1 /*****************************************************************************
2 * file.c: file input (file: access plug-in)
3 *****************************************************************************
4 * Copyright (C) 2001-2006 the VideoLAN team
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * RĂ©mi Denis-Courmont <rem # videolan # org>
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.
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.
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 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
29 #include <vlc/input.h>
30 #include <vlc_interaction.h>
35 #ifdef HAVE_SYS_TYPES_H
36 # include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
45 #if defined( WIN32 ) && !defined( UNDER_CE )
52 #if defined( WIN32 ) && !defined( UNDER_CE )
53 /* fstat() support for large files on win32 */
54 # define fstat(a,b) _fstati64(a,b)
58 # define lseek _lseeki64
59 #elif defined( UNDER_CE )
63 # define read(a,b,c) fread(b,1,c,a)
64 # define close(a) fclose(a)
73 /*****************************************************************************
75 *****************************************************************************/
76 static int Open ( vlc_object_t * );
77 static void Close( vlc_object_t * );
79 #define CACHING_TEXT N_("Caching value in ms")
80 #define CACHING_LONGTEXT N_( \
81 "Caching value for files. This " \
82 "value should be set in milliseconds." )
83 #define CAT_TEXT N_("Concatenate with additional files")
84 #define CAT_LONGTEXT N_( \
85 "Play split files as if they were part of a unique file. " \
86 "You need to specify a comma-separated list of files." )
89 set_description( _("File input") );
90 set_shortname( _("File") );
91 set_category( CAT_INPUT );
92 set_subcategory( SUBCAT_INPUT_ACCESS );
93 add_integer( "file-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
94 add_string( "file-cat", NULL, NULL, CAT_TEXT, CAT_LONGTEXT, VLC_TRUE );
95 set_capability( "access2", 50 );
96 add_shortcut( "file" );
97 add_shortcut( "stream" );
98 add_shortcut( "kfir" );
99 set_callbacks( Open, Close );
103 /*****************************************************************************
104 * Exported prototypes
105 *****************************************************************************/
106 static int Seek( access_t *, int64_t );
107 static int Read( access_t *, uint8_t *, int );
108 static int Control( access_t *, int, va_list );
110 static int _OpenFile( access_t *, const char * );
121 unsigned int i_nb_reads;
139 vlc_bool_t b_seekable;
140 vlc_bool_t b_pace_control;
143 /*****************************************************************************
144 * Open: open the file
145 *****************************************************************************/
146 static int Open( vlc_object_t *p_this )
148 access_t *p_access = (access_t*)p_this;
150 char *psz_name = strdup( p_access->psz_path );
152 #ifdef HAVE_SYS_STAT_H
153 struct stat stat_info;
155 file_entry_t * p_file;
156 vlc_bool_t b_stdin = psz_name[0] == '-' && psz_name[1] == '\0';
160 if( psz_name[0] == '~' && psz_name[1] == '/' )
164 /* This is incomplete : we should also support the ~cmassiot/
166 asprintf( &psz, "%s/%s", p_access->p_libvlc->psz_homedir, psz_name + 2 );
171 else if( !strcasecmp( p_access->psz_access, "file" )
172 && ('/' == psz_name[0]) && psz_name[1]
173 && (':' == psz_name[2]) && ('/' == psz_name[3]) )
176 ** explorer can open path such as file:/C:/ or file:///C:/...
177 ** hence remove leading / if found
179 strcpy( psz_name, p_access->psz_path + 1 );
184 STANDARD_READ_ACCESS_INIT;
185 p_sys->i_nb_reads = 0;
186 p_sys->b_kfir = VLC_FALSE;
194 msg_Dbg( p_access, "opening file `%s'", psz_name );
199 _OpenFile( p_access, psz_name );
203 if( p_sys->fd == -1 )
209 #ifdef HAVE_SYS_STAT_H
210 if( fstat( p_sys->fd, &stat_info ) )
212 msg_Err( p_access, "%s: %s", p_access->psz_path, strerror( errno ) );
219 if( !strcasecmp( p_access->psz_access, "stream" ) )
221 p_sys->b_seekable = VLC_FALSE;
222 p_sys->b_pace_control = VLC_FALSE;
224 else if( !strcasecmp( p_access->psz_access, "kfir" ) )
226 p_sys->b_seekable = VLC_FALSE;
227 p_sys->b_pace_control = VLC_FALSE;
228 p_sys->b_kfir = VLC_TRUE;
233 p_sys->b_pace_control = VLC_TRUE;
236 p_sys->b_seekable = VLC_FALSE;
238 #if defined( HAVE_SYS_STAT_H )
239 if( S_ISREG(stat_info.st_mode) || S_ISBLK(stat_info.st_mode)
240 || ( S_ISCHR(stat_info.st_mode) && (stat_info.st_size > 0) ) )
242 p_sys->b_seekable = VLC_TRUE;
243 p_access->info.i_size = stat_info.st_size;
246 p_sys->b_seekable = VLC_FALSE;
248 /* We'll update i_size after it's been opened */
249 p_sys->b_seekable = VLC_TRUE;
253 if( p_sys->b_seekable && !p_access->info.i_size )
255 /* FIXME that's bad because all others access will be probed */
256 msg_Err( p_access, "file %s is empty, aborting", psz_name );
262 /* Update default_pts to a suitable value for file access */
263 var_Create( p_access, "file-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
266 * Get the additional list of files
268 p_file = malloc( sizeof(file_entry_t) );
269 p_file->i_size = p_access->info.i_size;
270 p_file->psz_name = psz_name;
271 TAB_APPEND( p_sys->i_file, p_sys->file, p_file );
273 psz_name = var_CreateGetString( p_access, "file-cat" );
276 char *psz_parser = psz_name;
279 while( psz_name && *psz_name )
281 psz_parser = strchr( psz_name, ',' );
282 if( psz_parser ) *psz_parser = 0;
284 psz_name = strdup( psz_name );
287 msg_Dbg( p_access, "adding file `%s'", psz_name );
290 #ifdef HAVE_SYS_STAT_H
291 if( !stat( psz_name, &stat_info ) )
293 p_access->info.i_size += stat_info.st_size;
294 i_size = stat_info.st_size;
298 msg_Dbg( p_access, "cannot stat() file `%s'", psz_name );
301 p_file = malloc( sizeof(file_entry_t) );
302 p_file->i_size = i_size;
303 p_file->psz_name = psz_name;
305 TAB_APPEND( p_sys->i_file, p_sys->file, p_file );
308 psz_name = psz_parser;
309 if( psz_name ) psz_name++;
317 /*****************************************************************************
318 * Close: close the target
319 *****************************************************************************/
320 static void Close( vlc_object_t * p_this )
322 access_t *p_access = (access_t*)p_this;
323 access_sys_t *p_sys = p_access->p_sys;
328 for( i = 0; i < p_sys->i_file; i++ )
330 free( p_sys->file[i]->psz_name );
331 free( p_sys->file[i] );
338 /*****************************************************************************
339 * Read: standard read on a file descriptor.
340 *****************************************************************************/
341 static int Read( access_t *p_access, uint8_t *p_buffer, int i_len )
343 access_sys_t *p_sys = p_access->p_sys;
346 #if !defined(WIN32) && !defined(UNDER_CE)
347 if( !p_sys->b_pace_control )
351 /* Find if some data is available. This won't work under Windows. */
356 if( p_access->b_die )
359 memset (&ufd, 0, sizeof (ufd));
363 i_ret = poll( &ufd, 1, 500 );
368 msg_Err( p_access, "poll error: %s",
377 i_ret = read( p_sys->fd, p_buffer, i_len );
381 /* b_kfir ; work around a buggy poll() driver implementation */
382 while ( (i_ret = read( p_sys->fd, p_buffer, i_len )) == 0 &&
385 msleep( INPUT_ERROR_SLEEP );
390 #endif /* WIN32 || UNDER_CE */
392 /* b_pace_control || WIN32 */
393 i_ret = read( p_sys->fd, p_buffer, i_len );
398 if( errno != EINTR && errno != EAGAIN )
400 msg_Err( p_access, "read failed (%s)", strerror(errno) );
401 intf_UserFatal( p_access, VLC_FALSE, _("File reading failed"),
402 _("VLC could not read file \"%s\"."),
406 /* Delay a bit to avoid consuming all the CPU. This is particularly
407 * useful when reading from an unconnected FIFO. */
408 msleep( INPUT_ERROR_SLEEP );
412 #ifdef HAVE_SYS_STAT_H
413 if( p_access->info.i_size != 0 &&
414 (p_sys->i_nb_reads % INPUT_FSTAT_NB_READS) == 0 )
416 struct stat stat_info;
417 int i_file = p_sys->i_index;
419 if ( fstat( p_sys->fd, &stat_info ) == -1 )
421 msg_Warn( p_access, "couldn't stat again the file (%s)", strerror(errno) );
423 else if ( p_sys->file[i_file]->i_size != stat_info.st_size )
425 p_access->info.i_size += (stat_info.st_size - p_sys->file[i_file]->i_size );
426 p_sys->file[i_file]->i_size = stat_info.st_size;
427 p_access->info.i_update |= INPUT_UPDATE_SIZE;
432 /* If we reached an EOF then switch to the next file in the list */
433 if ( i_ret == 0 && p_sys->i_index + 1 < p_sys->i_file )
435 char *psz_name = p_sys->file[++p_sys->i_index]->psz_name;
436 p_sys->fd_backup = p_sys->fd;
438 msg_Dbg( p_access, "opening file `%s'", psz_name );
440 if ( _OpenFile( p_access, psz_name ) )
442 p_sys->fd = p_sys->fd_backup;
446 close( p_sys->fd_backup );
448 /* We have to read some data */
449 return Read( p_access, p_buffer, i_len );
453 p_access->info.i_pos += i_ret;
454 else if( i_ret == 0 )
455 p_access->info.b_eof = VLC_TRUE;
460 /*****************************************************************************
461 * Seek: seek to a specific location in a file
462 *****************************************************************************/
463 static int Seek( access_t *p_access, int64_t i_pos )
465 access_sys_t *p_sys = p_access->p_sys;
468 /* Check which file we need to access */
469 if( p_sys->i_file > 1 )
473 p_sys->fd_backup = p_sys->fd;
475 for( i = 0; i < p_sys->i_file - 1; i++ )
477 if( i_pos < p_sys->file[i]->i_size + i_size )
479 i_size += p_sys->file[i]->i_size;
481 psz_name = p_sys->file[i]->psz_name;
483 msg_Dbg( p_access, "opening file `%s'", psz_name );
485 if ( i != p_sys->i_index && !_OpenFile( p_access, psz_name ) )
488 close( p_sys->fd_backup );
493 p_sys->fd = p_sys->fd_backup;
497 lseek( p_sys->fd, i_pos - i_size, SEEK_SET );
499 p_access->info.i_pos = i_pos;
500 if( p_access->info.i_size < p_access->info.i_pos )
502 msg_Err( p_access, "seeking too far" );
503 p_access->info.i_pos = p_access->info.i_size;
505 else if( p_access->info.i_pos < 0 )
507 msg_Err( p_access, "seeking too early" );
508 p_access->info.i_pos = 0;
511 p_access->info.b_eof = VLC_FALSE;
517 /*****************************************************************************
519 *****************************************************************************/
520 static int Control( access_t *p_access, int i_query, va_list args )
522 access_sys_t *p_sys = p_access->p_sys;
530 case ACCESS_CAN_SEEK:
531 case ACCESS_CAN_FASTSEEK:
532 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
533 *pb_bool = p_sys->b_seekable;
536 case ACCESS_CAN_PAUSE:
537 case ACCESS_CAN_CONTROL_PACE:
538 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
539 *pb_bool = p_sys->b_pace_control;
544 pi_int = (int*)va_arg( args, int * );
548 case ACCESS_GET_PTS_DELAY:
549 pi_64 = (int64_t*)va_arg( args, int64_t * );
550 *pi_64 = var_GetInteger( p_access, "file-caching" ) * I64C(1000);
554 case ACCESS_SET_PAUSE_STATE:
558 case ACCESS_GET_TITLE_INFO:
559 case ACCESS_SET_TITLE:
560 case ACCESS_SET_SEEKPOINT:
561 case ACCESS_SET_PRIVATE_ID_STATE:
562 case ACCESS_GET_META:
566 msg_Warn( p_access, "unimplemented query in control" );
574 /*****************************************************************************
575 * OpenFile: Opens a specific file
576 *****************************************************************************/
577 static int _OpenFile( access_t * p_access, const char * psz_name )
579 access_sys_t *p_sys = p_access->p_sys;
582 p_sys->fd = utf8_fopen( psz_name, "rb" );
585 msg_Err( p_access, "cannot open file %s", psz_name );
586 intf_UserFatal( p_access, VLC_FALSE, _("File reading failed"),
587 _("VLC could not open file \"%s\"."), psz_name );
591 fseek( p_sys->fd, 0, SEEK_END );
592 p_access->info.i_size = ftell( p_sys->fd );
593 p_access->info.i_update |= INPUT_UPDATE_SIZE;
594 fseek( p_sys->fd, 0, SEEK_SET );
596 const char *psz_localname = ToLocale( psz_name );
597 if( psz_localname == NULL )
599 msg_Err( p_access, "incorrect file name %s", psz_name );
603 // FIXME: support non-ANSI filenames on Win32
604 p_sys->fd = open( psz_localname, O_NONBLOCK /*| O_LARGEFILE*/ );
605 LocaleFree( psz_localname );
607 if ( p_sys->fd == -1 )
609 msg_Err( p_access, "cannot open file %s (%s)", psz_name,
611 intf_UserFatal( p_access, VLC_FALSE, _("File reading failed"),
612 _("VLC could not open file \"%s\" (%s)."),
613 psz_name, strerror(errno) );
617 #if defined(HAVE_FCNTL_H) && defined(F_FDAHEAD) && defined(F_NOCACHE)
618 /* We'd rather use any available memory for reading ahead
619 * than for caching what we've already seen/heard */
620 fcntl(p_sys->fd, F_RDAHEAD, 1);
621 fcntl(p_sys->fd, F_NOCACHE, 1);