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-"
108 set_shortname( _("RTP"));
109 set_description( _("RTP stream output") );
110 set_capability( "sout stream", 0 );
111 add_shortcut( "rtp" );
112 set_category( CAT_SOUT );
113 set_subcategory( SUBCAT_SOUT_STREAM );
115 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DST_TEXT,
116 DST_LONGTEXT, VLC_TRUE );
117 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
118 SDP_LONGTEXT, VLC_TRUE );
119 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
120 MUX_LONGTEXT, VLC_TRUE );
122 add_string( SOUT_CFG_PREFIX "name", "NONE", NULL, NAME_TEXT,
123 NAME_LONGTEXT, VLC_TRUE );
124 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
125 DESC_LONGTEXT, VLC_TRUE );
126 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
127 URL_LONGTEXT, VLC_TRUE );
128 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
129 EMAIL_LONGTEXT, VLC_TRUE );
131 add_integer( SOUT_CFG_PREFIX "port", 1234, NULL, PORT_TEXT,
132 PORT_LONGTEXT, VLC_TRUE );
133 add_integer( SOUT_CFG_PREFIX "port-audio", 1230, NULL, PORT_AUDIO_TEXT,
134 PORT_AUDIO_LONGTEXT, VLC_TRUE );
135 add_integer( SOUT_CFG_PREFIX "port-video", 1232, NULL, PORT_VIDEO_TEXT,
136 PORT_VIDEO_LONGTEXT, VLC_TRUE );
138 add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
139 TTL_LONGTEXT, VLC_TRUE );
141 add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
142 RFC3016_LONGTEXT, VLC_FALSE );
144 set_callbacks( Open, Close );
147 /*****************************************************************************
148 * Exported prototypes
149 *****************************************************************************/
150 static const char *ppsz_sout_options[] = {
151 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
152 "description", "url","email", "mp4a-latm", NULL
155 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
156 static int Del ( sout_stream_t *, sout_stream_id_t * );
157 static int Send( sout_stream_t *, sout_stream_id_t *,
159 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
160 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
161 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
164 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
166 static void SDPHandleUrl( sout_stream_t *, char * );
168 static int SapSetup( sout_stream_t *p_stream );
169 static int FileSetup( sout_stream_t *p_stream );
170 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t * );
172 struct sout_stream_sys_t
178 vlc_mutex_t lock_sdp;
180 char *psz_session_name;
181 char *psz_session_description;
182 char *psz_session_url;
183 char *psz_session_email;
186 vlc_bool_t b_export_sdp_file;
189 vlc_bool_t b_export_sap;
190 session_descriptor_t *p_session;
192 httpd_host_t *p_httpd_host;
193 httpd_file_t *p_httpd_file;
198 char *psz_destination;
205 /* when need to use a private one or when using muxer */
208 /* in case we do TS/PS over rtp */
210 sout_access_out_t *p_grab;
216 sout_stream_id_t **es;
219 typedef int (*pf_rtp_packetizer_t)( sout_stream_t *, sout_stream_id_t *,
222 struct sout_stream_id_t
224 sout_stream_t *p_stream;
226 uint32_t i_timestamp_start;
228 uint8_t i_payload_type;
239 /* Packetizer specific fields */
240 pf_rtp_packetizer_t pf_packetize;
244 vlc_mutex_t lock_sink;
247 rtsp_stream_id_t *rtsp_id;
251 /*****************************************************************************
253 *****************************************************************************/
254 static int Open( vlc_object_t *p_this )
256 sout_stream_t *p_stream = (sout_stream_t*)p_this;
257 sout_instance_t *p_sout = p_stream->p_sout;
258 sout_stream_sys_t *p_sys = NULL;
259 config_chain_t *p_cfg = NULL;
261 vlc_bool_t b_rtsp = VLC_FALSE;
263 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
264 ppsz_sout_options, p_stream->p_cfg );
266 p_sys = malloc( sizeof( sout_stream_sys_t ) );
270 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
271 p_sys->psz_session_name = var_GetString( p_stream, SOUT_CFG_PREFIX "name" );
272 p_sys->psz_session_description = var_GetString( p_stream, SOUT_CFG_PREFIX "description" );
273 p_sys->psz_session_url = var_GetString( p_stream, SOUT_CFG_PREFIX "url" );
274 p_sys->psz_session_email = var_GetString( p_stream, SOUT_CFG_PREFIX "email" );
276 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
277 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
278 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
280 p_sys->psz_sdp_file = NULL;
282 if( p_sys->i_port_audio == p_sys->i_port_video )
284 msg_Err( p_stream, "audio and video port cannot be the same" );
285 p_sys->i_port_audio = 0;
286 p_sys->i_port_video = 0;
289 if( !p_sys->psz_session_name )
291 if( p_sys->psz_destination )
292 p_sys->psz_session_name = strdup( p_sys->psz_destination );
294 p_sys->psz_session_name = strdup( "NONE" );
297 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
299 if( !strcmp( p_cfg->psz_name, "sdp" ) )
301 if( p_cfg->psz_value && !strncasecmp( p_cfg->psz_value, "rtsp", 4 ) )
310 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
313 if( !strncasecmp( psz, "rtsp", 4 ) )
319 if( p_sys->psz_destination == NULL )
323 msg_Err( p_stream, "missing destination and not in RTSP mode" );
328 else if( p_sys->i_port <= 0 )
330 msg_Err( p_stream, "invalid port" );
335 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
336 if( p_sys->i_ttl == 0 )
338 /* Normally, we should let the default hop limit up to the core,
339 * but we have to know it to build our SDP properly, which is why
340 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
342 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
344 if( p_sys->i_ttl > 255 )
346 /* must not exceed 999 once formatted */
348 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
350 p_sys->i_payload_type = 96;
354 p_sys->psz_sdp = NULL;
356 p_sys->i_sdp_id = mdate();
357 p_sys->i_sdp_version = 1;
358 p_sys->psz_sdp = NULL;
360 p_sys->b_export_sap = VLC_FALSE;
361 p_sys->b_export_sdp_file = VLC_FALSE;
362 p_sys->p_session = NULL;
364 p_sys->p_httpd_host = NULL;
365 p_sys->p_httpd_file = NULL;
