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 1.59 2000/12/19 19:08:51 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];
181 InitThread( p_input );
183 while( !p_input->b_die && !p_input->b_error )
189 vlc_mutex_lock( &p_input->stream.control.control_lock );
190 if( p_input->stream.control.i_status == BACKWARD_S
191 && p_input->p_plugin->pf_rewind != NULL )
193 p_input->p_plugin->pf_rewind( p_input );
194 /* FIXME: probably don't do it every loop, but when ? */
196 vlc_mutex_unlock( &p_input->stream.control.control_lock );
198 p_input->p_plugin->pf_read( p_input, pp_packets );
199 if( !p_input->b_error )
203 for( i = 0; i < INPUT_READ_ONCE && pp_packets[i] != NULL; i++ )
205 p_input->p_plugin->pf_demux( p_input, pp_packets[i] );
210 if( p_input->b_error )
212 ErrorThread( p_input );
215 EndThread( p_input );
216 intf_DbgMsg("Thread end");
219 /*****************************************************************************
220 * InitThread: init the input thread
221 *****************************************************************************/
222 input_capabilities_t * PSKludge( void );
223 static void InitThread( input_thread_t * p_input )
225 /* Initialize default settings for spawned decoders */
226 p_input->p_default_aout = p_input->p_config->p_default_aout;
227 p_input->p_default_vout = p_input->p_config->p_default_vout;
230 /* Initialize statistics */
231 p_input->c_loops = 0;
232 p_input->c_bytes = 0;
233 p_input->c_payload_bytes = 0;
234 p_input->c_packets_read = 0;
235 p_input->c_packets_trashed = 0;
238 /* Use the appropriate input method */
239 switch( p_input->p_config->i_method )
241 case INPUT_METHOD_FILE: /* file methods */
244 case INPUT_METHOD_VLAN_BCAST: /* vlan network method */
245 /* if( !p_main->b_vlans )
247 intf_ErrMsg("error: vlans are not activated\n");
251 /* ... pass through */
252 case INPUT_METHOD_UCAST: /* network methods */
253 case INPUT_METHOD_MCAST:
254 case INPUT_METHOD_BCAST:
255 NetworkOpen( p_input );
259 intf_ErrMsg("Unknow input method");
260 free( p_input->p_config );
261 p_input->b_error = 1;
266 free( p_input->p_config );
268 /* Probe plugin (FIXME: load plugins before & write this) */
269 p_input->p_plugin = PSKludge();
270 p_input->p_plugin->pf_init( p_input );
272 *p_input->pi_status = THREAD_READY;
275 /*****************************************************************************
276 * ErrorThread: RunThread() error loop
277 *****************************************************************************
278 * This function is called when an error occured during thread main's loop.
279 *****************************************************************************/
280 static void ErrorThread( input_thread_t *p_input )
282 while( !p_input->b_die )
285 msleep( INPUT_IDLE_SLEEP );
289 /*****************************************************************************
290 * EndThread: end the input thread
291 *****************************************************************************/
292 static void EndThread( input_thread_t * p_input )
294 int * pi_status; /* thread status */
295 int i_es_loop; /* es index */
298 pi_status = p_input->pi_status;
299 *pi_status = THREAD_END;
303 struct tms cpu_usage;
306 intf_Msg("input stats: cpu usage (user: %d, system: %d)\n",
307 cpu_usage.tms_utime, cpu_usage.tms_stime);
311 /* Destroy all decoder threads */
313 (i_es_loop < INPUT_MAX_ES)
314 && (p_input->pp_selected_es[i_es_loop] != NULL) ;
317 p_input->pp_selected_es[i_es_loop]->p_decoder_fifo->b_die = 1;
318 /* Make sure the thread leaves the GetByte() function */
319 vlc_mutex_lock( &p_input->pp_selected_es[i_es_loop]->p_decoder_fifo->data_lock);
320 vlc_cond_signal( &p_input->pp_selected_es[i_es_loop]->p_decoder_fifo->data_wait );
321 vlc_mutex_unlock( &p_input->pp_selected_es[i_es_loop]->p_decoder_fifo->data_lock );
323 /* Waiting for the thread to exit */
324 vlc_thread_join( p_input->pp_selected_es[i_es_loop]->thread_id );
325 free( p_input->pp_selected_es[i_es_loop]->p_decoder_fifo );
328 /* Free demultiplexer's data */
331 *pi_status = THREAD_OVER;
334 /*****************************************************************************
335 * NetworkOpen : open a network socket descriptor
336 *****************************************************************************/
337 static void NetworkOpen( input_thread_t * p_input )
339 /* straight copy & paste of input_network.c of input-I */
341 /* We cannot rewind nor lseek() */
342 p_input->stream.b_seekable = 0;
343 /* We cannot control the pace */
344 p_input->stream.b_pace_control = 0;
347 /*****************************************************************************
348 * FileOpen : open a file descriptor
349 *****************************************************************************/
350 static void FileOpen( input_thread_t * p_input )
352 struct stat stat_info;
354 #define p_config p_input->p_config
356 if( !strncmp( p_config->p_source, "-", 1 ) )
359 p_input->i_handle = 0;
361 vlc_mutex_lock( &p_input->stream.stream_lock );
362 p_input->stream.b_pace_control = 1;
363 p_input->stream.b_seekable = 0;
364 p_input->stream.i_size = 0;
365 p_input->stream.i_tell = 0;
366 vlc_mutex_unlock( &p_input->stream.stream_lock );
370 if( stat( p_config->p_source, &stat_info ) == (-1) )
372 intf_ErrMsg("Cannot stat() file %s (%s)", p_config->p_source,
374 p_input->b_error = 1;
378 vlc_mutex_lock( &p_input->stream.stream_lock );
380 /* If we are here we can control the pace... */
381 p_input->stream.b_pace_control = 1;
383 if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
384 || S_ISBLK(stat_info.st_mode) )
386 p_input->stream.b_seekable = 1;
387 p_input->stream.i_size = stat_info.st_size;
389 else if( S_ISFIFO(stat_info.st_mode) || S_ISSOCK(stat_info.st_mode) )
391 p_input->stream.b_seekable = 0;
392 p_input->stream.i_size = 0;
396 vlc_mutex_unlock( &p_input->stream.stream_lock );
397 intf_ErrMsg("Unknown file type");
398 p_input->b_error = 1;
402 p_input->stream.i_tell = 0;
403 vlc_mutex_unlock( &p_input->stream.stream_lock );
405 intf_Msg( "Opening file %s", p_config->p_source );
406 if( (p_input->i_handle = open( p_config->p_source,
407 /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
409 intf_ErrMsg("Cannot open file (%s)", strerror(errno));
410 p_input->b_error = 1;