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 DEST_TEXT N_("Destination")
68 #define DEST_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 PROTO_TEXT N_("Transport protocol")
125 #define PROTO_LONGTEXT N_( \
126 "This selects which transport protocol to use for RTP." )
128 static const char *const ppsz_protos[] = {
129 "dccp", "sctp", "tcp", "udp", "udplite",
132 static const char *const ppsz_protocols[] = {
133 "DCCP", "SCTP", "TCP", "UDP", "UDP-Lite",
136 #define RFC3016_TEXT N_("MP4A LATM")
137 #define RFC3016_LONGTEXT N_( \
138 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
140 static int Open ( vlc_object_t * );
141 static void Close( vlc_object_t * );
143 #define SOUT_CFG_PREFIX "sout-rtp-"
144 #define MAX_EMPTY_BLOCKS 200
147 set_shortname( _("RTP"));
148 set_description( _("RTP stream output") );
149 set_capability( "sout stream", 0 );
150 add_shortcut( "rtp" );
151 set_category( CAT_SOUT );
152 set_subcategory( SUBCAT_SOUT_STREAM );
154 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
155 DEST_LONGTEXT, VLC_TRUE );
157 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
158 SDP_LONGTEXT, VLC_TRUE );
159 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
160 MUX_LONGTEXT, VLC_TRUE );
162 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
163 NAME_LONGTEXT, VLC_TRUE );
164 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
165 DESC_LONGTEXT, VLC_TRUE );
166 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
167 URL_LONGTEXT, VLC_TRUE );
168 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
169 EMAIL_LONGTEXT, VLC_TRUE );
170 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
171 PHONE_LONGTEXT, VLC_TRUE );
173 add_string( SOUT_CFG_PREFIX "proto", "udp", NULL, PROTO_TEXT,
174 PROTO_LONGTEXT, VLC_FALSE );
175 change_string_list( ppsz_protos, ppsz_protocols, NULL );
176 add_integer( SOUT_CFG_PREFIX "port", 50004, NULL, PORT_TEXT,
177 PORT_LONGTEXT, VLC_TRUE );
178 add_integer( SOUT_CFG_PREFIX "port-audio", 50000, NULL, PORT_AUDIO_TEXT,
179 PORT_AUDIO_LONGTEXT, VLC_TRUE );
180 add_integer( SOUT_CFG_PREFIX "port-video", 50002, NULL, PORT_VIDEO_TEXT,
181 PORT_VIDEO_LONGTEXT, VLC_TRUE );
183 add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
184 TTL_LONGTEXT, VLC_TRUE );
185 add_bool( SOUT_CFG_PREFIX "rtcp-mux", VLC_FALSE, NULL,
186 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, VLC_FALSE );
188 add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
189 RFC3016_LONGTEXT, VLC_FALSE );
191 set_callbacks( Open, Close );
194 /*****************************************************************************
195 * Exported prototypes
196 *****************************************************************************/
197 static const char *ppsz_sout_options[] = {
198 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
199 "description", "url", "email", "phone",
204 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
205 static int Del ( sout_stream_t *, sout_stream_id_t * );
206 static int Send( sout_stream_t *, sout_stream_id_t *,
208 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
209 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
210 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
213 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
214 static void ThreadSend( vlc_object_t *p_this );
216 static void SDPHandleUrl( sout_stream_t *, char * );
218 static int SapSetup( sout_stream_t *p_stream );
219 static int FileSetup( sout_stream_t *p_stream );
220 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t * );
222 struct sout_stream_sys_t
226 vlc_mutex_t lock_sdp;
229 vlc_bool_t b_export_sdp_file;
233 vlc_bool_t b_export_sap;
234 session_descriptor_t *p_session;
237 httpd_host_t *p_httpd_host;
238 httpd_file_t *p_httpd_file;
244 char *psz_destination;
248 uint16_t i_port_audio;
249 uint16_t i_port_video;
253 /* when need to use a private one or when using muxer */
256 /* in case we do TS/PS over rtp */
258 sout_access_out_t *p_grab;
264 sout_stream_id_t **es;
267 typedef int (*pf_rtp_packetizer_t)( sout_stream_t *, sout_stream_id_t *,
