1 /*****************************************************************************
2 * vdr.c: VDR recordings access plugin
3 *****************************************************************************
4 * Copyright (C) 2010 Tobias Güntner
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
19 *****************************************************************************/
22 VDR splits recordings into multiple files and stores each recording in a
23 separate directory. If VLC opens a normal directory, the filesystem module
24 will add all files to the playlist. If, however, VLC opens a VDR recording,
25 this module will join all files within that directory and provide a single
26 continuous stream instead.
28 VDR recordings have either of two directory layouts:
30 /path/to/0000-00-00.00.00.00.00.rec/
31 001.vdr, 002.vdr, 003.vdr, ...
32 index.vdr, info.vdr, marks.vdr, ...
34 /path/to/0000-00-00.00.00.0-0.rec/
35 00001.ts, 00002.ts, 00003.ts, ...
36 index, info, marks, ...
37 See http://www.vdr-wiki.de/ and http://www.tvdr.de/ for more information.
40 /*****************************************************************************
42 *****************************************************************************/
48 #ifdef HAVE_SYS_TYPES_H
49 # include <sys/types.h>
51 #ifdef HAVE_SYS_STAT_H
52 # include <sys/stat.h>
59 #elif defined( WIN32 ) && !defined( UNDER_CE )
67 #if defined( WIN32 ) && !defined( UNDER_CE )
69 # define lseek _lseeki64
72 #include <vlc_common.h>
73 #include <vlc_plugin.h>
74 #include <vlc_access.h>
75 #include <vlc_input.h>
77 #include <vlc_charset.h>
78 #include <vlc_dialog.h>
79 #include <vlc_configuration.h>
81 /*****************************************************************************
83 *****************************************************************************/
84 static int Open ( vlc_object_t * );
85 static void Close( vlc_object_t * );
87 #define HELP_TEXT N_("Support for VDR recordings (http://www.tvdr.de/).")
89 #define CHAPTER_OFFSET_TEXT N_("Chapter offset in ms")
90 #define CHAPTER_OFFSET_LONGTEXT N_( \
91 "Move all chapters. This value should be set in milliseconds." )
93 #define FPS_TEXT N_("Frame rate")
94 #define FPS_LONGTEXT N_( \
95 "Default frame rate for chapter import." )
98 set_category( CAT_INPUT )
99 set_shortname( N_("VDR") )
100 set_help( HELP_TEXT )
101 set_subcategory( SUBCAT_INPUT_ACCESS )
102 set_description( N_("VDR recordings") )
103 add_integer( "vdr-chapter-offset", 0,
104 CHAPTER_OFFSET_TEXT, CHAPTER_OFFSET_LONGTEXT, true )
105 add_float_with_range( "vdr-fps", 25, 1, 1000,
106 FPS_TEXT, FPS_LONGTEXT, true )
107 set_capability( "access", 60 )
108 add_shortcut( "vdr" )
109 add_shortcut( "directory" )
110 add_shortcut( "dir" )
111 add_shortcut( "file" )
112 set_callbacks( Open, Close )
115 /*****************************************************************************
116 * Local prototypes, constants, structures
117 *****************************************************************************/
119 /* minimum chapter size in seconds */
120 #define MIN_CHAPTER_SIZE 5
122 TYPEDEF_ARRAY( uint64_t, size_array_t );
126 /* file sizes of all parts */
127 size_array_t file_sizes;
129 /* index and fd of current open file */
130 unsigned i_current_file;
137 input_title_t *p_marks;
140 /* file format: true=TS, false=PES */
144 #define CURRENT_FILE_SIZE ARRAY_VAL(p_sys->file_sizes, p_sys->i_current_file)
145 #define FILE_SIZE(pos) ARRAY_VAL(p_sys->file_sizes, pos)
146 #define FILE_COUNT (unsigned)p_sys->file_sizes.i_size
148 static int Control( access_t *, int, va_list );
149 static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len );
150 static int Seek( access_t *p_access, uint64_t i_pos);
151 static void FindSeekpoint( access_t *p_access );
152 static bool ScanDirectory( access_t *p_access );
153 static char *GetFilePath( access_t *p_access, unsigned i_file );
154 static bool ImportNextFile( access_t *p_access );
155 static bool SwitchFile( access_t *p_access, unsigned i_file );
156 static void OptimizeForRead( int fd );
157 static void UpdateFileSize( access_t *p_access );
158 static FILE *OpenRelativeFile( access_t *p_access, const char *psz_file );
159 static bool ReadLine( char **ppsz_line, size_t *pi_size, FILE *p_file );
160 static void ImportMeta( access_t *p_access );
161 static void ImportMarks( access_t *p_access );
162 static bool ReadIndexRecord( FILE *p_file, bool b_ts, int64_t i_frame,
163 uint64_t *pi_offset, uint16_t *pi_file_num );
164 static int64_t ParseFrameNumber( const char *psz_line, float fps );
165 static const char *BaseName( const char *psz_path );
167 /*****************************************************************************
169 *****************************************************************************/
170 static int Open( vlc_object_t *p_this )
172 access_t *p_access = (access_t*)p_this;
174 if( !p_access->psz_filepath )
177 /* Some tests can be skipped if this module was explicitly requested.
