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 1.82 2001/07/30 00:53:05 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 #define MODULE_NAME dvd
  33 #include "modules_inner.h"
  34
  35 /*****************************************************************************
  36  * Preamble
  37  *****************************************************************************/
  38 #include "defs.h"
  39
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42
  43 #ifdef HAVE_UNISTD_H
  44 #   include <unistd.h>
  45 #endif
  46
  47 #include <fcntl.h>
  48 #include <sys/types.h>
  49 #include <string.h>
  50 #include <errno.h>
  51
  52 #ifdef STRNCASECMP_IN_STRINGS_H
  53 #   include <strings.h>
  54 #endif
  55
  56 #if defined( WIN32 )
  57 #   include <io.h>                                                 /* read() */
  58 #else
  59 #   include <sys/uio.h>                                      /* struct iovec */
  60 #endif
  61
  62 #include <videolan/dvdcss.h>
  63
  64 #include "config.h"
  65 #include "common.h"
  66 #include "threads.h"
  67 #include "mtime.h"
  68 #include "tests.h"
  69
  70 #if defined( WIN32 )
  71 #   include "input_iovec.h"
  72 #endif
  73
  74 #include "intf_msg.h"
  75
  76 #include "main.h"
  77
  78 #include "stream_control.h"
  79 #include "input_ext-intf.h"
  80 #include "input_ext-dec.h"
  81 #include "input_ext-plugins.h"
  82
  83 #include "input_dvd.h"
  84 #include "dvd_netlist.h"
  85 #include "dvd_ifo.h"
  86 #include "dvd_summary.h"
  87
  88 #include "debug.h"
  89
  90 #include "modules.h"
  91 #include "modules_export.h"
  92
  93 /* how many blocks DVDRead will read in each loop */
  94 #define DVD_BLOCK_READ_ONCE 64
  95 #define DVD_DATA_READ_ONCE  (4 * DVD_BLOCK_READ_ONCE)
  96
  97 /* Size of netlist */
  98 #define DVD_NETLIST_SIZE    256
  99
 100 /*****************************************************************************
 101  * Local prototypes
 102  *****************************************************************************/
 103 /* called from outside */
 104 static int  DVDProbe    ( probedata_t *p_data );
 105 static void DVDInit     ( struct input_thread_s * );
 106 static void DVDEnd      ( struct input_thread_s * );
 107 static void DVDOpen     ( struct input_thread_s * );
 108 static void DVDClose    ( struct input_thread_s * );
 109 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
 110 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
 111 static void DVDSeek     ( struct input_thread_s *, off_t );
 112 static int  DVDRewind   ( struct input_thread_s * );
 113
 114 /* called only inside */
 115 static int  DVDChooseAngle( thread_dvd_data_t * );
 116 static int  DVDFindCell( thread_dvd_data_t * );
 117 static int  DVDFindSector( thread_dvd_data_t * );
 118 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 119
 120 /*****************************************************************************
 121  * Functions exported as capabilities. They are declared as static so that
 122  * we don't pollute the namespace too much.
