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 VideoLAN
   5  * $Id: stream_output.c,v 1.24 2003/04/13 20:00:21 fenrir 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 char *sout_stream_chain_to_str( char * );
  41 /*
  42  * Generic MRL parser
  43  *
  44  */
  45
  46 typedef struct
  47 {
  48     char            *psz_access;
  49
  50     char            *psz_way;
  51
  52     char *psz_name;
  53 } mrl_t;
  54
  55 /* mrl_Parse: parse psz_mrl and fill p_mrl */
  56 static int  mrl_Parse( mrl_t *p_mrl, char *psz_mrl );
  57 /* mrl_Clean: clean p_mrl  after a call to mrl_Parse */
  58 static void mrl_Clean( mrl_t *p_mrl );
  59
  60 #define FREE( p ) if( p ) { free( p ); (p) = NULL; }
  61
  62 /*****************************************************************************
  63  * sout_NewInstance: creates a new stream output instance
  64  *****************************************************************************/
  65 sout_instance_t * __sout_NewInstance ( vlc_object_t *p_parent,
  66                                        char * psz_dest )
  67 {
  68     sout_instance_t *p_sout;
  69
  70     /* *** Allocate descriptor *** */
  71     p_sout = vlc_object_create( p_parent, VLC_OBJECT_SOUT );
  72     if( p_sout == NULL )
  73     {
  74         msg_Err( p_parent, "out of memory" );
  75         return NULL;
  76     }
  77
  78     /* *** init descriptor *** */
  79     p_sout->psz_sout    = strdup( psz_dest );
  80     p_sout->i_preheader = 0;
  81     p_sout->p_sys       = NULL;
  82
  83     vlc_mutex_init( p_sout, &p_sout->lock );
  84     if( psz_dest && psz_dest[0] == '#' )
  85     {
  86         p_sout->psz_chain = strdup( &psz_dest[1] );
  87     }
  88     else
  89     {
  90         p_sout->psz_chain = sout_stream_chain_to_str( psz_dest );
  91     }
  92
  93     p_sout->p_stream = sout_stream_new( p_sout, p_sout->psz_chain );
  94
  95     if( p_sout->p_stream == NULL )
  96     {
  97         msg_Err( p_sout, "stream chained failed for `%s'", p_sout->psz_chain );
  98
  99         FREE( p_sout->psz_sout );
 100         FREE( p_sout->psz_chain );
 101
 102         vlc_object_destroy( p_sout );
 103         return( NULL );
 104     }
 105
 106     vlc_object_attach( p_sout, p_parent );
 107
 108     return p_sout;
 109 }
 110 /*****************************************************************************
 111  * sout_DeleteInstance: delete a previously allocated instance
 112  *****************************************************************************/
 113 void sout_DeleteInstance( sout_instance_t * p_sout )
 114 {
 115     /* Unlink object */
 116     vlc_object_detach( p_sout );
 117
 118     /* *** free all string *** */
 119     FREE( p_sout->psz_sout );
 120     FREE( p_sout->psz_chain );
 121
 122     sout_stream_delete( p_sout->p_stream );
 123     vlc_mutex_destroy( &p_sout->lock );
 124
 125     /* *** free structure *** */
 126     vlc_object_destroy( p_sout );
 127 }
 128
 129 /*****************************************************************************
 130  * Packetizer/Input
 131  *****************************************************************************/
 132 sout_packetizer_input_t *__sout_InputNew( vlc_object_t  *p_this,
 133                                           sout_format_t *p_fmt )
 134 {
 135     sout_instance_t         *p_sout = NULL;
 136     sout_packetizer_input_t *p_input;
 137
 138     int             i_try;
 139
 140     /* search an stream output */
 141     for( i_try = 0; i_try < 12; i_try++ )
 142     {
 143         p_sout = vlc_object_find( p_this, VLC_OBJECT_SOUT, FIND_ANYWHERE );
 144         if( p_sout )
 145         {
 146             break;
 147         }
 148
 149         msleep( 100*1000 );
 150         msg_Dbg( p_this, "waiting for sout" );
 151     }
 152
 153     if( !p_sout )
 154     {
 155         msg_Err( p_this, "cannot find any stream ouput" );
 156         return( NULL );
 157     }
 158
 159     msg_Dbg( p_sout, "adding a new input" );
 160
 161     /* *** create a packetizer input *** */
 162     p_input         = malloc( sizeof( sout_packetizer_input_t ) );
 163     p_input->p_sout = p_sout;
 164     p_input->p_fmt  = p_fmt;
 165
 166     if( p_fmt->i_fourcc == VLC_FOURCC( 'n', 'u', 'l', 'l' ) )
 167     {
 168         vlc_object_release( p_sout );
 169         return p_input;
 170     }
 171
 172     /* *** add it to the stream chain */
 173     vlc_mutex_lock( &p_sout->lock );
 174     p_input->id = p_sout->p_stream->pf_add( p_sout->p_stream,
 175                                             p_fmt );
 176     vlc_mutex_unlock( &p_sout->lock );
 177
 178     vlc_object_release( p_sout );
 179
 180     if( p_input->id == NULL )
 181     {
 182         free( p_input );
 183         return( NULL );
 184     }
 185
 186     return( p_input );
 187 }
 188
 189
 190 int sout_InputDelete( sout_packetizer_input_t *p_input )
 191 {
 192     sout_instance_t     *p_sout = p_input->p_sout;
 193
 194     msg_Dbg( p_sout, "removing an input" );
 195
 196     if( p_input->p_fmt->i_fourcc != VLC_FOURCC( 'n', 'u', 'l', 'l' ) )
 197     {
 198         vlc_mutex_lock( &p_sout->lock );
 199         p_sout->p_stream->pf_del( p_sout->p_stream, p_input->id );
 200         vlc_mutex_unlock( &p_sout->lock );
 201     }
 202
 203     free( p_input );
 204
 205     return( VLC_SUCCESS);
 206 }
 207
 208
 209 int sout_InputSendBuffer( sout_packetizer_input_t *p_input, sout_buffer_t *p_buffer )
 210 {
 211     sout_instance_t     *p_sout = p_input->p_sout;
 212
 213     if( p_input->p_fmt->i_fourcc == VLC_FOURCC( 'n', 'u', 'l', 'l' ) )
 214     {
 215         sout_BufferDelete( p_input->p_sout, p_buffer );
 216         return VLC_SUCCESS;
 217     }
 218
 219
 220     return( p_sout->p_stream->pf_send( p_sout->p_stream, p_input->id, p_buffer ) );
 221 }
 222
 223 /*****************************************************************************
 224  * sout_AccessOutNew: allocate a new access out
 225  *****************************************************************************/
 226 sout_access_out_t *sout_AccessOutNew( sout_instance_t *p_sout,
 227                                       char *psz_access, char *psz_name )
 228 {
 229     sout_access_out_t *p_access;
 230
 231     if( !( p_access = vlc_object_create( p_sout,
 232                                          sizeof( sout_access_out_t ) ) ) )
 233     {
 234         msg_Err( p_sout, "out of memory" );
 235         return NULL;
 236     }
 237     p_access->psz_access = strdup( psz_access ? psz_access : "" );
 238     p_access->psz_name   = strdup( psz_name ? psz_name : "" );
 239     p_access->p_sout     = p_sout;
 240     p_access->p_sys = NULL;
 241     p_access->pf_seek    = NULL;
 242     p_access->pf_write   = NULL;
 243
 244     p_access->p_module   = module_Need( p_access,
 245                                         "sout access",
 246                                         p_access->psz_access );;
 247
 248     if( !p_access->p_module )
 249     {
 250         free( p_access->psz_access );
 251         free( p_access->psz_name );
 252         vlc_object_destroy( p_access );
 253         return( NULL );
 254     }
 255
 256     return p_access;
 257 }
 258 /*****************************************************************************
 259  * sout_AccessDelete: delete an access out
 260  *****************************************************************************/
 261 void sout_AccessOutDelete( sout_access_out_t *p_access )
 262 {
 263     if( p_access->p_module )
 264     {
 265         module_Unneed( p_access, p_access->p_module );
 266     }
 267     free( p_access->psz_access );
 268     free( p_access->psz_name );
 269
 270     vlc_object_destroy( p_access );
 271 }
 272
 273 /*****************************************************************************
 274  * sout_AccessSeek:
 275  *****************************************************************************/
 276 int  sout_AccessOutSeek( sout_access_out_t *p_access, off_t i_pos )
 277 {
 278     return( p_access->pf_seek( p_access, i_pos ) );
 279 }
 280
 281 /*****************************************************************************
 282  * sout_AccessWrite:
 283  *****************************************************************************/
