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 )
57 # define lseek _lseeki64
58 #elif defined( UNDER_CE )
62 # define read(a,b,c) fread(b,1,c,a)
63 # define close(a) fclose(a)
72 /*****************************************************************************
74 *****************************************************************************/
75 static int Open ( vlc_object_t * );
76 static void Close( vlc_object_t * );
78 #define CACHING_TEXT N_("Caching value in ms")
79 #define CACHING_LONGTEXT N_( \
80 "Caching value for files. This " \
81 "value should be set in milliseconds." )
82 #define CAT_TEXT N_("Concatenate with additional files")
83 #define CAT_LONGTEXT N_( \
84 "Play split files as if they were part of a unique file. " \
85 "You need to specify a comma-separated list of files." )
88 set_description( _("File input") );
89 set_shortname( _("File") );
90 set_category( CAT_INPUT );
91 set_subcategory( SUBCAT_INPUT_ACCESS );
92 add_integer( "file-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
93 add_deprecated( "file-cat", VLC_TRUE );
94 set_capability( "access2", 50 );
95 add_shortcut( "file" );
96 add_shortcut( "stream" );
97 add_shortcut( "kfir" );
98 set_callbacks( Open, Close );
102 /*****************************************************************************
103 * Exported prototypes
104 *****************************************************************************/
105 static int Seek( access_t *, int64_t );
106 static int Read( access_t *, uint8_t *, int );
107 static int Control( access_t *, int, va_list );
109 static int open_file( access_t *, const char * );
113 unsigned int i_nb_reads;
119 vlc_bool_t b_seekable;
120 vlc_bool_t b_pace_control;
123 /*****************************************************************************
124 * Open: open the file
125 *****************************************************************************/
126 static int Open( vlc_object_t *p_this )
128 access_t *p_access = (access_t*)p_this;
131 vlc_bool_t b_stdin = !strcmp (p_access->psz_path, "-");
133 /* Update default_pts to a suitable value for file access */
134 var_Create( p_access, "file-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
136 STANDARD_READ_ACCESS_INIT;
137 p_sys->i_nb_reads = 0;
138 p_sys->b_kfir = VLC_FALSE;
139 int fd = p_sys->fd = -1;
141 if (!strcasecmp (p_access->psz_access, "stream"))
143 p_sys->b_seekable = VLC_FALSE;
144 p_sys->b_pace_control = VLC_FALSE;
146 else if (!strcasecmp (p_access->psz_access, "kfir"))
148 p_sys->b_seekable = VLC_FALSE;
149 p_sys->b_pace_control = VLC_FALSE;
150 p_sys->b_kfir = VLC_TRUE;
154 p_sys->b_seekable = VLC_TRUE;
155 p_sys->b_pace_control = VLC_TRUE;
159 msg_Dbg (p_access, "opening file `%s'", p_access->psz_path);
164 fd = open_file (p_access, p_access->psz_path);
166 #ifdef HAVE_SYS_STAT_H
172 msg_Err (p_access, "fstat(%d): %s", fd, strerror (errno));
174 if (S_ISDIR (st.st_mode))
175 /* The directory plugin takes care of that */
176 msg_Dbg (p_access, "file is a directory, aborting");
192 #ifdef HAVE_SYS_STAT_H
193 p_access->info.i_size = st.st_size;
194 if (!S_ISREG (st.st_mode) && !S_ISBLK (st.st_mode)
195 && (!S_ISCHR (st.st_mode) || (st.st_size == 0)))
196 p_sys->b_seekable = VLC_FALSE;
198 p_sys->b_seekable = !b_stdin;
199 # warning File size not known!
202 if (p_sys->b_seekable && (p_access->info.i_size == 0))
204 /* FIXME that's bad because all others access will be probed */
205 msg_Err (p_access, "file is empty, aborting");
213 /*****************************************************************************
214 * Close: close the target
215 *****************************************************************************/
216 static void Close (vlc_object_t * p_this)
218 access_t *p_access = (access_t*)p_this;
219 access_sys_t *p_sys = p_access->p_sys;
225 /*****************************************************************************
226 * Read: standard read on a file descriptor.
227 *****************************************************************************/
228 static int Read( access_t *p_access, uint8_t *p_buffer, int i_len )
230 access_sys_t *p_sys = p_access->p_sys;
234 #if !defined(WIN32) && !defined(UNDER_CE)
235 if( !p_sys->b_pace_control )
239 /* Find if some data is available. This won't work under Windows. */
244 if( p_access->b_die )
247 memset (&ufd, 0, sizeof (ufd));
251 i_ret = poll (&ufd, 1, 500);
255 i_ret = read (fd, p_buffer, i_len);
259 /* b_kfir ; work around a buggy poll() driver implementation */
260 while (((i_ret = read (fd, p_buffer, i_len)) == 0)
263 msleep( INPUT_ERROR_SLEEP );
268 #endif /* WIN32 || UNDER_CE */
269 /* b_pace_control || WIN32 */
270 i_ret = read( fd, p_buffer, i_len );
281 msg_Err (p_access, "read failed (%s)", strerror (errno));
282 intf_UserFatal (p_access, VLC_FALSE, _("File reading failed"),
283 _("VLC could not read file \"%s\"."),
287 /* Delay a bit to avoid consuming all the CPU. This is particularly
288 * useful when reading from an unconnected FIFO. */
289 msleep( INPUT_ERROR_SLEEP );
294 #ifdef HAVE_SYS_STAT_H
295 if( p_access->info.i_size != 0 &&
296 (p_sys->i_nb_reads % INPUT_FSTAT_NB_READS) == 0 )
300 if ((fstat (fd, &st) == 0)
301 && (p_access->info.i_size != st.st_size))
303 p_access->info.i_size = st.st_size;
304 p_access->info.i_update |= INPUT_UPDATE_SIZE;
310 p_access->info.i_pos += i_ret;
311 else if( i_ret == 0 )
312 p_access->info.b_eof = VLC_TRUE;
317 /*****************************************************************************
318 * Seek: seek to a specific location in a file
319 *****************************************************************************/
320 static int Seek (access_t *p_access, int64_t i_pos)
322 if (i_pos > p_access->info.i_size)
324 msg_Err (p_access, "seeking too far");
325 i_pos = p_access->info.i_size;
329 msg_Err (p_access, "seeking too early");
333 p_access->info.i_pos = i_pos;
334 p_access->info.b_eof = VLC_FALSE;
336 /* Determine which file we need to access */
337 lseek (p_access->p_sys->fd, i_pos, SEEK_SET);
341 /*****************************************************************************
343 *****************************************************************************/
344 static int Control( access_t *p_access, int i_query, va_list args )
346 access_sys_t *p_sys = p_access->p_sys;
354 case ACCESS_CAN_SEEK:
355 case ACCESS_CAN_FASTSEEK:
356 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
357 *pb_bool = p_sys->b_seekable;
360 case ACCESS_CAN_PAUSE:
361 case ACCESS_CAN_CONTROL_PACE:
362 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
363 *pb_bool = p_sys->b_pace_control;
368 pi_int = (int*)va_arg( args, int * );
372 case ACCESS_GET_PTS_DELAY:
373 pi_64 = (int64_t*)va_arg( args, int64_t * );
374 *pi_64 = var_GetInteger( p_access, "file-caching" ) * I64C(1000);
378 case ACCESS_SET_PAUSE_STATE:
382 case ACCESS_GET_TITLE_INFO:
383 case ACCESS_SET_TITLE:
384 case ACCESS_SET_SEEKPOINT:
385 case ACCESS_SET_PRIVATE_ID_STATE:
386 case ACCESS_GET_META:
390 msg_Warn( p_access, "unimplemented query in control" );
398 static char *expand_path (const access_t *p_access, const char *path)
400 if (strncmp (path, "~/", 2) == 0)
404 // TODO: we should also support the ~cmassiot/ syntax
405 if (asprintf (&res, "%s/%s", p_access->p_libvlc->psz_homedir, path + 2) == -1)
411 if (!strcasecmp (p_access->psz_access, "file")
412 && ('/' == path[0]) && path[1] && (':' == path[2]) && ('/' == path[3]))
413 // Explorer can open path such as file:/C:/ or file:///C:/
414 // hence remove leading / if found
415 return strdup (path + 1);
418 return strdup (path);
422 /*****************************************************************************
423 * open_file: Opens a specific file
424 *****************************************************************************/
425 static int open_file (access_t *p_access, const char *psz_name)
427 char *path = expand_path (p_access, psz_name);
430 p_sys->fd = utf8_fopen( path, "rb" );
433 msg_Err( p_access, "cannot open file %s", psz_name );
434 intf_UserFatal( p_access, VLC_FALSE, _("File reading failed"),
435 _("VLC could not open file \"%s\"."), psz_name );
440 fseek( p_sys->fd, 0, SEEK_END );
441 p_access->info.i_size = ftell( p_sys->fd );
442 p_access->info.i_update |= INPUT_UPDATE_SIZE;
443 fseek( p_sys->fd, 0, SEEK_SET );
445 int fd = utf8_open (path, O_RDONLY | O_NONBLOCK /* O_LARGEFILE*/, 0666);
448 msg_Err (p_access, "cannot open file %s (%s)", psz_name,
450 intf_UserFatal (p_access, VLC_FALSE, _("File reading failed"),
451 _("VLC could not open file \"%s\" (%s)."),
452 psz_name, strerror (errno));
456 # if defined(HAVE_FCNTL_H) && defined(F_FDAHEAD) && defined(F_NOCACHE)
457 /* We'd rather use any available memory for reading ahead
458 * than for caching what we've already seen/heard */
459 fcntl (fd, F_RDAHEAD, 1);
460 fcntl (fd, F_NOCACHE, 1);