* modules/access/dvdnav.c,dvdread.c: don't crash if the DVD can't be decrypted/read.
[vlc.git] / modules / access / dvdread.c
1 /*****************************************************************************
2  * dvdread.c : DvdRead input module for vlc
3  *****************************************************************************
4  * Copyright (C) 2001-2004 VideoLAN
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., 59 Temple Place - Suite 330, Boston, MA  02111, 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     "Allows you to modify the default caching value for DVDread streams. " \
64     "This value should be set in millisecond units." )
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     /* Current title start/end blocks */
138     int i_title_start_block;
139     int i_title_end_block;
140     int i_title_blocks;
141     int i_title_offset;
142
143     int i_title_start_cell;
144     int i_title_end_cell;
145     int i_cur_cell;
146     int i_next_cell;
147
148     /* Track */
149     ps_track_t    tk[PS_TK_COUNT];
150     int           i_mux_rate;
151
152     int           i_titles;
153     input_title_t **titles;
154
155     /* Video */
156     int i_aspect;
157
158     /* SPU */
159     uint32_t clut[16];
160 };
161
162 static int Control   ( demux_t *, int, va_list );
163 static int Demux     ( demux_t * );
164 static int DemuxBlock( demux_t *, uint8_t *, int );
165
166 static void DemuxTitles( demux_t *, int * );
167 static void ESNew( demux_t *, int, int );
168
169 static int  DvdReadSetArea  ( demux_t *, int, int, int );
170 static void DvdReadSeek     ( demux_t *, int );
171 static void DvdReadHandleDSI( demux_t *, uint8_t * );
172 static void DvdReadFindCell ( demux_t * );
173
174 /*****************************************************************************
175  * Open:
176  *****************************************************************************/
177 static int Open( vlc_object_t *p_this )
178 {
179     demux_t      *p_demux = (demux_t*)p_this;
180     demux_sys_t  *p_sys;
181     char         *psz_name;
182     char         *psz_dvdcss_env;
183     dvd_reader_t *p_dvdread;
184     ifo_handle_t *p_vmg_file;
185     vlc_value_t  val;
186
187     if( !p_demux->psz_path || !*p_demux->psz_path )
188     {
189         /* Only when selected */
190         if( !p_this->b_force ) return VLC_EGENERIC;
191
192         psz_name = var_CreateGetString( p_this, "dvd" );
193         if( !psz_name || !*psz_name )
194         {
195             if( psz_name ) free( psz_name );
196             return VLC_EGENERIC;
197         }
198     }
199     else psz_name = strdup( p_demux->psz_path );
200
201 #ifdef WIN32
202     if( psz_name[0] && psz_name[1] == ':' &&
203         psz_name[2] == '\\' && psz_name[3] == '\0' ) psz_name[2] = '\0';
204 #endif
205
206     /* Override environment variable DVDCSS_METHOD with config option
207      * (FIXME: this creates a small memory leak) */
208     psz_dvdcss_env = config_GetPsz( p_demux, "dvdread-css-method" );
209     if( psz_dvdcss_env && *psz_dvdcss_env )
210     {
211         char *psz_env;
212
213         psz_env = malloc( strlen("DVDCSS_METHOD=") +
214                           strlen( psz_dvdcss_env ) + 1 );
215         if( !psz_env )
216         {
217             free( psz_dvdcss_env );
218             return VLC_ENOMEM;
219         }
220
221         sprintf( psz_env, "%s%s", "DVDCSS_METHOD=", psz_dvdcss_env );
222
223         putenv( psz_env );
224     }
225     if( psz_dvdcss_env ) free( psz_dvdcss_env );
226
227     /* Open dvdread */
228     if( !(p_dvdread = DVDOpen( psz_name )) )
229     {
230         msg_Err( p_demux, "DVDRead cannot open source: %s", psz_name );
231         free( psz_name );
232         return VLC_EGENERIC;
233     }
234     free( psz_name );
235
236     /* Ifo allocation & initialisation */
237     if( !( p_vmg_file = ifoOpen( p_dvdread, 0 ) ) )
238     {
239         msg_Warn( p_demux, "cannot open VMG info" );
240         return VLC_EGENERIC;
241     }
242     msg_Dbg( p_demux, "VMG opened" );
243
244     /* Fill p_demux field */
245     p_demux->pf_demux = Demux;
246     p_demux->pf_control = Control;
247     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
248     memset( p_sys, 0, sizeof( demux_sys_t ) );
249
250     ps_track_init( p_sys->tk );
251     p_sys->i_aspect = -1;
252     p_sys->i_mux_rate = 0;
253
254     p_sys->p_dvdread = p_dvdread;
255     p_sys->p_vmg_file = p_vmg_file;
256     p_sys->p_title = NULL;
257     p_sys->p_vts_file = NULL;
258
259     p_sys->i_title = p_sys->i_chapter = -1;
260
261     var_Create( p_demux, "dvdread-angle", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
262     var_Get( p_demux, "dvdread-angle", &val );
263     p_sys->i_angle = val.i_int > 0 ? val.i_int : 1;
264
265     DemuxTitles( p_demux, &p_sys->i_angle );
266     if( DvdReadSetArea( p_demux, 0, 0, p_sys->i_angle ) != VLC_SUCCESS )
267     {
268         Close( p_this );
269         msg_Err( p_demux, "DvdReadSetArea(0,0,%i) failed (can't decrypt DVD?)",
270                  p_sys->i_angle );
