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 1.27 2002/03/04 23:34:16 stef 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 *****************************************************************************/
37 #include <videolan/vlc.h>
44 #include <sys/types.h>
50 #ifdef STRNCASECMP_IN_STRINGS_H
55 # include <io.h> /* read() */
57 # include <sys/uio.h> /* struct iovec */
61 # include "input_iovec.h"
64 #include "stream_control.h"
65 #include "input_ext-intf.h"
66 #include "input_ext-dec.h"
67 #include "input_ext-plugins.h"
69 #include "input_dvdread.h"
75 /* how many blocks DVDRead will read in each loop */
76 #define DVD_BLOCK_READ_ONCE 64
78 /*****************************************************************************
80 *****************************************************************************/
81 /* called from outside */
82 static int DvdReadInit ( struct input_thread_s * );
83 static void DvdReadEnd ( struct input_thread_s * );
84 static int DvdReadDemux ( struct input_thread_s * );
85 static int DvdReadRewind ( struct input_thread_s * );
87 static int DvdReadOpen ( struct input_thread_s * );
88 static void DvdReadClose ( struct input_thread_s * );
89 static int DvdReadSetArea ( struct input_thread_s *, struct input_area_s * );
90 static int DvdReadSetProgram( struct input_thread_s *, pgrm_descriptor_t * );
91 static int DvdReadRead ( struct input_thread_s *, byte_t *, size_t );
92 static void DvdReadSeek ( struct input_thread_s *, off_t );
94 /* called only from here */
95 static void DvdReadLauchDecoders( input_thread_t * p_input );
96 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
97 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
99 /*****************************************************************************
100 * Functions exported as capabilities. They are declared as static so that
101 * we don't pollute the namespace too much.
102 *****************************************************************************/
103 void _M( access_getfunctions )( function_list_t * p_function_list )
105 #define access p_function_list->functions.access
106 access.pf_open = DvdReadOpen;
107 access.pf_close = DvdReadClose;
108 access.pf_read = DvdReadRead;
109 access.pf_set_area = DvdReadSetArea;
110 access.pf_set_program = DvdReadSetProgram;
111 access.pf_seek = DvdReadSeek;
115 void _M( demux_getfunctions )( function_list_t * p_function_list )
117 #define demux p_function_list->functions.demux
118 demux.pf_init = DvdReadInit;
119 demux.pf_end = DvdReadEnd;
120 demux.pf_demux = DvdReadDemux;
121 demux.pf_rewind = DvdReadRewind;
126 * Data demux functions
129 /*****************************************************************************
130 * DvdReadInit: initializes DVD structures
131 *****************************************************************************/
132 static int DvdReadInit( input_thread_t * p_input )
134 if( strncmp( p_input->p_access_module->psz_name, "dvdread", 7 ) )
139 vlc_mutex_lock( &p_input->stream.stream_lock );
141 DvdReadLauchDecoders( p_input );
143 vlc_mutex_unlock( &p_input->stream.stream_lock );
148 /*****************************************************************************
149 * DvdReadEnd: frees unused data
150 *****************************************************************************/
151 static void DvdReadEnd( input_thread_t * p_input )
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 size_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 input_DemuxPS( 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 * DvdReadOpen: open libdvdread
236 *****************************************************************************/
237 static int DvdReadOpen( struct input_thread_s *p_input )
243 struct stat stat_info;
244 thread_dvd_data_t * p_dvd;
245 dvd_reader_t * p_dvdread;
246 input_area_t * p_area;
252 psz_orig = psz_parser = psz_source = strdup( p_input->psz_name );
258 while( *psz_parser && *psz_parser != '@' )
263 if( *psz_parser == '@' )
269 i_title = (int)strtol( psz_parser, &psz_next, 10 );
272 psz_parser = psz_next + 1;
273 i_chapter = (int)strtol( psz_parser, &psz_next, 10 );
