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 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
36 #include <vlc_block.h>
38 #include <vlc_httpd.h>
40 #include <vlc_network.h>
41 #include <vlc_charset.h>
42 #include <vlc_strings.h>
47 # include <sys/types.h>
50 # include <sys/stat.h>
52 #ifdef HAVE_LINUX_DCCP_H
53 # include <linux/dccp.h>
56 # define IPPROTO_DCCP 33
58 #ifndef IPPROTO_UDPLITE
59 # define IPPROTO_UDPLITE 136
66 /*****************************************************************************
68 *****************************************************************************/
70 #define DEST_TEXT N_("Destination")
71 #define DEST_LONGTEXT N_( \
72 "This is the output URL that will be used." )
73 #define SDP_TEXT N_("SDP")
74 #define SDP_LONGTEXT N_( \
75 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
76 "session will be made available. You must use an url: http://location to " \
77 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
78 "for the SDP to be announced via SAP." )
79 #define SAP_TEXT N_("SAP announcing")
80 #define SAP_LONGTEXT N_("Announce this session with SAP.")
81 #define MUX_TEXT N_("Muxer")
82 #define MUX_LONGTEXT N_( \
83 "This allows you to specify the muxer used for the streaming output. " \
84 "Default is to use no muxer (standard RTP stream)." )
86 #define NAME_TEXT N_("Session name")
87 #define NAME_LONGTEXT N_( \
88 "This is the name of the session that will be announced in the SDP " \
89 "(Session Descriptor)." )
90 #define DESC_TEXT N_("Session description")
91 #define DESC_LONGTEXT N_( \
92 "This allows you to give a short description with details about the stream, " \
93 "that will be announced in the SDP (Session Descriptor)." )
94 #define URL_TEXT N_("Session URL")
95 #define URL_LONGTEXT N_( \
96 "This allows you to give an URL with more details about the stream " \
97 "(often the website of the streaming organization), that will " \
98 "be announced in the SDP (Session Descriptor)." )
99 #define EMAIL_TEXT N_("Session email")
100 #define EMAIL_LONGTEXT N_( \
101 "This allows you to give a contact mail address for the stream, that will " \
102 "be announced in the SDP (Session Descriptor)." )
103 #define PHONE_TEXT N_("Session phone number")
104 #define PHONE_LONGTEXT N_( \
105 "This allows you to give a contact telephone number for the stream, that will " \
106 "be announced in the SDP (Session Descriptor)." )
108 #define PORT_TEXT N_("Port")
109 #define PORT_LONGTEXT N_( \
110 "This allows you to specify the base port for the RTP streaming." )
111 #define PORT_AUDIO_TEXT N_("Audio port")
112 #define PORT_AUDIO_LONGTEXT N_( \
113 "This allows you to specify the default audio port for the RTP streaming." )
114 #define PORT_VIDEO_TEXT N_("Video port")
115 #define PORT_VIDEO_LONGTEXT N_( \
116 "This allows you to specify the default video port for the RTP streaming." )
118 #define TTL_TEXT N_("Hop limit (TTL)")
119 #define TTL_LONGTEXT N_( \
120 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
121 "the multicast packets sent by the stream output (0 = use operating " \
122 "system built-in default).")
124 #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
125 #define RTCP_MUX_LONGTEXT N_( \
126 "This sends and receives RTCP packet multiplexed over the same port " \
129 #define PROTO_TEXT N_("Transport protocol")
130 #define PROTO_LONGTEXT N_( \
131 "This selects which transport protocol to use for RTP." )
133 static const char *const ppsz_protos[] = {
134 "dccp", "sctp", "tcp", "udp", "udplite",
137 static const char *const ppsz_protocols[] = {
138 "DCCP", "SCTP", "TCP", "UDP", "UDP-Lite",
141 #define RFC3016_TEXT N_("MP4A LATM")
142 #define RFC3016_LONGTEXT N_( \
143 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
145 static int Open ( vlc_object_t * );
146 static void Close( vlc_object_t * );
148 #define SOUT_CFG_PREFIX "sout-rtp-"
149 #define MAX_EMPTY_BLOCKS 200
152 set_shortname( N_("RTP"));
153 set_description( N_("RTP stream output") );
154 set_capability( "sout stream", 0 );
155 add_shortcut( "rtp" );
156 set_category( CAT_SOUT );
157 set_subcategory( SUBCAT_SOUT_STREAM );
159 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
160 DEST_LONGTEXT, true );
162 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
163 SDP_LONGTEXT, true );
164 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
165 MUX_LONGTEXT, true );
166 add_bool( SOUT_CFG_PREFIX "sap", false, NULL, SAP_TEXT, SAP_LONGTEXT,
169 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
170 NAME_LONGTEXT, true );
171 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
172 DESC_LONGTEXT, true );
173 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
174 URL_LONGTEXT, true );
175 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
176 EMAIL_LONGTEXT, true );
177 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
178 PHONE_LONGTEXT, true );
180 add_string( SOUT_CFG_PREFIX "proto", "udp", NULL, PROTO_TEXT,
181 PROTO_LONGTEXT, false );
182 change_string_list( ppsz_protos, ppsz_protocols, NULL );
183 add_integer( SOUT_CFG_PREFIX "port", 50004, NULL, PORT_TEXT,
184 PORT_LONGTEXT, true );
