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 1.11 2001/12/30 04:26:53 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 /*****************************************************************************
  91  * Local prototypes
  92  *****************************************************************************/
  93 /* called from outside */
  94 static int  DvdReadProbe    ( probedata_t *p_data );
  95 static void DvdReadInit     ( struct input_thread_s * );
  96 static void DvdReadEnd      ( struct input_thread_s * );
  97 static void DvdReadOpen     ( struct input_thread_s * );
  98 static void DvdReadClose    ( struct input_thread_s * );
  99 static int  DvdReadSetArea  ( struct input_thread_s *, struct input_area_s * );
 100 static int  DvdReadRead     ( struct input_thread_s *, data_packet_t ** );
 101 static void DvdReadSeek     ( struct input_thread_s *, off_t );
 102 static int  DvdReadRewind   ( struct input_thread_s * );
 103
 104 /* called only from here */
 105 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
 106 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
 107
 108 /*****************************************************************************
 109  * Declare a buffer manager
 110  *****************************************************************************/
 111 #define FLAGS           BUFFERS_UNIQUE_SIZE
 112 #define NB_LIFO         1
 113 DECLARE_BUFFERS_SHARED( FLAGS, NB_LIFO );
 114 DECLARE_BUFFERS_INIT( FLAGS, NB_LIFO );
 115 DECLARE_BUFFERS_END_SHARED( FLAGS, NB_LIFO );
 116 DECLARE_BUFFERS_NEWPACKET_SHARED( FLAGS, NB_LIFO );
 117 DECLARE_BUFFERS_DELETEPACKET_SHARED( FLAGS, NB_LIFO, 1000 );
 118 DECLARE_BUFFERS_NEWPES( FLAGS, NB_LIFO );
 119 DECLARE_BUFFERS_DELETEPES( FLAGS, NB_LIFO, 1000 );
 120 DECLARE_BUFFERS_TOIO( FLAGS, DVD_VIDEO_LB_LEN );
 121 DECLARE_BUFFERS_SHAREBUFFER( FLAGS );
 122
 123 /*****************************************************************************
 124  * Functions exported as capabilities. They are declared as static so that
 125  * we don't pollute the namespace too much.
 126  *****************************************************************************/
 127 void _M( input_getfunctions )( function_list_t * p_function_list )
 128 {
 129 #define input p_function_list->functions.input
 130     p_function_list->pf_probe = DvdReadProbe;
 131     input.pf_init             = DvdReadInit;
 132     input.pf_open             = DvdReadOpen;
 133     input.pf_close            = DvdReadClose;
 134     input.pf_end              = DvdReadEnd;
 135     input.pf_init_bit_stream  = InitBitstream;
 136     input.pf_read             = DvdReadRead;
 137     input.pf_set_area         = DvdReadSetArea;
 138     input.pf_demux            = input_DemuxPS;
 139     input.pf_new_packet       = input_NewPacket;
 140     input.pf_new_pes          = input_NewPES;
 141     input.pf_delete_packet    = input_DeletePacket;
 142     input.pf_delete_pes       = input_DeletePES;
 143     input.pf_rewind           = DvdReadRewind;
 144     input.pf_seek             = DvdReadSeek;
 145 #undef input
 146 }
 147
 148 /*
 149  * Data reading functions
 150  */
 151
 152 /*****************************************************************************
 153  * DvdReadProbe: verifies that the stream is a PS stream
 154  *****************************************************************************/
 155 static int DvdReadProbe( probedata_t *p_data )
 156 {
 157     input_thread_t * p_input = (input_thread_t *)p_data;
 158
 159     char * psz_name = p_input->p_source;
 160     int i_score = 5;
 161
 162     if( TestMethod( INPUT_METHOD_VAR, "dvdread" ) )
 163     {
 164         return( 999 );
 165     }
 166
 167     if( ( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ) )
 168     {
 169         /* If the user specified "dvdread:" then he probably wants
 170          * to use libdvdread */
 171         i_score = 100;
 172         psz_name += 4;
 173     }
 174
 175     return( i_score );
 176 }
 177
 178 /*****************************************************************************
 179  * DvdReadInit: initializes DVD structures
 180  *****************************************************************************/
 181 static void DvdReadInit( 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( "dvdread error: out of memory" );
 193         p_input->b_error = 1;
 194         return;
 195     }
 196
 197     /* we take the pointer to dvd_reader_t back  */
 198     p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
 199     p_dvd->p_title = NULL;
 200     p_dvd->p_vts_file = NULL;
 201
 202     p_input->p_plugin_data = (void *)p_dvd;
 203
 204     if( (p_input->p_method_data = input_BuffersInit()) == NULL )
 205     {
 206         free( p_dvd );
 207         p_input->b_error = 1;
 208         return;
 209     }
 210
 211     /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
 212      * DVD_DATA_READ_ONCE at most */
 213     p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
 214
 215     /* Ifo allocation & initialisation */
 216     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
 217     {
 218         intf_ErrMsg( "dvdread error: can't open VMG info" );
