git.sesse.net Git - vlc/blob - plugins/dvdread/input_dvdread.c

   1 /*****************************************************************************
   2  * input_dvdread.c: DvdRead 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: libdvdread for ifo files and block reading.
   7  *****************************************************************************
   8  * Copyright (C) 2001 VideoLAN
   9  * $Id: input_dvdread.c,v 1.2 2001/11/28 15:08:05 massiot Exp $
  10  *
  11  * Author: Stéphane Borel <stef@via.ecp.fr>
  12  *
  13  * Some code taken form the play_title.c by Billy Biggs <vektor@dumbterm.net>
  14  * in libdvdread.
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  29  *****************************************************************************/
  30
  31 #define MODULE_NAME dvdread
  32 #include "modules_inner.h"
  33
  34 /*****************************************************************************
  35  * Preamble
  36  *****************************************************************************/
  37 #include "defs.h"
  38
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41
  42 #ifdef HAVE_UNISTD_H
  43 #   include <unistd.h>
  44 #endif
  45
  46 #include <fcntl.h>
  47 #include <sys/types.h>
  48 #include <string.h>
  49 #include <errno.h>
  50 #include <assert.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
  63 #include "config.h"
  64 #include "common.h"
  65 #include "intf_msg.h"
  66 #include "threads.h"
  67 #include "mtime.h"
  68 #include "iso_lang.h"
  69 #include "tests.h"
  70
  71 #if defined( WIN32 )
  72 #   include "input_iovec.h"
  73 #endif
  74
  75 #include "main.h"
  76
  77 #include "stream_control.h"
  78 #include "input_ext-intf.h"
  79 #include "input_ext-dec.h"
  80 #include "input_ext-plugins.h"
  81
  82 #include "input_dvdread.h"
  83
  84 #include "debug.h"
  85
  86 #include "modules.h"
  87 #include "modules_export.h"
  88
  89 /* how many blocks DVDRead will read in each loop */
  90 #define DVD_BLOCK_READ_ONCE 64
  91 #define DVD_DATA_READ_ONCE  (4 * DVD_BLOCK_READ_ONCE)
  92
  93 /* Size of netlist */
  94 #define DVD_NETLIST_SIZE    512
  95
  96 /*****************************************************************************
  97  * Local prototypes
  98  *****************************************************************************/
  99 /* called from outside */
 100 static int  DvdReadProbe    ( probedata_t *p_data );
 101 static void DvdReadInit     ( struct input_thread_s * );
 102 static void DvdReadEnd      ( struct input_thread_s * );
 103 static void DvdReadOpen     ( struct input_thread_s * );
 104 static void DvdReadClose    ( struct input_thread_s * );
 105 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
 106 static int  DvdReadRead     ( struct input_thread_s *, data_packet_t ** );
 107 static void DvdReadSeek     ( struct input_thread_s *, off_t );
 108 static int  DvdReadRewind   ( struct input_thread_s * );
 109
 110 /* called only from here */
 111 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
 112 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
 113
 114 /*****************************************************************************
 115  * Functions exported as capabilities. They are declared as static so that
 116  * we don't pollute the namespace too much.
