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>
42 # include <sys/types.h>
45 # include <sys/stat.h>
50 /*****************************************************************************
52 *****************************************************************************/
54 #define DST_TEXT N_("Destination")
55 #define DST_LONGTEXT N_( \
56 "This is the output URL that will be used." )
57 #define SDP_TEXT N_("SDP")
58 #define SDP_LONGTEXT N_( \
59 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
60 "session will be made available. You must use an url: http://location to " \
61 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
62 "for the SDP to be announced via SAP." )
63 #define MUX_TEXT N_("Muxer")
64 #define MUX_LONGTEXT N_( \
65 "This allows you to specify the muxer used for the streaming output. " \
66 "Default is to use no muxer (standard RTP stream)." )
68 #define NAME_TEXT N_("Session name")
69 #define NAME_LONGTEXT N_( \
70 "This is the name of the session that will be announced in the SDP " \
71 "(Session Descriptor)." )
72 #define DESC_TEXT N_("Session description")
73 #define DESC_LONGTEXT N_( \
74 "This allows you to give a broader description of the stream, that will " \
75 "be announced in the SDP (Session Descriptor)." )
76 #define URL_TEXT N_("Session URL")
77 #define URL_LONGTEXT N_( \
78 "This allows you to give an URL with more details about the stream " \
79 "(often the website of the streaming organization), that will " \
80 "be announced in the SDP (Session Descriptor)." )
81 #define EMAIL_TEXT N_("Session email")
82 #define EMAIL_LONGTEXT N_( \
83 "This allows you to give a contact mail address for the stream, that will " \
84 "be announced in the SDP (Session Descriptor)." )
85 #define PORT_TEXT N_("Port")
86 #define PORT_LONGTEXT N_( \
87 "This allows you to specify the base port for the RTP streaming." )
88 #define PORT_AUDIO_TEXT N_("Audio port")
89 #define PORT_AUDIO_LONGTEXT N_( \
90 "This allows you to specify the default audio port for the RTP streaming." )
91 #define PORT_VIDEO_TEXT N_("Video port")
92 #define PORT_VIDEO_LONGTEXT N_( \
93 "This allows you to specify the default video port for the RTP streaming." )
95 #define TTL_TEXT N_("Hop limit (TTL)")
96 #define TTL_LONGTEXT N_( \
97 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
98 "the multicast packets sent by the stream output (0 = use operating " \
99 "system built-in default).")
101 #define DCCP_TEXT N_("DCCP transport")
102 #define DCCP_LONGTEXT N_( \
103 "This enables DCCP instead of UDP as a transport for RTP." )
104 #define TCP_TEXT N_("TCP transport")
105 #define TCP_LONGTEXT N_( \
106 "This enables TCP instead of UDP as a transport for RTP." )
107 #define UDP_LITE_TEXT N_("UDP-Lite transport")
108 #define UDP_LITE_LONGTEXT N_( \
109 "This enables UDP-Lite instead of UDP as a transport for RTP." )
111 #define RFC3016_TEXT N_("MP4A LATM")
112 #define RFC3016_LONGTEXT N_( \
113 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
115 static int Open ( vlc_object_t * );
116 static void Close( vlc_object_t * );
118 #define SOUT_CFG_PREFIX "sout-rtp-"
119 #define MAX_EMPTY_BLOCKS 200
122 set_shortname( _("RTP"));
123 set_description( _("RTP stream output") );
124 set_capability( "sout stream", 0 );
125 add_shortcut( "rtp" );
126 set_category( CAT_SOUT );
127 set_subcategory( SUBCAT_SOUT_STREAM );
129 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DST_TEXT,
130 DST_LONGTEXT, VLC_TRUE );
131 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
132 SDP_LONGTEXT, VLC_TRUE );
133 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
134 MUX_LONGTEXT, VLC_TRUE );
136 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
137 NAME_LONGTEXT, VLC_TRUE );
138 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
139 DESC_LONGTEXT, VLC_TRUE );
140 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
141 URL_LONGTEXT, VLC_TRUE );
142 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
143 EMAIL_LONGTEXT, VLC_TRUE );
145 add_integer( SOUT_CFG_PREFIX "port", 1234, NULL, PORT_TEXT,
146 PORT_LONGTEXT, VLC_TRUE );
147 add_integer( SOUT_CFG_PREFIX "port-audio", 1230, NULL, PORT_AUDIO_TEXT,
148 PORT_AUDIO_LONGTEXT, VLC_TRUE );
149 add_integer( SOUT_CFG_PREFIX "port-video", 1232, NULL, PORT_VIDEO_TEXT,
150 PORT_VIDEO_LONGTEXT, VLC_TRUE );
152 add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
153 TTL_LONGTEXT, VLC_TRUE );
155 add_bool( SOUT_CFG_PREFIX "dccp", 0, NULL,
156 DCCP_TEXT, DCCP_LONGTEXT, VLC_FALSE );
157 add_bool( SOUT_CFG_PREFIX "tcp", 0, NULL,
158 TCP_TEXT, TCP_LONGTEXT, VLC_FALSE );
159 add_bool( SOUT_CFG_PREFIX "udplite", 0, NULL,
160 UDP_LITE_TEXT, UDP_LITE_LONGTEXT, VLC_FALSE );
162 add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
163 RFC3016_LONGTEXT, VLC_FALSE );
165 set_callbacks( Open, Close );
168 /*****************************************************************************
169 * Exported prototypes
170 *****************************************************************************/
