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  *  -dvd_ifo for ifo parsing and analyse
   9  *  -dvd_css for unscrambling
  10  *  -dvd_udf to find files
  11  *****************************************************************************
  12  * Copyright (C) 1998-2001 VideoLAN
  13  * $Id: input_dvd.c,v 1.61 2001/05/30 17:03:12 sam Exp $
  14  *
  15  * Author: Stéphane Borel <stef@via.ecp.fr>
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  30  *****************************************************************************/
  31
  32 /*****************************************************************************
  33  * Preamble
  34  *****************************************************************************/
  35 #include "defs.h"
  36
  37 #ifdef HAVE_CSS
  38 #define MODULE_NAME dvd
  39 #else /* HAVE_CSS */
  40 #define MODULE_NAME dvdnocss
  41 #endif /* HAVE_CSS */
  42 #include "modules_inner.h"
  43
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <unistd.h>
  47 #include <netinet/in.h>
  48
  49 #include <fcntl.h>
  50 #include <sys/types.h>
  51 #include <sys/uio.h>
  52
  53 #include <string.h>
  54 #ifdef STRNCASECMP_IN_STRINGS_H
  55 #   include <strings.h>
  56 #endif
  57 #include <errno.h>
  58
  59 #include "config.h"
  60 #include "common.h"
  61 #include "threads.h"
  62 #include "mtime.h"
  63 #include "tests.h"
  64
  65 #include "intf_msg.h"
  66
  67 #include "main.h"
  68
  69 #include "stream_control.h"
  70 #include "input_ext-intf.h"
  71 #include "input_ext-dec.h"
  72
  73 #include "input.h"
  74
  75 #include "dvd_netlist.h"
  76 #include "dvd_ifo.h"
  77 #include "dvd_css.h"
  78 #include "dvd_summary.h"
  79 #include "input_dvd.h"
  80 #include "mpeg_system.h"
  81
  82 #include "debug.h"
  83
  84 #include "modules.h"
  85
  86 /*****************************************************************************
  87  * Local prototypes
  88  *****************************************************************************/
  89 /* called from outside */
  90 static int  DVDProbe    ( probedata_t *p_data );
  91 static void DVDInit     ( struct input_thread_s * );
  92 static void DVDEnd      ( struct input_thread_s * );
  93 static int  DVDSetArea  ( struct input_thread_s *, struct input_area_s * );
  94 static int  DVDRead     ( struct input_thread_s *, data_packet_t ** );
  95 static void DVDSeek     ( struct input_thread_s *, off_t );
  96 static int  DVDRewind   ( struct input_thread_s * );
  97
  98 /* called only inside */
  99 static int  DVDChooseAngle( thread_dvd_data_t * );
 100 static int  DVDFindCell( thread_dvd_data_t * );
 101 static int  DVDFindSector( thread_dvd_data_t * );
 102 static int  DVDChapterSelect( thread_dvd_data_t *, int );
 103
 104 /*****************************************************************************
 105  * Functions exported as capabilities. They are declared as static so that
 106  * we don't pollute the namespace too much.
 107  *****************************************************************************/
 108 void _M( input_getfunctions )( function_list_t * p_function_list )
 109 {
 110 #define input p_function_list->functions.input
 111     p_function_list->pf_probe = DVDProbe;
 112     input.pf_init             = DVDInit;
 113     input.pf_open             = NULL; /* Set in DVDInit */
 114     input.pf_close            = NULL;
 115     input.pf_end              = DVDEnd;
 116     input.pf_read             = DVDRead;
 117     input.pf_set_area         = DVDSetArea;
 118     input.pf_demux            = input_DemuxPS;
 119     input.pf_new_packet       = DVDNewPacket;
 120     input.pf_new_pes          = DVDNewPES;
 121     input.pf_delete_packet    = DVDDeletePacket;
 122     input.pf_delete_pes       = DVDDeletePES;
 123     input.pf_rewind           = DVDRewind;
 124     input.pf_seek             = DVDSeek;
 125 #undef input
 126 }
 127
 128 /*
 129  * Data reading functions
 130  */
 131
 132 /*****************************************************************************
 133  * DVDProbe: verifies that the stream is a PS stream
 134  *****************************************************************************/
 135 static int DVDProbe( probedata_t *p_data )
 136 {
 137     input_thread_t * p_input = (input_thread_t *)p_data;
 138
 139     char * psz_name = p_input->p_source;
 140     int i_handle;
 141     int i_score = 5;
 142
 143     if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
 144     {
 145 #ifdef HAVE_CSS
 146         return( 999 );
 147 #else /* HAVE_CSS */
 148         return( 998 );
 149 #endif /* HAVE_CSS */
 150     }
 151
 152     if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
 153     {
 154         /* If the user specified "dvd:" then it's probably a DVD */
 155 #ifdef HAVE_CSS
 156         i_score = 100;
 157 #else /* HAVE_CSS */
 158         i_score = 90;
 159 #endif /* HAVE_CSS */
 160         psz_name += 4;
 161     }
 162
 163     i_handle = open( psz_name, 0 );
 164     if( i_handle == -1 )
 165     {
 166         return( 0 );
 167     }
 168     close( i_handle );
 169
 170     return( i_score );
 171 }
 172
 173 /*****************************************************************************
 174  * DVDInit: initializes DVD structures
 175  *****************************************************************************/
 176 static void DVDInit( input_thread_t * p_input )
 177 {
 178     thread_dvd_data_t *  p_dvd;
 179     input_area_t *       p_area;
 180     int                  i_title;
 181     int                  i_chapter;
