79d83041d5b870dfed4c2506340147f7ca5bdfc9
[vlc.git] / modules / access / dvdread.c
1 /*****************************************************************************
2  * dvdread.c : DvdRead input module for vlc
3  *****************************************************************************
4  * Copyright (C) 2001-2006 VLC authors and VideoLAN
5  * $Id$
6  *
7  * Authors: St├ęphane Borel <stef@via.ecp.fr>
8  *          Gildas Bazin <gbazin@videolan.org>
9  *
10  * This program is free software; you can redistribute it and/or modify it
11  * under the terms of the GNU Lesser General Public License as published by
12  * the Free Software Foundation; either version 2.1 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public License
21  * along with this program; if not, write to the Free Software Foundation,
22  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23  *****************************************************************************/
24
25 /*****************************************************************************
26  * NOTA BENE: this module requires the linking against a library which is
27  * known to require licensing under the GNU General Public License version 2
28  * (or later). Therefore, the result of compiling this module will normally
29  * be subject to the terms of that later license.
30  *****************************************************************************/
31
32
33 /*****************************************************************************
34  * Preamble
35  *****************************************************************************/
36
37 #ifdef HAVE_CONFIG_H
38 # include "config.h"
39 #endif
40
41 #include <vlc_common.h>
42 #include <vlc_plugin.h>
43 #include <vlc_input.h>
44 #include <vlc_access.h>
45 #include <vlc_charset.h>
46 #include <vlc_interface.h>
47 #include <vlc_dialog.h>
48
49 #include <vlc_iso_lang.h>
50
51 #include "../demux/ps.h"
52
53 #ifdef HAVE_UNISTD_H
54 #   include <unistd.h>
55 #endif
56
57 #include <sys/types.h>
58
59 #include <dvdread/dvd_reader.h>
60 #include <dvdread/ifo_types.h>
61 #include <dvdread/ifo_read.h>
62 #include <dvdread/nav_read.h>
63 #include <dvdread/nav_print.h>
64
65 #include <assert.h>
66
67 /*****************************************************************************
68  * Module descriptor
69  *****************************************************************************/
70 #define ANGLE_TEXT N_("DVD angle")
71 #define ANGLE_LONGTEXT N_( \
72     "Default DVD angle." )
73
74 static int  Open ( vlc_object_t * );
75 static void Close( vlc_object_t * );
76
77 vlc_module_begin ()
78     set_shortname( N_("DVD without menus") )
79     set_description( N_("DVDRead Input (no menu support)") )
80     set_category( CAT_INPUT )
81     set_subcategory( SUBCAT_INPUT_ACCESS )
82     add_integer( "dvdread-angle", 1, ANGLE_TEXT,
83         ANGLE_LONGTEXT, false )
84     add_obsolete_string( "dvdread-css-method" ) /* obsolete since 1.1.0 */
85     set_capability( "access_demux", 0 )
86     add_shortcut( "dvd", "dvdread", "dvdsimple" )
87     set_callbacks( Open, Close )
88 vlc_module_end ()
89
90 /* how many blocks DVDRead will read in each loop */
91 #define DVD_BLOCK_READ_ONCE 4
92
93 /*****************************************************************************
94  * Local prototypes
95  *****************************************************************************/
96
97 struct demux_sys_t
98 {
99     /* DVDRead state */
100     dvd_reader_t *p_dvdread;
101     dvd_file_t   *p_title;
102
103     ifo_handle_t *p_vmg_file;
104     ifo_handle_t *p_vts_file;
105
106     int i_title;
107     int i_chapter, i_chapters;
108     int i_angle, i_angles;
109
110     tt_srpt_t    *p_tt_srpt;
111     pgc_t        *p_cur_pgc;
112     dsi_t        dsi_pack;
113     int          i_ttn;
114
115     int i_pack_len;
116     int i_cur_block;
117     int i_next_vobu;
118
119     int i_mux_rate;
120
121     /* Current title start/end blocks */
122     int i_title_start_block;
123     int i_title_end_block;
124     int i_title_blocks;
125     int i_title_offset;
126     mtime_t i_title_cur_time;
127
128     int i_title_start_cell;
129     int i_title_end_cell;
130     int i_cur_cell;
131     int i_next_cell;
132     mtime_t i_cell_cur_time;
133     mtime_t i_cell_duration;
134
135     /* Track */
136     ps_track_t    tk[PS_TK_COUNT];
137
138     int           i_titles;
139     input_title_t **titles;
140
141     /* Video */
142     int i_sar_num;
143     int i_sar_den;
144
145     /* SPU */
146     uint32_t clut[16];
147 };
148
149 static int Control   ( demux_t *, int, va_list );
150 static int Demux     ( demux_t * );
151 static int DemuxBlock( demux_t *, const uint8_t *, int );
152
153 static void DemuxTitles( demux_t *, int * );
154 static void ESNew( demux_t *, int, int );
155
156 static int  DvdReadSetArea  ( demux_t *, int, int, int );
157 static void DvdReadSeek     ( demux_t *, int );
158 static void DvdReadHandleDSI( demux_t *, uint8_t * );
159 static void DvdReadFindCell ( demux_t * );
160
161 /*****************************************************************************
162  * Open:
163  *****************************************************************************/
164 static int Open( vlc_object_t *p_this )
165 {
166     demux_t      *p_demux = (demux_t*)p_this;
167     demux_sys_t  *p_sys;
168     char         *psz_file;
169     ifo_handle_t *p_vmg_file;
170
171     if( !p_demux->psz_file || !*p_demux->psz_file )
172     {
173         /* Only when selected */
174         if( !p_demux->psz_access || !*p_demux->psz_access )
175             return VLC_EGENERIC;
176
177         psz_file = var_InheritString( p_this, "dvd" );
178     }
179     else
180         psz_file = strdup( p_demux->psz_file );
181
182 #if defined( WIN32 ) || defined( __OS2__ )
183     if( psz_file != NULL )
184     {
185         size_t flen = strlen( psz_file );
186         if( flen > 0 && psz_file[flen - 1] == '\\' )
187             psz_file[flen - 1] = '\0';
188     }
189     else
190         psz_file = strdup("");
191 #endif
192     if( unlikely(psz_file == NULL) )
193         return VLC_EGENERIC;
194
195     /* Open dvdread */
196     const char *psz_path = ToLocale( psz_file );
197     dvd_reader_t *p_dvdread = DVDOpen( psz_path );
198
199     LocaleFree( psz_path );
200     if( p_dvdread == NULL )
201     {
202         msg_Err( p_demux, "DVDRead cannot open source: %s", psz_file );
203         dialog_Fatal( p_demux, _("Playback failure"),
204                       _("DVDRead could not open the disc \"%s\"."), psz_file );
205         free( psz_file );
206         return VLC_EGENERIC;
207     }
208     free( psz_file );
209
210     /* Ifo allocation & initialisation */
211     if( !( p_vmg_file = ifoOpen( p_dvdread, 0 ) ) )
212     {
213         msg_Warn( p_demux, "cannot open VMG info" );
214         return VLC_EGENERIC;
215     }
216     msg_Dbg( p_demux, "VMG opened" );
217
218     /* Fill p_demux field */
219     DEMUX_INIT_COMMON(); p_sys = p_demux->p_sys;
220
221     ps_track_init( p_sys->tk );
222     p_sys->i_sar_num = 0;
223     p_sys->i_sar_den = 0;
224     p_sys->i_title_cur_time = (mtime_t) 0;
225     p_sys->i_cell_cur_time = (mtime_t) 0;
226     p_sys->i_cell_duration = (mtime_t) 0;
227
228     p_sys->p_dvdread = p_dvdread;
229     p_sys->p_vmg_file = p_vmg_file;
230     p_sys->p_title = NULL;
231     p_sys->p_vts_file = NULL;
232
233     p_sys->i_title = p_sys->i_chapter = -1;
234     p_sys->i_mux_rate = 0;
235
236     p_sys->i_angle = var_CreateGetInteger( p_demux, "dvdread-angle" );
237     if( p_sys->i_angle <= 0 ) p_sys->i_angle = 1;
238
239     DemuxTitles( p_demux, &p_sys->i_angle );
240     if( DvdReadSetArea( p_demux, 0, 0, p_sys->i_angle ) != VLC_SUCCESS )
241     {
242         msg_Err( p_demux, "DvdReadSetArea(0,0,%i) failed (can't decrypt DVD?)",
243                  p_sys->i_angle );
244         Close( p_this );
245         return VLC_EGENERIC;
246     }
247
248     return VLC_SUCCESS;
249 }
250
251 /*****************************************************************************
252  * Close:
253  *****************************************************************************/
254 static void Close( vlc_object_t *p_this )
255 {
256     demux_t     *p_demux = (demux_t*)p_this;
257     demux_sys_t *p_sys = p_demux->p_sys;
258     int i;
259
260     for( i = 0; i < PS_TK_COUNT; i++ )
261     {
262         ps_track_t *tk = &p_sys->tk[i];
263         if( tk->b_seen )
264         {
265             es_format_Clean( &tk->fmt );
266             if( tk->es ) es_out_Del( p_demux->out, tk->es );
267         }
268     }
269
270     /* Free the array of titles */
271     for( int i = 0; i < p_sys->i_titles; i++ )
272         vlc_input_title_Delete( p_sys->titles[i] );
273     TAB_CLEAN( p_sys->i_titles, p_sys->titles );
274
275     /* Close libdvdread */
276     if( p_sys->p_title ) DVDCloseFile( p_sys->p_title );
277     if( p_sys->p_vts_file ) ifoClose( p_sys->p_vts_file );
278     if( p_sys->p_vmg_file ) ifoClose( p_sys->p_vmg_file );
279     DVDClose( p_sys->p_dvdread );
280
281     free( p_sys );
282 }
283
284 static int64_t dvdtime_to_time( dvd_time_t *dtime, uint8_t still_time )
285 {
286 /* Macro to convert Binary Coded Decimal to Decimal */
287 #define BCD2D(__x__) (((__x__ & 0xf0) >> 4) * 10 + (__x__ & 0x0f))
288
289     double f_fps, f_ms;
290     int64_t i_micro_second = 0;
291
292     if (still_time == 0 || still_time == 0xFF)
293     {
294         i_micro_second += (int64_t)(BCD2D(dtime->hour)) * 60 * 60 * 1000000;
295         i_micro_second += (int64_t)(BCD2D(dtime->minute)) * 60 * 1000000;
296         i_micro_second += (int64_t)(BCD2D(dtime->second)) * 1000000;
297
298         switch((dtime->frame_u & 0xc0) >> 6)
299         {
300         case 1:
301             f_fps = 25.0;
302             break;
303         case 3:
304             f_fps = 29.97;
305             break;
306         default:
307             f_fps = 2500.0;
308             break;
309         }
310         f_ms = BCD2D(dtime->frame_u&0x3f) * 1000.0 / f_fps;
311         i_micro_second += (int64_t)(f_ms * 1000.0);
312     }
313     else
314     {
315         i_micro_second = still_time;
316         i_micro_second = (int64_t)((double)i_micro_second * 1000000.0);
317     }
318
319     return i_micro_second;
320 }
321
322 /*****************************************************************************
323  * Control:
324  *****************************************************************************/
325 static int Control( demux_t *p_demux, int i_query, va_list args )
326 {
327     demux_sys_t *p_sys = p_demux->p_sys;
328     double f, *pf;
329     bool *pb;
330     int64_t *pi64;
331     input_title_t ***ppp_title;
332     int *pi_int;
333     int i;
334
335     switch( i_query )
336     {
337         case DEMUX_GET_POSITION:
338         {
339             pf = (double*) va_arg( args, double* );
340
341             if( p_sys->i_title_blocks > 0 )
342                 *pf = (double)p_sys->i_title_offset / p_sys->i_title_blocks;
343             else
344                 *pf = 0.0;
345
346             return VLC_SUCCESS;
347         }
348         case DEMUX_SET_POSITION:
349         {
350             f = (double)va_arg( args, double );
351
352             DvdReadSeek( p_demux, f * p_sys->i_title_blocks );
353
354             return VLC_SUCCESS;
355         }
356         case DEMUX_GET_TIME:
357             pi64 = (int64_t*)va_arg( args, int64_t * );
358             if( p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles )
359             {
360                 *pi64 = (int64_t) dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 ) /
361                         p_sys->i_title_blocks * p_sys->i_title_offset;
362                 return VLC_SUCCESS;
363             }
364             *pi64 = 0;
365             return VLC_EGENERIC;
366
367         case DEMUX_GET_LENGTH:
368             pi64 = (int64_t*)va_arg( args, int64_t * );
369             if( p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles )
370             {
371                 *pi64 = (int64_t)dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 );
372                 return VLC_SUCCESS;
373             }
374             *pi64 = 0;
375             return VLC_EGENERIC;
376
377         /* Special for access_demux */
378         case DEMUX_CAN_PAUSE:
379         case DEMUX_CAN_SEEK:
380         case DEMUX_CAN_CONTROL_PACE:
381             /* TODO */
382             pb = (bool*)va_arg( args, bool * );
383             *pb = true;
384             return VLC_SUCCESS;
385
386         case DEMUX_SET_PAUSE_STATE:
387             return VLC_SUCCESS;
388
389         case DEMUX_GET_TITLE_INFO:
390             ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
391             pi_int    = (int*)va_arg( args, int* );
392             *((int*)va_arg( args, int* )) = 1; /* Title offset */
393             *((int*)va_arg( args, int* )) = 1; /* Chapter offset */
394
395             /* Duplicate title infos */
396             *pi_int = p_sys->i_titles;
397             *ppp_title = malloc( sizeof(input_title_t **) * p_sys->i_titles );
398             for( i = 0; i < p_sys->i_titles; i++ )
399             {
400                 (*ppp_title)[i] = vlc_input_title_Duplicate(p_sys->titles[i]);
401             }
402             return VLC_SUCCESS;
403
404         case DEMUX_SET_TITLE:
405             i = (int)va_arg( args, int );
406             if( DvdReadSetArea( p_demux, i, 0, -1 ) != VLC_SUCCESS )
407             {
408                 msg_Warn( p_demux, "cannot set title/chapter" );
409                 return VLC_EGENERIC;
410             }
411             p_demux->info.i_update |=
412                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
413             p_demux->info.i_title = i;
414             p_demux->info.i_seekpoint = 0;
415             return VLC_SUCCESS;
416
417         case DEMUX_SET_SEEKPOINT:
418             i = (int)va_arg( args, int );
419             if( DvdReadSetArea( p_demux, -1, i, -1 ) != VLC_SUCCESS )
420             {
421                 msg_Warn( p_demux, "cannot set title/chapter" );
422                 return VLC_EGENERIC;
423             }
424             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
425             p_demux->info.i_seekpoint = i;
426             return VLC_SUCCESS;
427
428         case DEMUX_GET_PTS_DELAY:
429             pi64 = (int64_t*)va_arg( args, int64_t * );
430             *pi64 =
431                 INT64_C(1000) * var_InheritInteger( p_demux, "disc-caching" );
432             return VLC_SUCCESS;
433
434         /* TODO implement others */
435         default:
436             return VLC_EGENERIC;
437     }
438 }
439
440 /*****************************************************************************
441  * Demux:
442  *****************************************************************************/
443 static int Demux( demux_t *p_demux )
444 {
445     demux_sys_t *p_sys = p_demux->p_sys;
446
447     uint8_t p_buffer[DVD_VIDEO_LB_LEN * DVD_BLOCK_READ_ONCE];
448     int i_blocks_once, i_read;
449     int i;
450
451     /*
452      * Playback by cell in this pgc, starting at the cell for our chapter.
453      */
454
455     /*
456      * Check end of pack, and select the following one
457      */
458     if( !p_sys->i_pack_len )
459     {
460         /* Read NAV packet */
461         if( DVDReadBlocks( p_sys->p_title, p_sys->i_next_vobu,
462                            1, p_buffer ) != 1 )
463         {
464             msg_Err( p_demux, "read failed for block %d", p_sys->i_next_vobu );
465             dialog_Fatal( p_demux, _("Playback failure"),
466                           _("DVDRead could not read block %d."),
467                           p_sys->i_next_vobu );
468             return -1;
469         }
470
471         /* Basic check to be sure we don't have a empty title
472          * go to next title if so */
473         //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
474
475         /* Parse the contained dsi packet */
476         DvdReadHandleDSI( p_demux, p_buffer );
477
478         /* End of title */
479         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
480         {
481             if( p_sys->i_title + 1 >= p_sys->i_titles )
482             {
483                 return 0; /* EOF */
484             }
485
486             DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
487         }
488
489         if( p_sys->i_pack_len >= 1024 )
490         {
491             msg_Err( p_demux, "i_pack_len >= 1024 (%i). "
492                      "This shouldn't happen!", p_sys->i_pack_len );
493             return 0; /* EOF */
494         }
495
496         /* FIXME: Ugly kludge: we send the pack block to the input for it
497          * sometimes has a zero scr and restart the sync */
498         p_sys->i_cur_block++;
499         p_sys->i_title_offset++;
500
501         DemuxBlock( p_demux, p_buffer, DVD_VIDEO_LB_LEN );
502     }
503
504     if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
505     {
506         if( p_sys->i_title + 1 >= p_sys->i_titles )
507         {
508             return 0; /* EOF */
509         }
510
511         DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
512     }
513
514     /*
515      * Read actual data
516      */
517     i_blocks_once = __MIN( p_sys->i_pack_len, DVD_BLOCK_READ_ONCE );
518     p_sys->i_pack_len -= i_blocks_once;
519
520     /* Reads from DVD */
521     i_read = DVDReadBlocks( p_sys->p_title, p_sys->i_cur_block,
522                             i_blocks_once, p_buffer );
523     if( i_read != i_blocks_once )
524     {
525         msg_Err( p_demux, "read failed for %d/%d blocks at 0x%02x",
526                  i_read, i_blocks_once, p_sys->i_cur_block );
527         dialog_Fatal( p_demux, _("Playback failure"),
528                         _("DVDRead could not read %d/%d blocks at 0x%02x."),
529                         i_read, i_blocks_once, p_sys->i_cur_block );
530         return -1;
531     }
532
533     p_sys->i_cur_block += i_read;
534     p_sys->i_title_offset += i_read;
535
536 #if 0
537     msg_Dbg( p_demux, "i_blocks: %d len: %d current: 0x%02x",
538              i_read, p_sys->i_pack_len, p_sys->i_cur_block );
539 #endif
540
541     for( i = 0; i < i_read; i++ )
542     {
543         DemuxBlock( p_demux, p_buffer + i * DVD_VIDEO_LB_LEN,
544                     DVD_VIDEO_LB_LEN );
545     }
546
547 #undef p_pgc
548
549     return 1;
550 }
551
552 /*****************************************************************************
553  * DemuxBlock: demux a given block
554  *****************************************************************************/
555 static int DemuxBlock( demux_t *p_demux, const uint8_t *p, int len )
556 {
557     demux_sys_t *p_sys = p_demux->p_sys;
558
559     while( len > 0 )
560     {
561         int i_size = ps_pkt_size( p, len );
562         if( i_size <= 0 || i_size > len )
563         {
564             break;
565         }
566
567         /* Create a block */
568         block_t *p_pkt = block_Alloc( i_size );
569         memcpy( p_pkt->p_buffer, p, i_size);
570
571         /* Parse it and send it */
572         switch( 0x100 | p[3] )
573         {
574         case 0x1b9:
575         case 0x1bb:
576         case 0x1bc:
577
578 #ifdef DVDREAD_DEBUG
579             if( p[3] == 0xbc )
580             {
581                 msg_Warn( p_demux, "received a PSM packet" );
582             }
583             else if( p[3] == 0xbb )
584             {
585                 msg_Warn( p_demux, "received a SYSTEM packet" );
586             }
587 #endif
588             block_Release( p_pkt );
589             break;
590
591         case 0x1ba:
592         {
593             int64_t i_scr;
594             int i_mux_rate;
595             if( !ps_pkt_parse_pack( p_pkt, &i_scr, &i_mux_rate ) )
596             {
597                 es_out_Control( p_demux->out, ES_OUT_SET_PCR, i_scr );
598                 if( i_mux_rate > 0 ) p_sys->i_mux_rate = i_mux_rate;
599             }
600             block_Release( p_pkt );
601             break;
602         }
603         default:
604         {
605             int i_id = ps_pkt_id( p_pkt );
606             if( i_id >= 0xc0 )
607             {
608                 ps_track_t *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
609
610                 if( !tk->b_seen )
611                 {
612                     ESNew( p_demux, i_id, 0 );
613                 }
614                 if( tk->b_seen && tk->es &&
615                     !ps_pkt_parse_pes( p_pkt, tk->i_skip ) )
616                 {
617                     es_out_Send( p_demux->out, tk->es, p_pkt );
618                 }
619                 else
620                 {
621                     block_Release( p_pkt );
622                 }
623             }
624             else
625             {
626                 block_Release( p_pkt );
627             }
628             break;
629         }
630         }
631
632         p += i_size;
633         len -= i_size;
634     }
635
636     return VLC_SUCCESS;
637 }
638
639 /*****************************************************************************
640  * ESNew: register a new elementary stream
641  *****************************************************************************/
642 static void ESNew( demux_t *p_demux, int i_id, int i_lang )
643 {
644     demux_sys_t *p_sys = p_demux->p_sys;
645     ps_track_t  *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
646     char psz_language[3];
647
648     if( tk->b_seen ) return;
649
650     if( ps_track_fill( tk, 0, i_id ) )
651     {
652         msg_Warn( p_demux, "unknown codec for id=0x%x", i_id );
653         return;
654     }
655
656     psz_language[0] = psz_language[1] = psz_language[2] = 0;
657     if( i_lang && i_lang != 0xffff )
658     {
659         psz_language[0] = (i_lang >> 8)&0xff;
660         psz_language[1] = (i_lang     )&0xff;
661     }
662
663     /* Add a new ES */
664     if( tk->fmt.i_cat == VIDEO_ES )
665     {
666         tk->fmt.video.i_sar_num = p_sys->i_sar_num;
667         tk->fmt.video.i_sar_den = p_sys->i_sar_den;
668     }
669     else if( tk->fmt.i_cat == AUDIO_ES )
670     {
671 #if 0
672         int i_audio = -1;
673         /* find the audio number PLEASE find another way */
674         if( (i_id&0xbdf8) == 0xbd88 )       /* dts */
675         {
676             i_audio = i_id&0x07;
677         }
678         else if( (i_id&0xbdf0) == 0xbd80 )  /* a52 */
679         {
680             i_audio = i_id&0xf;
681         }
682         else if( (i_id&0xbdf0) == 0xbda0 )  /* lpcm */
683         {
684             i_audio = i_id&0x1f;
685         }
686         else if( ( i_id&0xe0 ) == 0xc0 )    /* mpga */
687         {
688             i_audio = i_id&0x1f;
689         }
690 #endif
691
692         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
693     }
694     else if( tk->fmt.i_cat == SPU_ES )
695     {
696         /* Palette */
697         tk->fmt.subs.spu.palette[0] = 0xBeef;
698         memcpy( &tk->fmt.subs.spu.palette[1], p_sys->clut,
699                 16 * sizeof( uint32_t ) );
700
701         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
702     }
703
704     tk->es = es_out_Add( p_demux->out, &tk->fmt );
705     tk->b_seen = true;
706 }
707
708 /*****************************************************************************
709  * DvdReadSetArea: initialize input data for title x, chapter y.
710  * It should be called for each user navigation request.
711  *****************************************************************************
712  * Take care that i_title and i_chapter start from 0.
713  *****************************************************************************/
714 static int DvdReadSetArea( demux_t *p_demux, int i_title, int i_chapter,
715                            int i_angle )
716 {
717     VLC_UNUSED( i_angle );
718
719     demux_sys_t *p_sys = p_demux->p_sys;
720     int pgc_id = 0, pgn = 0;
721     int i;
722
723 #define p_pgc p_sys->p_cur_pgc
724 #define p_vmg p_sys->p_vmg_file
725 #define p_vts p_sys->p_vts_file
726
727     if( i_title >= 0 && i_title < p_sys->i_titles &&
728         i_title != p_sys->i_title )
729     {
730         int i_start_cell, i_end_cell;
731
732         if( p_sys->p_title != NULL ) DVDCloseFile( p_sys->p_title );
733         if( p_vts != NULL ) ifoClose( p_vts );
734         p_sys->i_title = i_title;
735
736         /*
737          *  We have to load all title information
738          */
739         msg_Dbg( p_demux, "open VTS %d, for title %d",
740                  p_vmg->tt_srpt->title[i_title].title_set_nr, i_title + 1 );
741
742         /* Ifo vts */
743         if( !( p_vts = ifoOpen( p_sys->p_dvdread,
744                p_vmg->tt_srpt->title[i_title].title_set_nr ) ) )
745         {
746             msg_Err( p_demux, "fatal error in vts ifo" );
747             return VLC_EGENERIC;
748         }
749
750         /* Title position inside the selected vts */
751         p_sys->i_ttn = p_vmg->tt_srpt->title[i_title].vts_ttn;
752
753         /* Find title start/end */
754         pgc_id = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgcn;
755         pgn = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgn;
756         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
757
758         if( p_pgc->cell_playback == NULL )
759         {
760             msg_Err( p_demux, "Invalid PGC (cell_playback_offset)" );
761             return VLC_EGENERIC;
762         }
763
764         p_sys->i_title_start_cell =
765             i_start_cell = p_pgc->program_map[pgn - 1] - 1;
766         p_sys->i_title_start_block =
767             p_pgc->cell_playback[i_start_cell].first_sector;
768
769         p_sys->i_title_end_cell =
770             i_end_cell = p_pgc->nr_of_cells - 1;
771         p_sys->i_title_end_block =
772             p_pgc->cell_playback[i_end_cell].last_sector;
773
774         p_sys->i_title_offset = 0;
775
776         p_sys->i_title_blocks = 0;
777         for( i = i_start_cell; i <= i_end_cell; i++ )
778         {
779             p_sys->i_title_blocks += p_pgc->cell_playback[i].last_sector -
780                 p_pgc->cell_playback[i].first_sector + 1;
781         }
782
783         msg_Dbg( p_demux, "title %d vts_title %d pgc %d pgn %d "
784                  "start %d end %d blocks: %d",
785                  i_title + 1, p_sys->i_ttn, pgc_id, pgn,
786                  p_sys->i_title_start_block, p_sys->i_title_end_block,
787                  p_sys->i_title_blocks );
788
789         /*
790          * Set properties for current chapter
791          */
792         p_sys->i_chapter = 0;
793         p_sys->i_chapters =
794             p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].nr_of_ptts;
795
796         pgc_id = p_vts->vts_ptt_srpt->title[
797                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgcn;
798         pgn = p_vts->vts_ptt_srpt->title[
799                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgn;
800
801         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
802         p_sys->i_pack_len = 0;
803         p_sys->i_next_cell =
804             p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
805         DvdReadFindCell( p_demux );
806
807         p_sys->i_next_vobu = p_sys->i_cur_block =
808             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
809
810         /*
811          * Angle management
812          */
813         p_sys->i_angles = p_vmg->tt_srpt->title[i_title].nr_of_angles;
814         if( p_sys->i_angle > p_sys->i_angles ) p_sys->i_angle = 1;
815
816         /*
817          * We've got enough info, time to open the title set data.
818          */
819         if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
820             p_vmg->tt_srpt->title[i_title].title_set_nr,
821             DVD_READ_TITLE_VOBS ) ) )
822         {
823             msg_Err( p_demux, "cannot open title (VTS_%02d_1.VOB)",
824                      p_vmg->tt_srpt->title[i_title].title_set_nr );
825             return VLC_EGENERIC;
826         }
827
828         //IfoPrintTitle( p_demux );
829
830         /*
831          * Destroy obsolete ES by reinitializing program 0
832          * and find all ES in title with ifo data
833          */
834         es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
835
836         for( i = 0; i < PS_TK_COUNT; i++ )
837         {
838             ps_track_t *tk = &p_sys->tk[i];
839             if( tk->b_seen )
840             {
841                 es_format_Clean( &tk->fmt );
842                 if( tk->es ) es_out_Del( p_demux->out, tk->es );
843             }
844             tk->b_seen = false;
845         }
846
847         if( p_demux->info.i_title != i_title )
848         {
849             p_demux->info.i_update |=
850                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
851             p_demux->info.i_title = i_title;
852             p_demux->info.i_seekpoint = 0;
853         }
854
855         /* TODO: re-add angles */
856
857
858         ESNew( p_demux, 0xe0, 0 ); /* Video, FIXME ? */
859         const video_attr_t *p_attr = &p_vts->vtsi_mat->vts_video_attr;
860         int i_video_height = p_attr->video_format != 0 ? 576 : 480;
861         int i_video_width;
862         switch( p_attr->picture_size )
863         {
864         case 0:
865             i_video_width = 720;
866             break;
867         case 1:
868             i_video_width = 704;
869             break;
870         case 2:
871             i_video_width = 352;
872             break;
873         default:
874         case 3:
875             i_video_width = 352;
876             i_video_height /= 2;
877             break;
878         }
879         switch( p_attr->display_aspect_ratio )
880         {
881         case 0:
882             p_sys->i_sar_num = 4 * i_video_height;
883             p_sys->i_sar_den = 3 * i_video_width;
884             break;
885         case 3:
886             p_sys->i_sar_num = 16 * i_video_height;
887             p_sys->i_sar_den =  9 * i_video_width;
888             break;
889         default:
890             p_sys->i_sar_num = 0;
891             p_sys->i_sar_den = 0;
892             break;
893         }
894
895 #define audio_control \
896     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
897
898         /* Audio ES, in the order they appear in the .ifo */
899         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams; i++ )
900         {
901             int i_position = 0;
902             uint16_t i_id;
903
904             //IfoPrintAudio( p_demux, i );
905
906             /* Audio channel is active if first byte is 0x80 */
907             if( audio_control & 0x8000 )
908             {
909                 i_position = ( audio_control & 0x7F00 ) >> 8;
910
911                 msg_Dbg( p_demux, "audio position  %d", i_position );
912                 switch( p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format )
913                 {
914                 case 0x00: /* A52 */
915                     i_id = (0x80 + i_position) | 0xbd00;
916                     break;
917                 case 0x02:
918                 case 0x03: /* MPEG audio */
919                     i_id = 0xc000 + i_position;
920                     break;
921                 case 0x04: /* LPCM */
922                     i_id = (0xa0 + i_position) | 0xbd00;
923                     break;
924                 case 0x06: /* DTS */
925                     i_id = (0x88 + i_position) | 0xbd00;
926                     break;
927                 default:
928                     i_id = 0;
929                     msg_Err( p_demux, "unknown audio type %.2x",
930                         p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format );
931                 }
932
933                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
934                        vts_audio_attr[i - 1].lang_code );
935             }
936         }
937 #undef audio_control
938
939 #define spu_palette \
940     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->palette
941
942         memcpy( p_sys->clut, spu_palette, 16 * sizeof( uint32_t ) );
943
944 #define spu_control \
945     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
946
947         /* Sub Picture ES */
948         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
949         {
950             int i_position = 0;
951             uint16_t i_id;
952
953             //IfoPrintSpu( p_sys, i );
954             msg_Dbg( p_demux, "spu %d 0x%02x", i, spu_control );
955
956             if( spu_control & 0x80000000 )
957             {
958                 /*  there are several streams for one spu */
959                 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
960                 {
961                     /* 16:9 */
962                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
963                     {
964                     case 1: /* letterbox */
965                         i_position = spu_control & 0xff;
966                         break;
967                     case 2: /* pan&scan */
968                         i_position = ( spu_control >> 8 ) & 0xff;
969                         break;
970                     default: /* widescreen */
971                         i_position = ( spu_control >> 16 ) & 0xff;
972                         break;
973                     }
974                 }
975                 else
976                 {
977                     /* 4:3 */
978                     i_position = ( spu_control >> 24 ) & 0x7F;
979                 }
980
981                 i_id = (0x20 + i_position) | 0xbd00;
982
983                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
984                        vts_subp_attr[i - 1].lang_code );
985             }
986         }
987 #undef spu_control
988
989     }
990     else if( i_title != -1 && i_title != p_sys->i_title )
991
992     {
993         return VLC_EGENERIC; /* Couldn't set title */
994     }
995
996     /*
997      * Chapter selection
998      */
999
1000     if( i_chapter >= 0 && i_chapter < p_sys->i_chapters )
1001     {
1002         pgc_id = p_vts->vts_ptt_srpt->title[
1003                      p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
1004         pgn = p_vts->vts_ptt_srpt->title[
1005                   p_sys->i_ttn - 1].ptt[i_chapter].pgn;
1006
1007         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
1008         if( p_pgc->cell_playback == NULL )
1009             return VLC_EGENERIC; /* Couldn't set chapter */
1010
1011         p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
1012         p_sys->i_chapter = i_chapter;
1013         DvdReadFindCell( p_demux );
1014
1015         p_sys->i_title_offset = 0;
1016         for( i = p_sys->i_title_start_cell; i < p_sys->i_cur_cell; i++ )
1017         {
1018             p_sys->i_title_offset += p_pgc->cell_playback[i].last_sector -
1019                 p_pgc->cell_playback[i].first_sector + 1;
1020         }
1021
1022         p_sys->i_pack_len = 0;
1023         p_sys->i_next_vobu = p_sys->i_cur_block =
1024             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1025
1026         if( p_demux->info.i_seekpoint != i_chapter )
1027         {
1028             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1029             p_demux->info.i_seekpoint = i_chapter;
1030         }
1031     }
1032     else if( i_chapter != -1 )
1033
1034     {
1035         return VLC_EGENERIC; /* Couldn't set chapter */
1036     }
1037
1038 #undef p_pgc
1039 #undef p_vts
1040 #undef p_vmg
1041
1042     return VLC_SUCCESS;
1043 }
1044
1045 /*****************************************************************************
1046  * DvdReadSeek : Goes to a given position on the stream.
1047  *****************************************************************************
1048  * This one is used by the input and translate chronological position from
1049  * input to logical position on the device.
1050  *****************************************************************************/
1051 static void DvdReadSeek( demux_t *p_demux, int i_block_offset )
1052 {
1053     demux_sys_t *p_sys = p_demux->p_sys;
1054     int i_chapter = 0;
1055     int i_cell = 0;
1056     int i_vobu = 0;
1057     int i_sub_cell = 0;
1058     int i_block;
1059
1060 #define p_pgc p_sys->p_cur_pgc
1061 #define p_vts p_sys->p_vts_file
1062
1063     /* Find cell */
1064     i_block = i_block_offset;
1065     for( i_cell = p_sys->i_title_start_cell;
1066          i_cell <= p_sys->i_title_end_cell; i_cell++ )
1067     {
1068         if( i_block < (int)p_pgc->cell_playback[i_cell].last_sector -
1069             (int)p_pgc->cell_playback[i_cell].first_sector + 1 ) break;
1070
1071         i_block -= (p_pgc->cell_playback[i_cell].last_sector -
1072             p_pgc->cell_playback[i_cell].first_sector + 1);
1073     }
1074     if( i_cell > p_sys->i_title_end_cell )
1075     {
1076         msg_Err( p_demux, "couldn't find cell for block %i", i_block_offset );
1077         return;
1078     }
1079     i_block += p_pgc->cell_playback[i_cell].first_sector;
1080     p_sys->i_title_offset = i_block_offset;
1081
1082     /* Find chapter */
1083     for( i_chapter = 0; i_chapter < p_sys->i_chapters; i_chapter++ )
1084     {
1085         int pgc_id, pgn, i_tmp;
1086
1087         pgc_id = p_vts->vts_ptt_srpt->title[
1088                     p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
1089         pgn = p_vts->vts_ptt_srpt->title[
1090                     p_sys->i_ttn - 1].ptt[i_chapter].pgn;
1091
1092         i_tmp = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc->program_map[pgn-1];
1093
1094         if( i_tmp > i_cell ) break;
1095     }
1096
1097     if( i_chapter < p_sys->i_chapters &&
1098         p_demux->info.i_seekpoint != i_chapter )
1099     {
1100         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1101         p_demux->info.i_seekpoint = i_chapter;
1102     }
1103
1104     /* Find vobu */
1105     while( (int)p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu] <= i_block )
1106     {
1107         i_vobu++;
1108     }
1109
1110     /* Find sub_cell */
1111     while( p_vts->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1112            p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1113     {
1114         i_sub_cell++;
1115     }
1116
1117 #if 1
1118     msg_Dbg( p_demux, "cell %d i_sub_cell %d chapter %d vobu %d "
1119              "cell_sector %d vobu_sector %d sub_cell_sector %d",
1120              i_cell, i_sub_cell, i_chapter, i_vobu,
1121              p_sys->p_cur_pgc->cell_playback[i_cell].first_sector,
1122              p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu],
1123              p_vts->vts_c_adt->cell_adr_table[i_sub_cell - 1].start_sector);
1124 #endif
1125
1126     p_sys->i_cur_block = i_block;
1127     p_sys->i_next_vobu = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu];
1128     p_sys->i_pack_len = p_sys->i_next_vobu - i_block;
1129     p_sys->i_cur_cell = i_cell;
1130     p_sys->i_chapter = i_chapter;
1131     DvdReadFindCell( p_demux );
1132
1133 #undef p_vts
1134 #undef p_pgc
1135
1136     return;
1137 }
1138
1139 /*****************************************************************************
1140  * DvdReadHandleDSI
1141  *****************************************************************************/
1142 static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
1143 {
1144     demux_sys_t *p_sys = p_demux->p_sys;
1145
1146     navRead_DSI( &p_sys->dsi_pack, &p_data[DSI_START_BYTE] );
1147
1148     /*
1149      * Determine where we go next.  These values are the ones we mostly
1150      * care about.
1151      */
1152     p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
1153     p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
1154
1155     /*
1156      * Store the timecodes so we can get the current time
1157      */
1158     p_sys->i_title_cur_time = (mtime_t) (p_sys->dsi_pack.dsi_gi.nv_pck_scr / 90 * 1000);
1159     p_sys->i_cell_cur_time = (mtime_t) dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 );
1160
1161     /*
1162      * If we're not at the end of this cell, we can determine the next
1163      * VOBU to display using the VOBU_SRI information section of the
1164      * DSI.  Using this value correctly follows the current angle,
1165      * avoiding the doubled scenes in The Matrix, and makes our life
1166      * really happy.
1167      */
1168
1169     p_sys->i_next_vobu = p_sys->i_cur_block +
1170         ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1171
1172     if( p_sys->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL
1173         && p_sys->i_angle > 1 )
1174     {
1175         switch( ( p_sys->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1176         {
1177         case 0x4:
1178             /* Interleaved unit with no angle */
1179             if( p_sys->dsi_pack.sml_pbi.ilvu_sa != 0 )
1180             {
1181                 p_sys->i_next_vobu = p_sys->i_cur_block +
1182                     p_sys->dsi_pack.sml_pbi.ilvu_sa;
1183                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1184             }
1185             else
1186             {
1187                 p_sys->i_next_vobu = p_sys->i_cur_block +
1188                     p_sys->dsi_pack.dsi_gi.vobu_ea + 1;
1189             }
1190             break;
1191         case 0x5:
1192             /* vobu is end of ilvu */
1193             if( p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address )
1194             {
1195                 p_sys->i_next_vobu = p_sys->i_cur_block +
1196                     p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address;
1197                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1198
1199                 break;
1200             }
1201         case 0x6:
1202             /* vobu is beginning of ilvu */
1203         case 0x9:
1204             /* next scr is 0 */
1205         case 0xa:
1206             /* entering interleaved section */
1207         case 0x8:
1208             /* non interleaved cells in interleaved section */
1209         default:
1210             p_sys->i_next_vobu = p_sys->i_cur_block +
1211                 ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1212             break;
1213         }
1214     }
1215     else if( p_sys->dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
1216     {
1217         p_sys->i_cur_cell = p_sys->i_next_cell;
1218
1219         /* End of title */
1220         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells ) return;
1221
1222         DvdReadFindCell( p_demux );
1223
1224         p_sys->i_next_vobu =
1225             p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1226
1227         p_sys->i_cell_duration = (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 );
1228     }
1229
1230
1231 #if 0
1232     msg_Dbg( p_demux, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d c_time %lld",
1233              p_sys->dsi_pack.dsi_gi.nv_pck_scr,
1234              p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
1235              p_sys->dsi_pack.dsi_gi.vobu_ea,
1236              p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
1237              p_sys->dsi_pack.dsi_gi.vobu_c_idn,
1238              dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 ) );
1239
1240     msg_Dbg( p_demux, "cell duration: %lld",
1241              (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 ) );
1242
1243     msg_Dbg( p_demux, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1244              p_sys->dsi_pack.sml_pbi.category,
1245              p_sys->dsi_pack.sml_pbi.ilvu_ea,
1246              p_sys->dsi_pack.sml_pbi.ilvu_sa,
1247              p_sys->dsi_pack.sml_pbi.size );
1248
1249     msg_Dbg( p_demux, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1250              p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1251              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
1252              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);
1253 #endif
1254 }
1255
1256 /*****************************************************************************
1257  * DvdReadFindCell
1258  *****************************************************************************/
1259 static void DvdReadFindCell( demux_t *p_demux )
1260 {
1261     demux_sys_t *p_sys = p_demux->p_sys;
1262
1263     pgc_t *p_pgc;
1264     int   pgc_id, pgn;
1265     int   i = 0;
1266
1267 #define cell p_sys->p_cur_pgc->cell_playback
1268
1269     if( cell[p_sys->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1270     {
1271         p_sys->i_cur_cell += p_sys->i_angle - 1;
1272
1273         while( cell[p_sys->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1274         {
1275             i++;
1276         }
1277         p_sys->i_next_cell = p_sys->i_cur_cell + i + 1;
1278     }
1279     else
1280     {
1281         p_sys->i_next_cell = p_sys->i_cur_cell + 1;
1282     }
1283
1284 #undef cell
1285
1286     if( p_sys->i_chapter + 1 >= p_sys->i_chapters ) return;
1287
1288     pgc_id = p_sys->p_vts_file->vts_ptt_srpt->title[
1289                 p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgcn;
1290     pgn = p_sys->p_vts_file->vts_ptt_srpt->title[
1291               p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgn;
1292     p_pgc = p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
1293
1294     if( p_sys->i_cur_cell >= p_pgc->program_map[pgn - 1] - 1 )
1295     {
1296         p_sys->i_chapter++;
1297
1298         if( p_sys->i_chapter < p_sys->i_chapters &&
1299             p_demux->info.i_seekpoint != p_sys->i_chapter )
1300         {
1301             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1302             p_demux->info.i_seekpoint = p_sys->i_chapter;
1303         }
1304     }
1305 }
1306
1307 /*****************************************************************************
1308  * DemuxTitles: get the titles/chapters structure
1309  *****************************************************************************/
1310 static void DemuxTitles( demux_t *p_demux, int *pi_angle )
1311 {
1312     VLC_UNUSED( pi_angle );
1313
1314     demux_sys_t *p_sys = p_demux->p_sys;
1315     input_title_t *t;
1316     seekpoint_t *s;
1317
1318     /* Find out number of titles/chapters */
1319 #define tt_srpt p_sys->p_vmg_file->tt_srpt
1320
1321     int32_t i_titles = tt_srpt->nr_of_srpts;
1322     msg_Dbg( p_demux, "number of titles: %d", i_titles );
1323
1324     for( int i = 0; i < i_titles; i++ )
1325     {
1326         int32_t i_chapters = 0;
1327         int j;
1328
1329         i_chapters = tt_srpt->title[i].nr_of_ptts;
1330         msg_Dbg( p_demux, "title %d has %d chapters", i, i_chapters );
1331
1332         t = vlc_input_title_New();
1333
1334         for( j = 0; j < __MAX( i_chapters, 1 ); j++ )
1335         {
1336             s = vlc_seekpoint_New();
1337             TAB_APPEND( t->i_seekpoint, t->seekpoint, s );
1338         }
1339
1340         TAB_APPEND( p_sys->i_titles, p_sys->titles, t );
1341     }
1342
1343 #undef tt_srpt
1344 }