Access strings (Refs:#438)
[vlc.git] / modules / access / dvdread.c
1 /*****************************************************************************
2  * dvdread.c : DvdRead input module for vlc
3  *****************************************************************************
4  * Copyright (C) 2001-2004 the VideoLAN team
5  * $Id$
6  *
7  * Authors: St�hane 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 #include <stdio.h>
29 #include <stdlib.h>                                      /* malloc(), free() */
30 #include <string.h>                                              /* strdup() */
31
32 #include <vlc/vlc.h>
33 #include <vlc/input.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 #include <string.h>
47
48 #include <dvdread/dvd_reader.h>
49 #include <dvdread/ifo_types.h>
50 #include <dvdread/ifo_read.h>
51 #include <dvdread/nav_read.h>
52 #include <dvdread/nav_print.h>
53
54 /*****************************************************************************
55  * Module descriptor
56  *****************************************************************************/
57 #define ANGLE_TEXT N_("DVD angle")
58 #define ANGLE_LONGTEXT N_( \
59     "Allows you to select the default DVD angle." )
60
61 #define CACHING_TEXT N_("Caching value in ms")
62 #define CACHING_LONGTEXT N_( \
63     "Default caching value for DVDs. " \
64     "This value should be set in milliseconds." )
65
66 #define CSSMETHOD_TEXT N_("Method used by libdvdcss for decryption")
67 #define CSSMETHOD_LONGTEXT N_( \
68     "Set the method used by libdvdcss for key decryption.\n" \
69     "title: decrypted title key is guessed from the encrypted sectors of " \
70            "the stream. Thus it should work with a file as well as the " \
71            "DVD device. But it sometimes takes much time to decrypt a title " \
72            "key and may even fail. With this method, the key is only checked "\
73            "at the beginning of each title, so it won't work if the key " \
74            "changes in the middle of a title.\n" \
75     "disc: the disc key is first cracked, then all title keys can be " \
76            "decrypted instantly, which allows us to check them often.\n" \
77     "key: the same as \"disc\" if you don't have a file with player keys " \
78            "at compilation time. If you do, the decryption of the disc key " \
79            "will be faster with this method. It is the one that was used by " \
80            "libcss.\n" \
81     "The default method is: key.")
82
83 static char *psz_css_list[] = { "title", "disc", "key" };
84 static char *psz_css_list_text[] = { N_("title"), N_("Disc"), N_("Key") };
85
86 static int  Open ( vlc_object_t * );
87 static void Close( vlc_object_t * );
88
89 vlc_module_begin();
90     set_shortname( _("DVD without menus") );
91     set_description( _("DVDRead Input (DVD without menu support)") );
92     set_category( CAT_INPUT );
93     set_subcategory( SUBCAT_INPUT_ACCESS );
94     add_integer( "dvdread-angle", 1, NULL, ANGLE_TEXT,
95         ANGLE_LONGTEXT, VLC_FALSE );
96     add_integer( "dvdread-caching", DEFAULT_PTS_DELAY / 1000, NULL,
97         CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
98     add_string( "dvdread-css-method", NULL, NULL, CSSMETHOD_TEXT,
99                 CSSMETHOD_LONGTEXT, VLC_TRUE );
100         change_string_list( psz_css_list, psz_css_list_text, 0 );
101     set_capability( "access_demux", 0 );
102     add_shortcut( "dvd" );
103     add_shortcut( "dvdread" );
104     add_shortcut( "dvdsimple" );
105     set_callbacks( Open, Close );
106 vlc_module_end();
107
108 /* how many blocks DVDRead will read in each loop */
109 #define DVD_BLOCK_READ_ONCE 4
110
111 /*****************************************************************************
112  * Local prototypes
113  *****************************************************************************/
114
115 struct demux_sys_t
116 {
117     /* DVDRead state */
118     dvd_reader_t *p_dvdread;
119     dvd_file_t   *p_title;
120
121     ifo_handle_t *p_vmg_file;
122     ifo_handle_t *p_vts_file;
123
124     int i_title;
125     int i_chapter, i_chapters;
126     int i_angle, i_angles;
127
128     tt_srpt_t    *p_tt_srpt;
129     pgc_t        *p_cur_pgc;
130     dsi_t        dsi_pack;
131     int          i_ttn;
132
133     int i_pack_len;
134     int i_cur_block;
135     int i_next_vobu;
136
137     int i_mux_rate;
138
139     /* Current title start/end blocks */
140     int i_title_start_block;
141     int i_title_end_block;
142     int i_title_blocks;
143     int i_title_offset;
144     mtime_t i_title_cur_time;
145
146     int i_title_start_cell;
147     int i_title_end_cell;
148     int i_cur_cell;
149     int i_next_cell;
150     mtime_t i_cell_cur_time;
151     mtime_t i_cell_duration;
152
153     /* Track */
154     ps_track_t    tk[PS_TK_COUNT];
155
156     int           i_titles;
157     input_title_t **titles;
158
159     /* Video */
160     int i_aspect;
161
162     /* SPU */
163     uint32_t clut[16];
164 };
165
166 static int Control   ( demux_t *, int, va_list );
167 static int Demux     ( demux_t * );
168 static int DemuxBlock( demux_t *, uint8_t *, int );
169
170 static void DemuxTitles( demux_t *, int * );
171 static void ESNew( demux_t *, int, int );
172
173 static int  DvdReadSetArea  ( demux_t *, int, int, int );
174 static void DvdReadSeek     ( demux_t *, int );
