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 1.14 2001/12/31 01:13:12 massiot 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 ( probedata_t *p_data );
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 p_function_list->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( probedata_t *p_data )
147 input_thread_t * p_input = (input_thread_t *)p_data;
149 char * psz_name = p_input->p_source;
152 if( ( strlen(psz_name) > 8 ) && !strncasecmp( psz_name, "dvdread:", 8 ) )
154 /* If the user specified "dvdread:" then he probably wants
155 * to use libdvdread */
163 /*****************************************************************************
164 * DvdReadInit: initializes DVD structures
165 *****************************************************************************/
166 static void DvdReadInit( input_thread_t * p_input )
168 thread_dvd_data_t * p_dvd;
169 input_area_t * p_area;
174 p_dvd = malloc( sizeof(thread_dvd_data_t) );
177 intf_ErrMsg( "dvdread error: out of memory" );
178 p_input->b_error = 1;
182 /* we take the pointer to dvd_reader_t back */
183 p_dvd->p_dvdread = (dvd_reader_t *)p_input->p_plugin_data;
184 p_dvd->p_title = NULL;
185 p_dvd->p_vts_file = NULL;
187 p_input->p_plugin_data = (void *)p_dvd;
189 if( (p_input->p_method_data = input_BuffersInit()) == NULL )
192 p_input->b_error = 1;
196 /* We read DVD_BLOCK_READ_ONCE in each loop */
197 p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
199 /* Ifo allocation & initialisation */
200 if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
202 intf_ErrMsg( "dvdread error: can't open VMG info" );
203 input_BuffersEnd( p_input->p_method_data );
205 p_input->b_error = 1;
208 intf_WarnMsg( 2, "dvdread info: VMG opened" );
210 /* Set stream and area data */
211 vlc_mutex_lock( &p_input->stream.stream_lock );
213 /* Initialize ES structures */
214 input_InitStream( p_input, sizeof( stream_ps_data_t ) );
216 /* disc input method */
217 p_input->stream.i_method = INPUT_METHOD_DVD;
219 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
220 intf_WarnMsg( 2, "dvdread info: number of titles: %d", tt_srpt->nr_of_srpts );
222 #define area p_input->stream.pp_areas
223 /* We start from 1 here since the default area 0
224 * is reserved for video_ts.vob */
225 for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
227 input_AddArea( p_input );
229 /* Titles are Program Chains */
232 /* Absolute start offset and size
233 * We can only set that with vts ifo, so we do it during the
234 * first call to DVDSetArea */
235 area[i]->i_start = 0;
238 /* Number of chapters */
239 area[i]->i_part_nb = tt_srpt->title[i-1].nr_of_ptts;
242 /* Number of angles */
243 area[i]->i_angle_nb = 0;
244 area[i]->i_angle = 1;
246 area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
250 /* Get requested title - if none try the first title */
251 i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
252 if( i_title <= 0 || i_title > tt_srpt->nr_of_srpts )
259 /* Get requested chapter - if none defaults to first one */
260 i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
266 p_input->stream.pp_areas[i_title]->i_part = i_chapter;
268 p_area = p_input->stream.pp_areas[i_title];
270 /* set title, chapter, audio and subpic */
271 DvdReadSetArea( p_input, p_area );
273 vlc_mutex_unlock( &p_input->stream.stream_lock );
278 /*****************************************************************************
279 * DvdReadOpen: open libdvdread
280 *****************************************************************************/
281 static void DvdReadOpen( struct input_thread_s *p_input )
283 dvd_reader_t *p_dvdread;
285 vlc_mutex_lock( &p_input->stream.stream_lock );
287 /* If we are here we can control the pace... */
288 p_input->stream.b_pace_control = 1;
290 p_input->stream.b_seekable = 1;
291 p_input->stream.p_selected_area->i_size = 0;
293 p_input->stream.p_selected_area->i_tell = 0;
295 vlc_mutex_unlock( &p_input->stream.stream_lock );
297 /* XXX: put this shit in an access plugin */
298 if( strlen( p_input->p_source ) > 8
299 && !strncasecmp( p_input->p_source, "dvdread:", 8 ) )
301 p_dvdread = DVDOpen( p_input->p_source + 8 );
305 p_dvdread = DVDOpen( p_input->p_source );
310 p_input->b_error = 1;
314 /* the vlc input doesn't handle the file descriptor with libdvdread */
315 p_input->i_handle = -1;
317 /* p_dvdread is stored in p_plugin_data until we have
318 * malloc'ed a dvd_thread_data_t */
319 p_input->p_plugin_data = (void *) p_dvdread;
322 /*****************************************************************************
