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 1.98 2001/11/19 15:13:11 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 #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 #ifdef GOD_DAMN_DMCA
  63 #   include "dummy_dvdcss.h"
  64 #else
  65 #   include <videolan/dvdcss.h>
  66 #endif
  67
  68 #include "config.h"
  69 #include "common.h"
  70 #include "threads.h"
  71 #include "mtime.h"
  72 #include "iso_lang.h"
  73 #include "tests.h"
  74
  75 #if defined( WIN32 )
  76 #   include "input_iovec.h"
  77 #endif
  78
  79 #include "intf_msg.h"
  80
  81 #include "main.h"
  82
  83 #include "stream_control.h"
  84 #include "input_ext-intf.h"
  85 #include "input_ext-dec.h"
  86 #include "input_ext-plugins.h"
  87
  88 #include "input_dvd.h"
  89 #include "dvd_ifo.h"
  90 #include "dvd_summary.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       = input_NetlistNewPacket;
 141     input.pf_new_pes          = input_NetlistNewPES;
 142     input.pf_delete_packet    = input_NetlistDeletePacket;
 143     input.pf_delete_pes       = input_NetlistDeletePES;
 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         return( 999 );
 166     }
 167
 168     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 169     {
 170         /* If the user specified "dvd:" then it's probably a DVD */
 171         i_score = 100;
 172         psz_name += 4;
 173     }
 174
 175     return( i_score );
 176 }
 177
 178 /*****************************************************************************
 179  * DVDInit: initializes DVD structures
 180  *****************************************************************************/
 181 static void DVDInit( input_thread_t * p_input )
 182 {
 183     thread_dvd_data_t *  p_dvd;
 184     input_area_t *       p_area;
 185     int                  i_title;
 186     int                  i_chapter;
 187     int                  i;
 188
 189     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 190     if( p_dvd == NULL )
 191     {
 192         intf_ErrMsg( "dvd error: out of memory" );
 193         p_input->b_error = 1;
 194         return;
 195     }
 196
 197     p_input->p_plugin_data = (void *)p_dvd;
 198     p_input->p_method_data = NULL;
 199
 200     p_dvd->dvdhandle = (dvdcss_handle) p_input->p_handle;
 201
 202     if( dvdcss_seek( p_dvd->dvdhandle, 0, DVDCSS_NOFLAGS ) < 0 )
 203     {
 204         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 205         p_input->b_error = 1;
 206         return;
 207     }
 208
 209     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 210      * DVD_DATA_READ_ONCE at most */
 211     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 212     /* this value mustn't be modifed */
 213     p_input->i_read_once = DVD_DATA_READ_ONCE;
 214
 215     /* Reading structures initialisation */
 216     input_NetlistInit( p_input, DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
 217                        DVD_NETLIST_SIZE, DVD_LB_SIZE, p_dvd->i_block_once );
 218     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 219
 220     /* Ifo allocation & initialisation */
 221     if( IfoCreate( p_dvd ) < 0 )
 222     {
 223         intf_ErrMsg( "dvd error: allcation error in ifo" );
 224         dvdcss_close( p_dvd->dvdhandle );
 225         free( p_dvd );
 226         p_input->b_error = 1;
 227         return;
 228     }
 229
 230     if( IfoInit( p_dvd->p_ifo ) < 0 )
 231     {
 232         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 233         IfoDestroy( p_dvd->p_ifo );
 234         dvdcss_close( p_dvd->dvdhandle );
 235         free( p_dvd );
 236         p_input->b_error = 1;
 237         return;
 238     }
 239
 240     /* Set stream and area data */
 241     vlc_mutex_lock( &p_input->stream.stream_lock );
 242
 243     /* Initialize ES structures */
 244     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 245
 246 #define title_inf p_dvd->p_ifo->vmg.title_inf
 247     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 248
 249 #define area p_input->stream.pp_areas
 250     /* We start from 1 here since the default area 0
 251      * is reserved for video_ts.vob */
 252     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 253     {
