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