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 1.73 2001/01/24 19:05:55 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 );
65 static void DvdOpen ( input_thread_t *p_input );
67 /*****************************************************************************
68 * input_CreateThread: creates a new input thread
69 *****************************************************************************
70 * This function creates a new input, and returns a pointer
71 * to its description. On error, it returns NULL.
72 * If pi_status is NULL, then the function will block until the thread is ready.
73 * If not, it will be updated using one of the THREAD_* constants.
74 *****************************************************************************/
75 input_thread_t *input_CreateThread ( input_config_t * p_config, int *pi_status )
77 input_thread_t * p_input; /* thread descriptor */
78 int i_status; /* thread status */
80 /* Allocate descriptor */
81 p_input = (input_thread_t *)malloc( sizeof(input_thread_t) );
84 intf_ErrMsg( "input error: can't allocate input thread (%s)",
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 p_input->stream.i_es_number = 0;
100 p_input->stream.i_selected_es_number = 0;
101 p_input->stream.i_pgrm_number = 0;
103 /* Initialize stream control properties. */
104 p_input->stream.control.i_status = PLAYING_S;
105 p_input->stream.control.i_rate = DEFAULT_RATE;
106 p_input->stream.control.b_mute = 0;
107 p_input->stream.control.b_bw = 0;
109 /* Create thread and set locks. */
110 vlc_mutex_init( &p_input->stream.stream_lock );
111 vlc_mutex_init( &p_input->stream.control.control_lock );
112 if( vlc_thread_create( &p_input->thread_id, "input", (void *) RunThread,
115 intf_ErrMsg( "input error: can't create input thread (%s)",
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 input_capabilities_t * DVDKludge( void );
226 static void InitThread( input_thread_t * p_input )
228 /* Initialize default settings for spawned decoders */
229 p_input->p_default_aout = p_input->p_config->p_default_aout;
230 p_input->p_default_vout = p_input->p_config->p_default_vout;
233 /* Initialize statistics */
234 p_input->c_loops = 0;
235 p_input->c_bytes = 0;
236 p_input->c_payload_bytes = 0;
237 p_input->c_packets_read = 0;
238 p_input->c_packets_trashed = 0;
241 /* Use the appropriate input method */
242 switch( p_input->p_config->i_method )
244 case INPUT_METHOD_FILE: /* file methods */
246 /* Probe plugin (FIXME: load plugins before & write this) */
247 p_input->p_plugin = PSKludge();
249 case INPUT_METHOD_DVD: /* DVD method */
252 p_input->p_plugin = DVDKludge();
254 case INPUT_METHOD_VLAN_BCAST: /* vlan network method */
255 /* if( !p_main->b_vlans )
257 intf_ErrMsg("input error: vlans are not activated");
261 /* ... pass through */
262 case INPUT_METHOD_UCAST: /* network methods */
263 case INPUT_METHOD_MCAST:
264 case INPUT_METHOD_BCAST:
265 NetworkOpen( p_input );
269 intf_ErrMsg( "input error: unknow method 0x%.4x",
270 p_input->p_config->i_method );
271 free( p_input->p_config );
272 p_input->b_error = 1;
277 free( p_input->p_config );
279 if( !p_input->b_error )
281 p_input->p_plugin->pf_init( p_input );
284 *p_input->pi_status = THREAD_READY;
287 /*****************************************************************************
288 * ErrorThread: RunThread() error loop
289 *****************************************************************************
290 * This function is called when an error occured during thread main's loop.
291 *****************************************************************************/
292 static void ErrorThread( input_thread_t *p_input )
294 while( !p_input->b_die )
297 msleep( INPUT_IDLE_SLEEP );
301 /*****************************************************************************
302 * EndThread: end the input thread
303 *****************************************************************************/
304 static void EndThread( input_thread_t * p_input )
306 int * pi_status; /* thread status */
309 pi_status = p_input->pi_status;
310 *pi_status = THREAD_END;
314 struct tms cpu_usage;
317 intf_Msg("input stats: cpu usage (user: %d, system: %d)",
318 cpu_usage.tms_utime, cpu_usage.tms_stime);
322 /* Free all ES and destroy all decoder threads */
323 input_EndStream( p_input );
325 /* Free demultiplexer's data */
326 p_input->p_plugin->pf_end( p_input );
327 free( p_input->p_plugin );
329 /* Destroy Mutex locks */
330 vlc_mutex_destroy( &p_input->stream.control.control_lock );
331 vlc_mutex_destroy( &p_input->stream.stream_lock );
333 /* Free input structure */
337 *pi_status = THREAD_OVER;
340 /*****************************************************************************
341 * NetworkOpen : open a network socket descriptor
342 *****************************************************************************/
343 static void NetworkOpen( input_thread_t * p_input )
345 /* straight copy & paste of input_network.c of input-I */
347 /* We cannot rewind nor lseek() */
348 p_input->stream.b_seekable = 0;
349 /* We cannot control the pace */
350 p_input->stream.b_pace_control = 0;
353 /*****************************************************************************
354 * FileOpen : open a file descriptor
355 *****************************************************************************/
356 static void FileOpen( input_thread_t * p_input )
358 struct stat stat_info;
360 #define p_config p_input->p_config
362 if( stat( p_config->p_source, &stat_info ) == (-1) )
364 intf_ErrMsg( "input error: cannot stat() file `%s' (%s)",
365 p_config->p_source, strerror(errno));
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( "input error: unknown file type for `%s'",
390 p_config->p_source );
391 p_input->b_error = 1;
395 p_input->stream.i_tell = 0;
396 vlc_mutex_unlock( &p_input->stream.stream_lock );
398 intf_Msg( "input: opening file %s", p_config->p_source );
399 if( (p_input->i_handle = open( p_config->p_source,
400 /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
402 intf_ErrMsg( "input error: cannot open file (%s)", strerror(errno) );
403 p_input->b_error = 1;
410 /*****************************************************************************
411 * DvdOpen : open the dvd device
412 *****************************************************************************/
413 static void DvdOpen( input_thread_t * p_input )
415 intf_Msg( "input: opening DVD %s", p_input->p_config->p_source );
416 if( (p_input->i_handle = open( p_input->p_config->p_source,
417 O_RDONLY| O_NONBLOCK |O_LARGEFILE )) == (-1) )
419 intf_ErrMsg( "input error: cannot open device (%s)", strerror(errno) );
420 p_input->b_error = 1;
424 vlc_mutex_lock( &p_input->stream.stream_lock );
426 p_input->stream.b_pace_control = 1;
427 p_input->stream.b_seekable = 1;
428 p_input->stream.i_size = 0;
429 p_input->stream.i_tell = 0;
431 vlc_mutex_unlock( &p_input->stream.stream_lock );