 123  *****************************************************************************/
 124 void _M( input_getfunctions )( function_list_t * p_function_list )
 125 {
 126 #define input p_function_list->functions.input
 127     p_function_list->pf_probe = DVDProbe;
 128     input.pf_init             = DVDInit;
 129     input.pf_open             = DVDOpen;
 130     input.pf_close            = DVDClose;
 131     input.pf_end              = DVDEnd;
 132     input.pf_init_bit_stream  = InitBitstream;
 133     input.pf_read             = DVDRead;
 134     input.pf_set_area         = DVDSetArea;
 135     input.pf_demux            = input_DemuxPS;
 136     input.pf_new_packet       = DVDNewPacket;
 137     input.pf_new_pes          = DVDNewPES;
 138     input.pf_delete_packet    = DVDDeletePacket;
 139     input.pf_delete_pes       = DVDDeletePES;
 140     input.pf_rewind           = DVDRewind;
 141     input.pf_seek             = DVDSeek;
 142 #undef input
 143 }
 144
 145 /*
 146  * Data reading functions
 147  */
 148
 149 /*****************************************************************************
 150  * DVDProbe: verifies that the stream is a PS stream
 151  *****************************************************************************/
 152 static int DVDProbe( probedata_t *p_data )
 153 {
 154     input_thread_t * p_input = (input_thread_t *)p_data;
 155
 156     char * psz_name = p_input->p_source;
 157     int i_score = 5;
 158
 159     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 160     {
 161         return( 999 );
 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         i_score = 100;
 168         psz_name += 4;
 169     }
 170
 171     return( i_score );
 172 }
 173
 174 /*****************************************************************************
 175  * DVDInit: initializes DVD structures
 176  *****************************************************************************/
 177 static void DVDInit( input_thread_t * p_input )
 178 {
 179     thread_dvd_data_t *  p_dvd;
 180     input_area_t *       p_area;
 181     int                  i_title;
 182     int                  i_chapter;
 183     int                  i;
 184
 185     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 186     if( p_dvd == NULL )
 187     {
 188         intf_ErrMsg( "dvd error: out of memory" );
 189         p_input->b_error = 1;
 190         return;
 191     }
 192
 193     p_input->p_plugin_data = (void *)p_dvd;
 194     p_input->p_method_data = NULL;
 195
 196     p_dvd->dvdhandle = (dvdcss_handle) p_input->i_handle;
 197
 198     dvdcss_seek( p_dvd->dvdhandle, 0 );
 199
 200     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 201      * DVD_DATA_READ_ONCE at most */
 202     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 203     /* this value mustn't be modifed */
 204     p_input->i_read_once = DVD_DATA_READ_ONCE;
 205
 206     /* Reading structures initialisation */
 207     p_input->p_method_data =
 208         DVDNetlistInit( DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
 209                         DVD_NETLIST_SIZE, DVD_LB_SIZE, p_dvd->i_block_once );
 210     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 211
 212     /* Ifo allocation & initialisation */
 213     if( IfoCreate( p_dvd ) < 0 )
 214     {
 215         intf_ErrMsg( "dvd error: allcation error in ifo" );
 216         dvdcss_close( p_dvd->dvdhandle );
 217         free( p_dvd );
 218         p_input->b_error = 1;
 219         return;
 220     }
 221
 222     if( IfoInit( p_dvd->p_ifo ) < 0 )
 223     {
 224         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 225         IfoDestroy( p_dvd->p_ifo );
 226         dvdcss_close( p_dvd->dvdhandle );
 227         free( p_dvd );
 228         p_input->b_error = 1;
 229         return;
 230     }
 231
 232     /* Set stream and area data */
 233     vlc_mutex_lock( &p_input->stream.stream_lock );
 234
 235     /* Initialize ES structures */
 236     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 237
 238     /* disc input method */
 239     p_input->stream.i_method = INPUT_METHOD_DVD;
 240
 241 #define title_inf p_dvd->p_ifo->vmg.title_inf
 242     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 243
 244 #define area p_input->stream.pp_areas
 245     /* We start from 1 here since the default area 0
 246      * is reserved for video_ts.vob */
 247     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 248     {
 249         input_AddArea( p_input );
 250
 251         /* Titles are Program Chains */
 252         area[i]->i_id = i;
 253
 254         /* Absolute start offset and size
 255          * We can only set that with vts ifo, so we do it during the
 256          * first call to DVDSetArea */
 257         area[i]->i_start = 0;
 258         area[i]->i_size = 0;
 259
 260         /* Number of chapters */
 261         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 262         area[i]->i_part = 1;
 263
 264         /* Number of angles */
 265         area[i]->i_angle_nb = 0;
 266         area[i]->i_angle = 1;
 267
 268         /* Offset to vts_i_0.ifo */
 269         area[i]->i_plugin_data = p_dvd->p_ifo->i_start +
 270                        title_inf.p_attr[i-1].i_start_sector;
 271     }
 272 #undef area
 273
 274     /* Get requested title - if none try the first title */
 275     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 276     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 277     {
 278         i_title = 1;
 279     }
 280
 281 #undef title_inf
 282
 283     /* Get requested chapter - if none defaults to first one */