 254         input_AddArea( p_input );
 255
 256         /* Titles are Program Chains */
 257         area[i]->i_id = i;
 258
 259         /* Absolute start offset and size
 260          * We can only set that with vts ifo, so we do it during the
 261          * first call to DVDSetArea */
 262         area[i]->i_start = 0;
 263         area[i]->i_size = 0;
 264
 265         /* Number of chapters */
 266         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 267         area[i]->i_part = 1;
 268
 269         /* Number of angles */
 270         area[i]->i_angle_nb = 0;
 271         area[i]->i_angle = 1;
 272
 273         /* Offset to vts_i_0.ifo */
 274         area[i]->i_plugin_data = p_dvd->p_ifo->i_start +
 275                        title_inf.p_attr[i-1].i_start_sector;
 276     }
 277 #undef area
 278
 279     /* Get requested title - if none try the first title */
 280     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 281     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 282     {
 283         i_title = 1;
 284     }
 285
 286 #undef title_inf
 287
 288     /* Get requested chapter - if none defaults to first one */
 289     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 290     if( i_chapter <= 0 )
 291     {
 292         i_chapter = 1;
 293     }
 294
 295     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 296
 297     p_area = p_input->stream.pp_areas[i_title];
 298
 299     /* set title, chapter, audio and subpic */
 300     DVDSetArea( p_input, p_area );
 301
 302     vlc_mutex_unlock( &p_input->stream.stream_lock );
 303
 304     return;
 305 }
 306
 307 /*****************************************************************************
 308  * DVDOpen: open dvd
 309  *****************************************************************************/
 310 static void DVDOpen( struct input_thread_s *p_input )
 311 {
 312     dvdcss_handle dvdhandle;
 313
 314     vlc_mutex_lock( &p_input->stream.stream_lock );
 315
 316     /* If we are here we can control the pace... */
 317     p_input->stream.b_pace_control = 1;
 318
 319     p_input->stream.b_seekable = 1;
 320     p_input->stream.p_selected_area->i_size = 0;
 321
 322     p_input->stream.p_selected_area->i_tell = 0;
 323
 324     vlc_mutex_unlock( &p_input->stream.stream_lock );
 325
 326     /* XXX: put this shit in an access plugin */
 327     if( strlen( p_input->p_source ) > 4
 328          && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
 329     {
 330         dvdhandle = dvdcss_open( p_input->p_source + 4 );
 331     }
 332     else
 333     {
 334         dvdhandle = dvdcss_open( p_input->p_source );
 335     }
 336
 337     if( dvdhandle == NULL )
 338     {
 339         intf_ErrMsg( "dvd error: dvdcss can't open device" );
 340         p_input->b_error = 1;
 341         return;
 342     }
 343
 344     p_input->p_handle = (void *) dvdhandle;
 345 }
 346
 347 /*****************************************************************************
 348  * DVDClose: close dvd
 349  *****************************************************************************/
 350 static void DVDClose( struct input_thread_s *p_input )
 351 {
 352     /* Clean up libdvdcss */
 353     dvdcss_close( (dvdcss_handle) p_input->p_handle );
 354 }
 355
 356 /*****************************************************************************
 357  * DVDEnd: frees unused data
 358  *****************************************************************************/
 359 static void DVDEnd( input_thread_t * p_input )
 360 {
 361     thread_dvd_data_t *     p_dvd;
 362
 363     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 364
 365     IfoDestroy( p_dvd->p_ifo );
 366
 367     free( p_dvd );
 368
 369     input_NetlistEnd( p_input );
 370 }
 371
 372 /*****************************************************************************
 373  * DVDSetArea: initialize input data for title x, chapter y.
 374  * It should be called for each user navigation request.
 375  *****************************************************************************
 376  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 377  * Note that you have to take the lock before entering here.