 182     int                  i;
 183
 184     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 185     if( p_dvd == NULL )
 186     {
 187         intf_ErrMsg( "dvd error: out of memory" );
 188         p_input->b_error = 1;
 189         return;
 190     }
 191
 192     p_input->p_plugin_data = (void *)p_dvd;
 193     p_input->p_method_data = NULL;
 194
 195     /* Set callback */
 196     p_input->pf_open  = p_input->pf_file_open;
 197     p_input->pf_close = p_input->pf_file_close;
 198
 199     p_dvd->i_fd = p_input->i_handle;
 200
 201     /* reading several block once seems to cause lock-up
 202      * when using input_ToggleES
 203      * who wrote thez damn buggy piece of shit ??? --stef */
 204     p_dvd->i_block_once = 32;
 205     p_input->i_read_once = 128;
 206
 207     i = CSSTest( p_input->i_handle );
 208
 209     if( i < 0 )
 210     {
 211         intf_ErrMsg( "dvd error: error in css" );
 212         free( p_dvd );
 213         p_input->b_error = 1;
 214         return;
 215     }
 216
 217     p_dvd->b_encrypted = i;
 218
 219     lseek( p_input->i_handle, 0, SEEK_SET );
 220
 221     /* Reading structures initialisation */
 222     p_input->p_method_data =
 223         DVDNetlistInit( 2048, 4096, 2048, DVD_LB_SIZE, p_dvd->i_block_once );
 224     intf_WarnMsg( 2, "dvd info: netlist initialized" );
 225
 226     /* Ifo allocation & initialisation */
 227     if( IfoCreate( p_dvd ) < 0 )
 228     {
 229         intf_ErrMsg( "dvd error: allcation error in ifo" );
 230         p_input->b_error = 1;
 231         return;
 232     }
 233
 234     if( IfoInit( p_dvd->p_ifo ) < 0 )
 235     {
 236         intf_ErrMsg( "dvd error: fatal failure in ifo" );
 237         free( p_dvd );
 238         p_input->b_error = 1;
 239         return;
 240     }
 241
 242     /* CSS initialisation */
 243     if( p_dvd->b_encrypted )
 244     {
 245         p_dvd->p_css = malloc( sizeof(css_t) );
 246         if( p_dvd->p_css == NULL )
 247         {
 248             intf_ErrMsg( "dvd error: couldn't create css structure" );
 249             free( p_dvd );
 250             p_input->b_error = 1;
 251             return;
 252         }
 253
 254         p_dvd->p_css->i_agid = 0;
 255
 256         if( CSSInit( p_input->i_handle, p_dvd->p_css ) < 0 )
 257         {
 258             intf_ErrMsg( "dvd error: fatal failure in css" );
 259             free( p_dvd->p_css );
 260             free( p_dvd );
 261             p_input->b_error = 1;
 262             return;
 263         }
 264
 265         intf_WarnMsg( 2, "dvd info: css initialized" );
 266     }
 267
 268     /* Set stream and area data */
 269     vlc_mutex_lock( &p_input->stream.stream_lock );
 270
 271     /* Initialize ES structures */
 272     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 273
 274     /* disc input method */
 275     p_input->stream.i_method = INPUT_METHOD_DVD;
 276
 277 #define title_inf p_dvd->p_ifo->vmg.title_inf
 278     intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
 279
 280 #define area p_input->stream.pp_areas
 281     /* We start from 1 here since the default area 0
 282      * is reserved for video_ts.vob */
 283     for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
 284     {
 285         input_AddArea( p_input );
 286
 287         /* Titles are Program Chains */
 288         area[i]->i_id = i;
 289
 290         /* Absolute start offset and size
 291          * We can only set that with vts ifo, so we do it during the
 292          * first call to DVDSetArea */
 293         area[i]->i_start = 0;
 294         area[i]->i_size = 0;
 295
 296         /* Number of chapters */
 297         area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
 298         area[i]->i_part = 1;
 299
 300         /* Number of angles */
 301         area[i]->i_angle_nb = 0;
 302         area[i]->i_angle = 1;
 303
 304         /* Offset to vts_i_0.ifo */
 305         area[i]->i_plugin_data = p_dvd->p_ifo->i_off +
 306                        ( title_inf.p_attr[i-1].i_start_sector * DVD_LB_SIZE );
 307     }
 308 #undef area
 309
 310     /* Get requested title - if none try the first title */
 311     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 312     if( i_title <= 0 || i_title > title_inf.i_title_nb )
 313     {
 314         i_title = 1;
 315     }
 316
 317 #undef title_inf
 318
 319     /* Get requested chapter - if none defaults to first one */
 320     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 321     if( i_chapter <= 0 )
 322     {
 323         i_chapter = 1;
 324     }
 325
 326     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 327
 328     p_area = p_input->stream.pp_areas[i_title];
 329
 330     /* set title, chapter, audio and subpic */
 331     DVDSetArea( p_input, p_area );
 332
 333     vlc_mutex_unlock( &p_input->stream.stream_lock );
 334
 335     return;
 336 }
 337
 338 /*****************************************************************************
 339  * DVDEnd: frees unused data
 340  *****************************************************************************/
 341 static void DVDEnd( input_thread_t * p_input )
 342 {
 343     thread_dvd_data_t *     p_dvd;
 344     dvd_netlist_t *         p_netlist;
 345
 346     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 347     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 348
 349     if( p_dvd->b_encrypted )
 350     {
 351         free( p_dvd->p_css );
 352     }
 353
 354     IfoDestroy( p_dvd->p_ifo );
 355     free( p_dvd );