270 typedef struct rtp_sink_t
276 struct sout_stream_id_t
280 sout_stream_t *p_stream;
283 uint8_t i_payload_type;
295 /* Packetizer specific fields */
296 pf_rtp_packetizer_t pf_packetize;
300 vlc_mutex_t lock_sink;
303 rtsp_stream_id_t *rtsp_id;
306 block_fifo_t *p_fifo;
310 /*****************************************************************************
312 *****************************************************************************/
313 static int Open( vlc_object_t *p_this )
315 sout_stream_t *p_stream = (sout_stream_t*)p_this;
316 sout_instance_t *p_sout = p_stream->p_sout;
317 sout_stream_sys_t *p_sys = NULL;
318 config_chain_t *p_cfg = NULL;
320 vlc_bool_t b_rtsp = VLC_FALSE;
322 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
323 ppsz_sout_options, p_stream->p_cfg );
325 p_sys = malloc( sizeof( sout_stream_sys_t ) );
329 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
331 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
332 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
333 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
334 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
336 p_sys->psz_sdp_file = NULL;
338 if( p_sys->i_port_audio == p_sys->i_port_video )
340 msg_Err( p_stream, "audio and video port cannot be the same" );
341 p_sys->i_port_audio = 0;
342 p_sys->i_port_video = 0;
345 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
347 if( !strcmp( p_cfg->psz_name, "sdp" )
348 && ( p_cfg->psz_value != NULL )
349 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
357 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
360 if( !strncasecmp( psz, "rtsp:", 5 ) )
366 /* Transport protocol */
367 p_sys->proto = IPPROTO_UDP;
368 psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
370 if ((psz == NULL) || !strcasecmp (psz, "udp"))
371 (void)0; /* default */
373 if (!strcasecmp (psz, "dccp"))
375 p_sys->proto = IPPROTO_DCCP;
376 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
380 if (!strcasecmp (psz, "sctp"))
382 p_sys->proto = IPPROTO_TCP;
383 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
388 if (!strcasecmp (psz, "tcp"))
390 p_sys->proto = IPPROTO_TCP;
391 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
395 if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
396 p_sys->proto = IPPROTO_UDPLITE;
398 msg_Warn (p_this, "unknown or unsupported transport protocol \"%s\"",
401 var_Create (p_this, "dccp-service", VLC_VAR_STRING);
403 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
405 msg_Err( p_stream, "missing destination and not in RTSP mode" );
410 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
411 if( p_sys->i_ttl == 0 )
413 /* Normally, we should let the default hop limit up to the core,
414 * but we have to know it to build our SDP properly, which is why
415 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
417 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
420 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
422 p_sys->i_payload_type = 96;
426 p_sys->psz_sdp = NULL;
428 p_sys->b_export_sap = VLC_FALSE;
429 p_sys->b_export_sdp_file = VLC_FALSE;
430 p_sys->p_session = NULL;
432 p_sys->p_httpd_host = NULL;
433 p_sys->p_httpd_file = NULL;
435 p_stream->p_sys = p_sys;
437 vlc_mutex_init( p_stream, &p_sys->lock_sdp );
438 vlc_mutex_init( p_stream, &p_sys->lock_es );
440 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
443 sout_stream_id_t *id;
445 /* Check muxer type */
446 if( strncasecmp( psz, "ps", 2 )
447 && strncasecmp( psz, "mpeg1", 5 )
448 && strncasecmp( psz, "ts", 2 ) )
450 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
452 vlc_mutex_destroy( &p_sys->lock_sdp );
453 vlc_mutex_destroy( &p_sys->lock_es );
458 p_sys->p_grab = GrabberCreate( p_stream );
459 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
462 if( p_sys->p_mux == NULL )
464 msg_Err( p_stream, "cannot create muxer" );
465 sout_AccessOutDelete( p_sys->p_grab );
466 vlc_mutex_destroy( &p_sys->lock_sdp );
467 vlc_mutex_destroy( &p_sys->lock_es );
472 id = Add( p_stream, NULL );
475 sout_MuxDelete( p_sys->p_mux );
476 sout_AccessOutDelete( p_sys->p_grab );