 284     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 285     if( i_chapter <= 0 )
 286     {
 287         i_chapter = 1;
 288     }
 289
 290     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 291
 292     p_area = p_input->stream.pp_areas[i_title];
 293
 294     /* set title, chapter, audio and subpic */
 295     DVDSetArea( p_input, p_area );
 296
 297     vlc_mutex_unlock( &p_input->stream.stream_lock );
 298
 299     return;
 300 }
 301
 302 /*****************************************************************************
 303  * DVDOpen: open dvd
 304  *****************************************************************************/
 305 static void DVDOpen( struct input_thread_s *p_input )
 306 {
 307     dvdcss_handle dvdhandle;
 308
 309     vlc_mutex_lock( &p_input->stream.stream_lock );
 310
 311     /* If we are here we can control the pace... */
 312     p_input->stream.b_pace_control = 1;
 313
 314     p_input->stream.b_seekable = 1;
 315     p_input->stream.p_selected_area->i_size = 0;
 316
 317     p_input->stream.p_selected_area->i_tell = 0;
 318
 319     vlc_mutex_unlock( &p_input->stream.stream_lock );
 320
 321     /* XXX: put this shit in an access plugin */
 322     if( strlen( p_input->p_source ) > 4
 323          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 324     {
 325         dvdhandle = dvdcss_open( p_input->p_source + 4, DVDCSS_INIT_QUIET );
 326     }
 327     else
 328     {
 329         dvdhandle = dvdcss_open( p_input->p_source, DVDCSS_INIT_QUIET );
 330     }
 331
 332     if( dvdhandle == NULL )
 333     {
 334         p_input->b_error = 1;
 335         return;
 336     }
 337
 338     p_input->i_handle = (int) dvdhandle;
 339 }
 340
 341 /*****************************************************************************
 342  * DVDClose: close dvd
 343  *****************************************************************************/
 344 static void DVDClose( struct input_thread_s *p_input )
 345 {
 346     /* Clean up libdvdcss */
 347     dvdcss_close( (dvdcss_handle) p_input->i_handle );
 348 }
 349
 350 /*****************************************************************************
 351  * DVDEnd: frees unused data
 352  *****************************************************************************/
 353 static void DVDEnd( input_thread_t * p_input )
 354 {
 355     thread_dvd_data_t *     p_dvd;
 356     dvd_netlist_t *         p_netlist;
 357
 358     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 359     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 360
 361     IfoDestroy( p_dvd->p_ifo );
 362
 363     free( p_dvd );
 364
 365     DVDNetlistEnd( p_netlist );
 366 }
 367
 368 /*****************************************************************************
 369  * DVDSetArea: initialize input data for title x, chapter y.
 370  * It should be called for each user navigation request.
 371  *****************************************************************************
 372  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 373  * Note that you have to take the lock before entering here.
 374  *****************************************************************************/
 375 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 376 {
 377     thread_dvd_data_t *  p_dvd;
 378     es_descriptor_t *    p_es;
 379     u16                  i_id;
 380     int                  i_vts_title;
 381     int                  i_audio;
 382     int                  i_spu;
 383     int                  i;
 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         /* title number: it is not vts nb!,
 401          * it is what appears in the interface list */
 402         p_dvd->i_title = p_area->i_id;
 403         p_dvd->p_ifo->i_title = p_dvd->i_title;
 404
 405         /* set number of chapters of current title */
 406         p_dvd->i_chapter_nb = p_area->i_part_nb;
 407
 408         /* ifo vts */
 409         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 410         {
 411             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 412             free( p_dvd );
 413             p_input->b_error = 1;
 414             return -1;
 415         }
 416
 417 #define vmg p_dvd->p_ifo->vmg
 418 #define vts p_dvd->p_ifo->vts
 419         /* title position inside the selected vts */
 420         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 421         p_dvd->i_title_id =
 422             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 423
 424         intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
 425                          p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
 426
 427         /*
 428          * Tell libdvdcss we changed title
 429          */
 430         dvdcss_title( p_dvd->dvdhandle,
 431                       vts.i_pos + vts.manager_inf.i_title_vob_start_sector );
 432
 433         /*
 434          * Angle management
 435          */
 436         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 437         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 438         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 439         {
 440             p_dvd->i_angle = 1;
 441         }
 442
 443         /*
 444          * Set selected title start and size
 445          */
 446
 447         /* title set offset XXX: convert to block values */
 448         p_dvd->i_title_start =
 449             vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
 450
 451         /* last video cell */
 452         p_dvd->i_cell = 0;
 453         p_dvd->i_prg_cell = -1 +
 454             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 455