171 static const char *ppsz_sout_options[] = {
172 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
173 "description", "url", "email",
174 "dccp", "tcp", "udplite",
178 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
179 static int Del ( sout_stream_t *, sout_stream_id_t * );
180 static int Send( sout_stream_t *, sout_stream_id_t *,
182 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
183 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
184 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
187 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
188 static void ThreadSend( vlc_object_t *p_this );
190 static void SDPHandleUrl( sout_stream_t *, char * );
192 static int SapSetup( sout_stream_t *p_stream );
193 static int FileSetup( sout_stream_t *p_stream );
194 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t * );
196 struct sout_stream_sys_t
202 vlc_mutex_t lock_sdp;
204 char *psz_session_name;
205 char *psz_session_description;
206 char *psz_session_url;
207 char *psz_session_email;
210 vlc_bool_t b_export_sdp_file;
214 vlc_bool_t b_export_sap;
215 session_descriptor_t *p_session;
218 httpd_host_t *p_httpd_host;
219 httpd_file_t *p_httpd_file;
225 char *psz_destination;
229 uint16_t i_port_audio;
230 uint16_t i_port_video;
233 /* when need to use a private one or when using muxer */
236 /* in case we do TS/PS over rtp */
238 sout_access_out_t *p_grab;
244 sout_stream_id_t **es;
247 typedef int (*pf_rtp_packetizer_t)( sout_stream_t *, sout_stream_id_t *,
250 typedef struct rtp_sink_t
256 struct sout_stream_id_t
260 sout_stream_t *p_stream;
262 uint32_t i_timestamp_start;
264 uint8_t i_payload_type;
275 /* Packetizer specific fields */
276 pf_rtp_packetizer_t pf_packetize;
280 vlc_mutex_t lock_sink;
283 rtsp_stream_id_t *rtsp_id;
285 block_fifo_t *p_fifo;
290 /*****************************************************************************
292 *****************************************************************************/
293 static int Open( vlc_object_t *p_this )
295 sout_stream_t *p_stream = (sout_stream_t*)p_this;
296 sout_instance_t *p_sout = p_stream->p_sout;
297 sout_stream_sys_t *p_sys = NULL;
298 config_chain_t *p_cfg = NULL;
300 vlc_bool_t b_rtsp = VLC_FALSE;
302 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
303 ppsz_sout_options, p_stream->p_cfg );
305 p_sys = malloc( sizeof( sout_stream_sys_t ) );
309 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
310 p_sys->psz_session_name = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "name" );
311 p_sys->psz_session_description = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "description" );
312 p_sys->psz_session_url = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "url" );
313 p_sys->psz_session_email = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "email" );
315 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
316 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
317 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
319 p_sys->psz_sdp_file = NULL;
321 if( p_sys->i_port_audio == p_sys->i_port_video )
323 msg_Err( p_stream, "audio and video port cannot be the same" );
324 p_sys->i_port_audio = 0;
325 p_sys->i_port_video = 0;
328 if( !p_sys->psz_session_name )
330 if( p_sys->psz_destination )
331 p_sys->psz_session_name = strdup( p_sys->psz_destination );
333 p_sys->psz_session_name = strdup( "NONE" );
336 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
338 if( !strcmp( p_cfg->psz_name, "sdp" )
339 && ( p_cfg->psz_value != NULL )
340 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
348 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
351 if( !strncasecmp( psz, "rtsp:", 5 ) )
357 /* Transport protocol */
358 p_sys->proto = IPPROTO_UDP;
361 if( var_GetBool( p_stream, SOUT_CFG_PREFIX "dccp" ) )
363 p_sys->sotype = SOCK_DCCP;
364 p_sys->proto = 33 /*IPPROTO_DCCP*/;
367 if( var_GetBool( p_stream, SOUT_CFG_PREFIX "tcp" ) )
369 p_sys->sotype = SOCK_STREAM;
370 p_sys->proto = IPPROTO_TCP;
374 if( var_GetBool( p_stream, SOUT_CFG_PREFIX "udplite" ) )
375 p_sys->proto = 136 /*IPPROTO_UDPLITE*/;
377 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
379 msg_Err( p_stream, "missing destination and not in RTSP mode" );
384 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
385 if( p_sys->i_ttl == 0 )
387 /* Normally, we should let the default hop limit up to the core,
388 * but we have to know it to build our SDP properly, which is why
389 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
391 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
394 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
396 p_sys->i_payload_type = 96;
400 p_sys->psz_sdp = NULL;
402 p_sys->i_sdp_id = mdate();
403 p_sys->i_sdp_version = 1;
404 p_sys->psz_sdp = NULL;
406 p_sys->b_export_sap = VLC_FALSE;
407 p_sys->b_export_sdp_file = VLC_FALSE;
408 p_sys->p_session = NULL;
410 p_sys->p_httpd_host = NULL;
411 p_sys->p_httpd_file = NULL;
413 p_stream->p_sys = p_sys;
415 vlc_mutex_init( p_stream, &p_sys->lock_sdp );