276 i_angle = (int)strtol( psz_next + 1, NULL, 10 );
280 i_title = i_title ? i_title : 1;
281 i_chapter = i_chapter ? i_chapter : 1;
282 i_angle = i_angle ? i_angle : 1;
287 psz_source = config_GetPszVariable( INPUT_DVD_DEVICE_VAR );
290 if( stat( psz_source, &stat_info ) == -1 )
292 intf_ErrMsg( "input error: cannot stat() source `%s' (%s)",
293 psz_source, strerror(errno));
296 if( !S_ISBLK(stat_info.st_mode) &&
297 !S_ISCHR(stat_info.st_mode) &&
298 !S_ISDIR(stat_info.st_mode) )
300 intf_WarnMsg( 3, "input : DvdRead plugin discarded"
301 " (not a valid source)" );
305 intf_WarnMsg( 2, "input: dvdroot=%s title=%d chapter=%d angle=%d",
306 psz_source, i_title, i_chapter, i_angle );
309 p_dvdread = DVDOpen( psz_source );
311 /* free allocated strings */
312 if( psz_source != psz_orig )
318 intf_ErrMsg( "dvdread error: libdvdcss can't open source" );
325 p_dvd = malloc( sizeof(thread_dvd_data_t) );
328 intf_ErrMsg( "dvdread error: out of memory" );
332 p_dvd->p_dvdread = p_dvdread;
333 p_dvd->p_title = NULL;
334 p_dvd->p_vts_file = NULL;
336 p_dvd->i_title = i_title;
337 p_dvd->i_chapter = i_chapter;
338 p_dvd->i_angle = i_angle;
340 p_input->p_access_data = (void *)p_dvd;
342 /* Ifo allocation & initialisation */
343 if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
345 intf_ErrMsg( "dvdread error: can't open VMG info" );
349 intf_WarnMsg( 2, "dvdread info: VMG opened" );
351 /* Set stream and area data */
352 vlc_mutex_lock( &p_input->stream.stream_lock );
354 p_input->stream.i_method = INPUT_METHOD_DVD;
356 /* If we are here we can control the pace... */
357 p_input->stream.b_pace_control = 1;
358 p_input->stream.b_seekable = 1;
360 p_input->stream.p_selected_area->i_size = 0;
361 p_input->stream.p_selected_area->i_tell = 0;
363 /* Initialize ES structures */
364 input_InitStream( p_input, sizeof( stream_ps_data_t ) );
366 /* disc input method */
367 p_input->stream.i_method = INPUT_METHOD_DVD;
369 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
370 intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
372 #define area p_input->stream.pp_areas
373 /* We start from 1 here since the default area 0
374 * is reserved for video_ts.vob */
375 for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
377 input_AddArea( p_input );
379 /* Titles are Program Chains */
382 /* Absolute start offset and size
383 * We can only set that with vts ifo, so we do it during the
384 * first call to DVDSetArea */
385 area[i]->i_start = 0;
388 /* Number of chapters */
389 area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
392 /* Number of angles */
393 area[i]->i_angle_nb = 0;
394 area[i]->i_angle = 1;
396 area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
401 p_input->stream.pp_areas[i_title]->i_part = i_chapter;
403 p_area = p_input->stream.pp_areas[i_title];
405 /* set title, chapter, audio and subpic */
406 if( DvdReadSetArea( p_input, p_area ) )
408 vlc_mutex_unlock( &p_input->stream.stream_lock );
412 vlc_mutex_unlock( &p_input->stream.stream_lock );
417 /*****************************************************************************
418 * DvdReadClose: close libdvdread
419 *****************************************************************************/
420 static void DvdReadClose( struct input_thread_s *p_input )
422 thread_dvd_data_t * p_dvd;
424 p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
426 /* close libdvdread */
427 DVDCloseFile( p_dvd->p_title );
428 ifoClose( p_dvd->p_vts_file );
429 ifoClose( p_dvd->p_vmg_file );
431 DVDClose( p_dvd->p_dvdread );
433 p_input->p_access_data = NULL;
437 /*****************************************************************************
438 * DvdReadSetProgram: Does nothing, a DVD is mono-program
439 *****************************************************************************/
440 static int DvdReadSetProgram( input_thread_t * p_input,
441 pgrm_descriptor_t * p_program )
446 #define p_pgc p_dvd->p_cur_pgc
448 /*****************************************************************************
449 * DvdReadSetArea: initialize input data for title x, chapter y.