 456         if( DVDFindCell( p_dvd ) < 0 )
 457         {
 458             intf_ErrMsg( "dvd error: can't find title end" );
 459             p_input->b_error = 1;
 460             return -1;
 461         }
 462
 463         /* temporary hack to fix size in some dvds */
 464         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 465         {
 466             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 467         }
 468
 469         p_dvd->i_sector = 0;
 470         p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
 471
 472         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 473         {
 474             intf_ErrMsg( "dvd error: can't find first chapter" );
 475             p_input->b_error = 1;
 476             return -1;
 477         }
 478
 479         p_dvd->i_size -= p_dvd->i_sector + 1;
 480
 481         IfoPrintTitle( p_dvd );
 482
 483         /* Area definition */
 484         p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
 485         p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
 486         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 487         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 488
 489         /* start at the beginning of the title */
 490         /* FIXME: create a conf option to select whether to restart
 491          * title or not */
 492         p_input->stream.p_selected_area->i_tell = 0;
 493         p_input->stream.p_selected_area->i_part = 1;
 494
 495         /*
 496          * Destroy obsolete ES by reinitializing program 0
 497          * and find all ES in title with ifo data
 498          */
 499         if( p_input->stream.pp_programs != NULL )
 500         {
 501             /* We don't use input_EndStream here since
 502              * we keep area structures */
 503
 504             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 505             {
 506                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 507             }
 508
 509             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 510
 511             p_input->stream.pp_selected_es = NULL;
 512             p_input->stream.i_selected_es_number = 0;
 513         }
 514
 515         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 516
 517         /* No PSM to read in DVD mode, we already have all information */
 518         p_input->stream.pp_programs[0]->b_is_ok = 1;
 519
 520         p_es = NULL;
 521
 522         /* ES 0 -> video MPEG2 */
 523         IfoPrintVideo( p_dvd );
 524
 525         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 526         p_es->i_stream_id = 0xe0;
 527         p_es->i_type = MPEG2_VIDEO_ES;
 528         p_es->i_cat = VIDEO_ES;
 529         if( p_main->b_video )
 530         {
 531             input_SelectES( p_input, p_es );
 532         }
 533
 534 #define audio_status \
 535     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 536         /* Audio ES, in the order they appear in .ifo */
 537         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 538         {
 539             IfoPrintAudio( p_dvd, i );
 540
 541             /* audio channel is active if first byte is 0x80 */
 542             if( audio_status.i_available )
 543             {
 544                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 545                 {
 546                 case 0x00:              /* AC3 */
 547                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 548                     p_es = input_AddES( p_input,
 549                                p_input->stream.pp_programs[0], i_id, 0 );
 550                     p_es->i_stream_id = 0xbd;
 551                     p_es->i_type = AC3_AUDIO_ES;
 552                     p_es->b_audio = 1;
 553                     p_es->i_cat = AUDIO_ES;
 554                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 555                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 556                     strcat( p_es->psz_desc, " (ac3)" );
 557
 558                     break;
 559                 case 0x02:
 560                 case 0x03:              /* MPEG audio */
 561                     i_id = 0xc0 + audio_status.i_position;
 562                     p_es = input_AddES( p_input,
 563                                     p_input->stream.pp_programs[0], i_id, 0 );
 564                     p_es->i_stream_id = i_id;
 565                     p_es->i_type = MPEG2_AUDIO_ES;
 566                     p_es->b_audio = 1;
 567                     p_es->i_cat = AUDIO_ES;
 568                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 569                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 570                     strcat( p_es->psz_desc, " (mpeg)" );
 571
 572                     break;
 573                 case 0x04:              /* LPCM */
 574
 575                     i_id = ( ( 0xa0 + 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 = i_id;
 579                     p_es->i_type = LPCM_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, " (lpcm)" );
 585
 586                     break;
 587                 case 0x06:              /* DTS */
 588                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 589                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 590                                  "(0x%x)", i_id );
 591                     break;
 592                 default:
 593                     i_id = 0;
 594                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 595                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 596                 }
 597             }
 598         }
