1 /*****************************************************************************
2 * file.c: file input (file: access plug-in)
3 *****************************************************************************
4 * Copyright (C) 2001-2004 VideoLAN
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
28 #include <vlc/input.h>
33 #ifdef HAVE_SYS_TYPES_H
34 # include <sys/types.h>
36 #ifdef HAVE_SYS_TIME_H
37 # include <sys/time.h>
39 #ifdef HAVE_SYS_STAT_H
40 # include <sys/stat.h>
48 #elif defined( WIN32 ) && !defined( UNDER_CE )
52 /* stat() support for large files on win32 */
53 #if defined( WIN32 ) && !defined( UNDER_CE )
55 #define fstat(a,b) _fstati64(a,b)
59 # define close(a) CloseHandle((HANDLE)a)
62 /*****************************************************************************
64 *****************************************************************************/
65 static int Open ( vlc_object_t * );
66 static void Close( vlc_object_t * );
68 #define CACHING_TEXT N_("Caching value in ms")
69 #define CACHING_LONGTEXT N_( \
70 "Allows you to modify the default caching value for file streams. This " \
71 "value should be set in millisecond units." )
72 #define CAT_TEXT N_("Concatenate with additional files")
73 #define CAT_LONGTEXT N_( \
74 "Allows you to play split files as if they were part of a unique file. " \
75 "Specify a comma-separated list of files." )
78 set_description( _("Standard filesystem file input") );
79 add_integer( "file-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
80 add_string( "file-cat", NULL, NULL, CAT_TEXT, CAT_LONGTEXT, VLC_TRUE );
81 set_capability( "access2", 50 );
82 add_shortcut( "file" );
83 add_shortcut( "stream" );
84 add_shortcut( "kfir" );
85 set_callbacks( Open, Close );
89 /*****************************************************************************
91 *****************************************************************************/
92 static int Seek( access_t *, int64_t );
93 static int Read( access_t *, uint8_t *, int );
94 static int Control( access_t *, int, va_list );
96 static int _OpenFile( access_t *, char * );
107 unsigned int i_nb_reads;
122 vlc_bool_t b_seekable;
123 vlc_bool_t b_pace_control;
126 /*****************************************************************************
127 * Open: open the file
128 *****************************************************************************/
129 static int Open( vlc_object_t *p_this )
131 access_t *p_access = (access_t*)p_this;
133 char *psz_name = p_access->psz_path;
136 #ifdef HAVE_SYS_STAT_H
138 struct stat stat_info;
142 file_entry_t * p_file;
145 b_stdin = psz_name[0] == '-' && psz_name[1] == '\0';
147 #ifdef HAVE_SYS_STAT_H
148 if( !b_stdin && (i_stat = stat( psz_name, &stat_info )) == (-1) )
150 msg_Warn( p_access, "cannot stat() file `%s' (%s)",
151 psz_name, strerror(errno));
156 p_access->pf_read = Read;
157 p_access->pf_block = NULL;
158 p_access->pf_seek = Seek;
159 p_access->pf_control = Control;
160 p_access->info.i_update = 0;
161 p_access->info.i_size = 0;
162 p_access->info.i_pos = 0;
163 p_access->info.b_eof = VLC_FALSE;
164 p_access->info.i_title = 0;
165 p_access->info.i_seekpoint = 0;
166 p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
167 p_sys->i_nb_reads = 0;
168 p_sys->b_kfir = VLC_FALSE;
174 if( !strcasecmp( p_access->psz_access, "stream" ) )
176 p_sys->b_seekable = VLC_FALSE;
177 p_sys->b_pace_control = VLC_FALSE;
179 else if( !strcasecmp( p_access->psz_access, "kfir" ) )
181 p_sys->b_seekable = VLC_FALSE;
182 p_sys->b_pace_control = VLC_FALSE;
183 p_sys->b_kfir = VLC_TRUE;
188 p_sys->b_pace_control = VLC_TRUE;
192 p_sys->b_seekable = VLC_FALSE;
197 /* We'll update i_size after it's been opened */
198 p_sys->b_seekable = VLC_TRUE;
200 #elif defined( HAVE_SYS_STAT_H )
201 else if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode) ||
202 S_ISBLK(stat_info.st_mode) )
204 p_sys->b_seekable = VLC_TRUE;
205 p_access->info.i_size = stat_info.st_size;
207 else if( S_ISFIFO(stat_info.st_mode)
208 # if !defined( SYS_BEOS ) && !defined( WIN32 )
209 || S_ISSOCK(stat_info.st_mode)
213 p_sys->b_seekable = VLC_FALSE;
218 msg_Err( p_access, "unknown file type for `%s'", psz_name );
223 msg_Dbg( p_access, "opening file `%s'", psz_name );
229 else if( _OpenFile( p_access, psz_name ) )
235 if( p_sys->b_seekable && !p_access->info.i_size )
237 /* FIXME that's bad because all others access will be probed */
238 msg_Err( p_access, "file %s is empty, aborting", psz_name );
243 /* Update default_pts to a suitable value for file access */
244 var_Create( p_access, "file-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
247 * Get the additional list of files
249 p_file = malloc( sizeof(file_entry_t) );
250 p_file->i_size = p_access->info.i_size;
251 p_file->psz_name = strdup( psz_name );
252 TAB_APPEND( p_sys->i_file, p_sys->file, p_file );
254 psz = var_CreateGetString( p_access, "file-cat" );
257 char *psz_parser = psz_name = psz;
260 while( psz_name && *psz_name )
262 psz_parser = strchr( psz_name, ',' );
263 if( psz_parser ) *psz_parser = 0;
265 psz_name = strdup( psz_name );
268 msg_Dbg( p_access, "adding file `%s'", psz_name );
271 #ifdef HAVE_SYS_STAT_H
272 if( !stat( psz_name, &stat_info ) )
274 p_access->info.i_size += stat_info.st_size;
275 i_size = stat_info.st_size;
279 msg_Dbg( p_access, "cannot stat() file `%s'", psz_name );
282 p_file = malloc( sizeof(file_entry_t) );
283 p_file->i_size = i_size;
284 p_file->psz_name = psz_name;
286 TAB_APPEND( p_sys->i_file, p_sys->file, p_file );
289 psz_name = psz_parser;
290 if( psz_name ) psz_name++;
298 /*****************************************************************************
299 * Close: close the target
300 *****************************************************************************/
301 static void Close( vlc_object_t * p_this )
303 access_t *p_access = (access_t*)p_this;
304 access_sys_t *p_sys = p_access->p_sys;
309 for( i = 0; i < p_sys->i_file; i++ )
311 free( p_sys->file[i]->psz_name );
312 free( p_sys->file[i] );
319 /*****************************************************************************
320 * Read: standard read on a file descriptor.
321 *****************************************************************************/
322 static int Read( access_t *p_access, uint8_t *p_buffer, int i_len )
324 access_sys_t *p_sys = p_access->p_sys;
327 #if !defined(WIN32) && !defined(UNDER_CE)
328 if( !p_sys->b_pace_control )
332 /* Find if some data is available. This won't work under Windows. */
333 struct timeval timeout;
336 /* Initialize file descriptor set */
338 FD_SET( p_sys->fd, &fds );
340 /* We'll wait 0.5 second if nothing happens */
342 timeout.tv_usec = 500000;
344 /* Find if some data is available */
345 while( (i_ret = select( p_sys->fd + 1, &fds, NULL, NULL, &timeout )) == 0
346 || (i_ret < 0 && errno == EINTR) )
349 FD_SET( p_sys->fd, &fds );
351 timeout.tv_usec = 500000;
353 if( p_access->b_die )
359 msg_Err( p_access, "select error (%s)", strerror(errno) );
363 i_ret = read( p_sys->fd, p_buffer, i_len );
367 /* b_kfir ; work around a buggy poll() driver implementation */
368 while ( (i_ret = read( p_sys->fd, p_buffer, i_len )) == 0 && !p_access->b_die )
370 msleep( INPUT_ERROR_SLEEP );
375 #endif /* WIN32 || UNDER_CE */
377 if( !ReadFile( p_sys->fd_handle, p_buffer, i_len, (LPDWORD)&i_ret, 0 ) )
383 /* b_pace_control || WIN32 */
384 i_ret = read( p_sys->fd, p_buffer, i_len );
390 if( errno != EINTR && errno != EAGAIN )
391 msg_Err( p_access, "read failed (%s)", strerror(errno) );
393 /* Delay a bit to avoid consuming all the CPU. This is particularly
394 * useful when reading from an unconnected FIFO. */
395 msleep( INPUT_ERROR_SLEEP );
399 #ifdef HAVE_SYS_STAT_H
400 if( p_access->info.i_size != 0 &&
401 (p_sys->i_nb_reads % INPUT_FSTAT_NB_READS) == 0 )
403 struct stat stat_info;
404 int i_file = p_sys->i_index;
406 if ( fstat( p_sys->fd, &stat_info ) == -1 )
408 msg_Warn( p_access, "couldn't stat again the file (%s)", strerror(errno) );
410 else if ( p_sys->file[i_file]->i_size != stat_info.st_size )
412 p_access->info.i_size += (stat_info.st_size - p_sys->file[i_file]->i_size );
413 p_access->info.i_update |= INPUT_UPDATE_SIZE;
418 /* If we reached an EOF then switch to the next file in the list */
419 if ( i_ret == 0 && p_sys->i_index + 1 < p_sys->i_file )
422 char *psz_name = p_sys->file[++p_sys->i_index]->psz_name;
424 msg_Dbg( p_access, "opening file `%s'", psz_name );
426 if ( _OpenFile( p_access, psz_name ) )
434 /* We have to read some data */
435 return Read( p_access, p_buffer, i_len );
439 p_access->info.i_pos += i_ret;
440 else if( i_ret == 0 )
441 p_access->info.b_eof = VLC_TRUE;
446 /*****************************************************************************
447 * Seek: seek to a specific location in a file
448 *****************************************************************************/
449 static int Seek( access_t *p_access, int64_t i_pos )
451 access_sys_t *p_sys = p_access->p_sys;
454 /* Check which file we need to access */
455 if( p_sys->i_file > 1 )
461 for( i = 0; i < p_sys->i_file - 1; i++ )
463 if( i_pos < p_sys->file[i]->i_size + i_size )
465 i_size += p_sys->file[i]->i_size;
467 psz_name = p_sys->file[i]->psz_name;
469 msg_Dbg( p_access, "opening file `%s'", psz_name );
471 if ( i != p_sys->i_index && !_OpenFile( p_access, psz_name ) )
483 #if defined( WIN32 ) && !defined( UNDER_CE )
484 _lseeki64( p_sys->fd, i_pos - i_size, SEEK_SET );
486 lseek( p_sys->fd, i_pos - i_size, SEEK_SET );
489 p_access->info.i_pos = i_pos;
490 if( p_access->info.i_size < p_access->info.i_pos )
492 msg_Err( p_access, "seeking too far" );
493 p_access->info.i_pos = p_access->info.i_size;
495 else if( p_access->info.i_pos < 0 )
497 msg_Err( p_access, "seeking too early" );
498 p_access->info.i_pos = 0;
501 p_access->info.b_eof = VLC_FALSE;
507 /*****************************************************************************
509 *****************************************************************************/
510 static int Control( access_t *p_access, int i_query, va_list args )
512 access_sys_t *p_sys = p_access->p_sys;
520 case ACCESS_CAN_SEEK:
521 case ACCESS_CAN_FASTSEEK:
522 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
523 *pb_bool = p_sys->b_seekable;
526 case ACCESS_CAN_PAUSE:
527 case ACCESS_CAN_CONTROL_PACE:
528 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
529 *pb_bool = p_sys->b_pace_control;
534 pi_int = (int*)va_arg( args, int * );
538 case ACCESS_GET_PTS_DELAY:
539 pi_64 = (int64_t*)va_arg( args, int64_t * );
540 *pi_64 = (int64_t)var_GetInteger( p_access, "file-caching" ) * I64C(1000);
543 case ACCESS_SET_PAUSE_STATE:
547 case ACCESS_GET_TITLE_INFO:
548 case ACCESS_SET_TITLE:
549 case ACCESS_SET_SEEKPOINT:
550 case ACCESS_SET_PRIVATE_ID_STATE:
554 msg_Warn( p_access, "unimplemented query in control" );
562 /*****************************************************************************
563 * OpenFile: Opens a specific file
564 *****************************************************************************/
565 static int _OpenFile( access_t * p_access, char * psz_name )
567 access_sys_t *p_sys = p_access->p_sys;
570 wchar_t psz_filename[MAX_PATH];
571 MultiByteToWideChar( CP_ACP, 0, psz_name, -1, psz_filename, MAX_PATH );
574 CreateFile( psz_filename, GENERIC_READ, FILE_SHARE_READ,
575 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
576 p_sys->fd = (int)p_sys->fd_handle;
578 if ( p_sys->fd_handle == INVALID_HANDLE_VALUE )
580 msg_Err( p_access, "cannot open file %s", psz_name );
583 p_access->info.i_size =
584 GetFileSize( p_sys->fd_handle, NULL );
585 p_access->info.i_update |= INPUT_UPDATE_SIZE;
588 p_sys->fd = open( psz_name, O_NONBLOCK /*| O_LARGEFILE*/ );
589 if ( p_sys->fd == -1 )
591 msg_Err( p_access, "cannot open file %s (%s)", psz_name,