450 * It should be called for each user navigation request.
451 *****************************************************************************
452 * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
453 * Note that you have to take the lock before entering here.
454 *****************************************************************************/
455 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
457 thread_dvd_data_t * p_dvd;
461 p_dvd = (thread_dvd_data_t*)p_input->p_access_data;
463 /* we can't use the interface slider until initilization is complete */
464 p_input->stream.b_seekable = 0;
466 if( p_area != p_input->stream.p_selected_area )
468 es_descriptor_t * p_es;
474 #define p_vmg p_dvd->p_vmg_file
475 #define p_vts p_dvd->p_vts_file
476 if( p_dvd->p_title != NULL )
478 DVDCloseFile( p_dvd->p_title );
486 /* Reset the Chapter position of the old title */
487 p_input->stream.p_selected_area->i_part = 1;
490 * We have to load all title information
492 /* Change the default area */
493 p_input->stream.p_selected_area = p_area;
495 intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
496 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
500 if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
501 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
503 intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
505 DVDClose( p_dvd->p_dvdread );
509 /* title position inside the selected vts */
510 p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
513 * Set selected title start
515 pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
516 pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
517 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
518 i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
521 LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
523 intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
524 p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
529 i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
531 p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
532 p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
534 intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
535 p_area->i_start , p_area->i_size, p_dvd->i_end_block );
538 * Set properties for current chapter
540 /* Remeber current chapter */
541 p_dvd->i_chapter = p_area->i_part;
544 pgc_id = p_vts->vts_ptt_srpt->title[
545 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
546 pgn = p_vts->vts_ptt_srpt->title[
547 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
549 p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
550 p_dvd->i_pack_len = 0;
551 p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
552 DvdReadFindCell( p_dvd );
554 p_dvd->i_next_vobu = p_dvd->i_cur_block =
555 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
560 p_dvd->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
562 if( p_dvd->i_angle > p_area->i_angle_nb )
567 p_area->i_angle = p_dvd->i_angle;
568 p_area->i_angle_nb = p_dvd->i_angle_nb;
571 * We've got enough info, time to open the title set data.
573 if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
574 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
575 DVD_READ_TITLE_VOBS ) ) )
577 intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
578 p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
581 DVDClose( p_dvd->p_dvdread );
585 // IfoPrintTitle( p_dvd );
588 * Destroy obsolete ES by reinitializing program 0
589 * and find all ES in title with ifo data
591 if( p_input->stream.pp_programs != NULL )
593 /* We don't use input_EndStream here since
594 * we keep area structures */
596 for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
598 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
601 free( p_input->stream.pp_selected_es );
602 input_DelProgram( p_input, p_input->stream.p_selected_program );
604 p_input->stream.pp_selected_es = NULL;
605 p_input->stream.i_selected_es_number = 0;
608 input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
609 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
611 /* No PSM to read in DVD mode, we already have all information */
612 p_input->stream.p_selected_program->b_is_ok = 1;
616 /* ES 0 -> video MPEG2 */
617 // IfoPrintVideo( p_dvd );
619 p_es = input_AddES( p_input, p_input->stream.p_selected_program, 0xe0, 0 );
