dvdread: fix use after free on error (refs #6594)
[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_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_input.h>
36 #include <vlc_access.h>
37 #include <vlc_charset.h>
38 #include <vlc_interface.h>
39 #include <vlc_dialog.h>
40
41 #include <vlc_iso_lang.h>
42
43 #include "../demux/ps.h"
44
45 #ifdef HAVE_UNISTD_H
46 #   include <unistd.h>
47 #endif
48
49 #include <sys/types.h>
50
51 #include <dvdread/dvd_reader.h>
52 #include <dvdread/ifo_types.h>
53 #include <dvdread/ifo_read.h>
54 #include <dvdread/nav_read.h>
55 #include <dvdread/nav_print.h>
56
57 #include <assert.h>
58
59 /*****************************************************************************
60  * Module descriptor
61  *****************************************************************************/
62 #define ANGLE_TEXT N_("DVD angle")
63 #define ANGLE_LONGTEXT N_( \
64     "Default DVD angle." )
65
66 static int  Open ( vlc_object_t * );
67 static void Close( vlc_object_t * );
68
69 vlc_module_begin ()
70     set_shortname( N_("DVD without menus") )
71     set_description( N_("DVDRead Input (no menu support)") )
72     set_category( CAT_INPUT )
73     set_subcategory( SUBCAT_INPUT_ACCESS )
74     add_integer( "dvdread-angle", 1, ANGLE_TEXT,
75         ANGLE_LONGTEXT, false )
76     add_obsolete_string( "dvdread-css-method" ) /* obsolete since 1.1.0 */
77     set_capability( "access_demux", 0 )
78     add_shortcut( "dvd", "dvdread", "dvdsimple" )
79     set_callbacks( Open, Close )
80 vlc_module_end ()
81
82 /* how many blocks DVDRead will read in each loop */
83 #define DVD_BLOCK_READ_ONCE 4
84
85 /*****************************************************************************
86  * Local prototypes
87  *****************************************************************************/
88
89 struct demux_sys_t
90 {
91     /* DVDRead state */
92     dvd_reader_t *p_dvdread;
93     dvd_file_t   *p_title;
94
95     ifo_handle_t *p_vmg_file;
96     ifo_handle_t *p_vts_file;
97
98     int i_title;
99     int i_chapter, i_chapters;
100     int i_angle, i_angles;
101
102     tt_srpt_t    *p_tt_srpt;
103     pgc_t        *p_cur_pgc;
104     dsi_t        dsi_pack;
105     int          i_ttn;
106
107     int i_pack_len;
108     int i_cur_block;
109     int i_next_vobu;
110
111     int i_mux_rate;
112
113     /* Current title start/end blocks */
114     int i_title_start_block;
115     int i_title_end_block;
116     int i_title_blocks;
117     int i_title_offset;
118     mtime_t i_title_cur_time;
119
120     int i_title_start_cell;
121     int i_title_end_cell;
122     int i_cur_cell;
123     int i_next_cell;
124     mtime_t i_cell_cur_time;
125     mtime_t i_cell_duration;
126
127     /* Track */
128     ps_track_t    tk[PS_TK_COUNT];
129
130     int           i_titles;
131     input_title_t **titles;
132
133     /* Video */
134     int i_sar_num;
135     int i_sar_den;
136
137     /* SPU */
138     uint32_t clut[16];
139 };
140
141 static int Control   ( demux_t *, int, va_list );
142 static int Demux     ( demux_t * );
143 static int DemuxBlock( demux_t *, const uint8_t *, int );
144
145 static void DemuxTitles( demux_t *, int * );
146 static void ESNew( demux_t *, int, int );
147
148 static int  DvdReadSetArea  ( demux_t *, int, int, int );
149 static void DvdReadSeek     ( demux_t *, int );
150 static void DvdReadHandleDSI( demux_t *, uint8_t * );
151 static void DvdReadFindCell ( demux_t * );
152
153 /*****************************************************************************
154  * Open:
155  *****************************************************************************/
156 static int Open( vlc_object_t *p_this )
157 {
158     demux_t      *p_demux = (demux_t*)p_this;
159     demux_sys_t  *p_sys;
160     char         *psz_file;
161     ifo_handle_t *p_vmg_file;
162
163     if( !p_demux->psz_file || !*p_demux->psz_file )
164     {
165         /* Only when selected */
166         if( !p_demux->psz_access || !*p_demux->psz_access )
167             return VLC_EGENERIC;
168
169         psz_file = var_InheritString( p_this, "dvd" );
170     }
171     else
172         psz_file = strdup( p_demux->psz_file );
173
174 #if defined( WIN32 ) || defined( __OS2__ )
175     if( psz_file != NULL )
176     {
177         size_t flen = strlen( psz_file );
178         if( flen > 0 && psz_file[flen - 1] == '\\' )
179             psz_file[flen - 1] = '\0';
180     }
181     else
182         psz_file = strdup("");
183 #endif
184     if( unlikely(psz_file == NULL) )
185         return VLC_EGENERIC;
186
187     /* Open dvdread */
188     const char *psz_path = ToLocale( psz_file );
189     dvd_reader_t *p_dvdread = DVDOpen( psz_path );
190
191     LocaleFree( psz_path );
192     if( p_dvdread == NULL )
193     {
194         msg_Err( p_demux, "DVDRead cannot open source: %s", psz_file );
195         dialog_Fatal( p_demux, _("Playback failure"),
196                       _("DVDRead could not open the disc \"%s\"."), psz_file );
197         free( psz_file );
198         return VLC_EGENERIC;
199     }
200     free( psz_file );
201
202     /* Ifo allocation & initialisation */
203     if( !( p_vmg_file = ifoOpen( p_dvdread, 0 ) ) )
204     {
205         msg_Warn( p_demux, "cannot open VMG info" );
206         return VLC_EGENERIC;
207     }
208     msg_Dbg( p_demux, "VMG opened" );
209
210     /* Fill p_demux field */
211     DEMUX_INIT_COMMON(); p_sys = p_demux->p_sys;
212
213     ps_track_init( p_sys->tk );
214     p_sys->i_sar_num = 0;
215     p_sys->i_sar_den = 0;