367 p_stream->p_sys = p_sys;
369 vlc_mutex_init( p_stream, &p_sys->lock_sdp );
370 vlc_mutex_init( p_stream, &p_sys->lock_es );
372 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
375 sout_stream_id_t *id;
376 const char *psz_rtpmap;
379 /* Check muxer type */
380 if( !strncasecmp( psz, "ps", 2 )
381 || !strncasecmp( psz, "mpeg1", 5 ) )
383 psz_rtpmap = "MP2P/90000";
385 else if( !strncasecmp( psz, "ts", 2 ) )
387 psz_rtpmap = "MP2T/90000";
392 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
394 vlc_mutex_destroy( &p_sys->lock_sdp );
395 vlc_mutex_destroy( &p_sys->lock_es );
400 p_sys->p_grab = GrabberCreate( p_stream );
401 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
404 if( p_sys->p_mux == NULL )
406 msg_Err( p_stream, "cannot create muxer" );
407 sout_AccessOutDelete( p_sys->p_grab );
408 vlc_mutex_destroy( &p_sys->lock_sdp );
409 vlc_mutex_destroy( &p_sys->lock_es );
414 id = Add( p_stream, NULL );
417 sout_MuxDelete( p_sys->p_mux );
418 sout_AccessOutDelete( p_sys->p_grab );
419 vlc_mutex_destroy( &p_sys->lock_sdp );
420 vlc_mutex_destroy( &p_sys->lock_es );
425 id->psz_rtpmap = strdup( psz_rtpmap );
426 id->i_payload_type = i_payload_type;
428 p_sys->packet = NULL;
430 p_stream->pf_add = MuxAdd;
431 p_stream->pf_del = MuxDel;
432 p_stream->pf_send = MuxSend;
437 p_sys->p_grab = NULL;
439 p_stream->pf_add = Add;
440 p_stream->pf_del = Del;
441 p_stream->pf_send = Send;
444 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
447 config_chain_t *p_cfg;
449 SDPHandleUrl( p_stream, psz );
451 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
453 if( !strcmp( p_cfg->psz_name, "sdp" ) )
455 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
458 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
459 if( !strcmp( p_cfg->psz_value, psz ) )
462 SDPHandleUrl( p_stream, p_cfg->psz_value );
468 /* update p_sout->i_out_pace_nocontrol */
469 p_stream->p_sout->i_out_pace_nocontrol++;
474 /*****************************************************************************
476 *****************************************************************************/
477 static void Close( vlc_object_t * p_this )
479 sout_stream_t *p_stream = (sout_stream_t*)p_this;
480 sout_stream_sys_t *p_sys = p_stream->p_sys;
482 /* update p_sout->i_out_pace_nocontrol */
483 p_stream->p_sout->i_out_pace_nocontrol--;
487 assert( p_sys->i_es == 1 );
488 Del( p_stream, p_sys->es[0] );
490 sout_MuxDelete( p_sys->p_mux );
491 sout_AccessOutDelete( p_sys->p_grab );
494 block_Release( p_sys->packet );
496 if( p_sys->b_export_sap )
499 SapSetup( p_stream );
503 if( p_sys->rtsp != NULL )
504 RtspUnsetup( p_sys->rtsp );
506 vlc_mutex_destroy( &p_sys->lock_sdp );
507 vlc_mutex_destroy( &p_sys->lock_es );
509 if( p_sys->p_httpd_file )
510 httpd_FileDelete( p_sys->p_httpd_file );
512 if( p_sys->p_httpd_host )
513 httpd_HostDelete( p_sys->p_httpd_host );
515 free( p_sys->psz_session_name );
516 free( p_sys->psz_session_description );
517 free( p_sys->psz_session_url );
518 free( p_sys->psz_session_email );
519 free( p_sys->psz_sdp );
521 if( p_sys->b_export_sdp_file )
524 unlink( p_sys->psz_sdp_file );
526 free( p_sys->psz_sdp_file );
528 free( p_sys->psz_destination );
532 /*****************************************************************************
534 *****************************************************************************/
535 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
537 sout_stream_sys_t *p_sys = p_stream->p_sys;
540 vlc_UrlParse( &url, psz_url, 0 );
541 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
543 if( p_sys->p_httpd_file )
545 msg_Err( p_stream, "you can use sdp=http:// only once" );
549 if( HttpSetup( p_stream, &url ) )
551 msg_Err( p_stream, "cannot export SDP as HTTP" );
554 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
556 if( p_sys->rtsp != NULL )
558 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
562 /* FIXME test if destination is multicast or no destination at all */
563 p_sys->rtsp = RtspSetup( p_stream, &url );
564 if( p_sys->rtsp == NULL )
566 msg_Err( p_stream, "cannot export SDP as RTSP" );
569 if( p_sys->p_mux != NULL )
571 sout_stream_id_t *id = p_sys->es[0];
572 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0,
573 p_sys->psz_destination, p_sys->i_ttl,
574 id->i_port, id->i_port + 1 );
577 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
578 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
580 p_sys->b_export_sap = VLC_TRUE;
581 SapSetup( p_stream );
583 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
585 if( p_sys->b_export_sdp_file )
587 msg_Err( p_stream, "you can use sdp=file:// only once" );
590 p_sys->b_export_sdp_file = VLC_TRUE;
591 psz_url = &psz_url[5];
592 if( psz_url[0] == '/' && psz_url[1] == '/' )
594 p_sys->psz_sdp_file = strdup( psz_url );
598 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
603 vlc_UrlClean( &url );
606 /*****************************************************************************
608 *****************************************************************************/
609 /* FIXME http://www.faqs.org/rfcs/rfc2327.html
610 All text fields should be UTF-8 encoded. Use global a:charset to announce this.
611 o= - should be local username (no spaces allowed)
612 o= time should be hashed with some other value to garantue uniqueness
613 o= we need IP6 support?
614 o= don't use the localhost address. use fully qualified domain name or IP4 address
615 p= international phone number (pass via vars?)
617 a= recvonly (missing)
618 a= type:broadcast (missing)
619 a= charset: (normally charset should be UTF-8, this can be used to override s= and i=)
620 a= x-plgroup: (missing)
621 RTP packets need to get the correct src IP address */
623 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
625 const sout_stream_sys_t *p_sys = p_stream->p_sys;
627 const char *psz_destination = p_sys->psz_destination;
628 char *psz_sdp, *p, ipv;
631 * When we have a fixed destination (typically when we do multicast),
632 * we need to put the actual port numbers in the SDP.
