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>
54 #ifdef HAVE_ARPA_INET_H
55 # include <arpa/inet.h>
57 #ifdef HAVE_LINUX_DCCP_H
58 # include <linux/dccp.h>
61 # define IPPROTO_DCCP 33
63 #ifndef IPPROTO_UDPLITE
64 # define IPPROTO_UDPLITE 136
71 /*****************************************************************************
73 *****************************************************************************/
75 #define DEST_TEXT N_("Destination")
76 #define DEST_LONGTEXT N_( \
77 "This is the output URL that will be used." )
78 #define SDP_TEXT N_("SDP")
79 #define SDP_LONGTEXT N_( \
80 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
81 "session will be made available. You must use an url: http://location to " \
82 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
83 "for the SDP to be announced via SAP." )
84 #define SAP_TEXT N_("SAP announcing")
85 #define SAP_LONGTEXT N_("Announce this session with SAP.")
86 #define MUX_TEXT N_("Muxer")
87 #define MUX_LONGTEXT N_( \
88 "This allows you to specify the muxer used for the streaming output. " \
89 "Default is to use no muxer (standard RTP stream)." )
91 #define NAME_TEXT N_("Session name")
92 #define NAME_LONGTEXT N_( \
93 "This is the name of the session that will be announced in the SDP " \
94 "(Session Descriptor)." )
95 #define DESC_TEXT N_("Session description")
96 #define DESC_LONGTEXT N_( \
97 "This allows you to give a short description with details about the stream, " \
98 "that will be announced in the SDP (Session Descriptor)." )
99 #define URL_TEXT N_("Session URL")
100 #define URL_LONGTEXT N_( \
101 "This allows you to give an URL with more details about the stream " \
102 "(often the website of the streaming organization), that will " \
103 "be announced in the SDP (Session Descriptor)." )
104 #define EMAIL_TEXT N_("Session email")
105 #define EMAIL_LONGTEXT N_( \
106 "This allows you to give a contact mail address for the stream, that will " \
107 "be announced in the SDP (Session Descriptor)." )
108 #define PHONE_TEXT N_("Session phone number")
109 #define PHONE_LONGTEXT N_( \
110 "This allows you to give a contact telephone number for the stream, that will " \
111 "be announced in the SDP (Session Descriptor)." )
113 #define PORT_TEXT N_("Port")
114 #define PORT_LONGTEXT N_( \
115 "This allows you to specify the base port for the RTP streaming." )
116 #define PORT_AUDIO_TEXT N_("Audio port")
117 #define PORT_AUDIO_LONGTEXT N_( \
118 "This allows you to specify the default audio port for the RTP streaming." )
119 #define PORT_VIDEO_TEXT N_("Video port")
120 #define PORT_VIDEO_LONGTEXT N_( \
121 "This allows you to specify the default video port for the RTP streaming." )
123 #define TTL_TEXT N_("Hop limit (TTL)")
124 #define TTL_LONGTEXT N_( \
125 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
126 "the multicast packets sent by the stream output (-1 = use operating " \
127 "system built-in default).")
129 #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
130 #define RTCP_MUX_LONGTEXT N_( \
131 "This sends and receives RTCP packet multiplexed over the same port " \
134 #define CACHING_TEXT N_("Caching value (ms)")
135 #define CACHING_LONGTEXT N_( \
136 "Default caching value for outbound RTP streams. This " \
137 "value should be set in milliseconds." )
139 #define PROTO_TEXT N_("Transport protocol")
140 #define PROTO_LONGTEXT N_( \
141 "This selects which transport protocol to use for RTP." )
143 #define SRTP_KEY_TEXT N_("SRTP key (hexadecimal)")
144 #define SRTP_KEY_LONGTEXT N_( \
145 "RTP packets will be integrity-protected and ciphered "\
146 "with this Secure RTP master shared secret key.")
148 #define SRTP_SALT_TEXT N_("SRTP salt (hexadecimal)")
149 #define SRTP_SALT_LONGTEXT N_( \
150 "Secure RTP requires a (non-secret) master salt value.")
152 static const char *const ppsz_protos[] = {
153 "dccp", "sctp", "tcp", "udp", "udplite",
156 static const char *const ppsz_protocols[] = {
157 "DCCP", "SCTP", "TCP", "UDP", "UDP-Lite",
160 #define RFC3016_TEXT N_("MP4A LATM")
161 #define RFC3016_LONGTEXT N_( \
162 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
164 static int Open ( vlc_object_t * );
165 static void Close( vlc_object_t * );
167 #define SOUT_CFG_PREFIX "sout-rtp-"
168 #define MAX_EMPTY_BLOCKS 200
171 set_shortname( N_("RTP"))
172 set_description( N_("RTP stream output") )
173 set_capability( "sout stream", 0 )
174 add_shortcut( "rtp" )
175 set_category( CAT_SOUT )
176 set_subcategory( SUBCAT_SOUT_STREAM )
178 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
179 DEST_LONGTEXT, true )
180 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
182 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
184 add_bool( SOUT_CFG_PREFIX "sap", false, NULL, SAP_TEXT, SAP_LONGTEXT,
187 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
188 NAME_LONGTEXT, true )
189 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
190 DESC_LONGTEXT, true )
191 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
193 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
194 EMAIL_LONGTEXT, true )
195 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
196 PHONE_LONGTEXT, true )
198 add_string( SOUT_CFG_PREFIX "proto", "udp", NULL, PROTO_TEXT,
199 PROTO_LONGTEXT, false )
200 change_string_list( ppsz_protos, ppsz_protocols, NULL )
201 add_integer( SOUT_CFG_PREFIX "port", 5004, NULL, PORT_TEXT,
202 PORT_LONGTEXT, true )
203 add_integer( SOUT_CFG_PREFIX "port-audio", 0, NULL, PORT_AUDIO_TEXT,
204 PORT_AUDIO_LONGTEXT, true )
205 add_integer( SOUT_CFG_PREFIX "port-video", 0, NULL, PORT_VIDEO_TEXT,
206 PORT_VIDEO_LONGTEXT, true )
208 add_integer( SOUT_CFG_PREFIX "ttl", -1, NULL, TTL_TEXT,
210 add_bool( SOUT_CFG_PREFIX "rtcp-mux", false, NULL,
211 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, false )
212 add_integer( SOUT_CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL,
213 CACHING_TEXT, CACHING_LONGTEXT, true )
216 add_string( SOUT_CFG_PREFIX "key", "", NULL,
217 SRTP_KEY_TEXT, SRTP_KEY_LONGTEXT, false )
218 add_string( SOUT_CFG_PREFIX "salt", "", NULL,
219 SRTP_SALT_TEXT, SRTP_SALT_LONGTEXT, false )
222 add_bool( SOUT_CFG_PREFIX "mp4a-latm", false, NULL, RFC3016_TEXT,
223 RFC3016_LONGTEXT, false )
225 set_callbacks( Open, Close )
228 /*****************************************************************************
229 * Exported prototypes
230 *****************************************************************************/
231 static const char *const ppsz_sout_options[] = {
232 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
233 "sap", "description", "url", "email", "phone",
234 "proto", "rtcp-mux", "caching", "key", "salt",
238 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
239 static int Del ( sout_stream_t *, sout_stream_id_t * );
240 static int Send( sout_stream_t *, sout_stream_id_t *,
242 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
243 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
244 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
247 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
248 static void* ThreadSend( vlc_object_t *p_this );
249 static void *rtp_listen_thread( void * );
251 static void SDPHandleUrl( sout_stream_t *, const char * );
253 static int SapSetup( sout_stream_t *p_stream );
254 static int FileSetup( sout_stream_t *p_stream );
255 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t * );
257 struct sout_stream_sys_t
261 vlc_mutex_t lock_sdp;
268 session_descriptor_t *p_session;
271 httpd_host_t *p_httpd_host;
272 httpd_file_t *p_httpd_file;
277 /* RTSP NPT and timestamp computations */
278 mtime_t i_npt_zero; /* when NPT=0 packet is sent */
279 int64_t i_pts_zero; /* predicts PTS of NPT=0 packet */
280 int64_t i_pts_offset; /* matches actual PTS to prediction */
284 char *psz_destination;
285 uint32_t payload_bitmap;
287 uint16_t i_port_audio;
288 uint16_t i_port_video;
294 /* in case we do TS/PS over rtp */
296 sout_access_out_t *p_grab;
302 sout_stream_id_t **es;
305 typedef int (*pf_rtp_packetizer_t)( sout_stream_id_t *, block_t * );
307 typedef struct rtp_sink_t
313 struct sout_stream_id_t
317 sout_stream_t *p_stream;
320 uint8_t i_payload_type;
322 uint32_t i_ts_offset;
326 uint16_t i_seq_sent_next;
337 /* Packetizer specific fields */
340 srtp_session_t *srtp;
342 pf_rtp_packetizer_t pf_packetize;
345 vlc_mutex_t lock_sink;
348 rtsp_stream_id_t *rtsp_id;
354 block_fifo_t *p_fifo;
358 /*****************************************************************************
360 *****************************************************************************/
361 static int Open( vlc_object_t *p_this )
363 sout_stream_t *p_stream = (sout_stream_t*)p_this;
364 sout_instance_t *p_sout = p_stream->p_sout;
365 sout_stream_sys_t *p_sys = NULL;
366 config_chain_t *p_cfg = NULL;
370 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
371 ppsz_sout_options, p_stream->p_cfg );
373 p_sys = malloc( sizeof( sout_stream_sys_t ) );
377 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
379 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
380 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
381 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
382 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
384 if( p_sys->i_port_audio && p_sys->i_port_video == p_sys->i_port_audio )
386 msg_Err( p_stream, "audio and video RTP port must be distinct" );
387 free( p_sys->psz_destination );
392 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
394 if( !strcmp( p_cfg->psz_name, "sdp" )
395 && ( p_cfg->psz_value != NULL )
396 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
404 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
407 if( !strncasecmp( psz, "rtsp:", 5 ) )
413 /* Transport protocol */
414 p_sys->proto = IPPROTO_UDP;
415 psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
417 if ((psz == NULL) || !strcasecmp (psz, "udp"))
418 (void)0; /* default */
420 if (!strcasecmp (psz, "dccp"))
422 p_sys->proto = IPPROTO_DCCP;
423 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
427 if (!strcasecmp (psz, "sctp"))
429 p_sys->proto = IPPROTO_TCP;
430 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
435 if (!strcasecmp (psz, "tcp"))
437 p_sys->proto = IPPROTO_TCP;
438 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
442 if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
443 p_sys->proto = IPPROTO_UDPLITE;
445 msg_Warn (p_this, "unknown or unsupported transport protocol \"%s\"",
448 var_Create (p_this, "dccp-service", VLC_VAR_STRING);
450 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
452 msg_Err( p_stream, "missing destination and not in RTSP mode" );
457 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
458 if( p_sys->i_ttl == -1 )
460 /* Normally, we should let the default hop limit up to the core,
461 * but we have to know it to build our SDP properly, which is why
462 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
464 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
467 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
469 /* NPT=0 time will be determined when we packetize the first packet
470 * (of any ES). But we want to be able to report rtptime in RTSP
471 * without waiting. So until then, we use an arbitrary reference
472 * PTS for timestamp computations, and then actual PTS will catch
473 * up using offsets. */
474 p_sys->i_npt_zero = VLC_TS_INVALID;
475 p_sys->i_pts_zero = mdate(); /* arbitrary value, could probably be
477 p_sys->payload_bitmap = 0;
481 p_sys->psz_sdp = NULL;
483 p_sys->b_export_sap = false;
484 p_sys->p_session = NULL;
485 p_sys->psz_sdp_file = NULL;
487 p_sys->p_httpd_host = NULL;
488 p_sys->p_httpd_file = NULL;
490 p_stream->p_sys = p_sys;
492 vlc_mutex_init( &p_sys->lock_sdp );
493 vlc_mutex_init( &p_sys->lock_ts );
494 vlc_mutex_init( &p_sys->lock_es );
496 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
499 sout_stream_id_t *id;
501 /* Check muxer type */
502 if( strncasecmp( psz, "ps", 2 )
503 && strncasecmp( psz, "mpeg1", 5 )
504 && strncasecmp( psz, "ts", 2 ) )
506 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
508 vlc_mutex_destroy( &p_sys->lock_sdp );
509 vlc_mutex_destroy( &p_sys->lock_es );
510 free( p_sys->psz_destination );
515 p_sys->p_grab = GrabberCreate( p_stream );
516 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
519 if( p_sys->p_mux == NULL )
521 msg_Err( p_stream, "cannot create muxer" );
522 sout_AccessOutDelete( p_sys->p_grab );
523 vlc_mutex_destroy( &p_sys->lock_sdp );
524 vlc_mutex_destroy( &p_sys->lock_es );
525 free( p_sys->psz_destination );
530 id = Add( p_stream, NULL );
533 sout_MuxDelete( p_sys->p_mux );
534 sout_AccessOutDelete( p_sys->p_grab );
535 vlc_mutex_destroy( &p_sys->lock_sdp );
536 vlc_mutex_destroy( &p_sys->lock_es );
537 free( p_sys->psz_destination );
542 p_sys->packet = NULL;
544 p_stream->pf_add = MuxAdd;
545 p_stream->pf_del = MuxDel;
546 p_stream->pf_send = MuxSend;
551 p_sys->p_grab = NULL;
553 p_stream->pf_add = Add;
554 p_stream->pf_del = Del;
555 p_stream->pf_send = Send;
558 if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
559 SDPHandleUrl( p_stream, "sap" );
561 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
564 config_chain_t *p_cfg;
566 SDPHandleUrl( p_stream, psz );
568 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
570 if( !strcmp( p_cfg->psz_name, "sdp" ) )
572 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
575 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
576 if( !strcmp( p_cfg->psz_value, psz ) )
579 SDPHandleUrl( p_stream, p_cfg->psz_value );
585 /* update p_sout->i_out_pace_nocontrol */
586 p_stream->p_sout->i_out_pace_nocontrol++;
591 /*****************************************************************************
593 *****************************************************************************/
594 static void Close( vlc_object_t * p_this )
596 sout_stream_t *p_stream = (sout_stream_t*)p_this;
597 sout_stream_sys_t *p_sys = p_stream->p_sys;
599 /* update p_sout->i_out_pace_nocontrol */
600 p_stream->p_sout->i_out_pace_nocontrol--;
604 assert( p_sys->i_es == 1 );
606 sout_MuxDelete( p_sys->p_mux );
607 Del( p_stream, p_sys->es[0] );
608 sout_AccessOutDelete( p_sys->p_grab );
612 block_Release( p_sys->packet );
614 if( p_sys->b_export_sap )
617 SapSetup( p_stream );
621 if( p_sys->rtsp != NULL )
622 RtspUnsetup( p_sys->rtsp );
624 vlc_mutex_destroy( &p_sys->lock_sdp );
625 vlc_mutex_destroy( &p_sys->lock_ts );
626 vlc_mutex_destroy( &p_sys->lock_es );
628 if( p_sys->p_httpd_file )
629 httpd_FileDelete( p_sys->p_httpd_file );
631 if( p_sys->p_httpd_host )
632 httpd_HostDelete( p_sys->p_httpd_host );
634 free( p_sys->psz_sdp );
636 if( p_sys->psz_sdp_file != NULL )
639 unlink( p_sys->psz_sdp_file );
641 free( p_sys->psz_sdp_file );
643 free( p_sys->psz_destination );
647 /*****************************************************************************
649 *****************************************************************************/
650 static void SDPHandleUrl( sout_stream_t *p_stream, const char *psz_url )
652 sout_stream_sys_t *p_sys = p_stream->p_sys;
655 vlc_UrlParse( &url, psz_url, 0 );
656 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
658 if( p_sys->p_httpd_file )
660 msg_Err( p_stream, "you can use sdp=http:// only once" );
664 if( HttpSetup( p_stream, &url ) )
666 msg_Err( p_stream, "cannot export SDP as HTTP" );
669 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
671 if( p_sys->rtsp != NULL )
673 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
677 /* FIXME test if destination is multicast or no destination at all */
678 p_sys->rtsp = RtspSetup( p_stream, &url );
679 if( p_sys->rtsp == NULL )
680 msg_Err( p_stream, "cannot export SDP as RTSP" );
682 if( p_sys->p_mux != NULL )
684 sout_stream_id_t *id = p_sys->es[0];
685 id->rtsp_id = RtspAddId( p_sys->rtsp, id, GetDWBE( id->ssrc ),
686 p_sys->psz_destination, p_sys->i_ttl,
687 id->i_port, id->i_port + 1 );
690 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
691 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
693 p_sys->b_export_sap = true;
694 SapSetup( p_stream );
696 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
698 if( p_sys->psz_sdp_file != NULL )
700 msg_Err( p_stream, "you can use sdp=file:// only once" );
703 psz_url = &psz_url[5];
704 if( psz_url[0] == '/' && psz_url[1] == '/' )
706 p_sys->psz_sdp_file = strdup( psz_url );
707 if( p_sys->psz_sdp_file == NULL )
709 decode_URI( p_sys->psz_sdp_file ); /* FIXME? */
710 FileSetup( p_stream );
714 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
719 vlc_UrlClean( &url );
722 /*****************************************************************************
724 *****************************************************************************/
726 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
728 const sout_stream_sys_t *p_sys = p_stream->p_sys;
730 struct sockaddr_storage dst;
734 * When we have a fixed destination (typically when we do multicast),
735 * we need to put the actual port numbers in the SDP.
736 * When there is no fixed destination, we only support RTSP unicast
737 * on-demand setup, so we should rather let the clients decide which ports
739 * When there is both a fixed destination and RTSP unicast, we need to
740 * put port numbers used by the fixed destination, otherwise the SDP would
741 * become totally incorrect for multicast use. It should be noted that
742 * port numbers from SDP with RTSP are only "recommendation" from the
743 * server to the clients (per RFC2326), so only broken clients will fail
744 * to handle this properly. There is no solution but to use two differents
745 * output chain with two different RTSP URLs if you need to handle this
750 if( p_sys->psz_destination != NULL )
754 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
755 dstlen = sizeof( dst );
756 if( p_sys->es[0]->listen.fd != NULL )
757 getsockname( p_sys->es[0]->listen.fd[0],
758 (struct sockaddr *)&dst, &dstlen );
760 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
761 (struct sockaddr *)&dst, &dstlen );
767 /* Dummy destination address for RTSP */
768 memset (&dst, 0, sizeof( struct sockaddr_in ) );
769 dst.ss_family = AF_INET;
773 dstlen = sizeof( struct sockaddr_in );
776 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
777 NULL, 0, (struct sockaddr *)&dst, dstlen );
778 if( psz_sdp == NULL )
781 /* TODO: a=source-filter */
782 if( p_sys->rtcp_mux )
783 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
785 if( rtsp_url != NULL )
786 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
788 /* FIXME: locking?! */
789 for( i = 0; i < p_sys->i_es; i++ )
791 sout_stream_id_t *id = p_sys->es[i];
792 const char *mime_major; /* major MIME type */
793 const char *proto = "RTP/AVP"; /* protocol */
798 mime_major = "video";
801 mime_major = "audio";
810 if( rtsp_url == NULL )
812 switch( p_sys->proto )
817 proto = "TCP/RTP/AVP";
820 proto = "DCCP/RTP/AVP";
822 case IPPROTO_UDPLITE:
827 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
828 id->i_payload_type, false, id->i_bitrate,
829 id->psz_enc, id->i_clock_rate, id->i_channels,
832 if( !p_sys->rtcp_mux && (id->i_port & 1) ) /* cf RFC4566 §5.14 */
833 sdp_AddAttribute ( &psz_sdp, "rtcp", "%u", id->i_port + 1 );
835 if( rtsp_url != NULL )
837 assert( strlen( rtsp_url ) > 0 );
838 bool addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
839 sdp_AddAttribute ( &psz_sdp, "control",
840 addslash ? "%s/trackID=%u" : "%strackID=%u",
845 if( id->listen.fd != NULL )
846 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
847 if( p_sys->proto == IPPROTO_DCCP )
848 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
849 "SC:RTP%c", toupper( mime_major[0] ) );
856 /*****************************************************************************
858 *****************************************************************************/
860 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
862 static const char hex[16] = "0123456789abcdef";
865 for( i = 0; i < i_data; i++ )
867 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
868 s[2*i+1] = hex[(p_data[i] )&0xf];
874 * Shrink the MTU down to a fixed packetization time (for audio).
877 rtp_set_ptime (sout_stream_id_t *id, unsigned ptime_ms, size_t bytes)
879 /* Samples per second */
880 size_t spl = (id->i_clock_rate - 1) * ptime_ms / 1000 + 1;
881 bytes *= id->i_channels;
884 if (spl < rtp_mtu (id)) /* MTU is big enough for ptime */
885 id->i_mtu = 12 + spl;
886 else /* MTU is too small for ptime, align to a sample boundary */
887 id->i_mtu = 12 + (((id->i_mtu - 12) / bytes) * bytes);
890 uint32_t rtp_compute_ts( const sout_stream_id_t *id, int64_t i_pts )
892 /* NOTE: this plays nice with offsets because the calculations are
894 return i_pts * (int64_t)id->i_clock_rate / CLOCK_FREQ;
897 /** Add an ES as a new RTP stream */
898 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
900 /* NOTE: As a special case, if we use a non-RTP
901 * mux (TS/PS), then p_fmt is NULL. */
902 sout_stream_sys_t *p_sys = p_stream->p_sys;
903 sout_stream_id_t *id;
906 if (0xffffffff == p_sys->payload_bitmap)
908 msg_Err (p_stream, "too many RTP elementary streams");
912 /* Choose the port */
917 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
918 i_port = p_sys->i_port_audio;
920 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
921 i_port = p_sys->i_port_video;
923 /* We do not need the ES lock (p_sys->lock_es) here, because this is the
924 * only one thread that can *modify* the ES table. The ES lock protects
925 * the other threads from our modifications (TAB_APPEND, TAB_REMOVE). */
926 for (int i = 0; i_port && (i < p_sys->i_es); i++)
927 if (i_port == p_sys->es[i]->i_port)
928 i_port = 0; /* Port already in use! */
929 for (uint16_t p = p_sys->i_port; i_port == 0; p += 2)
933 msg_Err (p_stream, "too many RTP elementary streams");
937 for (int i = 0; i_port && (i < p_sys->i_es); i++)
938 if (p == p_sys->es[i]->i_port)
942 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
945 vlc_object_attach( id, p_stream );
947 id->p_stream = p_stream;
949 /* Look for free dymanic payload type */
950 id->i_payload_type = 96;
951 while (p_sys->payload_bitmap & (1 << (id->i_payload_type - 96)))
952 id->i_payload_type++;
953 assert (id->i_payload_type < 128);
955 vlc_rand_bytes (&id->i_sequence, sizeof (id->i_sequence));
956 vlc_rand_bytes (id->ssrc, sizeof (id->ssrc));
958 id->i_seq_sent_next = id->i_sequence;
962 id->i_clock_rate = 90000; /* most common case for video */
967 id->i_cat = p_fmt->i_cat;
968 if( p_fmt->i_cat == AUDIO_ES )
970 id->i_clock_rate = p_fmt->audio.i_rate;
971 id->i_channels = p_fmt->audio.i_channels;
973 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
977 id->i_cat = VIDEO_ES;
981 id->i_mtu = config_GetInt( p_stream, "mtu" );
982 if( id->i_mtu <= 12 + 16 )
983 id->i_mtu = 576 - 20 - 8; /* pessimistic */
984 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
986 id->pf_packetize = NULL;
991 char *key = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"key");
994 id->srtp = srtp_create (SRTP_ENCR_AES_CM, SRTP_AUTH_HMAC_SHA1, 10,
995 SRTP_PRF_AES_CM, SRTP_RCC_MODE1);
996 if (id->srtp == NULL)
1002 char *salt = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"salt");
1003 errno = srtp_setkeystring (id->srtp, key, salt ? salt : "");
1008 msg_Err (p_stream, "bad SRTP key/salt combination (%m)");
1011 id->i_sequence = 0; /* FIXME: awful hack for libvlc_srtp */
1015 vlc_mutex_init( &id->lock_sink );
1020 id->listen.fd = NULL;
1023 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
1025 if( p_sys->psz_destination != NULL )
1026 switch( p_sys->proto )
1033 case VIDEO_ES: code = "RTPV"; break;
1034 case AUDIO_ES: code = "RTPARTPV"; break;
1035 case SPU_ES: code = "RTPTRTPV"; break;
1036 default: code = "RTPORTPV"; break;
1038 var_SetString (p_stream, "dccp-service", code);
1039 } /* fall through */
1041 id->listen.fd = net_Listen( VLC_OBJECT(p_stream),
1042 p_sys->psz_destination, i_port,
1044 if( id->listen.fd == NULL )
1046 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
1049 if( vlc_clone( &id->listen.thread, rtp_listen_thread, id,
1050 VLC_THREAD_PRIORITY_LOW ) )
1052 net_ListenClose( id->listen.fd );
1053 id->listen.fd = NULL;
1060 int ttl = (p_sys->i_ttl >= 0) ? p_sys->i_ttl : -1;
1061 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
1062 i_port, ttl, p_sys->proto );
1065 msg_Err( p_stream, "cannot create RTP socket" );
1068 /* Ignore any unexpected incoming packet (including RTCP-RR
1069 * packets in case of rtcp-mux) */
1070 setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &(int){ 0 },
1072 rtp_add_sink( id, fd, p_sys->rtcp_mux, NULL );
1078 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
1080 if( psz == NULL ) /* Uho! */
1083 if( strncmp( psz, "ts", 2 ) == 0 )
1085 id->i_payload_type = 33;
1086 id->psz_enc = "MP2T";
1090 id->psz_enc = "MP2P";
1095 switch( p_fmt->i_codec )
1097 case VLC_CODEC_MULAW:
1098 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
1099 id->i_payload_type = 0;
1100 id->psz_enc = "PCMU";
1101 id->pf_packetize = rtp_packetize_split;
1102 rtp_set_ptime (id, 20, 1);
1104 case VLC_CODEC_ALAW:
1105 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
1106 id->i_payload_type = 8;
1107 id->psz_enc = "PCMA";
1108 id->pf_packetize = rtp_packetize_split;
1109 rtp_set_ptime (id, 20, 1);
1111 case VLC_CODEC_S16B:
1112 case VLC_CODEC_S16L:
1113 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
1115 id->i_payload_type = 11;
1117 else if( p_fmt->audio.i_channels == 2 &&
1118 p_fmt->audio.i_rate == 44100 )
1120 id->i_payload_type = 10;
1122 id->psz_enc = "L16";
1123 if( p_fmt->i_codec == VLC_CODEC_S16B )
1124 id->pf_packetize = rtp_packetize_split;
1126 id->pf_packetize = rtp_packetize_swab;
1127 rtp_set_ptime (id, 20, 2);
1131 id->pf_packetize = rtp_packetize_split;
1132 rtp_set_ptime (id, 20, 1);
1134 case VLC_CODEC_MPGA:
1135 id->i_payload_type = 14;
1136 id->psz_enc = "MPA";
1137 id->i_clock_rate = 90000; /* not 44100 */
1138 id->pf_packetize = rtp_packetize_mpa;
1140 case VLC_CODEC_MPGV:
1141 id->i_payload_type = 32;
1142 id->psz_enc = "MPV";
1143 id->pf_packetize = rtp_packetize_mpv;
1145 case VLC_CODEC_ADPCM_G726:
1146 switch( p_fmt->i_bitrate / 1000 )
1149 id->psz_enc = "G726-16";
1150 id->pf_packetize = rtp_packetize_g726_16;
1153 id->psz_enc = "G726-24";
1154 id->pf_packetize = rtp_packetize_g726_24;
1157 id->psz_enc = "G726-32";
1158 id->pf_packetize = rtp_packetize_g726_32;
1161 id->psz_enc = "G726-40";
1162 id->pf_packetize = rtp_packetize_g726_40;
1165 msg_Err( p_stream, "cannot add this stream (unsupported "
1166 "G.726 bit rate: %u)", p_fmt->i_bitrate );
1171 id->psz_enc = "ac3";
1172 id->pf_packetize = rtp_packetize_ac3;
1174 case VLC_CODEC_H263:
1175 id->psz_enc = "H263-1998";
1176 id->pf_packetize = rtp_packetize_h263;
1178 case VLC_CODEC_H264:
1179 id->psz_enc = "H264";
1180 id->pf_packetize = rtp_packetize_h264;
1181 id->psz_fmtp = NULL;
1183 if( p_fmt->i_extra > 0 )
1185 uint8_t *p_buffer = p_fmt->p_extra;
1186 int i_buffer = p_fmt->i_extra;
1187 char *p_64_sps = NULL;
1188 char *p_64_pps = NULL;
1191 while( i_buffer > 4 &&
1192 p_buffer[0] == 0 && p_buffer[1] == 0 &&
1193 p_buffer[2] == 0 && p_buffer[3] == 1 )
1195 const int i_nal_type = p_buffer[4]&0x1f;
1199 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1202 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1204 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1206 /* we found another startcode */
1211 if( i_nal_type == 7 )
1213 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1214 sprintf_hexa( hexa, &p_buffer[5], 3 );
1216 else if( i_nal_type == 8 )
1218 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1224 if( p_64_sps && p_64_pps &&
1225 ( asprintf( &id->psz_fmtp,
1226 "packetization-mode=1;profile-level-id=%s;"
1227 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1228 p_64_pps ) == -1 ) )
1229 id->psz_fmtp = NULL;
1234 id->psz_fmtp = strdup( "packetization-mode=1" );
1237 case VLC_CODEC_MP4V:
1239 id->psz_enc = "MP4V-ES";
1240 id->pf_packetize = rtp_packetize_split;
1241 if( p_fmt->i_extra > 0 )
1243 char hexa[2*p_fmt->i_extra +1];
1244 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1245 if( asprintf( &id->psz_fmtp,
1246 "profile-level-id=3; config=%s;", hexa ) == -1 )
1247 id->psz_fmtp = NULL;
1251 case VLC_CODEC_MP4A:
1255 char hexa[2*p_fmt->i_extra +1];
1257 id->psz_enc = "mpeg4-generic";
1258 id->pf_packetize = rtp_packetize_mp4a;
1259 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1260 if( asprintf( &id->psz_fmtp,
1261 "streamtype=5; profile-level-id=15; "
1262 "mode=AAC-hbr; config=%s; SizeLength=13; "
1263 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1265 id->psz_fmtp = NULL;
1271 unsigned char config[6];
1272 unsigned int aacsrates[15] = {
1273 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1274 16000, 12000, 11025, 8000, 7350, 0, 0 };
1276 for( i = 0; i < 15; i++ )
1277 if( p_fmt->audio.i_rate == aacsrates[i] )
1283 config[3]=p_fmt->audio.i_channels<<4;
1287 id->psz_enc = "MP4A-LATM";
1288 id->pf_packetize = rtp_packetize_mp4a_latm;
1289 sprintf_hexa( hexa, config, 6 );
1290 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1291 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1292 id->psz_fmtp = NULL;
1296 case VLC_CODEC_AMR_NB:
1297 id->psz_enc = "AMR";
1298 id->psz_fmtp = strdup( "octet-align=1" );
1299 id->pf_packetize = rtp_packetize_amr;
1301 case VLC_CODEC_AMR_WB:
1302 id->psz_enc = "AMR-WB";
1303 id->psz_fmtp = strdup( "octet-align=1" );
1304 id->pf_packetize = rtp_packetize_amr;
1306 case VLC_CODEC_SPEEX:
1307 id->psz_enc = "SPEEX";
1308 id->pf_packetize = rtp_packetize_spx;
1310 case VLC_CODEC_ITU_T140:
1311 id->psz_enc = "t140" ;
1312 id->i_clock_rate = 1000;
1313 id->pf_packetize = rtp_packetize_t140;
1317 msg_Err( p_stream, "cannot add this stream (unsupported "
1318 "codec: %4.4s)", (char*)&p_fmt->i_codec );
1321 if (id->i_payload_type >= 96)
1322 /* Mark dynamic payload type in use */
1323 p_sys->payload_bitmap |= 1 << (id->i_payload_type - 96);
1325 #if 0 /* No payload formats sets this at the moment */
1328 cscov += 8 /* UDP */ + 12 /* RTP */;
1330 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1333 vlc_mutex_lock( &p_sys->lock_ts );
1334 id->b_ts_init = ( p_sys->i_npt_zero != VLC_TS_INVALID );
1335 vlc_mutex_unlock( &p_sys->lock_ts );
1337 id->i_ts_offset = rtp_compute_ts( id, p_sys->i_pts_offset );
1339 if( p_sys->rtsp != NULL )
1340 id->rtsp_id = RtspAddId( p_sys->rtsp, id,
1341 GetDWBE( id->ssrc ),
1342 p_sys->psz_destination,
1343 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1345 id->p_fifo = block_FifoNew();
1346 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1347 VLC_THREAD_PRIORITY_HIGHEST ) )
1350 /* Update p_sys context */
1351 vlc_mutex_lock( &p_sys->lock_es );
1352 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1353 vlc_mutex_unlock( &p_sys->lock_es );
1355 psz_sdp = SDPGenerate( p_stream, NULL );
1357 vlc_mutex_lock( &p_sys->lock_sdp );
1358 free( p_sys->psz_sdp );
1359 p_sys->psz_sdp = psz_sdp;
1360 vlc_mutex_unlock( &p_sys->lock_sdp );
1362 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1364 /* Update SDP (sap/file) */
1365 if( p_sys->b_export_sap ) SapSetup( p_stream );
1366 if( p_sys->psz_sdp_file != NULL ) FileSetup( p_stream );
1371 Del( p_stream, id );
1375 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1377 sout_stream_sys_t *p_sys = p_stream->p_sys;
1379 if( id->p_fifo != NULL )
1381 vlc_object_kill( id );
1382 vlc_thread_join( id );
1383 block_FifoRelease( id->p_fifo );
1386 vlc_mutex_lock( &p_sys->lock_es );
1387 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1388 vlc_mutex_unlock( &p_sys->lock_es );
1390 /* Release dynamic payload type */
1391 if (id->i_payload_type >= 96)
1392 p_sys->payload_bitmap &= ~(1 << (id->i_payload_type - 96));
1394 free( id->psz_fmtp );
1397 RtspDelId( p_sys->rtsp, id->rtsp_id );
1399 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1400 if( id->listen.fd != NULL )
1402 vlc_cancel( id->listen.thread );
1403 vlc_join( id->listen.thread, NULL );
1404 net_ListenClose( id->listen.fd );
1407 if( id->srtp != NULL )
1408 srtp_destroy( id->srtp );
1411 vlc_mutex_destroy( &id->lock_sink );
1413 /* Update SDP (sap/file) */
1414 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1415 if( p_sys->psz_sdp_file != NULL ) FileSetup( p_stream );
1417 vlc_object_detach( id );
1418 vlc_object_release( id );
1422 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1427 assert( p_stream->p_sys->p_mux == NULL );
1430 while( p_buffer != NULL )
1432 p_next = p_buffer->p_next;
1433 if( id->pf_packetize( id, p_buffer ) )
1436 block_Release( p_buffer );
1442 /****************************************************************************
1444 ****************************************************************************/
1445 static int SapSetup( sout_stream_t *p_stream )
1447 sout_stream_sys_t *p_sys = p_stream->p_sys;
1448 sout_instance_t *p_sout = p_stream->p_sout;
1450 /* Remove the previous session */
1451 if( p_sys->p_session != NULL)
1453 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1454 p_sys->p_session = NULL;
1457 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1459 announce_method_t *p_method = sout_SAPMethod();
