1 /*****************************************************************************
2 * stream_output.c : stream output module
3 *****************************************************************************
4 * Copyright (C) 2002-2007 the VideoLAN team
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * Laurent Aimar <fenrir@via.ecp.fr>
9 * Eric Petit <titer@videolan.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
36 #include <vlc_common.h>
38 #include <stdlib.h> /* free() */
39 #include <stdio.h> /* sprintf() */
44 #include "stream_output.h"
47 #include <vlc_block.h>
48 #include <vlc_codec.h>
49 #include <vlc_modules.h>
51 #include "input/input_interface.h"
53 #define VLC_CODEC_NULL VLC_FOURCC( 'n', 'u', 'l', 'l' )
56 /*****************************************************************************
58 *****************************************************************************/
59 static char *sout_stream_url_to_chain( bool, const char * );
73 /* mrl_Parse: parse psz_mrl and fill p_mrl */
74 static int mrl_Parse( mrl_t *p_mrl, const char *psz_mrl );
75 /* mrl_Clean: clean p_mrl after a call to mrl_Parse */
76 static void mrl_Clean( mrl_t *p_mrl );
78 #undef sout_NewInstance
80 /*****************************************************************************
81 * sout_NewInstance: creates a new stream output instance
82 *****************************************************************************/
83 sout_instance_t *sout_NewInstance( vlc_object_t *p_parent, const char *psz_dest )
85 static const char typename[] = "stream output";
86 sout_instance_t *p_sout;
89 if( psz_dest && psz_dest[0] == '#' )
91 psz_chain = strdup( &psz_dest[1] );
95 psz_chain = sout_stream_url_to_chain(
96 var_InheritBool(p_parent, "sout-display"), psz_dest );
101 /* *** Allocate descriptor *** */
102 p_sout = vlc_custom_create( p_parent, sizeof( *p_sout ),
103 VLC_OBJECT_GENERIC, typename );
107 msg_Dbg( p_sout, "using sout chain=`%s'", psz_chain );
109 /* *** init descriptor *** */
110 p_sout->psz_sout = strdup( psz_dest );
111 p_sout->p_meta = NULL;
112 p_sout->i_out_pace_nocontrol = 0;
113 p_sout->p_sys = NULL;
115 vlc_mutex_init( &p_sout->lock );
116 p_sout->p_stream = NULL;
118 /* attach it for inherit */
119 vlc_object_attach( p_sout, p_parent );
121 var_Create( p_sout, "sout-mux-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
123 p_sout->p_stream = sout_StreamChainNew( p_sout, psz_chain, NULL, NULL );
124 if( p_sout->p_stream )
130 msg_Err( p_sout, "stream chain failed for `%s'", psz_chain );
133 FREENULL( p_sout->psz_sout );
135 vlc_object_release( p_sout );
139 /*****************************************************************************
140 * sout_DeleteInstance: delete a previously allocated instance
141 *****************************************************************************/
142 void sout_DeleteInstance( sout_instance_t * p_sout )
144 /* remove the stream out chain */
145 sout_StreamChainDelete( p_sout->p_stream, NULL );
147 /* *** free all string *** */
148 FREENULL( p_sout->psz_sout );
153 vlc_meta_Delete( p_sout->p_meta );
156 vlc_mutex_destroy( &p_sout->lock );
158 /* *** free structure *** */
159 vlc_object_release( p_sout );
162 /*****************************************************************************
164 *****************************************************************************/
165 void sout_UpdateStatistic( sout_instance_t *p_sout, sout_statistic_t i_type, int i_delta )
167 if( !libvlc_stats( p_sout ) )
171 input_thread_t *p_input = vlc_object_find( p_sout, VLC_OBJECT_INPUT, FIND_PARENT );
178 case SOUT_STATISTIC_DECODED_VIDEO:
179 i_input_type = INPUT_STATISTIC_DECODED_VIDEO;
181 case SOUT_STATISTIC_DECODED_AUDIO:
182 i_input_type = INPUT_STATISTIC_DECODED_AUDIO;
184 case SOUT_STATISTIC_DECODED_SUBTITLE:
185 i_input_type = INPUT_STATISTIC_DECODED_SUBTITLE;
188 case SOUT_STATISTIC_SENT_PACKET:
189 i_input_type = INPUT_STATISTIC_SENT_PACKET;
192 case SOUT_STATISTIC_SENT_BYTE:
193 i_input_type = INPUT_STATISTIC_SENT_BYTE;
197 msg_Err( p_sout, "Not yet supported statistic type %d", i_type );
198 vlc_object_release( p_input );
202 input_UpdateStatistic( p_input, i_input_type, i_delta );
204 vlc_object_release( p_input );
206 /*****************************************************************************
208 *****************************************************************************/
209 sout_packetizer_input_t *sout_InputNew( sout_instance_t *p_sout,
212 sout_packetizer_input_t *p_input;
214 /* *** create a packetizer input *** */
215 p_input = malloc( sizeof( sout_packetizer_input_t ) );
216 if( !p_input ) return NULL;
217 p_input->p_sout = p_sout;
218 p_input->p_fmt = p_fmt;
220 msg_Dbg( p_sout, "adding a new sout input (sout_input:%p)", p_input );
222 if( p_fmt->i_codec == VLC_CODEC_NULL )
224 vlc_object_release( p_sout );
228 /* *** add it to the stream chain */
229 vlc_mutex_lock( &p_sout->lock );
230 p_input->id = p_sout->p_stream->pf_add( p_sout->p_stream, p_fmt );
231 vlc_mutex_unlock( &p_sout->lock );
233 if( p_input->id == NULL )
242 /*****************************************************************************
244 *****************************************************************************/
245 int sout_InputDelete( sout_packetizer_input_t *p_input )
247 sout_instance_t *p_sout = p_input->p_sout;
249 msg_Dbg( p_sout, "removing a sout input (sout_input:%p)", p_input );
251 if( p_input->p_fmt->i_codec != VLC_CODEC_NULL )
253 vlc_mutex_lock( &p_sout->lock );
254 p_sout->p_stream->pf_del( p_sout->p_stream, p_input->id );
255 vlc_mutex_unlock( &p_sout->lock );
260 return( VLC_SUCCESS);
263 /*****************************************************************************
265 *****************************************************************************/
266 int sout_InputSendBuffer( sout_packetizer_input_t *p_input,
269 sout_instance_t *p_sout = p_input->p_sout;
272 if( p_input->p_fmt->i_codec == VLC_CODEC_NULL )
274 block_Release( p_buffer );
278 if( p_buffer->i_dts <= VLC_TS_INVALID )
280 msg_Warn( p_sout, "trying to send non-dated packet to stream output!");
281 block_Release( p_buffer );
285 vlc_mutex_lock( &p_sout->lock );
286 i_ret = p_sout->p_stream->pf_send( p_sout->p_stream,
287 p_input->id, p_buffer );
288 vlc_mutex_unlock( &p_sout->lock );
293 #undef sout_AccessOutNew
294 /*****************************************************************************
295 * sout_AccessOutNew: allocate a new access out
296 *****************************************************************************/
297 sout_access_out_t *sout_AccessOutNew( vlc_object_t *p_sout,
298 const char *psz_access, const char *psz_name )
300 static const char typename[] = "access out";
301 sout_access_out_t *p_access;
304 p_access = vlc_custom_create( p_sout, sizeof( *p_access ),
305 VLC_OBJECT_GENERIC, typename );
309 psz_next = config_ChainCreate( &p_access->psz_access, &p_access->p_cfg,
312 p_access->psz_path = strdup( psz_name ? psz_name : "" );
313 p_access->p_sys = NULL;
314 p_access->pf_seek = NULL;
315 p_access->pf_read = NULL;
316 p_access->pf_write = NULL;
317 p_access->pf_control = NULL;
318 p_access->p_module = NULL;
320 p_access->i_writes = 0;
321 p_access->i_sent_bytes = 0;
323 vlc_object_attach( p_access, p_sout );
326 module_need( p_access, "sout access", p_access->psz_access, true );
328 if( !p_access->p_module )
330 free( p_access->psz_access );
331 free( p_access->psz_path );
332 vlc_object_release( p_access );
338 /*****************************************************************************
339 * sout_AccessDelete: delete an access out
340 *****************************************************************************/
341 void sout_AccessOutDelete( sout_access_out_t *p_access )
343 if( p_access->p_module )
345 module_unneed( p_access, p_access->p_module );
347 free( p_access->psz_access );
349 config_ChainDestroy( p_access->p_cfg );
351 free( p_access->psz_path );
353 vlc_object_release( p_access );
356 /*****************************************************************************
358 *****************************************************************************/
359 int sout_AccessOutSeek( sout_access_out_t *p_access, off_t i_pos )
361 return p_access->pf_seek( p_access, i_pos );
364 /*****************************************************************************
366 *****************************************************************************/
367 ssize_t sout_AccessOutRead( sout_access_out_t *p_access, block_t *p_buffer )
369 return( p_access->pf_read ?
370 p_access->pf_read( p_access, p_buffer ) : VLC_EGENERIC );
373 /*****************************************************************************
375 *****************************************************************************/
376 ssize_t sout_AccessOutWrite( sout_access_out_t *p_access, block_t *p_buffer )
379 const unsigned i_packets_gather = 30;
380 p_access->i_writes++;
381 p_access->i_sent_bytes += p_buffer->i_buffer;
382 if( (p_access->i_writes % i_packets_gather) == 0 )
384 sout_UpdateStatistic( p_access->p_sout, SOUT_STATISTIC_SENT_PACKET, i_packets_gather );
385 sout_UpdateStatistic( p_access->p_sout, SOUT_STATISTIC_SENT_BYTE, p_access->i_sent_bytes );
386 p_access->i_sent_bytes = 0;
389 return p_access->pf_write( p_access, p_buffer );
393 * sout_AccessOutControl
395 int sout_AccessOutControl (sout_access_out_t *access, int query, ...)
400 va_start (ap, query);
401 if (access->pf_control)
402 ret = access->pf_control (access, query, ap);
409 /*****************************************************************************
410 * sout_MuxNew: create a new mux
411 *****************************************************************************/
412 sout_mux_t * sout_MuxNew( sout_instance_t *p_sout, const char *psz_mux,
413 sout_access_out_t *p_access )
415 static const char typename[] = "mux";
419 p_mux = vlc_custom_create( p_sout, sizeof( *p_mux ), VLC_OBJECT_GENERIC,
424 p_mux->p_sout = p_sout;
425 psz_next = config_ChainCreate( &p_mux->psz_mux, &p_mux->p_cfg, psz_mux );
428 p_mux->p_access = p_access;
429 p_mux->pf_control = NULL;
430 p_mux->pf_addstream = NULL;
431 p_mux->pf_delstream = NULL;
432 p_mux->pf_mux = NULL;
433 p_mux->i_nb_inputs = 0;
434 p_mux->pp_inputs = NULL;
437 p_mux->p_module = NULL;
439 p_mux->b_add_stream_any_time = false;
440 p_mux->b_waiting_stream = true;
441 p_mux->i_add_stream_start = -1;
443 vlc_object_attach( p_mux, p_sout );
446 module_need( p_mux, "sout mux", p_mux->psz_mux, true );
448 if( p_mux->p_module == NULL )
450 FREENULL( p_mux->psz_mux );
452 vlc_object_release( p_mux );
456 /* *** probe mux capacity *** */
457 if( p_mux->pf_control )
459 int b_answer = false;
461 if( sout_MuxControl( p_mux, MUX_CAN_ADD_STREAM_WHILE_MUXING,
469 msg_Dbg( p_sout, "muxer support adding stream at any time" );
470 p_mux->b_add_stream_any_time = true;
471 p_mux->b_waiting_stream = false;
473 /* If we control the output pace then it's better to wait before
474 * starting muxing (generates better streams/files). */
475 if( !p_sout->i_out_pace_nocontrol )
479 else if( sout_MuxControl( p_mux, MUX_GET_ADD_STREAM_WAIT,
487 msg_Dbg( p_sout, "muxer prefers to wait for all ES before "
489 p_mux->b_waiting_stream = true;
497 /*****************************************************************************
499 *****************************************************************************/
500 void sout_MuxDelete( sout_mux_t *p_mux )
502 if( p_mux->p_module )
504 module_unneed( p_mux, p_mux->p_module );
506 free( p_mux->psz_mux );
508 config_ChainDestroy( p_mux->p_cfg );
510 vlc_object_release( p_mux );
513 /*****************************************************************************
515 *****************************************************************************/
516 sout_input_t *sout_MuxAddStream( sout_mux_t *p_mux, es_format_t *p_fmt )
518 sout_input_t *p_input;
520 if( !p_mux->b_add_stream_any_time && !p_mux->b_waiting_stream )
522 msg_Err( p_mux, "cannot add a new stream (unsupported while muxing "
523 "to this format). You can try increasing sout-mux-caching value" );
527 msg_Dbg( p_mux, "adding a new input" );
529 /* create a new sout input */
530 p_input = malloc( sizeof( sout_input_t ) );
533 p_input->p_sout = p_mux->p_sout;
534 p_input->p_fmt = p_fmt;
535 p_input->p_fifo = block_FifoNew();
536 p_input->p_sys = NULL;
538 TAB_APPEND( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input );
539 if( p_mux->pf_addstream( p_mux, p_input ) < 0 )
541 msg_Err( p_mux, "cannot add this stream" );
542 TAB_REMOVE( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input );
543 block_FifoRelease( p_input->p_fifo );
551 /*****************************************************************************
552 * sout_MuxDeleteStream:
553 *****************************************************************************/
554 void sout_MuxDeleteStream( sout_mux_t *p_mux, sout_input_t *p_input )
558 if( p_mux->b_waiting_stream
559 && block_FifoCount( p_input->p_fifo ) > 0 )
561 /* We stop waiting, and call the muxer for taking care of the data
562 * before we remove this es */
563 p_mux->b_waiting_stream = false;
564 p_mux->pf_mux( p_mux );
567 TAB_FIND( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input, i_index );
570 if( p_mux->pf_delstream( p_mux, p_input ) < 0 )
572 msg_Err( p_mux, "cannot delete this stream from mux" );
575 /* remove the entry */
576 TAB_REMOVE( p_mux->i_nb_inputs, p_mux->pp_inputs, p_input );
578 if( p_mux->i_nb_inputs == 0 )
580 msg_Warn( p_mux, "no more input streams for this mux" );
583 block_FifoRelease( p_input->p_fifo );
588 /*****************************************************************************
589 * sout_MuxSendBuffer:
590 *****************************************************************************/
591 void sout_MuxSendBuffer( sout_mux_t *p_mux, sout_input_t *p_input,
594 block_FifoPut( p_input->p_fifo, p_buffer );
596 if( p_mux->p_sout->i_out_pace_nocontrol )
598 mtime_t current_date = mdate();
599 if ( current_date > p_buffer->i_dts )
600 msg_Warn( p_mux, "late buffer for mux input (%"PRId64")",
601 current_date - p_buffer->i_dts );
604 if( p_mux->b_waiting_stream )
606 const int64_t i_caching = var_GetInteger( p_mux->p_sout, "sout-mux-caching" ) * INT64_C(1000);
608 if( p_mux->i_add_stream_start < 0 )
609 p_mux->i_add_stream_start = p_buffer->i_dts;
611 /* Wait until we have enought data before muxing */
612 if( p_mux->i_add_stream_start < 0 ||
613 p_buffer->i_dts < p_mux->i_add_stream_start + i_caching )
615 p_mux->b_waiting_stream = false;
617 p_mux->pf_mux( p_mux );
621 /*****************************************************************************
622 * sout_MuxGetStream: find stream to be muxed
623 *****************************************************************************/
624 int sout_MuxGetStream( sout_mux_t *p_mux, int i_blocks, mtime_t *pi_dts )
629 for( int i = 0; i < p_mux->i_nb_inputs; i++ )
631 sout_input_t *p_input = p_mux->pp_inputs[i];
634 if( block_FifoCount( p_input->p_fifo ) < i_blocks )
636 if( p_input->p_fmt->i_cat != SPU_ES )
640 /* FIXME: SPU muxing */
644 p_data = block_FifoShow( p_input->p_fifo );
645 if( i_stream < 0 || p_data->i_dts < i_dts )
648 i_dts = p_data->i_dts;
652 if( pi_dts ) *pi_dts = i_dts;
658 /*****************************************************************************
660 *****************************************************************************/
661 static int mrl_Parse( mrl_t *p_mrl, const char *psz_mrl )
663 char * psz_dup = strdup( psz_mrl );
664 char * psz_parser = psz_dup;
665 const char * psz_access;
666 const char * psz_way;
669 /* *** first parse psz_dest */
670 while( *psz_parser && *psz_parser != ':' )
672 if( *psz_parser == '{' )
674 while( *psz_parser && *psz_parser != '}' )
688 #if defined( WIN32 ) || defined( UNDER_CE )
689 if( psz_parser - psz_dup == 1 )
691 /* msg_Warn( p_sout, "drive letter %c: found in source string",
699 psz_access = psz_way = "";
704 *psz_parser++ = '\0';
706 /* let's skip '//' */
707 if( psz_parser[0] == '/' && psz_parser[1] == '/' )
712 psz_name = psz_parser ;
714 /* Come back to parse the access and mux plug-ins */
715 psz_parser = psz_dup;
722 else if( *psz_parser == '/' )
730 psz_access = psz_parser;
732 while( *psz_parser && *psz_parser != '/' )
734 if( *psz_parser == '{' )
736 while( *psz_parser && *psz_parser != '}' )
751 if( *psz_parser == '/' )
753 *psz_parser++ = '\0';
764 psz_way = psz_parser;
768 p_mrl->psz_access = strdup( psz_access );
769 p_mrl->psz_way = strdup( psz_way );
770 p_mrl->psz_name = strdup( psz_name );
773 return( VLC_SUCCESS );
777 /* mrl_Clean: clean p_mrl after a call to mrl_Parse */
778 static void mrl_Clean( mrl_t *p_mrl )
780 FREENULL( p_mrl->psz_access );
781 FREENULL( p_mrl->psz_way );
782 FREENULL( p_mrl->psz_name );
786 /****************************************************************************
787 ****************************************************************************
791 ****************************************************************************
792 ****************************************************************************/
794 /* Destroy a "stream_out" module */
795 static void sout_StreamDelete( sout_stream_t *p_stream )
797 msg_Dbg( p_stream, "destroying chain... (name=%s)", p_stream->psz_name );
799 if( p_stream->p_module ) module_unneed( p_stream, p_stream->p_module );
801 FREENULL( p_stream->psz_name );
803 config_ChainDestroy( p_stream->p_cfg );
805 msg_Dbg( p_stream, "destroying chain done" );
806 vlc_object_release( p_stream );
809 /* Destroy a "stream_out" modules chain
811 * p_first is the first module to be destroyed in the chain
812 * p_last is the last module to be destroyed
813 * if NULL, all modules are destroyed
814 * if not NULL, modules following it must be destroyed separately
816 void sout_StreamChainDelete(sout_stream_t *p_first, sout_stream_t *p_last)
818 while(p_first != NULL)
820 sout_stream_t *p_next = p_first->p_next;
822 sout_StreamDelete(p_first);
823 if(p_first == p_last)
829 /* Create a "stream_out" module, which may forward its ES to p_next module */
831 * XXX name and p_cfg are used (-> do NOT free them)
833 static sout_stream_t *sout_StreamNew( sout_instance_t *p_sout, char *psz_name,
834 config_chain_t *p_cfg, sout_stream_t *p_next)
836 static const char typename[] = "stream out";
837 sout_stream_t *p_stream;
841 p_stream = vlc_custom_create( p_sout, sizeof( *p_stream ),
842 VLC_OBJECT_GENERIC, typename );
846 p_stream->p_sout = p_sout;
847 p_stream->p_sys = NULL;
848 p_stream->psz_name = psz_name;
849 p_stream->p_cfg = p_cfg;
850 p_stream->p_next = p_next;
852 msg_Dbg( p_sout, "stream=`%s'", p_stream->psz_name );
854 vlc_object_attach( p_stream, p_sout );
857 module_need( p_stream, "sout stream", p_stream->psz_name, true );
859 if( !p_stream->p_module )
861 /* those must be freed by the caller if creation failed */
862 p_stream->psz_name = NULL;
863 p_stream->p_cfg = NULL;
865 sout_StreamDelete( p_stream );
872 /* Creates a complete "stream_out" modules chain
874 * chain format: module1{option=*:option=*}[:module2{option=*:...}]
876 * The modules are created starting from the last one and linked together
877 * A pointer to the last module created is stored if pp_last isn't NULL, to
878 * make sure sout_StreamChainDelete doesn't delete modules created in another
881 * Returns a pointer to the first module.
883 sout_stream_t *sout_StreamChainNew(sout_instance_t *p_sout, char *psz_chain,
884 sout_stream_t *p_next, sout_stream_t **pp_last)
886 if(!psz_chain || !*psz_chain)
888 if(pp_last) *pp_last = NULL;
892 char *psz_parser = strdup(psz_chain);
896 vlc_array_t cfg, name;
897 vlc_array_init(&cfg);
898 vlc_array_init(&name);
903 config_chain_t *p_cfg;
905 psz_chain = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
907 psz_parser = psz_chain;
909 vlc_array_append(&cfg, p_cfg);
910 vlc_array_append(&name, psz_name);
913 int i = vlc_array_count(&name);
915 vlc_array_init(&module);
918 p_next = sout_StreamNew( p_sout, vlc_array_item_at_index(&name, i),
919 vlc_array_item_at_index(&cfg, i), p_next);
924 if(i == vlc_array_count(&name) - 1 && pp_last)
925 *pp_last = p_next; /* last module created in the chain */
927 vlc_array_append(&module, p_next);
930 vlc_array_clear(&name);
931 vlc_array_clear(&cfg);
932 vlc_array_clear(&module);
938 i++; /* last module couldn't be created */
940 /* destroy all modules created, starting with the last one */
941 int modules = vlc_array_count(&module);
943 sout_StreamDelete(vlc_array_item_at_index(&module, modules));
944 vlc_array_clear(&module);
946 /* then destroy all names and config which weren't destroyed by
947 * sout_StreamDelete */
950 free(vlc_array_item_at_index(&name, i));
951 config_ChainDestroy(vlc_array_item_at_index(&cfg, i));
953 vlc_array_clear(&name);
954 vlc_array_clear(&cfg);
959 static char *sout_stream_url_to_chain( bool b_sout_display,
960 const char *psz_url )
965 mrl_Parse( &mrl, psz_url );
967 /* Check if the URLs goes to #rtp - otherwise we'll use #standard */
968 static const char rtplist[] = "dccp\0sctp\0tcp\0udplite\0";
969 for (const char *a = rtplist; *a; a += strlen (a) + 1)
970 if (strcmp (a, mrl.psz_access) == 0)
973 if (strcmp (mrl.psz_access, "rtp") == 0)
976 /* For historical reasons, rtp:// means RTP over UDP */
977 strcpy (mrl.psz_access, "udp");
979 if (mrl.psz_name[0] == '[')
981 port = strstr (mrl.psz_name, "]:");
986 port = strchr (mrl.psz_name, ':');
988 *port++ = '\0'; /* erase ':' */
990 if (asprintf (&psz_chain,
991 "rtp{mux=\"%s\",proto=\"%s\",dst=\"%s%s%s\"}",
992 mrl.psz_way, mrl.psz_access, mrl.psz_name,
993 port ? "\",port=\"" : "", port ? port : "") == -1)
998 /* Convert the URL to a basic standard sout chain */
999 if (asprintf (&psz_chain,
1000 "standard{mux=\"%s\",access=\"%s\",dst=\"%s\"}",
1001 mrl.psz_way, mrl.psz_access, mrl.psz_name) == -1)
1005 /* Duplicate and wrap if sout-display is on */
1006 if (psz_chain && b_sout_display)
1009 if (asprintf (&tmp, "duplicate{dst=display,dst=%s}", psz_chain) == -1)
1019 #undef sout_EncoderCreate
1020 encoder_t *sout_EncoderCreate( vlc_object_t *p_this )
1022 static const char type[] = "encoder";
1023 return vlc_custom_create( p_this, sizeof( encoder_t ), VLC_OBJECT_GENERIC,