633 * When there is no fixed destination, we only support RTSP unicast
634 * on-demand setup, so we should rather let the clients decide which ports
636 * When there is both a fixed destination and RTSP unicast, we need to
637 * put port numbers used by the fixed destination, otherwise the SDP would
638 * become totally incorrect for multicast use. It should be noted that
639 * port numbers from SDP with RTSP are only "recommendation" from the
640 * server to the clients (per RFC2326), so only broken clients will fail
641 * to handle this properly. There is no solution but to use two differents
642 * output chain with two different RTSP URLs if you need to handle this
645 int inclport = (psz_destination != NULL);
647 /* FIXME: breaks IP version check on unknown destination */
648 if( psz_destination == NULL )
649 psz_destination = "0.0.0.0";
651 i_size = sizeof( "v=0\r\n" ) +
652 sizeof( "o=- * * IN IP4 127.0.0.1\r\n" ) + 10 + 10 +
653 sizeof( "s=*\r\n" ) + strlen( p_sys->psz_session_name ) +
654 sizeof( "i=*\r\n" ) + strlen( p_sys->psz_session_description ) +
655 sizeof( "u=*\r\n" ) + strlen( p_sys->psz_session_url ) +
656 sizeof( "e=*\r\n" ) + strlen( p_sys->psz_session_email ) +
657 sizeof( "t=0 0\r\n" ) +
658 sizeof( "b=RR:0\r\n" ) +
659 sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
660 sizeof( "a=recvonly\r\n" ) +
661 sizeof( "a=type:broadcast\r\n" ) +
662 sizeof( "c=IN IP4 */*\r\n" ) + 20 + 10 +
663 strlen( psz_destination ) ;
664 for( i = 0; i < p_sys->i_es; i++ )
666 sout_stream_id_t *id = p_sys->es[i];
668 i_size += strlen( "m=**d*o * RTP/AVP *\r\n" ) + 10 + 10;
671 i_size += strlen( "b=AS: *\r\n") + 10;
675 i_size += strlen( "a=rtpmap:* *\r\n" ) + strlen( id->psz_rtpmap )+10;
679 i_size += strlen( "a=fmtp:* *\r\n" ) + strlen( id->psz_fmtp ) + 10;
681 if( rtsp_url != NULL )
683 i_size += strlen( "a=control:*/trackID=*\r\n" ) + strlen( rtsp_url ) + 10;
687 ipv = ( strchr( psz_destination, ':' ) != NULL ) ? '6' : '4';
689 p = psz_sdp = malloc( i_size );
690 p += sprintf( p, "v=0\r\n" );
691 p += sprintf( p, "o=- "I64Fu" %d IN IP%c %s\r\n",
692 p_sys->i_sdp_id, p_sys->i_sdp_version,
693 ipv, ipv == '6' ? "::1" : "127.0.0.1" );
694 if( *p_sys->psz_session_name )
695 p += sprintf( p, "s=%s\r\n", p_sys->psz_session_name );
696 if( *p_sys->psz_session_description )
697 p += sprintf( p, "i=%s\r\n", p_sys->psz_session_description );
698 if( *p_sys->psz_session_url )
699 p += sprintf( p, "u=%s\r\n", p_sys->psz_session_url );
700 if( *p_sys->psz_session_email )
701 p += sprintf( p, "e=%s\r\n", p_sys->psz_session_email );
703 p += sprintf( p, "t=0 0\r\n" ); /* permanent stream */
704 /* when scheduled from vlm, we should set this info correctly */
705 p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
706 p += sprintf( p, "a=recvonly\r\n" );
707 p += sprintf( p, "a=type:broadcast\r\n" );
709 p += sprintf( p, "c=IN IP%c %s", ipv, psz_destination );
712 && net_AddressIsMulticast( (vlc_object_t *)p_stream, psz_destination ) )
714 /* Add the deprecated TTL field if it is an IPv4 multicast address */
715 p += sprintf( p, "/%d", p_sys->i_ttl ?: 1 );
717 p += sprintf( p, "\r\n" );
718 p += sprintf( p, "b=RR:0\r\n" );
720 for( i = 0; i < p_sys->i_es; i++ )
722 sout_stream_id_t *id = p_sys->es[i];
723 const char *mime_major; /* major MIME type */
725 if( id->i_cat == AUDIO_ES )
726 mime_major = "audio";
728 if( id->i_cat == VIDEO_ES )
729 mime_major = "video";
733 p += sprintf( p, "m=%s %d RTP/AVP %d\r\n", mime_major,
734 inclport * id->i_port, id->i_payload_type );
738 p += sprintf(p,"b=AS:%d\r\n",id->i_bitrate);
742 p += sprintf( p, "a=rtpmap:%d %s\r\n", id->i_payload_type,
747 p += sprintf( p, "a=fmtp:%d %s\r\n", id->i_payload_type,
750 if( rtsp_url != NULL )
752 p += sprintf( p, "a=control:/trackID=%d\r\n", i );
759 /*****************************************************************************
761 *****************************************************************************/
762 static int rtp_packetize_l16 ( sout_stream_t *, sout_stream_id_t *, block_t * );
763 static int rtp_packetize_l8 ( sout_stream_t *, sout_stream_id_t *, block_t * );
764 static int rtp_packetize_mpa ( sout_stream_t *, sout_stream_id_t *, block_t * );
765 static int rtp_packetize_mpv ( sout_stream_t *, sout_stream_id_t *, block_t * );
766 static int rtp_packetize_ac3 ( sout_stream_t *, sout_stream_id_t *, block_t * );
767 static int rtp_packetize_split( sout_stream_t *, sout_stream_id_t *, block_t * );
768 static int rtp_packetize_mp4a ( sout_stream_t *, sout_stream_id_t *, block_t * );
769 static int rtp_packetize_mp4a_latm ( sout_stream_t *, sout_stream_id_t *, block_t * );
770 static int rtp_packetize_h263 ( sout_stream_t *, sout_stream_id_t *, block_t * );
771 static int rtp_packetize_h264 ( sout_stream_t *, sout_stream_id_t *, block_t * );
772 static int rtp_packetize_amr ( sout_stream_t *, sout_stream_id_t *, block_t * );
774 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
776 static const char hex[16] = "0123456789abcdef";
779 for( i = 0; i < i_data; i++ )
781 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
782 s[2*i+1] = hex[(p_data[i] )&0xf];
788 /** Add an ES as a new RTP stream */
789 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
791 /* NOTE: As a special case, if we use a non-RTP
792 * mux (TS/PS), then p_fmt is NULL. */
793 sout_stream_sys_t *p_sys = p_stream->p_sys;
794 sout_stream_id_t *id;
798 /* Choose the port */
803 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
805 i_port = p_sys->i_port_audio;
806 p_sys->i_port_audio = 0;
809 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
811 i_port = p_sys->i_port_video;
812 p_sys->i_port_video = 0;
