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_t *, sout_stream_id_t *,
277 typedef struct rtp_sink_t
283 struct sout_stream_id_t
287 sout_stream_t *p_stream;
290 uint8_t i_payload_type;
302 /* Packetizer specific fields */
303 pf_rtp_packetizer_t pf_packetize;
307 vlc_mutex_t lock_sink;
310 rtsp_stream_id_t *rtsp_id;
313 block_fifo_t *p_fifo;
317 /*****************************************************************************
319 *****************************************************************************/
320 static int Open( vlc_object_t *p_this )
322 sout_stream_t *p_stream = (sout_stream_t*)p_this;
323 sout_instance_t *p_sout = p_stream->p_sout;
324 sout_stream_sys_t *p_sys = NULL;
325 config_chain_t *p_cfg = NULL;
329 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
330 ppsz_sout_options, p_stream->p_cfg );
332 p_sys = malloc( sizeof( sout_stream_sys_t ) );
336 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
338 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
339 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
340 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
341 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
343 p_sys->psz_sdp_file = NULL;
345 if( p_sys->i_port_audio == p_sys->i_port_video )
347 msg_Err( p_stream, "audio and video port cannot be the same" );
348 p_sys->i_port_audio = 0;
349 p_sys->i_port_video = 0;
352 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
354 if( !strcmp( p_cfg->psz_name, "sdp" )
355 && ( p_cfg->psz_value != NULL )
356 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
364 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
367 if( !strncasecmp( psz, "rtsp:", 5 ) )
373 /* Transport protocol */
374 p_sys->proto = IPPROTO_UDP;
375 psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
377 if ((psz == NULL) || !strcasecmp (psz, "udp"))
378 (void)0; /* default */
380 if (!strcasecmp (psz, "dccp"))
382 p_sys->proto = IPPROTO_DCCP;
383 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
387 if (!strcasecmp (psz, "sctp"))
389 p_sys->proto = IPPROTO_TCP;
390 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
395 if (!strcasecmp (psz, "tcp"))
397 p_sys->proto = IPPROTO_TCP;
398 p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
402 if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
403 p_sys->proto = IPPROTO_UDPLITE;
405 msg_Warn (p_this, "unknown or unsupported transport protocol \"%s\"",
408 var_Create (p_this, "dccp-service", VLC_VAR_STRING);
410 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
412 msg_Err( p_stream, "missing destination and not in RTSP mode" );
417 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
418 if( p_sys->i_ttl == 0 )
420 /* Normally, we should let the default hop limit up to the core,
421 * but we have to know it to build our SDP properly, which is why
422 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
424 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
427 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
429 p_sys->i_payload_type = 96;
433 p_sys->psz_sdp = NULL;
435 p_sys->b_export_sap = false;
436 p_sys->b_export_sdp_file = false;
437 p_sys->p_session = NULL;
439 p_sys->p_httpd_host = NULL;
440 p_sys->p_httpd_file = NULL;
442 p_stream->p_sys = p_sys;
444 vlc_mutex_init( &p_sys->lock_sdp );
445 vlc_mutex_init( &p_sys->lock_es );
447 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
450 sout_stream_id_t *id;
452 /* Check muxer type */
453 if( strncasecmp( psz, "ps", 2 )
454 && strncasecmp( psz, "mpeg1", 5 )
455 && strncasecmp( psz, "ts", 2 ) )
457 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
459 vlc_mutex_destroy( &p_sys->lock_sdp );
460 vlc_mutex_destroy( &p_sys->lock_es );
465 p_sys->p_grab = GrabberCreate( p_stream );
466 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
469 if( p_sys->p_mux == NULL )
471 msg_Err( p_stream, "cannot create muxer" );
472 sout_AccessOutDelete( p_sys->p_grab );
473 vlc_mutex_destroy( &p_sys->lock_sdp );
474 vlc_mutex_destroy( &p_sys->lock_es );
479 id = Add( p_stream, NULL );
482 sout_MuxDelete( p_sys->p_mux );
483 sout_AccessOutDelete( p_sys->p_grab );
484 vlc_mutex_destroy( &p_sys->lock_sdp );
485 vlc_mutex_destroy( &p_sys->lock_es );
490 p_sys->packet = NULL;
492 p_stream->pf_add = MuxAdd;
493 p_stream->pf_del = MuxDel;
494 p_stream->pf_send = MuxSend;
499 p_sys->p_grab = NULL;
501 p_stream->pf_add = Add;
502 p_stream->pf_del = Del;
503 p_stream->pf_send = Send;
506 if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
507 SDPHandleUrl( p_stream, "sap" );
509 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
512 config_chain_t *p_cfg;
514 SDPHandleUrl( p_stream, psz );
516 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
518 if( !strcmp( p_cfg->psz_name, "sdp" ) )
520 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
523 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
524 if( !strcmp( p_cfg->psz_value, psz ) )
527 SDPHandleUrl( p_stream, p_cfg->psz_value );
533 /* update p_sout->i_out_pace_nocontrol */
534 p_stream->p_sout->i_out_pace_nocontrol++;
539 /*****************************************************************************
541 *****************************************************************************/
542 static void Close( vlc_object_t * p_this )
544 sout_stream_t *p_stream = (sout_stream_t*)p_this;
545 sout_stream_sys_t *p_sys = p_stream->p_sys;
547 /* update p_sout->i_out_pace_nocontrol */
548 p_stream->p_sout->i_out_pace_nocontrol--;
552 assert( p_sys->i_es == 1 );
553 Del( p_stream, p_sys->es[0] );
555 sout_MuxDelete( p_sys->p_mux );
556 sout_AccessOutDelete( p_sys->p_grab );
559 block_Release( p_sys->packet );
561 if( p_sys->b_export_sap )
564 SapSetup( p_stream );
568 if( p_sys->rtsp != NULL )
569 RtspUnsetup( p_sys->rtsp );
571 vlc_mutex_destroy( &p_sys->lock_sdp );
572 vlc_mutex_destroy( &p_sys->lock_es );
574 if( p_sys->p_httpd_file )
575 httpd_FileDelete( p_sys->p_httpd_file );
577 if( p_sys->p_httpd_host )
578 httpd_HostDelete( p_sys->p_httpd_host );
580 free( p_sys->psz_sdp );
582 if( p_sys->b_export_sdp_file )
585 unlink( p_sys->psz_sdp_file );
587 free( p_sys->psz_sdp_file );
589 free( p_sys->psz_destination );
593 /*****************************************************************************
595 *****************************************************************************/
596 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
598 sout_stream_sys_t *p_sys = p_stream->p_sys;
601 vlc_UrlParse( &url, psz_url, 0 );
602 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
604 if( p_sys->p_httpd_file )
606 msg_Err( p_stream, "you can use sdp=http:// only once" );
610 if( HttpSetup( p_stream, &url ) )
612 msg_Err( p_stream, "cannot export SDP as HTTP" );
615 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
617 if( p_sys->rtsp != NULL )
619 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
623 /* FIXME test if destination is multicast or no destination at all */
624 p_sys->rtsp = RtspSetup( p_stream, &url );
625 if( p_sys->rtsp == NULL )
627 msg_Err( p_stream, "cannot export SDP as RTSP" );
630 if( p_sys->p_mux != NULL )
632 sout_stream_id_t *id = p_sys->es[0];
633 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0, GetDWBE( id->ssrc ),
634 p_sys->psz_destination, p_sys->i_ttl,
635 id->i_port, id->i_port + 1 );
638 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
639 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
641 p_sys->b_export_sap = true;
642 SapSetup( p_stream );
644 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
646 if( p_sys->b_export_sdp_file )
648 msg_Err( p_stream, "you can use sdp=file:// only once" );
651 p_sys->b_export_sdp_file = true;
652 psz_url = &psz_url[5];
653 if( psz_url[0] == '/' && psz_url[1] == '/' )
655 p_sys->psz_sdp_file = strdup( psz_url );
659 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
664 vlc_UrlClean( &url );
667 /*****************************************************************************
669 *****************************************************************************/
671 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
673 const sout_stream_sys_t *p_sys = p_stream->p_sys;
675 struct sockaddr_storage dst;
679 * When we have a fixed destination (typically when we do multicast),
680 * we need to put the actual port numbers in the SDP.