271         return VLC_EGENERIC;
272     }
273
274     /* Update default_pts to a suitable value for dvdread access */
275     var_Create( p_demux, "dvdread-caching",
276                 VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
277
278     return VLC_SUCCESS;
279 }
280
281 /*****************************************************************************
282  * Close:
283  *****************************************************************************/
284 static void Close( vlc_object_t *p_this )
285 {
286     demux_t     *p_demux = (demux_t*)p_this;
287     demux_sys_t *p_sys = p_demux->p_sys;
288     int i;
289
290     for( i = 0; i < PS_TK_COUNT; i++ )
291     {
292         ps_track_t *tk = &p_sys->tk[i];
293         if( tk->b_seen )
294         {
295             es_format_Clean( &tk->fmt );
296             if( tk->es ) es_out_Del( p_demux->out, tk->es );
297         }
298     }
299
300     /* Close libdvdread */
301     if( p_sys->p_title ) DVDCloseFile( p_sys->p_title );
302     if( p_sys->p_vts_file ) ifoClose( p_sys->p_vts_file );
303     if( p_sys->p_vmg_file ) ifoClose( p_sys->p_vmg_file );
304     DVDClose( p_sys->p_dvdread );
305
306     free( p_sys );
307 }
308
309 static int64_t dvdtime_to_time( dvd_time_t *dtime, uint8_t still_time )
310 {
311 /* Macro to convert Binary Coded Decimal to Decimal */
312 #define BCD2D(__x__) (((__x__ & 0xf0) >> 4) * 10 + (__x__ & 0x0f))
313
314     double f_fps, f_ms;
315     int64_t i_micro_second = 0;
316
317     if (still_time == 0 || still_time == 0xFF)
318     {
319         i_micro_second += (int64_t)(BCD2D(dtime->hour)) * 60 * 60 * 1000000;
320         i_micro_second += (int64_t)(BCD2D(dtime->minute)) * 60 * 1000000;
321         i_micro_second += (int64_t)(BCD2D(dtime->second)) * 1000000;
322
323         switch((dtime->frame_u & 0xc0) >> 6) 
324         {
325         case 1:
326             f_fps = 25.0;
327             break;
328         case 3:
329             f_fps = 29.97;
330             break;
331         default:
332             f_fps = 2500.0;
333             break;
334         }
335         f_ms = BCD2D(dtime->frame_u&0x3f) * 1000.0 / f_fps;
336         i_micro_second += (int64_t)(f_ms * 1000.0);
337     }
338     else
339     {
340         i_micro_second = still_time;
341         i_micro_second = (int64_t)((double)i_micro_second * 1000000.0);
342     }
343     
344     return i_micro_second;
345 }
346
347 /*****************************************************************************
348  * Control:
349  *****************************************************************************/
350 static int Control( demux_t *p_demux, int i_query, va_list args )
351 {
352     demux_sys_t *p_sys = p_demux->p_sys;
353     double f, *pf;
354     vlc_bool_t *pb;
355     int64_t *pi64;
356     input_title_t ***ppp_title;
357     int *pi_int;
358     int i;
359
360     switch( i_query )
361     {
362         case DEMUX_GET_POSITION:
363         {
364             pf = (double*) va_arg( args, double* );
365
366             if( p_sys->i_title_blocks > 0 )
367                 *pf = (double)p_sys->i_title_offset / p_sys->i_title_blocks;
368             else
369                 *pf = 0.0;
370
371             return VLC_SUCCESS;
372         }
373         case DEMUX_SET_POSITION:
374         {
375             f = (double)va_arg( args, double );
376
377             DvdReadSeek( p_demux, f * p_sys->i_title_blocks );
378
379             return VLC_SUCCESS;
380         }
381         case DEMUX_GET_TIME:
382             pi64 = (int64_t*)va_arg( args, int64_t * );
383             if( p_sys->i_mux_rate > 0 )
384             {
385                 *pi64 = (int64_t)1000000 * DVD_VIDEO_LB_LEN *
386                         p_sys->i_title_offset / 50 / p_sys->i_mux_rate;
387                 return VLC_SUCCESS;
388             }
389             *pi64 = 0;
390             return VLC_EGENERIC;
391
392         case DEMUX_GET_LENGTH:
393             pi64 = (int64_t*)va_arg( args, int64_t * );
394             if (p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles)
395             {
396                 *pi64 = dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 );
397                 p_sys->i_mux_rate = p_sys->i_title_blocks * DVD_VIDEO_LB_LEN / (*pi64 / 20000);
398                 return VLC_SUCCESS;
399             }
400             *pi64 = 0;
401             return VLC_EGENERIC;
402
403         /* Special for access_demux */
404         case DEMUX_CAN_PAUSE:
405         case DEMUX_CAN_CONTROL_PACE:
406             /* TODO */
407             pb = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
408             *pb = VLC_TRUE;
409             return VLC_SUCCESS;
410
411         case DEMUX_SET_PAUSE_STATE:
412             return VLC_SUCCESS;
413
414         case DEMUX_GET_TITLE_INFO:
415             ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
416             pi_int    = (int*)va_arg( args, int* );
417             *((int*)va_arg( args, int* )) = 1; /* Title offset */
418             *((int*)va_arg( args, int* )) = 1; /* Chapter offset */
