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

   1 /*****************************************************************************
   2  * stream_output.c : stream output module
   3  *****************************************************************************
   4  * Copyright (C) 2002-2004 VideoLAN
   5  * $Id: stream_output.c,v 1.41 2004/03/03 20:39:53 gbazin Exp $
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Laurent Aimar <fenrir@via.ecp.fr>
   9  *          Eric Petit <titer@videolan.org>
  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 <stdlib.h>                                                /* free() */
  30 #include <stdio.h>                                              /* sprintf() */
  31 #include <string.h>                                            /* strerror() */
  32
  33 #include <vlc/vlc.h>
  34
  35 #include <vlc/sout.h>
  36 #undef DEBUG_BUFFER
  37 /*****************************************************************************
  38  * Local prototypes
  39  *****************************************************************************/
  40 static void sout_cfg_free( sout_cfg_t * );
  41
  42 #define sout_stream_url_to_chain( p, s ) _sout_stream_url_to_chain( VLC_OBJECT(p), s )
  43 static char *_sout_stream_url_to_chain( vlc_object_t *, char * );
  44
  45 /*
  46  * Generic MRL parser
  47  *
  48  */
  49
  50 typedef struct
  51 {
  52     char            *psz_access;
  53
  54     char            *psz_way;
  55
  56     char *psz_name;
  57 } mrl_t;
  58
  59 /* mrl_Parse: parse psz_mrl and fill p_mrl */
  60 static int  mrl_Parse( mrl_t *p_mrl, char *psz_mrl );
  61 /* mrl_Clean: clean p_mrl  after a call to mrl_Parse */
  62 static void mrl_Clean( mrl_t *p_mrl );
  63
  64 #define FREE( p ) if( p ) { free( p ); (p) = NULL; }
  65
  66 /*****************************************************************************
  67  * sout_NewInstance: creates a new stream output instance
  68  *****************************************************************************/
  69 sout_instance_t * __sout_NewInstance ( vlc_object_t *p_parent,
  70                                        char * psz_dest )
  71 {
  72     sout_instance_t *p_sout;
  73     vlc_value_t keep;
  74
  75     if( var_Get( p_parent, "sout-keep", &keep ) < 0 )
  76     {
  77         msg_Warn( p_parent, "cannot get sout-keep value" );
  78         keep.b_bool = VLC_FALSE;
  79     }
  80     else if( keep.b_bool )
  81     {
  82         msg_Warn( p_parent, "sout-keep true" );
  83         if( ( p_sout = vlc_object_find( p_parent, VLC_OBJECT_SOUT, FIND_ANYWHERE ) ) )
  84         {
  85             if( !strcmp( p_sout->psz_sout, psz_dest ) )
  86             {
  87                 msg_Warn( p_parent, "sout keep : reusing sout" );
  88                 msg_Warn( p_parent, "sout keep : you probably want to use gather stream_out" );
  89                 vlc_object_detach( p_sout );
  90                 vlc_object_attach( p_sout, p_parent );
  91                 vlc_object_release( p_sout );
  92                 return p_sout;
  93             }
  94             else
  95             {
  96                 msg_Warn( p_parent, "sout keep : destroying unusable sout" );
  97                 sout_DeleteInstance( p_sout );
  98             }
  99         }
 100     }
 101     else if( !keep.b_bool )
 102     {
 103         while( ( p_sout = vlc_object_find( p_parent, VLC_OBJECT_SOUT, FIND_PARENT ) ) )
 104         {
 105             msg_Warn( p_parent, "sout keep : destroying old sout" );
 106             sout_DeleteInstance( p_sout );
 107         }
 108     }
 109
 110     /* *** Allocate descriptor *** */
 111     p_sout = vlc_object_create( p_parent, VLC_OBJECT_SOUT );
 112     if( p_sout == NULL )
 113     {
 114         msg_Err( p_parent, "out of memory" );
 115         return NULL;
 116     }
 117
 118     /* *** init descriptor *** */
 119     p_sout->psz_sout    = strdup( psz_dest );
 120     p_sout->i_preheader = 0;
 121     p_sout->i_padding   = 0;
 122     p_sout->p_sys       = NULL;
 123
 124     vlc_mutex_init( p_sout, &p_sout->lock );
 125     if( psz_dest && psz_dest[0] == '#' )
 126     {
 127         p_sout->psz_chain = strdup( &psz_dest[1] );
 128     }
 129     else
 130     {
 131         p_sout->psz_chain = sout_stream_url_to_chain( p_sout, psz_dest );
 132         msg_Dbg( p_sout, "using sout chain=`%s'", p_sout->psz_chain );
 133     }
 134
 135     p_sout->p_stream = sout_stream_new( p_sout, p_sout->psz_chain );
 136
 137     if( p_sout->p_stream == NULL )
 138     {
 139         msg_Err( p_sout, "stream chained failed for `%s'", p_sout->psz_chain );
 140
 141         FREE( p_sout->psz_sout );
 142         FREE( p_sout->psz_chain );
 143
 144         vlc_object_destroy( p_sout );
 145         return( NULL );
 146     }
 147
 148     vlc_object_attach( p_sout, p_parent );
 149
 150     return p_sout;
 151 }
 152 /*****************************************************************************
 153  * sout_DeleteInstance: delete a previously allocated instance
 154  *****************************************************************************/
 155 void sout_DeleteInstance( sout_instance_t * p_sout )
 156 {
 157     /* Unlink object */
 158     vlc_object_detach( p_sout );
 159
 160     /* *** free all string *** */
 161     FREE( p_sout->psz_sout );
 162     FREE( p_sout->psz_chain );
 163
 164     sout_stream_delete( p_sout->p_stream );
 165     vlc_mutex_destroy( &p_sout->lock );
 166
 167     /* *** free structure *** */
 168     vlc_object_destroy( p_sout );
 169 }
 170
 171 /*****************************************************************************
 172  * Packetizer/Input
 173  *****************************************************************************/
 174 sout_packetizer_input_t *sout_InputNew( sout_instance_t *p_sout,
 175                                         es_format_t *p_fmt )
 176 {
 177     sout_packetizer_input_t *p_input;
 178
 179     msg_Dbg( p_sout, "adding a new input" );
 180
 181     /* *** create a packetizer input *** */
 182     p_input         = malloc( sizeof( sout_packetizer_input_t ) );
 183     p_input->p_sout = p_sout;
 184     p_input->p_fmt  = p_fmt;
 185
 186     if( p_fmt->i_codec == VLC_FOURCC( 'n', 'u', 'l', 'l' ) )
 187     {
 188         vlc_object_release( p_sout );
 189         return p_input;
 190     }
 191
 192     /* *** add it to the stream chain */
 193     vlc_mutex_lock( &p_sout->lock );
 194     p_input->id = p_sout->p_stream->pf_add( p_sout->p_stream, p_fmt );
 195     vlc_mutex_unlock( &p_sout->lock );
 196
 197     if( p_input->id == NULL )
 198     {
 199         free( p_input );
 200         return NULL;
 201     }
 202
 203     return( p_input );
 204 }
 205
 206
 207 int sout_InputDelete( sout_packetizer_input_t *p_input )
 208 {
 209     sout_instance_t     *p_sout = p_input->p_sout;
 210
 211     msg_Dbg( p_sout, "removing an input" );
 212
 213     if( p_input->p_fmt->i_codec != VLC_FOURCC( 'n', 'u', 'l', 'l' ) )
 214     {
 215         vlc_mutex_lock( &p_sout->lock );
 216         p_sout->p_stream->pf_del( p_sout->p_stream, p_input->id );
 217         vlc_mutex_unlock( &p_sout->lock );
 218     }
 219
 220     free( p_input );
 221
 222     return( VLC_SUCCESS);
 223 }
 224
 225 int sout_InputSendBuffer( sout_packetizer_input_t *p_input,
 226                           sout_buffer_t *p_buffer )
 227 {
 228     sout_instance_t     *p_sout = p_input->p_sout;
 229     int                 i_ret;
 230
 231     if( p_input->p_fmt->i_codec == VLC_FOURCC( 'n', 'u', 'l', 'l' ) )
 232     {
 233         sout_BufferDelete( p_input->p_sout, p_buffer );
 234         return VLC_SUCCESS;
 235     }
 236
 237     if( !p_buffer->i_dts )
 238     {
 239         msg_Warn( p_sout, "trying to send non-dated packet to stream output!");
 240         sout_BufferDelete( p_input->p_sout, p_buffer );
 241         return VLC_SUCCESS;
 242     }
 243
 244     vlc_mutex_lock( &p_sout->lock );
 245     i_ret = p_sout->p_stream->pf_send( p_sout->p_stream,
 246                                        p_input->id, p_buffer );
 247     vlc_mutex_unlock( &p_sout->lock );
 248
 249     return i_ret;
 250 }
 251
 252 /*****************************************************************************
 253  * sout_AccessOutNew: allocate a new access out
 254  *****************************************************************************/
 255 sout_access_out_t *sout_AccessOutNew( sout_instance_t *p_sout,
 256                                       char *psz_access, char *psz_name )
 257 {
 258     sout_access_out_t *p_access;
 259     char              *psz_next;
 260
 261     if( !( p_access = vlc_object_create( p_sout,
 262                                          sizeof( sout_access_out_t ) ) ) )
 263     {
 264         msg_Err( p_sout, "out of memory" );
 265         return NULL;
 266     }
 267
 268     psz_next = sout_cfg_parser( &p_access->psz_access, &p_access->p_cfg,
 269                                 psz_access );
 270     if( psz_next )
 271     {
 272         free( psz_next );
 273     }
 274     p_access->psz_name   = strdup( psz_name ? psz_name : "" );
 275     p_access->p_sout     = p_sout;
 276     p_access->p_sys = NULL;
 277     p_access->pf_seek    = NULL;
 278     p_access->pf_read    = NULL;
 279     p_access->pf_write   = NULL;
 280
 281     p_access->p_module   =
 282         module_Need( p_access, "sout access", p_access->psz_access, VLC_TRUE );
 283
 284     if( !p_access->p_module )
 285     {
 286         free( p_access->psz_access );
 287         free( p_access->psz_name );
 288         vlc_object_destroy( p_access );
 289         return( NULL );
 290     }
 291
 292     return p_access;
 293 }
 294 /*****************************************************************************
 295  * sout_AccessDelete: delete an access out
 296  *****************************************************************************/
 297 void sout_AccessOutDelete( sout_access_out_t *p_access )
 298 {
 299     if( p_access->p_module )
 300     {
 301         module_Unneed( p_access, p_access->p_module );
 302     }
 303     free( p_access->psz_access );
 304
 305     sout_cfg_free( p_access->p_cfg );
 306
 307     free( p_access->psz_name );
 308
 309     vlc_object_destroy( p_access );
 310 }
 311
 312 /*****************************************************************************
 313  * sout_AccessSeek:
 314  *****************************************************************************/
 315 int sout_AccessOutSeek( sout_access_out_t *p_access, off_t i_pos )
 316 {
 317     return p_access->pf_seek( p_access, i_pos );
 318 }
 319
 320 /*****************************************************************************
 321  * sout_AccessRead:
 322  *****************************************************************************/
 323 int sout_AccessOutRead( sout_access_out_t *p_access, sout_buffer_t *p_buffer )
 324 {
 325     return ( p_access->pf_read ?
 326              p_access->pf_read( p_access, p_buffer ) : VLC_EGENERIC );
 327 }
 328
 329 /*****************************************************************************
 330  * sout_AccessWrite:
 331  *****************************************************************************/
 332 int sout_AccessOutWrite( sout_access_out_t *p_access, sout_buffer_t *p_buffer )
 333 {
 334     return p_access->pf_write( p_access, p_buffer );
 335 }
 336
 337 /*****************************************************************************
 338  * MuxNew: allocate a new mux
 339  *****************************************************************************/
 340 sout_mux_t * sout_MuxNew         ( sout_instance_t *p_sout,
 341                                    char *psz_mux,
 342                                    sout_access_out_t *p_access )
 343 {
 344     sout_mux_t *p_mux;
 345     char       *psz_next;
 346
 347     p_mux = vlc_object_create( p_sout,
 348                                sizeof( sout_mux_t ) );
 349     if( p_mux == NULL )
 350     {
 351         msg_Err( p_sout, "out of memory" );
 352         return NULL;
 353     }
 354
 355     p_mux->p_sout       = p_sout;
 356     psz_next = sout_cfg_parser( &p_mux->psz_mux, &p_mux->p_cfg, psz_mux );
 357     if( psz_next )
 358     {
 359         free( psz_next );
 360     }
 361     p_mux->p_access     = p_access;
 362     p_mux->i_preheader  = 0;
 363     p_mux->pf_capacity  = NULL;
 364     p_mux->pf_addstream = NULL;
 365     p_mux->pf_delstream = NULL;
 366     p_mux->pf_mux       = NULL;
 367     p_mux->i_nb_inputs  = 0;
 368     p_mux->pp_inputs    = NULL;
 369
 370     p_mux->p_sys        = NULL;
 371
 372     p_mux->p_module     =
 373         module_Need( p_mux, "sout mux", p_mux->psz_mux, VLC_TRUE );
 374
 375     if( p_mux->p_module == NULL )
 376     {
 377         FREE( p_mux->psz_mux );
 378
 379         vlc_object_destroy( p_mux );
 380         return NULL;
 381     }
 382
 383     /* *** probe mux capacity *** */
 384     if( p_mux->pf_capacity )
 385     {
 386         int b_answer;
 387         if( p_mux->pf_capacity( p_mux,
 388                                 SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME, NULL,
 389                                 (void*)&b_answer ) != SOUT_MUX_CAP_ERR_OK )
 390         {
 391             b_answer = VLC_FALSE;
 392         }
 393         if( b_answer )
 394         {
 395             msg_Dbg( p_sout, "muxer support adding stream at any time" );
 396             p_mux->b_add_stream_any_time = VLC_TRUE;
 397             p_mux->b_waiting_stream = VLC_FALSE;
 398
 399             if( p_mux->pf_capacity( p_mux,
 400                                     SOUT_MUX_CAP_GET_ADD_STREAM_WAIT, NULL,
 401                                     (void*)&b_answer ) != SOUT_MUX_CAP_ERR_OK )
 402             {
 403                 b_answer = VLC_FALSE;
 404             }
 405             if( b_answer )
 406             {
 407                 msg_Dbg( p_sout, "muxer prefers waiting for all ES before "
 408                          "starting muxing" );
 409                 p_mux->b_waiting_stream = VLC_TRUE;
 410             }
 411         }
 412         else
 413         {
 414             p_mux->b_add_stream_any_time = VLC_FALSE;
 415             p_mux->b_waiting_stream = VLC_TRUE;
 416         }
 417     }
 418     else
 419     {
 420         p_mux->b_add_stream_any_time = VLC_FALSE;
 421         p_mux->b_waiting_stream = VLC_TRUE;
 422     }
 423     p_mux->i_add_stream_start = -1;
 424
 425     return p_mux;
 426 }
 427
 428 void sout_MuxDelete( sout_mux_t *p_mux )
 429 {
 430     if( p_mux->p_module )
 431     {
 432         module_Unneed( p_mux, p_mux->p_module );
 433     }
 434     free( p_mux->psz_mux );
 435
 436     sout_cfg_free( p_mux->p_cfg );
 437
 438     vlc_object_destroy( p_mux );
 439 }
 440
 441 sout_input_t *sout_MuxAddStream( sout_mux_t *p_mux, es_format_t *p_fmt )
 442 {
 443     sout_input_t *p_input;
 444
 445     if( !p_mux->b_add_stream_any_time && !p_mux->b_waiting_stream )
 446     {
 447         msg_Err( p_mux, "cannot add a new stream (unsuported while muxing "
 448                         "for this format)" );
 449         return NULL;
 450     }
 451     if( p_mux->i_add_stream_start < 0 )
 452     {
 453         /* we wait for one second */
 454         p_mux->i_add_stream_start = mdate();
 455     }
 456
 457     msg_Dbg( p_mux, "adding a new input" );
 458
 459     /* create a new sout input */
 460     p_input = malloc( sizeof( sout_input_t ) );
 461     p_input->p_sout = p_mux->p_sout;
 462     p_input->p_fmt  = p_fmt;
 463     p_input->p_fifo = sout_FifoCreate( p_mux->p_sout );
 464     p_input->p_sys  = NULL;
 465
 466     TAB_APPEND( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input );
 467     if( p_mux->pf_addstream( p_mux, p_input ) < 0 )
 468     {
 469             msg_Err( p_mux, "cannot add this stream" );
 470             TAB_REMOVE( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input );
 471             sout_FifoDestroy( p_mux->p_sout, p_input->p_fifo );
 472             free( p_input );
 473             return( NULL );
 474     }
 475
 476     return( p_input );
 477 }
 478
 479 void sout_MuxDeleteStream     ( sout_mux_t *p_mux,
 480                                 sout_input_t *p_input )
 481 {
 482     int i_index;
 483
 484     TAB_FIND( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input, i_index );
 485     if( i_index >= 0 )
 486     {
 487         if( p_mux->pf_delstream( p_mux, p_input ) < 0 )
 488         {
 489             msg_Err( p_mux, "cannot del this stream from mux" );
 490         }
 491
 492         /* remove the entry */
 493         TAB_REMOVE( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input );
 494
 495         if( p_mux->i_nb_inputs == 0 )
 496         {
 497             msg_Warn( p_mux, "no more input stream for this mux" );
 498         }
 499
 500         sout_FifoDestroy( p_mux->p_sout, p_input->p_fifo );
 501         free( p_input );
 502     }
 503 }
 504
 505 void sout_MuxSendBuffer       ( sout_mux_t    *p_mux,
 506                                 sout_input_t  *p_input,
 507                                 sout_buffer_t *p_buffer )
 508 {
 509     sout_FifoPut( p_input->p_fifo, p_buffer );
 510
 511     if( p_mux->b_waiting_stream )
 512     {
 513         if( p_mux->i_add_stream_start > 0 &&
 514             p_mux->i_add_stream_start + (mtime_t)1500000 < mdate() )
 515         {
 516             /* more than 1.5 second, start muxing */
 517             p_mux->b_waiting_stream = VLC_FALSE;
 518         }
 519         else
 520         {
 521             return;
 522         }
 523     }
 524     p_mux->pf_mux( p_mux );
 525 }
 526
 527
 528
 529 sout_fifo_t *sout_FifoCreate( sout_instance_t *p_sout )
 530 {
 531     sout_fifo_t *p_fifo;
 532
 533     if( !( p_fifo = malloc( sizeof( sout_fifo_t ) ) ) )
 534     {
 535         return( NULL );
 536     }
 537
 538     vlc_mutex_init( p_sout, &p_fifo->lock );
 539     vlc_cond_init ( p_sout, &p_fifo->wait );
 540     p_fifo->i_depth = 0;
 541     p_fifo->p_first = NULL;
 542     p_fifo->pp_last = &p_fifo->p_first;
 543
 544     return( p_fifo );
 545 }
 546
 547 void sout_FifoFree( sout_instance_t *p_sout, sout_fifo_t *p_fifo )
 548 {
 549     sout_buffer_t *p_buffer;
 550
 551     vlc_mutex_lock( &p_fifo->lock );
 552     p_buffer = p_fifo->p_first;
 553     while( p_buffer )
 554     {
 555         sout_buffer_t *p_next;
 556         p_next = p_buffer->p_next;
 557         sout_BufferDelete( p_sout, p_buffer );
 558         p_buffer = p_next;
 559     }
 560     vlc_mutex_unlock( &p_fifo->lock );
 561
 562     return;
 563 }
 564 void sout_FifoDestroy( sout_instance_t *p_sout, sout_fifo_t *p_fifo )
 565 {
 566     sout_FifoFree( p_sout, p_fifo );
 567     vlc_mutex_destroy( &p_fifo->lock );
 568     vlc_cond_destroy ( &p_fifo->wait );
 569
 570     free( p_fifo );
 571 }
 572
 573 void sout_FifoPut( sout_fifo_t *p_fifo, sout_buffer_t *p_buffer )
 574 {
 575     vlc_mutex_lock( &p_fifo->lock );
 576
 577     do
 578     {
 579         *p_fifo->pp_last = p_buffer;
 580         p_fifo->pp_last = &p_buffer->p_next;
 581         p_fifo->i_depth++;
 582
 583         p_buffer = p_buffer->p_next;
 584
 585     } while( p_buffer );
 586
 587     /* warm there is data in this fifo */
 588     vlc_cond_signal( &p_fifo->wait );
 589     vlc_mutex_unlock( &p_fifo->lock );
 590 }
 591
 592 sout_buffer_t *sout_FifoGet( sout_fifo_t *p_fifo )
 593 {
 594     sout_buffer_t *p_buffer;
 595
 596     vlc_mutex_lock( &p_fifo->lock );
 597
 598     if( p_fifo->p_first == NULL )
 599     {
 600         vlc_cond_wait( &p_fifo->wait, &p_fifo->lock );
 601     }
 602
 603     p_buffer = p_fifo->p_first;
 604
 605     p_fifo->p_first = p_buffer->p_next;
 606     p_fifo->i_depth--;
 607
 608     if( p_fifo->p_first == NULL )
 609     {
 610         p_fifo->pp_last = &p_fifo->p_first;
 611     }
 612
 613     vlc_mutex_unlock( &p_fifo->lock );
 614
 615     p_buffer->p_next = NULL;
 616     return( p_buffer );
 617 }
 618
 619 sout_buffer_t *sout_FifoShow( sout_fifo_t *p_fifo )
 620 {
 621     sout_buffer_t *p_buffer;
 622
 623     vlc_mutex_lock( &p_fifo->lock );
 624
 625     if( p_fifo->p_first == NULL )
 626     {
 627         vlc_cond_wait( &p_fifo->wait, &p_fifo->lock );
 628     }
 629
 630     p_buffer = p_fifo->p_first;
 631
 632     vlc_mutex_unlock( &p_fifo->lock );
 633
 634     return( p_buffer );
 635 }
 636
 637 sout_buffer_t *sout_BufferNew( sout_instance_t *p_sout, size_t i_size )
 638 {
 639     sout_buffer_t *p_buffer;
 640     size_t        i_preheader, i_padding;
 641
 642     p_buffer = malloc( sizeof( sout_buffer_t ) );
 643     i_preheader = p_sout->i_preheader;
 644     i_padding = p_sout->i_padding;
 645
 646 #ifdef DEBUG_BUFFER
 647     msg_Dbg( p_sout, "allocating an new buffer, size:%d, preheader:%d, "
 648              "padding:%d", (uint32_t)i_size, i_preheader, i_padding );
 649 #endif
 650
 651     if( i_size > 0 )
 652     {
 653         p_buffer->p_allocated_buffer =
 654             malloc( i_size + i_preheader + i_padding );
 655         p_buffer->p_buffer = p_buffer->p_allocated_buffer + i_preheader;
 656
 657         if( p_buffer->p_allocated_buffer && i_padding )
 658             memset( p_buffer->p_allocated_buffer + i_size + i_preheader, 0,
 659                     i_padding );
 660     }
 661     else
 662     {
 663         p_buffer->p_allocated_buffer = NULL;
 664         p_buffer->p_buffer = NULL;
 665     }
 666     p_buffer->i_allocated_size = i_size + i_preheader + i_padding;
 667     p_buffer->i_buffer_size = i_size;
 668
 669     p_buffer->i_size    = i_size;
 670     p_buffer->i_length  = 0;
 671     p_buffer->i_dts     = 0;
 672     p_buffer->i_pts     = 0;
 673     p_buffer->i_bitrate = 0;
 674     p_buffer->i_flags   = 0x0000;
 675     p_buffer->p_next = NULL;
 676
 677     return( p_buffer );
 678 }
 679
 680 int sout_BufferRealloc( sout_instance_t *p_sout, sout_buffer_t *p_buffer,
 681                         size_t i_size )
 682 {
 683     size_t i_preheader, i_padding;
 684
 685     i_preheader = p_buffer->p_buffer - p_buffer->p_allocated_buffer;
 686     i_padding =  p_buffer->i_allocated_size - p_buffer->i_buffer_size
 687                  - i_preheader;
 688
 689 #ifdef DEBUG_BUFFER
 690     msg_Dbg( p_sout, "realloc buffer old size:%d new size:%d, preheader:%d, "
 691              "padding:%d", (uint32_t)p_buffer->i_allocated_size,
 692              (uint32_t)i_size, i_preheader, i_padding );
 693 #endif
 694
 695     if( !( p_buffer->p_allocated_buffer =
 696            realloc( p_buffer->p_allocated_buffer,
 697                     i_size + i_preheader + i_padding ) ) )
 698     {
 699         msg_Err( p_sout, "realloc failed" );
 700         p_buffer->i_allocated_size = 0;
 701         p_buffer->i_buffer_size = 0;
 702         p_buffer->i_size = 0;
 703         p_buffer->p_buffer = NULL;
 704         return( -1 );
 705     }
 706     p_buffer->p_buffer = p_buffer->p_allocated_buffer + i_preheader;
 707
 708     p_buffer->i_allocated_size = i_size + i_preheader + i_padding;
 709     p_buffer->i_buffer_size = i_size;
 710
 711     if( i_padding )
 712         memset( p_buffer->p_allocated_buffer + i_size + i_preheader, 0,
 713                 i_padding );
 714
 715     return( 0 );
 716 }
 717
 718 int sout_BufferReallocFromPreHeader( sout_instance_t *p_sout,
 719                                      sout_buffer_t *p_buffer, size_t i_size )
 720 {
 721     size_t i_preheader;
 722
 723     i_preheader = p_buffer->p_buffer - p_buffer->p_allocated_buffer;
 724
 725     if( i_preheader < i_size )
 726     {
 727         return( -1 );
 728     }
 729
 730     p_buffer->p_buffer -= i_size;
 731     p_buffer->i_size += i_size;
 732     p_buffer->i_buffer_size += i_size;
 733
 734     return( 0 );
 735 }
 736
 737 int sout_BufferDelete( sout_instance_t *p_sout, sout_buffer_t *p_buffer )
 738 {
 739 #ifdef DEBUG_BUFFER
 740     msg_Dbg( p_sout, "freeing buffer, size:%d", p_buffer->i_size );
 741 #endif
 742     if( p_buffer->p_allocated_buffer )
 743     {
 744         free( p_buffer->p_allocated_buffer );
 745     }
 746     free( p_buffer );
 747     return( 0 );
 748 }
 749
 750 sout_buffer_t *sout_BufferDuplicate( sout_instance_t *p_sout,
 751                                      sout_buffer_t *p_buffer )
 752 {
 753     sout_buffer_t *p_dup;
 754
 755     p_dup = sout_BufferNew( p_sout, p_buffer->i_size );
 756
 757     p_dup->i_bitrate= p_buffer->i_bitrate;
 758     p_dup->i_dts    = p_buffer->i_dts;
 759     p_dup->i_pts    = p_buffer->i_pts;
 760     p_dup->i_length = p_buffer->i_length;
 761     p_dup->i_flags  = p_buffer->i_flags;
 762     p_sout->p_vlc->pf_memcpy( p_dup->p_buffer, p_buffer->p_buffer, p_buffer->i_size );
 763
 764     return( p_dup );
 765 }
 766
 767 void sout_BufferChain( sout_buffer_t **pp_chain,
 768                        sout_buffer_t *p_buffer )
 769 {
 770     if( *pp_chain == NULL )
 771     {
 772         *pp_chain = p_buffer;
 773     }
 774     else if( p_buffer != NULL )
 775     {
 776         sout_buffer_t *p = *pp_chain;
 777
 778         while( p->p_next )
 779         {
 780             p = p->p_next;
 781         }
 782
 783         p->p_next = p_buffer;
 784     }
 785 }
 786
 787 static int  mrl_Parse( mrl_t *p_mrl, char *psz_mrl )
 788 {
 789     char * psz_dup = strdup( psz_mrl );
 790     char * psz_parser = psz_dup;
 791     char * psz_access = "";
 792     char * psz_way = "";
 793     char * psz_name = "";
 794
 795     /* *** first parse psz_dest */
 796     while( *psz_parser && *psz_parser != ':' )
 797     {
 798         if( *psz_parser == '{' )
 799         {
 800             while( *psz_parser && *psz_parser != '}' )
 801             {
 802                 psz_parser++;
 803             }
 804             if( *psz_parser )
 805             {
 806                 psz_parser++;
 807             }
 808         }
 809         else
 810         {
 811             psz_parser++;
 812         }
 813     }
 814 #if defined( WIN32 ) || defined( UNDER_CE )
 815     if( psz_parser - psz_dup == 1 )
 816     {
 817         /* msg_Warn( p_sout, "drive letter %c: found in source string",
 818                           *psz_dup ) ; */
 819         psz_parser = "";
 820     }
 821 #endif
 822
 823     if( !*psz_parser )
 824     {
 825         psz_access = psz_way = "";
 826         psz_name = psz_dup;
 827     }
 828     else
 829     {
 830         *psz_parser++ = '\0';
 831
 832         /* let's skip '//' */
 833         if( psz_parser[0] == '/' && psz_parser[1] == '/' )
 834         {
 835             psz_parser += 2 ;
 836         }
 837
 838         psz_name = psz_parser ;
 839
 840         /* Come back to parse the access and mux plug-ins */
 841         psz_parser = psz_dup;
 842
 843         if( !*psz_parser )
 844         {
 845             /* No access */
 846             psz_access = "";
 847         }
 848         else if( *psz_parser == '/' )
 849         {
 850             /* No access */
 851             psz_access = "";
 852             psz_parser++;
 853         }
 854         else
 855         {
 856             psz_access = psz_parser;
 857
 858             while( *psz_parser && *psz_parser != '/' )
 859             {
 860                 if( *psz_parser == '{' )
 861                 {
 862                     while( *psz_parser && *psz_parser != '}' )
 863                     {
 864                         psz_parser++;
 865                     }
 866                     if( *psz_parser )
 867                     {
 868                         psz_parser++;
 869                     }
 870                 }
 871                 else
 872                 {
 873                     psz_parser++;
 874                 }
 875             }
 876
 877             if( *psz_parser == '/' )
 878             {
 879                 *psz_parser++ = '\0';
 880             }
 881         }
 882
 883         if( !*psz_parser )
 884         {
 885             /* No mux */
 886             psz_way = "";
 887         }
 888         else
 889         {
 890             psz_way = psz_parser;
 891         }
 892     }
 893
 894     p_mrl->psz_access = strdup( psz_access );
 895     p_mrl->psz_way    = strdup( psz_way );
 896     p_mrl->psz_name   = strdup( psz_name );
 897
 898     free( psz_dup );
 899     return( VLC_SUCCESS );
 900 }
 901
 902
 903 /* mrl_Clean: clean p_mrl  after a call to mrl_Parse */
 904 static void mrl_Clean( mrl_t *p_mrl )
 905 {
 906     FREE( p_mrl->psz_access );
 907     FREE( p_mrl->psz_way );
 908     FREE( p_mrl->psz_name );
 909 }
 910
 911
 912 /****************************************************************************
 913  ****************************************************************************
 914  **
 915  **
 916  **
 917  ****************************************************************************
 918  ****************************************************************************/
 919
 920 /* create a complete chain */
 921 /* chain format:
 922     module{option=*:option=*}[:module{option=*:...}]
 923  */
 924
 925 static char *_strndup( char *str, int i_len )
 926 {
 927     char *p;
 928
 929     p = malloc( i_len + 1 );
 930     strncpy( p, str, i_len );
 931     p[i_len] = '\0';
 932
 933     return( p );
 934 }
 935
 936 /*
 937  * parse module{options=str, option="str "}:
 938  *  return a pointer on the rest
 939  *  XXX: psz_chain is modified
 940  */
 941 #define SKIPSPACE( p ) { while( *p && ( *p == ' ' || *p == '\t' ) ) p++; }
 942 /* go accross " " and { } */
 943 static char *_get_chain_end( char *str )
 944 {
 945     char *p = str;
 946
 947     SKIPSPACE( p );
 948
 949     for( ;; )
 950     {
 951         if( *p == '{' || *p == '"' || *p == '\'')
 952         {
 953             char c;
 954
 955             if( *p == '{' )
 956             {
 957                 c = '}';
 958             }
 959             else
 960             {
 961                 c = *p;
 962             }
 963             p++;
 964
 965             for( ;; )
 966             {
 967                 if( *p == '\0' )
 968                 {
 969                     return p;
 970                 }
 971
 972                 if( *p == c )
 973                 {
 974                     p++;
 975                     return p;
 976                 }
 977                 else if( *p == '{' && c == '}' )
 978                 {
 979                     p = _get_chain_end( p );
 980                 }
 981                 else
 982                 {
 983                     p++;
 984                 }
 985             }
 986         }
 987         else if( *p == '\0' || *p == ',' || *p == '}' || *p == ' ' || *p == '\t' )
 988         {
 989             return p;
 990         }
 991         else
 992         {
 993             p++;
 994         }
 995     }
 996 }
 997
 998 char * sout_cfg_parser( char **ppsz_name, sout_cfg_t **pp_cfg, char *psz_chain )
 999 {
1000     sout_cfg_t *p_cfg = NULL;
1001     char       *p = psz_chain;
1002
1003     *ppsz_name = NULL;
1004     *pp_cfg    = NULL;
1005
1006     if( p == NULL )
1007     {
1008         return NULL;
1009     }
1010
1011     SKIPSPACE( p );
1012
1013     while( *p && *p != '{' && *p != ':' && *p != ' ' && *p != '\t' )
1014     {
1015         p++;
1016     }
1017
1018     if( p == psz_chain )
1019     {
1020         return NULL;
1021     }
1022
1023     *ppsz_name = _strndup( psz_chain, p - psz_chain );
1024
1025     /* fprintf( stderr, "name=%s - rest=%s\n", *ppsz_name, p ); */
1026
1027     SKIPSPACE( p );
1028
1029     if( *p == '{' )
1030     {
1031         char *psz_name;
1032
1033         p++;
1034
1035         for( ;; )
1036         {
1037             sout_cfg_t cfg;
1038
1039             SKIPSPACE( p );
1040
1041             psz_name = p;
1042
1043             while( *p && *p != '=' && *p != ',' && *p != '}' && *p != ' ' && *p != '\t' )
1044             {
1045                 p++;
1046             }
1047
1048             /* fprintf( stderr, "name=%s - rest=%s\n", psz_name, p ); */
1049             if( p == psz_name )
1050             {
1051                 fprintf( stderr, "invalid options (empty)" );
1052                 break;
1053             }
1054
1055             cfg.psz_name = _strndup( psz_name, p - psz_name );
1056
1057             SKIPSPACE( p );
1058
1059             if( *p == '=' )
1060             {
1061                 char *end;
1062
1063                 p++;
1064 #if 0
1065                 SKIPSPACE( p );
1066
1067                 if( *p == '"' )
1068                 {
1069                     char *end;
1070
1071                     p++;
1072                     end = strchr( p, '"' );
1073
1074                     if( end )
1075                     {
1076 /*                        fprintf( stderr, "##%s -- %s\n", p, end ); */
1077                         cfg.psz_value = _strndup( p, end - p );
1078                         p = end + 1;
1079                     }
1080                     else
1081                     {
1082                         cfg.psz_value = strdup( p );
1083                         p += strlen( p );
1084                     }
1085
1086                 }
1087                 else
1088                 {
1089                     psz_value = p;
1090                     while( *p && *p != ',' && *p != '}' && *p != ' ' && *p != '\t' )
1091                     {
1092                         p++;
1093                     }
1094                     cfg.psz_value = _strndup( psz_value, p - psz_value );
1095                 }
1096 #endif
1097                 end = _get_chain_end( p );
1098                 if( end <= p )
1099                 {
1100                     cfg.psz_value = NULL;
1101                 }
1102                 else
1103                 {
1104                     if( *p == '\'' || *p =='"' || *p == '{' )
1105                     {
1106                         p++;
1107                         end--;
1108                     }
1109                     if( end <= p )
1110                     {
1111                         cfg.psz_value = NULL;
1112                     }
1113                     else
1114                     {
1115                         cfg.psz_value = _strndup( p, end - p );
1116                     }
1117                 }
1118
1119                 p = end;
1120                 SKIPSPACE( p );
1121             }
1122             else
1123             {
1124                 cfg.psz_value = NULL;
1125             }
1126
1127             cfg.p_next = NULL;
1128             if( p_cfg )
1129             {
1130                 p_cfg->p_next = malloc( sizeof( sout_cfg_t ) );
1131                 memcpy( p_cfg->p_next, &cfg, sizeof( sout_cfg_t ) );
1132
1133                 p_cfg = p_cfg->p_next;
1134             }
1135             else
1136             {
1137                 p_cfg = malloc( sizeof( sout_cfg_t ) );
1138                 memcpy( p_cfg, &cfg, sizeof( sout_cfg_t ) );
1139
1140                 *pp_cfg = p_cfg;
1141             }
1142
1143             if( *p == ',' )
1144             {
1145                 p++;
1146             }
1147
1148             if( *p == '}' )
1149             {
1150                 p++;
1151
1152                 break;
1153             }
1154         }
1155     }
1156
1157     if( *p == ':' )
1158     {
1159         return( strdup( p + 1 ) );
1160     }
1161
1162     return( NULL );
1163 }
1164
1165 static void sout_cfg_free( sout_cfg_t *p_cfg )
1166 {
1167     while( p_cfg != NULL )
1168     {
1169         sout_cfg_t *p_next;
1170
1171         p_next = p_cfg->p_next;
1172
1173         FREE( p_cfg->psz_name );
1174         FREE( p_cfg->psz_value );
1175         free( p_cfg );
1176
1177         p_cfg = p_next;
1178     }
1179 }
1180
1181
1182 /*
1183  * XXX name and p_cfg are used (-> do NOT free them)
1184  */
1185 sout_stream_t *sout_stream_new( sout_instance_t *p_sout,
1186                                 char *psz_chain )
1187 {
1188     sout_stream_t *p_stream;
1189
1190     if( !psz_chain )
1191     {
1192         msg_Err( p_sout, "invalid chain" );
1193         return NULL;
1194     }
1195
1196     p_stream = vlc_object_create( p_sout, sizeof( sout_stream_t ) );
1197
1198     if( !p_stream )
1199     {
1200         msg_Err( p_sout, "out of memory" );
1201         return NULL;
1202     }
1203
1204     p_stream->p_sout   = p_sout;
1205     p_stream->p_sys    = NULL;
1206
1207     p_stream->psz_next =
1208         sout_cfg_parser( &p_stream->psz_name, &p_stream->p_cfg, psz_chain);
1209
1210     msg_Dbg( p_sout, "stream=`%s'", p_stream->psz_name );
1211
1212     p_stream->p_module =
1213         module_Need( p_stream, "sout stream", p_stream->psz_name, VLC_TRUE );
1214
1215     if( !p_stream->p_module )
1216     {
1217         sout_stream_delete( p_stream );
1218         return NULL;
1219     }
1220
1221     return p_stream;
1222 }
1223
1224 void sout_stream_delete( sout_stream_t *p_stream )
1225 {
1226     msg_Dbg( p_stream, "destroying chain... (name=%s)", p_stream->psz_name );
1227     if( p_stream->p_module ) module_Unneed( p_stream, p_stream->p_module );
1228
1229     FREE( p_stream->psz_name );
1230     FREE( p_stream->psz_next );
1231
1232     sout_cfg_free( p_stream->p_cfg );
1233
1234     msg_Dbg( p_stream, "destroying chain done" );
1235     vlc_object_destroy( p_stream );
1236 }
1237
1238 static char *_sout_stream_url_to_chain( vlc_object_t *p_this, char *psz_url )
1239 {
1240     mrl_t       mrl;
1241     char        *psz_chain, *p;
1242
1243     mrl_Parse( &mrl, psz_url );
1244     p = psz_chain = malloc( 500 + strlen( mrl.psz_way ) +
1245                                   strlen( mrl.psz_access ) +
1246                                   strlen( mrl.psz_name ) );
1247
1248
1249     if( config_GetInt( p_this, "sout-display" ) )
1250     {
1251         p += sprintf( p, "duplicate{dst=display,dst=std{mux=\"%s\",access=\"%s\",url=\"%s\"}}",
1252                       mrl.psz_way, mrl.psz_access, mrl.psz_name );
1253     }
1254     else
1255     {
1256         p += sprintf( p, "std{mux=\"%s\",access=\"%s\",url=\"%s\"}",
1257                       mrl.psz_way, mrl.psz_access, mrl.psz_name );
1258     }
1259
1260     mrl_Clean( &mrl );
1261     return( psz_chain );
1262 }