1 /*****************************************************************************
2 * input_dvd.c: DVD raw reading plugin.
3 *****************************************************************************
4 * This plugins should handle all the known specificities of the DVD format,
5 * especially the 2048 bytes logical block size.
7 * -input_netlist used to read packets
8 * -libdvdcss for access and unscrambling
9 * -dvd_ifo for ifo parsing and analyse
10 * -dvd_udf to find files
11 *****************************************************************************
12 * Copyright (C) 1998-2001 VideoLAN
13 * $Id: input_dvd.c,v 1.83 2001/07/30 18:56:35 gbazin Exp $
15 * Author: Stéphane Borel <stef@via.ecp.fr>
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
30 *****************************************************************************/
32 #define MODULE_NAME dvd
33 #include "modules_inner.h"
35 /*****************************************************************************
37 *****************************************************************************/
48 #include <sys/types.h>
52 #ifdef STRNCASECMP_IN_STRINGS_H
57 # include <io.h> /* read() */
59 # include <sys/uio.h> /* struct iovec */
62 #include <videolan/dvdcss.h>
71 # include "input_iovec.h"
78 #include "stream_control.h"
79 #include "input_ext-intf.h"
80 #include "input_ext-dec.h"
81 #include "input_ext-plugins.h"
83 #include "input_dvd.h"
84 #include "dvd_netlist.h"
86 #include "dvd_summary.h"
91 #include "modules_export.h"
93 /* how many blocks DVDRead will read in each loop */
94 #define DVD_BLOCK_READ_ONCE 64
95 #define DVD_DATA_READ_ONCE (4 * DVD_BLOCK_READ_ONCE)
98 #define DVD_NETLIST_SIZE 256
100 /*****************************************************************************
102 *****************************************************************************/
103 /* called from outside */
104 static int DVDProbe ( probedata_t *p_data );
105 static void DVDInit ( struct input_thread_s * );
106 static void DVDEnd ( struct input_thread_s * );
107 static void DVDOpen ( struct input_thread_s * );
108 static void DVDClose ( struct input_thread_s * );
109 static int DVDSetArea ( struct input_thread_s *, struct input_area_s * );
110 static int DVDRead ( struct input_thread_s *, data_packet_t ** );
111 static void DVDSeek ( struct input_thread_s *, off_t );
112 static int DVDRewind ( struct input_thread_s * );
114 /* called only inside */
115 static int DVDChooseAngle( thread_dvd_data_t * );
116 static int DVDFindCell( thread_dvd_data_t * );
117 static int DVDFindSector( thread_dvd_data_t * );
118 static int DVDChapterSelect( thread_dvd_data_t *, int );
120 /*****************************************************************************
121 * Functions exported as capabilities. They are declared as static so that
122 * we don't pollute the namespace too much.
123 *****************************************************************************/
124 void _M( input_getfunctions )( function_list_t * p_function_list )
126 #define input p_function_list->functions.input
127 p_function_list->pf_probe = DVDProbe;
128 input.pf_init = DVDInit;
129 input.pf_open = DVDOpen;
130 input.pf_close = DVDClose;
131 input.pf_end = DVDEnd;
132 input.pf_init_bit_stream = InitBitstream;
133 input.pf_read = DVDRead;
134 input.pf_set_area = DVDSetArea;
135 input.pf_demux = input_DemuxPS;
136 input.pf_new_packet = DVDNewPacket;
137 input.pf_new_pes = DVDNewPES;
138 input.pf_delete_packet = DVDDeletePacket;
139 input.pf_delete_pes = DVDDeletePES;
140 input.pf_rewind = DVDRewind;
141 input.pf_seek = DVDSeek;
146 * Data reading functions
149 /*****************************************************************************
150 * DVDProbe: verifies that the stream is a PS stream
151 *****************************************************************************/
152 static int DVDProbe( probedata_t *p_data )
154 input_thread_t * p_input = (input_thread_t *)p_data;
156 char * psz_name = p_input->p_source;
159 if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
164 if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
166 /* If the user specified "dvd:" then it's probably a DVD */
174 /*****************************************************************************
175 * DVDInit: initializes DVD structures
176 *****************************************************************************/
177 static void DVDInit( input_thread_t * p_input )
179 thread_dvd_data_t * p_dvd;
180 input_area_t * p_area;
185 p_dvd = malloc( sizeof(thread_dvd_data_t) );
188 intf_ErrMsg( "dvd error: out of memory" );
189 p_input->b_error = 1;
