git.sesse.net Git - vlc/blob - src/input/input.c

   1 /*****************************************************************************
   2  * input.c: input thread
   3  * Read an MPEG2 stream, demultiplex and parse it before sending it to
   4  * decoders.
   5  *****************************************************************************
   6  * Copyright (C) 1998, 1999, 2000 VideoLAN
   7  * $Id: input.c,v 1.130 2001/08/27 16:13:20 massiot Exp $
   8  *
   9  * Authors: Christophe Massiot <massiot@via.ecp.fr>
  10  *
  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.
  15  *
  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.
  20  *
  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  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include "defs.h"
  30
  31 #include <stdlib.h>
  32 #include <sys/types.h>
  33 #include <sys/stat.h>
  34 #include <fcntl.h>
  35
  36 #ifdef HAVE_UNISTD_H
  37 #   include <unistd.h>
  38 #elif defined( _MSC_VER ) && defined( _WIN32 )
  39 #   include <io.h>
  40 #endif
  41
  42 #include <string.h>
  43 #include <errno.h>
  44
  45 #ifdef STRNCASECMP_IN_STRINGS_H
  46 #   include <strings.h>
  47 #endif
  48
  49 #ifdef WIN32
  50 #   include <winsock2.h>
  51 #elif !defined( SYS_BEOS ) && !defined( SYS_NTO )
  52 #   include <netdb.h>                                         /* hostent ... */
  53 #   include <sys/socket.h>
  54 #   include <netinet/in.h>
  55 #   include <arpa/inet.h>
  56 #   include <sys/types.h>
  57 #   include <sys/socket.h>
  58 #endif
  59
  60 #ifdef STATS
  61 #   include <sys/times.h>
  62 #endif
  63
  64 #include "config.h"
  65 #include "common.h"
  66 #include "threads.h"
  67 #include "mtime.h"
  68 #include "netutils.h"
  69 #include "modules.h"
  70
  71 #include "intf_msg.h"
  72 #include "intf_playlist.h"
  73
  74 #include "stream_control.h"
  75 #include "input_ext-intf.h"
  76 #include "input_ext-dec.h"
  77 #include "input_ext-plugins.h"
  78
  79 #include "interface.h"
  80
  81 #include "main.h"
  82
  83 /*****************************************************************************
  84  * Local prototypes
  85  *****************************************************************************/
  86 static void RunThread       ( input_thread_t *p_input );
  87 static  int InitThread      ( input_thread_t *p_input );
  88 static void ErrorThread     ( input_thread_t *p_input );
  89 static void DestroyThread   ( input_thread_t *p_input );
  90 static void EndThread       ( input_thread_t *p_input );
  91
  92 static void FileOpen        ( input_thread_t *p_input );
  93 static void FileClose       ( input_thread_t *p_input );
  94 #if !defined( SYS_BEOS ) && !defined( SYS_NTO )
  95 static void NetworkOpen     ( input_thread_t *p_input );
  96 static void NetworkClose    ( input_thread_t *p_input );
  97 #endif
  98
  99 /*****************************************************************************
 100  * input_CreateThread: creates a new input thread
 101  *****************************************************************************
 102  * This function creates a new input, and returns a pointer
 103  * to its description. On error, it returns NULL.
 104  * If pi_status is NULL, then the function will block until the thread is ready.
 105  * If not, it will be updated using one of the THREAD_* constants.
 106  *****************************************************************************/
 107 input_thread_t *input_CreateThread ( playlist_item_t *p_item, int *pi_status )
 108 {
 109     input_thread_t *    p_input;                        /* thread descriptor */
 110     int                 i_status;                           /* thread status */
 111
 112     /* Allocate descriptor */
 113     p_input = (input_thread_t *)malloc( sizeof(input_thread_t) );
 114     if( p_input == NULL )
 115     {
 116         intf_ErrMsg( "input error: can't allocate input thread (%s)",
 117                      strerror(errno) );
 118         return( NULL );
 119     }
 120
 121     /* Packets read once */
 122     p_input->i_read_once = INPUT_READ_ONCE;
 123
 124     /* Initialize thread properties */
 125     p_input->b_die              = 0;
 126     p_input->b_error            = 0;
 127     p_input->b_eof              = 0;
 128
 129     /* Set target */
 130     p_input->p_source           = p_item->psz_name;
 131
 132     /* I have never understood that stuff --Meuuh */
 133     p_input->pi_status          = (pi_status != NULL) ? pi_status : &i_status;
 134     *p_input->pi_status         = THREAD_CREATE;
 135
 136     /* Initialize stream description */
 137     p_input->stream.i_es_number = 0;
 138     p_input->stream.i_selected_es_number = 0;
 139     p_input->stream.i_pgrm_number = 0;
 140     p_input->stream.i_new_status = p_input->stream.i_new_rate = 0;
 141     p_input->stream.b_new_mute = MUTE_NO_CHANGE;
 142     p_input->stream.i_mux_rate = 0;
 143
 144     /* no stream, no area */
 145     p_input->stream.i_area_nb = 0;
 146     p_input->stream.pp_areas = NULL;
 147     p_input->stream.p_selected_area = NULL;
 148     p_input->stream.p_new_area = NULL;
 149
 150     /* By default there is one area in a stream */
 151     input_AddArea( p_input );
 152     p_input->stream.p_selected_area = p_input->stream.pp_areas[0];
 153
 154     /* Initialize stream control properties. */
 155     p_input->stream.control.i_status = PLAYING_S;
 156     p_input->stream.control.i_rate = DEFAULT_RATE;
 157     p_input->stream.control.b_mute = 0;
 158     p_input->stream.control.b_grayscale = main_GetIntVariable(
 159                             VOUT_GRAYSCALE_VAR, VOUT_GRAYSCALE_DEFAULT );
 160     p_input->stream.control.i_smp = main_GetIntVariable(
 161                             VDEC_SMP_VAR, VDEC_SMP_DEFAULT );
 162
 163     /* Setup callbacks */
 164     p_input->pf_file_open     = FileOpen;
 165     p_input->pf_file_close    = FileClose;
 166 #if !defined( SYS_BEOS ) && !defined( SYS_NTO )
 167     p_input->pf_network_open  = NetworkOpen;
 168     p_input->pf_network_close = NetworkClose;
 169 #endif
 170
 171     intf_WarnMsg( 1, "input: playlist item `%s'", p_input->p_source );
 172
 173     /* Create thread. */
 174     if( vlc_thread_create( &p_input->thread_id, "input", (void *) RunThread,
 175                            (void *) p_input ) )
 176     {
 177         intf_ErrMsg( "input error: can't create input thread (%s)",
 178                      strerror(errno) );
 179         free( p_input );
 180         return( NULL );
 181     }
 182
 183     /* If status is NULL, wait until the thread is created */
 184     if( pi_status == NULL )
 185     {
 186         do
 187         {
 188             msleep( THREAD_SLEEP );
 189         } while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
 190                 && (i_status != THREAD_FATAL) );
 191         if( i_status != THREAD_READY )
 192         {
 193             return( NULL );
 194         }
 195     }
 196     return( p_input );
 197 }
 198
 199 /*****************************************************************************
 200  * input_DestroyThread: mark an input thread as zombie
 201  *****************************************************************************
 202  * This function should not return until the thread is effectively cancelled.
 203  *****************************************************************************/
 204 void input_DestroyThread( input_thread_t *p_input, int *pi_status )
 205 {
 206     int         i_status;                                   /* thread status */
 207
 208     /* Set status */
 209     p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
 210     *p_input->pi_status = THREAD_DESTROY;
 211
 212     /* Request thread destruction */
 213     p_input->b_die = 1;
 214
 215     /* Make the thread exit of an eventual vlc_cond_wait() */
 216     vlc_mutex_lock( &p_input->stream.stream_lock );
 217     vlc_cond_signal( &p_input->stream.stream_wait );
 218     vlc_mutex_unlock( &p_input->stream.stream_lock );
 219
 220     /* If status is NULL, wait until thread has been destroyed */
 221     if( pi_status == NULL )
 222     {
 223         do
 224         {
 225             msleep( THREAD_SLEEP );
 226         } while ( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
 227                   && (i_status != THREAD_FATAL) );
 228     }
 229 }
 230
 231 /*****************************************************************************
 232  * RunThread: main thread loop
 233  *****************************************************************************
 234  * Thread in charge of processing the network packets and demultiplexing.
 235  *****************************************************************************/
 236 static void RunThread( input_thread_t *p_input )
 237 {
 238     int                     i_error, i;
 239     data_packet_t **        pp_packets;
 240
 241     if( InitThread( p_input ) )
 242     {
 243         /* If we failed, wait before we are killed, and exit */
 244         *p_input->pi_status = THREAD_ERROR;
 245         p_input->b_error = 1;
 246         ErrorThread( p_input );
 247         DestroyThread( p_input );
 248         return;
 249     }
 250
 251     /* initialization is completed */
 252     vlc_mutex_lock( &p_input->stream.stream_lock );
 253     p_input->stream.b_changed = 1;
 254     vlc_mutex_unlock( &p_input->stream.stream_lock );
 255
 256     pp_packets = (data_packet_t **) malloc( p_input->i_read_once *
 257                                         sizeof( data_packet_t * ) );
 258     if( pp_packets == NULL )
 259     {
 260         intf_ErrMsg( "input error: out of memory" );
 261         free( pp_packets );
 262         p_input->b_error = 1;
 263     }
 264
 265     while( !p_input->b_die && !p_input->b_error && !p_input->b_eof )
 266     {
 267 #ifdef STATS
 268         p_input->c_loops++;
 269 #endif
 270
 271         vlc_mutex_lock( &p_input->stream.stream_lock );
 272
 273         if( p_input->stream.p_new_area )
 274         {
 275             if( p_input->stream.b_seekable && p_input->pf_set_area != NULL )
 276             {
 277
 278                 p_input->pf_set_area( p_input, p_input->stream.p_new_area );
 279
 280                 for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 281                 {
 282                     pgrm_descriptor_t * p_pgrm
 283                                             = p_input->stream.pp_programs[i];
 284                     /* Escape all decoders for the stream discontinuity they
 285                      * will encounter. */
 286                     input_EscapeDiscontinuity( p_input, p_pgrm );
 287
 288                     /* Reinitialize synchro. */
 289                     p_pgrm->i_synchro_state = SYNCHRO_REINIT;
 290                 }
 291             }
 292             p_input->stream.p_new_area = NULL;
 293         }
 294
 295         if( p_input->stream.p_selected_area->i_seek != NO_SEEK )
 296         {
 297             if( p_input->stream.b_seekable && p_input->pf_seek != NULL )
 298             {
 299                 p_input->pf_seek( p_input,
 300                                   p_input->stream.p_selected_area->i_seek );
 301
 302                 for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
 303                 {
 304                     pgrm_descriptor_t * p_pgrm
 305                                             = p_input->stream.pp_programs[i];
 306                     /* Escape all decoders for the stream discontinuity they
 307                      * will encounter. */
 308                     input_EscapeDiscontinuity( p_input, p_pgrm );
 309
 310                     /* Reinitialize synchro. */
 311                     p_pgrm->i_synchro_state = SYNCHRO_REINIT;
 312                 }
 313             }
 314             p_input->stream.p_selected_area->i_seek = NO_SEEK;
 315         }
 316
 317         if( p_input->stream.p_removed_es )
 318         {
 319             input_UnselectES( p_input, p_input->stream.p_removed_es );
 320             p_input->stream.p_removed_es = NULL;
 321         }
 322
 323         if( p_input->stream.p_newly_selected_es )
 324         {
 325             input_SelectES( p_input, p_input->stream.p_newly_selected_es );
 326             p_input->stream.p_newly_selected_es = NULL;
 327         }
 328
 329         if( p_input->stream.b_new_mute != MUTE_NO_CHANGE )
 330         {
 331             if( p_input->stream.b_new_mute )
 332             {
 333                 input_EscapeAudioDiscontinuity( p_input );
 334             }
 335
 336             vlc_mutex_lock( &p_input->stream.control.control_lock );
 337             p_input->stream.control.b_mute = p_input->stream.b_new_mute;
 338             vlc_mutex_unlock( &p_input->stream.control.control_lock );
 339
 340             p_input->stream.b_new_mute = MUTE_NO_CHANGE;
 341         }
 342
 343         vlc_mutex_unlock( &p_input->stream.stream_lock );
 344
 345         i_error = p_input->pf_read( p_input, pp_packets );
 346
 347         /* Demultiplex read packets. */
 348         for( i = 0; i < p_input->i_read_once && pp_packets[i] != NULL; i++ )
 349         {
 350             p_input->pf_demux( p_input, pp_packets[i] );
 351         }
 352
 353         if( i_error )
 354         {
 355             if( i_error == 1 )
 356             {
 357                 /* End of file - we do not set b_die because only the
 358                  * interface is allowed to do so. */
 359                 intf_WarnMsg( 3, "input: EOF reached" );
 360                 p_input->b_eof = 1;
 361             }
 362             else
 363             {
 364                 p_input->b_error = 1;
 365             }
 366         }
 367     }
 368
 369     free( pp_packets );
 370
 371     if( p_input->b_error || p_input->b_eof )
 372     {
 373         ErrorThread( p_input );
 374     }
 375
 376     EndThread( p_input );
 377
 378     DestroyThread( p_input );
 379
 380     intf_DbgMsg("input: Thread end");
 381 }
 382
 383 /*****************************************************************************
 384  * InitThread: init the input Thread
 385  *****************************************************************************/
 386 static int InitThread( input_thread_t * p_input )
 387 {
 388
 389 #ifdef STATS
 390     /* Initialize statistics */
 391     p_input->c_loops                    = 0;
 392     p_input->c_bytes                    = 0;
 393     p_input->c_payload_bytes            = 0;
 394     p_input->c_packets_read             = 0;
 395     p_input->c_packets_trashed          = 0;
 396 #endif
 397
 398     /* Set locks. */
 399     vlc_mutex_init( &p_input->stream.stream_lock );
 400     vlc_cond_init( &p_input->stream.stream_wait );
 401     vlc_mutex_init( &p_input->stream.control.control_lock );
 402
 403     /* Default, might get overwritten */
 404     p_input->pf_open = p_input->pf_file_open;
 405     p_input->pf_close = p_input->pf_file_close;
 406
 407     p_input->p_input_module = module_Need( MODULE_CAPABILITY_INPUT,
 408                                            (probedata_t *)p_input );
 409
 410     if( p_input->p_input_module == NULL )
 411     {
 412         intf_ErrMsg( "input error: no suitable input module for `%s'",
 413                      p_input->p_source );
 414         return( -1 );
 415     }
 416
 417 #define f p_input->p_input_module->p_functions->input.functions.input
 418     p_input->pf_init          = f.pf_init;
 419     if( f.pf_open != NULL )
 420     {
 421         p_input->pf_open          = f.pf_open;
 422     }
 423     if( f.pf_close != NULL )
 424     {
 425         p_input->pf_close         = f.pf_close;
 426     }
 427     p_input->pf_end           = f.pf_end;
 428     p_input->pf_init_bit_stream= f.pf_init_bit_stream;
 429     p_input->pf_read          = f.pf_read;
 430     p_input->pf_set_area      = f.pf_set_area;
 431     p_input->pf_demux         = f.pf_demux;
 432     p_input->pf_new_packet    = f.pf_new_packet;
 433     p_input->pf_new_pes       = f.pf_new_pes;
 434     p_input->pf_delete_packet = f.pf_delete_packet;
 435     p_input->pf_delete_pes    = f.pf_delete_pes;
 436     p_input->pf_rewind        = f.pf_rewind;
 437     p_input->pf_seek          = f.pf_seek;
 438 #undef f
 439
 440     /* We found the appropriate plugin, open the target */
 441     p_input->pf_open( p_input );
 442
 443     if( p_input->b_error )
 444     {
 445         /* We barfed -- exit nicely */
 446         module_Unneed( p_input->p_input_module );
 447         return( -1 );
 448     }
 449
 450     p_input->pf_init( p_input );
 451
 452     if( p_input->b_error )
 453     {
 454         /* We barfed -- exit nicely */
 455         p_input->pf_close( p_input );
 456         module_Unneed( p_input->p_input_module );
 457         return( -1 );
 458     }
 459
 460     *p_input->pi_status = THREAD_READY;
 461
 462     return( 0 );
 463 }
 464
 465 /*****************************************************************************
 466  * ErrorThread: RunThread() error loop
 467  *****************************************************************************
 468  * This function is called when an error occured during thread main's loop.
 469  *****************************************************************************/
 470 static void ErrorThread( input_thread_t *p_input )
 471 {
 472     while( !p_input->b_die )
 473     {
 474         /* Sleep a while */
 475         msleep( INPUT_IDLE_SLEEP );
 476     }
 477 }
 478
 479 /*****************************************************************************
 480  * EndThread: end the input thread
 481  *****************************************************************************/
 482 static void EndThread( input_thread_t * p_input )
 483 {
 484     int *       pi_status;                                  /* thread status */
 485
 486     /* Store status */
 487     pi_status = p_input->pi_status;
 488     *pi_status = THREAD_END;
 489
 490 #ifdef STATS
 491     {
 492         struct tms cpu_usage;
 493         times( &cpu_usage );
 494
 495         intf_Msg( "input stats: cpu usage (user: %d, system: %d)",
 496                   cpu_usage.tms_utime, cpu_usage.tms_stime );
 497     }
 498 #endif
 499
 500     /* Free all ES and destroy all decoder threads */
 501     input_EndStream( p_input );
 502
 503     /* Free demultiplexer's data */
 504     p_input->pf_end( p_input );
 505
 506     /* Close stream */
 507     p_input->pf_close( p_input );
 508
 509     /* Release modules */
 510     module_Unneed( p_input->p_input_module );
 511
 512 }
 513
 514 /*****************************************************************************
 515  * DestroyThread: destroy the input thread
 516  *****************************************************************************/
 517 static void DestroyThread( input_thread_t * p_input )
 518 {
 519     int *       pi_status;                                  /* thread status */
 520
 521     /* Store status */
 522     pi_status = p_input->pi_status;
 523
 524     /* Destroy Mutex locks */
 525     vlc_mutex_destroy( &p_input->stream.control.control_lock );
 526     vlc_mutex_destroy( &p_input->stream.stream_lock );
 527
 528     /* Free input structure */
 529     free( p_input );
 530
 531     /* Update status */
 532     *pi_status = THREAD_OVER;
 533 }
 534
 535 /*****************************************************************************
 536  * FileOpen : open a file descriptor
 537  *****************************************************************************/
 538 static void FileOpen( input_thread_t * p_input )
 539 {
 540     struct stat         stat_info;
 541     int                 i_stat;
 542
 543     char *psz_name = p_input->p_source;
 544
 545     /* FIXME: this code ought to be in the plugin so that code can
 546      * be shared with the *_Probe function */
 547     if( ( i_stat = stat( psz_name, &stat_info ) ) == (-1) )
 548     {
 549         int i_size = strlen( psz_name );
 550
 551         if( ( i_size > 4 )
 552             && !strncasecmp( psz_name, "dvd:", 4 ) )
 553         {
 554             /* get rid of the 'dvd:' stuff and try again */
 555             psz_name += 4;
 556             i_stat = stat( psz_name, &stat_info );
 557         }
 558         else if( ( i_size > 5 )
 559                  && !strncasecmp( psz_name, "file:", 5 ) )
 560         {
 561             /* get rid of the 'file:' stuff and try again */
 562             psz_name += 5;
 563             i_stat = stat( psz_name, &stat_info );
 564         }
 565
 566         if( i_stat == (-1) )
 567         {
 568             intf_ErrMsg( "input error: cannot stat() file `%s' (%s)",
 569                          psz_name, strerror(errno));
 570             p_input->b_error = 1;
 571             return;
 572         }
 573     }
 574
 575     vlc_mutex_lock( &p_input->stream.stream_lock );
 576
 577     /* If we are here we can control the pace... */
 578     p_input->stream.b_pace_control = 1;
 579
 580     if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
 581          || S_ISBLK(stat_info.st_mode) )
 582     {
 583         p_input->stream.b_seekable = 1;
 584         p_input->stream.p_selected_area->i_size = stat_info.st_size;
 585     }
 586     else if( S_ISFIFO(stat_info.st_mode)
 587 #if !defined( SYS_BEOS ) && !defined( WIN32 )
 588              || S_ISSOCK(stat_info.st_mode)
 589 #endif
 590              )
 591     {
 592         p_input->stream.b_seekable = 0;
 593         p_input->stream.p_selected_area->i_size = 0;
 594     }
 595     else
 596     {
 597         vlc_mutex_unlock( &p_input->stream.stream_lock );
 598         intf_ErrMsg( "input error: unknown file type for `%s'",
 599                      psz_name );
 600         p_input->b_error = 1;
 601         return;
 602     }
 603
 604     p_input->stream.p_selected_area->i_tell = 0;
 605     vlc_mutex_unlock( &p_input->stream.stream_lock );
 606
 607     intf_WarnMsg( 2, "input: opening file `%s'", p_input->p_source );
 608     if( (p_input->i_handle = open( psz_name,
 609                                    /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
 610     {
 611         intf_ErrMsg( "input error: cannot open file (%s)", strerror(errno) );
 612         p_input->b_error = 1;
 613         return;
 614     }
 615
 616 }
 617
 618 /*****************************************************************************
 619  * FileClose : close a file descriptor
 620  *****************************************************************************/
 621 static void FileClose( input_thread_t * p_input )
 622 {
 623     intf_WarnMsg( 2, "input: closing file `%s'", p_input->p_source );
 624
 625     close( p_input->i_handle );
 626
 627     return;
 628 }
 629
 630 #if !defined( SYS_BEOS ) && !defined( SYS_NTO )
 631 /*****************************************************************************
 632  * NetworkOpen : open a network socket
 633  *****************************************************************************/
 634 static void NetworkOpen( input_thread_t * p_input )
 635 {
 636     char                *psz_server = NULL;
 637     char                *psz_broadcast = NULL;
 638     int                 i_port = 0;
 639     int                 i_opt;
 640     int                 i_opt_size;
 641     struct sockaddr_in  sock;
 642     unsigned int        i_mc_group;
 643
 644 #ifdef WIN32
 645     WSADATA Data;
 646     int i_err;
 647 #endif
 648
 649 #ifdef WIN32
 650     /* WinSock Library Init. */
 651     i_err = WSAStartup( MAKEWORD( 1, 1 ), &Data );
 652
 653     if( i_err )
 654     {
 655         intf_ErrMsg( "input: can't initiate WinSocks, error %i", i_err );
 656         return ;
 657     }
 658 #endif
 659
 660     /* Get the remote server */
 661     if( p_input->p_source != NULL )
 662     {
 663         psz_server = p_input->p_source;
 664
 665         /* Skip the protocol name */
 666         while( *psz_server && *psz_server != ':' )
 667         {
 668             psz_server++;
 669         }
 670
 671         /* Skip the "://" part */
 672         while( *psz_server && (*psz_server == ':' || *psz_server == '/') )
 673         {
 674             psz_server++;
 675         }
 676
 677         /* Found a server name */
 678         if( *psz_server )
 679         {
 680             char *psz_port = psz_server;
 681
 682             /* Skip the hostname part */
 683             while( *psz_port && *psz_port != ':' )
 684             {
 685                 psz_port++;
 686             }
 687
 688             /* Found a port name */
 689             if( *psz_port )