 599 #undef audio_status
 600 #define spu_status \
 601     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 602
 603         /* Sub Picture ES */
 604
 605         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 606         {
 607             IfoPrintSpu( p_dvd, i );
 608
 609             if( spu_status.i_available )
 610             {
 611                 /*  there are several streams for one spu */
 612                 if(  vts.manager_inf.video_attr.i_ratio )
 613                 {
 614                     /* 16:9 */
 615                     switch( vts.manager_inf.video_attr.i_perm_displ )
 616                     {
 617                     case 1:
 618                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 619                                | 0xbd;
 620                         break;
 621                     case 2:
 622                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 623                                | 0xbd;
 624                         break;
 625                     default:
 626                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 627                                | 0xbd;
 628                         break;
 629                     }
 630                 }
 631                 else
 632                 {
 633                     /* 4:3 */
 634                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 635                            | 0xbd;
 636                 }
 637                 p_es = input_AddES( p_input,
 638                                     p_input->stream.pp_programs[0], i_id, 0 );
 639                 p_es->i_stream_id = 0xbd;
 640                 p_es->i_type = DVD_SPU_ES;
 641                 p_es->i_cat = SPU_ES;
 642                 strcpy( p_es->psz_desc, IfoLanguage( hton16(
 643                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 644             }
 645         }
 646 #undef spu_status
 647         if( p_main->b_audio )
 648         {
 649             /* For audio: first one if none or a not existing one specified */
 650             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 651             if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 652             {
 653                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 654                 i_audio = 1;
 655             }
 656             if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
 657             {
 658                 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 659             }
 660         }
 661
 662         if( p_main->b_video )
 663         {
 664             /* for spu, default is none */
 665             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 666             if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 667             {
 668                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 669                 i_spu = 0;
 670             }
 671             if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
 672             {
 673                 i_spu += vts.manager_inf.i_audio_nb;
 674                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 675             }
 676         }
 677     } /* i_title >= 0 */
 678     else
 679     {
 680         p_area = p_input->stream.p_selected_area;
 681     }
 682 #undef vts
 683 #undef vmg
 684
 685     /*
 686      * Chapter selection
 687      */
 688
 689     if( p_area->i_part != p_dvd->i_chapter )
 690     {
 691         if( ( p_area->i_part > 0 ) &&
 692             ( p_area->i_part <= p_area->i_part_nb ))
 693         {
 694             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 695             {
 696                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 697                 p_input->b_error = 1;
 698                 return -1;
 699             }
 700
 701             p_input->stream.p_selected_area->i_tell =
 702                                    LB2OFF( p_dvd->i_start ) - p_area->i_start;
 703             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 704
 705             intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
 706                                         p_area->i_part, p_area->i_tell );
 707         }
 708         else
 709         {
 710             p_area->i_part = 1;
 711             p_dvd->i_chapter = 1;
 712         }
 713     }
 714
 715 #define title \
 716     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 717     if( p_area->i_angle != p_dvd->i_angle )
 718     {
 719         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 720         {
 721             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 722             {
 723                 p_dvd->i_cell = 0;
 724             }
 725             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 726             p_dvd->i_angle = p_area->i_angle;
 727
 728             DVDFindSector( p_dvd );
 729             p_dvd->i_cell += p_dvd->i_angle_cell;
 730         }
 731         else
 732         {
 733             p_dvd->i_angle = p_area->i_angle;
 734         }
 735
 736         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 737     }
 738
 739     /* warn interface that something has changed */
 740     p_input->stream.b_seekable = 1;
 741     p_input->stream.b_changed = 1;
 742
 743     return 0;
 744 }
 745
 746
 747 /*****************************************************************************
 748  * DVDRead: reads data packets into the netlist.
 749  *****************************************************************************
 750  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 751  * EOF.