216     p_sys->i_title_cur_time = (mtime_t) 0;
217     p_sys->i_cell_cur_time = (mtime_t) 0;
218     p_sys->i_cell_duration = (mtime_t) 0;
219
220     p_sys->p_dvdread = p_dvdread;
221     p_sys->p_vmg_file = p_vmg_file;
222     p_sys->p_title = NULL;
223     p_sys->p_vts_file = NULL;
224
225     p_sys->i_title = p_sys->i_chapter = -1;
226     p_sys->i_mux_rate = 0;
227
228     p_sys->i_angle = var_CreateGetInteger( p_demux, "dvdread-angle" );
229     if( p_sys->i_angle <= 0 ) p_sys->i_angle = 1;
230
231     DemuxTitles( p_demux, &p_sys->i_angle );
232     if( DvdReadSetArea( p_demux, 0, 0, p_sys->i_angle ) != VLC_SUCCESS )
233     {
234         msg_Err( p_demux, "DvdReadSetArea(0,0,%i) failed (can't decrypt DVD?)",
235                  p_sys->i_angle );
236         Close( p_this );
237         return VLC_EGENERIC;
238     }
239
240     return VLC_SUCCESS;
241 }
242
243 /*****************************************************************************
244  * Close:
245  *****************************************************************************/
246 static void Close( vlc_object_t *p_this )
247 {
248     demux_t     *p_demux = (demux_t*)p_this;
249     demux_sys_t *p_sys = p_demux->p_sys;
250     int i;
251
252     for( i = 0; i < PS_TK_COUNT; i++ )
253     {
254         ps_track_t *tk = &p_sys->tk[i];
255         if( tk->b_seen )
256         {
257             es_format_Clean( &tk->fmt );
258             if( tk->es ) es_out_Del( p_demux->out, tk->es );
259         }
260     }
261
262     /* Free the array of titles */
263     for( int i = 0; i < p_sys->i_titles; i++ )
264         vlc_input_title_Delete( p_sys->titles[i] );
265     TAB_CLEAN( p_sys->i_titles, p_sys->titles );
266
267     /* Close libdvdread */
268     if( p_sys->p_title ) DVDCloseFile( p_sys->p_title );
269     if( p_sys->p_vts_file ) ifoClose( p_sys->p_vts_file );
270     if( p_sys->p_vmg_file ) ifoClose( p_sys->p_vmg_file );
271     DVDClose( p_sys->p_dvdread );
272
273     free( p_sys );
274 }
275
276 static int64_t dvdtime_to_time( dvd_time_t *dtime, uint8_t still_time )
277 {
278 /* Macro to convert Binary Coded Decimal to Decimal */
279 #define BCD2D(__x__) (((__x__ & 0xf0) >> 4) * 10 + (__x__ & 0x0f))
280
281     double f_fps, f_ms;
282     int64_t i_micro_second = 0;
283
284     if (still_time == 0 || still_time == 0xFF)
285     {
286         i_micro_second += (int64_t)(BCD2D(dtime->hour)) * 60 * 60 * 1000000;
287         i_micro_second += (int64_t)(BCD2D(dtime->minute)) * 60 * 1000000;
288         i_micro_second += (int64_t)(BCD2D(dtime->second)) * 1000000;
289
290         switch((dtime->frame_u & 0xc0) >> 6)
291         {
292         case 1:
293             f_fps = 25.0;
294             break;
295         case 3:
296             f_fps = 29.97;
297             break;
298         default:
299             f_fps = 2500.0;
300             break;
301         }
302         f_ms = BCD2D(dtime->frame_u&0x3f) * 1000.0 / f_fps;
303         i_micro_second += (int64_t)(f_ms * 1000.0);
304     }
305     else
306     {
307         i_micro_second = still_time;
308         i_micro_second = (int64_t)((double)i_micro_second * 1000000.0);
309     }
310
311     return i_micro_second;
312 }
313
314 /*****************************************************************************
315  * Control:
316  *****************************************************************************/
317 static int Control( demux_t *p_demux, int i_query, va_list args )
318 {
319     demux_sys_t *p_sys = p_demux->p_sys;
320     double f, *pf;
321     bool *pb;
322     int64_t *pi64;
323     input_title_t ***ppp_title;
324     int *pi_int;
325     int i;
326
327     switch( i_query )
328     {
329         case DEMUX_GET_POSITION:
330         {
331             pf = (double*) va_arg( args, double* );
332
333             if( p_sys->i_title_blocks > 0 )
334                 *pf = (double)p_sys->i_title_offset / p_sys->i_title_blocks;
335             else
336                 *pf = 0.0;
337
338             return VLC_SUCCESS;
339         }
340         case DEMUX_SET_POSITION:
341         {
342             f = (double)va_arg( args, double );
343
344             DvdReadSeek( p_demux, f * p_sys->i_title_blocks );
345
346             return VLC_SUCCESS;
347         }
348         case DEMUX_GET_TIME:
349             pi64 = (int64_t*)va_arg( args, int64_t * );
350             if( p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles )
351             {
352                 *pi64 = (int64_t) dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 ) /
353                         p_sys->i_title_blocks * p_sys->i_title_offset;
354                 return VLC_SUCCESS;
355             }
356             *pi64 = 0;
357             return VLC_EGENERIC;
358
359         case DEMUX_GET_LENGTH:
360             pi64 = (int64_t*)va_arg( args, int64_t * );
361             if( p_demux->info.i_title >= 0 && p_demux->info.i_title < p_sys->i_titles )
362             {
363                 *pi64 = (int64_t)dvdtime_to_time( &p_sys->p_cur_pgc->playback_time, 0 );
364                 return VLC_SUCCESS;
365             }
366             *pi64 = 0;
367             return VLC_EGENERIC;
368
369         /* Special for access_demux */
370         case DEMUX_CAN_PAUSE:
371         case DEMUX_CAN_SEEK:
372         case DEMUX_CAN_CONTROL_PACE:
373             /* TODO */
374             pb = (bool*)va_arg( args, bool * );
375             *pb = true;
376             return VLC_SUCCESS;
377
378         case DEMUX_SET_PAUSE_STATE:
