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 1.100 2001/11/27 11:44:48 massiot 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 */
63 # include "dummy_dvdcss.h"
65 # include <videolan/dvdcss.h>
76 # include "input_iovec.h"
84 #include "modules_export.h"
86 #include "stream_control.h"
87 #include "input_ext-intf.h"
88 #include "input_ext-dec.h"
89 #include "input_ext-plugins.h"
91 #include "input_dvd.h"
93 #include "dvd_summary.h"
97 /* how many blocks DVDRead will read in each loop */
98 #define DVD_BLOCK_READ_ONCE 64
99 #define DVD_DATA_READ_ONCE (4 * DVD_BLOCK_READ_ONCE)
101 /* Size of netlist */
102 #define DVD_NETLIST_SIZE 256
104 /*****************************************************************************
106 *****************************************************************************/
107 /* called from outside */
108 static int DVDProbe ( probedata_t *p_data );
109 static void DVDInit ( struct input_thread_s * );
110 static void DVDEnd ( struct input_thread_s * );
111 static void DVDOpen ( struct input_thread_s * );
112 static void DVDClose ( struct input_thread_s * );
113 static int DVDSetArea ( struct input_thread_s *, struct input_area_s * );
114 static int DVDRead ( struct input_thread_s *, data_packet_t ** );
115 static void DVDSeek ( struct input_thread_s *, off_t );
116 static int DVDRewind ( struct input_thread_s * );
118 /* called only inside */
119 static int DVDChooseAngle( thread_dvd_data_t * );
120 static int DVDFindCell( thread_dvd_data_t * );
121 static int DVDFindSector( thread_dvd_data_t * );
122 static int DVDChapterSelect( thread_dvd_data_t *, int );
124 /*****************************************************************************
125 * Functions exported as capabilities. They are declared as static so that
126 * we don't pollute the namespace too much.
127 *****************************************************************************/
128 void _M( input_getfunctions )( function_list_t * p_function_list )
130 #define input p_function_list->functions.input
131 p_function_list->pf_probe = DVDProbe;
132 input.pf_init = DVDInit;
133 input.pf_open = DVDOpen;
134 input.pf_close = DVDClose;
135 input.pf_end = DVDEnd;
136 input.pf_init_bit_stream = InitBitstream;
137 input.pf_read = DVDRead;
138 input.pf_set_area = DVDSetArea;
139 input.pf_demux = input_DemuxPS;
140 input.pf_new_packet = input_NetlistNewPacket;
141 input.pf_new_pes = input_NetlistNewPES;
142 input.pf_delete_packet = input_NetlistDeletePacket;
143 input.pf_delete_pes = input_NetlistDeletePES;
144 input.pf_rewind = DVDRewind;
145 input.pf_seek = DVDSeek;
150 * Data reading functions
153 /*****************************************************************************
154 * DVDProbe: verifies that the stream is a PS stream
155 *****************************************************************************/
156 static int DVDProbe( probedata_t *p_data )
158 input_thread_t * p_input = (input_thread_t *)p_data;
160 char * psz_name = p_input->p_source;
163 if( TestMethod( INPUT_METHOD_VAR, "dvd" ) )
168 if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "dvd:", 4 ) )
170 /* If the user specified "dvd:" then it's probably a DVD */
178 /*****************************************************************************
179 * DVDInit: initializes DVD structures
180 *****************************************************************************/
181 static void DVDInit( input_thread_t * p_input )
183 thread_dvd_data_t * p_dvd;
184 input_area_t * p_area;
189 p_dvd = malloc( sizeof(thread_dvd_data_t) );
192 intf_ErrMsg( "dvd error: out of memory" );
193 p_input->b_error = 1;
197 p_input->p_plugin_data = (void *)p_dvd;
198 p_input->p_method_data = NULL;
200 p_dvd->dvdhandle = (dvdcss_handle) p_input->p_handle;
202 if( dvdcss_seek( p_dvd->dvdhandle, 0, DVDCSS_NOFLAGS ) < 0 )
204 intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
205 p_input->b_error = 1;
209 /* We read DVD_BLOCK_READ_ONCE in each loop, so the input will receive
210 * DVD_DATA_READ_ONCE at most */
211 p_dvd->i_block_once = DVD_BLOCK_READ_ONCE;
212 /* this value mustn't be modifed */
213 p_input->i_read_once = DVD_DATA_READ_ONCE;
215 /* Reading structures initialisation */
216 input_NetlistInit( p_input, DVD_NETLIST_SIZE, 2 * DVD_NETLIST_SIZE,
