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 *****************************************************************************/
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
64 /*****************************************************************************
66 *****************************************************************************/
68 #define DEST_TEXT N_("Destination")
69 #define DEST_LONGTEXT N_( \
70 "This is the output URL that will be used." )
71 #define SDP_TEXT N_("SDP")
72 #define SDP_LONGTEXT N_( \
73 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
74 "session will be made available. You must use an url: http://location to " \
75 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
76 "for the SDP to be announced via SAP." )
77 #define SAP_TEXT N_("SAP announcing")
78 #define SAP_LONGTEXT N_("Announce this session with SAP.")
79 #define MUX_TEXT N_("Muxer")
80 #define MUX_LONGTEXT N_( \
81 "This allows you to specify the muxer used for the streaming output. " \
82 "Default is to use no muxer (standard RTP stream)." )
84 #define NAME_TEXT N_("Session name")
85 #define NAME_LONGTEXT N_( \
86 "This is the name of the session that will be announced in the SDP " \
87 "(Session Descriptor)." )
88 #define DESC_TEXT N_("Session description")
89 #define DESC_LONGTEXT N_( \
90 "This allows you to give a short description with details about the stream, " \
91 "that will be announced in the SDP (Session Descriptor)." )
92 #define URL_TEXT N_("Session URL")
93 #define URL_LONGTEXT N_( \
94 "This allows you to give an URL with more details about the stream " \
95 "(often the website of the streaming organization), that will " \
96 "be announced in the SDP (Session Descriptor)." )
97 #define EMAIL_TEXT N_("Session email")
98 #define EMAIL_LONGTEXT N_( \
99 "This allows you to give a contact mail address for the stream, that will " \
100 "be announced in the SDP (Session Descriptor)." )
101 #define PHONE_TEXT N_("Session phone number")
102 #define PHONE_LONGTEXT N_( \
103 "This allows you to give a contact telephone number for the stream, that will " \
104 "be announced in the SDP (Session Descriptor)." )
106 #define PORT_TEXT N_("Port")
107 #define PORT_LONGTEXT N_( \
108 "This allows you to specify the base port for the RTP streaming." )
109 #define PORT_AUDIO_TEXT N_("Audio port")
110 #define PORT_AUDIO_LONGTEXT N_( \
111 "This allows you to specify the default audio port for the RTP streaming." )
112 #define PORT_VIDEO_TEXT N_("Video port")
113 #define PORT_VIDEO_LONGTEXT N_( \
114 "This allows you to specify the default video port for the RTP streaming." )
116 #define TTL_TEXT N_("Hop limit (TTL)")
117 #define TTL_LONGTEXT N_( \
118 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
119 "the multicast packets sent by the stream output (0 = use operating " \
120 "system built-in default).")
122 #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
123 #define RTCP_MUX_LONGTEXT N_( \
124 "This sends and receives RTCP packet multiplexed over the same port " \
127 #define PROTO_TEXT N_("Transport protocol")
128 #define PROTO_LONGTEXT N_( \
129 "This selects which transport protocol to use for RTP." )
131 static const char *const ppsz_protos[] = {
132 "dccp", "sctp", "tcp", "udp", "udplite",
135 static const char *const ppsz_protocols[] = {
136 "DCCP", "SCTP", "TCP", "UDP", "UDP-Lite",
139 #define RFC3016_TEXT N_("MP4A LATM")
140 #define RFC3016_LONGTEXT N_( \
141 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
143 static int Open ( vlc_object_t * );
144 static void Close( vlc_object_t * );
146 #define SOUT_CFG_PREFIX "sout-rtp-"
147 #define MAX_EMPTY_BLOCKS 200
150 set_shortname( _("RTP"));
151 set_description( _("RTP stream output") );
152 set_capability( "sout stream", 0 );
153 add_shortcut( "rtp" );
154 set_category( CAT_SOUT );
155 set_subcategory( SUBCAT_SOUT_STREAM );
157 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
158 DEST_LONGTEXT, true );
160 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
161 SDP_LONGTEXT, true );
162 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
163 MUX_LONGTEXT, true );
164 add_bool( SOUT_CFG_PREFIX "sap", false, NULL, SAP_TEXT, SAP_LONGTEXT,
167 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
168 NAME_LONGTEXT, true );
169 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
170 DESC_LONGTEXT, true );
171 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
172 URL_LONGTEXT, true );
173 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
174 EMAIL_LONGTEXT, true );
175 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
176 PHONE_LONGTEXT, true );
178 add_string( SOUT_CFG_PREFIX "proto", "udp", NULL, PROTO_TEXT,
179 PROTO_LONGTEXT, false );
180 change_string_list( ppsz_protos, ppsz_protocols, NULL );
181 add_integer( SOUT_CFG_PREFIX "port", 50004, NULL, PORT_TEXT,
182 PORT_LONGTEXT, true );
183 add_integer( SOUT_CFG_PREFIX "port-audio", 50000, NULL, PORT_AUDIO_TEXT,
184 PORT_AUDIO_LONGTEXT, true );
185 add_integer( SOUT_CFG_PREFIX "port-video", 50002, NULL, PORT_VIDEO_TEXT,