 356     DVDNetlistEnd( p_netlist );
 357 }
 358
 359 /*****************************************************************************
 360  * DVDSetArea: initialize input data for title x, chapter y.
 361  * It should be called for each user navigation request.
 362  *****************************************************************************
 363  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 364  * Note that you have to take the lock before entering here.
 365  *****************************************************************************/
 366 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
 367 {
 368     thread_dvd_data_t *  p_dvd;
 369     es_descriptor_t *    p_es;
 370     u16                  i_id;
 371     int                  i_vts_title;
 372     int                  i_audio;
 373     int                  i_spu;
 374     int                  i;
 375     int                  j;
 376
 377     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 378
 379     /* we can't use the interface slider until initilization is complete */
 380     p_input->stream.b_seekable = 0;
 381
 382     if( p_area != p_input->stream.p_selected_area )
 383     {
 384
 385         /*
 386          *  We have to load all title information
 387          */
 388         /* Change the default area */
 389         p_input->stream.p_selected_area =
 390                     p_input->stream.pp_areas[p_area->i_id];
 391
 392         /* release the lock to to let the interface go */
 393 //        vlc_mutex_unlock( &p_input->stream.stream_lock );
 394
 395         /* title number: it is not vts nb!,
 396          * it is what appears in the interface list */
 397         p_dvd->i_title = p_area->i_id;
 398         p_dvd->p_ifo->i_title = p_dvd->i_title;
 399
 400         /* set number of chapters of current title */
 401         p_dvd->i_chapter_nb = p_area->i_part_nb;
 402
 403         /* ifo vts */
 404         if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
 405         {
 406             intf_ErrMsg( "dvd error: fatal error in vts ifo" );
 407             free( p_dvd );
 408             p_input->b_error = 1;
 409             return -1;
 410         }
 411
 412 #define vmg p_dvd->p_ifo->vmg
 413 #define vts p_dvd->p_ifo->vts
 414         /* title position inside the selected vts */
 415         i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
 416         p_dvd->i_title_id =
 417             vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
 418
 419         intf_WarnMsg( 3, "dvd: title %d vts_title %d pgc %d",
 420                         p_dvd->i_title,
 421                         i_vts_title,
 422                         p_dvd->i_title_id );
 423
 424         /* css title key for current vts */
 425         if( p_dvd->b_encrypted )
 426         {
 427             /* this one is vts number */
 428             p_dvd->p_css->i_title =
 429                     vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_set_num;
 430             p_dvd->p_css->i_title_pos =
 431                     vts.i_pos +
 432                     vts.manager_inf.i_title_vob_start_sector * DVD_LB_SIZE;
 433
 434             j = CSSGetKey( p_input->i_handle, p_dvd->p_css );
 435             if( j < 0 )
 436             {
 437                 intf_ErrMsg( "dvd error: fatal error in vts css key" );
 438                 free( p_dvd );
 439                 p_input->b_error = 1;
 440                 return -1;
 441             }
 442             else if( j > 0 )
 443             {
 444                 intf_ErrMsg( "dvd error: css decryption unavailable" );
 445                 free( p_dvd );
 446                 p_input->b_error = 1;
 447                 return -1;
 448             }
 449         }
 450
 451         /*
 452          * Angle management
 453          */
 454         p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
 455         p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 456         if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
 457         {
 458             p_dvd->i_angle = 1;
 459         }
 460
 461         /*
 462          * Set selected title start and size
 463          */
 464
 465         /* title set offset */
 466         p_dvd->i_title_start = vts.i_pos + DVD_LB_SIZE *
 467                       (off_t)( vts.manager_inf.i_title_vob_start_sector );
 468
 469         /* last video cell */
 470         p_dvd->i_cell = 0;
 471         p_dvd->i_prg_cell = -1 +
 472             vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
 473
 474         if( DVDFindCell( p_dvd ) < 0 )
 475         {
 476             intf_ErrMsg( "dvd error: can't find title end" );
 477             p_input->b_error = 1;
 478             return -1;
 479         }
 480
 481         /* temporary hack to fix size in some dvds */
 482         if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
 483         {
 484             p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
 485         }
 486
 487         p_dvd->i_sector = 0;
 488         p_dvd->i_size = DVD_LB_SIZE *
 489           (off_t)( vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 490         intf_WarnMsg( 2, "dvd info: stream size 1: %lld @ %d", p_dvd->i_size,
 491                       vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector );
 492
 493         if( DVDChapterSelect( p_dvd, 1 ) < 0 )
 494         {
 495             intf_ErrMsg( "dvd error: can't find first chapter" );
 496             p_input->b_error = 1;
 497             return -1;
 498         }
 499