681 * When there is no fixed destination, we only support RTSP unicast
682 * on-demand setup, so we should rather let the clients decide which ports
684 * When there is both a fixed destination and RTSP unicast, we need to
685 * put port numbers used by the fixed destination, otherwise the SDP would
686 * become totally incorrect for multicast use. It should be noted that
687 * port numbers from SDP with RTSP are only "recommendation" from the
688 * server to the clients (per RFC2326), so only broken clients will fail
689 * to handle this properly. There is no solution but to use two differents
690 * output chain with two different RTSP URLs if you need to handle this
695 if( p_sys->psz_destination != NULL )
699 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
700 dstlen = sizeof( dst );
701 if( p_sys->es[0]->listen_fd != NULL )
702 getsockname( p_sys->es[0]->listen_fd[0],
703 (struct sockaddr *)&dst, &dstlen );
705 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
706 (struct sockaddr *)&dst, &dstlen );
712 /* Dummy destination address for RTSP */
713 memset (&dst, 0, sizeof( struct sockaddr_in ) );
714 dst.ss_family = AF_INET;
718 dstlen = sizeof( struct sockaddr_in );
721 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
722 NULL, 0, (struct sockaddr *)&dst, dstlen );
723 if( psz_sdp == NULL )
726 /* TODO: a=source-filter */
727 if( p_sys->rtcp_mux )
728 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
730 if( rtsp_url != NULL )
731 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
733 /* FIXME: locking?! */
734 for( i = 0; i < p_sys->i_es; i++ )
736 sout_stream_id_t *id = p_sys->es[i];
737 const char *mime_major; /* major MIME type */
738 const char *proto = "RTP/AVP"; /* protocol */
743 mime_major = "video";
746 mime_major = "audio";
755 if( rtsp_url == NULL )
757 switch( p_sys->proto )
762 proto = "TCP/RTP/AVP";
765 proto = "DCCP/RTP/AVP";
767 case IPPROTO_UDPLITE:
772 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
773 id->i_payload_type, false, id->i_bitrate,
774 id->psz_enc, id->i_clock_rate, id->i_channels,
777 if( rtsp_url != NULL )
779 assert( strlen( rtsp_url ) > 0 );
780 bool addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
781 sdp_AddAttribute ( &psz_sdp, "control",
782 addslash ? "%s/trackID=%u" : "%strackID=%u",
787 if( id->listen_fd != NULL )
788 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
789 if( p_sys->proto == IPPROTO_DCCP )
790 sdp_AddAttribute( &psz_sdp, "dccp-service-code",
791 "SC:RTP%c", toupper( mime_major[0] ) );
798 /*****************************************************************************
800 *****************************************************************************/
802 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
804 static const char hex[16] = "0123456789abcdef";
807 for( i = 0; i < i_data; i++ )
809 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
810 s[2*i+1] = hex[(p_data[i] )&0xf];
816 * Shrink the MTU down to a fixed packetization time (for audio).
819 rtp_set_ptime (sout_stream_id_t *id, unsigned ptime_ms, size_t bytes)
821 /* Samples per second */
822 size_t spl = (id->i_clock_rate - 1) * ptime_ms / 1000 + 1;
823 bytes *= id->i_channels;
826 if (spl < rtp_mtu (id)) /* MTU is big enough for ptime */
827 id->i_mtu = 12 + spl;
828 else /* MTU is too small for ptime, align to a sample boundary */
829 id->i_mtu = (id->i_mtu / bytes) * bytes;
832 /** Add an ES as a new RTP stream */
833 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
835 /* NOTE: As a special case, if we use a non-RTP
836 * mux (TS/PS), then p_fmt is NULL. */
837 sout_stream_sys_t *p_sys = p_stream->p_sys;
838 sout_stream_id_t *id;
839 int i_port, cscov = -1;
842 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
845 vlc_object_attach( id, p_stream );
847 /* Choose the port */
852 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
854 i_port = p_sys->i_port_audio;
855 p_sys->i_port_audio = 0;
858 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
860 i_port = p_sys->i_port_video;
861 p_sys->i_port_video = 0;
866 if( p_sys->i_port != p_sys->i_port_audio
867 && p_sys->i_port != p_sys->i_port_video )
869 i_port = p_sys->i_port;
876 id->p_stream = p_stream;
878 id->i_sequence = rand()&0xffff;
879 id->i_payload_type = p_sys->i_payload_type;
880 id->ssrc[0] = rand()&0xff;
881 id->ssrc[1] = rand()&0xff;
882 id->ssrc[2] = rand()&0xff;
883 id->ssrc[3] = rand()&0xff;
887 id->i_clock_rate = 90000; /* most common case for video */
892 id->i_cat = p_fmt->i_cat;
893 if( p_fmt->i_cat == AUDIO_ES )
895 id->i_clock_rate = p_fmt->audio.i_rate;
896 id->i_channels = p_fmt->audio.i_channels;
898 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
902 id->i_cat = VIDEO_ES;
906 id->pf_packetize = NULL;
907 id->i_mtu = config_GetInt( p_stream, "mtu" );
908 if( id->i_mtu <= 12 + 16 )
909 id->i_mtu = 576 - 20 - 8; /* pessimistic */
911 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
913 vlc_mutex_init( &id->lock_sink );
918 id->listen_fd = NULL;
921 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
923 if( p_sys->psz_destination != NULL )
924 switch( p_sys->proto )
931 case VIDEO_ES: code = "RTPV"; break;
932 case AUDIO_ES: code = "RTPARTPV"; break;
933 case SPU_ES: code = "RTPTRPTV"; break;
934 default: code = "RTPORTPV"; break;
936 var_SetString (p_stream, "dccp-service", code);
939 id->listen_fd = net_Listen( VLC_OBJECT(p_stream),
940 p_sys->psz_destination, i_port,
942 if( id->listen_fd == NULL )
944 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
951 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
952 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
953 i_port, ttl, p_sys->proto );
956 msg_Err( p_stream, "cannot create RTP socket" );
959 rtp_add_sink( id, fd, p_sys->rtcp_mux );
965 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
967 if( psz == NULL ) /* Uho! */
970 if( strncmp( psz, "ts", 2 ) == 0 )
972 id->i_payload_type = 33;
973 id->psz_enc = "MP2T";
977 id->psz_enc = "MP2P";
981 switch( p_fmt->i_codec )
983 case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
984 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
985 id->i_payload_type = 0;
986 id->psz_enc = "PCMU";
987 id->pf_packetize = rtp_packetize_split;
988 rtp_set_ptime (id, 20, 1);
990 case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
991 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
992 id->i_payload_type = 8;
993 id->psz_enc = "PCMA";
994 id->pf_packetize = rtp_packetize_split;
995 rtp_set_ptime (id, 20, 1);
997 case VLC_FOURCC( 's', '1', '6', 'b' ):
998 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
1000 id->i_payload_type = 11;
1002 else if( p_fmt->audio.i_channels == 2 &&
1003 p_fmt->audio.i_rate == 44100 )
1005 id->i_payload_type = 10;
1007 id->psz_enc = "L16";
1008 id->pf_packetize = rtp_packetize_split;
1009 rtp_set_ptime (id, 20, 1);
1011 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
1013 id->pf_packetize = rtp_packetize_split;
1014 rtp_set_ptime (id, 20, 1);
1016 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
1017 case VLC_FOURCC( 'm', 'p', '3', ' ' ):
1018 id->i_payload_type = 14;
1019 id->psz_enc = "MPA";
1020 id->pf_packetize = rtp_packetize_mpa;
1022 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
1023 id->i_payload_type = 32;
1024 id->psz_enc = "MPV";
1025 id->pf_packetize = rtp_packetize_mpv;
1027 case VLC_FOURCC( 'a', '5', '2', ' ' ):
1028 id->psz_enc = "ac3";
1029 id->pf_packetize = rtp_packetize_ac3;
1031 case VLC_FOURCC( 'H', '2', '6', '3' ):
1032 id->psz_enc = "H263-1998";
1033 id->pf_packetize = rtp_packetize_h263;
1035 case VLC_FOURCC( 'h', '2', '6', '4' ):
1036 id->psz_enc = "H264";
1037 id->pf_packetize = rtp_packetize_h264;
1038 id->psz_fmtp = NULL;
1040 if( p_fmt->i_extra > 0 )
1042 uint8_t *p_buffer = p_fmt->p_extra;
1043 int i_buffer = p_fmt->i_extra;
1044 char *p_64_sps = NULL;
1045 char *p_64_pps = NULL;
1048 while( i_buffer > 4 &&
1049 p_buffer[0] == 0 && p_buffer[1] == 0 &&
1050 p_buffer[2] == 0 && p_buffer[3] == 1 )
1052 const int i_nal_type = p_buffer[4]&0x1f;
1056 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1059 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1061 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1063 /* we found another startcode */
1068 if( i_nal_type == 7 )
1070 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1071 sprintf_hexa( hexa, &p_buffer[5], 3 );
1073 else if( i_nal_type == 8 )
1075 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1081 if( p_64_sps && p_64_pps &&
1082 ( asprintf( &id->psz_fmtp,
1083 "packetization-mode=1;profile-level-id=%s;"
1084 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1085 p_64_pps ) == -1 ) )
1086 id->psz_fmtp = NULL;
1091 id->psz_fmtp = strdup( "packetization-mode=1" );
1094 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1096 char hexa[2*p_fmt->i_extra +1];
1098 id->psz_enc = "MP4V-ES";
1099 id->pf_packetize = rtp_packetize_split;
1100 if( p_fmt->i_extra > 0 )
1102 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1103 if( asprintf( &id->psz_fmtp,
1104 "profile-level-id=3; config=%s;", hexa ) == -1 )
1105 id->psz_fmtp = NULL;
1109 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1113 char hexa[2*p_fmt->i_extra +1];
1115 id->psz_enc = "mpeg4-generic";
1116 id->pf_packetize = rtp_packetize_mp4a;
1117 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1118 if( asprintf( &id->psz_fmtp,
1119 "streamtype=5; profile-level-id=15; "
1120 "mode=AAC-hbr; config=%s; SizeLength=13; "
1121 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1123 id->psz_fmtp = NULL;
1129 unsigned char config[6];
1130 unsigned int aacsrates[15] = {
1131 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1132 16000, 12000, 11025, 8000, 7350, 0, 0 };
1134 for( i = 0; i < 15; i++ )
1135 if( p_fmt->audio.i_rate == aacsrates[i] )
1141 config[3]=p_fmt->audio.i_channels<<4;
1145 id->psz_enc = "MP4A-LATM";
1146 id->pf_packetize = rtp_packetize_mp4a_latm;
1147 sprintf_hexa( hexa, config, 6 );
1148 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1149 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1150 id->psz_fmtp = NULL;
1154 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1155 id->psz_enc = "AMR";
1156 id->psz_fmtp = strdup( "octet-align=1" );
1157 id->pf_packetize = rtp_packetize_amr;
1159 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1160 id->psz_enc = "AMR-WB";
1161 id->psz_fmtp = strdup( "octet-align=1" );
1162 id->pf_packetize = rtp_packetize_amr;
1164 case VLC_FOURCC( 's', 'p', 'x', ' ' ):
1165 id->i_payload_type = p_sys->i_payload_type++;
1166 id->psz_enc = "SPEEX";
1167 id->pf_packetize = rtp_packetize_spx;
1169 case VLC_FOURCC( 't', '1', '4', '0' ):
1170 id->psz_enc = "t140" ;
1171 id->i_clock_rate = 1000;
1172 id->pf_packetize = rtp_packetize_t140;
1176 msg_Err( p_stream, "cannot add this stream (unsupported "
1177 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1182 cscov += 8 /* UDP */ + 12 /* RTP */;
1184 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1186 if( id->i_payload_type == p_sys->i_payload_type )
1187 p_sys->i_payload_type++;
1189 if( p_sys->rtsp != NULL )
1190 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1191 GetDWBE( id->ssrc ),
1192 p_sys->psz_destination,
1193 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1195 id->p_fifo = block_FifoNew();
1196 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1197 VLC_THREAD_PRIORITY_HIGHEST, false ) )
1200 /* Update p_sys context */
1201 vlc_mutex_lock( &p_sys->lock_es );
1202 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1203 vlc_mutex_unlock( &p_sys->lock_es );
1205 psz_sdp = SDPGenerate( p_stream, NULL );
1207 vlc_mutex_lock( &p_sys->lock_sdp );
1208 free( p_sys->psz_sdp );
1209 p_sys->psz_sdp = psz_sdp;
1210 vlc_mutex_unlock( &p_sys->lock_sdp );
1212 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1214 /* Update SDP (sap/file) */
1215 if( p_sys->b_export_sap ) SapSetup( p_stream );
1216 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1221 Del( p_stream, id );
1225 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1227 sout_stream_sys_t *p_sys = p_stream->p_sys;
1229 if( id->p_fifo != NULL )
1231 vlc_object_kill( id );
1232 block_FifoWake( id->p_fifo );
1233 vlc_thread_join( id );
1234 block_FifoRelease( id->p_fifo );
1237 vlc_mutex_lock( &p_sys->lock_es );
1238 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1239 vlc_mutex_unlock( &p_sys->lock_es );
1242 if( id->i_port == var_GetInteger( p_stream, "port-audio" ) )
1243 p_sys->i_port_audio = id->i_port;
1244 if( id->i_port == var_GetInteger( p_stream, "port-video" ) )
1245 p_sys->i_port_video = id->i_port;
1247 free( id->psz_fmtp );
1250 RtspDelId( p_sys->rtsp, id->rtsp_id );
1252 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1253 if( id->listen_fd != NULL )
1254 net_ListenClose( id->listen_fd );
1256 vlc_mutex_destroy( &id->lock_sink );
1258 /* Update SDP (sap/file) */
1259 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1260 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1262 vlc_object_detach( id );
1263 vlc_object_release( id );
1267 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1272 assert( p_stream->p_sys->p_mux == NULL );
1274 while( p_buffer != NULL )
1276 p_next = p_buffer->p_next;
1277 if( id->pf_packetize( p_stream, id, p_buffer ) )
1280 block_Release( p_buffer );
1286 /****************************************************************************
1288 ****************************************************************************/
1289 static int SapSetup( sout_stream_t *p_stream )
1291 sout_stream_sys_t *p_sys = p_stream->p_sys;
1292 sout_instance_t *p_sout = p_stream->p_sout;
1294 /* Remove the previous session */
1295 if( p_sys->p_session != NULL)
1297 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1298 p_sys->p_session = NULL;
1301 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1303 announce_method_t *p_method = sout_SAPMethod();
1304 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
1306 p_sys->psz_destination,
1308 sout_MethodRelease( p_method );
1314 /****************************************************************************
1316 ****************************************************************************/
1317 static int FileSetup( sout_stream_t *p_stream )
1319 sout_stream_sys_t *p_sys = p_stream->p_sys;
1322 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1324 msg_Err( p_stream, "cannot open file '%s' (%m)",
1325 p_sys->psz_sdp_file );
1326 return VLC_EGENERIC;
1329 fputs( p_sys->psz_sdp, f );
1335 /****************************************************************************
1337 ****************************************************************************/
1338 static int HttpCallback( httpd_file_sys_t *p_args,
1339 httpd_file_t *, uint8_t *p_request,
1340 uint8_t **pp_data, int *pi_data );
1342 static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t *url)
1344 sout_stream_sys_t *p_sys = p_stream->p_sys;
1346 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1347 url->i_port > 0 ? url->i_port : 80 );
1348 if( p_sys->p_httpd_host )
1350 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1351 url->psz_path ? url->psz_path : "/",
1354 HttpCallback, (void*)p_sys );
1356 if( p_sys->p_httpd_file == NULL )
1358 return VLC_EGENERIC;
1363 static int HttpCallback( httpd_file_sys_t *p_args,
1364 httpd_file_t *f, uint8_t *p_request,
1365 uint8_t **pp_data, int *pi_data )
1367 VLC_UNUSED(f); VLC_UNUSED(p_request);
1368 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1370 vlc_mutex_lock( &p_sys->lock_sdp );
1371 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1373 *pi_data = strlen( p_sys->psz_sdp );
1374 *pp_data = malloc( *pi_data );
1375 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1382 vlc_mutex_unlock( &p_sys->lock_sdp );
1387 /****************************************************************************
1389 ****************************************************************************/
1390 static void ThreadSend( vlc_object_t *p_this )
1392 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1393 unsigned i_caching = id->i_caching;
1397 block_t *out = block_FifoGet( id->p_fifo );
1399 continue; /* Forced wakeup */
1401 mtime_t i_date = out->i_dts + i_caching;
1402 ssize_t len = out->i_buffer;
1406 vlc_mutex_lock( &id->lock_sink );
1407 unsigned deadc = 0; /* How many dead sockets? */
1408 int deadv[id->sinkc]; /* Dead sockets list */
1410 for( int i = 0; i < id->sinkc; i++ )
1412 SendRTCP( id->sinkv[i].rtcp, out );
1414 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1416 /* Retry sending to root out soft-errors */
1417 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
1420 deadv[deadc++] = id->sinkv[i].rtp_fd;
1422 vlc_mutex_unlock( &id->lock_sink );
1423 block_Release( out );
1425 for( unsigned i = 0; i < deadc; i++ )
1427 msg_Dbg( id, "removing socket %d", deadv[i] );
1428 rtp_del_sink( id, deadv[i] );
1431 /* Hopefully we won't overflow the SO_MAXCONN accept queue */
1432 while( id->listen_fd != NULL )
1434 int fd = net_Accept( id, id->listen_fd, 0 );
1437 msg_Dbg( id, "adding socket %d", fd );
1438 rtp_add_sink( id, fd, true );
1443 int rtp_add_sink( sout_stream_id_t *id, int fd, bool rtcp_mux )
1445 rtp_sink_t sink = { fd, NULL };
1446 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1448 if( sink.rtcp == NULL )
1449 msg_Err( id, "RTCP failed!" );
1451 vlc_mutex_lock( &id->lock_sink );
1452 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1453 vlc_mutex_unlock( &id->lock_sink );
1457 void rtp_del_sink( sout_stream_id_t *id, int fd )
1459 rtp_sink_t sink = { fd, NULL };
1461 /* NOTE: must be safe to use if fd is not included */
1462 vlc_mutex_lock( &id->lock_sink );
1463 for( int i = 0; i < id->sinkc; i++ )
1465 if (id->sinkv[i].rtp_fd == fd)
1467 sink = id->sinkv[i];
1468 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1472 vlc_mutex_unlock( &id->lock_sink );
1474 CloseRTCP( sink.rtcp );
1475 net_Close( sink.rtp_fd );
1478 uint16_t rtp_get_seq( const sout_stream_id_t *id )
1480 /* This will return values for the next packet.
1481 * Accounting for caching would not be totally trivial. */
1482 return id->i_sequence;
1485 /* FIXME: this is pretty bad - if we remove and then insert an ES
1486 * the number will get unsynched from inside RTSP */
1487 unsigned rtp_get_num( const sout_stream_id_t *id )
1489 sout_stream_sys_t *p_sys = id->p_stream->p_sys;
1492 vlc_mutex_lock( &p_sys->lock_es );
1493 for( i = 0; i < p_sys->i_es; i++ )
1495 if( id == p_sys->es[i] )
1498 vlc_mutex_unlock( &p_sys->lock_es );
1504 void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1505 int b_marker, int64_t i_pts )
1507 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / INT64_C(1000000);
1509 out->p_buffer[0] = 0x80;
1510 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1511 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1512 out->p_buffer[3] = ( id->i_sequence )&0xff;
1513 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1514 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1515 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1516 out->p_buffer[7] = ( i_timestamp )&0xff;
1518 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1524 void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1526 block_FifoPut( id->p_fifo, out );
1530 * @return configured max RTP payload size (including payload type-specific
1531 * headers, excluding RTP and transport headers)
1533 size_t rtp_mtu (const sout_stream_id_t *id)
1535 return id->i_mtu - 12;
1538 /*****************************************************************************
1540 *****************************************************************************/
1542 /** Add an ES to a non-RTP muxed stream */
1543 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1545 sout_input_t *p_input;
1546 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1547 assert( p_mux != NULL );
1549 p_input = sout_MuxAddStream( p_mux, p_fmt );
1550 if( p_input == NULL )
1552 msg_Err( p_stream, "cannot add this stream to the muxer" );
1556 return (sout_stream_id_t *)p_input;
1560 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1563 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1564 assert( p_mux != NULL );
1566 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1571 /** Remove an ES from a non-RTP muxed stream */
1572 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1574 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1575 assert( p_mux != NULL );
1577 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1582 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1583 const block_t *p_buffer )
1585 sout_stream_sys_t *p_sys = p_stream->p_sys;
1586 sout_stream_id_t *id = p_sys->es[0];
1588 int64_t i_dts = p_buffer->i_dts;
1590 uint8_t *p_data = p_buffer->p_buffer;
1591 unsigned int i_data = p_buffer->i_buffer;
1592 unsigned int i_max = id->i_mtu - 12;
1594 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1598 unsigned int i_size;
1600 /* output complete packet */
1601 if( p_sys->packet &&
1602 p_sys->packet->i_buffer + i_data > i_max )
1604 rtp_packetize_send( id, p_sys->packet );
1605 p_sys->packet = NULL;
1608 if( p_sys->packet == NULL )
1610 /* allocate a new packet */
1611 p_sys->packet = block_New( p_stream, id->i_mtu );
1612 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1613 p_sys->packet->i_dts = i_dts;
1614 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1615 i_dts += p_sys->packet->i_length;
1618 i_size = __MIN( i_data,
1619 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1621 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1624 p_sys->packet->i_buffer += i_size;
1633 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
1636 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
1642 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
1644 p_next = p_buffer->p_next;
1645 block_Release( p_buffer );
1653 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
1655 sout_access_out_t *p_grab;
1657 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
1658 if( p_grab == NULL )
1661 p_grab->p_module = NULL;
1662 p_grab->p_sout = p_stream->p_sout;
1663 p_grab->psz_access = strdup( "grab" );
1664 p_grab->p_cfg = NULL;
1665 p_grab->psz_path = strdup( "" );
1666 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
1667 p_grab->pf_seek = NULL;
1668 p_grab->pf_write = AccessOutGrabberWrite;
1669 vlc_object_attach( p_grab, p_stream );