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 1.96 2001/11/12 20:16:33 sam Exp $
  14  *
  15  * Author: Stéphane Borel <stef@via.ecp.fr>
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  30  *****************************************************************************/
  31
  32 #define MODULE_NAME dvd
  33 #include "modules_inner.h"
  34
  35 /*****************************************************************************
  36  * Preamble
  37  *****************************************************************************/
  38 #include "defs.h"
  39
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42
  43 #ifdef HAVE_UNISTD_H
  44 #   include <unistd.h>
  45 #endif
  46
  47 #include <fcntl.h>
  48 #include <sys/types.h>
  49 #include <string.h>
  50 #include <errno.h>
  51
  52 #ifdef STRNCASECMP_IN_STRINGS_H
  53 #   include <strings.h>
  54 #endif
  55
  56 #if defined( WIN32 )
  57 #   include <io.h>                                                 /* read() */
  58 #else
  59 #   include <sys/uio.h>                                      /* struct iovec */
  60 #endif
  61
  62 #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         if( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start, DVDCSS_SEEK_INI ) < 0 )
 486         {
 487             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 488             return -1;
 489         }
 490
 491         p_dvd->i_size -= p_dvd->i_sector + 1;
 492
 493         IfoPrintTitle( p_dvd );
 494
 495         /* Area definition */
 496         p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
 497         p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
 498         p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
 499         p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
 500
 501 #if 0
 502         /* start at the beginning of the title */
 503         /* FIXME: create a conf option to select whether to restart
 504          * title or not */
 505         p_input->stream.p_selected_area->i_tell = 0;
 506         p_input->stream.p_selected_area->i_part = 1;
 507 #endif
 508
 509         /*
 510          * Destroy obsolete ES by reinitializing program 0
 511          * and find all ES in title with ifo data
 512          */
 513         if( p_input->stream.pp_programs != NULL )
 514         {
 515             /* We don't use input_EndStream here since
 516              * we keep area structures */
 517
 518             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 519             {
 520                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 521             }
 522
 523             free( p_input->stream.pp_selected_es );
 524             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 525
 526             p_input->stream.pp_selected_es = NULL;
 527             p_input->stream.i_selected_es_number = 0;
 528         }
 529
 530         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 531
 532         /* No PSM to read in DVD mode, we already have all information */
 533         p_input->stream.pp_programs[0]->b_is_ok = 1;
 534
 535         p_es = NULL;
 536
 537         /* ES 0 -> video MPEG2 */
 538         IfoPrintVideo( p_dvd );
 539
 540         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 541         p_es->i_stream_id = 0xe0;
 542         p_es->i_type = MPEG2_VIDEO_ES;
 543         p_es->i_cat = VIDEO_ES;
 544         if( p_main->b_video )
 545         {
 546             input_SelectES( p_input, p_es );
 547         }
 548
 549 #define audio_status \
 550     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
 551         /* Audio ES, in the order they appear in .ifo */
 552         for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
 553         {
 554             IfoPrintAudio( p_dvd, i );
 555
 556             /* audio channel is active if first byte is 0x80 */
 557             if( audio_status.i_available )
 558             {
 559                 i_audio_nb++;
 560
 561                 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
 562                 {
 563                 case 0x00:              /* AC3 */
 564                     i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
 565                     p_es = input_AddES( p_input,
 566                                p_input->stream.pp_programs[0], i_id, 0 );
 567                     p_es->i_stream_id = 0xbd;
 568                     p_es->i_type = AC3_AUDIO_ES;
 569                     p_es->b_audio = 1;
 570                     p_es->i_cat = AUDIO_ES;
 571                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 572                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 573                     strcat( p_es->psz_desc, " (ac3)" );
 574
 575                     break;
 576                 case 0x02:
 577                 case 0x03:              /* MPEG audio */
 578                     i_id = 0xc0 + audio_status.i_position;
 579                     p_es = input_AddES( p_input,
 580                                     p_input->stream.pp_programs[0], i_id, 0 );
 581                     p_es->i_stream_id = i_id;