620 p_es->i_stream_id = 0xe0;
621 p_es->i_type = MPEG2_VIDEO_ES;
622 p_es->i_cat = VIDEO_ES;
624 #define audio_control \
625 p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
626 /* Audio ES, in the order they appear in .ifo */
627 for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
632 // IfoPrintAudio( p_dvd, i );
634 /* audio channel is active if first byte is 0x80 */
635 if( audio_control & 0x8000 )
638 i_position = ( audio_control & 0x7F00 ) >> 8;
640 intf_WarnMsg( 12, "dvd audio position %d", i_position );
641 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
644 i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
645 p_es = input_AddES( p_input,
646 p_input->stream.p_selected_program, i_id, 0 );
647 p_es->i_stream_id = 0xbd;
648 p_es->i_type = AC3_AUDIO_ES;
650 p_es->i_cat = AUDIO_ES;
651 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
652 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
653 strcat( p_es->psz_desc, " (ac3)" );
657 case 0x03: /* MPEG audio */
658 i_id = 0xc0 + i_position;
659 p_es = input_AddES( p_input,
660 p_input->stream.p_selected_program, i_id, 0 );
661 p_es->i_stream_id = i_id;
662 p_es->i_type = MPEG2_AUDIO_ES;
664 p_es->i_cat = AUDIO_ES;
665 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
666 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
667 strcat( p_es->psz_desc, " (mpeg)" );
670 case 0x04: /* LPCM */
672 i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
673 p_es = input_AddES( p_input,
674 p_input->stream.p_selected_program, i_id, 0 );
675 p_es->i_stream_id = i_id;
676 p_es->i_type = LPCM_AUDIO_ES;
678 p_es->i_cat = AUDIO_ES;
679 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
680 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
681 strcat( p_es->psz_desc, " (lpcm)" );
685 i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
686 intf_ErrMsg( "dvd warning: DTS audio not handled yet"
691 intf_ErrMsg( "dvd warning: unknown audio type %.2x",
692 p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
697 #define spu_control \
698 p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
702 for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
707 // IfoPrintSpu( p_dvd, i );
708 intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
710 if( spu_control & 0x80000000 )
714 /* there are several streams for one spu */
715 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
718 switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
721 i_position = spu_control & 0xff;
724 i_position = ( spu_control >> 8 ) & 0xff;
727 i_position = ( spu_control >> 16 ) & 0xff;
734 i_position = ( spu_control >> 24 ) & 0x7F;
737 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
738 p_es = input_AddES( p_input,
739 p_input->stream.p_selected_program, i_id, 0 );
740 p_es->i_stream_id = 0xbd;
741 p_es->i_type = DVD_SPU_ES;
742 p_es->i_cat = SPU_ES;
743 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
744 p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
749 /* FIXME: hack to check that the demuxer is ready, and set
751 if( p_input->p_demux_module )
753 DvdReadLauchDecoders( p_input );
759 p_area = p_input->stream.p_selected_area;
766 if( p_area->i_part != p_dvd->i_chapter )
768 if( ( p_area->i_part > 0 ) &&
769 ( p_area->i_part <= p_area->i_part_nb ))
771 p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
772 pgc_id = p_vts->vts_ptt_srpt->title[
773 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
774 pgn = p_vts->vts_ptt_srpt->title[
775 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
777 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
779 p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
780 p_dvd->i_chapter = p_area->i_part;
781 DvdReadFindCell( p_dvd );
783 p_dvd->i_pack_len = 0;
784 p_dvd->i_next_vobu = p_dvd->i_cur_block =
785 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
789 p_area->i_part = p_dvd->i_chapter;
795 if( p_area->i_angle != p_dvd->i_angle )
797 p_dvd->i_angle = p_area->i_angle;
799 intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
801 /* warn interface that something has changed */
802 p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
803 p_input->stream.b_seekable = 1;
804 p_input->stream.b_changed = 1;
810 /*****************************************************************************
811 * DvdReadRead: reads data packets into the netlist.
