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>
48 # include <sys/types.h>
51 # include <sys/stat.h>
53 #ifdef HAVE_LINUX_DCCP_H
54 # include <linux/dccp.h>
57 # define IPPROTO_DCCP 33
59 #ifndef IPPROTO_UDPLITE
60 # define IPPROTO_UDPLITE 136
67 /*****************************************************************************
69 *****************************************************************************/
71 #define DEST_TEXT N_("Destination")
72 #define DEST_LONGTEXT N_( \
73 "This is the output URL that will be used." )
74 #define SDP_TEXT N_("SDP")
75 #define SDP_LONGTEXT N_( \
76 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
77 "session will be made available. You must use an url: http://location to " \
78 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
79 "for the SDP to be announced via SAP." )
80 #define SAP_TEXT N_("SAP announcing")
81 #define SAP_LONGTEXT N_("Announce this session with SAP.")
82 #define MUX_TEXT N_("Muxer")
83 #define MUX_LONGTEXT N_( \
84 "This allows you to specify the muxer used for the streaming output. " \
85 "Default is to use no muxer (standard RTP stream)." )
87 #define NAME_TEXT N_("Session name")
88 #define NAME_LONGTEXT N_( \
89 "This is the name of the session that will be announced in the SDP " \
90 "(Session Descriptor)." )
91 #define DESC_TEXT N_("Session description")
92 #define DESC_LONGTEXT N_( \
93 "This allows you to give a short description with details about the stream, " \
94 "that will be announced in the SDP (Session Descriptor)." )
95 #define URL_TEXT N_("Session URL")
96 #define URL_LONGTEXT N_( \
97 "This allows you to give an URL with more details about the stream " \
98 "(often the website of the streaming organization), that will " \
99 "be announced in the SDP (Session Descriptor)." )
100 #define EMAIL_TEXT N_("Session email")
101 #define EMAIL_LONGTEXT N_( \
102 "This allows you to give a contact mail address for the stream, that will " \
103 "be announced in the SDP (Session Descriptor)." )
104 #define PHONE_TEXT N_("Session phone number")
105 #define PHONE_LONGTEXT N_( \
106 "This allows you to give a contact telephone number for the stream, that will " \
107 "be announced in the SDP (Session Descriptor)." )
109 #define PORT_TEXT N_("Port")
110 #define PORT_LONGTEXT N_( \
111 "This allows you to specify the base port for the RTP streaming." )
112 #define PORT_AUDIO_TEXT N_("Audio port")
113 #define PORT_AUDIO_LONGTEXT N_( \
114 "This allows you to specify the default audio port for the RTP streaming." )
115 #define PORT_VIDEO_TEXT N_("Video port")
116 #define PORT_VIDEO_LONGTEXT N_( \
117 "This allows you to specify the default video port for the RTP streaming." )
119 #define TTL_TEXT N_("Hop limit (TTL)")
120 #define TTL_LONGTEXT N_( \
121 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
122 "the multicast packets sent by the stream output (-1 = use operating " \
123 "system built-in default).")
125 #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
126 #define RTCP_MUX_LONGTEXT N_( \
127 "This sends and receives RTCP packet multiplexed over the same port " \
130 #define PROTO_TEXT N_("Transport protocol")
131 #define PROTO_LONGTEXT N_( \
132 "This selects which transport protocol to use for RTP." )
134 #define SRTP_KEY_TEXT N_("SRTP key (hexadecimal)")
135 #define SRTP_KEY_LONGTEXT N_( \
136 "RTP packets will be integrity-protected and ciphered "\
137 "with this Secure RTP master shared secret key.")
139 #define SRTP_SALT_TEXT N_("SRTP salt (hexadecimal)")
140 #define SRTP_SALT_LONGTEXT N_( \
141 "Secure RTP requires a (non-secret) master salt value.")
143 static const char *const ppsz_protos[] = {
144 "dccp", "sctp", "tcp", "udp", "udplite",
147 static const char *const ppsz_protocols[] = {
148 "DCCP", "SCTP", "TCP", "UDP", "UDP-Lite",
151 #define RFC3016_TEXT N_("MP4A LATM")
152 #define RFC3016_LONGTEXT N_( \
153 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
155 static int Open ( vlc_object_t * );
156 static void Close( vlc_object_t * );
158 #define SOUT_CFG_PREFIX "sout-rtp-"
159 #define MAX_EMPTY_BLOCKS 200
162 set_shortname( N_("RTP"))
163 set_description( N_("RTP stream output") )
164 set_capability( "sout stream", 0 )
165 add_shortcut( "rtp" )
166 set_category( CAT_SOUT )
167 set_subcategory( SUBCAT_SOUT_STREAM )
169 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
170 DEST_LONGTEXT, true )
171 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
173 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
175 add_bool( SOUT_CFG_PREFIX "sap", false, NULL, SAP_TEXT, SAP_LONGTEXT,
178 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
179 NAME_LONGTEXT, true )
180 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
181 DESC_LONGTEXT, true )
182 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
184 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
185 EMAIL_LONGTEXT, true )
186 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
187 PHONE_LONGTEXT, true )
189 add_string( SOUT_CFG_PREFIX "proto", "udp", NULL, PROTO_TEXT,
190 PROTO_LONGTEXT, false )
191 change_string_list( ppsz_protos, ppsz_protocols, NULL )
192 add_integer( SOUT_CFG_PREFIX "port", 5004, NULL, PORT_TEXT,
193 PORT_LONGTEXT, true )
194 add_integer( SOUT_CFG_PREFIX "port-audio", 0, NULL, PORT_AUDIO_TEXT,
195 PORT_AUDIO_LONGTEXT, true )