175 static void DvdReadHandleDSI( demux_t *, uint8_t * );
176 static void DvdReadFindCell ( demux_t * );
177
178 /*****************************************************************************
179  * Open:
180  *****************************************************************************/
181 static int Open( vlc_object_t *p_this )
182 {
183     demux_t      *p_demux = (demux_t*)p_this;
184     demux_sys_t  *p_sys;
185     char         *psz_name;
186     char         *psz_dvdcss_env;
187     dvd_reader_t *p_dvdread;
188     ifo_handle_t *p_vmg_file;
189     vlc_value_t  val;
190
191     if( !p_demux->psz_path || !*p_demux->psz_path )
192     {
193         /* Only when selected */
194         if( !p_this->b_force ) return VLC_EGENERIC;
195
196         psz_name = var_CreateGetString( p_this, "dvd" );
197         if( !psz_name )
198         {
199             psz_name = strdup("");
200         }
201     }
202     else
203         psz_name = strdup( p_demux->psz_path );
204
205 #ifdef WIN32
206     if( psz_name[0] && psz_name[1] == ':' &&
207         psz_name[2] == '\\' && psz_name[3] == '\0' ) psz_name[2] = '\0';
208 #endif
209
210     /* Override environment variable DVDCSS_METHOD with config option
211      * (FIXME: this creates a small memory leak) */
212     psz_dvdcss_env = config_GetPsz( p_demux, "dvdread-css-method" );
213     if( psz_dvdcss_env && *psz_dvdcss_env )
214     {
215         char *psz_env;
216
217         psz_env = malloc( strlen("DVDCSS_METHOD=") +
218                           strlen( psz_dvdcss_env ) + 1 );
219         if( !psz_env )
220         {
221             free( psz_dvdcss_env );
222             return VLC_ENOMEM;
223         }
224
225         sprintf( psz_env, "%s%s", "DVDCSS_METHOD=", psz_dvdcss_env );
226
227         putenv( psz_env );
228     }
229     if( psz_dvdcss_env ) free( psz_dvdcss_env );
230
231     /* Open dvdread */
232     if( !(p_dvdread = DVDOpen( psz_name )) )
233     {
234         msg_Err( p_demux, "DVDRead cannot open source: %s", psz_name );
235         free( psz_name );
236         return VLC_EGENERIC;
237     }
238     free( psz_name );
239
240     /* Ifo allocation & initialisation */
241     if( !( p_vmg_file = ifoOpen( p_dvdread, 0 ) ) )
242     {
243         msg_Warn( p_demux, "cannot open VMG info" );
244         return VLC_EGENERIC;
245     }
246     msg_Dbg( p_demux, "VMG opened" );
247
248     /* Fill p_demux field */
249     p_demux->pf_demux = Demux;
250     p_demux->pf_control = Control;
251     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
252     memset( p_sys, 0, sizeof( demux_sys_t ) );
253
254     ps_track_init( p_sys->tk );
255     p_sys->i_aspect = -1;
256     p_sys->i_title_cur_time = (mtime_t) 0;
257     p_sys->i_cell_cur_time = (mtime_t) 0;
258     p_sys->i_cell_duration = (mtime_t) 0;
259
260     p_sys->p_dvdread = p_dvdread;
261     p_sys->p_vmg_file = p_vmg_file;
262     p_sys->p_title = NULL;
263     p_sys->p_vts_file = NULL;
264
265     p_sys->i_title = p_sys->i_chapter = -1;
266     p_sys->i_mux_rate = 0;
267
268     var_Create( p_demux, "dvdread-angle", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
269     var_Get( p_demux, "dvdread-angle", &val );
270     p_sys->i_angle = val.i_int > 0 ? val.i_int : 1;
271
272     DemuxTitles( p_demux, &p_sys->i_angle );
273     if( DvdReadSetArea( p_demux, 0, 0, p_sys->i_angle ) != VLC_SUCCESS )
274     {
275         Close( p_this );
276         msg_Err( p_demux, "DvdReadSetArea(0,0,%i) failed (can't decrypt DVD?)",
277                  p_sys->i_angle );
278         return VLC_EGENERIC;
279     }
280
281     /* Update default_pts to a suitable value for dvdread access */
282     var_Create( p_demux, "dvdread-caching",
283                 VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
284
285     return VLC_SUCCESS;
286 }
287
288 /*****************************************************************************
289  * Close:
290  *****************************************************************************/
291 static void Close( vlc_object_t *p_this )
292 {
293     demux_t     *p_demux = (demux_t*)p_this;
294     demux_sys_t *p_sys = p_demux->p_sys;
295     int i;
296
297     for( i = 0; i < PS_TK_COUNT; i++ )
298     {
299         ps_track_t *tk = &p_sys->tk[i];
300         if( tk->b_seen )
301         {
302             es_format_Clean( &tk->fmt );
303             if( tk->es ) es_out_Del( p_demux->out, tk->es );
304         }
305     }
306
307     /* Close libdvdread */
308     if( p_sys->p_title ) DVDCloseFile( p_sys->p_title );
309     if( p_sys->p_vts_file ) ifoClose( p_sys->p_vts_file );
310     if( p_sys->p_vmg_file ) ifoClose( p_sys->p_vmg_file );
311     DVDClose( p_sys->p_dvdread );
312
313     free( p_sys );
314 }
315
316 static int64_t dvdtime_to_time( dvd_time_t *dtime, uint8_t still_time )
317 {
318 /* Macro to convert Binary Coded Decimal to Decimal */
319 #define BCD2D(__x__) (((__x__ & 0xf0) >> 4) * 10 + (__x__ & 0x0f))
320
321     double f_fps, f_ms;
322     int64_t i_micro_second = 0;
323
324     if (still_time == 0 || still_time == 0xFF)
325     {
326         i_micro_second += (int64_t)(BCD2D(dtime->hour)) * 60 * 60 * 1000000;
327         i_micro_second += (int64_t)(BCD2D(dtime->minute)) * 60 * 1000000;
328         i_micro_second += (int64_t)(BCD2D(dtime->second)) * 1000000;
329
330         switch((dtime->frame_u & 0xc0) >> 6) 
331         {
332         case 1:
333             f_fps = 25.0;
334             break;
335         case 3:
336             f_fps = 29.97;
337             break;
338         default:
339             f_fps = 2500.0;
340             break;
341         }
342         f_ms = BCD2D(dtime->frame_u&0x3f) * 1000.0 / f_fps;
343         i_micro_second += (int64_t)(f_ms * 1000.0);
344     }
345     else
346     {
347         i_micro_second = still_time;
348         i_micro_second = (int64_t)((double)i_micro_second * 1000000.0);
349     }
350
351     return i_micro_second;
352 }
353
354 /*****************************************************************************
355  * Control:
356  *****************************************************************************/
357 static int Control( demux_t *p_demux, int i_query, va_list args )
358 {
359     demux_sys_t *p_sys = p_demux->p_sys;
360     double f, *pf;
361     vlc_bool_t *pb;
362     int64_t *pi64;
363     input_title_t ***ppp_title;
364     int *pi_int;
365     int i;
366
367     switch( i_query )
368     {
369         case DEMUX_GET_POSITION:
370         {
371             pf = (double*) va_arg( args, double* );
372
373             if( p_sys->i_title_blocks > 0 )
374                 *pf = (double)p_sys->i_title_offset / p_sys->i_title_blocks;
375             else
376                 *pf = 0.0;
377
378             return VLC_SUCCESS;
379         }
380         case DEMUX_SET_POSITION:
381         {
382             f = (double)va_arg( args, double );
383
384             DvdReadSeek( p_demux, f * p_sys->i_title_blocks );
385
386             return VLC_SUCCESS;
387         }
388         case DEMUX_GET_TIME:
389             pi64 = (int64_t*)va_arg( args, int64_t * );
390             if( p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles )
391             {
392                 *pi64 = (int64_t) dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 ) / 
393                         p_sys->i_title_blocks * p_sys->i_title_offset;
394                 return VLC_SUCCESS;
395             }
396             *pi64 = 0;
397             return VLC_EGENERIC;
398
399         case DEMUX_GET_LENGTH:
400             pi64 = (int64_t*)va_arg( args, int64_t * );
401             if( p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles )
402             {
403                 *pi64 = (int64_t)dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 );
404                 return VLC_SUCCESS;
405             }
406             *pi64 = 0;
407             return VLC_EGENERIC;
408
409         /* Special for access_demux */
410         case DEMUX_CAN_PAUSE:
411         case DEMUX_CAN_CONTROL_PACE:
412             /* TODO */
413             pb = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
414             *pb = VLC_TRUE;
415             return VLC_SUCCESS;
416
417         case DEMUX_SET_PAUSE_STATE:
418             return VLC_SUCCESS;
419
420         case DEMUX_GET_TITLE_INFO:
421             ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
422             pi_int    = (int*)va_arg( args, int* );
423             *((int*)va_arg( args, int* )) = 1; /* Title offset */
424             *((int*)va_arg( args, int* )) = 1; /* Chapter offset */
425
426             /* Duplicate title infos */
427             *pi_int = p_sys->i_titles;
428             *ppp_title = malloc( sizeof(input_title_t **) * p_sys->i_titles );
429             for( i = 0; i < p_sys->i_titles; i++ )
430             {
431                 (*ppp_title)[i] = vlc_input_title_Duplicate(p_sys->titles[i]);
432             }
433             return VLC_SUCCESS;
434
435         case DEMUX_SET_TITLE:
436             i = (int)va_arg( args, int );
437             if( DvdReadSetArea( p_demux, i, 0, -1 ) != VLC_SUCCESS )
438             {
439                 msg_Warn( p_demux, "cannot set title/chapter" );
440                 return VLC_EGENERIC;
441             }
442             p_demux->info.i_update |=
443                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
444             p_demux->info.i_title = i;
445             p_demux->info.i_seekpoint = 0;
446             return VLC_SUCCESS;
447
448         case DEMUX_SET_SEEKPOINT:
449             i = (int)va_arg( args, int );
450             if( DvdReadSetArea( p_demux, -1, i, -1 ) != VLC_SUCCESS )
451             {
452                 msg_Warn( p_demux, "cannot set title/chapter" );
453                 return VLC_EGENERIC;
454             }
455             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
456             p_demux->info.i_seekpoint = i;
457             return VLC_SUCCESS;
458
459         case DEMUX_GET_PTS_DELAY:
460             pi64 = (int64_t*)va_arg( args, int64_t * );
461             *pi64 = (int64_t)var_GetInteger( p_demux, "dvdread-caching" )*1000;
462             return VLC_SUCCESS;
463
464         /* TODO implement others */
465         default:
466             return VLC_EGENERIC;
467     }
468 }
469
470 /*****************************************************************************
471  * Demux:
472  *****************************************************************************/
473 static int Demux( demux_t *p_demux )
474 {
475     demux_sys_t *p_sys = p_demux->p_sys;
476
477     uint8_t p_buffer[DVD_VIDEO_LB_LEN * DVD_BLOCK_READ_ONCE];
478     int i_blocks_once, i_read;
479     int i;
480
481     /*
482      * Playback by cell in this pgc, starting at the cell for our chapter.
483      */
484
485     /*
486      * Check end of pack, and select the following one
487      */
488     if( !p_sys->i_pack_len )
489     {
490         /* Read NAV packet */
491         if( DVDReadBlocks( p_sys->p_title, p_sys->i_next_vobu,
492                            1, p_buffer ) != 1 )
493         {
494             msg_Err( p_demux, "read failed for block %d", p_sys->i_next_vobu );
495             return -1;
496         }
497
498         /* Basic check to be sure we don't have a empty title
499          * go to next title if so */
500         //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
501
502         /* Parse the contained dsi packet */
503         DvdReadHandleDSI( p_demux, p_buffer );
504
505         /* End of title */
506         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
507         {
508             if( p_sys->i_title + 1 >= p_sys->i_titles )
509             {
510                 return 0; /* EOF */
511             }
512
513             DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
514         }
515
516         if( p_sys->i_pack_len >= 1024 )
517         {
518             msg_Err( p_demux, "i_pack_len >= 1024 (%i). "
519                      "This shouldn't happen!", p_sys->i_pack_len );
520             return 0; /* EOF */
521         }
522
523         /* FIXME: Ugly kludge: we send the pack block to the input for it
524          * sometimes has a zero scr and restart the sync */
525         p_sys->i_cur_block++;
526         p_sys->i_title_offset++;
527
528         DemuxBlock( p_demux, p_buffer, DVD_VIDEO_LB_LEN );
529     }
530
531     if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
532     {
533         if( p_sys->i_title + 1 >= p_sys->i_titles )
534         {
535             return 0; /* EOF */
536         }
537
538         DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
539     }
540
541     /*
542      * Read actual data
543      */
544     i_blocks_once = __MIN( p_sys->i_pack_len, DVD_BLOCK_READ_ONCE );
545     p_sys->i_pack_len -= i_blocks_once;
546
547     /* Reads from DVD */
548     i_read = DVDReadBlocks( p_sys->p_title, p_sys->i_cur_block,
549                             i_blocks_once, p_buffer );
550     if( i_read != i_blocks_once )
551     {
552         msg_Err( p_demux, "read failed for %d/%d blocks at 0x%02x",
553                  i_read, i_blocks_once, p_sys->i_cur_block );
554         return -1;
555     }
556
557     p_sys->i_cur_block += i_read;
558     p_sys->i_title_offset += i_read;
559
560 #if 0
561     msg_Dbg( p_demux, "i_blocks: %d len: %d current: 0x%02x",
562              i_read, p_sys->i_pack_len, p_sys->i_cur_block );
563 #endif
564
565     for( i = 0; i < i_read; i++ )
566     {
567         DemuxBlock( p_demux, p_buffer + i * DVD_VIDEO_LB_LEN,
568                     DVD_VIDEO_LB_LEN );
569     }
570
571 #undef p_pgc
572
573     return 1;
574 }
575
576 /*****************************************************************************
577  * DemuxBlock: demux a given block
578  *****************************************************************************/
579 static int DemuxBlock( demux_t *p_demux, uint8_t *pkt, int i_pkt )
580 {
581     demux_sys_t *p_sys = p_demux->p_sys;
582     uint8_t     *p = pkt;
583
584     while( p < &pkt[i_pkt] )
585     {
586         int i_size = ps_pkt_size( p, &pkt[i_pkt] - p );
587         block_t *p_pkt;
588         if( i_size <= 0 )
589         {
590             break;
591         }
592
593         /* Create a block */
594         p_pkt = block_New( p_demux, i_size );
595         memcpy( p_pkt->p_buffer, p, i_size);
596
597         /* Parse it and send it */
598         switch( 0x100 | p[3] )
599         {
600         case 0x1b9:
601         case 0x1bb:
602         case 0x1bc:
603
604 #ifdef DVDREAD_DEBUG
605             if( p[3] == 0xbc )
606             {
607                 msg_Warn( p_demux, "received a PSM packet" );
608             }
609             else if( p[3] == 0xbb )
610             {
611                 msg_Warn( p_demux, "received a SYSTEM packet" );
612             }
613 #endif
614             block_Release( p_pkt );
615             break;
616
617         case 0x1ba:
618         {
619             int64_t i_scr;
620             int i_mux_rate;
621             if( !ps_pkt_parse_pack( p_pkt, &i_scr, &i_mux_rate ) )
622             {
623                 es_out_Control( p_demux->out, ES_OUT_SET_PCR, i_scr );
624                 if( i_mux_rate > 0 ) p_sys->i_mux_rate = i_mux_rate;
625             }
626             block_Release( p_pkt );
627             break;
628         }
629         default:
630         {
631             int i_id = ps_pkt_id( p_pkt );
632             if( i_id >= 0xc0 )
633             {
634                 ps_track_t *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
635
636                 if( !tk->b_seen )
637                 {
638                     ESNew( p_demux, i_id, 0 );
639                 }
640                 if( tk->b_seen && tk->es &&
641                     !ps_pkt_parse_pes( p_pkt, tk->i_skip ) )
642                 {
643                     es_out_Send( p_demux->out, tk->es, p_pkt );
644                 }
645                 else
646                 {
647                     block_Release( p_pkt );
648                 }
649             }
650             else
651             {
652                 block_Release( p_pkt );
653             }
654             break;
655         }
656         }
657
658         p += i_size;
659     }
660
661     return VLC_SUCCESS;
662 }
663
664 /*****************************************************************************
665  * ESNew: register a new elementary stream
666  *****************************************************************************/
667 static void ESNew( demux_t *p_demux, int i_id, int i_lang )
668 {
669     demux_sys_t *p_sys = p_demux->p_sys;
670     ps_track_t  *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
671     char psz_language[3];
672
673     if( tk->b_seen ) return;
674
675     if( ps_track_fill( tk, 0, i_id ) )
676     {
677         msg_Warn( p_demux, "unknown codec for id=0x%x", i_id );
678         return;
679     }
680
681     psz_language[0] = psz_language[1] = psz_language[2] = 0;
682     if( i_lang && i_lang != 0xffff )
683     {
684         psz_language[0] = (i_lang >> 8)&0xff;
685         psz_language[1] = (i_lang     )&0xff;
686     }
687
688     /* Add a new ES */
689     if( tk->fmt.i_cat == VIDEO_ES )
690     {
691         if( p_sys->i_aspect >= 0 )
692         {
693             tk->fmt.video.i_aspect = p_sys->i_aspect;
694         }
695     }
696     else if( tk->fmt.i_cat == AUDIO_ES )
697     {
698         int i_audio = -1;
699         /* find the audio number PLEASE find another way */
700         if( (i_id&0xbdf8) == 0xbd88 )       /* dts */
701         {
702             i_audio = i_id&0x07;
703         }
704         else if( (i_id&0xbdf0) == 0xbd80 )  /* a52 */
705         {
706             i_audio = i_id&0xf;
707         }
708         else if( (i_id&0xbdf0) == 0xbda0 )  /* lpcm */
709         {
710             i_audio = i_id&0x1f;
711         }
712         else if( ( i_id&0xe0 ) == 0xc0 )    /* mpga */
713         {
714             i_audio = i_id&0x1f;
715         }
716
717         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
718     }
719     else if( tk->fmt.i_cat == SPU_ES )
720     {
721         /* Palette */
722         tk->fmt.subs.spu.palette[0] = 0xBeef;
723         memcpy( &tk->fmt.subs.spu.palette[1], p_sys->clut,
724                 16 * sizeof( uint32_t ) );
725
726         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
727     }
728
729     tk->es = es_out_Add( p_demux->out, &tk->fmt );
730     tk->b_seen = VLC_TRUE;
731 }
732
733 /*****************************************************************************
734  * DvdReadSetArea: initialize input data for title x, chapter y.
735  * It should be called for each user navigation request.
736  *****************************************************************************
737  * Take care that i_title and i_chapter start from 0.
738  *****************************************************************************/
739 static int DvdReadSetArea( demux_t *p_demux, int i_title, int i_chapter,
740                            int i_angle )
741 {
742     demux_sys_t *p_sys = p_demux->p_sys;
743     int pgc_id = 0, pgn = 0;
744     int i;
745
746 #define p_pgc p_sys->p_cur_pgc
747 #define p_vmg p_sys->p_vmg_file
748 #define p_vts p_sys->p_vts_file
749
750     if( i_title >= 0 && i_title < p_sys->i_titles &&
751         i_title != p_sys->i_title )
752     {
753         int i_start_cell, i_end_cell;
754
755         if( p_sys->p_title != NULL ) DVDCloseFile( p_sys->p_title );
756         if( p_vts != NULL ) ifoClose( p_vts );
757         p_sys->i_title = i_title;
758
759         /*
760          *  We have to load all title information
761          */
762         msg_Dbg( p_demux, "open VTS %d, for title %d",
763                  p_vmg->tt_srpt->title[i_title].title_set_nr, i_title + 1 );
764
765         /* Ifo vts */
766         if( !( p_vts = ifoOpen( p_sys->p_dvdread,
767                p_vmg->tt_srpt->title[i_title].title_set_nr ) ) )
768         {
769             msg_Err( p_demux, "fatal error in vts ifo" );
770             return VLC_EGENERIC;
771         }
772
773         /* Title position inside the selected vts */
774         p_sys->i_ttn = p_vmg->tt_srpt->title[i_title].vts_ttn;
775
776         /* Find title start/end */
777         pgc_id = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgcn;
778         pgn = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgn;
779         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
780
781         p_sys->i_title_start_cell =
782             i_start_cell = p_pgc->program_map[pgn - 1] - 1;
783         p_sys->i_title_start_block =
784             p_pgc->cell_playback[i_start_cell].first_sector;
785
786         p_sys->i_title_end_cell =
787             i_end_cell = p_pgc->nr_of_cells - 1;
788         p_sys->i_title_end_block =
789             p_pgc->cell_playback[i_end_cell].last_sector;
790
791         p_sys->i_title_offset = 0;
792
793         p_sys->i_title_blocks = 0;
794         for( i = i_start_cell; i <= i_end_cell; i++ )
795         {
796             p_sys->i_title_blocks += p_pgc->cell_playback[i].last_sector -
797                 p_pgc->cell_playback[i].first_sector + 1;
798         }
799
800         msg_Dbg( p_demux, "title %d vts_title %d pgc %d pgn %d "
801                  "start %d end %d blocks: %d",
802                  i_title + 1, p_sys->i_ttn, pgc_id, pgn,
803                  p_sys->i_title_start_block, p_sys->i_title_end_block,
804                  p_sys->i_title_blocks );
805
806         /*
807          * Set properties for current chapter
808          */
809         p_sys->i_chapter = 0;
810         p_sys->i_chapters =
811             p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].nr_of_ptts;
812
813         pgc_id = p_vts->vts_ptt_srpt->title[
814                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgcn;
815         pgn = p_vts->vts_ptt_srpt->title[
816                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgn;
817
818         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
819         p_sys->i_pack_len = 0;
820         p_sys->i_next_cell =
821             p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
822         DvdReadFindCell( p_demux );
823
824         p_sys->i_next_vobu = p_sys->i_cur_block =
825             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
826
827         /*
828          * Angle management
829          */
830         p_sys->i_angles = p_vmg->tt_srpt->title[i_title].nr_of_angles;
831         if( p_sys->i_angle > p_sys->i_angles ) p_sys->i_angle = 1;
832
833         /*
834          * We've got enough info, time to open the title set data.
