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