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