812 *****************************************************************************
813 * Returns -1 in case of error, 0 if everything went well, and 1 in case of
815 *****************************************************************************/
816 static int DvdReadRead( input_thread_t * p_input,
817 byte_t * p_buffer, size_t i_count )
819 thread_dvd_data_t * p_dvd;
827 p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
831 * Playback by cell in this pgc, starting at the cell for our chapter.
833 i_blocks = OFF2LB( i_count );
840 * End of pack, we select the following one
842 if( ! p_dvd->i_pack_len )
847 if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
850 intf_ErrMsg( "dvdread error: read failed for block %d",
851 p_dvd->i_next_vobu );
855 /* basic check to be sure we don't have a empty title
856 * go to next title if so */
857 //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
860 * Parse the contained dsi packet.
863 DvdReadHandleDSI( p_dvd, p_buf );
866 if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
871 assert( p_dvd->i_pack_len < 1024 );
872 /* FIXME: Ugly kludge: we send the pack block to the input for it
873 * sometimes has a zero scr and restart the sync */
874 p_dvd->i_cur_block ++;
875 //p_dvd->i_pack_len++;
878 p_buf += DVD_VIDEO_LB_LEN;
883 * Compute the number of blocks to read
885 i_blocks_once = p_dvd->i_pack_len >= i_blocks
886 ? i_blocks : p_dvd->i_pack_len;
887 p_dvd->i_pack_len -= i_blocks_once;
890 i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_cur_block,
891 i_blocks_once, p_buf );
892 if( i_read != i_blocks_once )
894 intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
895 i_read, i_blocks_once, p_dvd->i_cur_block );
900 i_read_total += i_read;
901 p_dvd->i_cur_block += i_read;
902 p_buf += LB2OFF( i_read );
906 intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
909 vlc_mutex_lock( &p_input->stream.stream_lock );
911 p_input->stream.p_selected_area->i_tell =
912 LB2OFF( p_dvd->i_cur_block ) -
913 p_input->stream.p_selected_area->i_start;
917 /* We modify i_part only at end of chapter not to erase
918 * some modification from the interface */
919 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
923 if( p_input->stream.p_selected_area->i_tell
924 >= p_input->stream.p_selected_area->i_size || b_eot )
926 if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
927 p_input->stream.i_area_nb )
930 vlc_mutex_unlock( &p_input->stream.stream_lock );
935 intf_WarnMsg( 4, "dvd info: new title" );
936 DvdReadSetArea( p_input, p_input->stream.pp_areas[
937 p_input->stream.p_selected_area->i_id+1] );
938 vlc_mutex_unlock( &p_input->stream.stream_lock );
942 vlc_mutex_unlock( &p_input->stream.stream_lock );
944 return LB2OFF( i_read_total );
948 /*****************************************************************************
949 * DvdReadSeek : Goes to a given position on the stream.
950 *****************************************************************************
951 * This one is used by the input and translate chronological position from
952 * input to logical position on the device.
953 * The lock should be taken before calling this function.