 500         p_dvd->i_size -= (off_t)( p_dvd->i_sector + 1 ) *DVD_LB_SIZE;
 501
 502         IfoPrintTitle( p_dvd );
 503
 504 //        vlc_mutex_lock( &p_input->stream.stream_lock );
 505
 506         /* Area definition */
 507         p_input->stream.p_selected_area->i_start = p_dvd->i_start;
 508         p_input->stream.p_selected_area->i_size = p_dvd->i_size;
 509         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 510         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 511
 512         /*
 513          * Destroy obsolete ES by reinitializing program 0
 514          * and find all ES in title with ifo data
 515          */
 516         if( p_input->stream.pp_programs != NULL )
 517         {
 518             /* We don't use input_EndStream here since
 519              * we keep area structures */
 520
 521             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 522             {
 523                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 524             }
 525
 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         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_START;
 537
 538         p_es = NULL;
 539
 540         /* ES 0 -> video MPEG2 */
 541         IfoPrintVideo( p_dvd );
 542
 543         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 544         p_es->i_stream_id = 0xe0;
 545         p_es->i_type = MPEG2_VIDEO_ES;
 546         p_es->i_cat = VIDEO_ES;
 547         intf_WarnMsg( 1, "dvd info: video mpeg2 stream" );
 548         if( p_main->b_video )
 549         {
 550             input_SelectES( p_input, p_es );
 551         }
 552         intf_WarnMsg( 4, "dvd info: video selected" );
 553
 554 #define audio_status \
 555     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 556         /* Audio ES, in the order they appear in .ifo */
 557         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 558         {
 559             IfoPrintAudio( p_dvd, i );
 560
 561             /* audio channel is active if first byte is 0x80 */
 562             if( audio_status.i_available )
 563             {
 564                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 565                 {
 566                 case 0x00:              /* AC3 */
 567                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 568                     p_es = input_AddES( p_input,
 569                                p_input->stream.pp_programs[0], i_id, 0 );
 570                     p_es->i_stream_id = 0xbd;
 571                     p_es->i_type = AC3_AUDIO_ES;
 572                     p_es->b_audio = 1;
 573                     p_es->i_cat = AUDIO_ES;
 574                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 575                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 576                     strcat( p_es->psz_desc, " (ac3)" );
 577
 578                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 579                                   i, p_es->psz_desc, i_id );
 580
 581                     break;
 582                 case 0x02:
 583                 case 0x03:              /* MPEG audio */
 584                     i_id = 0xc0 + audio_status.i_position;
 585                     p_es = input_AddES( p_input,
 586                                     p_input->stream.pp_programs[0], i_id, 0 );
 587                     p_es->i_stream_id = i_id;
 588                     p_es->i_type = MPEG2_AUDIO_ES;
 589                     p_es->b_audio = 1;
 590                     p_es->i_cat = AUDIO_ES;
 591                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 592                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 593                     strcat( p_es->psz_desc, " (mpeg)" );
 594
 595                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 596                                   i, p_es->psz_desc, i_id );
 597
 598                     break;
 599                 case 0x04:              /* LPCM */
 600
 601                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 602                     p_es = input_AddES( p_input,
 603                                     p_input->stream.pp_programs[0], i_id, 0 );
 604                     p_es->i_stream_id = i_id;
 605                     p_es->i_type = LPCM_AUDIO_ES;
 606                     p_es->b_audio = 1;
 607                     p_es->i_cat = AUDIO_ES;
 608                     strcpy( p_es->psz_desc, IfoLanguage( hton16(
 609                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 610                     strcat( p_es->psz_desc, " (lpcm)" );
 611
 612                     intf_WarnMsg( 3, "dvd info: audio stream %d %s\t(0x%x)",
 613                                   i, p_es->psz_desc, i_id );
 614                     break;
 615                 case 0x06:              /* DTS */
 616                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 617                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 618                                  "(0x%x)", i_id );
 619                     break;
 620                 default:
 621                     i_id = 0;
 622                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 623                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 624                 }
 625             }
 626         }
 627 #undef audio_status
 628 #define spu_status \
 629     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 630
 631         /* Sub Picture ES */
 632