477 vlc_mutex_destroy( &p_sys->lock_sdp );
478 vlc_mutex_destroy( &p_sys->lock_es );
483 p_sys->packet = NULL;
485 p_stream->pf_add = MuxAdd;
486 p_stream->pf_del = MuxDel;
487 p_stream->pf_send = MuxSend;
492 p_sys->p_grab = NULL;
494 p_stream->pf_add = Add;
495 p_stream->pf_del = Del;
496 p_stream->pf_send = Send;
499 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
502 config_chain_t *p_cfg;
504 SDPHandleUrl( p_stream, psz );
506 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
508 if( !strcmp( p_cfg->psz_name, "sdp" ) )
510 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
513 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
514 if( !strcmp( p_cfg->psz_value, psz ) )
517 SDPHandleUrl( p_stream, p_cfg->psz_value );
523 /* update p_sout->i_out_pace_nocontrol */
524 p_stream->p_sout->i_out_pace_nocontrol++;
529 /*****************************************************************************
531 *****************************************************************************/
532 static void Close( vlc_object_t * p_this )
534 sout_stream_t *p_stream = (sout_stream_t*)p_this;
535 sout_stream_sys_t *p_sys = p_stream->p_sys;
537 /* update p_sout->i_out_pace_nocontrol */
538 p_stream->p_sout->i_out_pace_nocontrol--;
542 assert( p_sys->i_es == 1 );
543 Del( p_stream, p_sys->es[0] );
545 sout_MuxDelete( p_sys->p_mux );
546 sout_AccessOutDelete( p_sys->p_grab );
549 block_Release( p_sys->packet );
551 if( p_sys->b_export_sap )
554 SapSetup( p_stream );
558 if( p_sys->rtsp != NULL )
559 RtspUnsetup( p_sys->rtsp );
561 vlc_mutex_destroy( &p_sys->lock_sdp );
562 vlc_mutex_destroy( &p_sys->lock_es );
564 if( p_sys->p_httpd_file )
565 httpd_FileDelete( p_sys->p_httpd_file );
567 if( p_sys->p_httpd_host )
568 httpd_HostDelete( p_sys->p_httpd_host );
570 free( p_sys->psz_sdp );
572 if( p_sys->b_export_sdp_file )
575 unlink( p_sys->psz_sdp_file );
577 free( p_sys->psz_sdp_file );
579 free( p_sys->psz_destination );
583 /*****************************************************************************
585 *****************************************************************************/
586 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
588 sout_stream_sys_t *p_sys = p_stream->p_sys;
591 vlc_UrlParse( &url, psz_url, 0 );
592 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
594 if( p_sys->p_httpd_file )
596 msg_Err( p_stream, "you can use sdp=http:// only once" );
600 if( HttpSetup( p_stream, &url ) )
602 msg_Err( p_stream, "cannot export SDP as HTTP" );
605 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
607 if( p_sys->rtsp != NULL )
609 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
613 /* FIXME test if destination is multicast or no destination at all */
614 p_sys->rtsp = RtspSetup( p_stream, &url );
615 if( p_sys->rtsp == NULL )
617 msg_Err( p_stream, "cannot export SDP as RTSP" );
620 if( p_sys->p_mux != NULL )
622 sout_stream_id_t *id = p_sys->es[0];
623 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0, GetDWBE( id->ssrc ),
624 p_sys->psz_destination, p_sys->i_ttl,
625 id->i_port, id->i_port + 1 );
628 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
629 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
631 p_sys->b_export_sap = VLC_TRUE;
632 SapSetup( p_stream );
634 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
636 if( p_sys->b_export_sdp_file )
638 msg_Err( p_stream, "you can use sdp=file:// only once" );
641 p_sys->b_export_sdp_file = VLC_TRUE;
642 psz_url = &psz_url[5];
643 if( psz_url[0] == '/' && psz_url[1] == '/' )
645 p_sys->psz_sdp_file = strdup( psz_url );
649 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
654 vlc_UrlClean( &url );
657 /*****************************************************************************
659 *****************************************************************************/
661 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
663 const sout_stream_sys_t *p_sys = p_stream->p_sys;
665 struct sockaddr_storage dst;
669 * When we have a fixed destination (typically when we do multicast),
670 * we need to put the actual port numbers in the SDP.