835          */
836         if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
837             p_vmg->tt_srpt->title[i_title].title_set_nr,
838             DVD_READ_TITLE_VOBS ) ) )
839         {
840             msg_Err( p_demux, "cannot open title (VTS_%02d_1.VOB)",
841                      p_vmg->tt_srpt->title[i_title].title_set_nr );
842             return VLC_EGENERIC;
843         }
844
845         //IfoPrintTitle( p_demux );
846
847         /*
848          * Destroy obsolete ES by reinitializing program 0
849          * and find all ES in title with ifo data
850          */
851         es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
852
853         for( i = 0; i < PS_TK_COUNT; i++ )
854         {
855             ps_track_t *tk = &p_sys->tk[i];
856             if( tk->b_seen )
857             {
858                 es_format_Clean( &tk->fmt );
859                 if( tk->es ) es_out_Del( p_demux->out, tk->es );
860             }
861             tk->b_seen = VLC_FALSE;
862         }
863
864         if( p_demux->info.i_title != i_title )
865         {
866             p_demux->info.i_update |=
867                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
868             p_demux->info.i_title = i_title;
869             p_demux->info.i_seekpoint = 0;
870         }
871
872         /* TODO: re-add angles */
873
874
875         ESNew( p_demux, 0xe0, 0 ); /* Video, FIXME ? */
876         p_sys->i_aspect = p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio;
877
878 #define audio_control \
879     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
880
881         /* Audio ES, in the order they appear in the .ifo */
882         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams; i++ )
883         {
884             int i_position = 0;
885             uint16_t i_id;
886
887             //IfoPrintAudio( p_demux, i );
888
889             /* Audio channel is active if first byte is 0x80 */
890             if( audio_control & 0x8000 )
891             {
892                 i_position = ( audio_control & 0x7F00 ) >> 8;
893
894                 msg_Dbg( p_demux, "audio position  %d", i_position );
895                 switch( p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format )
896                 {
897                 case 0x00: /* A52 */
898                     i_id = (0x80 + i_position) | 0xbd00;
899                     break;
900                 case 0x02:
901                 case 0x03: /* MPEG audio */
902                     i_id = 0xc000 + i_position;
903                     break;
904                 case 0x04: /* LPCM */
905                     i_id = (0xa0 + i_position) | 0xbd00;
906                     break;
907                 case 0x06: /* DTS */
908                     i_id = (0x88 + i_position) | 0xbd00;
909                     break;
910                 default:
911                     i_id = 0;
912                     msg_Err( p_demux, "unknown audio type %.2x",
913                         p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format );
914                 }
915
916                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
917                        vts_audio_attr[i - 1].lang_code );
918             }
919         }
920 #undef audio_control
921
922 #define spu_palette \
923     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->palette
924
925         memcpy( p_sys->clut, spu_palette, 16 * sizeof( uint32_t ) );
926
927 #define spu_control \
928     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
929
930         /* Sub Picture ES */
931         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
932         {
933             int i_position = 0;
934             uint16_t i_id;
935
936             //IfoPrintSpu( p_sys, i );
937             msg_Dbg( p_demux, "spu %d 0x%02x", i, spu_control );
938
939             if( spu_control & 0x80000000 )
940             {
941                 /*  there are several streams for one spu */
942                 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
943                 {
944                     /* 16:9 */
945                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
946                     {
947                     case 1: /* letterbox */
948                         i_position = spu_control & 0xff;
949                         break;
950                     case 2: /* pan&scan */
951                         i_position = ( spu_control >> 8 ) & 0xff;
952                         break;
953                     default: /* widescreen */
954                         i_position = ( spu_control >> 16 ) & 0xff;
955                         break;
956                     }
957                 }
958                 else
959                 {
960                     /* 4:3 */
961                     i_position = ( spu_control >> 24 ) & 0x7F;
962                 }
963
964                 i_id = (0x20 + i_position) | 0xbd00;
965
966                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
967                        vts_subp_attr[i - 1].lang_code );
968             }
969         }
970 #undef spu_control
971
972     }
973     else if( i_title != -1 && i_title != p_sys->i_title )
974
975     {
976         return VLC_EGENERIC; /* Couldn't set title */
977     }
978
979     /*
980      * Chapter selection
981      */
982
983     if( i_chapter >= 0 && i_chapter < p_sys->i_chapters )
984     {
985         pgc_id = p_vts->vts_ptt_srpt->title[
986                      p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
987         pgn = p_vts->vts_ptt_srpt->title[
988                   p_sys->i_ttn - 1].ptt[i_chapter].pgn;
989
990         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
991
992         p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
993         p_sys->i_chapter = i_chapter;
994         DvdReadFindCell( p_demux );
995
996         p_sys->i_title_offset = 0;
997         for( i = p_sys->i_title_start_cell; i < p_sys->i_cur_cell; i++ )
998         {
999             p_sys->i_title_offset += p_pgc->cell_playback[i].last_sector -
1000                 p_pgc->cell_playback[i].first_sector + 1;
1001         }
1002
1003         p_sys->i_pack_len = 0;
1004         p_sys->i_next_vobu = p_sys->i_cur_block =
1005             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1006
1007         if( p_demux->info.i_seekpoint != i_chapter )
1008         {
1009             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1010             p_demux->info.i_seekpoint = i_chapter;
1011         }
1012     }
1013     else if( i_chapter != -1 )
1014
1015     {
1016         return VLC_EGENERIC; /* Couldn't set chapter */
1017     }
1018
1019 #undef p_pgc
1020 #undef p_vts
1021 #undef p_vmg
1022
1023     return VLC_SUCCESS;
1024 }
1025
1026 /*****************************************************************************
1027  * DvdReadSeek : Goes to a given position on the stream.
1028  *****************************************************************************
1029  * This one is used by the input and translate chronological position from
1030  * input to logical position on the device.
1031  *****************************************************************************/
1032 static void DvdReadSeek( demux_t *p_demux, int i_block_offset )
1033 {
1034     demux_sys_t *p_sys = p_demux->p_sys;
1035     int i_chapter = 0;
1036     int i_cell = 0;
1037     int i_vobu = 0;
1038     int i_sub_cell = 0;
1039     int i_block;
1040
1041 #define p_pgc p_sys->p_cur_pgc
1042 #define p_vts p_sys->p_vts_file
1043
1044     /* Find cell */
1045     i_block = i_block_offset;
1046     for( i_cell = p_sys->i_title_start_cell;
1047          i_cell <= p_sys->i_title_end_cell; i_cell++ )
1048     {
1049         if( i_block < (int)p_pgc->cell_playback[i_cell].last_sector -
1050             (int)p_pgc->cell_playback[i_cell].first_sector + 1 ) break;
1051
1052         i_block -= (p_pgc->cell_playback[i_cell].last_sector -
1053             p_pgc->cell_playback[i_cell].first_sector + 1);
1054     }
1055     if( i_cell > p_sys->i_title_end_cell )
1056     {
1057         msg_Err( p_demux, "couldn't find cell for block %i", i_block_offset );
1058         return;
1059     }
1060     i_block += p_pgc->cell_playback[i_cell].first_sector;
1061     p_sys->i_title_offset = i_block_offset;
1062
1063     /* Find chapter */
1064     for( i_chapter = 0; i_chapter < p_sys->i_chapters; i_chapter++ )
1065     {
1066         int pgc_id, pgn, i_tmp;
1067
1068         pgc_id = p_vts->vts_ptt_srpt->title[
1069                     p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
1070         pgn = p_vts->vts_ptt_srpt->title[
1071                     p_sys->i_ttn - 1].ptt[i_chapter].pgn;
1072
1073         i_tmp = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc->program_map[pgn-1];
1074
1075         if( i_tmp > i_cell ) break;
1076     }
1077
1078     if( i_chapter < p_sys->i_chapters &&
1079         p_demux->info.i_seekpoint != i_chapter )
1080     {
1081         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1082         p_demux->info.i_seekpoint = i_chapter;
1083     }
1084
1085     /* Find vobu */
1086     while( (int)p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu] <= i_block )
1087     {
1088         i_vobu++;
1089     }
1090
1091     /* Find sub_cell */
1092     while( p_vts->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1093            p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1094     {
1095         i_sub_cell++;
1096     }
1097
1098 #if 1
1099     msg_Dbg( p_demux, "cell %d i_sub_cell %d chapter %d vobu %d "
1100              "cell_sector %d vobu_sector %d sub_cell_sector %d",
1101              i_cell, i_sub_cell, i_chapter, i_vobu,
1102              p_sys->p_cur_pgc->cell_playback[i_cell].first_sector,
1103              p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu],
1104              p_vts->vts_c_adt->cell_adr_table[i_sub_cell - 1].start_sector);
1105 #endif
1106
1107     p_sys->i_cur_block = i_block;
1108     p_sys->i_next_vobu = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu];
1109     p_sys->i_pack_len = p_sys->i_next_vobu - i_block;
1110     p_sys->i_cur_cell = i_cell;
1111     p_sys->i_chapter = i_chapter;
1112     DvdReadFindCell( p_demux );
1113
1114 #undef p_vts
1115 #undef p_pgc
1116
1117     return;
1118 }
1119
1120 /*****************************************************************************
1121  * DvdReadHandleDSI
1122  *****************************************************************************/
1123 static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
1124 {
1125     demux_sys_t *p_sys = p_demux->p_sys;
1126
1127     navRead_DSI( &p_sys->dsi_pack, &p_data[DSI_START_BYTE] );
1128
1129     /*
1130      * Determine where we go next.  These values are the ones we mostly
1131      * care about.
1132      */
1133     p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
1134     p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
1135
1136     /*
1137      * Store the timecodes so we can get the current time
1138      */
1139     p_sys->i_title_cur_time = (mtime_t) (p_sys->dsi_pack.dsi_gi.nv_pck_scr / 90 * 1000);
1140     p_sys->i_cell_cur_time = (mtime_t) dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 );
1141
1142     /*
1143      * If we're not at the end of this cell, we can determine the next
1144      * VOBU to display using the VOBU_SRI information section of the
1145      * DSI.  Using this value correctly follows the current angle,
1146      * avoiding the doubled scenes in The Matrix, and makes our life
1147      * really happy.
1148      */
1149
1150     p_sys->i_next_vobu = p_sys->i_cur_block +
1151         ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1152
1153     if( p_sys->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL
1154         && p_sys->i_angle > 1 )
1155     {
1156         switch( ( p_sys->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1157         {
1158         case 0x4:
1159             /* Interleaved unit with no angle */
1160             if( p_sys->dsi_pack.sml_pbi.ilvu_sa != 0 )
1161             {
1162                 p_sys->i_next_vobu = p_sys->i_cur_block +
1163                     p_sys->dsi_pack.sml_pbi.ilvu_sa;
1164                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1165             }
1166             else
1167             {
1168                 p_sys->i_next_vobu = p_sys->i_cur_block +
1169                     p_sys->dsi_pack.dsi_gi.vobu_ea + 1;
1170             }
1171             break;
1172         case 0x5:
1173             /* vobu is end of ilvu */
1174             if( p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address )
1175             {
1176                 p_sys->i_next_vobu = p_sys->i_cur_block +
1177                     p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address;
1178                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1179
1180                 break;
1181             }
1182         case 0x6:
1183             /* vobu is beginning of ilvu */
1184         case 0x9:
1185             /* next scr is 0 */
1186         case 0xa:
1187             /* entering interleaved section */
1188         case 0x8:
1189             /* non interleaved cells in interleaved section */
1190         default:
1191             p_sys->i_next_vobu = p_sys->i_cur_block +
1192                 ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1193             break;
1194         }
1195     }
1196     else if( p_sys->dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
1197     {
1198         p_sys->i_cur_cell = p_sys->i_next_cell;
1199
1200         /* End of title */
1201         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells ) return;
1202
1203         DvdReadFindCell( p_demux );
1204
1205         p_sys->i_next_vobu =
1206             p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1207
1208         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 );
1209     }
1210
1211
1212 #if 0
1213     msg_Dbg( p_demux, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d c_time %lld",
1214              p_sys->dsi_pack.dsi_gi.nv_pck_scr,
1215              p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
1216              p_sys->dsi_pack.dsi_gi.vobu_ea,
1217              p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
1218              p_sys->dsi_pack.dsi_gi.vobu_c_idn,
1219              dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 ) );
1220
1221     msg_Dbg( p_demux, "cell duration: %lld", 
1222              (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 ) );
1223
1224     msg_Dbg( p_demux, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1225              p_sys->dsi_pack.sml_pbi.category,
1226              p_sys->dsi_pack.sml_pbi.ilvu_ea,
1227              p_sys->dsi_pack.sml_pbi.ilvu_sa,
1228              p_sys->dsi_pack.sml_pbi.size );
1229
1230     msg_Dbg( p_demux, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1231              p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1232              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
1233              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);
1234 #endif
1235 }
1236
1237 /*****************************************************************************
1238  * DvdReadFindCell
1239  *****************************************************************************/
1240 static void DvdReadFindCell( demux_t *p_demux )
1241 {
1242     demux_sys_t *p_sys = p_demux->p_sys;
1243
1244     pgc_t *p_pgc;
1245     int   pgc_id, pgn;
1246     int   i = 0;
1247
1248 #define cell p_sys->p_cur_pgc->cell_playback
1249
1250     if( cell[p_sys->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1251     {
1252         p_sys->i_cur_cell += p_sys->i_angle - 1;
1253
1254         while( cell[p_sys->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1255         {
1256             i++;
1257         }
1258         p_sys->i_next_cell = p_sys->i_cur_cell + i + 1;
1259     }
1260     else
1261     {
1262         p_sys->i_next_cell = p_sys->i_cur_cell + 1;
1263     }
1264
1265 #undef cell
1266
1267     if( p_sys->i_chapter + 1 >= p_sys->i_chapters ) return;
1268
1269     pgc_id = p_sys->p_vts_file->vts_ptt_srpt->title[
1270                 p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgcn;
1271     pgn = p_sys->p_vts_file->vts_ptt_srpt->title[
1272               p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgn;
1273     p_pgc = p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
1274
1275     if( p_sys->i_cur_cell >= p_pgc->program_map[pgn - 1] - 1 )
1276     {
1277         p_sys->i_chapter++;
1278
1279         if( p_sys->i_chapter < p_sys->i_chapters &&
1280             p_demux->info.i_seekpoint != p_sys->i_chapter )
1281         {
1282             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1283             p_demux->info.i_seekpoint = p_sys->i_chapter;
1284         }
1285     }
1286 }
1287
1288 /*****************************************************************************
1289  * DemuxTitles: get the titles/chapters structure
1290  *****************************************************************************/
1291 static void DemuxTitles( demux_t *p_demux, int *pi_angle )
1292 {
1293     demux_sys_t *p_sys = p_demux->p_sys;
1294     input_title_t *t;
1295     seekpoint_t *s;
1296     int32_t i_titles;
1297     int i;
1298
1299     /* Find out number of titles/chapters */
1300 #define tt_srpt p_sys->p_vmg_file->tt_srpt
1301
1302     i_titles = tt_srpt->nr_of_srpts;
1303     msg_Dbg( p_demux, "number of titles: %d", i_titles );
1304
1305     for( i = 0; i < i_titles; i++ )
1306     {
1307         int32_t i_chapters = 0;
1308         int j;
1309
1310         i_chapters = tt_srpt->title[i].nr_of_ptts;
1311         msg_Dbg( p_demux, "title %d has %d chapters", i, i_chapters );
1312
1313         t = vlc_input_title_New();
1314
1315         for( j = 0; j < __MAX( i_chapters, 1 ); j++ )
1316         {
1317             s = vlc_seekpoint_New();
1318             TAB_APPEND( t->i_seekpoint, t->seekpoint, s );
1319         }
1320
1321         TAB_APPEND( p_sys->i_titles, p_sys->titles, t );
1322     }
1323
1324 #undef tt_srpt
1325 }