 219         DVDClose( p_dvd->p_dvdread );
 220         input_BuffersEnd( p_input->p_method_data );
 221         free( p_dvd );
 222         p_input->b_error = 1;
 223         return;
 224     }
 225     intf_WarnMsg( 2, "dvdread info: VMG opened" );
 226
 227     /* Set stream and area data */
 228     vlc_mutex_lock( &p_input->stream.stream_lock );
 229
 230     /* Initialize ES structures */
 231     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
 232
 233     /* disc input method */
 234     p_input->stream.i_method = INPUT_METHOD_DVD;
 235
 236 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
 237     intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
 238
 239 #define area p_input->stream.pp_areas
 240     /* We start from 1 here since the default area 0
 241      * is reserved for video_ts.vob */
 242     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
 243     {
 244         input_AddArea( p_input );
 245
 246         /* Titles are Program Chains */
 247         area[i]->i_id = i;
 248
 249         /* Absolute start offset and size
 250          * We can only set that with vts ifo, so we do it during the
 251          * first call to DVDSetArea */
 252         area[i]->i_start = 0;
 253         area[i]->i_size = 0;
 254
 255         /* Number of chapters */
 256         area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
 257         area[i]->i_part = 1;
 258
 259         /* Number of angles */
 260         area[i]->i_angle_nb = 0;
 261         area[i]->i_angle = 1;
 262
 263         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
 264     }
 265 #undef area
 266
 267     /* Get requested title - if none try the first title */
 268     i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
 269     if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
 270     {
 271         i_title = 1;
 272     }
 273
 274 #undef tt_srpt
 275
 276     /* Get requested chapter - if none defaults to first one */
 277     i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
 278     if( i_chapter <= 0 )
 279     {
 280         i_chapter = 1;
 281     }
 282
 283     p_input->stream.pp_areas[i_title]->i_part = i_chapter;
 284
 285     p_area = p_input->stream.pp_areas[i_title];
 286
 287     /* set title, chapter, audio and subpic */
 288     DvdReadSetArea( p_input, p_area );
 289
 290     vlc_mutex_unlock( &p_input->stream.stream_lock );
 291
 292     return;
 293 }
 294
 295 /*****************************************************************************
 296  * DvdReadOpen: open libdvdread
 297  *****************************************************************************/
 298 static void DvdReadOpen( struct input_thread_s *p_input )
 299 {
 300     dvd_reader_t    *p_dvdread;
 301
 302     vlc_mutex_lock( &p_input->stream.stream_lock );
 303
 304     /* If we are here we can control the pace... */
 305     p_input->stream.b_pace_control = 1;
 306
 307     p_input->stream.b_seekable = 1;
 308     p_input->stream.p_selected_area->i_size = 0;
 309
 310     p_input->stream.p_selected_area->i_tell = 0;
 311
 312     vlc_mutex_unlock( &p_input->stream.stream_lock );
 313
 314     /* XXX: put this shit in an access plugin */
 315     if( strlen( p_input->p_source ) > 8
 316          && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
 317     {
 318         p_dvdread = DVDOpen( p_input->p_source + 8 );
 319     }
 320     else
 321     {
 322         p_dvdread = DVDOpen( p_input->p_source );
 323     }
 324
 325     if( ! p_dvdread )
 326     {
 327         p_input->b_error = 1;
 328         return;
 329     }
 330
 331     /* the vlc input doesn't handle the file descriptor with libdvdread */
 332     p_input->i_handle = -1;
 333
 334     /* p_dvdread is stored in p_plugin_data until we have
 335      * malloc'ed a dvd_thread_data_t */
 336     p_input->p_plugin_data = (void *) p_dvdread;
 337 }
 338
 339 /*****************************************************************************
 340  * DvdReadClose: close libdvdread
 341  *****************************************************************************/
 342 static void DvdReadClose( struct input_thread_s *p_input )
 343 {
 344     DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
 345     free( p_input->p_plugin_data );
 346     p_input->p_plugin_data = NULL;
 347
 348 }
 349
 350 /*****************************************************************************
 351  * DvdReadEnd: frees unused data
 352  *****************************************************************************/
 353 static void DvdReadEnd( input_thread_t * p_input )
 354 {
 355     thread_dvd_data_t *     p_dvd;
 356
 357     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 358
 359     /* close libdvdread */
 360     DVDCloseFile( p_dvd->p_title );
 361     ifoClose( p_dvd->p_vts_file );
 362     ifoClose( p_dvd->p_vmg_file );
 363
 364     input_BuffersEnd( p_input->p_method_data );
 365 }
 366
 367 #define p_pgc         p_dvd->p_cur_pgc
 368
 369 /*****************************************************************************
 370  * DvdReadSetArea: initialize input data for title x, chapter y.