 378  *****************************************************************************/
 379 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 380 {
 381     thread_dvd_data_t *  p_dvd;
 382     es_descriptor_t *    p_es;
 383     u16                  i_id;
 384     int                  i_vts_title;
 385     int                  i_audio_nb = 0;
 386     int                  i_spu_nb = 0;
 387     int                  i_audio;
 388     int                  i_spu;
 389     int                  i;
 390
 391     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 392
 393     /* we can't use the interface slider until initilization is complete */
 394     p_input->stream.b_seekable = 0;
 395
 396     if( p_area != p_input->stream.p_selected_area )
 397     {
 398         /* Reset the Chapter position of the old title */
 399         p_input->stream.p_selected_area->i_part = 0;
 400
 401         /*
 402          *  We have to load all title information
 403          */
 404         /* Change the default area */
 405         p_input->stream.p_selected_area =
 406                     p_input->stream.pp_areas[p_area->i_id];
 407
 408         /* title number: it is not vts nb!,
 409          * it is what appears in the interface list */
 410         p_dvd->i_title = p_area->i_id;
 411         p_dvd->p_ifo->i_title = p_dvd->i_title;
 412
 413         /* set number of chapters of current title */
 414         p_dvd->i_chapter_nb = p_area->i_part_nb;
 415
 416         /* ifo vts */
 417         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 418         {
 419             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 420             free( p_dvd );
 421             p_input->b_error = 1;
 422             return -1;
 423         }
 424
 425 #define vmg p_dvd->p_ifo->vmg
 426 #define vts p_dvd->p_ifo->vts
 427         /* title position inside the selected vts */
 428         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 429         p_dvd->i_title_id =
 430             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 431
 432         intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
 433                          p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
 434
 435
 436         /*
 437          * Angle management
 438          */
 439         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 440         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 441         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 442         {
 443             p_dvd->i_angle = 1;
 444         }
 445
 446         /*
 447          * Set selected title start and size
 448          */
 449
 450         /* title set offset XXX: convert to block values */
 451         p_dvd->i_title_start =
 452             vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
 453
 454         /* last video cell */
 455         p_dvd->i_cell = 0;
 456         p_dvd->i_prg_cell = -1 +
 457             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 458
 459         if( DVDFindCell( p_dvd ) < 0 )
 460         {
 461             intf_ErrMsg( "dvd error: can't find title end" );
 462             p_input->b_error = 1;
 463             return -1;
 464         }
 465
 466         /* temporary hack to fix size in some dvds */
 467         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 468         {
 469             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 470         }
 471
 472         p_dvd->i_sector = 0;
 473         p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
 474
 475         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 476         {
 477             intf_ErrMsg( "dvd error: can't find first chapter" );
 478             p_input->b_error = 1;
 479             return -1;
 480         }
 481
 482         /* Force libdvdcss to check its title key.
 483          * It is only useful for title cracking method. Methods using the
 484          * decrypted disc key are fast enough to check the key at each seek */
 485
 486         if( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start,
 487                                 DVDCSS_SEEK_KEY ) < 0 )
 488         {
 489             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 490             return -1;
 491         }
 492
 493         p_dvd->i_size -= p_dvd->i_sector + 1;
 494
 495         IfoPrintTitle( p_dvd );
 496
 497         /* Area definition */
 498         p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
 499         p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
 500         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 501         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 502
 503 #if 0
 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 #endif
 510
 511         /*
 512          * Destroy obsolete ES by reinitializing program 0
 513          * and find all ES in title with ifo data
 514          */
 515         if( p_input->stream.pp_programs != NULL )
 516         {
 517             /* We don't use input_EndStream here since
 518              * we keep area structures */
 519
 520             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 521             {
 522                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 523             }
 524
 525             free( p_input->stream.pp_selected_es );
 526             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 527
 528             p_input->stream.pp_selected_es = NULL;
 529             p_input->stream.i_selected_es_number = 0;
 530         }
 531
 532         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 533
 534         /* No PSM to read in DVD mode, we already have all information */
 535         p_input->stream.pp_programs[0]->b_is_ok = 1;
 536