 633         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 634         {
 635             IfoPrintSpu( p_dvd, i );
 636
 637             if( spu_status.i_available )
 638             {
 639                 /*  there are several streams for one spu */
 640                 if(  vts.manager_inf.video_attr.i_ratio )
 641                 {
 642                     /* 16:9 */
 643                     switch( vts.manager_inf.video_attr.i_perm_displ )
 644                     {
 645                     case 1:
 646                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 647                                | 0xbd;
 648                         break;
 649                     case 2:
 650                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 651                                | 0xbd;
 652                         break;
 653                     default:
 654                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 655                                | 0xbd;
 656                         break;
 657                     }
 658                 }
 659                 else
 660                 {
 661                     /* 4:3 */
 662                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 663                            | 0xbd;
 664                 }
 665                 p_es = input_AddES( p_input,
 666                                     p_input->stream.pp_programs[0], i_id, 0 );
 667                 p_es->i_stream_id = 0xbd;
 668                 p_es->i_type = DVD_SPU_ES;
 669                 p_es->i_cat = SPU_ES;
 670                 strcpy( p_es->psz_desc, IfoLanguage( hton16(
 671                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 672                 intf_WarnMsg( 3, "dvd info: spu stream %d %s\t(0x%x)",
 673                               i, p_es->psz_desc, i_id );
 674             }
 675         }
 676 #undef spu_status
 677         if( p_main->b_audio )
 678         {
 679             /* For audio: first one if none or a not existing one specified */
 680             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 681             if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
 682             {
 683                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 684                 i_audio = 1;
 685             }
 686             if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
 687             {
 688                 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
 689             }
 690         }
 691
 692         if( p_main->b_video )
 693         {
 694             /* for spu, default is none */
 695             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 696             if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
 697             {
 698                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 699                 i_spu = 0;
 700             }
 701             if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
 702             {
 703                 i_spu += vts.manager_inf.i_audio_nb;
 704                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 705             }
 706         }
 707     } /* i_title >= 0 */
 708     else
 709     {
 710         p_area = p_input->stream.p_selected_area;
 711     }
 712 #undef vts
 713 #undef vmg
 714
 715     /*
 716      * Chapter selection
 717      */
 718
 719
 720     if( p_area->i_part != p_dvd->i_chapter )
 721     {
 722         if( ( p_area->i_part > 0 ) &&
 723             ( p_area->i_part <= p_area->i_part_nb ))
 724         {
 725             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 726             {
 727                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 728                 p_input->b_error = 1;
 729                 return -1;
 730             }
 731
 732             p_input->stream.p_selected_area->i_tell = p_dvd->i_start -
 733                                                       p_area->i_start;
 734             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 735
 736             intf_WarnMsg( 2, "dvd info: chapter %d start at: %lld",
 737                                         p_area->i_part, p_area->i_tell );
 738         }
 739         else
 740         {
 741             p_area->i_part = 1;
 742             p_dvd->i_chapter = 1;
 743         }
 744     }
 745
 746 #define title \
 747     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 748     if( p_area->i_angle != p_dvd->i_angle )
 749     {
 750         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 751         {
 752             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 753             {
 754                 p_dvd->i_cell = 0;
 755             }
 756             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 757             p_dvd->i_angle = p_area->i_angle;
 758
 759             DVDFindSector( p_dvd );
 760             p_dvd->i_cell += p_dvd->i_angle_cell;
 761         }
 762         else
 763         {
 764             p_dvd->i_angle = p_area->i_angle;
 765         }
 766
 767         intf_WarnMsg( 2, "dvd info: angle %d selected", p_area->i_angle );
 768     }
 769
 770     /* warn interface that something has changed */
 771     p_input->stream.b_seekable = 1;
 772     p_input->stream.b_changed = 1;
 773
 774     p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_REINIT;
 775
 776     return 0;
 777 }
 778
 779
 780 /*****************************************************************************
 781  * DVDRead: reads data packets into the netlist.