217 DVD_NETLIST_SIZE, DVD_LB_SIZE, p_dvd->i_block_once );
218 intf_WarnMsg( 2, "dvd info: netlist initialized" );
220 /* Ifo allocation & initialisation */
221 if( IfoCreate( p_dvd ) < 0 )
223 intf_ErrMsg( "dvd error: allcation error in ifo" );
224 dvdcss_close( p_dvd->dvdhandle );
226 p_input->b_error = 1;
230 if( IfoInit( p_dvd->p_ifo ) < 0 )
232 intf_ErrMsg( "dvd error: fatal failure in ifo" );
233 IfoDestroy( p_dvd->p_ifo );
234 dvdcss_close( p_dvd->dvdhandle );
236 p_input->b_error = 1;
240 /* Set stream and area data */
241 vlc_mutex_lock( &p_input->stream.stream_lock );
243 /* Initialize ES structures */
244 input_InitStream( p_input, sizeof( stream_ps_data_t ) );
246 #define title_inf p_dvd->p_ifo->vmg.title_inf
247 intf_WarnMsg( 2, "dvd info: number of titles: %d", title_inf.i_title_nb );
249 #define area p_input->stream.pp_areas
250 /* We start from 1 here since the default area 0
251 * is reserved for video_ts.vob */
252 for( i = 1 ; i <= title_inf.i_title_nb ; i++ )
254 input_AddArea( p_input );
256 /* Titles are Program Chains */
259 /* Absolute start offset and size
260 * We can only set that with vts ifo, so we do it during the
261 * first call to DVDSetArea */
262 area[i]->i_start = 0;
265 /* Number of chapters */
266 area[i]->i_part_nb = title_inf.p_attr[i-1].i_chapter_nb;
269 /* Number of angles */
270 area[i]->i_angle_nb = 0;
271 area[i]->i_angle = 1;
273 /* Offset to vts_i_0.ifo */
274 area[i]->i_plugin_data = p_dvd->p_ifo->i_start +
275 title_inf.p_attr[i-1].i_start_sector;
279 /* Get requested title - if none try the first title */
280 i_title = main_GetIntVariable( INPUT_TITLE_VAR, 1 );
281 if( i_title <= 0 || i_title > title_inf.i_title_nb )
288 /* Get requested chapter - if none defaults to first one */
289 i_chapter = main_GetIntVariable( INPUT_CHAPTER_VAR, 1 );
295 p_input->stream.pp_areas[i_title]->i_part = i_chapter;
297 p_area = p_input->stream.pp_areas[i_title];
299 /* set title, chapter, audio and subpic */
300 DVDSetArea( p_input, p_area );
302 vlc_mutex_unlock( &p_input->stream.stream_lock );
307 /*****************************************************************************
309 *****************************************************************************/
310 static void DVDOpen( struct input_thread_s *p_input )
312 dvdcss_handle dvdhandle;
316 vlc_mutex_lock( &p_input->stream.stream_lock );
318 /* If we are here we can control the pace... */
319 p_input->stream.b_pace_control = 1;
321 p_input->stream.b_seekable = 1;
322 p_input->stream.p_selected_area->i_size = 0;
324 p_input->stream.p_selected_area->i_tell = 0;
326 vlc_mutex_unlock( &p_input->stream.stream_lock );
328 /* Parse input string : dvd:device[:rawdevice] */
329 if( strlen( p_input->p_source ) > 4
330 && !strncasecmp( p_input->p_source, "dvd:", 4 ) )
332 psz_parser = psz_device = p_input->p_source + 4;
336 psz_parser = psz_device = p_input->p_source;
339 while( *psz_parser && *psz_parser != ':' )
344 if( *psz_parser == ':' )
346 /* Found raw device */
350 main_PutPszVariable( "DVDCSS_RAW_DEVICE", psz_parser );
353 intf_WarnMsg( 2, "input: dvd=%s raw=%s", psz_device, psz_parser );
355 dvdhandle = dvdcss_open( psz_device );
357 if( dvdhandle == NULL )
359 intf_ErrMsg( "dvd error: dvdcss can't open device" );
360 p_input->b_error = 1;
364 p_input->p_handle = (void *) dvdhandle;
367 /*****************************************************************************
368 * DVDClose: close dvd
369 *****************************************************************************/
370 static void DVDClose( struct input_thread_s *p_input )
372 /* Clean up libdvdcss */
373 dvdcss_close( (dvdcss_handle) p_input->p_handle );
376 /*****************************************************************************
377 * DVDEnd: frees unused data
378 *****************************************************************************/
379 static void DVDEnd( input_thread_t * p_input )
381 thread_dvd_data_t * p_dvd;
383 p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
385 IfoDestroy( p_dvd->p_ifo );
389 input_NetlistEnd( p_input );
392 /*****************************************************************************
393 * DVDSetArea: initialize input data for title x, chapter y.