 371  * It should be called for each user navigation request.
 372  *****************************************************************************
 373  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
 374  * Note that you have to take the lock before entering here.
 375  *****************************************************************************/
 376 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
 377 {
 378     thread_dvd_data_t *  p_dvd;
 379     int                  pgc_id = 0;
 380     int                  pgn = 0;
 381
 382     p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
 383
 384     /* we can't use the interface slider until initilization is complete */
 385     p_input->stream.b_seekable = 0;
 386
 387     if( p_area != p_input->stream.p_selected_area )
 388     {
 389         es_descriptor_t *    p_es;
 390         int                  i_cell = 0;
 391         int                  i_audio_nb = 0;
 392         int                  i_spu_nb = 0;
 393         int                  i;
 394
 395 #define p_vmg         p_dvd->p_vmg_file
 396 #define p_vts         p_dvd->p_vts_file
 397         if( p_dvd->p_title != NULL )
 398         {
 399             DVDCloseFile( p_dvd->p_title );
 400         }
 401
 402         if( p_vts != NULL )
 403         {
 404             ifoClose( p_vts );
 405         }
 406
 407         /* Reset the Chapter position of the old title */
 408         p_input->stream.p_selected_area->i_part = 1;
 409
 410         /*
 411          *  We have to load all title information
 412          */
 413         /* Change the default area */
 414         p_input->stream.p_selected_area = p_area;
 415
 416         intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
 417             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 418             p_area->i_id );
 419
 420         /* ifo vts */
 421         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
 422                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
 423         {
 424             intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
 425             ifoClose( p_vmg );
 426             DVDClose( p_dvd->p_dvdread );
 427             p_input->b_error = 1;
 428             return -1;
 429         }
 430
 431         /* title position inside the selected vts */
 432         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
 433
 434         /*
 435          * Set selected title start
 436          */
 437         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
 438         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
 439         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 440         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 441
 442         p_area->i_start =
 443             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
 444
 445         intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
 446                          p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
 447
 448         /*
 449          * Find title end
 450          */
 451         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
 452
 453         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
 454         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
 455
 456         intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
 457                           p_area->i_start , p_area->i_size, p_dvd->i_end_block );
 458
 459         /*
 460          * Set properties for current chapter
 461          */
 462         /* Remeber current chapter */
 463         p_dvd->i_chapter = p_area->i_part;
 464         p_dvd->b_eoc = 0;
 465
 466         pgc_id = p_vts->vts_ptt_srpt->title[
 467                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 468         pgn = p_vts->vts_ptt_srpt->title[
 469                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 470
 471         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 472         p_dvd->i_pack_len = 0;
 473         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
 474         DvdReadFindCell( p_dvd );
 475
 476         p_dvd->i_next_vobu = p_dvd->i_cur_block =
 477             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 478
 479         /*
 480          * Angle management
 481          */
 482         p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
 483         p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
 484
 485         if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
 486         {
 487             p_area->i_angle = 1;
 488         }
 489         p_dvd->i_angle = p_area->i_angle;
 490         p_dvd->i_angle_nb = p_area->i_angle_nb;
 491
 492         /*
 493          * We've got enough info, time to open the title set data.