186 PORT_VIDEO_LONGTEXT, true );
188 add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
189 TTL_LONGTEXT, true );
190 add_bool( SOUT_CFG_PREFIX "rtcp-mux", false, NULL,
191 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, false );
193 add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
194 RFC3016_LONGTEXT, false );
196 set_callbacks( Open, Close );
199 /*****************************************************************************
200 * Exported prototypes
201 *****************************************************************************/
202 static const char *ppsz_sout_options[] = {
203 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
204 "sap", "description", "url", "email", "phone",
209 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
210 static int Del ( sout_stream_t *, sout_stream_id_t * );
211 static int Send( sout_stream_t *, sout_stream_id_t *,
213 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
214 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
215 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
218 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
219 static void ThreadSend( vlc_object_t *p_this );
221 static void SDPHandleUrl( sout_stream_t *, char * );
223 static int SapSetup( sout_stream_t *p_stream );
224 static int FileSetup( sout_stream_t *p_stream );
225 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t * );
227 struct sout_stream_sys_t
231 vlc_mutex_t lock_sdp;
234 bool b_export_sdp_file;
239 session_descriptor_t *p_session;
242 httpd_host_t *p_httpd_host;
243 httpd_file_t *p_httpd_file;
249 char *psz_destination;
253 uint16_t i_port_audio;
254 uint16_t i_port_video;
258 /* when need to use a private one or when using muxer */
261 /* in case we do TS/PS over rtp */
263 sout_access_out_t *p_grab;
269 sout_stream_id_t **es;
272 typedef int (*pf_rtp_packetizer_t)( sout_stream_t *, sout_stream_id_t *,
275 typedef struct rtp_sink_t
281 struct sout_stream_id_t
285 sout_stream_t *p_stream;
288 uint8_t i_payload_type;
300 /* Packetizer specific fields */
301 pf_rtp_packetizer_t pf_packetize;
305 vlc_mutex_t lock_sink;
308 rtsp_stream_id_t *rtsp_id;
311 block_fifo_t *p_fifo;
315 /*****************************************************************************
317 *****************************************************************************/
318 static int Open( vlc_object_t *p_this )
320 sout_stream_t *p_stream = (sout_stream_t*)p_this;
321 sout_instance_t *p_sout = p_stream->p_sout;
322 sout_stream_sys_t *p_sys = NULL;
323 config_chain_t *p_cfg = NULL;
327 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
328 ppsz_sout_options, p_stream->p_cfg );
330 p_sys = malloc( sizeof( sout_stream_sys_t ) );
334 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
336 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
337 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
338 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
339 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
341 p_sys->psz_sdp_file = NULL;
343 if( p_sys->i_port_audio == p_sys->i_port_video )
345 msg_Err( p_stream, "audio and video port cannot be the same" );
346 p_sys->i_port_audio = 0;
347 p_sys->i_port_video = 0;
350 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
352 if( !strcmp( p_cfg->psz_name, "sdp" )
353 && ( p_cfg->psz_value != NULL )
354 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
362 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
365 if( !strncasecmp( psz, "rtsp:", 5 ) )
371 /* Transport protocol */
372 p_sys->proto = IPPROTO_UDP;
373 psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
375 if ((psz == NULL) || !strcasecmp (psz, "udp"))
376 (void)0; /* default */
378 if (!strcasecmp (psz, "dccp"))
380 p_sys->proto = IPPROTO_DCCP;
381 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
385 if (!strcasecmp (psz, "sctp"))
387 p_sys->proto = IPPROTO_TCP;
388 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
393 if (!strcasecmp (psz, "tcp"))
395 p_sys->proto = IPPROTO_TCP;
396 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
400 if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
401 p_sys->proto = IPPROTO_UDPLITE;
403 msg_Warn (p_this, "unknown or unsupported transport protocol \"%s\"",
406 var_Create (p_this, "dccp-service", VLC_VAR_STRING);
408 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
410 msg_Err( p_stream, "missing destination and not in RTSP mode" );
415 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
416 if( p_sys->i_ttl == 0 )
418 /* Normally, we should let the default hop limit up to the core,
419 * but we have to know it to build our SDP properly, which is why
420 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
422 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
425 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
427 p_sys->i_payload_type = 96;
431 p_sys->psz_sdp = NULL;
433 p_sys->b_export_sap = false;
434 p_sys->b_export_sdp_file = false;
435 p_sys->p_session = NULL;
437 p_sys->p_httpd_host = NULL;
438 p_sys->p_httpd_file = NULL;
440 p_stream->p_sys = p_sys;