394 * It should be called for each user navigation request.
395 *****************************************************************************
396 * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
397 * Note that you have to take the lock before entering here.
398 *****************************************************************************/
399 static int DVDSetArea( input_thread_t * p_input, input_area_t * p_area )
401 thread_dvd_data_t * p_dvd;
402 es_descriptor_t * p_es;
411 p_dvd = (thread_dvd_data_t*)p_input->p_plugin_data;
413 /* we can't use the interface slider until initilization is complete */
414 p_input->stream.b_seekable = 0;
416 if( p_area != p_input->stream.p_selected_area )
418 /* Reset the Chapter position of the old title */
419 p_input->stream.p_selected_area->i_part = 0;
422 * We have to load all title information
424 /* Change the default area */
425 p_input->stream.p_selected_area =
426 p_input->stream.pp_areas[p_area->i_id];
428 /* title number: it is not vts nb!,
429 * it is what appears in the interface list */
430 p_dvd->i_title = p_area->i_id;
431 p_dvd->p_ifo->i_title = p_dvd->i_title;
433 /* set number of chapters of current title */
434 p_dvd->i_chapter_nb = p_area->i_part_nb;
437 if( IfoTitleSet( p_dvd->p_ifo ) < 0 )
439 intf_ErrMsg( "dvd error: fatal error in vts ifo" );
441 p_input->b_error = 1;
445 #define vmg p_dvd->p_ifo->vmg
446 #define vts p_dvd->p_ifo->vts
447 /* title position inside the selected vts */
448 i_vts_title = vmg.title_inf.p_attr[p_dvd->i_title-1].i_title_num;
450 vts.title_inf.p_title_start[i_vts_title-1].i_title_id;
452 intf_WarnMsgImm( 3, "dvd: title %d vts_title %d pgc %d",
453 p_dvd->i_title, i_vts_title, p_dvd->i_title_id );
459 p_dvd->i_angle_nb = vmg.title_inf.p_attr[p_dvd->i_title-1].i_angle_nb;
460 p_dvd->i_angle = main_GetIntVariable( INPUT_ANGLE_VAR, 1 );
461 if( ( p_dvd->i_angle <= 0 ) || p_dvd->i_angle > p_dvd->i_angle_nb )
467 * Set selected title start and size
470 /* title set offset XXX: convert to block values */
471 p_dvd->i_title_start =
472 vts.i_pos + vts.manager_inf.i_title_vob_start_sector;
474 /* last video cell */
476 p_dvd->i_prg_cell = -1 +
477 vts.title_unit.p_title[p_dvd->i_title_id-1].title.i_cell_nb;
479 if( DVDFindCell( p_dvd ) < 0 )
481 intf_ErrMsg( "dvd error: can't find title end" );
482 p_input->b_error = 1;
486 /* temporary hack to fix size in some dvds */
487 if( p_dvd->i_cell >= vts.cell_inf.i_cell_nb )
489 p_dvd->i_cell = vts.cell_inf.i_cell_nb - 1;
493 p_dvd->i_size = vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector;
495 if( DVDChapterSelect( p_dvd, 1 ) < 0 )
497 intf_ErrMsg( "dvd error: can't find first chapter" );
498 p_input->b_error = 1;
502 /* Force libdvdcss to check its title key.