323 * DvdReadClose: close libdvdread
324 *****************************************************************************/
325 static void DvdReadClose( struct input_thread_s *p_input )
327 DVDClose( ((thread_dvd_data_t*)p_input->p_plugin_data)->p_dvdread );
328 free( p_input->p_plugin_data );
329 p_input->p_plugin_data = NULL;
333 /*****************************************************************************
334 * DvdReadEnd: frees unused data
335 *****************************************************************************/
336 static void DvdReadEnd( input_thread_t * p_input )
338 thread_dvd_data_t * p_dvd;
340 p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
342 /* close libdvdread */
343 DVDCloseFile( p_dvd->p_title );
344 ifoClose( p_dvd->p_vts_file );
345 ifoClose( p_dvd->p_vmg_file );
347 input_BuffersEnd( p_input->p_method_data );
350 /*****************************************************************************
351 * DvdReadSetProgram: Does nothing, a DVD is mono-program
352 *****************************************************************************/
353 static int DvdReadSetProgram( input_thread_t * p_input,
354 pgrm_descriptor_t * p_program )
359 #define p_pgc p_dvd->p_cur_pgc
361 /*****************************************************************************
362 * DvdReadSetArea: initialize input data for title x, chapter y.
363 * It should be called for each user navigation request.
364 *****************************************************************************
365 * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
366 * Note that you have to take the lock before entering here.
367 *****************************************************************************/
368 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
370 thread_dvd_data_t * p_dvd;
374 p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
376 /* we can't use the interface slider until initilization is complete */
377 p_input->stream.b_seekable = 0;
379 if( p_area != p_input->stream.p_selected_area )
381 es_descriptor_t * p_es;
387 #define p_vmg p_dvd->p_vmg_file
388 #define p_vts p_dvd->p_vts_file
389 if( p_dvd->p_title != NULL )
391 DVDCloseFile( p_dvd->p_title );
399 /* Reset the Chapter position of the old title */
400 p_input->stream.p_selected_area->i_part = 1;
403 * We have to load all title information
405 /* Change the default area */
406 p_input->stream.p_selected_area = p_area;
408 intf_WarnMsg( 12, "dvdread: open VTS %d, for title %d",
409 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
413 if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
414 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
416 intf_ErrMsg( "dvdread error: fatal error in vts ifo" );
418 DVDClose( p_dvd->p_dvdread );
419 p_input->b_error = 1;
423 /* title position inside the selected vts */
424 p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
427 * Set selected title start
429 pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
430 pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
431 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
432 i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
435 LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
437 intf_WarnMsg( 3, "dvdread: start %d vts_title %d pgc %d pgn %d",
438 p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
443 i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
445 p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
446 p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
448 intf_WarnMsg( 12, "dvdread: start %lld size %lld end %d",
449 p_area->i_start , p_area->i_size, p_dvd->i_end_block );
452 * Set properties for current chapter
454 /* Remeber current chapter */
455 p_dvd->i_chapter = p_area->i_part;
458 pgc_id = p_vts->vts_ptt_srpt->title[
459 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
460 pgn = p_vts->vts_ptt_srpt->title[
461 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
463 p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
464 p_dvd->i_pack_len = 0;
465 p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
466 DvdReadFindCell( p_dvd );
468 p_dvd->i_next_vobu = p_dvd->i_cur_block =
469 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
474 p_area->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
475 p_area->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
477 if( ( p_area->i_angle <= 0 ) || p_area->i_angle > p_area->i_angle_nb )
481 p_dvd->i_angle = p_area->i_angle;
482 p_dvd->i_angle_nb = p_area->i_angle_nb;
485 * We've got enough info, time to open the title set data.