442 vlc_mutex_init( &p_sys->lock_sdp );
443 vlc_mutex_init( &p_sys->lock_es );
445 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
448 sout_stream_id_t *id;
450 /* Check muxer type */
451 if( strncasecmp( psz, "ps", 2 )
452 && strncasecmp( psz, "mpeg1", 5 )
453 && strncasecmp( psz, "ts", 2 ) )
455 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
457 vlc_mutex_destroy( &p_sys->lock_sdp );
458 vlc_mutex_destroy( &p_sys->lock_es );
463 p_sys->p_grab = GrabberCreate( p_stream );
464 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
467 if( p_sys->p_mux == NULL )
469 msg_Err( p_stream, "cannot create muxer" );
470 sout_AccessOutDelete( p_sys->p_grab );
471 vlc_mutex_destroy( &p_sys->lock_sdp );
472 vlc_mutex_destroy( &p_sys->lock_es );
477 id = Add( p_stream, NULL );
480 sout_MuxDelete( p_sys->p_mux );
481 sout_AccessOutDelete( p_sys->p_grab );
482 vlc_mutex_destroy( &p_sys->lock_sdp );
483 vlc_mutex_destroy( &p_sys->lock_es );
488 p_sys->packet = NULL;
490 p_stream->pf_add = MuxAdd;
491 p_stream->pf_del = MuxDel;
492 p_stream->pf_send = MuxSend;
497 p_sys->p_grab = NULL;
499 p_stream->pf_add = Add;
500 p_stream->pf_del = Del;
501 p_stream->pf_send = Send;
504 if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
505 SDPHandleUrl( p_stream, "sap" );
507 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
510 config_chain_t *p_cfg;
512 SDPHandleUrl( p_stream, psz );
514 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
516 if( !strcmp( p_cfg->psz_name, "sdp" ) )
518 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
521 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
522 if( !strcmp( p_cfg->psz_value, psz ) )
525 SDPHandleUrl( p_stream, p_cfg->psz_value );
531 /* update p_sout->i_out_pace_nocontrol */
532 p_stream->p_sout->i_out_pace_nocontrol++;
537 /*****************************************************************************
539 *****************************************************************************/
540 static void Close( vlc_object_t * p_this )
542 sout_stream_t *p_stream = (sout_stream_t*)p_this;
543 sout_stream_sys_t *p_sys = p_stream->p_sys;
545 /* update p_sout->i_out_pace_nocontrol */
546 p_stream->p_sout->i_out_pace_nocontrol--;
550 assert( p_sys->i_es == 1 );
551 Del( p_stream, p_sys->es[0] );
553 sout_MuxDelete( p_sys->p_mux );
554 sout_AccessOutDelete( p_sys->p_grab );
557 block_Release( p_sys->packet );
559 if( p_sys->b_export_sap )
562 SapSetup( p_stream );
566 if( p_sys->rtsp != NULL )
567 RtspUnsetup( p_sys->rtsp );
569 vlc_mutex_destroy( &p_sys->lock_sdp );
570 vlc_mutex_destroy( &p_sys->lock_es );
572 if( p_sys->p_httpd_file )
573 httpd_FileDelete( p_sys->p_httpd_file );
575 if( p_sys->p_httpd_host )
576 httpd_HostDelete( p_sys->p_httpd_host );
578 free( p_sys->psz_sdp );
580 if( p_sys->b_export_sdp_file )
583 unlink( p_sys->psz_sdp_file );
585 free( p_sys->psz_sdp_file );
587 free( p_sys->psz_destination );
591 /*****************************************************************************
593 *****************************************************************************/
594 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
596 sout_stream_sys_t *p_sys = p_stream->p_sys;
599 vlc_UrlParse( &url, psz_url, 0 );
600 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
602 if( p_sys->p_httpd_file )
604 msg_Err( p_stream, "you can use sdp=http:// only once" );
608 if( HttpSetup( p_stream, &url ) )
610 msg_Err( p_stream, "cannot export SDP as HTTP" );
613 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
615 if( p_sys->rtsp != NULL )
617 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
621 /* FIXME test if destination is multicast or no destination at all */
622 p_sys->rtsp = RtspSetup( p_stream, &url );
623 if( p_sys->rtsp == NULL )
625 msg_Err( p_stream, "cannot export SDP as RTSP" );
628 if( p_sys->p_mux != NULL )
630 sout_stream_id_t *id = p_sys->es[0];
631 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0, GetDWBE( id->ssrc ),
632 p_sys->psz_destination, p_sys->i_ttl,
633 id->i_port, id->i_port + 1 );
636 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
637 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
639 p_sys->b_export_sap = true;
640 SapSetup( p_stream );
642 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
644 if( p_sys->b_export_sdp_file )
646 msg_Err( p_stream, "you can use sdp=file:// only once" );
649 p_sys->b_export_sdp_file = true;
650 psz_url = &psz_url[5];
651 if( psz_url[0] == '/' && psz_url[1] == '/' )
653 p_sys->psz_sdp_file = strdup( psz_url );
657 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
662 vlc_UrlClean( &url );
665 /*****************************************************************************
667 *****************************************************************************/
669 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
671 const sout_stream_sys_t *p_sys = p_stream->p_sys;
673 struct sockaddr_storage dst;
677 * When we have a fixed destination (typically when we do multicast),
678 * we need to put the actual port numbers in the SDP.