 494          */
 495         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
 496             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
 497             DVD_READ_TITLE_VOBS ) ) )
 498         {
 499             intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
 500                          p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
 501             ifoClose( p_vts );
 502             ifoClose( p_vmg );
 503             DVDClose( p_dvd->p_dvdread );
 504             return -1;
 505         }
 506
 507 //        IfoPrintTitle( p_dvd );
 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_control \
 550     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
 551         /* Audio ES, in the order they appear in .ifo */
 552         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
 553         {
 554             int i_position = 0;
 555             u16 i_id;
 556
 557 //            IfoPrintAudio( p_dvd, i );
 558
 559             /* audio channel is active if first byte is 0x80 */
 560             if( audio_control & 0x8000 )
 561             {
 562                 i_audio_nb++;
 563                 i_position = ( audio_control & 0x7F00 ) >> 8;
 564
 565             intf_WarnMsg( 12, "dvd audio position  %d", i_position );
 566                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
 567                 {
 568                 case 0x00:              /* AC3 */
 569                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
 570                     p_es = input_AddES( p_input,
 571                                p_input->stream.pp_programs[0], i_id, 0 );
 572                     p_es->i_stream_id = 0xbd;
 573                     p_es->i_type = AC3_AUDIO_ES;
 574                     p_es->b_audio = 1;
 575                     p_es->i_cat = AUDIO_ES;
 576                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 577                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 578                     strcat( p_es->psz_desc, " (ac3)" );
 579
 580                     break;
 581                 case 0x02:
 582                 case 0x03:              /* MPEG audio */
 583                     i_id = 0xc0 + i_position;
 584                     p_es = input_AddES( p_input,
 585                                     p_input->stream.pp_programs[0], i_id, 0 );
 586                     p_es->i_stream_id = i_id;
 587                     p_es->i_type = MPEG2_AUDIO_ES;
 588                     p_es->b_audio = 1;
 589                     p_es->i_cat = AUDIO_ES;
 590                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 591                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 592                     strcat( p_es->psz_desc, " (mpeg)" );
 593
 594                     break;
 595                 case 0x04:              /* LPCM */
 596
 597                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
 598                     p_es = input_AddES( p_input,
 599                                     p_input->stream.pp_programs[0], i_id, 0 );
 600                     p_es->i_stream_id = i_id;
 601                     p_es->i_type = LPCM_AUDIO_ES;
 602                     p_es->b_audio = 1;
 603                     p_es->i_cat = AUDIO_ES;
 604                     strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 605                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
 606                     strcat( p_es->psz_desc, " (lpcm)" );
 607
 608                     break;
 609                 case 0x06:              /* DTS */
 610                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
 611                     intf_ErrMsg( "dvd warning: DTS audio not handled yet"
 612                                  "(0x%x)", i_id );
 613                     break;
 614                 default:
 615                     i_id = 0;
 616                     intf_ErrMsg( "dvd warning: unknown audio type %.2x",
 617                              p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
 618                 }
 619             }
 620         }
 621 #undef audio_control
 622 #define spu_control \
 623     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
 624
 625         /* Sub Picture ES */
 626
 627         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
 628         {
 629             int i_position = 0;
 630             u16 i_id;
 631
 632 //            IfoPrintSpu( p_dvd, i );
 633             intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
 634
 635             if( spu_control & 0x80000000 )
 636             {
 637                 i_spu_nb++;
 638
 639                 /*  there are several streams for one spu */
 640                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
 641                 {
 642                     /* 16:9 */
 643                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
 644                     {
 645                     case 1:
 646                         i_position = spu_control & 0xff;
 647                         break;
 648                     case 2:
 649                         i_position = ( spu_control >> 8 ) & 0xff;
 650                         break;
 651                     default:
 652                         i_position = ( spu_control >> 16 ) & 0xff;
 653                         break;
 654                     }
 655                 }
 656                 else
 657                 {
 658                     /* 4:3 */
 659                     i_position = ( spu_control >> 24 ) & 0x7F;
 660                 }
 661
 662                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
 663                 p_es = input_AddES( p_input,
 664                                     p_input->stream.pp_programs[0], i_id, 0 );
 665                 p_es->i_stream_id = 0xbd;
 666                 p_es->i_type = DVD_SPU_ES;
 667                 p_es->i_cat = SPU_ES;