185 add_integer( SOUT_CFG_PREFIX "port-audio", 50000, NULL, PORT_AUDIO_TEXT,
186 PORT_AUDIO_LONGTEXT, true );
187 add_integer( SOUT_CFG_PREFIX "port-video", 50002, NULL, PORT_VIDEO_TEXT,
188 PORT_VIDEO_LONGTEXT, true );
190 add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
191 TTL_LONGTEXT, true );
192 add_bool( SOUT_CFG_PREFIX "rtcp-mux", false, NULL,
193 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, false );
195 add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
196 RFC3016_LONGTEXT, false );
198 set_callbacks( Open, Close );
201 /*****************************************************************************
202 * Exported prototypes
203 *****************************************************************************/
204 static const char *const ppsz_sout_options[] = {
205 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
206 "sap", "description", "url", "email", "phone",
211 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
212 static int Del ( sout_stream_t *, sout_stream_id_t * );
213 static int Send( sout_stream_t *, sout_stream_id_t *,
215 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
216 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
217 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
220 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
221 static void ThreadSend( vlc_object_t *p_this );
223 static void SDPHandleUrl( sout_stream_t *, char * );
225 static int SapSetup( sout_stream_t *p_stream );
226 static int FileSetup( sout_stream_t *p_stream );
227 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t * );
229 struct sout_stream_sys_t
233 vlc_mutex_t lock_sdp;
236 bool b_export_sdp_file;
241 session_descriptor_t *p_session;
244 httpd_host_t *p_httpd_host;
245 httpd_file_t *p_httpd_file;
251 char *psz_destination;
255 uint16_t i_port_audio;
256 uint16_t i_port_video;
260 /* when need to use a private one or when using muxer */
263 /* in case we do TS/PS over rtp */
265 sout_access_out_t *p_grab;
271 sout_stream_id_t **es;
274 typedef int (*pf_rtp_packetizer_t)( sout_stream_id_t *, block_t * );
276 typedef struct rtp_sink_t
282 struct sout_stream_id_t
286 sout_stream_t *p_stream;
289 uint8_t i_payload_type;
301 /* Packetizer specific fields */
302 pf_rtp_packetizer_t pf_packetize;
306 vlc_mutex_t lock_sink;
309 rtsp_stream_id_t *rtsp_id;
312 block_fifo_t *p_fifo;
316 /*****************************************************************************
318 *****************************************************************************/
319 static int Open( vlc_object_t *p_this )
321 sout_stream_t *p_stream = (sout_stream_t*)p_this;
322 sout_instance_t *p_sout = p_stream->p_sout;
323 sout_stream_sys_t *p_sys = NULL;
324 config_chain_t *p_cfg = NULL;
328 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
329 ppsz_sout_options, p_stream->p_cfg );
331 p_sys = malloc( sizeof( sout_stream_sys_t ) );
335 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
337 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
338 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
339 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
340 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
342 p_sys->psz_sdp_file = NULL;
344 if( p_sys->i_port_audio == p_sys->i_port_video )
346 msg_Err( p_stream, "audio and video port cannot be the same" );
347 p_sys->i_port_audio = 0;
348 p_sys->i_port_video = 0;
351 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
353 if( !strcmp( p_cfg->psz_name, "sdp" )
354 && ( p_cfg->psz_value != NULL )
355 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
363 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
366 if( !strncasecmp( psz, "rtsp:", 5 ) )
372 /* Transport protocol */
373 p_sys->proto = IPPROTO_UDP;
374 psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
376 if ((psz == NULL) || !strcasecmp (psz, "udp"))
377 (void)0; /* default */
379 if (!strcasecmp (psz, "dccp"))
381 p_sys->proto = IPPROTO_DCCP;
382 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
386 if (!strcasecmp (psz, "sctp"))
388 p_sys->proto = IPPROTO_TCP;
389 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
394 if (!strcasecmp (psz, "tcp"))
396 p_sys->proto = IPPROTO_TCP;
397 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
401 if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
402 p_sys->proto = IPPROTO_UDPLITE;
404 msg_Warn (p_this, "unknown or unsupported transport protocol \"%s\"",
407 var_Create (p_this, "dccp-service", VLC_VAR_STRING);
409 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
411 msg_Err( p_stream, "missing destination and not in RTSP mode" );
416 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
417 if( p_sys->i_ttl == 0 )
419 /* Normally, we should let the default hop limit up to the core,
420 * but we have to know it to build our SDP properly, which is why
421 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
423 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
426 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
428 p_sys->i_payload_type = 96;
432 p_sys->psz_sdp = NULL;
434 p_sys->b_export_sap = false;
435 p_sys->b_export_sdp_file = false;
436 p_sys->p_session = NULL;
438 p_sys->p_httpd_host = NULL;
439 p_sys->p_httpd_file = NULL;
441 p_stream->p_sys = p_sys;
443 vlc_mutex_init( &p_sys->lock_sdp );
444 vlc_mutex_init( &p_sys->lock_es );
446 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
449 sout_stream_id_t *id;
451 /* Check muxer type */
452 if( strncasecmp( psz, "ps", 2 )
453 && strncasecmp( psz, "mpeg1", 5 )
454 && strncasecmp( psz, "ts", 2 ) )
456 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
458 vlc_mutex_destroy( &p_sys->lock_sdp );
459 vlc_mutex_destroy( &p_sys->lock_es );
464 p_sys->p_grab = GrabberCreate( p_stream );
465 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
468 if( p_sys->p_mux == NULL )
470 msg_Err( p_stream, "cannot create muxer" );
471 sout_AccessOutDelete( p_sys->p_grab );
472 vlc_mutex_destroy( &p_sys->lock_sdp );
473 vlc_mutex_destroy( &p_sys->lock_es );
478 id = Add( p_stream, NULL );
481 sout_MuxDelete( p_sys->p_mux );
482 sout_AccessOutDelete( p_sys->p_grab );
483 vlc_mutex_destroy( &p_sys->lock_sdp );
484 vlc_mutex_destroy( &p_sys->lock_es );
489 p_sys->packet = NULL;
491 p_stream->pf_add = MuxAdd;
492 p_stream->pf_del = MuxDel;
493 p_stream->pf_send = MuxSend;
498 p_sys->p_grab = NULL;
500 p_stream->pf_add = Add;
501 p_stream->pf_del = Del;
502 p_stream->pf_send = Send;
505 if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
506 SDPHandleUrl( p_stream, "sap" );
508 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
511 config_chain_t *p_cfg;
513 SDPHandleUrl( p_stream, psz );
515 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
517 if( !strcmp( p_cfg->psz_name, "sdp" ) )
519 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
522 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
523 if( !strcmp( p_cfg->psz_value, psz ) )
526 SDPHandleUrl( p_stream, p_cfg->psz_value );
532 /* update p_sout->i_out_pace_nocontrol */
533 p_stream->p_sout->i_out_pace_nocontrol++;
538 /*****************************************************************************
540 *****************************************************************************/
541 static void Close( vlc_object_t * p_this )
543 sout_stream_t *p_stream = (sout_stream_t*)p_this;
544 sout_stream_sys_t *p_sys = p_stream->p_sys;
546 /* update p_sout->i_out_pace_nocontrol */
547 p_stream->p_sout->i_out_pace_nocontrol--;
551 assert( p_sys->i_es == 1 );
552 Del( p_stream, p_sys->es[0] );
554 sout_MuxDelete( p_sys->p_mux );
555 sout_AccessOutDelete( p_sys->p_grab );
558 block_Release( p_sys->packet );
560 if( p_sys->b_export_sap )
563 SapSetup( p_stream );
567 if( p_sys->rtsp != NULL )
568 RtspUnsetup( p_sys->rtsp );
570 vlc_mutex_destroy( &p_sys->lock_sdp );
571 vlc_mutex_destroy( &p_sys->lock_es );
573 if( p_sys->p_httpd_file )
574 httpd_FileDelete( p_sys->p_httpd_file );
576 if( p_sys->p_httpd_host )
577 httpd_HostDelete( p_sys->p_httpd_host );
579 free( p_sys->psz_sdp );
581 if( p_sys->b_export_sdp_file )
584 unlink( p_sys->psz_sdp_file );
586 free( p_sys->psz_sdp_file );
588 free( p_sys->psz_destination );
592 /*****************************************************************************
594 *****************************************************************************/
595 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
597 sout_stream_sys_t *p_sys = p_stream->p_sys;
600 vlc_UrlParse( &url, psz_url, 0 );
601 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
603 if( p_sys->p_httpd_file )
605 msg_Err( p_stream, "you can use sdp=http:// only once" );
609 if( HttpSetup( p_stream, &url ) )
611 msg_Err( p_stream, "cannot export SDP as HTTP" );
614 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
616 if( p_sys->rtsp != NULL )
618 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
622 /* FIXME test if destination is multicast or no destination at all */
623 p_sys->rtsp = RtspSetup( p_stream, &url );
624 if( p_sys->rtsp == NULL )
626 msg_Err( p_stream, "cannot export SDP as RTSP" );
629 if( p_sys->p_mux != NULL )
631 sout_stream_id_t *id = p_sys->es[0];
632 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0, GetDWBE( id->ssrc ),
633 p_sys->psz_destination, p_sys->i_ttl,
634 id->i_port, id->i_port + 1 );
637 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
638 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
640 p_sys->b_export_sap = true;
641 SapSetup( p_stream );
643 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
645 if( p_sys->b_export_sdp_file )
647 msg_Err( p_stream, "you can use sdp=file:// only once" );
650 p_sys->b_export_sdp_file = true;
651 psz_url = &psz_url[5];
652 if( psz_url[0] == '/' && psz_url[1] == '/' )
654 p_sys->psz_sdp_file = strdup( psz_url );
658 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
663 vlc_UrlClean( &url );
666 /*****************************************************************************
668 *****************************************************************************/
670 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
672 const sout_stream_sys_t *p_sys = p_stream->p_sys;
674 struct sockaddr_storage dst;
678 * When we have a fixed destination (typically when we do multicast),
679 * we need to put the actual port numbers in the SDP.