679 * When there is no fixed destination, we only support RTSP unicast
680 * on-demand setup, so we should rather let the clients decide which ports
682 * When there is both a fixed destination and RTSP unicast, we need to
683 * put port numbers used by the fixed destination, otherwise the SDP would
684 * become totally incorrect for multicast use. It should be noted that
685 * port numbers from SDP with RTSP are only "recommendation" from the
686 * server to the clients (per RFC2326), so only broken clients will fail
687 * to handle this properly. There is no solution but to use two differents
688 * output chain with two different RTSP URLs if you need to handle this
693 if( p_sys->psz_destination != NULL )
697 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
698 dstlen = sizeof( dst );
699 if( p_sys->es[0]->listen_fd != NULL )
700 getsockname( p_sys->es[0]->listen_fd[0],
701 (struct sockaddr *)&dst, &dstlen );
703 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
704 (struct sockaddr *)&dst, &dstlen );
710 /* Dummy destination address for RTSP */
711 memset (&dst, 0, sizeof( struct sockaddr_in ) );
712 dst.ss_family = AF_INET;
716 dstlen = sizeof( struct sockaddr_in );
719 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
720 NULL, 0, (struct sockaddr *)&dst, dstlen );
721 if( psz_sdp == NULL )
724 /* TODO: a=source-filter */
725 if( p_sys->rtcp_mux )
726 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
728 if( rtsp_url != NULL )
729 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
731 /* FIXME: locking?! */
732 for( i = 0; i < p_sys->i_es; i++ )
734 sout_stream_id_t *id = p_sys->es[i];
735 const char *mime_major; /* major MIME type */
736 const char *proto = "RTP/AVP"; /* protocol */
741 mime_major = "video";
744 mime_major = "audio";
753 if( rtsp_url == NULL )
755 switch( p_sys->proto )
760 proto = "TCP/RTP/AVP";
763 proto = "DCCP/RTP/AVP";
765 case IPPROTO_UDPLITE:
770 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
771 id->i_payload_type, false, id->i_bitrate,
772 id->psz_enc, id->i_clock_rate, id->i_channels,
775 if( rtsp_url != NULL )
777 assert( strlen( rtsp_url ) > 0 );
778 bool addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
779 sdp_AddAttribute ( &psz_sdp, "control",
780 addslash ? "%s/trackID=%u" : "%strackID=%u",
785 if( id->listen_fd != NULL )
786 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
787 if( p_sys->proto == IPPROTO_DCCP )
788 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
789 "SC:RTP%c", toupper( mime_major[0] ) );
796 /*****************************************************************************
798 *****************************************************************************/
800 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
802 static const char hex[16] = "0123456789abcdef";
805 for( i = 0; i < i_data; i++ )
807 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
808 s[2*i+1] = hex[(p_data[i] )&0xf];
814 /** Add an ES as a new RTP stream */
815 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
817 /* NOTE: As a special case, if we use a non-RTP
818 * mux (TS/PS), then p_fmt is NULL. */
819 sout_stream_sys_t *p_sys = p_stream->p_sys;
820 sout_stream_id_t *id;
821 int i_port, cscov = -1;
824 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
827 vlc_object_attach( id, p_stream );
829 /* Choose the port */
834 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
836 i_port = p_sys->i_port_audio;
837 p_sys->i_port_audio = 0;
840 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
842 i_port = p_sys->i_port_video;
843 p_sys->i_port_video = 0;
848 if( p_sys->i_port != p_sys->i_port_audio
849 && p_sys->i_port != p_sys->i_port_video )
851 i_port = p_sys->i_port;
858 id->p_stream = p_stream;
860 id->i_sequence = rand()&0xffff;
861 id->i_payload_type = p_sys->i_payload_type;
862 id->ssrc[0] = rand()&0xff;
863 id->ssrc[1] = rand()&0xff;
864 id->ssrc[2] = rand()&0xff;
865 id->ssrc[3] = rand()&0xff;
869 id->i_clock_rate = 90000; /* most common case for video */
874 id->i_cat = p_fmt->i_cat;
875 if( p_fmt->i_cat == AUDIO_ES )
877 id->i_clock_rate = p_fmt->audio.i_rate;
878 id->i_channels = p_fmt->audio.i_channels;
880 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
884 id->i_cat = VIDEO_ES;
888 id->pf_packetize = NULL;
889 id->i_mtu = config_GetInt( p_stream, "mtu" );
