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 1.63 2000/12/21 19:24:26 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 */
79 /* Allocate descriptor */
81 p_input = (input_thread_t *)malloc( sizeof(input_thread_t) );
84 intf_ErrMsg("error: %s\n", strerror(errno));
89 /* Initialize thread properties */
92 /* I have never understood that stuff --Meuuh */
93 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
94 *p_input->pi_status = THREAD_CREATE;
95 p_input->p_config = p_config;
97 /* Initialize stream description */
98 p_input->stream.i_es_number = 0;
99 p_input->stream.i_selected_es_number = 0;
100 p_input->stream.i_pgrm_number = 0;
102 /* Initialize stream control properties. */
103 p_input->stream.control.i_status = PLAYING_S;
104 p_input->stream.control.i_rate = DEFAULT_RATE;
105 p_input->stream.control.i_ref_sysdate = 0;
106 p_input->stream.control.i_ref_clock = 0;
107 p_input->stream.control.b_mute = 0;
108 p_input->stream.control.b_bw = 0;
110 /* Create thread and set locks. */
111 vlc_mutex_init( &p_input->stream.stream_lock );
112 vlc_mutex_init( &p_input->stream.control.control_lock );
113 if( vlc_thread_create( &p_input->thread_id, "input", (void *) RunThread,
116 intf_ErrMsg("error: %s\n", strerror(errno) );
122 /* If status is NULL, wait until the thread is created */
123 if( pi_status == NULL )
127 msleep( THREAD_SLEEP );
128 } while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
129 && (i_status != THREAD_FATAL) );
130 if( i_status != THREAD_READY )
138 /*****************************************************************************
139 * input_DestroyThread: mark an input thread as zombie
140 *****************************************************************************
141 * This function should not return until the thread is effectively cancelled.
142 *****************************************************************************/
143 void input_DestroyThread( input_thread_t *p_input, int *pi_status )
145 int i_status; /* thread status */
148 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
149 *p_input->pi_status = THREAD_DESTROY;
151 /* Request thread destruction */
154 /* If status is NULL, wait until thread has been destroyed */
155 if( pi_status == NULL )
159 msleep( THREAD_SLEEP );
160 } while ( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
161 && (i_status != THREAD_FATAL) );
165 /*****************************************************************************
166 * RunThread: main thread loop
167 *****************************************************************************
168 * Thread in charge of processing the network packets and demultiplexing.
169 *****************************************************************************/
170 static void RunThread( input_thread_t *p_input )
172 data_packet_t * pp_packets[INPUT_READ_ONCE];
175 InitThread( p_input );
177 while( !p_input->b_die && !p_input->b_error )
183 vlc_mutex_lock( &p_input->stream.control.control_lock );
184 if( p_input->stream.control.i_status == BACKWARD_S
185 && p_input->p_plugin->pf_rewind != NULL )
187 p_input->p_plugin->pf_rewind( p_input );
188 /* FIXME: probably don't do it every loop, but when ? */
190 vlc_mutex_unlock( &p_input->stream.control.control_lock );
192 i_error = p_input->p_plugin->pf_read( p_input, pp_packets );
194 /* Demultiplex read packets. */
195 for( i = 0; i < INPUT_READ_ONCE && pp_packets[i] != NULL; i++ )
197 p_input->p_plugin->pf_demux( p_input, pp_packets[i] );
205 intf_WarnMsg( 1, "End of file reached" );
206 /* FIXME: don't treat that as an error */
208 p_input->b_error = 1;
212 if( p_input->b_error )
214 ErrorThread( p_input );
217 EndThread( p_input );
218 intf_DbgMsg("Thread end");
221 /*****************************************************************************
222 * InitThread: init the input thread
223 *****************************************************************************/
224 input_capabilities_t * PSKludge( void );
225 static void InitThread( input_thread_t * p_input )
227 /* Initialize default settings for spawned decoders */
228 p_input->p_default_aout = p_input->p_config->p_default_aout;
229 p_input->p_default_vout = p_input->p_config->p_default_vout;
232 /* Initialize statistics */
233 p_input->c_loops = 0;
234 p_input->c_bytes = 0;
235 p_input->c_payload_bytes = 0;
236 p_input->c_packets_read = 0;
237 p_input->c_packets_trashed = 0;
240 /* Use the appropriate input method */
241 switch( p_input->p_config->i_method )
243 case INPUT_METHOD_FILE: /* file methods */
246 case INPUT_METHOD_VLAN_BCAST: /* vlan network method */
247 /* if( !p_main->b_vlans )
249 intf_ErrMsg("error: vlans are not activated\n");
253 /* ... pass through */
254 case INPUT_METHOD_UCAST: /* network methods */
255 case INPUT_METHOD_MCAST:
256 case INPUT_METHOD_BCAST:
257 NetworkOpen( p_input );
261 intf_ErrMsg("Unknow input method");
262 free( p_input->p_config );
263 p_input->b_error = 1;
268 free( p_input->p_config );
270 /* Probe plugin (FIXME: load plugins before & write this) */
271 p_input->p_plugin = PSKludge();
272 p_input->p_plugin->pf_init( p_input );
274 *p_input->pi_status = THREAD_READY;
277 /*****************************************************************************
278 * ErrorThread: RunThread() error loop
279 *****************************************************************************
280 * This function is called when an error occured during thread main's loop.
281 *****************************************************************************/
282 static void ErrorThread( input_thread_t *p_input )
284 while( !p_input->b_die )
287 msleep( INPUT_IDLE_SLEEP );
291 /*****************************************************************************
292 * EndThread: end the input thread
293 *****************************************************************************/
294 static void EndThread( input_thread_t * p_input )
296 int * pi_status; /* thread status */
299 pi_status = p_input->pi_status;
300 *pi_status = THREAD_END;
304 struct tms cpu_usage;
307 intf_Msg("input stats: cpu usage (user: %d, system: %d)\n",
308 cpu_usage.tms_utime, cpu_usage.tms_stime);
312 /* Free all ES and destroy all decoder threads */
313 input_EndStream( p_input );
315 /* Free demultiplexer's data */
316 p_input->p_plugin->pf_end( p_input );
317 free( p_input->p_plugin );
319 /* Free input structure */
323 *pi_status = THREAD_OVER;
326 /*****************************************************************************
327 * NetworkOpen : open a network socket descriptor
328 *****************************************************************************/
329 static void NetworkOpen( input_thread_t * p_input )
331 /* straight copy & paste of input_network.c of input-I */
333 /* We cannot rewind nor lseek() */
334 p_input->stream.b_seekable = 0;
335 /* We cannot control the pace */
336 p_input->stream.b_pace_control = 0;
339 /*****************************************************************************
340 * FileOpen : open a file descriptor
341 *****************************************************************************/
342 static void FileOpen( input_thread_t * p_input )
344 struct stat stat_info;
346 #define p_config p_input->p_config
348 if( !strncmp( p_config->p_source, "-", 1 ) )
351 p_input->i_handle = 0;
353 vlc_mutex_lock( &p_input->stream.stream_lock );
354 p_input->stream.b_pace_control = 1;
355 p_input->stream.b_seekable = 0;
356 p_input->stream.i_size = 0;
357 p_input->stream.i_tell = 0;
358 vlc_mutex_unlock( &p_input->stream.stream_lock );
362 if( stat( p_config->p_source, &stat_info ) == (-1) )
364 intf_ErrMsg("Cannot stat() file %s (%s)", p_config->p_source,
366 p_input->b_error = 1;
370 vlc_mutex_lock( &p_input->stream.stream_lock );
372 /* If we are here we can control the pace... */
373 p_input->stream.b_pace_control = 1;
375 if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
376 || S_ISBLK(stat_info.st_mode) )
378 p_input->stream.b_seekable = 1;
379 p_input->stream.i_size = stat_info.st_size;
381 else if( S_ISFIFO(stat_info.st_mode) || S_ISSOCK(stat_info.st_mode) )
383 p_input->stream.b_seekable = 0;
384 p_input->stream.i_size = 0;
388 vlc_mutex_unlock( &p_input->stream.stream_lock );
389 intf_ErrMsg("Unknown file type");
390 p_input->b_error = 1;
394 p_input->stream.i_tell = 0;
395 vlc_mutex_unlock( &p_input->stream.stream_lock );
397 intf_Msg( "Opening file %s", p_config->p_source );
398 if( (p_input->i_handle = open( p_config->p_source,
399 /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
401 intf_ErrMsg("Cannot open file (%s)", strerror(errno));
402 p_input->b_error = 1;