419
420             /* Duplicate title infos */
421             *pi_int = p_sys->i_titles;
422             *ppp_title = malloc( sizeof(input_title_t **) * p_sys->i_titles );
423             for( i = 0; i < p_sys->i_titles; i++ )
424             {
425                 (*ppp_title)[i] = vlc_input_title_Duplicate(p_sys->titles[i]);
426             }
427             return VLC_SUCCESS;
428
429         case DEMUX_SET_TITLE:
430             i = (int)va_arg( args, int );
431             if( DvdReadSetArea( p_demux, i, 0, -1 ) != VLC_SUCCESS )
432             {
433                 msg_Warn( p_demux, "cannot set title/chapter" );
434                 return VLC_EGENERIC;
435             }
436             p_demux->info.i_update |=
437                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
438             p_demux->info.i_title = i;
439             p_demux->info.i_seekpoint = 0;
440             return VLC_SUCCESS;
441
442         case DEMUX_SET_SEEKPOINT:
443             i = (int)va_arg( args, int );
444             if( DvdReadSetArea( p_demux, -1, i, -1 ) != VLC_SUCCESS )
445             {
446                 msg_Warn( p_demux, "cannot set title/chapter" );
447                 return VLC_EGENERIC;
448             }
449             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
450             p_demux->info.i_seekpoint = i;
451             return VLC_SUCCESS;
452
453         case DEMUX_GET_PTS_DELAY:
454             pi64 = (int64_t*)va_arg( args, int64_t * );
455             *pi64 = (int64_t)var_GetInteger( p_demux, "dvdread-caching" )*1000;
456             return VLC_SUCCESS;
457
458         /* TODO implement others */
459         default:
460             return VLC_EGENERIC;
461     }
462 }
463
464 /*****************************************************************************
465  * Demux:
466  *****************************************************************************/
467 static int Demux( demux_t *p_demux )
468 {
469     demux_sys_t *p_sys = p_demux->p_sys;
470
471     uint8_t p_buffer[DVD_VIDEO_LB_LEN * DVD_BLOCK_READ_ONCE];
472     int i_blocks_once, i_read;
473     int i;
474
475     /*
476      * Playback by cell in this pgc, starting at the cell for our chapter.
477      */
478
479     /*
480      * Check end of pack, and select the following one
481      */
482     if( !p_sys->i_pack_len )
483     {
484         /* Read NAV packet */
485         if( DVDReadBlocks( p_sys->p_title, p_sys->i_next_vobu,
486                            1, p_buffer ) != 1 )
487         {
488             msg_Err( p_demux, "read failed for block %d", p_sys->i_next_vobu );
489             return -1;
490         }
491
492         /* Basic check to be sure we don't have a empty title
493          * go to next title if so */
494         //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
495
496         /* Parse the contained dsi packet */
497         DvdReadHandleDSI( p_demux, p_buffer );
498
499         /* End of title */
500         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
501         {
502             if( p_sys->i_title + 1 >= p_sys->i_titles )
503             {
504                 return 0; /* EOF */
505             }
506
507             DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
508         }
509
510         if( p_sys->i_pack_len >= 1024 )
511         {
512             msg_Err( p_demux, "i_pack_len >= 1024 (%i). "
513                      "This shouldn't happen!", p_sys->i_pack_len );
514             return 0; /* EOF */
515         }
516
517         /* FIXME: Ugly kludge: we send the pack block to the input for it
518          * sometimes has a zero scr and restart the sync */
519         p_sys->i_cur_block++;
520         p_sys->i_title_offset++;
521
522         DemuxBlock( p_demux, p_buffer, DVD_VIDEO_LB_LEN );
523     }
524
525     if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
526     {
527         if( p_sys->i_title + 1 >= p_sys->i_titles )
528         {
529             return 0; /* EOF */
530         }
531
532         DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
533     }
534
535     /*
536      * Read actual data
537      */
538     i_blocks_once = __MIN( p_sys->i_pack_len, DVD_BLOCK_READ_ONCE );
539     p_sys->i_pack_len -= i_blocks_once;
540
541     /* Reads from DVD */
542     i_read = DVDReadBlocks( p_sys->p_title, p_sys->i_cur_block,
543                             i_blocks_once, p_buffer );
544     if( i_read != i_blocks_once )
545     {
546         msg_Err( p_demux, "read failed for %d/%d blocks at 0x%02x",
547                  i_read, i_blocks_once, p_sys->i_cur_block );
548         return -1;
549     }
550
551     p_sys->i_cur_block += i_read;
552     p_sys->i_title_offset += i_read;
553
554 #if 0
555     msg_Dbg( p_demux, "i_blocks: %d len: %d current: 0x%02x",
556              i_read, p_sys->i_pack_len, p_sys->i_cur_block );
557 #endif
558
559     for( i = 0; i < i_read; i++ )
560     {
561         DemuxBlock( p_demux, p_buffer + i * DVD_VIDEO_LB_LEN,
562                     DVD_VIDEO_LB_LEN );
563     }