379             return VLC_SUCCESS;
380
381         case DEMUX_GET_TITLE_INFO:
382             ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
383             pi_int    = (int*)va_arg( args, int* );
384             *((int*)va_arg( args, int* )) = 1; /* Title offset */
385             *((int*)va_arg( args, int* )) = 1; /* Chapter offset */
386
387             /* Duplicate title infos */
388             *pi_int = p_sys->i_titles;
389             *ppp_title = malloc( sizeof(input_title_t **) * p_sys->i_titles );
390             for( i = 0; i < p_sys->i_titles; i++ )
391             {
392                 (*ppp_title)[i] = vlc_input_title_Duplicate(p_sys->titles[i]);
393             }
394             return VLC_SUCCESS;
395
396         case DEMUX_SET_TITLE:
397             i = (int)va_arg( args, int );
398             if( DvdReadSetArea( p_demux, i, 0, -1 ) != VLC_SUCCESS )
399             {
400                 msg_Warn( p_demux, "cannot set title/chapter" );
401                 return VLC_EGENERIC;
402             }
403             p_demux->info.i_update |=
404                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
405             p_demux->info.i_title = i;
406             p_demux->info.i_seekpoint = 0;
407             return VLC_SUCCESS;
408
409         case DEMUX_SET_SEEKPOINT:
410             i = (int)va_arg( args, int );
411             if( DvdReadSetArea( p_demux, -1, i, -1 ) != VLC_SUCCESS )
412             {
413                 msg_Warn( p_demux, "cannot set title/chapter" );
414                 return VLC_EGENERIC;
415             }
416             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
417             p_demux->info.i_seekpoint = i;
418             return VLC_SUCCESS;
419
420         case DEMUX_GET_PTS_DELAY:
421             pi64 = (int64_t*)va_arg( args, int64_t * );
422             *pi64 =
423                 INT64_C(1000) * var_InheritInteger( p_demux, "disc-caching" );
424             return VLC_SUCCESS;
425
426         /* TODO implement others */
427         default:
428             return VLC_EGENERIC;
429     }
430 }
431
432 /*****************************************************************************
433  * Demux:
434  *****************************************************************************/
435 static int Demux( demux_t *p_demux )
436 {
437     demux_sys_t *p_sys = p_demux->p_sys;
438
439     uint8_t p_buffer[DVD_VIDEO_LB_LEN * DVD_BLOCK_READ_ONCE];
440     int i_blocks_once, i_read;
441     int i;
442
443     /*
444      * Playback by cell in this pgc, starting at the cell for our chapter.
445      */
446
447     /*
448      * Check end of pack, and select the following one
449      */
450     if( !p_sys->i_pack_len )
451     {
452         /* Read NAV packet */
453         if( DVDReadBlocks( p_sys->p_title, p_sys->i_next_vobu,
454                            1, p_buffer ) != 1 )
455         {
456             msg_Err( p_demux, "read failed for block %d", p_sys->i_next_vobu );
457             dialog_Fatal( p_demux, _("Playback failure"),
458                           _("DVDRead could not read block %d."),
459                           p_sys->i_next_vobu );
460             return -1;
461         }
462
463         /* Basic check to be sure we don't have a empty title
464          * go to next title if so */
465         //assert( p_buffer[41] == 0xbf && p_buffer[1027] == 0xbf );
466
467         /* Parse the contained dsi packet */
468         DvdReadHandleDSI( p_demux, p_buffer );
469
470         /* End of title */
471         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
472         {
473             if( p_sys->i_title + 1 >= p_sys->i_titles )
474             {
475                 return 0; /* EOF */
476             }
477
478             DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
479         }
480
481         if( p_sys->i_pack_len >= 1024 )
482         {
483             msg_Err( p_demux, "i_pack_len >= 1024 (%i). "
484                      "This shouldn't happen!", p_sys->i_pack_len );
485             return 0; /* EOF */
486         }
487
488         /* FIXME: Ugly kludge: we send the pack block to the input for it
489          * sometimes has a zero scr and restart the sync */
490         p_sys->i_cur_block++;
491         p_sys->i_title_offset++;
492
493         DemuxBlock( p_demux, p_buffer, DVD_VIDEO_LB_LEN );
494     }
495
496     if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells )
497     {
498         if( p_sys->i_title + 1 >= p_sys->i_titles )
499         {
500             return 0; /* EOF */
501         }
502
503         DvdReadSetArea( p_demux, p_sys->i_title + 1, 0, -1 );
504     }
505
506     /*
507      * Read actual data
508      */
509     i_blocks_once = __MIN( p_sys->i_pack_len, DVD_BLOCK_READ_ONCE );
510     p_sys->i_pack_len -= i_blocks_once;
511
512     /* Reads from DVD */
513     i_read = DVDReadBlocks( p_sys->p_title, p_sys->i_cur_block,
514                             i_blocks_once, p_buffer );
515     if( i_read != i_blocks_once )
516     {
517         msg_Err( p_demux, "read failed for %d/%d blocks at 0x%02x",
518                  i_read, i_blocks_once, p_sys->i_cur_block );
519         dialog_Fatal( p_demux, _("Playback failure"),
520                         _("DVDRead could not read %d/%d blocks at 0x%02x."),
521                         i_read, i_blocks_once, p_sys->i_cur_block );
522         return -1;
523     }
524
525     p_sys->i_cur_block += i_read;
526     p_sys->i_title_offset += i_read;
527
528 #if 0