680 * When there is no fixed destination, we only support RTSP unicast
681 * on-demand setup, so we should rather let the clients decide which ports
683 * When there is both a fixed destination and RTSP unicast, we need to
684 * put port numbers used by the fixed destination, otherwise the SDP would
685 * become totally incorrect for multicast use. It should be noted that
686 * port numbers from SDP with RTSP are only "recommendation" from the
687 * server to the clients (per RFC2326), so only broken clients will fail
688 * to handle this properly. There is no solution but to use two differents
689 * output chain with two different RTSP URLs if you need to handle this
694 if( p_sys->psz_destination != NULL )
698 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
699 dstlen = sizeof( dst );
700 if( p_sys->es[0]->listen_fd != NULL )
701 getsockname( p_sys->es[0]->listen_fd[0],
702 (struct sockaddr *)&dst, &dstlen );
704 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
705 (struct sockaddr *)&dst, &dstlen );
711 /* Dummy destination address for RTSP */
712 memset (&dst, 0, sizeof( struct sockaddr_in ) );
713 dst.ss_family = AF_INET;
717 dstlen = sizeof( struct sockaddr_in );
720 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
721 NULL, 0, (struct sockaddr *)&dst, dstlen );
722 if( psz_sdp == NULL )
725 /* TODO: a=source-filter */
726 if( p_sys->rtcp_mux )
727 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
729 if( rtsp_url != NULL )
730 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
732 /* FIXME: locking?! */
733 for( i = 0; i < p_sys->i_es; i++ )
735 sout_stream_id_t *id = p_sys->es[i];
736 const char *mime_major; /* major MIME type */
737 const char *proto = "RTP/AVP"; /* protocol */
742 mime_major = "video";
745 mime_major = "audio";
754 if( rtsp_url == NULL )
756 switch( p_sys->proto )
761 proto = "TCP/RTP/AVP";
764 proto = "DCCP/RTP/AVP";
766 case IPPROTO_UDPLITE:
771 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
772 id->i_payload_type, false, id->i_bitrate,
773 id->psz_enc, id->i_clock_rate, id->i_channels,
776 if( rtsp_url != NULL )
778 assert( strlen( rtsp_url ) > 0 );
779 bool addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
780 sdp_AddAttribute ( &psz_sdp, "control",
781 addslash ? "%s/trackID=%u" : "%strackID=%u",
786 if( id->listen_fd != NULL )
787 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
788 if( p_sys->proto == IPPROTO_DCCP )
789 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
790 "SC:RTP%c", toupper( mime_major[0] ) );
797 /*****************************************************************************
799 *****************************************************************************/
801 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
803 static const char hex[16] = "0123456789abcdef";
806 for( i = 0; i < i_data; i++ )
808 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
809 s[2*i+1] = hex[(p_data[i] )&0xf];
815 * Shrink the MTU down to a fixed packetization time (for audio).
