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 1.3 2001/12/07 18:33:07 sam 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 "common.h"
  64 #include "intf_msg.h"
  65 #include "threads.h"
  66 #include "mtime.h"
  67 #include "iso_lang.h"
  68 #include "tests.h"
  69
  70 #if defined( WIN32 )
  71 #   include "input_iovec.h"
  72 #endif
  73
  74 #include "stream_control.h"
  75 #include "input_ext-intf.h"
  76 #include "input_ext-dec.h"
  77 #include "input_ext-plugins.h"
  78
  79 #include "input_dvdread.h"
  80
  81 #include "debug.h"
  82
  83 #include "modules.h"
  84 #include "modules_export.h"
  85
  86 /* how many blocks DVDRead will read in each loop */
  87 #define DVD_BLOCK_READ_ONCE 64
  88 #define DVD_DATA_READ_ONCE  (4 * DVD_BLOCK_READ_ONCE)
  89
  90 /* Size of netlist */
  91 #define DVD_NETLIST_SIZE    512
  92
  93 /*****************************************************************************
  94  * Local prototypes
  95  *****************************************************************************/
  96 /* called from outside */
  97 static int  DvdReadProbe    ( probedata_t *p_data );
  98 static void DvdReadInit     ( struct input_thread_s * );
  99 static void DvdReadEnd      ( struct input_thread_s * );
 100 static void DvdReadOpen     ( struct input_thread_s * );
 101 static void DvdReadClose    ( struct input_thread_s * );
 102 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
 103 static int  DvdReadRead     ( struct input_thread_s *, data_packet_t ** );
 104 static void DvdReadSeek     ( struct input_thread_s *, off_t );
 105 static int  DvdReadRewind   ( struct input_thread_s * );
 106
 107 /* called only from here */
 108 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
 109 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
 110
 111 /*****************************************************************************
 112  * Functions exported as capabilities. They are declared as static so that
 113  * we don't pollute the namespace too much.
 114  *****************************************************************************/
 115 void _M( input_getfunctions )( function_list_t * p_function_list )
 116 {
 117 #define input p_function_list->functions.input
 118     p_function_list->pf_probe = DvdReadProbe;
 119     input.pf_init             = DvdReadInit;
 120     input.pf_open             = DvdReadOpen;
 121     input.pf_close            = DvdReadClose;
 122     input.pf_end              = DvdReadEnd;
 123     input.pf_init_bit_stream  = InitBitstream;
 124     input.pf_read             = DvdReadRead;
 125     input.pf_set_area         = DvdReadSetArea;
 126     input.pf_demux            = input_DemuxPS;
 127     input.pf_new_packet       = input_NetlistNewPacket;
 128     input.pf_new_pes          = input_NetlistNewPES;
 129     input.pf_delete_packet    = input_NetlistDeletePacket;
 130     input.pf_delete_pes       = input_NetlistDeletePES;
 131     input.pf_rewind           = DvdReadRewind;
 132     input.pf_seek             = DvdReadSeek;
 133 #undef input
 134 }
 135
 136 /*
 137  * Data reading functions
 138  */
 139
 140 /*****************************************************************************
 141  * DvdReadProbe: verifies that the stream is a PS stream
 142  *****************************************************************************/
 143 static int DvdReadProbe( probedata_t *p_data )
 144 {
 145     input_thread_t * p_input = (input_thread_t *)p_data;
 146
 147     char * psz_name = p_input->p_source;
 148     int i_score = 5;
 149
 150     if( TestMethod( INPUT_METHOD_VAR, "dvdread" ) )
 151     {
 152         return( 999 );
 153     }
 154
 155     if( ( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ) )
 156     {
 157         /* If the user specified "dvdread:" then he probably wants
 158          * to use libdvdread */
 159         i_score = 100;
 160         psz_name += 4;
 161     }
 162
 163     return( i_score );
 164 }
 165
 166 /*****************************************************************************
 167  * DvdReadInit: initializes DVD structures
 168  *****************************************************************************/
 169 static void DvdReadInit( input_thread_t * p_input )
 170 {
 171     thread_dvd_data_t *  p_dvd;
 172     input_area_t *       p_area;
 173     int                  i_title;
 174     int                  i_chapter;
 175     int                  i;
 176
 177     p_dvd = malloc( sizeof(thread_dvd_data_t) );
 178     if( p_dvd == NULL )
 179     {
 180         intf_ErrMsg( "dvdread error: out of memory" );
 181         p_input->b_error = 1;
 182         return;
 183     }
 184
 185     /* we take the pointer to dvd_reader_t back  */
 186     p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
 187     p_dvd->p_title = NULL;
 188     p_dvd->p_vts_file = NULL;
 189
 190     p_input->p_plugin_data = (void *)p_dvd;
 191     p_input->p_method_data = NULL;
 192
 193     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 194      * DVD_DATA_READ_ONCE at most */
 195     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 196     /* this value mustn't be modifed */