890 if( id->i_mtu <= 12 + 16 )
891 id->i_mtu = 576 - 20 - 8; /* pessimistic */
893 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
895 vlc_mutex_init( &id->lock_sink );
900 id->listen_fd = NULL;
903 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
905 if( p_sys->psz_destination != NULL )
906 switch( p_sys->proto )
913 case VIDEO_ES: code = "RTPV"; break;
914 case AUDIO_ES: code = "RTPARTPV"; break;
915 case SPU_ES: code = "RTPTRPTV"; break;
916 default: code = "RTPORTPV"; break;
918 var_SetString (p_stream, "dccp-service", code);
921 id->listen_fd = net_Listen( VLC_OBJECT(p_stream),
922 p_sys->psz_destination, i_port,
924 if( id->listen_fd == NULL )
926 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
933 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
934 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
935 i_port, ttl, p_sys->proto );
938 msg_Err( p_stream, "cannot create RTP socket" );
941 rtp_add_sink( id, fd, p_sys->rtcp_mux );
947 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
949 if( psz == NULL ) /* Uho! */
952 if( strncmp( psz, "ts", 2 ) == 0 )
954 id->i_payload_type = 33;
955 id->psz_enc = "MP2T";
959 id->psz_enc = "MP2P";
963 switch( p_fmt->i_codec )
965 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
966 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
967 id->i_payload_type = 0;
968 id->psz_enc = "PCMU";
969 id->pf_packetize = rtp_packetize_l8;
971 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
972 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
973 id->i_payload_type = 8;
974 id->psz_enc = "PCMA";
975 id->pf_packetize = rtp_packetize_l8;
977 case VLC_FOURCC( 's', '1', '6', 'b' ):
978 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
980 id->i_payload_type = 11;
982 else if( p_fmt->audio.i_channels == 2 &&
983 p_fmt->audio.i_rate == 44100 )
985 id->i_payload_type = 10;
988 id->pf_packetize = rtp_packetize_l16;
990 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
992 id->pf_packetize = rtp_packetize_l8;
994 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
995 case VLC_FOURCC( 'm', 'p', '3', ' ' ):
996 id->i_payload_type = 14;
998 id->pf_packetize = rtp_packetize_mpa;
1000 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
1001 id->i_payload_type = 32;
1002 id->psz_enc = "MPV";
1003 id->pf_packetize = rtp_packetize_mpv;
1005 case VLC_FOURCC( 'a', '5', '2', ' ' ):
1006 id->psz_enc = "ac3";
1007 id->pf_packetize = rtp_packetize_ac3;
1009 case VLC_FOURCC( 'H', '2', '6', '3' ):
1010 id->psz_enc = "H263-1998";
1011 id->pf_packetize = rtp_packetize_h263;
1013 case VLC_FOURCC( 'h', '2', '6', '4' ):
1014 id->psz_enc = "H264";
1015 id->pf_packetize = rtp_packetize_h264;
1016 id->psz_fmtp = NULL;
1018 if( p_fmt->i_extra > 0 )
1020 uint8_t *p_buffer = p_fmt->p_extra;
1021 int i_buffer = p_fmt->i_extra;
1022 char *p_64_sps = NULL;
1023 char *p_64_pps = NULL;
1026 while( i_buffer > 4 &&
1027 p_buffer[0] == 0 && p_buffer[1] == 0 &&
1028 p_buffer[2] == 0 && p_buffer[3] == 1 )
1030 const int i_nal_type = p_buffer[4]&0x1f;
1034 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1037 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1039 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1041 /* we found another startcode */
1046 if( i_nal_type == 7 )
1048 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1049 sprintf_hexa( hexa, &p_buffer[5], 3 );
1051 else if( i_nal_type == 8 )
1053 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1059 if( p_64_sps && p_64_pps &&
1060 ( asprintf( &id->psz_fmtp,
1061 "packetization-mode=1;profile-level-id=%s;"
1062 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1063 p_64_pps ) == -1 ) )
1064 id->psz_fmtp = NULL;
1069 id->psz_fmtp = strdup( "packetization-mode=1" );
1072 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1074 char hexa[2*p_fmt->i_extra +1];
1076 id->psz_enc = "MP4V-ES";
1077 id->pf_packetize = rtp_packetize_split;
1078 if( p_fmt->i_extra > 0 )
1080 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1081 if( asprintf( &id->psz_fmtp,
1082 "profile-level-id=3; config=%s;", hexa ) == -1 )
1083 id->psz_fmtp = NULL;
1087 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1091 char hexa[2*p_fmt->i_extra +1];
1093 id->psz_enc = "mpeg4-generic";
1094 id->pf_packetize = rtp_packetize_mp4a;
1095 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1096 if( asprintf( &id->psz_fmtp,