193 p_input->p_plugin_data = (void *)p_dvd;
194 p_input->p_method_data = NULL;
196 p_dvd->dvdhandle = (dvdcss_handle) p_input->i_handle;
198 dvdcss_seek( p_dvd->dvdhandle, 0 );
200 /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
201 * DVD_DATA_READ_ONCE at most */
202 p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
203 /* this value mustn't be modifed */
204 p_input->i_read_once = DVD_DATA_READ_ONCE;
206 /* Reading structures initialisation */
207 p_input->p_method_data =
208 DVDNetlistInit( DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
209 DVD_NETLIST_SIZE, DVD_LB_SIZE, p_dvd->i_block_once );
210 intf_WarnMsg( 2, "dvd info: netlist initialized" );
212 /* Ifo allocation & initialisation */
213 if( IfoCreate( p_dvd ) < 0 )
215 intf_ErrMsg( "dvd error: allcation error in ifo" );
216 dvdcss_close( p_dvd->dvdhandle );
218 p_input->b_error = 1;
222 if( IfoInit( p_dvd->p_ifo ) < 0 )
224 intf_ErrMsg( "dvd error: fatal failure in ifo" );
225 IfoDestroy( p_dvd->p_ifo );
226 dvdcss_close( p_dvd->dvdhandle );
228 p_input->b_error = 1;
232 /* Set stream and area data */
233 vlc_mutex_lock( &p_input->stream.stream_lock );
235 /* Initialize ES structures */
236 input_InitStream( p_input, sizeof( stream_ps_data_t ) );
238 /* disc input method */
239 p_input->stream.i_method = INPUT_METHOD_DVD;
241 #define title_inf p_dvd->p_ifo->vmg.title_inf
242 intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
244 #define area p_input->stream.pp_areas
245 /* We start from 1 here since the default area 0
246 * is reserved for video_ts.vob */
247 for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
249 input_AddArea( p_input );
251 /* Titles are Program Chains */
254 /* Absolute start offset and size
255 * We can only set that with vts ifo, so we do it during the
256 * first call to DVDSetArea */
257 area[i]->i_start = 0;
260 /* Number of chapters */
261 area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
264 /* Number of angles */
265 area[i]->i_angle_nb = 0;
266 area[i]->i_angle = 1;
268 /* Offset to vts_i_0.ifo */
269 area[i]->i_plugin_data = p_dvd->p_ifo->i_start +
270 title_inf.p_attr[i-1].i_start_sector;
274 /* Get requested title - if none try the first title */
275 i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
276 if( i_title <= 0 || i_title > title_inf.i_title_nb )
283 /* Get requested chapter - if none defaults to first one */
284 i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
290 p_input->stream.pp_areas[i_title]->i_part = i_chapter;
292 p_area = p_input->stream.pp_areas[i_title];
294 /* set title, chapter, audio and subpic */
295 DVDSetArea( p_input, p_area );
297 vlc_mutex_unlock( &p_input->stream.stream_lock );
302 /*****************************************************************************
304 *****************************************************************************/
305 static void DVDOpen( struct input_thread_s *p_input )
307 dvdcss_handle dvdhandle;
309 vlc_mutex_lock( &p_input->stream.stream_lock );
311 /* If we are here we can control the pace... */
312 p_input->stream.b_pace_control = 1;
314 p_input->stream.b_seekable = 1;
315 p_input->stream.p_selected_area->i_size = 0;
317 p_input->stream.p_selected_area->i_tell = 0;
319 vlc_mutex_unlock( &p_input->stream.stream_lock );
321 /* XXX: put this shit in an access plugin */
322 if( strlen( p_input->p_source ) > 4
323 && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
325 dvdhandle = dvdcss_open( p_input->p_source + 4, DVDCSS_INIT_QUIET );
329 dvdhandle = dvdcss_open( p_input->p_source, DVDCSS_INIT_QUIET );
332 if( dvdhandle == NULL )
334 p_input->b_error = 1;
338 p_input->i_handle = (int) dvdhandle;
341 /*****************************************************************************
342 * DVDClose: close dvd
343 *****************************************************************************/
344 static void DVDClose( struct input_thread_s *p_input )
346 /* Clean up libdvdcss */
347 dvdcss_close( (dvdcss_handle) p_input->i_handle );
350 /*****************************************************************************
351 * DVDEnd: frees unused data
352 *****************************************************************************/
353 static void DVDEnd( input_thread_t * p_input )
355 thread_dvd_data_t * p_dvd;
356 dvd_netlist_t * p_netlist;
358 p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
359 p_netlist = (dvd_netlist_t *)p_input->p_method_data;
361 IfoDestroy( p_dvd->p_ifo );
365 DVDNetlistEnd( p_netlist );
368 /*****************************************************************************
369 * DVDSetArea: initialize input data for title x, chapter y.