 197     p_input->i_read_once = DVD_DATA_READ_ONCE;
 198
 199     /* Reading structures initialisation */
 200     input_NetlistInit( p_input,  DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
 201                    DVD_NETLIST_SIZE, DVD_VIDEO_LB_LEN, p_dvd->i_block_once );
 202     intf_WarnMsg( 2, "dvdread info: netlist initialized" );
 203
 204     /* Ifo allocation & initialisation */
 205     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 206     {
 207         intf_ErrMsg( "dvdread error: can't open VMG info" );
 208         DVDClose( p_dvd->p_dvdread );
 209         free( p_dvd );
 210         p_input->b_error = 1;
 211         return;
 212     }
 213     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 214
 215     /* Set stream and area data */
 216     vlc_mutex_lock( &p_input->stream.stream_lock );
 217
 218     /* Initialize ES structures */
 219     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 220
 221     /* disc input method */
 222     p_input->stream.i_method = INPUT_METHOD_DVD;
 223
 224 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 225     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 226
 227 #define area p_input->stream.pp_areas
 228     /* We start from 1 here since the default area 0
 229      * is reserved for video_ts.vob */
 230     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 231     {
 232         input_AddArea( p_input );
 233
 234         /* Titles are Program Chains */
 235         area[i]->i_id = i;
 236
 237         /* Absolute start offset and size
 238          * We can only set that with vts ifo, so we do it during the
 239          * first call to DVDSetArea */
 240         area[i]->i_start = 0;
 241         area[i]->i_size = 0;
 242
 243         /* Number of chapters */
 244         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 245         area[i]->i_part = 1;
 246
 247         /* Number of angles */
 248         area[i]->i_angle_nb = 0;
 249         area[i]->i_angle = 1;
 250
 251         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 252     }
 253 #undef area
 254
 255     /* Get requested title - if none try the first title */
 256     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 257     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 258     {
 259         i_title = 1;
 260     }
 261
 262 #undef tt_srpt
 263
 264     /* Get requested chapter - if none defaults to first one */
 265     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 266     if( i_chapter <= 0 )
 267     {
 268         i_chapter = 1;
 269     }
 270
 271     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 272
 273     p_area = p_input->stream.pp_areas[i_title];
 274
 275     /* set title, chapter, audio and subpic */
 276     DvdReadSetArea( p_input, p_area );
 277
 278     vlc_mutex_unlock( &p_input->stream.stream_lock );
 279
 280     return;
 281 }
 282
 283 /*****************************************************************************
 284  * DvdReadOpen: open libdvdread
 285  *****************************************************************************/
 286 static void DvdReadOpen( struct input_thread_s *p_input )
 287 {
 288     dvd_reader_t    *p_dvdread;
 289
 290     vlc_mutex_lock( &p_input->stream.stream_lock );
 291
 292     /* If we are here we can control the pace... */
 293     p_input->stream.b_pace_control = 1;
 294
 295     p_input->stream.b_seekable = 1;
 296     p_input->stream.p_selected_area->i_size = 0;
 297
 298     p_input->stream.p_selected_area->i_tell = 0;
 299
 300     vlc_mutex_unlock( &p_input->stream.stream_lock );
 301
 302     /* XXX: put this shit in an access plugin */
 303     if( strlen( p_input->p_source ) > 8
 304          && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
 305     {
 306         p_dvdread = DVDOpen( p_input->p_source + 8 );
 307     }
 308     else
 309     {
 310         p_dvdread = DVDOpen( p_input->p_source );
 311     }
 312
 313     if( ! p_dvdread )
 314     {
 315         p_input->b_error = 1;
 316         return;
 317     }
 318
 319     /* the vlc input doesn't handle the file descriptor with libdvdread */
 320     p_input->i_handle = -1;
 321
 322     /* p_dvdread is stored in p_plugin_data until we have
 323      * malloc'ed a dvd_thread_data_t */
 324     p_input->p_plugin_data = (void *) p_dvdread;
 325 }
 326
 327 /*****************************************************************************
 328  * DvdReadClose: close libdvdread
 329  *****************************************************************************/
 330 static void DvdReadClose( struct input_thread_s *p_input )
 331 {
 332     DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
 333     free( p_input->p_plugin_data );
 334     p_input->p_plugin_data = NULL;
 335
 336 }
 337
 338 /*****************************************************************************
 339  * DvdReadEnd: frees unused data
 340  *****************************************************************************/
 341 static void DvdReadEnd( input_thread_t * p_input )
 342 {
 343     thread_dvd_data_t *     p_dvd;
 344
 345     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 346
 347     /* close libdvdread */