1097 "streamtype=5; profile-level-id=15; "
1098 "mode=AAC-hbr; config=%s; SizeLength=13; "
1099 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1101 id->psz_fmtp = NULL;
1107 unsigned char config[6];
1108 unsigned int aacsrates[15] = {
1109 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1110 16000, 12000, 11025, 8000, 7350, 0, 0 };
1112 for( i = 0; i < 15; i++ )
1113 if( p_fmt->audio.i_rate == aacsrates[i] )
1119 config[3]=p_fmt->audio.i_channels<<4;
1123 id->psz_enc = "MP4A-LATM";
1124 id->pf_packetize = rtp_packetize_mp4a_latm;
1125 sprintf_hexa( hexa, config, 6 );
1126 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1127 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1128 id->psz_fmtp = NULL;
1132 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1133 id->psz_enc = "AMR";
1134 id->psz_fmtp = strdup( "octet-align=1" );
1135 id->pf_packetize = rtp_packetize_amr;
1137 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1138 id->psz_enc = "AMR-WB";
1139 id->psz_fmtp = strdup( "octet-align=1" );
1140 id->pf_packetize = rtp_packetize_amr;
1142 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
1143 id->i_payload_type = p_sys->i_payload_type++;
1144 id->psz_enc = "SPEEX";
1145 id->pf_packetize = rtp_packetize_spx;
1147 case VLC_FOURCC( 't', '1', '4', '0' ):
1148 id->psz_enc = "t140" ;
1149 id->i_clock_rate = 1000;
1150 id->pf_packetize = rtp_packetize_t140;
1154 msg_Err( p_stream, "cannot add this stream (unsupported "
1155 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1160 cscov += 8 /* UDP */ + 12 /* RTP */;
1162 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1164 if( id->i_payload_type == p_sys->i_payload_type )
1165 p_sys->i_payload_type++;
1167 if( p_sys->rtsp != NULL )
1168 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1169 GetDWBE( id->ssrc ),
1170 p_sys->psz_destination,
1171 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1173 id->p_fifo = block_FifoNew();
1174 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1175 VLC_THREAD_PRIORITY_HIGHEST, false ) )
1178 /* Update p_sys context */
1179 vlc_mutex_lock( &p_sys->lock_es );
1180 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1181 vlc_mutex_unlock( &p_sys->lock_es );
1183 psz_sdp = SDPGenerate( p_stream, NULL );
1185 vlc_mutex_lock( &p_sys->lock_sdp );
1186 free( p_sys->psz_sdp );
1187 p_sys->psz_sdp = psz_sdp;
1188 vlc_mutex_unlock( &p_sys->lock_sdp );
1190 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1192 /* Update SDP (sap/file) */
1193 if( p_sys->b_export_sap ) SapSetup( p_stream );
1194 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1199 Del( p_stream, id );
1203 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1205 sout_stream_sys_t *p_sys = p_stream->p_sys;
1207 if( id->p_fifo != NULL )
1209 vlc_object_kill( id );
1210 block_FifoWake( id->p_fifo );
1211 vlc_thread_join( id );
1212 block_FifoRelease( id->p_fifo );
1215 vlc_mutex_lock( &p_sys->lock_es );
1216 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1217 vlc_mutex_unlock( &p_sys->lock_es );
1220 if( id->i_port == var_GetInteger( p_stream, "port-audio" ) )
1221 p_sys->i_port_audio = id->i_port;
1222 if( id->i_port == var_GetInteger( p_stream, "port-video" ) )
1223 p_sys->i_port_video = id->i_port;
1225 free( id->psz_fmtp );
1228 RtspDelId( p_sys->rtsp, id->rtsp_id );
1230 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1231 if( id->listen_fd != NULL )
1232 net_ListenClose( id->listen_fd );
1234 vlc_mutex_destroy( &id->lock_sink );
1236 /* Update SDP (sap/file) */
1237 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1238 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1240 vlc_object_detach( id );
1241 vlc_object_release( id );
1245 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1250 assert( p_stream->p_sys->p_mux == NULL );
1252 while( p_buffer != NULL )
1254 p_next = p_buffer->p_next;
1255 if( id->pf_packetize( p_stream, id, p_buffer ) )
1258 block_Release( p_buffer );
1264 /****************************************************************************
1266 ****************************************************************************/
1267 static int SapSetup( sout_stream_t *p_stream )
1269 sout_stream_sys_t *p_sys = p_stream->p_sys;
1270 sout_instance_t *p_sout = p_stream->p_sout;
1272 /* Remove the previous session */
1273 if( p_sys->p_session != NULL)
1275 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1276 p_sys->p_session = NULL;
1279 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1281 announce_method_t *p_method = sout_SAPMethod();
1282 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1284 p_sys->psz_destination,
1286 sout_MethodRelease( p_method );
1292 /****************************************************************************
1294 ****************************************************************************/
1295 static int FileSetup( sout_stream_t *p_stream )
1297 sout_stream_sys_t *p_sys = p_stream->p_sys;
1300 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1302 msg_Err( p_stream, "cannot open file '%s' (%m)",
1303 p_sys->psz_sdp_file );
1304 return VLC_EGENERIC;
1307 fputs( p_sys->psz_sdp, f );
1313 /****************************************************************************
1315 ****************************************************************************/
1316 static int HttpCallback( httpd_file_sys_t *p_args,
1317 httpd_file_t *, uint8_t *p_request,
1318 uint8_t **pp_data, int *pi_data );
1320 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t *url)
1322 sout_stream_sys_t *p_sys = p_stream->p_sys;
1324 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1325 url->i_port > 0 ? url->i_port : 80 );
1326 if( p_sys->p_httpd_host )
1328 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1329 url->psz_path ? url->psz_path : "/",
1332 HttpCallback, (void*)p_sys );
1334 if( p_sys->p_httpd_file == NULL )
1336 return VLC_EGENERIC;
1341 static int HttpCallback( httpd_file_sys_t *p_args,
1342 httpd_file_t *f, uint8_t *p_request,
1343 uint8_t **pp_data, int *pi_data )
1345 VLC_UNUSED(f); VLC_UNUSED(p_request);
1346 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1348 vlc_mutex_lock( &p_sys->lock_sdp );
1349 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1351 *pi_data = strlen( p_sys->psz_sdp );
1352 *pp_data = malloc( *pi_data );
1353 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1360 vlc_mutex_unlock( &p_sys->lock_sdp );
1365 /****************************************************************************
1367 ****************************************************************************/
1368 static void ThreadSend( vlc_object_t *p_this )
1370 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1371 unsigned i_caching = id->i_caching;
1375 block_t *out = block_FifoGet( id->p_fifo );
1377 continue; /* Forced wakeup */
1379 mtime_t i_date = out->i_dts + i_caching;
1380 ssize_t len = out->i_buffer;
1384 vlc_mutex_lock( &id->lock_sink );
1385 unsigned deadc = 0; /* How many dead sockets? */
1386 int deadv[id->sinkc]; /* Dead sockets list */
1388 for( int i = 0; i < id->sinkc; i++ )
1390 SendRTCP( id->sinkv[i].rtcp, out );
1392 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1394 /* Retry sending to root out soft-errors */
1395 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1398 deadv[deadc++] = id->sinkv[i].rtp_fd;
1400 vlc_mutex_unlock( &id->lock_sink );
1401 block_Release( out );
1403 for( unsigned i = 0; i < deadc; i++ )
1405 msg_Dbg( id, "removing socket %d", deadv[i] );
1406 rtp_del_sink( id, deadv[i] );
1409 /* Hopefully we won't overflow the SO_MAXCONN accept queue */
1410 while( id->listen_fd != NULL )
1412 int fd = net_Accept( id, id->listen_fd, 0 );
1415 msg_Dbg( id, "adding socket %d", fd );
1416 rtp_add_sink( id, fd, true );
1421 int rtp_add_sink( sout_stream_id_t *id, int fd, bool rtcp_mux )
1423 rtp_sink_t sink = { fd, NULL };
1424 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1426 if( sink.rtcp == NULL )
1427 msg_Err( id, "RTCP failed!" );
1429 vlc_mutex_lock( &id->lock_sink );
1430 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1431 vlc_mutex_unlock( &id->lock_sink );
1435 void rtp_del_sink( sout_stream_id_t *id, int fd )
1437 rtp_sink_t sink = { fd, NULL };
1439 /* NOTE: must be safe to use if fd is not included */
1440 vlc_mutex_lock( &id->lock_sink );
1441 for( int i = 0; i < id->sinkc; i++ )
1443 if (id->sinkv[i].rtp_fd == fd)
1445 sink = id->sinkv[i];
1446 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1450 vlc_mutex_unlock( &id->lock_sink );
1452 CloseRTCP( sink.rtcp );
1453 net_Close( sink.rtp_fd );
1456 uint16_t rtp_get_seq( const sout_stream_id_t *id )
1458 /* This will return values for the next packet.
1459 * Accounting for caching would not be totally trivial. */
1460 return id->i_sequence;
1463 /* FIXME: this is pretty bad - if we remove and then insert an ES
1464 * the number will get unsynched from inside RTSP */
1465 unsigned rtp_get_num( const sout_stream_id_t *id )
1467 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1470 vlc_mutex_lock( &p_sys->lock_es );
1471 for( i = 0; i < p_sys->i_es; i++ )
1473 if( id == p_sys->es[i] )
1476 vlc_mutex_unlock( &p_sys->lock_es );
1482 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1483 int b_marker, int64_t i_pts )
1485 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / INT64_C(1000000);
1487 out->p_buffer[0] = 0x80;
1488 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1489 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1490 out->p_buffer[3] = ( id->i_sequence )&0xff;
1491 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1492 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1493 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1494 out->p_buffer[7] = ( i_timestamp )&0xff;
1496 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1502 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1504 block_FifoPut( id->p_fifo, out );
1508 * @return configured max RTP payload size (including payload type-specific
1509 * headers, excluding RTP and transport headers)
1511 size_t rtp_mtu (const sout_stream_id_t *id)
1513 return id->i_mtu - 12;
1517 * @return number of audio samples to include for a given packetization time
1518 * (this really only makes sense for audio formats).
1520 size_t rtp_plen (const sout_stream_id_t * id, unsigned ptime_ms)
1522 return id->i_channels * (((id->i_clock_rate - 1) * ptime_ms / 1000) + 1);
1526 /*****************************************************************************
1528 *****************************************************************************/
1530 /** Add an ES to a non-RTP muxed stream */
1531 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1533 sout_input_t *p_input;
1534 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1535 assert( p_mux != NULL );
1537 p_input = sout_MuxAddStream( p_mux, p_fmt );
1538 if( p_input == NULL )
1540 msg_Err( p_stream, "cannot add this stream to the muxer" );
1544 return (sout_stream_id_t *)p_input;
1548 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1551 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1552 assert( p_mux != NULL );
1554 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1559 /** Remove an ES from a non-RTP muxed stream */
1560 static int MuxDel( 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_MuxDeleteStream( p_mux, (sout_input_t *)id );
1570 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1571 const block_t *p_buffer )
1573 sout_stream_sys_t *p_sys = p_stream->p_sys;
1574 sout_stream_id_t *id = p_sys->es[0];
1576 int64_t i_dts = p_buffer->i_dts;
1578 uint8_t *p_data = p_buffer->p_buffer;
1579 unsigned int i_data = p_buffer->i_buffer;
1580 unsigned int i_max = id->i_mtu - 12;
1582 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1586 unsigned int i_size;
1588 /* output complete packet */
1589 if( p_sys->packet &&
1590 p_sys->packet->i_buffer + i_data > i_max )
1592 rtp_packetize_send( id, p_sys->packet );
1593 p_sys->packet = NULL;
1596 if( p_sys->packet == NULL )
1598 /* allocate a new packet */
1599 p_sys->packet = block_New( p_stream, id->i_mtu );
1600 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1601 p_sys->packet->i_dts = i_dts;
1602 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1603 i_dts += p_sys->packet->i_length;
1606 i_size = __MIN( i_data,
1607 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1609 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1612 p_sys->packet->i_buffer += i_size;
1621 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
1624 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1630 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1632 p_next = p_buffer->p_next;
1633 block_Release( p_buffer );
1641 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1643 sout_access_out_t *p_grab;
1645 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1646 if( p_grab == NULL )
1649 p_grab->p_module = NULL;
1650 p_grab->p_sout = p_stream->p_sout;
1651 p_grab->psz_access = strdup( "grab" );
1652 p_grab->p_cfg = NULL;
1653 p_grab->psz_path = strdup( "" );
1654 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1655 p_grab->pf_seek = NULL;
1656 p_grab->pf_write = AccessOutGrabberWrite;
1657 vlc_object_attach( p_grab, p_stream );