370 * It should be called for each user navigation request.
371 *****************************************************************************
372 * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
373 * Note that you have to take the lock before entering here.
374 *****************************************************************************/
375 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
377 thread_dvd_data_t * p_dvd;
378 es_descriptor_t * p_es;
385 p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
387 /* we can't use the interface slider until initilization is complete */
388 p_input->stream.b_seekable = 0;
390 if( p_area != p_input->stream.p_selected_area )
392 /* Reset the Chapter position of the old title */
393 p_input->stream.p_selected_area->i_part = 0;
396 * We have to load all title information
398 /* Change the default area */
399 p_input->stream.p_selected_area =
400 p_input->stream.pp_areas[p_area->i_id];
402 /* title number: it is not vts nb!,
403 * it is what appears in the interface list */
404 p_dvd->i_title = p_area->i_id;
405 p_dvd->p_ifo->i_title = p_dvd->i_title;
407 /* set number of chapters of current title */
408 p_dvd->i_chapter_nb = p_area->i_part_nb;
411 if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
413 intf_ErrMsg( "dvd error: fatal error in vts ifo" );
415 p_input->b_error = 1;
419 #define vmg p_dvd->p_ifo->vmg
420 #define vts p_dvd->p_ifo->vts
421 /* title position inside the selected vts */
422 i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
424 vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
426 intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
427 p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
430 * Tell libdvdcss we changed title
432 dvdcss_title( p_dvd->dvdhandle,
433 vts.i_pos + vts.manager_inf.i_title_vob_start_sector );
438 p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
439 p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
440 if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
446 * Set selected title start and size
449 /* title set offset XXX: convert to block values */
450 p_dvd->i_title_start =
451 vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
453 /* last video cell */
455 p_dvd->i_prg_cell = -1 +
456 vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
458 if( DVDFindCell( p_dvd ) < 0 )
460 intf_ErrMsg( "dvd error: can't find title end" );
461 p_input->b_error = 1;
465 /* temporary hack to fix size in some dvds */
466 if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
468 p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
472 p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
474 if( DVDChapterSelect( p_dvd, 1 ) < 0 )
476 intf_ErrMsg( "dvd error: can't find first chapter" );
477 p_input->b_error = 1;
481 p_dvd->i_size -= p_dvd->i_sector + 1;
483 IfoPrintTitle( p_dvd );
485 /* Area definition */
486 p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
487 p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
488 p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
489 p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
492 /* start at the beginning of the title */
493 /* FIXME: create a conf option to select whether to restart
495 p_input->stream.p_selected_area->i_tell = 0;
496 p_input->stream.p_selected_area->i_part = 1;
500 * Destroy obsolete ES by reinitializing program 0
501 * and find all ES in title with ifo data
503 if( p_input->stream.pp_programs != NULL )
505 /* We don't use input_EndStream here since
506 * we keep area structures */
508 for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
510 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
513 input_DelProgram( p_input, p_input->stream.pp_programs[0] );
515 p_input->stream.pp_selected_es = NULL;
516 p_input->stream.i_selected_es_number = 0;
519 input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
521 /* No PSM to read in DVD mode, we already have all information */
522 p_input->stream.pp_programs[0]->b_is_ok = 1;
526 /* ES 0 -> video MPEG2 */
527 IfoPrintVideo( p_dvd );
529 p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
530 p_es->i_stream_id = 0xe0;
531 p_es->i_type = MPEG2_VIDEO_ES;
532 p_es->i_cat = VIDEO_ES;
533 if( p_main->b_video )
535 input_SelectES( p_input, p_es );
538 #define audio_status \
539 vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
540 /* Audio ES, in the order they appear in .ifo */
541 for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
543 IfoPrintAudio( p_dvd, i );
