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>
40 #include <vlc_charset.h>
41 #include <vlc_strings.h>
50 # include <sys/types.h>
53 # include <sys/stat.h>
55 #ifdef HAVE_ARPA_INET_H
56 # include <arpa/inet.h>
58 #ifdef HAVE_LINUX_DCCP_H
59 # include <linux/dccp.h>
62 # define IPPROTO_DCCP 33
64 #ifndef IPPROTO_UDPLITE
65 # define IPPROTO_UDPLITE 136
72 /*****************************************************************************
74 *****************************************************************************/
76 #define DEST_TEXT N_("Destination")
77 #define DEST_LONGTEXT N_( \
78 "This is the output URL that will be used." )
79 #define SDP_TEXT N_("SDP")
80 #define SDP_LONGTEXT N_( \
81 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
82 "session will be made available. You must use an url: http://location to " \
83 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
84 "for the SDP to be announced via SAP." )
85 #define SAP_TEXT N_("SAP announcing")
86 #define SAP_LONGTEXT N_("Announce this session with SAP.")
87 #define MUX_TEXT N_("Muxer")
88 #define MUX_LONGTEXT N_( \
89 "This allows you to specify the muxer used for the streaming output. " \
90 "Default is to use no muxer (standard RTP stream)." )
92 #define NAME_TEXT N_("Session name")
93 #define NAME_LONGTEXT N_( \
94 "This is the name of the session that will be announced in the SDP " \
95 "(Session Descriptor)." )
96 #define DESC_TEXT N_("Session description")
97 #define DESC_LONGTEXT N_( \
98 "This allows you to give a short description with details about the stream, " \
99 "that will be announced in the SDP (Session Descriptor)." )
100 #define URL_TEXT N_("Session URL")
101 #define URL_LONGTEXT N_( \
102 "This allows you to give an URL with more details about the stream " \
103 "(often the website of the streaming organization), that will " \
104 "be announced in the SDP (Session Descriptor)." )
105 #define EMAIL_TEXT N_("Session email")
106 #define EMAIL_LONGTEXT N_( \
107 "This allows you to give a contact mail address for the stream, that will " \
108 "be announced in the SDP (Session Descriptor)." )
109 #define PHONE_TEXT N_("Session phone number")
110 #define PHONE_LONGTEXT N_( \
111 "This allows you to give a contact telephone number for the stream, that will " \
112 "be announced in the SDP (Session Descriptor)." )
114 #define PORT_TEXT N_("Port")
115 #define PORT_LONGTEXT N_( \
116 "This allows you to specify the base port for the RTP streaming." )
117 #define PORT_AUDIO_TEXT N_("Audio port")
118 #define PORT_AUDIO_LONGTEXT N_( \
119 "This allows you to specify the default audio port for the RTP streaming." )
120 #define PORT_VIDEO_TEXT N_("Video port")
121 #define PORT_VIDEO_LONGTEXT N_( \
122 "This allows you to specify the default video port for the RTP streaming." )
124 #define TTL_TEXT N_("Hop limit (TTL)")
125 #define TTL_LONGTEXT N_( \
126 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
127 "the multicast packets sent by the stream output (-1 = use operating " \
128 "system built-in default).")
130 #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
131 #define RTCP_MUX_LONGTEXT N_( \
132 "This sends and receives RTCP packet multiplexed over the same port " \
135 #define CACHING_TEXT N_("Caching value (ms)")
136 #define CACHING_LONGTEXT N_( \
137 "Default caching value for outbound RTP streams. This " \
138 "value should be set in milliseconds." )
140 #define PROTO_TEXT N_("Transport protocol")
141 #define PROTO_LONGTEXT N_( \
142 "This selects which transport protocol to use for RTP." )
144 #define SRTP_KEY_TEXT N_("SRTP key (hexadecimal)")
145 #define SRTP_KEY_LONGTEXT N_( \
146 "RTP packets will be integrity-protected and ciphered "\
147 "with this Secure RTP master shared secret key.")
149 #define SRTP_SALT_TEXT N_("SRTP salt (hexadecimal)")
150 #define SRTP_SALT_LONGTEXT N_( \
151 "Secure RTP requires a (non-secret) master salt value.")
153 static const char *const ppsz_protos[] = {
154 "dccp", "sctp", "tcp", "udp", "udplite",
157 static const char *const ppsz_protocols[] = {
158 "DCCP", "SCTP", "TCP", "UDP", "UDP-Lite",
161 #define RFC3016_TEXT N_("MP4A LATM")
162 #define RFC3016_LONGTEXT N_( \
163 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
165 static int Open ( vlc_object_t * );
166 static void Close( vlc_object_t * );
168 #define SOUT_CFG_PREFIX "sout-rtp-"
169 #define MAX_EMPTY_BLOCKS 200
172 set_shortname( N_("RTP"))
173 set_description( N_("RTP stream output") )
174 set_capability( "sout stream", 0 )
175 add_shortcut( "rtp" )
176 set_category( CAT_SOUT )
177 set_subcategory( SUBCAT_SOUT_STREAM )
179 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
180 DEST_LONGTEXT, true )
181 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
183 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
185 add_bool( SOUT_CFG_PREFIX "sap", false, NULL, SAP_TEXT, SAP_LONGTEXT,
188 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
189 NAME_LONGTEXT, true )
190 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
191 DESC_LONGTEXT, true )
192 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
194 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
195 EMAIL_LONGTEXT, true )
196 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
197 PHONE_LONGTEXT, true )
199 add_string( SOUT_CFG_PREFIX "proto", "udp", NULL, PROTO_TEXT,
200 PROTO_LONGTEXT, false )
201 change_string_list( ppsz_protos, ppsz_protocols, NULL )
202 add_integer( SOUT_CFG_PREFIX "port", 5004, NULL, PORT_TEXT,
203 PORT_LONGTEXT, true )
204 add_integer( SOUT_CFG_PREFIX "port-audio", 0, NULL, PORT_AUDIO_TEXT,
205 PORT_AUDIO_LONGTEXT, true )
206 add_integer( SOUT_CFG_PREFIX "port-video", 0, NULL, PORT_VIDEO_TEXT,
207 PORT_VIDEO_LONGTEXT, true )
209 add_integer( SOUT_CFG_PREFIX "ttl", -1, NULL, TTL_TEXT,
211 add_bool( SOUT_CFG_PREFIX "rtcp-mux", false, NULL,
212 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, false )
213 add_integer( SOUT_CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL,
214 CACHING_TEXT, CACHING_LONGTEXT, true )
217 add_string( SOUT_CFG_PREFIX "key", "", NULL,
218 SRTP_KEY_TEXT, SRTP_KEY_LONGTEXT, false )
219 add_string( SOUT_CFG_PREFIX "salt", "", NULL,
220 SRTP_SALT_TEXT, SRTP_SALT_LONGTEXT, false )
223 add_bool( SOUT_CFG_PREFIX "mp4a-latm", false, NULL, RFC3016_TEXT,
224 RFC3016_LONGTEXT, false )
226 set_callbacks( Open, Close )
229 /*****************************************************************************
230 * Exported prototypes
231 *****************************************************************************/
232 static const char *const ppsz_sout_options[] = {
233 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
234 "sap", "description", "url", "email", "phone",
235 "proto", "rtcp-mux", "caching", "key", "salt",
239 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
240 static int Del ( sout_stream_t *, sout_stream_id_t * );
241 static int Send( sout_stream_t *, sout_stream_id_t *,
243 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
244 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
245 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
248 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
249 static void* ThreadSend( vlc_object_t *p_this );
250 static void *rtp_listen_thread( void * );
252 static void SDPHandleUrl( sout_stream_t *, const char * );
254 static int SapSetup( sout_stream_t *p_stream );
255 static int FileSetup( sout_stream_t *p_stream );
256 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t * );
258 struct sout_stream_sys_t
262 vlc_mutex_t lock_sdp;
269 session_descriptor_t *p_session;
272 httpd_host_t *p_httpd_host;
273 httpd_file_t *p_httpd_file;
278 /* RTSP NPT and timestamp computations */
279 mtime_t i_npt_zero; /* when NPT=0 packet is sent */
280 int64_t i_pts_zero; /* predicts PTS of NPT=0 packet */
281 int64_t i_pts_offset; /* matches actual PTS to prediction */
285 char *psz_destination;
286 uint32_t payload_bitmap;
288 uint16_t i_port_audio;
289 uint16_t i_port_video;
295 /* in case we do TS/PS over rtp */
297 sout_access_out_t *p_grab;
303 sout_stream_id_t **es;
306 typedef int (*pf_rtp_packetizer_t)( sout_stream_id_t *, block_t * );
308 typedef struct rtp_sink_t
314 struct sout_stream_id_t
318 sout_stream_t *p_stream;
321 uint8_t i_payload_type;
323 uint32_t i_ts_offset;
327 uint16_t i_seq_sent_next;
338 /* Packetizer specific fields */
341 srtp_session_t *srtp;
343 pf_rtp_packetizer_t pf_packetize;
346 vlc_mutex_t lock_sink;
349 rtsp_stream_id_t *rtsp_id;
355 block_fifo_t *p_fifo;
359 /*****************************************************************************
361 *****************************************************************************/
362 static int Open( vlc_object_t *p_this )
364 sout_stream_t *p_stream = (sout_stream_t*)p_this;
365 sout_instance_t *p_sout = p_stream->p_sout;
366 sout_stream_sys_t *p_sys = NULL;
367 config_chain_t *p_cfg = NULL;
371 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
372 ppsz_sout_options, p_stream->p_cfg );
374 p_sys = malloc( sizeof( sout_stream_sys_t ) );
378 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
380 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
381 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
382 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
383 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
385 if( p_sys->i_port_audio && p_sys->i_port_video == p_sys->i_port_audio )
387 msg_Err( p_stream, "audio and video RTP port must be distinct" );
388 free( p_sys->psz_destination );
393 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
395 if( !strcmp( p_cfg->psz_name, "sdp" )
396 && ( p_cfg->psz_value != NULL )
397 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
405 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
408 if( !strncasecmp( psz, "rtsp:", 5 ) )
414 /* Transport protocol */
415 p_sys->proto = IPPROTO_UDP;
416 psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
418 if ((psz == NULL) || !strcasecmp (psz, "udp"))
419 (void)0; /* default */
421 if (!strcasecmp (psz, "dccp"))
423 p_sys->proto = IPPROTO_DCCP;
424 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
428 if (!strcasecmp (psz, "sctp"))
430 p_sys->proto = IPPROTO_TCP;
431 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
436 if (!strcasecmp (psz, "tcp"))
438 p_sys->proto = IPPROTO_TCP;
439 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
443 if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
444 p_sys->proto = IPPROTO_UDPLITE;
446 msg_Warn (p_this, "unknown or unsupported transport protocol \"%s\"",
449 var_Create (p_this, "dccp-service", VLC_VAR_STRING);
451 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
453 msg_Err( p_stream, "missing destination and not in RTSP mode" );
458 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
459 if( p_sys->i_ttl == -1 )
461 /* Normally, we should let the default hop limit up to the core,
462 * but we have to know it to build our SDP properly, which is why
463 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
465 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
468 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
470 /* NPT=0 time will be determined when we packetize the first packet
471 * (of any ES). But we want to be able to report rtptime in RTSP
472 * without waiting. So until then, we use an arbitrary reference
473 * PTS for timestamp computations, and then actual PTS will catch
474 * up using offsets. */
475 p_sys->i_npt_zero = VLC_TS_INVALID;
476 p_sys->i_pts_zero = mdate(); /* arbitrary value, could probably be
478 p_sys->payload_bitmap = 0;
482 p_sys->psz_sdp = NULL;
484 p_sys->b_export_sap = false;
485 p_sys->p_session = NULL;
486 p_sys->psz_sdp_file = NULL;
488 p_sys->p_httpd_host = NULL;
489 p_sys->p_httpd_file = NULL;
491 p_stream->p_sys = p_sys;
493 vlc_mutex_init( &p_sys->lock_sdp );
494 vlc_mutex_init( &p_sys->lock_ts );
495 vlc_mutex_init( &p_sys->lock_es );
497 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
500 sout_stream_id_t *id;
502 /* Check muxer type */
503 if( strncasecmp( psz, "ps", 2 )
504 && strncasecmp( psz, "mpeg1", 5 )
505 && strncasecmp( psz, "ts", 2 ) )
507 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
509 vlc_mutex_destroy( &p_sys->lock_sdp );
510 vlc_mutex_destroy( &p_sys->lock_es );
511 free( p_sys->psz_destination );
516 p_sys->p_grab = GrabberCreate( p_stream );
517 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
520 if( p_sys->p_mux == NULL )
522 msg_Err( p_stream, "cannot create muxer" );
523 sout_AccessOutDelete( p_sys->p_grab );
524 vlc_mutex_destroy( &p_sys->lock_sdp );
525 vlc_mutex_destroy( &p_sys->lock_es );
526 free( p_sys->psz_destination );
531 id = Add( p_stream, NULL );
534 sout_MuxDelete( p_sys->p_mux );
535 sout_AccessOutDelete( p_sys->p_grab );
536 vlc_mutex_destroy( &p_sys->lock_sdp );
537 vlc_mutex_destroy( &p_sys->lock_es );
538 free( p_sys->psz_destination );
543 p_sys->packet = NULL;
545 p_stream->pf_add = MuxAdd;
546 p_stream->pf_del = MuxDel;
547 p_stream->pf_send = MuxSend;
552 p_sys->p_grab = NULL;
554 p_stream->pf_add = Add;
555 p_stream->pf_del = Del;
556 p_stream->pf_send = Send;
559 if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
560 SDPHandleUrl( p_stream, "sap" );
562 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
565 config_chain_t *p_cfg;
567 SDPHandleUrl( p_stream, psz );
569 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
571 if( !strcmp( p_cfg->psz_name, "sdp" ) )
573 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
576 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
577 if( !strcmp( p_cfg->psz_value, psz ) )
580 SDPHandleUrl( p_stream, p_cfg->psz_value );
586 /* update p_sout->i_out_pace_nocontrol */
587 p_stream->p_sout->i_out_pace_nocontrol++;
592 /*****************************************************************************
594 *****************************************************************************/
595 static void Close( vlc_object_t * p_this )
597 sout_stream_t *p_stream = (sout_stream_t*)p_this;
598 sout_stream_sys_t *p_sys = p_stream->p_sys;
600 /* update p_sout->i_out_pace_nocontrol */
601 p_stream->p_sout->i_out_pace_nocontrol--;
605 assert( p_sys->i_es == 1 );
607 sout_MuxDelete( p_sys->p_mux );
608 Del( p_stream, p_sys->es[0] );
609 sout_AccessOutDelete( p_sys->p_grab );
613 block_Release( p_sys->packet );
615 if( p_sys->b_export_sap )
618 SapSetup( p_stream );
622 if( p_sys->rtsp != NULL )
623 RtspUnsetup( p_sys->rtsp );
625 vlc_mutex_destroy( &p_sys->lock_sdp );
626 vlc_mutex_destroy( &p_sys->lock_ts );
627 vlc_mutex_destroy( &p_sys->lock_es );
629 if( p_sys->p_httpd_file )
630 httpd_FileDelete( p_sys->p_httpd_file );
632 if( p_sys->p_httpd_host )
633 httpd_HostDelete( p_sys->p_httpd_host );
635 free( p_sys->psz_sdp );
637 if( p_sys->psz_sdp_file != NULL )
640 unlink( p_sys->psz_sdp_file );
642 free( p_sys->psz_sdp_file );
644 free( p_sys->psz_destination );
648 /*****************************************************************************
650 *****************************************************************************/
651 static void SDPHandleUrl( sout_stream_t *p_stream, const char *psz_url )
653 sout_stream_sys_t *p_sys = p_stream->p_sys;
656 vlc_UrlParse( &url, psz_url, 0 );
657 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
659 if( p_sys->p_httpd_file )
661 msg_Err( p_stream, "you can use sdp=http:// only once" );
665 if( HttpSetup( p_stream, &url ) )
667 msg_Err( p_stream, "cannot export SDP as HTTP" );
670 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
672 if( p_sys->rtsp != NULL )
674 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
678 /* FIXME test if destination is multicast or no destination at all */
679 p_sys->rtsp = RtspSetup( p_stream, &url );
680 if( p_sys->rtsp == NULL )
681 msg_Err( p_stream, "cannot export SDP as RTSP" );
683 if( p_sys->p_mux != NULL )
685 sout_stream_id_t *id = p_sys->es[0];
686 id->rtsp_id = RtspAddId( p_sys->rtsp, id, GetDWBE( id->ssrc ),
687 p_sys->psz_destination, p_sys->i_ttl,
688 id->i_port, id->i_port + 1 );
691 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
692 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
694 p_sys->b_export_sap = true;
695 SapSetup( p_stream );
697 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
699 if( p_sys->psz_sdp_file != NULL )
701 msg_Err( p_stream, "you can use sdp=file:// only once" );
704 psz_url = &psz_url[5];
705 if( psz_url[0] == '/' && psz_url[1] == '/' )
707 p_sys->psz_sdp_file = strdup( psz_url );
708 if( p_sys->psz_sdp_file == NULL )
710 decode_URI( p_sys->psz_sdp_file ); /* FIXME? */
711 FileSetup( p_stream );
715 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
720 vlc_UrlClean( &url );
723 /*****************************************************************************
725 *****************************************************************************/
727 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
729 const sout_stream_sys_t *p_sys = p_stream->p_sys;
731 struct sockaddr_storage dst;
735 * When we have a fixed destination (typically when we do multicast),
736 * we need to put the actual port numbers in the SDP.
737 * When there is no fixed destination, we only support RTSP unicast
738 * on-demand setup, so we should rather let the clients decide which ports
740 * When there is both a fixed destination and RTSP unicast, we need to
741 * put port numbers used by the fixed destination, otherwise the SDP would
742 * become totally incorrect for multicast use. It should be noted that
743 * port numbers from SDP with RTSP are only "recommendation" from the
744 * server to the clients (per RFC2326), so only broken clients will fail
745 * to handle this properly. There is no solution but to use two differents
746 * output chain with two different RTSP URLs if you need to handle this
751 if( p_sys->psz_destination != NULL )
755 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
756 dstlen = sizeof( dst );
757 if( p_sys->es[0]->listen.fd != NULL )
758 getsockname( p_sys->es[0]->listen.fd[0],
759 (struct sockaddr *)&dst, &dstlen );
761 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
762 (struct sockaddr *)&dst, &dstlen );
768 /* Dummy destination address for RTSP */
769 memset (&dst, 0, sizeof( struct sockaddr_in ) );
770 dst.ss_family = AF_INET;
774 dstlen = sizeof( struct sockaddr_in );
777 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
778 NULL, 0, (struct sockaddr *)&dst, dstlen );
779 if( psz_sdp == NULL )
782 /* TODO: a=source-filter */
783 if( p_sys->rtcp_mux )
784 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
786 if( rtsp_url != NULL )
787 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
789 /* FIXME: locking?! */
790 for( i = 0; i < p_sys->i_es; i++ )
792 sout_stream_id_t *id = p_sys->es[i];
793 const char *mime_major; /* major MIME type */
794 const char *proto = "RTP/AVP"; /* protocol */
799 mime_major = "video";
802 mime_major = "audio";
811 if( rtsp_url == NULL )
813 switch( p_sys->proto )
818 proto = "TCP/RTP/AVP";
821 proto = "DCCP/RTP/AVP";
823 case IPPROTO_UDPLITE:
828 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
829 id->i_payload_type, false, id->i_bitrate,
830 id->psz_enc, id->i_clock_rate, id->i_channels,
833 if( !p_sys->rtcp_mux && (id->i_port & 1) ) /* cf RFC4566 §5.14 */
834 sdp_AddAttribute ( &psz_sdp, "rtcp", "%u", id->i_port + 1 );
836 if( rtsp_url != NULL )
838 assert( strlen( rtsp_url ) > 0 );
839 bool addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
840 sdp_AddAttribute ( &psz_sdp, "control",
841 addslash ? "%s/trackID=%u" : "%strackID=%u",
846 if( id->listen.fd != NULL )
847 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
848 if( p_sys->proto == IPPROTO_DCCP )
849 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
850 "SC:RTP%c", toupper( mime_major[0] ) );
857 /*****************************************************************************
859 *****************************************************************************/
861 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
863 static const char hex[16] = "0123456789abcdef";
866 for( i = 0; i < i_data; i++ )
868 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
869 s[2*i+1] = hex[(p_data[i] )&0xf];
875 * Shrink the MTU down to a fixed packetization time (for audio).
878 rtp_set_ptime (sout_stream_id_t *id, unsigned ptime_ms, size_t bytes)
880 /* Samples per second */
881 size_t spl = (id->i_clock_rate - 1) * ptime_ms / 1000 + 1;
882 bytes *= id->i_channels;
885 if (spl < rtp_mtu (id)) /* MTU is big enough for ptime */
886 id->i_mtu = 12 + spl;
887 else /* MTU is too small for ptime, align to a sample boundary */
888 id->i_mtu = 12 + (((id->i_mtu - 12) / bytes) * bytes);
891 uint32_t rtp_compute_ts( const sout_stream_id_t *id, int64_t i_pts )
893 /* NOTE: this plays nice with offsets because the calculations are
895 return i_pts * (int64_t)id->i_clock_rate / CLOCK_FREQ;
898 /** Add an ES as a new RTP stream */
899 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
901 /* NOTE: As a special case, if we use a non-RTP
902 * mux (TS/PS), then p_fmt is NULL. */
903 sout_stream_sys_t *p_sys = p_stream->p_sys;
904 sout_stream_id_t *id;
907 if (0xffffffff == p_sys->payload_bitmap)
909 msg_Err (p_stream, "too many RTP elementary streams");
913 /* Choose the port */
918 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
919 i_port = p_sys->i_port_audio;
921 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
922 i_port = p_sys->i_port_video;
924 /* We do not need the ES lock (p_sys->lock_es) here, because this is the
925 * only one thread that can *modify* the ES table. The ES lock protects
926 * the other threads from our modifications (TAB_APPEND, TAB_REMOVE). */
927 for (int i = 0; i_port && (i < p_sys->i_es); i++)
928 if (i_port == p_sys->es[i]->i_port)
929 i_port = 0; /* Port already in use! */
930 for (uint16_t p = p_sys->i_port; i_port == 0; p += 2)
934 msg_Err (p_stream, "too many RTP elementary streams");
938 for (int i = 0; i_port && (i < p_sys->i_es); i++)
939 if (p == p_sys->es[i]->i_port)
943 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
946 vlc_object_attach( id, p_stream );
948 id->p_stream = p_stream;
950 /* Look for free dymanic payload type */
951 id->i_payload_type = 96;
952 while (p_sys->payload_bitmap & (1 << (id->i_payload_type - 96)))
953 id->i_payload_type++;
954 assert (id->i_payload_type < 128);
956 vlc_rand_bytes (&id->i_sequence, sizeof (id->i_sequence));
957 vlc_rand_bytes (id->ssrc, sizeof (id->ssrc));
959 id->i_seq_sent_next = id->i_sequence;