196 add_integer( SOUT_CFG_PREFIX "port-video", 0, NULL, PORT_VIDEO_TEXT,
197 PORT_VIDEO_LONGTEXT, true )
199 add_integer( SOUT_CFG_PREFIX "ttl", -1, NULL, TTL_TEXT,
201 add_bool( SOUT_CFG_PREFIX "rtcp-mux", false, NULL,
202 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, false )
204 add_string( SOUT_CFG_PREFIX "key", "", NULL,
205 SRTP_KEY_TEXT, SRTP_KEY_LONGTEXT, false )
206 add_string( SOUT_CFG_PREFIX "salt", "", NULL,
207 SRTP_SALT_TEXT, SRTP_SALT_LONGTEXT, false )
209 add_bool( SOUT_CFG_PREFIX "mp4a-latm", false, NULL, RFC3016_TEXT,
210 RFC3016_LONGTEXT, false )
212 set_callbacks( Open, Close )
215 /*****************************************************************************
216 * Exported prototypes
217 *****************************************************************************/
218 static const char *const ppsz_sout_options[] = {
219 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
220 "sap", "description", "url", "email", "phone",
221 "proto", "rtcp-mux", "key", "salt",
225 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
226 static int Del ( sout_stream_t *, sout_stream_id_t * );
227 static int Send( sout_stream_t *, sout_stream_id_t *,
229 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
230 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
231 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
234 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
235 static void* ThreadSend( vlc_object_t *p_this );
236 static void *rtp_listen_thread( void * );
238 static void SDPHandleUrl( sout_stream_t *, const char * );
240 static int SapSetup( sout_stream_t *p_stream );
241 static int FileSetup( sout_stream_t *p_stream );
242 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t * );
244 struct sout_stream_sys_t
248 vlc_mutex_t lock_sdp;
255 session_descriptor_t *p_session;
258 httpd_host_t *p_httpd_host;
259 httpd_file_t *p_httpd_file;
265 char *psz_destination;
266 uint32_t payload_bitmap;
268 uint16_t i_port_audio;
269 uint16_t i_port_video;
275 /* in case we do TS/PS over rtp */
277 sout_access_out_t *p_grab;
283 sout_stream_id_t **es;
286 typedef int (*pf_rtp_packetizer_t)( sout_stream_id_t *, block_t * );
288 typedef struct rtp_sink_t
294 struct sout_stream_id_t
298 sout_stream_t *p_stream;
301 uint8_t i_payload_type;
313 /* Packetizer specific fields */
315 srtp_session_t *srtp;
316 pf_rtp_packetizer_t pf_packetize;
319 vlc_mutex_t lock_sink;
322 rtsp_stream_id_t *rtsp_id;
328 block_fifo_t *p_fifo;
332 /*****************************************************************************
334 *****************************************************************************/
335 static int Open( vlc_object_t *p_this )
337 sout_stream_t *p_stream = (sout_stream_t*)p_this;
338 sout_instance_t *p_sout = p_stream->p_sout;
339 sout_stream_sys_t *p_sys = NULL;
340 config_chain_t *p_cfg = NULL;
344 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
345 ppsz_sout_options, p_stream->p_cfg );
347 p_sys = malloc( sizeof( sout_stream_sys_t ) );
351 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
353 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
354 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
355 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
356 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
358 if( p_sys->i_port_audio && p_sys->i_port_video == p_sys->i_port_audio )
360 msg_Err( p_stream, "audio and video RTP port must be distinct" );
361 free( p_sys->psz_destination );
366 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
368 if( !strcmp( p_cfg->psz_name, "sdp" )
369 && ( p_cfg->psz_value != NULL )
370 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
378 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
381 if( !strncasecmp( psz, "rtsp:", 5 ) )
387 /* Transport protocol */
388 p_sys->proto = IPPROTO_UDP;
389 psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
391 if ((psz == NULL) || !strcasecmp (psz, "udp"))
392 (void)0; /* default */
394 if (!strcasecmp (psz, "dccp"))
396 p_sys->proto = IPPROTO_DCCP;
397 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
401 if (!strcasecmp (psz, "sctp"))
403 p_sys->proto = IPPROTO_TCP;
404 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
409 if (!strcasecmp (psz, "tcp"))
411 p_sys->proto = IPPROTO_TCP;
412 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
416 if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
417 p_sys->proto = IPPROTO_UDPLITE;
419 msg_Warn (p_this, "unknown or unsupported transport protocol \"%s\"",
422 var_Create (p_this, "dccp-service", VLC_VAR_STRING);
424 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
426 msg_Err( p_stream, "missing destination and not in RTSP mode" );
431 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
432 if( p_sys->i_ttl == -1 )
434 /* Normally, we should let the default hop limit up to the core,
435 * but we have to know it to build our SDP properly, which is why
436 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
438 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
441 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
443 p_sys->payload_bitmap = 0;
447 p_sys->psz_sdp = NULL;
449 p_sys->b_export_sap = false;
450 p_sys->p_session = NULL;
451 p_sys->psz_sdp_file = NULL;
453 p_sys->p_httpd_host = NULL;
454 p_sys->p_httpd_file = NULL;
456 p_stream->p_sys = p_sys;
458 vlc_mutex_init( &p_sys->lock_sdp );
459 vlc_mutex_init( &p_sys->lock_es );
461 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
464 sout_stream_id_t *id;
466 /* Check muxer type */
467 if( strncasecmp( psz, "ps", 2 )
468 && strncasecmp( psz, "mpeg1", 5 )
469 && strncasecmp( psz, "ts", 2 ) )
471 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
473 vlc_mutex_destroy( &p_sys->lock_sdp );
474 vlc_mutex_destroy( &p_sys->lock_es );
475 free( p_sys->psz_destination );
480 p_sys->p_grab = GrabberCreate( p_stream );
481 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
484 if( p_sys->p_mux == NULL )
486 msg_Err( p_stream, "cannot create muxer" );
487 sout_AccessOutDelete( p_sys->p_grab );
488 vlc_mutex_destroy( &p_sys->lock_sdp );
489 vlc_mutex_destroy( &p_sys->lock_es );
490 free( p_sys->psz_destination );
495 id = Add( p_stream, NULL );
498 sout_MuxDelete( p_sys->p_mux );
499 sout_AccessOutDelete( p_sys->p_grab );
500 vlc_mutex_destroy( &p_sys->lock_sdp );
501 vlc_mutex_destroy( &p_sys->lock_es );
502 free( p_sys->psz_destination );
507 p_sys->packet = NULL;
509 p_stream->pf_add = MuxAdd;
510 p_stream->pf_del = MuxDel;
511 p_stream->pf_send = MuxSend;
516 p_sys->p_grab = NULL;
518 p_stream->pf_add = Add;
519 p_stream->pf_del = Del;
520 p_stream->pf_send = Send;
523 if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
524 SDPHandleUrl( p_stream, "sap" );
526 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
529 config_chain_t *p_cfg;
531 SDPHandleUrl( p_stream, psz );
533 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
535 if( !strcmp( p_cfg->psz_name, "sdp" ) )
537 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
540 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
541 if( !strcmp( p_cfg->psz_value, psz ) )
544 SDPHandleUrl( p_stream, p_cfg->psz_value );
550 /* update p_sout->i_out_pace_nocontrol */
551 p_stream->p_sout->i_out_pace_nocontrol++;
556 /*****************************************************************************
558 *****************************************************************************/
559 static void Close( vlc_object_t * p_this )
561 sout_stream_t *p_stream = (sout_stream_t*)p_this;
562 sout_stream_sys_t *p_sys = p_stream->p_sys;
564 /* update p_sout->i_out_pace_nocontrol */
565 p_stream->p_sout->i_out_pace_nocontrol--;
569 assert( p_sys->i_es == 1 );
571 sout_MuxDelete( p_sys->p_mux );
572 Del( p_stream, p_sys->es[0] );
573 sout_AccessOutDelete( p_sys->p_grab );
577 block_Release( p_sys->packet );
579 if( p_sys->b_export_sap )
582 SapSetup( p_stream );
586 if( p_sys->rtsp != NULL )
587 RtspUnsetup( p_sys->rtsp );
589 vlc_mutex_destroy( &p_sys->lock_sdp );
590 vlc_mutex_destroy( &p_sys->lock_es );
592 if( p_sys->p_httpd_file )
593 httpd_FileDelete( p_sys->p_httpd_file );
595 if( p_sys->p_httpd_host )
596 httpd_HostDelete( p_sys->p_httpd_host );
598 free( p_sys->psz_sdp );
600 if( p_sys->psz_sdp_file != NULL )
603 unlink( p_sys->psz_sdp_file );
605 free( p_sys->psz_sdp_file );
607 free( p_sys->psz_destination );
611 /*****************************************************************************
613 *****************************************************************************/
614 static void SDPHandleUrl( sout_stream_t *p_stream, const char *psz_url )
616 sout_stream_sys_t *p_sys = p_stream->p_sys;
619 vlc_UrlParse( &url, psz_url, 0 );
620 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
622 if( p_sys->p_httpd_file )
624 msg_Err( p_stream, "you can use sdp=http:// only once" );
628 if( HttpSetup( p_stream, &url ) )
630 msg_Err( p_stream, "cannot export SDP as HTTP" );
633 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
635 if( p_sys->rtsp != NULL )
637 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
641 /* FIXME test if destination is multicast or no destination at all */
642 p_sys->rtsp = RtspSetup( p_stream, &url );
643 if( p_sys->rtsp == NULL )
644 msg_Err( p_stream, "cannot export SDP as RTSP" );
646 if( p_sys->p_mux != NULL )
648 sout_stream_id_t *id = p_sys->es[0];
649 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0, GetDWBE( id->ssrc ),
650 p_sys->psz_destination, p_sys->i_ttl,
651 id->i_port, id->i_port + 1 );
654 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
655 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
657 p_sys->b_export_sap = true;
658 SapSetup( p_stream );
660 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
662 if( p_sys->psz_sdp_file != NULL )
664 msg_Err( p_stream, "you can use sdp=file:// only once" );
667 psz_url = &psz_url[5];
668 if( psz_url[0] == '/' && psz_url[1] == '/' )
670 p_sys->psz_sdp_file = strdup( psz_url );
671 if( p_sys->psz_sdp_file == NULL )
673 decode_URI( p_sys->psz_sdp_file ); /* FIXME? */
674 FileSetup( p_stream );
678 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
683 vlc_UrlClean( &url );
686 /*****************************************************************************
688 *****************************************************************************/
690 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
692 const sout_stream_sys_t *p_sys = p_stream->p_sys;
694 struct sockaddr_storage dst;
698 * When we have a fixed destination (typically when we do multicast),
699 * we need to put the actual port numbers in the SDP.
