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 1.19 2003/03/24 17:15:29 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 int 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 );
125 if( p_demux->p_module == NULL )
127 free( p_input->p_demux_data );
131 p_input->pf_demux = DvdReadDemux;
132 p_input->pf_rewind = NULL;
134 vlc_mutex_lock( &p_input->stream.stream_lock );
136 DvdReadLauchDecoders( p_input );
138 vlc_mutex_unlock( &p_input->stream.stream_lock );
143 /*****************************************************************************
144 * EndDVD: end DVD structures
145 *****************************************************************************/
146 void E_(EndDVD) ( vlc_object_t *p_this )
148 input_thread_t *p_input = (input_thread_t *)p_this;
150 module_Unneed( p_input, p_input->p_demux_data->p_module );
151 free( p_input->p_demux_data );
154 /*****************************************************************************
156 *****************************************************************************/
157 #define PEEK( SIZE ) \
158 i_result = input_Peek( p_input, &p_peek, SIZE ); \
159 if( i_result == -1 ) \
163 else if( i_result < SIZE ) \
169 static int DvdReadDemux( input_thread_t * p_input )
173 data_packet_t * p_data;
178 /* Read headers to compute payload length */
179 for( i = 0 ; i < DVD_BLOCK_READ_ONCE ; i++ )
182 /* Read what we believe to be a packet header. */
186 if( U32_AT( p_peek ) != 0x1BA )
188 /* That's the case for all packets, except pack header. */
189 i_packet_size = U16_AT( p_peek + 4 );
193 /* MPEG-2 Pack header. */
197 /* Fetch a packet of the appropriate size. */
198 i_result = input_SplitBuffer( p_input, &p_data, i_packet_size + 6 );
204 /* In MPEG-2 pack headers we still have to read stuffing bytes. */
205 if( (p_data->p_demux_start[3] == 0xBA) && (i_packet_size == 8) )
207 ssize_t i_stuffing = (p_data->p_demux_start[13] & 0x7);
208 /* Force refill of the input buffer - though we don't care
209 * about p_peek. Please note that this is unoptimized. */
211 p_input->p_current_data += i_stuffing;
214 p_input->p_demux_data->mpeg.pf_demux_ps( p_input, p_data );
221 /*****************************************************************************
222 * DVDRewind : reads a stream backward
223 *****************************************************************************/
224 static int DvdReadRewind( input_thread_t * p_input )
230 * Data access functions
233 /*****************************************************************************
234 * OpenDVD: open libdvdread
235 *****************************************************************************/
236 int E_(OpenDVD) ( vlc_object_t *p_this )
238 input_thread_t * p_input = (input_thread_t *)p_this;
242 struct stat stat_info;
243 thread_dvd_data_t * p_dvd;
244 dvd_reader_t * p_dvdread;
245 input_area_t * p_area;
246 unsigned int i_title = 1;
247 unsigned int i_chapter = 1;
248 unsigned int i_angle = 1;
251 psz_source = strdup( p_input->psz_name );
252 if( psz_source == NULL )
257 p_input->pf_read = DvdReadRead;
258 p_input->pf_seek = DvdReadSeek;
259 p_input->pf_set_area = DvdReadSetArea;
260 p_input->pf_set_program = DvdReadSetProgram;
262 /* Start with the end, because you could have :
263 * dvdread:/Volumes/my@toto/VIDEO_TS@1,1
264 * (yes, this is kludgy). */
265 for ( psz_parser = psz_source + strlen(psz_source) - 1;
266 psz_parser >= psz_source && *psz_parser != '@';
269 if( psz_parser >= psz_source && *psz_parser == '@' )
275 i_title = (int)strtol( psz_parser, &psz_next, 10 );
278 psz_parser = psz_next + 1;
279 i_chapter = (int)strtol( psz_parser, &psz_next, 10 );
282 i_angle = (int)strtol( psz_next + 1, NULL, 10 );
286 i_title = i_title ? i_title : 1;
287 i_chapter = i_chapter ? i_chapter : 1;
288 i_angle = i_angle ? i_angle : 1;
294 if( !p_input->psz_access )
298 psz_source = config_GetPsz( p_input, "dvd" );
299 if( !psz_source ) return VLC_EGENERIC;
302 if( stat( psz_source, &stat_info ) == -1 )
304 msg_Warn( p_input, "cannot stat() source `%s' (%s)",
305 psz_source, strerror(errno) );
309 if( !S_ISBLK(stat_info.st_mode) &&
310 !S_ISCHR(stat_info.st_mode) &&
311 !S_ISDIR(stat_info.st_mode) )
313 msg_Warn( p_input, "dvdread module discarded (not a valid source)" );
318 msg_Dbg( p_input, "dvdroot=%s title=%d chapter=%d angle=%d",
319 psz_source, i_title, i_chapter, i_angle );
322 p_dvdread = DVDOpen( psz_source );
324 /* free allocated strings */
329 msg_Err( p_input, "libdvdcss cannot open source" );
336 p_dvd = malloc( sizeof(thread_dvd_data_t) );
339 msg_Err( p_input, "out of memory" );
343 p_dvd->p_dvdread = p_dvdread;
344 p_dvd->p_title = NULL;
345 p_dvd->p_vts_file = NULL;
348 p_input->p_access_data = (void *)p_dvd;
350 /* Ifo allocation & initialisation */
351 if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
353 msg_Warn( p_input, "cannot open VMG info" );
357 msg_Dbg( p_input, "VMG opened" );
359 /* Set stream and area data */
360 vlc_mutex_lock( &p_input->stream.stream_lock );
362 p_input->stream.i_method = INPUT_METHOD_DVD;
364 /* If we are here we can control the pace... */
365 p_input->stream.b_pace_control = VLC_TRUE;
366 p_input->stream.b_seekable = VLC_TRUE;
368 p_input->stream.p_selected_area->i_size = 0;
369 p_input->stream.p_selected_area->i_tell = 0;
371 /* Initialize ES structures */
372 input_InitStream( p_input, sizeof( stream_ps_data_t ) );
374 /* disc input method */
375 p_input->stream.i_method = INPUT_METHOD_DVD;
377 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
378 msg_Dbg( p_input, "number of titles: %d", tt_srpt->nr_of_srpts );
380 #define area p_input->stream.pp_areas
381 /* We start from 1 here since the default area 0
382 * is reserved for video_ts.vob */
383 for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
385 /* Titles are Program Chains */
386 input_AddArea( p_input, i, tt_srpt->title[i-1].nr_of_ptts );
388 /* Absolute start offset and size
389 * We can only set that with vts ifo, so we do it during the
390 * first call to DVDSetArea */
391 area[i]->i_start = 0;
394 /* Default Chapter */
397 area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
401 p_dvd->i_title = i_title <= tt_srpt->nr_of_srpts ? i_title : 1;
404 p_area = p_input->stream.pp_areas[p_dvd->i_title];
405 p_dvd->i_chapter = i_chapter;
407 p_dvd->i_chapter = i_chapter < p_area->i_part_nb ? i_chapter : 1;
408 p_area->i_part = p_dvd->i_chapter;
410 p_dvd->i_angle = i_angle;
412 /* set title, chapter, audio and subpic */
413 if( DvdReadSetArea( p_input, p_area ) )
415 vlc_mutex_unlock( &p_input->stream.stream_lock );
419 vlc_mutex_unlock( &p_input->stream.stream_lock );
421 if( !p_input->psz_demux || !*p_input->psz_demux )
423 p_input->psz_demux = "dvdread";
429 /*****************************************************************************
430 * CloseDVD: close libdvdread
431 *****************************************************************************/
432 void E_(CloseDVD) ( vlc_object_t *p_this )
434 input_thread_t * p_input = (input_thread_t *)p_this;
435 thread_dvd_data_t * p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
437 /* This is a very nasty side-effect in the DVD plug-in : language
438 * selection here influences language selection of other streams. So
439 * unset those variables (may not be what the user wants).
440 * FIXME FIXME FIXME FIXME FIXME FIXME FIXME --Meuuh */
441 config_PutInt( p_input, "audio-channel", -1 );
442 config_PutInt( p_input, "spu-channel", -1 );
444 /* close libdvdread */
445 DVDCloseFile( p_dvd->p_title );
446 ifoClose( p_dvd->p_vts_file );
447 ifoClose( p_dvd->p_vmg_file );
449 DVDClose( p_dvd->p_dvdread );
451 p_input->p_access_data = NULL;
455 /*****************************************************************************
456 * DvdReadSetProgram: Does nothing, a DVD is mono-program
457 *****************************************************************************/
458 static int DvdReadSetProgram( input_thread_t * p_input,
459 pgrm_descriptor_t * p_program )
461 if( p_input->stream.p_selected_program != p_program )
463 thread_dvd_data_t * p_dvd;
466 p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
467 p_dvd->i_angle = p_program->i_number;
469 memcpy( p_program, p_input->stream.p_selected_program,
470 sizeof(pgrm_descriptor_t) );
471 p_program->i_number = p_dvd->i_angle;
472 p_input->stream.p_selected_program = p_program;
474 msg_Dbg( p_input, "angle %d selected", p_dvd->i_angle );
476 /* Update the navigation variables without triggering a callback */
477 val.i_int = p_program->i_number;
478 var_Change( p_input, "program", VLC_VAR_SETVALUE, &val );
484 #define p_pgc p_dvd->p_cur_pgc
486 /*****************************************************************************
487 * DvdReadSetArea: initialize input data for title x, chapter y.
488 * It should be called for each user navigation request.
489 *****************************************************************************
490 * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
491 * Note that you have to take the lock before entering here.
492 *****************************************************************************/
493 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
495 thread_dvd_data_t * p_dvd;
500 p_dvd = (thread_dvd_data_t*)p_input->p_access_data;
502 /* we can't use the interface slider until initilization is complete */
503 p_input->stream.b_seekable = VLC_FALSE;
505 if( p_area != p_input->stream.p_selected_area )
507 es_descriptor_t * p_es;
508 unsigned int i_cell = 0;
509 unsigned int i_audio_nb = 0;
510 unsigned int i_spu_nb = 0;
513 #define p_vmg p_dvd->p_vmg_file
514 #define p_vts p_dvd->p_vts_file
515 if( p_dvd->p_title != NULL )
517 DVDCloseFile( p_dvd->p_title );
525 /* Reset the Chapter position of the old title */
526 p_input->stream.p_selected_area->i_part = 1;
529 * We have to load all title information
531 /* Change the default area */
532 p_input->stream.p_selected_area = p_area;
534 msg_Dbg( p_input, "open VTS %d, for title %d",
535 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
539 if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
540 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
542 msg_Err( p_input, "fatal error in vts ifo" );
544 DVDClose( p_dvd->p_dvdread );
548 /* title position inside the selected vts */
549 p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
552 * Set selected title start
554 pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
555 pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
556 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
557 i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
560 LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
562 msg_Dbg( p_input, "start %d vts_title %d pgc %d pgn %d",
563 p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
568 i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
570 p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
571 p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
573 msg_Dbg( p_input, "start "I64Fd" size "I64Fd" end %d",
574 p_area->i_start , p_area->i_size, p_dvd->i_end_block );
577 * Set properties for current chapter
579 /* Remeber current chapter */
580 p_dvd->i_chapter = p_area->i_part;
581 p_dvd->b_eoc = VLC_FALSE;
583 pgc_id = p_vts->vts_ptt_srpt->title[
584 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
585 pgn = p_vts->vts_ptt_srpt->title[
586 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
588 p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
589 p_dvd->i_pack_len = 0;
590 p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
591 DvdReadFindCell( p_dvd );
593 p_dvd->i_next_vobu = p_dvd->i_cur_block =
594 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
599 p_dvd->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
601 if( p_dvd->i_angle > p_dvd->i_angle_nb )
607 * We've got enough info, time to open the title set data.
609 if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
610 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
611 DVD_READ_TITLE_VOBS ) ) )
613 msg_Err( p_input, "cannot open title (VTS_%02d_1.VOB)",
614 p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
617 DVDClose( p_dvd->p_dvdread );
621 // IfoPrintTitle( p_dvd );
624 * Destroy obsolete ES by reinitializing program 0
625 * and find all ES in title with ifo data
627 if( p_input->stream.pp_programs != NULL )
629 /* We don't use input_EndStream here since
630 * we keep area structures */
632 while( p_input->stream.i_es_number )
634 input_DelES( p_input, p_input->stream.pp_es[0] );
637 while( p_input->stream.i_pgrm_number )
639 input_DelProgram( p_input, p_input->stream.pp_programs[0] );
642 if( p_input->stream.pp_selected_es )
644 free( p_input->stream.pp_selected_es );
645 p_input->stream.pp_selected_es = NULL;
647 p_input->stream.i_selected_es_number = 0;
650 input_AddProgram( p_input, 1, sizeof( stream_ps_data_t ) );
651 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
653 for( i = 1 ; i < p_dvd->i_angle_nb ; i++ )
655 input_AddProgram( p_input, i+1, 0 );
658 DvdReadSetProgram( p_input,
659 p_input->stream.pp_programs[p_dvd->i_angle-1] );
661 /* No PSM to read in DVD mode, we already have all information */
662 p_input->stream.p_selected_program->b_is_ok = VLC_TRUE;
666 /* ES 0 -> video MPEG2 */
667 // IfoPrintVideo( p_dvd );
669 p_es = input_AddES( p_input, NULL, 0xe0, 0 );
670 p_es->i_stream_id = 0xe0;
671 p_es->i_fourcc = VLC_FOURCC('m','p','g','v');
672 p_es->i_cat = VIDEO_ES;
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, 0 );
696 p_es->i_stream_id = 0xbd;
697 p_es->i_fourcc = VLC_FOURCC('a','5','2','b');
698 p_es->i_cat = AUDIO_ES;
699 strcpy( p_es->psz_desc, DecodeLanguage(
700 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) );
701 strcat( p_es->psz_desc, " (A52)" );
705 case 0x03: /* MPEG audio */
706 i_id = 0xc0 + i_position;
707 p_es = input_AddES( p_input, NULL, i_id, 0 );
708 p_es->i_stream_id = i_id;
709 p_es->i_fourcc = VLC_FOURCC('m','p','g','a');
710 p_es->i_cat = AUDIO_ES;
711 strcpy( p_es->psz_desc, DecodeLanguage(
712 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) );
713 strcat( p_es->psz_desc, " (mpeg)" );
716 case 0x04: /* LPCM */
718 i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
719 p_es = input_AddES( p_input, NULL, i_id, 0 );
720 p_es->i_stream_id = i_id;
721 p_es->i_fourcc = VLC_FOURCC('l','p','c','b');
722 p_es->i_cat = AUDIO_ES;
723 strcpy( p_es->psz_desc, DecodeLanguage(
724 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) );
725 strcat( p_es->psz_desc, " (lpcm)" );
729 i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
730 msg_Err( p_input, "DTS audio not handled yet"
735 msg_Err( p_input, "unknown audio type %.2x",
736 p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
741 #define spu_control \
742 p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
746 for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
751 // IfoPrintSpu( p_dvd, i );
752 msg_Dbg( p_input, "spu %d 0x%02x", i, spu_control );
754 if( spu_control & 0x80000000 )
758 /* there are several streams for one spu */
759 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
762 switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
765 i_position = spu_control & 0xff;
768 i_position = ( spu_control >> 8 ) & 0xff;
771 i_position = ( spu_control >> 16 ) & 0xff;
778 i_position = ( spu_control >> 24 ) & 0x7F;
781 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
782 p_es = input_AddES( p_input, NULL, i_id, 0 );
783 p_es->i_stream_id = 0xbd;
784 p_es->i_fourcc = VLC_FOURCC('s','p','u','b');
785 p_es->i_cat = SPU_ES;
786 strcpy( p_es->psz_desc, DecodeLanguage(
787 p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) );
792 /* FIXME: hack to check that the demuxer is ready, and set
794 if( p_input->p_demux )
796 DvdReadLauchDecoders( p_input );
799 /* Update the navigation variables without triggering a callback */
800 val.i_int = p_area->i_id;
801 var_Change( p_input, "title", VLC_VAR_SETVALUE, &val );
802 var_Change( p_input, "chapter", VLC_VAR_CLEARCHOICES, NULL );
803 for( i = 1; i <= p_area->i_part_nb; i++ )
806 var_Change( p_input, "chapter", VLC_VAR_ADDCHOICE, &val );
812 p_area = p_input->stream.p_selected_area;
819 if( p_area->i_part != p_dvd->i_chapter )
821 if( ( p_area->i_part > 0 ) &&
822 ( p_area->i_part <= p_area->i_part_nb ))
824 p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
825 pgc_id = p_vts->vts_ptt_srpt->title[
826 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
827 pgn = p_vts->vts_ptt_srpt->title[
828 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
830 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
832 p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
833 p_dvd->i_chapter = p_area->i_part;
834 DvdReadFindCell( p_dvd );
836 p_dvd->i_pack_len = 0;
837 p_dvd->i_next_vobu = p_dvd->i_cur_block =
838 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
842 p_area->i_part = p_dvd->i_chapter;
848 /* warn interface that something has changed */
849 p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
850 p_input->stream.b_seekable = VLC_TRUE;
851 p_input->stream.b_changed = VLC_TRUE;
853 /* Update the navigation variables without triggering a callback */
854 val.i_int = p_area->i_part;
855 var_Change( p_input, "chapter", VLC_VAR_SETVALUE, &val );
861 /*****************************************************************************
862 * DvdReadRead: reads data packets.
863 *****************************************************************************
864 * Returns -1 in case of error, 0 in case of EOF, otherwise the number of
866 *****************************************************************************/
867 static int DvdReadRead( input_thread_t * p_input,
868 byte_t * p_buffer, size_t i_count )
870 thread_dvd_data_t * p_dvd;
872 unsigned int i_blocks_once;
873 unsigned int i_blocks;
876 vlc_bool_t b_eot = VLC_FALSE;
878 p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
882 * Playback by cell in this pgc, starting at the cell for our chapter.
884 i_blocks = OFF2LB( i_count );
891 * End of pack, we select the following one
893 if( ! p_dvd->i_pack_len )
898 if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
901 msg_Err( p_input, "read failed for block %d",
902 p_dvd->i_next_vobu );
906 /* basic check to be sure we don't have a empty title
907 * go to next title if so */
908 //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
911 * Parse the contained dsi packet.
914 DvdReadHandleDSI( p_dvd, p_buf );
917 if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
923 assert( p_dvd->i_pack_len < 1024 );
924 /* FIXME: Ugly kludge: we send the pack block to the input for it
925 * sometimes has a zero scr and restart the sync */
926 p_dvd->i_cur_block ++;
927 //p_dvd->i_pack_len++;
930 p_buf += DVD_VIDEO_LB_LEN;
935 * Compute the number of blocks to read
937 i_blocks_once = __MIN( p_dvd->i_pack_len, i_blocks );
938 p_dvd->i_pack_len -= i_blocks_once;
941 i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_cur_block,
942 i_blocks_once, p_buf );
943 if( (unsigned int)i_read != i_blocks_once )
945 msg_Err( p_input, "read failed for %d/%d blocks at 0x%02x",
946 i_read, i_blocks_once, p_dvd->i_cur_block );
951 i_read_total += i_read;
952 p_dvd->i_cur_block += i_read;
953 p_buf += LB2OFF( i_read );
957 msg_Dbg( p_input, "i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
960 vlc_mutex_lock( &p_input->stream.stream_lock );
964 /* We modify i_part only at end of chapter not to erase
965 * some modification from the interface */
966 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
967 p_dvd->b_eoc = VLC_FALSE;
970 if( ( LB2OFF( p_dvd->i_cur_block )
971 - p_input->stream.p_selected_area->i_start )
972 >= p_input->stream.p_selected_area->i_size || b_eot )
974 if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
975 p_input->stream.i_area_nb )
978 vlc_mutex_unlock( &p_input->stream.stream_lock );
983 msg_Dbg( p_input, "new title" );
984 DvdReadSetArea( p_input, p_input->stream.pp_areas[
985 p_input->stream.p_selected_area->i_id+1] );
988 vlc_mutex_unlock( &p_input->stream.stream_lock );
990 return LB2OFF( i_read_total );
994 /*****************************************************************************
995 * DvdReadSeek : Goes to a given position on the stream.
996 *****************************************************************************
997 * This one is used by the input and translate chronological position from
998 * input to logical position on the device.
999 * The lock should be taken before calling this function.
1000 *****************************************************************************/
1001 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
1003 thread_dvd_data_t * p_dvd;
1006 unsigned int i_chapter = 0;
1007 unsigned int i_cell = 0;
1008 unsigned int i_vobu = 0;
1009 unsigned int i_sub_cell = 0;
1011 vlc_mutex_lock( &p_input->stream.stream_lock );
1012 i_off += p_input->stream.p_selected_area->i_start;
1013 vlc_mutex_unlock( &p_input->stream.stream_lock );
1015 i_lb = OFF2LB( i_off );
1016 p_dvd = ( thread_dvd_data_t * )p_input->p_access_data;
1019 while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
1031 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1032 p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1033 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1034 p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1036 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1037 i_tmp = p_pgc->program_map[pgn-1];
1039 } while( i_tmp <= i_cell );
1042 while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1049 while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1050 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1056 msg_Dbg( p_input, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1057 i_cell, i_sub_cell,i_chapter, i_vobu,
1058 p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1059 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1060 p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1062 p_dvd->i_cur_block = i_lb;
1063 p_dvd->i_next_vobu =
1064 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1065 p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1066 p_dvd->i_cur_cell = i_cell;
1067 p_dvd->i_chapter = i_chapter;
1068 DvdReadFindCell( p_dvd );
1070 vlc_mutex_lock( &p_input->stream.stream_lock );
1071 p_input->stream.p_selected_area->i_tell =
1072 LB2OFF ( p_dvd->i_cur_block )
1073 - p_input->stream.p_selected_area->i_start;
1074 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1075 vlc_mutex_unlock( &p_input->stream.stream_lock );
1080 /*****************************************************************************
1082 *****************************************************************************/
1083 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, uint8_t * p_data )
1085 navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1088 * Determine where we go next. These values are the ones we mostly
1091 p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1094 * If we're not at the end of this cell, we can determine the next
1095 * VOBU to display using the VOBU_SRI information section of the
1096 * DSI. Using this value correctly follows the current angle,
1097 * avoiding the doubled scenes in The Matrix, and makes our life
1100 if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1103 switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1106 /* interleaved unit with no angle */
1107 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != 0 )
1109 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1110 p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1111 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1115 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1116 p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1117 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1121 /* vobu is end of ilvu */
1122 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1124 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1125 p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1126 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1131 /* vobu is beginning of ilvu */
1135 /* entering interleaved section */
1137 /* non interleaved cells in interleaved section */
1139 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1140 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1141 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1145 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1146 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1147 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1152 p_dvd->i_cur_cell = p_dvd->i_next_cell;
1153 DvdReadFindCell( p_dvd );
1155 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1156 p_dvd->i_next_vobu =
1157 p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1161 msg_Dbg( p_input, 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1162 p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1163 p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1164 p_dvd->dsi_pack.dsi_gi.vobu_ea,
1165 p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1166 p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1168 msg_Dbg( p_input, 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1169 p_dvd->dsi_pack.sml_pbi.category,
1170 p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1171 p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1172 p_dvd->dsi_pack.sml_pbi.size );
1174 msg_Dbg( p_input, 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1175 p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1176 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1177 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1181 /*****************************************************************************
1183 *****************************************************************************/
1184 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1189 #define cell p_dvd->p_cur_pgc->cell_playback
1190 if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1193 p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1194 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1196 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1198 while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1202 p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1207 p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1210 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1211 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1212 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1213 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1214 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1216 if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1219 p_dvd->b_eoc = VLC_TRUE;
1223 /*****************************************************************************
1224 * DvdReadLaunchDecoders
1225 *****************************************************************************/
1226 static void DvdReadLauchDecoders( input_thread_t * p_input )
1228 thread_dvd_data_t * p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
1231 input_SelectES( p_input, p_input->stream.pp_es[0] );
1233 /* For audio: first one if none or a not existing one specified */
1234 i_audio = config_GetInt( p_input, "audio-channel" );
1235 if( i_audio < 0 /*|| i_audio > i_audio_nb*/ )
1237 config_PutInt( p_input, "audio-channel", 1 );
1240 if( i_audio > 0/* && i_audio_nb > 0*/ )
1242 if( config_GetInt( p_input, "audio-type" ) == REQUESTED_A52 )
1244 int i_a52 = i_audio;
1245 while( ( p_input->stream.pp_es[i_a52]->i_fourcc !=
1246 VLC_FOURCC('a','5','2','b') ) && ( i_a52 <=
1247 p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams ) )
1251 if( p_input->stream.pp_es[i_a52]->i_fourcc
1252 == VLC_FOURCC('a','5','2','b') )
1254 input_SelectES( p_input, p_input->stream.pp_es[i_a52] );
1259 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
1263 /* for spu, default is none */
1264 i_spu = config_GetInt( p_input, "spu-channel" );
1265 if( i_spu < 0 /*|| i_spu > i_spu_nb*/ )
1267 config_PutInt( p_input, "spu-channel", 0 );
1270 if( i_spu > 0 /*&& i_spu_nb > 0*/ )
1272 i_spu += p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams;
1273 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );