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 1.21 2002/02/24 20:51:09 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 *****************************************************************************/
37 #include <videolan/vlc.h>
44 #include <sys/types.h>
49 #ifdef STRNCASECMP_IN_STRINGS_H
54 # include <io.h> /* read() */
56 # include <sys/uio.h> /* struct iovec */
60 # include "input_iovec.h"
63 #include "stream_control.h"
64 #include "input_ext-intf.h"
65 #include "input_ext-dec.h"
66 #include "input_ext-plugins.h"
68 #include "input_dvdread.h"
74 /* how many blocks DVDRead will read in each loop */
75 #define DVD_BLOCK_READ_ONCE 64
77 /*****************************************************************************
79 *****************************************************************************/
80 /* called from outside */
81 static int DvdReadProbe ( struct input_thread_s * );
82 static void DvdReadInit ( struct input_thread_s * );
83 static void DvdReadEnd ( struct input_thread_s * );
84 static void DvdReadOpen ( struct input_thread_s * );
85 static void DvdReadClose ( struct input_thread_s * );
86 static int DvdReadSetArea ( struct input_thread_s *, struct input_area_s * );
87 static int DvdReadSetProgram( struct input_thread_s *, pgrm_descriptor_t * );
88 static int DvdReadRead ( struct input_thread_s *, data_packet_t ** );
89 static void DvdReadSeek ( struct input_thread_s *, off_t );
90 static int DvdReadRewind ( struct input_thread_s * );
92 /* called only from here */
93 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data );
94 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
96 /*****************************************************************************
97 * Declare a buffer manager
98 *****************************************************************************/
99 #define FLAGS BUFFERS_UNIQUE_SIZE
101 DECLARE_BUFFERS_SHARED( FLAGS, NB_LIFO );
102 DECLARE_BUFFERS_INIT( FLAGS, NB_LIFO );
103 DECLARE_BUFFERS_END_SHARED( FLAGS, NB_LIFO );
104 DECLARE_BUFFERS_NEWPACKET_SHARED( FLAGS, NB_LIFO );
105 DECLARE_BUFFERS_DELETEPACKET_SHARED( FLAGS, NB_LIFO, 1000 );
106 DECLARE_BUFFERS_NEWPES( FLAGS, NB_LIFO );
107 DECLARE_BUFFERS_DELETEPES( FLAGS, NB_LIFO, 1000 );
108 DECLARE_BUFFERS_TOIO( FLAGS, DVD_VIDEO_LB_LEN );
109 DECLARE_BUFFERS_SHAREBUFFER( FLAGS );
111 /*****************************************************************************
112 * Functions exported as capabilities. They are declared as static so that
113 * we don't pollute the namespace too much.
114 *****************************************************************************/
115 void _M( input_getfunctions )( function_list_t * p_function_list )
117 #define input p_function_list->functions.input
118 input.pf_probe = DvdReadProbe;
119 input.pf_init = DvdReadInit;
120 input.pf_open = DvdReadOpen;
121 input.pf_close = DvdReadClose;
122 input.pf_end = DvdReadEnd;
123 input.pf_init_bit_stream = InitBitstream;
124 input.pf_read = DvdReadRead;
125 input.pf_set_area = DvdReadSetArea;
126 input.pf_set_program = DvdReadSetProgram;
127 input.pf_demux = input_DemuxPS;
128 input.pf_new_packet = input_NewPacket;
129 input.pf_new_pes = input_NewPES;
130 input.pf_delete_packet = input_DeletePacket;
131 input.pf_delete_pes = input_DeletePES;
132 input.pf_rewind = DvdReadRewind;
133 input.pf_seek = DvdReadSeek;
139 * Data reading functions
142 /*****************************************************************************
143 * DvdReadProbe: verifies that the stream is a PS stream
144 *****************************************************************************/
145 static int DvdReadProbe( input_thread_t *p_input )
147 char * psz_name = p_input->p_source;
149 if((( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ))
150 ||(( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 )))
158 /*****************************************************************************
159 * DvdReadInit: initializes DVD structures
160 *****************************************************************************/
161 static void DvdReadInit( input_thread_t * p_input )
163 thread_dvd_data_t * p_dvd;
164 input_area_t * p_area;
169 p_dvd = malloc( sizeof(thread_dvd_data_t) );
172 intf_ErrMsg( "dvdread error: out of memory" );
173 p_input->b_error = 1;
177 /* we take the pointer to dvd_reader_t back */
178 p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
179 p_dvd->p_title = NULL;
180 p_dvd->p_vts_file = NULL;
182 p_input->p_plugin_data = (void *)p_dvd;
184 if( (p_input->p_method_data = input_BuffersInit()) == NULL )
187 p_input->b_error = 1;
191 /* We read DVD_BLOCK_READ_ONCE in each loop */
192 p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
194 /* Ifo allocation & initialisation */
195 if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
197 intf_ErrMsg( "dvdread error: can't open VMG info" );
198 input_BuffersEnd( p_input->p_method_data );
200 p_input->b_error = 1;
203 intf_WarnMsg( 2, "dvdread info: VMG opened" );
205 /* Set stream and area data */
206 vlc_mutex_lock( &p_input->stream.stream_lock );
208 /* Initialize ES structures */
209 input_InitStream( p_input, sizeof( stream_ps_data_t ) );
211 /* disc input method */
212 p_input->stream.i_method = INPUT_METHOD_DVD;
214 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
215 intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
217 #define area p_input->stream.pp_areas
218 /* We start from 1 here since the default area 0
219 * is reserved for video_ts.vob */
220 for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
222 input_AddArea( p_input );
224 /* Titles are Program Chains */
227 /* Absolute start offset and size
228 * We can only set that with vts ifo, so we do it during the
229 * first call to DVDSetArea */
230 area[i]->i_start = 0;
233 /* Number of chapters */
234 area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
237 /* Number of angles */
238 area[i]->i_angle_nb = 0;
239 area[i]->i_angle = 1;
241 area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
245 /* Get requested title - if none try the first title */
246 i_title = config_GetIntVariable( INPUT_TITLE_VAR );
247 if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
254 /* Get requested chapter - if none defaults to first one */
255 i_chapter = config_GetIntVariable( INPUT_CHAPTER_VAR );
261 p_input->stream.pp_areas[i_title]->i_part = i_chapter;
263 p_area = p_input->stream.pp_areas[i_title];
265 /* set title, chapter, audio and subpic */
266 DvdReadSetArea( p_input, p_area );
268 vlc_mutex_unlock( &p_input->stream.stream_lock );
273 /*****************************************************************************
274 * DvdReadOpen: open libdvdread
275 *****************************************************************************/
276 static void DvdReadOpen( struct input_thread_s *p_input )
278 dvd_reader_t *p_dvdread;
280 vlc_mutex_lock( &p_input->stream.stream_lock );
282 p_input->stream.i_method = INPUT_METHOD_DVD;
284 /* If we are here we can control the pace... */
285 p_input->stream.b_pace_control = 1;
286 p_input->stream.b_seekable = 1;
288 p_input->stream.p_selected_area->i_size = 0;
289 p_input->stream.p_selected_area->i_tell = 0;
291 vlc_mutex_unlock( &p_input->stream.stream_lock );
293 /* XXX: put this shit in an access plugin */
294 if( strlen( p_input->p_source ) > 8
295 && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
297 p_dvdread = DVDOpen( p_input->p_source + 8 );
299 else if( strlen( p_input->p_source ) > 4
300 && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
302 p_dvdread = DVDOpen( p_input->p_source + 4 );
306 p_dvdread = DVDOpen( p_input->p_source );
311 p_input->b_error = 1;
315 /* the vlc input doesn't handle the file descriptor with libdvdread */
316 p_input->i_handle = -1;
318 /* p_dvdread is stored in p_plugin_data until we have
319 * malloc'ed a dvd_thread_data_t */
320 p_input->p_plugin_data = (void *) p_dvdread;
323 /*****************************************************************************
324 * DvdReadClose: close libdvdread
325 *****************************************************************************/
326 static void DvdReadClose( struct input_thread_s *p_input )
328 DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
329 free( p_input->p_plugin_data );
330 p_input->p_plugin_data = NULL;
334 /*****************************************************************************
335 * DvdReadEnd: frees unused data
336 *****************************************************************************/
337 static void DvdReadEnd( input_thread_t * p_input )
339 thread_dvd_data_t * p_dvd;
341 p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
343 /* close libdvdread */
344 DVDCloseFile( p_dvd->p_title );
345 ifoClose( p_dvd->p_vts_file );
346 ifoClose( p_dvd->p_vmg_file );
348 input_BuffersEnd( p_input->p_method_data );
351 /*****************************************************************************
352 * DvdReadSetProgram: Does nothing, a DVD is mono-program
353 *****************************************************************************/
354 static int DvdReadSetProgram( input_thread_t * p_input,
355 pgrm_descriptor_t * p_program )
360 #define p_pgc p_dvd->p_cur_pgc
362 /*****************************************************************************
363 * DvdReadSetArea: initialize input data for title x, chapter y.