545 /* audio channel is active if first byte is 0x80 */
546 if( audio_status.i_available )
548 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
551 i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
552 p_es = input_AddES( p_input,
553 p_input->stream.pp_programs[0], i_id, 0 );
554 p_es->i_stream_id = 0xbd;
555 p_es->i_type = AC3_AUDIO_ES;
557 p_es->i_cat = AUDIO_ES;
558 strcpy( p_es->psz_desc, IfoLanguage( hton16(
559 vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
560 strcat( p_es->psz_desc, " (ac3)" );
564 case 0x03: /* MPEG audio */
565 i_id = 0xc0 + audio_status.i_position;
566 p_es = input_AddES( p_input,
567 p_input->stream.pp_programs[0], i_id, 0 );
568 p_es->i_stream_id = i_id;
569 p_es->i_type = MPEG2_AUDIO_ES;
571 p_es->i_cat = AUDIO_ES;
572 strcpy( p_es->psz_desc, IfoLanguage( hton16(
573 vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
574 strcat( p_es->psz_desc, " (mpeg)" );
577 case 0x04: /* LPCM */
579 i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
580 p_es = input_AddES( p_input,
581 p_input->stream.pp_programs[0], i_id, 0 );
582 p_es->i_stream_id = i_id;
583 p_es->i_type = LPCM_AUDIO_ES;
585 p_es->i_cat = AUDIO_ES;
586 strcpy( p_es->psz_desc, IfoLanguage( hton16(
587 vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
588 strcat( p_es->psz_desc, " (lpcm)" );
592 i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
593 intf_ErrMsg( "dvd warning: DTS audio not handled yet"
598 intf_ErrMsg( "dvd warning: unknown audio type %.2x",
599 vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
605 vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
609 for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
611 IfoPrintSpu( p_dvd, i );
613 if( spu_status.i_available )
615 /* there are several streams for one spu */
616 if( vts.manager_inf.video_attr.i_ratio )
619 switch( vts.manager_inf.video_attr.i_perm_displ )
622 i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
626 i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
630 i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
638 i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
641 p_es = input_AddES( p_input,
642 p_input->stream.pp_programs[0], i_id, 0 );
643 p_es->i_stream_id = 0xbd;
644 p_es->i_type = DVD_SPU_ES;
645 p_es->i_cat = SPU_ES;
646 strcpy( p_es->psz_desc, IfoLanguage( hton16(
647 vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
651 if( p_main->b_audio )
653 /* For audio: first one if none or a not existing one specified */
654 i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
655 if( i_audio < 0 || i_audio > vts.manager_inf.i_audio_nb )
657 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
660 if( i_audio > 0 && vts.manager_inf.i_audio_nb > 0 )
662 input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
666 if( p_main->b_video )
668 /* for spu, default is none */
669 i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
670 if( i_spu < 0 || i_spu > vts.manager_inf.i_spu_nb )
672 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
675 if( i_spu > 0 && vts.manager_inf.i_spu_nb > 0 )
677 i_spu += vts.manager_inf.i_audio_nb;
678 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
684 p_area = p_input->stream.p_selected_area;
693 if( p_area->i_part != p_dvd->i_chapter )
695 if( ( p_area->i_part > 0 ) &&
696 ( p_area->i_part <= p_area->i_part_nb ))
698 if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
700 intf_ErrMsg( "dvd error: can't set chapter in area" );
701 p_input->b_error = 1;
705 p_input->stream.p_selected_area->i_tell =
706 LB2OFF( p_dvd->i_start ) - p_area->i_start;
707 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
709 intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
710 p_area->i_part, p_area->i_tell );
715 p_dvd->i_chapter = 1;
720 p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
721 if( p_area->i_angle != p_dvd->i_angle )
723 if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
725 if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
729 p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
730 p_dvd->i_angle = p_area->i_angle;
732 DVDFindSector( p_dvd );
733 p_dvd->i_cell += p_dvd->i_angle_cell;
737 p_dvd->i_angle = p_area->i_angle;
740 intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
743 /* warn interface that something has changed */
744 p_input->stream.b_seekable = 1;
745 p_input->stream.b_changed = 1;
751 /*****************************************************************************
752 * DVDRead: reads data packets into the netlist.