817 if( p_sys->i_port != p_sys->i_port_audio
818 && p_sys->i_port != p_sys->i_port_video )
820 i_port = p_sys->i_port;
827 /* now create the rtp specific stuff */
828 id = malloc( sizeof( sout_stream_id_t ) );
829 id->p_stream = p_stream;
831 id->i_timestamp_start = rand()&0xffffffff;
832 id->i_sequence = rand()&0xffff;
833 id->i_payload_type = p_sys->i_payload_type;
834 id->ssrc[0] = rand()&0xff;
835 id->ssrc[1] = rand()&0xff;
836 id->ssrc[2] = rand()&0xff;
837 id->ssrc[3] = rand()&0xff;
839 id->psz_rtpmap = NULL;
841 id->i_clock_rate = 90000; /* most common case */
845 id->i_cat = p_fmt->i_cat;
846 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
850 id->i_cat = VIDEO_ES;
854 id->pf_packetize = NULL;
855 id->i_mtu = config_GetInt( p_stream, "mtu" );
856 if( id->i_mtu <= 12 + 16 )
857 id->i_mtu = 576 - 20 - 8; /* pessimistic */
859 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
861 vlc_mutex_init( p_stream, &id->lock_sink );
866 if( p_sys->psz_destination != NULL )
868 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
869 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
870 i_port, ttl, IPPROTO_UDP );
874 msg_Err( p_stream, "cannot create RTP socket" );
875 vlc_mutex_destroy( &id->lock_sink );
879 rtp_add_sink( id, fd );
885 switch( p_fmt->i_codec )
887 case VLC_FOURCC( 's', '1', '6', 'b' ):
888 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
890 id->i_payload_type = 11;
892 else if( p_fmt->audio.i_channels == 2 &&
893 p_fmt->audio.i_rate == 44100 )
895 id->i_payload_type = 10;
897 if( asprintf( &id->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
898 p_fmt->audio.i_channels ) == -1 )
899 id->psz_rtpmap = NULL;
900 id->i_clock_rate = p_fmt->audio.i_rate;
901 id->pf_packetize = rtp_packetize_l16;
903 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
904 if( asprintf( &id->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
905 p_fmt->audio.i_channels ) == -1 )
906 id->psz_rtpmap = NULL;
907 id->i_clock_rate = p_fmt->audio.i_rate;
908 id->pf_packetize = rtp_packetize_l8;
910 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
911 id->i_payload_type = 14;
912 id->psz_rtpmap = strdup( "MPA/90000" );
913 id->pf_packetize = rtp_packetize_mpa;
915 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
916 id->i_payload_type = 32;
917 id->psz_rtpmap = strdup( "MPV/90000" );
918 id->pf_packetize = rtp_packetize_mpv;
920 case VLC_FOURCC( 'a', '5', '2', ' ' ):
921 id->psz_rtpmap = strdup( "ac3/90000" );
922 id->pf_packetize = rtp_packetize_ac3;
924 case VLC_FOURCC( 'H', '2', '6', '3' ):
925 id->psz_rtpmap = strdup( "H263-1998/90000" );
926 id->pf_packetize = rtp_packetize_h263;
928 case VLC_FOURCC( 'h', '2', '6', '4' ):
929 id->psz_rtpmap = strdup( "H264/90000" );
930 id->pf_packetize = rtp_packetize_h264;
933 if( p_fmt->i_extra > 0 )
935 uint8_t *p_buffer = p_fmt->p_extra;
936 int i_buffer = p_fmt->i_extra;
937 char *p_64_sps = NULL;
938 char *p_64_pps = NULL;
941 while( i_buffer > 4 &&
942 p_buffer[0] == 0 && p_buffer[1] == 0 &&
943 p_buffer[2] == 0 && p_buffer[3] == 1 )
945 const int i_nal_type = p_buffer[4]&0x1f;
949 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
952 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
954 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
956 /* we found another startcode */
961 if( i_nal_type == 7 )
963 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
964 sprintf_hexa( hexa, &p_buffer[5], 3 );
966 else if( i_nal_type == 8 )
968 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
974 if( p_64_sps && p_64_pps &&
975 ( asprintf( &id->psz_fmtp,
976 "packetization-mode=1;profile-level-id=%s;"
977 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
984 id->psz_fmtp = strdup( "packetization-mode=1" );
987 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
989 char hexa[2*p_fmt->i_extra +1];
991 id->psz_rtpmap = strdup( "MP4V-ES/90000" );
992 id->pf_packetize = rtp_packetize_split;
993 if( p_fmt->i_extra > 0 )
995 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
996 if( asprintf( &id->psz_fmtp,
997 "profile-level-id=3; config=%s;", hexa ) == -1 )
1002 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1004 id->i_clock_rate = p_fmt->audio.i_rate;
1008 char hexa[2*p_fmt->i_extra +1];
1010 if( asprintf( &id->psz_rtpmap, "mpeg4-generic/%d",
1011 p_fmt->audio.i_rate ) == -1 )
1012 id->psz_rtpmap = NULL;
1013 id->pf_packetize = rtp_packetize_mp4a;
1014 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1015 if( asprintf( &id->psz_fmtp,
1016 "streamtype=5; profile-level-id=15; "
1017 "mode=AAC-hbr; config=%s; SizeLength=13; "
1018 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1020 id->psz_fmtp = NULL;
1026 unsigned char config[6];
1027 unsigned int aacsrates[15] = {
1028 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1029 16000, 12000, 11025, 8000, 7350, 0, 0 };
1031 for( i = 0; i < 15; i++ )
1032 if( p_fmt->audio.i_rate == aacsrates[i] )
1038 config[3]=p_fmt->audio.i_channels<<4;
1042 if( asprintf( &id->psz_rtpmap, "MP4A-LATM/%d/%d",
1043 p_fmt->audio.i_rate,
1044 p_fmt->audio.i_channels ) == -1)
1045 id->psz_rtpmap = NULL;
1046 id->pf_packetize = rtp_packetize_mp4a_latm;
1047 sprintf_hexa( hexa, config, 6 );
1048 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1049 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1050 id->psz_fmtp = NULL;
1054 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1055 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1056 "AMR/8000/2" : "AMR/8000" );
1057 id->psz_fmtp = strdup( "octet-align=1" );
1058 id->i_clock_rate = p_fmt->audio.i_rate;
1059 id->pf_packetize = rtp_packetize_amr;
1061 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1062 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1063 "AMR-WB/16000/2" : "AMR-WB/16000" );
1064 id->psz_fmtp = strdup( "octet-align=1" );
1065 id->i_clock_rate = p_fmt->audio.i_rate;
1066 id->pf_packetize = rtp_packetize_amr;
1070 msg_Err( p_stream, "cannot add this stream (unsupported "
1071 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1073 rtp_del_sink( id, id->fdv[0] );
1074 vlc_mutex_destroy( &id->lock_sink );
1079 if( id->i_payload_type == p_sys->i_payload_type )
1080 p_sys->i_payload_type++;
1082 if( p_sys->rtsp != NULL )
1083 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1084 p_sys->psz_destination,
1085 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1087 /* Update p_sys context */
1088 vlc_mutex_lock( &p_sys->lock_es );
1089 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1090 vlc_mutex_unlock( &p_sys->lock_es );
1092 psz_sdp = SDPGenerate( p_stream, NULL );
1094 vlc_mutex_lock( &p_sys->lock_sdp );
1095 free( p_sys->psz_sdp );
1096 p_sys->psz_sdp = psz_sdp;
1097 vlc_mutex_unlock( &p_sys->lock_sdp );
1099 p_sys->i_sdp_version++;
1101 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1103 /* Update SDP (sap/file) */
1104 if( p_sys->b_export_sap ) SapSetup( p_stream );
1105 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1110 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1112 sout_stream_sys_t *p_sys = p_stream->p_sys;
1114 vlc_mutex_lock( &p_sys->lock_es );
1115 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1116 vlc_mutex_unlock( &p_sys->lock_es );
1119 if( id->i_port > 0 )
1121 if( id->i_cat == AUDIO_ES && p_sys->i_port_audio == 0 )
1122 p_sys->i_port_audio = id->i_port;
1123 else if( id->i_cat == VIDEO_ES && p_sys->i_port_video == 0 )
1124 p_sys->i_port_video = id->i_port;
1127 free( id->psz_rtpmap );
1128 free( id->psz_fmtp );
1131 RtspDelId( p_sys->rtsp, id->rtsp_id );
1133 rtp_del_sink( id, id->fdv[0] ); /* sink for explicit dst= */
1135 vlc_mutex_destroy( &id->lock_sink );
1137 /* Update SDP (sap/file) */
1138 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1139 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1145 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1150 assert( p_stream->p_sys->p_mux == NULL );
1152 while( p_buffer != NULL )
1154 p_next = p_buffer->p_next;
1155 if( id->pf_packetize( p_stream, id, p_buffer ) )
1158 block_Release( p_buffer );
1164 /****************************************************************************
1166 ****************************************************************************/
1167 static int SapSetup( sout_stream_t *p_stream )
1169 sout_stream_sys_t *p_sys = p_stream->p_sys;
1170 sout_instance_t *p_sout = p_stream->p_sout;
1171 announce_method_t *p_method = sout_SAPMethod();
1173 /* Remove the previous session */
1174 if( p_sys->p_session != NULL)
1176 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1177 sout_AnnounceSessionDestroy( p_sys->p_session );
1178 p_sys->p_session = NULL;
1181 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1183 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout, SOUT_CFG_PREFIX,
1185 p_sys->psz_destination,
1189 sout_MethodRelease( p_method );
1193 /****************************************************************************
1195 ****************************************************************************/
1196 static int FileSetup( sout_stream_t *p_stream )
1198 sout_stream_sys_t *p_sys = p_stream->p_sys;
1201 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1203 msg_Err( p_stream, "cannot open file '%s' (%s)",
1204 p_sys->psz_sdp_file, strerror(errno) );
1205 return VLC_EGENERIC;
1208 fputs( p_sys->psz_sdp, f );
1214 /****************************************************************************
1216 ****************************************************************************/
1217 static int HttpCallback( httpd_file_sys_t *p_args,
1218 httpd_file_t *, uint8_t *p_request,
1219 uint8_t **pp_data, int *pi_data );
1221 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t *url)
1223 sout_stream_sys_t *p_sys = p_stream->p_sys;
1225 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1226 url->i_port > 0 ? url->i_port : 80 );
1227 if( p_sys->p_httpd_host )
1229 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1230 url->psz_path ? url->psz_path : "/",
1233 HttpCallback, (void*)p_sys );
1235 if( p_sys->p_httpd_file == NULL )
1237 return VLC_EGENERIC;
1242 static int HttpCallback( httpd_file_sys_t *p_args,
1243 httpd_file_t *f, uint8_t *p_request,
1244 uint8_t **pp_data, int *pi_data )
1246 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1248 vlc_mutex_lock( &p_sys->lock_sdp );
1249 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1251 *pi_data = strlen( p_sys->psz_sdp );
1252 *pp_data = malloc( *pi_data );
1253 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1260 vlc_mutex_unlock( &p_sys->lock_sdp );
1265 /****************************************************************************
1267 ****************************************************************************/
1268 static void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1269 int b_marker, int64_t i_pts )
1271 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / I64C(1000000);
1273 out->p_buffer[0] = 0x80;
1274 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1275 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1276 out->p_buffer[3] = ( id->i_sequence )&0xff;
1277 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1278 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1279 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1280 out->p_buffer[7] = ( i_timestamp )&0xff;
1282 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1288 static void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1291 vlc_mutex_lock( &id->lock_sink );
1292 for( i = 0; i < id->fdc; i++ )
1294 send( id->fdv[i], out->p_buffer, out->i_buffer, 0 );
1296 vlc_mutex_unlock( &id->lock_sink );
1298 block_Release( out );
1301 int rtp_add_sink( sout_stream_id_t *id, int fd )
1303 vlc_mutex_lock( &id->lock_sink );
1304 TAB_APPEND( id->fdc, id->fdv, fd );
1305 vlc_mutex_unlock( &id->lock_sink );
1309 void rtp_del_sink( sout_stream_id_t *id, int fd )
1311 /* NOTE: must be safe to use if fd is not included */
1312 vlc_mutex_lock( &id->lock_sink );
1313 TAB_REMOVE( id->fdc, id->fdv, fd );
1314 vlc_mutex_unlock( &id->lock_sink );
1318 static int rtp_packetize_mpa( sout_stream_t *p_stream, sout_stream_id_t *id,
1321 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1322 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1324 uint8_t *p_data = in->p_buffer;
1325 int i_data = in->i_buffer;
1328 for( i = 0; i < i_count; i++ )
1330 int i_payload = __MIN( i_max, i_data );
1331 block_t *out = block_New( p_stream, 16 + i_payload );
1333 /* rtp common header */
1334 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1336 out->p_buffer[12] = 0;
1337 out->p_buffer[13] = 0;
1338 /* fragment offset in the current frame */
1339 out->p_buffer[14] = ( (i*i_max) >> 8 )&0xff;
1340 out->p_buffer[15] = ( (i*i_max) )&0xff;
1341 memcpy( &out->p_buffer[16], p_data, i_payload );
1343 out->i_buffer = 16 + i_payload;
1344 out->i_dts = in->i_dts + i * in->i_length / i_count;
1345 out->i_length = in->i_length / i_count;
1347 rtp_packetize_send( id, out );
1349 p_data += i_payload;
1350 i_data -= i_payload;
1357 static int rtp_packetize_mpv( sout_stream_t *p_stream, sout_stream_id_t *id,
1360 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1361 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1363 uint8_t *p_data = in->p_buffer;
1364 int i_data = in->i_buffer;
1366 int b_sequence_start = 0;
1367 int i_temporal_ref = 0;
1368 int i_picture_coding_type = 0;
1369 int i_fbv = 0, i_bfc = 0, i_ffv = 0, i_ffc = 0;
1370 int b_start_slice = 0;
1372 /* preparse this packet to get some info */
1373 if( in->i_buffer > 4 )
1375 uint8_t *p = p_data;
1376 int i_rest = in->i_buffer;
1380 while( i_rest > 4 &&
1381 ( p[0] != 0x00 || p[1] != 0x00 || p[2] != 0x01 ) )
1395 /* sequence start code */
1396 b_sequence_start = 1;
1398 else if( *p == 0x00 && i_rest >= 4 )
1401 i_temporal_ref = ( p[1] << 2) |((p[2]>>6)&0x03);
1402 i_picture_coding_type = (p[2] >> 3)&0x07;
1404 if( i_rest >= 4 && ( i_picture_coding_type == 2 ||
1405 i_picture_coding_type == 3 ) )
1407 i_ffv = (p[3] >> 2)&0x01;
1408 i_ffc = ((p[3]&0x03) << 1)|((p[4]>>7)&0x01);
1409 if( i_rest > 4 && i_picture_coding_type == 3 )
1411 i_fbv = (p[4]>>6)&0x01;
1412 i_bfc = (p[4]>>3)&0x07;
1416 else if( *p <= 0xaf )
1423 for( i = 0; i < i_count; i++ )
1425 int i_payload = __MIN( i_max, i_data );
1426 block_t *out = block_New( p_stream,
1428 uint32_t h = ( i_temporal_ref << 16 )|
1429 ( b_sequence_start << 13 )|
1430 ( b_start_slice << 12 )|
1431 ( i == i_count - 1 ? 1 << 11 : 0 )|
1432 ( i_picture_coding_type << 8 )|
1433 ( i_fbv << 7 )|( i_bfc << 4 )|( i_ffv << 3 )|i_ffc;
1435 /* rtp common header */
1436 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1437 in->i_pts > 0 ? in->i_pts : in->i_dts );
1439 /* 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 */
1440 out->p_buffer[12] = ( h >> 24 )&0xff;
1441 out->p_buffer[13] = ( h >> 16 )&0xff;
1442 out->p_buffer[14] = ( h >> 8 )&0xff;
1443 out->p_buffer[15] = ( h )&0xff;
1445 memcpy( &out->p_buffer[16], p_data, i_payload );
1447 out->i_buffer = 16 + i_payload;
1448 out->i_dts = in->i_dts + i * in->i_length / i_count;
1449 out->i_length = in->i_length / i_count;
1451 rtp_packetize_send( id, out );
1453 p_data += i_payload;
1454 i_data -= i_payload;
1460 static int rtp_packetize_ac3( sout_stream_t *p_stream, sout_stream_id_t *id,
1463 int i_max = id->i_mtu - 12 - 2; /* payload max in one packet */
1464 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1466 uint8_t *p_data = in->p_buffer;
1467 int i_data = in->i_buffer;
1470 for( i = 0; i < i_count; i++ )
1472 int i_payload = __MIN( i_max, i_data );
1473 block_t *out = block_New( p_stream, 14 + i_payload );
1475 /* rtp common header */
1476 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1478 out->p_buffer[12] = 1;
1480 out->p_buffer[13] = 0x00;
1482 memcpy( &out->p_buffer[14], p_data, i_payload );
1484 out->i_buffer = 14 + i_payload;
1485 out->i_dts = in->i_dts + i * in->i_length / i_count;
1486 out->i_length = in->i_length / i_count;
1488 rtp_packetize_send( id, out );
1490 p_data += i_payload;
1491 i_data -= i_payload;
1497 static int rtp_packetize_split( sout_stream_t *p_stream, sout_stream_id_t *id,
1500 int i_max = id->i_mtu - 12; /* payload max in one packet */
1501 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1503 uint8_t *p_data = in->p_buffer;
1504 int i_data = in->i_buffer;
1507 for( i = 0; i < i_count; i++ )
1509 int i_payload = __MIN( i_max, i_data );
1510 block_t *out = block_New( p_stream, 12 + i_payload );
1512 /* rtp common header */
1513 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1514 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1515 memcpy( &out->p_buffer[12], p_data, i_payload );
1517 out->i_buffer = 12 + i_payload;
1518 out->i_dts = in->i_dts + i * in->i_length / i_count;
1519 out->i_length = in->i_length / i_count;
1521 rtp_packetize_send( id, out );
1523 p_data += i_payload;
1524 i_data -= i_payload;
1531 static int rtp_packetize_mp4a_latm( sout_stream_t *p_stream, sout_stream_id_t *id,