 752  *****************************************************************************/
 753 static int DVDRead( input_thread_t * p_input,
 754                     data_packet_t ** pp_packets )
 755 {
 756     thread_dvd_data_t *     p_dvd;
 757     dvd_netlist_t *         p_netlist;
 758     struct iovec *          p_vec;
 759     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 760     u8 *                    pi_cur;
 761     int                     i_block_once;
 762     int                     i_packet_size;
 763     int                     i_iovec;
 764     int                     i_packet;
 765     int                     i_pos;
 766     int                     i_read_blocks;
 767     int                     i_sector;
 768     boolean_t               b_eof;
 769     boolean_t               b_eot;
 770     boolean_t               b_eoc;
 771
 772     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 773     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 774
 775     b_eoc = 0;
 776     i_sector = p_dvd->i_title_start + p_dvd->i_sector;
 777     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 778
 779     /* Get the position of the next cell if we're at cell end */
 780     if( i_block_once <= 0 )
 781     {
 782         int     i_angle;
 783
 784         p_dvd->i_cell++;
 785         p_dvd->i_angle_cell++;
 786
 787         /* Find cell index in adress map */
 788         if( DVDFindSector( p_dvd ) < 0 )
 789         {
 790             pp_packets[0] = NULL;
 791             intf_ErrMsg( "dvd error: can't find next cell" );
 792             return 1;
 793         }
 794
 795         /* Position the fd pointer on the right address */
 796         i_sector = dvdcss_seek( p_dvd->dvdhandle,
 797                                 p_dvd->i_title_start + p_dvd->i_sector );
 798
 799         /* update chapter : it will be easier when we have navigation
 800          * ES support */
 801         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 802         {
 803             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 804             {
 805                 i_angle = p_dvd->i_angle - 1;
 806             }
 807             else
 808             {
 809                 i_angle = 0;
 810             }
 811             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 812                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 813             {
 814                 p_dvd->i_chapter++;
 815                 b_eoc = 1;
 816             }
 817         }
 818
 819         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 820     }
 821
 822     /* The number of blocks read is the max between the requested
 823      * value and the leaving block in the cell */
 824     if( i_block_once > p_dvd->i_block_once )
 825     {
 826         i_block_once = p_dvd->i_block_once;
 827     }
 828 /*
 829 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 830 */
 831     p_netlist->i_read_once = i_block_once;
 832
 833     /* Get an iovec pointer */
 834     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 835     {
 836         intf_ErrMsg( "dvd error: can't get iovec" );
 837         return -1;
 838     }
 839
 840     /* Reads from DVD */
 841     i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
 842                                   i_block_once, DVDCSS_READ_DECRYPT );
 843
 844     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 845      * need know the real number of blocks read */
 846     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 847
 848     /* Update global position */
 849     p_dvd->i_sector += i_read_blocks;
 850
 851     i_packet = 0;
 852
 853     /* Read headers to compute payload length */
 854     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 855     {
 856         i_pos = 0;
 857
 858         while( i_pos < p_netlist->i_buffer_size )
 859         {
 860             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 861
 862             /*default header */
 863             if( U32_AT( pi_cur ) != 0x1BA )
 864             {
 865                 /* That's the case for all packets, except pack header. */
 866                 i_packet_size = U16_AT( pi_cur + 4 );
 867                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 868             }
 869             else
 870             {
 871                 /* MPEG-2 Pack header. */
 872                 i_packet_size = 8;
 873                 pp_packets[i_packet] = pp_data[i_iovec];
 874
 875             }
 876
 877             (*pp_data[i_iovec]->pi_refcount)++;
 878
 879             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 880
 881             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 882
 883             pp_packets[i_packet]->p_payload_start =
 884                     pp_packets[i_packet]->p_buffer + i_pos;
 885
 886             pp_packets[i_packet]->p_payload_end =
 887                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 888
 889             pp_packets[i_packet]->p_next = NULL;
 890             pp_packets[i_packet]->b_discard_payload = 0;
 891
 892             i_packet++;
 893             i_pos += i_packet_size + 6;
 894         }
 895     }
 896
 897     pp_packets[i_packet] = NULL;
 898
 899     vlc_mutex_lock( &p_input->stream.stream_lock );
 900
 901     p_input->stream.p_selected_area->i_tell =