487 if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
488 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
489 DVD_READ_TITLE_VOBS ) ) )
491 intf_ErrMsg( "dvdread error: can't open title (VTS_%02d_1.VOB)",
492 p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
495 DVDClose( p_dvd->p_dvdread );
499 // IfoPrintTitle( p_dvd );
502 * Destroy obsolete ES by reinitializing program 0
503 * and find all ES in title with ifo data
505 if( p_input->stream.pp_programs != NULL )
507 /* We don't use input_EndStream here since
508 * we keep area structures */
510 for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
512 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
515 free( p_input->stream.pp_selected_es );
516 input_DelProgram( p_input, p_input->stream.p_selected_program );
518 p_input->stream.pp_selected_es = NULL;
519 p_input->stream.i_selected_es_number = 0;
522 input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
523 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
525 /* No PSM to read in DVD mode, we already have all information */
526 p_input->stream.p_selected_program->b_is_ok = 1;
530 /* ES 0 -> video MPEG2 */
531 // IfoPrintVideo( p_dvd );
533 p_es = input_AddES( p_input, p_input->stream.p_selected_program, 0xe0, 0 );
534 p_es->i_stream_id = 0xe0;
535 p_es->i_type = MPEG2_VIDEO_ES;
536 p_es->i_cat = VIDEO_ES;
537 if( p_main->b_video )
539 input_SelectES( p_input, p_es );
542 #define audio_control \
543 p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
544 /* Audio ES, in the order they appear in .ifo */
545 for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
550 // IfoPrintAudio( p_dvd, i );
552 /* audio channel is active if first byte is 0x80 */
553 if( audio_control & 0x8000 )
556 i_position = ( audio_control & 0x7F00 ) >> 8;
558 intf_WarnMsg( 12, "dvd audio position %d", i_position );
559 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
562 i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
563 p_es = input_AddES( p_input,
564 p_input->stream.p_selected_program, i_id, 0 );
565 p_es->i_stream_id = 0xbd;
566 p_es->i_type = AC3_AUDIO_ES;
568 p_es->i_cat = AUDIO_ES;
569 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
570 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
571 strcat( p_es->psz_desc, " (ac3)" );
575 case 0x03: /* MPEG audio */
576 i_id = 0xc0 + i_position;
577 p_es = input_AddES( p_input,
578 p_input->stream.p_selected_program, i_id, 0 );
579 p_es->i_stream_id = i_id;
580 p_es->i_type = MPEG2_AUDIO_ES;
582 p_es->i_cat = AUDIO_ES;
583 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
584 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
585 strcat( p_es->psz_desc, " (mpeg)" );
588 case 0x04: /* LPCM */
590 i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
591 p_es = input_AddES( p_input,
592 p_input->stream.p_selected_program, i_id, 0 );
593 p_es->i_stream_id = i_id;
594 p_es->i_type = LPCM_AUDIO_ES;
596 p_es->i_cat = AUDIO_ES;
597 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
598 p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) ) );
599 strcat( p_es->psz_desc, " (lpcm)" );
603 i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
604 intf_ErrMsg( "dvd warning: DTS audio not handled yet"
609 intf_ErrMsg( "dvd warning: unknown audio type %.2x",
610 p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
615 #define spu_control \
616 p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
620 for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
625 // IfoPrintSpu( p_dvd, i );
626 intf_WarnMsg( 12, "dvd spu %d 0x%02x", i, spu_control );
628 if( spu_control & 0x80000000 )
632 /* there are several streams for one spu */
633 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
636 switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
639 i_position = spu_control & 0xff;
642 i_position = ( spu_control >> 8 ) & 0xff;
645 i_position = ( spu_control >> 16 ) & 0xff;
652 i_position = ( spu_control >> 24 ) & 0x7F;
655 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
656 p_es = input_AddES( p_input,
657 p_input->stream.p_selected_program, i_id, 0 );
658 p_es->i_stream_id = 0xbd;
659 p_es->i_type = DVD_SPU_ES;
660 p_es->i_cat = SPU_ES;
661 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
662 p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) ) );
666 if( p_main->b_audio )
668 /* For audio: first one if none or a not existing one specified */
669 int i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
670 if( i_audio < 0 || i_audio > i_audio_nb )
672 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
675 if( i_audio > 0 && i_audio_nb > 0 )
677 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
678 ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
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 = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
706 if( i_spu < 0 || i_spu > i_spu_nb )
708 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
711 if( i_spu > 0 && i_spu_nb > 0 )
713 i_spu += p_vts->vtsi_mat->nr_of_vts_audio_streams;
714 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
720 p_area = p_input->stream.p_selected_area;
727 if( p_area->i_part != p_dvd->i_chapter )
729 if( ( p_area->i_part > 0 ) &&
730 ( p_area->i_part <= p_area->i_part_nb ))
732 p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
733 pgc_id = p_vts->vts_ptt_srpt->title[
734 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
735 pgn = p_vts->vts_ptt_srpt->title[
736 p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
738 p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
740 p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
741 p_dvd->i_chapter = p_area->i_part;
742 DvdReadFindCell( p_dvd );
744 p_dvd->i_pack_len = 0;
745 p_dvd->i_next_vobu = p_dvd->i_cur_block =
746 p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
750 p_area->i_part = p_dvd->i_chapter;
756 if( p_area->i_angle != p_dvd->i_angle )
758 p_dvd->i_angle = p_area->i_angle;
760 intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
762 /* warn interface that something has changed */
763 p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
764 p_input->stream.b_seekable = 1;
765 p_input->stream.b_changed = 1;
771 /*****************************************************************************
772 * DvdReadRead: reads data packets into the netlist.