 117  *****************************************************************************/
 118 void _M( input_getfunctions )( function_list_t * p_function_list )
 119 {
 120 #define input p_function_list->functions.input
 121     p_function_list->pf_probe = DvdReadProbe;
 122     input.pf_init             = DvdReadInit;
 123     input.pf_open             = DvdReadOpen;
 124     input.pf_close            = DvdReadClose;
 125     input.pf_end              = DvdReadEnd;
 126     input.pf_init_bit_stream  = InitBitstream;
 127     input.pf_read             = DvdReadRead;
 128     input.pf_set_area         = DvdReadSetArea;
 129     input.pf_demux            = input_DemuxPS;
 130     input.pf_new_packet       = input_NetlistNewPacket;
 131     input.pf_new_pes          = input_NetlistNewPES;
 132     input.pf_delete_packet    = input_NetlistDeletePacket;
 133     input.pf_delete_pes       = input_NetlistDeletePES;
 134     input.pf_rewind           = DvdReadRewind;
 135     input.pf_seek             = DvdReadSeek;
 136 #undef input
 137 }
 138
 139 /*
 140  * Data reading functions
 141  */
 142
 143 /*****************************************************************************
 144  * DvdReadProbe: verifies that the stream is a PS stream
 145  *****************************************************************************/
 146 static int DvdReadProbe( probedata_t *p_data )
 147 {
 148     input_thread_t * p_input = (input_thread_t *)p_data;
 149
 150     char * psz_name = p_input->p_source;
 151     int i_score = 5;
 152
 153     if( TestMethod( INPUT_METHOD_VAR, "dvdread" ) )
 154     {
 155         return( 999 );
 156     }
 157
 158     if( ( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ) )
 159     {
 160         /* If the user specified "dvdread:" then he probably wants
 161          * to use libdvdread */
 162         i_score = 100;
 163         psz_name += 4;
 164     }
 165
 166     return( i_score );
 167 }
 168
 169 /*****************************************************************************
 170  * DvdReadInit: initializes DVD structures
 171  *****************************************************************************/
 172 static void DvdReadInit( input_thread_t * p_input )
 173 {
 174     thread_dvd_data_t *  p_dvd;
 175     input_area_t *       p_area;
 176     int                  i_title;
 177     int                  i_chapter;
 178     int                  i;
 179
 180     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 181     if( p_dvd == NULL )
 182     {
 183         intf_ErrMsg( "dvdread error: out of memory" );
 184         p_input->b_error = 1;
 185         return;
 186     }
 187
 188     /* we take the pointer to dvd_reader_t back  */
 189     p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
 190     p_dvd->p_title = NULL;
 191     p_dvd->p_vts_file = NULL;
 192
 193     p_input->p_plugin_data = (void *)p_dvd;
 194     p_input->p_method_data = NULL;
 195
 196     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 197      * DVD_DATA_READ_ONCE at most */
 198     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 199     /* this value mustn't be modifed */
 200     p_input->i_read_once = DVD_DATA_READ_ONCE;
 201
 202     /* Reading structures initialisation */
 203     input_NetlistInit( p_input,  DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
 204                    DVD_NETLIST_SIZE, DVD_VIDEO_LB_LEN, p_dvd->i_block_once );
 205     intf_WarnMsg( 2, "dvdread info: netlist initialized" );
 206
 207     /* Ifo allocation & initialisation */
 208     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 209     {
 210         intf_ErrMsg( "dvdread error: can't open VMG info" );
 211         DVDClose( p_dvd->p_dvdread );
 212         free( p_dvd );
 213         p_input->b_error = 1;
 214         return;
 215     }
 216     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 217
 218     /* Set stream and area data */
 219     vlc_mutex_lock( &p_input->stream.stream_lock );
 220
 221     /* Initialize ES structures */
 222     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 223
 224     /* disc input method */
 225     p_input->stream.i_method = INPUT_METHOD_DVD;
 226
 227 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 228     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 229
 230 #define area p_input->stream.pp_areas
 231     /* We start from 1 here since the default area 0
 232      * is reserved for video_ts.vob */
 233     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 234     {