 668                 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
 669                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
 670             }
 671         }
 672 #undef spu_control
 673         if( p_main->b_audio )
 674         {
 675             /* For audio: first one if none or a not existing one specified */
 676             int i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
 677             if( i_audio < 0 || i_audio > i_audio_nb )
 678             {
 679                 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
 680                 i_audio = 1;
 681             }
 682             if( i_audio > 0 && i_audio_nb > 0 )
 683             {
 684                 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
 685                     ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
 686                       REQUESTED_AC3 ) )
 687                 {
 688                     int     i_ac3 = i_audio;
 689                     while( ( p_input->stream.pp_es[i_ac3]->i_type !=
 690                              AC3_AUDIO_ES ) && ( i_ac3 <=
 691                              p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
 692                     {
 693                         i_ac3++;
 694                     }
 695                     if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
 696                     {
 697                         input_SelectES( p_input,
 698                                         p_input->stream.pp_es[i_ac3] );
 699                     }
 700                 }
 701                 else
 702                 {
 703                     input_SelectES( p_input,
 704                                     p_input->stream.pp_es[i_audio] );
 705                 }
 706             }
 707         }
 708
 709         if( p_main->b_video )
 710         {
 711             /* for spu, default is none */
 712             int i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
 713             if( i_spu < 0 || i_spu > i_spu_nb )
 714             {
 715                 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
 716                 i_spu = 0;
 717             }
 718             if( i_spu > 0 && i_spu_nb > 0 )
 719             {
 720                 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
 721                 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
 722             }
 723         }
 724     } /* i_title >= 0 */
 725     else
 726     {
 727         p_area = p_input->stream.p_selected_area;
 728     }
 729
 730     /*
 731      * Chapter selection
 732      */
 733
 734     if( p_area->i_part != p_dvd->i_chapter )
 735     {
 736         if( ( p_area->i_part > 0 ) &&
 737             ( p_area->i_part <= p_area->i_part_nb ))
 738         {
 739             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
 740             pgc_id = p_vts->vts_ptt_srpt->title[
 741                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
 742             pgn = p_vts->vts_ptt_srpt->title[
 743                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
 744
 745             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
 746
 747             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
 748             p_dvd->i_chapter = p_area->i_part;
 749             DvdReadFindCell( p_dvd );
 750
 751             p_dvd->i_pack_len = 0;
 752             p_dvd->i_next_vobu = p_dvd->i_cur_block =
 753                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
 754         }
 755         else
 756         {
 757             p_area->i_part = p_dvd->i_chapter;
 758         }
 759     }
 760 #undef p_vts
 761 #undef p_vmg
 762
 763     if( p_area->i_angle != p_dvd->i_angle )
 764     {
 765         p_dvd->i_angle = p_area->i_angle;
 766
 767         intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
 768     }
 769     /* warn interface that something has changed */
 770     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
 771     p_input->stream.b_seekable = 1;
 772     p_input->stream.b_changed = 1;
 773
 774     return 0;
 775 }
 776
 777
 778 /*****************************************************************************
 779  * DvdReadRead: reads data packets into the netlist.
 780  *****************************************************************************
 781  * Returns -1 in case of error, 0 if everything went well, and 1 in case of
 782  * EOF.
 783  *****************************************************************************/
 784 static int DvdReadRead( input_thread_t * p_input,
 785                         data_packet_t ** pp_data )
 786 {
 787     thread_dvd_data_t *     p_dvd;
 788     u8                      p_data[DVD_VIDEO_LB_LEN];
 789     struct iovec            p_vec[DVD_DATA_READ_ONCE];
 790     u8 *                    pi_cur;
 791     int                     i_blocks;
 792     int                     i_read;
 793     int                     i_iovec;
 794     int                     i_packet_size;
 795     int                     i_packet;
 796     int                     i_pos;
 797     data_packet_t *         p_data_p;
 798
 799     p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
 800
 801     *pp_data = NULL;
 802
 803     /*
 804      * Playback by cell in this pgc, starting at the cell for our chapter.
 805      */
 806
 807     /*
 808      * End of pack, we select the following one
 809      */
 810     if( ! p_dvd->i_pack_len )
 811     {
 812         /*
 813          * Read NAV packet.
 814          */
 815         if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
 816                        1, p_data ) ) != 1 )
 817         {
 818             intf_ErrMsg( "dvdread error: read failed for block %d",
 819                          p_dvd->i_next_vobu );
 820             return -1;
 821         }
 822
 823         assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
 824
 825         /*
 826          * Parse the contained dsi packet.
