packet_size + 6;
 906         }
 907     }
 908
 909     pp_packets[i_packet] = NULL;
 910
 911     vlc_mutex_lock( &p_input->stream.stream_lock );
 912
 913     p_input->stream.p_selected_area->i_tell =
 914         LB2OFF( i_sector + i_read_blocks ) -
 915         p_input->stream.p_selected_area->i_start;
 916     if( b_eoc )
 917     {
 918         /* We modify i_part only at end of chapter not to erase
 919          * some modification from the interface */
 920         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 921     }
 922
 923     b_eot = !( p_input->stream.p_selected_area->i_tell
 924                   < p_input->stream.p_selected_area->i_size );
 925     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 926
 927     if( b_eof )
 928     {
 929         vlc_mutex_unlock( &p_input->stream.stream_lock );
 930         return 1;
 931     }
 932
 933     if( b_eot )
 934     {
 935         intf_WarnMsg( 4, "dvd info: new title" );
 936         p_dvd->i_title++;
 937         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 938         vlc_mutex_unlock( &p_input->stream.stream_lock );
 939         return 0;
 940     }
 941
 942     vlc_mutex_unlock( &p_input->stream.stream_lock );
 943
 944     if( i_read_blocks == i_block_once )
 945     {
 946         return 0;
 947     }
 948
 949     return -1;
 950 }
 951
 952 /*****************************************************************************
 953  * DVDRewind : reads a stream backward
 954  *****************************************************************************/
 955 static int DVDRewind( input_thread_t * p_input )
 956 {
 957     return( -1 );
 958 }
 959
 960 /*****************************************************************************
 961  * DVDSeek : Goes to a given position on the stream.
 962  *****************************************************************************
 963  * This one is used by the input and translate chronological position from
 964  * input to logical position on the device.
 965  * The lock should be taken before calling this function.
 966  *****************************************************************************/
 967 static void DVDSeek( input_thread_t * p_input, off_t i_off )
 968 {
 969     thread_dvd_data_t *     p_dvd;
 970     int                     i_prg_cell;
 971     int                     i_cell;
 972     int                     i_chapter;
 973     int                     i_angle;
 974
 975     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 976
 977     /* we have to take care of offset of beginning of title */
 978     p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
 979                        - p_dvd->i_title_start;
 980
 981     i_prg_cell = 0;
 982     i_chapter = 0;
 983
 984     /* parse vobu address map to find program cell */
 985     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
 986     {
 987         i_prg_cell++;
 988     }
 989
 990     p_dvd->i_prg_cell = i_prg_cell;
 991
 992     if( DVDChooseAngle( p_dvd ) < 0 )
 993     {
 994         p_input->b_error = 1;
 995         return;
 996     }
 997
 998     p_dvd->i_cell = 0;
 999
1000     /* Find first title cell which is inside program cell */
1001     if( DVDFindCell( p_dvd ) < 0 )
1002     {
1003         /* no following cell : we're at eof */
1004         intf_ErrMsg( "dvd error: cell seeking failed" );
1005         p_input->b_error = 1;
1006         return;
1007     }
1008
1009     i_cell = p_dvd->i_cell;
1010
1011 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1012     /* parse cell address map to find title cell containing sector */
1013     while( cell.i_end_sector < p_dvd->i_sector )
1014     {
1015         i_cell++;
1016     }
1017
1018     p_dvd->i_cell = i_cell;
1019
1020     /* if we're inside a multi-angle zone, we have to choose i_sector
1021      * in the current angle ; we can't do it all the time since cells
1022      * can be very wide out of such zones */
1023     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1024     {
1025         p_dvd->i_sector = MAX(
1026                 cell.i_start_sector,
1027                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1028     }
1029
1030     p_dvd->i_end_sector = MIN(
1031             cell.i_end_sector,
1032             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1033 #undef cell
1034     /* update chapter */
1035     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1036     {
1037         i_angle = p_dvd->i_angle - 1;
1038     }
1039     else
1040     {
1041         i_angle = 0;
1042     }
1043     if( p_dvd->i_chapter_nb > 1 )
1044     {
1045         while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1046                     ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1047                ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1048         {
1049             i_chapter++;
1050         }
1051     }
1052     else
1053     {
1054         i_chapter = 1;
1055     }
1056
1057     p_dvd->i_chapter = i_chapter;
1058     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1059
1060     p_input->stream.p_selected_area->i_tell =
1061         LB2OFF ( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_title_start
1062                                                  + p_dvd->i_sector ) )
1063          - p_input->stream.p_selected_area->i_start;
1064
1065     intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1066                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1067
