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 1.96 2001/04/10 17:47:05 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>
39 /* Network functions */
41 #if !defined( SYS_BEOS ) && !defined( SYS_NTO )
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>
62 #include "intf_playlist.h"
64 #include "stream_control.h"
65 #include "input_ext-intf.h"
66 #include "input_ext-dec.h"
69 #include "interface.h"
73 /* #include <netutils.h> */
76 /*****************************************************************************
78 *****************************************************************************/
79 static void RunThread ( input_thread_t *p_input );
80 static int InitThread ( input_thread_t *p_input );
81 static void ErrorThread ( input_thread_t *p_input );
82 static void DestroyThread ( input_thread_t *p_input );
83 static void EndThread ( input_thread_t *p_input );
85 /*****************************************************************************
86 * input_CreateThread: creates a new input thread
87 *****************************************************************************
88 * This function creates a new input, and returns a pointer
89 * to its description. On error, it returns NULL.
90 * If pi_status is NULL, then the function will block until the thread is ready.
91 * If not, it will be updated using one of the THREAD_* constants.
92 *****************************************************************************/
93 input_thread_t *input_CreateThread ( playlist_item_t *p_item, int *pi_status )
95 input_thread_t * p_input; /* thread descriptor */
96 int i_status; /* thread status */
98 /* Allocate descriptor */
99 p_input = (input_thread_t *)malloc( sizeof(input_thread_t) );
100 if( p_input == NULL )
102 intf_ErrMsg( "input error: can't allocate input thread (%s)",
107 /* Packets read once */
108 p_input->i_read_once = INPUT_READ_ONCE;
110 /* Initialize thread properties */
112 p_input->b_error = 0;
116 p_input->p_source = p_item->psz_name;
118 /* I have never understood that stuff --Meuuh */
119 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
120 *p_input->pi_status = THREAD_CREATE;
122 /* Initialize stream description */
123 p_input->stream.i_es_number = 0;
124 p_input->stream.i_selected_es_number = 0;
125 p_input->stream.i_pgrm_number = 0;
126 p_input->stream.i_new_status = p_input->stream.i_new_rate = 0;
127 p_input->stream.i_mux_rate = 0;
129 p_input->stream.i_area_nb = 0;
130 p_input->stream.pp_areas = NULL;
131 /* By default there is one areas in a stream */
132 input_AddArea( p_input );
133 p_input->stream.p_selected_area = p_input->stream.pp_areas[0];
134 p_input->stream.p_selected_area->i_seek = NO_SEEK;
136 /* Initialize stream control properties. */
137 p_input->stream.control.i_status = PLAYING_S;
138 p_input->stream.control.i_rate = DEFAULT_RATE;
139 p_input->stream.control.b_mute = 0;
140 p_input->stream.control.b_bw = 0;
142 /* Initialize default settings for spawned decoders */
143 p_input->p_default_aout = p_main->p_aout;
144 p_input->p_default_vout = p_main->p_vout;
146 /* Create thread and set locks. */
147 vlc_mutex_init( &p_input->stream.stream_lock );
148 vlc_cond_init( &p_input->stream.stream_wait );
149 vlc_mutex_init( &p_input->stream.control.control_lock );
150 if( vlc_thread_create( &p_input->thread_id, "input", (void *) RunThread,
153 intf_ErrMsg( "input error: can't create input thread (%s)",
159 /* If status is NULL, wait until the thread is created */
160 if( pi_status == NULL )
164 msleep( THREAD_SLEEP );
165 } while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
166 && (i_status != THREAD_FATAL) );
167 if( i_status != THREAD_READY )
175 /*****************************************************************************
176 * input_DestroyThread: mark an input thread as zombie
177 *****************************************************************************
178 * This function should not return until the thread is effectively cancelled.
179 *****************************************************************************/
180 void input_DestroyThread( input_thread_t *p_input, int *pi_status )
182 int i_status; /* thread status */
185 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
186 *p_input->pi_status = THREAD_DESTROY;
188 /* Request thread destruction */
191 /* Make the thread exit of an eventual vlc_cond_wait() */
192 vlc_mutex_lock( &p_input->stream.stream_lock );
193 vlc_cond_signal( &p_input->stream.stream_wait );
194 vlc_mutex_unlock( &p_input->stream.stream_lock );
196 /* If status is NULL, wait until thread has been destroyed */
197 if( pi_status == NULL )
201 msleep( THREAD_SLEEP );
202 } while ( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
203 && (i_status != THREAD_FATAL) );
207 /*****************************************************************************
208 * RunThread: main thread loop
209 *****************************************************************************
210 * Thread in charge of processing the network packets and demultiplexing.
211 *****************************************************************************/
212 static void RunThread( input_thread_t *p_input )
216 if( InitThread( p_input ) )
219 /* If we failed, wait before we are killed, and exit */
220 *p_input->pi_status = THREAD_ERROR;
221 p_input->b_error = 1;
222 ErrorThread( p_input );
223 DestroyThread( p_input );
227 while( !p_input->b_die && !p_input->b_error && !p_input->b_eof )
229 data_packet_t * pp_packets[p_input->i_read_once];
235 vlc_mutex_lock( &p_input->stream.stream_lock );
237 if( p_input->stream.p_selected_area->i_seek != NO_SEEK )
239 if( p_input->stream.b_seekable && p_input->pf_seek != NULL )
241 p_input->pf_seek( p_input,
242 p_input->stream.p_selected_area->i_seek );
244 for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
246 pgrm_descriptor_t * p_pgrm
247 = p_input->stream.pp_programs[i];
248 /* Escape all decoders for the stream discontinuity they
250 input_EscapeDiscontinuity( p_input, p_pgrm );
252 /* Reinitialize synchro. */
253 p_pgrm->i_synchro_state = SYNCHRO_REINIT;
256 p_input->stream.p_selected_area->i_seek = NO_SEEK;
259 vlc_mutex_unlock( &p_input->stream.stream_lock );
261 i_error = p_input->pf_read( p_input, pp_packets );
263 /* Demultiplex read packets. */
264 for( i = 0; i < p_input->i_read_once && pp_packets[i] != NULL; i++ )
266 p_input->pf_demux( p_input, pp_packets[i] );
273 /* End of file - we do not set b_die because only the
274 * interface is allowed to do so. */
275 intf_WarnMsg( 1, "End of file reached" );
280 p_input->b_error = 1;
285 if( p_input->b_error || p_input->b_eof )
287 ErrorThread( p_input );
290 EndThread( p_input );
292 DestroyThread( p_input );
294 intf_DbgMsg("Thread end");
297 /*****************************************************************************
298 * InitThread: init the input Thread
299 *****************************************************************************/
300 static int InitThread( input_thread_t * p_input )
304 /* Initialize statistics */
305 p_input->c_loops = 0;
306 p_input->c_bytes = 0;
307 p_input->c_payload_bytes = 0;
308 p_input->c_packets_read = 0;
309 p_input->c_packets_trashed = 0;
312 p_input->p_input_module = module_Need( p_main->p_bank,
313 MODULE_CAPABILITY_INPUT,
314 (probedata_t *)p_input );
316 if( p_input->p_input_module == NULL )
318 intf_ErrMsg( "input error: no suitable input module for `%s'",
323 #define f p_input->p_input_module->p_functions->input.functions.input
324 p_input->pf_init = f.pf_init;
325 p_input->pf_open = f.pf_open;
326 p_input->pf_close = f.pf_close;
327 p_input->pf_end = f.pf_end;
328 p_input->pf_read = f.pf_read;
329 p_input->pf_set_area = f.pf_set_area;
330 p_input->pf_demux = f.pf_demux;
331 p_input->pf_new_packet = f.pf_new_packet;
332 p_input->pf_new_pes = f.pf_new_pes;
333 p_input->pf_delete_packet = f.pf_delete_packet;
334 p_input->pf_delete_pes = f.pf_delete_pes;
335 p_input->pf_rewind = f.pf_rewind;
336 p_input->pf_seek = f.pf_seek;
338 p_input->pf_open( p_input );
340 if( p_input->b_error )
342 /* We barfed -- exit nicely */
343 p_input->pf_close( p_input );
344 module_Unneed( p_main->p_bank, p_input->p_input_module );
348 p_input->pf_init( p_input );
350 if( p_input->b_error )
352 /* We barfed -- exit nicely */
353 p_input->pf_close( p_input );
354 module_Unneed( p_main->p_bank, p_input->p_input_module );
358 *p_input->pi_status = THREAD_READY;
363 /*****************************************************************************
364 * ErrorThread: RunThread() error loop
365 *****************************************************************************
366 * This function is called when an error occured during thread main's loop.