 235         input_AddArea( p_input );
 236
 237         /* Titles are Program Chains */
 238         area[i]->i_id = i;
 239
 240         /* Absolute start offset and size
 241          * We can only set that with vts ifo, so we do it during the
 242          * first call to DVDSetArea */
 243         area[i]->i_start = 0;
 244         area[i]->i_size = 0;
 245
 246         /* Number of chapters */
 247         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 248         area[i]->i_part = 1;
 249
 250         /* Number of angles */
 251         area[i]->i_angle_nb = 0;
 252         area[i]->i_angle = 1;
 253
 254         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 255     }
 256 #undef area
 257
 258     /* Get requested title - if none try the first title */
 259     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 260     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 261     {
 262         i_title = 1;
 263     }
 264
 265 #undef tt_srpt
 266
 267     /* Get requested chapter - if none defaults to first one */
 268     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 269     if( i_chapter <= 0 )
 270     {
 271         i_chapter = 1;
 272     }
 273
 274     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 275
 276     p_area = p_input->stream.pp_areas[i_title];
 277
 278     /* set title, chapter, audio and subpic */
 279     DvdReadSetArea( p_input, p_area );
 280
 281     vlc_mutex_unlock( &p_input->stream.stream_lock );
 282
 283     return;
 284 }
 285
 286 /*****************************************************************************
 287  * DvdReadOpen: open libdvdread
 288  *****************************************************************************/
 289 static void DvdReadOpen( struct input_thread_s *p_input )
 290 {
 291     dvd_reader_t    *p_dvdread;
 292
 293     vlc_mutex_lock( &p_input->stream.stream_lock );
 294
 295     /* If we are here we can control the pace... */
 296     p_input->stream.b_pace_control = 1;
 297
 298     p_input->stream.b_seekable = 1;
 299     p_input->stream.p_selected_area->i_size = 0;
 300
 301     p_input->stream.p_selected_area->i_tell = 0;
 302
 303     vlc_mutex_unlock( &p_input->stream.stream_lock );
 304
 305     /* XXX: put this shit in an access plugin */
 306     if( strlen( p_input->p_source ) > 8
 307          && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
 308     {
 309         p_dvdread = DVDOpen( p_input->p_source + 8 );
 310     }
 311     else
 312     {
 313         p_dvdread = DVDOpen( p_input->p_source );
 314     }
 315
 316     if( ! p_dvdread )
 317     {
 318         p_input->b_error = 1;
 319         return;
 320     }
 321
 322     /* the vlc input doesn't handle the file descriptor with libdvdread */
 323     p_input->i_handle = -1;
 324
 325     /* p_dvdread is stored in p_plugin_data until we have
 326      * malloc'ed a dvd_thread_data_t */
 327     p_input->p_plugin_data = (void *) p_dvdread;
 328 }
 329
 330 /*****************************************************************************
 331  * DvdReadClose: close libdvdread
 332  *****************************************************************************/
 333 static void DvdReadClose( struct input_thread_s *p_input )
 334 {
 335     DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
 336     free( p_input->p_plugin_data );
 337     p_input->p_plugin_data = NULL;
 338
 339 }
 340
 341 /*****************************************************************************
 342  * DvdReadEnd: frees unused data
 343  *****************************************************************************/
 344 static void DvdReadEnd( input_thread_t * p_input )
 345 {
 346     thread_dvd_data_t *     p_dvd;
 347
 348     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 349
 350     /* close libdvdread */
 351     DVDCloseFile( p_dvd->p_title );
 352     ifoClose( p_dvd->p_vts_file );
 353     ifoClose( p_dvd->p_vmg_file );
 354
 355     /* Close netlist */
 356     input_NetlistEnd( p_input );
 357     p_input->p_method_data = NULL;
 358 }
 359
 360 #define p_pgc         p_dvd->p_cur_pgc
 361
 362 /*****************************************************************************
 363  * DvdReadSetArea: initialize input data for title x, chapter y.
 364  * It should be called for each user navigation request.
 365  *****************************************************************************
 366  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 367  * Note that you have to take the lock before entering here.