700 * When there is no fixed destination, we only support RTSP unicast
701 * on-demand setup, so we should rather let the clients decide which ports
703 * When there is both a fixed destination and RTSP unicast, we need to
704 * put port numbers used by the fixed destination, otherwise the SDP would
705 * become totally incorrect for multicast use. It should be noted that
706 * port numbers from SDP with RTSP are only "recommendation" from the
707 * server to the clients (per RFC2326), so only broken clients will fail
708 * to handle this properly. There is no solution but to use two differents
709 * output chain with two different RTSP URLs if you need to handle this
714 if( p_sys->psz_destination != NULL )
718 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
719 dstlen = sizeof( dst );
720 if( p_sys->es[0]->listen.fd != NULL )
721 getsockname( p_sys->es[0]->listen.fd[0],
722 (struct sockaddr *)&dst, &dstlen );
724 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
725 (struct sockaddr *)&dst, &dstlen );
731 /* Dummy destination address for RTSP */
732 memset (&dst, 0, sizeof( struct sockaddr_in ) );
733 dst.ss_family = AF_INET;
737 dstlen = sizeof( struct sockaddr_in );
740 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
741 NULL, 0, (struct sockaddr *)&dst, dstlen );
742 if( psz_sdp == NULL )
745 /* TODO: a=source-filter */
746 if( p_sys->rtcp_mux )
747 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
749 if( rtsp_url != NULL )
750 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
752 /* FIXME: locking?! */
753 for( i = 0; i < p_sys->i_es; i++ )
755 sout_stream_id_t *id = p_sys->es[i];
756 const char *mime_major; /* major MIME type */
757 const char *proto = "RTP/AVP"; /* protocol */
762 mime_major = "video";
765 mime_major = "audio";
774 if( rtsp_url == NULL )
776 switch( p_sys->proto )
781 proto = "TCP/RTP/AVP";
784 proto = "DCCP/RTP/AVP";
786 case IPPROTO_UDPLITE:
791 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
792 id->i_payload_type, false, id->i_bitrate,
793 id->psz_enc, id->i_clock_rate, id->i_channels,
796 if( !p_sys->rtcp_mux && (id->i_port & 1) ) /* cf RFC4566 §5.14 */
797 sdp_AddAttribute ( &psz_sdp, "rtcp", "%u", id->i_port + 1 );
799 if( rtsp_url != NULL )
801 assert( strlen( rtsp_url ) > 0 );
802 bool addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
803 sdp_AddAttribute ( &psz_sdp, "control",
804 addslash ? "%s/trackID=%u" : "%strackID=%u",
809 if( id->listen.fd != NULL )
810 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
811 if( p_sys->proto == IPPROTO_DCCP )
812 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
813 "SC:RTP%c", toupper( mime_major[0] ) );
820 /*****************************************************************************
822 *****************************************************************************/
824 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
826 static const char hex[16] = "0123456789abcdef";
829 for( i = 0; i < i_data; i++ )
831 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
832 s[2*i+1] = hex[(p_data[i] )&0xf];
838 * Shrink the MTU down to a fixed packetization time (for audio).
841 rtp_set_ptime (sout_stream_id_t *id, unsigned ptime_ms, size_t bytes)
843 /* Samples per second */
844 size_t spl = (id->i_clock_rate - 1) * ptime_ms / 1000 + 1;
845 bytes *= id->i_channels;
848 if (spl < rtp_mtu (id)) /* MTU is big enough for ptime */
849 id->i_mtu = 12 + spl;
850 else /* MTU is too small for ptime, align to a sample boundary */
851 id->i_mtu = 12 + (((id->i_mtu - 12) / bytes) * bytes);
854 /** Add an ES as a new RTP stream */
855 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
857 /* NOTE: As a special case, if we use a non-RTP
858 * mux (TS/PS), then p_fmt is NULL. */
859 sout_stream_sys_t *p_sys = p_stream->p_sys;
860 sout_stream_id_t *id;
863 if (0xffffffff == p_sys->payload_bitmap)
865 msg_Err (p_stream, "too many RTP elementary streams");
869 /* Choose the port */
874 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
875 i_port = p_sys->i_port_audio;
877 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
878 i_port = p_sys->i_port_video;
880 /* We do not need the ES lock (p_sys->lock_es) here, because this is the
881 * only one thread that can *modify* the ES table. The ES lock protects
882 * the other threads from our modifications (TAB_APPEND, TAB_REMOVE). */
883 for (int i = 0; i_port && (i < p_sys->i_es); i++)
884 if (i_port == p_sys->es[i]->i_port)
885 i_port = 0; /* Port already in use! */
886 for (uint16_t p = p_sys->i_port; i_port == 0; p += 2)
890 msg_Err (p_stream, "too many RTP elementary streams");
894 for (int i = 0; i_port && (i < p_sys->i_es); i++)
895 if (p == p_sys->es[i]->i_port)
899 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
902 vlc_object_attach( id, p_stream );
904 id->p_stream = p_stream;
906 /* Look for free dymanic payload type */
907 id->i_payload_type = 96;
908 while (p_sys->payload_bitmap & (1 << (id->i_payload_type - 96)))
909 id->i_payload_type++;
910 assert (id->i_payload_type < 128);
912 vlc_rand_bytes (&id->i_sequence, sizeof (id->i_sequence));
913 vlc_rand_bytes (id->ssrc, sizeof (id->ssrc));
917 id->i_clock_rate = 90000; /* most common case for video */
922 id->i_cat = p_fmt->i_cat;
923 if( p_fmt->i_cat == AUDIO_ES )
925 id->i_clock_rate = p_fmt->audio.i_rate;
926 id->i_channels = p_fmt->audio.i_channels;
928 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
932 id->i_cat = VIDEO_ES;
936 id->i_mtu = config_GetInt( p_stream, "mtu" );
937 if( id->i_mtu <= 12 + 16 )
938 id->i_mtu = 576 - 20 - 8; /* pessimistic */
939 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
942 id->pf_packetize = NULL;
944 char *key = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"key");
947 id->srtp = srtp_create (SRTP_ENCR_AES_CM, SRTP_AUTH_HMAC_SHA1, 10,
948 SRTP_PRF_AES_CM, SRTP_RCC_MODE1);
949 if (id->srtp == NULL)
955 char *salt = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"salt");
956 errno = srtp_setkeystring (id->srtp, key, salt ? salt : "");
961 msg_Err (p_stream, "bad SRTP key/salt combination (%m)");
964 id->i_sequence = 0; /* FIXME: awful hack for libvlc_srtp */
967 vlc_mutex_init( &id->lock_sink );
972 id->listen.fd = NULL;
975 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
977 if( p_sys->psz_destination != NULL )
978 switch( p_sys->proto )
985 case VIDEO_ES: code = "RTPV"; break;
986 case AUDIO_ES: code = "RTPARTPV"; break;
987 case SPU_ES: code = "RTPTRTPV"; break;
988 default: code = "RTPORTPV"; break;
990 var_SetString (p_stream, "dccp-service", code);
993 id->listen.fd = net_Listen( VLC_OBJECT(p_stream),
994 p_sys->psz_destination, i_port,
996 if( id->listen.fd == NULL )
998 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
1001 if( vlc_clone( &id->listen.thread, rtp_listen_thread, id,
1002 VLC_THREAD_PRIORITY_LOW ) )
1004 net_ListenClose( id->listen.fd );
1005 id->listen.fd = NULL;
1012 int ttl = (p_sys->i_ttl >= 0) ? p_sys->i_ttl : -1;
1013 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
1014 i_port, ttl, p_sys->proto );
1017 msg_Err( p_stream, "cannot create RTP socket" );
1020 rtp_add_sink( id, fd, p_sys->rtcp_mux );
1026 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
1028 if( psz == NULL ) /* Uho! */
1031 if( strncmp( psz, "ts", 2 ) == 0 )
1033 id->i_payload_type = 33;
1034 id->psz_enc = "MP2T";
1038 id->psz_enc = "MP2P";
1043 switch( p_fmt->i_codec )
1045 case VLC_CODEC_MULAW:
1046 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
1047 id->i_payload_type = 0;
1048 id->psz_enc = "PCMU";
1049 id->pf_packetize = rtp_packetize_split;
1050 rtp_set_ptime (id, 20, 1);
1052 case VLC_CODEC_ALAW:
1053 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
1054 id->i_payload_type = 8;
1055 id->psz_enc = "PCMA";
1056 id->pf_packetize = rtp_packetize_split;
1057 rtp_set_ptime (id, 20, 1);
1059 case VLC_CODEC_S16B:
1060 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
1062 id->i_payload_type = 11;
1064 else if( p_fmt->audio.i_channels == 2 &&
1065 p_fmt->audio.i_rate == 44100 )
1067 id->i_payload_type = 10;
1069 id->psz_enc = "L16";
1070 id->pf_packetize = rtp_packetize_split;
1071 rtp_set_ptime (id, 20, 2);
1075 id->pf_packetize = rtp_packetize_split;
1076 rtp_set_ptime (id, 20, 1);
1078 case VLC_CODEC_MPGA:
1079 id->i_payload_type = 14;
1080 id->psz_enc = "MPA";
1081 id->i_clock_rate = 90000; /* not 44100 */
1082 id->pf_packetize = rtp_packetize_mpa;
1084 case VLC_CODEC_MPGV:
1085 id->i_payload_type = 32;
1086 id->psz_enc = "MPV";
1087 id->pf_packetize = rtp_packetize_mpv;
1089 case VLC_CODEC_ADPCM_G726:
1090 switch( p_fmt->i_bitrate / 1000 )
1093 id->psz_enc = "G726-16";
1094 id->pf_packetize = rtp_packetize_g726_16;
1097 id->psz_enc = "G726-24";
1098 id->pf_packetize = rtp_packetize_g726_24;
1101 id->psz_enc = "G726-32";
1102 id->pf_packetize = rtp_packetize_g726_32;
1105 id->psz_enc = "G726-40";
1106 id->pf_packetize = rtp_packetize_g726_40;
1109 msg_Err( p_stream, "cannot add this stream (unsupported "
1110 "G.726 bit rate: %u)", p_fmt->i_bitrate );
1115 id->psz_enc = "ac3";
1116 id->pf_packetize = rtp_packetize_ac3;
1118 case VLC_CODEC_H263:
1119 id->psz_enc = "H263-1998";
1120 id->pf_packetize = rtp_packetize_h263;
1122 case VLC_CODEC_H264:
1123 id->psz_enc = "H264";
1124 id->pf_packetize = rtp_packetize_h264;
1125 id->psz_fmtp = NULL;
1127 if( p_fmt->i_extra > 0 )
1129 uint8_t *p_buffer = p_fmt->p_extra;
1130 int i_buffer = p_fmt->i_extra;
1131 char *p_64_sps = NULL;
1132 char *p_64_pps = NULL;
1135 while( i_buffer > 4 &&
1136 p_buffer[0] == 0 && p_buffer[1] == 0 &&
1137 p_buffer[2] == 0 && p_buffer[3] == 1 )
1139 const int i_nal_type = p_buffer[4]&0x1f;
1143 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1146 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1148 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1150 /* we found another startcode */
1155 if( i_nal_type == 7 )
1157 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1158 sprintf_hexa( hexa, &p_buffer[5], 3 );
1160 else if( i_nal_type == 8 )
1162 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1168 if( p_64_sps && p_64_pps &&
1169 ( asprintf( &id->psz_fmtp,
1170 "packetization-mode=1;profile-level-id=%s;"
1171 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1172 p_64_pps ) == -1 ) )
1173 id->psz_fmtp = NULL;
1178 id->psz_fmtp = strdup( "packetization-mode=1" );
1181 case VLC_CODEC_MP4V:
1183 char hexa[2*p_fmt->i_extra +1];
1185 id->psz_enc = "MP4V-ES";
1186 id->pf_packetize = rtp_packetize_split;
1187 if( p_fmt->i_extra > 0 )
1189 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1190 if( asprintf( &id->psz_fmtp,
1191 "profile-level-id=3; config=%s;", hexa ) == -1 )
1192 id->psz_fmtp = NULL;
1196 case VLC_CODEC_MP4A:
1200 char hexa[2*p_fmt->i_extra +1];
1202 id->psz_enc = "mpeg4-generic";
1203 id->pf_packetize = rtp_packetize_mp4a;
1204 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1205 if( asprintf( &id->psz_fmtp,
1206 "streamtype=5; profile-level-id=15; "
1207 "mode=AAC-hbr; config=%s; SizeLength=13; "
1208 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1210 id->psz_fmtp = NULL;
1216 unsigned char config[6];
1217 unsigned int aacsrates[15] = {
1218 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1219 16000, 12000, 11025, 8000, 7350, 0, 0 };
1221 for( i = 0; i < 15; i++ )
1222 if( p_fmt->audio.i_rate == aacsrates[i] )
1228 config[3]=p_fmt->audio.i_channels<<4;
1232 id->psz_enc = "MP4A-LATM";
1233 id->pf_packetize = rtp_packetize_mp4a_latm;
1234 sprintf_hexa( hexa, config, 6 );
1235 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1236 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1237 id->psz_fmtp = NULL;
1241 case VLC_CODEC_AMR_NB:
1242 id->psz_enc = "AMR";
1243 id->psz_fmtp = strdup( "octet-align=1" );
1244 id->pf_packetize = rtp_packetize_amr;
1246 case VLC_CODEC_AMR_WB:
1247 id->psz_enc = "AMR-WB";
1248 id->psz_fmtp = strdup( "octet-align=1" );
1249 id->pf_packetize = rtp_packetize_amr;
1251 case VLC_CODEC_SPEEX:
1252 id->psz_enc = "SPEEX";
1253 id->pf_packetize = rtp_packetize_spx;
1255 case VLC_CODEC_ITU_T140:
1256 id->psz_enc = "t140" ;
1257 id->i_clock_rate = 1000;
1258 id->pf_packetize = rtp_packetize_t140;
1262 msg_Err( p_stream, "cannot add this stream (unsupported "
1263 "codec: %4.4s)", (char*)&p_fmt->i_codec );
1266 if (id->i_payload_type >= 96)
1267 /* Mark dynamic payload type in use */
1268 p_sys->payload_bitmap |= 1 << (id->i_payload_type - 96);
1270 #if 0 /* No payload formats sets this at the moment */
1273 cscov += 8 /* UDP */ + 12 /* RTP */;
1275 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1278 if( p_sys->rtsp != NULL )
1279 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1280 GetDWBE( id->ssrc ),
1281 p_sys->psz_destination,
1282 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1284 id->p_fifo = block_FifoNew();
1285 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1286 VLC_THREAD_PRIORITY_HIGHEST ) )
1289 /* Update p_sys context */
1290 vlc_mutex_lock( &p_sys->lock_es );
1291 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1292 vlc_mutex_unlock( &p_sys->lock_es );
1294 psz_sdp = SDPGenerate( p_stream, NULL );
1296 vlc_mutex_lock( &p_sys->lock_sdp );
1297 free( p_sys->psz_sdp );
1298 p_sys->psz_sdp = psz_sdp;
1299 vlc_mutex_unlock( &p_sys->lock_sdp );
1301 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1303 /* Update SDP (sap/file) */
1304 if( p_sys->b_export_sap ) SapSetup( p_stream );
1305 if( p_sys->psz_sdp_file != NULL ) FileSetup( p_stream );
1310 Del( p_stream, id );
1314 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1316 sout_stream_sys_t *p_sys = p_stream->p_sys;
1318 if( id->p_fifo != NULL )
1320 vlc_object_kill( id );
1321 vlc_thread_join( id );
1322 block_FifoRelease( id->p_fifo );
1325 vlc_mutex_lock( &p_sys->lock_es );
1326 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1327 vlc_mutex_unlock( &p_sys->lock_es );
1329 /* Release dynamic payload type */
1330 if (id->i_payload_type >= 96)
1331 p_sys->payload_bitmap &= ~(1 << (id->i_payload_type - 96));
1333 free( id->psz_fmtp );
1336 RtspDelId( p_sys->rtsp, id->rtsp_id );
1338 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1339 if( id->listen.fd != NULL )
1341 vlc_cancel( id->listen.thread );
1342 vlc_join( id->listen.thread, NULL );
1343 net_ListenClose( id->listen.fd );
1345 if( id->srtp != NULL )
1346 srtp_destroy( id->srtp );
1348 vlc_mutex_destroy( &id->lock_sink );
1350 /* Update SDP (sap/file) */
1351 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1352 if( p_sys->psz_sdp_file != NULL ) FileSetup( p_stream );
1354 vlc_object_detach( id );
1355 vlc_object_release( id );
1359 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1364 assert( p_stream->p_sys->p_mux == NULL );
1367 while( p_buffer != NULL )
1369 p_next = p_buffer->p_next;
1370 if( id->pf_packetize( id, p_buffer ) )
1373 block_Release( p_buffer );
1379 /****************************************************************************
1381 ****************************************************************************/
1382 static int SapSetup( sout_stream_t *p_stream )
1384 sout_stream_sys_t *p_sys = p_stream->p_sys;
1385 sout_instance_t *p_sout = p_stream->p_sout;
1387 /* Remove the previous session */
1388 if( p_sys->p_session != NULL)
1390 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1391 p_sys->p_session = NULL;
1394 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1396 announce_method_t *p_method = sout_SAPMethod();
1397 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1399 p_sys->psz_destination,
1401 sout_MethodRelease( p_method );
1407 /****************************************************************************
1409 ****************************************************************************/
1410 static int FileSetup( sout_stream_t *p_stream )
1412 sout_stream_sys_t *p_sys = p_stream->p_sys;
1415 if( p_sys->psz_sdp == NULL )
1416 return VLC_EGENERIC; /* too early */
1418 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1420 msg_Err( p_stream, "cannot open file '%s' (%m)",
1421 p_sys->psz_sdp_file );
1422 return VLC_EGENERIC;
1425 fputs( p_sys->psz_sdp, f );
1431 /****************************************************************************
1433 ****************************************************************************/
1434 static int HttpCallback( httpd_file_sys_t *p_args,
1435 httpd_file_t *, uint8_t *p_request,
1436 uint8_t **pp_data, int *pi_data );
1438 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t *url)
1440 sout_stream_sys_t *p_sys = p_stream->p_sys;
1442 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1443 url->i_port > 0 ? url->i_port : 80 );
1444 if( p_sys->p_httpd_host )
1446 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1447 url->psz_path ? url->psz_path : "/",
1450 HttpCallback, (void*)p_sys );
1452 if( p_sys->p_httpd_file == NULL )
1454 return VLC_EGENERIC;
1459 static int HttpCallback( httpd_file_sys_t *p_args,
1460 httpd_file_t *f, uint8_t *p_request,
1461 uint8_t **pp_data, int *pi_data )
1463 VLC_UNUSED(f); VLC_UNUSED(p_request);
1464 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1466 vlc_mutex_lock( &p_sys->lock_sdp );
1467 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1469 *pi_data = strlen( p_sys->psz_sdp );
1470 *pp_data = malloc( *pi_data );
1471 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1478 vlc_mutex_unlock( &p_sys->lock_sdp );
1483 /****************************************************************************
1485 ****************************************************************************/
1486 static void* ThreadSend( vlc_object_t *p_this )
1489 # define ECONNREFUSED WSAECONNREFUSED
1490 # define ENOPROTOOPT WSAENOPROTOOPT
1491 # define EHOSTUNREACH WSAEHOSTUNREACH
1492 # define ENETUNREACH WSAENETUNREACH
1493 # define ENETDOWN WSAENETDOWN
1494 # define ENOBUFS WSAENOBUFS
1495 # define EAGAIN WSAEWOULDBLOCK
1496 # define EWOULDBLOCK WSAEWOULDBLOCK
1498 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1499 unsigned i_caching = id->i_caching;
1503 block_t *out = block_FifoGet( id->p_fifo );
1504 block_cleanup_push (out);
1507 { /* FIXME: this is awfully inefficient */
1508 size_t len = out->i_buffer;
1509 out = block_Realloc( out, 0, len + 10 );
1510 out->i_buffer = len;
1512 int canc = vlc_savecancel ();
1513 int val = srtp_send( id->srtp, out->p_buffer, &len, len + 10 );
1514 vlc_restorecancel (canc);
1518 msg_Dbg( id, "SRTP sending error: %m" );
1519 block_Release( out );
1523 out->i_buffer = len;
1527 mwait (out->i_dts + i_caching);
1532 ssize_t len = out->i_buffer;
1533 int canc = vlc_savecancel ();
1535 vlc_mutex_lock( &id->lock_sink );
1536 unsigned deadc = 0; /* How many dead sockets? */
1537 int deadv[id->sinkc]; /* Dead sockets list */
1539 for( int i = 0; i < id->sinkc; i++ )
1541 if( !id->srtp ) /* FIXME: SRTCP support */
1542 SendRTCP( id->sinkv[i].rtcp, out );
1544 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1548 /* Soft errors (e.g. ICMP): */
1549 case ECONNREFUSED: /* Port unreachable */
1552 case EPROTO: /* Protocol unreachable */
1554 case EHOSTUNREACH: /* Host unreachable */
1555 case ENETUNREACH: /* Network unreachable */
1556 case ENETDOWN: /* Entire network down */
1557 send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 );
1558 /* Transient congestion: */
1559 case ENOMEM: /* out of socket buffers */
1562 #if (EAGAIN != EWOULDBLOCK)
1568 deadv[deadc++] = id->sinkv[i].rtp_fd;
1570 vlc_mutex_unlock( &id->lock_sink );
1571 block_Release( out );
1573 for( unsigned i = 0; i < deadc; i++ )
1575 msg_Dbg( id, "removing socket %d", deadv[i] );
1576 rtp_del_sink( id, deadv[i] );
1578 vlc_restorecancel (canc);
1584 /* This thread dequeues incoming connections (DCCP streaming) */
1585 static void *rtp_listen_thread( void *data )
1587 sout_stream_id_t *id = data;
1589 assert( id->listen.fd != NULL );
1593 int fd = net_Accept( id, id->listen.fd );
1596 int canc = vlc_savecancel( );
1597 rtp_add_sink( id, fd, true );
1598 vlc_restorecancel( canc );
1605 int rtp_add_sink( sout_stream_id_t *id, int fd, bool rtcp_mux )
1607 rtp_sink_t sink = { fd, NULL };
1608 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1610 if( sink.rtcp == NULL )
1611 msg_Err( id, "RTCP failed!" );
1613 vlc_mutex_lock( &id->lock_sink );
1614 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1615 vlc_mutex_unlock( &id->lock_sink );
1619 void rtp_del_sink( sout_stream_id_t *id, int fd )
1621 rtp_sink_t sink = { fd, NULL };
1623 /* NOTE: must be safe to use if fd is not included */
1624 vlc_mutex_lock( &id->lock_sink );
1625 for( int i = 0; i < id->sinkc; i++ )
1627 if (id->sinkv[i].rtp_fd == fd)
1629 sink = id->sinkv[i];
1630 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1634 vlc_mutex_unlock( &id->lock_sink );
1636 CloseRTCP( sink.rtcp );
1637 net_Close( sink.rtp_fd );
1640 uint16_t rtp_get_seq( const sout_stream_id_t *id )
1642 /* This will return values for the next packet.
1643 * Accounting for caching would not be totally trivial. */
1644 return id->i_sequence;
1647 /* FIXME: this is pretty bad - if we remove and then insert an ES
1648 * the number will get unsynched from inside RTSP */
1649 unsigned rtp_get_num( const sout_stream_id_t *id )
1651 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1654 vlc_mutex_lock( &p_sys->lock_es );
1655 for( i = 0; i < p_sys->i_es; i++ )
1657 if( id == p_sys->es[i] )
1660 vlc_mutex_unlock( &p_sys->lock_es );
1666 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1667 int b_marker, int64_t i_pts )
1669 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / CLOCK_FREQ;
1671 out->p_buffer[0] = 0x80;
1672 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1673 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1674 out->p_buffer[3] = ( id->i_sequence )&0xff;
1675 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1676 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1677 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1678 out->p_buffer[7] = ( i_timestamp )&0xff;
1680 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1686 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1688 block_FifoPut( id->p_fifo, out );
1692 * @return configured max RTP payload size (including payload type-specific
1693 * headers, excluding RTP and transport headers)
1695 size_t rtp_mtu (const sout_stream_id_t *id)
1697 return id->i_mtu - 12;
1700 /*****************************************************************************
1702 *****************************************************************************/
1704 /** Add an ES to a non-RTP muxed stream */
1705 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1707 sout_input_t *p_input;
1708 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1709 assert( p_mux != NULL );
1711 p_input = sout_MuxAddStream( p_mux, p_fmt );
1712 if( p_input == NULL )
1714 msg_Err( p_stream, "cannot add this stream to the muxer" );
1718 return (sout_stream_id_t *)p_input;
1722 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1725 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1726 assert( p_mux != NULL );
1728 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1733 /** Remove an ES from a non-RTP muxed stream */
1734 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1736 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1737 assert( p_mux != NULL );
1739 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1744 static ssize_t AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1745 const block_t *p_buffer )
1747 sout_stream_sys_t *p_sys = p_stream->p_sys;
1748 sout_stream_id_t *id = p_sys->es[0];
1750 int64_t i_dts = p_buffer->i_dts;
1752 uint8_t *p_data = p_buffer->p_buffer;
1753 size_t i_data = p_buffer->i_buffer;
1754 size_t i_max = id->i_mtu - 12;
1756 size_t i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1762 /* output complete packet */
1763 if( p_sys->packet &&
1764 p_sys->packet->i_buffer + i_data > i_max )
1766 rtp_packetize_send( id, p_sys->packet );
1767 p_sys->packet = NULL;
1770 if( p_sys->packet == NULL )
1772 /* allocate a new packet */
1773 p_sys->packet = block_New( p_stream, id->i_mtu );
1774 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1775 p_sys->packet->i_dts = i_dts;
1776 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1777 i_dts += p_sys->packet->i_length;
1780 i_size = __MIN( i_data,
1781 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1783 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1786 p_sys->packet->i_buffer += i_size;
1795 static ssize_t AccessOutGrabberWrite( sout_access_out_t *p_access,
1798 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1804 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1806 p_next = p_buffer->p_next;
1807 block_Release( p_buffer );
1815 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1817 sout_access_out_t *p_grab;
1819 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1820 if( p_grab == NULL )
1823 p_grab->p_module = NULL;
1824 p_grab->psz_access = strdup( "grab" );
1825 p_grab->p_cfg = NULL;
1826 p_grab->psz_path = strdup( "" );
1827 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1828 p_grab->pf_seek = NULL;
1829 p_grab->pf_write = AccessOutGrabberWrite;
1830 vlc_object_attach( p_grab, p_stream );