671 * When there is no fixed destination, we only support RTSP unicast
672 * on-demand setup, so we should rather let the clients decide which ports
674 * When there is both a fixed destination and RTSP unicast, we need to
675 * put port numbers used by the fixed destination, otherwise the SDP would
676 * become totally incorrect for multicast use. It should be noted that
677 * port numbers from SDP with RTSP are only "recommendation" from the
678 * server to the clients (per RFC2326), so only broken clients will fail
679 * to handle this properly. There is no solution but to use two differents
680 * output chain with two different RTSP URLs if you need to handle this
685 if( p_sys->psz_destination != NULL )
689 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
690 dstlen = sizeof( dst );
691 if( p_sys->es[0]->listen_fd != NULL )
692 getsockname( p_sys->es[0]->listen_fd[0],
693 (struct sockaddr *)&dst, &dstlen );
695 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
696 (struct sockaddr *)&dst, &dstlen );
702 /* Dummy destination address for RTSP */
703 memset (&dst, 0, sizeof( struct sockaddr_in ) );
704 dst.ss_family = AF_INET;
708 dstlen = sizeof( struct sockaddr_in );
711 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
712 NULL, 0, (struct sockaddr *)&dst, dstlen );
713 if( psz_sdp == NULL )
716 /* TODO: a=source-filter */
717 if( p_sys->rtcp_mux )
718 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
720 if( rtsp_url != NULL )
721 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
723 /* FIXME: locking?! */
724 for( i = 0; i < p_sys->i_es; i++ )
726 sout_stream_id_t *id = p_sys->es[i];
727 const char *mime_major; /* major MIME type */
728 const char *proto = "RTP/AVP"; /* protocol */
733 mime_major = "video";
736 mime_major = "audio";
745 if( rtsp_url == NULL )
747 switch( p_sys->proto )
752 proto = "TCP/RTP/AVP";
755 proto = "DCCP/RTP/AVP";
757 case IPPROTO_UDPLITE:
762 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
763 id->i_payload_type, VLC_FALSE, id->i_bitrate,
764 id->psz_enc, id->i_clock_rate, id->i_channels,
767 if( rtsp_url != NULL )
769 assert( strlen( rtsp_url ) > 0 );
770 vlc_bool_t addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
771 sdp_AddAttribute ( &psz_sdp, "control",
772 addslash ? "%s/trackID=%u" : "%strackID=%u",
777 if( id->listen_fd != NULL )
778 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
779 if( p_sys->proto == IPPROTO_DCCP )
780 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
781 "SC:RTP%c", toupper( mime_major[0] ) );
788 /*****************************************************************************
790 *****************************************************************************/
792 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
794 static const char hex[16] = "0123456789abcdef";
797 for( i = 0; i < i_data; i++ )
799 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
800 s[2*i+1] = hex[(p_data[i] )&0xf];
806 /** Add an ES as a new RTP stream */
807 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
809 /* NOTE: As a special case, if we use a non-RTP
810 * mux (TS/PS), then p_fmt is NULL. */
811 sout_stream_sys_t *p_sys = p_stream->p_sys;
812 sout_stream_id_t *id;
813 int i_port, cscov = -1;
816 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
819 vlc_object_attach( id, p_stream );
821 /* Choose the port */
826 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
828 i_port = p_sys->i_port_audio;
829 p_sys->i_port_audio = 0;
832 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
834 i_port = p_sys->i_port_video;
835 p_sys->i_port_video = 0;
840 if( p_sys->i_port != p_sys->i_port_audio
841 && p_sys->i_port != p_sys->i_port_video )
843 i_port = p_sys->i_port;
850 id->p_stream = p_stream;
852 id->i_sequence = rand()&0xffff;
853 id->i_payload_type = p_sys->i_payload_type;
854 id->ssrc[0] = rand()&0xff;
855 id->ssrc[1] = rand()&0xff;
856 id->ssrc[2] = rand()&0xff;
857 id->ssrc[3] = rand()&0xff;
861 id->i_clock_rate = 90000; /* most common case for video */
866 id->i_cat = p_fmt->i_cat;
867 if( p_fmt->i_cat == AUDIO_ES )
869 id->i_clock_rate = p_fmt->audio.i_rate;
870 id->i_channels = p_fmt->audio.i_channels;
872 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
876 id->i_cat = VIDEO_ES;
880 id->pf_packetize = NULL;
881 id->i_mtu = config_GetInt( p_stream, "mtu" );
882 if( id->i_mtu <= 12 + 16 )
883 id->i_mtu = 576 - 20 - 8; /* pessimistic */
885 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
887 vlc_mutex_init( p_stream, &id->lock_sink );
892 id->listen_fd = NULL;
895 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
897 if( p_sys->psz_destination != NULL )
898 switch( p_sys->proto )
905 case VIDEO_ES: code = "RTPV"; break;
906 case AUDIO_ES: code = "RTPARTPV"; break;
907 case SPU_ES: code = "RTPTRPTV"; break;
908 default: code = "RTPORTPV"; break;
910 var_SetString (p_stream, "dccp-service", code);
913 id->listen_fd = net_Listen( VLC_OBJECT(p_stream),
914 p_sys->psz_destination, i_port,
916 if( id->listen_fd == NULL )
918 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
925 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
926 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
927 i_port, ttl, p_sys->proto );
930 msg_Err( p_stream, "cannot create RTP socket" );
933 rtp_add_sink( id, fd, p_sys->rtcp_mux );
939 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
941 if( psz == NULL ) /* Uho! */
944 if( strncmp( psz, "ts", 2 ) == 0 )
946 id->i_payload_type = 33;
947 id->psz_enc = "MP2T";
951 id->psz_enc = "MP2P";
955 switch( p_fmt->i_codec )
957 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
958 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
959 id->i_payload_type = 0;
960 id->psz_enc = "PCMU";
961 id->pf_packetize = rtp_packetize_l8;
963 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
964 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
965 id->i_payload_type = 8;
966 id->psz_enc = "PCMA";
967 id->pf_packetize = rtp_packetize_l8;
969 case VLC_FOURCC( 's', '1', '6', 'b' ):
970 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
972 id->i_payload_type = 11;
974 else if( p_fmt->audio.i_channels == 2 &&
975 p_fmt->audio.i_rate == 44100 )
977 id->i_payload_type = 10;
980 id->pf_packetize = rtp_packetize_l16;
982 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
984 id->pf_packetize = rtp_packetize_l8;
986 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
987 case VLC_FOURCC( 'm', 'p', '3', ' ' ):
988 id->i_payload_type = 14;
990 id->pf_packetize = rtp_packetize_mpa;
992 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
993 id->i_payload_type = 32;
995 id->pf_packetize = rtp_packetize_mpv;
997 case VLC_FOURCC( 'a', '5', '2', ' ' ):
999 id->pf_packetize = rtp_packetize_ac3;
1001 case VLC_FOURCC( 'H', '2', '6', '3' ):
1002 id->psz_enc = "H263-1998";
1003 id->pf_packetize = rtp_packetize_h263;
1005 case VLC_FOURCC( 'h', '2', '6', '4' ):
1006 id->psz_enc = "H264";
1007 id->pf_packetize = rtp_packetize_h264;
1008 id->psz_fmtp = NULL;
1010 if( p_fmt->i_extra > 0 )
1012 uint8_t *p_buffer = p_fmt->p_extra;
1013 int i_buffer = p_fmt->i_extra;
1014 char *p_64_sps = NULL;
1015 char *p_64_pps = NULL;
1018 while( i_buffer > 4 &&
1019 p_buffer[0] == 0 && p_buffer[1] == 0 &&
1020 p_buffer[2] == 0 && p_buffer[3] == 1 )
1022 const int i_nal_type = p_buffer[4]&0x1f;
1026 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1029 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1031 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1033 /* we found another startcode */
1038 if( i_nal_type == 7 )
1040 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1041 sprintf_hexa( hexa, &p_buffer[5], 3 );
1043 else if( i_nal_type == 8 )
1045 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1051 if( p_64_sps && p_64_pps &&
1052 ( asprintf( &id->psz_fmtp,
1053 "packetization-mode=1;profile-level-id=%s;"
1054 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1055 p_64_pps ) == -1 ) )
1056 id->psz_fmtp = NULL;
1061 id->psz_fmtp = strdup( "packetization-mode=1" );
1064 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1066 char hexa[2*p_fmt->i_extra +1];
1068 id->psz_enc = "MP4V-ES";
1069 id->pf_packetize = rtp_packetize_split;
1070 if( p_fmt->i_extra > 0 )
1072 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1073 if( asprintf( &id->psz_fmtp,
1074 "profile-level-id=3; config=%s;", hexa ) == -1 )
1075 id->psz_fmtp = NULL;
1079 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1083 char hexa[2*p_fmt->i_extra +1];
1085 id->psz_enc = "mpeg4-generic";
1086 id->pf_packetize = rtp_packetize_mp4a;
1087 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1088 if( asprintf( &id->psz_fmtp,
1089 "streamtype=5; profile-level-id=15; "
1090 "mode=AAC-hbr; config=%s; SizeLength=13; "
1091 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1093 id->psz_fmtp = NULL;
1099 unsigned char config[6];
1100 unsigned int aacsrates[15] = {