 368  *****************************************************************************/
 369 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 370 {
 371     thread_dvd_data_t *  p_dvd;
 372     int                  pgc_id = 0;
 373     int                  pgn = 0;
 374
 375     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 376
 377     /* we can't use the interface slider until initilization is complete */
 378     p_input->stream.b_seekable = 0;
 379
 380     if( p_area != p_input->stream.p_selected_area )
 381     {
 382         es_descriptor_t *    p_es;
 383         int                  i_cell = 0;
 384         int                  i_audio_nb = 0;
 385         int                  i_spu_nb = 0;
 386         int                  i;
 387
 388 #define p_vmg         p_dvd->p_vmg_file
 389 #define p_vts         p_dvd->p_vts_file
 390         if( p_dvd->p_title != NULL )
 391         {
 392             DVDCloseFile( p_dvd->p_title );
 393         }
 394
 395         if( p_vts != NULL )
 396         {
 397             ifoClose( p_vts );
 398         }
 399
 400         /* Reset the Chapter position of the old title */
 401         p_input->stream.p_selected_area->i_part = 1;
 402
 403         /*
 404          *  We have to load all title information
 405          */
 406         /* Change the default area */
 407         p_input->stream.p_selected_area = p_area;
 408
 409         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 410             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 411             p_area->i_id );
 412
 413         /* ifo vts */
 414         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 415                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 416         {
 417             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 418             ifoClose( p_vmg );
 419             DVDClose( p_dvd->p_dvdread );
 420             p_input->b_error = 1;
 421             return -1;
 422         }
 423
 424         /* title position inside the selected vts */
 425         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 426
 427         /*
 428          * Set selected title start
 429          */
 430         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 431         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 432         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 433         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 434
 435         p_area->i_start =
 436             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 437
 438         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 439                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 440
 441         /*
 442          * Find title end
 443          */
 444         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 445
 446         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 447         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 448
 449         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 450                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 451
 452         /*
 453          * Set properties for current chapter
 454          */
 455         /* Remeber current chapter */
 456         p_dvd->i_chapter = p_area->i_part;
 457         p_dvd->b_eoc = 0;
 458
 459         pgc_id = p_vts->vts_ptt_srpt->title[
 460                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 461         pgn = p_vts->vts_ptt_srpt->title[
 462                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 463
 464         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 465         p_dvd->i_pack_len = 0;
 466         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 467         DvdReadFindCell( p_dvd );
 468
 469         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 470             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 471
 472         /*
 473          * Angle management
 474          */
 475         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 476         p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 477
 478         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 479         {
 480             p_area->i_angle = 1;
 481         }
 482         p_dvd->i_angle = p_area->i_angle;
 483         p_dvd->i_angle_nb = p_area->i_angle_nb;
 484
 485         /*
 486          * We've got enough info, time to open the title set data.
 487          */
 488         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 489             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 490             DVD_READ_TITLE_VOBS ) ) )
 491         {
 492             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 493                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 494             ifoClose( p_vts );
 495             ifoClose( p_vmg );
 496             DVDClose( p_dvd->p_dvdread );
 497             return -1;
 498         }
 499
 500 //        IfoPrintTitle( p_dvd );
 501
 502         /*
 503          * Destroy obsolete ES by reinitializing program 0
 504          * and find all ES in title with ifo data
 505          */
 506         if( p_input->stream.pp_programs != NULL )