 537         p_es = NULL;
 538
 539         /* ES 0 -> video MPEG2 */
 540         IfoPrintVideo( p_dvd );
 541
 542         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 543         p_es->i_stream_id = 0xe0;
 544         p_es->i_type = MPEG2_VIDEO_ES;
 545         p_es->i_cat = VIDEO_ES;
 546         if( p_main->b_video )
 547         {
 548             input_SelectES( p_input, p_es );
 549         }
 550
 551 #define audio_status \
 552     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 553         /* Audio ES, in the order they appear in .ifo */
 554         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 555         {
 556             IfoPrintAudio( p_dvd, i );
 557
 558             /* audio channel is active if first byte is 0x80 */
 559             if( audio_status.i_available )
 560             {
 561                 i_audio_nb++;
 562
 563                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 564                 {
 565                 case 0x00:              /* AC3 */
 566                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 567                     p_es = input_AddES( p_input,
 568                                p_input->stream.pp_programs[0], i_id, 0 );
 569                     p_es->i_stream_id = 0xbd;
 570                     p_es->i_type = AC3_AUDIO_ES;
 571                     p_es->b_audio = 1;
 572                     p_es->i_cat = AUDIO_ES;
 573                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 574                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 575                     strcat( p_es->psz_desc, " (ac3)" );
 576
 577                     break;
 578                 case 0x02:
 579                 case 0x03:              /* MPEG audio */
 580                     i_id = 0xc0 + audio_status.i_position;
 581                     p_es = input_AddES( p_input,
 582                                     p_input->stream.pp_programs[0], i_id, 0 );
 583                     p_es->i_stream_id = i_id;
 584                     p_es->i_type = MPEG2_AUDIO_ES;
 585                     p_es->b_audio = 1;
 586                     p_es->i_cat = AUDIO_ES;
 587                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 588                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 589                     strcat( p_es->psz_desc, " (mpeg)" );
 590
 591                     break;
 592                 case 0x04:              /* LPCM */
 593
 594                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 595                     p_es = input_AddES( p_input,
 596                                     p_input->stream.pp_programs[0], i_id, 0 );
 597                     p_es->i_stream_id = 0xbd;
 598                     p_es->i_type = LPCM_AUDIO_ES;
 599                     p_es->b_audio = 1;
 600                     p_es->i_cat = AUDIO_ES;
 601                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 602                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 603                     strcat( p_es->psz_desc, " (lpcm)" );
 604
 605                     break;
 606                 case 0x06:              /* DTS */
 607                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 608                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 609                                  "(0x%x)", i_id );
 610                     break;
 611                 default:
 612                     i_id = 0;
 613                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 614                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 615                 }
 616             }
 617         }
 618 #undef audio_status
 619 #define spu_status \
 620     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 621
 622         /* Sub Picture ES */
 623
 624         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 625         {
 626             IfoPrintSpu( p_dvd, i );
 627
 628             if( spu_status.i_available )
 629             {
 630                 i_spu_nb++;
 631
 632                 /*  there are several streams for one spu */
 633                 if(  vts.manager_inf.video_attr.i_ratio )
 634                 {
 635                     /* 16:9 */
 636                     switch( vts.manager_inf.video_attr.i_perm_displ )
 637                     {
 638                     case 1:
 639                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 640                                | 0xbd;
 641                         break;
 642                     case 2:
 643                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 644                                | 0xbd;
 645                         break;
 646                     default:
 647                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 648                                | 0xbd;
 649                         break;
 650                     }
 651                 }
 652                 else
 653                 {
 654                     /* 4:3 */
 655                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 656                            | 0xbd;
 657                 }
 658                 p_es = input_AddES( p_input,
 659                                     p_input->stream.pp_programs[0], i_id, 0 );
 660                 p_es->i_stream_id = 0xbd;
 661                 p_es->i_type = DVD_SPU_ES;
 662                 p_es->i_cat = SPU_ES;
 663                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 664                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 665             }
 666         }
 667 #undef spu_status
 668         if( p_main->b_audio )
 669         {
 670             /* For audio: first one if none or a not existing one specified */