 582                     p_es->i_type = MPEG2_AUDIO_ES;
 583                     p_es->b_audio = 1;
 584                     p_es->i_cat = AUDIO_ES;
 585                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 586                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 587                     strcat( p_es->psz_desc, " (mpeg)" );
 588
 589                     break;
 590                 case 0x04:              /* LPCM */
 591
 592                     i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
 593                     p_es = input_AddES( p_input,
 594                                     p_input->stream.pp_programs[0], i_id, 0 );
 595                     p_es->i_stream_id = 0xbd;
 596                     p_es->i_type = LPCM_AUDIO_ES;
 597                     p_es->b_audio = 1;
 598                     p_es->i_cat = AUDIO_ES;
 599                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 600                         vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
 601                     strcat( p_es->psz_desc, " (lpcm)" );
 602
 603                     break;
 604                 case 0x06:              /* DTS */
 605                     i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
 606                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 607                                  "(0x%x)", i_id );
 608                     break;
 609                 default:
 610                     i_id = 0;
 611                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 612                              vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
 613                 }
 614             }
 615         }
 616 #undef audio_status
 617 #define spu_status \
 618     vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
 619
 620         /* Sub Picture ES */
 621
 622         for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
 623         {
 624             IfoPrintSpu( p_dvd, i );
 625
 626             if( spu_status.i_available )
 627             {
 628                 i_spu_nb++;
 629
 630                 /*  there are several streams for one spu */
 631                 if(  vts.manager_inf.video_attr.i_ratio )
 632                 {
 633                     /* 16:9 */
 634                     switch( vts.manager_inf.video_attr.i_perm_displ )
 635                     {
 636                     case 1:
 637                         i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
 638                                | 0xbd;
 639                         break;
 640                     case 2:
 641                         i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
 642                                | 0xbd;
 643                         break;
 644                     default:
 645                         i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
 646                                | 0xbd;
 647                         break;
 648                     }
 649                 }
 650                 else
 651                 {
 652                     /* 4:3 */
 653                     i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
 654                            | 0xbd;
 655                 }
 656                 p_es = input_AddES( p_input,
 657                                     p_input->stream.pp_programs[0], i_id, 0 );
 658                 p_es->i_stream_id = 0xbd;
 659                 p_es->i_type = DVD_SPU_ES;
 660                 p_es->i_cat = SPU_ES;
 661                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 662                     vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
 663             }
 664         }
 665 #undef spu_status
 666         if( p_main->b_audio )
 667         {
 668             /* For audio: first one if none or a not existing one specified */
 669             i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 670             if( i_audio < 0 || i_audio > i_audio_nb )
 671             {
 672                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 673                 i_audio = 1;
 674             }
 675             if( i_audio > 0 && i_audio_nb > 0 )
 676             {
 677                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 678                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 679                       REQUESTED_AC3 ) )
 680                 {
 681                     int     i_ac3 = i_audio;
 682                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 683                              AC3_AUDIO_ES ) && ( i_ac3 <=
 684                              vts.manager_inf.i_audio_nb ) )
 685                     {
 686                         i_ac3++;
 687                     }
 688                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 689                     {
 690                         input_SelectES( p_input,
 691                                         p_input->stream.pp_es[i_ac3] );
 692                     }
 693                 }
 694                 else
 695                 {
 696                     input_SelectES( p_input,
