1 /*****************************************************************************
2 * file.c: file input (file: access plug-in)
3 *****************************************************************************
4 * Copyright (C) 2001-2006 the VideoLAN team
5 * Copyright © 2006 Rémi Denis-Courmont
8 * Authors: Christophe Massiot <massiot@via.ecp.fr>
9 * Rémi Denis-Courmont <rem # videolan # org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
30 #include <vlc/input.h>
31 #include <vlc_interaction.h>
36 #ifdef HAVE_SYS_TYPES_H
37 # include <sys/types.h>
39 #ifdef HAVE_SYS_STAT_H
40 # include <sys/stat.h>
46 #if defined( WIN32 ) && !defined( UNDER_CE )
53 #if defined( WIN32 ) && !defined( UNDER_CE )
54 /* fstat() support for large files on win32 */
55 # define fstat(a,b) _fstati64(a,b)
59 # define lseek _lseeki64
60 #elif defined( UNDER_CE )
64 # define read(a,b,c) fread(b,1,c,a)
65 # define close(a) fclose(a)
74 /*****************************************************************************
76 *****************************************************************************/
77 static int Open ( vlc_object_t * );
78 static void Close( vlc_object_t * );
80 #define CACHING_TEXT N_("Caching value in ms")
81 #define CACHING_LONGTEXT N_( \
82 "Caching value for files. This " \
83 "value should be set in milliseconds." )
84 #define CAT_TEXT N_("Concatenate with additional files")
85 #define CAT_LONGTEXT N_( \
86 "Play split files as if they were part of a unique file. " \
87 "You need to specify a comma-separated list of files." )
90 set_description( _("File input") );
91 set_shortname( _("File") );
92 set_category( CAT_INPUT );
93 set_subcategory( SUBCAT_INPUT_ACCESS );
94 add_integer( "file-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
95 add_string( "file-cat", NULL, NULL, CAT_TEXT, CAT_LONGTEXT, VLC_TRUE );
96 set_capability( "access2", 50 );
97 add_shortcut( "file" );
98 add_shortcut( "stream" );
99 add_shortcut( "kfir" );
100 set_callbacks( Open, Close );
104 /*****************************************************************************
105 * Exported prototypes
106 *****************************************************************************/
107 static int Seek( access_t *, int64_t );
108 static int Read( access_t *, uint8_t *, int );
109 static int Control( access_t *, int, va_list );
111 static int open_file( access_t *, const char * );
115 unsigned int i_nb_reads;
127 vlc_bool_t b_seekable;
128 vlc_bool_t b_pace_control;
131 /*****************************************************************************
132 * Open: open the file
133 *****************************************************************************/
134 static int Open( vlc_object_t *p_this )
136 access_t *p_access = (access_t*)p_this;
140 vlc_bool_t b_stdin = !strcmp (p_access->psz_path, "-");
142 /* Update default_pts to a suitable value for file access */
143 var_Create( p_access, "file-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
145 STANDARD_READ_ACCESS_INIT;
146 p_sys->i_nb_reads = 0;
147 p_sys->b_kfir = VLC_FALSE;
151 if (!strcasecmp (p_access->psz_access, "stream"))
153 p_sys->b_seekable = VLC_FALSE;
154 p_sys->b_pace_control = VLC_FALSE;
156 else if (!strcasecmp (p_access->psz_access, "kfir"))
158 p_sys->b_seekable = VLC_FALSE;
159 p_sys->b_pace_control = VLC_FALSE;
160 p_sys->b_kfir = VLC_TRUE;
164 p_sys->b_seekable = VLC_TRUE;
165 p_sys->b_pace_control = VLC_TRUE;
168 /* Count number of files */
169 catlist = var_CreateGetString (p_access, "file-cat");
178 for (const char *ptr = catlist; ptr != NULL; p_sys->filec++)
180 ptr = strchr (ptr, ',');
186 p_sys->filev = calloc (p_sys->filec, sizeof (p_sys->filev[0]));
187 if (p_sys->filev == NULL)
194 p_sys->sizev = calloc (p_sys->filec, sizeof (p_sys->sizev[0]));
195 if (p_sys->sizev == NULL)
204 char *filename = catlist;
205 for (unsigned i = 0; i < p_sys->filec; i++)
211 msg_Dbg (p_access, "opening file `%s'", p_access->psz_path);
216 fd = open_file (p_access, p_access->psz_path);
220 assert (filename != NULL);
222 char *ptr = strchr (filename, ',');
226 msg_Dbg (p_access, "opening additionnal file `%s'", filename);
227 fd = open_file (p_access, filename);
231 #ifdef HAVE_SYS_STAT_H
237 msg_Err (p_access, "fstat(%d): %s", fd, strerror (errno));
239 if (S_ISDIR (st.st_mode))
240 /* The directory plugin takes care of that */
241 msg_Dbg (p_access, "file is a directory, aborting");
257 p_sys->filev[i] = fd;
259 #ifdef HAVE_SYS_STAT_H
260 p_sys->sizev[i] = st.st_size;
261 p_access->info.i_size += st.st_size;
263 if (!S_ISREG (st.st_mode) && !S_ISBLK (st.st_mode)
264 && (!S_ISCHR (st.st_mode) || (st.st_size == 0)))
265 // If one file is not seekable, the concatenation is not either
266 p_sys->b_seekable = VLC_FALSE;
268 p_sys->b_seekable = !b_stdin;
275 if (p_sys->b_seekable && !p_access->info.i_size)
277 /* FIXME that's bad because all others access will be probed */
278 msg_Err (p_access, "file is empty, aborting");
286 /*****************************************************************************
287 * Close: close the target
288 *****************************************************************************/
289 static void Close (vlc_object_t * p_this)
291 access_t *p_access = (access_t*)p_this;
292 access_sys_t *p_sys = p_access->p_sys;
294 for (unsigned i = 0; i < p_sys->filec; i++)
295 close (p_sys->filev[i]);
302 /*****************************************************************************
303 * Read: standard read on a file descriptor.
304 *****************************************************************************/
305 static int Read( access_t *p_access, uint8_t *p_buffer, int i_len )
307 access_sys_t *p_sys = p_access->p_sys;
309 int fd = p_sys->filev[p_sys->filep];
311 #if !defined(WIN32) && !defined(UNDER_CE)
312 if( !p_sys->b_pace_control )
316 /* Find if some data is available. This won't work under Windows. */
321 if( p_access->b_die )
324 memset (&ufd, 0, sizeof (ufd));
328 i_ret = poll (&ufd, 1, 500);
332 i_ret = read (fd, p_buffer, i_len);
336 /* b_kfir ; work around a buggy poll() driver implementation */
337 while (((i_ret = read (fd, p_buffer, i_len)) == 0)
340 msleep( INPUT_ERROR_SLEEP );
345 #endif /* WIN32 || UNDER_CE */
346 /* b_pace_control || WIN32 */
347 i_ret = read( fd, p_buffer, i_len );
358 msg_Err (p_access, "read failed (%s)", strerror (errno));
359 intf_UserFatal (p_access, VLC_FALSE, _("File reading failed"),
360 _("VLC could not read file \"%s\"."),
364 /* Delay a bit to avoid consuming all the CPU. This is particularly
365 * useful when reading from an unconnected FIFO. */
366 msleep( INPUT_ERROR_SLEEP );
371 #ifdef HAVE_SYS_STAT_H
372 if( p_access->info.i_size != 0 &&
373 (p_sys->i_nb_reads % INPUT_FSTAT_NB_READS) == 0 )
376 int i = p_sys->filep;
378 if ((fstat (fd, &st) == 0)
379 && (p_sys->sizev[i] != st.st_size))
381 p_access->info.i_size += st.st_size - p_sys->sizev[i];
382 p_sys->sizev[i] = st.st_size;
383 p_access->info.i_update |= INPUT_UPDATE_SIZE;
388 /* If we reached an EOF then switch to the next file in the list */
391 if (++p_sys->filep < p_sys->filec)
392 /* We have to read some data */
393 return Read (p_access, p_buffer, i_len);
399 p_access->info.i_pos += i_ret;
400 else if( i_ret == 0 )
401 p_access->info.b_eof = VLC_TRUE;
406 /*****************************************************************************
407 * Seek: seek to a specific location in a file
408 *****************************************************************************/
409 static int Seek (access_t *p_access, int64_t i_pos)
411 access_sys_t *p_sys = p_access->p_sys;
413 if (p_access->info.i_size < p_access->info.i_pos)
415 msg_Err (p_access, "seeking too far");
416 i_pos = p_access->info.i_pos = p_access->info.i_size;
418 else if (p_access->info.i_pos < 0)
420 msg_Err (p_access, "seeking too early");
421 i_pos = p_access->info.i_pos = 0;
424 p_access->info.i_pos = i_pos;
425 p_access->info.b_eof = VLC_FALSE;
427 /* Determine which file we need to access */
429 assert (p_sys->filec > 0);
431 while (i_pos > p_sys->sizev[i])
433 i_pos -= p_sys->sizev[i++];
434 assert (i < p_sys->filec);
438 lseek (p_sys->filev[i], i_pos, SEEK_SET);
442 /*****************************************************************************
444 *****************************************************************************/
445 static int Control( access_t *p_access, int i_query, va_list args )
447 access_sys_t *p_sys = p_access->p_sys;
455 case ACCESS_CAN_SEEK:
456 case ACCESS_CAN_FASTSEEK:
457 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
458 *pb_bool = p_sys->b_seekable;
461 case ACCESS_CAN_PAUSE:
462 case ACCESS_CAN_CONTROL_PACE:
463 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
464 *pb_bool = p_sys->b_pace_control;
469 pi_int = (int*)va_arg( args, int * );
473 case ACCESS_GET_PTS_DELAY:
474 pi_64 = (int64_t*)va_arg( args, int64_t * );
475 *pi_64 = var_GetInteger( p_access, "file-caching" ) * I64C(1000);
479 case ACCESS_SET_PAUSE_STATE:
483 case ACCESS_GET_TITLE_INFO:
484 case ACCESS_SET_TITLE:
485 case ACCESS_SET_SEEKPOINT:
486 case ACCESS_SET_PRIVATE_ID_STATE:
487 case ACCESS_GET_META:
491 msg_Warn( p_access, "unimplemented query in control" );
499 static char *expand_path (const access_t *p_access, const char *path)
501 if (strncmp (path, "~/", 2) == 0)
505 // TODO: we should also support the ~cmassiot/ syntax
506 if (asprintf (&res, "%s/%s", p_access->p_libvlc->psz_homedir, path + 2) == -1)
512 if (!strcasecmp (p_access->psz_access, "file")
513 && ('/' == path[0]) && path[1] && (':' == path[2]) && ('/' == path[3]))
514 // Explorer can open path such as file:/C:/ or file:///C:/
515 // hence remove leading / if found
516 return strdup (path + 1);
519 return strdup (path);
523 /*****************************************************************************
524 * open_file: Opens a specific file
525 *****************************************************************************/
526 static int open_file (access_t *p_access, const char *psz_name)
528 char *path = expand_path (p_access, psz_name);
531 p_sys->fd = utf8_fopen( path, "rb" );
534 msg_Err( p_access, "cannot open file %s", psz_name );
535 intf_UserFatal( p_access, VLC_FALSE, _("File reading failed"),
536 _("VLC could not open file \"%s\"."), psz_name );
541 fseek( p_sys->fd, 0, SEEK_END );
542 p_access->info.i_size = ftell( p_sys->fd );
543 p_access->info.i_update |= INPUT_UPDATE_SIZE;
544 fseek( p_sys->fd, 0, SEEK_SET );
546 const char *psz_localname = ToLocale (path);
547 if (psz_localname == NULL)
549 msg_Err (p_access, "incorrect file name %s", psz_name);
554 // FIXME: support non-ANSI filenames on Win32
555 int fd = open (path, O_NONBLOCK /*| O_LARGEFILE*/);
556 LocaleFree (psz_localname);
561 msg_Err (p_access, "cannot open file %s (%s)", psz_name,
563 intf_UserFatal (p_access, VLC_FALSE, _("File reading failed"),
564 _("VLC could not open file \"%s\" (%s)."),
565 psz_name, strerror (errno));
569 # if defined(HAVE_FCNTL_H) && defined(F_FDAHEAD) && defined(F_NOCACHE)
570 /* We'd rather use any available memory for reading ahead
571 * than for caching what we've already seen/heard */
572 fcntl (fd, F_RDAHEAD, 1);
573 fcntl (fd, F_NOCACHE, 1);