 507         {
 508             /* We don't use input_EndStream here since
 509              * we keep area structures */
 510
 511             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 512             {
 513                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 514             }
 515
 516             free( p_input->stream.pp_selected_es );
 517             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 518
 519             p_input->stream.pp_selected_es = NULL;
 520             p_input->stream.i_selected_es_number = 0;
 521         }
 522
 523         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 524
 525         /* No PSM to read in DVD mode, we already have all information */
 526         p_input->stream.pp_programs[0]->b_is_ok = 1;
 527
 528         p_es = NULL;
 529
 530         /* ES 0 -> video MPEG2 */
 531 //        IfoPrintVideo( p_dvd );
 532
 533         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 534         p_es->i_stream_id = 0xe0;
 535         p_es->i_type = MPEG2_VIDEO_ES;
 536         p_es->i_cat = VIDEO_ES;
 537         if( p_main->b_video )
 538         {
 539             input_SelectES( p_input, p_es );
 540         }
 541
 542 #define audio_control \
 543     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 544         /* Audio ES, in the order they appear in .ifo */
 545         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 546         {
 547             int i_position = 0;
 548             u16 i_id;
 549
 550 //            IfoPrintAudio( p_dvd, i );
 551
 552             /* audio channel is active if first byte is 0x80 */
 553             if( audio_control & 0x8000 )
 554             {
 555                 i_audio_nb++;
 556                 i_position = ( audio_control & 0x7F00 ) >> 8;
 557
 558             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 559                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 560                 {
 561                 case 0x00:              /* AC3 */
 562                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 563                     p_es = input_AddES( p_input,
 564                                p_input->stream.pp_programs[0], i_id, 0 );
 565                     p_es->i_stream_id = 0xbd;
 566                     p_es->i_type = AC3_AUDIO_ES;
 567                     p_es->b_audio = 1;
 568                     p_es->i_cat = AUDIO_ES;
 569                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 570                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 571                     strcat( p_es->psz_desc, " (ac3)" );
 572
 573                     break;
 574                 case 0x02:
 575                 case 0x03:              /* MPEG audio */
 576                     i_id = 0xc0 + i_position;
 577                     p_es = input_AddES( p_input,
 578                                     p_input->stream.pp_programs[0], i_id, 0 );
 579                     p_es->i_stream_id = i_id;
 580                     p_es->i_type = MPEG2_AUDIO_ES;
 581                     p_es->b_audio = 1;
 582                     p_es->i_cat = AUDIO_ES;
 583                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 584                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 585                     strcat( p_es->psz_desc, " (mpeg)" );
 586
 587                     break;
 588                 case 0x04:              /* LPCM */
 589
 590                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 591                     p_es = input_AddES( p_input,
 592                                     p_input->stream.pp_programs[0], i_id, 0 );
 593                     p_es->i_stream_id = i_id;
 594                     p_es->i_type = LPCM_AUDIO_ES;
 595                     p_es->b_audio = 1;
 596                     p_es->i_cat = AUDIO_ES;
 597                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 598                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 599                     strcat( p_es->psz_desc, " (lpcm)" );
 600
 601                     break;
 602                 case 0x06:              /* DTS */
 603                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 604                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 605                                  "(0x%x)", i_id );
 606                     break;
 607                 default:
 608                     i_id = 0;
 609                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 610                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 611                 }
 612             }
 613         }
 614 #undef audio_control
 615 #define spu_control \
 616     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 617
 618         /* Sub Picture ES */
 619
 620         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 621         {
 622             int i_position = 0;
 623             u16 i_id;
 624
 625 //            IfoPrintSpu( p_dvd, i );
 626             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 627
 628             if( spu_control & 0x80000000 )
 629             {
 630                 i_spu_nb++;