529     msg_Dbg( p_demux, "i_blocks: %d len: %d current: 0x%02x",
530              i_read, p_sys->i_pack_len, p_sys->i_cur_block );
531 #endif
532
533     for( i = 0; i < i_read; i++ )
534     {
535         DemuxBlock( p_demux, p_buffer + i * DVD_VIDEO_LB_LEN,
536                     DVD_VIDEO_LB_LEN );
537     }
538
539 #undef p_pgc
540
541     return 1;
542 }
543
544 /*****************************************************************************
545  * DemuxBlock: demux a given block
546  *****************************************************************************/
547 static int DemuxBlock( demux_t *p_demux, const uint8_t *p, int len )
548 {
549     demux_sys_t *p_sys = p_demux->p_sys;
550
551     while( len > 0 )
552     {
553         int i_size = ps_pkt_size( p, len );
554         if( i_size <= 0 || i_size > len )
555         {
556             break;
557         }
558
559         /* Create a block */
560         block_t *p_pkt = block_New( p_demux, i_size );
561         memcpy( p_pkt->p_buffer, p, i_size);
562
563         /* Parse it and send it */
564         switch( 0x100 | p[3] )
565         {
566         case 0x1b9:
567         case 0x1bb:
568         case 0x1bc:
569
570 #ifdef DVDREAD_DEBUG
571             if( p[3] == 0xbc )
572             {
573                 msg_Warn( p_demux, "received a PSM packet" );
574             }
575             else if( p[3] == 0xbb )
576             {
577                 msg_Warn( p_demux, "received a SYSTEM packet" );
578             }
579 #endif
580             block_Release( p_pkt );
581             break;
582
583         case 0x1ba:
584         {
585             int64_t i_scr;
586             int i_mux_rate;
587             if( !ps_pkt_parse_pack( p_pkt, &i_scr, &i_mux_rate ) )
588             {
589                 es_out_Control( p_demux->out, ES_OUT_SET_PCR, i_scr );
590                 if( i_mux_rate > 0 ) p_sys->i_mux_rate = i_mux_rate;
591             }
592             block_Release( p_pkt );
593             break;
594         }
595         default:
596         {
597             int i_id = ps_pkt_id( p_pkt );
598             if( i_id >= 0xc0 )
599             {
600                 ps_track_t *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
601
602                 if( !tk->b_seen )
603                 {
604                     ESNew( p_demux, i_id, 0 );
605                 }
606                 if( tk->b_seen && tk->es &&
607                     !ps_pkt_parse_pes( p_pkt, tk->i_skip ) )
608                 {
609                     es_out_Send( p_demux->out, tk->es, p_pkt );
610                 }
611                 else
612                 {
613                     block_Release( p_pkt );
614                 }
615             }
616             else
617             {
618                 block_Release( p_pkt );
619             }
620             break;
621         }
622         }
623
624         p += i_size;
625         len -= i_size;
626     }
627
628     return VLC_SUCCESS;
629 }
630
631 /*****************************************************************************
632  * ESNew: register a new elementary stream
633  *****************************************************************************/
634 static void ESNew( demux_t *p_demux, int i_id, int i_lang )
635 {
636     demux_sys_t *p_sys = p_demux->p_sys;
637     ps_track_t  *tk = &p_sys->tk[PS_ID_TO_TK(i_id)];
638     char psz_language[3];
639
640     if( tk->b_seen ) return;
641
642     if( ps_track_fill( tk, 0, i_id ) )
643     {
644         msg_Warn( p_demux, "unknown codec for id=0x%x", i_id );
645         return;
646     }
647
648     psz_language[0] = psz_language[1] = psz_language[2] = 0;
649     if( i_lang && i_lang != 0xffff )
650     {
651         psz_language[0] = (i_lang >> 8)&0xff;
652         psz_language[1] = (i_lang     )&0xff;
653     }
654
655     /* Add a new ES */
656     if( tk->fmt.i_cat == VIDEO_ES )
657     {
658         tk->fmt.video.i_sar_num = p_sys->i_sar_num;
659         tk->fmt.video.i_sar_den = p_sys->i_sar_den;
660     }
661     else if( tk->fmt.i_cat == AUDIO_ES )
662     {
663 #if 0
664         int i_audio = -1;
665         /* find the audio number PLEASE find another way */
666         if( (i_id&0xbdf8) == 0xbd88 )       /* dts */
667         {
668             i_audio = i_id&0x07;
669         }
670         else if( (i_id&0xbdf0) == 0xbd80 )  /* a52 */
671         {
672             i_audio = i_id&0xf;
673         }
674         else if( (i_id&0xbdf0) == 0xbda0 )  /* lpcm */
675         {
676             i_audio = i_id&0x1f;
677         }
678         else if( ( i_id&0xe0 ) == 0xc0 )    /* mpga */
679         {
680             i_audio = i_id&0x1f;
681         }
682 #endif
683
684         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
685     }
686     else if( tk->fmt.i_cat == SPU_ES )
687     {
688         /* Palette */
689         tk->fmt.subs.spu.palette[0] = 0xBeef;
690         memcpy( &tk->fmt.subs.spu.palette[1], p_sys->clut,
691                 16 * sizeof( uint32_t ) );
692
693         if( psz_language[0] ) tk->fmt.psz_language = strdup( psz_language );
694     }
695
696     tk->es = es_out_Add( p_demux->out, &tk->fmt );
697     tk->b_seen = true;
698 }
699
700 /*****************************************************************************
701  * DvdReadSetArea: initialize input data for title x, chapter y.
702  * It should be called for each user navigation request.
703  *****************************************************************************
704  * Take care that i_title and i_chapter start from 0.