963 id->i_clock_rate = 90000; /* most common case for video */
968 id->i_cat = p_fmt->i_cat;
969 if( p_fmt->i_cat == AUDIO_ES )
971 id->i_clock_rate = p_fmt->audio.i_rate;
972 id->i_channels = p_fmt->audio.i_channels;
974 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
978 id->i_cat = VIDEO_ES;
982 id->i_mtu = config_GetInt( p_stream, "mtu" );
983 if( id->i_mtu <= 12 + 16 )
984 id->i_mtu = 576 - 20 - 8; /* pessimistic */
985 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
987 id->pf_packetize = NULL;
992 char *key = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"key");
995 id->srtp = srtp_create (SRTP_ENCR_AES_CM, SRTP_AUTH_HMAC_SHA1, 10,
996 SRTP_PRF_AES_CM, SRTP_RCC_MODE1);
997 if (id->srtp == NULL)
1003 char *salt = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"salt");
1004 errno = srtp_setkeystring (id->srtp, key, salt ? salt : "");
1009 msg_Err (p_stream, "bad SRTP key/salt combination (%m)");
1012 id->i_sequence = 0; /* FIXME: awful hack for libvlc_srtp */
1016 vlc_mutex_init( &id->lock_sink );
1021 id->listen.fd = NULL;
1024 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
1026 if( p_sys->psz_destination != NULL )
1027 switch( p_sys->proto )
1034 case VIDEO_ES: code = "RTPV"; break;
1035 case AUDIO_ES: code = "RTPARTPV"; break;
1036 case SPU_ES: code = "RTPTRTPV"; break;
1037 default: code = "RTPORTPV"; break;
1039 var_SetString (p_stream, "dccp-service", code);
1040 } /* fall through */
1042 id->listen.fd = net_Listen( VLC_OBJECT(p_stream),
1043 p_sys->psz_destination, i_port,
1045 if( id->listen.fd == NULL )
1047 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
1050 if( vlc_clone( &id->listen.thread, rtp_listen_thread, id,
1051 VLC_THREAD_PRIORITY_LOW ) )
1053 net_ListenClose( id->listen.fd );
1054 id->listen.fd = NULL;
1061 int ttl = (p_sys->i_ttl >= 0) ? p_sys->i_ttl : -1;
1062 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
1063 i_port, ttl, p_sys->proto );
1066 msg_Err( p_stream, "cannot create RTP socket" );
1069 /* Ignore any unexpected incoming packet (including RTCP-RR
1070 * packets in case of rtcp-mux) */
1071 setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &(int){ 0 },
1073 rtp_add_sink( id, fd, p_sys->rtcp_mux, NULL );
1079 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
1081 if( psz == NULL ) /* Uho! */
1084 if( strncmp( psz, "ts", 2 ) == 0 )
1086 id->i_payload_type = 33;
1087 id->psz_enc = "MP2T";
1091 id->psz_enc = "MP2P";
1096 switch( p_fmt->i_codec )
1098 case VLC_CODEC_MULAW:
1099 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
1100 id->i_payload_type = 0;
1101 id->psz_enc = "PCMU";
1102 id->pf_packetize = rtp_packetize_split;
1103 rtp_set_ptime (id, 20, 1);
1105 case VLC_CODEC_ALAW:
1106 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
1107 id->i_payload_type = 8;
1108 id->psz_enc = "PCMA";
1109 id->pf_packetize = rtp_packetize_split;
1110 rtp_set_ptime (id, 20, 1);
1112 case VLC_CODEC_S16B:
1113 case VLC_CODEC_S16L:
1114 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
1116 id->i_payload_type = 11;
1118 else if( p_fmt->audio.i_channels == 2 &&
1119 p_fmt->audio.i_rate == 44100 )
1121 id->i_payload_type = 10;
1123 id->psz_enc = "L16";
1124 if( p_fmt->i_codec == VLC_CODEC_S16B )
1125 id->pf_packetize = rtp_packetize_split;
1127 id->pf_packetize = rtp_packetize_swab;
1128 rtp_set_ptime (id, 20, 2);
1132 id->pf_packetize = rtp_packetize_split;
1133 rtp_set_ptime (id, 20, 1);
1135 case VLC_CODEC_MPGA:
1136 id->i_payload_type = 14;
1137 id->psz_enc = "MPA";
1138 id->i_clock_rate = 90000; /* not 44100 */
1139 id->pf_packetize = rtp_packetize_mpa;
1141 case VLC_CODEC_MPGV:
1142 id->i_payload_type = 32;
1143 id->psz_enc = "MPV";
1144 id->pf_packetize = rtp_packetize_mpv;
1146 case VLC_CODEC_ADPCM_G726:
1147 switch( p_fmt->i_bitrate / 1000 )
1150 id->psz_enc = "G726-16";
1151 id->pf_packetize = rtp_packetize_g726_16;
1154 id->psz_enc = "G726-24";
1155 id->pf_packetize = rtp_packetize_g726_24;
1158 id->psz_enc = "G726-32";
1159 id->pf_packetize = rtp_packetize_g726_32;
1162 id->psz_enc = "G726-40";
1163 id->pf_packetize = rtp_packetize_g726_40;
1166 msg_Err( p_stream, "cannot add this stream (unsupported "
1167 "G.726 bit rate: %u)", p_fmt->i_bitrate );
1172 id->psz_enc = "ac3";
1173 id->pf_packetize = rtp_packetize_ac3;
1175 case VLC_CODEC_H263:
1176 id->psz_enc = "H263-1998";
1177 id->pf_packetize = rtp_packetize_h263;
1179 case VLC_CODEC_H264:
1180 id->psz_enc = "H264";
1181 id->pf_packetize = rtp_packetize_h264;
1182 id->psz_fmtp = NULL;
1184 if( p_fmt->i_extra > 0 )
1186 uint8_t *p_buffer = p_fmt->p_extra;
1187 int i_buffer = p_fmt->i_extra;
1188 char *p_64_sps = NULL;
1189 char *p_64_pps = NULL;
1192 while( i_buffer > 4 &&
1193 p_buffer[0] == 0 && p_buffer[1] == 0 &&
1194 p_buffer[2] == 0 && p_buffer[3] == 1 )
1196 const int i_nal_type = p_buffer[4]&0x1f;
1200 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1203 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1205 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1207 /* we found another startcode */
1212 if( i_nal_type == 7 )
1214 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1215 sprintf_hexa( hexa, &p_buffer[5], 3 );
1217 else if( i_nal_type == 8 )
1219 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1225 if( p_64_sps && p_64_pps &&
1226 ( asprintf( &id->psz_fmtp,
1227 "packetization-mode=1;profile-level-id=%s;"
1228 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1229 p_64_pps ) == -1 ) )
1230 id->psz_fmtp = NULL;
1235 id->psz_fmtp = strdup( "packetization-mode=1" );
1238 case VLC_CODEC_MP4V:
1240 id->psz_enc = "MP4V-ES";
1241 id->pf_packetize = rtp_packetize_split;
1242 if( p_fmt->i_extra > 0 )
1244 char hexa[2*p_fmt->i_extra +1];
1245 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1246 if( asprintf( &id->psz_fmtp,
1247 "profile-level-id=3; config=%s;", hexa ) == -1 )
1248 id->psz_fmtp = NULL;
1252 case VLC_CODEC_MP4A:
1256 char hexa[2*p_fmt->i_extra +1];
1258 id->psz_enc = "mpeg4-generic";
1259 id->pf_packetize = rtp_packetize_mp4a;
1260 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1261 if( asprintf( &id->psz_fmtp,
1262 "streamtype=5; profile-level-id=15; "
1263 "mode=AAC-hbr; config=%s; SizeLength=13; "
1264 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1266 id->psz_fmtp = NULL;
1272 unsigned char config[6];
1273 unsigned int aacsrates[15] = {
1274 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1275 16000, 12000, 11025, 8000, 7350, 0, 0 };
1277 for( i = 0; i < 15; i++ )
1278 if( p_fmt->audio.i_rate == aacsrates[i] )
1284 config[3]=p_fmt->audio.i_channels<<4;
1288 id->psz_enc = "MP4A-LATM";
1289 id->pf_packetize = rtp_packetize_mp4a_latm;
1290 sprintf_hexa( hexa, config, 6 );
1291 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1292 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1293 id->psz_fmtp = NULL;
1297 case VLC_CODEC_AMR_NB:
1298 id->psz_enc = "AMR";
1299 id->psz_fmtp = strdup( "octet-align=1" );
1300 id->pf_packetize = rtp_packetize_amr;
1302 case VLC_CODEC_AMR_WB:
1303 id->psz_enc = "AMR-WB";
1304 id->psz_fmtp = strdup( "octet-align=1" );
1305 id->pf_packetize = rtp_packetize_amr;
1307 case VLC_CODEC_SPEEX:
1308 id->psz_enc = "SPEEX";
1309 id->pf_packetize = rtp_packetize_spx;
1311 case VLC_CODEC_ITU_T140:
1312 id->psz_enc = "t140" ;
1313 id->i_clock_rate = 1000;
1314 id->pf_packetize = rtp_packetize_t140;
1318 msg_Err( p_stream, "cannot add this stream (unsupported "
1319 "codec: %4.4s)", (char*)&p_fmt->i_codec );
1322 if (id->i_payload_type >= 96)
1323 /* Mark dynamic payload type in use */
1324 p_sys->payload_bitmap |= 1 << (id->i_payload_type - 96);
1326 #if 0 /* No payload formats sets this at the moment */
1329 cscov += 8 /* UDP */ + 12 /* RTP */;
1331 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1334 vlc_mutex_lock( &p_sys->lock_ts );
1335 id->b_ts_init = ( p_sys->i_npt_zero != VLC_TS_INVALID );
1336 vlc_mutex_unlock( &p_sys->lock_ts );
1338 id->i_ts_offset = rtp_compute_ts( id, p_sys->i_pts_offset );
1340 if( p_sys->rtsp != NULL )
1341 id->rtsp_id = RtspAddId( p_sys->rtsp, id,
1342 GetDWBE( id->ssrc ),
1343 p_sys->psz_destination,
1344 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1346 id->p_fifo = block_FifoNew();
1347 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1348 VLC_THREAD_PRIORITY_HIGHEST ) )
1351 /* Update p_sys context */
1352 vlc_mutex_lock( &p_sys->lock_es );
1353 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1354 vlc_mutex_unlock( &p_sys->lock_es );
1356 psz_sdp = SDPGenerate( p_stream, NULL );
1358 vlc_mutex_lock( &p_sys->lock_sdp );
1359 free( p_sys->psz_sdp );
1360 p_sys->psz_sdp = psz_sdp;
1361 vlc_mutex_unlock( &p_sys->lock_sdp );
1363 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1365 /* Update SDP (sap/file) */
1366 if( p_sys->b_export_sap ) SapSetup( p_stream );
1367 if( p_sys->psz_sdp_file != NULL ) FileSetup( p_stream );
1372 Del( p_stream, id );
1376 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1378 sout_stream_sys_t *p_sys = p_stream->p_sys;
1380 if( id->p_fifo != NULL )
1382 vlc_object_kill( id );
1383 vlc_thread_join( id );
1384 block_FifoRelease( id->p_fifo );
1387 vlc_mutex_lock( &p_sys->lock_es );
1388 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1389 vlc_mutex_unlock( &p_sys->lock_es );
1391 /* Release dynamic payload type */
1392 if (id->i_payload_type >= 96)
1393 p_sys->payload_bitmap &= ~(1 << (id->i_payload_type - 96));
1395 free( id->psz_fmtp );
1398 RtspDelId( p_sys->rtsp, id->rtsp_id );
1400 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1401 if( id->listen.fd != NULL )
1403 vlc_cancel( id->listen.thread );
1404 vlc_join( id->listen.thread, NULL );
1405 net_ListenClose( id->listen.fd );
1408 if( id->srtp != NULL )
1409 srtp_destroy( id->srtp );
1412 vlc_mutex_destroy( &id->lock_sink );
1414 /* Update SDP (sap/file) */
1415 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1416 if( p_sys->psz_sdp_file != NULL ) FileSetup( p_stream );
1418 vlc_object_detach( id );
1419 vlc_object_release( id );
1423 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1428 assert( p_stream->p_sys->p_mux == NULL );
1431 while( p_buffer != NULL )
1433 p_next = p_buffer->p_next;
1434 if( id->pf_packetize( id, p_buffer ) )
1437 block_Release( p_buffer );
1443 /****************************************************************************
1445 ****************************************************************************/
1446 static int SapSetup( sout_stream_t *p_stream )
1448 sout_stream_sys_t *p_sys = p_stream->p_sys;
1449 sout_instance_t *p_sout = p_stream->p_sout;
1451 /* Remove the previous session */
1452 if( p_sys->p_session != NULL)
1454 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1455 p_sys->p_session = NULL;
1458 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1460 announce_method_t *p_method = sout_SAPMethod();
1461 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1463 p_sys->psz_destination,
1465 sout_MethodRelease( p_method );
1471 /****************************************************************************
1473 ****************************************************************************/
1474 static int FileSetup( sout_stream_t *p_stream )
1476 sout_stream_sys_t *p_sys = p_stream->p_sys;
1479 if( p_sys->psz_sdp == NULL )
1480 return VLC_EGENERIC; /* too early */
1482 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1484 msg_Err( p_stream, "cannot open file '%s' (%m)",
1485 p_sys->psz_sdp_file );
1486 return VLC_EGENERIC;
1489 fputs( p_sys->psz_sdp, f );
1495 /****************************************************************************
1497 ****************************************************************************/
1498 static int HttpCallback( httpd_file_sys_t *p_args,
1499 httpd_file_t *, uint8_t *p_request,
1500 uint8_t **pp_data, int *pi_data );
1502 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t *url)
1504 sout_stream_sys_t *p_sys = p_stream->p_sys;
1506 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1507 url->i_port > 0 ? url->i_port : 80 );
1508 if( p_sys->p_httpd_host )
1510 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1511 url->psz_path ? url->psz_path : "/",
1514 HttpCallback, (void*)p_sys );
1516 if( p_sys->p_httpd_file == NULL )
1518 return VLC_EGENERIC;
1523 static int HttpCallback( httpd_file_sys_t *p_args,
1524 httpd_file_t *f, uint8_t *p_request,
1525 uint8_t **pp_data, int *pi_data )
1527 VLC_UNUSED(f); VLC_UNUSED(p_request);
1528 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1530 vlc_mutex_lock( &p_sys->lock_sdp );
1531 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1533 *pi_data = strlen( p_sys->psz_sdp );
1534 *pp_data = malloc( *pi_data );
1535 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1542 vlc_mutex_unlock( &p_sys->lock_sdp );
1547 /****************************************************************************
1549 ****************************************************************************/
1550 static void* ThreadSend( vlc_object_t *p_this )
1553 # define ECONNREFUSED WSAECONNREFUSED
1554 # define ENOPROTOOPT WSAENOPROTOOPT
1555 # define EHOSTUNREACH WSAEHOSTUNREACH
1556 # define ENETUNREACH WSAENETUNREACH
1557 # define ENETDOWN WSAENETDOWN
1558 # define ENOBUFS WSAENOBUFS
1559 # define EAGAIN WSAEWOULDBLOCK
1560 # define EWOULDBLOCK WSAEWOULDBLOCK
1562 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1563 unsigned i_caching = id->i_caching;
1567 block_t *out = block_FifoGet( id->p_fifo );
1568 block_cleanup_push (out);
1572 { /* FIXME: this is awfully inefficient */
1573 size_t len = out->i_buffer;
1574 out = block_Realloc( out, 0, len + 10 );
1575 out->i_buffer = len;
1577 int canc = vlc_savecancel ();
1578 int val = srtp_send( id->srtp, out->p_buffer, &len, len + 10 );
1579 vlc_restorecancel (canc);
1583 msg_Dbg( id, "SRTP sending error: %m" );
1584 block_Release( out );
1588 out->i_buffer = len;
1592 mwait (out->i_dts + i_caching);
1597 ssize_t len = out->i_buffer;
1598 int canc = vlc_savecancel ();
1600 vlc_mutex_lock( &id->lock_sink );
1601 unsigned deadc = 0; /* How many dead sockets? */
1602 int deadv[id->sinkc]; /* Dead sockets list */
1604 for( int i = 0; i < id->sinkc; i++ )
1607 if( !id->srtp ) /* FIXME: SRTCP support */
1609 SendRTCP( id->sinkv[i].rtcp, out );
1611 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1615 /* Soft errors (e.g. ICMP): */
1616 case ECONNREFUSED: /* Port unreachable */
1619 case EPROTO: /* Protocol unreachable */
1621 case EHOSTUNREACH: /* Host unreachable */
1622 case ENETUNREACH: /* Network unreachable */
1623 case ENETDOWN: /* Entire network down */
1624 send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 );
1625 /* Transient congestion: */
1626 case ENOMEM: /* out of socket buffers */
1629 #if (EAGAIN != EWOULDBLOCK)
1635 deadv[deadc++] = id->sinkv[i].rtp_fd;
1637 id->i_seq_sent_next = ntohs(((uint16_t *) out->p_buffer)[1]) + 1;
1638 vlc_mutex_unlock( &id->lock_sink );
1639 block_Release( out );
1641 for( unsigned i = 0; i < deadc; i++ )
1643 msg_Dbg( id, "removing socket %d", deadv[i] );
1644 rtp_del_sink( id, deadv[i] );
1646 vlc_restorecancel (canc);
1652 /* This thread dequeues incoming connections (DCCP streaming) */
1653 static void *rtp_listen_thread( void *data )
1655 sout_stream_id_t *id = data;
1657 assert( id->listen.fd != NULL );
1661 int fd = net_Accept( id, id->listen.fd );
1664 int canc = vlc_savecancel( );
1665 rtp_add_sink( id, fd, true, NULL );
1666 vlc_restorecancel( canc );
1673 int rtp_add_sink( sout_stream_id_t *id, int fd, bool rtcp_mux, uint16_t *seq )
1675 rtp_sink_t sink = { fd, NULL };
1676 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1678 if( sink.rtcp == NULL )
1679 msg_Err( id, "RTCP failed!" );
1681 vlc_mutex_lock( &id->lock_sink );
1682 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1684 *seq = id->i_seq_sent_next;
1685 vlc_mutex_unlock( &id->lock_sink );
1689 void rtp_del_sink( sout_stream_id_t *id, int fd )
1691 rtp_sink_t sink = { fd, NULL };
1693 /* NOTE: must be safe to use if fd is not included */
1694 vlc_mutex_lock( &id->lock_sink );
1695 for( int i = 0; i < id->sinkc; i++ )
1697 if (id->sinkv[i].rtp_fd == fd)
1699 sink = id->sinkv[i];
1700 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1704 vlc_mutex_unlock( &id->lock_sink );
1706 CloseRTCP( sink.rtcp );
1707 net_Close( sink.rtp_fd );
1710 uint16_t rtp_get_seq( sout_stream_id_t *id )
1712 /* This will return values for the next packet. */
1715 vlc_mutex_lock( &id->lock_sink );
1716 seq = id->i_seq_sent_next;
1717 vlc_mutex_unlock( &id->lock_sink );
1722 /* Return a timestamp corresponding to packets being sent now, and that
1723 * can be passed to rtp_compute_ts() to get rtptime values for each ES. */
1724 int64_t rtp_get_ts( const sout_stream_t *p_stream )
1726 sout_stream_sys_t *p_sys = p_stream->p_sys;
1728 vlc_mutex_lock( &p_sys->lock_ts );
1729 i_npt_zero = p_sys->i_npt_zero;
1730 vlc_mutex_unlock( &p_sys->lock_ts );
1732 if( i_npt_zero == VLC_TS_INVALID )
1733 return p_sys->i_pts_zero;
1735 mtime_t now = mdate();
1736 if( now < i_npt_zero )
1737 return p_sys->i_pts_zero;
1739 return p_sys->i_pts_zero + (now - i_npt_zero);
1742 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1743 int b_marker, int64_t i_pts )
1745 if( !id->b_ts_init )
1747 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1748 vlc_mutex_lock( &p_sys->lock_ts );
1749 if( p_sys->i_npt_zero == VLC_TS_INVALID )
1751 /* This is the first packet of any ES. We initialize the
1752 * NPT=0 time reference, and the offset to match the
1753 * arbitrary PTS reference. */
1754 p_sys->i_npt_zero = i_pts + id->i_caching;
1755 p_sys->i_pts_offset = p_sys->i_pts_zero - i_pts;
1757 vlc_mutex_unlock( &p_sys->lock_ts );
1759 /* And in any case this is the first packet of this ES, so we
1760 * initialize the offset for this ES. */
1761 id->i_ts_offset = rtp_compute_ts( id, p_sys->i_pts_offset );
1762 id->b_ts_init = true;
1765 uint32_t i_timestamp = rtp_compute_ts( id, i_pts ) + id->i_ts_offset;
1767 out->p_buffer[0] = 0x80;
1768 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1769 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1770 out->p_buffer[3] = ( id->i_sequence )&0xff;
1771 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1772 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1773 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1774 out->p_buffer[7] = ( i_timestamp )&0xff;
1776 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1782 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1784 block_FifoPut( id->p_fifo, out );
1788 * @return configured max RTP payload size (including payload type-specific
1789 * headers, excluding RTP and transport headers)
1791 size_t rtp_mtu (const sout_stream_id_t *id)
1793 return id->i_mtu - 12;
1796 /*****************************************************************************
1798 *****************************************************************************/
1800 /** Add an ES to a non-RTP muxed stream */
1801 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1803 sout_input_t *p_input;
1804 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1805 assert( p_mux != NULL );
1807 p_input = sout_MuxAddStream( p_mux, p_fmt );
1808 if( p_input == NULL )
1810 msg_Err( p_stream, "cannot add this stream to the muxer" );
1814 return (sout_stream_id_t *)p_input;
1818 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1821 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1822 assert( p_mux != NULL );
1824 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1829 /** Remove an ES from a non-RTP muxed stream */
1830 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1832 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1833 assert( p_mux != NULL );
1835 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1840 static ssize_t AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1841 const block_t *p_buffer )
1843 sout_stream_sys_t *p_sys = p_stream->p_sys;
1844 sout_stream_id_t *id = p_sys->es[0];
1846 int64_t i_dts = p_buffer->i_dts;
1848 uint8_t *p_data = p_buffer->p_buffer;
1849 size_t i_data = p_buffer->i_buffer;
1850 size_t i_max = id->i_mtu - 12;
1852 size_t i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1858 /* output complete packet */
1859 if( p_sys->packet &&
1860 p_sys->packet->i_buffer + i_data > i_max )
1862 rtp_packetize_send( id, p_sys->packet );
1863 p_sys->packet = NULL;
1866 if( p_sys->packet == NULL )
1868 /* allocate a new packet */
1869 p_sys->packet = block_New( p_stream, id->i_mtu );
1870 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1871 p_sys->packet->i_dts = i_dts;
1872 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1873 i_dts += p_sys->packet->i_length;
1876 i_size = __MIN( i_data,
1877 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1879 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1882 p_sys->packet->i_buffer += i_size;
1891 static ssize_t AccessOutGrabberWrite( sout_access_out_t *p_access,
1894 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1900 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1902 p_next = p_buffer->p_next;
1903 block_Release( p_buffer );
1911 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1913 sout_access_out_t *p_grab;
1915 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1916 if( p_grab == NULL )
1919 p_grab->p_module = NULL;
1920 p_grab->psz_access = strdup( "grab" );
1921 p_grab->p_cfg = NULL;
1922 p_grab->psz_path = strdup( "" );
1923 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1924 p_grab->pf_seek = NULL;
1925 p_grab->pf_write = AccessOutGrabberWrite;
1926 vlc_object_attach( p_grab, p_stream );