1 /*****************************************************************************
2 * rtp.c: rtp stream output module
3 *****************************************************************************
4 * Copyright (C) 2003-2004 the VideoLAN team
5 * Copyright © 2007 Rémi Denis-Courmont
8 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
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.
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.
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 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
35 #include <vlc_block.h>
37 #include <vlc_httpd.h>
39 #include <vlc_network.h>
40 #include <vlc_charset.h>
41 #include <vlc_strings.h>
46 # include <sys/types.h>
49 # include <sys/stat.h>
51 #ifdef HAVE_LINUX_DCCP_H
52 # include <linux/dccp.h>
55 # define IPPROTO_DCCP 33
57 #ifndef IPPROTO_UDPLITE
58 # define IPPROTO_UDPLITE 136
63 /*****************************************************************************
65 *****************************************************************************/
67 #define DST_TEXT N_("Destination")
68 #define DST_LONGTEXT N_( \
69 "This is the output URL that will be used." )
70 #define SDP_TEXT N_("SDP")
71 #define SDP_LONGTEXT N_( \
72 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
73 "session will be made available. You must use an url: http://location to " \
74 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
75 "for the SDP to be announced via SAP." )
76 #define MUX_TEXT N_("Muxer")
77 #define MUX_LONGTEXT N_( \
78 "This allows you to specify the muxer used for the streaming output. " \
79 "Default is to use no muxer (standard RTP stream)." )
81 #define NAME_TEXT N_("Session name")
82 #define NAME_LONGTEXT N_( \
83 "This is the name of the session that will be announced in the SDP " \
84 "(Session Descriptor)." )
85 #define DESC_TEXT N_("Session description")
86 #define DESC_LONGTEXT N_( \
87 "This allows you to give a short description with details about the stream, " \
88 "that will be announced in the SDP (Session Descriptor)." )
89 #define URL_TEXT N_("Session URL")
90 #define URL_LONGTEXT N_( \
91 "This allows you to give an URL with more details about the stream " \
92 "(often the website of the streaming organization), that will " \
93 "be announced in the SDP (Session Descriptor)." )
94 #define EMAIL_TEXT N_("Session email")
95 #define EMAIL_LONGTEXT N_( \
96 "This allows you to give a contact mail address for the stream, that will " \
97 "be announced in the SDP (Session Descriptor)." )
98 #define PHONE_TEXT N_("Session phone number")
99 #define PHONE_LONGTEXT N_( \
100 "This allows you to give a contact telephone number for the stream, that will " \
101 "be announced in the SDP (Session Descriptor)." )
103 #define PORT_TEXT N_("Port")
104 #define PORT_LONGTEXT N_( \
105 "This allows you to specify the base port for the RTP streaming." )
106 #define PORT_AUDIO_TEXT N_("Audio port")
107 #define PORT_AUDIO_LONGTEXT N_( \
108 "This allows you to specify the default audio port for the RTP streaming." )
109 #define PORT_VIDEO_TEXT N_("Video port")
110 #define PORT_VIDEO_LONGTEXT N_( \
111 "This allows you to specify the default video port for the RTP streaming." )
113 #define TTL_TEXT N_("Hop limit (TTL)")
114 #define TTL_LONGTEXT N_( \
115 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
116 "the multicast packets sent by the stream output (0 = use operating " \
117 "system built-in default).")
119 #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
120 #define RTCP_MUX_LONGTEXT N_( \
121 "This sends and receives RTCP packet multiplexed over the same port " \
124 #define PROTO_TEXT N_("Transport protocol")
125 #define PROTO_LONGTEXT N_( \
126 "This selects which transport protocol to use for RTP." )
128 static const char *const ppsz_protos[] = {
129 "dccp", "sctp", "tcp", "udp", "udplite",
132 static const char *const ppsz_protocols[] = {
133 "DCCP", "SCTP", "TCP", "UDP", "UDP-Lite",
136 #define RFC3016_TEXT N_("MP4A LATM")
137 #define RFC3016_LONGTEXT N_( \
138 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
140 static int Open ( vlc_object_t * );
141 static void Close( vlc_object_t * );
143 #define SOUT_CFG_PREFIX "sout-rtp-"
144 #define MAX_EMPTY_BLOCKS 200
147 set_shortname( _("RTP"));
148 set_description( _("RTP stream output") );
149 set_capability( "sout stream", 0 );
150 add_shortcut( "rtp" );
151 set_category( CAT_SOUT );
152 set_subcategory( SUBCAT_SOUT_STREAM );
154 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DST_TEXT,
155 DST_LONGTEXT, VLC_TRUE );
157 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
158 SDP_LONGTEXT, VLC_TRUE );
159 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
160 MUX_LONGTEXT, VLC_TRUE );
162 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
163 NAME_LONGTEXT, VLC_TRUE );
164 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
165 DESC_LONGTEXT, VLC_TRUE );
166 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
167 URL_LONGTEXT, VLC_TRUE );
168 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
169 EMAIL_LONGTEXT, VLC_TRUE );
170 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
171 PHONE_LONGTEXT, VLC_TRUE );
173 add_string( SOUT_CFG_PREFIX "proto", "udp", NULL, PROTO_TEXT,
174 PROTO_LONGTEXT, VLC_FALSE );
175 change_string_list( ppsz_protos, ppsz_protocols, NULL );
176 add_integer( SOUT_CFG_PREFIX "port", 1234, NULL, PORT_TEXT,
177 PORT_LONGTEXT, VLC_TRUE );
178 add_integer( SOUT_CFG_PREFIX "port-audio", 1230, NULL, PORT_AUDIO_TEXT,
179 PORT_AUDIO_LONGTEXT, VLC_TRUE );
180 add_integer( SOUT_CFG_PREFIX "port-video", 1232, NULL, PORT_VIDEO_TEXT,
181 PORT_VIDEO_LONGTEXT, VLC_TRUE );
183 add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
184 TTL_LONGTEXT, VLC_TRUE );
185 add_bool( SOUT_CFG_PREFIX "rtcp-mux", VLC_FALSE, NULL,
186 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, VLC_FALSE );
188 add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
189 RFC3016_LONGTEXT, VLC_FALSE );
191 set_callbacks( Open, Close );
194 /*****************************************************************************
195 * Exported prototypes
196 *****************************************************************************/
197 static const char *ppsz_sout_options[] = {
198 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
199 "description", "url", "email", "phone",
204 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
205 static int Del ( sout_stream_t *, sout_stream_id_t * );
206 static int Send( sout_stream_t *, sout_stream_id_t *,
208 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
209 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
210 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
213 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
214 static void ThreadSend( vlc_object_t *p_this );
216 static void SDPHandleUrl( sout_stream_t *, char * );
218 static int SapSetup( sout_stream_t *p_stream );
219 static int FileSetup( sout_stream_t *p_stream );
220 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t * );
222 struct sout_stream_sys_t
226 vlc_mutex_t lock_sdp;
229 vlc_bool_t b_export_sdp_file;
233 vlc_bool_t b_export_sap;
234 session_descriptor_t *p_session;
237 httpd_host_t *p_httpd_host;
238 httpd_file_t *p_httpd_file;
244 char *psz_destination;
248 uint16_t i_port_audio;
249 uint16_t i_port_video;
253 /* when need to use a private one or when using muxer */
256 /* in case we do TS/PS over rtp */
258 sout_access_out_t *p_grab;
264 sout_stream_id_t **es;
267 typedef int (*pf_rtp_packetizer_t)( sout_stream_t *, sout_stream_id_t *,
270 typedef struct rtp_sink_t
276 struct sout_stream_id_t
280 sout_stream_t *p_stream;
283 uint8_t i_payload_type;
295 /* Packetizer specific fields */
296 pf_rtp_packetizer_t pf_packetize;
300 vlc_mutex_t lock_sink;
303 rtsp_stream_id_t *rtsp_id;
306 block_fifo_t *p_fifo;
310 /*****************************************************************************
312 *****************************************************************************/
313 static int Open( vlc_object_t *p_this )
315 sout_stream_t *p_stream = (sout_stream_t*)p_this;
316 sout_instance_t *p_sout = p_stream->p_sout;
317 sout_stream_sys_t *p_sys = NULL;
318 config_chain_t *p_cfg = NULL;
320 vlc_bool_t b_rtsp = VLC_FALSE;
322 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
323 ppsz_sout_options, p_stream->p_cfg );
325 p_sys = malloc( sizeof( sout_stream_sys_t ) );
329 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
331 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
332 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
333 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
334 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
336 p_sys->psz_sdp_file = NULL;
338 if( p_sys->i_port_audio == p_sys->i_port_video )
340 msg_Err( p_stream, "audio and video port cannot be the same" );
341 p_sys->i_port_audio = 0;
342 p_sys->i_port_video = 0;
345 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
347 if( !strcmp( p_cfg->psz_name, "sdp" )
348 && ( p_cfg->psz_value != NULL )
349 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
357 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
360 if( !strncasecmp( psz, "rtsp:", 5 ) )
366 /* Transport protocol */
367 p_sys->proto = IPPROTO_UDP;
368 psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
370 if ((psz == NULL) || !strcasecmp (psz, "udp"))
371 (void)0; /* default */
373 if (!strcasecmp (psz, "dccp"))
375 p_sys->proto = IPPROTO_DCCP;
376 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
380 if (!strcasecmp (psz, "sctp"))
382 p_sys->proto = IPPROTO_TCP;
383 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
388 if (!strcasecmp (psz, "tcp"))
390 p_sys->proto = IPPROTO_TCP;
391 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
395 if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
396 p_sys->proto = IPPROTO_UDPLITE;
398 msg_Warn (p_this, "unknown or unsupported transport protocol \"%s\"",
402 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
404 msg_Err( p_stream, "missing destination and not in RTSP mode" );
409 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
410 if( p_sys->i_ttl == 0 )
412 /* Normally, we should let the default hop limit up to the core,
413 * but we have to know it to build our SDP properly, which is why
414 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
416 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
419 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
421 p_sys->i_payload_type = 96;
425 p_sys->psz_sdp = NULL;
427 p_sys->b_export_sap = VLC_FALSE;
428 p_sys->b_export_sdp_file = VLC_FALSE;
429 p_sys->p_session = NULL;
431 p_sys->p_httpd_host = NULL;
432 p_sys->p_httpd_file = NULL;
434 p_stream->p_sys = p_sys;
436 vlc_mutex_init( p_stream, &p_sys->lock_sdp );
437 vlc_mutex_init( p_stream, &p_sys->lock_es );
439 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
442 sout_stream_id_t *id;
444 /* Check muxer type */
445 if( strncasecmp( psz, "ps", 2 )
446 && strncasecmp( psz, "mpeg1", 5 )
447 && strncasecmp( psz, "ts", 2 ) )
449 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
451 vlc_mutex_destroy( &p_sys->lock_sdp );
452 vlc_mutex_destroy( &p_sys->lock_es );
457 p_sys->p_grab = GrabberCreate( p_stream );
458 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
461 if( p_sys->p_mux == NULL )
463 msg_Err( p_stream, "cannot create muxer" );
464 sout_AccessOutDelete( p_sys->p_grab );
465 vlc_mutex_destroy( &p_sys->lock_sdp );
466 vlc_mutex_destroy( &p_sys->lock_es );
471 id = Add( p_stream, NULL );
474 sout_MuxDelete( p_sys->p_mux );
475 sout_AccessOutDelete( p_sys->p_grab );
476 vlc_mutex_destroy( &p_sys->lock_sdp );
477 vlc_mutex_destroy( &p_sys->lock_es );
482 p_sys->packet = NULL;
484 p_stream->pf_add = MuxAdd;
485 p_stream->pf_del = MuxDel;
486 p_stream->pf_send = MuxSend;
491 p_sys->p_grab = NULL;
493 p_stream->pf_add = Add;
494 p_stream->pf_del = Del;
495 p_stream->pf_send = Send;
498 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
501 config_chain_t *p_cfg;
503 SDPHandleUrl( p_stream, psz );
505 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
507 if( !strcmp( p_cfg->psz_name, "sdp" ) )
509 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
512 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
513 if( !strcmp( p_cfg->psz_value, psz ) )
516 SDPHandleUrl( p_stream, p_cfg->psz_value );
522 /* update p_sout->i_out_pace_nocontrol */
523 p_stream->p_sout->i_out_pace_nocontrol++;
528 /*****************************************************************************
530 *****************************************************************************/
531 static void Close( vlc_object_t * p_this )
533 sout_stream_t *p_stream = (sout_stream_t*)p_this;
534 sout_stream_sys_t *p_sys = p_stream->p_sys;
536 /* update p_sout->i_out_pace_nocontrol */
537 p_stream->p_sout->i_out_pace_nocontrol--;
541 assert( p_sys->i_es == 1 );
542 Del( p_stream, p_sys->es[0] );
544 sout_MuxDelete( p_sys->p_mux );
545 sout_AccessOutDelete( p_sys->p_grab );
548 block_Release( p_sys->packet );
550 if( p_sys->b_export_sap )
553 SapSetup( p_stream );
557 if( p_sys->rtsp != NULL )
558 RtspUnsetup( p_sys->rtsp );
560 vlc_mutex_destroy( &p_sys->lock_sdp );
561 vlc_mutex_destroy( &p_sys->lock_es );
563 if( p_sys->p_httpd_file )
564 httpd_FileDelete( p_sys->p_httpd_file );
566 if( p_sys->p_httpd_host )
567 httpd_HostDelete( p_sys->p_httpd_host );
569 free( p_sys->psz_sdp );
571 if( p_sys->b_export_sdp_file )
574 unlink( p_sys->psz_sdp_file );
576 free( p_sys->psz_sdp_file );
578 free( p_sys->psz_destination );
582 /*****************************************************************************
584 *****************************************************************************/
585 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
587 sout_stream_sys_t *p_sys = p_stream->p_sys;
590 vlc_UrlParse( &url, psz_url, 0 );
591 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
593 if( p_sys->p_httpd_file )
595 msg_Err( p_stream, "you can use sdp=http:// only once" );
599 if( HttpSetup( p_stream, &url ) )
601 msg_Err( p_stream, "cannot export SDP as HTTP" );
604 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
606 if( p_sys->rtsp != NULL )
608 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
612 /* FIXME test if destination is multicast or no destination at all */
613 p_sys->rtsp = RtspSetup( p_stream, &url );
614 if( p_sys->rtsp == NULL )
616 msg_Err( p_stream, "cannot export SDP as RTSP" );
619 if( p_sys->p_mux != NULL )
621 sout_stream_id_t *id = p_sys->es[0];
622 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0, GetDWBE( id->ssrc ),
623 p_sys->psz_destination, p_sys->i_ttl,
624 id->i_port, id->i_port + 1 );
627 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
628 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
630 p_sys->b_export_sap = VLC_TRUE;
631 SapSetup( p_stream );
633 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
635 if( p_sys->b_export_sdp_file )
637 msg_Err( p_stream, "you can use sdp=file:// only once" );
640 p_sys->b_export_sdp_file = VLC_TRUE;
641 psz_url = &psz_url[5];
642 if( psz_url[0] == '/' && psz_url[1] == '/' )
644 p_sys->psz_sdp_file = strdup( psz_url );
648 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
653 vlc_UrlClean( &url );
656 /*****************************************************************************
658 *****************************************************************************/
660 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
662 const sout_stream_sys_t *p_sys = p_stream->p_sys;
664 struct sockaddr_storage dst;
668 * When we have a fixed destination (typically when we do multicast),
669 * we need to put the actual port numbers in the SDP.
670 * When there is no fixed destination, we only support RTSP unicast
671 * on-demand setup, so we should rather let the clients decide which ports
673 * When there is both a fixed destination and RTSP unicast, we need to
674 * put port numbers used by the fixed destination, otherwise the SDP would
675 * become totally incorrect for multicast use. It should be noted that
676 * port numbers from SDP with RTSP are only "recommendation" from the
677 * server to the clients (per RFC2326), so only broken clients will fail
678 * to handle this properly. There is no solution but to use two differents
679 * output chain with two different RTSP URLs if you need to handle this
684 if( p_sys->psz_destination != NULL )
688 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
689 dstlen = sizeof( dst );
690 if( p_sys->es[0]->listen_fd != NULL )
691 getsockname( p_sys->es[0]->listen_fd[0],
692 (struct sockaddr *)&dst, &dstlen );
694 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
695 (struct sockaddr *)&dst, &dstlen );
701 /* Dummy destination address for RTSP */
702 memset (&dst, 0, sizeof( struct sockaddr_in ) );
703 dst.ss_family = AF_INET;
707 dstlen = sizeof( struct sockaddr_in );
710 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
711 NULL, 0, (struct sockaddr *)&dst, dstlen );
712 if( psz_sdp == NULL )
715 /* TODO: a=source-filter */
716 if( p_sys->rtcp_mux )
717 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
719 if( rtsp_url != NULL )
720 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
722 /* FIXME: locking?! */
723 for( i = 0; i < p_sys->i_es; i++ )
725 sout_stream_id_t *id = p_sys->es[i];
726 const char *mime_major; /* major MIME type */
727 const char *proto = "RTP/AVP"; /* protocol */
732 mime_major = "video";
735 mime_major = "audio";
744 if( rtsp_url == NULL )
746 switch( p_sys->proto )
751 proto = "TCP/RTP/AVP";
754 proto = "DCCP/RTP/AVP";
756 case IPPROTO_UDPLITE:
761 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
762 id->i_payload_type, VLC_FALSE, id->i_bitrate,
763 id->psz_enc, id->i_clock_rate, id->i_channels,
766 if( rtsp_url != NULL )
768 assert( strlen( rtsp_url ) > 0 );
769 vlc_bool_t addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
770 sdp_AddAttribute ( &psz_sdp, "control",
771 addslash ? "%s/trackID=%u" : "%strackID=%u",
776 if( id->listen_fd != NULL )
777 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
779 if( p_sys->proto == IPPROTO_DCCP )
780 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
781 "SC:RTP%c", toupper( mime_major[0] ) );
789 /*****************************************************************************
791 *****************************************************************************/
793 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
795 static const char hex[16] = "0123456789abcdef";
798 for( i = 0; i < i_data; i++ )
800 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
801 s[2*i+1] = hex[(p_data[i] )&0xf];
807 /** Add an ES as a new RTP stream */
808 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
810 /* NOTE: As a special case, if we use a non-RTP
811 * mux (TS/PS), then p_fmt is NULL. */
812 sout_stream_sys_t *p_sys = p_stream->p_sys;
813 sout_stream_id_t *id;
814 int i_port, cscov = -1;
817 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
820 vlc_object_attach( id, p_stream );
822 /* Choose the port */
827 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
829 i_port = p_sys->i_port_audio;
830 p_sys->i_port_audio = 0;
833 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
835 i_port = p_sys->i_port_video;
836 p_sys->i_port_video = 0;
841 if( p_sys->i_port != p_sys->i_port_audio
842 && p_sys->i_port != p_sys->i_port_video )
844 i_port = p_sys->i_port;
851 id->p_stream = p_stream;
853 id->i_sequence = rand()&0xffff;
854 id->i_payload_type = p_sys->i_payload_type;
855 id->ssrc[0] = rand()&0xff;
856 id->ssrc[1] = rand()&0xff;
857 id->ssrc[2] = rand()&0xff;
858 id->ssrc[3] = rand()&0xff;
862 id->i_clock_rate = 90000; /* most common case for video */
867 id->i_cat = p_fmt->i_cat;
868 if( p_fmt->i_cat == AUDIO_ES )
870 id->i_clock_rate = p_fmt->audio.i_rate;
871 id->i_channels = p_fmt->audio.i_channels;
873 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
877 id->i_cat = VIDEO_ES;
881 id->pf_packetize = NULL;
882 id->i_mtu = config_GetInt( p_stream, "mtu" );
883 if( id->i_mtu <= 12 + 16 )
884 id->i_mtu = 576 - 20 - 8; /* pessimistic */
886 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
888 vlc_mutex_init( p_stream, &id->lock_sink );
893 id->listen_fd = NULL;
896 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
898 if( p_sys->psz_destination != NULL )
899 switch( p_sys->proto )
903 id->listen_fd = net_Listen( VLC_OBJECT(p_stream),
904 p_sys->psz_destination, i_port,
906 if( id->listen_fd == NULL )
908 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
915 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
916 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
917 i_port, ttl, p_sys->proto );
920 msg_Err( p_stream, "cannot create RTP socket" );
923 rtp_add_sink( id, fd, p_sys->rtcp_mux );
929 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
931 if( psz == NULL ) /* Uho! */
934 if( strncmp( psz, "ts", 2 ) == 0 )
936 id->i_payload_type = 33;
937 id->psz_enc = "MP2T";
941 id->psz_enc = "MP2P";
945 switch( p_fmt->i_codec )
947 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
948 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
949 id->i_payload_type = 0;
950 id->psz_enc = "PCMU";
951 id->pf_packetize = rtp_packetize_l8;
953 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
954 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
955 id->i_payload_type = 8;
956 id->psz_enc = "PCMA";
957 id->pf_packetize = rtp_packetize_l8;
959 case VLC_FOURCC( 's', '1', '6', 'b' ):
960 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
962 id->i_payload_type = 11;
964 else if( p_fmt->audio.i_channels == 2 &&
965 p_fmt->audio.i_rate == 44100 )
967 id->i_payload_type = 10;
970 id->pf_packetize = rtp_packetize_l16;
972 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
974 id->pf_packetize = rtp_packetize_l8;
976 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
977 case VLC_FOURCC( 'm', 'p', '3', ' ' ):
978 id->i_payload_type = 14;
980 id->pf_packetize = rtp_packetize_mpa;
982 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
983 id->i_payload_type = 32;
985 id->pf_packetize = rtp_packetize_mpv;
987 case VLC_FOURCC( 'a', '5', '2', ' ' ):
989 id->pf_packetize = rtp_packetize_ac3;
991 case VLC_FOURCC( 'H', '2', '6', '3' ):
992 id->psz_enc = "H263-1998";
993 id->pf_packetize = rtp_packetize_h263;
995 case VLC_FOURCC( 'h', '2', '6', '4' ):
996 id->psz_enc = "H264";
997 id->pf_packetize = rtp_packetize_h264;
1000 if( p_fmt->i_extra > 0 )
1002 uint8_t *p_buffer = p_fmt->p_extra;
1003 int i_buffer = p_fmt->i_extra;
1004 char *p_64_sps = NULL;
1005 char *p_64_pps = NULL;
1008 while( i_buffer > 4 &&
1009 p_buffer[0] == 0 && p_buffer[1] == 0 &&
1010 p_buffer[2] == 0 && p_buffer[3] == 1 )
1012 const int i_nal_type = p_buffer[4]&0x1f;
1016 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1019 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1021 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1023 /* we found another startcode */
1028 if( i_nal_type == 7 )
1030 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1031 sprintf_hexa( hexa, &p_buffer[5], 3 );
1033 else if( i_nal_type == 8 )
1035 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1041 if( p_64_sps && p_64_pps &&
1042 ( asprintf( &id->psz_fmtp,
1043 "packetization-mode=1;profile-level-id=%s;"
1044 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1045 p_64_pps ) == -1 ) )
1046 id->psz_fmtp = NULL;
1051 id->psz_fmtp = strdup( "packetization-mode=1" );
1054 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1056 char hexa[2*p_fmt->i_extra +1];
1058 id->psz_enc = "MP4V-ES";
1059 id->pf_packetize = rtp_packetize_split;
1060 if( p_fmt->i_extra > 0 )
1062 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1063 if( asprintf( &id->psz_fmtp,
1064 "profile-level-id=3; config=%s;", hexa ) == -1 )
1065 id->psz_fmtp = NULL;
1069 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1073 char hexa[2*p_fmt->i_extra +1];
1075 id->psz_enc = "mpeg4-generic";
1076 id->pf_packetize = rtp_packetize_mp4a;
1077 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1078 if( asprintf( &id->psz_fmtp,
1079 "streamtype=5; profile-level-id=15; "
1080 "mode=AAC-hbr; config=%s; SizeLength=13; "
1081 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1083 id->psz_fmtp = NULL;
1089 unsigned char config[6];
1090 unsigned int aacsrates[15] = {
1091 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1092 16000, 12000, 11025, 8000, 7350, 0, 0 };
1094 for( i = 0; i < 15; i++ )
1095 if( p_fmt->audio.i_rate == aacsrates[i] )
1101 config[3]=p_fmt->audio.i_channels<<4;
1105 id->psz_enc = "MP4A-LATM";
1106 id->pf_packetize = rtp_packetize_mp4a_latm;
1107 sprintf_hexa( hexa, config, 6 );
1108 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1109 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1110 id->psz_fmtp = NULL;
1114 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1115 id->psz_enc = "AMR";
1116 id->psz_fmtp = strdup( "octet-align=1" );
1117 id->pf_packetize = rtp_packetize_amr;
1119 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1120 id->psz_enc = "AMR-WB";
1121 id->psz_fmtp = strdup( "octet-align=1" );
1122 id->pf_packetize = rtp_packetize_amr;
1124 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
1125 id->i_payload_type = p_sys->i_payload_type++;
1126 id->psz_enc = "SPEEX";
1127 id->pf_packetize = rtp_packetize_spx;
1129 case VLC_FOURCC( 't', '1', '4', '0' ):
1130 id->psz_enc = "t140" ;
1131 id->i_clock_rate = 1000;
1132 id->pf_packetize = rtp_packetize_t140;
1136 msg_Err( p_stream, "cannot add this stream (unsupported "
1137 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1142 cscov += 8 /* UDP */ + 12 /* RTP */;
1144 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1146 if( id->i_payload_type == p_sys->i_payload_type )
1147 p_sys->i_payload_type++;
1149 if( p_sys->rtsp != NULL )
1150 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1151 GetDWBE( id->ssrc ),
1152 p_sys->psz_destination,
1153 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1155 id->p_fifo = block_FifoNew( p_stream );
1156 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1157 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
1160 /* Update p_sys context */
1161 vlc_mutex_lock( &p_sys->lock_es );
1162 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1163 vlc_mutex_unlock( &p_sys->lock_es );
1165 psz_sdp = SDPGenerate( p_stream, NULL );
1167 vlc_mutex_lock( &p_sys->lock_sdp );
1168 free( p_sys->psz_sdp );
1169 p_sys->psz_sdp = psz_sdp;
1170 vlc_mutex_unlock( &p_sys->lock_sdp );
1172 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1174 /* Update SDP (sap/file) */
1175 if( p_sys->b_export_sap ) SapSetup( p_stream );
1176 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1181 Del( p_stream, id );
1185 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1187 sout_stream_sys_t *p_sys = p_stream->p_sys;
1189 if( id->p_fifo != NULL )
1191 vlc_object_kill( id );
1192 block_FifoWake( id->p_fifo );
1193 vlc_thread_join( id );
1194 block_FifoRelease( id->p_fifo );
1197 vlc_mutex_lock( &p_sys->lock_es );
1198 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1199 vlc_mutex_unlock( &p_sys->lock_es );
1202 if( id->i_port > 0 )
1204 if( id->i_cat == AUDIO_ES && p_sys->i_port_audio == 0 )
1205 p_sys->i_port_audio = id->i_port;
1206 else if( id->i_cat == VIDEO_ES && p_sys->i_port_video == 0 )
1207 p_sys->i_port_video = id->i_port;
1210 free( id->psz_fmtp );
1213 RtspDelId( p_sys->rtsp, id->rtsp_id );
1215 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1216 if( id->listen_fd != NULL )
1217 net_ListenClose( id->listen_fd );
1219 vlc_mutex_destroy( &id->lock_sink );
1221 /* Update SDP (sap/file) */
1222 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1223 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1225 vlc_object_detach( id );
1226 vlc_object_release( id );
1230 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1235 assert( p_stream->p_sys->p_mux == NULL );
1237 while( p_buffer != NULL )
1239 p_next = p_buffer->p_next;
1240 if( id->pf_packetize( p_stream, id, p_buffer ) )
1243 block_Release( p_buffer );
1249 /****************************************************************************
1251 ****************************************************************************/
1252 static int SapSetup( sout_stream_t *p_stream )
1254 sout_stream_sys_t *p_sys = p_stream->p_sys;
1255 sout_instance_t *p_sout = p_stream->p_sout;
1257 /* Remove the previous session */
1258 if( p_sys->p_session != NULL)
1260 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1261 p_sys->p_session = NULL;
1264 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1266 announce_method_t *p_method = sout_SAPMethod();
1267 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1269 p_sys->psz_destination,
1271 sout_MethodRelease( p_method );
1277 /****************************************************************************
1279 ****************************************************************************/
1280 static int FileSetup( sout_stream_t *p_stream )
1282 sout_stream_sys_t *p_sys = p_stream->p_sys;
1285 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1287 msg_Err( p_stream, "cannot open file '%s' (%m)",
1288 p_sys->psz_sdp_file );
1289 return VLC_EGENERIC;
1292 fputs( p_sys->psz_sdp, f );
1298 /****************************************************************************
1300 ****************************************************************************/
1301 static int HttpCallback( httpd_file_sys_t *p_args,
1302 httpd_file_t *, uint8_t *p_request,
1303 uint8_t **pp_data, int *pi_data );
1305 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t *url)
1307 sout_stream_sys_t *p_sys = p_stream->p_sys;
1309 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1310 url->i_port > 0 ? url->i_port : 80 );
1311 if( p_sys->p_httpd_host )
1313 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1314 url->psz_path ? url->psz_path : "/",
1317 HttpCallback, (void*)p_sys );
1319 if( p_sys->p_httpd_file == NULL )
1321 return VLC_EGENERIC;
1326 static int HttpCallback( httpd_file_sys_t *p_args,
1327 httpd_file_t *f, uint8_t *p_request,
1328 uint8_t **pp_data, int *pi_data )
1330 VLC_UNUSED(f); VLC_UNUSED(p_request);
1331 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1333 vlc_mutex_lock( &p_sys->lock_sdp );
1334 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1336 *pi_data = strlen( p_sys->psz_sdp );
1337 *pp_data = malloc( *pi_data );
1338 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1345 vlc_mutex_unlock( &p_sys->lock_sdp );
1350 /****************************************************************************
1352 ****************************************************************************/
1353 static void ThreadSend( vlc_object_t *p_this )
1355 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1356 unsigned i_caching = id->i_caching;
1358 int fd[5] = { -1, -1, -1, -1, -1 };
1366 fd[4] = open( "/dev/null", O_WRONLY );
1371 block_t *out = block_FifoGet( id->p_fifo );
1373 continue; /* Forced wakeup */
1375 mtime_t i_date = out->i_dts + i_caching;
1376 ssize_t len = out->i_buffer;
1380 len = write( fd[1], out->p_buffer, len);
1382 continue; /* Uho - should not happen */
1386 vlc_mutex_lock( &id->lock_sink );
1387 unsigned deadc = 0; /* How many dead sockets? */
1388 int deadv[id->sinkc]; /* Dead sockets list */
1390 for( int i = 0; i < id->sinkc; i++ )
1392 SendRTCP( id->sinkv[i].rtcp, out );
1395 tee( fd[0], fd[3], len, 0 );
1396 if( splice( fd[2], NULL, id->sinkv[i].rtp_fd, NULL, len,
1397 SPLICE_F_NONBLOCK ) >= 0 )
1399 if( errno == EAGAIN )
1403 splice( fd[2], NULL, fd[4], NULL, len, 0 );
1405 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1408 /* Retry sending to root out soft-errors */
1409 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1412 deadv[deadc++] = id->sinkv[i].rtp_fd;
1414 vlc_mutex_unlock( &id->lock_sink );
1416 block_Release( out );
1418 splice( fd[0], NULL, fd[4], NULL, len, 0 );
1421 for( unsigned i = 0; i < deadc; i++ )
1423 msg_Dbg( id, "removing socket %d", deadv[i] );
1424 rtp_del_sink( id, deadv[i] );
1427 /* Hopefully we won't overflow the SO_MAXCONN accept queue */
1428 while( id->listen_fd != NULL )
1430 int fd = net_Accept( id, id->listen_fd, 0 );
1433 msg_Dbg( id, "adding socket %d", fd );
1434 rtp_add_sink( id, fd, VLC_TRUE );
1439 for( unsigned i = 0; i < 5; i++ )
1444 int rtp_add_sink( sout_stream_id_t *id, int fd, vlc_bool_t rtcp_mux )
1446 rtp_sink_t sink = { fd, NULL };
1447 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1449 if( sink.rtcp == NULL )
1450 msg_Err( id, "RTCP failed!" );
1452 vlc_mutex_lock( &id->lock_sink );
1453 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1454 vlc_mutex_unlock( &id->lock_sink );
1458 void rtp_del_sink( sout_stream_id_t *id, int fd )
1460 rtp_sink_t sink = { fd, NULL };
1462 /* NOTE: must be safe to use if fd is not included */
1463 vlc_mutex_lock( &id->lock_sink );
1464 for( int i = 0; i < id->sinkc; i++ )
1466 if (id->sinkv[i].rtp_fd == fd)
1468 sink = id->sinkv[i];
1469 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1473 vlc_mutex_unlock( &id->lock_sink );
1475 CloseRTCP( sink.rtcp );
1476 net_Close( sink.rtp_fd );
1479 uint16_t rtp_get_seq( const sout_stream_id_t *id )
1481 /* This will return values for the next packet.
1482 * Accounting for caching would not be totally trivial. */
1483 return id->i_sequence;
1486 /* FIXME: this is pretty bad - if we remove and then insert an ES
1487 * the number will get unsynched from inside RTSP */
1488 unsigned rtp_get_num( const sout_stream_id_t *id )
1490 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1493 vlc_mutex_lock( &p_sys->lock_es );
1494 for( i = 0; i < p_sys->i_es; i++ )
1496 if( id == p_sys->es[i] )
1499 vlc_mutex_unlock( &p_sys->lock_es );
1505 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1506 int b_marker, int64_t i_pts )
1508 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / I64C(1000000);
1510 out->p_buffer[0] = 0x80;
1511 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1512 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1513 out->p_buffer[3] = ( id->i_sequence )&0xff;
1514 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1515 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1516 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1517 out->p_buffer[7] = ( i_timestamp )&0xff;
1519 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1525 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1527 block_FifoPut( id->p_fifo, out );
1531 * @return configured max RTP payload size (including payload type-specific
1532 * headers, excluding RTP and transport headers)
1534 size_t rtp_mtu (const sout_stream_id_t *id)
1536 return id->i_mtu - 12;
1540 * @return number of audio samples to include for a given packetization time
1541 * (this really only makes sense for audio formats).
1543 size_t rtp_plen (const sout_stream_id_t * id, unsigned ptime_ms)
1545 return id->i_channels * (((id->i_clock_rate - 1) * ptime_ms / 1000) + 1);
1549 /*****************************************************************************
1551 *****************************************************************************/
1553 /** Add an ES to a non-RTP muxed stream */
1554 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1556 sout_input_t *p_input;
1557 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1558 assert( p_mux != NULL );
1560 p_input = sout_MuxAddStream( p_mux, p_fmt );
1561 if( p_input == NULL )
1563 msg_Err( p_stream, "cannot add this stream to the muxer" );
1567 return (sout_stream_id_t *)p_input;
1571 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1574 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1575 assert( p_mux != NULL );
1577 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1582 /** Remove an ES from a non-RTP muxed stream */
1583 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1585 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1586 assert( p_mux != NULL );
1588 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1593 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1594 const block_t *p_buffer )
1596 sout_stream_sys_t *p_sys = p_stream->p_sys;
1597 sout_stream_id_t *id = p_sys->es[0];
1599 int64_t i_dts = p_buffer->i_dts;
1601 uint8_t *p_data = p_buffer->p_buffer;
1602 unsigned int i_data = p_buffer->i_buffer;
1603 unsigned int i_max = id->i_mtu - 12;
1605 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1609 unsigned int i_size;
1611 /* output complete packet */
1612 if( p_sys->packet &&
1613 p_sys->packet->i_buffer + i_data > i_max )
1615 rtp_packetize_send( id, p_sys->packet );
1616 p_sys->packet = NULL;
1619 if( p_sys->packet == NULL )
1621 /* allocate a new packet */
1622 p_sys->packet = block_New( p_stream, id->i_mtu );
1623 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1624 p_sys->packet->i_dts = i_dts;
1625 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1626 i_dts += p_sys->packet->i_length;
1629 i_size = __MIN( i_data,
1630 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1632 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1635 p_sys->packet->i_buffer += i_size;
1644 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
1647 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1653 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1655 p_next = p_buffer->p_next;
1656 block_Release( p_buffer );
1664 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1666 sout_access_out_t *p_grab;
1668 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1669 if( p_grab == NULL )
1672 p_grab->p_module = NULL;
1673 p_grab->p_sout = p_stream->p_sout;
1674 p_grab->psz_access = strdup( "grab" );
1675 p_grab->p_cfg = NULL;
1676 p_grab->psz_path = strdup( "" );
1677 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1678 p_grab->pf_seek = NULL;
1679 p_grab->pf_write = AccessOutGrabberWrite;