git.sesse.net Git - vlc/blob - modules/stream_out/bridge.c

   1 /*****************************************************************************
   2  * bridge.c: bridge stream output module
   3  *****************************************************************************
   4  * Copyright (C) 2005-2008 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Antoine Cellerier <dionoea at videolan dot org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_sout.h>
  36 #include <vlc_block.h>
  37
  38 /*****************************************************************************
  39  * Module descriptor
  40  *****************************************************************************/
  41 #define ID_TEXT N_("ID")
  42 #define ID_LONGTEXT N_( \
  43     "Integer identifier for this elementary stream. This will be used to " \
  44     "\"find\" this stream later." )
  45
  46 #define DEST_TEXT N_( "Destination bridge-in name" )
  47 #define DEST_LONGTEXT N_( \
  48     "Name of the destination bridge-in. If you do not need more " \
  49     "than one bridge-in at a time, you can discard this option." )
  50
  51 #define DELAY_TEXT N_("Delay")
  52 #define DELAY_LONGTEXT N_("Pictures coming from the picture video outputs " \
  53         "will be delayed according to this value (in milliseconds, should be "\
  54         ">= 100 ms). For high values, you will need to raise caching values." )
  55
  56 #define ID_OFFSET_TEXT N_("ID Offset")
  57 #define ID_OFFSET_LONGTEXT N_("Offset to add to the stream IDs specified in " \
  58         "bridge_out to obtain the stream IDs bridge_in will register.")
  59
  60 #define NAME_TEXT N_( "Name of current instance" )
  61 #define NAME_LONGTEXT N_( \
  62     "Name of this bridge-in instance. If you do not need more " \
  63     "than one bridge-in at a time, you can discard this option." )
  64
  65 #define PLACEHOLDER_TEXT N_( "Fallback to placeholder stream when out of data" )
  66 #define PLACEHOLDER_LONGTEXT N_( \
  67     "If set to true, the bridge will discard all input elementary streams " \
  68     "except if it doesn't receive data from another bridge-in. This can " \
  69     "be used to configure a place holder stream when the real source " \
  70     "breaks. Source and placeholder streams should have the same format. " )
  71
  72 #define PLACEHOLDER_DELAY_TEXT N_( "Placeholder delay" )
  73 #define PLACEHOLDER_DELAY_LONGTEXT N_( \
  74     "Delay (in ms) before the placeholder kicks in." )
  75
  76 #define PLACEHOLDER_IFRAME_TEXT N_( "Wait for I frame before toggling placholder" )
  77 #define PLACEHOLDER_IFRAME_LONGTEXT N_( \
  78     "If enabled, switching between the placeholder and the normal stream " \
  79     "will only occur on I frames. This will remove artifacts on stream " \
  80     "switching at the expense of a slightly longer delay, depending on " \
  81     "the frequence of I frames in the streams." )
  82
  83 static int  OpenOut ( vlc_object_t * );
  84 static void CloseOut( vlc_object_t * );
  85 static int  OpenIn  ( vlc_object_t * );
  86 static void CloseIn ( vlc_object_t * );
  87
  88 #define SOUT_CFG_PREFIX_OUT "sout-bridge-out-"
  89 #define SOUT_CFG_PREFIX_IN "sout-bridge-in-"
  90
  91 vlc_module_begin ()
  92     set_shortname( N_("Bridge"))
  93     set_description( N_("Bridge stream output"))
  94     add_submodule ()
  95     set_section( N_("Bridge out"), NULL )
  96     set_capability( "sout stream", 50 )
  97     add_shortcut( "bridge-out" )
  98     /* Only usable with VLM. No category so not in gui preferences
  99     set_category( CAT_SOUT )
 100     set_subcategory( SUBCAT_SOUT_STREAM )*/
 101     add_integer( SOUT_CFG_PREFIX_OUT "id", 0, NULL, ID_TEXT, ID_LONGTEXT,
 102                  false )
 103     add_string( SOUT_CFG_PREFIX_OUT "in-name", "default", NULL,
 104                 DEST_TEXT, DEST_LONGTEXT, false )
 105     set_callbacks( OpenOut, CloseOut )
 106
 107     add_submodule ()
 108     set_section( N_("Bridge in"), NULL )
 109     set_capability( "sout stream", 50 )
 110     add_shortcut( "bridge-in" )
 111     /*set_category( CAT_SOUT )
 112     set_subcategory( SUBCAT_SOUT_STREAM )*/
 113     add_integer( SOUT_CFG_PREFIX_IN "delay", 0, NULL, DELAY_TEXT,
 114                  DELAY_LONGTEXT, false )
 115     add_integer( SOUT_CFG_PREFIX_IN "id-offset", 8192, NULL, ID_OFFSET_TEXT,
 116                  ID_OFFSET_LONGTEXT, false )
 117     add_string( SOUT_CFG_PREFIX_IN "name", "default", NULL,
 118                 NAME_TEXT, NAME_LONGTEXT, false )
 119     add_bool( SOUT_CFG_PREFIX_IN "placeholder", false, NULL,
 120               PLACEHOLDER_TEXT, PLACEHOLDER_LONGTEXT, false )
 121     add_integer( SOUT_CFG_PREFIX_IN "placeholder-delay", 200, NULL,
 122                  PLACEHOLDER_DELAY_TEXT, PLACEHOLDER_DELAY_LONGTEXT, false )
 123     add_bool( SOUT_CFG_PREFIX_IN "placeholder-switch-on-iframe", true, NULL,
 124               PLACEHOLDER_IFRAME_TEXT, PLACEHOLDER_IFRAME_LONGTEXT, false )
 125     set_callbacks( OpenIn, CloseIn )
 126
 127 vlc_module_end ()
 128
 129
 130 /*****************************************************************************
 131  * Local prototypes
 132  *****************************************************************************/
 133 static const char *const ppsz_sout_options_out[] = {
 134     "id", "in-name", NULL
 135 };
 136
 137 static const char *const ppsz_sout_options_in[] = {
 138     "delay", "id-offset", "name",
 139     "placeholder", "placeholder-delay", "placeholder-switch-on-iframe",
 140     NULL
 141 };
 142
 143 static sout_stream_id_t *AddOut ( sout_stream_t *, es_format_t * );
 144 static int               DelOut ( sout_stream_t *, sout_stream_id_t * );
 145 static int               SendOut( sout_stream_t *, sout_stream_id_t *, block_t * );
 146
 147 static sout_stream_id_t *AddIn ( sout_stream_t *, es_format_t * );
 148 static int               DelIn ( sout_stream_t *, sout_stream_id_t * );
 149 static int               SendIn( sout_stream_t *, sout_stream_id_t *, block_t * );
 150
 151 typedef struct bridged_es_t
 152 {
 153     es_format_t fmt;
 154     block_t *p_block;
 155     block_t **pp_last;
 156     bool b_empty;
 157
 158     /* bridge in part */
 159     sout_stream_id_t *id;
 160     mtime_t i_last;
 161     bool b_changed;
 162 } bridged_es_t;
 163
 164 typedef struct bridge_t
 165 {
 166     bridged_es_t **pp_es;
 167     int i_es_num;
 168 } bridge_t;
 169
 170
 171 /*
 172  * Bridge out
 173  */
 174
 175 typedef struct out_sout_stream_sys_t
 176 {
 177     vlc_mutex_t *p_lock;
 178     bridged_es_t *p_es;
 179     int i_id;
 180     bool b_inited;
 181
 182     char *psz_name;
 183 } out_sout_stream_sys_t;
 184
 185 /*****************************************************************************
 186  * OpenOut:
 187  *****************************************************************************/
 188 static int OpenOut( vlc_object_t *p_this )
 189 {
 190     sout_stream_t     *p_stream = (sout_stream_t *)p_this;
 191     out_sout_stream_sys_t *p_sys;
 192     vlc_value_t val;
 193
 194     config_ChainParse( p_stream, SOUT_CFG_PREFIX_OUT, ppsz_sout_options_out,
 195                    p_stream->p_cfg );
 196
 197     p_sys          = malloc( sizeof( out_sout_stream_sys_t ) );
 198     p_sys->b_inited = false;
 199
 200     var_Create( p_this->p_libvlc, "bridge-lock", VLC_VAR_MUTEX );
 201     var_Get( p_this->p_libvlc, "bridge-lock", &val );
 202     p_sys->p_lock = val.p_address;
 203
 204     var_Get( p_stream, SOUT_CFG_PREFIX_OUT "id", &val );
 205     p_sys->i_id = val.i_int;
 206
 207     var_Get( p_stream, SOUT_CFG_PREFIX_OUT "in-name", &val );
 208     if( asprintf( &p_sys->psz_name, "bridge-struct-%s", val.psz_string )<0 )
 209     {
 210         free( val.psz_string );
 211         free( p_sys );
 212         return VLC_ENOMEM;
 213     }
 214     free( val.psz_string );
 215
 216     p_stream->pf_add    = AddOut;
 217     p_stream->pf_del    = DelOut;
 218     p_stream->pf_send   = SendOut;
 219
 220     p_stream->p_sys     = (sout_stream_sys_t *)p_sys;
 221
 222     p_stream->p_sout->i_out_pace_nocontrol++;
 223
 224     return VLC_SUCCESS;
 225 }
 226
 227 /*****************************************************************************
 228  * CloseOut:
 229  *****************************************************************************/
 230 static void CloseOut( vlc_object_t * p_this )
 231 {
 232     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 233     out_sout_stream_sys_t *p_sys = (out_sout_stream_sys_t *)p_stream->p_sys;
 234
 235     p_stream->p_sout->i_out_pace_nocontrol--;
 236
 237     free( p_sys->psz_name );
 238     free( p_sys );
 239 }
 240
 241 static sout_stream_id_t * AddOut( sout_stream_t *p_stream, es_format_t *p_fmt )
 242 {
 243     out_sout_stream_sys_t *p_sys = (out_sout_stream_sys_t *)p_stream->p_sys;
 244     bridge_t *p_bridge;
 245     bridged_es_t *p_es;
 246     int i;
 247
 248     if ( p_sys->b_inited )
 249     {
 250         msg_Err( p_stream, "bridge-out can only handle 1 es at a time." );
 251         return NULL;
 252     }
 253     p_sys->b_inited = true;
 254
 255     vlc_mutex_lock( p_sys->p_lock );
 256
 257     p_bridge = var_GetAddress( p_stream, p_sys->psz_name );
 258     if ( p_bridge == NULL )
 259     {
 260         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 261         p_bridge = malloc( sizeof( bridge_t ) );
 262
 263         var_Create( p_libvlc, p_sys->psz_name, VLC_VAR_ADDRESS );
 264         var_SetAddress( p_libvlc, p_sys->psz_name, p_bridge );
 265
 266         p_bridge->i_es_num = 0;
 267         p_bridge->pp_es = NULL;
 268     }
 269
 270     for ( i = 0; i < p_bridge->i_es_num; i++ )
 271     {
 272         if ( p_bridge->pp_es[i]->b_empty && !p_bridge->pp_es[i]->b_changed )
 273             break;
 274     }
 275
 276     if ( i == p_bridge->i_es_num )
 277     {
 278         p_bridge->pp_es = realloc( p_bridge->pp_es,
 279                                    (p_bridge->i_es_num + 1)
 280                                      * sizeof(bridged_es_t *) );
 281         p_bridge->i_es_num++;
 282         p_bridge->pp_es[i] = malloc( sizeof(bridged_es_t) );
 283     }
 284
 285     p_sys->p_es = p_es = p_bridge->pp_es[i];
 286
 287     p_es->fmt = *p_fmt;
 288     p_es->fmt.i_id = p_sys->i_id;
 289     p_es->p_block = NULL;
 290     p_es->pp_last = &p_es->p_block;
 291     p_es->b_empty = false;
 292
 293     p_es->id = NULL;
 294     p_es->i_last = 0;
 295     p_es->b_changed = true;
 296
 297     msg_Dbg( p_stream, "bridging out input codec=%4.4s id=%d pos=%d",
 298              (char*)&p_es->fmt.i_codec, p_es->fmt.i_id, i );
 299
 300     vlc_mutex_unlock( p_sys->p_lock );
 301
 302     return (sout_stream_id_t *)p_sys;
 303 }
 304
 305 static int DelOut( sout_stream_t *p_stream, sout_stream_id_t *id )
 306 {
 307     VLC_UNUSED(id);
 308     out_sout_stream_sys_t *p_sys = (out_sout_stream_sys_t *)p_stream->p_sys;
 309     bridged_es_t *p_es;
 310
 311     if ( !p_sys->b_inited )
 312     {
 313         return VLC_SUCCESS;
 314     }
 315
 316     vlc_mutex_lock( p_sys->p_lock );
 317
 318     p_es = p_sys->p_es;
 319
 320     p_es->b_empty = true;
 321     block_ChainRelease( p_es->p_block );
 322     p_es->p_block = false;
 323
 324     p_es->b_changed = true;
 325     vlc_mutex_unlock( p_sys->p_lock );
 326
 327     p_sys->b_inited = false;
 328
 329     return VLC_SUCCESS;
 330 }
 331
 332 static int SendOut( sout_stream_t *p_stream, sout_stream_id_t *id,
 333                     block_t *p_buffer )
 334 {
 335     out_sout_stream_sys_t *p_sys = (out_sout_stream_sys_t *)p_stream->p_sys;
 336     bridged_es_t *p_es;
 337
 338     if ( (out_sout_stream_sys_t *)id != p_sys )
 339     {
 340         block_ChainRelease( p_buffer );
 341         return VLC_SUCCESS;
 342     }
 343
 344     vlc_mutex_lock( p_sys->p_lock );
 345
 346     p_es = p_sys->p_es;
 347     *p_es->pp_last = p_buffer;
 348     while ( p_buffer != NULL )
 349     {
 350         p_es->pp_last = &p_buffer->p_next;
 351         p_buffer = p_buffer->p_next;
 352     }
 353
 354     vlc_mutex_unlock( p_sys->p_lock );
 355
 356     return VLC_SUCCESS;
 357 }
 358
 359
 360 /*
 361  * Bridge in
 362  */
 363
 364 typedef struct in_sout_stream_sys_t
 365 {
 366     sout_stream_t *p_out;
 367     vlc_mutex_t *p_lock;
 368     int i_id_offset;
 369     mtime_t i_delay;
 370
 371     char *psz_name;
 372
 373     bool b_placeholder;
 374     bool b_switch_on_iframe;
 375     int i_state;
 376     mtime_t i_placeholder_delay;
 377     sout_stream_id_t *id_video;
 378     mtime_t i_last_video;
 379     sout_stream_id_t *id_audio;
 380     mtime_t i_last_audio;
 381 } in_sout_stream_sys_t;
 382
 383 enum { placeholder_on, placeholder_off };
 384
 385 /*****************************************************************************
 386  * OpenIn:
 387  *****************************************************************************/
 388 static int OpenIn( vlc_object_t *p_this )
 389 {
 390     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 391     in_sout_stream_sys_t *p_sys;
 392     vlc_value_t val;
 393
 394     p_sys          = malloc( sizeof( in_sout_stream_sys_t ) );
 395
 396     p_sys->p_out = sout_StreamNew( p_stream->p_sout, p_stream->psz_next );
 397     if( !p_sys->p_out )
 398     {
 399         msg_Err( p_stream, "cannot create chain" );
 400         free( p_sys );
 401         return VLC_EGENERIC;
 402     }
 403
 404     config_ChainParse( p_stream, SOUT_CFG_PREFIX_IN, ppsz_sout_options_in,
 405                    p_stream->p_cfg );
 406
 407     var_Create( p_this->p_libvlc, "bridge-lock", VLC_VAR_MUTEX );
 408     var_Get( p_this->p_libvlc, "bridge-lock", &val );
 409     p_sys->p_lock = val.p_address;
 410
 411     var_Get( p_stream, SOUT_CFG_PREFIX_IN "id-offset", &val );
 412     p_sys->i_id_offset = val.i_int;
 413
 414     var_Get( p_stream, SOUT_CFG_PREFIX_IN "delay", &val );
 415     p_sys->i_delay = (mtime_t)val.i_int * 1000;
 416
 417     var_Get( p_stream, SOUT_CFG_PREFIX_IN "name", &val );
 418     if( asprintf( &p_sys->psz_name, "bridge-struct-%s", val.psz_string )<0 )
 419     {
 420         free( val.psz_string );
 421         free( p_sys );
 422         return VLC_ENOMEM;
 423     }
 424     free( val.psz_string );
 425
 426     var_Get( p_stream, SOUT_CFG_PREFIX_IN "placeholder", &val );
 427     p_sys->b_placeholder = val.b_bool;
 428
 429     var_Get( p_stream, SOUT_CFG_PREFIX_IN "placeholder-switch-on-iframe", &val);
 430     p_sys->b_switch_on_iframe = val.b_bool;
 431
 432     p_sys->i_state = placeholder_on;
 433
 434     var_Get( p_stream, SOUT_CFG_PREFIX_IN "placeholder-delay", &val );
 435     p_sys->i_placeholder_delay = (mtime_t)val.i_int * 1000;
 436
 437     p_sys->i_last_video = 0;
 438     p_sys->i_last_audio = 0;
 439     p_sys->id_video = NULL;
 440     p_sys->id_audio = NULL;
 441
 442     p_stream->pf_add    = AddIn;
 443     p_stream->pf_del    = DelIn;
 444     p_stream->pf_send   = SendIn;
 445
 446     p_stream->p_sys     = (sout_stream_sys_t *)p_sys;
 447
 448     /* update p_sout->i_out_pace_nocontrol */
 449     p_stream->p_sout->i_out_pace_nocontrol++;
 450
 451     return VLC_SUCCESS;
 452 }
 453
 454 /*****************************************************************************
 455  * CloseIn:
 456  *****************************************************************************/
 457 static void CloseIn( vlc_object_t * p_this )
 458 {
 459     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 460     in_sout_stream_sys_t *p_sys = (in_sout_stream_sys_t *)p_stream->p_sys;
 461
 462     sout_StreamDelete( p_sys->p_out );
 463     p_stream->p_sout->i_out_pace_nocontrol--;
 464
 465     free( p_sys->psz_name );
 466     free( p_sys );
 467 }
 468
 469 struct sout_stream_id_t
 470 {
 471     sout_stream_id_t *id;
 472     int i_cat; /* es category. Used for placeholder option */
 473 };
 474
 475 static sout_stream_id_t * AddIn( sout_stream_t *p_stream, es_format_t *p_fmt )
 476 {
 477     in_sout_stream_sys_t *p_sys = (in_sout_stream_sys_t *)p_stream->p_sys;
 478
 479     sout_stream_id_t *id = malloc( sizeof( sout_stream_id_t ) );
 480     if( !id ) return NULL;
 481
 482     id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
 483     if( !id->id )
 484     {
 485         free( id );
 486         return NULL;
 487     }
 488
 489     if( p_sys->b_placeholder )
 490     {
 491         id->i_cat = p_fmt->i_cat;
 492         switch( p_fmt->i_cat )
 493         {
 494             case VIDEO_ES:
 495                 if( p_sys->id_video != NULL )
 496                     msg_Err( p_stream, "We already had a video es!" );
 497                 p_sys->id_video = id->id;
 498                 break;
 499             case AUDIO_ES:
 500                 if( p_sys->id_audio != NULL )
 501                     msg_Err( p_stream, "We already had an audio es!" );
 502                 p_sys->id_audio = id->id;
 503                 break;
 504         }
 505     }
 506
 507     return id;
 508 }
 509
 510 static int DelIn( sout_stream_t *p_stream, sout_stream_id_t *id )
 511 {
 512     in_sout_stream_sys_t *p_sys = (in_sout_stream_sys_t *)p_stream->p_sys;
 513
 514     if( id == p_sys->id_video ) p_sys->id_video = NULL;
 515     if( id == p_sys->id_audio ) p_sys->id_audio = NULL;
 516
 517     int ret = p_sys->p_out->pf_del( p_sys->p_out, id->id );
 518
 519     free( id );
 520     return ret;
 521 }
 522
 523 static int SendIn( sout_stream_t *p_stream, sout_stream_id_t *id,
 524                    block_t *p_buffer )
 525 {
 526     in_sout_stream_sys_t *p_sys = (in_sout_stream_sys_t *)p_stream->p_sys;
 527     bridge_t *p_bridge;
 528     bool b_no_es = true;
 529     int i;
 530     int i_date = mdate();
 531
 532     /* First forward the packet for our own ES */
 533     if( !p_sys->b_placeholder )
 534         p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 535
 536     /* Then check all bridged streams */
 537     vlc_mutex_lock( p_sys->p_lock );
 538
 539     p_bridge = var_GetAddress( p_stream, p_sys->psz_name );
 540
 541     if( p_bridge )
 542     {
 543     for ( i = 0; i < p_bridge->i_es_num; i++ )
 544     {
 545         if ( !p_bridge->pp_es[i]->b_empty )
 546             b_no_es = false;
 547
 548         while ( p_bridge->pp_es[i]->p_block != NULL
 549                  && (p_bridge->pp_es[i]->p_block->i_dts + p_sys->i_delay
 550                        < i_date
 551                       || p_bridge->pp_es[i]->p_block->i_dts + p_sys->i_delay
 552                           < p_bridge->pp_es[i]->i_last) )
 553         {
 554             block_t *p_block = p_bridge->pp_es[i]->p_block;
 555             msg_Dbg( p_stream, "dropping a packet (%"PRId64 ")",
 556                      i_date - p_block->i_dts - p_sys->i_delay );
 557             p_bridge->pp_es[i]->p_block
 558                 = p_bridge->pp_es[i]->p_block->p_next;
 559             block_Release( p_block );
 560         }
 561
 562         if ( p_bridge->pp_es[i]->p_block == NULL )
 563         {
 564             p_bridge->pp_es[i]->pp_last = &p_bridge->pp_es[i]->p_block;
 565         }
 566
 567         if ( p_bridge->pp_es[i]->b_changed )
 568         {
 569             if ( p_bridge->pp_es[i]->b_empty && p_bridge->pp_es[i]->id != NULL )
 570             {
 571                 p_sys->p_out->pf_del( p_sys->p_out, p_bridge->pp_es[i]->id );
 572             }
 573             else
 574             {
 575                 /* We need at least two packets to enter the mux. */
 576                 if ( p_bridge->pp_es[i]->p_block == NULL
 577                       || p_bridge->pp_es[i]->p_block->p_next == NULL )
 578                 {
 579                     continue;
 580                 }
 581
 582                 p_bridge->pp_es[i]->fmt.i_id += p_sys->i_id_offset;
 583                 if( !p_sys->b_placeholder )
 584                 {
 585                     p_bridge->pp_es[i]->id = p_sys->p_out->pf_add(
 586                                 p_sys->p_out, &p_bridge->pp_es[i]->fmt );
 587                     if ( p_bridge->pp_es[i]->id == NULL )
 588                     {
 589                         msg_Warn( p_stream, "couldn't create chain for id %d",
 590                                   p_bridge->pp_es[i]->fmt.i_id );
 591                     }
 592                 }
 593                 msg_Dbg( p_stream, "bridging in input codec=%4.4s id=%d pos=%d",
 594                          (char*)&p_bridge->pp_es[i]->fmt.i_codec,
 595                          p_bridge->pp_es[i]->fmt.i_id, i );
 596             }
 597         }
 598         p_bridge->pp_es[i]->b_changed = false;
 599
 600         if ( p_bridge->pp_es[i]->b_empty )
 601             continue;
 602
 603         if ( p_bridge->pp_es[i]->p_block == NULL )
 604         {
 605             if ( p_bridge->pp_es[i]->id != NULL
 606                   && p_bridge->pp_es[i]->i_last < i_date )
 607             {
 608                 if( !p_sys->b_placeholder )
 609                     p_sys->p_out->pf_del( p_sys->p_out,
 610                                           p_bridge->pp_es[i]->id );
 611                 p_bridge->pp_es[i]->fmt.i_id -= p_sys->i_id_offset;
 612                 p_bridge->pp_es[i]->b_changed = true;
 613                 p_bridge->pp_es[i]->id = NULL;
 614             }
 615             continue;
 616         }
 617
 618         if ( p_bridge->pp_es[i]->id != NULL || p_sys->b_placeholder)
 619         {
 620             block_t *p_block = p_bridge->pp_es[i]->p_block;
 621             while ( p_block != NULL )
 622             {
 623                 p_bridge->pp_es[i]->i_last = p_block->i_dts;
 624                 p_block->i_pts += p_sys->i_delay;
 625                 p_block->i_dts += p_sys->i_delay;
 626                 p_block = p_block->p_next;
 627             }
 628             sout_stream_id_t *newid = NULL;
 629             if( p_sys->b_placeholder )
 630             {
 631                 switch( p_bridge->pp_es[i]->fmt.i_cat )
 632                 {
 633                     case VIDEO_ES:
 634                         p_sys->i_last_video = i_date;
 635                         newid = p_sys->id_video;
 636                         if( !newid )
 637                             break;
 638                         if( !p_sys->b_switch_on_iframe ||
 639                             p_sys->i_state == placeholder_off ||
 640                             ( p_bridge->pp_es[i]->fmt.i_cat == VIDEO_ES &&
 641                               p_bridge->pp_es[i]->p_block->i_flags & BLOCK_FLAG_TYPE_I ) )
 642                         {
 643                             p_sys->p_out->pf_send( p_sys->p_out,
 644                                        newid,
 645                                        p_bridge->pp_es[i]->p_block );
 646                             p_sys->i_state = placeholder_off;
 647                         }
 648                         break;
 649                     case AUDIO_ES:
 650                         newid = p_sys->id_audio;
 651                         if( !newid )
 652                             break;
 653                         p_sys->i_last_audio = i_date;
 654                     default:
 655                         p_sys->p_out->pf_send( p_sys->p_out,
 656                                    newid?newid:p_bridge->pp_es[i]->id,
 657                                    p_bridge->pp_es[i]->p_block );
 658                         break;
 659                 }
 660             }
 661             else /* !b_placeholder */
 662                 p_sys->p_out->pf_send( p_sys->p_out,
 663                                        p_bridge->pp_es[i]->id,
 664                                        p_bridge->pp_es[i]->p_block );
 665         }
 666         else
 667         {
 668             block_ChainRelease( p_bridge->pp_es[i]->p_block );
 669         }
 670
 671         p_bridge->pp_es[i]->p_block = NULL;
 672         p_bridge->pp_es[i]->pp_last = &p_bridge->pp_es[i]->p_block;
 673     }
 674
 675     if( b_no_es )
 676     {
 677         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 678         for ( i = 0; i < p_bridge->i_es_num; i++ )
 679             free( p_bridge->pp_es[i] );
 680         free( p_bridge->pp_es );
 681         free( p_bridge );
 682         var_Destroy( p_libvlc, p_sys->psz_name );
 683     }
 684     }
 685
 686     if( p_sys->b_placeholder )
 687     {
 688         switch( id->i_cat )
 689         {
 690             case VIDEO_ES:
 691                 if( ( p_sys->i_last_video + p_sys->i_placeholder_delay < i_date
 692                     && (  !p_sys->b_switch_on_iframe
 693                        || p_buffer->i_flags & BLOCK_FLAG_TYPE_I ) )
 694                   || p_sys->i_state == placeholder_on )
 695                 {
 696                     p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 697                     p_sys->i_state = placeholder_on;
 698                 }
 699                 else
 700                     block_Release( p_buffer );
 701                 break;
 702
 703             case AUDIO_ES:
 704                 if( p_sys->i_last_audio + p_sys->i_placeholder_delay < i_date )
 705                     p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 706                 else
 707                     block_Release( p_buffer );
 708                 break;
 709
 710             default:
 711                 block_Release( p_buffer ); /* FIXME: placeholder subs anyone? */
 712                 break;
 713         }
 714     }
 715
 716     vlc_mutex_unlock( p_sys->p_lock );
 717
 718     return VLC_SUCCESS;
 719 }