 631
 632                 /*  there are several streams for one spu */
 633                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 634                 {
 635                     /* 16:9 */
 636                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 637                     {
 638                     case 1:
 639                         i_position = spu_control & 0xff;
 640                         break;
 641                     case 2:
 642                         i_position = ( spu_control >> 8 ) & 0xff;
 643                         break;
 644                     default:
 645                         i_position = ( spu_control >> 16 ) & 0xff;
 646                         break;
 647                     }
 648                 }
 649                 else
 650                 {
 651                     /* 4:3 */
 652                     i_position = ( spu_control >> 24 ) & 0x7F;
 653                 }
 654
 655                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 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                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 663             }
 664         }
 665 #undef spu_control
 666         if( p_main->b_audio )
 667         {
 668             /* For audio: first one if none or a not existing one specified */
 669             int 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                              p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
 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             int 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 += p_vts->vtsi_mat->nr_of_vts_audio_streams;
 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
 723     /*
 724      * Chapter selection
 725      */
 726
 727     if( p_area->i_part != p_dvd->i_chapter )
 728     {
 729         if( ( p_area->i_part > 0 ) &&
 730             ( p_area->i_part <= p_area->i_part_nb ))
 731         {
 732             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 733             pgc_id = p_vts->vts_ptt_srpt->title[
 734                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 735             pgn = p_vts->vts_ptt_srpt->title[
 736                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 737
 738             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 739
 740             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 741             p_dvd->i_chapter = p_area->i_part;
 742             DvdReadFindCell( p_dvd );
 743
 744             p_dvd->i_pack_len = 0;
 745             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 746                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 747         }
 748         else
 749         {
 750             p_area->i_part = p_dvd->i_chapter;
 751         }
 752     }
 753 #undef p_vts
 754 #undef p_vmg
 755
 756     if( p_area->i_angle != p_dvd->i_angle )
 757     {
 758         p_dvd->i_angle = p_area->i_angle;
 759
 760         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 761     }
 762     /* warn interface that something has changed */
 763     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 764     p_input->stream.b_seekable = 1;
 765     p_input->stream.b_changed = 1;
 766
 767     return 0;
 768 }
 769
 770
 771 /*****************************************************************************
 772  * DvdReadRead: reads data packets into the netlist.
 773  *****************************************************************************
 774  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 775  * EOF.
 776  *****************************************************************************/
 777 static int DvdReadRead( input_thread_t * p_input,
 778                         data_packet_t ** pp_packets )
 779 {
 780     thread_dvd_data_t *     p_dvd;
 781     netlist_t *             p_netlist;
 782     u8                      p_data[DVD_VIDEO_LB_LEN];
 783     struct iovec *          p_vec;
 784     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 785     u8 *                    pi_cur;
 786     int                     i_blocks;
 787     int                     i_read;
 788     int                     i_iovec;
 789     int                     i_packet_size;
 790     int                     i_packet;
 791     int                     i_pos;
 792
 793     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 794     p_netlist = (netlist_t *)p_input->p_method_data;
 795
 796     /*
 797      * Playback by cell in this pgc, starting at the cell for our chapter.
 798      */
 799
 800     /*
 801      * End of pack, we select the following one
 802      */
 803     if( ! p_dvd->i_pack_len )
 804     {
 805         /*
 806          * Read NAV packet.
 807          */
 808         if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 809                        1, p_data ) ) != 1 )
 810         {
 811             intf_ErrMsg( "dvdread error: read failed for block %d",
 812                          p_dvd->i_next_vobu );
 813             return -1;
 814         }
 815
 816         assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
 817
 818         /*
 819          * Parse the contained dsi packet.