705  *****************************************************************************/
706 static int DvdReadSetArea( demux_t *p_demux, int i_title, int i_chapter,
707                            int i_angle )
708 {
709     VLC_UNUSED( i_angle );
710
711     demux_sys_t *p_sys = p_demux->p_sys;
712     int pgc_id = 0, pgn = 0;
713     int i;
714
715 #define p_pgc p_sys->p_cur_pgc
716 #define p_vmg p_sys->p_vmg_file
717 #define p_vts p_sys->p_vts_file
718
719     if( i_title >= 0 && i_title < p_sys->i_titles &&
720         i_title != p_sys->i_title )
721     {
722         int i_start_cell, i_end_cell;
723
724         if( p_sys->p_title != NULL ) DVDCloseFile( p_sys->p_title );
725         if( p_vts != NULL ) ifoClose( p_vts );
726         p_sys->i_title = i_title;
727
728         /*
729          *  We have to load all title information
730          */
731         msg_Dbg( p_demux, "open VTS %d, for title %d",
732                  p_vmg->tt_srpt->title[i_title].title_set_nr, i_title + 1 );
733
734         /* Ifo vts */
735         if( !( p_vts = ifoOpen( p_sys->p_dvdread,
736                p_vmg->tt_srpt->title[i_title].title_set_nr ) ) )
737         {
738             msg_Err( p_demux, "fatal error in vts ifo" );
739             return VLC_EGENERIC;
740         }
741
742         /* Title position inside the selected vts */
743         p_sys->i_ttn = p_vmg->tt_srpt->title[i_title].vts_ttn;
744
745         /* Find title start/end */
746         pgc_id = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgcn;
747         pgn = p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].ptt[0].pgn;
748         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
749
750         p_sys->i_title_start_cell =
751             i_start_cell = p_pgc->program_map[pgn - 1] - 1;
752         p_sys->i_title_start_block =
753             p_pgc->cell_playback[i_start_cell].first_sector;
754
755         p_sys->i_title_end_cell =
756             i_end_cell = p_pgc->nr_of_cells - 1;
757         p_sys->i_title_end_block =
758             p_pgc->cell_playback[i_end_cell].last_sector;
759
760         p_sys->i_title_offset = 0;
761
762         p_sys->i_title_blocks = 0;
763         for( i = i_start_cell; i <= i_end_cell; i++ )
764         {
765             p_sys->i_title_blocks += p_pgc->cell_playback[i].last_sector -
766                 p_pgc->cell_playback[i].first_sector + 1;
767         }
768
769         msg_Dbg( p_demux, "title %d vts_title %d pgc %d pgn %d "
770                  "start %d end %d blocks: %d",
771                  i_title + 1, p_sys->i_ttn, pgc_id, pgn,
772                  p_sys->i_title_start_block, p_sys->i_title_end_block,
773                  p_sys->i_title_blocks );
774
775         /*
776          * Set properties for current chapter
777          */
778         p_sys->i_chapter = 0;
779         p_sys->i_chapters =
780             p_vts->vts_ptt_srpt->title[p_sys->i_ttn - 1].nr_of_ptts;
781
782         pgc_id = p_vts->vts_ptt_srpt->title[
783                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgcn;
784         pgn = p_vts->vts_ptt_srpt->title[
785                     p_sys->i_ttn - 1].ptt[p_sys->i_chapter].pgn;
786
787         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
788         p_sys->i_pack_len = 0;
789         p_sys->i_next_cell =
790             p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
791         DvdReadFindCell( p_demux );
792
793         p_sys->i_next_vobu = p_sys->i_cur_block =
794             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
795
796         /*
797          * Angle management
798          */
799         p_sys->i_angles = p_vmg->tt_srpt->title[i_title].nr_of_angles;
800         if( p_sys->i_angle > p_sys->i_angles ) p_sys->i_angle = 1;
801
802         /*
803          * We've got enough info, time to open the title set data.
804          */
805         if( !( p_sys->p_title = DVDOpenFile( p_sys->p_dvdread,
806             p_vmg->tt_srpt->title[i_title].title_set_nr,
807             DVD_READ_TITLE_VOBS ) ) )
808         {
809             msg_Err( p_demux, "cannot open title (VTS_%02d_1.VOB)",
810                      p_vmg->tt_srpt->title[i_title].title_set_nr );
811             return VLC_EGENERIC;
812         }
813
814         //IfoPrintTitle( p_demux );
815
816         /*
817          * Destroy obsolete ES by reinitializing program 0
818          * and find all ES in title with ifo data
819          */
820         es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
821
822         for( i = 0; i < PS_TK_COUNT; i++ )
823         {
824             ps_track_t *tk = &p_sys->tk[i];
825             if( tk->b_seen )
826             {
827                 es_format_Clean( &tk->fmt );
828                 if( tk->es ) es_out_Del( p_demux->out, tk->es );
829             }
830             tk->b_seen = false;
831         }
832
833         if( p_demux->info.i_title != i_title )
834         {
835             p_demux->info.i_update |=
836                 INPUT_UPDATE_TITLE | INPUT_UPDATE_SEEKPOINT;
837             p_demux->info.i_title = i_title;
838             p_demux->info.i_seekpoint = 0;
839         }
840
841         /* TODO: re-add angles */
842
843
844         ESNew( p_demux, 0xe0, 0 ); /* Video, FIXME ? */
845         const video_attr_t *p_attr = &p_vts->vtsi_mat->vts_video_attr;
846         int i_video_height = p_attr->video_format != 0 ? 576 : 480;
847         int i_video_width;
848         switch( p_attr->picture_size )
849         {
850         case 0:
851             i_video_width = 720;
852             break;
853         case 1:
854             i_video_width = 704;
855             break;
856         case 2:
857             i_video_width = 352;
858             break;
859         default:
860         case 3:
861             i_video_width = 352;
862             i_video_height /= 2;
863             break;
864         }
865         switch( p_attr->display_aspect_ratio )
866         {
867         case 0:
868             p_sys->i_sar_num = 4 * i_video_height;
869             p_sys->i_sar_den = 3 * i_video_width;