364 * It should be called for each user navigation request.
365 *****************************************************************************
366 * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
367 * Note that you have to take the lock before entering here.
368 *****************************************************************************/
369 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
371 thread_dvd_data_t * p_dvd;
375 p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
377 /* we can't use the interface slider until initilization is complete */
378 p_input->stream.b_seekable = 0;
380 if( p_area != p_input->stream.p_selected_area )
382 es_descriptor_t * p_es;
388 #define p_vmg p_dvd->p_vmg_file
389 #define p_vts p_dvd->p_vts_file
390 if( p_dvd->p_title != NULL )
392 DVDCloseFile( p_dvd->p_title );
400 /* Reset the Chapter position of the old title */
401 p_input->stream.p_selected_area->i_part = 1;
404 * We have to load all title information
406 /* Change the default area */
407 p_input->stream.p_selected_area = p_area;
409 intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
410 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
414 if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
415 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
417 intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
419 DVDClose( p_dvd->p_dvdread );
420 p_input->b_error = 1;
424 /* title position inside the selected vts */
425 p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
428 * Set selected title start
430 pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
431 pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
432 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
433 i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
436 LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
438 intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
439 p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
444 i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
446 p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
447 p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
449 intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
450 p_area->i_start , p_area->i_size, p_dvd->i_end_block );
453 * Set properties for current chapter
455 /* Remeber current chapter */
456 p_dvd->i_chapter = p_area->i_part;
459 pgc_id = p_vts->vts_ptt_srpt->title[
460 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
461 pgn = p_vts->vts_ptt_srpt->title[
462 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
464 p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
465 p_dvd->i_pack_len = 0;
466 p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
467 DvdReadFindCell( p_dvd );
469 p_dvd->i_next_vobu = p_dvd->i_cur_block =
470 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
475 p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
476 p_area->i_angle = config_GetIntVariable( INPUT_ANGLE_VAR );
478 if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
482 p_dvd->i_angle = p_area->i_angle;
483 p_dvd->i_angle_nb = p_area->i_angle_nb;
486 * We've got enough info, time to open the title set data.
488 if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
489 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
490 DVD_READ_TITLE_VOBS ) ) )
492 intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
493 p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
496 DVDClose( p_dvd->p_dvdread );
500 // IfoPrintTitle( p_dvd );
503 * Destroy obsolete ES by reinitializing program 0
504 * and find all ES in title with ifo data
506 if( p_input->stream.pp_programs != NULL )
508 /* We don't use input_EndStream here since
509 * we keep area structures */
511 for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
513 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
516 free( p_input->stream.pp_selected_es );
517 input_DelProgram( p_input, p_input->stream.p_selected_program );
519 p_input->stream.pp_selected_es = NULL;
520 p_input->stream.i_selected_es_number = 0;
523 input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
524 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
526 /* No PSM to read in DVD mode, we already have all information */
527 p_input->stream.p_selected_program->b_is_ok = 1;
531 /* ES 0 -> video MPEG2 */
532 // IfoPrintVideo( p_dvd );
534 p_es = input_AddES( p_input, p_input->stream.p_selected_program, 0xe0, 0 );
535 p_es->i_stream_id = 0xe0;
536 p_es->i_type = MPEG2_VIDEO_ES;
537 p_es->i_cat = VIDEO_ES;
538 if( p_main->b_video )
540 input_SelectES( p_input, p_es );
543 #define audio_control \
544 p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
545 /* Audio ES, in the order they appear in .ifo */
546 for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
551 // IfoPrintAudio( p_dvd, i );
553 /* audio channel is active if first byte is 0x80 */
554 if( audio_control & 0x8000 )
557 i_position = ( audio_control & 0x7F00 ) >> 8;
559 intf_WarnMsg( 12, "dvd audio position %d", i_position );
560 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
563 i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
564 p_es = input_AddES( p_input,
565 p_input->stream.p_selected_program, i_id, 0 );
566 p_es->i_stream_id = 0xbd;
567 p_es->i_type = AC3_AUDIO_ES;
569 p_es->i_cat = AUDIO_ES;
570 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
571 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
572 strcat( p_es->psz_desc, " (ac3)" );
576 case 0x03: /* MPEG audio */
577 i_id = 0xc0 + i_position;
578 p_es = input_AddES( p_input,
579 p_input->stream.p_selected_program, i_id, 0 );
580 p_es->i_stream_id = i_id;
581 p_es->i_type = MPEG2_AUDIO_ES;
583 p_es->i_cat = AUDIO_ES;
584 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
585 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
586 strcat( p_es->psz_desc, " (mpeg)" );
589 case 0x04: /* LPCM */
591 i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
592 p_es = input_AddES( p_input,
593 p_input->stream.p_selected_program, i_id, 0 );
594 p_es->i_stream_id = i_id;
595 p_es->i_type = LPCM_AUDIO_ES;
597 p_es->i_cat = AUDIO_ES;
598 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
599 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
600 strcat( p_es->psz_desc, " (lpcm)" );
604 i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
605 intf_ErrMsg( "dvd warning: DTS audio not handled yet"
610 intf_ErrMsg( "dvd warning: unknown audio type %.2x",
611 p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
616 #define spu_control \
617 p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
621 for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
626 // IfoPrintSpu( p_dvd, i );
627 intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
629 if( spu_control & 0x80000000 )
633 /* there are several streams for one spu */
634 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
637 switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
640 i_position = spu_control & 0xff;
643 i_position = ( spu_control >> 8 ) & 0xff;
646 i_position = ( spu_control >> 16 ) & 0xff;
653 i_position = ( spu_control >> 24 ) & 0x7F;
656 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
657 p_es = input_AddES( p_input,
658 p_input->stream.p_selected_program, i_id, 0 );
659 p_es->i_stream_id = 0xbd;
660 p_es->i_type = DVD_SPU_ES;
661 p_es->i_cat = SPU_ES;
662 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
663 p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
667 if( p_main->b_audio )
669 /* For audio: first one if none or a not existing one specified */
670 int i_audio = config_GetIntVariable( INPUT_CHANNEL_VAR );
671 if( i_audio < 0 || i_audio > i_audio_nb )
675 if( i_audio > 0 && i_audio_nb > 0 )
677 if( config_GetIntVariable( AOUT_SPDIF_VAR ) ||
678 ( config_GetIntVariable( INPUT_AUDIO_VAR ) ==
682 while( ( p_input->stream.pp_es[i_ac3]->i_type !=
683 AC3_AUDIO_ES ) && ( i_ac3 <=
684 p_vts->vtsi_mat->nr_of_vts_audio_streams ) )
688 if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
690 input_SelectES( p_input,
691 p_input->stream.pp_es[i_ac3] );
696 input_SelectES( p_input,
697 p_input->stream.pp_es[i_audio] );
702 if( p_main->b_video )
704 /* for spu, default is none */
705 int i_spu = config_GetIntVariable( INPUT_SUBTITLE_VAR );
706 if( i_spu < 0 || i_spu > i_spu_nb )
710 if( i_spu > 0 && i_spu_nb > 0 )
712 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
713 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
719 p_area = p_input->stream.p_selected_area;
726 if( p_area->i_part != p_dvd->i_chapter )
728 if( ( p_area->i_part > 0 ) &&
729 ( p_area->i_part <= p_area->i_part_nb ))
731 p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
732 pgc_id = p_vts->vts_ptt_srpt->title[
733 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
734 pgn = p_vts->vts_ptt_srpt->title[
735 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
737 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
739 p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
740 p_dvd->i_chapter = p_area->i_part;
741 DvdReadFindCell( p_dvd );
743 p_dvd->i_pack_len = 0;
744 p_dvd->i_next_vobu = p_dvd->i_cur_block =
745 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
749 p_area->i_part = p_dvd->i_chapter;
755 if( p_area->i_angle != p_dvd->i_angle )
757 p_dvd->i_angle = p_area->i_angle;
759 intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
761 /* warn interface that something has changed */
762 p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
763 p_input->stream.b_seekable = 1;
764 p_input->stream.b_changed = 1;
770 /*****************************************************************************
771 * DvdReadRead: reads data packets into the netlist.