954 *****************************************************************************/
955 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
957 thread_dvd_data_t * p_dvd;
965 vlc_mutex_lock( &p_input->stream.stream_lock );
966 i_off += p_input->stream.p_selected_area->i_start;
967 vlc_mutex_unlock( &p_input->stream.stream_lock );
969 i_lb = OFF2LB( i_off );
970 p_dvd = ( thread_dvd_data_t * )p_input->p_access_data;
973 while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
985 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
986 p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
987 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
988 p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
990 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
991 i_tmp = p_pgc->program_map[pgn-1];
993 } while( i_tmp <= i_cell );
996 while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1003 while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1004 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1010 intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1011 i_cell, i_sub_cell,i_chapter, i_vobu,
1012 p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1013 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1014 p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1016 p_dvd->i_cur_block = i_lb;
1017 p_dvd->i_next_vobu =
1018 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1019 p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1020 p_dvd->i_cur_cell = i_cell;
1021 p_dvd->i_chapter = i_chapter;
1022 DvdReadFindCell( p_dvd );
1024 vlc_mutex_lock( &p_input->stream.stream_lock );
1025 p_input->stream.p_selected_area->i_tell =
1026 LB2OFF ( p_dvd->i_cur_block )
1027 - p_input->stream.p_selected_area->i_start;
1028 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1029 vlc_mutex_unlock( &p_input->stream.stream_lock );
1034 /*****************************************************************************
1036 *****************************************************************************/
1037 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1039 navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1042 * Determine where we go next. These values are the ones we mostly
1045 p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1048 * If we're not at the end of this cell, we can determine the next
1049 * VOBU to display using the VOBU_SRI information section of the
1050 * DSI. Using this value correctly follows the current angle,
1051 * avoiding the doubled scenes in The Matrix, and makes our life
1054 if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1057 switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1060 /* interleaved unit with no angle */
1061 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1063 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1064 p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1065 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1069 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1070 p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1071 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1075 /* vobu is end of ilvu */
1076 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1078 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1079 p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1080 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1085 /* vobu is beginning of ilvu */
1089 /* entering interleaved section */
1091 /* non interleaved cells in interleaved section */
1093 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1094 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1095 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1099 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1100 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1101 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1106 p_dvd->i_cur_cell = p_dvd->i_next_cell;
1107 DvdReadFindCell( p_dvd );
1109 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1110 p_dvd->i_next_vobu =
1111 p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1115 intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1116 p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1117 p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1118 p_dvd->dsi_pack.dsi_gi.vobu_ea,
1119 p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1120 p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1122 intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1123 p_dvd->dsi_pack.sml_pbi.category,
1124 p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1125 p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1126 p_dvd->dsi_pack.sml_pbi.size );
1128 intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1129 p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1130 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1131 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1135 /*****************************************************************************
1137 *****************************************************************************/
1138 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1143 #define cell p_dvd->p_cur_pgc->cell_playback
1144 if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1147 p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1148 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1150 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1152 while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1156 p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1161 p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1164 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1165 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1166 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1167 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1168 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1170 if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1177 /*****************************************************************************
1178 * DvdReadLaunchDecoders
1179 *****************************************************************************/
1180 static void DvdReadLauchDecoders( input_thread_t * p_input )
1182 thread_dvd_data_t * p_dvd;
1184 p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
1186 if( p_main->b_video )
1188 input_SelectES( p_input, p_input->stream.pp_es[0] );
1191 if( p_main->b_audio )
1193 /* For audio: first one if none or a not existing one specified */
1194 int i_audio = config_GetIntVariable( INPUT_CHANNEL_VAR );
1195 if( i_audio < 0 /*|| i_audio > i_audio_nb*/ )
1197 config_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
1200 if( i_audio > 0/* && i_audio_nb > 0*/ )
1202 if( config_GetIntVariable( AOUT_SPDIF_VAR ) ||
1203 ( config_GetIntVariable( INPUT_AUDIO_VAR ) ==
1206 int i_ac3 = i_audio;
1207 while( ( p_input->stream.pp_es[i_ac3]->i_type !=
1208 AC3_AUDIO_ES ) && ( i_ac3 <=
1209 p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams ) )
1213 if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
1215 input_SelectES( p_input,
1216 p_input->stream.pp_es[i_ac3] );
1221 input_SelectES( p_input,
1222 p_input->stream.pp_es[i_audio] );
1227 if( p_main->b_video )
1229 /* for spu, default is none */
1230 int i_spu = config_GetIntVariable( INPUT_SUBTITLE_VAR );
1231 if( i_spu < 0 /*|| i_spu > i_spu_nb*/ )
1233 config_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
1236 if( i_spu > 0 /*&& i_spu_nb > 0*/ )
1238 i_spu += p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams;
1239 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );