1 /*****************************************************************************
2 * input.c: input thread
3 * Read an MPEG2 stream, demultiplex and parse it before sending it to
5 *****************************************************************************
6 * Copyright (C) 1998, 1999, 2000 VideoLAN
7 * $Id: input.c,v 1.108 2001/05/19 00:39:30 stef Exp $
9 * Authors: Christophe Massiot <massiot@via.ecp.fr>
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
32 #include <sys/types.h>
37 #ifdef STRNCASECMP_IN_STRINGS_H
42 /* Network functions */
44 #if !defined( SYS_BEOS ) && !defined( SYS_NTO ) && !defined( WIN32 )
45 #include <netdb.h> /* hostent ... */
46 #include <sys/socket.h>
47 #include <netinet/in.h>
48 #include <arpa/inet.h>
49 #include <sys/types.h>
50 #include <sys/socket.h>
54 # include <sys/times.h>
65 #include "intf_playlist.h"
67 #include "stream_control.h"
68 #include "input_ext-intf.h"
69 #include "input_ext-dec.h"
72 #include "interface.h"
76 /* #include <netutils.h> */
79 /*****************************************************************************
81 *****************************************************************************/
82 static void RunThread ( input_thread_t *p_input );
83 static int InitThread ( input_thread_t *p_input );
84 static void ErrorThread ( input_thread_t *p_input );
85 static void DestroyThread ( input_thread_t *p_input );
86 static void EndThread ( input_thread_t *p_input );
88 /*****************************************************************************
89 * input_CreateThread: creates a new input thread
90 *****************************************************************************
91 * This function creates a new input, and returns a pointer
92 * to its description. On error, it returns NULL.
93 * If pi_status is NULL, then the function will block until the thread is ready.
94 * If not, it will be updated using one of the THREAD_* constants.
95 *****************************************************************************/
96 input_thread_t *input_CreateThread ( playlist_item_t *p_item, int *pi_status )
98 input_thread_t * p_input; /* thread descriptor */
99 int i_status; /* thread status */
101 /* Allocate descriptor */
102 p_input = (input_thread_t *)malloc( sizeof(input_thread_t) );
103 if( p_input == NULL )
105 intf_ErrMsg( "input error: can't allocate input thread (%s)",
110 /* Packets read once */
111 p_input->i_read_once = INPUT_READ_ONCE;
113 /* Initialize thread properties */
115 p_input->b_error = 0;
119 p_input->p_source = p_item->psz_name;
121 /* I have never understood that stuff --Meuuh */
122 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
123 *p_input->pi_status = THREAD_CREATE;
125 /* Initialize stream description */
126 p_input->stream.i_es_number = 0;
127 p_input->stream.i_selected_es_number = 0;
128 p_input->stream.i_pgrm_number = 0;
129 p_input->stream.i_new_status = p_input->stream.i_new_rate = 0;
130 p_input->stream.i_mux_rate = 0;
132 /* no stream, no area */
133 p_input->stream.i_area_nb = 0;
134 p_input->stream.pp_areas = NULL;
135 p_input->stream.p_selected_area = NULL;
136 p_input->stream.p_new_area = NULL;
137 /* By default there is one areas in a stream */
138 input_AddArea( p_input );
139 p_input->stream.p_selected_area = p_input->stream.pp_areas[0];
141 /* Initialize stream control properties. */
142 p_input->stream.control.i_status = PLAYING_S;
143 p_input->stream.control.i_rate = DEFAULT_RATE;
144 p_input->stream.control.b_mute = 0;
145 p_input->stream.control.b_bw = 0;
147 /* Create thread and set locks. */
148 vlc_mutex_init( &p_input->stream.stream_lock );
149 vlc_cond_init( &p_input->stream.stream_wait );
150 vlc_mutex_init( &p_input->stream.control.control_lock );
151 if( vlc_thread_create( &p_input->thread_id, "input", (void *) RunThread,
154 intf_ErrMsg( "input error: can't create input thread (%s)",
160 /* If status is NULL, wait until the thread is created */
161 if( pi_status == NULL )
165 msleep( THREAD_SLEEP );
166 } while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
167 && (i_status != THREAD_FATAL) );
168 if( i_status != THREAD_READY )
176 /*****************************************************************************
177 * input_DestroyThread: mark an input thread as zombie
178 *****************************************************************************
179 * This function should not return until the thread is effectively cancelled.