1460 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1462 p_sys->psz_destination,
1464 sout_MethodRelease( p_method );
1470 /****************************************************************************
1472 ****************************************************************************/
1473 static int FileSetup( sout_stream_t *p_stream )
1475 sout_stream_sys_t *p_sys = p_stream->p_sys;
1478 if( p_sys->psz_sdp == NULL )
1479 return VLC_EGENERIC; /* too early */
1481 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1483 msg_Err( p_stream, "cannot open file '%s' (%m)",
1484 p_sys->psz_sdp_file );
1485 return VLC_EGENERIC;
1488 fputs( p_sys->psz_sdp, f );
1494 /****************************************************************************
1496 ****************************************************************************/
1497 static int HttpCallback( httpd_file_sys_t *p_args,
1498 httpd_file_t *, uint8_t *p_request,
1499 uint8_t **pp_data, int *pi_data );
1501 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t *url)
1503 sout_stream_sys_t *p_sys = p_stream->p_sys;
1505 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1506 url->i_port > 0 ? url->i_port : 80 );
1507 if( p_sys->p_httpd_host )
1509 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1510 url->psz_path ? url->psz_path : "/",
1513 HttpCallback, (void*)p_sys );
1515 if( p_sys->p_httpd_file == NULL )
1517 return VLC_EGENERIC;
1522 static int HttpCallback( httpd_file_sys_t *p_args,
1523 httpd_file_t *f, uint8_t *p_request,
1524 uint8_t **pp_data, int *pi_data )
1526 VLC_UNUSED(f); VLC_UNUSED(p_request);
1527 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1529 vlc_mutex_lock( &p_sys->lock_sdp );
1530 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1532 *pi_data = strlen( p_sys->psz_sdp );
1533 *pp_data = malloc( *pi_data );
1534 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1541 vlc_mutex_unlock( &p_sys->lock_sdp );
1546 /****************************************************************************
1548 ****************************************************************************/
1549 static void* ThreadSend( vlc_object_t *p_this )
1552 # define ECONNREFUSED WSAECONNREFUSED
1553 # define ENOPROTOOPT WSAENOPROTOOPT
1554 # define EHOSTUNREACH WSAEHOSTUNREACH
1555 # define ENETUNREACH WSAENETUNREACH
1556 # define ENETDOWN WSAENETDOWN
1557 # define ENOBUFS WSAENOBUFS
1558 # define EAGAIN WSAEWOULDBLOCK
1559 # define EWOULDBLOCK WSAEWOULDBLOCK
1561 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1562 unsigned i_caching = id->i_caching;
1566 block_t *out = block_FifoGet( id->p_fifo );
1567 block_cleanup_push (out);
1571 { /* FIXME: this is awfully inefficient */
1572 size_t len = out->i_buffer;
1573 out = block_Realloc( out, 0, len + 10 );
1574 out->i_buffer = len;
1576 int canc = vlc_savecancel ();
1577 int val = srtp_send( id->srtp, out->p_buffer, &len, len + 10 );
1578 vlc_restorecancel (canc);
1582 msg_Dbg( id, "SRTP sending error: %m" );
1583 block_Release( out );
1587 out->i_buffer = len;
1591 mwait (out->i_dts + i_caching);
1596 ssize_t len = out->i_buffer;
1597 int canc = vlc_savecancel ();
1599 vlc_mutex_lock( &id->lock_sink );
1600 unsigned deadc = 0; /* How many dead sockets? */
1601 int deadv[id->sinkc]; /* Dead sockets list */
1603 for( int i = 0; i < id->sinkc; i++ )
1606 if( !id->srtp ) /* FIXME: SRTCP support */
1608 SendRTCP( id->sinkv[i].rtcp, out );
1610 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1614 /* Soft errors (e.g. ICMP): */
1615 case ECONNREFUSED: /* Port unreachable */
1618 case EPROTO: /* Protocol unreachable */
1620 case EHOSTUNREACH: /* Host unreachable */
1621 case ENETUNREACH: /* Network unreachable */
1622 case ENETDOWN: /* Entire network down */
1623 send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 );
1624 /* Transient congestion: */
1625 case ENOMEM: /* out of socket buffers */
1628 #if (EAGAIN != EWOULDBLOCK)
1634 deadv[deadc++] = id->sinkv[i].rtp_fd;
1636 id->i_seq_sent_next = ntohs(((uint16_t *) out->p_buffer)[1]) + 1;
1637 vlc_mutex_unlock( &id->lock_sink );
1638 block_Release( out );
1640 for( unsigned i = 0; i < deadc; i++ )
1642 msg_Dbg( id, "removing socket %d", deadv[i] );
1643 rtp_del_sink( id, deadv[i] );
1645 vlc_restorecancel (canc);
1651 /* This thread dequeues incoming connections (DCCP streaming) */
1652 static void *rtp_listen_thread( void *data )
1654 sout_stream_id_t *id = data;
1656 assert( id->listen.fd != NULL );
1660 int fd = net_Accept( id, id->listen.fd );
1663 int canc = vlc_savecancel( );
1664 rtp_add_sink( id, fd, true, NULL );
1665 vlc_restorecancel( canc );
1672 int rtp_add_sink( sout_stream_id_t *id, int fd, bool rtcp_mux, uint16_t *seq )
1674 rtp_sink_t sink = { fd, NULL };
1675 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1677 if( sink.rtcp == NULL )
1678 msg_Err( id, "RTCP failed!" );
1680 vlc_mutex_lock( &id->lock_sink );
1681 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1683 *seq = id->i_seq_sent_next;
1684 vlc_mutex_unlock( &id->lock_sink );
1688 void rtp_del_sink( sout_stream_id_t *id, int fd )
1690 rtp_sink_t sink = { fd, NULL };
1692 /* NOTE: must be safe to use if fd is not included */
1693 vlc_mutex_lock( &id->lock_sink );
1694 for( int i = 0; i < id->sinkc; i++ )
1696 if (id->sinkv[i].rtp_fd == fd)
1698 sink = id->sinkv[i];
1699 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1703 vlc_mutex_unlock( &id->lock_sink );
1705 CloseRTCP( sink.rtcp );
1706 net_Close( sink.rtp_fd );
1709 uint16_t rtp_get_seq( sout_stream_id_t *id )
1711 /* This will return values for the next packet. */
1714 vlc_mutex_lock( &id->lock_sink );
1715 seq = id->i_seq_sent_next;
1716 vlc_mutex_unlock( &id->lock_sink );
1721 /* Return a timestamp corresponding to packets being sent now, and that
1722 * can be passed to rtp_compute_ts() to get rtptime values for each ES. */
1723 int64_t rtp_get_ts( const sout_stream_t *p_stream )
1725 sout_stream_sys_t *p_sys = p_stream->p_sys;
1727 vlc_mutex_lock( &p_sys->lock_ts );
1728 i_npt_zero = p_sys->i_npt_zero;
1729 vlc_mutex_unlock( &p_sys->lock_ts );
1731 if( i_npt_zero == VLC_TS_INVALID )
1732 return p_sys->i_pts_zero;
1734 mtime_t now = mdate();
1735 if( now < i_npt_zero )
1736 return p_sys->i_pts_zero;
1738 return p_sys->i_pts_zero + (now - i_npt_zero);
1741 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1742 int b_marker, int64_t i_pts )
1744 if( !id->b_ts_init )
1746 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1747 vlc_mutex_lock( &p_sys->lock_ts );
1748 if( p_sys->i_npt_zero == VLC_TS_INVALID )
1750 /* This is the first packet of any ES. We initialize the
1751 * NPT=0 time reference, and the offset to match the
1752 * arbitrary PTS reference. */
1753 p_sys->i_npt_zero = i_pts + id->i_caching;
1754 p_sys->i_pts_offset = p_sys->i_pts_zero - i_pts;
1756 vlc_mutex_unlock( &p_sys->lock_ts );
1758 /* And in any case this is the first packet of this ES, so we
1759 * initialize the offset for this ES. */
1760 id->i_ts_offset = rtp_compute_ts( id, p_sys->i_pts_offset );
1761 id->b_ts_init = true;
1764 uint32_t i_timestamp = rtp_compute_ts( id, i_pts ) + id->i_ts_offset;
1766 out->p_buffer[0] = 0x80;
1767 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1768 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1769 out->p_buffer[3] = ( id->i_sequence )&0xff;
1770 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1771 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1772 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1773 out->p_buffer[7] = ( i_timestamp )&0xff;
1775 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1781 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1783 block_FifoPut( id->p_fifo, out );
1787 * @return configured max RTP payload size (including payload type-specific
1788 * headers, excluding RTP and transport headers)
1790 size_t rtp_mtu (const sout_stream_id_t *id)
1792 return id->i_mtu - 12;
1795 /*****************************************************************************
1797 *****************************************************************************/
1799 /** Add an ES to a non-RTP muxed stream */
1800 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1802 sout_input_t *p_input;
1803 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1804 assert( p_mux != NULL );
1806 p_input = sout_MuxAddStream( p_mux, p_fmt );
1807 if( p_input == NULL )
1809 msg_Err( p_stream, "cannot add this stream to the muxer" );
1813 return (sout_stream_id_t *)p_input;
1817 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1820 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1821 assert( p_mux != NULL );
1823 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1828 /** Remove an ES from a non-RTP muxed stream */
1829 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1831 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1832 assert( p_mux != NULL );
1834 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1839 static ssize_t AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1840 const block_t *p_buffer )
1842 sout_stream_sys_t *p_sys = p_stream->p_sys;
1843 sout_stream_id_t *id = p_sys->es[0];
1845 int64_t i_dts = p_buffer->i_dts;
1847 uint8_t *p_data = p_buffer->p_buffer;
1848 size_t i_data = p_buffer->i_buffer;
1849 size_t i_max = id->i_mtu - 12;
1851 size_t i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1857 /* output complete packet */
1858 if( p_sys->packet &&
1859 p_sys->packet->i_buffer + i_data > i_max )
1861 rtp_packetize_send( id, p_sys->packet );
1862 p_sys->packet = NULL;
1865 if( p_sys->packet == NULL )
1867 /* allocate a new packet */
1868 p_sys->packet = block_New( p_stream, id->i_mtu );
1869 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1870 p_sys->packet->i_dts = i_dts;
1871 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1872 i_dts += p_sys->packet->i_length;
1875 i_size = __MIN( i_data,
1876 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1878 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1881 p_sys->packet->i_buffer += i_size;
1890 static ssize_t AccessOutGrabberWrite( sout_access_out_t *p_access,
1893 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1899 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1901 p_next = p_buffer->p_next;
1902 block_Release( p_buffer );
1910 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1912 sout_access_out_t *p_grab;
1914 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1915 if( p_grab == NULL )
1918 p_grab->p_module = NULL;
1919 p_grab->psz_access = strdup( "grab" );
1920 p_grab->p_cfg = NULL;
1921 p_grab->psz_path = strdup( "" );
1922 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1923 p_grab->pf_seek = NULL;
1924 p_grab->pf_write = AccessOutGrabberWrite;
1925 vlc_object_attach( p_grab, p_stream );