 782  *****************************************************************************
 783  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 784  * EOF.
 785  *****************************************************************************/
 786 static int DVDRead( input_thread_t * p_input,
 787                     data_packet_t ** pp_packets )
 788 {
 789     thread_dvd_data_t *     p_dvd;
 790     dvd_netlist_t *         p_netlist;
 791     struct iovec *          p_vec;
 792     struct data_packet_s *  pp_data[p_input->i_read_once];
 793     u8 *                    pi_cur;
 794     int                     i_block_once;
 795     int                     i_packet_size;
 796     int                     i_iovec;
 797     int                     i_packet;
 798     int                     i_pos;
 799     int                     i_read_bytes;
 800     int                     i_read_blocks;
 801     off_t                   i_off;
 802     boolean_t               b_eof;
 803     boolean_t               b_eot;
 804
 805     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 806     p_netlist = (dvd_netlist_t *)p_input->p_method_data;
 807
 808     /* Get an iovec pointer */
 809     if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
 810     {
 811         intf_ErrMsg( "dvd error: can't get iovec" );
 812         return -1;
 813     }
 814
 815     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 816
 817     /* Get the position of the next cell if we're at cell end */
 818     if( i_block_once <= 0 )
 819     {
 820         int     i_angle;
 821
 822         p_dvd->i_cell++;
 823         p_dvd->i_angle_cell++;
 824
 825         /* Find cell index in adress map */
 826         if( DVDFindSector( p_dvd ) < 0 )
 827         {
 828             pp_packets[0] = NULL;
 829             intf_ErrMsg( "dvd error: can't find next cell" );
 830             return 1;
 831         }
 832
 833         /* Position the fd pointer on the right address */
 834         i_off = lseek( p_dvd->i_fd,
 835                        p_dvd->i_title_start +
 836                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET );
 837
 838         /* update chapter : it will be easier when we have navigation
 839          * ES support */
 840         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 841         {
 842             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 843             {
 844                 i_angle = p_dvd->i_angle - 1;
 845             }
 846             else
 847             {
 848                 i_angle = 0;
 849             }
 850             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 851                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 852             {
 853                 p_dvd->i_chapter++;
 854             }
 855         }
 856
 857         vlc_mutex_lock( &p_input->stream.stream_lock );
 858
 859         p_input->stream.p_selected_area->i_tell = i_off -
 860                                     p_input->stream.p_selected_area->i_start;
 861         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 862
 863         /* the synchro has to be reinitialized when we change cell */
 864         p_input->stream.pp_programs[0]->i_synchro_state = SYNCHRO_REINIT;
 865
 866         vlc_mutex_unlock( &p_input->stream.stream_lock );
 867
 868         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 869     }
 870
 871     /* the number of blocks read is the maw between the requested
 872      * value and the leaving block in the cell */
 873     if( i_block_once > p_dvd->i_block_once )
 874     {
 875         i_block_once = p_dvd->i_block_once;
 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     /* Reads from DVD */
 882     i_read_bytes = readv( p_dvd->i_fd, p_vec, i_block_once );
 883     i_read_blocks = ( i_read_bytes + 0x7ff ) >> 11;
 884
 885     /* Update netlist indexes */
 886     DVDMviovec( p_netlist, i_read_blocks, pp_data );
 887
 888     /* Update global position */
 889     p_dvd->i_sector += i_read_blocks;
 890
 891     i_packet = 0;
 892
 893     /* Read headers to compute payload length */
 894     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 895     {
 896         if( p_dvd->b_encrypted )
 897         {
 898             CSSDescrambleSector( p_dvd->p_css->pi_title_key,
 899                                  p_vec[i_iovec].iov_base );
 900             ((u8*)(p_vec[i_iovec].iov_base))[0x14] &= 0x8F;
 901         }
 902
 903         i_pos = 0;
 904
 905         while( i_pos < p_netlist->i_buffer_size )
 906         {
 907             pi_cur = (u8*)(p_vec[i_iovec].iov_base + i_pos);
 908
 909             /*default header */
 910             if( U32_AT( pi_cur ) != 0x1BA )
 911             {
 912                 /* That's the case for all packets, except pack header. */
 913                 i_packet_size = U16_AT( pi_cur + 4 );
 914                 pp_packets[i_packet] = DVDNewPtr( p_netlist );
 915             }
 916             else
 917             {
 918                 /* Pack header. */
 919                 if( ( pi_cur[4] & 0xC0 ) == 0x40 )
 920                 {
 921                     /* MPEG-2 */
 922                     i_packet_size = 8;
 923                 }
 924                 else if( ( pi_cur[4] & 0xF0 ) == 0x20 )
 925                 {
 926                     /* MPEG-1 */
 927                     i_packet_size = 6;
 928                 }
 929                 else
 930                 {
 931                     intf_ErrMsg( "Unable to determine stream type" );
 932                     return( -1 );
 933                 }
 934
 935                 pp_packets[i_packet] = pp_data[i_iovec];
