* modules/access/dvd*: changed some errors in warnings because the directory
[vlc.git] / modules / access / dvdread / input.c
1 /*****************************************************************************
2  * input.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, 2003 VideoLAN
9  * $Id: input.c,v 1.18 2003/03/24 14:18:28 hartman Exp $
10  *
11  * Author: St├ęphane Borel <stef@via.ecp.fr>
12  *
13  * Some code taken form the play_title.c by Billy Biggs <vektor@dumbterm.net>
14  * in libdvdread.
15  *
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.
20  *
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.
25  *
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  *****************************************************************************/
30
31 /*****************************************************************************
32  * Preamble
33  *****************************************************************************/
34 #include <stdio.h>
35 #include <stdlib.h>
36
37 #include <vlc/vlc.h>
38 #include <vlc/input.h>
39
40 #include "../../demux/mpeg/system.h"
41
42 #ifdef HAVE_UNISTD_H
43 #   include <unistd.h>
44 #endif
45
46 #include <fcntl.h>
47 #include <sys/types.h>
48 #include <sys/stat.h>
49 #include <string.h>
50 #include <errno.h>
51 #include <assert.h>
52
53 #ifdef STRNCASECMP_IN_STRINGS_H
54 #   include <strings.h>
55 #endif
56
57 #if defined( WIN32 )
58 #   include <io.h>                                                 /* read() */
59 #endif
60
61 #include <dvdread/dvd_reader.h>
62 #include <dvdread/ifo_types.h>
63 #include <dvdread/ifo_read.h>
64 #include <dvdread/nav_read.h>
65 #include <dvdread/nav_print.h>
66
67 #include "input.h"
68
69 #include "iso_lang.h"
70
71 /* how many blocks DVDRead will read in each loop */
72 #define DVD_BLOCK_READ_ONCE 64
73
74 /*****************************************************************************
75  * Private structure
76  *****************************************************************************/
77 struct demux_sys_t
78 {
79     module_t *   p_module;
80     mpeg_demux_t mpeg;
81 };
82
83 /*****************************************************************************
84  * Local prototypes
85  *****************************************************************************/
86 /* called from outside */
87 static int  DvdReadDemux    ( input_thread_t * );
88 static int  DvdReadRewind   ( input_thread_t * );
89
90 static int  DvdReadSetArea    ( input_thread_t *, input_area_t * );
91 static int  DvdReadSetProgram ( input_thread_t *, pgrm_descriptor_t * );
92 static int  DvdReadRead       ( input_thread_t *, byte_t *, size_t );
93 static void DvdReadSeek       ( input_thread_t *, off_t );
94
95 /* called only from here */
96 static void DvdReadLauchDecoders( input_thread_t * p_input );
97 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, uint8_t * p_data );
98 static void DvdReadFindCell ( thread_dvd_data_t * p_dvd );
99
100 /*
101  * Data demux functions
102  */
103
104 /*****************************************************************************
105  * InitDVD: initialize DVD structures
106  *****************************************************************************/
107 int E_(InitDVD) ( vlc_object_t *p_this )
108 {
109     input_thread_t *p_input = (input_thread_t *)p_this;
110     demux_sys_t *   p_demux;
111
112     if( p_input->stream.i_method != INPUT_METHOD_DVD )
113     {
114         return VLC_EGENERIC;
115     }
116
117     p_demux = p_input->p_demux_data = malloc( sizeof(demux_sys_t ) );
118     if( p_demux == NULL )
119     {
120         return VLC_ENOMEM;
121     }
122
123     p_input->p_private = (void*)&p_demux->mpeg;
124     p_demux->p_module = module_Need( p_input, "mpeg-system", NULL );
125     if( p_demux->p_module == NULL )
126     {
127         free( p_input->p_demux_data );
128         return VLC_ENOMOD;
129     }
130
131     p_input->pf_demux = DvdReadDemux;
132     p_input->pf_rewind = NULL;
133
134     vlc_mutex_lock( &p_input->stream.stream_lock );
135
136     DvdReadLauchDecoders( p_input );
137
138     vlc_mutex_unlock( &p_input->stream.stream_lock );
139
140     return VLC_SUCCESS;
141 }
142
143 /*****************************************************************************
144  * EndDVD: end DVD structures
145  *****************************************************************************/
146 void E_(EndDVD) ( vlc_object_t *p_this )
147 {
148     input_thread_t *p_input = (input_thread_t *)p_this;
149
150     module_Unneed( p_input, p_input->p_demux_data->p_module );
151     free( p_input->p_demux_data );
152 }
153
154 /*****************************************************************************
155  * DvdReadDemux
156  *****************************************************************************/
157 #define PEEK( SIZE )                                                        \
158     i_result = input_Peek( p_input, &p_peek, SIZE );                        \
159     if( i_result == -1 )                                                    \
160     {                                                                       \
161         return -1;                                                          \
162     }                                                                       \
163     else if( i_result < SIZE )                                              \
164     {                                                                       \
165         /* EOF */                                                           \
166         return 0;                                                           \
167     }
168
169 static int DvdReadDemux( input_thread_t * p_input )
170 {
171     int                 i;
172     byte_t *            p_peek;
173     data_packet_t *     p_data;
174     ssize_t             i_result;
175     int                 i_packet_size;
176
177
178     /* Read headers to compute payload length */
179     for( i = 0 ; i < DVD_BLOCK_READ_ONCE ; i++ )
180     {
181
182         /* Read what we believe to be a packet header. */
183         PEEK( 4 );
184
185         /* Default header */
186         if( U32_AT( p_peek ) != 0x1BA )
187         {
188             /* That's the case for all packets, except pack header. */
189             i_packet_size = U16_AT( p_peek + 4 );
190         }
191         else
192         {
193             /* MPEG-2 Pack header. */
194             i_packet_size = 8;
195         }
196
197         /* Fetch a packet of the appropriate size. */
198         i_result = input_SplitBuffer( p_input, &p_data, i_packet_size + 6 );
199         if( i_result <= 0 )
200         {
201             return( i_result );
202         }
203
204         /* In MPEG-2 pack headers we still have to read stuffing bytes. */
205         if( (p_data->p_demux_start[3] == 0xBA) && (i_packet_size == 8) )
206         {
207             ssize_t i_stuffing = (p_data->p_demux_start[13] & 0x7);
208             /* Force refill of the input buffer - though we don't care
209              * about p_peek. Please note that this is unoptimized. */
210             PEEK( i_stuffing );
211             p_input->p_current_data += i_stuffing;
212         }
213
214         p_input->p_demux_data->mpeg.pf_demux_ps( p_input, p_data );
215
216     }
217
218     return i;
219 }
220
221 /*****************************************************************************
222  * DVDRewind : reads a stream backward
223  *****************************************************************************/
224 static int DvdReadRewind( input_thread_t * p_input )
225 {
226     return -1;
227 }
228
229 /*
230  * Data access functions
231  */
232
233 /*****************************************************************************
234  * OpenDVD: open libdvdread
235  *****************************************************************************/
236 int E_(OpenDVD) ( vlc_object_t *p_this )
237 {
238     input_thread_t *        p_input = (input_thread_t *)p_this;
239     char *                  psz_parser;
240     char *                  psz_source;
241     char *                  psz_next;
242     struct stat             stat_info;
243     thread_dvd_data_t *     p_dvd;
244     dvd_reader_t *          p_dvdread;
245     input_area_t *          p_area;
246     unsigned int            i_title = 1;
247     unsigned int            i_chapter = 1;
248     unsigned int            i_angle = 1;
249     unsigned int            i;
250
251     psz_source = strdup( p_input->psz_name );
252     if( psz_source == NULL )
253     {
254         return VLC_ENOMEM;
255     }
256
257     p_input->pf_read = DvdReadRead;
258     p_input->pf_seek = DvdReadSeek;
259     p_input->pf_set_area = DvdReadSetArea;
260     p_input->pf_set_program = DvdReadSetProgram;
261
262     /* Start with the end, because you could have :
263      * dvdread:/Volumes/my@toto/VIDEO_TS@1,1
264      * (yes, this is kludgy). */
265     for ( psz_parser = psz_source + strlen(psz_source) - 1;
266           psz_parser >= psz_source && *psz_parser != '@';
267           psz_parser-- );
268
269     if( psz_parser >= psz_source && *psz_parser == '@' )
270     {
271         /* Found options */
272         *psz_parser = '\0';
273         ++psz_parser;
274
275         i_title = (int)strtol( psz_parser, &psz_next, 10 );
276         if( *psz_next )
277         {
278             psz_parser = psz_next + 1;
279             i_chapter = (int)strtol( psz_parser, &psz_next, 10 );
280             if( *psz_next )
281             {
282                 i_angle = (int)strtol( psz_next + 1, NULL, 10 );
283             }
284         }
285
286         i_title = i_title ? i_title : 1;
287         i_chapter = i_chapter ? i_chapter : 1;
288         i_angle = i_angle ? i_angle : 1;
289     }
290
291     if( !*psz_source )
292     {
293         free( psz_source );
294         if( !p_input->psz_access )
295         {
296             return VLC_EGENERIC;
297         }
298         psz_source = config_GetPsz( p_input, "dvd" );
299         if( !psz_source ) return VLC_EGENERIC;
300     }
301
302     if( stat( psz_source, &stat_info ) == -1 )
303     {
304         msg_Warn( p_input, "cannot stat() source `%s' (%s)",
305                            psz_source, strerror(errno) );
306         free( psz_source );
307         return VLC_EGENERIC;
308     }
309     if( !S_ISBLK(stat_info.st_mode) &&
310         !S_ISCHR(stat_info.st_mode) &&
311         !S_ISDIR(stat_info.st_mode) )
312     {
313         msg_Warn( p_input, "dvdread module discarded (not a valid source)" );
314         free( psz_source );
315         return VLC_EGENERIC;
316     }
317
318     msg_Dbg( p_input, "dvdroot=%s title=%d chapter=%d angle=%d",
319                       psz_source, i_title, i_chapter, i_angle );
320
321
322     p_dvdread = DVDOpen( psz_source );
323
324     /* free allocated strings */
325     free( psz_source );
326
327     if( ! p_dvdread )
328     {
329         msg_Err( p_input, "libdvdcss cannot open source" );
330         return VLC_EGENERIC;
331     }
332
333     /* set up input  */
334     p_input->i_mtu = 0;
335
336     p_dvd = malloc( sizeof(thread_dvd_data_t) );
337     if( p_dvd == NULL )
338     {
339         msg_Err( p_input, "out of memory" );
340         return VLC_ENOMEM;
341     }
342
343     p_dvd->p_dvdread = p_dvdread;
344     p_dvd->p_title = NULL;
345     p_dvd->p_vts_file = NULL;
346
347
348     p_input->p_access_data = (void *)p_dvd;
349
350     /* Ifo allocation & initialisation */
351     if( ! ( p_dvd->p_vmg_file = ifoOpen( p_dvd->p_dvdread, 0 ) ) )
352     {
353         msg_Warn( p_input, "cannot open VMG info" );
354         free( p_dvd );
355         return VLC_EGENERIC;
356     }
357     msg_Dbg( p_input, "VMG opened" );
358
359     /* Set stream and area data */
360     vlc_mutex_lock( &p_input->stream.stream_lock );
361
362     p_input->stream.i_method = INPUT_METHOD_DVD;
363
364     /* If we are here we can control the pace... */
365     p_input->stream.b_pace_control = VLC_TRUE;
366     p_input->stream.b_seekable = VLC_TRUE;
367     p_input->stream.b_connected = VLC_TRUE;
368
369     p_input->stream.p_selected_area->i_size = 0;
370     p_input->stream.p_selected_area->i_tell = 0;
371
372     /* Initialize ES structures */
373     input_InitStream( p_input, sizeof( stream_ps_data_t ) );
374
375     /* disc input method */
376     p_input->stream.i_method = INPUT_METHOD_DVD;
377
378 #define tt_srpt p_dvd->p_vmg_file->tt_srpt
379     msg_Dbg( p_input, "number of titles: %d", tt_srpt->nr_of_srpts );
380
381 #define area p_input->stream.pp_areas
382     /* We start from 1 here since the default area 0
383      * is reserved for video_ts.vob */
384     for( i = 1 ; i <= tt_srpt->nr_of_srpts ; i++ )
385     {
386         /* Titles are Program Chains */
387         input_AddArea( p_input, i, tt_srpt->title[i-1].nr_of_ptts );
388
389         /* Absolute start offset and size
390          * We can only set that with vts ifo, so we do it during the
391          * first call to DVDSetArea */
392         area[i]->i_start = 0;
393         area[i]->i_size = 0;
394
395         /* Default Chapter */
396         area[i]->i_part = 1;
397
398         area[i]->i_plugin_data = tt_srpt->title[i-1].title_set_nr;
399     }
400 #undef area
401
402     p_dvd->i_title = i_title <= tt_srpt->nr_of_srpts ? i_title : 1;
403 #undef tt_srpt
404
405     p_area = p_input->stream.pp_areas[p_dvd->i_title];
406     p_dvd->i_chapter = i_chapter;
407
408     p_dvd->i_chapter = i_chapter < p_area->i_part_nb ? i_chapter : 1;
409     p_area->i_part = p_dvd->i_chapter;
410
411     p_dvd->i_angle = i_angle;
412
413     /* set title, chapter, audio and subpic */
414     if( DvdReadSetArea( p_input, p_area ) )
415     {
416         vlc_mutex_unlock( &p_input->stream.stream_lock );
417         return VLC_EGENERIC;
418     }
419
420     vlc_mutex_unlock( &p_input->stream.stream_lock );
421
422     if( !p_input->psz_demux || !*p_input->psz_demux )
423     {
424         p_input->psz_demux = "dvdread";
425     }
426
427     return VLC_SUCCESS;
428 }
429
430 /*****************************************************************************
431  * CloseDVD: close libdvdread
432  *****************************************************************************/
433 void E_(CloseDVD) ( vlc_object_t *p_this )
434 {
435     input_thread_t *    p_input = (input_thread_t *)p_this;
436     thread_dvd_data_t * p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
437
438     /* This is a very nasty side-effect in the DVD plug-in : language
439      * selection here influences language selection of other streams. So
440      * unset those variables (may not be what the user wants).
441      * FIXME FIXME FIXME FIXME FIXME FIXME FIXME --Meuuh */
442     config_PutInt( p_input, "audio-channel", -1 );
443     config_PutInt( p_input, "spu-channel", -1 );
444
445     /* close libdvdread */
446     DVDCloseFile( p_dvd->p_title );
447     ifoClose( p_dvd->p_vts_file );
448     ifoClose( p_dvd->p_vmg_file );
449
450     DVDClose( p_dvd->p_dvdread );
451     free( p_dvd );
452     p_input->p_access_data = NULL;
453
454 }
455
456 /*****************************************************************************
457  * DvdReadSetProgram: Does nothing, a DVD is mono-program
458  *****************************************************************************/
459 static int DvdReadSetProgram( input_thread_t * p_input,
460                               pgrm_descriptor_t * p_program )
461 {
462     if( p_input->stream.p_selected_program != p_program )
463     {
464         thread_dvd_data_t *  p_dvd;
465         vlc_value_t val;
466
467         p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
468         p_dvd->i_angle = p_program->i_number;
469
470         memcpy( p_program, p_input->stream.p_selected_program,
471                 sizeof(pgrm_descriptor_t) );
472         p_program->i_number = p_dvd->i_angle;
473         p_input->stream.p_selected_program = p_program;
474
475         msg_Dbg( p_input, "angle %d selected", p_dvd->i_angle );
476
477         /* Update the navigation variables without triggering a callback */
478         val.i_int = p_program->i_number;
479         var_Change( p_input, "program", VLC_VAR_SETVALUE, &val );
480     }
481
482     return VLC_SUCCESS;
483 }
484
485 #define p_pgc         p_dvd->p_cur_pgc
486
487 /*****************************************************************************
488  * DvdReadSetArea: initialize input data for title x, chapter y.
489  * It should be called for each user navigation request.
490  *****************************************************************************
491  * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
492  * Note that you have to take the lock before entering here.
493  *****************************************************************************/
494 static int DvdReadSetArea( input_thread_t * p_input, input_area_t * p_area )
495 {
496     thread_dvd_data_t *  p_dvd;
497     int                  pgc_id = 0;
498     int                  pgn = 0;
499     vlc_value_t          val;
500
501     p_dvd = (thread_dvd_data_t*)p_input->p_access_data;
502
503     /* we can't use the interface slider until initilization is complete */
504     p_input->stream.b_seekable = VLC_FALSE;
505
506     if( p_area != p_input->stream.p_selected_area )
507     {
508         es_descriptor_t *    p_es;
509         unsigned int         i_cell = 0;
510         unsigned int         i_audio_nb = 0;
511         unsigned int         i_spu_nb = 0;
512         unsigned int         i;
513
514 #define p_vmg         p_dvd->p_vmg_file
515 #define p_vts         p_dvd->p_vts_file
516         if( p_dvd->p_title != NULL )
517         {
518             DVDCloseFile( p_dvd->p_title );
519         }
520
521         if( p_vts != NULL )
522         {
523             ifoClose( p_vts );
524         }
525
526         /* Reset the Chapter position of the old title */
527         p_input->stream.p_selected_area->i_part = 1;
528
529         /*
530          *  We have to load all title information
531          */
532         /* Change the default area */
533         p_input->stream.p_selected_area = p_area;
534
535         msg_Dbg( p_input, "open VTS %d, for title %d",
536             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
537             p_area->i_id );
538
539         /* ifo vts */
540         if( ! ( p_vts = ifoOpen( p_dvd->p_dvdread,
541                 p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr ) ) )
542         {
543             msg_Err( p_input, "fatal error in vts ifo" );
544             ifoClose( p_vmg );
545             DVDClose( p_dvd->p_dvdread );
546             return VLC_EGENERIC;
547         }
548
549         /* title position inside the selected vts */
550         p_dvd->i_ttn = p_vmg->tt_srpt->title[ p_area->i_id - 1 ].vts_ttn;
551
552         /*
553          * Set selected title start
554          */
555         pgc_id = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgcn;
556         pgn = p_vts->vts_ptt_srpt->title[p_dvd->i_ttn-1].ptt[0].pgn;
557         p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
558         i_cell = p_pgc->program_map[ pgn - 1 ] - 1;
559
560         p_area->i_start =
561             LB2OFF( p_dvd->p_cur_pgc->cell_playback[ i_cell ].first_sector );
562
563         msg_Dbg( p_input, "start %d vts_title %d pgc %d pgn %d",
564                   p_area->i_id, p_dvd->i_ttn, pgc_id, pgn );
565
566         /*
567          * Find title end
568          */
569         i_cell = p_dvd->p_cur_pgc->nr_of_cells - 1;
570
571         p_dvd->i_end_block = p_pgc->cell_playback[ i_cell ].last_sector;
572         p_area->i_size = LB2OFF( p_dvd->i_end_block )- p_area->i_start;
573
574         msg_Dbg( p_input, "start "I64Fd" size "I64Fd" end %d",
575                   p_area->i_start , p_area->i_size, p_dvd->i_end_block );
576
577         /*
578          * Set properties for current chapter
579          */
580         /* Remeber current chapter */
581         p_dvd->i_chapter = p_area->i_part;
582         p_dvd->b_eoc = VLC_FALSE;
583
584         pgc_id = p_vts->vts_ptt_srpt->title[
585                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
586         pgn = p_vts->vts_ptt_srpt->title[
587                     p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
588
589         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;
590         p_dvd->i_pack_len = 0;
591         p_dvd->i_next_cell = p_dvd->i_cur_cell = p_pgc->program_map[pgn-1] - 1;
592         DvdReadFindCell( p_dvd );
593
594         p_dvd->i_next_vobu = p_dvd->i_cur_block =
595             p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
596
597         /*
598          * Angle management
599          */
600         p_dvd->i_angle_nb = p_vmg->tt_srpt->title[p_area->i_id-1].nr_of_angles;
601
602         if( p_dvd->i_angle > p_dvd->i_angle_nb )
603         {
604             p_dvd->i_angle = 1;
605         }
606
607         /*
608          * We've got enough info, time to open the title set data.
609          */
610         if( ! ( p_dvd->p_title = DVDOpenFile( p_dvd->p_dvdread,
611             p_vmg->tt_srpt->title[ p_area->i_id - 1 ].title_set_nr,
612             DVD_READ_TITLE_VOBS ) ) )
613         {
614             msg_Err( p_input, "cannot open title (VTS_%02d_1.VOB)",
615                      p_vmg->tt_srpt->title[p_area->i_id-1].title_set_nr );
616             ifoClose( p_vts );
617             ifoClose( p_vmg );
618             DVDClose( p_dvd->p_dvdread );
619             return VLC_EGENERIC;
620         }
621
622 //        IfoPrintTitle( p_dvd );
623
624         /*
625          * Destroy obsolete ES by reinitializing program 0
626          * and find all ES in title with ifo data
627          */
628         if( p_input->stream.pp_programs != NULL )
629         {
630             /* We don't use input_EndStream here since
631              * we keep area structures */
632
633             while( p_input->stream.i_es_number )
634             {
635                 input_DelES( p_input, p_input->stream.pp_es[0] );
636             }
637
638             while( p_input->stream.i_pgrm_number )
639             {
640                 input_DelProgram( p_input, p_input->stream.pp_programs[0] );
641             }
642
643             if( p_input->stream.pp_selected_es )
644             {
645                 free( p_input->stream.pp_selected_es );
646                 p_input->stream.pp_selected_es = NULL;
647             }
648             p_input->stream.i_selected_es_number = 0;
649         }
650
651         input_AddProgram( p_input, 1, sizeof( stream_ps_data_t ) );
652         p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
653
654         for( i = 1 ; i < p_dvd->i_angle_nb ; i++ )
655         {
656             input_AddProgram( p_input, i+1, 0 );
657         }
658
659         DvdReadSetProgram( p_input,
660                            p_input->stream.pp_programs[p_dvd->i_angle-1] );
661
662         /* No PSM to read in DVD mode, we already have all information */
663         p_input->stream.p_selected_program->b_is_ok = VLC_TRUE;
664
665         p_es = NULL;
666
667         /* ES 0 -> video MPEG2 */
668 //        IfoPrintVideo( p_dvd );
669
670         p_es = input_AddES( p_input, NULL, 0xe0, 0 );
671         p_es->i_stream_id = 0xe0;
672         p_es->i_fourcc = VLC_FOURCC('m','p','g','v');
673         p_es->i_cat = VIDEO_ES;
674
675 #define audio_control \
676     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
677         /* Audio ES, in the order they appear in .ifo */
678         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams ; i++ )
679         {
680             int i_position = 0;
681             uint16_t i_id;
682
683 //            IfoPrintAudio( p_dvd, i );
684
685             /* audio channel is active if first byte is 0x80 */
686             if( audio_control & 0x8000 )
687             {
688                 i_audio_nb++;
689                 i_position = ( audio_control & 0x7F00 ) >> 8;
690
691             msg_Dbg( p_input, "audio position  %d", i_position );
692                 switch( p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format )
693                 {
694                 case 0x00:              /* A52 */
695                     i_id = ( ( 0x80 + i_position ) << 8 ) | 0xbd;
696                     p_es = input_AddES( p_input, NULL, i_id, 0 );
697                     p_es->i_stream_id = 0xbd;
698                     p_es->i_fourcc = VLC_FOURCC('a','5','2','b');
699                     p_es->i_cat = AUDIO_ES;
700                     strcpy( p_es->psz_desc, DecodeLanguage(
701                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) );
702                     strcat( p_es->psz_desc, " (A52)" );
703
704                     break;
705                 case 0x02:
706                 case 0x03:              /* MPEG audio */
707                     i_id = 0xc0 + i_position;
708                     p_es = input_AddES( p_input, NULL, i_id, 0 );
709                     p_es->i_stream_id = i_id;
710                     p_es->i_fourcc = VLC_FOURCC('m','p','g','a');
711                     p_es->i_cat = AUDIO_ES;
712                     strcpy( p_es->psz_desc, DecodeLanguage(
713                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) );
714                     strcat( p_es->psz_desc, " (mpeg)" );
715
716                     break;
717                 case 0x04:              /* LPCM */
718
719                     i_id = ( ( 0xa0 + i_position ) << 8 ) | 0xbd;
720                     p_es = input_AddES( p_input, NULL, i_id, 0 );
721                     p_es->i_stream_id = i_id;
722                     p_es->i_fourcc = VLC_FOURCC('l','p','c','b');
723                     p_es->i_cat = AUDIO_ES;
724                     strcpy( p_es->psz_desc, DecodeLanguage(
725                         p_vts->vtsi_mat->vts_audio_attr[i-1].lang_code ) );
726                     strcat( p_es->psz_desc, " (lpcm)" );
727
728                     break;
729                 case 0x06:              /* DTS */
730                     i_id = ( ( 0x88 + i_position ) << 8 ) | 0xbd;
731                     msg_Err( p_input, "DTS audio not handled yet"
732                                       "(0x%x)", i_id );
733                     break;
734                 default:
735                     i_id = 0;
736                     msg_Err( p_input, "unknown audio type %.2x",
737                           p_vts->vtsi_mat->vts_audio_attr[i-1].audio_format );
738                 }
739             }
740         }
741 #undef audio_control
742 #define spu_control \
743     p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
744
745         /* Sub Picture ES */
746
747         for( i = 1 ; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
748         {
749             int i_position = 0;
750             uint16_t i_id;
751
752 //            IfoPrintSpu( p_dvd, i );
753             msg_Dbg( p_input, "spu %d 0x%02x", i, spu_control );
754
755             if( spu_control & 0x80000000 )
756             {
757                 i_spu_nb++;
758
759                 /*  there are several streams for one spu */
760                 if(  p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
761                 {
762                     /* 16:9 */
763                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
764                     {
765                     case 1:
766                         i_position = spu_control & 0xff;
767                         break;
768                     case 2:
769                         i_position = ( spu_control >> 8 ) & 0xff;
770                         break;
771                     default:
772                         i_position = ( spu_control >> 16 ) & 0xff;
773                         break;
774                     }
775                 }
776                 else
777                 {
778                     /* 4:3 */
779                     i_position = ( spu_control >> 24 ) & 0x7F;
780                 }
781
782                 i_id = ( ( 0x20 + i_position ) << 8 ) | 0xbd;
783                 p_es = input_AddES( p_input, NULL, i_id, 0 );
784                 p_es->i_stream_id = 0xbd;
785                 p_es->i_fourcc = VLC_FOURCC('s','p','u','b');
786                 p_es->i_cat = SPU_ES;
787                 strcpy( p_es->psz_desc, DecodeLanguage(
788                     p_vts->vtsi_mat->vts_subp_attr[i-1].lang_code ) );
789             }
790         }
791 #undef spu_control
792
793         /* FIXME: hack to check that the demuxer is ready, and set
794          * the decoders */
795         if( p_input->p_demux )
796         {
797             DvdReadLauchDecoders( p_input );
798         }
799
800         /* Update the navigation variables without triggering a callback */
801         val.i_int = p_area->i_id;
802         var_Change( p_input, "title", VLC_VAR_SETVALUE, &val );
803         var_Change( p_input, "chapter", VLC_VAR_CLEARCHOICES, NULL );
804         for( i = 1; i <= p_area->i_part_nb; i++ )
805         {
806             val.i_int = i;
807             var_Change( p_input, "chapter", VLC_VAR_ADDCHOICE, &val );
808         }
809
810     } /* i_title >= 0 */
811     else
812     {
813         p_area = p_input->stream.p_selected_area;
814     }
815
816     /*
817      * Chapter selection
818      */
819
820     if( p_area->i_part != p_dvd->i_chapter )
821     {
822         if( ( p_area->i_part > 0 ) &&
823             ( p_area->i_part <= p_area->i_part_nb ))
824         {
825             p_dvd->i_ttn = p_vmg->tt_srpt->title[p_area->i_id-1].vts_ttn;
826             pgc_id = p_vts->vts_ptt_srpt->title[
827                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgcn;
828             pgn = p_vts->vts_ptt_srpt->title[
829                         p_dvd->i_ttn-1].ptt[p_area->i_part-1].pgn;
830
831             p_pgc = p_vts->vts_pgcit->pgci_srp[ pgc_id - 1 ].pgc;
832
833             p_dvd->i_cur_cell = p_pgc->program_map[ pgn - 1 ] - 1;
834             p_dvd->i_chapter = p_area->i_part;
835             DvdReadFindCell( p_dvd );
836
837             p_dvd->i_pack_len = 0;
838             p_dvd->i_next_vobu = p_dvd->i_cur_block =
839                     p_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
840         }
841         else
842         {
843             p_area->i_part = p_dvd->i_chapter;
844         }
845     }
846 #undef p_vts
847 #undef p_vmg
848
849     /* warn interface that something has changed */
850     p_area->i_tell = LB2OFF( p_dvd->i_next_vobu ) - p_area->i_start;
851     p_input->stream.b_seekable = VLC_TRUE;
852     p_input->stream.b_changed = VLC_TRUE;
853
854     /* Update the navigation variables without triggering a callback */
855     val.i_int = p_area->i_part;
856     var_Change( p_input, "chapter", VLC_VAR_SETVALUE, &val );
857
858     return VLC_SUCCESS;
859 }
860
861
862 /*****************************************************************************
863  * DvdReadRead: reads data packets.
864  *****************************************************************************
865  * Returns -1 in case of error, 0 in case of EOF, otherwise the number of
866  * bytes.
867  *****************************************************************************/
868 static int DvdReadRead( input_thread_t * p_input,
869                         byte_t * p_buffer, size_t i_count )
870 {
871     thread_dvd_data_t *     p_dvd;
872     byte_t *                p_buf;
873     unsigned int            i_blocks_once;
874     unsigned int            i_blocks;
875     int                     i_read;
876     int                     i_read_total;
877     vlc_bool_t              b_eot = VLC_FALSE;
878
879     p_dvd = (thread_dvd_data_t *)p_input->p_access_data;
880     p_buf = p_buffer;
881
882     /*
883      * Playback by cell in this pgc, starting at the cell for our chapter.
884      */
885     i_blocks = OFF2LB( i_count );
886     i_read_total = 0;
887     i_read = 0;
888
889     while( i_blocks )
890     {
891         /*
892          * End of pack, we select the following one
893          */
894         if( ! p_dvd->i_pack_len )
895         {
896             /*
897              * Read NAV packet.
898              */
899             if( ( i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_next_vobu,
900                            1, p_buf ) ) != 1 )
901             {
902                 msg_Err( p_input, "read failed for block %d",
903                                   p_dvd->i_next_vobu );
904                 return -1;
905             }
906
907             /* basic check to be sure we don't have a empty title
908              * go to next title if so */
909             //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
910
911             /*
912              * Parse the contained dsi packet.
913              */
914
915             DvdReadHandleDSI( p_dvd, p_buf );
916
917             /* End of title */
918             if( p_dvd->i_next_vobu >= p_dvd->i_end_block + 1 )
919             {
920                 b_eot = 1;
921                 break;
922             }
923
924             assert( p_dvd->i_pack_len < 1024 );
925             /* FIXME: Ugly kludge: we send the pack block to the input for it
926              * sometimes has a zero scr and restart the sync */
927             p_dvd->i_cur_block ++;
928             //p_dvd->i_pack_len++;
929
930             i_read_total++;
931             p_buf += DVD_VIDEO_LB_LEN;
932             i_blocks--;
933         }
934
935         /*
936          * Compute the number of blocks to read
937          */
938         i_blocks_once = __MIN( p_dvd->i_pack_len, i_blocks );
939         p_dvd->i_pack_len -= i_blocks_once;
940
941         /* Reads from DVD */
942         i_read = DVDReadBlocks( p_dvd->p_title, p_dvd->i_cur_block,
943                                 i_blocks_once, p_buf );
944         if( (unsigned int)i_read != i_blocks_once )
945         {
946             msg_Err( p_input, "read failed for %d/%d blocks at 0x%02x",
947                               i_read, i_blocks_once, p_dvd->i_cur_block );
948             return -1;
949         }
950
951         i_blocks -= i_read;
952         i_read_total += i_read;
953         p_dvd->i_cur_block += i_read;
954         p_buf += LB2OFF( i_read );
955
956     }
957 /*
958     msg_Dbg( p_input, "i_blocks: %d len: %d current: 0x%02x", i_read, p_dvd->i_pack_len, p_dvd->i_cur_block );
959 */
960
961     vlc_mutex_lock( &p_input->stream.stream_lock );
962
963     if( p_dvd->b_eoc )
964     {
965         /* We modify i_part only at end of chapter not to erase
966          * some modification from the interface */
967         p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
968         p_dvd->b_eoc = VLC_FALSE;
969     }
970
971     if( ( LB2OFF( p_dvd->i_cur_block )
972           - p_input->stream.p_selected_area->i_start )
973             >= p_input->stream.p_selected_area->i_size || b_eot )
974     {
975         if( ( p_input->stream.p_selected_area->i_id + 1 ) >=
976                         p_input->stream.i_area_nb )
977         {
978             /* EOF */
979             vlc_mutex_unlock( &p_input->stream.stream_lock );
980             return 0;
981         }
982
983         /* EOT */
984         msg_Dbg( p_input, "new title" );
985         DvdReadSetArea( p_input, p_input->stream.pp_areas[
986                         p_input->stream.p_selected_area->i_id+1] );
987     }
988
989     vlc_mutex_unlock( &p_input->stream.stream_lock );
990
991     return LB2OFF( i_read_total );
992 }
993 #undef p_pgc
994
995 /*****************************************************************************
996  * DvdReadSeek : Goes to a given position on the stream.
997  *****************************************************************************
998  * This one is used by the input and translate chronological position from
999  * input to logical position on the device.
1000  * The lock should be taken before calling this function.
1001  *****************************************************************************/
1002 static void DvdReadSeek( input_thread_t * p_input, off_t i_off )
1003 {
1004     thread_dvd_data_t *     p_dvd;
1005     unsigned int            i_lb;
1006     unsigned int            i_tmp;
1007     unsigned int            i_chapter = 0;
1008     unsigned int            i_cell = 0;
1009     unsigned int            i_vobu = 0;
1010     unsigned int            i_sub_cell = 0;
1011
1012     vlc_mutex_lock( &p_input->stream.stream_lock );
1013     i_off += p_input->stream.p_selected_area->i_start;
1014     vlc_mutex_unlock( &p_input->stream.stream_lock );
1015
1016     i_lb = OFF2LB( i_off );
1017     p_dvd = ( thread_dvd_data_t * )p_input->p_access_data;
1018
1019     /* find cell */
1020     while( p_dvd->p_cur_pgc->cell_playback[i_cell].last_sector < i_lb )
1021     {
1022         i_cell++;
1023     }
1024
1025     /* find chapter */
1026     do
1027     {
1028         pgc_t *     p_pgc;
1029         int         pgc_id, pgn;
1030
1031         i_chapter++;
1032         pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1033                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgcn;
1034         pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1035                     p_dvd->i_ttn-1].ptt[i_chapter-1].pgn;
1036
1037         p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1038         i_tmp = p_pgc->program_map[pgn-1];
1039
1040     } while( i_tmp <= i_cell );
1041
1042     /* find vobu */
1043     while( p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu]
1044             <= i_lb )
1045     {
1046         i_vobu++;
1047     }
1048
1049     /* find sub_cell */
1050     while( p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1051             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1052     {
1053         i_sub_cell++;
1054     }
1055
1056 /*
1057     msg_Dbg( p_input, "cell %d i_sub_cell %d chapter %d vobu %d cell_sector %d vobu_sector %d sub_cell_sector %d",
1058             i_cell, i_sub_cell,i_chapter, i_vobu,
1059             p_dvd->p_cur_pgc->cell_playback[i_cell].first_sector,
1060             p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu],
1061             p_dvd->p_vts_file->vts_c_adt->cell_adr_table[i_sub_cell-1].start_sector);
1062 */
1063     p_dvd->i_cur_block = i_lb;
1064     p_dvd->i_next_vobu =
1065         p_dvd->p_vts_file->vts_vobu_admap->vobu_start_sectors[i_vobu];
1066     p_dvd->i_pack_len = p_dvd->i_next_vobu - i_lb;
1067     p_dvd->i_cur_cell = i_cell;
1068     p_dvd->i_chapter = i_chapter;
1069     DvdReadFindCell( p_dvd );
1070
1071     vlc_mutex_lock( &p_input->stream.stream_lock );
1072     p_input->stream.p_selected_area->i_tell =
1073         LB2OFF ( p_dvd->i_cur_block )
1074          - p_input->stream.p_selected_area->i_start;
1075     p_input->stream.p_selected_area->i_part = p_dvd->i_chapter;
1076     vlc_mutex_unlock( &p_input->stream.stream_lock );
1077
1078     return;
1079 }
1080
1081 /*****************************************************************************
1082  * DvdReadHandleDSI
1083  *****************************************************************************/
1084 static void DvdReadHandleDSI( thread_dvd_data_t * p_dvd, uint8_t * p_data )
1085 {
1086     navRead_DSI( &(p_dvd->dsi_pack), &(p_data[ DSI_START_BYTE ]) );
1087
1088     /*
1089      * Determine where we go next.  These values are the ones we mostly
1090      * care about.
1091      */
1092     p_dvd->i_cur_block = p_dvd->dsi_pack.dsi_gi.nv_pck_lbn;
1093
1094     /*
1095      * If we're not at the end of this cell, we can determine the next
1096      * VOBU to display using the VOBU_SRI information section of the
1097      * DSI.  Using this value correctly follows the current angle,
1098      * avoiding the doubled scenes in The Matrix, and makes our life
1099      * really happy.
1100      */
1101     if( p_dvd->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL )
1102     {
1103 #if 1
1104         switch( ( p_dvd->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1105         {
1106             case 0x4:
1107                 /* interleaved unit with no angle */
1108                 if( p_dvd->dsi_pack.sml_pbi.ilvu_sa != 0 )
1109                 {
1110                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1111                         p_dvd->dsi_pack.sml_pbi.ilvu_sa;
1112                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1113                 }
1114                 else
1115                 {
1116                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1117                         p_dvd->dsi_pack.dsi_gi.vobu_ea + 1;
1118                     p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1119                 }
1120                 break;
1121             case 0x5:
1122                 /* vobu is end of ilvu */
1123                 if( p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address )
1124                 {
1125                     p_dvd->i_next_vobu = p_dvd->i_cur_block +
1126                         p_dvd->dsi_pack.sml_agli.data[p_dvd->i_angle-1].address;
1127                     p_dvd->i_pack_len = p_dvd->dsi_pack.sml_pbi.ilvu_ea;
1128
1129                     break;
1130                 }
1131             case 0x6:
1132                 /* vobu is beginning of ilvu */
1133             case 0x9:
1134                 /* next scr is 0 */
1135             case 0xa:
1136                 /* entering interleaved section */
1137             case 0x8:
1138                 /* non interleaved cells in interleaved section */
1139             default:
1140                 p_dvd->i_next_vobu = p_dvd->i_cur_block +
1141                     ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1142                 p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1143                 break;
1144         }
1145 #else
1146         p_dvd->i_next_vobu = p_dvd->i_cur_block +
1147             ( p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1148         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1149 #endif
1150     }
1151     else
1152     {
1153         p_dvd->i_cur_cell = p_dvd->i_next_cell;
1154         DvdReadFindCell( p_dvd );
1155
1156         p_dvd->i_pack_len = p_dvd->dsi_pack.dsi_gi.vobu_ea;
1157         p_dvd->i_next_vobu =
1158             p_dvd->p_cur_pgc->cell_playback[p_dvd->i_cur_cell].first_sector;
1159     }
1160
1161 #if 0
1162     msg_Dbg( p_input, 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1163              p_dvd->dsi_pack.dsi_gi.nv_pck_scr,
1164              p_dvd->dsi_pack.dsi_gi.nv_pck_lbn,
1165              p_dvd->dsi_pack.dsi_gi.vobu_ea,
1166              p_dvd->dsi_pack.dsi_gi.vobu_vob_idn,
1167              p_dvd->dsi_pack.dsi_gi.vobu_c_idn );
1168
1169     msg_Dbg( p_input, 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1170              p_dvd->dsi_pack.sml_pbi.category,
1171              p_dvd->dsi_pack.sml_pbi.ilvu_ea,
1172              p_dvd->dsi_pack.sml_pbi.ilvu_sa,
1173              p_dvd->dsi_pack.sml_pbi.size );
1174
1175     msg_Dbg( p_input, 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1176              p_dvd->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1177              p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle - 1 ].address,
1178              p_dvd->dsi_pack.sml_agli.data[ p_dvd->i_angle ].address);
1179 #endif
1180 }
1181
1182 /*****************************************************************************
1183  * DvdReadFindCell
1184  *****************************************************************************/
1185 static void DvdReadFindCell( thread_dvd_data_t * p_dvd )
1186 {
1187     int         pgc_id, pgn;
1188     int         i = 0;
1189     pgc_t *     p_pgc;
1190 #define cell p_dvd->p_cur_pgc->cell_playback
1191     if( cell[p_dvd->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1192     {
1193 #if 0
1194         p_dvd->i_next_cell = p_dvd->i_cur_cell + p_dvd->i_angle_nb;
1195         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1196 #else
1197         p_dvd->i_cur_cell += p_dvd->i_angle - 1;
1198
1199         while( cell[p_dvd->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1200         {
1201             i++;
1202         }
1203         p_dvd->i_next_cell = p_dvd->i_cur_cell + i + 1;
1204 #endif
1205     }
1206     else
1207     {
1208         p_dvd->i_next_cell = p_dvd->i_cur_cell + 1;
1209     }
1210 #undef cell
1211     pgc_id = p_dvd->p_vts_file->vts_ptt_srpt->title[
1212                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgcn;
1213     pgn = p_dvd->p_vts_file->vts_ptt_srpt->title[
1214                 p_dvd->i_ttn-1].ptt[p_dvd->i_chapter-1].pgn;
1215     p_pgc = p_dvd->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc;
1216
1217     if( p_pgc->program_map[pgn-1] <= p_dvd->i_cur_cell )
1218     {
1219         p_dvd->i_chapter++;
1220         p_dvd->b_eoc = VLC_TRUE;
1221     }
1222 }
1223
1224 /*****************************************************************************
1225  * DvdReadLaunchDecoders
1226  *****************************************************************************/
1227 static void DvdReadLauchDecoders( input_thread_t * p_input )
1228 {
1229     thread_dvd_data_t * p_dvd = (thread_dvd_data_t*)(p_input->p_access_data);
1230     int i_audio, i_spu;
1231
1232     input_SelectES( p_input, p_input->stream.pp_es[0] );
1233
1234     /* For audio: first one if none or a not existing one specified */
1235     i_audio = config_GetInt( p_input, "audio-channel" );
1236     if( i_audio < 0 /*|| i_audio > i_audio_nb*/ )
1237     {
1238         config_PutInt( p_input, "audio-channel", 1 );
1239         i_audio = 1;
1240     }
1241     if( i_audio > 0/* && i_audio_nb > 0*/ )
1242     {
1243         if( config_GetInt( p_input, "audio-type" ) == REQUESTED_A52 )
1244         {
1245             int     i_a52 = i_audio;
1246             while( ( p_input->stream.pp_es[i_a52]->i_fourcc !=
1247                    VLC_FOURCC('a','5','2','b') ) && ( i_a52 <=
1248                    p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams ) )
1249             {
1250                 i_a52++;
1251             }
1252             if( p_input->stream.pp_es[i_a52]->i_fourcc
1253                  == VLC_FOURCC('a','5','2','b') )
1254             {
1255                 input_SelectES( p_input, p_input->stream.pp_es[i_a52] );
1256             }
1257         }
1258         else
1259         {
1260             input_SelectES( p_input, p_input->stream.pp_es[i_audio] );
1261         }
1262     }
1263
1264     /* for spu, default is none */
1265     i_spu = config_GetInt( p_input, "spu-channel" );
1266     if( i_spu < 0 /*|| i_spu > i_spu_nb*/ )
1267     {
1268         config_PutInt( p_input, "spu-channel", 0 );
1269         i_spu = 0;
1270     }
1271     if( i_spu > 0 /*&& i_spu_nb > 0*/ )
1272     {
1273         i_spu += p_dvd->p_vts_file->vtsi_mat->nr_of_vts_audio_streams;
1274         input_SelectES( p_input, p_input->stream.pp_es[i_spu] );
1275     }
1276 }