 671             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 672             if( i_audio < 0 || i_audio > i_audio_nb )
 673             {
 674                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 675                 i_audio = 1;
 676             }
 677             if( i_audio > 0 && i_audio_nb > 0 )
 678             {
 679                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 680                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 681                       REQUESTED_AC3 ) )
 682                 {
 683                     int     i_ac3 = i_audio;
 684                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 685                              AC3_AUDIO_ES ) && ( i_ac3 <=
 686                              vts.manager_inf.i_audio_nb ) )
 687                     {
 688                         i_ac3++;
 689                     }
 690                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 691                     {
 692                         input_SelectES( p_input,
 693                                         p_input->stream.pp_es[i_ac3] );
 694                     }
 695                 }
 696                 else
 697                 {
 698                     input_SelectES( p_input,
 699                                     p_input->stream.pp_es[i_audio] );
 700                 }
 701             }
 702         }
 703
 704         if( p_main->b_video )
 705         {
 706             /* for spu, default is none */
 707             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 708             if( i_spu < 0 || i_spu > i_spu_nb )
 709             {
 710                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 711                 i_spu = 0;
 712             }
 713             if( i_spu > 0 && i_spu_nb > 0 )
 714             {
 715                 i_spu += vts.manager_inf.i_audio_nb;
 716                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 717             }
 718         }
 719     } /* i_title >= 0 */
 720     else
 721     {
 722         p_area = p_input->stream.p_selected_area;
 723     }
 724 #undef vts
 725 #undef vmg
 726
 727     /*
 728      * Chapter selection
 729      */
 730
 731     if( p_area->i_part != p_dvd->i_chapter )
 732     {
 733         if( ( p_area->i_part > 0 ) &&
 734             ( p_area->i_part <= p_area->i_part_nb ))
 735         {
 736             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 737             {
 738                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 739                 p_input->b_error = 1;
 740                 return -1;
 741             }
 742
 743             p_input->stream.p_selected_area->i_tell =
 744                                    LB2OFF( p_dvd->i_start ) - p_area->i_start;
 745             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 746
 747             intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
 748                                         p_area->i_part, p_area->i_tell );
 749         }
 750         else
 751         {
 752             p_area->i_part = 1;
 753             p_dvd->i_chapter = 1;
 754         }
 755     }
 756
 757 #define title \
 758     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 759     if( p_area->i_angle != p_dvd->i_angle )
 760     {
 761         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 762         {
 763             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 764             {
 765                 p_dvd->i_cell = 0;
 766             }
 767             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 768             p_dvd->i_angle = p_area->i_angle;
 769
 770             DVDFindSector( p_dvd );
 771             p_dvd->i_cell += p_dvd->i_angle_cell;
 772         }
 773         else
 774         {
 775             p_dvd->i_angle = p_area->i_angle;
 776         }
 777
 778         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 779     }
 780
 781     /* warn interface that something has changed */
 782     p_input->stream.b_seekable = 1;
 783     p_input->stream.b_changed = 1;
 784
 785     return 0;
 786 }
 787
 788
 789 /*****************************************************************************
 790  * DVDRead: reads data packets into the netlist.
 791  *****************************************************************************
 792  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 793  * EOF.
 794  *****************************************************************************/
 795 static int DVDRead( input_thread_t * p_input,
 796                     data_packet_t ** pp_packets )
 797 {
 798     thread_dvd_data_t *     p_dvd;
 799     netlist_t *             p_netlist;
 800     struct iovec *          p_vec;
 801     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 802     u8 *                    pi_cur;
 803     int                     i_block_once;
 804     int                     i_packet_size;
 805     int                     i_iovec;
 806     int                     i_packet;
 807     int                     i_pos;
 808     int                     i_read_blocks;
 809     int                     i_sector;
 810     boolean_t               b_eof;
 811     boolean_t               b_eot;
 812     boolean_t               b_eoc;
 813
 814     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 815     p_netlist = (netlist_t *)p_input->p_method_data;
 816
 817     b_eoc = 0;
 818     i_sector = p_dvd->i_title_start + p_dvd->i_sector;
 819     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 820
 821
 822     /* Get the position of the next cell if we're at cell end */
 823     if( i_block_once <= 0 )
 824     {
 825         int     i_angle;
 826
 827         p_dvd->i_cell++;
 828         p_dvd->i_angle_cell++;
 829
 830         /* Find cell index in adress map */
 831         if( DVDFindSector( p_dvd ) < 0 )
 832         {
 833             pp_packets[0] = NULL;
 834             intf_ErrMsg( "dvd error: can't find next cell" );
 835             return 1;
 836         }
 837
 838         /* Position the fd pointer on the right address */
 839         if( ( i_sector = dvdcss_seek( p_dvd->dvdhandle,
 840                                       p_dvd->i_title_start + p_dvd->i_sector,
 841                                       DVDCSS_SEEK_MPEG ) ) < 0 )
 842         {
 843             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 844             return -1;
 845         }
 846
 847         /* update chapter : it will be easier when we have navigation
 848          * ES support */
 849         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 850         {
 851             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 852             {
 853                 i_angle = p_dvd->i_angle - 1;
 854             }
 855             else
 856             {
 857                 i_angle = 0;
 858             }
 859             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 860                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 861             {
 862                 p_dvd->i_chapter++;
 863                 b_eoc = 1;
 864             }
 865         }
 866
 867         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 868     }
 869
 870     /* The number of blocks read is the max between the requested
 871      * value and the leaving block in the cell */
 872     if( i_block_once > p_dvd->i_block_once )
 873     {
 874         i_block_once = p_dvd->i_block_once;
 875     }
 876 /*
 877 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 878 */
 879     p_netlist->i_read_once = i_block_once;
 880
 881     /* Get an iovec pointer */
 882     if( ( p_vec = input_NetlistGetiovec( p_netlist ) ) == NULL )
 883     {
 884         intf_ErrMsg( "dvd error: can't get iovec" );
 885         return -1;
 886     }
 887
 888     /* Reads from DVD */
 889     i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
 890                                   i_block_once, DVDCSS_READ_DECRYPT );
 891
 892     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 893      * need know the real number of blocks read */
 894     input_NetlistMviovec( p_netlist, i_read_blocks, pp_data );
 895
 896     /* Update global position */
 897     p_dvd->i_sector += i_read_blocks;
 898
 899     i_packet = 0;
 900
 901     /* Read headers to compute payload length */
 902     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 903     {
 904         i_pos = 0;
 905
 906         while( i_pos < p_netlist->i_buffer_size )
 907         {
 908             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 909
 910             /*default header */
 911             if( U32_AT( pi_cur ) != 0x1BA )
 912             {
 913                 /* That's the case for all packets, except pack header. */
 914                 i_packet_size = U16_AT( pi_cur + 4 );
 915                 pp_packets[i_packet] = input_NetlistNewPtr( p_netlist );
 916                 (*pp_data[i_iovec]->pi_refcount)++;
 917                 pp_packets[i_packet]->pi_refcount =
 918                     pp_data[i_iovec]->pi_refcount;
 919                 pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 920             }
 921             else
 922             {
 923                 /* MPEG-2 Pack header. */
 924                 i_packet_size = 8;
 925                 pp_packets[i_packet] = pp_data[i_iovec];
 926             }
 927
 928             pp_packets[i_packet]->p_payload_start =
 929                     pp_packets[i_packet]->p_buffer + i_pos;
 930
 931             pp_packets[i_packet]->p_payload_end =
 932                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 933
 934             i_packet++;
 935             i_pos += i_packet_size + 6;
 936         }
 937     }
 938
 939     pp_packets[i_packet] = NULL;
 940
 941     vlc_mutex_lock( &p_input->stream.stream_lock );
 942
 943     p_input->stream.p_selected_area->i_tell =
 944         LB2OFF( i_sector + i_read_blocks ) -
 945         p_input->stream.p_selected_area->i_start;
 946     if( b_eoc )
 947     {
 948         /* We modify i_part only at end of chapter not to erase
 949          * some modification from the interface */
 950         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 951     }
 952
 953     b_eot = !( p_input->stream.p_selected_area->i_tell
 954                   < p_input->stream.p_selected_area->i_size );
 955     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 956
 957     if( b_eof )
 958     {
 959         vlc_mutex_unlock( &p_input->stream.stream_lock );
 960         return 1;
 961     }
 962
 963     if( b_eot )
 964     {
 965         intf_WarnMsg( 4, "dvd info: new title" );
 966         p_dvd->i_title++;
 967         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 968         vlc_mutex_unlock( &p_input->stream.stream_lock );
 969         return 0;
 970     }
 971
 972     vlc_mutex_unlock( &p_input->stream.stream_lock );
 973
 974     if( i_read_blocks == i_block_once )
 975     {
 976         return 0;
 977     }
 978
 979     return -1;
 980 }
 981
 982 /*****************************************************************************
 983  * DVDRewind : reads a stream backward
 984  *****************************************************************************/
 985 static int DVDRewind( input_thread_t * p_input )
 986 {
 987     return( -1 );
 988 }
 989
 990 /*****************************************************************************
 991  * DVDSeek : Goes to a given position on the stream.
 992  *****************************************************************************
 993  * This one is used by the input and translate chronological position from
 994  * input to logical position on the device.
 995  * The lock should be taken before calling this function.
 996  *****************************************************************************/
 997 static void DVDSeek( input_thread_t * p_input, off_t i_off )
 998 {
 999     thread_dvd_data_t *     p_dvd;
1000     int                     i_block;
1001     int                     i_prg_cell;
1002     int                     i_cell;
1003     int                     i_chapter;
1004     int                     i_angle;
1005
1006     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1007
1008     /* we have to take care of offset of beginning of title */
1009     p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
1010                        - p_dvd->i_title_start;
1011
1012     i_prg_cell = 0;
1013     i_chapter = 0;
1014
1015     /* parse vobu address map to find program cell */
1016     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1017     {
1018         i_prg_cell++;
1019     }
1020
1021     p_dvd->i_prg_cell = i_prg_cell;
1022
1023     if( DVDChooseAngle( p_dvd ) < 0 )
1024     {
1025         p_input->b_error = 1;
1026         return;
1027     }
1028
1029     p_dvd->i_cell = 0;
1030
1031     /* Find first title cell which is inside program cell */
1032     if( DVDFindCell( p_dvd ) < 0 )
1033     {
1034         /* no following cell : we're at eof */
1035         intf_ErrMsg( "dvd error: cell seeking failed" );
1036         p_input->b_error = 1;
1037         return;
1038     }
1039
1040     i_cell = p_dvd->i_cell;
1041
1042 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1043     /* parse cell address map to find title cell containing sector */
1044     while( cell.i_end_sector < p_dvd->i_sector )
1045     {
1046         i_cell++;
1047     }
1048
1049     p_dvd->i_cell = i_cell;
1050
1051     /* if we're inside a multi-angle zone, we have to choose i_sector
1052      * in the current angle ; we can't do it all the time since cells
1053      * can be very wide out of such zones */
1054     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1055     {
1056         p_dvd->i_sector = MAX(
1057                 cell.i_start_sector,
1058                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1059     }
1060
1061     p_dvd->i_end_sector = MIN(
1062             cell.i_end_sector,
1063             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1064 #undef cell
1065     /* update chapter */
1066     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1067     {
1068         i_angle = p_dvd->i_angle - 1;
1069     }
1070     else
1071     {
1072         i_angle = 0;
1073     }
1074     if( p_dvd->i_chapter_nb > 1 )
1075     {
1076         while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1077                     ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1078                ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1079         {
1080             i_chapter++;
1081         }
1082     }
1083     else
1084     {
1085         i_chapter = 1;
1086     }
1087
1088     p_dvd->i_chapter = i_chapter;
1089     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1090
1091     if( ( i_block = dvdcss_seek( p_dvd->dvdhandle,
1092                                  p_dvd->i_title_start + p_dvd->i_sector,
1093                                  DVDCSS_SEEK_MPEG ) ) < 0 )
1094     {
1095         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1096         p_input->b_error = 1;
1097         return;
1098     }
1099
1100     p_input->stream.p_selected_area->i_tell =
1101         LB2OFF ( i_block ) - p_input->stream.p_selected_area->i_start;
1102
1103     intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1104                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1105
1106
1107     return;
1108 }
1109
1110 #define cell  p_dvd->p_ifo->vts.cell_inf
1111
1112 /*****************************************************************************
1113  * DVDFindCell: adjust the title cell index with the program cell
1114  *****************************************************************************/
1115 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1116 {
1117     int                 i_cell;
1118     int                 i_index;
1119
1120     i_cell = p_dvd->i_cell;
1121     i_index = p_dvd->i_prg_cell;
1122
1123     if( i_cell >= cell.i_cell_nb )
1124     {
1125         return -1;
1126     }
1127
1128     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1129                    cell.p_cell_map[i_cell].i_vob_id ) ||
1130       ( title.p_cell_pos[i_index].i_cell_id !=
1131                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1132            ( i_cell < cell.i_cell_nb - 1 ) )