 902         LB2OFF( i_sector + i_read_blocks ) -
 903         p_input->stream.p_selected_area->i_start;
 904     if( b_eoc )
 905     {
 906         /* We modify i_part only at end of chapter not to erase
 907          * some modification from the interface */
 908         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 909     }
 910
 911     b_eot = !( p_input->stream.p_selected_area->i_tell
 912                   < p_input->stream.p_selected_area->i_size );
 913     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 914
 915     if( b_eof )
 916     {
 917         vlc_mutex_unlock( &p_input->stream.stream_lock );
 918         return 1;
 919     }
 920
 921     if( b_eot )
 922     {
 923         intf_WarnMsg( 4, "dvd info: new title" );
 924         p_dvd->i_title++;
 925         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 926         vlc_mutex_unlock( &p_input->stream.stream_lock );
 927         return 0;
 928     }
 929
 930     vlc_mutex_unlock( &p_input->stream.stream_lock );
 931
 932     if( i_read_blocks == i_block_once )
 933     {
 934         return 0;
 935     }
 936
 937     return -1;
 938 }
 939
 940 /*****************************************************************************
 941  * DVDRewind : reads a stream backward
 942  *****************************************************************************/
 943 static int DVDRewind( input_thread_t * p_input )
 944 {
 945     return( -1 );
 946 }
 947
 948 /*****************************************************************************
 949  * DVDSeek : Goes to a given position on the stream.
 950  *****************************************************************************
 951  * This one is used by the input and translate chronological position from
 952  * input to logical position on the device.
 953  * The lock should be taken before calling this function.
 954  *****************************************************************************/
 955 static void DVDSeek( input_thread_t * p_input, off_t i_off )
 956 {
 957     thread_dvd_data_t *     p_dvd;
 958     int                     i_prg_cell;
 959     int                     i_cell;
 960     int                     i_chapter;
 961     int                     i_angle;
 962
 963     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 964
 965     /* we have to take care of offset of beginning of title */
 966     p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
 967                        - p_dvd->i_title_start;
 968
 969     i_prg_cell = 0;
 970     i_chapter = 0;
 971
 972     /* parse vobu address map to find program cell */
 973     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
 974     {
 975         i_prg_cell++;
 976     }
 977
 978     p_dvd->i_prg_cell = i_prg_cell;
 979
 980     if( DVDChooseAngle( p_dvd ) < 0 )
 981     {
 982         p_input->b_error = 1;
 983         return;
 984     }
 985
 986     p_dvd->i_cell = 0;
 987
 988     /* Find first title cell which is inside program cell */
 989     if( DVDFindCell( p_dvd ) < 0 )
 990     {
 991         /* no following cell : we're at eof */
 992         intf_ErrMsg( "dvd error: cell seeking failed" );
 993         p_input->b_error = 1;
 994         return;
 995     }
 996
 997     i_cell = p_dvd->i_cell;
 998
 999 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1000     /* parse cell address map to find title cell containing sector */
1001     while( cell.i_end_sector < p_dvd->i_sector )
1002     {
1003         i_cell++;
1004     }
1005
1006     p_dvd->i_cell = i_cell;
1007
1008     /* if we're inside a multi-angle zone, we have to choose i_sector
1009      * in the current angle ; we can't do it all the time since cells
1010      * can be very wide out of such zones */
1011     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1012     {
1013         p_dvd->i_sector = MAX(
1014                 cell.i_start_sector,
1015                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1016     }
1017
1018     p_dvd->i_end_sector = MIN(
1019             cell.i_end_sector,
1020             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1021 #undef cell
1022     /* update chapter */
1023     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1024     {
1025         i_angle = p_dvd->i_angle - 1;
1026     }
1027     else
1028     {
1029         i_angle = 0;
1030     }
1031     if( p_dvd->i_chapter_nb > 1 )
1032     {
1033         while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1034                     ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1035                ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1036         {
1037             i_chapter++;
1038         }
1039     }
1040     else
1041     {
1042         i_chapter = 1;
1043     }
1044
1045     p_dvd->i_chapter = i_chapter;
1046     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1047
1048     p_input->stream.p_selected_area->i_tell =
1049         LB2OFF ( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_title_start
1050                                                  + p_dvd->i_sector ) )
1051          - p_input->stream.p_selected_area->i_start;
1052
1053     intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1054                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1055
1056
1057     return;
1058 }
1059
1060 #define cell  p_dvd->p_ifo->vts.cell_inf
1061