564
565 #undef p_pgc
566
567     return 1;
568 }
569
570 /*****************************************************************************
571  * DemuxBlock: demux a given block
572  *****************************************************************************/
573 static int DemuxBlock( demux_t *p_demux, uint8_t *pkt, int i_pkt )
574 {
575     demux_sys_t *p_sys = p_demux->p_sys;
576     uint8_t     *p = pkt;
577
578     while( p < &pkt[i_pkt] )
579     {
580         int i_size = ps_pkt_size( p, &pkt[i_pkt] - p );
581         block_t *p_pkt;
582         if( i_size <= 0 )
583         {
584             break;
585         }
586
587         /* Create a block */
588         p_pkt = block_New( p_demux, i_size );
589         memcpy( p_pkt->p_buffer, p, i_size);
590
591         /* Parse it and send it */
592         switch( 0x100 | p[3] )
593         {
594         case 0x1b9:
595         case 0x1bb:
596         case 0x1bc:
597
598 #ifdef DVDREAD_DEBUG
599             if( p[3] == 0xbc )
600             {
601                 msg_Warn( p_demux, "received a PSM packet" );
602             }
603             else if( p[3] == 0xbb )
604             {
605                 msg_Warn( p_demux, "received a SYSTEM packet" );
606             }
607 #endif
608             block_Release( p_pkt );
609             break;
610
611         case 0x1ba:
612         {
613             int64_t i_scr;
614             int i_mux_rate;
615             if( !ps_pkt_parse_pack( p_pkt, &i_scr, &i_mux_rate ) )
616             {
617                 es_out_Control( p_demux->out, ES_OUT_SET_PCR, i_scr );
618 /*                if( i_mux_rate > 0 ) p_sys->i_mux_rate = i_mux_rate;*/
619             }
620             block_Release( p_pkt );
621             break;
622         }
623         default:
624         {
625             int i_id = ps_pkt_id( p_pkt );
626             if( i_id >= 0xc0 )
627             {
628                 ps_track_t *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
629
630                 if( !tk->b_seen )
631                 {
632                     ESNew( p_demux, i_id, 0 );
633                 }
634                 if( tk->b_seen && tk->es &&
635                     !ps_pkt_parse_pes( p_pkt, tk->i_skip ) )
636                 {
637                     es_out_Send( p_demux->out, tk->es, p_pkt );
638                 }
639                 else
640                 {
641                     block_Release( p_pkt );
642                 }
643             }
644             else
645             {
646                 block_Release( p_pkt );
647             }
648             break;
649         }
650         }
651
652         p += i_size;
653     }
654
655     return VLC_SUCCESS;
656 }
657
658 /*****************************************************************************
659  * ESNew: register a new elementary stream
660  *****************************************************************************/
661 static void ESNew( demux_t *p_demux, int i_id, int i_lang )
662 {
663     demux_sys_t *p_sys = p_demux->p_sys;
664     ps_track_t  *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
665     char psz_language[3];
666
667     if( tk->b_seen ) return;
668
669     if( ps_track_fill( tk, 0, i_id ) )
670     {
671         msg_Warn( p_demux, "unknown codec for id=0x%x", i_id );
672         return;
673     }
674
675     psz_language[0] = psz_language[1] = psz_language[2] = 0;
676     if( i_lang && i_lang != 0xffff )
677     {
678         psz_language[0] = (i_lang >> 8)&0xff;
679         psz_language[1] = (i_lang     )&0xff;
680     }
681
682     /* Add a new ES */
683     if( tk->fmt.i_cat == VIDEO_ES )
684     {
685         if( p_sys->i_aspect >= 0 )
686         {
687             tk->fmt.video.i_aspect = p_sys->i_aspect;
688         }
689     }
690     else if( tk->fmt.i_cat == AUDIO_ES )
691     {
692         int i_audio = -1;
693         /* find the audio number PLEASE find another way */
694         if( (i_id&0xbdf8) == 0xbd88 )       /* dts */
695         {
696             i_audio = i_id&0x07;
697         }
698         else if( (i_id&0xbdf0) == 0xbd80 )  /* a52 */
699         {
700             i_audio = i_id&0xf;
701         }
702         else if( (i_id&0xbdf0) == 0xbda0 )  /* lpcm */
703         {
704             i_audio = i_id&0x1f;
705         }
706         else if( ( i_id&0xe0 ) == 0xc0 )    /* mpga */
707         {
708             i_audio = i_id&0x1f;
709         }
710
711         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
712     }
713     else if( tk->fmt.i_cat == SPU_ES )
714     {
715         /* Palette */
716         tk->fmt.subs.spu.palette[0] = 0xBeef;
717         memcpy( &tk->fmt.subs.spu.palette[1], p_sys->clut,
718                 16 * sizeof( uint32_t ) );
719
720         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
721     }
722
723     tk->es = es_out_Add( p_demux->out, &tk->fmt );
724     tk->b_seen = VLC_TRUE;
725 }
726
727 /*****************************************************************************
728  * DvdReadSetArea: initialize input data for title x, chapter y.