 827          */
 828
 829         DvdReadHandleDSI( p_dvd, p_data );
 830
 831         /* End of File */
 832         if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
 833         {
 834             return 1;
 835         }
 836
 837         assert( p_dvd->i_pack_len < 1024 );
 838         /* Ugly kludge: we send the pack block to the input for it
 839          * sometimes has a zero scr and restart the sync */
 840 //        p_dvd->i_cur_block ++;
 841         p_dvd->i_pack_len++;
 842
 843     }
 844
 845     /*
 846      * Compute the number of blocks to read
 847      */
 848     i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
 849              ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
 850     p_dvd->i_pack_len -= i_blocks;
 851
 852     /* Get iovecs */
 853     *pp_data = p_data_p = input_BuffersToIO( p_input->p_method_data, p_vec,
 854                                              DVD_DATA_READ_ONCE );
 855
 856     if ( p_data_p == NULL )
 857     {
 858         return( -1 );
 859     }
 860
 861     /* Reads from DVD */
 862     i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
 863                              i_blocks, p_vec );
 864     if( i_read != i_blocks )
 865     {
 866         intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
 867                      i_read, i_blocks, p_dvd->i_cur_block );
 868         return -1;
 869     }
 870
 871     p_dvd->i_cur_block += i_read;
 872 /*
 873     intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
 874 */
 875     i_packet = 0;
 876
 877     /* Read headers to compute payload length */
 878     for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
 879     {
 880         data_packet_t * p_current = p_data_p;
 881         i_pos = 0;
 882
 883         while( i_pos < DVD_VIDEO_LB_LEN )
 884         {
 885             pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
 886
 887             /*default header */
 888             if( U32_AT( pi_cur ) != 0x1BA )
 889             {
 890                 /* That's the case for all packets, except pack header. */
 891                 i_packet_size = U16_AT( pi_cur + 4 );
 892             }
 893             else
 894             {
 895                 /* MPEG-2 Pack header. */
 896                 i_packet_size = 8;
 897             }
 898             if( i_pos != 0 )
 899             {
 900                 *pp_data = input_ShareBuffer( p_input->p_method_data,
 901                                               p_current );
 902             }
 903             else
 904             {
 905                 *pp_data = p_data_p;
 906                 p_data_p = p_data_p->p_next;
 907             }
 908
 909             (*pp_data)->p_payload_start = (*pp_data)->p_demux_start =
 910                     (*pp_data)->p_demux_start + i_pos;
 911
 912
 913             (*pp_data)->p_payload_end =
 914                     (*pp_data)->p_payload_start + i_packet_size + 6;
 915
 916             i_packet++;
 917             i_pos += i_packet_size + 6;
 918             pp_data = &(*pp_data)->p_next;
 919         }
 920     }
 921
 922     p_input->pf_delete_packet( p_input->p_method_data, p_data_p );
 923     *pp_data = NULL;
 924
 925     vlc_mutex_lock( &p_input->stream.stream_lock );
 926
 927     p_input->stream.p_selected_area->i_tell =
 928         LB2OFF( p_dvd->i_cur_block ) -
 929             p_input->stream.p_selected_area->i_start;
 930
 931     if( p_dvd->b_eoc )
 932     {
 933         /* We modify i_part only at end of chapter not to erase
 934          * some modification from the interface */
 935         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
 936         p_dvd->b_eoc = 0;
 937     }
 938
 939
 940     vlc_mutex_unlock( &p_input->stream.stream_lock );
 941
 942     return 0;
 943 }
 944 #undef p_pgc
 945
 946 /*****************************************************************************
 947  * DVDRewind : reads a stream backward
 948  *****************************************************************************/
 949 static int DvdReadRewind( input_thread_t * p_input )
 950 {
 951     return( -1 );
 952 }
 953
 954 /*****************************************************************************
 955  * DvdReadSeek : Goes to a given position on the stream.
 956  *****************************************************************************
 957  * This one is used by the input and translate chronological position from
 958  * input to logical position on the device.
 959  * The lock should be taken before calling this function.