180 *****************************************************************************/
181 void input_DestroyThread( input_thread_t *p_input, int *pi_status )
183 int i_status; /* thread status */
186 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
187 *p_input->pi_status = THREAD_DESTROY;
189 /* Request thread destruction */
192 /* Make the thread exit of an eventual vlc_cond_wait() */
193 vlc_mutex_lock( &p_input->stream.stream_lock );
194 vlc_cond_signal( &p_input->stream.stream_wait );
195 vlc_mutex_unlock( &p_input->stream.stream_lock );
197 /* If status is NULL, wait until thread has been destroyed */
198 if( pi_status == NULL )
202 msleep( THREAD_SLEEP );
203 } while ( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
204 && (i_status != THREAD_FATAL) );
208 /*****************************************************************************
209 * RunThread: main thread loop
210 *****************************************************************************
211 * Thread in charge of processing the network packets and demultiplexing.
212 *****************************************************************************/
213 static void RunThread( input_thread_t *p_input )
217 if( InitThread( p_input ) )
220 /* If we failed, wait before we are killed, and exit */
221 *p_input->pi_status = THREAD_ERROR;
222 p_input->b_error = 1;
223 ErrorThread( p_input );
224 DestroyThread( p_input );
228 /* initialization is completed */
229 vlc_mutex_lock( &p_input->stream.stream_lock );
230 p_input->stream.b_changed = 1;
231 vlc_mutex_unlock( &p_input->stream.stream_lock );
233 while( !p_input->b_die && !p_input->b_error && !p_input->b_eof )
235 data_packet_t * pp_packets[p_input->i_read_once];
241 vlc_mutex_lock( &p_input->stream.stream_lock );
243 if( p_input->stream.p_new_area )
245 p_input->pf_set_area( p_input, p_input->stream.p_new_area );
246 p_input->stream.p_new_area = NULL;
249 if( p_input->stream.p_selected_area->i_seek != NO_SEEK )
251 if( p_input->stream.b_seekable && p_input->pf_seek != NULL )
253 p_input->pf_seek( p_input,
254 p_input->stream.p_selected_area->i_seek );
256 for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
258 pgrm_descriptor_t * p_pgrm
259 = p_input->stream.pp_programs[i];
260 /* Escape all decoders for the stream discontinuity they
262 input_EscapeDiscontinuity( p_input, p_pgrm );
264 /* Reinitialize synchro. */
265 p_pgrm->i_synchro_state = SYNCHRO_REINIT;
268 p_input->stream.p_selected_area->i_seek = NO_SEEK;
271 if( p_input->stream.p_removed_es )
273 input_UnselectES( p_input, p_input->stream.p_removed_es );
274 p_input->stream.p_removed_es = NULL;
277 if( p_input->stream.p_newly_selected_es )
279 input_SelectES( p_input, p_input->stream.p_newly_selected_es );
280 p_input->stream.p_newly_selected_es = NULL;
283 vlc_mutex_unlock( &p_input->stream.stream_lock );
285 i_error = p_input->pf_read( p_input, pp_packets );
287 /* Demultiplex read packets. */
288 for( i = 0; i < p_input->i_read_once && pp_packets[i] != NULL; i++ )
290 p_input->pf_demux( p_input, pp_packets[i] );
297 /* End of file - we do not set b_die because only the
298 * interface is allowed to do so. */
299 intf_WarnMsg( 3, "input: EOF reached" );
304 p_input->b_error = 1;
309 if( p_input->b_error || p_input->b_eof )
311 ErrorThread( p_input );
314 EndThread( p_input );
316 DestroyThread( p_input );
318 intf_DbgMsg("input: Thread end");
321 /*****************************************************************************
322 * InitThread: init the input Thread
323 *****************************************************************************/
324 static int InitThread( input_thread_t * p_input )
328 /* Initialize statistics */
329 p_input->c_loops = 0;
330 p_input->c_bytes = 0;
331 p_input->c_payload_bytes = 0;
332 p_input->c_packets_read = 0;
333 p_input->c_packets_trashed = 0;
336 p_input->p_input_module = module_Need( MODULE_CAPABILITY_INPUT,
337 (probedata_t *)p_input );
339 if( p_input->p_input_module == NULL )
341 intf_ErrMsg( "input error: no suitable input module for `%s'",
346 #define f p_input->p_input_module->p_functions->input.functions.input
347 p_input->pf_init = f.pf_init;
348 p_input->pf_open = f.pf_open;
349 p_input->pf_close = f.pf_close;
350 p_input->pf_end = f.pf_end;
351 p_input->pf_read = f.pf_read;
352 p_input->pf_set_area = f.pf_set_area;
353 p_input->pf_demux = f.pf_demux;
354 p_input->pf_new_packet = f.pf_new_packet;
355 p_input->pf_new_pes = f.pf_new_pes;
356 p_input->pf_delete_packet = f.pf_delete_packet;
357 p_input->pf_delete_pes = f.pf_delete_pes;
358 p_input->pf_rewind = f.pf_rewind;
359 p_input->pf_seek = f.pf_seek;
361 p_input->pf_open( p_input );
363 if( p_input->b_error )
365 /* We barfed -- exit nicely */
366 p_input->pf_close( p_input );
367 module_Unneed( p_input->p_input_module );
371 p_input->pf_init( p_input );
373 if( p_input->b_error )
375 /* We barfed -- exit nicely */
376 p_input->pf_close( p_input );
377 module_Unneed( p_input->p_input_module );
381 *p_input->pi_status = THREAD_READY;
386 /*****************************************************************************
387 * ErrorThread: RunThread() error loop
388 *****************************************************************************
389 * This function is called when an error occured during thread main's loop.
390 *****************************************************************************/
391 static void ErrorThread( input_thread_t *p_input )
393 while( !p_input->b_die )
396 msleep( INPUT_IDLE_SLEEP );
400 /*****************************************************************************
401 * EndThread: end the input thread
402 *****************************************************************************/
403 static void EndThread( input_thread_t * p_input )
405 int * pi_status; /* thread status */
408 pi_status = p_input->pi_status;
409 *pi_status = THREAD_END;
413 struct tms cpu_usage;
416 intf_Msg("input stats: cpu usage (user: %d, system: %d)",
417 cpu_usage.tms_utime, cpu_usage.tms_stime);
421 /* Free all ES and destroy all decoder threads */
422 input_EndStream( p_input );
424 /* Free demultiplexer's data */
425 p_input->pf_end( p_input );
428 p_input->pf_close( p_input );
430 /* Release modules */
431 module_Unneed( p_input->p_input_module );
435 /*****************************************************************************
436 * DestroyThread: destroy the input thread
437 *****************************************************************************/
438 static void DestroyThread( input_thread_t * p_input )
440 int * pi_status; /* thread status */
443 pi_status = p_input->pi_status;
445 /* Destroy Mutex locks */
446 vlc_mutex_destroy( &p_input->stream.control.control_lock );
447 vlc_mutex_destroy( &p_input->stream.stream_lock );
449 /* Free input structure */
453 *pi_status = THREAD_OVER;
456 /*****************************************************************************
457 * input_FileOpen : open a file descriptor
458 *****************************************************************************/
459 void input_FileOpen( input_thread_t * p_input )
461 struct stat stat_info;
464 char *psz_name = p_input->p_source;
466 /* FIXME: this code ought to be in the plugin so that code can
467 * be shared with the *_Probe function */
468 if( ( i_stat = stat( psz_name, &stat_info ) ) == (-1) )
470 int i_size = strlen( psz_name );
473 && !strncasecmp( psz_name, "dvd:", 4 ) )
475 /* get rid of the 'dvd:' stuff and try again */
477 i_stat = stat( psz_name, &stat_info );
479 else if( ( i_size > 5 )
480 && !strncasecmp( psz_name, "file:", 5 ) )
482 /* get rid of the 'file:' stuff and try again */
484 i_stat = stat( psz_name, &stat_info );
489 intf_ErrMsg( "input error: cannot stat() file `%s' (%s)",
490 psz_name, strerror(errno));
491 p_input->b_error = 1;
496 vlc_mutex_lock( &p_input->stream.stream_lock );
498 /* If we are here we can control the pace... */
499 p_input->stream.b_pace_control = 1;
501 if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
502 || S_ISBLK(stat_info.st_mode) )
504 p_input->stream.b_seekable = 1;
505 p_input->stream.p_selected_area->i_size = stat_info.st_size;
507 else if( S_ISFIFO(stat_info.st_mode)
508 #if !defined( SYS_BEOS ) && !defined( WIN32 )
509 || S_ISSOCK(stat_info.st_mode)
513 p_input->stream.b_seekable = 0;
514 p_input->stream.p_selected_area->i_size = 0;
518 vlc_mutex_unlock( &p_input->stream.stream_lock );
519 intf_ErrMsg( "input error: unknown file type for `%s'",
521 p_input->b_error = 1;
525 p_input->stream.p_selected_area->i_tell = 0;
526 vlc_mutex_unlock( &p_input->stream.stream_lock );
528 intf_WarnMsg( 1, "input: opening file `%s'", p_input->p_source );
530 if( (p_input->i_handle = open( psz_name,
531 /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
533 if( (p_input->i_handle = open( psz_name, O_BINARY
534 /*O_NONBLOCK | O_LARGEFILE*/ )) == (-1) )
537 intf_ErrMsg( "input error: cannot open file (%s)", strerror(errno) );
538 p_input->b_error = 1;
544 /*****************************************************************************
545 * input_FileClose : close a file descriptor
546 *****************************************************************************/
547 void input_FileClose( input_thread_t * p_input )
549 intf_WarnMsg( 1, "input: closing file `%s'", p_input->p_source );
550 close( p_input->i_handle );
556 #if !defined( SYS_BEOS ) && !defined( SYS_NTO ) && !defined( WIN32 )
557 /*****************************************************************************
558 * input_NetworkOpen : open a network socket
559 *****************************************************************************/
560 void input_NetworkOpen( input_thread_t * p_input )
562 char *psz_server = NULL;
563 char *psz_broadcast = NULL;
566 struct sockaddr_in sock;
568 /* Get the remote server */
569 if( p_input->p_source != NULL )
571 psz_server = p_input->p_source;
573 /* Skip the protocol name */
574 while( *psz_server && *psz_server != ':' )
579 /* Skip the "://" part */
580 while( *psz_server && (*psz_server == ':' || *psz_server == '/') )
585 /* Found a server name */
588 char *psz_port = psz_server;
590 /* Skip the hostname part */
591 while( *psz_port && *psz_port != ':' )
596 /* Found a port name */
599 /* Replace ':' with '\0' */
603 psz_broadcast = psz_port;
604 while( *psz_broadcast && *psz_broadcast != ':' )
611 *psz_broadcast = '\0';
613 while( *psz_broadcast && *psz_broadcast == ':' )
620 psz_broadcast = NULL;
623 /* port before broadcast address */
624 if( *psz_port != ':' )
626 i_port = atoi( psz_port );
636 /* Check that we got a valid server */
637 if( psz_server == NULL )
639 psz_server = main_GetPszVariable( INPUT_SERVER_VAR,
640 INPUT_SERVER_DEFAULT );
643 /* Check that we got a valid port */
646 i_port = main_GetIntVariable( INPUT_PORT_VAR, INPUT_PORT_DEFAULT );
649 if( psz_broadcast == NULL )
651 /* Are we broadcasting ? */
652 psz_broadcast = main_GetPszVariable( INPUT_BROADCAST_VAR, NULL );
655 intf_WarnMsg( 2, "input: server: %s port: %d broadcast: %s",
656 psz_server, i_port, psz_broadcast );
658 /* Open a SOCK_DGRAM (UDP) socket, in the AF_INET domain, automatic (0)
660 p_input->i_handle = socket( AF_INET, SOCK_DGRAM, 0 );
661 if( p_input->i_handle == -1 )
663 intf_ErrMsg("input error: can't create socket : %s", strerror(errno));
664 p_input->b_error = 1;
668 /* We may want to reuse an already used socket */
670 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_REUSEADDR,
671 &i_opt, sizeof( i_opt ) ) == -1 )
673 intf_ErrMsg("input error: can't configure socket (SO_REUSEADDR: %s)",
675 close( p_input->i_handle );
676 p_input->b_error = 1;
680 /* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s) to avoid
681 * packet loss caused by scheduling problems */
683 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_RCVBUF,
684 &i_opt, sizeof( i_opt ) ) == -1 )
686 intf_ErrMsg("input error: can't configure socket (SO_RCVBUF: %s)",
688 close( p_input->i_handle );
689 p_input->b_error = 1;
693 /* Build the local socket */
694 if ( network_BuildLocalAddr( &sock, i_port, psz_broadcast )
697 close( p_input->i_handle );
698 p_input->b_error = 1;
703 if( bind( p_input->i_handle, (struct sockaddr *)&sock,
704 sizeof( sock ) ) < 0 )
706 intf_ErrMsg("input error: can't bind socket (%s)", strerror(errno));
707 close( p_input->i_handle );
708 p_input->b_error = 1;
712 /* Build socket for remote connection */
713 if ( network_BuildRemoteAddr( &sock, psz_server ) == -1 )
715 close( p_input->i_handle );
716 p_input->b_error = 1;
720 /* And connect it ... should we really connect ? */
721 if( connect( p_input->i_handle, (struct sockaddr *) &sock,
722 sizeof( sock ) ) == (-1) )
724 intf_ErrMsg( "NetworkOpen: can't connect socket : %s",
726 close( p_input->i_handle );
727 p_input->b_error = 1;
731 /* We can't pace control, but FIXME : bug in meuuh's code to sync PCR
732 * with the server. */
733 p_input->stream.b_pace_control = 0;
734 p_input->stream.b_seekable = 0;
739 /*****************************************************************************
740 * input_NetworkClose : close a network socket
741 *****************************************************************************/
742 void input_NetworkClose( input_thread_t * p_input )
744 close( p_input->i_handle );