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 1.93 2001/03/15 01:42:20 sam 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>
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 );
236 if( p_input->stream.p_selected_area->i_seek != NO_SEEK )
238 if( p_input->stream.b_seekable && p_input->pf_seek != NULL )
240 p_input->pf_seek( p_input,
241 p_input->stream.p_selected_area->i_seek );
243 for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
245 pgrm_descriptor_t * p_pgrm
246 = p_input->stream.pp_programs[i];
247 /* Escape all decoders for the stream discontinuity they
249 input_EscapeDiscontinuity( p_input, p_pgrm );
251 /* Reinitialize synchro. */
252 p_pgrm->i_synchro_state = SYNCHRO_REINIT;
255 p_input->stream.p_selected_area->i_seek = NO_SEEK;
257 vlc_mutex_unlock( &p_input->stream.stream_lock );
259 i_error = p_input->pf_read( p_input, pp_packets );
261 /* Demultiplex read packets. */
262 for( i = 0; i < p_input->i_read_once && pp_packets[i] != NULL; i++ )
264 p_input->pf_demux( p_input, pp_packets[i] );
271 /* End of file - we do not set b_die because only the
272 * interface is allowed to do so. */
273 intf_WarnMsg( 1, "End of file reached" );
278 p_input->b_error = 1;
283 if( p_input->b_error || p_input->b_eof )
285 ErrorThread( p_input );
288 EndThread( p_input );
290 DestroyThread( p_input );
292 intf_DbgMsg("Thread end");
295 /*****************************************************************************
296 * InitThread: init the input Thread
297 *****************************************************************************/
298 static int InitThread( input_thread_t * p_input )
302 /* Initialize statistics */
303 p_input->c_loops = 0;
304 p_input->c_bytes = 0;
305 p_input->c_payload_bytes = 0;
306 p_input->c_packets_read = 0;
307 p_input->c_packets_trashed = 0;
310 p_input->p_input_module = module_Need( p_main->p_bank,
311 MODULE_CAPABILITY_INPUT,
312 (probedata_t *)p_input );
314 if( p_input->p_input_module == NULL )
316 intf_ErrMsg( "input error: no suitable input module for `%s'",
321 #define f p_input->p_input_module->p_functions->input.functions.input
322 p_input->pf_init = f.pf_init;
323 p_input->pf_open = f.pf_open;
324 p_input->pf_close = f.pf_close;
325 p_input->pf_end = f.pf_end;
326 p_input->pf_read = f.pf_read;
327 p_input->pf_set_area = f.pf_set_area;
328 p_input->pf_demux = f.pf_demux;
329 p_input->pf_new_packet = f.pf_new_packet;
330 p_input->pf_new_pes = f.pf_new_pes;
331 p_input->pf_delete_packet = f.pf_delete_packet;
332 p_input->pf_delete_pes = f.pf_delete_pes;
333 p_input->pf_rewind = f.pf_rewind;
334 p_input->pf_seek = f.pf_seek;
336 p_input->pf_open( p_input );
338 if( p_input->b_error )
340 /* We barfed -- exit nicely */
341 p_input->pf_close( p_input );
342 module_Unneed( p_main->p_bank, p_input->p_input_module );
346 p_input->pf_init( p_input );
348 *p_input->pi_status = THREAD_READY;
353 /*****************************************************************************
354 * ErrorThread: RunThread() error loop
355 *****************************************************************************
356 * This function is called when an error occured during thread main's loop.
357 *****************************************************************************/
358 static void ErrorThread( input_thread_t *p_input )
360 while( !p_input->b_die )
363 msleep( INPUT_IDLE_SLEEP );
367 /*****************************************************************************
368 * EndThread: end the input thread
369 *****************************************************************************/
370 static void EndThread( input_thread_t * p_input )
372 int * pi_status; /* thread status */
375 pi_status = p_input->pi_status;
376 *pi_status = THREAD_END;
380 struct tms cpu_usage;
383 intf_Msg("input stats: cpu usage (user: %d, system: %d)",
384 cpu_usage.tms_utime, cpu_usage.tms_stime);
388 /* Free all ES and destroy all decoder threads */
389 input_EndStream( p_input );
391 /* Free demultiplexer's data */
392 p_input->pf_end( p_input );
395 p_input->pf_close( p_input );
397 /* Release modules */
398 module_Unneed( p_main->p_bank, p_input->p_input_module );
402 /*****************************************************************************
403 * DestroyThread: destroy the input thread
404 *****************************************************************************/
405 static void DestroyThread( input_thread_t * p_input )
407 int * pi_status; /* thread status */
410 pi_status = p_input->pi_status;
412 /* Destroy Mutex locks */
413 vlc_mutex_destroy( &p_input->stream.control.control_lock );
414 vlc_mutex_destroy( &p_input->stream.stream_lock );
416 /* Free input structure */
420 *pi_status = THREAD_OVER;
423 /*****************************************************************************
424 * input_FileOpen : open a file descriptor
425 *****************************************************************************/
426 void input_FileOpen( input_thread_t * p_input )
428 struct stat stat_info;
431 char *psz_name = p_input->p_source;
433 /* FIXME: this code ought to be in the plugin so that code can
434 * be shared with the *_Probe function */
435 if( ( i_stat = stat( psz_name, &stat_info ) ) == (-1) )
437 int i_size = strlen( psz_name );
440 && !strncasecmp( psz_name, "dvd:", 4 ) )
442 /* get rid of the 'dvd:' stuff and try again */
444 i_stat = stat( psz_name, &stat_info );
446 else if( ( i_size > 5 )
447 && !strncasecmp( psz_name, "file:", 5 ) )
449 /* get rid of the 'file:' stuff and try again */
451 i_stat = stat( psz_name, &stat_info );
456 intf_ErrMsg( "input error: cannot stat() file `%s' (%s)",
457 psz_name, strerror(errno));
458 p_input->b_error = 1;
463 vlc_mutex_lock( &p_input->stream.stream_lock );
465 /* If we are here we can control the pace... */
466 p_input->stream.b_pace_control = 1;
468 if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
469 || S_ISBLK(stat_info.st_mode) )
471 p_input->stream.b_seekable = 1;
472 p_input->stream.p_selected_area->i_size = stat_info.st_size;
474 else if( S_ISFIFO(stat_info.st_mode)
476 || S_ISSOCK(stat_info.st_mode)
480 p_input->stream.b_seekable = 0;
481 p_input->stream.p_selected_area->i_size = 0;
485 vlc_mutex_unlock( &p_input->stream.stream_lock );
486 intf_ErrMsg( "input error: unknown file type for `%s'",
488 p_input->b_error = 1;
492 p_input->stream.p_selected_area->i_tell = 0;
493 vlc_mutex_unlock( &p_input->stream.stream_lock );
495 intf_Msg( "input: opening %s", p_input->p_source );
496 if( (p_input->i_handle = open( psz_name,
497 /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
499 intf_ErrMsg( "input error: cannot open file (%s)", strerror(errno) );
500 p_input->b_error = 1;
506 /*****************************************************************************
507 * input_FileClose : close a file descriptor
508 *****************************************************************************/
509 void input_FileClose( input_thread_t * p_input )
511 close( p_input->i_handle );
518 /*****************************************************************************
519 * input_NetworkOpen : open a network socket
520 *****************************************************************************/
521 void input_NetworkOpen( input_thread_t * p_input )
524 int i_option_value, i_port;
525 struct sockaddr_in s_socket;
526 boolean_t b_broadcast;
528 /* FIXME : we don't handle channels for the moment */
530 /* Get the remote server */
531 if( p_input->p_source == NULL )
533 p_input->p_source = main_GetPszVariable( INPUT_SERVER_VAR,
534 INPUT_SERVER_DEFAULT );
537 /* Open a SOCK_DGRAM (UDP) socket, in the AF_INET domain, automatic (0)
539 p_input->i_handle = socket( AF_INET, SOCK_DGRAM, 0 );
540 if( p_input->i_handle == -1 )
542 intf_ErrMsg("NetworkOpen : can't create socket : %s", strerror(errno));
543 p_input->b_error = 1;
547 /* We may want to reuse an already used socket */
549 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_REUSEADDR,
550 &i_option_value,sizeof( i_option_value ) ) == -1 )
552 intf_ErrMsg("NetworkOpen : can't configure socket (SO_REUSEADDR: %s)",
554 close( p_input->i_handle );
555 p_input->b_error = 1;
559 /* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s) to avoid
560 * packet loss caused by scheduling problems */
561 i_option_value = 524288;
562 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_RCVBUF, &i_option_value,
563 sizeof( i_option_value ) ) == -1 )
565 intf_ErrMsg("NetworkOpen : can't configure socket (SO_RCVBUF: %s)",
567 close( p_input->i_handle );
568 p_input->b_error = 1;
572 /* Get details about what we are supposed to do */
573 b_broadcast = (boolean_t)main_GetIntVariable( INPUT_BROADCAST_VAR, 0 );
574 i_port = main_GetIntVariable( INPUT_PORT_VAR, INPUT_PORT_DEFAULT );
576 /* TODO : here deal with channel stufs */
578 /* Build the local socket */
579 if ( network_BuildLocalAddr( &s_socket, i_port, b_broadcast )
582 close( p_input->i_handle );
583 p_input->b_error = 1;
588 if( bind( p_input->i_handle, (struct sockaddr *)&s_socket,
589 sizeof( s_socket ) ) < 0 )
591 intf_ErrMsg("NetworkOpen: can't bind socket (%s)", strerror(errno));
592 close( p_input->i_handle );
593 p_input->b_error = 1;
597 /* Build socket for remote connection */
598 if ( network_BuildRemoteAddr( &s_socket, p_input->p_source )
601 close( p_input->i_handle );
602 p_input->b_error = 1;
606 /* And connect it ... should we really connect ? */
607 if( connect( p_input->i_handle, (struct sockaddr *) &s_socket,
608 sizeof( s_socket ) ) == (-1) )
610 intf_ErrMsg("NetworkOpen: can't connect socket" );
611 close( p_input->i_handle );
612 p_input->b_error = 1;
616 /* We can't pace control, but FIXME : bug in meuuh's code to sync PCR
617 * with the server. */
618 p_input->stream.b_pace_control = 1;
623 /*****************************************************************************
624 * input_NetworkClose : close a network socket
625 *****************************************************************************/
626 void input_NetworkClose( input_thread_t * p_input )
628 close( p_input->i_handle );
629 /* FIXME: deal with channels */