772 *****************************************************************************
773 * Returns -1 in case of error, 0 if everything went well, and 1 in case of
775 *****************************************************************************/
776 static int DvdReadRead( input_thread_t * p_input,
777 data_packet_t ** pp_data )
779 thread_dvd_data_t * p_dvd;
780 u8 p_data[DVD_VIDEO_LB_LEN];
781 struct iovec p_vec[DVD_BLOCK_READ_ONCE];
789 data_packet_t * p_data_p;
792 p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
797 * Playback by cell in this pgc, starting at the cell for our chapter.
801 * End of pack, we select the following one
803 if( ! p_dvd->i_pack_len )
808 if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
811 intf_ErrMsg( "dvdread error: read failed for block %d",
812 p_dvd->i_next_vobu );
816 /* basic check to be sure we don't have a empty title
817 * go to next title if so */
818 assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
819 if( p_data[41] == 0xbf && p_data[1027] == 0xbf )
822 * Parse the contained dsi packet.
825 DvdReadHandleDSI( p_dvd, p_data );
828 if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
833 assert( p_dvd->i_pack_len < 1024 );
834 /* FIXME: Ugly kludge: we send the pack block to the input for it
835 * sometimes has a zero scr and restart the sync */
836 //p_dvd->i_cur_block ++;
842 p_dvd->i_pack_len = 0;
848 * Compute the number of blocks to read
850 i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
851 ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
852 p_dvd->i_pack_len -= i_blocks;
855 *pp_data = p_data_p = input_BuffersToIO( p_input->p_method_data, p_vec,
856 DVD_BLOCK_READ_ONCE );
858 if ( p_data_p == NULL )
864 i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
866 if( i_read != i_blocks )
868 intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
869 i_read, i_blocks, p_dvd->i_cur_block );
873 p_dvd->i_cur_block += i_read;
875 intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
879 /* Read headers to compute payload length */
880 for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
882 data_packet_t * p_current = p_data_p;
885 while( i_pos < DVD_VIDEO_LB_LEN )
887 pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
890 if( U32_AT( pi_cur ) != 0x1BA )
892 /* That's the case for all packets, except pack header. */
893 i_packet_size = U16_AT( pi_cur + 4 );
897 /* MPEG-2 Pack header. */
902 *pp_data = input_ShareBuffer( p_input->p_method_data,
908 p_data_p = p_data_p->p_next;
911 (*pp_data)->p_payload_start = (*pp_data)->p_demux_start =
912 (*pp_data)->p_demux_start + i_pos;
915 (*pp_data)->p_payload_end =
916 (*pp_data)->p_payload_start + i_packet_size + 6;
918 // pp_packets[i_packet]->p_next = NULL;
919 // pp_packets[i_packet]->b_discard_payload = 0;
922 i_pos += i_packet_size + 6;
923 pp_data = &(*pp_data)->p_next;
927 p_input->pf_delete_packet( p_input->p_method_data, p_data_p );
930 vlc_mutex_lock( &p_input->stream.stream_lock );
932 p_input->stream.p_selected_area->i_tell =
933 LB2OFF( p_dvd->i_cur_block ) -
934 p_input->stream.p_selected_area->i_start;
938 /* We modify i_part only at end of chapter not to erase
939 * some modification from the interface */
940 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
944 if( p_input->stream.p_selected_area->i_tell
945 >= p_input->stream.p_selected_area->i_size || b_eot )
947 if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
948 p_input->stream.i_area_nb )
951 vlc_mutex_unlock( &p_input->stream.stream_lock );
956 intf_WarnMsg( 4, "dvd info: new title" );
957 DvdReadSetArea( p_input, p_input->stream.pp_areas[
958 p_input->stream.p_selected_area->i_id+1] );
959 vlc_mutex_unlock( &p_input->stream.stream_lock );
963 vlc_mutex_unlock( &p_input->stream.stream_lock );
969 /*****************************************************************************
970 * DVDRewind : reads a stream backward
971 *****************************************************************************/
972 static int DvdReadRewind( input_thread_t * p_input )
977 /*****************************************************************************
978 * DvdReadSeek : Goes to a given position on the stream.