503 * It is only useful for title cracking method. Methods using the
504 * decrypted disc key are fast enough to check the key at each seek */
506 if( dvdcss_seek( p_dvd->dvdhandle, p_dvd->i_start,
507 DVDCSS_SEEK_KEY ) < 0 )
509 intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
513 p_dvd->i_size -= p_dvd->i_sector + 1;
515 IfoPrintTitle( p_dvd );
517 /* Area definition */
518 p_input->stream.p_selected_area->i_start = LB2OFF( p_dvd->i_start );
519 p_input->stream.p_selected_area->i_size = LB2OFF( p_dvd->i_size );
520 p_input->stream.p_selected_area->i_angle_nb = p_dvd->i_angle_nb;
521 p_input->stream.p_selected_area->i_angle = p_dvd->i_angle;
524 /* start at the beginning of the title */
525 /* FIXME: create a conf option to select whether to restart
527 p_input->stream.p_selected_area->i_tell = 0;
528 p_input->stream.p_selected_area->i_part = 1;
532 * Destroy obsolete ES by reinitializing program 0
533 * and find all ES in title with ifo data
535 if( p_input->stream.pp_programs != NULL )
537 /* We don't use input_EndStream here since
538 * we keep area structures */
540 for( i = 0 ; i < p_input->stream.i_selected_es_number ; i++ )
542 input_UnselectES( p_input, p_input->stream.pp_selected_es[i] );
545 free( p_input->stream.pp_selected_es );
546 input_DelProgram( p_input, p_input->stream.pp_programs[0] );
548 p_input->stream.pp_selected_es = NULL;
549 p_input->stream.i_selected_es_number = 0;
552 input_AddProgram( p_input, 0, sizeof( stream_ps_data_t ) );
554 /* No PSM to read in DVD mode, we already have all information */
555 p_input->stream.pp_programs[0]->b_is_ok = 1;
559 /* ES 0 -> video MPEG2 */
560 IfoPrintVideo( p_dvd );
562 p_es = input_AddES( p_input, p_input->stream.pp_programs[0], 0xe0, 0 );
563 p_es->i_stream_id = 0xe0;
564 p_es->i_type = MPEG2_VIDEO_ES;
565 p_es->i_cat = VIDEO_ES;
566 if( p_main->b_video )
568 input_SelectES( p_input, p_es );
571 #define audio_status \
572 vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_audio_status[i-1]
573 /* Audio ES, in the order they appear in .ifo */
574 for( i = 1 ; i <= vts.manager_inf.i_audio_nb ; i++ )
576 IfoPrintAudio( p_dvd, i );
578 /* audio channel is active if first byte is 0x80 */
579 if( audio_status.i_available )
583 switch( vts.manager_inf.p_audio_attr[i-1].i_coding_mode )
586 i_id = ( ( 0x80 + audio_status.i_position ) << 8 ) | 0xbd;
587 p_es = input_AddES( p_input,
588 p_input->stream.pp_programs[0], i_id, 0 );
589 p_es->i_stream_id = 0xbd;
590 p_es->i_type = AC3_AUDIO_ES;
592 p_es->i_cat = AUDIO_ES;
593 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
594 vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
595 strcat( p_es->psz_desc, " (ac3)" );
599 case 0x03: /* MPEG audio */
600 i_id = 0xc0 + audio_status.i_position;
601 p_es = input_AddES( p_input,
602 p_input->stream.pp_programs[0], i_id, 0 );
603 p_es->i_stream_id = i_id;
604 p_es->i_type = MPEG2_AUDIO_ES;
606 p_es->i_cat = AUDIO_ES;
607 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
608 vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
609 strcat( p_es->psz_desc, " (mpeg)" );
612 case 0x04: /* LPCM */
614 i_id = ( ( 0xa0 + audio_status.i_position ) << 8 ) | 0xbd;
615 p_es = input_AddES( p_input,
616 p_input->stream.pp_programs[0], i_id, 0 );
617 p_es->i_stream_id = 0xbd;
618 p_es->i_type = LPCM_AUDIO_ES;
620 p_es->i_cat = AUDIO_ES;
621 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
622 vts.manager_inf.p_audio_attr[i-1].i_lang_code ) ) );
623 strcat( p_es->psz_desc, " (lpcm)" );