1068
1069     return;
1070 }
1071
1072 #define cell  p_dvd->p_ifo->vts.cell_inf
1073
1074 /*****************************************************************************
1075  * DVDFindCell: adjust the title cell index with the program cell
1076  *****************************************************************************/
1077 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1078 {
1079     int                 i_cell;
1080     int                 i_index;
1081
1082     i_cell = p_dvd->i_cell;
1083     i_index = p_dvd->i_prg_cell;
1084
1085     if( i_cell >= cell.i_cell_nb )
1086     {
1087         return -1;
1088     }
1089
1090     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1091                    cell.p_cell_map[i_cell].i_vob_id ) ||
1092       ( title.p_cell_pos[i_index].i_cell_id !=
1093                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1094            ( i_cell < cell.i_cell_nb - 1 ) )
1095     {
1096         i_cell++;
1097     }
1098
1099 /*
1100 intf_WarnMsg( 7, "FindCell: i_cell %d i_index %d found %d nb %d",
1101                     p_dvd->i_cell,
1102                     p_dvd->i_prg_cell,
1103                     i_cell,
1104                     cell.i_cell_nb );
1105 */
1106
1107     p_dvd->i_cell = i_cell;
1108
1109     return 0;
1110 }
1111
1112 #undef cell
1113
1114 /*****************************************************************************
1115  * DVDFindSector: find cell index in adress map from index in
1116  * information table program map and give corresponding sectors.
1117  *****************************************************************************/
1118 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1119 {
1120
1121     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1122     {
1123         p_dvd->i_prg_cell++;
1124
1125         if( DVDChooseAngle( p_dvd ) < 0 )
1126         {
1127             return -1;
1128         }
1129     }
1130
1131     if( DVDFindCell( p_dvd ) < 0 )
1132     {
1133         intf_ErrMsg( "dvd error: can't find sector" );
1134         return -1;
1135     }
1136
1137     /* Find start and end sectors of new cell */
1138 #if 1
1139     p_dvd->i_sector = MAX(
1140          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1141          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1142     p_dvd->i_end_sector = MIN(
1143          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1144          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1145 #else
1146     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1147     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1148 #endif
1149
1150 /*
1151     intf_WarnMsg( 7, "cell: %d sector1: 0x%x end1: 0x%x\n"
1152                    "index: %d sector2: 0x%x end2: 0x%x\n"
1153                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1154         p_dvd->i_cell,
1155         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1156         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1157         p_dvd->i_prg_cell,
1158         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1159         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1160         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1161         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1162         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1163 */
1164
1165     return 0;
1166 }
1167
1168 /*****************************************************************************
1169  * DVDChapterSelect: find the cell corresponding to requested chapter
1170  *****************************************************************************/
1171 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1172 {
1173
1174     /* Find cell index in Program chain for current chapter */
1175     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1176     p_dvd->i_cell = 0;
1177     p_dvd->i_sector = 0;
1178
1179     DVDChooseAngle( p_dvd );
1180
1181     /* Search for cell_index in cell adress_table and initialize
1182      * start sector */
1183     if( DVDFindSector( p_dvd ) < 0 )
1184     {
1185         intf_ErrMsg( "dvd error: can't select chapter" );
1186         return -1;
1187     }
1188
1189     /* start is : beginning of vts vobs + offset to vob x */
1190     p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1191
1192     /* Position the fd pointer on the right address */
1193     p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start );
1194
1195     p_dvd->i_chapter = i_chapter;
1196     return 0;
1197 }
1198
1199 /*****************************************************************************
1200  * DVDChooseAngle: select the cell corresponding to the selected angle
1201  *****************************************************************************/
1202 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1203 {
1204     /* basic handling of angles */
1205     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1206                     >> 12 ) )
1207     {
1208         /* we enter a muli-angle section */
1209         case 0x5:
1210             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1211             p_dvd->i_angle_cell = 0;
1212             break;
1213         /* we exit a multi-angle section */
1214         case 0x9:
1215         case 0xd:
1216             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1217             break;
1218     }
1219
1220     return 0;
1221 }
1222
1223 #undef title