 348     DVDCloseFile( p_dvd->p_title );
 349     ifoClose( p_dvd->p_vts_file );
 350     ifoClose( p_dvd->p_vmg_file );
 351
 352     /* Close netlist */
 353     input_NetlistEnd( p_input );
 354     p_input->p_method_data = NULL;
 355 }
 356
 357 #define p_pgc         p_dvd->p_cur_pgc
 358
 359 /*****************************************************************************
 360  * DvdReadSetArea: initialize input data for title x, chapter y.
 361  * It should be called for each user navigation request.
 362  *****************************************************************************
 363  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 364  * Note that you have to take the lock before entering here.
 365  *****************************************************************************/
 366 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 367 {
 368     thread_dvd_data_t *  p_dvd;
 369     int                  pgc_id = 0;
 370     int                  pgn = 0;
 371
 372     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 373
 374     /* we can't use the interface slider until initilization is complete */
 375     p_input->stream.b_seekable = 0;
 376
 377     if( p_area != p_input->stream.p_selected_area )
 378     {
 379         es_descriptor_t *    p_es;
 380         int                  i_cell = 0;
 381         int                  i_audio_nb = 0;
 382         int                  i_spu_nb = 0;
 383         int                  i;
 384
 385 #define p_vmg         p_dvd->p_vmg_file
 386 #define p_vts         p_dvd->p_vts_file
 387         if( p_dvd->p_title != NULL )
 388         {
 389             DVDCloseFile( p_dvd->p_title );
 390         }
 391
 392         if( p_vts != NULL )
 393         {
 394             ifoClose( p_vts );
 395         }
 396
 397         /* Reset the Chapter position of the old title */
 398         p_input->stream.p_selected_area->i_part = 1;
 399
 400         /*
 401          *  We have to load all title information
 402          */
 403         /* Change the default area */
 404         p_input->stream.p_selected_area = p_area;
 405
 406         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 407             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 408             p_area->i_id );
 409
 410         /* ifo vts */
 411         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 412                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 413         {
 414             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 415             ifoClose( p_vmg );
 416             DVDClose( p_dvd->p_dvdread );
 417             p_input->b_error = 1;
 418             return -1;
 419         }
 420
 421         /* title position inside the selected vts */
 422         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 423
 424         /*
 425          * Set selected title start
 426          */
 427         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 428         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 429         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 430         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 431
 432         p_area->i_start =
 433             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 434
 435         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 436                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 437
 438         /*
 439          * Find title end
 440          */
 441         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 442
 443         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 444         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 445
 446         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 447                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 448
 449         /*
 450          * Set properties for current chapter
 451          */
 452         /* Remeber current chapter */
 453         p_dvd->i_chapter = p_area->i_part;
 454         p_dvd->b_eoc = 0;
 455
 456         pgc_id = p_vts->vts_ptt_srpt->title[
 457                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 458         pgn = p_vts->vts_ptt_srpt->title[
 459                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 460
 461         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 462         p_dvd->i_pack_len = 0;
 463         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 464         DvdReadFindCell( p_dvd );
 465
 466         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 467             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 468
 469         /*
 470          * Angle management
 471          */
 472         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 473         p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 474
 475         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 476         {
 477             p_area->i_angle = 1;
 478         }
 479         p_dvd->i_angle = p_area->i_angle;
 480         p_dvd->i_angle_nb = p_area->i_angle_nb;
 481
 482         /*
 483          * We've got enough info, time to open the title set data.