773 *****************************************************************************
774 * Returns -1 in case of error, 0 if everything went well, and 1 in case of
776 *****************************************************************************/
777 static int DvdReadRead( input_thread_t * p_input,
778 data_packet_t ** pp_data )
780 thread_dvd_data_t * p_dvd;
781 u8 p_data[DVD_VIDEO_LB_LEN];
782 struct iovec p_vec[DVD_DATA_BLOCK_ONCE];
790 data_packet_t * p_data_p;
793 p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
798 * Playback by cell in this pgc, starting at the cell for our chapter.
802 * End of pack, we select the following one
804 if( ! p_dvd->i_pack_len )
809 if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
812 intf_ErrMsg( "dvdread error: read failed for block %d",
813 p_dvd->i_next_vobu );
817 /* basic check to be sure we don't have a empty title
818 * go to next title if so */
819 assert( p_data[41] == 0xbf && p_data[1027] == 0xbf );
820 if( p_data[41] == 0xbf && p_data[1027] == 0xbf )
823 * Parse the contained dsi packet.
826 DvdReadHandleDSI( p_dvd, p_data );
829 if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
834 assert( p_dvd->i_pack_len < 1024 );
835 /* FIXME: Ugly kludge: we send the pack block to the input for it
836 * sometimes has a zero scr and restart the sync */
837 //p_dvd->i_cur_block ++;
843 p_dvd->i_pack_len = 0;
849 * Compute the number of blocks to read
851 i_blocks = p_dvd->i_pack_len >= DVD_BLOCK_READ_ONCE
852 ? DVD_BLOCK_READ_ONCE : p_dvd->i_pack_len;
853 p_dvd->i_pack_len -= i_blocks;
856 *pp_data = p_data_p = input_BuffersToIO( p_input->p_method_data, p_vec,
857 DVD_BLOCK_READ_ONCE );
859 if ( p_data_p == NULL )
865 i_read = DVDReadVBlocks( p_dvd->p_title, p_dvd->i_cur_block,
867 if( i_read != i_blocks )
869 intf_ErrMsg( "dvdread error: read failed for %d/%d blocks at 0x%02x",
870 i_read, i_blocks, p_dvd->i_cur_block );
874 p_dvd->i_cur_block += i_read;
876 intf_WarnMsg( 12, "dvdread i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
880 /* Read headers to compute payload length */
881 for( i_iovec = 0 ; i_iovec < i_read ; i_iovec++ )
883 data_packet_t * p_current = p_data_p;
886 while( i_pos < DVD_VIDEO_LB_LEN )
888 pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
891 if( U32_AT( pi_cur ) != 0x1BA )
893 /* That's the case for all packets, except pack header. */
894 i_packet_size = U16_AT( pi_cur + 4 );
898 /* MPEG-2 Pack header. */
903 *pp_data = input_ShareBuffer( p_input->p_method_data,
909 p_data_p = p_data_p->p_next;
912 (*pp_data)->p_payload_start = (*pp_data)->p_demux_start =
913 (*pp_data)->p_demux_start + i_pos;
916 (*pp_data)->p_payload_end =
917 (*pp_data)->p_payload_start + i_packet_size + 6;
919 // pp_packets[i_packet]->p_next = NULL;
920 // pp_packets[i_packet]->b_discard_payload = 0;
923 i_pos += i_packet_size + 6;
924 pp_data = &(*pp_data)->p_next;
928 p_input->pf_delete_packet( p_input->p_method_data, p_data_p );
931 while( p_data_p != NULL )
933 data_packet_t * p_next = p_data_p->p_next;
934 p_input->pf_delete_packet( p_input->p_method_data, p_data_p );
938 vlc_mutex_lock( &p_input->stream.stream_lock );
940 p_input->stream.p_selected_area->i_tell =
941 LB2OFF( p_dvd->i_cur_block ) -
942 p_input->stream.p_selected_area->i_start;
946 /* We modify i_part only at end of chapter not to erase
947 * some modification from the interface */
948 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
952 if( p_input->stream.p_selected_area->i_tell
953 >= p_input->stream.p_selected_area->i_size || b_eot )
955 if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
956 p_input->stream.i_area_nb )
959 vlc_mutex_unlock( &p_input->stream.stream_lock );
964 intf_WarnMsg( 4, "dvd info: new title" );
965 DvdReadSetArea( p_input, p_input->stream.pp_areas[
966 p_input->stream.p_selected_area->i_id+1] );
967 vlc_mutex_unlock( &p_input->stream.stream_lock );
971 vlc_mutex_unlock( &p_input->stream.stream_lock );
977 /*****************************************************************************
978 * DVDRewind : reads a stream backward
979 *****************************************************************************/
980 static int DvdReadRewind( input_thread_t * p_input )
985 /*****************************************************************************
986 * DvdReadSeek : Goes to a given position on the stream.
987 *****************************************************************************
988 * This one is used by the input and translate chronological position from
989 * input to logical position on the device.
990 * The lock should be taken before calling this function.
991 *****************************************************************************/
992 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
994 thread_dvd_data_t * p_dvd;
1002 i_off += p_input->stream.p_selected_area->i_start;
1003 i_lb = OFF2LB( i_off );
1004 p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1007 while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
1019 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1020 p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1021 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1022 p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1024 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1025 i_tmp = p_pgc->program_map[pgn-1];