1062 /*****************************************************************************
1063  * DVDFindCell: adjust the title cell index with the program cell
1064  *****************************************************************************/
1065 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1066 {
1067     int                 i_cell;
1068     int                 i_index;
1069
1070     i_cell = p_dvd->i_cell;
1071     i_index = p_dvd->i_prg_cell;
1072
1073     if( i_cell >= cell.i_cell_nb )
1074     {
1075         return -1;
1076     }
1077
1078     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1079                    cell.p_cell_map[i_cell].i_vob_id ) ||
1080       ( title.p_cell_pos[i_index].i_cell_id !=
1081                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1082            ( i_cell < cell.i_cell_nb - 1 ) )
1083     {
1084         i_cell++;
1085     }
1086
1087 /*
1088 intf_WarnMsg( 7, "FindCell: i_cell %d i_index %d found %d nb %d",
1089                     p_dvd->i_cell,
1090                     p_dvd->i_prg_cell,
1091                     i_cell,
1092                     cell.i_cell_nb );
1093 */
1094
1095     p_dvd->i_cell = i_cell;
1096
1097     return 0;
1098 }
1099
1100 #undef cell
1101
1102 /*****************************************************************************
1103  * DVDFindSector: find cell index in adress map from index in
1104  * information table program map and give corresponding sectors.
1105  *****************************************************************************/
1106 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1107 {
1108
1109     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1110     {
1111         p_dvd->i_prg_cell++;
1112
1113         if( DVDChooseAngle( p_dvd ) < 0 )
1114         {
1115             return -1;
1116         }
1117     }
1118
1119     if( DVDFindCell( p_dvd ) < 0 )
1120     {
1121         intf_ErrMsg( "dvd error: can't find sector" );
1122         return -1;
1123     }
1124
1125     /* Find start and end sectors of new cell */
1126 #if 1
1127     p_dvd->i_sector = MAX(
1128          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1129          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1130     p_dvd->i_end_sector = MIN(
1131          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1132          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1133 #else
1134     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1135     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1136 #endif
1137
1138 /*
1139     intf_WarnMsg( 7, "cell: %d sector1: 0x%x end1: 0x%x\n"
1140                    "index: %d sector2: 0x%x end2: 0x%x\n"
1141                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1142         p_dvd->i_cell,
1143         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1144         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1145         p_dvd->i_prg_cell,
1146         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1147         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1148         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1149         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1150         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1151 */
1152
1153     return 0;
1154 }
1155
1156 /*****************************************************************************
1157  * DVDChapterSelect: find the cell corresponding to requested chapter
1158  *****************************************************************************/
1159 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1160 {
1161
1162     /* Find cell index in Program chain for current chapter */
1163     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1164     p_dvd->i_cell = 0;
1165     p_dvd->i_sector = 0;
1166
1167     DVDChooseAngle( p_dvd );
1168
1169     /* Search for cell_index in cell adress_table and initialize
1170      * start sector */
1171     if( DVDFindSector( p_dvd ) < 0 )
1172     {
1173         intf_ErrMsg( "dvd error: can't select chapter" );
1174         return -1;
1175     }
1176
1177     /* start is : beginning of vts vobs + offset to vob x */
1178     p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1179
1180     /* Position the fd pointer on the right address */
1181     p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start );
1182
1183     p_dvd->i_chapter = i_chapter;
1184     return 0;
1185 }
1186
1187 /*****************************************************************************
1188  * DVDChooseAngle: select the cell corresponding to the selected angle
1189  *****************************************************************************/
1190 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1191 {
1192     /* basic handling of angles */
1193     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1194                     >> 12 ) )
1195     {
1196         /* we enter a muli-angle section */
1197         case 0x5:
1198             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1199             p_dvd->i_angle_cell = 0;
1200             break;
1201         /* we exit a multi-angle section */
1202         case 0x9:
1203         case 0xd:
1204             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1205             break;
1206     }
1207
1208     return 0;
1209 }
1210
1211 #undef title