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 *****************************************************************************/
31 #include <vlc_block.h>
33 #include <vlc_httpd.h>
35 #include <vlc_network.h>
36 #include <vlc_charset.h>
37 #include <vlc_strings.h>
47 /*****************************************************************************
49 *****************************************************************************/
51 #define DST_TEXT N_("Destination")
52 #define DST_LONGTEXT N_( \
53 "This is the output URL that will be used." )
54 #define SDP_TEXT N_("SDP")
55 #define SDP_LONGTEXT N_( \
56 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
57 "session will be made available. You must use an url: http://location to " \
58 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
59 "for the SDP to be announced via SAP." )
60 #define MUX_TEXT N_("Muxer")
61 #define MUX_LONGTEXT N_( \
62 "This allows you to specify the muxer used for the streaming output. " \
63 "Default is to use no muxer (standard RTP stream)." )
65 #define NAME_TEXT N_("Session name")
66 #define NAME_LONGTEXT N_( \
67 "This is the name of the session that will be announced in the SDP " \
68 "(Session Descriptor)." )
69 #define DESC_TEXT N_("Session description")
70 #define DESC_LONGTEXT N_( \
71 "This allows you to give a broader description of the stream, that will " \
72 "be announced in the SDP (Session Descriptor)." )
73 #define URL_TEXT N_("Session URL")
74 #define URL_LONGTEXT N_( \
75 "This allows you to give an URL with more details about the stream " \
76 "(often the website of the streaming organization), that will " \
77 "be announced in the SDP (Session Descriptor)." )
78 #define EMAIL_TEXT N_("Session email")
79 #define EMAIL_LONGTEXT N_( \
80 "This allows you to give a contact mail address for the stream, that will " \
81 "be announced in the SDP (Session Descriptor)." )
82 #define PORT_TEXT N_("Port")
83 #define PORT_LONGTEXT N_( \
84 "This allows you to specify the base port for the RTP streaming." )
85 #define PORT_AUDIO_TEXT N_("Audio port")
86 #define PORT_AUDIO_LONGTEXT N_( \
87 "This allows you to specify the default audio port for the RTP streaming." )
88 #define PORT_VIDEO_TEXT N_("Video port")
89 #define PORT_VIDEO_LONGTEXT N_( \
90 "This allows you to specify the default video port for the RTP streaming." )
92 #define TTL_TEXT N_("Hop limit (TTL)")
93 #define TTL_LONGTEXT N_( \
94 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
95 "the multicast packets sent by the stream output (0 = use operating " \
96 "system built-in default).")
98 #define RFC3016_TEXT N_("MP4A LATM")
99 #define RFC3016_LONGTEXT N_( \
100 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
102 static int Open ( vlc_object_t * );
103 static void Close( vlc_object_t * );
105 #define SOUT_CFG_PREFIX "sout-rtp-"
106 #define MAX_EMPTY_BLOCKS 200
109 set_shortname( _("RTP"));
110 set_description( _("RTP stream output") );
111 set_capability( "sout stream", 0 );
112 add_shortcut( "rtp" );
113 set_category( CAT_SOUT );
114 set_subcategory( SUBCAT_SOUT_STREAM );
116 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DST_TEXT,
117 DST_LONGTEXT, VLC_TRUE );
118 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
119 SDP_LONGTEXT, VLC_TRUE );
120 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
121 MUX_LONGTEXT, VLC_TRUE );
123 add_string( SOUT_CFG_PREFIX "name", "NONE", NULL, NAME_TEXT,
124 NAME_LONGTEXT, VLC_TRUE );
125 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
126 DESC_LONGTEXT, VLC_TRUE );
127 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
128 URL_LONGTEXT, VLC_TRUE );
129 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
130 EMAIL_LONGTEXT, VLC_TRUE );
132 add_integer( SOUT_CFG_PREFIX "port", 1234, NULL, PORT_TEXT,
133 PORT_LONGTEXT, VLC_TRUE );
134 add_integer( SOUT_CFG_PREFIX "port-audio", 1230, NULL, PORT_AUDIO_TEXT,
135 PORT_AUDIO_LONGTEXT, VLC_TRUE );
136 add_integer( SOUT_CFG_PREFIX "port-video", 1232, NULL, PORT_VIDEO_TEXT,
137 PORT_VIDEO_LONGTEXT, VLC_TRUE );
139 add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
140 TTL_LONGTEXT, VLC_TRUE );
142 add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
143 RFC3016_LONGTEXT, VLC_FALSE );
145 set_callbacks( Open, Close );
148 /*****************************************************************************
149 * Exported prototypes
150 *****************************************************************************/
151 static const char *ppsz_sout_options[] = {
152 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
153 "description", "url","email", "mp4a-latm", NULL
156 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
157 static int Del ( sout_stream_t *, sout_stream_id_t * );
158 static int Send( sout_stream_t *, sout_stream_id_t *,
160 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
161 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
162 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
165 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
166 static void ThreadSend( vlc_object_t *p_this );
168 static void SDPHandleUrl( sout_stream_t *, char * );
170 static int SapSetup( sout_stream_t *p_stream );
171 static int FileSetup( sout_stream_t *p_stream );
172 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t * );
174 struct sout_stream_sys_t
180 vlc_mutex_t lock_sdp;
182 char *psz_session_name;
183 char *psz_session_description;
184 char *psz_session_url;
185 char *psz_session_email;
188 vlc_bool_t b_export_sdp_file;
191 vlc_bool_t b_export_sap;
192 session_descriptor_t *p_session;
194 httpd_host_t *p_httpd_host;
195 httpd_file_t *p_httpd_file;
200 char *psz_destination;
207 /* when need to use a private one or when using muxer */
210 /* in case we do TS/PS over rtp */
212 sout_access_out_t *p_grab;
218 sout_stream_id_t **es;
221 typedef int (*pf_rtp_packetizer_t)( sout_stream_t *, sout_stream_id_t *,
224 struct sout_stream_id_t
228 sout_stream_t *p_stream;
230 uint32_t i_timestamp_start;
232 uint8_t i_payload_type;
243 /* Packetizer specific fields */
244 pf_rtp_packetizer_t pf_packetize;
248 vlc_mutex_t lock_sink;
251 rtsp_stream_id_t *rtsp_id;
253 block_fifo_t *p_fifo;
258 /*****************************************************************************
260 *****************************************************************************/
261 static int Open( vlc_object_t *p_this )
263 sout_stream_t *p_stream = (sout_stream_t*)p_this;
264 sout_instance_t *p_sout = p_stream->p_sout;
265 sout_stream_sys_t *p_sys = NULL;
266 config_chain_t *p_cfg = NULL;
268 vlc_bool_t b_rtsp = VLC_FALSE;
270 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
271 ppsz_sout_options, p_stream->p_cfg );
273 p_sys = malloc( sizeof( sout_stream_sys_t ) );
277 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
278 p_sys->psz_session_name = var_GetString( p_stream, SOUT_CFG_PREFIX "name" );
279 p_sys->psz_session_description = var_GetString( p_stream, SOUT_CFG_PREFIX "description" );
280 p_sys->psz_session_url = var_GetString( p_stream, SOUT_CFG_PREFIX "url" );
281 p_sys->psz_session_email = var_GetString( p_stream, SOUT_CFG_PREFIX "email" );
283 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
284 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
285 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
287 p_sys->psz_sdp_file = NULL;
289 if( p_sys->i_port_audio == p_sys->i_port_video )
291 msg_Err( p_stream, "audio and video port cannot be the same" );
292 p_sys->i_port_audio = 0;
293 p_sys->i_port_video = 0;
296 if( !p_sys->psz_session_name )
298 if( p_sys->psz_destination )
299 p_sys->psz_session_name = strdup( p_sys->psz_destination );
301 p_sys->psz_session_name = strdup( "NONE" );
304 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
306 if( !strcmp( p_cfg->psz_name, "sdp" ) )
308 if( p_cfg->psz_value && !strncasecmp( p_cfg->psz_value, "rtsp", 4 ) )
317 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
320 if( !strncasecmp( psz, "rtsp", 4 ) )
326 if( p_sys->psz_destination == NULL )
330 msg_Err( p_stream, "missing destination and not in RTSP mode" );
335 else if( p_sys->i_port <= 0 )
337 msg_Err( p_stream, "invalid port" );
342 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
343 if( p_sys->i_ttl == 0 )
345 /* Normally, we should let the default hop limit up to the core,
346 * but we have to know it to build our SDP properly, which is why
347 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
349 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
351 if( p_sys->i_ttl > 255 )
353 /* must not exceed 999 once formatted */
355 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
357 p_sys->i_payload_type = 96;
361 p_sys->psz_sdp = NULL;
363 p_sys->i_sdp_id = mdate();
364 p_sys->i_sdp_version = 1;
365 p_sys->psz_sdp = NULL;
367 p_sys->b_export_sap = VLC_FALSE;
368 p_sys->b_export_sdp_file = VLC_FALSE;
369 p_sys->p_session = NULL;
371 p_sys->p_httpd_host = NULL;
372 p_sys->p_httpd_file = NULL;
374 p_stream->p_sys = p_sys;
376 vlc_mutex_init( p_stream, &p_sys->lock_sdp );
377 vlc_mutex_init( p_stream, &p_sys->lock_es );
379 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
382 sout_stream_id_t *id;
383 const char *psz_rtpmap;
386 /* Check muxer type */
387 if( !strncasecmp( psz, "ps", 2 )
388 || !strncasecmp( psz, "mpeg1", 5 ) )
390 psz_rtpmap = "MP2P/90000";
392 else if( !strncasecmp( psz, "ts", 2 ) )
394 psz_rtpmap = "MP2T/90000";
399 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
401 vlc_mutex_destroy( &p_sys->lock_sdp );
402 vlc_mutex_destroy( &p_sys->lock_es );
407 p_sys->p_grab = GrabberCreate( p_stream );
408 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
411 if( p_sys->p_mux == NULL )
413 msg_Err( p_stream, "cannot create muxer" );
414 sout_AccessOutDelete( p_sys->p_grab );
415 vlc_mutex_destroy( &p_sys->lock_sdp );
416 vlc_mutex_destroy( &p_sys->lock_es );
421 id = Add( p_stream, NULL );
424 sout_MuxDelete( p_sys->p_mux );
425 sout_AccessOutDelete( p_sys->p_grab );
426 vlc_mutex_destroy( &p_sys->lock_sdp );
427 vlc_mutex_destroy( &p_sys->lock_es );
432 id->psz_rtpmap = strdup( psz_rtpmap );
433 id->i_payload_type = i_payload_type;
435 p_sys->packet = NULL;
437 p_stream->pf_add = MuxAdd;
438 p_stream->pf_del = MuxDel;
439 p_stream->pf_send = MuxSend;
444 p_sys->p_grab = NULL;
446 p_stream->pf_add = Add;
447 p_stream->pf_del = Del;
448 p_stream->pf_send = Send;
451 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
454 config_chain_t *p_cfg;
456 SDPHandleUrl( p_stream, psz );
458 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
460 if( !strcmp( p_cfg->psz_name, "sdp" ) )
462 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
465 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
466 if( !strcmp( p_cfg->psz_value, psz ) )
469 SDPHandleUrl( p_stream, p_cfg->psz_value );
475 /* update p_sout->i_out_pace_nocontrol */
476 p_stream->p_sout->i_out_pace_nocontrol++;
481 /*****************************************************************************
483 *****************************************************************************/
484 static void Close( vlc_object_t * p_this )
486 sout_stream_t *p_stream = (sout_stream_t*)p_this;
487 sout_stream_sys_t *p_sys = p_stream->p_sys;
489 /* update p_sout->i_out_pace_nocontrol */
490 p_stream->p_sout->i_out_pace_nocontrol--;
494 assert( p_sys->i_es == 1 );
495 Del( p_stream, p_sys->es[0] );
497 sout_MuxDelete( p_sys->p_mux );
498 sout_AccessOutDelete( p_sys->p_grab );
501 block_Release( p_sys->packet );
503 if( p_sys->b_export_sap )
506 SapSetup( p_stream );
510 if( p_sys->rtsp != NULL )
511 RtspUnsetup( p_sys->rtsp );
513 vlc_mutex_destroy( &p_sys->lock_sdp );
514 vlc_mutex_destroy( &p_sys->lock_es );
516 if( p_sys->p_httpd_file )
517 httpd_FileDelete( p_sys->p_httpd_file );
519 if( p_sys->p_httpd_host )
520 httpd_HostDelete( p_sys->p_httpd_host );
522 free( p_sys->psz_session_name );
523 free( p_sys->psz_session_description );
524 free( p_sys->psz_session_url );
525 free( p_sys->psz_session_email );
526 free( p_sys->psz_sdp );
528 if( p_sys->b_export_sdp_file )
531 unlink( p_sys->psz_sdp_file );
533 free( p_sys->psz_sdp_file );
535 free( p_sys->psz_destination );
539 /*****************************************************************************
541 *****************************************************************************/
542 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
544 sout_stream_sys_t *p_sys = p_stream->p_sys;
547 vlc_UrlParse( &url, psz_url, 0 );
548 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
550 if( p_sys->p_httpd_file )
552 msg_Err( p_stream, "you can use sdp=http:// only once" );
556 if( HttpSetup( p_stream, &url ) )
558 msg_Err( p_stream, "cannot export SDP as HTTP" );
561 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
563 if( p_sys->rtsp != NULL )
565 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
569 /* FIXME test if destination is multicast or no destination at all */
570 p_sys->rtsp = RtspSetup( p_stream, &url );
571 if( p_sys->rtsp == NULL )
573 msg_Err( p_stream, "cannot export SDP as RTSP" );
576 if( p_sys->p_mux != NULL )
578 sout_stream_id_t *id = p_sys->es[0];
579 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0,
580 p_sys->psz_destination, p_sys->i_ttl,
581 id->i_port, id->i_port + 1 );
584 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
585 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
587 p_sys->b_export_sap = VLC_TRUE;
588 SapSetup( p_stream );
590 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
592 if( p_sys->b_export_sdp_file )
594 msg_Err( p_stream, "you can use sdp=file:// only once" );
597 p_sys->b_export_sdp_file = VLC_TRUE;
598 psz_url = &psz_url[5];
599 if( psz_url[0] == '/' && psz_url[1] == '/' )
601 p_sys->psz_sdp_file = strdup( psz_url );
605 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
610 vlc_UrlClean( &url );
613 /*****************************************************************************
615 *****************************************************************************/
616 /* FIXME http://www.faqs.org/rfcs/rfc2327.html
617 All text fields should be UTF-8 encoded. Use global a:charset to announce this.
618 o= - should be local username (no spaces allowed)
619 o= time should be hashed with some other value to garantue uniqueness
620 o= we need IP6 support?
621 o= don't use the localhost address. use fully qualified domain name or IP4 address
622 p= international phone number (pass via vars?)
624 a= recvonly (missing)
625 a= type:broadcast (missing)
626 a= charset: (normally charset should be UTF-8, this can be used to override s= and i=)
627 a= x-plgroup: (missing)
628 RTP packets need to get the correct src IP address */
630 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
632 const sout_stream_sys_t *p_sys = p_stream->p_sys;
634 const char *psz_destination = p_sys->psz_destination;
635 char *psz_sdp, *p, ipv;
638 * When we have a fixed destination (typically when we do multicast),
639 * we need to put the actual port numbers in the SDP.
640 * When there is no fixed destination, we only support RTSP unicast
641 * on-demand setup, so we should rather let the clients decide which ports
643 * When there is both a fixed destination and RTSP unicast, we need to
644 * put port numbers used by the fixed destination, otherwise the SDP would
645 * become totally incorrect for multicast use. It should be noted that
646 * port numbers from SDP with RTSP are only "recommendation" from the
647 * server to the clients (per RFC2326), so only broken clients will fail
648 * to handle this properly. There is no solution but to use two differents
649 * output chain with two different RTSP URLs if you need to handle this
652 int inclport = (psz_destination != NULL);
654 /* FIXME: breaks IP version check on unknown destination */
655 if( psz_destination == NULL )
656 psz_destination = "0.0.0.0";
658 i_size = sizeof( "v=0\r\n" ) +
659 sizeof( "o=- * * IN IP4 127.0.0.1\r\n" ) + 10 + 10 +
660 sizeof( "s=*\r\n" ) + strlen( p_sys->psz_session_name ) +
661 sizeof( "i=*\r\n" ) + strlen( p_sys->psz_session_description ) +
662 sizeof( "u=*\r\n" ) + strlen( p_sys->psz_session_url ) +
663 sizeof( "e=*\r\n" ) + strlen( p_sys->psz_session_email ) +
664 sizeof( "t=0 0\r\n" ) +
665 sizeof( "b=RR:0\r\n" ) +
666 sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
667 sizeof( "a=recvonly\r\n" ) +
668 sizeof( "a=type:broadcast\r\n" ) +
669 sizeof( "c=IN IP4 */*\r\n" ) + 20 + 10 +
670 strlen( psz_destination ) ;
671 for( i = 0; i < p_sys->i_es; i++ )
673 sout_stream_id_t *id = p_sys->es[i];
675 i_size += strlen( "m=**d*o * RTP/AVP *\r\n" ) + 10 + 10;
678 i_size += strlen( "b=AS: *\r\n") + 10;
682 i_size += strlen( "a=rtpmap:* *\r\n" ) + strlen( id->psz_rtpmap )+10;
686 i_size += strlen( "a=fmtp:* *\r\n" ) + strlen( id->psz_fmtp ) + 10;
688 if( rtsp_url != NULL )
690 i_size += strlen( "a=control:*/trackID=*\r\n" ) + strlen( rtsp_url ) + 10;
694 ipv = ( strchr( psz_destination, ':' ) != NULL ) ? '6' : '4';
696 p = psz_sdp = malloc( i_size );
697 p += sprintf( p, "v=0\r\n" );
698 p += sprintf( p, "o=- "I64Fu" %d IN IP%c %s\r\n",
699 p_sys->i_sdp_id, p_sys->i_sdp_version,
700 ipv, ipv == '6' ? "::1" : "127.0.0.1" );
701 if( *p_sys->psz_session_name )
702 p += sprintf( p, "s=%s\r\n", p_sys->psz_session_name );
703 if( *p_sys->psz_session_description )
704 p += sprintf( p, "i=%s\r\n", p_sys->psz_session_description );
705 if( *p_sys->psz_session_url )
706 p += sprintf( p, "u=%s\r\n", p_sys->psz_session_url );
707 if( *p_sys->psz_session_email )
708 p += sprintf( p, "e=%s\r\n", p_sys->psz_session_email );
710 p += sprintf( p, "t=0 0\r\n" ); /* permanent stream */
711 /* when scheduled from vlm, we should set this info correctly */
712 p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
713 p += sprintf( p, "a=recvonly\r\n" );
714 p += sprintf( p, "a=type:broadcast\r\n" );
716 p += sprintf( p, "c=IN IP%c %s", ipv, psz_destination );
719 && net_AddressIsMulticast( (vlc_object_t *)p_stream, psz_destination ) )
721 /* Add the deprecated TTL field if it is an IPv4 multicast address */
722 p += sprintf( p, "/%d", p_sys->i_ttl ?: 1 );
724 p += sprintf( p, "\r\n" );
725 p += sprintf( p, "b=RR:0\r\n" );
727 for( i = 0; i < p_sys->i_es; i++ )
729 sout_stream_id_t *id = p_sys->es[i];
730 const char *mime_major; /* major MIME type */
732 if( id->i_cat == AUDIO_ES )
733 mime_major = "audio";
735 if( id->i_cat == VIDEO_ES )
736 mime_major = "video";
740 p += sprintf( p, "m=%s %d RTP/AVP %d\r\n", mime_major,
741 inclport * id->i_port, id->i_payload_type );
745 p += sprintf(p,"b=AS:%d\r\n",id->i_bitrate);
749 p += sprintf( p, "a=rtpmap:%d %s\r\n", id->i_payload_type,
754 p += sprintf( p, "a=fmtp:%d %s\r\n", id->i_payload_type,
757 if( rtsp_url != NULL )
759 p += sprintf( p, "a=control:/trackID=%d\r\n", i );
766 /*****************************************************************************
768 *****************************************************************************/
769 static int rtp_packetize_l16 ( sout_stream_t *, sout_stream_id_t *, block_t * );
770 static int rtp_packetize_l8 ( sout_stream_t *, sout_stream_id_t *, block_t * );
771 static int rtp_packetize_mpa ( sout_stream_t *, sout_stream_id_t *, block_t * );
772 static int rtp_packetize_mpv ( sout_stream_t *, sout_stream_id_t *, block_t * );
773 static int rtp_packetize_ac3 ( sout_stream_t *, sout_stream_id_t *, block_t * );
774 static int rtp_packetize_split( sout_stream_t *, sout_stream_id_t *, block_t * );
775 static int rtp_packetize_mp4a ( sout_stream_t *, sout_stream_id_t *, block_t * );
776 static int rtp_packetize_mp4a_latm ( sout_stream_t *, sout_stream_id_t *, block_t * );
777 static int rtp_packetize_h263 ( sout_stream_t *, sout_stream_id_t *, block_t * );
778 static int rtp_packetize_h264 ( sout_stream_t *, sout_stream_id_t *, block_t * );
779 static int rtp_packetize_amr ( sout_stream_t *, sout_stream_id_t *, block_t * );
781 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
783 static const char hex[16] = "0123456789abcdef";
786 for( i = 0; i < i_data; i++ )
788 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
789 s[2*i+1] = hex[(p_data[i] )&0xf];
795 /** Add an ES as a new RTP stream */
796 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
798 /* NOTE: As a special case, if we use a non-RTP
799 * mux (TS/PS), then p_fmt is NULL. */
800 sout_stream_sys_t *p_sys = p_stream->p_sys;
801 sout_stream_id_t *id;
805 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
809 /* Choose the port */
814 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
816 i_port = p_sys->i_port_audio;
817 p_sys->i_port_audio = 0;
820 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
822 i_port = p_sys->i_port_video;
823 p_sys->i_port_video = 0;
828 if( p_sys->i_port != p_sys->i_port_audio
829 && p_sys->i_port != p_sys->i_port_video )
831 i_port = p_sys->i_port;
838 id->p_stream = p_stream;
840 id->i_timestamp_start = rand()&0xffffffff;
841 id->i_sequence = rand()&0xffff;
842 id->i_payload_type = p_sys->i_payload_type;
843 id->ssrc[0] = rand()&0xff;
844 id->ssrc[1] = rand()&0xff;
845 id->ssrc[2] = rand()&0xff;
846 id->ssrc[3] = rand()&0xff;
848 id->psz_rtpmap = NULL;
850 id->i_clock_rate = 90000; /* most common case */
854 id->i_cat = p_fmt->i_cat;
855 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
859 id->i_cat = VIDEO_ES;
863 id->pf_packetize = NULL;
864 id->i_mtu = config_GetInt( p_stream, "mtu" );
865 if( id->i_mtu <= 12 + 16 )
866 id->i_mtu = 576 - 20 - 8; /* pessimistic */
868 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
870 vlc_mutex_init( p_stream, &id->lock_sink );
876 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
877 id->p_fifo = block_FifoNew( p_stream );
879 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
880 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
882 vlc_mutex_destroy( &id->lock_sink );
883 vlc_object_destroy( id );
887 if( p_sys->psz_destination != NULL )
889 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
890 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
891 i_port, ttl, IPPROTO_UDP );
895 msg_Err( p_stream, "cannot create RTP socket" );
896 vlc_thread_join( id );
897 vlc_mutex_destroy( &id->lock_sink );
898 vlc_object_destroy( id );
901 rtp_add_sink( id, fd );
907 switch( p_fmt->i_codec )
909 case VLC_FOURCC( 's', '1', '6', 'b' ):
910 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
912 id->i_payload_type = 11;
914 else if( p_fmt->audio.i_channels == 2 &&
915 p_fmt->audio.i_rate == 44100 )
917 id->i_payload_type = 10;
919 if( asprintf( &id->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
920 p_fmt->audio.i_channels ) == -1 )
921 id->psz_rtpmap = NULL;
922 id->i_clock_rate = p_fmt->audio.i_rate;
923 id->pf_packetize = rtp_packetize_l16;
925 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
926 if( asprintf( &id->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
927 p_fmt->audio.i_channels ) == -1 )
928 id->psz_rtpmap = NULL;
929 id->i_clock_rate = p_fmt->audio.i_rate;
930 id->pf_packetize = rtp_packetize_l8;
932 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
933 id->i_payload_type = 14;
934 id->psz_rtpmap = strdup( "MPA/90000" );
935 id->pf_packetize = rtp_packetize_mpa;
937 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
938 id->i_payload_type = 32;
939 id->psz_rtpmap = strdup( "MPV/90000" );
940 id->pf_packetize = rtp_packetize_mpv;
942 case VLC_FOURCC( 'a', '5', '2', ' ' ):
943 id->psz_rtpmap = strdup( "ac3/90000" );
944 id->pf_packetize = rtp_packetize_ac3;
946 case VLC_FOURCC( 'H', '2', '6', '3' ):
947 id->psz_rtpmap = strdup( "H263-1998/90000" );
948 id->pf_packetize = rtp_packetize_h263;
950 case VLC_FOURCC( 'h', '2', '6', '4' ):
951 id->psz_rtpmap = strdup( "H264/90000" );
952 id->pf_packetize = rtp_packetize_h264;
955 if( p_fmt->i_extra > 0 )
957 uint8_t *p_buffer = p_fmt->p_extra;
958 int i_buffer = p_fmt->i_extra;
959 char *p_64_sps = NULL;
960 char *p_64_pps = NULL;
963 while( i_buffer > 4 &&
964 p_buffer[0] == 0 && p_buffer[1] == 0 &&
965 p_buffer[2] == 0 && p_buffer[3] == 1 )
967 const int i_nal_type = p_buffer[4]&0x1f;
971 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
974 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
976 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
978 /* we found another startcode */
983 if( i_nal_type == 7 )
985 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
986 sprintf_hexa( hexa, &p_buffer[5], 3 );
988 else if( i_nal_type == 8 )
990 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
996 if( p_64_sps && p_64_pps &&
997 ( asprintf( &id->psz_fmtp,
998 "packetization-mode=1;profile-level-id=%s;"
999 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1000 p_64_pps ) == -1 ) )
1001 id->psz_fmtp = NULL;
1006 id->psz_fmtp = strdup( "packetization-mode=1" );
1009 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1011 char hexa[2*p_fmt->i_extra +1];
1013 id->psz_rtpmap = strdup( "MP4V-ES/90000" );
1014 id->pf_packetize = rtp_packetize_split;
1015 if( p_fmt->i_extra > 0 )
1017 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1018 if( asprintf( &id->psz_fmtp,
1019 "profile-level-id=3; config=%s;", hexa ) == -1 )
1020 id->psz_fmtp = NULL;
1024 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1026 id->i_clock_rate = p_fmt->audio.i_rate;
1030 char hexa[2*p_fmt->i_extra +1];
1032 if( asprintf( &id->psz_rtpmap, "mpeg4-generic/%d",
1033 p_fmt->audio.i_rate ) == -1 )
1034 id->psz_rtpmap = NULL;
1035 id->pf_packetize = rtp_packetize_mp4a;
1036 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1037 if( asprintf( &id->psz_fmtp,
1038 "streamtype=5; profile-level-id=15; "
1039 "mode=AAC-hbr; config=%s; SizeLength=13; "
1040 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1042 id->psz_fmtp = NULL;
1048 unsigned char config[6];
1049 unsigned int aacsrates[15] = {
1050 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1051 16000, 12000, 11025, 8000, 7350, 0, 0 };
1053 for( i = 0; i < 15; i++ )
1054 if( p_fmt->audio.i_rate == aacsrates[i] )
1060 config[3]=p_fmt->audio.i_channels<<4;
1064 if( asprintf( &id->psz_rtpmap, "MP4A-LATM/%d/%d",
1065 p_fmt->audio.i_rate,
1066 p_fmt->audio.i_channels ) == -1)
1067 id->psz_rtpmap = NULL;
1068 id->pf_packetize = rtp_packetize_mp4a_latm;
1069 sprintf_hexa( hexa, config, 6 );
1070 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1071 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1072 id->psz_fmtp = NULL;
1076 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1077 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1078 "AMR/8000/2" : "AMR/8000" );
1079 id->psz_fmtp = strdup( "octet-align=1" );
1080 id->i_clock_rate = p_fmt->audio.i_rate;
1081 id->pf_packetize = rtp_packetize_amr;
1083 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1084 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1085 "AMR-WB/16000/2" : "AMR-WB/16000" );
1086 id->psz_fmtp = strdup( "octet-align=1" );
1087 id->i_clock_rate = p_fmt->audio.i_rate;
1088 id->pf_packetize = rtp_packetize_amr;
1092 msg_Err( p_stream, "cannot add this stream (unsupported "
1093 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1095 rtp_del_sink( id, id->fdv[0] );
1096 vlc_thread_join( id );
1097 vlc_mutex_destroy( &id->lock_sink );
1098 vlc_object_destroy( id );
1102 if( id->i_payload_type == p_sys->i_payload_type )
1103 p_sys->i_payload_type++;
1105 if( p_sys->rtsp != NULL )
1106 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1107 p_sys->psz_destination,
1108 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1110 /* Update p_sys context */
1111 vlc_mutex_lock( &p_sys->lock_es );
1112 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1113 vlc_mutex_unlock( &p_sys->lock_es );
1115 psz_sdp = SDPGenerate( p_stream, NULL );
1117 vlc_mutex_lock( &p_sys->lock_sdp );
1118 free( p_sys->psz_sdp );
1119 p_sys->psz_sdp = psz_sdp;
1120 vlc_mutex_unlock( &p_sys->lock_sdp );
1122 p_sys->i_sdp_version++;
1124 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1126 /* Update SDP (sap/file) */
1127 if( p_sys->b_export_sap ) SapSetup( p_stream );
1128 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1130 vlc_object_attach( id, p_stream );
1134 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1136 sout_stream_sys_t *p_sys = p_stream->p_sys;
1138 vlc_object_kill( id );
1140 vlc_mutex_lock( &p_sys->lock_es );
1141 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1142 vlc_mutex_unlock( &p_sys->lock_es );
1145 if( id->i_port > 0 )
1147 if( id->i_cat == AUDIO_ES && p_sys->i_port_audio == 0 )
1148 p_sys->i_port_audio = id->i_port;
1149 else if( id->i_cat == VIDEO_ES && p_sys->i_port_video == 0 )
1150 p_sys->i_port_video = id->i_port;
1153 free( id->psz_rtpmap );
1154 free( id->psz_fmtp );
1157 RtspDelId( p_sys->rtsp, id->rtsp_id );
1159 rtp_del_sink( id, id->fdv[0] ); /* sink for explicit dst= */
1161 vlc_thread_join( id );
1162 vlc_mutex_destroy( &id->lock_sink );
1163 block_FifoRelease( id->p_fifo );
1165 /* Update SDP (sap/file) */
1166 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1167 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1169 vlc_object_detach( id );
1170 vlc_object_destroy( id );
1174 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1179 assert( p_stream->p_sys->p_mux == NULL );
1181 while( p_buffer != NULL )
1183 p_next = p_buffer->p_next;
1184 if( id->pf_packetize( p_stream, id, p_buffer ) )
1187 block_Release( p_buffer );
1193 /****************************************************************************
1195 ****************************************************************************/
1196 static int SapSetup( sout_stream_t *p_stream )
1198 sout_stream_sys_t *p_sys = p_stream->p_sys;
1199 sout_instance_t *p_sout = p_stream->p_sout;
1200 announce_method_t *p_method = sout_SAPMethod();
1202 /* Remove the previous session */
1203 if( p_sys->p_session != NULL)
1205 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1206 sout_AnnounceSessionDestroy( p_sys->p_session );
1207 p_sys->p_session = NULL;
1210 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1212 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout, SOUT_CFG_PREFIX,
1214 p_sys->psz_destination,
1218 sout_MethodRelease( p_method );
1222 /****************************************************************************
1224 ****************************************************************************/
1225 static int FileSetup( sout_stream_t *p_stream )
1227 sout_stream_sys_t *p_sys = p_stream->p_sys;
1230 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1232 msg_Err( p_stream, "cannot open file '%s' (%s)",
1233 p_sys->psz_sdp_file, strerror(errno) );
1234 return VLC_EGENERIC;
1237 fputs( p_sys->psz_sdp, f );
1243 /****************************************************************************
1245 ****************************************************************************/
1246 static int HttpCallback( httpd_file_sys_t *p_args,
1247 httpd_file_t *, uint8_t *p_request,
1248 uint8_t **pp_data, int *pi_data );
1250 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t *url)
1252 sout_stream_sys_t *p_sys = p_stream->p_sys;
1254 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1255 url->i_port > 0 ? url->i_port : 80 );
1256 if( p_sys->p_httpd_host )
1258 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1259 url->psz_path ? url->psz_path : "/",
1262 HttpCallback, (void*)p_sys );
1264 if( p_sys->p_httpd_file == NULL )
1266 return VLC_EGENERIC;
1271 static int HttpCallback( httpd_file_sys_t *p_args,
1272 httpd_file_t *f, uint8_t *p_request,
1273 uint8_t **pp_data, int *pi_data )
1275 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1277 vlc_mutex_lock( &p_sys->lock_sdp );
1278 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1280 *pi_data = strlen( p_sys->psz_sdp );
1281 *pp_data = malloc( *pi_data );
1282 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1289 vlc_mutex_unlock( &p_sys->lock_sdp );
1294 /****************************************************************************
1296 ****************************************************************************/
1297 static void ThreadSend( vlc_object_t *p_this )
1299 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1300 unsigned i_caching = id->i_caching;
1304 block_t *out = block_FifoGet( id->p_fifo );
1305 mtime_t i_date = out->i_dts + i_caching;
1309 vlc_mutex_lock( &id->lock_sink );
1310 for( int i = 0; i < id->fdc; i++ )
1311 send( id->fdv[i], out->p_buffer, out->i_buffer, 0 );
1312 vlc_mutex_unlock( &id->lock_sink );
1314 block_Release( out );
1318 static inline void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1320 block_FifoPut( id->p_fifo, out );
1323 int rtp_add_sink( sout_stream_id_t *id, int fd )
1325 vlc_mutex_lock( &id->lock_sink );
1326 TAB_APPEND( id->fdc, id->fdv, fd );
1327 vlc_mutex_unlock( &id->lock_sink );
1331 void rtp_del_sink( sout_stream_id_t *id, int fd )
1333 /* NOTE: must be safe to use if fd is not included */
1334 vlc_mutex_lock( &id->lock_sink );
1335 TAB_REMOVE( id->fdc, id->fdv, fd );
1336 vlc_mutex_unlock( &id->lock_sink );
1340 /****************************************************************************
1342 ****************************************************************************/
1343 static void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1344 int b_marker, int64_t i_pts )
1346 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / I64C(1000000);
1348 out->p_buffer[0] = 0x80;
1349 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1350 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1351 out->p_buffer[3] = ( id->i_sequence )&0xff;
1352 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1353 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1354 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1355 out->p_buffer[7] = ( i_timestamp )&0xff;
1357 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1363 static int rtp_packetize_mpa( sout_stream_t *p_stream, sout_stream_id_t *id,
1366 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1367 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1369 uint8_t *p_data = in->p_buffer;
1370 int i_data = in->i_buffer;
1373 for( i = 0; i < i_count; i++ )
1375 int i_payload = __MIN( i_max, i_data );
1376 block_t *out = block_New( p_stream, 16 + i_payload );
1378 /* rtp common header */
1379 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1381 out->p_buffer[12] = 0;
1382 out->p_buffer[13] = 0;
1383 /* fragment offset in the current frame */
1384 out->p_buffer[14] = ( (i*i_max) >> 8 )&0xff;
1385 out->p_buffer[15] = ( (i*i_max) )&0xff;
1386 memcpy( &out->p_buffer[16], p_data, i_payload );
1388 out->i_buffer = 16 + i_payload;
1389 out->i_dts = in->i_dts + i * in->i_length / i_count;
1390 out->i_length = in->i_length / i_count;
1392 rtp_packetize_send( id, out );
1394 p_data += i_payload;
1395 i_data -= i_payload;
1402 static int rtp_packetize_mpv( sout_stream_t *p_stream, sout_stream_id_t *id,
1405 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1406 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1408 uint8_t *p_data = in->p_buffer;
1409 int i_data = in->i_buffer;
1411 int b_sequence_start = 0;
1412 int i_temporal_ref = 0;
1413 int i_picture_coding_type = 0;
1414 int i_fbv = 0, i_bfc = 0, i_ffv = 0, i_ffc = 0;
1415 int b_start_slice = 0;
1417 /* preparse this packet to get some info */
1418 if( in->i_buffer > 4 )
1420 uint8_t *p = p_data;
1421 int i_rest = in->i_buffer;
1425 while( i_rest > 4 &&
1426 ( p[0] != 0x00 || p[1] != 0x00 || p[2] != 0x01 ) )
1440 /* sequence start code */
1441 b_sequence_start = 1;
1443 else if( *p == 0x00 && i_rest >= 4 )
1446 i_temporal_ref = ( p[1] << 2) |((p[2]>>6)&0x03);
1447 i_picture_coding_type = (p[2] >> 3)&0x07;
1449 if( i_rest >= 4 && ( i_picture_coding_type == 2 ||
1450 i_picture_coding_type == 3 ) )
1452 i_ffv = (p[3] >> 2)&0x01;
1453 i_ffc = ((p[3]&0x03) << 1)|((p[4]>>7)&0x01);
1454 if( i_rest > 4 && i_picture_coding_type == 3 )
1456 i_fbv = (p[4]>>6)&0x01;
1457 i_bfc = (p[4]>>3)&0x07;
1461 else if( *p <= 0xaf )
1468 for( i = 0; i < i_count; i++ )
1470 int i_payload = __MIN( i_max, i_data );
1471 block_t *out = block_New( p_stream,
1473 uint32_t h = ( i_temporal_ref << 16 )|
1474 ( b_sequence_start << 13 )|
1475 ( b_start_slice << 12 )|
1476 ( i == i_count - 1 ? 1 << 11 : 0 )|
1477 ( i_picture_coding_type << 8 )|
1478 ( i_fbv << 7 )|( i_bfc << 4 )|( i_ffv << 3 )|i_ffc;
1480 /* rtp common header */
1481 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1482 in->i_pts > 0 ? in->i_pts : in->i_dts );
1484 /* MBZ:5 T:1 TR:10 AN:1 N:1 S:1 B:1 E:1 P:3 FBV:1 BFC:3 FFV:1 FFC:3 */
1485 out->p_buffer[12] = ( h >> 24 )&0xff;
1486 out->p_buffer[13] = ( h >> 16 )&0xff;
1487 out->p_buffer[14] = ( h >> 8 )&0xff;
1488 out->p_buffer[15] = ( h )&0xff;
1490 memcpy( &out->p_buffer[16], p_data, i_payload );
1492 out->i_buffer = 16 + i_payload;
1493 out->i_dts = in->i_dts + i * in->i_length / i_count;
1494 out->i_length = in->i_length / i_count;
1496 rtp_packetize_send( id, out );
1498 p_data += i_payload;
1499 i_data -= i_payload;
1505 static int rtp_packetize_ac3( sout_stream_t *p_stream, sout_stream_id_t *id,
1508 int i_max = id->i_mtu - 12 - 2; /* payload max in one packet */
1509 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1511 uint8_t *p_data = in->p_buffer;
1512 int i_data = in->i_buffer;
1515 for( i = 0; i < i_count; i++ )
1517 int i_payload = __MIN( i_max, i_data );
1518 block_t *out = block_New( p_stream, 14 + i_payload );
1520 /* rtp common header */
1521 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1523 out->p_buffer[12] = 1;
1525 out->p_buffer[13] = 0x00;
1527 memcpy( &out->p_buffer[14], p_data, i_payload );
1529 out->i_buffer = 14 + i_payload;
1530 out->i_dts = in->i_dts + i * in->i_length / i_count;
1531 out->i_length = in->i_length / i_count;
1533 rtp_packetize_send( id, out );
1535 p_data += i_payload;
1536 i_data -= i_payload;
1542 static int rtp_packetize_split( sout_stream_t *p_stream, sout_stream_id_t *id,
1545 int i_max = id->i_mtu - 12; /* payload max in one packet */
1546 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1548 uint8_t *p_data = in->p_buffer;
1549 int i_data = in->i_buffer;
1552 for( i = 0; i < i_count; i++ )
1554 int i_payload = __MIN( i_max, i_data );
1555 block_t *out = block_New( p_stream, 12 + i_payload );
1557 /* rtp common header */
1558 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1559 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1560 memcpy( &out->p_buffer[12], p_data, i_payload );
1562 out->i_buffer = 12 + i_payload;
1563 out->i_dts = in->i_dts + i * in->i_length / i_count;
1564 out->i_length = in->i_length / i_count;
1566 rtp_packetize_send( id, out );
1568 p_data += i_payload;
1569 i_data -= i_payload;
1576 static int rtp_packetize_mp4a_latm( sout_stream_t *p_stream, sout_stream_id_t *id,
1579 int i_max = id->i_mtu - 14; /* payload max in one packet */
1580 int latmhdrsize = in->i_buffer / 0xff + 1;
1581 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1583 uint8_t *p_data = in->p_buffer, *p_header = NULL;
1584 int i_data = in->i_buffer;
1587 for( i = 0; i < i_count; i++ )
1589 int i_payload = __MIN( i_max, i_data );
1594 out = block_New( p_stream, 12 + latmhdrsize + i_payload );
1596 /* rtp common header */
1597 rtp_packetize_common( id, out, ((i == i_count - 1) ? 1 : 0),
1598 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1602 int tmp = in->i_buffer;
1604 p_header=out->p_buffer+12;
1614 memcpy( &out->p_buffer[12+latmhdrsize], p_data, i_payload );
1616 out->i_buffer = 12 + latmhdrsize + i_payload;
1617 out->i_dts = in->i_dts + i * in->i_length / i_count;
1618 out->i_length = in->i_length / i_count;
1620 rtp_packetize_send( id, out );
1622 p_data += i_payload;
1623 i_data -= i_payload;
1629 static int rtp_packetize_l16( sout_stream_t *p_stream, sout_stream_id_t *id,
1632 int i_max = id->i_mtu - 12; /* payload max in one packet */
1633 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1635 uint8_t *p_data = in->p_buffer;
1636 int i_data = in->i_buffer;
1641 int i_payload = (__MIN( i_max, i_data )/4)*4;
1642 block_t *out = block_New( p_stream, 12 + i_payload );
1644 /* rtp common header */
1645 rtp_packetize_common( id, out, 0,
1646 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1647 memcpy( &out->p_buffer[12], p_data, i_payload );
1649 out->i_buffer = 12 + i_payload;
1650 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1651 out->i_length = in->i_length / i_count;
1653 rtp_packetize_send( id, out );
1655 p_data += i_payload;
1656 i_data -= i_payload;
1663 static int rtp_packetize_l8( sout_stream_t *p_stream, sout_stream_id_t *id,
1666 int i_max = id->i_mtu - 12; /* payload max in one packet */
1667 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1669 uint8_t *p_data = in->p_buffer;
1670 int i_data = in->i_buffer;
1675 int i_payload = (__MIN( i_max, i_data )/2)*2;
1676 block_t *out = block_New( p_stream, 12 + i_payload );
1678 /* rtp common header */
1679 rtp_packetize_common( id, out, 0,
1680 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1681 memcpy( &out->p_buffer[12], p_data, i_payload );
1683 out->i_buffer = 12 + i_payload;
1684 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1685 out->i_length = in->i_length / i_count;
1687 rtp_packetize_send( id, out );
1689 p_data += i_payload;
1690 i_data -= i_payload;
1697 static int rtp_packetize_mp4a( sout_stream_t *p_stream, sout_stream_id_t *id,
1700 int i_max = id->i_mtu - 16; /* payload max in one packet */
1701 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1703 uint8_t *p_data = in->p_buffer;
1704 int i_data = in->i_buffer;
1707 for( i = 0; i < i_count; i++ )
1709 int i_payload = __MIN( i_max, i_data );
1710 block_t *out = block_New( p_stream, 16 + i_payload );
1712 /* rtp common header */
1713 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1714 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1716 /* AU headers length (bits) */
1717 out->p_buffer[12] = 0;
1718 out->p_buffer[13] = 2*8;
1719 /* for each AU length 13 bits + idx 3bits, */
1720 out->p_buffer[14] = ( in->i_buffer >> 5 )&0xff;
1721 out->p_buffer[15] = ( (in->i_buffer&0xff)<<3 )|0;
1723 memcpy( &out->p_buffer[16], p_data, i_payload );
1725 out->i_buffer = 16 + i_payload;
1726 out->i_dts = in->i_dts + i * in->i_length / i_count;
1727 out->i_length = in->i_length / i_count;
1729 rtp_packetize_send( id, out );
1731 p_data += i_payload;
1732 i_data -= i_payload;
1740 #define RTP_H263_HEADER_SIZE (2) // plen = 0
1741 #define RTP_H263_PAYLOAD_START (14) // plen = 0
1742 static int rtp_packetize_h263( sout_stream_t *p_stream, sout_stream_id_t *id,
1745 uint8_t *p_data = in->p_buffer;
1746 int i_data = in->i_buffer;
1748 int i_max = id->i_mtu - 12 - RTP_H263_HEADER_SIZE; /* payload max in one packet */
1751 int b_v_bit = 0; // no pesky error resilience
1752 int i_plen = 0; // normally plen=0 for PSC packet
1753 int i_pebit = 0; // because plen=0
1758 return VLC_EGENERIC;
1760 if( p_data[0] || p_data[1] )
1762 return VLC_EGENERIC;
1764 /* remove 2 leading 0 bytes */
1767 i_count = ( i_data + i_max - 1 ) / i_max;
1769 for( i = 0; i < i_count; i++ )
1771 int i_payload = __MIN( i_max, i_data );
1772 block_t *out = block_New( p_stream,
1773 RTP_H263_PAYLOAD_START + i_payload );
1774 b_p_bit = (i == 0) ? 1 : 0;
1775 h = ( b_p_bit << 10 )|
1780 /* rtp common header */
1781 //b_m_bit = 1; // always contains end of frame
1782 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1783 in->i_pts > 0 ? in->i_pts : in->i_dts );
1786 out->p_buffer[12] = ( h >> 8 )&0xff;
1787 out->p_buffer[13] = ( h )&0xff;
1788 memcpy( &out->p_buffer[RTP_H263_PAYLOAD_START], p_data, i_payload );
1790 out->i_buffer = RTP_H263_PAYLOAD_START + i_payload;
1791 out->i_dts = in->i_dts + i * in->i_length / i_count;
1792 out->i_length = in->i_length / i_count;
1794 rtp_packetize_send( id, out );
1796 p_data += i_payload;
1797 i_data -= i_payload;
1805 rtp_packetize_h264_nal( sout_stream_t *p_stream, sout_stream_id_t *id,
1806 const uint8_t *p_data, int i_data, int64_t i_pts,
1807 int64_t i_dts, vlc_bool_t b_last, int64_t i_length )
1809 const int i_max = id->i_mtu - 12; /* payload max in one packet */
1816 i_nal_hdr = p_data[3];
1817 i_nal_type = i_nal_hdr&0x1f;
1819 /* Skip start code */
1824 if( i_data <= i_max )
1826 /* Single NAL unit packet */
1827 block_t *out = block_New( p_stream, 12 + i_data );
1829 out->i_length = i_length;
1832 rtp_packetize_common( id, out, b_last, i_pts );
1833 out->i_buffer = 12 + i_data;
1835 memcpy( &out->p_buffer[12], p_data, i_data );
1837 rtp_packetize_send( id, out );
1841 /* FU-A Fragmentation Unit without interleaving */
1842 const int i_count = ( i_data-1 + i_max-2 - 1 ) / (i_max-2);
1848 for( i = 0; i < i_count; i++ )
1850 const int i_payload = __MIN( i_data, i_max-2 );
1851 block_t *out = block_New( p_stream, 12 + 2 + i_payload );
1852 out->i_dts = i_dts + i * i_length / i_count;
1853 out->i_length = i_length / i_count;
1856 rtp_packetize_common( id, out, (b_last && i_payload == i_data), i_pts );
1857 out->i_buffer = 14 + i_payload;
1860 out->p_buffer[12] = 0x00 | (i_nal_hdr & 0x60) | 28;
1862 out->p_buffer[13] = ( i == 0 ? 0x80 : 0x00 ) | ( (i == i_count-1) ? 0x40 : 0x00 ) | i_nal_type;
1863 memcpy( &out->p_buffer[14], p_data, i_payload );
1865 rtp_packetize_send( id, out );
1867 i_data -= i_payload;
1868 p_data += i_payload;
1874 static int rtp_packetize_h264( sout_stream_t *p_stream, sout_stream_id_t *id,
1877 const uint8_t *p_buffer = in->p_buffer;
1878 int i_buffer = in->i_buffer;
1880 while( i_buffer > 4 && ( p_buffer[0] != 0 || p_buffer[1] != 0 || p_buffer[2] != 1 ) )
1886 /* Split nal units */
1887 while( i_buffer > 4 )
1890 int i_size = i_buffer;
1891 int i_skip = i_buffer;
1893 /* search nal end */
1894 for( i_offset = 4; i_offset+2 < i_buffer ; i_offset++)
1896 if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 1 )
1898 /* we found another startcode */
1899 i_size = i_offset - ( p_buffer[i_offset-1] == 0 ? 1 : 0);
1904 /* TODO add STAP-A to remove a lot of overhead with small slice/sei/... */
1905 rtp_packetize_h264_nal( p_stream, id, p_buffer, i_size,
1906 (in->i_pts > 0 ? in->i_pts : in->i_dts), in->i_dts,
1907 (i_size >= i_buffer), in->i_length * i_size / in->i_buffer );
1915 static int rtp_packetize_amr( sout_stream_t *p_stream, sout_stream_id_t *id,
1918 int i_max = id->i_mtu - 14; /* payload max in one packet */
1919 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1921 uint8_t *p_data = in->p_buffer;
1922 int i_data = in->i_buffer;
1925 /* Only supports octet-aligned mode */
1926 for( i = 0; i < i_count; i++ )
1928 int i_payload = __MIN( i_max, i_data );
1929 block_t *out = block_New( p_stream, 14 + i_payload );
1931 /* rtp common header */
1932 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1933 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1934 /* Payload header */
1935 out->p_buffer[12] = 0xF0; /* CMR */
1936 out->p_buffer[13] = p_data[0]&0x7C; /* ToC */ /* FIXME: frame type */
1938 /* FIXME: are we fed multiple frames ? */
1939 memcpy( &out->p_buffer[14], p_data+1, i_payload-1 );
1941 out->i_buffer = 14 + i_payload-1;
1942 out->i_dts = in->i_dts + i * in->i_length / i_count;
1943 out->i_length = in->i_length / i_count;
1945 rtp_packetize_send( id, out );
1947 p_data += i_payload;
1948 i_data -= i_payload;
1954 /*****************************************************************************
1956 *****************************************************************************/
1958 /** Add an ES to a non-RTP muxed stream */
1959 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1961 sout_input_t *p_input;
1962 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1963 assert( p_mux != NULL );
1965 p_input = sout_MuxAddStream( p_mux, p_fmt );
1966 if( p_input == NULL )
1968 msg_Err( p_stream, "cannot add this stream to the muxer" );
1972 return (sout_stream_id_t *)p_input;
1976 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1979 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1980 assert( p_mux != NULL );
1982 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1987 /** Remove an ES from a non-RTP muxed stream */
1988 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1990 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1991 assert( p_mux != NULL );
1993 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1998 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1999 const block_t *p_buffer )
2001 sout_stream_sys_t *p_sys = p_stream->p_sys;
2002 sout_stream_id_t *id = p_sys->es[0];
2004 int64_t i_dts = p_buffer->i_dts;
2006 uint8_t *p_data = p_buffer->p_buffer;
2007 unsigned int i_data = p_buffer->i_buffer;
2008 unsigned int i_max = id->i_mtu - 12;
2010 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
2014 unsigned int i_size;
2016 /* output complete packet */
2017 if( p_sys->packet &&
2018 p_sys->packet->i_buffer + i_data > i_max )
2020 rtp_packetize_send( id, p_sys->packet );
2021 p_sys->packet = NULL;
2024 if( p_sys->packet == NULL )
2026 /* allocate a new packet */
2027 p_sys->packet = block_New( p_stream, id->i_mtu );
2028 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
2029 p_sys->packet->i_dts = i_dts;
2030 p_sys->packet->i_length = p_buffer->i_length / i_packet;
2031 i_dts += p_sys->packet->i_length;
2034 i_size = __MIN( i_data,
2035 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
2037 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
2040 p_sys->packet->i_buffer += i_size;
2049 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
2052 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
2058 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
2060 p_next = p_buffer->p_next;
2061 block_Release( p_buffer );
2069 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
2071 sout_access_out_t *p_grab;
2073 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
2074 if( p_grab == NULL )
2077 p_grab->p_module = NULL;
2078 p_grab->p_sout = p_stream->p_sout;
2079 p_grab->psz_access = strdup( "grab" );
2080 p_grab->p_cfg = NULL;
2081 p_grab->psz_path = strdup( "" );
2082 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
2083 p_grab->pf_seek = NULL;
2084 p_grab->pf_write = AccessOutGrabberWrite;