818 rtp_set_ptime (sout_stream_id_t *id, unsigned ptime_ms, size_t bytes)
820 /* Samples per second */
821 size_t spl = (id->i_clock_rate - 1) * ptime_ms / 1000 + 1;
822 bytes *= id->i_channels;
825 if (spl < rtp_mtu (id)) /* MTU is big enough for ptime */
826 id->i_mtu = 12 + spl;
827 else /* MTU is too small for ptime, align to a sample boundary */
828 id->i_mtu = 12 + (((id->i_mtu - 12) / bytes) * bytes);
831 /** Add an ES as a new RTP stream */
832 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
834 /* NOTE: As a special case, if we use a non-RTP
835 * mux (TS/PS), then p_fmt is NULL. */
836 sout_stream_sys_t *p_sys = p_stream->p_sys;
837 sout_stream_id_t *id;
838 int i_port, cscov = -1;
841 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
844 vlc_object_attach( id, p_stream );
846 /* Choose the port */
851 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
853 i_port = p_sys->i_port_audio;
854 p_sys->i_port_audio = 0;
857 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
859 i_port = p_sys->i_port_video;
860 p_sys->i_port_video = 0;
865 if( p_sys->i_port != p_sys->i_port_audio
866 && p_sys->i_port != p_sys->i_port_video )
868 i_port = p_sys->i_port;
875 id->p_stream = p_stream;
877 id->i_sequence = rand()&0xffff;
878 id->i_payload_type = p_sys->i_payload_type;
879 id->ssrc[0] = rand()&0xff;
880 id->ssrc[1] = rand()&0xff;
881 id->ssrc[2] = rand()&0xff;
882 id->ssrc[3] = rand()&0xff;
886 id->i_clock_rate = 90000; /* most common case for video */
891 id->i_cat = p_fmt->i_cat;
892 if( p_fmt->i_cat == AUDIO_ES )
894 id->i_clock_rate = p_fmt->audio.i_rate;
895 id->i_channels = p_fmt->audio.i_channels;
897 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
901 id->i_cat = VIDEO_ES;
905 id->pf_packetize = NULL;
906 id->i_mtu = config_GetInt( p_stream, "mtu" );
907 if( id->i_mtu <= 12 + 16 )
908 id->i_mtu = 576 - 20 - 8; /* pessimistic */
910 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
912 vlc_mutex_init( &id->lock_sink );
917 id->listen_fd = NULL;
920 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
922 if( p_sys->psz_destination != NULL )
923 switch( p_sys->proto )
930 case VIDEO_ES: code = "RTPV"; break;
931 case AUDIO_ES: code = "RTPARTPV"; break;
932 case SPU_ES: code = "RTPTRPTV"; break;
933 default: code = "RTPORTPV"; break;
935 var_SetString (p_stream, "dccp-service", code);
938 id->listen_fd = net_Listen( VLC_OBJECT(p_stream),
939 p_sys->psz_destination, i_port,
941 if( id->listen_fd == NULL )
943 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
950 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
951 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
952 i_port, ttl, p_sys->proto );
955 msg_Err( p_stream, "cannot create RTP socket" );
958 rtp_add_sink( id, fd, p_sys->rtcp_mux );
964 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
966 if( psz == NULL ) /* Uho! */
969 if( strncmp( psz, "ts", 2 ) == 0 )
971 id->i_payload_type = 33;
972 id->psz_enc = "MP2T";
976 id->psz_enc = "MP2P";
980 switch( p_fmt->i_codec )
982 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
983 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
984 id->i_payload_type = 0;
985 id->psz_enc = "PCMU";
986 id->pf_packetize = rtp_packetize_split;
987 rtp_set_ptime (id, 20, 1);
989 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
990 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
991 id->i_payload_type = 8;
992 id->psz_enc = "PCMA";
993 id->pf_packetize = rtp_packetize_split;
994 rtp_set_ptime (id, 20, 1);
996 case VLC_FOURCC( 's', '1', '6', 'b' ):
997 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
999 id->i_payload_type = 11;
1001 else if( p_fmt->audio.i_channels == 2 &&
1002 p_fmt->audio.i_rate == 44100 )
1004 id->i_payload_type = 10;
1006 id->psz_enc = "L16";
1007 id->pf_packetize = rtp_packetize_split;
1008 rtp_set_ptime (id, 20, 2);
1010 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
1012 id->pf_packetize = rtp_packetize_split;
1013 rtp_set_ptime (id, 20, 1);
1015 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
1016 case VLC_FOURCC( 'm', 'p', '3', ' ' ):
1017 id->i_payload_type = 14;
1018 id->psz_enc = "MPA";
1019 id->pf_packetize = rtp_packetize_mpa;
1021 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
1022 id->i_payload_type = 32;
1023 id->psz_enc = "MPV";
1024 id->pf_packetize = rtp_packetize_mpv;
1026 case VLC_FOURCC( 'a', '5', '2', ' ' ):
1027 id->psz_enc = "ac3";
1028 id->pf_packetize = rtp_packetize_ac3;
1030 case VLC_FOURCC( 'H', '2', '6', '3' ):
1031 id->psz_enc = "H263-1998";
1032 id->pf_packetize = rtp_packetize_h263;
1034 case VLC_FOURCC( 'h', '2', '6', '4' ):
1035 id->psz_enc = "H264";
1036 id->pf_packetize = rtp_packetize_h264;
1037 id->psz_fmtp = NULL;
1039 if( p_fmt->i_extra > 0 )
1041 uint8_t *p_buffer = p_fmt->p_extra;
1042 int i_buffer = p_fmt->i_extra;
1043 char *p_64_sps = NULL;
1044 char *p_64_pps = NULL;
1047 while( i_buffer > 4 &&
1048 p_buffer[0] == 0 && p_buffer[1] == 0 &&