 484          */
 485         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 486             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 487             DVD_READ_TITLE_VOBS ) ) )
 488         {
 489             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 490                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 491             ifoClose( p_vts );
 492             ifoClose( p_vmg );
 493             DVDClose( p_dvd->p_dvdread );
 494             return -1;
 495         }
 496
 497 //        IfoPrintTitle( p_dvd );
 498
 499         /*
 500          * Destroy obsolete ES by reinitializing program 0
 501          * and find all ES in title with ifo data
 502          */
 503         if( p_input->stream.pp_programs != NULL )
 504         {
 505             /* We don't use input_EndStream here since
 506              * we keep area structures */
 507
 508             for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
 509             {
 510                 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
 511             }
 512
 513             free( p_input->stream.pp_selected_es );
 514             input_DelProgram( p_input, p_input->stream.pp_programs[0] );
 515
 516             p_input->stream.pp_selected_es = NULL;
 517             p_input->stream.i_selected_es_number = 0;
 518         }
 519
 520         input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
 521
 522         /* No PSM to read in DVD mode, we already have all information */
 523         p_input->stream.pp_programs[0]->b_is_ok = 1;
 524
 525         p_es = NULL;
 526
 527         /* ES 0 -> video MPEG2 */
 528 //        IfoPrintVideo( p_dvd );
 529
 530         p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
 531         p_es->i_stream_id = 0xe0;
 532         p_es->i_type = MPEG2_VIDEO_ES;
 533         p_es->i_cat = VIDEO_ES;
 534         if( p_main->b_video )
 535         {
 536             input_SelectES( p_input, p_es );
 537         }
 538
 539 #define audio_control \
 540     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 541         /* Audio ES, in the order they appear in .ifo */
 542         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 543         {
 544             int i_position = 0;
 545             u16 i_id;
 546
 547 //            IfoPrintAudio( p_dvd, i );
 548
 549             /* audio channel is active if first byte is 0x80 */
 550             if( audio_control & 0x8000 )
 551             {
 552                 i_audio_nb++;
 553                 i_position = ( audio_control & 0x7F00 ) >> 8;
 554
 555             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 556                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 557                 {
 558                 case 0x00:              /* AC3 */
 559                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 560                     p_es = input_AddES( p_input,
 561                                p_input->stream.pp_programs[0], i_id, 0 );
 562                     p_es->i_stream_id = 0xbd;
 563                     p_es->i_type = AC3_AUDIO_ES;
 564                     p_es->b_audio = 1;
 565                     p_es->i_cat = AUDIO_ES;
 566                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 567                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 568                     strcat( p_es->psz_desc, " (ac3)" );
 569
 570                     break;
 571                 case 0x02:
 572                 case 0x03:              /* MPEG audio */
 573                     i_id = 0xc0 + i_position;
 574                     p_es = input_AddES( p_input,
 575                                     p_input->stream.pp_programs[0], i_id, 0 );
 576                     p_es->i_stream_id = i_id;
 577                     p_es->i_type = MPEG2_AUDIO_ES;
 578                     p_es->b_audio = 1;
 579                     p_es->i_cat = AUDIO_ES;
 580                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 581                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 582                     strcat( p_es->psz_desc, " (mpeg)" );
 583
 584                     break;
 585                 case 0x04:              /* LPCM */
 586
 587                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 588                     p_es = input_AddES( p_input,
 589                                     p_input->stream.pp_programs[0], i_id, 0 );
 590                     p_es->i_stream_id = i_id;
 591                     p_es->i_type = LPCM_AUDIO_ES;
 592                     p_es->b_audio = 1;
 593                     p_es->i_cat = AUDIO_ES;
 594                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 595                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 596                     strcat( p_es->psz_desc, " (lpcm)" );
 597
 598                     break;
 599                 case 0x06:              /* DTS */
 600                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 601                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 602                                  "(0x%x)", i_id );
 603                     break;
 604                 default:
 605                     i_id = 0;
 606                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 607                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 608                 }
 609             }
 610         }
 611 #undef audio_control
 612 #define spu_control \
 613     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 614
 615         /* Sub Picture ES */
 616
 617         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 618         {
 619             int i_position = 0;
 620             u16 i_id;
 621
 622 //            IfoPrintSpu( p_dvd, i );
 623             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 624
 625             if( spu_control & 0x80000000 )
 626             {
 627                 i_spu_nb++;
 628
 629                 /*  there are several streams for one spu */
 630                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 631                 {
 632                     /* 16:9 */
 633                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 634                     {
 635                     case 1:
 636                         i_position = spu_control & 0xff;
 637                         break;
 638                     case 2:
 639                         i_position = ( spu_control >> 8 ) & 0xff;
 640                         break;
 641                     default:
 642                         i_position = ( spu_control >> 16 ) & 0xff;
 643                         break;
 644                     }
 645                 }
 646                 else
 647                 {
 648                     /* 4:3 */
 649                     i_position = ( spu_control >> 24 ) & 0x7F;
 650                 }
 651
 652                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 653                 p_es = input_AddES( p_input,
 654                                     p_input->stream.pp_programs[0], i_id, 0 );
 655                 p_es->i_stream_id = 0xbd;
 656                 p_es->i_type = DVD_SPU_ES;
 657                 p_es->i_cat = SPU_ES;
 658                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 659                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 660             }
 661         }
 662 #undef spu_control
 663         if( p_main->b_audio )
 664         {
 665             /* For audio: first one if none or a not existing one specified */
 666             int i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 667             if( i_audio < 0 || i_audio > i_audio_nb )
 668             {
 669                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 670                 i_audio = 1;
 671             }
 672             if( i_audio > 0 && i_audio_nb > 0 )
 673             {
 674                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 675                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 676                       REQUESTED_AC3 ) )
 677                 {
 678                     int     i_ac3 = i_audio;
 679                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 680                              AC3_AUDIO_ES ) && ( i_ac3 <=
 681                              p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
 682                     {
 683                         i_ac3++;
 684                     }
 685                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 686                     {
 687                         input_SelectES( p_input,
 688                                         p_input->stream.pp_es[i_ac3] );
 689                     }
 690                 }
 691                 else
 692                 {
 693                     input_SelectES( p_input,
 694                                     p_input->stream.pp_es[i_audio] );
 695                 }
 696             }
 697         }
 698
 699         if( p_main->b_video )
 700         {
 701             /* for spu, default is none */
 702             int i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 703             if( i_spu < 0 || i_spu > i_spu_nb )
 704             {
 705                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 706                 i_spu = 0;
 707             }
 708             if( i_spu > 0 && i_spu_nb > 0 )
 709             {
 710                 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
 711                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 712             }
 713         }
 714     } /* i_title >= 0 */
 715     else
 716     {
 717         p_area = p_input->stream.p_selected_area;
 718     }
 719
 720     /*
 721      * Chapter selection
 722      */
 723
 724     if( p_area->i_part != p_dvd->i_chapter )
 725     {
 726         if( ( p_area->i_part > 0 ) &&
 727             ( p_area->i_part <= p_area->i_part_nb ))
 728         {
 729             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 730             pgc_id = p_vts->vts_ptt_srpt->title[
 731                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 732             pgn = p_vts->vts_ptt_srpt->title[
 733                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 734
 735             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 736
 737             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 738             p_dvd->i_chapter = p_area->i_part;
 739             DvdReadFindCell( p_dvd );
 740
 741             p_dvd->i_pack_len = 0;
 742             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 743                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 744         }
 745         else
 746         {
 747             p_area->i_part = p_dvd->i_chapter;
 748         }
 749     }
 750 #undef p_vts
 751 #undef p_vmg
 752
 753     if( p_area->i_angle != p_dvd->i_angle )
 754     {
 755         p_dvd->i_angle = p_area->i_angle;
 756
 757         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 758     }
 759     /* warn interface that something has changed */
 760     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 761     p_input->stream.b_seekable = 1;
 762     p_input->stream.b_changed = 1;
 763
 764     return 0;
 765 }
 766
 767
 768 /*****************************************************************************
 769  * DvdReadRead: reads data packets into the netlist.
 770  *****************************************************************************
 771  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 772  * EOF.
 773  *****************************************************************************/
 774 static int DvdReadRead( input_thread_t * p_input,
 775                         data_packet_t ** pp_packets )
 776 {
 777     thread_dvd_data_t *     p_dvd;
 778     netlist_t *             p_netlist;
 779     u8                      p_data[DVD_VIDEO_LB_LEN];
 780     struct iovec *          p_vec;
 781     struct data_packet_s *  pp_data[DVD_DATA_READ_ONCE];
 782     u8 *                    pi_cur;
 783     int                     i_blocks;
 784     int                     i_read;
 785     int                     i_iovec;
 786     int                     i_packet_size;
 787     int                     i_packet;
 788     int                     i_pos;
 789
 790     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 791     p_netlist = (netlist_t *)p_input->p_method_data;
 792
 793     /*
 794      * Playback by cell in this pgc, starting at the cell for our chapter.
 795      */
 796
 797     /*
 798      * End of pack, we select the following one
 799      */
 800     if( ! p_dvd->i_pack_len )
 801     {
 802         /*
 803          * Read NAV packet.
 804          */
 805         if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 806                        1, p_data ) ) != 1 )
 807         {
 808             intf_ErrMsg( "dvdread error: read failed for block %d",
 809                          p_dvd->i_next_vobu );
 810             return -1;
 811         }
 812
 813         assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
 814
 815         /*
 816          * Parse the contained dsi packet.
 817          */
 818
 819         DvdReadHandleDSI( p_dvd, p_data );
 820
 821         /* End of File */
 822         if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 823         {
 824             return 1;
 825         }
 826
 827         assert( p_dvd->i_pack_len < 1024 );
 828         /* Ugly kludge: we send the pack block to the input for it
 829          * sometimes has a zero scr and restart the sync */
 830 //        p_dvd->i_cur_block ++;
 831         p_dvd->i_pack_len++;
 832
 833     }
 834
 835     /*
 836      * Compute the number of blocks to read
 837      */
 838     i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
 839              ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
 840     p_dvd->i_pack_len -= i_blocks;
 841     p_netlist->i_read_once = i_blocks;
 842
 843     /* Get an iovec pointer */
 844     if( ( p_vec = input_NetlistGetiovec( p_netlist ) ) == NULL )
 845     {
 846         intf_ErrMsg( "dvdread error: can't get iovec" );
 847         return -1;
 848     }
 849
 850     /* Reads from DVD */
 851     i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 852                              i_blocks, p_vec );
 853     if( i_read != i_blocks )
 854     {
 855         intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 856                      i_read, i_blocks, p_dvd->i_cur_block );
 857         return -1;
 858     }
 859
 860     p_dvd->i_cur_block += i_read;
 861 /*
 862     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 863 */
 864     /* Update netlist indexes: we don't do it in DVDGetiovec since we
 865      * need know the real number of blocks read */
 866     input_NetlistMviovec( p_netlist, i_read, pp_data );
 867
 868     i_packet = 0;
 869
 870     /* Read headers to compute payload length */
 871     for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
 872     {
 873         i_pos = 0;
 874
 875         while( i_pos < p_netlist->i_buffer_size )
 876         {
 877             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 878
 879             /*default header */
 880             if( U32_AT( pi_cur ) != 0x1BA )
 881             {
 882                 /* That's the case for all packets, except pack header. */
 883                 i_packet_size = U16_AT( pi_cur + 4 );
 884                 pp_packets[i_packet] = input_NetlistNewPtr( p_netlist );
 885                 (*pp_data[i_iovec]->pi_refcount)++;
 886                 pp_packets[i_packet]->pi_refcount =
 887                     pp_data[i_iovec]->pi_refcount;
 888                 pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
 889             }
 890             else
 891             {
 892                 /* MPEG-2 Pack header. */
 893                 i_packet_size = 8;
 894                 pp_packets[i_packet] = pp_data[i_iovec];
 895
 896             }
 897
 898             pp_packets[i_packet]->p_payload_start =
 899                     pp_packets[i_packet]->p_buffer + i_pos;
 900
 901             pp_packets[i_packet]->p_payload_end =
 902                     pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
 903
 904             pp_packets[i_packet]->p_next = NULL;
 905             pp_packets[i_packet]->b_discard_payload = 0;
 906
 907             i_packet++;
 908             i_pos += i_packet_size + 6;
 909         }
 910     }
 911
 912     pp_packets[i_packet] = NULL;
 913
 914     vlc_mutex_lock( &p_input->stream.stream_lock );
 915
 916     p_input->stream.p_selected_area->i_tell =
 917         LB2OFF( p_dvd->i_cur_block ) -
 918             p_input->stream.p_selected_area->i_start;
 919
 920     if( p_dvd->b_eoc )
 921     {
 922         /* We modify i_part only at end of chapter not to erase
 923          * some modification from the interface */
 924         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 925         p_dvd->b_eoc = 0;
 926     }
 927
 928
 929     vlc_mutex_unlock( &p_input->stream.stream_lock );
 930
 931     return 0;
 932 }
 933 #undef p_pgc
 934
 935 /*****************************************************************************
 936  * DVDRewind : reads a stream backward
 937  *****************************************************************************/
 938 static int DvdReadRewind( input_thread_t * p_input )
 939 {
 940     return( -1 );
 941 }
 942
 943 /*****************************************************************************
 944  * DvdReadSeek : Goes to a given position on the stream.
 945  *****************************************************************************
 946  * This one is used by the input and translate chronological position from
 947  * input to logical position on the device.
 948  * The lock should be taken before calling this function.
