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 1.60 2000/12/20 16:04:31 massiot Exp $
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>
40 # include <sys/times.h>
50 #include "stream_control.h"
51 #include "input_ext-intf.h"
52 #include "input_ext-dec.h"
56 /*****************************************************************************
58 *****************************************************************************/
59 static void RunThread ( input_thread_t *p_input );
60 static void InitThread ( input_thread_t *p_input );
61 static void ErrorThread ( input_thread_t *p_input );
62 static void EndThread ( input_thread_t *p_input );
63 static void NetworkOpen ( input_thread_t *p_input );
64 static void FileOpen ( input_thread_t *p_input );
66 /*****************************************************************************
67 * input_CreateThread: creates a new input thread
68 *****************************************************************************
69 * This function creates a new input, and returns a pointer
70 * to its description. On error, it returns NULL.
71 * If pi_status is NULL, then the function will block until the thread is ready.
72 * If not, it will be updated using one of the THREAD_* constants.
73 *****************************************************************************/
74 input_thread_t *input_CreateThread ( input_config_t * p_config, int *pi_status )
76 input_thread_t * p_input; /* thread descriptor */
77 int i_status; /* thread status */
80 /* Allocate descriptor */
82 p_input = (input_thread_t *)malloc( sizeof(input_thread_t) );
85 intf_ErrMsg("error: %s\n", strerror(errno));
90 /* Initialize thread properties */
93 /* I have never understood that stuff --Meuuh */
94 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
95 *p_input->pi_status = THREAD_CREATE;
96 p_input->p_config = p_config;
98 /* Initialize stream description */
99 for( i = 0; i < INPUT_MAX_SELECTED_ES; i++ )
101 p_input->pp_selected_es[i] = NULL;
103 for( i= 0; i < INPUT_MAX_ES; i++ )
105 p_input->p_es[i].i_id = EMPTY_ID;
107 p_input->stream.i_pgrm_number = 0;
109 /* Initialize stream control properties. */
110 p_input->stream.control.i_status = PLAYING_S;
111 p_input->stream.control.i_rate = DEFAULT_RATE;
112 p_input->stream.control.i_ref_sysdate = 0;
113 p_input->stream.control.i_ref_clock = 0;
114 p_input->stream.control.b_mute = 0;
115 p_input->stream.control.b_bw = 0;
117 /* Create thread and set locks. */
118 vlc_mutex_init( &p_input->stream.stream_lock );
119 vlc_mutex_init( &p_input->stream.control.control_lock );
120 if( vlc_thread_create( &p_input->thread_id, "input", (void *) RunThread,
123 intf_ErrMsg("error: %s\n", strerror(errno) );
129 /* If status is NULL, wait until the thread is created */
130 if( pi_status == NULL )
134 msleep( THREAD_SLEEP );
135 } while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
136 && (i_status != THREAD_FATAL) );
137 if( i_status != THREAD_READY )
145 /*****************************************************************************
146 * input_DestroyThread: mark an input thread as zombie
147 *****************************************************************************
148 * This function should not return until the thread is effectively cancelled.
149 *****************************************************************************/
150 void input_DestroyThread( input_thread_t *p_input, int *pi_status )
152 int i_status; /* thread status */
155 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
156 *p_input->pi_status = THREAD_DESTROY;
158 /* Request thread destruction */
161 /* If status is NULL, wait until thread has been destroyed */
162 if( pi_status == NULL )
166 msleep( THREAD_SLEEP );
167 } while ( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
168 && (i_status != THREAD_FATAL) );
172 /*****************************************************************************
173 * RunThread: main thread loop
174 *****************************************************************************
175 * Thread in charge of processing the network packets and demultiplexing.
176 *****************************************************************************/
177 static void RunThread( input_thread_t *p_input )
179 data_packet_t * pp_packets[INPUT_READ_ONCE];
182 InitThread( p_input );
184 while( !p_input->b_die && !p_input->b_error )
190 vlc_mutex_lock( &p_input->stream.control.control_lock );
191 if( p_input->stream.control.i_status == BACKWARD_S
192 && p_input->p_plugin->pf_rewind != NULL )
194 p_input->p_plugin->pf_rewind( p_input );
195 /* FIXME: probably don't do it every loop, but when ? */
197 vlc_mutex_unlock( &p_input->stream.control.control_lock );
199 i_error = p_input->p_plugin->pf_read( p_input, pp_packets );
201 /* Demultiplex read packets. */
202 for( i = 0; i < INPUT_READ_ONCE && pp_packets[i] != NULL; i++ )
204 p_input->p_plugin->pf_demux( p_input, pp_packets[i] );
212 intf_WarnMsg( 1, "End of file reached" );
213 /* FIXME: don't treat that as an error */
215 p_input->b_error = 1;
219 if( p_input->b_error )
221 ErrorThread( p_input );
224 EndThread( p_input );
225 intf_DbgMsg("Thread end");
228 /*****************************************************************************
229 * InitThread: init the input thread
230 *****************************************************************************/
231 input_capabilities_t * PSKludge( void );
232 static void InitThread( input_thread_t * p_input )
234 /* Initialize default settings for spawned decoders */
235 p_input->p_default_aout = p_input->p_config->p_default_aout;
236 p_input->p_default_vout = p_input->p_config->p_default_vout;
239 /* Initialize statistics */
240 p_input->c_loops = 0;
241 p_input->c_bytes = 0;
242 p_input->c_payload_bytes = 0;
243 p_input->c_packets_read = 0;
244 p_input->c_packets_trashed = 0;
247 /* Use the appropriate input method */
248 switch( p_input->p_config->i_method )
250 case INPUT_METHOD_FILE: /* file methods */
253 case INPUT_METHOD_VLAN_BCAST: /* vlan network method */
254 /* if( !p_main->b_vlans )
256 intf_ErrMsg("error: vlans are not activated\n");
260 /* ... pass through */
261 case INPUT_METHOD_UCAST: /* network methods */
262 case INPUT_METHOD_MCAST:
263 case INPUT_METHOD_BCAST:
264 NetworkOpen( p_input );
268 intf_ErrMsg("Unknow input method");
269 free( p_input->p_config );
270 p_input->b_error = 1;
275 free( p_input->p_config );
277 /* Probe plugin (FIXME: load plugins before & write this) */
278 p_input->p_plugin = PSKludge();
279 p_input->p_plugin->pf_init( p_input );
281 *p_input->pi_status = THREAD_READY;
284 /*****************************************************************************
285 * ErrorThread: RunThread() error loop
286 *****************************************************************************
287 * This function is called when an error occured during thread main's loop.