 697                                     p_input->stream.pp_es[i_audio] );
 698                 }
 699             }
 700         }
 701
 702         if( p_main->b_video )
 703         {
 704             /* for spu, default is none */
 705             i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 706             if( i_spu < 0 || i_spu > i_spu_nb )
 707             {
 708                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 709                 i_spu = 0;
 710             }
 711             if( i_spu > 0 && i_spu_nb > 0 )
 712             {
 713                 i_spu += vts.manager_inf.i_audio_nb;
 714                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 715             }
 716         }
 717     } /* i_title >= 0 */
 718     else
 719     {
 720         p_area = p_input->stream.p_selected_area;
 721     }
 722 #undef vts
 723 #undef vmg
 724
 725     /*
 726      * Chapter selection
 727      */
 728
 729     if( p_area->i_part != p_dvd->i_chapter )
 730     {
 731         if( ( p_area->i_part > 0 ) &&
 732             ( p_area->i_part <= p_area->i_part_nb ))
 733         {
 734             if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
 735             {
 736                 intf_ErrMsg( "dvd error: can't set chapter in area" );
 737                 p_input->b_error = 1;
 738                 return -1;
 739             }
 740
 741             p_input->stream.p_selected_area->i_tell =
 742                                    LB2OFF( p_dvd->i_start ) - p_area->i_start;
 743             p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 744
 745             intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
 746                                         p_area->i_part, p_area->i_tell );
 747         }
 748         else
 749         {
 750             p_area->i_part = 1;
 751             p_dvd->i_chapter = 1;
 752         }
 753     }
 754
 755 #define title \
 756     p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
 757     if( p_area->i_angle != p_dvd->i_angle )
 758     {
 759         if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 760         {
 761             if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
 762             {
 763                 p_dvd->i_cell = 0;
 764             }
 765             p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
 766             p_dvd->i_angle = p_area->i_angle;
 767
 768             DVDFindSector( p_dvd );
 769             p_dvd->i_cell += p_dvd->i_angle_cell;
 770         }
 771         else
 772         {
 773             p_dvd->i_angle = p_area->i_angle;
 774         }
 775
 776         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 777     }
 778
 779     /* warn interface that something has changed */
 780     p_input->stream.b_seekable = 1;
 781     p_input->stream.b_changed = 1;
 782
 783     return 0;
 784 }
 785
 786
 787 /*****************************************************************************
 788  * DVDRead: reads data packets into the netlist.
 789  *****************************************************************************
 790  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 791  * EOF.
 792  *****************************************************************************/
 793 static int DVDRead( input_thread_t * p_input,
 794                     data_packet_t ** pp_packets )
 795 {
 796     thread_dvd_data_t *     p_dvd;
 797     netlist_t *             p_netlist;
 798     struct iovec *          p_vec;
 799     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 800     u8 *                    pi_cur;
 801     int                     i_block_once;
 802     int                     i_packet_size;
 803     int                     i_iovec;
 804     int                     i_packet;
 805     int                     i_pos;
 806     int                     i_read_blocks;
 807     int                     i_sector;
 808     boolean_t               b_eof;
 809     boolean_t               b_eot;
 810     boolean_t               b_eoc;
 811
 812     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 813     p_netlist = (netlist_t *)p_input->p_method_data;
 814
 815     b_eoc = 0;
 816     i_sector = p_dvd->i_title_start + p_dvd->i_sector;
 817     i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 818
 819
 820     /* Get the position of the next cell if we're at cell end */
 821     if( i_block_once <= 0 )
 822     {
 823         int     i_angle;
 824
 825         p_dvd->i_cell++;
 826         p_dvd->i_angle_cell++;
 827
 828         /* Find cell index in adress map */
 829         if( DVDFindSector( p_dvd ) < 0 )
 830         {
 831             pp_packets[0] = NULL;
 832             intf_ErrMsg( "dvd error: can't find next cell" );
 833             return 1;
 834         }
 835
 836         /* Position the fd pointer on the right address */
 837         if( ( i_sector = dvdcss_seek( p_dvd->dvdhandle,
 838                                       p_dvd->i_title_start + p_dvd->i_sector,
 839                                       DVDCSS_SEEK_MPEG ) ) < 0 )
 840         {
 841             intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
