1 /*****************************************************************************
2 * rtp.c: rtp stream output module
3 *****************************************************************************
4 * Copyright (C) 2003-2004 the VideoLAN team
5 * Copyright © 2007-2008 Rémi Denis-Courmont
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
35 #include <vlc_block.h>
37 #include <vlc_httpd.h>
39 #include <vlc_network.h>
41 #include <vlc_strings.h>
50 # include <sys/types.h>
53 #ifdef HAVE_ARPA_INET_H
54 # include <arpa/inet.h>
56 #ifdef HAVE_LINUX_DCCP_H
57 # include <linux/dccp.h>
60 # define IPPROTO_DCCP 33
62 #ifndef IPPROTO_UDPLITE
63 # define IPPROTO_UDPLITE 136
70 /*****************************************************************************
72 *****************************************************************************/
74 #define DEST_TEXT N_("Destination")
75 #define DEST_LONGTEXT N_( \
76 "This is the output URL that will be used." )
77 #define SDP_TEXT N_("SDP")
78 #define SDP_LONGTEXT N_( \
79 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
80 "session will be made available. You must use an url: http://location to " \
81 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
82 "for the SDP to be announced via SAP." )
83 #define SAP_TEXT N_("SAP announcing")
84 #define SAP_LONGTEXT N_("Announce this session with SAP.")
85 #define MUX_TEXT N_("Muxer")
86 #define MUX_LONGTEXT N_( \
87 "This allows you to specify the muxer used for the streaming output. " \
88 "Default is to use no muxer (standard RTP stream)." )
90 #define NAME_TEXT N_("Session name")
91 #define NAME_LONGTEXT N_( \
92 "This is the name of the session that will be announced in the SDP " \
93 "(Session Descriptor)." )
94 #define DESC_TEXT N_("Session description")
95 #define DESC_LONGTEXT N_( \
96 "This allows you to give a short description with details about the stream, " \
97 "that will be announced in the SDP (Session Descriptor)." )
98 #define URL_TEXT N_("Session URL")
99 #define URL_LONGTEXT N_( \
100 "This allows you to give an URL with more details about the stream " \
101 "(often the website of the streaming organization), that will " \
102 "be announced in the SDP (Session Descriptor)." )
103 #define EMAIL_TEXT N_("Session email")
104 #define EMAIL_LONGTEXT N_( \
105 "This allows you to give a contact mail address for the stream, that will " \
106 "be announced in the SDP (Session Descriptor)." )
107 #define PHONE_TEXT N_("Session phone number")
108 #define PHONE_LONGTEXT N_( \
109 "This allows you to give a contact telephone number for the stream, that will " \
110 "be announced in the SDP (Session Descriptor)." )
112 #define PORT_TEXT N_("Port")
113 #define PORT_LONGTEXT N_( \
114 "This allows you to specify the base port for the RTP streaming." )
115 #define PORT_AUDIO_TEXT N_("Audio port")
116 #define PORT_AUDIO_LONGTEXT N_( \
117 "This allows you to specify the default audio port for the RTP streaming." )
118 #define PORT_VIDEO_TEXT N_("Video port")
119 #define PORT_VIDEO_LONGTEXT N_( \
120 "This allows you to specify the default video port for the RTP streaming." )
122 #define TTL_TEXT N_("Hop limit (TTL)")
123 #define TTL_LONGTEXT N_( \
124 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
125 "the multicast packets sent by the stream output (-1 = use operating " \
126 "system built-in default).")
128 #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
129 #define RTCP_MUX_LONGTEXT N_( \
130 "This sends and receives RTCP packet multiplexed over the same port " \
133 #define CACHING_TEXT N_("Caching value (ms)")
134 #define CACHING_LONGTEXT N_( \
135 "Default caching value for outbound RTP streams. This " \
136 "value should be set in milliseconds." )
138 #define PROTO_TEXT N_("Transport protocol")
139 #define PROTO_LONGTEXT N_( \
140 "This selects which transport protocol to use for RTP." )
142 #define SRTP_KEY_TEXT N_("SRTP key (hexadecimal)")
143 #define SRTP_KEY_LONGTEXT N_( \
144 "RTP packets will be integrity-protected and ciphered "\
145 "with this Secure RTP master shared secret key.")
147 #define SRTP_SALT_TEXT N_("SRTP salt (hexadecimal)")
148 #define SRTP_SALT_LONGTEXT N_( \
149 "Secure RTP requires a (non-secret) master salt value.")
151 static const char *const ppsz_protos[] = {
152 "dccp", "sctp", "tcp", "udp", "udplite",
155 static const char *const ppsz_protocols[] = {
156 "DCCP", "SCTP", "TCP", "UDP", "UDP-Lite",
159 #define RFC3016_TEXT N_("MP4A LATM")
160 #define RFC3016_LONGTEXT N_( \
161 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
163 static int Open ( vlc_object_t * );
164 static void Close( vlc_object_t * );
166 #define SOUT_CFG_PREFIX "sout-rtp-"
167 #define MAX_EMPTY_BLOCKS 200
170 set_shortname( N_("RTP"))
171 set_description( N_("RTP stream output") )
172 set_capability( "sout stream", 0 )
173 add_shortcut( "rtp" )
174 set_category( CAT_SOUT )
175 set_subcategory( SUBCAT_SOUT_STREAM )
177 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
178 DEST_LONGTEXT, true )
179 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
181 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
183 add_bool( SOUT_CFG_PREFIX "sap", false, NULL, SAP_TEXT, SAP_LONGTEXT,
186 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
187 NAME_LONGTEXT, true )
188 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
189 DESC_LONGTEXT, true )
190 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
192 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
193 EMAIL_LONGTEXT, true )
194 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
195 PHONE_LONGTEXT, true )
197 add_string( SOUT_CFG_PREFIX "proto", "udp", NULL, PROTO_TEXT,
198 PROTO_LONGTEXT, false )
199 change_string_list( ppsz_protos, ppsz_protocols, NULL )
200 add_integer( SOUT_CFG_PREFIX "port", 5004, NULL, PORT_TEXT,
201 PORT_LONGTEXT, true )
202 add_integer( SOUT_CFG_PREFIX "port-audio", 0, NULL, PORT_AUDIO_TEXT,
203 PORT_AUDIO_LONGTEXT, true )
204 add_integer( SOUT_CFG_PREFIX "port-video", 0, NULL, PORT_VIDEO_TEXT,
205 PORT_VIDEO_LONGTEXT, true )
207 add_integer( SOUT_CFG_PREFIX "ttl", -1, NULL, TTL_TEXT,
209 add_bool( SOUT_CFG_PREFIX "rtcp-mux", false, NULL,
210 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, false )
211 add_integer( SOUT_CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL,
212 CACHING_TEXT, CACHING_LONGTEXT, true )
215 add_string( SOUT_CFG_PREFIX "key", "", NULL,
216 SRTP_KEY_TEXT, SRTP_KEY_LONGTEXT, false )
217 add_string( SOUT_CFG_PREFIX "salt", "", NULL,
218 SRTP_SALT_TEXT, SRTP_SALT_LONGTEXT, false )
221 add_bool( SOUT_CFG_PREFIX "mp4a-latm", false, NULL, RFC3016_TEXT,
222 RFC3016_LONGTEXT, false )
224 set_callbacks( Open, Close )
227 /*****************************************************************************
228 * Exported prototypes
229 *****************************************************************************/
230 static const char *const ppsz_sout_options[] = {
231 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
232 "sap", "description", "url", "email", "phone",
233 "proto", "rtcp-mux", "caching", "key", "salt",
237 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
238 static int Del ( sout_stream_t *, sout_stream_id_t * );
239 static int Send( sout_stream_t *, sout_stream_id_t *,
241 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
242 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
243 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
246 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
247 static void* ThreadSend( void * );
248 static void *rtp_listen_thread( void * );
250 static void SDPHandleUrl( sout_stream_t *, const char * );
252 static int SapSetup( sout_stream_t *p_stream );
253 static int FileSetup( sout_stream_t *p_stream );
254 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t * );
256 struct sout_stream_sys_t
260 vlc_mutex_t lock_sdp;
267 session_descriptor_t *p_session;
270 httpd_host_t *p_httpd_host;
271 httpd_file_t *p_httpd_file;
276 /* RTSP NPT and timestamp computations */
277 mtime_t i_npt_zero; /* when NPT=0 packet is sent */
278 int64_t i_pts_zero; /* predicts PTS of NPT=0 packet */
279 int64_t i_pts_offset; /* matches actual PTS to prediction */
283 char *psz_destination;
284 uint32_t payload_bitmap;
286 uint16_t i_port_audio;
287 uint16_t i_port_video;
293 /* in case we do TS/PS over rtp */
295 sout_access_out_t *p_grab;
301 sout_stream_id_t **es;
304 typedef int (*pf_rtp_packetizer_t)( sout_stream_id_t *, block_t * );
306 typedef struct rtp_sink_t
312 struct sout_stream_id_t
314 sout_stream_t *p_stream;
317 uint8_t i_payload_type;
319 uint32_t i_ts_offset;
323 uint16_t i_seq_sent_next;
334 /* Packetizer specific fields */
337 srtp_session_t *srtp;
339 pf_rtp_packetizer_t pf_packetize;
343 vlc_mutex_t lock_sink;
346 rtsp_stream_id_t *rtsp_id;
352 block_fifo_t *p_fifo;
356 /*****************************************************************************
358 *****************************************************************************/
359 static int Open( vlc_object_t *p_this )
361 sout_stream_t *p_stream = (sout_stream_t*)p_this;
362 sout_instance_t *p_sout = p_stream->p_sout;
363 sout_stream_sys_t *p_sys = NULL;
364 config_chain_t *p_cfg = NULL;
368 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
369 ppsz_sout_options, p_stream->p_cfg );
371 p_sys = malloc( sizeof( sout_stream_sys_t ) );
375 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
377 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
378 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
379 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
380 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
382 if( p_sys->i_port_audio && p_sys->i_port_video == p_sys->i_port_audio )
384 msg_Err( p_stream, "audio and video RTP port must be distinct" );
385 free( p_sys->psz_destination );
390 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
392 if( !strcmp( p_cfg->psz_name, "sdp" )
393 && ( p_cfg->psz_value != NULL )
394 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
402 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
405 if( !strncasecmp( psz, "rtsp:", 5 ) )
411 /* Transport protocol */
412 p_sys->proto = IPPROTO_UDP;
413 psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
415 if ((psz == NULL) || !strcasecmp (psz, "udp"))
416 (void)0; /* default */
418 if (!strcasecmp (psz, "dccp"))
420 p_sys->proto = IPPROTO_DCCP;
421 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
425 if (!strcasecmp (psz, "sctp"))
427 p_sys->proto = IPPROTO_TCP;
428 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
433 if (!strcasecmp (psz, "tcp"))
435 p_sys->proto = IPPROTO_TCP;
436 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
440 if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
441 p_sys->proto = IPPROTO_UDPLITE;
443 msg_Warn (p_this, "unknown or unsupported transport protocol \"%s\"",
446 var_Create (p_this, "dccp-service", VLC_VAR_STRING);
448 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
450 msg_Err( p_stream, "missing destination and not in RTSP mode" );
455 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
456 if( p_sys->i_ttl == -1 )
458 /* Normally, we should let the default hop limit up to the core,
459 * but we have to know it to write our RTSP headers properly,
460 * which is why we ask the core. FIXME: broken when neither
461 * sout-rtp-ttl nor ttl are set. */
462 p_sys->i_ttl = var_InheritInteger( p_stream, "ttl" );
465 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
467 /* NPT=0 time will be determined when we packetize the first packet
468 * (of any ES). But we want to be able to report rtptime in RTSP
469 * without waiting. So until then, we use an arbitrary reference
470 * PTS for timestamp computations, and then actual PTS will catch
471 * up using offsets. */
472 p_sys->i_npt_zero = VLC_TS_INVALID;
473 p_sys->i_pts_zero = mdate(); /* arbitrary value, could probably be
475 p_sys->payload_bitmap = 0xFFFFFFFF;
479 p_sys->psz_sdp = NULL;
481 p_sys->b_export_sap = false;
482 p_sys->p_session = NULL;
483 p_sys->psz_sdp_file = NULL;
485 p_sys->p_httpd_host = NULL;
486 p_sys->p_httpd_file = NULL;
488 p_stream->p_sys = p_sys;
490 vlc_mutex_init( &p_sys->lock_sdp );
491 vlc_mutex_init( &p_sys->lock_ts );
492 vlc_mutex_init( &p_sys->lock_es );
494 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
497 sout_stream_id_t *id;
499 /* Check muxer type */
500 if( strncasecmp( psz, "ps", 2 )
501 && strncasecmp( psz, "mpeg1", 5 )
502 && strncasecmp( psz, "ts", 2 ) )
504 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
506 vlc_mutex_destroy( &p_sys->lock_sdp );
507 vlc_mutex_destroy( &p_sys->lock_es );
508 free( p_sys->psz_destination );
513 p_sys->p_grab = GrabberCreate( p_stream );
514 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
517 if( p_sys->p_mux == NULL )
519 msg_Err( p_stream, "cannot create muxer" );
520 sout_AccessOutDelete( p_sys->p_grab );
521 vlc_mutex_destroy( &p_sys->lock_sdp );
522 vlc_mutex_destroy( &p_sys->lock_es );
523 free( p_sys->psz_destination );
528 id = Add( p_stream, NULL );
531 sout_MuxDelete( p_sys->p_mux );
532 sout_AccessOutDelete( p_sys->p_grab );
533 vlc_mutex_destroy( &p_sys->lock_sdp );
534 vlc_mutex_destroy( &p_sys->lock_es );
535 free( p_sys->psz_destination );
540 p_sys->packet = NULL;
542 p_stream->pf_add = MuxAdd;
543 p_stream->pf_del = MuxDel;
544 p_stream->pf_send = MuxSend;
549 p_sys->p_grab = NULL;
551 p_stream->pf_add = Add;
552 p_stream->pf_del = Del;
553 p_stream->pf_send = Send;
556 if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
557 SDPHandleUrl( p_stream, "sap" );
559 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
562 config_chain_t *p_cfg;
564 SDPHandleUrl( p_stream, psz );
566 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
568 if( !strcmp( p_cfg->psz_name, "sdp" ) )
570 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
573 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
574 if( !strcmp( p_cfg->psz_value, psz ) )
577 SDPHandleUrl( p_stream, p_cfg->psz_value );
583 /* update p_sout->i_out_pace_nocontrol */
584 p_stream->p_sout->i_out_pace_nocontrol++;
589 /*****************************************************************************
591 *****************************************************************************/
592 static void Close( vlc_object_t * p_this )
594 sout_stream_t *p_stream = (sout_stream_t*)p_this;
595 sout_stream_sys_t *p_sys = p_stream->p_sys;
597 /* update p_sout->i_out_pace_nocontrol */
598 p_stream->p_sout->i_out_pace_nocontrol--;
602 assert( p_sys->i_es == 1 );
604 sout_MuxDelete( p_sys->p_mux );
605 Del( p_stream, p_sys->es[0] );
606 sout_AccessOutDelete( p_sys->p_grab );
610 block_Release( p_sys->packet );
612 if( p_sys->b_export_sap )
615 SapSetup( p_stream );
619 if( p_sys->rtsp != NULL )
620 RtspUnsetup( p_sys->rtsp );
622 vlc_mutex_destroy( &p_sys->lock_sdp );
623 vlc_mutex_destroy( &p_sys->lock_ts );
624 vlc_mutex_destroy( &p_sys->lock_es );
626 if( p_sys->p_httpd_file )
627 httpd_FileDelete( p_sys->p_httpd_file );
629 if( p_sys->p_httpd_host )
630 httpd_HostDelete( p_sys->p_httpd_host );
632 free( p_sys->psz_sdp );
634 if( p_sys->psz_sdp_file != NULL )
637 unlink( p_sys->psz_sdp_file );
639 free( p_sys->psz_sdp_file );
641 free( p_sys->psz_destination );
645 /*****************************************************************************
647 *****************************************************************************/
648 static void SDPHandleUrl( sout_stream_t *p_stream, const char *psz_url )
650 sout_stream_sys_t *p_sys = p_stream->p_sys;
653 vlc_UrlParse( &url, psz_url, 0 );
654 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
656 if( p_sys->p_httpd_file )
658 msg_Err( p_stream, "you can use sdp=http:// only once" );
662 if( HttpSetup( p_stream, &url ) )
664 msg_Err( p_stream, "cannot export SDP as HTTP" );
667 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
669 if( p_sys->rtsp != NULL )
671 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
675 /* FIXME test if destination is multicast or no destination at all */
676 p_sys->rtsp = RtspSetup( p_stream, &url );
677 if( p_sys->rtsp == NULL )
678 msg_Err( p_stream, "cannot export SDP as RTSP" );
680 if( p_sys->p_mux != NULL )
682 sout_stream_id_t *id = p_sys->es[0];
683 id->rtsp_id = RtspAddId( p_sys->rtsp, id, GetDWBE( id->ssrc ),
684 p_sys->psz_destination, p_sys->i_ttl,
685 id->i_port, id->i_port + 1 );
688 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
689 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
691 p_sys->b_export_sap = true;
692 SapSetup( p_stream );
694 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
696 if( p_sys->psz_sdp_file != NULL )
698 msg_Err( p_stream, "you can use sdp=file:// only once" );
701 p_sys->psz_sdp_file = make_path( psz_url );
702 if( p_sys->psz_sdp_file == NULL )
704 FileSetup( p_stream );
708 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
713 vlc_UrlClean( &url );
716 /*****************************************************************************
718 *****************************************************************************/
720 char *SDPGenerate( sout_stream_t *p_stream, const char *rtsp_url )
722 sout_stream_sys_t *p_sys = p_stream->p_sys;
723 char *psz_sdp = NULL;
724 struct sockaddr_storage dst;
728 * When we have a fixed destination (typically when we do multicast),
729 * we need to put the actual port numbers in the SDP.
730 * When there is no fixed destination, we only support RTSP unicast
731 * on-demand setup, so we should rather let the clients decide which ports
733 * When there is both a fixed destination and RTSP unicast, we need to
734 * put port numbers used by the fixed destination, otherwise the SDP would
735 * become totally incorrect for multicast use. It should be noted that
736 * port numbers from SDP with RTSP are only "recommendation" from the
737 * server to the clients (per RFC2326), so only broken clients will fail
738 * to handle this properly. There is no solution but to use two differents
739 * output chain with two different RTSP URLs if you need to handle this
744 vlc_mutex_lock( &p_sys->lock_es );
745 if( unlikely(p_sys->i_es == 0) )
746 goto out; /* hmm... */
748 if( p_sys->psz_destination != NULL )
752 /* Oh boy, this is really ugly! */
753 dstlen = sizeof( dst );
754 if( p_sys->es[0]->listen.fd != NULL )
755 getsockname( p_sys->es[0]->listen.fd[0],
756 (struct sockaddr *)&dst, &dstlen );
758 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
759 (struct sockaddr *)&dst, &dstlen );
765 /* Check against URL format rtsp://[<ipv6>]:<port>/<path> */
766 bool ipv6 = rtsp_url != NULL && strlen( rtsp_url ) > 7
767 && rtsp_url[7] == '[';
769 /* Dummy destination address for RTSP */
770 dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
771 : sizeof( struct sockaddr_in );
772 memset (&dst, 0, dstlen);
773 dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
779 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
780 NULL, 0, (struct sockaddr *)&dst, dstlen );
781 if( psz_sdp == NULL )
784 /* TODO: a=source-filter */
785 if( p_sys->rtcp_mux )
786 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
788 if( rtsp_url != NULL )
789 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
791 const char *proto = "RTP/AVP"; /* protocol */
792 if( rtsp_url == NULL )
794 switch( p_sys->proto )
799 proto = "TCP/RTP/AVP";
802 proto = "DCCP/RTP/AVP";
804 case IPPROTO_UDPLITE:
809 for( i = 0; i < p_sys->i_es; i++ )
811 sout_stream_id_t *id = p_sys->es[i];
812 const char *mime_major; /* major MIME type */
817 mime_major = "video";
820 mime_major = "audio";
829 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
830 id->i_payload_type, false, id->i_bitrate,
831 id->psz_enc, id->i_clock_rate, id->i_channels,
834 /* cf RFC4566 §5.14 */
835 if( inclport && !p_sys->rtcp_mux && (id->i_port & 1) )
836 sdp_AddAttribute ( &psz_sdp, "rtcp", "%u", id->i_port + 1 );
838 if( rtsp_url != NULL )
840 char *track_url = RtspAppendTrackPath( id->rtsp_id, rtsp_url );
841 if( track_url != NULL )
843 sdp_AddAttribute ( &psz_sdp, "control", "%s", track_url );
849 if( id->listen.fd != NULL )
850 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
851 if( p_sys->proto == IPPROTO_DCCP )
852 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
853 "SC:RTP%c", toupper( mime_major[0] ) );
857 vlc_mutex_unlock( &p_sys->lock_es );
861 /*****************************************************************************
863 *****************************************************************************/
865 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
867 static const char hex[16] = "0123456789abcdef";
869 for( int i = 0; i < i_data; i++ )
871 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
872 s[2*i+1] = hex[(p_data[i] )&0xf];
878 * Shrink the MTU down to a fixed packetization time (for audio).
881 rtp_set_ptime (sout_stream_id_t *id, unsigned ptime_ms, size_t bytes)
883 /* Samples per second */
884 size_t spl = (id->i_clock_rate - 1) * ptime_ms / 1000 + 1;
885 bytes *= id->i_channels;
888 if (spl < rtp_mtu (id)) /* MTU is big enough for ptime */
889 id->i_mtu = 12 + spl;
890 else /* MTU is too small for ptime, align to a sample boundary */
891 id->i_mtu = 12 + (((id->i_mtu - 12) / bytes) * bytes);
894 uint32_t rtp_compute_ts( const sout_stream_id_t *id, int64_t i_pts )
896 /* NOTE: this plays nice with offsets because the calculations are
898 return i_pts * (int64_t)id->i_clock_rate / CLOCK_FREQ;
901 /** Add an ES as a new RTP stream */
902 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
904 /* NOTE: As a special case, if we use a non-RTP
905 * mux (TS/PS), then p_fmt is NULL. */
906 sout_stream_sys_t *p_sys = p_stream->p_sys;
909 if (0 == p_sys->payload_bitmap)
911 msg_Err (p_stream, "too many RTP elementary streams");
915 sout_stream_id_t *id = malloc( sizeof( *id ) );
916 if( unlikely(id == NULL) )
918 id->p_stream = p_stream;
920 /* Look for free dymanic payload type */
921 id->i_payload_type = 96 + clz32 (p_sys->payload_bitmap);
922 assert (id->i_payload_type < 128);
924 vlc_rand_bytes (&id->i_sequence, sizeof (id->i_sequence));
925 vlc_rand_bytes (id->ssrc, sizeof (id->ssrc));
929 id->i_clock_rate = 90000; /* most common case for video */
933 id->i_cat = p_fmt->i_cat;
934 if( p_fmt->i_cat == AUDIO_ES )
936 id->i_clock_rate = p_fmt->audio.i_rate;
937 id->i_channels = p_fmt->audio.i_channels;
939 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
943 id->i_cat = VIDEO_ES;
947 id->i_mtu = var_InheritInteger( p_stream, "mtu" );
948 if( id->i_mtu <= 12 + 16 )
949 id->i_mtu = 576 - 20 - 8; /* pessimistic */
950 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
952 id->pf_packetize = NULL;
957 vlc_mutex_init( &id->lock_sink );
962 id->listen.fd = NULL;
965 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
968 char *key = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"key");
971 id->srtp = srtp_create (SRTP_ENCR_AES_CM, SRTP_AUTH_HMAC_SHA1, 10,
972 SRTP_PRF_AES_CM, SRTP_RCC_MODE1);
973 if (id->srtp == NULL)
979 char *salt = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"salt");
980 errno = srtp_setkeystring (id->srtp, key, salt ? salt : "");
985 msg_Err (p_stream, "bad SRTP key/salt combination (%m)");
988 id->i_sequence = 0; /* FIXME: awful hack for libvlc_srtp */
992 id->i_seq_sent_next = id->i_sequence;
994 if( p_sys->psz_destination != NULL )
996 /* Choose the port */
1001 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
1002 i_port = p_sys->i_port_audio;
1004 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
1005 i_port = p_sys->i_port_video;
1007 /* We do not need the ES lock (p_sys->lock_es) here, because
1008 * this is the only one thread that can *modify* the ES table.
1009 * The ES lock protects the other threads from our modifications
1010 * (TAB_APPEND, TAB_REMOVE). */
1011 for (int i = 0; i_port && (i < p_sys->i_es); i++)
1012 if (i_port == p_sys->es[i]->i_port)
1013 i_port = 0; /* Port already in use! */
1014 for (uint16_t p = p_sys->i_port; i_port == 0; p += 2)
1018 msg_Err (p_stream, "too many RTP elementary streams");
1022 for (int i = 0; i_port && (i < p_sys->i_es); i++)
1023 if (p == p_sys->es[i]->i_port)
1027 id->i_port = i_port;
1029 int type = SOCK_STREAM;
1031 switch( p_sys->proto )
1039 case VIDEO_ES: code = "RTPV"; break;
1040 case AUDIO_ES: code = "RTPARTPV"; break;
1041 case SPU_ES: code = "RTPTRTPV"; break;
1042 default: code = "RTPORTPV"; break;
1044 var_SetString (p_stream, "dccp-service", code);
1046 } /* fall through */
1049 id->listen.fd = net_Listen( VLC_OBJECT(p_stream),
1050 p_sys->psz_destination, i_port,
1051 type, p_sys->proto );
1052 if( id->listen.fd == NULL )
1054 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
1057 if( vlc_clone( &id->listen.thread, rtp_listen_thread, id,
1058 VLC_THREAD_PRIORITY_LOW ) )
1060 net_ListenClose( id->listen.fd );
1061 id->listen.fd = NULL;
1068 int ttl = (p_sys->i_ttl >= 0) ? p_sys->i_ttl : -1;
1069 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
1070 i_port, ttl, p_sys->proto );
1073 msg_Err( p_stream, "cannot create RTP socket" );
1076 /* Ignore any unexpected incoming packet (including RTCP-RR
1077 * packets in case of rtcp-mux) */
1078 setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &(int){ 0 },
1080 rtp_add_sink( id, fd, p_sys->rtcp_mux, NULL );
1087 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
1089 if( psz == NULL ) /* Uho! */
1092 if( strncmp( psz, "ts", 2 ) == 0 )
1094 id->i_payload_type = 33;
1095 id->psz_enc = "MP2T";
1099 id->psz_enc = "MP2P";
1104 switch( p_fmt->i_codec )
1106 case VLC_CODEC_MULAW:
1107 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
1108 id->i_payload_type = 0;
1109 id->psz_enc = "PCMU";
1110 id->pf_packetize = rtp_packetize_split;
1111 rtp_set_ptime (id, 20, 1);
1113 case VLC_CODEC_ALAW:
1114 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
1115 id->i_payload_type = 8;
1116 id->psz_enc = "PCMA";
1117 id->pf_packetize = rtp_packetize_split;
1118 rtp_set_ptime (id, 20, 1);
1120 case VLC_CODEC_S16B:
1121 case VLC_CODEC_S16L:
1122 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
1124 id->i_payload_type = 11;
1126 else if( p_fmt->audio.i_channels == 2 &&
1127 p_fmt->audio.i_rate == 44100 )
1129 id->i_payload_type = 10;
1131 id->psz_enc = "L16";
1132 if( p_fmt->i_codec == VLC_CODEC_S16B )
1133 id->pf_packetize = rtp_packetize_split;
1135 id->pf_packetize = rtp_packetize_swab;
1136 rtp_set_ptime (id, 20, 2);
1140 id->pf_packetize = rtp_packetize_split;
1141 rtp_set_ptime (id, 20, 1);
1143 case VLC_CODEC_MPGA:
1144 id->i_payload_type = 14;
1145 id->psz_enc = "MPA";
1146 id->i_clock_rate = 90000; /* not 44100 */
1147 id->pf_packetize = rtp_packetize_mpa;
1149 case VLC_CODEC_MPGV:
1150 id->i_payload_type = 32;
1151 id->psz_enc = "MPV";
1152 id->pf_packetize = rtp_packetize_mpv;
1154 case VLC_CODEC_ADPCM_G726:
1155 switch( p_fmt->i_bitrate / 1000 )
1158 id->psz_enc = "G726-16";
1159 id->pf_packetize = rtp_packetize_g726_16;
1162 id->psz_enc = "G726-24";
1163 id->pf_packetize = rtp_packetize_g726_24;
1166 id->psz_enc = "G726-32";
1167 id->pf_packetize = rtp_packetize_g726_32;
1170 id->psz_enc = "G726-40";
1171 id->pf_packetize = rtp_packetize_g726_40;
1174 msg_Err( p_stream, "cannot add this stream (unsupported "
1175 "G.726 bit rate: %u)", p_fmt->i_bitrate );
1180 id->psz_enc = "ac3";
1181 id->pf_packetize = rtp_packetize_ac3;
1183 case VLC_CODEC_H263:
1184 id->psz_enc = "H263-1998";
1185 id->pf_packetize = rtp_packetize_h263;
1187 case VLC_CODEC_H264:
1188 id->psz_enc = "H264";
1189 id->pf_packetize = rtp_packetize_h264;
1190 id->psz_fmtp = NULL;
1192 if( p_fmt->i_extra > 0 )
1194 uint8_t *p_buffer = p_fmt->p_extra;
1195 int i_buffer = p_fmt->i_extra;
1196 char *p_64_sps = NULL;
1197 char *p_64_pps = NULL;
1200 while( i_buffer > 4 )
1205 while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
1210 if( i_buffer == 0 ) break;
1213 if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
1215 msg_Dbg( p_stream, "No startcode found..");
1221 const int i_nal_type = p_buffer[0]&0x1f;
1223 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1226 for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
1228 if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
1230 /* we found another startcode */
1231 while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
1240 msg_Dbg( p_stream, "No-info found in nal ");
1244 if( i_nal_type == 7 )
1246 p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
1247 sprintf_hexa( hexa, &p_buffer[5], 3 );
1249 else if( i_nal_type == 8 )
1251 p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
1257 if( p_64_sps && p_64_pps &&
1258 ( asprintf( &id->psz_fmtp,
1259 "packetization-mode=1;profile-level-id=%s;"
1260 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1261 p_64_pps ) == -1 ) )
1262 id->psz_fmtp = NULL;
1267 id->psz_fmtp = strdup( "packetization-mode=1" );
1270 case VLC_CODEC_MP4V:
1272 id->psz_enc = "MP4V-ES";
1273 id->pf_packetize = rtp_packetize_split;
1274 if( p_fmt->i_extra > 0 )
1276 char hexa[2*p_fmt->i_extra +1];
1277 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1278 if( asprintf( &id->psz_fmtp,
1279 "profile-level-id=3; config=%s;", hexa ) == -1 )
1280 id->psz_fmtp = NULL;
1284 case VLC_CODEC_MP4A:
1288 char hexa[2*p_fmt->i_extra +1];
1290 id->psz_enc = "mpeg4-generic";
1291 id->pf_packetize = rtp_packetize_mp4a;
1292 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1293 if( asprintf( &id->psz_fmtp,
1294 "streamtype=5; profile-level-id=15; "
1295 "mode=AAC-hbr; config=%s; SizeLength=13; "
1296 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1298 id->psz_fmtp = NULL;
1304 unsigned char config[6];
1305 unsigned int aacsrates[15] = {
1306 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1307 16000, 12000, 11025, 8000, 7350, 0, 0 };
1309 for( i = 0; i < 15; i++ )
1310 if( p_fmt->audio.i_rate == aacsrates[i] )
1316 config[3]=p_fmt->audio.i_channels<<4;
1320 id->psz_enc = "MP4A-LATM";
1321 id->pf_packetize = rtp_packetize_mp4a_latm;
1322 sprintf_hexa( hexa, config, 6 );
1323 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1324 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1325 id->psz_fmtp = NULL;
1329 case VLC_CODEC_AMR_NB:
1330 id->psz_enc = "AMR";
1331 id->psz_fmtp = strdup( "octet-align=1" );
1332 id->pf_packetize = rtp_packetize_amr;
1334 case VLC_CODEC_AMR_WB:
1335 id->psz_enc = "AMR-WB";
1336 id->psz_fmtp = strdup( "octet-align=1" );
1337 id->pf_packetize = rtp_packetize_amr;
1339 case VLC_CODEC_SPEEX:
1340 id->psz_enc = "SPEEX";
1341 id->pf_packetize = rtp_packetize_spx;
1343 case VLC_CODEC_ITU_T140:
1344 id->psz_enc = "t140" ;
1345 id->i_clock_rate = 1000;
1346 id->pf_packetize = rtp_packetize_t140;
1350 msg_Err( p_stream, "cannot add this stream (unsupported "
1351 "codec: %4.4s)", (char*)&p_fmt->i_codec );
1354 if (id->i_payload_type >= 96)
1355 /* Mark dynamic payload type in use */
1356 p_sys->payload_bitmap &= ~(1 << (127 - id->i_payload_type));
1358 #if 0 /* No payload formats sets this at the moment */
1361 cscov += 8 /* UDP */ + 12 /* RTP */;
1363 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1366 vlc_mutex_lock( &p_sys->lock_ts );
1367 id->b_ts_init = ( p_sys->i_npt_zero != VLC_TS_INVALID );
1368 vlc_mutex_unlock( &p_sys->lock_ts );
1370 id->i_ts_offset = rtp_compute_ts( id, p_sys->i_pts_offset );
1372 if( p_sys->rtsp != NULL )
1373 id->rtsp_id = RtspAddId( p_sys->rtsp, id,
1374 GetDWBE( id->ssrc ),
1375 p_sys->psz_destination,
1376 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1378 id->p_fifo = block_FifoNew();
1379 if( unlikely(id->p_fifo == NULL) )
1381 if( vlc_clone( &id->thread, ThreadSend, id, VLC_THREAD_PRIORITY_HIGHEST ) )
1383 block_FifoRelease( id->p_fifo );
1388 /* Update p_sys context */
1389 vlc_mutex_lock( &p_sys->lock_es );
1390 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1391 vlc_mutex_unlock( &p_sys->lock_es );
1393 psz_sdp = SDPGenerate( p_stream, NULL );
1395 vlc_mutex_lock( &p_sys->lock_sdp );
1396 free( p_sys->psz_sdp );
1397 p_sys->psz_sdp = psz_sdp;
1398 vlc_mutex_unlock( &p_sys->lock_sdp );
1400 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1402 /* Update SDP (sap/file) */
1403 if( p_sys->b_export_sap ) SapSetup( p_stream );
1404 if( p_sys->psz_sdp_file != NULL ) FileSetup( p_stream );
1409 Del( p_stream, id );
1413 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1415 sout_stream_sys_t *p_sys = p_stream->p_sys;
1417 vlc_mutex_lock( &p_sys->lock_es );
1418 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1419 vlc_mutex_unlock( &p_sys->lock_es );
1421 if( likely(id->p_fifo != NULL) )
1423 vlc_cancel( id->thread );
1424 vlc_join( id->thread, NULL );
1425 block_FifoRelease( id->p_fifo );
1428 /* Release dynamic payload type */
1429 if (id->i_payload_type >= 96)
1430 p_sys->payload_bitmap |= 1 << (127 - id->i_payload_type);
1432 free( id->psz_fmtp );
1435 RtspDelId( p_sys->rtsp, id->rtsp_id );
1436 if( id->listen.fd != NULL )
1438 vlc_cancel( id->listen.thread );
1439 vlc_join( id->listen.thread, NULL );
1440 net_ListenClose( id->listen.fd );
1442 /* Delete remaining sinks (incoming connections or explicit
1444 while( id->sinkc > 0 )
1445 rtp_del_sink( id, id->sinkv[0].rtp_fd );
1447 if( id->srtp != NULL )
1448 srtp_destroy( id->srtp );
1451 vlc_mutex_destroy( &id->lock_sink );
1453 /* Update SDP (sap/file) */
1454 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1455 if( p_sys->psz_sdp_file != NULL ) FileSetup( p_stream );
1461 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1466 assert( p_stream->p_sys->p_mux == NULL );
1469 while( p_buffer != NULL )
1471 p_next = p_buffer->p_next;
1472 if( id->pf_packetize( id, p_buffer ) )
1475 block_Release( p_buffer );
1481 /****************************************************************************
1483 ****************************************************************************/
1484 static int SapSetup( sout_stream_t *p_stream )
1486 sout_stream_sys_t *p_sys = p_stream->p_sys;
1487 sout_instance_t *p_sout = p_stream->p_sout;
1489 /* Remove the previous session */
1490 if( p_sys->p_session != NULL)
1492 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1493 p_sys->p_session = NULL;
1496 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1498 announce_method_t *p_method = sout_SAPMethod();
1499 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1501 p_sys->psz_destination,
1503 sout_MethodRelease( p_method );
1509 /****************************************************************************
1511 ****************************************************************************/
1512 static int FileSetup( sout_stream_t *p_stream )
1514 sout_stream_sys_t *p_sys = p_stream->p_sys;
1517 if( p_sys->psz_sdp == NULL )
1518 return VLC_EGENERIC; /* too early */
1520 if( ( f = vlc_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1522 msg_Err( p_stream, "cannot open file '%s' (%m)",
1523 p_sys->psz_sdp_file );
1524 return VLC_EGENERIC;
1527 fputs( p_sys->psz_sdp, f );
1533 /****************************************************************************
1535 ****************************************************************************/
1536 static int HttpCallback( httpd_file_sys_t *p_args,
1537 httpd_file_t *, uint8_t *p_request,
1538 uint8_t **pp_data, int *pi_data );
1540 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t *url)
1542 sout_stream_sys_t *p_sys = p_stream->p_sys;
1544 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1545 url->i_port > 0 ? url->i_port : 80 );
1546 if( p_sys->p_httpd_host )
1548 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1549 url->psz_path ? url->psz_path : "/",
1552 HttpCallback, (void*)p_sys );
1554 if( p_sys->p_httpd_file == NULL )
1556 return VLC_EGENERIC;
1561 static int HttpCallback( httpd_file_sys_t *p_args,
1562 httpd_file_t *f, uint8_t *p_request,
1563 uint8_t **pp_data, int *pi_data )
1565 VLC_UNUSED(f); VLC_UNUSED(p_request);
1566 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1568 vlc_mutex_lock( &p_sys->lock_sdp );
1569 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1571 *pi_data = strlen( p_sys->psz_sdp );
1572 *pp_data = malloc( *pi_data );
1573 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1580 vlc_mutex_unlock( &p_sys->lock_sdp );
1585 /****************************************************************************
1587 ****************************************************************************/
1588 static void* ThreadSend( void *data )
1591 # define ECONNREFUSED WSAECONNREFUSED
1592 # define ENOPROTOOPT WSAENOPROTOOPT
1593 # define EHOSTUNREACH WSAEHOSTUNREACH
1594 # define ENETUNREACH WSAENETUNREACH
1595 # define ENETDOWN WSAENETDOWN
1596 # define ENOBUFS WSAENOBUFS
1597 # define EAGAIN WSAEWOULDBLOCK
1598 # define EWOULDBLOCK WSAEWOULDBLOCK
1600 sout_stream_id_t *id = data;
1601 unsigned i_caching = id->i_caching;
1605 block_t *out = block_FifoGet( id->p_fifo );
1606 block_cleanup_push (out);
1610 { /* FIXME: this is awfully inefficient */
1611 size_t len = out->i_buffer;
1612 out = block_Realloc( out, 0, len + 10 );
1613 out->i_buffer = len;
1615 int canc = vlc_savecancel ();
1616 int val = srtp_send( id->srtp, out->p_buffer, &len, len + 10 );
1617 vlc_restorecancel (canc);
1621 msg_Dbg( id->p_stream, "SRTP sending error: %m" );
1622 block_Release( out );
1626 out->i_buffer = len;
1630 mwait (out->i_dts + i_caching);
1635 ssize_t len = out->i_buffer;
1636 int canc = vlc_savecancel ();
1638 vlc_mutex_lock( &id->lock_sink );
1639 unsigned deadc = 0; /* How many dead sockets? */
1640 int deadv[id->sinkc]; /* Dead sockets list */
1642 for( int i = 0; i < id->sinkc; i++ )
1645 if( !id->srtp ) /* FIXME: SRTCP support */
1647 SendRTCP( id->sinkv[i].rtcp, out );
1649 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1653 /* Soft errors (e.g. ICMP): */
1654 case ECONNREFUSED: /* Port unreachable */
1657 case EPROTO: /* Protocol unreachable */
1659 case EHOSTUNREACH: /* Host unreachable */
1660 case ENETUNREACH: /* Network unreachable */
1661 case ENETDOWN: /* Entire network down */
1662 send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 );
1663 /* Transient congestion: */
1664 case ENOMEM: /* out of socket buffers */
1667 #if (EAGAIN != EWOULDBLOCK)
1673 deadv[deadc++] = id->sinkv[i].rtp_fd;
1675 id->i_seq_sent_next = ntohs(((uint16_t *) out->p_buffer)[1]) + 1;
1676 vlc_mutex_unlock( &id->lock_sink );
1677 block_Release( out );
1679 for( unsigned i = 0; i < deadc; i++ )
1681 msg_Dbg( id->p_stream, "removing socket %d", deadv[i] );
1682 rtp_del_sink( id, deadv[i] );
1684 vlc_restorecancel (canc);
1690 /* This thread dequeues incoming connections (DCCP streaming) */
1691 static void *rtp_listen_thread( void *data )
1693 sout_stream_id_t *id = data;
1695 assert( id->listen.fd != NULL );
1699 int fd = net_Accept( id->p_stream, id->listen.fd );
1702 int canc = vlc_savecancel( );
1703 rtp_add_sink( id, fd, true, NULL );
1704 vlc_restorecancel( canc );
1711 int rtp_add_sink( sout_stream_id_t *id, int fd, bool rtcp_mux, uint16_t *seq )
1713 rtp_sink_t sink = { fd, NULL };
1714 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1716 if( sink.rtcp == NULL )
1717 msg_Err( id->p_stream, "RTCP failed!" );
1719 vlc_mutex_lock( &id->lock_sink );
1720 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1722 *seq = id->i_seq_sent_next;
1723 vlc_mutex_unlock( &id->lock_sink );
1727 void rtp_del_sink( sout_stream_id_t *id, int fd )
1729 rtp_sink_t sink = { fd, NULL };
1731 /* NOTE: must be safe to use if fd is not included */
1732 vlc_mutex_lock( &id->lock_sink );
1733 for( int i = 0; i < id->sinkc; i++ )
1735 if (id->sinkv[i].rtp_fd == fd)
1737 sink = id->sinkv[i];
1738 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1742 vlc_mutex_unlock( &id->lock_sink );
1744 CloseRTCP( sink.rtcp );
1745 net_Close( sink.rtp_fd );
1748 uint16_t rtp_get_seq( sout_stream_id_t *id )
1750 /* This will return values for the next packet. */
1753 vlc_mutex_lock( &id->lock_sink );
1754 seq = id->i_seq_sent_next;
1755 vlc_mutex_unlock( &id->lock_sink );
1760 /* Return a timestamp corresponding to packets being sent now, and that
1761 * can be passed to rtp_compute_ts() to get rtptime values for each ES. */
1762 int64_t rtp_get_ts( const sout_stream_t *p_stream )
1764 sout_stream_sys_t *p_sys = p_stream->p_sys;
1766 vlc_mutex_lock( &p_sys->lock_ts );
1767 i_npt_zero = p_sys->i_npt_zero;
1768 vlc_mutex_unlock( &p_sys->lock_ts );
1770 if( i_npt_zero == VLC_TS_INVALID )
1771 return p_sys->i_pts_zero;
1773 mtime_t now = mdate();
1774 if( now < i_npt_zero )
1775 return p_sys->i_pts_zero;
1777 return p_sys->i_pts_zero + (now - i_npt_zero);
1780 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1781 int b_marker, int64_t i_pts )
1783 if( !id->b_ts_init )
1785 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1786 vlc_mutex_lock( &p_sys->lock_ts );
1787 if( p_sys->i_npt_zero == VLC_TS_INVALID )
1789 /* This is the first packet of any ES. We initialize the
1790 * NPT=0 time reference, and the offset to match the
1791 * arbitrary PTS reference. */
1792 p_sys->i_npt_zero = i_pts + id->i_caching;
1793 p_sys->i_pts_offset = p_sys->i_pts_zero - i_pts;
1795 vlc_mutex_unlock( &p_sys->lock_ts );
1797 /* And in any case this is the first packet of this ES, so we
1798 * initialize the offset for this ES. */
1799 id->i_ts_offset = rtp_compute_ts( id, p_sys->i_pts_offset );
1800 id->b_ts_init = true;
1803 uint32_t i_timestamp = rtp_compute_ts( id, i_pts ) + id->i_ts_offset;
1805 out->p_buffer[0] = 0x80;
1806 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1807 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1808 out->p_buffer[3] = ( id->i_sequence )&0xff;
1809 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1810 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1811 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1812 out->p_buffer[7] = ( i_timestamp )&0xff;
1814 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1820 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1822 block_FifoPut( id->p_fifo, out );
1826 * @return configured max RTP payload size (including payload type-specific
1827 * headers, excluding RTP and transport headers)
1829 size_t rtp_mtu (const sout_stream_id_t *id)
1831 return id->i_mtu - 12;
1834 /*****************************************************************************
1836 *****************************************************************************/
1838 /** Add an ES to a non-RTP muxed stream */
1839 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1841 sout_input_t *p_input;
1842 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1843 assert( p_mux != NULL );
1845 p_input = sout_MuxAddStream( p_mux, p_fmt );
1846 if( p_input == NULL )
1848 msg_Err( p_stream, "cannot add this stream to the muxer" );
1852 return (sout_stream_id_t *)p_input;
1856 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1859 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1860 assert( p_mux != NULL );
1862 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1867 /** Remove an ES from a non-RTP muxed stream */
1868 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1870 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1871 assert( p_mux != NULL );
1873 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1878 static ssize_t AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1879 const block_t *p_buffer )
1881 sout_stream_sys_t *p_sys = p_stream->p_sys;
1882 sout_stream_id_t *id = p_sys->es[0];
1884 int64_t i_dts = p_buffer->i_dts;
1886 uint8_t *p_data = p_buffer->p_buffer;
1887 size_t i_data = p_buffer->i_buffer;
1888 size_t i_max = id->i_mtu - 12;
1890 size_t i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1896 /* output complete packet */
1897 if( p_sys->packet &&
1898 p_sys->packet->i_buffer + i_data > i_max )
1900 rtp_packetize_send( id, p_sys->packet );
1901 p_sys->packet = NULL;
1904 if( p_sys->packet == NULL )
1906 /* allocate a new packet */
1907 p_sys->packet = block_New( p_stream, id->i_mtu );
1908 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1909 p_sys->packet->i_dts = i_dts;
1910 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1911 i_dts += p_sys->packet->i_length;
1914 i_size = __MIN( i_data,
1915 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1917 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1920 p_sys->packet->i_buffer += i_size;
1929 static ssize_t AccessOutGrabberWrite( sout_access_out_t *p_access,
1932 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1938 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1940 p_next = p_buffer->p_next;
1941 block_Release( p_buffer );
1949 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1951 sout_access_out_t *p_grab;
1953 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1954 if( p_grab == NULL )
1957 p_grab->p_module = NULL;
1958 p_grab->psz_access = strdup( "grab" );
1959 p_grab->p_cfg = NULL;
1960 p_grab->psz_path = strdup( "" );
1961 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1962 p_grab->pf_seek = NULL;
1963 p_grab->pf_write = AccessOutGrabberWrite;
1964 vlc_object_attach( p_grab, p_stream );