178 * That way, the user can play "corrupt" recordings if necessary
179 * and we can avoid false positives in the general case. */
180 bool b_strict = strcmp( p_access->psz_access, "vdr" );
182 /* Do a quick test based on the directory name to see if this
183 * directory might contain a VDR recording. We can be reasonably
184 * sure if ScanDirectory() actually finds files. */
187 char psz_extension[4];
189 const char *psz_name = BaseName( p_access->psz_filepath );
190 if( sscanf( psz_name, "%*u-%*u-%*u.%*u.%*u.%*u%*[-.]%*u.%3s%n",
191 psz_extension, &i_length ) != 1 || strcasecmp( psz_extension, "rec" ) ||
192 ( psz_name[i_length] != DIR_SEP_CHAR && psz_name[i_length] != '\0' ) )
196 /* Only directories can be recordings */
198 if( vlc_stat( p_access->psz_filepath, &st ) ||
199 !S_ISDIR( st.st_mode ) )
203 STANDARD_READ_ACCESS_INIT;
205 p_sys->fps = var_InheritFloat( p_access, "vdr-fps" );
206 ARRAY_INIT( p_sys->file_sizes );
208 /* Import all files and prepare playback. */
209 if( !ScanDirectory( p_access ) ||
210 !SwitchFile( p_access, 0 ) )
219 /*****************************************************************************
220 * Close files and free resources
221 *****************************************************************************/
222 static void Close( vlc_object_t * p_this )
224 access_t *p_access = (access_t*)p_this;
225 access_sys_t *p_sys = p_access->p_sys;
227 if( p_sys->fd != -1 )
229 ARRAY_RESET( p_sys->file_sizes );
232 vlc_meta_Delete( p_sys->p_meta );
234 vlc_input_title_Delete( p_sys->p_marks );
238 /*****************************************************************************
239 * Determine format and import files
240 *****************************************************************************/
241 static bool ScanDirectory( access_t *p_access )
243 access_sys_t *p_sys = p_access->p_sys;
245 /* find first part and determine directory format */
246 p_sys->b_ts_format = true;
247 if( !ImportNextFile( p_access ) )
249 p_sys->b_ts_format = !p_sys->b_ts_format;
250 if( !ImportNextFile( p_access ) )
254 /* get all remaining parts */
255 while( ImportNextFile( p_access ) )
258 /* import meta data etc. */
259 ImportMeta( p_access );
261 /* cut marks depend on meta data and file sizes */
262 ImportMarks( p_access );
267 /*****************************************************************************
268 * Control input stream
269 *****************************************************************************/
270 static int Control( access_t *p_access, int i_query, va_list args )
272 access_sys_t *p_sys = p_access->p_sys;
273 input_title_t ***ppp_title;
280 case ACCESS_CAN_SEEK:
281 case ACCESS_CAN_FASTSEEK:
282 case ACCESS_CAN_PAUSE:
283 case ACCESS_CAN_CONTROL_PACE:
284 *va_arg( args, bool* ) = true;
287 case ACCESS_GET_PTS_DELAY:
288 pi64 = va_arg( args, int64_t * );
289 *pi64 = INT64_C(1000)
290 * var_InheritInteger( p_access, "file-caching" );
293 case ACCESS_SET_PAUSE_STATE:
297 case ACCESS_GET_TITLE_INFO:
298 /* return a copy of our seek points */
299 if( !p_sys->p_marks )
301 ppp_title = va_arg( args, input_title_t*** );
302 *va_arg( args, int* ) = 1;
303 *ppp_title = malloc( sizeof( input_title_t** ) );
306 **ppp_title = vlc_input_title_Duplicate( p_sys->p_marks );
309 case ACCESS_SET_TITLE:
310 /* ignore - only one title */
313 case ACCESS_SET_SEEKPOINT:
314 i = va_arg( args, int );
315 /* Seek updates p_access->info */
316 return Seek( p_access, p_sys->p_marks->seekpoint[i]->i_byte_offset );
318 case ACCESS_GET_META:
321 p_meta = va_arg( args, vlc_meta_t* );
322 vlc_meta_Merge( p_meta, p_sys->p_meta );
325 case ACCESS_SET_PRIVATE_ID_STATE:
326 case ACCESS_GET_CONTENT_TYPE:
330 msg_Warn( p_access, "unimplemented query in control" );
336 /*****************************************************************************
337 * Read and concatenate files
338 *****************************************************************************/
339 static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len )
341 access_sys_t *p_sys = p_access->p_sys;
343 if( p_sys->fd == -1 )
346 p_access->info.b_eof = true;
350 ssize_t i_ret = read( p_sys->fd, p_buffer, i_len );
355 p_access->info.i_pos += i_ret;
356 UpdateFileSize( p_access );
357 FindSeekpoint( p_access );
360 else if( i_ret == 0 )
362 /* check for new files in case the recording is still active */
363 if( p_sys->i_current_file >= FILE_COUNT - 1 )
364 ImportNextFile( p_access );
366 SwitchFile( p_access, p_sys->i_current_file + 1 );
369 else if( errno == EINTR )
371 /* try again later */
376 /* abort on read error */
377 msg_Err( p_access, "failed to read (%m)" );
378 dialog_Fatal( p_access, _("File reading failed"), "%s (%m)",
379 _("VLC could not read the file.") );
380 SwitchFile( p_access, -1 );
385 /*****************************************************************************
386 * Seek to a specific location in a file
387 *****************************************************************************/
388 static int Seek( access_t *p_access, uint64_t i_pos )
390 access_sys_t *p_sys = p_access->p_sys;
392 /* might happen if called by ACCESS_SET_SEEKPOINT */
393 i_pos = __MIN( i_pos, p_access->info.i_size );
395 p_access->info.i_pos = i_pos;
396 p_access->info.b_eof = false;
398 /* find correct chapter */
399 FindSeekpoint( p_access );
401 /* find correct file */
403 while( i_file < FILE_COUNT - 1 &&
404 i_pos >= FILE_SIZE( i_file ) )
406 i_pos -= FILE_SIZE( i_file );
409 if( !SwitchFile( p_access, i_file ) )
412 /* adjust position within that file */
413 return lseek( p_sys->fd, i_pos, SEEK_SET ) != -1 ?
414 VLC_SUCCESS : VLC_EGENERIC;
417 /*****************************************************************************
418 * Change the chapter index to match the current position
419 *****************************************************************************/
420 static void FindSeekpoint( access_t *p_access )
422 access_sys_t *p_sys = p_access->p_sys;
423 if( !p_sys->p_marks )
426 int i_new_seekpoint = p_access->info.i_seekpoint;
427 if( p_access->info.i_pos < (uint64_t)p_sys->p_marks->
428 seekpoint[ p_access->info.i_seekpoint ]->i_byte_offset )
430 /* i_pos moved backwards, start fresh */
434 /* only need to check the following seekpoints */
435 while( i_new_seekpoint + 1 < p_sys->p_marks->i_seekpoint &&
436 p_access->info.i_pos >= (uint64_t)p_sys->p_marks->
437 seekpoint[ i_new_seekpoint + 1 ]->i_byte_offset )
442 /* avoid unnecessary events */
443 if( p_access->info.i_seekpoint != i_new_seekpoint )
445 p_access->info.i_seekpoint = i_new_seekpoint;
446 p_access->info.i_update |= INPUT_UPDATE_SEEKPOINT;
450 /*****************************************************************************
451 * Returns the path of a certain part
452 *****************************************************************************/
453 static char *GetFilePath( access_t *p_access, unsigned i_file )
456 if( asprintf( &psz_path, p_access->p_sys->b_ts_format ?
457 "%s" DIR_SEP "%05u.ts" : "%s" DIR_SEP "%03u.vdr",
458 p_access->psz_filepath, i_file + 1 ) == -1 )
464 /*****************************************************************************
465 * Check if another part exists and import it
466 *****************************************************************************/
467 static bool ImportNextFile( access_t *p_access )
469 access_sys_t *p_sys = p_access->p_sys;
471 char *psz_path = GetFilePath( p_access, FILE_COUNT );
476 if( vlc_stat( psz_path, &st ) )
478 msg_Dbg( p_access, "could not stat %s: %m", psz_path );
482 if( !S_ISREG( st.st_mode ) )
484 msg_Dbg( p_access, "%s is not a regular file", psz_path );
488 msg_Dbg( p_access, "%s exists", psz_path );
491 ARRAY_APPEND( p_sys->file_sizes, st.st_size );
492 p_access->info.i_size += st.st_size;
493 p_access->info.i_update |= INPUT_UPDATE_SIZE;
498 /*****************************************************************************
499 * Close the current file and open another
500 *****************************************************************************/
501 static bool SwitchFile( access_t *p_access, unsigned i_file )
503 access_sys_t *p_sys = p_access->p_sys;
505 /* requested file already open? */
506 if( p_sys->fd != -1 && p_sys->i_current_file == i_file )
510 if( p_sys->fd != -1 )
517 if( i_file >= FILE_COUNT )
519 p_sys->i_current_file = i_file;
522 char *psz_path = GetFilePath( p_access, i_file );
525 p_sys->fd = vlc_open( psz_path, O_RDONLY );
527 if( p_sys->fd == -1 )
529 msg_Err( p_access, "Failed to open %s: %m", psz_path );
533 /* cannot handle anything except normal files */
535 if( fstat( p_sys->fd, &st ) || !S_ISREG( st.st_mode ) )
537 msg_Err( p_access, "%s is not a regular file", psz_path );
541 OptimizeForRead( p_sys->fd );
543 msg_Dbg( p_access, "opened %s", psz_path );
548 dialog_Fatal (p_access, _("File reading failed"), _("VLC could not"
549 " open the file \"%s\". (%m)"), psz_path);
550 if( p_sys->fd != -1 )
559 /*****************************************************************************
560 * Some tweaks to speed up read()
561 *****************************************************************************/
562 static void OptimizeForRead( int fd )
564 /* cf. Open() in file access module */
566 #ifdef HAVE_POSIX_FADVISE
567 posix_fadvise( fd, 0, 4096, POSIX_FADV_WILLNEED );
568 posix_fadvise( fd, 0, 0, POSIX_FADV_NOREUSE );
572 fcntl( fd, F_RDAHEAD, 1 );
575 fcntl( fd, F_NOCACHE, 1 );
580 /*****************************************************************************
581 * Fix size if the (last) part is still growing
582 *****************************************************************************/
583 static void UpdateFileSize( access_t *p_access )
585 access_sys_t *p_sys = p_access->p_sys;
588 if( p_access->info.i_size >= p_access->info.i_pos )
591 /* TODO: not sure if this can happen or what to do in this case */
592 if( fstat( p_sys->fd, &st ) )
594 if( (uint64_t)st.st_size <= CURRENT_FILE_SIZE )
597 p_access->info.i_size -= CURRENT_FILE_SIZE;
598 CURRENT_FILE_SIZE = st.st_size;
599 p_access->info.i_size += CURRENT_FILE_SIZE;
600 p_access->info.i_update |= INPUT_UPDATE_SIZE;
603 /*****************************************************************************
604 * Open file relative to base directory for reading.
605 *****************************************************************************/
606 static FILE *OpenRelativeFile( access_t *p_access, const char *psz_file )
608 /* build path and add extension */
610 if( asprintf( &psz_path, "%s" DIR_SEP "%s%s",
611 p_access->psz_filepath, psz_file,
612 p_access->p_sys->b_ts_format ? "" : ".vdr" ) == -1 )
615 FILE *file = vlc_fopen( psz_path, "rb" );
617 msg_Warn( p_access, "Failed to open %s: %m", psz_path );
623 /*****************************************************************************
624 * Read a line of text. Returns false on error or EOF.
625 *****************************************************************************/
626 static bool ReadLine( char **ppsz_line, size_t *pi_size, FILE *p_file )
628 ssize_t read = getline( ppsz_line, pi_size, p_file );
632 /* automatically free buffer on eof */
638 if( read > 0 && (*ppsz_line)[ read - 1 ] == '\n' )
639 (*ppsz_line)[ read - 1 ] = '\0';
640 EnsureUTF8( *ppsz_line );
645 /*****************************************************************************
647 *****************************************************************************/
648 static void ImportMeta( access_t *p_access )
650 access_sys_t *p_sys = p_access->p_sys;
652 FILE *infofile = OpenRelativeFile( p_access, "info" );
656 vlc_meta_t *p_meta = vlc_meta_New();
657 p_sys->p_meta = p_meta;
666 char *psz_title = NULL, *psz_smalltext = NULL, *psz_date = NULL;
668 while( ReadLine( &line, &line_len, infofile ) )
670 if( !isalpha( (unsigned char)line[0] ) || line[1] != ' ' )
674 char *text = line + 2;
678 char *psz_name = strchr( text, ' ' );
682 vlc_meta_AddExtra( p_meta, "Channel", psz_name + 1 );
684 vlc_meta_AddExtra( p_meta, "Transponder", text );
687 else if( tag == 'E' )
689 unsigned i_id, i_start, i_length;
690 if( sscanf( text, "%u %u %u", &i_id, &i_start, &i_length ) == 3 )
694 time_t start = i_start;
695 localtime_r( &start, &tm );
698 strftime( str, sizeof(str), "%Y-%m-%d %H:%M", &tm );
699 vlc_meta_AddExtra( p_meta, "Date", str );
701 psz_date = strdup( str );
703 /* display in minutes */
704 i_length = ( i_length + 59 ) / 60;
705 snprintf( str, sizeof(str), "%u:%02u", i_length / 60, i_length % 60 );
706 vlc_meta_AddExtra( p_meta, "Duration", str );
710 else if( tag == 'T' )
713 psz_title = strdup( text );
714 vlc_meta_AddExtra( p_meta, "Title", text );
717 else if( tag == 'S' )
719 free( psz_smalltext );
720 psz_smalltext = strdup( text );
721 vlc_meta_AddExtra( p_meta, "Info", text );
724 else if( tag == 'D' )
726 for( char *p = text; *p; ++p )
731 vlc_meta_SetDescription( p_meta, text );
734 /* FPS are required to convert between timestamps and frames */
735 else if( tag == 'F' )
737 float fps = atof( text );
740 vlc_meta_AddExtra( p_meta, "Frame Rate", text );
743 else if( tag == 'P' )
745 vlc_meta_AddExtra( p_meta, "Priority", text );
748 else if( tag == 'L' )
750 vlc_meta_AddExtra( p_meta, "Lifetime", text );
754 /* create a meaningful title */
756 ( psz_title ? strlen( psz_title ) : 0 ) +
757 ( psz_smalltext ? strlen( psz_smalltext ) : 0 ) +
758 ( psz_date ? strlen( psz_date ) : 0 );
759 char *psz_display = malloc( i_len );
765 strcat( psz_display, psz_title );
766 if( psz_title && psz_smalltext )
767 strcat( psz_display, " - " );
769 strcat( psz_display, psz_smalltext );
770 if( ( psz_title || psz_smalltext ) && psz_date )
772 strcat( psz_display, " (" );
773 strcat( psz_display, psz_date );
774 strcat( psz_display, ")" );
777 vlc_meta_SetTitle( p_meta, psz_display );
782 free( psz_smalltext );
788 /*****************************************************************************
789 * Import cut marks and convert them to seekpoints (chapters).
