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 1.92 2001/03/11 19:00:18 henri 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>
39 /* Network functions */
42 #include <netdb.h> /* hostent ... */
43 #include <sys/socket.h>
44 #include <netinet/in.h>
45 #include <arpa/inet.h>
46 #include <sys/types.h>
47 #include <sys/socket.h>
51 # include <sys/times.h>
61 #include "intf_plst.h"
63 #include "stream_control.h"
64 #include "input_ext-intf.h"
65 #include "input_ext-dec.h"
68 #include "interface.h"
72 /* #include <netutils.h> */
75 /*****************************************************************************
77 *****************************************************************************/
78 static void RunThread ( input_thread_t *p_input );
79 static int InitThread ( input_thread_t *p_input );
80 static void ErrorThread ( input_thread_t *p_input );
81 static void DestroyThread ( input_thread_t *p_input );
82 static void EndThread ( input_thread_t *p_input );
84 /*****************************************************************************
85 * input_CreateThread: creates a new input thread
86 *****************************************************************************
87 * This function creates a new input, and returns a pointer
88 * to its description. On error, it returns NULL.
89 * If pi_status is NULL, then the function will block until the thread is ready.
90 * If not, it will be updated using one of the THREAD_* constants.
91 *****************************************************************************/
92 input_thread_t *input_CreateThread ( playlist_item_t *p_item, int *pi_status )
94 input_thread_t * p_input; /* thread descriptor */
95 int i_status; /* thread status */
97 /* Allocate descriptor */
98 p_input = (input_thread_t *)malloc( sizeof(input_thread_t) );
101 intf_ErrMsg( "input error: can't allocate input thread (%s)",
106 /* Packets read once */
107 p_input->i_read_once = INPUT_READ_ONCE;
109 /* Initialize thread properties */
111 p_input->b_error = 0;
115 p_input->p_source = p_item->psz_name;
117 /* I have never understood that stuff --Meuuh */
118 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
119 *p_input->pi_status = THREAD_CREATE;
121 /* Initialize stream description */
122 p_input->stream.i_es_number = 0;
123 p_input->stream.i_selected_es_number = 0;
124 p_input->stream.i_pgrm_number = 0;
125 p_input->stream.i_new_status = p_input->stream.i_new_rate = 0;
126 p_input->stream.i_mux_rate = 0;
128 p_input->stream.i_area_nb = 0;
129 p_input->stream.pp_areas = NULL;
130 /* By default there is one areas in a stream */
131 input_AddArea( p_input );
132 p_input->stream.p_selected_area = p_input->stream.pp_areas[0];
133 p_input->stream.p_selected_area->i_seek = NO_SEEK;
135 /* Initialize stream control properties. */
136 p_input->stream.control.i_status = PLAYING_S;
137 p_input->stream.control.i_rate = DEFAULT_RATE;
138 p_input->stream.control.b_mute = 0;
139 p_input->stream.control.b_bw = 0;
141 /* Initialize default settings for spawned decoders */
142 p_input->p_default_aout = p_main->p_aout;
143 p_input->p_default_vout = p_main->p_vout;
145 /* Create thread and set locks. */
146 vlc_mutex_init( &p_input->stream.stream_lock );
147 vlc_cond_init( &p_input->stream.stream_wait );
148 vlc_mutex_init( &p_input->stream.control.control_lock );
149 if( vlc_thread_create( &p_input->thread_id, "input", (void *) RunThread,
152 intf_ErrMsg( "input error: can't create input thread (%s)",
158 /* If status is NULL, wait until the thread is created */
159 if( pi_status == NULL )
163 msleep( THREAD_SLEEP );
164 } while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
165 && (i_status != THREAD_FATAL) );
166 if( i_status != THREAD_READY )
174 /*****************************************************************************
175 * input_DestroyThread: mark an input thread as zombie
176 *****************************************************************************
177 * This function should not return until the thread is effectively cancelled.
178 *****************************************************************************/
179 void input_DestroyThread( input_thread_t *p_input, int *pi_status )
181 int i_status; /* thread status */
184 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
185 *p_input->pi_status = THREAD_DESTROY;
187 /* Request thread destruction */
190 /* Make the thread exit of an eventual vlc_cond_wait() */
191 vlc_mutex_lock( &p_input->stream.stream_lock );
192 vlc_cond_signal( &p_input->stream.stream_wait );
193 vlc_mutex_unlock( &p_input->stream.stream_lock );
195 /* If status is NULL, wait until thread has been destroyed */
196 if( pi_status == NULL )
200 msleep( THREAD_SLEEP );
201 } while ( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
202 && (i_status != THREAD_FATAL) );
206 /*****************************************************************************
207 * RunThread: main thread loop
208 *****************************************************************************
209 * Thread in charge of processing the network packets and demultiplexing.
210 *****************************************************************************/
211 static void RunThread( input_thread_t *p_input )
215 if( InitThread( p_input ) )
218 /* If we failed, wait before we are killed, and exit */
219 *p_input->pi_status = THREAD_ERROR;
220 p_input->b_error = 1;
221 ErrorThread( p_input );
222 DestroyThread( p_input );
226 while( !p_input->b_die && !p_input->b_error && !p_input->b_eof )
228 data_packet_t * pp_packets[p_input->i_read_once];
234 vlc_mutex_lock( &p_input->stream.stream_lock );
235 if( p_input->stream.p_selected_area->i_seek != NO_SEEK )
237 if( p_input->stream.b_seekable && p_input->pf_seek != NULL )
239 p_input->pf_seek( p_input,
240 p_input->stream.p_selected_area->i_seek );
242 for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
244 pgrm_descriptor_t * p_pgrm
245 = p_input->stream.pp_programs[i];
246 /* Escape all decoders for the stream discontinuity they
248 input_EscapeDiscontinuity( p_input, p_pgrm );
250 /* Reinitialize synchro. */
251 p_pgrm->i_synchro_state = SYNCHRO_REINIT;
254 p_input->stream.p_selected_area->i_seek = NO_SEEK;
256 vlc_mutex_unlock( &p_input->stream.stream_lock );
258 i_error = p_input->pf_read( p_input, pp_packets );
260 /* Demultiplex read packets. */
261 for( i = 0; i < p_input->i_read_once && pp_packets[i] != NULL; i++ )
263 p_input->pf_demux( p_input, pp_packets[i] );
270 /* End of file - we do not set b_die because only the
271 * interface is allowed to do so. */
272 intf_WarnMsg( 1, "End of file reached" );
277 p_input->b_error = 1;
282 if( p_input->b_error || p_input->b_eof )
284 ErrorThread( p_input );
287 EndThread( p_input );
289 DestroyThread( p_input );
291 intf_DbgMsg("Thread end");
294 /*****************************************************************************
295 * InitThread: init the input Thread
296 *****************************************************************************/
297 static int InitThread( input_thread_t * p_input )
301 /* Initialize statistics */
302 p_input->c_loops = 0;
303 p_input->c_bytes = 0;
304 p_input->c_payload_bytes = 0;
305 p_input->c_packets_read = 0;
306 p_input->c_packets_trashed = 0;
309 p_input->p_input_module = module_Need( p_main->p_bank,
310 MODULE_CAPABILITY_INPUT,
311 (probedata_t *)p_input );
313 if( p_input->p_input_module == NULL )
315 intf_ErrMsg( "input error: no suitable input module" );
319 #define f p_input->p_input_module->p_functions->input.functions.input
320 p_input->pf_init = f.pf_init;
321 p_input->pf_open = f.pf_open;
322 p_input->pf_close = f.pf_close;
323 p_input->pf_end = f.pf_end;
324 p_input->pf_read = f.pf_read;
325 p_input->pf_set_area = f.pf_set_area;
326 p_input->pf_demux = f.pf_demux;
327 p_input->pf_new_packet = f.pf_new_packet;
328 p_input->pf_new_pes = f.pf_new_pes;
329 p_input->pf_delete_packet = f.pf_delete_packet;
330 p_input->pf_delete_pes = f.pf_delete_pes;
331 p_input->pf_rewind = f.pf_rewind;
332 p_input->pf_seek = f.pf_seek;
334 p_input->pf_open( p_input );
336 if( p_input->b_error )
338 /* We barfed -- exit nicely */
339 p_input->pf_close( p_input );
340 module_Unneed( p_main->p_bank, p_input->p_input_module );
344 p_input->pf_init( p_input );
346 *p_input->pi_status = THREAD_READY;
351 /*****************************************************************************
352 * ErrorThread: RunThread() error loop
353 *****************************************************************************
354 * This function is called when an error occured during thread main's loop.
355 *****************************************************************************/
356 static void ErrorThread( input_thread_t *p_input )
358 while( !p_input->b_die )
361 msleep( INPUT_IDLE_SLEEP );
365 /*****************************************************************************
366 * EndThread: end the input thread
367 *****************************************************************************/
368 static void EndThread( input_thread_t * p_input )
370 int * pi_status; /* thread status */
373 pi_status = p_input->pi_status;
374 *pi_status = THREAD_END;
378 struct tms cpu_usage;
381 intf_Msg("input stats: cpu usage (user: %d, system: %d)",
382 cpu_usage.tms_utime, cpu_usage.tms_stime);
386 /* Free all ES and destroy all decoder threads */
387 input_EndStream( p_input );
389 /* Free demultiplexer's data */
390 p_input->pf_end( p_input );
393 p_input->pf_close( p_input );
395 /* Release modules */
396 module_Unneed( p_main->p_bank, p_input->p_input_module );
400 /*****************************************************************************
401 * DestroyThread: destroy the input thread
402 *****************************************************************************/
403 static void DestroyThread( input_thread_t * p_input )
405 int * pi_status; /* thread status */
408 pi_status = p_input->pi_status;
410 /* Destroy Mutex locks */
411 vlc_mutex_destroy( &p_input->stream.control.control_lock );
412 vlc_mutex_destroy( &p_input->stream.stream_lock );
414 /* Free input structure */
418 *pi_status = THREAD_OVER;
421 /*****************************************************************************
422 * input_FileOpen : open a file descriptor
423 *****************************************************************************/
424 void input_FileOpen( input_thread_t * p_input )
426 struct stat stat_info;
429 char *psz_name = p_input->p_source;
431 /* FIXME: this code ought to be in the plugin so that code can
432 * be shared with the *_Probe function */
433 if( ( i_stat = stat( psz_name, &stat_info ) ) == (-1) )
435 int i_size = strlen( psz_name );
438 && !strncasecmp( psz_name, "dvd:", 4 ) )
440 /* get rid of the 'dvd:' stuff and try again */
442 i_stat = stat( psz_name, &stat_info );
444 else if( ( i_size > 5 )
445 && !strncasecmp( psz_name, "file:", 5 ) )
447 /* get rid of the 'file:' stuff and try again */
449 i_stat = stat( psz_name, &stat_info );
454 intf_ErrMsg( "input error: cannot stat() file `%s' (%s)",
455 psz_name, strerror(errno));
456 p_input->b_error = 1;
461 vlc_mutex_lock( &p_input->stream.stream_lock );
463 /* If we are here we can control the pace... */
464 p_input->stream.b_pace_control = 1;
466 if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
467 || S_ISBLK(stat_info.st_mode) )
469 p_input->stream.b_seekable = 1;
470 p_input->stream.p_selected_area->i_size = stat_info.st_size;
472 else if( S_ISFIFO(stat_info.st_mode)
474 || S_ISSOCK(stat_info.st_mode)
478 p_input->stream.b_seekable = 0;
479 p_input->stream.p_selected_area->i_size = 0;
483 vlc_mutex_unlock( &p_input->stream.stream_lock );
484 intf_ErrMsg( "input error: unknown file type for `%s'",
486 p_input->b_error = 1;
490 p_input->stream.p_selected_area->i_tell = 0;
491 vlc_mutex_unlock( &p_input->stream.stream_lock );
493 intf_Msg( "input: opening %s", p_input->p_source );
494 if( (p_input->i_handle = open( psz_name,
495 /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
497 intf_ErrMsg( "input error: cannot open file (%s)", strerror(errno) );
498 p_input->b_error = 1;
504 /*****************************************************************************
505 * input_FileClose : close a file descriptor
506 *****************************************************************************/
507 void input_FileClose( input_thread_t * p_input )
509 close( p_input->i_handle );
516 /*****************************************************************************
517 * input_NetworkOpen : open a network socket
518 *****************************************************************************/
519 void input_NetworkOpen( input_thread_t * p_input )
522 int i_option_value, i_port;
523 struct sockaddr_in s_socket;
524 boolean_t b_broadcast;
526 /* FIXME : we don't handle channels for the moment */
528 /* Get the remote server */
529 if( p_input->p_source == NULL )
531 p_input->p_source = main_GetPszVariable( INPUT_SERVER_VAR,
532 INPUT_SERVER_DEFAULT );
535 /* Open a SOCK_DGRAM (UDP) socket, in the AF_INET domain, automatic (0)
537 p_input->i_handle = socket( AF_INET, SOCK_DGRAM, 0 );
538 if( p_input->i_handle == -1 )
540 intf_ErrMsg("NetworkOpen : can't create socket : %s", strerror(errno));
541 p_input->b_error = 1;
545 /* We may want to reuse an already used socket */
547 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_REUSEADDR,
548 &i_option_value,sizeof( i_option_value ) ) == -1 )
550 intf_ErrMsg("NetworkOpen : can't configure socket (SO_REUSEADDR: %s)",
552 close( p_input->i_handle );
553 p_input->b_error = 1;
557 /* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s) to avoid
558 * packet loss caused by scheduling problems */
559 i_option_value = 524288;
560 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_RCVBUF, &i_option_value,
561 sizeof( i_option_value ) ) == -1 )
563 intf_ErrMsg("NetworkOpen : can't configure socket (SO_RCVBUF: %s)",
565 close( p_input->i_handle );
566 p_input->b_error = 1;
570 /* Get details about what we are supposed to do */
571 b_broadcast = (boolean_t)main_GetIntVariable( INPUT_BROADCAST_VAR, 0 );
572 i_port = main_GetIntVariable( INPUT_PORT_VAR, INPUT_PORT_DEFAULT );
574 /* TODO : here deal with channel stufs */
576 /* Build the local socket */
577 if ( input_BuildLocalAddr( &s_socket, i_port, b_broadcast )
580 close( p_input->i_handle );
581 p_input->b_error = 1;
586 if( bind( p_input->i_handle, (struct sockaddr *)&s_socket,
587 sizeof( s_socket ) ) < 0 )
589 intf_ErrMsg("NetworkOpen: can't bind socket (%s)", strerror(errno));
590 close( p_input->i_handle );
591 p_input->b_error = 1;
595 /* Build socket for remote connection */
596 if ( input_BuildRemoteAddr( &s_socket, p_input->p_source )
599 close( p_input->i_handle );
600 p_input->b_error = 1;
604 /* And connect it ... should we really connect ? */
605 if( connect( p_input->i_handle, (struct sockaddr *) &s_socket,
606 sizeof( s_socket ) ) == (-1) )
608 intf_ErrMsg("NetworkOpen: can't connect socket" );
609 close( p_input->i_handle );
610 p_input->b_error = 1;
614 /* We can't pace control, but FIXME : bug in meuuh's code to sync PCR
615 * with the server. */
616 p_input->stream.b_pace_control = 1;
621 /*****************************************************************************
622 * input_NetworkClose : close a network socket
623 *****************************************************************************/
624 void input_NetworkClose( input_thread_t * p_input )
626 close( p_input->i_handle );
627 /* FIXME: deal with channels */