416 vlc_mutex_init( p_stream, &p_sys->lock_es );
418 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
421 sout_stream_id_t *id;
422 const char *psz_rtpmap;
425 /* Check muxer type */
426 if( !strncasecmp( psz, "ps", 2 )
427 || !strncasecmp( psz, "mpeg1", 5 ) )
429 psz_rtpmap = "MP2P/90000";
431 else if( !strncasecmp( psz, "ts", 2 ) )
433 psz_rtpmap = "MP2T/90000";
438 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
440 vlc_mutex_destroy( &p_sys->lock_sdp );
441 vlc_mutex_destroy( &p_sys->lock_es );
446 p_sys->p_grab = GrabberCreate( p_stream );
447 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
450 if( p_sys->p_mux == NULL )
452 msg_Err( p_stream, "cannot create muxer" );
453 sout_AccessOutDelete( p_sys->p_grab );
454 vlc_mutex_destroy( &p_sys->lock_sdp );
455 vlc_mutex_destroy( &p_sys->lock_es );
460 id = Add( p_stream, NULL );
463 sout_MuxDelete( p_sys->p_mux );
464 sout_AccessOutDelete( p_sys->p_grab );
465 vlc_mutex_destroy( &p_sys->lock_sdp );
466 vlc_mutex_destroy( &p_sys->lock_es );
471 id->psz_rtpmap = strdup( psz_rtpmap );
472 id->i_payload_type = i_payload_type;
474 p_sys->packet = NULL;
476 p_stream->pf_add = MuxAdd;
477 p_stream->pf_del = MuxDel;
478 p_stream->pf_send = MuxSend;
483 p_sys->p_grab = NULL;
485 p_stream->pf_add = Add;
486 p_stream->pf_del = Del;
487 p_stream->pf_send = Send;
490 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
493 config_chain_t *p_cfg;
495 SDPHandleUrl( p_stream, psz );
497 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
499 if( !strcmp( p_cfg->psz_name, "sdp" ) )
501 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
504 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
505 if( !strcmp( p_cfg->psz_value, psz ) )
508 SDPHandleUrl( p_stream, p_cfg->psz_value );
514 /* update p_sout->i_out_pace_nocontrol */
515 p_stream->p_sout->i_out_pace_nocontrol++;
520 /*****************************************************************************
522 *****************************************************************************/
523 static void Close( vlc_object_t * p_this )
525 sout_stream_t *p_stream = (sout_stream_t*)p_this;
526 sout_stream_sys_t *p_sys = p_stream->p_sys;
528 /* update p_sout->i_out_pace_nocontrol */
529 p_stream->p_sout->i_out_pace_nocontrol--;
533 assert( p_sys->i_es == 1 );
534 Del( p_stream, p_sys->es[0] );
536 sout_MuxDelete( p_sys->p_mux );
537 sout_AccessOutDelete( p_sys->p_grab );
540 block_Release( p_sys->packet );
542 if( p_sys->b_export_sap )
545 SapSetup( p_stream );
549 if( p_sys->rtsp != NULL )
550 RtspUnsetup( p_sys->rtsp );
552 vlc_mutex_destroy( &p_sys->lock_sdp );
553 vlc_mutex_destroy( &p_sys->lock_es );
555 if( p_sys->p_httpd_file )
556 httpd_FileDelete( p_sys->p_httpd_file );
558 if( p_sys->p_httpd_host )
559 httpd_HostDelete( p_sys->p_httpd_host );
561 free( p_sys->psz_session_name );
562 free( p_sys->psz_session_description );
563 free( p_sys->psz_session_url );
564 free( p_sys->psz_session_email );
565 free( p_sys->psz_sdp );
567 if( p_sys->b_export_sdp_file )
570 unlink( p_sys->psz_sdp_file );
572 free( p_sys->psz_sdp_file );
574 free( p_sys->psz_destination );
578 /*****************************************************************************
580 *****************************************************************************/
581 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
583 sout_stream_sys_t *p_sys = p_stream->p_sys;
586 vlc_UrlParse( &url, psz_url, 0 );
587 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
589 if( p_sys->p_httpd_file )
591 msg_Err( p_stream, "you can use sdp=http:// only once" );
595 if( HttpSetup( p_stream, &url ) )
597 msg_Err( p_stream, "cannot export SDP as HTTP" );
600 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
602 if( p_sys->rtsp != NULL )
604 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
608 /* FIXME test if destination is multicast or no destination at all */
609 p_sys->rtsp = RtspSetup( p_stream, &url );
610 if( p_sys->rtsp == NULL )
612 msg_Err( p_stream, "cannot export SDP as RTSP" );
615 if( p_sys->p_mux != NULL )
617 sout_stream_id_t *id = p_sys->es[0];
618 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0,
619 p_sys->psz_destination, p_sys->i_ttl,
620 id->i_port, id->i_port + 1 );
623 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
624 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
626 p_sys->b_export_sap = VLC_TRUE;
627 SapSetup( p_stream );
629 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
631 if( p_sys->b_export_sdp_file )
633 msg_Err( p_stream, "you can use sdp=file:// only once" );
636 p_sys->b_export_sdp_file = VLC_TRUE;
637 psz_url = &psz_url[5];
638 if( psz_url[0] == '/' && psz_url[1] == '/' )
640 p_sys->psz_sdp_file = strdup( psz_url );
644 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
649 vlc_UrlClean( &url );
652 /*****************************************************************************
654 *****************************************************************************/
655 /* FIXME http://www.faqs.org/rfcs/rfc2327.html
656 All text fields should be UTF-8 encoded. Use global a:charset to announce this.
657 o= - should be local username (no spaces allowed)
658 o= time should be hashed with some other value to garantue uniqueness
659 o= we need IP6 support?
660 o= don't use the localhost address. use fully qualified domain name or IP4 address
661 p= international phone number (pass via vars?)
663 a= recvonly (missing)
664 a= type:broadcast (missing)
665 a= charset: (normally charset should be UTF-8, this can be used to override s= and i=)
666 a= x-plgroup: (missing)
667 RTP packets need to get the correct src IP address */
669 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
671 const sout_stream_sys_t *p_sys = p_stream->p_sys;
673 struct sockaddr_storage dst;
677 * When we have a fixed destination (typically when we do multicast),
678 * we need to put the actual port numbers in the SDP.
679 * When there is no fixed destination, we only support RTSP unicast
680 * on-demand setup, so we should rather let the clients decide which ports
682 * When there is both a fixed destination and RTSP unicast, we need to
683 * put port numbers used by the fixed destination, otherwise the SDP would
684 * become totally incorrect for multicast use. It should be noted that
685 * port numbers from SDP with RTSP are only "recommendation" from the
686 * server to the clients (per RFC2326), so only broken clients will fail
687 * to handle this properly. There is no solution but to use two differents
688 * output chain with two different RTSP URLs if you need to handle this
693 if( p_sys->psz_destination != NULL )
697 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
698 dstlen = sizeof( dst );
699 getsockname( p_sys->es[0]->sinkv[0].rtp_fd, (struct sockaddr *)&dst,
706 /* Dummy destination address for RTSP */
707 memset (&dst, 0, sizeof( struct sockaddr_in ) );
708 dst.ss_family = AF_INET;
712 dstlen = sizeof( struct sockaddr_in );
715 psz_sdp = sdp_Start( p_sys->psz_session_name,
716 p_sys->psz_session_description,
717 p_sys->psz_session_url, p_sys->psz_session_email,
718 NULL, NULL, 0, (struct sockaddr *)&dst, dstlen );
719 if( psz_sdp == NULL )
722 /* TODO: a=source-filter */
724 /* FIXME: locking?! */
725 for( i = 0; i < p_sys->i_es; i++ )
727 sout_stream_id_t *id = p_sys->es[i];
728 const char *mime_major; /* major MIME type */
730 if( id->i_cat == AUDIO_ES )
731 mime_major = "audio";
733 if( id->i_cat == VIDEO_ES )
734 mime_major = "video";
738 sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", inclport * id->i_port,
739 id->i_payload_type, VLC_FALSE, id->i_bitrate,
740 id->psz_rtpmap, id->psz_fmtp);
745 p += sprintf(p,"b=AS:%d\r\n",id->i_bitrate);
749 if( rtsp_url != NULL )
750 sdp_AddAttribute ( &psz_sdp, "control", "/trackID=%d", i );
756 /*****************************************************************************
758 *****************************************************************************/
759 static int rtp_packetize_l16 ( sout_stream_t *, sout_stream_id_t *, block_t * );
760 static int rtp_packetize_l8 ( sout_stream_t *, sout_stream_id_t *, block_t * );
761 static int rtp_packetize_mpa ( sout_stream_t *, sout_stream_id_t *, block_t * );
762 static int rtp_packetize_mpv ( sout_stream_t *, sout_stream_id_t *, block_t * );
763 static int rtp_packetize_ac3 ( sout_stream_t *, sout_stream_id_t *, block_t * );
764 static int rtp_packetize_split( sout_stream_t *, sout_stream_id_t *, block_t * );
765 static int rtp_packetize_mp4a ( sout_stream_t *, sout_stream_id_t *, block_t * );
766 static int rtp_packetize_mp4a_latm ( sout_stream_t *, sout_stream_id_t *, block_t * );
767 static int rtp_packetize_h263 ( sout_stream_t *, sout_stream_id_t *, block_t * );
768 static int rtp_packetize_h264 ( sout_stream_t *, sout_stream_id_t *, block_t * );
769 static int rtp_packetize_amr ( sout_stream_t *, sout_stream_id_t *, block_t * );
771 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
773 static const char hex[16] = "0123456789abcdef";
776 for( i = 0; i < i_data; i++ )
778 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
779 s[2*i+1] = hex[(p_data[i] )&0xf];
785 /** Add an ES as a new RTP stream */
786 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
788 /* NOTE: As a special case, if we use a non-RTP
789 * mux (TS/PS), then p_fmt is NULL. */
790 sout_stream_sys_t *p_sys = p_stream->p_sys;
791 sout_stream_id_t *id;
792 int i_port, cscov = -1;