790 *****************************************************************************/
791 static void ImportMarks( access_t *p_access )
793 access_sys_t *p_sys = p_access->p_sys;
795 FILE *marksfile = OpenRelativeFile( p_access, "marks" );
799 FILE *indexfile = OpenRelativeFile( p_access, "index" );
806 /* get the length of this recording (index stores 8 bytes per frame) */
808 if( fstat( fileno( indexfile ), &st ) )
814 int64_t i_frame_count = st.st_size / 8;
816 /* Put all cut marks in a "dummy" title */
817 input_title_t *p_marks = vlc_input_title_New();
824 p_marks->psz_name = strdup( _("VDR Cut Marks") );
825 p_marks->i_length = i_frame_count * (int64_t)( CLOCK_FREQ / p_sys->fps );
826 p_marks->i_size = p_access->info.i_size;
828 /* offset for chapter positions */
829 int i_chapter_offset = p_sys->fps / 1000 *
830 var_InheritInteger( p_access, "vdr-chapter-offset" );
832 /* minimum chapter size in frames */
833 int i_min_chapter_size = p_sys->fps * MIN_CHAPTER_SIZE;
835 /* the last chapter started at this frame (init to 0 so
836 * we skip useless chapters near the beginning as well) */
837 int64_t i_prev_chapter = 0;
839 /* parse lines of the form "0:00:00.00 foobar" */
842 while( ReadLine( &line, &line_len, marksfile ) )
844 int64_t i_frame = ParseFrameNumber( line, p_sys->fps );
846 /* skip chapters which are near the end or too close to each other */
847 if( i_frame - i_prev_chapter < i_min_chapter_size ||
848 i_frame >= i_frame_count - i_min_chapter_size )
850 i_prev_chapter = i_frame;
852 /* move chapters (simple workaround for inaccurate cut marks) */
853 if( i_frame > -i_chapter_offset )
854 i_frame += i_chapter_offset;
859 uint16_t i_file_number;
860 if( !ReadIndexRecord( indexfile, p_sys->b_ts_format,
861 i_frame, &i_offset, &i_file_number ) )
863 if( i_file_number < 1 || i_file_number > FILE_COUNT )
866 /* add file sizes to get the "global" offset */
867 seekpoint_t *sp = vlc_seekpoint_New();
870 sp->i_time_offset = i_frame * (int64_t)( CLOCK_FREQ / p_sys->fps );
871 sp->i_byte_offset = i_offset;
872 for( int i = 0; i + 1 < i_file_number; ++i )
873 sp->i_byte_offset += FILE_SIZE( i );
874 sp->psz_name = strdup( line );
876 TAB_APPEND( p_marks->i_seekpoint, p_marks->seekpoint, sp );
879 /* add a chapter at the beginning if missing */
880 if( p_marks->i_seekpoint > 0 && p_marks->seekpoint[0]->i_byte_offset > 0 )
882 seekpoint_t *sp = vlc_seekpoint_New();
885 sp->i_byte_offset = 0;
886 sp->i_time_offset = 0;
887 sp->psz_name = strdup( _("Start") );
888 TAB_INSERT( p_marks->i_seekpoint, p_marks->seekpoint, sp, 0 );
892 if( p_marks->i_seekpoint > 0 )
893 p_sys->p_marks = p_marks;
895 vlc_input_title_Delete( p_marks );
901 /*****************************************************************************
902 * Lookup frame offset in index file
903 *****************************************************************************/
904 static bool ReadIndexRecord( FILE *p_file, bool b_ts, int64_t i_frame,
905 uint64_t *pi_offset, uint16_t *pi_file_num )
907 uint8_t index_record[8];
908 if( fseek( p_file, sizeof(index_record) * i_frame, SEEK_SET ) != 0 )
910 if( fread( &index_record, sizeof(index_record), 1, p_file ) <= 0 )
913 /* VDR usually (only?) runs on little endian machines, but VLC has a
914 * broader audience. See recording.* in VDR source for data layout. */
917 uint64_t i_index_entry = GetQWLE( &index_record );
918 *pi_offset = i_index_entry & UINT64_C(0xFFFFFFFFFF);
919 *pi_file_num = i_index_entry >> 48;
923 *pi_offset = GetDWLE( &index_record );
924 *pi_file_num = index_record[5];
930 /*****************************************************************************
931 * Convert time stamp from file to frame number
932 *****************************************************************************/
933 static int64_t ParseFrameNumber( const char *psz_line, float fps )
935 unsigned h, m, s, f, n;
937 /* hour:min:sec.frame (frame is optional) */
938 n = sscanf( psz_line, "%u:%u:%u.%u", &h, &m, &s, &f );
943 int64_t i_seconds = (int64_t)h * 3600 + (int64_t)m * 60 + s;
944 return (int64_t)( i_seconds * (double)fps ) + __MAX(1, f) - 1;
947 /* only a frame number */
948 int64_t i_frame = strtoll( psz_line, NULL, 10 );
949 return __MAX(1, i_frame) - 1;
952 /*****************************************************************************
953 * Return the last path component (including trailing separators)
954 *****************************************************************************/
955 static const char *BaseName( const char *psz_path )
957 const char *psz_name = psz_path + strlen( psz_path );
959 /* skip superfluous separators at the end */
960 while( psz_name > psz_path && psz_name[-1] == DIR_SEP_CHAR )
963 /* skip last component */
964 while( psz_name > psz_path && psz_name[-1] != DIR_SEP_CHAR )