753 *****************************************************************************
754 * Returns -1 in case of error, 0 if everything went well, and 1 in case of
756 *****************************************************************************/
757 static int DVDRead( input_thread_t * p_input,
758 data_packet_t ** pp_packets )
760 thread_dvd_data_t * p_dvd;
761 dvd_netlist_t * p_netlist;
762 struct iovec * p_vec;
763 struct data_packet_s * pp_data[DVD_DATA_READ_ONCE];
776 p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
777 p_netlist = (dvd_netlist_t *)p_input->p_method_data;
780 i_sector = p_dvd->i_title_start + p_dvd->i_sector;
781 i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
783 /* Get the position of the next cell if we're at cell end */
784 if( i_block_once <= 0 )
789 p_dvd->i_angle_cell++;
791 /* Find cell index in adress map */
792 if( DVDFindSector( p_dvd ) < 0 )
794 pp_packets[0] = NULL;
795 intf_ErrMsg( "dvd error: can't find next cell" );
799 /* Position the fd pointer on the right address */
800 i_sector = dvdcss_seek( p_dvd->dvdhandle,
801 p_dvd->i_title_start + p_dvd->i_sector );
803 /* update chapter : it will be easier when we have navigation
805 if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
807 if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
809 i_angle = p_dvd->i_angle - 1;
815 if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
816 ( p_dvd->i_prg_cell - i_angle + 1 ) )
823 i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
826 /* The number of blocks read is the max between the requested
827 * value and the leaving block in the cell */
828 if( i_block_once > p_dvd->i_block_once )
830 i_block_once = p_dvd->i_block_once;
833 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
835 p_netlist->i_read_once = i_block_once;
837 /* Get an iovec pointer */
838 if( ( p_vec = DVDGetiovec( p_netlist ) ) == NULL )
840 intf_ErrMsg( "dvd error: can't get iovec" );
845 i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
846 i_block_once, DVDCSS_READ_DECRYPT );
848 /* Update netlist indexes: we don't do it in DVDGetiovec since we
849 * need know the real number of blocks read */
850 DVDMviovec( p_netlist, i_read_blocks, pp_data );
852 /* Update global position */
853 p_dvd->i_sector += i_read_blocks;
857 /* Read headers to compute payload length */
858 for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
862 while( i_pos < p_netlist->i_buffer_size )
864 pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
867 if( U32_AT( pi_cur ) != 0x1BA )
869 /* That's the case for all packets, except pack header. */
870 i_packet_size = U16_AT( pi_cur + 4 );
871 pp_packets[i_packet] = DVDNewPtr( p_netlist );
875 /* MPEG-2 Pack header. */
877 pp_packets[i_packet] = pp_data[i_iovec];
881 (*pp_data[i_iovec]->pi_refcount)++;
883 pp_packets[i_packet]->pi_refcount = pp_data[i_iovec]->pi_refcount;
885 pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
887 pp_packets[i_packet]->p_payload_start =
888 pp_packets[i_packet]->p_buffer + i_pos;
890 pp_packets[i_packet]->p_payload_end =
891 pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
893 pp_packets[i_packet]->p_next = NULL;
894 pp_packets[i_packet]->b_discard_payload = 0;
897 i_pos += i_packet_size + 6;
901 pp_packets[i_packet] = NULL;
903 vlc_mutex_lock( &p_input->stream.stream_lock );
905 p_input->stream.p_selected_area->i_tell =
906 LB2OFF( i_sector + i_read_blocks ) -
907 p_input->stream.p_selected_area->i_start;
910 /* We modify i_part only at end of chapter not to erase
911 * some modification from the interface */
912 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
915 b_eot = !( p_input->stream.p_selected_area->i_tell
916 < p_input->stream.p_selected_area->i_size );
917 b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
921 vlc_mutex_unlock( &p_input->stream.stream_lock );
927 intf_WarnMsg( 4, "dvd info: new title" );
929 DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
930 vlc_mutex_unlock( &p_input->stream.stream_lock );
934 vlc_mutex_unlock( &p_input->stream.stream_lock );
936 if( i_read_blocks == i_block_once )
944 /*****************************************************************************
945 * DVDRewind : reads a stream backward
946 *****************************************************************************/
947 static int DVDRewind( input_thread_t * p_input )
952 /*****************************************************************************
953 * DVDSeek : Goes to a given position on the stream.
954 *****************************************************************************
955 * This one is used by the input and translate chronological position from
956 * input to logical position on the device.
957 * The lock should be taken before calling this function.