 949  *****************************************************************************/
 950 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 951 {
 952     thread_dvd_data_t *     p_dvd;
 953     int                     i_lb;
 954     int                     i_tmp;
 955     int                     i_chapter = 0;
 956     int                     i_cell = 0;
 957     int                     i_vobu = 0;
 958     int                     i_sub_cell = 0;
 959
 960     i_off += p_input->stream.p_selected_area->i_start;
 961     i_lb = OFF2LB( i_off );
 962     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 963
 964     /* find cell */
 965     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 966     {
 967         i_cell++;
 968     }
 969
 970     /* find chapter */
 971     do
 972     {
 973         pgc_t *     p_pgc;
 974         int         pgc_id, pgn;
 975
 976         i_chapter++;
 977         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
 978                     p_dvd->i_ttn-1].ptt[i_chapter].pgcn;
 979         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
 980                     p_dvd->i_ttn-1].ptt[i_chapter].pgn;
 981
 982         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 983         i_tmp = p_pgc->program_map[pgn-1];
 984
 985     } while( i_tmp <= i_cell );
 986
 987     /* find vobu */
 988     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
 989             <= i_lb )
 990     {
 991         i_vobu++;
 992     }
 993
 994     /* find sub_cell */
 995     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
 996             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
 997     {
 998         i_sub_cell++;
 999     }
1000
1001 /*
1002     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1003             i_cell, i_sub_cell,i_chapter, i_vobu,
1004             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1005             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1006             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1007 */
1008     p_dvd->i_cur_block = i_lb;
1009     p_dvd->i_next_vobu =
1010         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1011     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1012     p_dvd->i_cur_cell = i_cell;
1013     p_dvd->i_chapter = i_chapter;
1014     DvdReadFindCell( p_dvd );
1015
1016     p_input->stream.p_selected_area->i_tell =
1017         LB2OFF ( p_dvd->i_cur_block )
1018          - p_input->stream.p_selected_area->i_start;
1019     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1020
1021     return;
1022 }
1023
1024 /*****************************************************************************
1025  * DvdReadHandleDSI
1026  *****************************************************************************/
1027 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1028 {
1029     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1030
1031     /*
1032      * Determine where we go next.  These values are the ones we mostly
1033      * care about.
1034      */
1035     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1036
1037     /*
1038      * If we're not at the end of this cell, we can determine the next
1039      * VOBU to display using the VOBU_SRI information section of the
1040      * DSI.  Using this value correctly follows the current angle,
1041      * avoiding the doubled scenes in The Matrix, and makes our life
1042      * really happy.
1043      */
1044     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1045     {
1046 #if 1
1047         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1048         {
1049             case 0x4:
1050                 /* interleaved unit with no angle */
1051                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1052                 {
1053                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1054                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1055                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1056                 }
1057                 else
1058                 {
1059                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1060                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1061                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1062                 }
1063                 break;
1064             case 0x5:
1065                 /* vobu is end of ilvu */
1066                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1067                 {
1068                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1069                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1070                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1071
1072                     break;
1073                 }
1074             case 0x6:
1075                 /* vobu is beginning of ilvu */
1076             case 0x9:
1077                 /* next scr is 0 */
1078             case 0xa:
1079                 /* entering interleaved section */
1080             case 0x8:
1081                 /* non interleaved cells in interleaved section */
1082             default:
1083                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1084                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1085                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1086                 break;
1087         }
1088 #else
1089         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1090             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1091         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1092 #endif
1093     }
1094     else
1095     {
1096         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1097         DvdReadFindCell( p_dvd );
1098
1099         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1100         p_dvd->i_next_vobu =
1101             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1102     }
1103
1104 #if 0
1105     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1106             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1107             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1108             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1109             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1110             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1111
1112     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1113             p_dvd->dsi_pack.sml_pbi.category,
1114             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1115             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1116             p_dvd->dsi_pack.sml_pbi.size );
1117
1118     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1119             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1120             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1121             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1122 #endif
1123 }
1124
1125 /*****************************************************************************
1126  * DvdReadFindCell
1127  *****************************************************************************/
1128 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1129 {
1130     int         pgc_id, pgn;
1131     int         i = 0;
1132     pgc_t *     p_pgc;
1133 #define cell p_dvd->p_cur_pgc->cell_playback
1134     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1135     {
1136 #if 0
1137         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1138         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1139 #else
1140         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1141
1142         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1143         {
1144             i++;
1145         }
1146         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1147 #endif
1148     }
1149     else
1150     {
1151         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1152     }
1153 #undef cell
1154     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1155                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgcn;
1156     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1157                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgn;
1158     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1159
1160     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1161     {
1162         p_dvd->i_chapter++;
1163         p_dvd->b_eoc = 1;
1164     }
1165 }