979 *****************************************************************************
980 * This one is used by the input and translate chronological position from
981 * input to logical position on the device.
982 * The lock should be taken before calling this function.
983 *****************************************************************************/
984 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
986 thread_dvd_data_t * p_dvd;
994 i_off += p_input->stream.p_selected_area->i_start;
995 i_lb = OFF2LB( i_off );
996 p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
999 while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
1011 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1012 p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1013 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1014 p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1016 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1017 i_tmp = p_pgc->program_map[pgn-1];
1019 } while( i_tmp <= i_cell );
1022 while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1029 while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1030 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1036 intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1037 i_cell, i_sub_cell,i_chapter, i_vobu,
1038 p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1039 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1040 p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1042 p_dvd->i_cur_block = i_lb;
1043 p_dvd->i_next_vobu =
1044 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1045 p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1046 p_dvd->i_cur_cell = i_cell;
1047 p_dvd->i_chapter = i_chapter;
1048 DvdReadFindCell( p_dvd );
1050 p_input->stream.p_selected_area->i_tell =
1051 LB2OFF ( p_dvd->i_cur_block )
1052 - p_input->stream.p_selected_area->i_start;
1053 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1058 /*****************************************************************************
1060 *****************************************************************************/
1061 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1063 navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1066 * Determine where we go next. These values are the ones we mostly
1069 p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1072 * If we're not at the end of this cell, we can determine the next
1073 * VOBU to display using the VOBU_SRI information section of the
1074 * DSI. Using this value correctly follows the current angle,
1075 * avoiding the doubled scenes in The Matrix, and makes our life
1078 if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1081 switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1084 /* interleaved unit with no angle */
1085 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1087 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1088 p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1089 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1093 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1094 p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1095 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1099 /* vobu is end of ilvu */
1100 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1102 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1103 p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1104 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1109 /* vobu is beginning of ilvu */
1113 /* entering interleaved section */
1115 /* non interleaved cells in interleaved section */
1117 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1118 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1119 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1123 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1124 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1125 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1130 p_dvd->i_cur_cell = p_dvd->i_next_cell;
1131 DvdReadFindCell( p_dvd );
1133 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1134 p_dvd->i_next_vobu =
1135 p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1139 intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1140 p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1141 p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1142 p_dvd->dsi_pack.dsi_gi.vobu_ea,
1143 p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1144 p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1146 intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1147 p_dvd->dsi_pack.sml_pbi.category,
1148 p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1149 p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1150 p_dvd->dsi_pack.sml_pbi.size );
1152 intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1153 p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1154 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1155 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1159 /*****************************************************************************
1161 *****************************************************************************/
1162 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1167 #define cell p_dvd->p_cur_pgc->cell_playback
1168 if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1171 p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1172 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1174 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1176 while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1180 p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1185 p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1188 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1189 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1190 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1191 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1192 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1194 if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )