1 /*****************************************************************************
2 * input.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, 2003 VideoLAN
9 * $Id: input.c,v 1.24 2004/03/03 20:39:51 gbazin Exp $
11 * Author: Stéphane Borel <stef@via.ecp.fr>
13 * Some code taken form the play_title.c by Billy Biggs <vektor@dumbterm.net>
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.
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.
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 *****************************************************************************/
31 /*****************************************************************************
33 *****************************************************************************/
38 #include <vlc/input.h>
40 #include "../../demux/mpeg/system.h"
47 #include <sys/types.h>
53 #ifdef STRNCASECMP_IN_STRINGS_H
58 # include <io.h> /* read() */
61 #include <dvdread/dvd_reader.h>
62 #include <dvdread/ifo_types.h>
63 #include <dvdread/ifo_read.h>
64 #include <dvdread/nav_read.h>
65 #include <dvdread/nav_print.h>
71 /* how many blocks DVDRead will read in each loop */
72 #define DVD_BLOCK_READ_ONCE 64
74 /*****************************************************************************
76 *****************************************************************************/
83 /*****************************************************************************
85 *****************************************************************************/
86 /* called from outside */
87 static int DvdReadDemux ( input_thread_t * );
88 static int DvdReadRewind ( input_thread_t * );
90 static int DvdReadSetArea ( input_thread_t *, input_area_t * );
91 static int DvdReadSetProgram ( input_thread_t *, pgrm_descriptor_t * );
92 static ssize_t DvdReadRead ( input_thread_t *, byte_t *, size_t );
93 static void DvdReadSeek ( input_thread_t *, off_t );
95 /* called only from here */
96 static void DvdReadLauchDecoders( input_thread_t * p_input );
97 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, uint8_t * p_data );
98 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
101 * Data demux functions
104 /*****************************************************************************
105 * InitDVD: initialize DVD structures
106 *****************************************************************************/
107 int E_(InitDVD) ( vlc_object_t *p_this )
109 input_thread_t *p_input = (input_thread_t *)p_this;
110 demux_sys_t * p_demux;
112 if( p_input->stream.i_method != INPUT_METHOD_DVD )
117 p_demux = p_input->p_demux_data = malloc( sizeof(demux_sys_t ) );
118 if( p_demux == NULL )
123 p_input->p_private = (void*)&p_demux->mpeg;
124 p_demux->p_module = module_Need( p_input, "mpeg-system", NULL, 0 );
125 if( p_demux->p_module == NULL )
127 free( p_input->p_demux_data );
131 p_input->pf_demux = DvdReadDemux;
132 p_input->pf_demux_control = demux_vaControlDefault;
133 p_input->pf_rewind = NULL;
135 vlc_mutex_lock( &p_input->stream.stream_lock );
137 DvdReadLauchDecoders( p_input );
139 vlc_mutex_unlock( &p_input->stream.stream_lock );
144 /*****************************************************************************
145 * EndDVD: end DVD structures
146 *****************************************************************************/
147 void E_(EndDVD) ( vlc_object_t *p_this )
149 input_thread_t *p_input = (input_thread_t *)p_this;
151 module_Unneed( p_input, p_input->p_demux_data->p_module );
152 free( p_input->p_demux_data );
155 /*****************************************************************************
157 *****************************************************************************/
158 #define PEEK( SIZE ) \
159 i_result = input_Peek( p_input, &p_peek, SIZE ); \
160 if( i_result == -1 ) \
164 else if( i_result < SIZE ) \
170 static int DvdReadDemux( input_thread_t * p_input )
174 data_packet_t * p_data;
179 /* Read headers to compute payload length */
180 for( i = 0 ; i < DVD_BLOCK_READ_ONCE ; i++ )
183 /* Read what we believe to be a packet header. */
187 if( U32_AT( p_peek ) != 0x1BA )
189 /* That's the case for all packets, except pack header. */
190 i_packet_size = U16_AT( p_peek + 4 );
194 /* MPEG-2 Pack header. */
198 /* Fetch a packet of the appropriate size. */
199 i_result = input_SplitBuffer( p_input, &p_data, i_packet_size + 6 );
205 /* In MPEG-2 pack headers we still have to read stuffing bytes. */
206 if( (p_data->p_demux_start[3] == 0xBA) && (i_packet_size == 8) )
208 ssize_t i_stuffing = (p_data->p_demux_start[13] & 0x7);
209 /* Force refill of the input buffer - though we don't care
210 * about p_peek. Please note that this is unoptimized. */
212 p_input->p_current_data += i_stuffing;
215 p_input->p_demux_data->mpeg.pf_demux_ps( p_input, p_data );
222 /*****************************************************************************
223 * DVDRewind : reads a stream backward
224 *****************************************************************************/
225 static int DvdReadRewind( input_thread_t * p_input )
231 * Data access functions
234 /*****************************************************************************
235 * OpenDVD: open libdvdread
236 *****************************************************************************/
237 int E_(OpenDVD) ( vlc_object_t *p_this )
239 input_thread_t * p_input = (input_thread_t *)p_this;
243 struct stat stat_info;
244 thread_dvd_data_t * p_dvd;
245 dvd_reader_t * p_dvdread;
246 input_area_t * p_area;
247 unsigned int i_title = 1;
248 unsigned int i_chapter = 1;
249 unsigned int i_angle = 1;
252 psz_source = strdup( p_input->psz_name );
253 if( psz_source == NULL )
258 p_input->pf_read = DvdReadRead;
259 p_input->pf_seek = DvdReadSeek;
260 p_input->pf_set_area = DvdReadSetArea;
261 p_input->pf_set_program = DvdReadSetProgram;
263 /* Start with the end, because you could have :
264 * dvdread:/Volumes/my@toto/VIDEO_TS@1,1
265 * (yes, this is kludgy). */
266 for ( psz_parser = psz_source + strlen(psz_source) - 1;
267 psz_parser >= psz_source && *psz_parser != '@';
270 if( psz_parser >= psz_source && *psz_parser == '@' )
276 i_title = (int)strtol( psz_parser, &psz_next, 10 );
279 psz_parser = psz_next + 1;
280 i_chapter = (int)strtol( psz_parser, &psz_next, 10 );
283 i_angle = (int)strtol( psz_next + 1, NULL, 10 );
287 i_title = i_title ? i_title : 1;
288 i_chapter = i_chapter ? i_chapter : 1;
289 i_angle = i_angle ? i_angle : 1;
295 if( !p_input->psz_access )
299 psz_source = config_GetPsz( p_input, "dvd" );
300 if( !psz_source ) return VLC_EGENERIC;
303 if( stat( psz_source, &stat_info ) == -1 )
305 msg_Warn( p_input, "cannot stat() source `%s' (%s)",
306 psz_source, strerror(errno) );
310 if( !S_ISBLK(stat_info.st_mode) &&
311 !S_ISCHR(stat_info.st_mode) &&
312 !S_ISDIR(stat_info.st_mode) )
314 msg_Warn( p_input, "dvdread module discarded (not a valid source)" );
319 msg_Dbg( p_input, "dvdroot=%s title=%d chapter=%d angle=%d",
320 psz_source, i_title, i_chapter, i_angle );
323 p_dvdread = DVDOpen( psz_source );
325 /* free allocated strings */
330 msg_Err( p_input, "libdvdcss cannot open source" );
337 p_dvd = malloc( sizeof(thread_dvd_data_t) );
340 msg_Err( p_input, "out of memory" );
344 p_dvd->p_dvdread = p_dvdread;
345 p_dvd->p_title = NULL;
346 p_dvd->p_vts_file = NULL;
349 p_input->p_access_data = (void *)p_dvd;
351 /* Ifo allocation & initialisation */
352 if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
354 msg_Warn( p_input, "cannot open VMG info" );
358 msg_Dbg( p_input, "VMG opened" );
360 /* Set stream and area data */
361 vlc_mutex_lock( &p_input->stream.stream_lock );
363 p_input->stream.i_method = INPUT_METHOD_DVD;
365 /* If we are here we can control the pace... */
366 p_input->stream.b_pace_control = VLC_TRUE;
367 p_input->stream.b_seekable = VLC_TRUE;
369 p_input->stream.p_selected_area->i_size = 0;
370 p_input->stream.p_selected_area->i_tell = 0;
372 /* Initialize ES structures */
373 input_InitStream( p_input, sizeof( stream_ps_data_t ) );
375 /* disc input method */
376 p_input->stream.i_method = INPUT_METHOD_DVD;
378 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
379 msg_Dbg( p_input, "number of titles: %d", tt_srpt->nr_of_srpts );
381 #define area p_input->stream.pp_areas
382 /* We start from 1 here since the default area 0
383 * is reserved for video_ts.vob */
384 for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
386 /* Titles are Program Chains */
387 input_AddArea( p_input, i, tt_srpt->title[i-1].nr_of_ptts );
389 /* Absolute start offset and size
390 * We can only set that with vts ifo, so we do it during the
391 * first call to DVDSetArea */
392 area[i]->i_start = 0;
395 /* Default Chapter */
398 area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
402 p_dvd->i_title = i_title <= tt_srpt->nr_of_srpts ? i_title : 1;
405 p_area = p_input->stream.pp_areas[p_dvd->i_title];
406 p_dvd->i_chapter = i_chapter;
408 p_dvd->i_chapter = i_chapter < p_area->i_part_nb ? i_chapter : 1;
409 p_area->i_part = p_dvd->i_chapter;
411 p_dvd->i_angle = i_angle;
413 /* set title, chapter, audio and subpic */
414 if( DvdReadSetArea( p_input, p_area ) )
416 vlc_mutex_unlock( &p_input->stream.stream_lock );
420 vlc_mutex_unlock( &p_input->stream.stream_lock );
422 if( !p_input->psz_demux || !*p_input->psz_demux )
424 p_input->psz_demux = "dvdread";
430 /*****************************************************************************
431 * CloseDVD: close libdvdread
432 *****************************************************************************/
433 void E_(CloseDVD) ( vlc_object_t *p_this )
435 input_thread_t * p_input = (input_thread_t *)p_this;
436 thread_dvd_data_t * p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
438 /* This is a very nasty side-effect in the DVD plug-in : language
439 * selection here influences language selection of other streams. So
440 * unset those variables (may not be what the user wants).
441 * FIXME FIXME FIXME FIXME FIXME FIXME FIXME --Meuuh */
442 config_PutInt( p_input, "audio-channel", -1 );
443 config_PutInt( p_input, "spu-channel", -1 );
445 /* close libdvdread */
446 DVDCloseFile( p_dvd->p_title );
447 ifoClose( p_dvd->p_vts_file );
448 ifoClose( p_dvd->p_vmg_file );
450 DVDClose( p_dvd->p_dvdread );
452 p_input->p_access_data = NULL;
456 /*****************************************************************************
457 * DvdReadSetProgram: Does nothing, a DVD is mono-program
458 *****************************************************************************/
459 static int DvdReadSetProgram( input_thread_t * p_input,
460 pgrm_descriptor_t * p_program )
462 if( p_input->stream.p_selected_program != p_program )
464 thread_dvd_data_t * p_dvd;
467 p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
468 p_dvd->i_angle = p_program->i_number;
470 memcpy( p_program, p_input->stream.p_selected_program,
471 sizeof(pgrm_descriptor_t) );
472 p_program->i_number = p_dvd->i_angle;
473 p_input->stream.p_selected_program = p_program;
475 msg_Dbg( p_input, "angle %d selected", p_dvd->i_angle );
477 /* Update the navigation variables without triggering a callback */
478 val.i_int = p_program->i_number;
479 var_Change( p_input, "program", VLC_VAR_SETVALUE, &val, NULL );
485 #define p_pgc p_dvd->p_cur_pgc
487 /*****************************************************************************
488 * DvdReadSetArea: initialize input data for title x, chapter y.
489 * It should be called for each user navigation request.
490 *****************************************************************************
491 * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
492 * Note that you have to take the lock before entering here.
493 *****************************************************************************/
494 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
496 thread_dvd_data_t * p_dvd;
501 p_dvd = (thread_dvd_data_t*)p_input->p_access_data;
503 /* we can't use the interface slider until initilization is complete */
504 p_input->stream.b_seekable = VLC_FALSE;
506 if( p_area != p_input->stream.p_selected_area )
508 es_descriptor_t * p_es;
509 unsigned int i_cell = 0;
510 unsigned int i_audio_nb = 0;
511 unsigned int i_spu_nb = 0;
514 #define p_vmg p_dvd->p_vmg_file
515 #define p_vts p_dvd->p_vts_file
516 if( p_dvd->p_title != NULL )
518 DVDCloseFile( p_dvd->p_title );
526 /* Reset the Chapter position of the old title */
527 p_input->stream.p_selected_area->i_part = 1;
530 * We have to load all title information
532 /* Change the default area */
533 p_input->stream.p_selected_area = p_area;
535 msg_Dbg( p_input, "open VTS %d, for title %d",
536 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
540 if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
541 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
543 msg_Err( p_input, "fatal error in vts ifo" );
545 DVDClose( p_dvd->p_dvdread );
549 /* title position inside the selected vts */
550 p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
553 * Set selected title start
555 pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
556 pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
557 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
558 i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
561 LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
563 msg_Dbg( p_input, "start %d vts_title %d pgc %d pgn %d",
564 p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
569 i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
571 p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
572 p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
574 msg_Dbg( p_input, "start "I64Fd" size "I64Fd" end %d",
575 p_area->i_start , p_area->i_size, p_dvd->i_end_block );
578 * Set properties for current chapter
580 /* Remeber current chapter */
581 p_dvd->i_chapter = p_area->i_part;
582 p_dvd->b_eoc = VLC_FALSE;
584 pgc_id = p_vts->vts_ptt_srpt->title[
585 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
586 pgn = p_vts->vts_ptt_srpt->title[
587 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
589 p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
590 p_dvd->i_pack_len = 0;
591 p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
592 DvdReadFindCell( p_dvd );
594 p_dvd->i_next_vobu = p_dvd->i_cur_block =
595 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
600 p_dvd->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
602 if( p_dvd->i_angle > p_dvd->i_angle_nb )
608 * We've got enough info, time to open the title set data.
610 if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
611 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
612 DVD_READ_TITLE_VOBS ) ) )
614 msg_Err( p_input, "cannot open title (VTS_%02d_1.VOB)",
615 p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
618 DVDClose( p_dvd->p_dvdread );
622 // IfoPrintTitle( p_dvd );
625 * Destroy obsolete ES by reinitializing program 0
626 * and find all ES in title with ifo data
628 if( p_input->stream.pp_programs != NULL )
630 /* We don't use input_EndStream here since
631 * we keep area structures */
633 while( p_input->stream.i_es_number )
635 input_DelES( p_input, p_input->stream.pp_es[0] );
638 while( p_input->stream.i_pgrm_number )
640 input_DelProgram( p_input, p_input->stream.pp_programs[0] );
643 if( p_input->stream.pp_selected_es )
645 free( p_input->stream.pp_selected_es );
646 p_input->stream.pp_selected_es = NULL;
648 p_input->stream.i_selected_es_number = 0;
651 input_AddProgram( p_input, 1, sizeof( stream_ps_data_t ) );
652 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
654 for( i = 1 ; i < p_dvd->i_angle_nb ; i++ )
656 input_AddProgram( p_input, i+1, 0 );
659 DvdReadSetProgram( p_input,
660 p_input->stream.pp_programs[p_dvd->i_angle-1] );
662 /* No PSM to read in DVD mode, we already have all information */
663 p_input->stream.p_selected_program->b_is_ok = VLC_TRUE;
667 /* ES 0 -> video MPEG2 */
668 // IfoPrintVideo( p_dvd );
670 p_es = input_AddES( p_input, NULL, 0xe0, VIDEO_ES, NULL, 0 );
671 p_es->i_stream_id = 0xe0;
672 p_es->i_fourcc = VLC_FOURCC('m','p','g','v');
674 #define audio_control \
675 p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
676 /* Audio ES, in the order they appear in .ifo */
677 for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
682 // IfoPrintAudio( p_dvd, i );
684 /* audio channel is active if first byte is 0x80 */
685 if( audio_control & 0x8000 )
688 i_position = ( audio_control & 0x7F00 ) >> 8;
690 msg_Dbg( p_input, "audio position %d", i_position );
691 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
694 i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
695 p_es = input_AddES( p_input, NULL, i_id, AUDIO_ES,
697 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ), 0 );
698 p_es->i_stream_id = 0xbd;
699 p_es->i_fourcc = VLC_FOURCC('a','5','2','b');
703 case 0x03: /* MPEG audio */
704 i_id = 0xc0 + i_position;
705 p_es = input_AddES( p_input, NULL, i_id, AUDIO_ES,
707 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ), 0 );
708 p_es->i_stream_id = i_id;
709 p_es->i_fourcc = VLC_FOURCC('m','p','g','a');
712 case 0x04: /* LPCM */
714 i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
715 p_es = input_AddES( p_input, NULL, i_id, AUDIO_ES,
717 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ), 0 );
718 p_es->i_stream_id = i_id;
719 p_es->i_fourcc = VLC_FOURCC('l','p','c','b');
723 i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
724 msg_Err( p_input, "DTS audio not handled yet"
729 msg_Err( p_input, "unknown audio type %.2x",
730 p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
735 #define spu_control \
736 p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
740 for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
745 // IfoPrintSpu( p_dvd, i );
746 msg_Dbg( p_input, "spu %d 0x%02x", i, spu_control );
748 if( spu_control & 0x80000000 )
752 /* there are several streams for one spu */
753 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
756 switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
759 i_position = spu_control & 0xff;
762 i_position = ( spu_control >> 8 ) & 0xff;
765 i_position = ( spu_control >> 16 ) & 0xff;
772 i_position = ( spu_control >> 24 ) & 0x7F;
775 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
776 p_es = input_AddES( p_input, NULL, i_id, SPU_ES,
778 p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ), 0 );
779 p_es->i_stream_id = 0xbd;
780 p_es->i_fourcc = VLC_FOURCC('s','p','u','b');
785 /* FIXME: hack to check that the demuxer is ready, and set
787 if( p_input->p_demux )
789 DvdReadLauchDecoders( p_input );
792 /* Update the navigation variables without triggering a callback */
793 val.i_int = p_area->i_id;
794 var_Change( p_input, "title", VLC_VAR_SETVALUE, &val, NULL );
795 var_Change( p_input, "chapter", VLC_VAR_CLEARCHOICES, NULL, NULL );
796 for( i = 1; i <= p_area->i_part_nb; i++ )
799 var_Change( p_input, "chapter", VLC_VAR_ADDCHOICE, &val, NULL );
805 p_area = p_input->stream.p_selected_area;
812 if( p_area->i_part != p_dvd->i_chapter )
814 if( ( p_area->i_part > 0 ) &&
815 ( p_area->i_part <= p_area->i_part_nb ))
817 p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
818 pgc_id = p_vts->vts_ptt_srpt->title[
819 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
820 pgn = p_vts->vts_ptt_srpt->title[
821 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
823 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
825 p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
826 p_dvd->i_chapter = p_area->i_part;
827 DvdReadFindCell( p_dvd );
829 p_dvd->i_pack_len = 0;
830 p_dvd->i_next_vobu = p_dvd->i_cur_block =
831 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
835 p_area->i_part = p_dvd->i_chapter;
841 /* warn interface that something has changed */
842 p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
843 p_input->stream.b_seekable = VLC_TRUE;
844 p_input->stream.b_changed = VLC_TRUE;
846 /* Update the navigation variables without triggering a callback */
847 val.i_int = p_area->i_part;
848 var_Change( p_input, "chapter", VLC_VAR_SETVALUE, &val, NULL );
854 /*****************************************************************************
855 * DvdReadRead: reads data packets.
856 *****************************************************************************
857 * Returns -1 in case of error, 0 in case of EOF, otherwise the number of
859 *****************************************************************************/
860 static ssize_t DvdReadRead( input_thread_t * p_input,
861 byte_t * p_buffer, size_t i_count )
863 thread_dvd_data_t * p_dvd;
865 unsigned int i_blocks_once;
866 unsigned int i_blocks;
869 vlc_bool_t b_eot = VLC_FALSE;
871 p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
875 * Playback by cell in this pgc, starting at the cell for our chapter.
877 i_blocks = OFF2LB( i_count );
884 * End of pack, we select the following one
886 if( ! p_dvd->i_pack_len )
891 if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
894 msg_Err( p_input, "read failed for block %d",
895 p_dvd->i_next_vobu );
899 /* basic check to be sure we don't have a empty title
900 * go to next title if so */
901 //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
904 * Parse the contained dsi packet.
907 DvdReadHandleDSI( p_dvd, p_buf );
910 if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
916 assert( p_dvd->i_pack_len < 1024 );
917 /* FIXME: Ugly kludge: we send the pack block to the input for it
918 * sometimes has a zero scr and restart the sync */
919 p_dvd->i_cur_block ++;
920 //p_dvd->i_pack_len++;
923 p_buf += DVD_VIDEO_LB_LEN;
928 * Compute the number of blocks to read
930 i_blocks_once = __MIN( p_dvd->i_pack_len, i_blocks );
931 p_dvd->i_pack_len -= i_blocks_once;
934 i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_cur_block,
935 i_blocks_once, p_buf );
936 if( (unsigned int)i_read != i_blocks_once )
938 msg_Err( p_input, "read failed for %d/%d blocks at 0x%02x",
939 i_read, i_blocks_once, p_dvd->i_cur_block );
944 i_read_total += i_read;
945 p_dvd->i_cur_block += i_read;
946 p_buf += LB2OFF( i_read );
950 msg_Dbg( p_input, "i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
953 vlc_mutex_lock( &p_input->stream.stream_lock );
957 /* We modify i_part only at end of chapter not to erase
958 * some modification from the interface */
959 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
960 p_dvd->b_eoc = VLC_FALSE;
963 if( ( LB2OFF( p_dvd->i_cur_block )
964 - p_input->stream.p_selected_area->i_start )
965 >= p_input->stream.p_selected_area->i_size || b_eot )
967 if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
968 p_input->stream.i_area_nb )
971 vlc_mutex_unlock( &p_input->stream.stream_lock );
976 msg_Dbg( p_input, "new title" );
977 DvdReadSetArea( p_input, p_input->stream.pp_areas[
978 p_input->stream.p_selected_area->i_id+1] );
981 vlc_mutex_unlock( &p_input->stream.stream_lock );
983 return LB2OFF( i_read_total );
987 /*****************************************************************************
988 * DvdReadSeek : Goes to a given position on the stream.
989 *****************************************************************************
990 * This one is used by the input and translate chronological position from
991 * input to logical position on the device.
992 * The lock should be taken before calling this function.
993 *****************************************************************************/
994 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
996 thread_dvd_data_t * p_dvd;
999 unsigned int i_chapter = 0;
1000 unsigned int i_cell = 0;
1001 unsigned int i_vobu = 0;
1002 unsigned int i_sub_cell = 0;
1004 vlc_mutex_lock( &p_input->stream.stream_lock );
1005 i_off += p_input->stream.p_selected_area->i_start;
1006 vlc_mutex_unlock( &p_input->stream.stream_lock );
1008 i_lb = OFF2LB( i_off );
1009 p_dvd = ( thread_dvd_data_t * )p_input->p_access_data;
1012 while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
1024 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1025 p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1026 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1027 p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1029 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1030 i_tmp = p_pgc->program_map[pgn-1];
1032 } while( i_tmp <= i_cell );
1035 while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1042 while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1043 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1049 msg_Dbg( p_input, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1050 i_cell, i_sub_cell,i_chapter, i_vobu,
1051 p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1052 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1053 p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1055 p_dvd->i_cur_block = i_lb;
1056 p_dvd->i_next_vobu =
1057 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1058 p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1059 p_dvd->i_cur_cell = i_cell;
1060 p_dvd->i_chapter = i_chapter;
1061 DvdReadFindCell( p_dvd );
1063 vlc_mutex_lock( &p_input->stream.stream_lock );
1064 p_input->stream.p_selected_area->i_tell =
1065 LB2OFF ( p_dvd->i_cur_block )
1066 - p_input->stream.p_selected_area->i_start;
1067 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1068 vlc_mutex_unlock( &p_input->stream.stream_lock );
1073 /*****************************************************************************
1075 *****************************************************************************/
1076 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, uint8_t * p_data )
1078 navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1081 * Determine where we go next. These values are the ones we mostly
1084 p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1087 * If we're not at the end of this cell, we can determine the next
1088 * VOBU to display using the VOBU_SRI information section of the
1089 * DSI. Using this value correctly follows the current angle,
1090 * avoiding the doubled scenes in The Matrix, and makes our life
1093 if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1096 switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1099 /* interleaved unit with no angle */
1100 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != 0 )
1102 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1103 p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1104 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1108 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1109 p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1110 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1114 /* vobu is end of ilvu */
1115 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1117 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1118 p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1119 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1124 /* vobu is beginning of ilvu */
1128 /* entering interleaved section */
1130 /* non interleaved cells in interleaved section */
1132 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1133 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1134 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1138 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1139 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1140 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1145 p_dvd->i_cur_cell = p_dvd->i_next_cell;
1146 DvdReadFindCell( p_dvd );
1148 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1149 p_dvd->i_next_vobu =
1150 p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1154 msg_Dbg( p_input, 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1155 p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1156 p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1157 p_dvd->dsi_pack.dsi_gi.vobu_ea,
1158 p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1159 p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1161 msg_Dbg( p_input, 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1162 p_dvd->dsi_pack.sml_pbi.category,
1163 p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1164 p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1165 p_dvd->dsi_pack.sml_pbi.size );
1167 msg_Dbg( p_input, 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1168 p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1169 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1170 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1174 /*****************************************************************************
1176 *****************************************************************************/
1177 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1182 #define cell p_dvd->p_cur_pgc->cell_playback
1183 if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1186 p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1187 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1189 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1191 while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1195 p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1200 p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1203 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1204 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1205 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1206 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1207 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1209 if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1212 p_dvd->b_eoc = VLC_TRUE;
1216 /*****************************************************************************
1217 * DvdReadLaunchDecoders
1218 *****************************************************************************/
1219 static void DvdReadLauchDecoders( input_thread_t * p_input )
1221 thread_dvd_data_t * p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
1224 input_SelectES( p_input, p_input->stream.pp_es[0] );
1226 /* For audio: first one if none or a not existing one specified */
1227 i_audio = config_GetInt( p_input, "audio-channel" );
1228 if( i_audio < 0 /*|| i_audio > i_audio_nb*/ )
1230 config_PutInt( p_input, "audio-channel", 1 );
1233 if( i_audio > 0/* && i_audio_nb > 0*/ )
1235 if( config_GetInt( p_input, "audio-type" ) == REQUESTED_A52 )
1237 int i_a52 = i_audio;
1238 while( ( p_input->stream.pp_es[i_a52]->i_fourcc !=
1239 VLC_FOURCC('a','5','2','b') ) && ( i_a52 <=
1240 p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams ) )
1244 if( p_input->stream.pp_es[i_a52]->i_fourcc
1245 == VLC_FOURCC('a','5','2','b') )
1247 input_SelectES( p_input, p_input->stream.pp_es[i_a52] );
1252 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
1256 /* for spu, default is none */
1257 i_spu = config_GetInt( p_input, "spu-channel" );
1258 if( i_spu < 0 /*|| i_spu > i_spu_nb*/ )
1260 config_PutInt( p_input, "spu-channel", 0 );
1263 if( i_spu > 0 /*&& i_spu_nb > 0*/ )
1265 i_spu += p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams;
1266 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );