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