1101 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1102 16000, 12000, 11025, 8000, 7350, 0, 0 };
1104 for( i = 0; i < 15; i++ )
1105 if( p_fmt->audio.i_rate == aacsrates[i] )
1111 config[3]=p_fmt->audio.i_channels<<4;
1115 id->psz_enc = "MP4A-LATM";
1116 id->pf_packetize = rtp_packetize_mp4a_latm;
1117 sprintf_hexa( hexa, config, 6 );
1118 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1119 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1120 id->psz_fmtp = NULL;
1124 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1125 id->psz_enc = "AMR";
1126 id->psz_fmtp = strdup( "octet-align=1" );
1127 id->pf_packetize = rtp_packetize_amr;
1129 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1130 id->psz_enc = "AMR-WB";
1131 id->psz_fmtp = strdup( "octet-align=1" );
1132 id->pf_packetize = rtp_packetize_amr;
1134 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
1135 id->i_payload_type = p_sys->i_payload_type++;
1136 id->psz_enc = "SPEEX";
1137 id->pf_packetize = rtp_packetize_spx;
1139 case VLC_FOURCC( 't', '1', '4', '0' ):
1140 id->psz_enc = "t140" ;
1141 id->i_clock_rate = 1000;
1142 id->pf_packetize = rtp_packetize_t140;
1146 msg_Err( p_stream, "cannot add this stream (unsupported "
1147 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1152 cscov += 8 /* UDP */ + 12 /* RTP */;
1154 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1156 if( id->i_payload_type == p_sys->i_payload_type )
1157 p_sys->i_payload_type++;
1159 if( p_sys->rtsp != NULL )
1160 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1161 GetDWBE( id->ssrc ),
1162 p_sys->psz_destination,
1163 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1165 id->p_fifo = block_FifoNew( p_stream );
1166 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1167 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
1170 /* Update p_sys context */
1171 vlc_mutex_lock( &p_sys->lock_es );
1172 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1173 vlc_mutex_unlock( &p_sys->lock_es );
1175 psz_sdp = SDPGenerate( p_stream, NULL );
1177 vlc_mutex_lock( &p_sys->lock_sdp );
1178 free( p_sys->psz_sdp );
1179 p_sys->psz_sdp = psz_sdp;
1180 vlc_mutex_unlock( &p_sys->lock_sdp );
1182 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1184 /* Update SDP (sap/file) */
1185 if( p_sys->b_export_sap ) SapSetup( p_stream );
1186 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1191 Del( p_stream, id );
1195 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1197 sout_stream_sys_t *p_sys = p_stream->p_sys;
1199 if( id->p_fifo != NULL )
1201 vlc_object_kill( id );
1202 block_FifoWake( id->p_fifo );
1203 vlc_thread_join( id );
1204 block_FifoRelease( id->p_fifo );
1207 vlc_mutex_lock( &p_sys->lock_es );
1208 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1209 vlc_mutex_unlock( &p_sys->lock_es );
1212 if( id->i_port == var_GetInteger( p_stream, "port-audio" ) )
1213 p_sys->i_port_audio = id->i_port;
1214 if( id->i_port == var_GetInteger( p_stream, "port-video" ) )
1215 p_sys->i_port_video = id->i_port;
1217 free( id->psz_fmtp );
1220 RtspDelId( p_sys->rtsp, id->rtsp_id );
1222 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1223 if( id->listen_fd != NULL )
1224 net_ListenClose( id->listen_fd );
1226 vlc_mutex_destroy( &id->lock_sink );
1228 /* Update SDP (sap/file) */
1229 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1230 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1232 vlc_object_detach( id );
1233 vlc_object_release( id );
1237 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1242 assert( p_stream->p_sys->p_mux == NULL );
1244 while( p_buffer != NULL )
1246 p_next = p_buffer->p_next;
1247 if( id->pf_packetize( p_stream, id, p_buffer ) )
1250 block_Release( p_buffer );
1256 /****************************************************************************
1258 ****************************************************************************/
1259 static int SapSetup( sout_stream_t *p_stream )
1261 sout_stream_sys_t *p_sys = p_stream->p_sys;
1262 sout_instance_t *p_sout = p_stream->p_sout;
1264 /* Remove the previous session */
1265 if( p_sys->p_session != NULL)
1267 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1268 p_sys->p_session = NULL;
1271 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1273 announce_method_t *p_method = sout_SAPMethod();
1274 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1276 p_sys->psz_destination,
1278 sout_MethodRelease( p_method );
1284 /****************************************************************************
1286 ****************************************************************************/
1287 static int FileSetup( sout_stream_t *p_stream )
1289 sout_stream_sys_t *p_sys = p_stream->p_sys;
1292 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1294 msg_Err( p_stream, "cannot open file '%s' (%m)",
1295 p_sys->psz_sdp_file );
1296 return VLC_EGENERIC;
1299 fputs( p_sys->psz_sdp, f );
1305 /****************************************************************************
1307 ****************************************************************************/
1308 static int HttpCallback( httpd_file_sys_t *p_args,
1309 httpd_file_t *, uint8_t *p_request,
1310 uint8_t **pp_data, int *pi_data );
1312 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t *url)
1314 sout_stream_sys_t *p_sys = p_stream->p_sys;
1316 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1317 url->i_port > 0 ? url->i_port : 80 );
1318 if( p_sys->p_httpd_host )
1320 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1321 url->psz_path ? url->psz_path : "/",
1324 HttpCallback, (void*)p_sys );
1326 if( p_sys->p_httpd_file == NULL )
1328 return VLC_EGENERIC;
1333 static int HttpCallback( httpd_file_sys_t *p_args,
1334 httpd_file_t *f, uint8_t *p_request,
1335 uint8_t **pp_data, int *pi_data )
1337 VLC_UNUSED(f); VLC_UNUSED(p_request);
1338 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1340 vlc_mutex_lock( &p_sys->lock_sdp );
1341 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1343 *pi_data = strlen( p_sys->psz_sdp );
1344 *pp_data = malloc( *pi_data );
1345 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1352 vlc_mutex_unlock( &p_sys->lock_sdp );
1357 /****************************************************************************
1359 ****************************************************************************/
1360 static void ThreadSend( vlc_object_t *p_this )
1362 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1363 unsigned i_caching = id->i_caching;
1365 int fd[5] = { -1, -1, -1, -1, -1 };
1373 fd[4] = open( "/dev/null", O_WRONLY );
1378 block_t *out = block_FifoGet( id->p_fifo );
1380 continue; /* Forced wakeup */
1382 mtime_t i_date = out->i_dts + i_caching;
1383 ssize_t len = out->i_buffer;
1387 len = write( fd[1], out->p_buffer, len);
1389 continue; /* Uho - should not happen */
1393 vlc_mutex_lock( &id->lock_sink );
1394 unsigned deadc = 0; /* How many dead sockets? */
1395 int deadv[id->sinkc]; /* Dead sockets list */
1397 for( int i = 0; i < id->sinkc; i++ )
1399 SendRTCP( id->sinkv[i].rtcp, out );
1402 tee( fd[0], fd[3], len, 0 );
1403 if( splice( fd[2], NULL, id->sinkv[i].rtp_fd, NULL, len,
1404 SPLICE_F_NONBLOCK ) >= 0 )
1406 if( errno == EAGAIN )
1410 splice( fd[2], NULL, fd[4], NULL, len, 0 );
1412 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1415 /* Retry sending to root out soft-errors */
1416 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1419 deadv[deadc++] = id->sinkv[i].rtp_fd;
1421 vlc_mutex_unlock( &id->lock_sink );
1423 block_Release( out );
1425 splice( fd[0], NULL, fd[4], NULL, len, 0 );
1428 for( unsigned i = 0; i < deadc; i++ )
1430 msg_Dbg( id, "removing socket %d", deadv[i] );
1431 rtp_del_sink( id, deadv[i] );
1434 /* Hopefully we won't overflow the SO_MAXCONN accept queue */
1435 while( id->listen_fd != NULL )
1437 int fd = net_Accept( id, id->listen_fd, 0 );
1440 msg_Dbg( id, "adding socket %d", fd );
1441 rtp_add_sink( id, fd, VLC_TRUE );
1446 for( unsigned i = 0; i < 5; i++ )
1451 int rtp_add_sink( sout_stream_id_t *id, int fd, vlc_bool_t rtcp_mux )
1453 rtp_sink_t sink = { fd, NULL };
1454 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1456 if( sink.rtcp == NULL )
1457 msg_Err( id, "RTCP failed!" );
1459 vlc_mutex_lock( &id->lock_sink );
1460 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1461 vlc_mutex_unlock( &id->lock_sink );
1465 void rtp_del_sink( sout_stream_id_t *id, int fd )
1467 rtp_sink_t sink = { fd, NULL };
1469 /* NOTE: must be safe to use if fd is not included */
1470 vlc_mutex_lock( &id->lock_sink );
1471 for( int i = 0; i < id->sinkc; i++ )
1473 if (id->sinkv[i].rtp_fd == fd)
1475 sink = id->sinkv[i];
1476 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1480 vlc_mutex_unlock( &id->lock_sink );
1482 CloseRTCP( sink.rtcp );
1483 net_Close( sink.rtp_fd );
1486 uint16_t rtp_get_seq( const sout_stream_id_t *id )
1488 /* This will return values for the next packet.
1489 * Accounting for caching would not be totally trivial. */
1490 return id->i_sequence;
1493 /* FIXME: this is pretty bad - if we remove and then insert an ES
1494 * the number will get unsynched from inside RTSP */
1495 unsigned rtp_get_num( const sout_stream_id_t *id )
1497 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1500 vlc_mutex_lock( &p_sys->lock_es );
1501 for( i = 0; i < p_sys->i_es; i++ )
1503 if( id == p_sys->es[i] )
1506 vlc_mutex_unlock( &p_sys->lock_es );
1512 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1513 int b_marker, int64_t i_pts )
1515 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / I64C(1000000);
1517 out->p_buffer[0] = 0x80;
1518 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1519 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1520 out->p_buffer[3] = ( id->i_sequence )&0xff;
1521 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1522 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1523 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1524 out->p_buffer[7] = ( i_timestamp )&0xff;
1526 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1532 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1534 block_FifoPut( id->p_fifo, out );
1538 * @return configured max RTP payload size (including payload type-specific
1539 * headers, excluding RTP and transport headers)
1541 size_t rtp_mtu (const sout_stream_id_t *id)
1543 return id->i_mtu - 12;
1547 * @return number of audio samples to include for a given packetization time
1548 * (this really only makes sense for audio formats).
1550 size_t rtp_plen (const sout_stream_id_t * id, unsigned ptime_ms)
1552 return id->i_channels * (((id->i_clock_rate - 1) * ptime_ms / 1000) + 1);
1556 /*****************************************************************************
1558 *****************************************************************************/
1560 /** Add an ES to a non-RTP muxed stream */
1561 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1563 sout_input_t *p_input;
1564 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1565 assert( p_mux != NULL );
1567 p_input = sout_MuxAddStream( p_mux, p_fmt );
1568 if( p_input == NULL )
1570 msg_Err( p_stream, "cannot add this stream to the muxer" );
1574 return (sout_stream_id_t *)p_input;
1578 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1581 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1582 assert( p_mux != NULL );
1584 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1589 /** Remove an ES from a non-RTP muxed stream */
1590 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1592 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1593 assert( p_mux != NULL );
1595 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1600 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1601 const block_t *p_buffer )
1603 sout_stream_sys_t *p_sys = p_stream->p_sys;
1604 sout_stream_id_t *id = p_sys->es[0];
1606 int64_t i_dts = p_buffer->i_dts;
1608 uint8_t *p_data = p_buffer->p_buffer;
1609 unsigned int i_data = p_buffer->i_buffer;
1610 unsigned int i_max = id->i_mtu - 12;
1612 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1616 unsigned int i_size;
1618 /* output complete packet */
1619 if( p_sys->packet &&
1620 p_sys->packet->i_buffer + i_data > i_max )
1622 rtp_packetize_send( id, p_sys->packet );
1623 p_sys->packet = NULL;
1626 if( p_sys->packet == NULL )
1628 /* allocate a new packet */
1629 p_sys->packet = block_New( p_stream, id->i_mtu );
1630 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1631 p_sys->packet->i_dts = i_dts;
1632 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1633 i_dts += p_sys->packet->i_length;
1636 i_size = __MIN( i_data,
1637 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1639 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1642 p_sys->packet->i_buffer += i_size;
1651 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
1654 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1660 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1662 p_next = p_buffer->p_next;
1663 block_Release( p_buffer );
1671 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1673 sout_access_out_t *p_grab;
1675 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1676 if( p_grab == NULL )
1679 p_grab->p_module = NULL;
1680 p_grab->p_sout = p_stream->p_sout;
1681 p_grab->psz_access = strdup( "grab" );
1682 p_grab->p_cfg = NULL;
1683 p_grab->psz_path = strdup( "" );
1684 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1685 p_grab->pf_seek = NULL;
1686 p_grab->pf_write = AccessOutGrabberWrite;
1687 vlc_object_attach( p_grab, p_stream );