367 *****************************************************************************/
368 static void ErrorThread( input_thread_t *p_input )
370 while( !p_input->b_die )
373 msleep( INPUT_IDLE_SLEEP );
377 /*****************************************************************************
378 * EndThread: end the input thread
379 *****************************************************************************/
380 static void EndThread( input_thread_t * p_input )
382 int * pi_status; /* thread status */
385 pi_status = p_input->pi_status;
386 *pi_status = THREAD_END;
390 struct tms cpu_usage;
393 intf_Msg("input stats: cpu usage (user: %d, system: %d)",
394 cpu_usage.tms_utime, cpu_usage.tms_stime);
398 /* Free all ES and destroy all decoder threads */
399 input_EndStream( p_input );
401 /* Free demultiplexer's data */
402 p_input->pf_end( p_input );
405 p_input->pf_close( p_input );
407 /* Release modules */
408 module_Unneed( p_main->p_bank, p_input->p_input_module );
412 /*****************************************************************************
413 * DestroyThread: destroy the input thread
414 *****************************************************************************/
415 static void DestroyThread( input_thread_t * p_input )
417 int * pi_status; /* thread status */
420 pi_status = p_input->pi_status;
422 /* Destroy Mutex locks */
423 vlc_mutex_destroy( &p_input->stream.control.control_lock );
424 vlc_mutex_destroy( &p_input->stream.stream_lock );
426 /* Free input structure */
430 *pi_status = THREAD_OVER;
433 /*****************************************************************************
434 * input_FileOpen : open a file descriptor
435 *****************************************************************************/
436 void input_FileOpen( input_thread_t * p_input )
438 struct stat stat_info;
441 char *psz_name = p_input->p_source;
443 /* FIXME: this code ought to be in the plugin so that code can
444 * be shared with the *_Probe function */
445 if( ( i_stat = stat( psz_name, &stat_info ) ) == (-1) )
447 int i_size = strlen( psz_name );
450 && !strncasecmp( psz_name, "dvd:", 4 ) )
452 /* get rid of the 'dvd:' stuff and try again */
454 i_stat = stat( psz_name, &stat_info );
456 else if( ( i_size > 5 )
457 && !strncasecmp( psz_name, "file:", 5 ) )
459 /* get rid of the 'file:' stuff and try again */
461 i_stat = stat( psz_name, &stat_info );
466 intf_ErrMsg( "input error: cannot stat() file `%s' (%s)",
467 psz_name, strerror(errno));
468 p_input->b_error = 1;
473 vlc_mutex_lock( &p_input->stream.stream_lock );
475 /* If we are here we can control the pace... */
476 p_input->stream.b_pace_control = 1;
478 if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
479 || S_ISBLK(stat_info.st_mode) )
481 p_input->stream.b_seekable = 1;
482 p_input->stream.p_selected_area->i_size = stat_info.st_size;
484 else if( S_ISFIFO(stat_info.st_mode)
486 || S_ISSOCK(stat_info.st_mode)
490 p_input->stream.b_seekable = 0;
491 p_input->stream.p_selected_area->i_size = 0;
495 vlc_mutex_unlock( &p_input->stream.stream_lock );
496 intf_ErrMsg( "input error: unknown file type for `%s'",
498 p_input->b_error = 1;
502 p_input->stream.p_selected_area->i_tell = 0;
503 vlc_mutex_unlock( &p_input->stream.stream_lock );
505 intf_Msg( "input: opening %s", p_input->p_source );
506 if( (p_input->i_handle = open( psz_name,
507 /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
509 intf_ErrMsg( "input error: cannot open file (%s)", strerror(errno) );
510 p_input->b_error = 1;
516 /*****************************************************************************
517 * input_FileClose : close a file descriptor
518 *****************************************************************************/
519 void input_FileClose( input_thread_t * p_input )
521 close( p_input->i_handle );
527 #if !defined( SYS_BEOS ) && !defined( SYS_NTO )
528 /*****************************************************************************
529 * input_NetworkOpen : open a network socket
530 *****************************************************************************/
531 void input_NetworkOpen( input_thread_t * p_input )
534 int i_option_value, i_port;
535 struct sockaddr_in s_socket;
536 boolean_t b_broadcast;
538 /* FIXME : we don't handle channels for the moment */
540 /* Get the remote server */
541 if( p_input->p_source == NULL )
543 p_input->p_source = main_GetPszVariable( INPUT_SERVER_VAR,
544 INPUT_SERVER_DEFAULT );
547 /* Open a SOCK_DGRAM (UDP) socket, in the AF_INET domain, automatic (0)
549 p_input->i_handle = socket( AF_INET, SOCK_DGRAM, 0 );
550 if( p_input->i_handle == -1 )
552 intf_ErrMsg("NetworkOpen : can't create socket : %s", strerror(errno));
553 p_input->b_error = 1;
557 /* We may want to reuse an already used socket */
559 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_REUSEADDR,
560 &i_option_value,sizeof( i_option_value ) ) == -1 )
562 intf_ErrMsg("NetworkOpen : can't configure socket (SO_REUSEADDR: %s)",
564 close( p_input->i_handle );
565 p_input->b_error = 1;
569 /* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s) to avoid
570 * packet loss caused by scheduling problems */
571 i_option_value = 524288;
572 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_RCVBUF, &i_option_value,
573 sizeof( i_option_value ) ) == -1 )
575 intf_ErrMsg("NetworkOpen : can't configure socket (SO_RCVBUF: %s)",
577 close( p_input->i_handle );
578 p_input->b_error = 1;
582 /* Get details about what we are supposed to do */
583 b_broadcast = (boolean_t)main_GetIntVariable( INPUT_BROADCAST_VAR, 0 );
584 i_port = main_GetIntVariable( INPUT_PORT_VAR, INPUT_PORT_DEFAULT );
586 /* TODO : here deal with channel stufs */
588 /* Build the local socket */
589 if ( network_BuildLocalAddr( &s_socket, i_port, b_broadcast )
592 close( p_input->i_handle );
593 p_input->b_error = 1;
598 if( bind( p_input->i_handle, (struct sockaddr *)&s_socket,
599 sizeof( s_socket ) ) < 0 )
601 intf_ErrMsg("NetworkOpen: can't bind socket (%s)", strerror(errno));
602 close( p_input->i_handle );
603 p_input->b_error = 1;
607 /* Build socket for remote connection */
608 if ( network_BuildRemoteAddr( &s_socket, p_input->p_source )
611 close( p_input->i_handle );
612 p_input->b_error = 1;
616 /* And connect it ... should we really connect ? */
617 if( connect( p_input->i_handle, (struct sockaddr *) &s_socket,
618 sizeof( s_socket ) ) == (-1) )
620 intf_ErrMsg("NetworkOpen: can't connect socket" );
621 close( p_input->i_handle );
622 p_input->b_error = 1;
626 /* We can't pace control, but FIXME : bug in meuuh's code to sync PCR
627 * with the server. */
628 p_input->stream.b_pace_control = 1;
633 /*****************************************************************************
634 * input_NetworkClose : close a network socket
635 *****************************************************************************/
636 void input_NetworkClose( input_thread_t * p_input )
638 close( p_input->i_handle );
639 /* FIXME: deal with channels */