 960  *****************************************************************************/
 961 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
 962 {
 963     thread_dvd_data_t *     p_dvd;
 964     int                     i_lb;
 965     int                     i_tmp;
 966     int                     i_chapter = 0;
 967     int                     i_cell = 0;
 968     int                     i_vobu = 0;
 969     int                     i_sub_cell = 0;
 970
 971     i_off += p_input->stream.p_selected_area->i_start;
 972     i_lb = OFF2LB( i_off );
 973     p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
 974
 975     /* find cell */
 976     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
 977     {
 978         i_cell++;
 979     }
 980
 981     /* find chapter */
 982     do
 983     {
 984         pgc_t *     p_pgc;
 985         int         pgc_id, pgn;
 986
 987         i_chapter++;
 988         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
 989                     p_dvd->i_ttn-1].ptt[i_chapter].pgcn;
 990         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
 991                     p_dvd->i_ttn-1].ptt[i_chapter].pgn;
 992
 993         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
 994         i_tmp = p_pgc->program_map[pgn-1];
 995
 996     } while( i_tmp <= i_cell );
 997
 998     /* find vobu */
 999     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1000             <= i_lb )
1001     {
1002         i_vobu++;
1003     }
1004
1005     /* find sub_cell */
1006     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1007             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1008     {
1009         i_sub_cell++;
1010     }
1011
1012 /*
1013     intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1014             i_cell, i_sub_cell,i_chapter, i_vobu,
1015             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1016             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1017             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1018 */
1019     p_dvd->i_cur_block = i_lb;
1020     p_dvd->i_next_vobu =
1021         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1022     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1023     p_dvd->i_cur_cell = i_cell;
1024     p_dvd->i_chapter = i_chapter;
1025     DvdReadFindCell( p_dvd );
1026
1027     p_input->stream.p_selected_area->i_tell =
1028         LB2OFF ( p_dvd->i_cur_block )
1029          - p_input->stream.p_selected_area->i_start;
1030     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1031
1032     return;
1033 }
1034
1035 /*****************************************************************************
1036  * DvdReadHandleDSI
1037  *****************************************************************************/
1038 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1039 {
1040     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1041
1042     /*
1043      * Determine where we go next.  These values are the ones we mostly
1044      * care about.
1045      */
1046     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1047
1048     /*
1049      * If we're not at the end of this cell, we can determine the next
1050      * VOBU to display using the VOBU_SRI information section of the
1051      * DSI.  Using this value correctly follows the current angle,
1052      * avoiding the doubled scenes in The Matrix, and makes our life
1053      * really happy.
1054      */
1055     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1056     {
1057 #if 1
1058         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1059         {
1060             case 0x4:
1061                 /* interleaved unit with no angle */
1062                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1063                 {
1064                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1065                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1066                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1067                 }
1068                 else
1069                 {
1070                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1071                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1072                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1073                 }
1074                 break;
1075             case 0x5:
1076                 /* vobu is end of ilvu */
1077                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1078                 {
1079                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1080                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1081                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1082
1083                     break;
1084                 }
1085             case 0x6:
1086                 /* vobu is beginning of ilvu */
1087             case 0x9:
1088                 /* next scr is 0 */
1089             case 0xa:
1090                 /* entering interleaved section */
1091             case 0x8:
1092                 /* non interleaved cells in interleaved section */
1093             default:
1094                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1095                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1096                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1097                 break;
1098         }
1099 #else
1100         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1101             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1102         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1103 #endif
1104     }
1105     else
1106     {
1107         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1108         DvdReadFindCell( p_dvd );
1109
1110         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1111         p_dvd->i_next_vobu =
1112             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1113     }
1114
1115 #if 0
1116     intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1117             p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1118             p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1119             p_dvd->dsi_pack.dsi_gi.vobu_ea,
1120             p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1121             p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1122
1123     intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1124             p_dvd->dsi_pack.sml_pbi.category,
1125             p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1126             p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1127             p_dvd->dsi_pack.sml_pbi.size );
1128
1129     intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1130             p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1131             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1132             p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1133 #endif
1134 }
1135
1136 /*****************************************************************************
1137  * DvdReadFindCell
1138  *****************************************************************************/
1139 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1140 {
1141     int         pgc_id, pgn;
1142     int         i = 0;
1143     pgc_t *     p_pgc;
1144 #define cell p_dvd->p_cur_pgc->cell_playback
1145     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1146     {
1147 #if 0
1148         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1149         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1150 #else
1151         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1152
1153         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1154         {
1155             i++;
1156         }
1157         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1158 #endif
1159     }
1160     else
1161     {
1162         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1163     }
1164 #undef cell
1165     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1166                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgcn;
1167     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1168                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter].pgn;
1169     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1170
1171     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1172     {
1173         p_dvd->i_chapter++;
1174         p_dvd->b_eoc = 1;
1175     }
1176 }