795 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
799 /* Choose the port */
804 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
806 i_port = p_sys->i_port_audio;
807 p_sys->i_port_audio = 0;
810 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
812 i_port = p_sys->i_port_video;
813 p_sys->i_port_video = 0;
818 if( p_sys->i_port != p_sys->i_port_audio
819 && p_sys->i_port != p_sys->i_port_video )
821 i_port = p_sys->i_port;
828 id->p_stream = p_stream;
830 id->i_timestamp_start = rand()&0xffffffff;
831 id->i_sequence = rand()&0xffff;
832 id->i_payload_type = p_sys->i_payload_type;
833 id->ssrc[0] = rand()&0xff;
834 id->ssrc[1] = rand()&0xff;
835 id->ssrc[2] = rand()&0xff;
836 id->ssrc[3] = rand()&0xff;
838 id->psz_rtpmap = NULL;
840 id->i_clock_rate = 90000; /* most common case */
844 id->i_cat = p_fmt->i_cat;
845 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
849 id->i_cat = VIDEO_ES;
853 id->pf_packetize = NULL;
854 id->i_mtu = config_GetInt( p_stream, "mtu" );
855 if( id->i_mtu <= 12 + 16 )
856 id->i_mtu = 576 - 20 - 8; /* pessimistic */
858 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
860 vlc_mutex_init( p_stream, &id->lock_sink );
866 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
867 id->p_fifo = block_FifoNew( p_stream );
869 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
870 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
872 vlc_mutex_destroy( &id->lock_sink );
873 vlc_object_destroy( id );
877 if( p_sys->psz_destination != NULL )
879 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
880 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
881 i_port, ttl, p_sys->proto );
885 msg_Err( p_stream, "cannot create RTP socket" );
886 vlc_thread_join( id );
887 vlc_mutex_destroy( &id->lock_sink );
888 vlc_object_destroy( id );
891 rtp_add_sink( id, fd );
897 switch( p_fmt->i_codec )
899 case VLC_FOURCC( 's', '1', '6', 'b' ):
900 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
902 id->i_payload_type = 11;
904 else if( p_fmt->audio.i_channels == 2 &&
905 p_fmt->audio.i_rate == 44100 )
907 id->i_payload_type = 10;
909 if( asprintf( &id->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
910 p_fmt->audio.i_channels ) == -1 )
911 id->psz_rtpmap = NULL;
912 id->i_clock_rate = p_fmt->audio.i_rate;
913 id->pf_packetize = rtp_packetize_l16;
915 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
916 if( asprintf( &id->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
917 p_fmt->audio.i_channels ) == -1 )
918 id->psz_rtpmap = NULL;
919 id->i_clock_rate = p_fmt->audio.i_rate;
920 id->pf_packetize = rtp_packetize_l8;
922 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
923 id->i_payload_type = 14;
924 id->psz_rtpmap = strdup( "MPA/90000" );
925 id->pf_packetize = rtp_packetize_mpa;
927 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
928 id->i_payload_type = 32;
929 id->psz_rtpmap = strdup( "MPV/90000" );
930 id->pf_packetize = rtp_packetize_mpv;
932 case VLC_FOURCC( 'a', '5', '2', ' ' ):
933 id->psz_rtpmap = strdup( "ac3/90000" );
934 id->pf_packetize = rtp_packetize_ac3;
936 case VLC_FOURCC( 'H', '2', '6', '3' ):
937 id->psz_rtpmap = strdup( "H263-1998/90000" );
938 id->pf_packetize = rtp_packetize_h263;
940 case VLC_FOURCC( 'h', '2', '6', '4' ):
941 id->psz_rtpmap = strdup( "H264/90000" );
942 id->pf_packetize = rtp_packetize_h264;
945 if( p_fmt->i_extra > 0 )
947 uint8_t *p_buffer = p_fmt->p_extra;
948 int i_buffer = p_fmt->i_extra;
949 char *p_64_sps = NULL;
950 char *p_64_pps = NULL;
953 while( i_buffer > 4 &&
954 p_buffer[0] == 0 && p_buffer[1] == 0 &&
955 p_buffer[2] == 0 && p_buffer[3] == 1 )
957 const int i_nal_type = p_buffer[4]&0x1f;
961 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
964 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
966 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
968 /* we found another startcode */
973 if( i_nal_type == 7 )
975 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
976 sprintf_hexa( hexa, &p_buffer[5], 3 );
978 else if( i_nal_type == 8 )
980 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
986 if( p_64_sps && p_64_pps &&
987 ( asprintf( &id->psz_fmtp,
988 "packetization-mode=1;profile-level-id=%s;"
989 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
996 id->psz_fmtp = strdup( "packetization-mode=1" );
999 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1001 char hexa[2*p_fmt->i_extra +1];
1003 id->psz_rtpmap = strdup( "MP4V-ES/90000" );
1004 id->pf_packetize = rtp_packetize_split;