 936
 937             }
 938
 939             (*pp_data[i_iovec]->pi_refcount)++;
 940
 941             pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
 942
 943             pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 944
 945             pp_packets[i_packet]->p_payload_start =
 946                     pp_packets[i_packet]->p_buffer + i_pos;
 947
 948             pp_packets[i_packet]->p_payload_end =
 949                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 950
 951             pp_packets[i_packet]->p_next = NULL;
 952             pp_packets[i_packet]->b_discard_payload = 0;
 953
 954             i_packet++;
 955             i_pos += i_packet_size + 6;
 956         }
 957     }
 958
 959     pp_packets[i_packet] = NULL;
 960
 961     vlc_mutex_lock( &p_input->stream.stream_lock );
 962
 963     p_input->stream.p_selected_area->i_tell += i_read_bytes;
 964     b_eot = !( p_input->stream.p_selected_area->i_tell < p_dvd->i_size );
 965     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 966
 967     vlc_mutex_unlock( &p_input->stream.stream_lock );
 968
 969     if( b_eof )
 970     {
 971         return 1;
 972     }
 973
 974     if( b_eot )
 975     {
 976         intf_WarnMsg( 4, "dvd info: new title" );
 977         p_dvd->i_title++;
 978         vlc_mutex_lock( &p_input->stream.stream_lock );
 979         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 980         vlc_mutex_unlock( &p_input->stream.stream_lock );
 981         return 0;
 982     }
 983
 984     if( i_read_blocks == i_block_once )
 985     {
 986         return 0;
 987     }
 988
 989     return -1;
 990 }
 991
 992 /*****************************************************************************
 993  * DVDRewind : reads a stream backward
 994  *****************************************************************************/
 995 static int DVDRewind( input_thread_t * p_input )
 996 {
 997     return( -1 );
 998 }
 999
1000 /*****************************************************************************
1001  * DVDSeek : Goes to a given position on the stream.
1002  *****************************************************************************
1003  * This one is used by the input and translate chronological position from
1004  * input to logical position on the device.
1005  * The lock should be taken before calling this function.
1006  *****************************************************************************/
1007 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1008 {
1009     thread_dvd_data_t *     p_dvd;
1010     off_t                   i_pos;
1011     int                     i_prg_cell;
1012     int                     i_cell;
1013     int                     i_chapter;
1014     int                     i_angle;
1015
1016     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1017
1018     /* we have to take care of offset of beginning of title */
1019     i_pos = i_off + p_input->stream.p_selected_area->i_start
1020                   - p_dvd->i_title_start;
1021
1022     /* update navigation data */
1023     p_dvd->i_sector = i_pos >> 11;
1024
1025     i_prg_cell = 0;
1026     i_chapter = 0;
1027
1028     /* parse vobu address map to find program cell */
1029     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1030     {
1031         i_prg_cell++;
1032     }
1033
1034     p_dvd->i_prg_cell = i_prg_cell;
1035
1036     if( DVDChooseAngle( p_dvd ) < 0 )
1037     {
1038         p_input->b_error = 1;
1039         return;
1040     }
1041
1042     p_dvd->i_cell = 0;
1043
1044     /* Find first title cell which is inside program cell */
1045     if( DVDFindCell( p_dvd ) < 0 )
1046     {
1047         /* no following cell : we're at eof */
1048         intf_ErrMsg( "dvd error: cell seeking failed" );
1049         p_input->b_error = 1;
1050         return;
1051     }
1052
1053     i_cell = p_dvd->i_cell;
1054
1055 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1056     /* parse cell address map to find title cell containing sector */
1057     while( cell.i_end_sector < p_dvd->i_sector )
1058     {
1059         i_cell++;
1060     }
1061
1062     p_dvd->i_cell = i_cell;
1063
1064     /* if we're inside a multi-angle zone, we have to choose i_sector
1065      * in the current angle ; we can't do it all the time since cells
1066      * can be very wide out of such zones */
1067     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1068     {
1069         p_dvd->i_sector = MAX(
1070                 cell.i_start_sector,
1071                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1072     }
1073
1074     p_dvd->i_end_sector = MIN(
1075             cell.i_end_sector,
1076             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1077 #undef cell
1078     /* update chapter */
1079     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1080     {
1081         i_angle = p_dvd->i_angle - 1;
1082     }
1083     else
1084     {
1085         i_angle = 0;
1086     }
1087     while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1088                 ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1089            ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1090     {
1091         i_chapter++;
1092     }
1093
1094     p_dvd->i_chapter = i_chapter;
1095     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1096
1097     p_input->stream.p_selected_area->i_tell =
1098                 lseek( p_dvd->i_fd, p_dvd->i_title_start +
1099                        (off_t)( p_dvd->i_sector ) *DVD_LB_SIZE, SEEK_SET ) -
1100                 p_input->stream.p_selected_area->i_start;
1101 /*