870             break;
871         case 3:
872             p_sys->i_sar_num = 16 * i_video_height;
873             p_sys->i_sar_den =  9 * i_video_width;
874             break;
875         default:
876             p_sys->i_sar_num = 0;
877             p_sys->i_sar_den = 0;
878             break;
879         }
880
881 #define audio_control \
882     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->audio_control[i-1]
883
884         /* Audio ES, in the order they appear in the .ifo */
885         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_audio_streams; i++ )
886         {
887             int i_position = 0;
888             uint16_t i_id;
889
890             //IfoPrintAudio( p_demux, i );
891
892             /* Audio channel is active if first byte is 0x80 */
893             if( audio_control & 0x8000 )
894             {
895                 i_position = ( audio_control & 0x7F00 ) >> 8;
896
897                 msg_Dbg( p_demux, "audio position  %d", i_position );
898                 switch( p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format )
899                 {
900                 case 0x00: /* A52 */
901                     i_id = (0x80 + i_position) | 0xbd00;
902                     break;
903                 case 0x02:
904                 case 0x03: /* MPEG audio */
905                     i_id = 0xc000 + i_position;
906                     break;
907                 case 0x04: /* LPCM */
908                     i_id = (0xa0 + i_position) | 0xbd00;
909                     break;
910                 case 0x06: /* DTS */
911                     i_id = (0x88 + i_position) | 0xbd00;
912                     break;
913                 default:
914                     i_id = 0;
915                     msg_Err( p_demux, "unknown audio type %.2x",
916                         p_vts->vtsi_mat->vts_audio_attr[i - 1].audio_format );
917                 }
918
919                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
920                        vts_audio_attr[i - 1].lang_code );
921             }
922         }
923 #undef audio_control
924
925 #define spu_palette \
926     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->palette
927
928         memcpy( p_sys->clut, spu_palette, 16 * sizeof( uint32_t ) );
929
930 #define spu_control \
931     p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id-1].pgc->subp_control[i-1]
932
933         /* Sub Picture ES */
934         for( i = 1; i <= p_vts->vtsi_mat->nr_of_vts_subp_streams; i++ )
935         {
936             int i_position = 0;
937             uint16_t i_id;
938
939             //IfoPrintSpu( p_sys, i );
940             msg_Dbg( p_demux, "spu %d 0x%02x", i, spu_control );
941
942             if( spu_control & 0x80000000 )
943             {
944                 /*  there are several streams for one spu */
945                 if( p_vts->vtsi_mat->vts_video_attr.display_aspect_ratio )
946                 {
947                     /* 16:9 */
948                     switch( p_vts->vtsi_mat->vts_video_attr.permitted_df )
949                     {
950                     case 1: /* letterbox */
951                         i_position = spu_control & 0xff;
952                         break;
953                     case 2: /* pan&scan */
954                         i_position = ( spu_control >> 8 ) & 0xff;
955                         break;
956                     default: /* widescreen */
957                         i_position = ( spu_control >> 16 ) & 0xff;
958                         break;
959                     }
960                 }
961                 else
962                 {
963                     /* 4:3 */
964                     i_position = ( spu_control >> 24 ) & 0x7F;
965                 }
966
967                 i_id = (0x20 + i_position) | 0xbd00;
968
969                 ESNew( p_demux, i_id, p_sys->p_vts_file->vtsi_mat->
970                        vts_subp_attr[i - 1].lang_code );
971             }
972         }
973 #undef spu_control
974
975     }
976     else if( i_title != -1 && i_title != p_sys->i_title )
977
978     {
979         return VLC_EGENERIC; /* Couldn't set title */
980     }
981
982     /*
983      * Chapter selection
984      */
985
986     if( i_chapter >= 0 && i_chapter < p_sys->i_chapters )
987     {
988         pgc_id = p_vts->vts_ptt_srpt->title[
989                      p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
990         pgn = p_vts->vts_ptt_srpt->title[
991                   p_sys->i_ttn - 1].ptt[i_chapter].pgn;
992
993         p_pgc = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
994
995         p_sys->i_cur_cell = p_pgc->program_map[pgn - 1] - 1;
996         p_sys->i_chapter = i_chapter;
997         DvdReadFindCell( p_demux );
998
999         p_sys->i_title_offset = 0;
1000         for( i = p_sys->i_title_start_cell; i < p_sys->i_cur_cell; i++ )
1001         {
1002             p_sys->i_title_offset += p_pgc->cell_playback[i].last_sector -
1003                 p_pgc->cell_playback[i].first_sector + 1;
1004         }
1005
1006         p_sys->i_pack_len = 0;
1007         p_sys->i_next_vobu = p_sys->i_cur_block =
1008             p_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1009
1010         if( p_demux->info.i_seekpoint != i_chapter )
1011         {
1012             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1013             p_demux->info.i_seekpoint = i_chapter;
1014         }
1015     }
1016     else if( i_chapter != -1 )
1017
1018     {
1019         return VLC_EGENERIC; /* Couldn't set chapter */
1020     }
1021
1022 #undef p_pgc
1023 #undef p_vts
1024 #undef p_vmg
1025
1026     return VLC_SUCCESS;
1027 }
1028
1029 /*****************************************************************************
1030  * DvdReadSeek : Goes to a given position on the stream.
1031  *****************************************************************************
1032  * This one is used by the input and translate chronological position from
1033  * input to logical position on the device.