1534 int i_max = id->i_mtu - 14; /* payload max in one packet */
1535 int latmhdrsize = in->i_buffer / 0xff + 1;
1536 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1538 uint8_t *p_data = in->p_buffer, *p_header = NULL;
1539 int i_data = in->i_buffer;
1542 for( i = 0; i < i_count; i++ )
1544 int i_payload = __MIN( i_max, i_data );
1549 out = block_New( p_stream, 12 + latmhdrsize + i_payload );
1551 /* rtp common header */
1552 rtp_packetize_common( id, out, ((i == i_count - 1) ? 1 : 0),
1553 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1557 int tmp = in->i_buffer;
1559 p_header=out->p_buffer+12;
1569 memcpy( &out->p_buffer[12+latmhdrsize], p_data, i_payload );
1571 out->i_buffer = 12 + latmhdrsize + i_payload;
1572 out->i_dts = in->i_dts + i * in->i_length / i_count;
1573 out->i_length = in->i_length / i_count;
1575 rtp_packetize_send( id, out );
1577 p_data += i_payload;
1578 i_data -= i_payload;
1584 static int rtp_packetize_l16( sout_stream_t *p_stream, sout_stream_id_t *id,
1587 int i_max = id->i_mtu - 12; /* payload max in one packet */
1588 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1590 uint8_t *p_data = in->p_buffer;
1591 int i_data = in->i_buffer;
1596 int i_payload = (__MIN( i_max, i_data )/4)*4;
1597 block_t *out = block_New( p_stream, 12 + i_payload );
1599 /* rtp common header */
1600 rtp_packetize_common( id, out, 0,
1601 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1602 memcpy( &out->p_buffer[12], p_data, i_payload );
1604 out->i_buffer = 12 + i_payload;
1605 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1606 out->i_length = in->i_length / i_count;
1608 rtp_packetize_send( id, out );
1610 p_data += i_payload;
1611 i_data -= i_payload;
1618 static int rtp_packetize_l8( sout_stream_t *p_stream, sout_stream_id_t *id,
1621 int i_max = id->i_mtu - 12; /* payload max in one packet */
1622 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1624 uint8_t *p_data = in->p_buffer;
1625 int i_data = in->i_buffer;
1630 int i_payload = (__MIN( i_max, i_data )/2)*2;
1631 block_t *out = block_New( p_stream, 12 + i_payload );
1633 /* rtp common header */
1634 rtp_packetize_common( id, out, 0,
1635 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1636 memcpy( &out->p_buffer[12], p_data, i_payload );
1638 out->i_buffer = 12 + i_payload;
1639 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1640 out->i_length = in->i_length / i_count;
1642 rtp_packetize_send( id, out );
1644 p_data += i_payload;
1645 i_data -= i_payload;
1652 static int rtp_packetize_mp4a( sout_stream_t *p_stream, sout_stream_id_t *id,
1655 int i_max = id->i_mtu - 16; /* payload max in one packet */
1656 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1658 uint8_t *p_data = in->p_buffer;
1659 int i_data = in->i_buffer;
1662 for( i = 0; i < i_count; i++ )
1664 int i_payload = __MIN( i_max, i_data );
1665 block_t *out = block_New( p_stream, 16 + i_payload );
1667 /* rtp common header */
1668 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1669 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1671 /* AU headers length (bits) */
1672 out->p_buffer[12] = 0;
1673 out->p_buffer[13] = 2*8;
1674 /* for each AU length 13 bits + idx 3bits, */
1675 out->p_buffer[14] = ( in->i_buffer >> 5 )&0xff;
1676 out->p_buffer[15] = ( (in->i_buffer&0xff)<<3 )|0;
1678 memcpy( &out->p_buffer[16], p_data, i_payload );
1680 out->i_buffer = 16 + i_payload;
1681 out->i_dts = in->i_dts + i * in->i_length / i_count;
1682 out->i_length = in->i_length / i_count;
1684 rtp_packetize_send( id, out );
1686 p_data += i_payload;
1687 i_data -= i_payload;
1695 #define RTP_H263_HEADER_SIZE (2) // plen = 0
1696 #define RTP_H263_PAYLOAD_START (14) // plen = 0
1697 static int rtp_packetize_h263( sout_stream_t *p_stream, sout_stream_id_t *id,
1700 uint8_t *p_data = in->p_buffer;
1701 int i_data = in->i_buffer;
1703 int i_max = id->i_mtu - 12 - RTP_H263_HEADER_SIZE; /* payload max in one packet */
1706 int b_v_bit = 0; // no pesky error resilience
1707 int i_plen = 0; // normally plen=0 for PSC packet
1708 int i_pebit = 0; // because plen=0
1713 return VLC_EGENERIC;
1715 if( p_data[0] || p_data[1] )
1717 return VLC_EGENERIC;
1719 /* remove 2 leading 0 bytes */
1722 i_count = ( i_data + i_max - 1 ) / i_max;
1724 for( i = 0; i < i_count; i++ )
1726 int i_payload = __MIN( i_max, i_data );
1727 block_t *out = block_New( p_stream,
1728 RTP_H263_PAYLOAD_START + i_payload );
1729 b_p_bit = (i == 0) ? 1 : 0;
1730 h = ( b_p_bit << 10 )|
1735 /* rtp common header */
1736 //b_m_bit = 1; // always contains end of frame
1737 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1738 in->i_pts > 0 ? in->i_pts : in->i_dts );
1741 out->p_buffer[12] = ( h >> 8 )&0xff;
1742 out->p_buffer[13] = ( h )&0xff;
1743 memcpy( &out->p_buffer[RTP_H263_PAYLOAD_START], p_data, i_payload );
1745 out->i_buffer = RTP_H263_PAYLOAD_START + i_payload;
1746 out->i_dts = in->i_dts + i * in->i_length / i_count;
1747 out->i_length = in->i_length / i_count;
1749 rtp_packetize_send( id, out );
1751 p_data += i_payload;
1752 i_data -= i_payload;
1760 rtp_packetize_h264_nal( sout_stream_t *p_stream, sout_stream_id_t *id,
1761 const uint8_t *p_data, int i_data, int64_t i_pts,
1762 int64_t i_dts, vlc_bool_t b_last, int64_t i_length )
1764 const int i_max = id->i_mtu - 12; /* payload max in one packet */
1771 i_nal_hdr = p_data[3];
1772 i_nal_type = i_nal_hdr&0x1f;
1774 /* Skip start code */
1779 if( i_data <= i_max )
1781 /* Single NAL unit packet */
1782 block_t *out = block_New( p_stream, 12 + i_data );
1784 out->i_length = i_length;
1787 rtp_packetize_common( id, out, b_last, i_pts );
1788 out->i_buffer = 12 + i_data;
1790 memcpy( &out->p_buffer[12], p_data, i_data );