729  * It should be called for each user navigation request.
730  *****************************************************************************
731  * Take care that i_title and i_chapter start from 0.
732  *****************************************************************************/
733 static int DvdReadSetArea( demux_t *p_demux, int i_title, int i_chapter,
734                            int i_angle )
735 {
736     demux_sys_t *p_sys = p_demux->p_sys;
737     int pgc_id = 0, pgn = 0;
738     int i;
739
740 #define p_pgc p_sys->p_cur_pgc
741 #define p_vmg p_sys->p_vmg_file
742 #define p_vts p_sys->p_vts_file
743
744     if( i_title >= 0 && i_title < p_sys->i_titles &&
745         i_title != p_sys->i_title )
746     {
747         int i_start_cell, i_end_cell;
748
749         if( p_sys->p_title != NULL ) DVDCloseFile( p_sys->p_title );
750         if( p_vts != NULL ) ifoClose( p_vts );
751         p_sys->i_title = i_title;
752
753         /*
754          *  We have to load all title information
755          */
756         msg_Dbg( p_demux, "open VTS %d, for title %d",
757                  p_vmg->tt_srpt->title[i_title].title_set_nr, i_title + 1 );
758
759         /* Ifo vts */
760         if( !( p_vts = ifoOpen( p_sys->p_dvdread,
761                p_vmg->tt_srpt->title[i_title].title_set_nr ) ) )
762         {
763             msg_Err( p_demux, "fatal error in vts ifo" );
764             return VLC_EGENERIC;
765         }
766
767         /* Title position inside the selected vts */
768         p_sys->i_ttn = p_vmg->tt_srpt->title[i_title].vts_ttn;
769
770         /* Find title start/end */
771         pgc_id = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgcn;
772         pgn = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgn;
773         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
774
775         p_sys->i_title_start_cell =
776             i_start_cell = p_pgc->program_map[pgn - 1] - 1;
777         p_sys->i_title_start_block =
778             p_pgc->cell_playback[i_start_cell].first_sector;
779
780         p_sys->i_title_end_cell =
781             i_end_cell = p_pgc->nr_of_cells - 1;
782         p_sys->i_title_end_block =
783             p_pgc->cell_playback[i_end_cell].last_sector;
784
785         p_sys->i_title_offset = 0;
786
787         p_sys->i_title_blocks = 0;
788         for( i = i_start_cell; i <= i_end_cell; i++ )
789         {
790             p_sys->i_title_blocks += p_pgc->cell_playback[i].last_sector -
791                 p_pgc->cell_playback[i].first_sector + 1;
792         }
793
794         msg_Dbg( p_demux, "title %d vts_title %d pgc %d pgn %d "
795                  "start %d end %d blocks: %d",
796                  i_title + 1, p_sys->i_ttn, pgc_id, pgn,
797                  p_sys->i_title_start_block, p_sys->i_title_end_block,
798                  p_sys->i_title_blocks );
799
800         /*
801          * Set properties for current chapter
802          */
803         p_sys->i_chapter = 0;
804         p_sys->i_chapters =
805             p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].nr_of_ptts;
806
807         pgc_id = p_vts->vts_ptt_srpt->title[
808                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgcn;
809         pgn = p_vts->vts_ptt_srpt->title[
810                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgn;
811
812         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
813         p_sys->i_pack_len = 0;
814         p_sys->i_next_cell =
815             p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
816         DvdReadFindCell( p_demux );
817
818         p_sys->i_next_vobu = p_sys->i_cur_block =
819             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
820
821         /*
822          * Angle management
823          */
824         p_sys->i_angles = p_vmg->tt_srpt->title[i_title].nr_of_angles;
825         if( p_sys->i_angle > p_sys->i_angles ) p_sys->i_angle = 1;
826
827         /*
828          * We've got enough info, time to open the title set data.
829          */
830         if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
831             p_vmg->tt_srpt->title[i_title].title_set_nr,
832             DVD_READ_TITLE_VOBS ) ) )
833         {
834             msg_Err( p_demux, "cannot open title (VTS_%02d_1.VOB)",
835                      p_vmg->tt_srpt->title[i_title].title_set_nr );
836             return VLC_EGENERIC;
837         }
838
839         //IfoPrintTitle( p_demux );
840
841         /*
842          * Destroy obsolete ES by reinitializing program 0
843          * and find all ES in title with ifo data
844          */
845         es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
846
847         for( i = 0; i < PS_TK_COUNT; i++ )
848         {
849             ps_track_t *tk = &p_sys->tk[i];
850             if( tk->b_seen )
851             {
852                 es_format_Clean( &tk->fmt );
853                 if( tk->es ) es_out_Del( p_demux->out, tk->es );
854             }
855             tk->b_seen = VLC_FALSE;
856         }
857
858         if( p_demux->info.i_title != i_title )
859         {
860             p_demux->info.i_update |=
861                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
862             p_demux->info.i_title = i_title;
863             p_demux->info.i_seekpoint = 0;
864         }
865
866         /* TODO: re-add angles */
867
868
869         ESNew( p_demux, 0xe0, 0 ); /* Video, FIXME ? */
870         p_sys->i_aspect = p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio;
871
872 #define audio_control \
873     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
874
875         /* Audio ES, in the order they appear in the .ifo */
876         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams; i++ )
877         {
878             int i_position = 0;
879             uint16_t i_id;
880
881             //IfoPrintAudio( p_demux, i );
882
883             /* Audio channel is active if first byte is 0x80 */
884             if( audio_control & 0x8000 )
885             {
886                 i_position = ( audio_control & 0x7F00 ) >> 8;
887
888                 msg_Dbg( p_demux, "audio position  %d", i_position );
889                 switch( p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format )
890                 {
891                 case 0x00: /* A52 */
892                     i_id = (0x80 + i_position) | 0xbd00;
893                     break;
894                 case 0x02:
895                 case 0x03: /* MPEG audio */
896                     i_id = 0xc000 + i_position;
897                     break;
898                 case 0x04: /* LPCM */
899                     i_id = (0xa0 + i_position) | 0xbd00;
900                     break;
901                 case 0x06: /* DTS */
902                     i_id = (0x88 + i_position) | 0xbd00;
903                     break;
904                 default:
905                     i_id = 0;
906                     msg_Err( p_demux, "unknown audio type %.2x",
907                         p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format );
908                 }
909
910                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
911                        vts_audio_attr[i - 1].lang_code );
912             }
913         }
914 #undef audio_control
915
916 #define spu_palette \
917     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->palette
918
919         memcpy( p_sys->clut, spu_palette, 16 * sizeof( uint32_t ) );
920
921 #define spu_control \
922     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
923
924         /* Sub Picture ES */
925         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
926         {
927             int i_position = 0;
928             uint16_t i_id;
929
930             //IfoPrintSpu( p_sys, i );
931             msg_Dbg( p_demux, "spu %d 0x%02x", i, spu_control );
932
933             if( spu_control & 0x80000000 )
934             {
935                 /*  there are several streams for one spu */
936                 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
937                 {
938                     /* 16:9 */
939                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
940                     {
941                     case 1: /* letterbox */
942                         i_position = spu_control & 0xff;
943                         break;
944                     case 2: /* pan&scan */
945                         i_position = ( spu_control >> 8 ) & 0xff;
946                         break;
947                     default: /* widescreen */
948                         i_position = ( spu_control >> 16 ) & 0xff;
949                         break;
950                     }
951                 }
952                 else
953                 {
954                     /* 4:3 */
955                     i_position = ( spu_control >> 24 ) & 0x7F;
956                 }
957
958                 i_id = (0x20 + i_position) | 0xbd00;
959
960                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
961                        vts_subp_attr[i - 1].lang_code );
962             }
963         }
964 #undef spu_control
965
966     }
967     else if( i_title != -1 && i_title != p_sys->i_title )
968
969     {
970         return VLC_EGENERIC; /* Couldn't set title */
971     }
972
973     /*
974      * Chapter selection
975      */
976
977     if( i_chapter >= 0 && i_chapter < p_sys->i_chapters )
978     {
979         pgc_id = p_vts->vts_ptt_srpt->title[
980                      p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
981         pgn = p_vts->vts_ptt_srpt->title[
982                   p_sys->i_ttn - 1].ptt[i_chapter].pgn;
983
984         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
985
986         p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
987         p_sys->i_chapter = i_chapter;
988         DvdReadFindCell( p_demux );
989
990         p_sys->i_title_offset = 0;
991         for( i = p_sys->i_title_start_cell; i < p_sys->i_cur_cell; i++ )
992         {
993             p_sys->i_title_offset += p_pgc->cell_playback[i].last_sector -
994                 p_pgc->cell_playback[i].first_sector + 1;
995         }
996
997         p_sys->i_pack_len = 0;
998         p_sys->i_next_vobu = p_sys->i_cur_block =
999             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1000
1001         if( p_demux->info.i_seekpoint != i_chapter )
1002         {
1003             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1004             p_demux->info.i_seekpoint = i_chapter;
1005         }
1006     }
1007     else if( i_chapter != -1 )
1008
1009     {
1010         return VLC_EGENERIC; /* Couldn't set chapter */
1011     }
1012
1013 #undef p_pgc
1014 #undef p_vts
1015 #undef p_vmg
1016
1017     return VLC_SUCCESS;
1018 }
1019
1020 /*****************************************************************************
1021  * DvdReadSeek : Goes to a given position on the stream.
1022  *****************************************************************************
1023  * This one is used by the input and translate chronological position from
1024  * input to logical position on the device.
1025  *****************************************************************************/
1026 static void DvdReadSeek( demux_t *p_demux, int i_block_offset )
1027 {
1028     demux_sys_t *p_sys = p_demux->p_sys;
1029     int i_chapter = 0;
1030     int i_cell = 0;
1031     int i_vobu = 0;
1032     int i_sub_cell = 0;
1033     int i_block;
1034
1035 #define p_pgc p_sys->p_cur_pgc
1036 #define p_vts p_sys->p_vts_file
1037
1038     /* Find cell */
1039     i_block = i_block_offset;
1040     for( i_cell = p_sys->i_title_start_cell;
1041          i_cell <= p_sys->i_title_end_cell; i_cell++ )
1042     {
1043         if( i_block < (int)p_pgc->cell_playback[i_cell].last_sector -
1044             (int)p_pgc->cell_playback[i_cell].first_sector + 1 ) break;
1045
1046         i_block -= (p_pgc->cell_playback[i_cell].last_sector -
1047             p_pgc->cell_playback[i_cell].first_sector + 1);
1048     }
1049     if( i_cell > p_sys->i_title_end_cell )
1050     {
1051         msg_Err( p_demux, "couldn't find cell for block %i", i_block_offset );
1052         return;
1053     }
1054     i_block += p_pgc->cell_playback[i_cell].first_sector;
1055     p_sys->i_title_offset = i_block_offset;
1056
1057     /* Find chapter */
1058     for( i_chapter = 0; i_chapter < p_sys->i_chapters; i_chapter++ )
1059     {
1060         int pgc_id, pgn, i_tmp;
1061
1062         pgc_id = p_vts->vts_ptt_srpt->title[
1063                     p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
1064         pgn = p_vts->vts_ptt_srpt->title[
1065                     p_sys->i_ttn - 1].ptt[i_chapter].pgn;
1066
1067         i_tmp = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc->program_map[pgn-1];
1068
1069         if( i_tmp > i_cell ) break;
1070     }
1071
1072     if( i_chapter < p_sys->i_chapters &&
1073         p_demux->info.i_seekpoint != i_chapter )
1074     {
1075         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1076         p_demux->info.i_seekpoint = i_chapter;
1077     }
1078
1079     /* Find vobu */
1080     while( (int)p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu] <= i_block )
1081     {
1082         i_vobu++;
1083     }
1084
1085     /* Find sub_cell */
1086     while( p_vts->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1087            p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1088     {
1089         i_sub_cell++;
1090     }
1091
1092 #if 1
1093     msg_Dbg( p_demux, "cell %d i_sub_cell %d chapter %d vobu %d "
1094              "cell_sector %d vobu_sector %d sub_cell_sector %d",
1095              i_cell, i_sub_cell, i_chapter, i_vobu,
1096              p_sys->p_cur_pgc->cell_playback[i_cell].first_sector,
1097              p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu],
1098              p_vts->vts_c_adt->cell_adr_table[i_sub_cell - 1].start_sector);
1099 #endif
1100
1101     p_sys->i_cur_block = i_block;
1102     p_sys->i_next_vobu = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu];
1103     p_sys->i_pack_len = p_sys->i_next_vobu - i_block;
1104     p_sys->i_cur_cell = i_cell;
1105     p_sys->i_chapter = i_chapter;
1106     DvdReadFindCell( p_demux );
1107
1108 #undef p_vts
1109 #undef p_pgc
1110
1111     return;
1112 }
1113
1114 /*****************************************************************************
1115  * DvdReadHandleDSI
1116  *****************************************************************************/
1117 static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
1118 {
1119     demux_sys_t *p_sys = p_demux->p_sys;
1120
1121     navRead_DSI( &p_sys->dsi_pack, &p_data[DSI_START_BYTE] );
1122
1123     /*
1124      * Determine where we go next.  These values are the ones we mostly
1125      * care about.
1126      */
1127     p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
1128     p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
1129
1130     /*
1131      * If we're not at the end of this cell, we can determine the next
1132      * VOBU to display using the VOBU_SRI information section of the
1133      * DSI.  Using this value correctly follows the current angle,
1134      * avoiding the doubled scenes in The Matrix, and makes our life
1135      * really happy.
1136      */
1137
1138     p_sys->i_next_vobu = p_sys->i_cur_block +
1139         ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1140
1141     if( p_sys->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL
1142         && p_sys->i_angle > 1 )
1143     {
1144         switch( ( p_sys->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1145         {
1146         case 0x4:
1147             /* Interleaved unit with no angle */
1148             if( p_sys->dsi_pack.sml_pbi.ilvu_sa != 0 )
1149             {
1150                 p_sys->i_next_vobu = p_sys->i_cur_block +
1151                     p_sys->dsi_pack.sml_pbi.ilvu_sa;
1152                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1153             }
1154             else
1155             {
1156                 p_sys->i_next_vobu = p_sys->i_cur_block +
1157                     p_sys->dsi_pack.dsi_gi.vobu_ea + 1;
1158             }
1159             break;
1160         case 0x5:
1161             /* vobu is end of ilvu */
1162             if( p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address )
1163             {
1164                 p_sys->i_next_vobu = p_sys->i_cur_block +
1165                     p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address;
1166                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1167
1168                 break;
1169             }
1170         case 0x6:
1171             /* vobu is beginning of ilvu */
1172         case 0x9:
1173             /* next scr is 0 */
1174         case 0xa:
1175             /* entering interleaved section */
1176         case 0x8:
1177             /* non interleaved cells in interleaved section */
1178         default:
1179             p_sys->i_next_vobu = p_sys->i_cur_block +
1180                 ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1181             break;
1182         }
1183     }
1184     else if( p_sys->dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
1185     {
1186         p_sys->i_cur_cell = p_sys->i_next_cell;
1187
1188         /* End of title */
1189         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells ) return;
1190
1191         DvdReadFindCell( p_demux );
1192
1193         p_sys->i_next_vobu =
1194             p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1195     }
1196
1197 #if 0
1198     msg_Dbg( p_demux, 12, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d",
1199              p_sys->dsi_pack.dsi_gi.nv_pck_scr,
1200              p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
1201              p_sys->dsi_pack.dsi_gi.vobu_ea,
1202              p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
1203              p_sys->dsi_pack.dsi_gi.vobu_c_idn );
1204
1205     msg_Dbg( p_demux, 12, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1206              p_sys->dsi_pack.sml_pbi.category,
1207              p_sys->dsi_pack.sml_pbi.ilvu_ea,
1208              p_sys->dsi_pack.sml_pbi.ilvu_sa,
1209              p_sys->dsi_pack.sml_pbi.size );
1210
1211     msg_Dbg( p_demux, 12, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1212              p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1213              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
1214              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);
1215 #endif
1216 }
1217
1218 /*****************************************************************************
1219  * DvdReadFindCell
1220  *****************************************************************************/
1221 static void DvdReadFindCell( demux_t *p_demux )
1222 {
1223     demux_sys_t *p_sys = p_demux->p_sys;
1224
1225     pgc_t *p_pgc;
1226     int   pgc_id, pgn;
1227     int   i = 0;
1228
1229 #define cell p_sys->p_cur_pgc->cell_playback
1230
1231     if( cell[p_sys->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1232     {
1233         p_sys->i_cur_cell += p_sys->i_angle - 1;
1234
1235         while( cell[p_sys->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1236         {
1237             i++;
1238         }
1239         p_sys->i_next_cell = p_sys->i_cur_cell + i + 1;
1240     }
1241     else
1242     {
1243         p_sys->i_next_cell = p_sys->i_cur_cell + 1;
1244     }
1245
1246 #undef cell
1247
1248     if( p_sys->i_chapter + 1 >= p_sys->i_chapters ) return;
1249
1250     pgc_id = p_sys->p_vts_file->vts_ptt_srpt->title[
1251                 p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgcn;
1252     pgn = p_sys->p_vts_file->vts_ptt_srpt->title[
1253               p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgn;
1254     p_pgc = p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
1255
1256     if( p_sys->i_cur_cell >= p_pgc->program_map[pgn - 1] - 1 )
1257     {
1258         p_sys->i_chapter++;
1259
1260         if( p_sys->i_chapter < p_sys->i_chapters &&
1261             p_demux->info.i_seekpoint != p_sys->i_chapter )
1262         {
1263             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1264             p_demux->info.i_seekpoint = p_sys->i_chapter;
1265         }
1266     }
1267 }
1268
1269 /*****************************************************************************
1270  * DemuxTitles: get the titles/chapters structure
1271  *****************************************************************************/
1272 static void DemuxTitles( demux_t *p_demux, int *pi_angle )
1273 {
1274     demux_sys_t *p_sys = p_demux->p_sys;
1275     input_title_t *t;
1276     seekpoint_t *s;
1277     int32_t i_titles;
1278     int i;
1279
1280     /* Find out number of titles/chapters */
1281 #define tt_srpt p_sys->p_vmg_file->tt_srpt
1282
1283     i_titles = tt_srpt->nr_of_srpts;
1284     msg_Dbg( p_demux, "number of titles: %d", i_titles );
1285
1286     for( i = 0; i < i_titles; i++ )
1287     {
1288         int32_t i_chapters = 0;
1289         int j;
1290
1291         i_chapters = tt_srpt->title[i].nr_of_ptts;
1292         msg_Dbg( p_demux, "title %d has %d chapters", i, i_chapters );
1293
1294         t = vlc_input_title_New();
1295
1296         for( j = 0; j < __MAX( i_chapters, 1 ); j++ )
1297         {
1298             s = vlc_seekpoint_New();
1299             TAB_APPEND( t->i_seekpoint, t->seekpoint, s );
1300         }
1301
1302         TAB_APPEND( p_sys->i_titles, p_sys->titles, t );
1303     }
1304
1305 #undef tt_srpt
1306 }