1027 } while( i_tmp <= i_cell );
1030 while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1037 while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1038 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1044 intf_WarnMsg(12, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1045 i_cell, i_sub_cell,i_chapter, i_vobu,
1046 p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1047 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1048 p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1050 p_dvd->i_cur_block = i_lb;
1051 p_dvd->i_next_vobu =
1052 p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1053 p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1054 p_dvd->i_cur_cell = i_cell;
1055 p_dvd->i_chapter = i_chapter;
1056 DvdReadFindCell( p_dvd );
1058 p_input->stream.p_selected_area->i_tell =
1059 LB2OFF ( p_dvd->i_cur_block )
1060 - p_input->stream.p_selected_area->i_start;
1061 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1066 /*****************************************************************************
1068 *****************************************************************************/
1069 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, u8 * p_data )
1071 navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1074 * Determine where we go next. These values are the ones we mostly
1077 p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1080 * If we're not at the end of this cell, we can determine the next
1081 * VOBU to display using the VOBU_SRI information section of the
1082 * DSI. Using this value correctly follows the current angle,
1083 * avoiding the doubled scenes in The Matrix, and makes our life
1086 if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1089 switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1092 /* interleaved unit with no angle */
1093 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != -1 )
1095 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1096 p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1097 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1101 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1102 p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1103 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1107 /* vobu is end of ilvu */
1108 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1110 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1111 p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1112 p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1117 /* vobu is beginning of ilvu */
1121 /* entering interleaved section */
1123 /* non interleaved cells in interleaved section */
1125 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1126 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1127 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1131 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1132 ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1133 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1138 p_dvd->i_cur_cell = p_dvd->i_next_cell;
1139 DvdReadFindCell( p_dvd );
1141 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1142 p_dvd->i_next_vobu =
1143 p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1147 intf_WarnMsg( 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1148 p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1149 p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1150 p_dvd->dsi_pack.dsi_gi.vobu_ea,
1151 p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1152 p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1154 intf_WarnMsg( 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1155 p_dvd->dsi_pack.sml_pbi.category,
1156 p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1157 p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1158 p_dvd->dsi_pack.sml_pbi.size );
1160 intf_WarnMsg( 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1161 p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1162 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1163 p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1167 /*****************************************************************************
1169 *****************************************************************************/
1170 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1175 #define cell p_dvd->p_cur_pgc->cell_playback
1176 if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1179 p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1180 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1182 p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1184 while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1188 p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1193 p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1196 pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1197 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1198 pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1199 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1200 p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1202 if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )