1 /*****************************************************************************
2 * rtp.c: rtp stream output module
3 *****************************************************************************
4 * Copyright (C) 2003-2004 the VideoLAN team
5 * Copyright © 2007 Rémi Denis-Courmont
8 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
35 #include <vlc_block.h>
37 #include <vlc_httpd.h>
39 #include <vlc_network.h>
40 #include <vlc_charset.h>
41 #include <vlc_strings.h>
46 # include <sys/types.h>
49 # include <sys/stat.h>
51 #ifdef HAVE_LINUX_DCCP_H
52 # include <linux/dccp.h>
55 # define IPPROTO_DCCP 33
57 #ifndef IPPROTO_UDPLITE
58 # define IPPROTO_UDPLITE 136
63 /*****************************************************************************
65 *****************************************************************************/
67 #define DST_TEXT N_("Destination")
68 #define DST_LONGTEXT N_( \
69 "This is the output URL that will be used." )
70 #define SDP_TEXT N_("SDP")
71 #define SDP_LONGTEXT N_( \
72 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
73 "session will be made available. You must use an url: http://location to " \
74 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
75 "for the SDP to be announced via SAP." )
76 #define MUX_TEXT N_("Muxer")
77 #define MUX_LONGTEXT N_( \
78 "This allows you to specify the muxer used for the streaming output. " \
79 "Default is to use no muxer (standard RTP stream)." )
81 #define NAME_TEXT N_("Session name")
82 #define NAME_LONGTEXT N_( \
83 "This is the name of the session that will be announced in the SDP " \
84 "(Session Descriptor)." )
85 #define DESC_TEXT N_("Session description")
86 #define DESC_LONGTEXT N_( \
87 "This allows you to give a short description with details about the stream, " \
88 "that will be announced in the SDP (Session Descriptor)." )
89 #define URL_TEXT N_("Session URL")
90 #define URL_LONGTEXT N_( \
91 "This allows you to give an URL with more details about the stream " \
92 "(often the website of the streaming organization), that will " \
93 "be announced in the SDP (Session Descriptor)." )
94 #define EMAIL_TEXT N_("Session email")
95 #define EMAIL_LONGTEXT N_( \
96 "This allows you to give a contact mail address for the stream, that will " \
97 "be announced in the SDP (Session Descriptor)." )
98 #define PHONE_TEXT N_("Session phone number")
99 #define PHONE_LONGTEXT N_( \
100 "This allows you to give a contact telephone number for the stream, that will " \
101 "be announced in the SDP (Session Descriptor)." )
103 #define PORT_TEXT N_("Port")
104 #define PORT_LONGTEXT N_( \
105 "This allows you to specify the base port for the RTP streaming." )
106 #define PORT_AUDIO_TEXT N_("Audio port")
107 #define PORT_AUDIO_LONGTEXT N_( \
108 "This allows you to specify the default audio port for the RTP streaming." )
109 #define PORT_VIDEO_TEXT N_("Video port")
110 #define PORT_VIDEO_LONGTEXT N_( \
111 "This allows you to specify the default video port for the RTP streaming." )
113 #define TTL_TEXT N_("Hop limit (TTL)")
114 #define TTL_LONGTEXT N_( \
115 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
116 "the multicast packets sent by the stream output (0 = use operating " \
117 "system built-in default).")
119 #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
120 #define RTCP_MUX_LONGTEXT N_( \
121 "This sends and receives RTCP packet multiplexed over the same port " \
124 #define DCCP_TEXT N_("DCCP transport")
125 #define DCCP_LONGTEXT N_( \
126 "This enables DCCP instead of UDP as a transport for RTP." )
127 #define TCP_TEXT N_("TCP transport")
128 #define TCP_LONGTEXT N_( \
129 "This enables TCP instead of UDP as a transport for RTP." )
130 #define UDP_LITE_TEXT N_("UDP-Lite transport")
131 #define UDP_LITE_LONGTEXT N_( \
132 "This enables UDP-Lite instead of UDP as a transport for RTP." )
134 #define RFC3016_TEXT N_("MP4A LATM")
135 #define RFC3016_LONGTEXT N_( \
136 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
138 static int Open ( vlc_object_t * );
139 static void Close( vlc_object_t * );
141 #define SOUT_CFG_PREFIX "sout-rtp-"
142 #define MAX_EMPTY_BLOCKS 200
145 set_shortname( _("RTP"));
146 set_description( _("RTP stream output") );
147 set_capability( "sout stream", 0 );
148 add_shortcut( "rtp" );
149 set_category( CAT_SOUT );
150 set_subcategory( SUBCAT_SOUT_STREAM );
152 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DST_TEXT,
153 DST_LONGTEXT, VLC_TRUE );
155 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
156 SDP_LONGTEXT, VLC_TRUE );
157 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
158 MUX_LONGTEXT, VLC_TRUE );
160 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
161 NAME_LONGTEXT, VLC_TRUE );
162 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
163 DESC_LONGTEXT, VLC_TRUE );
164 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
165 URL_LONGTEXT, VLC_TRUE );
166 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
167 EMAIL_LONGTEXT, VLC_TRUE );
168 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
169 PHONE_LONGTEXT, VLC_TRUE );
171 add_integer( SOUT_CFG_PREFIX "port", 1234, NULL, PORT_TEXT,
172 PORT_LONGTEXT, VLC_TRUE );
173 add_integer( SOUT_CFG_PREFIX "port-audio", 1230, NULL, PORT_AUDIO_TEXT,
174 PORT_AUDIO_LONGTEXT, VLC_TRUE );
175 add_integer( SOUT_CFG_PREFIX "port-video", 1232, NULL, PORT_VIDEO_TEXT,
176 PORT_VIDEO_LONGTEXT, VLC_TRUE );
178 add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
179 TTL_LONGTEXT, VLC_TRUE );
181 add_bool( SOUT_CFG_PREFIX "rtcp-mux", VLC_FALSE, NULL,
182 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, VLC_FALSE );
184 add_bool( SOUT_CFG_PREFIX "dccp", VLC_FALSE, NULL,
185 DCCP_TEXT, DCCP_LONGTEXT, VLC_FALSE );
186 add_bool( SOUT_CFG_PREFIX "tcp", VLC_FALSE, NULL,
187 TCP_TEXT, TCP_LONGTEXT, VLC_FALSE );
188 add_bool( SOUT_CFG_PREFIX "udplite", VLC_FALSE, NULL,
189 UDP_LITE_TEXT, UDP_LITE_LONGTEXT, VLC_FALSE );
191 add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
192 RFC3016_LONGTEXT, VLC_FALSE );
194 set_callbacks( Open, Close );
197 /*****************************************************************************
198 * Exported prototypes
199 *****************************************************************************/
200 static const char *ppsz_sout_options[] = {
201 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
202 "description", "url", "email", "phone",
203 "rtcp-mux", "dccp", "tcp", "udplite",
207 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
208 static int Del ( sout_stream_t *, sout_stream_id_t * );
209 static int Send( sout_stream_t *, sout_stream_id_t *,
211 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
212 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
213 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
216 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
217 static void ThreadSend( vlc_object_t *p_this );
219 static void SDPHandleUrl( sout_stream_t *, char * );
221 static int SapSetup( sout_stream_t *p_stream );
222 static int FileSetup( sout_stream_t *p_stream );
223 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t * );
225 struct sout_stream_sys_t
229 vlc_mutex_t lock_sdp;
232 vlc_bool_t b_export_sdp_file;
236 vlc_bool_t b_export_sap;
237 session_descriptor_t *p_session;
240 httpd_host_t *p_httpd_host;
241 httpd_file_t *p_httpd_file;
247 char *psz_destination;
251 uint16_t i_port_audio;
252 uint16_t i_port_video;
256 /* when need to use a private one or when using muxer */
259 /* in case we do TS/PS over rtp */
261 sout_access_out_t *p_grab;
267 sout_stream_id_t **es;
270 typedef int (*pf_rtp_packetizer_t)( sout_stream_t *, sout_stream_id_t *,
273 typedef struct rtp_sink_t
279 struct sout_stream_id_t
283 sout_stream_t *p_stream;
286 uint8_t i_payload_type;
298 /* Packetizer specific fields */
299 pf_rtp_packetizer_t pf_packetize;
303 vlc_mutex_t lock_sink;
306 rtsp_stream_id_t *rtsp_id;
309 block_fifo_t *p_fifo;
314 /*****************************************************************************
316 *****************************************************************************/
317 static int Open( vlc_object_t *p_this )
319 sout_stream_t *p_stream = (sout_stream_t*)p_this;
320 sout_instance_t *p_sout = p_stream->p_sout;
321 sout_stream_sys_t *p_sys = NULL;
322 config_chain_t *p_cfg = NULL;
324 vlc_bool_t b_rtsp = VLC_FALSE;
326 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
327 ppsz_sout_options, p_stream->p_cfg );
329 p_sys = malloc( sizeof( sout_stream_sys_t ) );
333 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
335 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
336 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
337 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
338 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
340 p_sys->psz_sdp_file = NULL;
342 if( p_sys->i_port_audio == p_sys->i_port_video )
344 msg_Err( p_stream, "audio and video port cannot be the same" );
345 p_sys->i_port_audio = 0;
346 p_sys->i_port_video = 0;
349 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
351 if( !strcmp( p_cfg->psz_name, "sdp" )
352 && ( p_cfg->psz_value != NULL )
353 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
361 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
364 if( !strncasecmp( psz, "rtsp:", 5 ) )
370 /* Transport protocol */
371 p_sys->proto = IPPROTO_UDP;
373 if( var_GetBool( p_stream, SOUT_CFG_PREFIX "dccp" ) )
375 p_sys->proto = IPPROTO_DCCP;
376 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
380 if( var_GetBool( p_stream, SOUT_CFG_PREFIX "tcp" ) )
382 p_sys->proto = IPPROTO_TCP;
383 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
387 if( var_GetBool( p_stream, SOUT_CFG_PREFIX "udplite" ) )
388 p_sys->proto = IPPROTO_UDPLITE;
390 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
392 msg_Err( p_stream, "missing destination and not in RTSP mode" );
397 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
398 if( p_sys->i_ttl == 0 )
400 /* Normally, we should let the default hop limit up to the core,
401 * but we have to know it to build our SDP properly, which is why
402 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
404 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
407 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
409 p_sys->i_payload_type = 96;
413 p_sys->psz_sdp = NULL;
415 p_sys->b_export_sap = VLC_FALSE;
416 p_sys->b_export_sdp_file = VLC_FALSE;
417 p_sys->p_session = NULL;
419 p_sys->p_httpd_host = NULL;
420 p_sys->p_httpd_file = NULL;
422 p_stream->p_sys = p_sys;
424 vlc_mutex_init( p_stream, &p_sys->lock_sdp );
425 vlc_mutex_init( p_stream, &p_sys->lock_es );
427 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
430 sout_stream_id_t *id;
432 /* Check muxer type */
433 if( strncasecmp( psz, "ps", 2 )
434 && strncasecmp( psz, "mpeg1", 5 )
435 && strncasecmp( psz, "ts", 2 ) )
437 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
439 vlc_mutex_destroy( &p_sys->lock_sdp );
440 vlc_mutex_destroy( &p_sys->lock_es );
445 p_sys->p_grab = GrabberCreate( p_stream );
446 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
449 if( p_sys->p_mux == NULL )
451 msg_Err( p_stream, "cannot create muxer" );
452 sout_AccessOutDelete( p_sys->p_grab );
453 vlc_mutex_destroy( &p_sys->lock_sdp );
454 vlc_mutex_destroy( &p_sys->lock_es );
459 id = Add( p_stream, NULL );
462 sout_MuxDelete( p_sys->p_mux );
463 sout_AccessOutDelete( p_sys->p_grab );
464 vlc_mutex_destroy( &p_sys->lock_sdp );
465 vlc_mutex_destroy( &p_sys->lock_es );
470 p_sys->packet = NULL;
472 p_stream->pf_add = MuxAdd;
473 p_stream->pf_del = MuxDel;
474 p_stream->pf_send = MuxSend;
479 p_sys->p_grab = NULL;
481 p_stream->pf_add = Add;
482 p_stream->pf_del = Del;
483 p_stream->pf_send = Send;
486 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
489 config_chain_t *p_cfg;
491 SDPHandleUrl( p_stream, psz );
493 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
495 if( !strcmp( p_cfg->psz_name, "sdp" ) )
497 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
500 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
501 if( !strcmp( p_cfg->psz_value, psz ) )
504 SDPHandleUrl( p_stream, p_cfg->psz_value );
510 /* update p_sout->i_out_pace_nocontrol */
511 p_stream->p_sout->i_out_pace_nocontrol++;
516 /*****************************************************************************
518 *****************************************************************************/
519 static void Close( vlc_object_t * p_this )
521 sout_stream_t *p_stream = (sout_stream_t*)p_this;
522 sout_stream_sys_t *p_sys = p_stream->p_sys;
524 /* update p_sout->i_out_pace_nocontrol */
525 p_stream->p_sout->i_out_pace_nocontrol--;
529 assert( p_sys->i_es == 1 );
530 Del( p_stream, p_sys->es[0] );
532 sout_MuxDelete( p_sys->p_mux );
533 sout_AccessOutDelete( p_sys->p_grab );
536 block_Release( p_sys->packet );
538 if( p_sys->b_export_sap )
541 SapSetup( p_stream );
545 if( p_sys->rtsp != NULL )
546 RtspUnsetup( p_sys->rtsp );
548 vlc_mutex_destroy( &p_sys->lock_sdp );
549 vlc_mutex_destroy( &p_sys->lock_es );
551 if( p_sys->p_httpd_file )
552 httpd_FileDelete( p_sys->p_httpd_file );
554 if( p_sys->p_httpd_host )
555 httpd_HostDelete( p_sys->p_httpd_host );
557 free( p_sys->psz_sdp );
559 if( p_sys->b_export_sdp_file )
562 unlink( p_sys->psz_sdp_file );
564 free( p_sys->psz_sdp_file );
566 free( p_sys->psz_destination );
570 /*****************************************************************************
572 *****************************************************************************/
573 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
575 sout_stream_sys_t *p_sys = p_stream->p_sys;
578 vlc_UrlParse( &url, psz_url, 0 );
579 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
581 if( p_sys->p_httpd_file )
583 msg_Err( p_stream, "you can use sdp=http:// only once" );
587 if( HttpSetup( p_stream, &url ) )
589 msg_Err( p_stream, "cannot export SDP as HTTP" );
592 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
594 if( p_sys->rtsp != NULL )
596 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
600 /* FIXME test if destination is multicast or no destination at all */
601 p_sys->rtsp = RtspSetup( p_stream, &url );
602 if( p_sys->rtsp == NULL )
604 msg_Err( p_stream, "cannot export SDP as RTSP" );
607 if( p_sys->p_mux != NULL )
609 sout_stream_id_t *id = p_sys->es[0];
610 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0, GetDWBE( id->ssrc ),
611 p_sys->psz_destination, p_sys->i_ttl,
612 id->i_port, id->i_port + 1 );
615 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
616 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
618 p_sys->b_export_sap = VLC_TRUE;
619 SapSetup( p_stream );
621 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
623 if( p_sys->b_export_sdp_file )
625 msg_Err( p_stream, "you can use sdp=file:// only once" );
628 p_sys->b_export_sdp_file = VLC_TRUE;
629 psz_url = &psz_url[5];
630 if( psz_url[0] == '/' && psz_url[1] == '/' )
632 p_sys->psz_sdp_file = strdup( psz_url );
636 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
641 vlc_UrlClean( &url );
644 /*****************************************************************************
646 *****************************************************************************/
648 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
650 const sout_stream_sys_t *p_sys = p_stream->p_sys;
652 struct sockaddr_storage dst;
656 * When we have a fixed destination (typically when we do multicast),
657 * we need to put the actual port numbers in the SDP.
658 * When there is no fixed destination, we only support RTSP unicast
659 * on-demand setup, so we should rather let the clients decide which ports
661 * When there is both a fixed destination and RTSP unicast, we need to
662 * put port numbers used by the fixed destination, otherwise the SDP would
663 * become totally incorrect for multicast use. It should be noted that
664 * port numbers from SDP with RTSP are only "recommendation" from the
665 * server to the clients (per RFC2326), so only broken clients will fail
666 * to handle this properly. There is no solution but to use two differents
667 * output chain with two different RTSP URLs if you need to handle this
672 if( p_sys->psz_destination != NULL )
676 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
677 dstlen = sizeof( dst );
678 if( p_sys->es[0]->listen_fd != NULL )
679 getsockname( p_sys->es[0]->listen_fd[0],
680 (struct sockaddr *)&dst, &dstlen );
682 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
683 (struct sockaddr *)&dst, &dstlen );
689 /* Dummy destination address for RTSP */
690 memset (&dst, 0, sizeof( struct sockaddr_in ) );
691 dst.ss_family = AF_INET;
695 dstlen = sizeof( struct sockaddr_in );
698 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
699 NULL, 0, (struct sockaddr *)&dst, dstlen );
700 if( psz_sdp == NULL )
703 /* TODO: a=source-filter */
704 if( p_sys->rtcp_mux )
705 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
707 if( rtsp_url != NULL )
708 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
710 /* FIXME: locking?! */
711 for( i = 0; i < p_sys->i_es; i++ )
713 sout_stream_id_t *id = p_sys->es[i];
714 const char *mime_major; /* major MIME type */
715 const char *proto = "RTP/AVP"; /* protocol */
720 mime_major = "video";
723 mime_major = "audio";
732 if( rtsp_url == NULL )
734 switch( p_sys->proto )
739 proto = "TCP/RTP/AVP";
742 proto = "DCCP/RTP/AVP";
744 case IPPROTO_UDPLITE:
749 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
750 id->i_payload_type, VLC_FALSE, id->i_bitrate,
751 id->psz_enc, id->i_clock_rate, id->i_channels,
754 if( rtsp_url != NULL )
756 assert( strlen( rtsp_url ) > 0 );
757 vlc_bool_t addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
758 sdp_AddAttribute ( &psz_sdp, "control",
759 addslash ? "%s/trackID=%u" : "%strackID=%u",
764 if( id->listen_fd != NULL )
765 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
767 if( p_sys->proto == IPPROTO_DCCP )
768 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
769 "SC:RTP%c", toupper( mime_major[0] ) );
777 /*****************************************************************************
779 *****************************************************************************/
781 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
783 static const char hex[16] = "0123456789abcdef";
786 for( i = 0; i < i_data; i++ )
788 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
789 s[2*i+1] = hex[(p_data[i] )&0xf];
795 /** Add an ES as a new RTP stream */
796 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
798 /* NOTE: As a special case, if we use a non-RTP
799 * mux (TS/PS), then p_fmt is NULL. */
800 sout_stream_sys_t *p_sys = p_stream->p_sys;
801 sout_stream_id_t *id;
802 int i_port, cscov = -1;
805 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
808 vlc_object_attach( id, p_stream );
810 /* Choose the port */
815 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
817 i_port = p_sys->i_port_audio;
818 p_sys->i_port_audio = 0;
821 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
823 i_port = p_sys->i_port_video;
824 p_sys->i_port_video = 0;
829 if( p_sys->i_port != p_sys->i_port_audio
830 && p_sys->i_port != p_sys->i_port_video )
832 i_port = p_sys->i_port;
839 id->p_stream = p_stream;
841 id->i_sequence = rand()&0xffff;
842 id->i_payload_type = p_sys->i_payload_type;
843 id->ssrc[0] = rand()&0xff;
844 id->ssrc[1] = rand()&0xff;
845 id->ssrc[2] = rand()&0xff;
846 id->ssrc[3] = rand()&0xff;
850 id->i_clock_rate = 90000; /* most common case for video */
855 id->i_cat = p_fmt->i_cat;
856 if( p_fmt->i_cat == AUDIO_ES )
858 id->i_clock_rate = p_fmt->audio.i_rate;
859 id->i_channels = p_fmt->audio.i_channels;
861 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
865 id->i_cat = VIDEO_ES;
869 id->pf_packetize = NULL;
870 id->i_mtu = config_GetInt( p_stream, "mtu" );
871 if( id->i_mtu <= 12 + 16 )
872 id->i_mtu = 576 - 20 - 8; /* pessimistic */
874 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
876 vlc_mutex_init( p_stream, &id->lock_sink );
881 id->listen_fd = NULL;
884 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
886 if( p_sys->psz_destination != NULL )
887 switch( p_sys->proto )
891 id->listen_fd = net_Listen( VLC_OBJECT(p_stream),
892 p_sys->psz_destination, i_port,
894 if( id->listen_fd == NULL )
896 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
903 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
904 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
905 i_port, ttl, p_sys->proto );
908 msg_Err( p_stream, "cannot create RTP socket" );
911 rtp_add_sink( id, fd, p_sys->rtcp_mux );
917 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
919 if( psz == NULL ) /* Uho! */
922 if( strncmp( psz, "ts", 2 ) == 0 )
924 id->i_payload_type = 33;
925 id->psz_enc = "MP2T";
929 id->psz_enc = "MP2P";
933 switch( p_fmt->i_codec )
935 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
936 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
937 id->i_payload_type = 0;
938 id->psz_enc = "PCMU";
939 id->pf_packetize = rtp_packetize_l8;
941 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
942 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
943 id->i_payload_type = 8;
944 id->psz_enc = "PCMA";
945 id->pf_packetize = rtp_packetize_l8;
947 case VLC_FOURCC( 's', '1', '6', 'b' ):
948 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
950 id->i_payload_type = 11;
952 else if( p_fmt->audio.i_channels == 2 &&
953 p_fmt->audio.i_rate == 44100 )
955 id->i_payload_type = 10;
958 id->pf_packetize = rtp_packetize_l16;
960 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
962 id->pf_packetize = rtp_packetize_l8;
964 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
965 id->i_payload_type = 14;
967 id->pf_packetize = rtp_packetize_mpa;
969 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
970 id->i_payload_type = 32;
972 id->pf_packetize = rtp_packetize_mpv;
974 case VLC_FOURCC( 'a', '5', '2', ' ' ):
976 id->pf_packetize = rtp_packetize_ac3;
978 case VLC_FOURCC( 'H', '2', '6', '3' ):
979 id->psz_enc = "H263-1998";
980 id->pf_packetize = rtp_packetize_h263;
982 case VLC_FOURCC( 'h', '2', '6', '4' ):
983 id->psz_enc = "H264";
984 id->pf_packetize = rtp_packetize_h264;
987 if( p_fmt->i_extra > 0 )
989 uint8_t *p_buffer = p_fmt->p_extra;
990 int i_buffer = p_fmt->i_extra;
991 char *p_64_sps = NULL;
992 char *p_64_pps = NULL;
995 while( i_buffer > 4 &&
996 p_buffer[0] == 0 && p_buffer[1] == 0 &&
997 p_buffer[2] == 0 && p_buffer[3] == 1 )
999 const int i_nal_type = p_buffer[4]&0x1f;
1003 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1006 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1008 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1010 /* we found another startcode */
1015 if( i_nal_type == 7 )
1017 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1018 sprintf_hexa( hexa, &p_buffer[5], 3 );
1020 else if( i_nal_type == 8 )
1022 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1028 if( p_64_sps && p_64_pps &&
1029 ( asprintf( &id->psz_fmtp,
1030 "packetization-mode=1;profile-level-id=%s;"
1031 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1032 p_64_pps ) == -1 ) )
1033 id->psz_fmtp = NULL;
1038 id->psz_fmtp = strdup( "packetization-mode=1" );
1041 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1043 char hexa[2*p_fmt->i_extra +1];
1045 id->psz_enc = "MP4V-ES";
1046 id->pf_packetize = rtp_packetize_split;
1047 if( p_fmt->i_extra > 0 )
1049 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1050 if( asprintf( &id->psz_fmtp,
1051 "profile-level-id=3; config=%s;", hexa ) == -1 )
1052 id->psz_fmtp = NULL;