 842             return -1;
 843         }
 844
 845         /* update chapter : it will be easier when we have navigation
 846          * ES support */
 847         if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
 848         {
 849             if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
 850             {
 851                 i_angle = p_dvd->i_angle - 1;
 852             }
 853             else
 854             {
 855                 i_angle = 0;
 856             }
 857             if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
 858                 ( p_dvd->i_prg_cell - i_angle + 1 ) )
 859             {
 860                 p_dvd->i_chapter++;
 861                 b_eoc = 1;
 862             }
 863         }
 864
 865         i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
 866     }
 867
 868     /* The number of blocks read is the max between the requested
 869      * value and the leaving block in the cell */
 870     if( i_block_once > p_dvd->i_block_once )
 871     {
 872         i_block_once = p_dvd->i_block_once;
 873     }
 874 /*
 875 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
 876 */
 877     p_netlist->i_read_once = i_block_once;
 878
 879     /* Get an iovec pointer */
 880     if( ( p_vec = input_NetlistGetiovec( p_netlist ) ) == NULL )
 881     {
 882         intf_ErrMsg( "dvd error: can't get iovec" );
 883         return -1;
 884     }
 885
 886     /* Reads from DVD */
 887     i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
 888                                   i_block_once, DVDCSS_READ_DECRYPT );
 889
 890     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 891      * need know the real number of blocks read */
 892     input_NetlistMviovec( p_netlist, i_read_blocks, pp_data );
 893
 894     /* Update global position */
 895     p_dvd->i_sector += i_read_blocks;
 896
 897     i_packet = 0;
 898
 899     /* Read headers to compute payload length */
 900     for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
 901     {
 902         i_pos = 0;
 903
 904         while( i_pos < p_netlist->i_buffer_size )
 905         {
 906             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 907
 908             /*default header */
 909             if( U32_AT( pi_cur ) != 0x1BA )
 910             {
 911                 /* That's the case for all packets, except pack header. */
 912                 i_packet_size = U16_AT( pi_cur + 4 );
 913                 pp_packets[i_packet] = input_NetlistNewPtr( p_netlist );
 914                 (*pp_data[i_iovec]->pi_refcount)++;
 915                 pp_packets[i_packet]->pi_refcount =
 916                     pp_data[i_iovec]->pi_refcount;
 917                 pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 918             }
 919             else
 920             {
 921                 /* MPEG-2 Pack header. */
 922                 i_packet_size = 8;
 923                 pp_packets[i_packet] = pp_data[i_iovec];
 924             }
 925
 926             pp_packets[i_packet]->p_payload_start =
 927                     pp_packets[i_packet]->p_buffer + i_pos;
 928
 929             pp_packets[i_packet]->p_payload_end =
 930                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 931
 932             i_packet++;
 933             i_pos += i_packet_size + 6;
 934         }
 935     }
 936
 937     pp_packets[i_packet] = NULL;
 938
 939     vlc_mutex_lock( &p_input->stream.stream_lock );
 940
 941     p_input->stream.p_selected_area->i_tell =
 942         LB2OFF( i_sector + i_read_blocks ) -
 943         p_input->stream.p_selected_area->i_start;
 944     if( b_eoc )
 945     {
 946         /* We modify i_part only at end of chapter not to erase
 947          * some modification from the interface */
 948         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 949     }
 950
 951     b_eot = !( p_input->stream.p_selected_area->i_tell
 952                   < p_input->stream.p_selected_area->i_size );
 953     b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
 954
 955     if( b_eof )
 956     {
 957         vlc_mutex_unlock( &p_input->stream.stream_lock );
 958         return 1;
 959     }
 960
 961     if( b_eot )
 962     {
 963         intf_WarnMsg( 4, "dvd info: new title" );
 964         p_dvd->i_title++;
 965         DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
 966         vlc_mutex_unlock( &p_input->stream.stream_lock );
 967         return 0;
 968     }
 969
 970     vlc_mutex_unlock( &p_input->stream.stream_lock );
 971
 972     if( i_read_blocks == i_block_once )
 973     {
 974         return 0;
 975     }
 976
 977     return -1;
 978 }
 979
 980 /*****************************************************************************
 981  * DVDRewind : reads a stream backward
 982  *****************************************************************************/
 983 static int DVDRewind( input_thread_t * p_input )
 984 {
 985     return( -1 );
 986 }
 987
 988 /*****************************************************************************
 989  * DVDSeek : Goes to a given position on the stream.