1034  *****************************************************************************/
1035 static void DvdReadSeek( demux_t *p_demux, int i_block_offset )
1036 {
1037     demux_sys_t *p_sys = p_demux->p_sys;
1038     int i_chapter = 0;
1039     int i_cell = 0;
1040     int i_vobu = 0;
1041     int i_sub_cell = 0;
1042     int i_block;
1043
1044 #define p_pgc p_sys->p_cur_pgc
1045 #define p_vts p_sys->p_vts_file
1046
1047     /* Find cell */
1048     i_block = i_block_offset;
1049     for( i_cell = p_sys->i_title_start_cell;
1050          i_cell <= p_sys->i_title_end_cell; i_cell++ )
1051     {
1052         if( i_block < (int)p_pgc->cell_playback[i_cell].last_sector -
1053             (int)p_pgc->cell_playback[i_cell].first_sector + 1 ) break;
1054
1055         i_block -= (p_pgc->cell_playback[i_cell].last_sector -
1056             p_pgc->cell_playback[i_cell].first_sector + 1);
1057     }
1058     if( i_cell > p_sys->i_title_end_cell )
1059     {
1060         msg_Err( p_demux, "couldn't find cell for block %i", i_block_offset );
1061         return;
1062     }
1063     i_block += p_pgc->cell_playback[i_cell].first_sector;
1064     p_sys->i_title_offset = i_block_offset;
1065
1066     /* Find chapter */
1067     for( i_chapter = 0; i_chapter < p_sys->i_chapters; i_chapter++ )
1068     {
1069         int pgc_id, pgn, i_tmp;
1070
1071         pgc_id = p_vts->vts_ptt_srpt->title[
1072                     p_sys->i_ttn - 1].ptt[i_chapter].pgcn;
1073         pgn = p_vts->vts_ptt_srpt->title[
1074                     p_sys->i_ttn - 1].ptt[i_chapter].pgn;
1075
1076         i_tmp = p_vts->vts_pgcit->pgci_srp[pgc_id - 1].pgc->program_map[pgn-1];
1077
1078         if( i_tmp > i_cell ) break;
1079     }
1080
1081     if( i_chapter < p_sys->i_chapters &&
1082         p_demux->info.i_seekpoint != i_chapter )
1083     {
1084         p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1085         p_demux->info.i_seekpoint = i_chapter;
1086     }
1087
1088     /* Find vobu */
1089     while( (int)p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu] <= i_block )
1090     {
1091         i_vobu++;
1092     }
1093
1094     /* Find sub_cell */
1095     while( p_vts->vts_c_adt->cell_adr_table[i_sub_cell].start_sector <
1096            p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu-1] )
1097     {
1098         i_sub_cell++;
1099     }
1100
1101 #if 1
1102     msg_Dbg( p_demux, "cell %d i_sub_cell %d chapter %d vobu %d "
1103              "cell_sector %d vobu_sector %d sub_cell_sector %d",
1104              i_cell, i_sub_cell, i_chapter, i_vobu,
1105              p_sys->p_cur_pgc->cell_playback[i_cell].first_sector,
1106              p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu],
1107              p_vts->vts_c_adt->cell_adr_table[i_sub_cell - 1].start_sector);
1108 #endif
1109
1110     p_sys->i_cur_block = i_block;
1111     p_sys->i_next_vobu = p_vts->vts_vobu_admap->vobu_start_sectors[i_vobu];
1112     p_sys->i_pack_len = p_sys->i_next_vobu - i_block;
1113     p_sys->i_cur_cell = i_cell;
1114     p_sys->i_chapter = i_chapter;
1115     DvdReadFindCell( p_demux );
1116
1117 #undef p_vts
1118 #undef p_pgc
1119
1120     return;
1121 }
1122
1123 /*****************************************************************************
1124  * DvdReadHandleDSI
1125  *****************************************************************************/
1126 static void DvdReadHandleDSI( demux_t *p_demux, uint8_t *p_data )
1127 {
1128     demux_sys_t *p_sys = p_demux->p_sys;
1129
1130     navRead_DSI( &p_sys->dsi_pack, &p_data[DSI_START_BYTE] );
1131
1132     /*
1133      * Determine where we go next.  These values are the ones we mostly
1134      * care about.
1135      */
1136     p_sys->i_cur_block = p_sys->dsi_pack.dsi_gi.nv_pck_lbn;
1137     p_sys->i_pack_len = p_sys->dsi_pack.dsi_gi.vobu_ea;
1138
1139     /*
1140      * Store the timecodes so we can get the current time
1141      */
1142     p_sys->i_title_cur_time = (mtime_t) (p_sys->dsi_pack.dsi_gi.nv_pck_scr / 90 * 1000);
1143     p_sys->i_cell_cur_time = (mtime_t) dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 );
1144
1145     /*
1146      * If we're not at the end of this cell, we can determine the next
1147      * VOBU to display using the VOBU_SRI information section of the
1148      * DSI.  Using this value correctly follows the current angle,
1149      * avoiding the doubled scenes in The Matrix, and makes our life
1150      * really happy.