 820          */
 821
 822         DvdReadHandleDSI( p_dvd, p_data );
 823
 824         /* End of File */
 825         if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 826         {
 827             return 1;
 828         }
 829
 830         assert( p_dvd->i_pack_len < 1024 );
 831         /* Ugly kludge: we send the pack block to the input for it
 832          * sometimes has a zero scr and restart the sync */
 833 //        p_dvd->i_cur_block ++;
 834         p_dvd->i_pack_len++;
 835
 836     }
 837
 838     /*
 839      * Compute the number of blocks to read
 840      */
 841     i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
 842              ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
 843     p_dvd->i_pack_len -= i_blocks;
 844     p_netlist->i_read_once = i_blocks;
 845
 846     /* Get an iovec pointer */
 847     if( ( p_vec = input_NetlistGetiovec( p_netlist ) ) == NULL )
 848     {
 849         intf_ErrMsg( "dvdread error: can't get iovec" );
 850         return -1;
 851     }
 852
 853     /* Reads from DVD */
 854     i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 855                              i_blocks, p_vec );
 856     if( i_read != i_blocks )
 857     {
 858         intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 859                      i_read, i_blocks, p_dvd->i_cur_block );
 860         return -1;
 861     }
 862
 863     p_dvd->i_cur_block += i_read;
 864 /*
 865     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 866 */
 867     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 868      * need know the real number of blocks read */
 869     input_NetlistMviovec( p_netlist, i_read, pp_data );
 870
 871     i_packet = 0;
 872
 873     /* Read headers to compute payload length */
 874     for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
 875     {
 876         i_pos = 0;
 877
 878         while( i_pos < p_netlist->i_buffer_size )
 879         {
 880             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 881
 882             /*default header */
 883             if( U32_AT( pi_cur ) != 0x1BA )
 884             {
 885                 /* That's the case for all packets, except pack header. */
 886                 i_packet_size = U16_AT( pi_cur + 4 );
 887                 pp_packets[i_packet] = input_NetlistNewPtr( p_netlist );
 888                 (*pp_data[i_iovec]->pi_refcount)++;
 889                 pp_packets[i_packet]->pi_refcount =
 890                     pp_data[i_iovec]->pi_refcount;
 891                 pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 892             }
 893             else
 894             {
 895                 /* MPEG-2 Pack header. */
 896                 i_packet_size = 8;
 897                 pp_packets[i_packet] = pp_data[i_iovec];
 898
 899             }
 900
 901             pp_packets[i_packet]->p_payload_start =
 902                     pp_packets[i_packet]->p_buffer + i_pos;
 903
 904             pp_packets[i_packet]->p_payload_end =
 905                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 906
 907             pp_packets[i_packet]->p_next = NULL;
 908             pp_packets[i_packet]->b_discard_payload = 0;
 909
 910             i_packet++;
 911             i_pos += i_packet_size + 6;
 912         }
 913     }
 914
 915     pp_packets[i_packet] = NULL;
 916
 917     vlc_mutex_lock( &p_input->stream.stream_lock );
 918
 919     p_input->stream.p_selected_area->i_tell =
 920         LB2OFF( p_dvd->i_cur_block ) -
 921             p_input->stream.p_selected_area->i_start;
 922
 923     if( p_dvd->b_eoc )
 924     {
 925         /* We modify i_part only at end of chapter not to erase
 926          * some modification from the interface */
 927         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 928         p_dvd->b_eoc = 0;
 929     }
 930
 931
 932     vlc_mutex_unlock( &p_input->stream.stream_lock );
 933
 934     return 0;
 935 }
 936 #undef p_pgc
 937
 938 /*****************************************************************************
 939  * DVDRewind : reads a stream backward
 940  *****************************************************************************/
 941 static int DvdReadRewind( input_thread_t * p_input )
 942 {
 943     return( -1 );
 944 }
 945
 946 /*****************************************************************************
 947  * DvdReadSeek : Goes to a given position on the stream.
 948  *****************************************************************************
 949  * This one is used by the input and translate chronological position from
 950  * input to logical position on the device.
 951  * The lock should be taken before calling this function.