627 i_id = ( ( 0x88 + audio_status.i_position ) << 8 ) | 0xbd;
628 intf_ErrMsg( "dvd warning: DTS audio not handled yet"
633 intf_ErrMsg( "dvd warning: unknown audio type %.2x",
634 vts.manager_inf.p_audio_attr[i-1].i_coding_mode );
640 vts.title_unit.p_title[p_dvd->i_title_id-1].title.pi_spu_status[i-1]
644 for( i = 1 ; i <= vts.manager_inf.i_spu_nb; i++ )
646 IfoPrintSpu( p_dvd, i );
648 if( spu_status.i_available )
652 /* there are several streams for one spu */
653 if( vts.manager_inf.video_attr.i_ratio )
656 switch( vts.manager_inf.video_attr.i_perm_displ )
659 i_id = ( ( 0x20 + spu_status.i_position_pan ) << 8 )
663 i_id = ( ( 0x20 + spu_status.i_position_letter ) << 8 )
667 i_id = ( ( 0x20 + spu_status.i_position_wide ) << 8 )
675 i_id = ( ( 0x20 + spu_status.i_position_43 ) << 8 )
678 p_es = input_AddES( p_input,
679 p_input->stream.pp_programs[0], i_id, 0 );
680 p_es->i_stream_id = 0xbd;
681 p_es->i_type = DVD_SPU_ES;
682 p_es->i_cat = SPU_ES;
683 strcpy( p_es->psz_desc, DecodeLanguage( hton16(
684 vts.manager_inf.p_spu_attr[i-1].i_lang_code ) ) );
688 if( p_main->b_audio )
690 /* For audio: first one if none or a not existing one specified */
691 i_audio = main_GetIntVariable( INPUT_CHANNEL_VAR, 1 );
692 if( i_audio < 0 || i_audio > i_audio_nb )
694 main_PutIntVariable( INPUT_CHANNEL_VAR, 1 );
697 if( i_audio > 0 && i_audio_nb > 0 )
699 if( main_GetIntVariable( AOUT_SPDIF_VAR, 0 ) ||
700 ( main_GetIntVariable( INPUT_AUDIO_VAR, 0 ) ==
704 while( ( p_input->stream.pp_es[i_ac3]->i_type !=
705 AC3_AUDIO_ES ) && ( i_ac3 <=
706 vts.manager_inf.i_audio_nb ) )
710 if( p_input->stream.pp_es[i_ac3]->i_type == AC3_AUDIO_ES )
712 input_SelectES( p_input,
713 p_input->stream.pp_es[i_ac3] );
718 input_SelectES( p_input,
719 p_input->stream.pp_es[i_audio] );
724 if( p_main->b_video )
726 /* for spu, default is none */
727 i_spu = main_GetIntVariable( INPUT_SUBTITLE_VAR, 0 );
728 if( i_spu < 0 || i_spu > i_spu_nb )
730 main_PutIntVariable( INPUT_SUBTITLE_VAR, 0 );
733 if( i_spu > 0 && i_spu_nb > 0 )
735 i_spu += vts.manager_inf.i_audio_nb;
736 input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
742 p_area = p_input->stream.p_selected_area;
751 if( p_area->i_part != p_dvd->i_chapter )
753 if( ( p_area->i_part > 0 ) &&
754 ( p_area->i_part <= p_area->i_part_nb ))
756 if( DVDChapterSelect( p_dvd, p_area->i_part ) < 0 )
758 intf_ErrMsg( "dvd error: can't set chapter in area" );
759 p_input->b_error = 1;
763 p_input->stream.p_selected_area->i_tell =
764 LB2OFF( p_dvd->i_start ) - p_area->i_start;
765 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
767 intf_WarnMsg( 4, "dvd info: chapter %d start at: %lld",
768 p_area->i_part, p_area->i_tell );
773 p_dvd->i_chapter = 1;
778 p_dvd->p_ifo->vts.title_unit.p_title[p_dvd->i_title_id-1].title
779 if( p_area->i_angle != p_dvd->i_angle )
781 if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
783 if( ( p_area->i_angle - p_dvd->i_angle ) < 0 )
787 p_dvd->i_prg_cell += ( p_area->i_angle - p_dvd->i_angle );
788 p_dvd->i_angle = p_area->i_angle;
790 DVDFindSector( p_dvd );
791 p_dvd->i_cell += p_dvd->i_angle_cell;
795 p_dvd->i_angle = p_area->i_angle;
798 intf_WarnMsg( 3, "dvd info: angle %d selected", p_area->i_angle );
801 /* warn interface that something has changed */
802 p_input->stream.b_seekable = 1;
803 p_input->stream.b_changed = 1;
809 /*****************************************************************************
810 * DVDRead: reads data packets into the netlist.
811 *****************************************************************************
812 * Returns -1 in case of error, 0 if everything went well, and 1 in case of
814 *****************************************************************************/
815 static int DVDRead( input_thread_t * p_input,
816 data_packet_t ** pp_packets )
818 thread_dvd_data_t * p_dvd;
819 netlist_t * p_netlist;
820 struct iovec * p_vec;
821 struct data_packet_s * pp_data[DVD_DATA_READ_ONCE];
834 p_dvd = (thread_dvd_data_t *)p_input->p_plugin_data;
835 p_netlist = (netlist_t *)p_input->p_method_data;
838 i_sector = p_dvd->i_title_start + p_dvd->i_sector;
839 i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
842 /* Get the position of the next cell if we're at cell end */
843 if( i_block_once <= 0 )
848 p_dvd->i_angle_cell++;
850 /* Find cell index in adress map */
851 if( DVDFindSector( p_dvd ) < 0 )
853 pp_packets[0] = NULL;
854 intf_ErrMsg( "dvd error: can't find next cell" );
858 /* Position the fd pointer on the right address */
859 if( ( i_sector = dvdcss_seek( p_dvd->dvdhandle,
860 p_dvd->i_title_start + p_dvd->i_sector,
861 DVDCSS_SEEK_MPEG ) ) < 0 )
863 intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
867 /* update chapter : it will be easier when we have navigation
869 if( p_dvd->i_chapter < ( p_dvd->i_chapter_nb - 1 ) )
871 if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
873 i_angle = p_dvd->i_angle - 1;
879 if( title.chapter_map.pi_start_cell[p_dvd->i_chapter] <=
880 ( p_dvd->i_prg_cell - i_angle + 1 ) )
887 i_block_once = p_dvd->i_end_sector - p_dvd->i_sector + 1;
890 /* The number of blocks read is the max between the requested
891 * value and the leaving block in the cell */
892 if( i_block_once > p_dvd->i_block_once )
894 i_block_once = p_dvd->i_block_once;
897 intf_WarnMsg( 2, "Sector: 0x%x Read: %d Chapter: %d", p_dvd->i_sector, i_block_once, p_dvd->i_chapter );
899 p_netlist->i_read_once = i_block_once;
901 /* Get an iovec pointer */
902 if( ( p_vec = input_NetlistGetiovec( p_netlist ) ) == NULL )
904 intf_ErrMsg( "dvd error: can't get iovec" );
909 i_read_blocks = dvdcss_readv( p_dvd->dvdhandle, p_vec,
910 i_block_once, DVDCSS_READ_DECRYPT );
912 /* Update netlist indexes: we don't do it in DVDGetiovec since we
913 * need know the real number of blocks read */
914 input_NetlistMviovec( p_netlist, i_read_blocks, pp_data );
916 /* Update global position */
917 p_dvd->i_sector += i_read_blocks;
921 /* Read headers to compute payload length */
922 for( i_iovec = 0 ; i_iovec < i_read_blocks ; i_iovec++ )
926 while( i_pos < p_netlist->i_buffer_size )
928 pi_cur = (u8*)p_vec[i_iovec].iov_base + i_pos;
931 if( U32_AT( pi_cur ) != 0x1BA )
933 /* That's the case for all packets, except pack header. */
934 i_packet_size = U16_AT( pi_cur + 4 );
935 pp_packets[i_packet] = input_NetlistNewPtr( p_netlist );
936 (*pp_data[i_iovec]->pi_refcount)++;
937 pp_packets[i_packet]->pi_refcount =
938 pp_data[i_iovec]->pi_refcount;
939 pp_packets[i_packet]->p_buffer = pp_data[i_iovec]->p_buffer;
943 /* MPEG-2 Pack header. */
945 pp_packets[i_packet] = pp_data[i_iovec];
948 pp_packets[i_packet]->p_payload_start =
949 pp_packets[i_packet]->p_buffer + i_pos;
951 pp_packets[i_packet]->p_payload_end =
952 pp_packets[i_packet]->p_payload_start + i_packet_size + 6;
955 i_pos += i_packet_size + 6;
959 pp_packets[i_packet] = NULL;
961 vlc_mutex_lock( &p_input->stream.stream_lock );
963 p_input->stream.p_selected_area->i_tell =
964 LB2OFF( i_sector + i_read_blocks ) -
965 p_input->stream.p_selected_area->i_start;
968 /* We modify i_part only at end of chapter not to erase
969 * some modification from the interface */
970 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
973 b_eot = !( p_input->stream.p_selected_area->i_tell
974 < p_input->stream.p_selected_area->i_size );
975 b_eof = b_eot && ( ( p_dvd->i_title + 1 ) >= p_input->stream.i_area_nb );
979 vlc_mutex_unlock( &p_input->stream.stream_lock );
985 intf_WarnMsg( 4, "dvd info: new title" );
987 DVDSetArea( p_input, p_input->stream.pp_areas[p_dvd->i_title] );
988 vlc_mutex_unlock( &p_input->stream.stream_lock );
992 vlc_mutex_unlock( &p_input->stream.stream_lock );
994 if( i_read_blocks == i_block_once )
1002 /*****************************************************************************
1003 * DVDRewind : reads a stream backward
1004 *****************************************************************************/
1005 static int DVDRewind( input_thread_t * p_input )
1010 /*****************************************************************************
1011 * DVDSeek : Goes to a given position on the stream.
1012 *****************************************************************************
1013 * This one is used by the input and translate chronological position from
1014 * input to logical position on the device.
1015 * The lock should be taken before calling this function.
1016 *****************************************************************************/
1017 static void DVDSeek( input_thread_t * p_input, off_t i_off )
1019 thread_dvd_data_t * p_dvd;
1026 p_dvd = ( thread_dvd_data_t * )p_input->p_plugin_data;
1028 /* we have to take care of offset of beginning of title */
1029 p_dvd->i_sector = OFF2LB(i_off + p_input->stream.p_selected_area->i_start)
1030 - p_dvd->i_title_start;
1035 /* parse vobu address map to find program cell */
1036 while( title.p_cell_play[i_prg_cell].i_end_sector < p_dvd->i_sector )
1041 p_dvd->i_prg_cell = i_prg_cell;
1043 if( DVDChooseAngle( p_dvd ) < 0 )
1045 p_input->b_error = 1;
1051 /* Find first title cell which is inside program cell */
1052 if( DVDFindCell( p_dvd ) < 0 )
1054 /* no following cell : we're at eof */
1055 intf_ErrMsg( "dvd error: cell seeking failed" );
1056 p_input->b_error = 1;
1060 i_cell = p_dvd->i_cell;
1062 #define cell p_dvd->p_ifo->vts.cell_inf.p_cell_map[i_cell]
1063 /* parse cell address map to find title cell containing sector */
1064 while( cell.i_end_sector < p_dvd->i_sector )
1069 p_dvd->i_cell = i_cell;
1071 /* if we're inside a multi-angle zone, we have to choose i_sector
1072 * in the current angle ; we can't do it all the time since cells
1073 * can be very wide out of such zones */
1074 if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1076 p_dvd->i_sector = MAX(
1077 cell.i_start_sector,
1078 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1081 p_dvd->i_end_sector = MIN(
1083 title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1085 /* update chapter */
1086 if( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1088 i_angle = p_dvd->i_angle - 1;
1094 if( p_dvd->i_chapter_nb > 1 )
1096 while( ( title.chapter_map.pi_start_cell[i_chapter] <=
1097 ( p_dvd->i_prg_cell - i_angle + 1 ) ) &&
1098 ( i_chapter < ( p_dvd->i_chapter_nb - 1 ) ) )
1108 p_dvd->i_chapter = i_chapter;
1109 p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1111 if( ( i_block = dvdcss_seek( p_dvd->dvdhandle,
1112 p_dvd->i_title_start + p_dvd->i_sector,
1113 DVDCSS_SEEK_MPEG ) ) < 0 )
1115 intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1116 p_input->b_error = 1;
1120 p_input->stream.p_selected_area->i_tell =
1121 LB2OFF ( i_block ) - p_input->stream.p_selected_area->i_start;
1123 intf_WarnMsg( 7, "Program Cell: %d Cell: %d Chapter: %d",
1124 p_dvd->i_prg_cell, p_dvd->i_cell, p_dvd->i_chapter );
1130 #define cell p_dvd->p_ifo->vts.cell_inf
1132 /*****************************************************************************
1133 * DVDFindCell: adjust the title cell index with the program cell
1134 *****************************************************************************/
1135 static int DVDFindCell( thread_dvd_data_t * p_dvd )
1140 i_cell = p_dvd->i_cell;
1141 i_index = p_dvd->i_prg_cell;
1143 if( i_cell >= cell.i_cell_nb )
1148 while( ( ( title.p_cell_pos[i_index].i_vob_id !=
1149 cell.p_cell_map[i_cell].i_vob_id ) ||
1150 ( title.p_cell_pos[i_index].i_cell_id !=
1151 cell.p_cell_map[i_cell].i_cell_id ) ) &&
1152 ( i_cell < cell.i_cell_nb - 1 ) )
1158 intf_WarnMsg( 12, "FindCell: i_cell %d i_index %d found %d nb %d",
1165 p_dvd->i_cell = i_cell;
1172 /*****************************************************************************
1173 * DVDFindSector: find cell index in adress map from index in
1174 * information table program map and give corresponding sectors.
1175 *****************************************************************************/
1176 static int DVDFindSector( thread_dvd_data_t * p_dvd )
1179 if( p_dvd->i_sector > title.p_cell_play[p_dvd->i_prg_cell].i_end_sector )
1181 p_dvd->i_prg_cell++;
1183 if( DVDChooseAngle( p_dvd ) < 0 )
1189 if( DVDFindCell( p_dvd ) < 0 )
1191 intf_ErrMsg( "dvd error: can't find sector" );
1195 /* Find start and end sectors of new cell */
1197 p_dvd->i_sector = MAX(
1198 p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1199 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector );
1200 p_dvd->i_end_sector = MIN(
1201 p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1202 title.p_cell_play[p_dvd->i_prg_cell].i_end_sector );
1204 p_dvd->i_sector = title.p_cell_play[p_dvd->i_prg_cell].i_start_sector;
1205 p_dvd->i_end_sector = title.p_cell_play[p_dvd->i_prg_cell].i_end_sector;
1209 intf_WarnMsg( 12, "cell: %d sector1: 0x%x end1: 0x%x\n"
1210 "index: %d sector2: 0x%x end2: 0x%x\n"
1211 "category: 0x%x ilvu end: 0x%x vobu start 0x%x",
1213 p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_start_sector,
1214 p_dvd->p_ifo->vts.cell_inf.p_cell_map[p_dvd->i_cell].i_end_sector,
1216 title.p_cell_play[p_dvd->i_prg_cell].i_start_sector,
1217 title.p_cell_play[p_dvd->i_prg_cell].i_end_sector,
1218 title.p_cell_play[p_dvd->i_prg_cell].i_category,
1219 title.p_cell_play[p_dvd->i_prg_cell].i_first_ilvu_vobu_esector,
1220 title.p_cell_play[p_dvd->i_prg_cell].i_last_vobu_start_sector );
1226 /*****************************************************************************
1227 * DVDChapterSelect: find the cell corresponding to requested chapter
1228 *****************************************************************************/
1229 static int DVDChapterSelect( thread_dvd_data_t * p_dvd, int i_chapter )
1232 /* Find cell index in Program chain for current chapter */
1233 p_dvd->i_prg_cell = title.chapter_map.pi_start_cell[i_chapter-1] - 1;
1235 p_dvd->i_sector = 0;
1237 DVDChooseAngle( p_dvd );
1239 /* Search for cell_index in cell adress_table and initialize
1241 if( DVDFindSector( p_dvd ) < 0 )
1243 intf_ErrMsg( "dvd error: can't select chapter" );
1247 /* start is : beginning of vts vobs + offset to vob x */
1248 p_dvd->i_start = p_dvd->i_title_start + p_dvd->i_sector;
1250 /* Position the fd pointer on the right address */
1251 if( ( p_dvd->i_start = dvdcss_seek( p_dvd->dvdhandle,
1253 DVDCSS_SEEK_MPEG ) ) < 0 )
1255 intf_ErrMsg( "dvd error: %s", dvdcss_error( p_dvd->dvdhandle ) );
1259 p_dvd->i_chapter = i_chapter;
1263 /*****************************************************************************
1264 * DVDChooseAngle: select the cell corresponding to the selected angle
1265 *****************************************************************************/
1266 static int DVDChooseAngle( thread_dvd_data_t * p_dvd )
1268 /* basic handling of angles */
1269 switch( ( ( title.p_cell_play[p_dvd->i_prg_cell].i_category & 0xf000 )
1272 /* we enter a muli-angle section */
1274 p_dvd->i_prg_cell += p_dvd->i_angle - 1;
1275 p_dvd->i_angle_cell = 0;
1277 /* we exit a multi-angle section */
1280 p_dvd->i_prg_cell += p_dvd->i_angle_nb - p_dvd->i_angle;