958 *****************************************************************************/
959 static void DVDSeek( input_thread_t * p_input, off_t i_off )
961 thread_dvd_data_t * p_dvd;
967 p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
969 /* we have to take care of offset of beginning of title */
970 p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
971 - p_dvd->i_title_start;
976 /* parse vobu address map to find program cell */
977 while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector )
982 p_dvd->i_prg_cell = i_prg_cell;
984 if( DVDChooseAngle( p_dvd ) < 0 )
986 p_input->b_error = 1;
992 /* Find first title cell which is inside program cell */
993 if( DVDFindCell( p_dvd ) < 0 )
995 /* no following cell : we're at eof */
996 intf_ErrMsg( "dvd error: cell seeking failed" );
997 p_input->b_error = 1;
1001 i_cell = p_dvd->i_cell;
1003 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1004 /* parse cell address map to find title cell containing sector */
1005 while( cell.i_end_sector < p_dvd->i_sector )
1010 p_dvd->i_cell = i_cell;
1012 /* if we're inside a multi-angle zone, we have to choose i_sector
1013 * in the current angle ; we can't do it all the time since cells
1014 * can be very wide out of such zones */
1015 if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1017 p_dvd->i_sector = MAX(
1018 cell.i_start_sector,
1019 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1022 p_dvd->i_end_sector = MIN(
1024 title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1026 /* update chapter */
1027 if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1029 i_angle = p_dvd->i_angle - 1;
1035 if( p_dvd->i_chapter_nb > 1 )
1037 while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1038 ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1039 ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1049 p_dvd->i_chapter = i_chapter;
1050 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1052 p_input->stream.p_selected_area->i_tell =
1053 LB2OFF ( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_title_start
1054 + p_dvd->i_sector ) )
1055 - p_input->stream.p_selected_area->i_start;
1057 intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1058 p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1064 #define cell p_dvd->p_ifo->vts.cell_inf
1066 /*****************************************************************************
1067 * DVDFindCell: adjust the title cell index with the program cell
1068 *****************************************************************************/
1069 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1074 i_cell = p_dvd->i_cell;
1075 i_index = p_dvd->i_prg_cell;
1077 if( i_cell >= cell.i_cell_nb )
1082 while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1083 cell.p_cell_map[i_cell].i_vob_id ) ||
1084 ( title.p_cell_pos[i_index].i_cell_id !=
1085 cell.p_cell_map[i_cell].i_cell_id ) ) &&
1086 ( i_cell < cell.i_cell_nb - 1 ) )
1092 intf_WarnMsg( 7, "FindCell: i_cell %d i_index %d found %d nb %d",
1099 p_dvd->i_cell = i_cell;
1106 /*****************************************************************************
1107 * DVDFindSector: find cell index in adress map from index in
1108 * information table program map and give corresponding sectors.
1109 *****************************************************************************/
1110 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1113 if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1115 p_dvd->i_prg_cell++;
1117 if( DVDChooseAngle( p_dvd ) < 0 )
1123 if( DVDFindCell( p_dvd ) < 0 )
1125 intf_ErrMsg( "dvd error: can't find sector" );
1129 /* Find start and end sectors of new cell */
1131 p_dvd->i_sector = MAX(
1132 p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1133 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1134 p_dvd->i_end_sector = MIN(
1135 p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1136 title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1138 p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1139 p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1143 intf_WarnMsg( 7, "cell: %d sector1: 0x%x end1: 0x%x\n"
1144 "index: %d sector2: 0x%x end2: 0x%x\n"
1145 "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1147 p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1148 p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1150 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1151 title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1152 title.p_cell_play[p_dvd->i_prg_cell].i_category,
1153 title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1154 title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1160 /*****************************************************************************
1161 * DVDChapterSelect: find the cell corresponding to requested chapter
1162 *****************************************************************************/
1163 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1166 /* Find cell index in Program chain for current chapter */
1167 p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1169 p_dvd->i_sector = 0;
1171 DVDChooseAngle( p_dvd );
1173 /* Search for cell_index in cell adress_table and initialize
1175 if( DVDFindSector( p_dvd ) < 0 )
1177 intf_ErrMsg( "dvd error: can't select chapter" );
1181 /* start is : beginning of vts vobs + offset to vob x */
1182 p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1184 /* Position the fd pointer on the right address */
1185 p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start );
1187 p_dvd->i_chapter = i_chapter;
1191 /*****************************************************************************
1192 * DVDChooseAngle: select the cell corresponding to the selected angle
1193 *****************************************************************************/
1194 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1196 /* basic handling of angles */
1197 switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1200 /* we enter a muli-angle section */
1202 p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1203 p_dvd->i_angle_cell = 0;
1205 /* we exit a multi-angle section */
1208 p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;