1133     {
1134         i_cell++;
1135     }
1136
1137 /*
1138 intf_WarnMsg( 12, "FindCell: i_cell %d i_index %d found %d nb %d",
1139                     p_dvd->i_cell,
1140                     p_dvd->i_prg_cell,
1141                     i_cell,
1142                     cell.i_cell_nb );
1143 */
1144
1145     p_dvd->i_cell = i_cell;
1146
1147     return 0;
1148 }
1149
1150 #undef cell
1151
1152 /*****************************************************************************
1153  * DVDFindSector: find cell index in adress map from index in
1154  * information table program map and give corresponding sectors.
1155  *****************************************************************************/
1156 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1157 {
1158
1159     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1160     {
1161         p_dvd->i_prg_cell++;
1162
1163         if( DVDChooseAngle( p_dvd ) < 0 )
1164         {
1165             return -1;
1166         }
1167     }
1168
1169     if( DVDFindCell( p_dvd ) < 0 )
1170     {
1171         intf_ErrMsg( "dvd error: can't find sector" );
1172         return -1;
1173     }
1174
1175     /* Find start and end sectors of new cell */
1176 #if 1
1177     p_dvd->i_sector = MAX(
1178          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1179          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1180     p_dvd->i_end_sector = MIN(
1181          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1182          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1183 #else
1184     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1185     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1186 #endif
1187
1188 /*
1189     intf_WarnMsg( 12, "cell: %d sector1: 0x%x end1: 0x%x\n"
1190                    "index: %d sector2: 0x%x end2: 0x%x\n"
1191                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1192         p_dvd->i_cell,
1193         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1194         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1195         p_dvd->i_prg_cell,
1196         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1197         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1198         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1199         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1200         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1201 */
1202
1203     return 0;
1204 }
1205
1206 /*****************************************************************************
1207  * DVDChapterSelect: find the cell corresponding to requested chapter
1208  *****************************************************************************/
1209 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1210 {
1211
1212     /* Find cell index in Program chain for current chapter */
1213     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1214     p_dvd->i_cell = 0;
1215     p_dvd->i_sector = 0;
1216
1217     DVDChooseAngle( p_dvd );
1218
1219     /* Search for cell_index in cell adress_table and initialize
1220      * start sector */
1221     if( DVDFindSector( p_dvd ) < 0 )
1222     {
1223         intf_ErrMsg( "dvd error: can't select chapter" );
1224         return -1;
1225     }
1226
1227     /* start is : beginning of vts vobs + offset to vob x */
1228     p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1229
1230     /* Position the fd pointer on the right address */
1231     if( ( p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle,
1232                                         p_dvd->i_start,
1233                                         DVDCSS_SEEK_MPEG ) ) < 0 )
1234     {
1235         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1236         return -1;
1237     }
1238
1239     p_dvd->i_chapter = i_chapter;
1240     return 0;
1241 }
1242
1243 /*****************************************************************************
1244  * DVDChooseAngle: select the cell corresponding to the selected angle
1245  *****************************************************************************/
1246 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1247 {
1248     /* basic handling of angles */
1249     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1250                     >> 12 ) )
1251     {
1252         /* we enter a muli-angle section */
1253         case 0x5:
1254             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1255             p_dvd->i_angle_cell = 0;
1256             break;
1257         /* we exit a multi-angle section */
1258         case 0x9:
1259         case 0xd:
1260             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1261             break;
1262     }
1263
1264     return 0;
1265 }
1266
1267 #undef title