1056 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1060 char hexa[2*p_fmt->i_extra +1];
1062 id->psz_enc = "mpeg4-generic";
1063 id->pf_packetize = rtp_packetize_mp4a;
1064 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1065 if( asprintf( &id->psz_fmtp,
1066 "streamtype=5; profile-level-id=15; "
1067 "mode=AAC-hbr; config=%s; SizeLength=13; "
1068 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1070 id->psz_fmtp = NULL;
1076 unsigned char config[6];
1077 unsigned int aacsrates[15] = {
1078 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1079 16000, 12000, 11025, 8000, 7350, 0, 0 };
1081 for( i = 0; i < 15; i++ )
1082 if( p_fmt->audio.i_rate == aacsrates[i] )
1088 config[3]=p_fmt->audio.i_channels<<4;
1092 id->psz_enc = "MP4A-LATM";
1093 id->pf_packetize = rtp_packetize_mp4a_latm;
1094 sprintf_hexa( hexa, config, 6 );
1095 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1096 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1097 id->psz_fmtp = NULL;
1101 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1102 id->psz_enc = "AMR";
1103 id->psz_fmtp = strdup( "octet-align=1" );
1104 id->pf_packetize = rtp_packetize_amr;
1106 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1107 id->psz_enc = "AMR-WB";
1108 id->psz_fmtp = strdup( "octet-align=1" );
1109 id->pf_packetize = rtp_packetize_amr;
1111 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
1112 id->i_payload_type = p_sys->i_payload_type++;
1113 id->psz_enc = "SPEEX";
1114 id->pf_packetize = rtp_packetize_spx;
1116 case VLC_FOURCC( 't', '1', '4', '0' ):
1117 id->psz_enc = "t140" ;
1118 id->i_clock_rate = 1000;
1119 id->pf_packetize = rtp_packetize_t140;
1123 msg_Err( p_stream, "cannot add this stream (unsupported "
1124 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1129 cscov += 8 /* UDP */ + 12 /* RTP */;
1131 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1133 if( id->i_payload_type == p_sys->i_payload_type )
1134 p_sys->i_payload_type++;
1136 if( p_sys->rtsp != NULL )
1137 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1138 GetDWBE( id->ssrc ),
1139 p_sys->psz_destination,
1140 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1142 id->p_fifo = block_FifoNew( p_stream );
1143 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1144 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
1147 /* Update p_sys context */
1148 vlc_mutex_lock( &p_sys->lock_es );
1149 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1150 vlc_mutex_unlock( &p_sys->lock_es );
1152 psz_sdp = SDPGenerate( p_stream, NULL );
1154 vlc_mutex_lock( &p_sys->lock_sdp );
1155 free( p_sys->psz_sdp );
1156 p_sys->psz_sdp = psz_sdp;
1157 vlc_mutex_unlock( &p_sys->lock_sdp );
1159 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1161 /* Update SDP (sap/file) */
1162 if( p_sys->b_export_sap ) SapSetup( p_stream );
1163 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1168 Del( p_stream, id );
1172 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1174 sout_stream_sys_t *p_sys = p_stream->p_sys;
1176 if( id->p_fifo != NULL )
1178 vlc_object_kill( id );
1179 block_FifoWake( id->p_fifo );
1180 vlc_thread_join( id );
1181 block_FifoRelease( id->p_fifo );
1184 vlc_mutex_lock( &p_sys->lock_es );
1185 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1186 vlc_mutex_unlock( &p_sys->lock_es );
1189 if( id->i_port > 0 )
1191 if( id->i_cat == AUDIO_ES && p_sys->i_port_audio == 0 )
1192 p_sys->i_port_audio = id->i_port;
1193 else if( id->i_cat == VIDEO_ES && p_sys->i_port_video == 0 )
1194 p_sys->i_port_video = id->i_port;
1197 free( id->psz_fmtp );
1200 RtspDelId( p_sys->rtsp, id->rtsp_id );
1202 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1203 if( id->listen_fd != NULL )
1204 net_ListenClose( id->listen_fd );
1206 vlc_mutex_destroy( &id->lock_sink );
1208 /* Update SDP (sap/file) */
1209 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1210 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1212 vlc_object_detach( id );
1213 vlc_object_destroy( id );
1217 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1222 assert( p_stream->p_sys->p_mux == NULL );
1224 while( p_buffer != NULL )
1226 p_next = p_buffer->p_next;
1227 if( id->pf_packetize( p_stream, id, p_buffer ) )
1230 block_Release( p_buffer );
1236 /****************************************************************************
1238 ****************************************************************************/
1239 static int SapSetup( sout_stream_t *p_stream )
1241 sout_stream_sys_t *p_sys = p_stream->p_sys;
1242 sout_instance_t *p_sout = p_stream->p_sout;
1244 /* Remove the previous session */
1245 if( p_sys->p_session != NULL)
1247 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1248 p_sys->p_session = NULL;
1251 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1253 announce_method_t *p_method = sout_SAPMethod();
1254 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1256 p_sys->psz_destination,
1258 sout_MethodRelease( p_method );
1264 /****************************************************************************
1266 ****************************************************************************/
1267 static int FileSetup( sout_stream_t *p_stream )
1269 sout_stream_sys_t *p_sys = p_stream->p_sys;
1272 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1274 msg_Err( p_stream, "cannot open file '%s' (%m)",
1275 p_sys->psz_sdp_file );
1276 return VLC_EGENERIC;
1279 fputs( p_sys->psz_sdp, f );
1285 /****************************************************************************
1287 ****************************************************************************/
1288 static int HttpCallback( httpd_file_sys_t *p_args,
1289 httpd_file_t *, uint8_t *p_request,
1290 uint8_t **pp_data, int *pi_data );
1292 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t *url)
1294 sout_stream_sys_t *p_sys = p_stream->p_sys;
1296 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1297 url->i_port > 0 ? url->i_port : 80 );
1298 if( p_sys->p_httpd_host )
1300 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1301 url->psz_path ? url->psz_path : "/",
1304 HttpCallback, (void*)p_sys );
1306 if( p_sys->p_httpd_file == NULL )
1308 return VLC_EGENERIC;
1313 static int HttpCallback( httpd_file_sys_t *p_args,
1314 httpd_file_t *f, uint8_t *p_request,
1315 uint8_t **pp_data, int *pi_data )
1317 VLC_UNUSED(f); VLC_UNUSED(p_request);
1318 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1320 vlc_mutex_lock( &p_sys->lock_sdp );
1321 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1323 *pi_data = strlen( p_sys->psz_sdp );
1324 *pp_data = malloc( *pi_data );
1325 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1332 vlc_mutex_unlock( &p_sys->lock_sdp );
1337 /****************************************************************************
1339 ****************************************************************************/
1340 static void ThreadSend( vlc_object_t *p_this )
1342 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1343 unsigned i_caching = id->i_caching;
1345 int fd[5] = { -1, -1, -1, -1, -1 };
1353 fd[4] = open( "/dev/null", O_WRONLY );
1358 block_t *out = block_FifoGet( id->p_fifo );
1360 continue; /* Forced wakeup */
1362 mtime_t i_date = out->i_dts + i_caching;
1363 ssize_t len = out->i_buffer;
1367 len = write( fd[1], out->p_buffer, len);
1369 continue; /* Uho - should not happen */
1373 vlc_mutex_lock( &id->lock_sink );
1374 unsigned deadc = 0; /* How many dead sockets? */
1375 int deadv[id->sinkc]; /* Dead sockets list */
1377 for( int i = 0; i < id->sinkc; i++ )
1379 SendRTCP( id->sinkv[i].rtcp, out );
1382 tee( fd[0], fd[3], len, 0 );
1383 if( splice( fd[2], NULL, id->sinkv[i].rtp_fd, NULL, len,
1384 SPLICE_F_NONBLOCK ) >= 0 )
1386 if( errno == EAGAIN )
1390 splice( fd[2], NULL, fd[4], NULL, len, 0 );
1392 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1395 /* Retry sending to root out soft-errors */
1396 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1399 deadv[deadc++] = id->sinkv[i].rtp_fd;
1401 vlc_mutex_unlock( &id->lock_sink );
1403 block_Release( out );
1405 splice( fd[0], NULL, fd[4], NULL, len, 0 );
1408 for( unsigned i = 0; i < deadc; i++ )
1410 msg_Dbg( id, "removing socket %d", deadv[i] );
1411 rtp_del_sink( id, deadv[i] );
1414 /* Hopefully we won't overflow the SO_MAXCONN accept queue */
1415 while( id->listen_fd != NULL )
1417 int fd = net_Accept( id, id->listen_fd, 0 );
1420 msg_Dbg( id, "adding socket %d", fd );
1421 rtp_add_sink( id, fd, VLC_TRUE );
1426 for( unsigned i = 0; i < 5; i++ )
1431 int rtp_add_sink( sout_stream_id_t *id, int fd, vlc_bool_t rtcp_mux )
1433 rtp_sink_t sink = { fd, NULL };
1434 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1436 if( sink.rtcp == NULL )
1437 msg_Err( id, "RTCP failed!" );
1439 vlc_mutex_lock( &id->lock_sink );
1440 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1441 vlc_mutex_unlock( &id->lock_sink );
1445 void rtp_del_sink( sout_stream_id_t *id, int fd )
1447 rtp_sink_t sink = { fd, NULL };
1449 /* NOTE: must be safe to use if fd is not included */
1450 vlc_mutex_lock( &id->lock_sink );
1451 for( int i = 0; i < id->sinkc; i++ )
1453 if (id->sinkv[i].rtp_fd == fd)
1455 sink = id->sinkv[i];
1456 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1460 vlc_mutex_unlock( &id->lock_sink );
1462 CloseRTCP( sink.rtcp );
1463 net_Close( sink.rtp_fd );
1466 uint16_t rtp_get_seq( const sout_stream_id_t *id )
1468 /* This will return values for the next packet.
1469 * Accounting for caching would not be totally trivial. */
1470 return id->i_sequence;
1473 /* FIXME: this is pretty bad - if we remove and then insert an ES
1474 * the number will get unsynched from inside RTSP */
1475 unsigned rtp_get_num( const sout_stream_id_t *id )
1477 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1480 vlc_mutex_lock( &p_sys->lock_es );
1481 for( i = 0; i < p_sys->i_es; i++ )
1483 if( id == p_sys->es[i] )
1486 vlc_mutex_unlock( &p_sys->lock_es );
1492 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1493 int b_marker, int64_t i_pts )
1495 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / I64C(1000000);
1497 out->p_buffer[0] = 0x80;
1498 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1499 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1500 out->p_buffer[3] = ( id->i_sequence )&0xff;
1501 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1502 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1503 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1504 out->p_buffer[7] = ( i_timestamp )&0xff;
1506 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1512 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1514 block_FifoPut( id->p_fifo, out );
1518 * @return configured max RTP payload size (including payload type-specific
1519 * headers, excluding RTP and transport headers)
1521 size_t rtp_mtu (const sout_stream_id_t *id)
1523 return id->i_mtu - 12;
1527 * @return number of audio samples to include for a given packetization time
1528 * (this really only makes sense for audio formats).
1530 size_t rtp_plen (const sout_stream_id_t * id, unsigned ptime_ms)
1532 return id->i_channels * (((id->i_clock_rate - 1) * ptime_ms / 1000) + 1);
1536 /*****************************************************************************
1538 *****************************************************************************/
1540 /** Add an ES to a non-RTP muxed stream */
1541 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1543 sout_input_t *p_input;
1544 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1545 assert( p_mux != NULL );
1547 p_input = sout_MuxAddStream( p_mux, p_fmt );
1548 if( p_input == NULL )
1550 msg_Err( p_stream, "cannot add this stream to the muxer" );
1554 return (sout_stream_id_t *)p_input;
1558 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1561 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1562 assert( p_mux != NULL );
1564 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1569 /** Remove an ES from a non-RTP muxed stream */
1570 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1572 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1573 assert( p_mux != NULL );
1575 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1580 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1581 const block_t *p_buffer )
1583 sout_stream_sys_t *p_sys = p_stream->p_sys;
1584 sout_stream_id_t *id = p_sys->es[0];
1586 int64_t i_dts = p_buffer->i_dts;
1588 uint8_t *p_data = p_buffer->p_buffer;
1589 unsigned int i_data = p_buffer->i_buffer;
1590 unsigned int i_max = id->i_mtu - 12;
1592 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1596 unsigned int i_size;
1598 /* output complete packet */
1599 if( p_sys->packet &&
1600 p_sys->packet->i_buffer + i_data > i_max )
1602 rtp_packetize_send( id, p_sys->packet );
1603 p_sys->packet = NULL;
1606 if( p_sys->packet == NULL )
1608 /* allocate a new packet */
1609 p_sys->packet = block_New( p_stream, id->i_mtu );
1610 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1611 p_sys->packet->i_dts = i_dts;
1612 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1613 i_dts += p_sys->packet->i_length;
1616 i_size = __MIN( i_data,
1617 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1619 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1622 p_sys->packet->i_buffer += i_size;
1631 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
1634 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1640 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1642 p_next = p_buffer->p_next;
1643 block_Release( p_buffer );
1651 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1653 sout_access_out_t *p_grab;
1655 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1656 if( p_grab == NULL )
1659 p_grab->p_module = NULL;
1660 p_grab->p_sout = p_stream->p_sout;
1661 p_grab->psz_access = strdup( "grab" );
1662 p_grab->p_cfg = NULL;
1663 p_grab->psz_path = strdup( "" );
1664 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1665 p_grab->pf_seek = NULL;
1666 p_grab->pf_write = AccessOutGrabberWrite;