 284 int  sout_AccessOutWrite( sout_access_out_t *p_access, sout_buffer_t *p_buffer )
 285 {
 286     return( p_access->pf_write( p_access, p_buffer ) );
 287 }
 288
 289
 290 /*****************************************************************************
 291  * MuxNew: allocate a new mux
 292  *****************************************************************************/
 293 sout_mux_t * sout_MuxNew         ( sout_instance_t *p_sout,
 294                                    char *psz_mux,
 295                                    sout_access_out_t *p_access )
 296 {
 297     sout_mux_t *p_mux;
 298
 299     p_mux = vlc_object_create( p_sout,
 300                                sizeof( sout_mux_t ) );
 301     if( p_mux == NULL )
 302     {
 303         msg_Err( p_sout, "out of memory" );
 304         return NULL;
 305     }
 306
 307     p_mux->p_sout       = p_sout;
 308     p_mux->psz_mux      = strdup( psz_mux);
 309     p_mux->p_access     = p_access;
 310     p_mux->i_preheader  = 0;
 311     p_mux->pf_capacity  = NULL;
 312     p_mux->pf_addstream = NULL;
 313     p_mux->pf_delstream = NULL;
 314     p_mux->pf_mux       = NULL;
 315     p_mux->i_nb_inputs  = 0;
 316     p_mux->pp_inputs    = NULL;
 317
 318     p_mux->p_sys        = NULL;
 319
 320     p_mux->p_module     = module_Need( p_mux,
 321                                        "sout mux",
 322                                        p_mux->psz_mux );
 323     if( p_mux->p_module == NULL )
 324     {
 325         FREE( p_mux->psz_mux );
 326
 327         vlc_object_destroy( p_mux );
 328         return NULL;
 329     }
 330
 331     /* *** probe mux capacity *** */
 332     if( p_mux->pf_capacity )
 333     {
 334         int b_answer;
 335         if( p_mux->pf_capacity( p_mux,
 336                                 SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME,
 337                                 NULL, (void*)&b_answer ) != SOUT_MUX_CAP_ERR_OK )
 338         {
 339             b_answer = VLC_FALSE;
 340         }
 341         if( b_answer )
 342         {
 343             msg_Dbg( p_sout, "muxer support adding stream at any time" );
 344             p_mux->b_add_stream_any_time = VLC_TRUE;
 345             p_mux->b_waiting_stream = VLC_FALSE;
 346         }
 347         else
 348         {
 349             p_mux->b_add_stream_any_time = VLC_FALSE;
 350             p_mux->b_waiting_stream = VLC_TRUE;
 351         }
 352     }
 353     else
 354     {
 355         p_mux->b_add_stream_any_time = VLC_FALSE;
 356         p_mux->b_waiting_stream = VLC_TRUE;
 357     }
 358     p_mux->i_add_stream_start = -1;
 359
 360     return p_mux;
 361 }
 362
 363 void sout_MuxDelete              ( sout_mux_t *p_mux )
 364 {
 365     if( p_mux->p_module )
 366     {
 367         module_Unneed( p_mux, p_mux->p_module );
 368     }
 369     free( p_mux->psz_mux );
 370
 371     vlc_object_destroy( p_mux );
 372 }
 373
 374 sout_input_t *sout_MuxAddStream( sout_mux_t *p_mux,
 375                                  sout_format_t *p_fmt )
 376 {
 377     sout_input_t *p_input;
 378
 379     if( !p_mux->b_add_stream_any_time && !p_mux->b_waiting_stream)
 380     {
 381         msg_Err( p_mux, "cannot add a new stream (unsuported while muxing for this format)" );
 382         return NULL;
 383     }
 384     if( p_mux->i_add_stream_start < 0 )
 385     {
 386         /* we wait for one second */
 387         p_mux->i_add_stream_start = mdate();
 388     }
 389
 390     msg_Dbg( p_mux, "adding a new input" );
 391
 392     /* create a new sout input */
 393     p_input = malloc( sizeof( sout_input_t ) );
 394     p_input->p_sout = p_mux->p_sout;
 395     p_input->p_fmt  = p_fmt;
 396     p_input->p_fifo = sout_FifoCreate( p_mux->p_sout );
 397     p_input->p_sys  = NULL;
 398
 399     TAB_APPEND( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input );
 400     if( p_mux->pf_addstream( p_mux, p_input ) < 0 )
 401     {
 402             msg_Err( p_mux, "cannot add this stream" );
 403             sout_MuxDeleteStream( p_mux, p_input );
 404             return( NULL );
 405     }
 406
 407     return( p_input );
 408 }
 409
 410 void sout_MuxDeleteStream     ( sout_mux_t *p_mux,
 411                                 sout_input_t *p_input )
 412 {
 413     int i_index;
 414
 415     TAB_FIND( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input, i_index );
 416     if( i_index >= 0 )
 417     {
 418         if( p_mux->pf_delstream( p_mux, p_input ) < 0 )
 419         {
 420             msg_Err( p_mux, "cannot del this stream from mux" );
 421         }
 422
 423         /* remove the entry */
 424         TAB_REMOVE( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input );
 425
 426         if( p_mux->i_nb_inputs == 0 )
 427         {
 428             msg_Warn( p_mux, "no more input stream for this mux" );
 429         }
 430
 431         sout_FifoDestroy( p_mux->p_sout, p_input->p_fifo );
 432         free( p_input );
 433     }
 434 }
 435
 436 void sout_MuxSendBuffer       ( sout_mux_t    *p_mux,
 437                                 sout_input_t  *p_input,
 438                                 sout_buffer_t *p_buffer )
 439 {
 440     sout_FifoPut( p_input->p_fifo, p_buffer );
 441
 442     if( p_mux->b_waiting_stream )
 443     {
 444         if( p_mux->i_add_stream_start > 0 &&
 445             p_mux->i_add_stream_start + (mtime_t)1500000 < mdate() )
 446         {
 447             /* more than 1.5 second, start muxing */
 448             p_mux->b_waiting_stream = VLC_FALSE;
 449         }
 450         else
 451         {
 452             return;
 453         }
 454     }
 455     p_mux->pf_mux( p_mux );
 456 }
 457
 458
 459
 460 sout_fifo_t *sout_FifoCreate( sout_instance_t *p_sout )
 461 {
 462     sout_fifo_t *p_fifo;
 463
 464     if( !( p_fifo = malloc( sizeof( sout_fifo_t ) ) ) )
 465     {
 466         return( NULL );
 467     }
 468
 469     vlc_mutex_init( p_sout, &p_fifo->lock );
 470     vlc_cond_init ( p_sout, &p_fifo->wait );
 471     p_fifo->i_depth = 0;
 472     p_fifo->p_first = NULL;
 473     p_fifo->pp_last = &p_fifo->p_first;
 474
 475     return( p_fifo );
 476 }
 477
 478 void       sout_FifoFree( sout_instance_t *p_sout, sout_fifo_t *p_fifo )
 479 {
 480     sout_buffer_t *p_buffer;
 481
 482     vlc_mutex_lock( &p_fifo->lock );
 483     p_buffer = p_fifo->p_first;
 484     while( p_buffer )
 485     {
 486         sout_buffer_t *p_next;
 487         p_next = p_buffer->p_next;
 488         sout_BufferDelete( p_sout, p_buffer );
 489         p_buffer = p_next;
 490     }
 491     vlc_mutex_unlock( &p_fifo->lock );
 492
 493     return;
 494 }
 495 void       sout_FifoDestroy( sout_instance_t *p_sout, sout_fifo_t *p_fifo )
 496 {
 497     sout_FifoFree( p_sout, p_fifo );
 498     vlc_mutex_destroy( &p_fifo->lock );
 499     vlc_cond_destroy ( &p_fifo->wait );
 500
 501     free( p_fifo );
 502 }
 503
 504 void        sout_FifoPut( sout_fifo_t *p_fifo, sout_buffer_t *p_buffer )
 505 {
 506     vlc_mutex_lock( &p_fifo->lock );
 507
 508     do
 509     {
 510         *p_fifo->pp_last = p_buffer;
 511         p_fifo->pp_last = &p_buffer->p_next;
 512         p_fifo->i_depth++;
 513
 514         p_buffer = p_buffer->p_next;
 515
 516     } while( p_buffer );
 517
 518     /* warm there is data in this fifo */
 519     vlc_cond_signal( &p_fifo->wait );
 520     vlc_mutex_unlock( &p_fifo->lock );
 521 }
 522
 523 sout_buffer_t *sout_FifoGet( sout_fifo_t *p_fifo )
 524 {
 525     sout_buffer_t *p_buffer;
 526
 527     vlc_mutex_lock( &p_fifo->lock );
 528
 529     if( p_fifo->p_first == NULL )
 530     {
 531         vlc_cond_wait( &p_fifo->wait, &p_fifo->lock );
 532     }
 533
 534     p_buffer = p_fifo->p_first;
 535
 536     p_fifo->p_first = p_buffer->p_next;
 537     p_fifo->i_depth--;
 538
 539     if( p_fifo->p_first == NULL )
 540     {
 541         p_fifo->pp_last = &p_fifo->p_first;
 542     }
 543
 544     vlc_mutex_unlock( &p_fifo->lock );
 545
 546     p_buffer->p_next = NULL;
 547     return( p_buffer );
 548 }
 549
 550 sout_buffer_t *sout_FifoShow( sout_fifo_t *p_fifo )
 551 {
 552     sout_buffer_t *p_buffer;
 553
 554     vlc_mutex_lock( &p_fifo->lock );
 555
 556     if( p_fifo->p_first == NULL )
 557     {
 558         vlc_cond_wait( &p_fifo->wait, &p_fifo->lock );
 559     }
 560
 561     p_buffer = p_fifo->p_first;
 562
 563     vlc_mutex_unlock( &p_fifo->lock );
 564
 565     return( p_buffer );
 566 }
 567
 568 sout_buffer_t *sout_BufferNew( sout_instance_t *p_sout, size_t i_size )
 569 {
 570     sout_buffer_t *p_buffer;
 571     size_t        i_preheader;
 572
 573 #ifdef DEBUG_BUFFER
 574     msg_Dbg( p_sout, "allocating an new buffer, size:%d", (uint32_t)i_size );
 575 #endif
 576
 577     p_buffer = malloc( sizeof( sout_buffer_t ) );
 578     i_preheader = p_sout->i_preheader;
 579
 580     if( i_size > 0 )
 581     {
 582         p_buffer->p_allocated_buffer = malloc( i_size + i_preheader );
 583         p_buffer->p_buffer = p_buffer->p_allocated_buffer + i_preheader;
 584     }
 585     else
 586     {
 587         p_buffer->p_allocated_buffer = NULL;
 588         p_buffer->p_buffer = NULL;
 589     }
 590     p_buffer->i_allocated_size = i_size + i_preheader;
 591     p_buffer->i_buffer_size = i_size;
 592
 593     p_buffer->i_size    = i_size;
 594     p_buffer->i_length  = 0;
 595     p_buffer->i_dts     = 0;
 596     p_buffer->i_pts     = 0;
 597     p_buffer->i_bitrate = 0;
 598     p_buffer->i_flags   = 0x0000;
 599     p_buffer->p_next = NULL;
 600
 601     return( p_buffer );
 602 }
 603 int sout_BufferRealloc( sout_instance_t *p_sout, sout_buffer_t *p_buffer, size_t i_size )
 604 {
 605     size_t          i_preheader;
 606
 607 #ifdef DEBUG_BUFFER
 608     msg_Dbg( p_sout,
 609              "realloc buffer old size:%d new size:%d",
 610              (uint32_t)p_buffer->i_allocated_size,
 611              (uint32_t)i_size );
 612 #endif
 613
 614     i_preheader = p_buffer->p_buffer - p_buffer->p_allocated_buffer;
 615
 616     if( !( p_buffer->p_allocated_buffer = realloc( p_buffer->p_allocated_buffer, i_size + i_preheader ) ) )
 617     {
 618         msg_Err( p_sout, "realloc failed" );
 619         p_buffer->i_allocated_size = 0;
 620         p_buffer->i_buffer_size = 0;
 621         p_buffer->i_size = 0;
 622         p_buffer->p_buffer = NULL;
 623         return( -1 );
 624     }
 625     p_buffer->p_buffer = p_buffer->p_allocated_buffer + i_preheader;
 626
 627     p_buffer->i_allocated_size = i_size + i_preheader;
 628     p_buffer->i_buffer_size = i_size;
 629
 630     return( 0 );
 631 }
 632
 633 int sout_BufferReallocFromPreHeader( sout_instance_t *p_sout, sout_buffer_t *p_buffer, size_t i_size )
 634 {
 635     size_t  i_preheader;
 636
 637     i_preheader = p_buffer->p_buffer - p_buffer->p_allocated_buffer;
 638
 639     if( i_preheader < i_size )
 640     {
 641         return( -1 );
 642     }
 643
 644     p_buffer->p_buffer -= i_size;
 645     p_buffer->i_size += i_size;
 646     p_buffer->i_buffer_size += i_size;
 647
 648     return( 0 );
 649 }
 650
 651 int sout_BufferDelete( sout_instance_t *p_sout, sout_buffer_t *p_buffer )
 652 {
 653 #ifdef DEBUG_BUFFER
 654     msg_Dbg( p_sout, "freeing buffer, size:%d", p_buffer->i_size );
 655 #endif
 656     if( p_buffer->p_allocated_buffer )
 657     {
 658         free( p_buffer->p_allocated_buffer );
 659     }
 660     free( p_buffer );
 661     return( 0 );
 662 }
 663
 664 sout_buffer_t *sout_BufferDuplicate( sout_instance_t *p_sout,
 665                                      sout_buffer_t *p_buffer )
 666 {
 667     sout_buffer_t *p_dup;
 668
 669     p_dup = sout_BufferNew( p_sout, p_buffer->i_size );
 670
 671     p_dup->i_bitrate= p_buffer->i_bitrate;
 672     p_dup->i_dts    = p_buffer->i_dts;
 673     p_dup->i_pts    = p_buffer->i_pts;
 674     p_dup->i_length = p_buffer->i_length;
 675     p_dup->i_flags  = p_buffer->i_flags;
 676     p_sout->p_vlc->pf_memcpy( p_dup->p_buffer, p_buffer->p_buffer, p_buffer->i_size );
 677
 678     return( p_dup );
 679 }
 680
 681 void sout_BufferChain( sout_buffer_t **pp_chain,
 682                        sout_buffer_t *p_buffer )
 683 {
 684     if( *pp_chain == NULL )
 685     {
 686         *pp_chain = p_buffer;
 687     }
 688     else if( p_buffer != NULL )
 689     {
 690         sout_buffer_t *p = *pp_chain;
 691
 692         while( p->p_next )
 693         {
 694             p = p->p_next;
 695         }
 696
 697         p->p_next = p_buffer;
 698     }
 699 }
 700
 701 static int  mrl_Parse( mrl_t *p_mrl, char *psz_mrl )
 702 {
 703     char * psz_dup = strdup( psz_mrl );
 704     char * psz_parser = psz_dup;
 705     char * psz_access = "";
 706     char * psz_way = "";
 707     char * psz_name = "";
 708
 709     /* *** first parse psz_dest */
 710     while( *psz_parser && *psz_parser != ':' )
 711     {
 712         if( *psz_parser == '{' )
 713         {
 714             while( *psz_parser && *psz_parser != '}' )
 715             {
 716                 psz_parser++;
 717             }
 718             if( *psz_parser )
 719             {
 720                 psz_parser++;
 721             }
 722         }
 723         else
 724         {
 725             psz_parser++;
 726         }
 727     }
 728 #if defined( WIN32 ) || defined( UNDER_CE )
 729     if( psz_parser - psz_dup == 1 )
 730     {
 731         /* msg_Warn( p_sout, "drive letter %c: found in source string",
 732                           *psz_dup ) ; */
 733         psz_parser = "";
 734     }
 735 #endif
 736
 737     if( !*psz_parser )
 738     {
 739         psz_access = psz_way = "";
 740         psz_name = psz_dup;
 741     }
 742     else
 743     {
 744         *psz_parser++ = '\0';
 745
 746         /* let's skip '//' */
 747         if( psz_parser[0] == '/' && psz_parser[1] == '/' )
 748         {
 749             psz_parser += 2 ;
 750         }
 751
 752         psz_name = psz_parser ;
 753
 754         /* Come back to parse the access and mux plug-ins */
 755         psz_parser = psz_dup;
 756
 757         if( !*psz_parser )
 758         {
 759             /* No access */
 760             psz_access = "";
 761         }
 762         else if( *psz_parser == '/' )
 763         {
 764             /* No access */
 765             psz_access = "";
 766             psz_parser++;
 767         }
 768         else
 769         {
 770             psz_access = psz_parser;
 771
 772             while( *psz_parser && *psz_parser != '/' )
 773             {
 774                 if( *psz_parser == '{' )
 775                 {
 776                     while( *psz_parser && *psz_parser != '}' )
 777                     {
 778                         psz_parser++;
 779                     }
 780                     if( *psz_parser )
 781                     {
 782                         psz_parser++;
 783                     }
 784                 }
 785                 else
 786                 {
 787                     psz_parser++;
 788                 }
 789             }
 790
 791             if( *psz_parser == '/' )
 792             {
 793                 *psz_parser++ = '\0';
 794             }
 795         }
 796
 797         if( !*psz_parser )
 798         {
 799             /* No mux */
 800             psz_way = "";
 801         }
 802         else
 803         {
 804             psz_way = psz_parser;
 805         }
 806     }
 807
 808     p_mrl->psz_access = strdup( psz_access );
 809     p_mrl->psz_way    = strdup( psz_way );
 810     p_mrl->psz_name   = strdup( psz_name );
 811
 812     free( psz_dup );
 813     return( VLC_SUCCESS );
 814 }
 815
 816
 817 /* mrl_Clean: clean p_mrl  after a call to mrl_Parse */
 818 static void mrl_Clean( mrl_t *p_mrl )
 819 {
 820     FREE( p_mrl->psz_access );
 821     FREE( p_mrl->psz_way );
 822     FREE( p_mrl->psz_name );
 823 }
 824
 825
 826 /****************************************************************************
 827  ****************************************************************************
 828  **
 829  **
 830  **
 831  ****************************************************************************
 832  ****************************************************************************/
 833
 834 /* create a complete chain */
 835 /* chain format:
 836     module{option=*:option=*}[:module{option=*:...}]
 837  */
 838
 839 static char *_strndup( char *str, int i_len )
 840 {
 841     char *p;
 842
 843     p = malloc( i_len + 1 );
 844     strncpy( p, str, i_len );
 845     p[i_len] = '\0';
 846
 847     return( p );
 848 }
 849
 850 /*
 851  * parse module{options=str, option="str "}:
 852  *  return a pointer on the rest
 853  *  XXX: psz_chain is modified
 854  */
 855 #define SKIPSPACE( p ) { while( *p && ( *p == ' ' || *p == '\t' ) ) p++; }
 856 /* go accross " " and { } */
 857 static char *_get_chain_end( char *str )
 858 {
 859     char *p = str;
 860
 861     SKIPSPACE( p );
 862
 863     for( ;; )
 864     {
 865         if( *p == '{' || *p == '"' || *p == '\'')
 866         {
 867             char c;
 868
 869             if( *p == '{' )
 870             {
 871                 c = '}';
 872             }
 873             else
 874             {
 875                 c = *p;
 876             }
 877             p++;
 878
 879             for( ;; )
 880             {
 881                 if( *p == '\0' )
 882                 {
 883                     return p;
 884                 }
 885
 886                 if( *p == c )
 887                 {
 888                     p++;
 889                     return p;
 890                 }
 891                 else if( *p == '{' && c == '}' )
 892                 {
 893                     p = _get_chain_end( p );
 894                 }
 895                 else
 896                 {
 897                     p++;
 898                 }
 899             }
 900         }
 901         else if( *p == '\0' || *p == ',' || *p == '}' || *p == ' ' || *p == '\t' )
 902         {
 903             return p;
 904         }
 905         else
 906         {
 907             p++;
 908         }
 909     }
 910 }
 911
 912 char * sout_cfg_parser( char **ppsz_name, sout_cfg_t **pp_cfg, char *psz_chain )
 913 {
 914     sout_cfg_t *p_cfg = NULL;
 915     char       *p = psz_chain;
 916
 917     *ppsz_name = NULL;
 918     *pp_cfg    = NULL;
 919
 920     SKIPSPACE( p );
 921
 922     while( *p && *p != '{' && *p != ':' && *p != ' ' && *p != '\t' )
 923     {
 924         p++;
 925     }
 926
 927     if( p == psz_chain )
 928     {
 929         return NULL;
 930     }
 931
 932     *ppsz_name = _strndup( psz_chain, p - psz_chain );
 933
 934     //fprintf( stderr, "name=%s - rest=%s\n", *ppsz_name, p );
 935
 936     SKIPSPACE( p );
 937
 938     if( *p == '{' )
 939     {
 940         char *psz_name;
 941
 942         p++;
 943
 944         for( ;; )
 945         {
 946             sout_cfg_t cfg;
 947
 948             SKIPSPACE( p );
 949
 950             psz_name = p;
 951
 952             while( *p && *p != '=' && *p != ',' && *p != '}' && *p != ' ' && *p != '\t' )
 953             {
 954                 p++;
 955             }
 956
 957             //fprintf( stderr, "name=%s - rest=%s\n", psz_name, p );
 958             if( p == psz_name )
 959             {
 960                 fprintf( stderr, "invalid options (empty)" );
 961                 break;
 962             }
 963
 964             cfg.psz_name = _strndup( psz_name, p - psz_name );
 965
 966             SKIPSPACE( p );
 967
 968             if( *p == '=' )
 969             {
 970                 char *end;
 971
 972                 p++;
 973 #if 0
 974                 SKIPSPACE( p );
 975
 976                 if( *p == '"' )
 977                 {
 978                     char *end;
 979
 980                     p++;
 981                     end = strchr( p, '"' );
 982
 983                     if( end )
 984                     {
 985 //                        fprintf( stderr, "##%s -- %s\n", p, end );
 986                         cfg.psz_value = _strndup( p, end - p );
 987                         p = end + 1;
 988                     }
 989                     else
 990                     {
 991                         cfg.psz_value = strdup( p );
 992                         p += strlen( p );
 993                     }
 994
 995                 }
 996                 else
 997                 {
 998                     psz_value = p;
 999                     while( *p && *p != ',' && *p != '}' && *p != ' ' && *p != '\t' )
1000                     {
1001                         p++;
1002                     }
1003                     cfg.psz_value = _strndup( psz_value, p - psz_value );
1004                 }
1005 #endif
1006                 end = _get_chain_end( p );
1007                 if( end <= p )
1008                 {
1009                     cfg.psz_value = NULL;
1010                 }
1011                 else
1012                 {
1013                     if( *p == '\'' || *p =='"' || *p == '{' )
1014                     {
1015                         p++;
1016                         end--;
1017                     }
1018                     if( end <= p )
1019                     {
1020                         cfg.psz_value = NULL;
1021                     }
1022                     else
1023                     {
1024                         cfg.psz_value = _strndup( p, end - p );
1025                     }
1026                 }
1027
1028                 p = end;
1029                 SKIPSPACE( p );
1030             }
1031             else
1032             {
1033                 cfg.psz_value = NULL;
1034             }
1035
1036             cfg.p_next = NULL;
1037             if( p_cfg )
1038             {
1039                 p_cfg->p_next = malloc( sizeof( sout_cfg_t ) );
1040                 memcpy( p_cfg->p_next, &cfg, sizeof( sout_cfg_t ) );
1041
1042                 p_cfg = p_cfg->p_next;
1043             }
1044             else
1045             {
1046                 p_cfg = malloc( sizeof( sout_cfg_t ) );
1047                 memcpy( p_cfg, &cfg, sizeof( sout_cfg_t ) );
1048
1049                 *pp_cfg = p_cfg;
1050             }
1051
1052             if( *p == ',' )
1053             {
1054                 p++;
1055             }
1056
1057             if( *p == '}' )
1058             {
1059                 p++;
1060
1061                 break;
1062             }
1063         }
1064     }
1065
1066     if( *p == ':' )
1067     {
1068         return( strdup( p + 1 ) );
1069     }
1070
1071     return( NULL );
1072 }
1073
1074
1075
1076
1077
1078 /*
1079  * XXX name and p_cfg are used (-> do NOT free them)
1080  */
1081 sout_stream_t *sout_stream_new( sout_instance_t *p_sout,
1082                                 char *psz_chain )
1083 {
1084     sout_stream_t *p_stream;
1085
1086     p_stream = vlc_object_create( p_sout, sizeof( sout_stream_t ) );
1087
1088     if( !p_stream )
1089     {
1090         msg_Err( p_sout, "out of memory" );
1091         return NULL;
1092     }
1093
1094     p_stream->p_sout   = p_sout;
1095     p_stream->p_sys    = NULL;
1096
1097     p_stream->psz_next = sout_cfg_parser( &p_stream->psz_name, &p_stream->p_cfg, psz_chain);
1098     msg_Dbg( p_sout, "stream=`%s'", p_stream->psz_name );
1099
1100     p_stream->p_module =
1101         module_Need( p_stream, "sout stream", p_stream->psz_name );
1102
1103     if( !p_stream->p_module )
1104     {
1105         /* FIXME */
1106         vlc_object_destroy( p_stream );
1107         return NULL;
1108     }
1109
1110     return p_stream;
1111 }
1112
1113 void sout_stream_delete( sout_stream_t *p_stream )
1114 {
1115     sout_cfg_t *p_cfg;
1116
1117     msg_Dbg( p_stream, "destroying chain... (name=%s)", p_stream->psz_name );
1118     module_Unneed( p_stream, p_stream->p_module );
1119
1120     FREE( p_stream->psz_name );
1121     FREE( p_stream->psz_next );
1122
1123     p_cfg = p_stream->p_cfg;
1124     while( p_cfg != NULL )
1125     {
1126         sout_cfg_t *p_next;
1127
1128         p_next = p_cfg->p_next;
1129
1130         FREE( p_cfg->psz_name );
1131         FREE( p_cfg->psz_value );
1132         free( p_cfg );
1133
1134         p_cfg = p_next;
1135     }
1136
1137     msg_Dbg( p_stream, "destroying chain done" );
1138     vlc_object_destroy( p_stream );
1139 }
1140
1141 static char *sout_stream_chain_to_str( char *psz_url )
1142 {
1143     mrl_t mrl;
1144     char *psz_chain;
1145
1146     mrl_Parse( &mrl, psz_url );
1147
1148     psz_chain = malloc( 100 + strlen( mrl.psz_way ) + strlen( mrl.psz_access ) + strlen( mrl.psz_name ) );
1149
1150     sprintf( psz_chain, "std{mux=%s,access=%s,url=\"%s\"", mrl.psz_way, mrl.psz_access, mrl.psz_name );
1151
1152     return( psz_chain );
1153 }
1154