 990  *****************************************************************************
 991  * This one is used by the input and translate chronological position from
 992  * input to logical position on the device.
 993  * The lock should be taken before calling this function.
 994  *****************************************************************************/
 995 static void DVDSeek( input_thread_t * p_input, off_t i_off )
 996 {
 997     thread_dvd_data_t *     p_dvd;
 998     int                     i_block;
 999     int                     i_prg_cell;
1000     int                     i_cell;
1001     int                     i_chapter;
1002     int                     i_angle;
1003
1004     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1005
1006     /* we have to take care of offset of beginning of title */
1007     p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
1008                        - p_dvd->i_title_start;
1009
1010     i_prg_cell = 0;
1011     i_chapter = 0;
1012
1013     /* parse vobu address map to find program cell */
1014     while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector  )
1015     {
1016         i_prg_cell++;
1017     }
1018
1019     p_dvd->i_prg_cell = i_prg_cell;
1020
1021     if( DVDChooseAngle( p_dvd ) < 0 )
1022     {
1023         p_input->b_error = 1;
1024         return;
1025     }
1026
1027     p_dvd->i_cell = 0;
1028
1029     /* Find first title cell which is inside program cell */
1030     if( DVDFindCell( p_dvd ) < 0 )
1031     {
1032         /* no following cell : we're at eof */
1033         intf_ErrMsg( "dvd error: cell seeking failed" );
1034         p_input->b_error = 1;
1035         return;
1036     }
1037
1038     i_cell = p_dvd->i_cell;
1039
1040 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1041     /* parse cell address map to find title cell containing sector */
1042     while( cell.i_end_sector < p_dvd->i_sector )
1043     {
1044         i_cell++;
1045     }
1046
1047     p_dvd->i_cell = i_cell;
1048
1049     /* if we're inside a multi-angle zone, we have to choose i_sector
1050      * in the current angle ; we can't do it all the time since cells
1051      * can be very wide out of such zones */
1052     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1053     {
1054         p_dvd->i_sector = MAX(
1055                 cell.i_start_sector,
1056                 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1057     }
1058
1059     p_dvd->i_end_sector = MIN(
1060             cell.i_end_sector,
1061             title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1062 #undef cell
1063     /* update chapter */
1064     if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1065     {
1066         i_angle = p_dvd->i_angle - 1;
1067     }
1068     else
1069     {
1070         i_angle = 0;
1071     }
1072     if( p_dvd->i_chapter_nb > 1 )
1073     {
1074         while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1075                     ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1076                ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1077         {
1078             i_chapter++;
1079         }
1080     }
1081     else
1082     {
1083         i_chapter = 1;
1084     }
1085
1086     p_dvd->i_chapter = i_chapter;
1087     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1088
1089     if( ( i_block = dvdcss_seek( p_dvd->dvdhandle,
1090                                  p_dvd->i_title_start + p_dvd->i_sector,
1091                                  DVDCSS_SEEK_MPEG ) ) < 0 )
1092     {
1093         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1094         p_input->b_error = 1;
1095         return;
1096     }
1097
1098     p_input->stream.p_selected_area->i_tell =
1099         LB2OFF ( i_block ) - p_input->stream.p_selected_area->i_start;
1100
1101     intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1102                      p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1103
1104
1105     return;
1106 }
1107
1108 #define cell  p_dvd->p_ifo->vts.cell_inf
1109
1110 /*****************************************************************************
1111  * DVDFindCell: adjust the title cell index with the program cell
1112  *****************************************************************************/
1113 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1114 {
1115     int                 i_cell;
1116     int                 i_index;
1117
1118     i_cell = p_dvd->i_cell;
1119     i_index = p_dvd->i_prg_cell;
1120
1121     if( i_cell >= cell.i_cell_nb )
1122     {
1123         return -1;
1124     }
1125
1126     while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1127                    cell.p_cell_map[i_cell].i_vob_id ) ||
1128       ( title.p_cell_pos[i_index].i_cell_id !=
1129                    cell.p_cell_map[i_cell].i_cell_id ) ) &&
1130            ( i_cell < cell.i_cell_nb - 1 ) )
1131     {
1132         i_cell++;
1133     }
1134
1135 /*
1136 intf_WarnMsg( 12, "FindCell: i_cell %d i_index %d found %d nb %d",
1137                     p_dvd->i_cell,
1138                     p_dvd->i_prg_cell,
1139                     i_cell,
1140                     cell.i_cell_nb );
1141 */
1142
1143     p_dvd->i_cell = i_cell;
1144
1145     return 0;
1146 }
1147
1148 #undef cell
1149
1150 /*****************************************************************************
1151  * DVDFindSector: find cell index in adress map from index in
1152  * information table program map and give corresponding sectors.