1151      */
1152
1153     p_sys->i_next_vobu = p_sys->i_cur_block +
1154         ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1155
1156     if( p_sys->dsi_pack.vobu_sri.next_vobu != SRI_END_OF_CELL
1157         && p_sys->i_angle > 1 )
1158     {
1159         switch( ( p_sys->dsi_pack.sml_pbi.category & 0xf000 ) >> 12 )
1160         {
1161         case 0x4:
1162             /* Interleaved unit with no angle */
1163             if( p_sys->dsi_pack.sml_pbi.ilvu_sa != 0 )
1164             {
1165                 p_sys->i_next_vobu = p_sys->i_cur_block +
1166                     p_sys->dsi_pack.sml_pbi.ilvu_sa;
1167                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1168             }
1169             else
1170             {
1171                 p_sys->i_next_vobu = p_sys->i_cur_block +
1172                     p_sys->dsi_pack.dsi_gi.vobu_ea + 1;
1173             }
1174             break;
1175         case 0x5:
1176             /* vobu is end of ilvu */
1177             if( p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address )
1178             {
1179                 p_sys->i_next_vobu = p_sys->i_cur_block +
1180                     p_sys->dsi_pack.sml_agli.data[p_sys->i_angle-1].address;
1181                 p_sys->i_pack_len = p_sys->dsi_pack.sml_pbi.ilvu_ea;
1182
1183                 break;
1184             }
1185         case 0x6:
1186             /* vobu is beginning of ilvu */
1187         case 0x9:
1188             /* next scr is 0 */
1189         case 0xa:
1190             /* entering interleaved section */
1191         case 0x8:
1192             /* non interleaved cells in interleaved section */
1193         default:
1194             p_sys->i_next_vobu = p_sys->i_cur_block +
1195                 ( p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff );
1196             break;
1197         }
1198     }
1199     else if( p_sys->dsi_pack.vobu_sri.next_vobu == SRI_END_OF_CELL )
1200     {
1201         p_sys->i_cur_cell = p_sys->i_next_cell;
1202
1203         /* End of title */
1204         if( p_sys->i_cur_cell >= p_sys->p_cur_pgc->nr_of_cells ) return;
1205
1206         DvdReadFindCell( p_demux );
1207
1208         p_sys->i_next_vobu =
1209             p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].first_sector;
1210
1211         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 );
1212     }
1213
1214
1215 #if 0
1216     msg_Dbg( p_demux, "scr %d lbn 0x%02x vobu_ea %d vob_id %d c_id %d c_time %lld",
1217              p_sys->dsi_pack.dsi_gi.nv_pck_scr,
1218              p_sys->dsi_pack.dsi_gi.nv_pck_lbn,
1219              p_sys->dsi_pack.dsi_gi.vobu_ea,
1220              p_sys->dsi_pack.dsi_gi.vobu_vob_idn,
1221              p_sys->dsi_pack.dsi_gi.vobu_c_idn,
1222              dvdtime_to_time( &p_sys->dsi_pack.dsi_gi.c_eltm, 0 ) );
1223
1224     msg_Dbg( p_demux, "cell duration: %lld",
1225              (mtime_t)dvdtime_to_time( &p_sys->p_cur_pgc->cell_playback[p_sys->i_cur_cell].playback_time, 0 ) );
1226
1227     msg_Dbg( p_demux, "cat 0x%02x ilvu_ea %d ilvu_sa %d size %d",
1228              p_sys->dsi_pack.sml_pbi.category,
1229              p_sys->dsi_pack.sml_pbi.ilvu_ea,
1230              p_sys->dsi_pack.sml_pbi.ilvu_sa,
1231              p_sys->dsi_pack.sml_pbi.size );
1232
1233     msg_Dbg( p_demux, "next_vobu %d next_ilvu1 %d next_ilvu2 %d",
1234              p_sys->dsi_pack.vobu_sri.next_vobu & 0x7fffffff,
1235              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle - 1 ].address,
1236              p_sys->dsi_pack.sml_agli.data[ p_sys->i_angle ].address);
1237 #endif
1238 }
1239
1240 /*****************************************************************************
1241  * DvdReadFindCell
1242  *****************************************************************************/
1243 static void DvdReadFindCell( demux_t *p_demux )
1244 {
1245     demux_sys_t *p_sys = p_demux->p_sys;
1246
1247     pgc_t *p_pgc;
1248     int   pgc_id, pgn;
1249     int   i = 0;
1250
1251 #define cell p_sys->p_cur_pgc->cell_playback
1252
1253     if( cell[p_sys->i_cur_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK )
1254     {
1255         p_sys->i_cur_cell += p_sys->i_angle - 1;
1256
1257         while( cell[p_sys->i_cur_cell+i].block_mode != BLOCK_MODE_LAST_CELL )
1258         {
1259             i++;
1260         }
1261         p_sys->i_next_cell = p_sys->i_cur_cell + i + 1;
1262     }
1263     else
1264     {
1265         p_sys->i_next_cell = p_sys->i_cur_cell + 1;
1266     }
1267
1268 #undef cell
1269
1270     if( p_sys->i_chapter + 1 >= p_sys->i_chapters ) return;
1271
1272     pgc_id = p_sys->p_vts_file->vts_ptt_srpt->title[
1273                 p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgcn;
1274     pgn = p_sys->p_vts_file->vts_ptt_srpt->title[
1275               p_sys->i_ttn - 1].ptt[p_sys->i_chapter + 1].pgn;
1276     p_pgc = p_sys->p_vts_file->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
1277
1278     if( p_sys->i_cur_cell >= p_pgc->program_map[pgn - 1] - 1 )
1279     {
1280         p_sys->i_chapter++;
1281
1282         if( p_sys->i_chapter < p_sys->i_chapters &&
1283             p_demux->info.i_seekpoint != p_sys->i_chapter )
1284         {
1285             p_demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
1286             p_demux->info.i_seekpoint = p_sys->i_chapter;
1287         }
1288     }
1289 }
1290
1291 /*****************************************************************************
1292  * DemuxTitles: get the titles/chapters structure
1293  *****************************************************************************/
1294 static void DemuxTitles( demux_t *p_demux, int *pi_angle )
1295 {
1296     VLC_UNUSED( pi_angle );
1297
1298     demux_sys_t *p_sys = p_demux->p_sys;
1299     input_title_t *t;
1300     seekpoint_t *s;
1301
1302     /* Find out number of titles/chapters */
1303 #define tt_srpt p_sys->p_vmg_file->tt_srpt
1304
1305     int32_t i_titles = tt_srpt->nr_of_srpts;
1306     msg_Dbg( p_demux, "number of titles: %d", i_titles );
1307
1308     for( int i = 0; i < i_titles; i++ )
1309     {
1310         int32_t i_chapters = 0;
1311         int j;
1312
1313         i_chapters = tt_srpt->title[i].nr_of_ptts;
1314         msg_Dbg( p_demux, "title %d has %d chapters", i, i_chapters );
1315
1316         t = vlc_input_title_New();
1317
1318         for( j = 0; j < __MAX( i_chapters, 1 ); j++ )
1319         {
1320             s = vlc_seekpoint_New();
1321             TAB_APPEND( t->i_seekpoint, t->seekpoint, s );
1322         }
1323
1324         TAB_APPEND( p_sys->i_titles, p_sys->titles, t );
1325     }
1326
1327 #undef tt_srpt
1328 }