1049 p_buffer[2] == 0 && p_buffer[3] == 1 )
1051 const int i_nal_type = p_buffer[4]&0x1f;
1055 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1058 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1060 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1062 /* we found another startcode */
1067 if( i_nal_type == 7 )
1069 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1070 sprintf_hexa( hexa, &p_buffer[5], 3 );
1072 else if( i_nal_type == 8 )
1074 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1080 if( p_64_sps && p_64_pps &&
1081 ( asprintf( &id->psz_fmtp,
1082 "packetization-mode=1;profile-level-id=%s;"
1083 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1084 p_64_pps ) == -1 ) )
1085 id->psz_fmtp = NULL;
1090 id->psz_fmtp = strdup( "packetization-mode=1" );
1093 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1095 char hexa[2*p_fmt->i_extra +1];
1097 id->psz_enc = "MP4V-ES";
1098 id->pf_packetize = rtp_packetize_split;
1099 if( p_fmt->i_extra > 0 )
1101 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1102 if( asprintf( &id->psz_fmtp,
1103 "profile-level-id=3; config=%s;", hexa ) == -1 )
1104 id->psz_fmtp = NULL;
1108 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1112 char hexa[2*p_fmt->i_extra +1];
1114 id->psz_enc = "mpeg4-generic";
1115 id->pf_packetize = rtp_packetize_mp4a;
1116 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1117 if( asprintf( &id->psz_fmtp,
1118 "streamtype=5; profile-level-id=15; "
1119 "mode=AAC-hbr; config=%s; SizeLength=13; "
1120 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1122 id->psz_fmtp = NULL;
1128 unsigned char config[6];
1129 unsigned int aacsrates[15] = {
1130 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1131 16000, 12000, 11025, 8000, 7350, 0, 0 };
1133 for( i = 0; i < 15; i++ )
1134 if( p_fmt->audio.i_rate == aacsrates[i] )
1140 config[3]=p_fmt->audio.i_channels<<4;
1144 id->psz_enc = "MP4A-LATM";
1145 id->pf_packetize = rtp_packetize_mp4a_latm;
1146 sprintf_hexa( hexa, config, 6 );
1147 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1148 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1149 id->psz_fmtp = NULL;
1153 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1154 id->psz_enc = "AMR";
1155 id->psz_fmtp = strdup( "octet-align=1" );
1156 id->pf_packetize = rtp_packetize_amr;
1158 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1159 id->psz_enc = "AMR-WB";
1160 id->psz_fmtp = strdup( "octet-align=1" );
1161 id->pf_packetize = rtp_packetize_amr;
1163 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
1164 id->i_payload_type = p_sys->i_payload_type++;
1165 id->psz_enc = "SPEEX";
1166 id->pf_packetize = rtp_packetize_spx;
1168 case VLC_FOURCC( 't', '1', '4', '0' ):
1169 id->psz_enc = "t140" ;
1170 id->i_clock_rate = 1000;
1171 id->pf_packetize = rtp_packetize_t140;
1175 msg_Err( p_stream, "cannot add this stream (unsupported "
1176 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1181 cscov += 8 /* UDP */ + 12 /* RTP */;
1183 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1185 if( id->i_payload_type == p_sys->i_payload_type )
1186 p_sys->i_payload_type++;
1188 if( p_sys->rtsp != NULL )
1189 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1190 GetDWBE( id->ssrc ),
1191 p_sys->psz_destination,
1192 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1194 id->p_fifo = block_FifoNew();
1195 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1196 VLC_THREAD_PRIORITY_HIGHEST, false ) )
1199 /* Update p_sys context */
1200 vlc_mutex_lock( &p_sys->lock_es );
1201 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1202 vlc_mutex_unlock( &p_sys->lock_es );
1204 psz_sdp = SDPGenerate( p_stream, NULL );
1206 vlc_mutex_lock( &p_sys->lock_sdp );
1207 free( p_sys->psz_sdp );
1208 p_sys->psz_sdp = psz_sdp;
1209 vlc_mutex_unlock( &p_sys->lock_sdp );
1211 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1213 /* Update SDP (sap/file) */
1214 if( p_sys->b_export_sap ) SapSetup( p_stream );
1215 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1220 Del( p_stream, id );
1224 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1226 sout_stream_sys_t *p_sys = p_stream->p_sys;
1228 if( id->p_fifo != NULL )
1230 vlc_object_kill( id );
1231 block_FifoWake( id->p_fifo );
1232 vlc_thread_join( id );
1233 block_FifoRelease( id->p_fifo );
1236 vlc_mutex_lock( &p_sys->lock_es );
1237 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1238 vlc_mutex_unlock( &p_sys->lock_es );
1241 if( id->i_port == var_GetInteger( p_stream, "port-audio" ) )
1242 p_sys->i_port_audio = id->i_port;
1243 if( id->i_port == var_GetInteger( p_stream, "port-video" ) )
1244 p_sys->i_port_video = id->i_port;
1246 free( id->psz_fmtp );
1249 RtspDelId( p_sys->rtsp, id->rtsp_id );
1251 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1252 if( id->listen_fd != NULL )
1253 net_ListenClose( id->listen_fd );
1255 vlc_mutex_destroy( &id->lock_sink );
1257 /* Update SDP (sap/file) */
1258 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1259 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1261 vlc_object_detach( id );
1262 vlc_object_release( id );
1266 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1271 assert( p_stream->p_sys->p_mux == NULL );
1273 while( p_buffer != NULL )
1275 p_next = p_buffer->p_next;
1276 if( id->pf_packetize( id, p_buffer ) )
1279 block_Release( p_buffer );
1285 /****************************************************************************
1287 ****************************************************************************/
1288 static int SapSetup( sout_stream_t *p_stream )
1290 sout_stream_sys_t *p_sys = p_stream->p_sys;
1291 sout_instance_t *p_sout = p_stream->p_sout;
1293 /* Remove the previous session */
1294 if( p_sys->p_session != NULL)
1296 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1297 p_sys->p_session = NULL;
1300 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1302 announce_method_t *p_method = sout_SAPMethod();
1303 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1305 p_sys->psz_destination,
1307 sout_MethodRelease( p_method );
1313 /****************************************************************************
1315 ****************************************************************************/
1316 static int FileSetup( sout_stream_t *p_stream )
1318 sout_stream_sys_t *p_sys = p_stream->p_sys;
1321 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1323 msg_Err( p_stream, "cannot open file '%s' (%m)",
1324 p_sys->psz_sdp_file );
1325 return VLC_EGENERIC;
1328 fputs( p_sys->psz_sdp, f );
1334 /****************************************************************************
1336 ****************************************************************************/
1337 static int HttpCallback( httpd_file_sys_t *p_args,
1338 httpd_file_t *, uint8_t *p_request,
1339 uint8_t **pp_data, int *pi_data );
1341 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t *url)
1343 sout_stream_sys_t *p_sys = p_stream->p_sys;
1345 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1346 url->i_port > 0 ? url->i_port : 80 );
1347 if( p_sys->p_httpd_host )
1349 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1350 url->psz_path ? url->psz_path : "/",
1353 HttpCallback, (void*)p_sys );
1355 if( p_sys->p_httpd_file == NULL )
1357 return VLC_EGENERIC;
1362 static int HttpCallback( httpd_file_sys_t *p_args,
1363 httpd_file_t *f, uint8_t *p_request,
1364 uint8_t **pp_data, int *pi_data )
1366 VLC_UNUSED(f); VLC_UNUSED(p_request);
1367 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1369 vlc_mutex_lock( &p_sys->lock_sdp );
1370 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1372 *pi_data = strlen( p_sys->psz_sdp );
1373 *pp_data = malloc( *pi_data );
1374 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1381 vlc_mutex_unlock( &p_sys->lock_sdp );
1386 /****************************************************************************
1388 ****************************************************************************/
1389 static void ThreadSend( vlc_object_t *p_this )
1391 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1392 unsigned i_caching = id->i_caching;
1396 block_t *out = block_FifoGet( id->p_fifo );
1398 continue; /* Forced wakeup */
1400 mtime_t i_date = out->i_dts + i_caching;
1401 ssize_t len = out->i_buffer;
1405 vlc_mutex_lock( &id->lock_sink );
1406 unsigned deadc = 0; /* How many dead sockets? */
1407 int deadv[id->sinkc]; /* Dead sockets list */
1409 for( int i = 0; i < id->sinkc; i++ )
1411 SendRTCP( id->sinkv[i].rtcp, out );
1413 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 );
1422 block_Release( out );
1424 for( unsigned i = 0; i < deadc; i++ )
1426 msg_Dbg( id, "removing socket %d", deadv[i] );
1427 rtp_del_sink( id, deadv[i] );
1430 /* Hopefully we won't overflow the SO_MAXCONN accept queue */
1431 while( id->listen_fd != NULL )
1433 int fd = net_Accept( id, id->listen_fd, 0 );
1436 msg_Dbg( id, "adding socket %d", fd );
1437 rtp_add_sink( id, fd, true );
1442 int rtp_add_sink( sout_stream_id_t *id, int fd, bool rtcp_mux )
1444 rtp_sink_t sink = { fd, NULL };
1445 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1447 if( sink.rtcp == NULL )
1448 msg_Err( id, "RTCP failed!" );
1450 vlc_mutex_lock( &id->lock_sink );
1451 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1452 vlc_mutex_unlock( &id->lock_sink );
1456 void rtp_del_sink( sout_stream_id_t *id, int fd )
1458 rtp_sink_t sink = { fd, NULL };
1460 /* NOTE: must be safe to use if fd is not included */
1461 vlc_mutex_lock( &id->lock_sink );
1462 for( int i = 0; i < id->sinkc; i++ )
1464 if (id->sinkv[i].rtp_fd == fd)
1466 sink = id->sinkv[i];
1467 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1471 vlc_mutex_unlock( &id->lock_sink );
1473 CloseRTCP( sink.rtcp );
1474 net_Close( sink.rtp_fd );
1477 uint16_t rtp_get_seq( const sout_stream_id_t *id )
1479 /* This will return values for the next packet.
1480 * Accounting for caching would not be totally trivial. */
1481 return id->i_sequence;
1484 /* FIXME: this is pretty bad - if we remove and then insert an ES
1485 * the number will get unsynched from inside RTSP */
1486 unsigned rtp_get_num( const sout_stream_id_t *id )
1488 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1491 vlc_mutex_lock( &p_sys->lock_es );
1492 for( i = 0; i < p_sys->i_es; i++ )
1494 if( id == p_sys->es[i] )
1497 vlc_mutex_unlock( &p_sys->lock_es );
1503 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1504 int b_marker, int64_t i_pts )
1506 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / INT64_C(1000000);
1508 out->p_buffer[0] = 0x80;
1509 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1510 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1511 out->p_buffer[3] = ( id->i_sequence )&0xff;
1512 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1513 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1514 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1515 out->p_buffer[7] = ( i_timestamp )&0xff;
1517 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1523 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1525 block_FifoPut( id->p_fifo, out );
1529 * @return configured max RTP payload size (including payload type-specific
1530 * headers, excluding RTP and transport headers)
1532 size_t rtp_mtu (const sout_stream_id_t *id)
1534 return id->i_mtu - 12;
1537 /*****************************************************************************
1539 *****************************************************************************/
1541 /** Add an ES to a non-RTP muxed stream */
1542 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1544 sout_input_t *p_input;
1545 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1546 assert( p_mux != NULL );
1548 p_input = sout_MuxAddStream( p_mux, p_fmt );
1549 if( p_input == NULL )
1551 msg_Err( p_stream, "cannot add this stream to the muxer" );
1555 return (sout_stream_id_t *)p_input;
1559 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1562 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1563 assert( p_mux != NULL );
1565 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1570 /** Remove an ES from a non-RTP muxed stream */
1571 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1573 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1574 assert( p_mux != NULL );
1576 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1581 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1582 const block_t *p_buffer )
1584 sout_stream_sys_t *p_sys = p_stream->p_sys;
1585 sout_stream_id_t *id = p_sys->es[0];
1587 int64_t i_dts = p_buffer->i_dts;
1589 uint8_t *p_data = p_buffer->p_buffer;
1590 unsigned int i_data = p_buffer->i_buffer;
1591 unsigned int i_max = id->i_mtu - 12;
1593 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1597 unsigned int i_size;
1599 /* output complete packet */
1600 if( p_sys->packet &&
1601 p_sys->packet->i_buffer + i_data > i_max )
1603 rtp_packetize_send( id, p_sys->packet );
1604 p_sys->packet = NULL;
1607 if( p_sys->packet == NULL )
1609 /* allocate a new packet */
1610 p_sys->packet = block_New( p_stream, id->i_mtu );
1611 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1612 p_sys->packet->i_dts = i_dts;
1613 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1614 i_dts += p_sys->packet->i_length;
1617 i_size = __MIN( i_data,
1618 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1620 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1623 p_sys->packet->i_buffer += i_size;
1632 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
1635 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1641 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1643 p_next = p_buffer->p_next;
1644 block_Release( p_buffer );
1652 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1654 sout_access_out_t *p_grab;
1656 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1657 if( p_grab == NULL )
1660 p_grab->p_module = NULL;
1661 p_grab->p_sout = p_stream->p_sout;
1662 p_grab->psz_access = strdup( "grab" );
1663 p_grab->p_cfg = NULL;
1664 p_grab->psz_path = strdup( "" );
1665 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1666 p_grab->pf_seek = NULL;
1667 p_grab->pf_write = AccessOutGrabberWrite;
1668 vlc_object_attach( p_grab, p_stream );