288 *****************************************************************************/
289 static void ErrorThread( input_thread_t *p_input )
291 while( !p_input->b_die )
294 msleep( INPUT_IDLE_SLEEP );
298 /*****************************************************************************
299 * EndThread: end the input thread
300 *****************************************************************************/
301 static void EndThread( input_thread_t * p_input )
303 int * pi_status; /* thread status */
304 int i_es_loop; /* es index */
307 pi_status = p_input->pi_status;
308 *pi_status = THREAD_END;
312 struct tms cpu_usage;
315 intf_Msg("input stats: cpu usage (user: %d, system: %d)\n",
316 cpu_usage.tms_utime, cpu_usage.tms_stime);
320 /* Destroy all decoder threads */
322 (i_es_loop < INPUT_MAX_ES)
323 && (p_input->pp_selected_es[i_es_loop] != NULL) ;
326 p_input->pp_selected_es[i_es_loop]->p_decoder_fifo->b_die = 1;
327 /* Make sure the thread leaves the GetByte() function */
328 vlc_mutex_lock( &p_input->pp_selected_es[i_es_loop]->p_decoder_fifo->data_lock);
329 vlc_cond_signal( &p_input->pp_selected_es[i_es_loop]->p_decoder_fifo->data_wait );
330 vlc_mutex_unlock( &p_input->pp_selected_es[i_es_loop]->p_decoder_fifo->data_lock );
332 /* Waiting for the thread to exit */
333 vlc_thread_join( p_input->pp_selected_es[i_es_loop]->thread_id );
334 free( p_input->pp_selected_es[i_es_loop]->p_decoder_fifo );
337 /* Free demultiplexer's data */
340 *pi_status = THREAD_OVER;
343 /*****************************************************************************
344 * NetworkOpen : open a network socket descriptor
345 *****************************************************************************/
346 static void NetworkOpen( input_thread_t * p_input )
348 /* straight copy & paste of input_network.c of input-I */
350 /* We cannot rewind nor lseek() */
351 p_input->stream.b_seekable = 0;
352 /* We cannot control the pace */
353 p_input->stream.b_pace_control = 0;
356 /*****************************************************************************
357 * FileOpen : open a file descriptor
358 *****************************************************************************/
359 static void FileOpen( input_thread_t * p_input )
361 struct stat stat_info;
363 #define p_config p_input->p_config
365 if( !strncmp( p_config->p_source, "-", 1 ) )
368 p_input->i_handle = 0;
370 vlc_mutex_lock( &p_input->stream.stream_lock );
371 p_input->stream.b_pace_control = 1;
372 p_input->stream.b_seekable = 0;
373 p_input->stream.i_size = 0;
374 p_input->stream.i_tell = 0;
375 vlc_mutex_unlock( &p_input->stream.stream_lock );
379 if( stat( p_config->p_source, &stat_info ) == (-1) )
381 intf_ErrMsg("Cannot stat() file %s (%s)", p_config->p_source,
383 p_input->b_error = 1;
387 vlc_mutex_lock( &p_input->stream.stream_lock );
389 /* If we are here we can control the pace... */
390 p_input->stream.b_pace_control = 1;
392 if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
393 || S_ISBLK(stat_info.st_mode) )
395 p_input->stream.b_seekable = 1;
396 p_input->stream.i_size = stat_info.st_size;
398 else if( S_ISFIFO(stat_info.st_mode) || S_ISSOCK(stat_info.st_mode) )
400 p_input->stream.b_seekable = 0;
401 p_input->stream.i_size = 0;
405 vlc_mutex_unlock( &p_input->stream.stream_lock );
406 intf_ErrMsg("Unknown file type");
407 p_input->b_error = 1;
411 p_input->stream.i_tell = 0;
412 vlc_mutex_unlock( &p_input->stream.stream_lock );
414 intf_Msg( "Opening file %s", p_config->p_source );
415 if( (p_input->i_handle = open( p_config->p_source,
416 /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
418 intf_ErrMsg("Cannot open file (%s)", strerror(errno));
419 p_input->b_error = 1;