1005 if( p_fmt->i_extra > 0 )
1007 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1008 if( asprintf( &id->psz_fmtp,
1009 "profile-level-id=3; config=%s;", hexa ) == -1 )
1010 id->psz_fmtp = NULL;
1014 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1016 id->i_clock_rate = p_fmt->audio.i_rate;
1020 char hexa[2*p_fmt->i_extra +1];
1022 if( asprintf( &id->psz_rtpmap, "mpeg4-generic/%d",
1023 p_fmt->audio.i_rate ) == -1 )
1024 id->psz_rtpmap = NULL;
1025 id->pf_packetize = rtp_packetize_mp4a;
1026 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1027 if( asprintf( &id->psz_fmtp,
1028 "streamtype=5; profile-level-id=15; "
1029 "mode=AAC-hbr; config=%s; SizeLength=13; "
1030 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1032 id->psz_fmtp = NULL;
1038 unsigned char config[6];
1039 unsigned int aacsrates[15] = {
1040 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1041 16000, 12000, 11025, 8000, 7350, 0, 0 };
1043 for( i = 0; i < 15; i++ )
1044 if( p_fmt->audio.i_rate == aacsrates[i] )
1050 config[3]=p_fmt->audio.i_channels<<4;
1054 if( asprintf( &id->psz_rtpmap, "MP4A-LATM/%d/%d",
1055 p_fmt->audio.i_rate,
1056 p_fmt->audio.i_channels ) == -1)
1057 id->psz_rtpmap = NULL;
1058 id->pf_packetize = rtp_packetize_mp4a_latm;
1059 sprintf_hexa( hexa, config, 6 );
1060 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1061 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1062 id->psz_fmtp = NULL;
1066 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1067 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1068 "AMR/8000/2" : "AMR/8000" );
1069 id->psz_fmtp = strdup( "octet-align=1" );
1070 id->i_clock_rate = p_fmt->audio.i_rate;
1071 id->pf_packetize = rtp_packetize_amr;
1073 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1074 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1075 "AMR-WB/16000/2" : "AMR-WB/16000" );
1076 id->psz_fmtp = strdup( "octet-align=1" );
1077 id->i_clock_rate = p_fmt->audio.i_rate;
1078 id->pf_packetize = rtp_packetize_amr;
1082 msg_Err( p_stream, "cannot add this stream (unsupported "
1083 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1085 rtp_del_sink( id, id->sinkv[0].rtp_fd );
1086 vlc_thread_join( id );
1087 vlc_mutex_destroy( &id->lock_sink );
1088 vlc_object_destroy( id );
1093 cscov += 8 /* UDP */ + 12 /* RTP */;
1095 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1097 if( id->i_payload_type == p_sys->i_payload_type )
1098 p_sys->i_payload_type++;
1100 if( p_sys->rtsp != NULL )
1101 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1102 p_sys->psz_destination,
1103 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1105 /* Update p_sys context */
1106 vlc_mutex_lock( &p_sys->lock_es );
1107 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1108 vlc_mutex_unlock( &p_sys->lock_es );
1110 psz_sdp = SDPGenerate( p_stream, NULL );
1112 vlc_mutex_lock( &p_sys->lock_sdp );
1113 free( p_sys->psz_sdp );
1114 p_sys->psz_sdp = psz_sdp;
1115 vlc_mutex_unlock( &p_sys->lock_sdp );
1117 p_sys->i_sdp_version++;
1119 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1121 /* Update SDP (sap/file) */
1122 if( p_sys->b_export_sap ) SapSetup( p_stream );
1123 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1125 vlc_object_attach( id, p_stream );
1129 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1131 sout_stream_sys_t *p_sys = p_stream->p_sys;
1133 vlc_object_kill( id );
1135 vlc_mutex_lock( &p_sys->lock_es );
1136 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1137 vlc_mutex_unlock( &p_sys->lock_es );
1140 if( id->i_port > 0 )
1142 if( id->i_cat == AUDIO_ES && p_sys->i_port_audio == 0 )
1143 p_sys->i_port_audio = id->i_port;
1144 else if( id->i_cat == VIDEO_ES && p_sys->i_port_video == 0 )
1145 p_sys->i_port_video = id->i_port;
1148 free( id->psz_rtpmap );
1149 free( id->psz_fmtp );
1152 RtspDelId( p_sys->rtsp, id->rtsp_id );
1154 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1156 vlc_thread_join( id );
1157 vlc_mutex_destroy( &id->lock_sink );
1158 block_FifoRelease( id->p_fifo );
1160 /* Update SDP (sap/file) */
1161 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1162 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1164 vlc_object_detach( id );
1165 vlc_object_destroy( id );
1169 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1174 assert( p_stream->p_sys->p_mux == NULL );
1176 while( p_buffer != NULL )
1178 p_next = p_buffer->p_next;
1179 if( id->pf_packetize( p_stream, id, p_buffer ) )
1182 block_Release( p_buffer );
1188 /****************************************************************************
1190 ****************************************************************************/
1191 static int SapSetup( sout_stream_t *p_stream )
1193 sout_stream_sys_t *p_sys = p_stream->p_sys;
1194 sout_instance_t *p_sout = p_stream->p_sout;
1195 announce_method_t *p_method = sout_SAPMethod();
1197 /* Remove the previous session */
1198 if( p_sys->p_session != NULL)
1200 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1201 sout_AnnounceSessionDestroy( p_sys->p_session );
1202 p_sys->p_session = NULL;
1205 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1207 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout, SOUT_CFG_PREFIX,
1209 p_sys->psz_destination,
1213 sout_MethodRelease( p_method );
1217 /****************************************************************************
1219 ****************************************************************************/
1220 static int FileSetup( sout_stream_t *p_stream )
1222 sout_stream_sys_t *p_sys = p_stream->p_sys;
1225 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1227 msg_Err( p_stream, "cannot open file '%s' (%s)",
1228 p_sys->psz_sdp_file, strerror(errno) );
1229 return VLC_EGENERIC;
1232 fputs( p_sys->psz_sdp, f );
1238 /****************************************************************************
1240 ****************************************************************************/
1241 static int HttpCallback( httpd_file_sys_t *p_args,
1242 httpd_file_t *, uint8_t *p_request,
1243 uint8_t **pp_data, int *pi_data );
1245 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t *url)
1247 sout_stream_sys_t *p_sys = p_stream->p_sys;
1249 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1250 url->i_port > 0 ? url->i_port : 80 );
1251 if( p_sys->p_httpd_host )
1253 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1254 url->psz_path ? url->psz_path : "/",
1257 HttpCallback, (void*)p_sys );
1259 if( p_sys->p_httpd_file == NULL )
1261 return VLC_EGENERIC;
1266 static int HttpCallback( httpd_file_sys_t *p_args,
1267 httpd_file_t *f, uint8_t *p_request,
1268 uint8_t **pp_data, int *pi_data )
1270 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1272 vlc_mutex_lock( &p_sys->lock_sdp );
1273 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1275 *pi_data = strlen( p_sys->psz_sdp );
1276 *pp_data = malloc( *pi_data );
1277 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1284 vlc_mutex_unlock( &p_sys->lock_sdp );
1289 /****************************************************************************
1291 ****************************************************************************/
1292 static void ThreadSend( vlc_object_t *p_this )
1294 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1295 unsigned i_caching = id->i_caching;
1297 int fd[5] = { -1, -1, -1, -1, -1 };
1305 fd[4] = open( "/dev/null", O_WRONLY );
1310 block_t *out = block_FifoGet( id->p_fifo );
1311 mtime_t i_date = out->i_dts + i_caching;
1312 ssize_t len = out->i_buffer;
1316 len = write( fd[1], out->p_buffer, len);
1318 continue; /* Uho - should not happen */
1322 vlc_mutex_lock( &id->lock_sink );
1323 for( int i = 0; i < id->sinkc; i++ )
1325 SendRTCP( id->sinkv[i].rtcp, out );
1328 tee( fd[0], fd[3], len, 0 );
1329 if( splice( fd[2], NULL, id->sinkv[i].rtp_fd, NULL, len,
1330 SPLICE_F_NONBLOCK ) >= 0 )
1334 splice( fd[2], NULL, fd[4], NULL, len, 0 );
1336 send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 );
1338 vlc_mutex_unlock( &id->lock_sink );
1340 block_Release( out );
1342 splice( fd[0], NULL, fd[4], NULL, len, 0 );
1347 for( unsigned i = 0; i < 5; i++ )
1352 static inline void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1354 block_FifoPut( id->p_fifo, out );
1357 int rtp_add_sink( sout_stream_id_t *id, int fd )
1359 rtp_sink_t sink = { fd, NULL };
1360 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP );
1361 if( sink.rtcp == NULL )
1362 msg_Err( id, "RTCP failed!" );
1364 vlc_mutex_lock( &id->lock_sink );
1365 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1366 vlc_mutex_unlock( &id->lock_sink );
1370 void rtp_del_sink( sout_stream_id_t *id, int fd )
1372 rtp_sink_t sink = { fd, NULL };
1374 /* NOTE: must be safe to use if fd is not included */
1375 vlc_mutex_lock( &id->lock_sink );
1376 for( int i = 0; i < id->sinkc; i++ )
1378 if (id->sinkv[i].rtp_fd == fd)
1380 sink = id->sinkv[i];