1792 rtp_packetize_send( id, out );
1796 /* FU-A Fragmentation Unit without interleaving */
1797 const int i_count = ( i_data-1 + i_max-2 - 1 ) / (i_max-2);
1803 for( i = 0; i < i_count; i++ )
1805 const int i_payload = __MIN( i_data, i_max-2 );
1806 block_t *out = block_New( p_stream, 12 + 2 + i_payload );
1807 out->i_dts = i_dts + i * i_length / i_count;
1808 out->i_length = i_length / i_count;
1811 rtp_packetize_common( id, out, (b_last && i_payload == i_data), i_pts );
1812 out->i_buffer = 14 + i_payload;
1815 out->p_buffer[12] = 0x00 | (i_nal_hdr & 0x60) | 28;
1817 out->p_buffer[13] = ( i == 0 ? 0x80 : 0x00 ) | ( (i == i_count-1) ? 0x40 : 0x00 ) | i_nal_type;
1818 memcpy( &out->p_buffer[14], p_data, i_payload );
1820 rtp_packetize_send( id, out );
1822 i_data -= i_payload;
1823 p_data += i_payload;
1829 static int rtp_packetize_h264( sout_stream_t *p_stream, sout_stream_id_t *id,
1832 const uint8_t *p_buffer = in->p_buffer;
1833 int i_buffer = in->i_buffer;
1835 while( i_buffer > 4 && ( p_buffer[0] != 0 || p_buffer[1] != 0 || p_buffer[2] != 1 ) )
1841 /* Split nal units */
1842 while( i_buffer > 4 )
1845 int i_size = i_buffer;
1846 int i_skip = i_buffer;
1848 /* search nal end */
1849 for( i_offset = 4; i_offset+2 < i_buffer ; i_offset++)
1851 if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 1 )
1853 /* we found another startcode */
1854 i_size = i_offset - ( p_buffer[i_offset-1] == 0 ? 1 : 0);
1859 /* TODO add STAP-A to remove a lot of overhead with small slice/sei/... */
1860 rtp_packetize_h264_nal( p_stream, id, p_buffer, i_size,
1861 (in->i_pts > 0 ? in->i_pts : in->i_dts), in->i_dts,
1862 (i_size >= i_buffer), in->i_length * i_size / in->i_buffer );
1870 static int rtp_packetize_amr( sout_stream_t *p_stream, sout_stream_id_t *id,
1873 int i_max = id->i_mtu - 14; /* payload max in one packet */
1874 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1876 uint8_t *p_data = in->p_buffer;
1877 int i_data = in->i_buffer;
1880 /* Only supports octet-aligned mode */
1881 for( i = 0; i < i_count; i++ )
1883 int i_payload = __MIN( i_max, i_data );
1884 block_t *out = block_New( p_stream, 14 + i_payload );
1886 /* rtp common header */
1887 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1888 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1889 /* Payload header */
1890 out->p_buffer[12] = 0xF0; /* CMR */
1891 out->p_buffer[13] = p_data[0]&0x7C; /* ToC */ /* FIXME: frame type */
1893 /* FIXME: are we fed multiple frames ? */
1894 memcpy( &out->p_buffer[14], p_data+1, i_payload-1 );
1896 out->i_buffer = 14 + i_payload-1;
1897 out->i_dts = in->i_dts + i * in->i_length / i_count;
1898 out->i_length = in->i_length / i_count;
1900 rtp_packetize_send( id, out );
1902 p_data += i_payload;
1903 i_data -= i_payload;
1909 /*****************************************************************************
1911 *****************************************************************************/
1913 /** Add an ES to a non-RTP muxed stream */
1914 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1916 sout_input_t *p_input;
1917 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1918 assert( p_mux != NULL );
1920 p_input = sout_MuxAddStream( p_mux, p_fmt );
1921 if( p_input == NULL )
1923 msg_Err( p_stream, "cannot add this stream to the muxer" );
1927 return (sout_stream_id_t *)p_input;
1931 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
1934 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1935 assert( p_mux != NULL );
1937 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
1942 /** Remove an ES from a non-RTP muxed stream */
1943 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
1945 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1946 assert( p_mux != NULL );
1948 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
1953 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
1954 const block_t *p_buffer )
1956 sout_stream_sys_t *p_sys = p_stream->p_sys;
1957 sout_stream_id_t *id = p_sys->es[0];
1959 int64_t i_dts = p_buffer->i_dts;
1961 uint8_t *p_data = p_buffer->p_buffer;
1962 unsigned int i_data = p_buffer->i_buffer;
1963 unsigned int i_max = id->i_mtu - 12;
1965 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
1969 unsigned int i_size;
1971 /* output complete packet */
1972 if( p_sys->packet &&
1973 p_sys->packet->i_buffer + i_data > i_max )
1975 rtp_packetize_send( id, p_sys->packet );
1976 p_sys->packet = NULL;
1979 if( p_sys->packet == NULL )
1981 /* allocate a new packet */
1982 p_sys->packet = block_New( p_stream, id->i_mtu );
1983 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
1984 p_sys->packet->i_dts = i_dts;
1985 p_sys->packet->i_length = p_buffer->i_length / i_packet;
1986 i_dts += p_sys->packet->i_length;
1989 i_size = __MIN( i_data,
1990 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
1992 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
1995 p_sys->packet->i_buffer += i_size;
2004 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
2007 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
2013 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
2015 p_next = p_buffer->p_next;
2016 block_Release( p_buffer );
2024 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
2026 sout_access_out_t *p_grab;
2028 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
2029 if( p_grab == NULL )
2032 p_grab->p_module = NULL;
2033 p_grab->p_sout = p_stream->p_sout;
2034 p_grab->psz_access = strdup( "grab" );
2035 p_grab->p_cfg = NULL;
2036 p_grab->psz_path = strdup( "" );
2037 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
2038 p_grab->pf_seek = NULL;
2039 p_grab->pf_write = AccessOutGrabberWrite;