1102     intf_WarnMsg( 3, "Program Cell: %d Cell: %d Chapter: %d",
1103                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1104 */
1105
1106     return;
1107 }
1108
1109 #define cell  p_dvd->p_ifo->vts.cell_inf
1110
1111 /*****************************************************************************
1112  * DVDFindCell: adjust the title cell index with the program cell
1113  *****************************************************************************/
1114 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1115 {
1116     int                 i_cell;
1117     int                 i_index;
1118
1119     i_cell = p_dvd->i_cell;
1120     i_index = p_dvd->i_prg_cell;
1121
1122     if( i_cell >= cell.i_cell_nb )
1123     {
1124         return -1;
1125     }
1126
1127     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1128                    cell.p_cell_map[i_cell].i_vob_id ) ||
1129       ( title.p_cell_pos[i_index].i_cell_id !=
1130                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1131            ( i_cell < cell.i_cell_nb - 1 ) )
1132     {
1133         i_cell++;
1134     }
1135
1136 /*
1137 intf_WarnMsg( 3, "FindCell: i_cell %d i_index %d found %d nb %d",
1138                     p_dvd->i_cell,
1139                     p_dvd->i_prg_cell,
1140                     i_cell,
1141                     cell.i_cell_nb );
1142 */
1143
1144     p_dvd->i_cell = i_cell;
1145
1146     return 0;
1147 }
1148
1149 #undef cell
1150
1151 /*****************************************************************************
1152  * DVDFindSector: find cell index in adress map from index in
1153  * information table program map and give corresponding sectors.
1154  *****************************************************************************/
1155 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1156 {
1157
1158     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1159     {
1160         p_dvd->i_prg_cell++;
1161
1162         if( DVDChooseAngle( p_dvd ) < 0 )
1163         {
1164             return -1;
1165         }
1166     }
1167
1168     if( DVDFindCell( p_dvd ) < 0 )
1169     {
1170         intf_ErrMsg( "dvd error: can't find sector" );
1171         return -1;
1172     }
1173
1174     /* Find start and end sectors of new cell */
1175 #if 1
1176     p_dvd->i_sector = MAX(
1177          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1178          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1179     p_dvd->i_end_sector = MIN(
1180          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1181          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1182 #else
1183     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1184     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1185 #endif
1186
1187 /*
1188     intf_WarnMsg( 3, "cell: %d sector1: 0x%x end1: 0x%x\n"
1189                    "index: %d sector2: 0x%x end2: 0x%x\n"
1190                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1191         p_dvd->i_cell,
1192         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1193         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1194         p_dvd->i_prg_cell,
1195         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1196         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1197         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1198         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1199         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1200 */
1201
1202     return 0;
1203 }
1204
1205 /*****************************************************************************
1206  * DVDChapterSelect: find the cell corresponding to requested chapter
1207  *****************************************************************************/
1208 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1209 {
1210
1211     /* Find cell index in Program chain for current chapter */
1212     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1213     p_dvd->i_cell = 0;
1214     p_dvd->i_sector = 0;
1215
1216     DVDChooseAngle( p_dvd );
1217
1218     /* Search for cell_index in cell adress_table and initialize
1219      * start sector */
1220     if( DVDFindSector( p_dvd ) < 0 )
1221     {
1222         intf_ErrMsg( "dvd error: can't select chapter" );
1223         return -1;
1224     }
1225
1226     /* start is : beginning of vts vobs + offset to vob x */
1227     p_dvd->i_start = p_dvd->i_title_start +
1228                          DVD_LB_SIZE * (off_t)( p_dvd->i_sector );
1229
1230     /* Position the fd pointer on the right address */
1231     p_dvd->i_start = lseek( p_dvd->i_fd, p_dvd->i_start, SEEK_SET );
1232
1233     p_dvd->i_chapter = i_chapter;
1234     return 0;
1235 }
1236
1237 /*****************************************************************************
1238  * DVDChooseAngle: select the cell corresponding to the selected angle
1239  *****************************************************************************/
1240 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1241 {
1242     /* basic handling of angles */
1243     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1244                     >> 12 ) )
1245     {
1246         /* we enter a muli-angle section */
1247         case 0x5:
1248             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1249             p_dvd->i_angle_cell = 0;
1250             break;
1251         /* we exit a multi-angle section */
1252         case 0x9:
1253         case 0xd:
1254             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1255             break;
1256     }
1257
1258     return 0;
1259 }
1260
1261 #undef title