 952  *****************************************************************************/
 953 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 954 {
 955     thread_dvd_data_t *     p_dvd;
 956     int                     i_lb;
 957     int                     i_tmp;
 958     int                     i_chapter = 0;
 959     int                     i_cell = 0;
 960     int                     i_vobu = 0;
 961     int                     i_sub_cell = 0;
 962
 963     i_off += p_input->stream.p_selected_area->i_start;
 964     i_lb = OFF2LB( i_off );
 965     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 966
 967     /* find cell */
 968     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 969     {
 970         i_cell++;
 971     }
 972
 973     /* find chapter */
 974     do
 975     {
 976         pgc_t *     p_pgc;
 977         int         pgc_id, pgn;
 978
 979         i_chapter++;
 980         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
 981                     p_dvd->i_ttn-1].ptt[i_chapter].pgcn;
 982         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
 983                     p_dvd->i_ttn-1].ptt[i_chapter].pgn;
 984
 985         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 986         i_tmp = p_pgc->program_map[pgn-1];
 987
 988     } while( i_tmp <= i_cell );
 989
 990     /* find vobu */
 991     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
 992             <= i_lb )
 993     {
 994         i_vobu++;
 995     }
 996
 997     /* find sub_cell */
 998     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
 999             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1000     {
1001         i_sub_cell++;
1002     }
1003
1004 /*
1005     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1006             i_cell, i_sub_cell,i_chapter, i_vobu,
1007             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1008             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1009             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1010 */
1011     p_dvd->i_cur_block = i_lb;
1012     p_dvd->i_next_vobu =
1013         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1014     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1015     p_dvd->i_cur_cell = i_cell;
1016     p_dvd->i_chapter = i_chapter;
1017     DvdReadFindCell( p_dvd );
1018
1019     p_input->stream.p_selected_area->i_tell =
1020         LB2OFF ( p_dvd->i_cur_block )
1021          - p_input->stream.p_selected_area->i_start;
1022     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1023
1024     return;
1025 }
1026
1027 /*****************************************************************************
1028  * DvdReadHandleDSI
1029  *****************************************************************************/
1030 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1031 {
1032     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1033
1034     /*
1035      * Determine where we go next.  These values are the ones we mostly
1036      * care about.
1037      */
1038     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1039
1040     /*
1041      * If we're not at the end of this cell, we can determine the next
1042      * VOBU to display using the VOBU_SRI information section of the
1043      * DSI.  Using this value correctly follows the current angle,
1044      * avoiding the doubled scenes in The Matrix, and makes our life
1045      * really happy.
1046      */
1047     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1048     {
1049 #if 1
1050         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1051         {
1052             case 0x4:
1053                 /* interleaved unit with no angle */
1054                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1055                 {
1056                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1057                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1058                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1059                 }
1060                 else
1061                 {
1062                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1063                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1064                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1065                 }
1066                 break;
1067             case 0x5:
1068                 /* vobu is end of ilvu */
1069                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1070                 {
1071                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1072                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1073                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1074
1075                     break;
1076                 }
1077             case 0x6:
1078                 /* vobu is beginning of ilvu */
1079             case 0x9:
1080                 /* next scr is 0 */
1081             case 0xa:
1082                 /* entering interleaved section */
1083             case 0x8:
1084                 /* non interleaved cells in interleaved section */
1085             default:
1086                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1087                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1088                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1089                 break;
1090         }
1091 #else
1092         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1093             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1094         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1095 #endif
1096     }
1097     else
1098     {
1099         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1100         DvdReadFindCell( p_dvd );
1101
1102         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1103         p_dvd->i_next_vobu =
1104             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1105     }
1106
1107 #if 0
1108     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1109             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1110             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1111             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1112             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1113             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1114
1115     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1116             p_dvd->dsi_pack.sml_pbi.category,
1117             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1118             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1119             p_dvd->dsi_pack.sml_pbi.size );
1120
1121     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1122             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1123             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1124             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1125 #endif
1126 }
1127
1128 /*****************************************************************************
1129  * DvdReadFindCell
1130  *****************************************************************************/
1131 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1132 {
1133     int         pgc_id, pgn;
1134     int         i = 0;
1135     pgc_t *     p_pgc;
1136 #define cell p_dvd->p_cur_pgc->cell_playback
1137     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1138     {
1139 #if 0
1140         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1141         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1142 #else
1143         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1144
1145         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1146         {
1147             i++;
1148         }
1149         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1150 #endif
1151     }
1152     else
1153     {
1154         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1155     }
1156 #undef cell
1157     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1158                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgcn;
1159     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1160                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgn;
1161     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1162
1163     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1164     {
1165         p_dvd->i_chapter++;
1166         p_dvd->b_eoc = 1;
1167     }
1168 }