1153  *****************************************************************************/
1154 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1155 {
1156
1157     if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1158     {
1159         p_dvd->i_prg_cell++;
1160
1161         if( DVDChooseAngle( p_dvd ) < 0 )
1162         {
1163             return -1;
1164         }
1165     }
1166
1167     if( DVDFindCell( p_dvd ) < 0 )
1168     {
1169         intf_ErrMsg( "dvd error: can't find sector" );
1170         return -1;
1171     }
1172
1173     /* Find start and end sectors of new cell */
1174 #if 1
1175     p_dvd->i_sector = MAX(
1176          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1177          title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1178     p_dvd->i_end_sector = MIN(
1179          p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1180          title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1181 #else
1182     p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1183     p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1184 #endif
1185
1186 /*
1187     intf_WarnMsg( 12, "cell: %d sector1: 0x%x end1: 0x%x\n"
1188                    "index: %d sector2: 0x%x end2: 0x%x\n"
1189                    "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1190         p_dvd->i_cell,
1191         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1192         p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1193         p_dvd->i_prg_cell,
1194         title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1195         title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1196         title.p_cell_play[p_dvd->i_prg_cell].i_category,
1197         title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1198         title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1199 */
1200
1201     return 0;
1202 }
1203
1204 /*****************************************************************************
1205  * DVDChapterSelect: find the cell corresponding to requested chapter
1206  *****************************************************************************/
1207 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1208 {
1209
1210     /* Find cell index in Program chain for current chapter */
1211     p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1212     p_dvd->i_cell = 0;
1213     p_dvd->i_sector = 0;
1214
1215     DVDChooseAngle( p_dvd );
1216
1217     /* Search for cell_index in cell adress_table and initialize
1218      * start sector */
1219     if( DVDFindSector( p_dvd ) < 0 )
1220     {
1221         intf_ErrMsg( "dvd error: can't select chapter" );
1222         return -1;
1223     }
1224
1225     /* start is : beginning of vts vobs + offset to vob x */
1226     p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1227
1228     /* Position the fd pointer on the right address */
1229     if( ( p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle,
1230                                         p_dvd->i_start,
1231                                         DVDCSS_SEEK_MPEG ) ) < 0 )
1232     {
1233         intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1234         return -1;
1235     }
1236
1237     p_dvd->i_chapter = i_chapter;
1238     return 0;
1239 }
1240
1241 /*****************************************************************************
1242  * DVDChooseAngle: select the cell corresponding to the selected angle
1243  *****************************************************************************/
1244 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1245 {
1246     /* basic handling of angles */
1247     switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1248                     >> 12 ) )
1249     {
1250         /* we enter a muli-angle section */
1251         case 0x5:
1252             p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1253             p_dvd->i_angle_cell = 0;
1254             break;
1255         /* we exit a multi-angle section */
1256         case 0x9:
1257         case 0xd:
1258             p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;
1259             break;
1260     }
1261
1262     return 0;
1263 }
1264
1265 #undef title