 690             {
 691                 /* Replace ':' with '\0' */
 692                 *psz_port = '\0';
 693                 psz_port++;
 694
 695                 psz_broadcast = psz_port;
 696                 while( *psz_broadcast && *psz_broadcast != ':' )
 697                 {
 698                     psz_broadcast++;
 699                 }
 700
 701                 if( *psz_broadcast )
 702                 {
 703                     *psz_broadcast = '\0';
 704                     psz_broadcast++;
 705                     while( *psz_broadcast && *psz_broadcast == ':' )
 706                     {
 707                         psz_broadcast++;
 708                     }
 709                 }
 710                 else
 711                 {
 712                     psz_broadcast = NULL;
 713                 }
 714
 715                 /* port before broadcast address */
 716                 if( *psz_port != ':' )
 717                 {
 718                     i_port = atoi( psz_port );
 719                 }
 720             }
 721         }
 722         else
 723         {
 724             psz_server = NULL;
 725         }
 726     }
 727
 728     /* Check that we got a valid server */
 729     if( psz_server == NULL )
 730     {
 731         psz_server = main_GetPszVariable( INPUT_SERVER_VAR,
 732                                           INPUT_SERVER_DEFAULT );
 733     }
 734
 735     /* Check that we got a valid port */
 736     if( i_port == 0 )
 737     {
 738         i_port = main_GetIntVariable( INPUT_PORT_VAR, INPUT_PORT_DEFAULT );
 739     }
 740
 741     if( psz_broadcast == NULL )
 742     {
 743         /* Are we broadcasting ? */
 744         if( main_GetIntVariable( INPUT_BROADCAST_VAR,
 745                                  INPUT_BROADCAST_DEFAULT ) )
 746         {
 747             psz_broadcast = main_GetPszVariable( INPUT_BCAST_ADDR_VAR,
 748                                                  INPUT_BCAST_ADDR_DEFAULT );
 749         }
 750         else
 751         {
 752            psz_broadcast = NULL;
 753         }
 754     }
 755
 756     intf_WarnMsg( 2, "input: server=%s port=%d broadcast=%s",
 757                      psz_server, i_port, psz_broadcast );
 758
 759     /* Open a SOCK_DGRAM (UDP) socket, in the AF_INET domain, automatic (0)
 760      * protocol */
 761     p_input->i_handle = socket( AF_INET, SOCK_DGRAM, 0 );
 762     if( p_input->i_handle == -1 )
 763     {
 764         intf_ErrMsg( "input error: can't create socket (%s)", strerror(errno) );
 765         p_input->b_error = 1;
 766         return;
 767     }
 768
 769     /* We may want to reuse an already used socket */
 770     i_opt = 1;
 771     if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_REUSEADDR,
 772                     (void *) &i_opt, sizeof( i_opt ) ) == -1 )
 773     {
 774         intf_ErrMsg( "input error: can't configure socket (SO_REUSEADDR: %s)",
 775                      strerror(errno));
 776         close( p_input->i_handle );
 777         p_input->b_error = 1;
 778         return;
 779     }
 780
 781     /* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s) to avoid
 782      * packet loss caused by scheduling problems */
 783     i_opt = 0x80000;
 784     if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_RCVBUF,
 785                     (void *) &i_opt, sizeof( i_opt ) ) == -1 )
 786     {
 787         intf_ErrMsg( "input error: can't configure socket (SO_RCVBUF: %s)",
 788                      strerror(errno));
 789         close( p_input->i_handle );
 790         p_input->b_error = 1;
 791         return;
 792     }
 793
 794     /* Check if we really got what we have asked for, because Linux, etc.
 795      * will silently limit the max buffer size to net.core.rmem_max which
 796      * is typically only 65535 bytes */
 797     i_opt = 0;
 798     i_opt_size = sizeof( i_opt );
 799     if( getsockopt( p_input->i_handle, SOL_SOCKET, SO_RCVBUF,
 800                     (void*) &i_opt, &i_opt_size ) == -1 )
 801     {
 802         intf_ErrMsg( "input error: can't configure socket (SO_RCVBUF: %s)",
 803                      strerror(errno));
 804         close( p_input->i_handle );
 805         p_input->b_error = 1;
 806         return;
 807     }
 808
 809     if( i_opt < 0x80000 )
 810     {
 811         intf_ErrMsg( "input warning: socket receive buffer size just %d instead of %d bytes.\n",
 812                      i_opt, 0x80000 );
 813     }
 814
 815     /* Build the local socket */
 816     if ( network_BuildLocalAddr( &sock, i_port, psz_broadcast ) == -1 )
 817     {
 818         intf_ErrMsg( "input error: can't build local address" );
 819         close( p_input->i_handle );
 820         p_input->b_error = 1;
 821         return;
 822     }
 823
 824     /* Required for IP_ADD_MEMBERSHIP */
 825     i_mc_group = sock.sin_addr.s_addr;
 826
 827 #if defined( WIN32 )
 828     if ( psz_broadcast != NULL )
 829     {
 830         sock.sin_addr.s_addr = INADDR_ANY;
 831     }
 832 #define IN_MULTICAST(a)         IN_CLASSD(a)
 833 #endif
 834
 835     /* Bind it */
 836     if( bind( p_input->i_handle, (struct sockaddr *)&sock,
 837               sizeof( sock ) ) < 0 )
 838     {
 839         intf_ErrMsg( "input error: can't bind socket (%s)", strerror(errno) );
 840         close( p_input->i_handle );
 841         p_input->b_error = 1;
 842         return;
 843     }
 844
 845     /* Join the m/c group if sock is a multicast address */
 846     if( IN_MULTICAST( ntohl(i_mc_group) ) )
 847     {
 848         struct ip_mreq imr;
 849
 850         imr.imr_interface.s_addr = htonl(INADDR_ANY);
 851         imr.imr_multiaddr.s_addr = i_mc_group;
 852         if( setsockopt( p_input->i_handle, IPPROTO_IP,IP_ADD_MEMBERSHIP,
 853                         (char*)&imr, sizeof(struct ip_mreq) ) == -1 )
 854         {
 855             intf_ErrMsg( "input error: failed to join IP multicast group (%s)",
 856                          strerror(errno) );
 857             close( p_input->i_handle);
 858             p_input->b_error = 1;
 859             return;
 860         }
 861     }
 862
 863     /* Build socket for remote connection */
 864     if ( network_BuildRemoteAddr( &sock, psz_server ) == -1 )
 865     {
 866         intf_ErrMsg( "input error: can't build remote address" );
 867         close( p_input->i_handle );
 868         p_input->b_error = 1;
 869         return;
 870     }
 871
 872     /* And connect it */
 873     if( connect( p_input->i_handle, (struct sockaddr *) &sock,
 874                  sizeof( sock ) ) == (-1) )
 875     {
 876         intf_ErrMsg( "input error: can't connect socket (%s)",
 877                      strerror(errno) );
 878         close( p_input->i_handle );
 879         p_input->b_error = 1;
 880         return;
 881     }
 882
 883     p_input->stream.b_pace_control = 0;
 884     p_input->stream.b_seekable = 0;
 885
 886     intf_WarnMsg( 3, "input: successfully opened network mode" );
 887
 888     return;
 889 }
 890
 891 /*****************************************************************************
 892  * NetworkClose : close a network socket
 893  *****************************************************************************/
 894 static void NetworkClose( input_thread_t * p_input )
 895 {
 896     close( p_input->i_handle );
 897
 898 #ifdef WIN32
 899     WSACleanup();
 900 #endif
 901
 902 }
 903 #endif
 904