1381 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1385 vlc_mutex_unlock( &id->lock_sink );
1387 CloseRTCP( sink.rtcp );
1388 net_Close( sink.rtp_fd );
1391 /****************************************************************************
1393 ****************************************************************************/
1394 static void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1395 int b_marker, int64_t i_pts )
1397 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / I64C(1000000);
1399 out->p_buffer[0] = 0x80;
1400 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1401 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1402 out->p_buffer[3] = ( id->i_sequence )&0xff;
1403 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1404 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1405 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1406 out->p_buffer[7] = ( i_timestamp )&0xff;
1408 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1414 static int rtp_packetize_mpa( sout_stream_t *p_stream, sout_stream_id_t *id,
1417 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1418 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1420 uint8_t *p_data = in->p_buffer;
1421 int i_data = in->i_buffer;
1424 for( i = 0; i < i_count; i++ )
1426 int i_payload = __MIN( i_max, i_data );
1427 block_t *out = block_New( p_stream, 16 + i_payload );
1429 /* rtp common header */
1430 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1432 out->p_buffer[12] = 0;
1433 out->p_buffer[13] = 0;
1434 /* fragment offset in the current frame */
1435 out->p_buffer[14] = ( (i*i_max) >> 8 )&0xff;
1436 out->p_buffer[15] = ( (i*i_max) )&0xff;
1437 memcpy( &out->p_buffer[16], p_data, i_payload );
1439 out->i_buffer = 16 + i_payload;
1440 out->i_dts = in->i_dts + i * in->i_length / i_count;
1441 out->i_length = in->i_length / i_count;
1443 rtp_packetize_send( id, out );
1445 p_data += i_payload;
1446 i_data -= i_payload;
1453 static int rtp_packetize_mpv( sout_stream_t *p_stream, sout_stream_id_t *id,
1456 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1457 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1459 uint8_t *p_data = in->p_buffer;
1460 int i_data = in->i_buffer;
1462 int b_sequence_start = 0;
1463 int i_temporal_ref = 0;
1464 int i_picture_coding_type = 0;
1465 int i_fbv = 0, i_bfc = 0, i_ffv = 0, i_ffc = 0;
1466 int b_start_slice = 0;
1468 /* preparse this packet to get some info */
1469 if( in->i_buffer > 4 )
1471 uint8_t *p = p_data;
1472 int i_rest = in->i_buffer;
1476 while( i_rest > 4 &&
1477 ( p[0] != 0x00 || p[1] != 0x00 || p[2] != 0x01 ) )
1491 /* sequence start code */
1492 b_sequence_start = 1;
1494 else if( *p == 0x00 && i_rest >= 4 )
1497 i_temporal_ref = ( p[1] << 2) |((p[2]>>6)&0x03);
1498 i_picture_coding_type = (p[2] >> 3)&0x07;
1500 if( i_rest >= 4 && ( i_picture_coding_type == 2 ||
1501 i_picture_coding_type == 3 ) )
1503 i_ffv = (p[3] >> 2)&0x01;
1504 i_ffc = ((p[3]&0x03) << 1)|((p[4]>>7)&0x01);
1505 if( i_rest > 4 && i_picture_coding_type == 3 )
1507 i_fbv = (p[4]>>6)&0x01;
1508 i_bfc = (p[4]>>3)&0x07;
1512 else if( *p <= 0xaf )
1519 for( i = 0; i < i_count; i++ )
1521 int i_payload = __MIN( i_max, i_data );
1522 block_t *out = block_New( p_stream,
1524 uint32_t h = ( i_temporal_ref << 16 )|
1525 ( b_sequence_start << 13 )|
1526 ( b_start_slice << 12 )|
1527 ( i == i_count - 1 ? 1 << 11 : 0 )|
1528 ( i_picture_coding_type << 8 )|
1529 ( i_fbv << 7 )|( i_bfc << 4 )|( i_ffv << 3 )|i_ffc;
1531 /* rtp common header */
1532 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1533 in->i_pts > 0 ? in->i_pts : in->i_dts );
1535 /* 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 */
1536 out->p_buffer[12] = ( h >> 24 )&0xff;
1537 out->p_buffer[13] = ( h >> 16 )&0xff;
1538 out->p_buffer[14] = ( h >> 8 )&0xff;
1539 out->p_buffer[15] = ( h )&0xff;
1541 memcpy( &out->p_buffer[16], p_data, i_payload );
1543 out->i_buffer = 16 + i_payload;
1544 out->i_dts = in->i_dts + i * in->i_length / i_count;
1545 out->i_length = in->i_length / i_count;
1547 rtp_packetize_send( id, out );
1549 p_data += i_payload;
1550 i_data -= i_payload;
1556 static int rtp_packetize_ac3( sout_stream_t *p_stream, sout_stream_id_t *id,
1559 int i_max = id->i_mtu - 12 - 2; /* payload max in one packet */
1560 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1562 uint8_t *p_data = in->p_buffer;
1563 int i_data = in->i_buffer;
1566 for( i = 0; i < i_count; i++ )
1568 int i_payload = __MIN( i_max, i_data );
1569 block_t *out = block_New( p_stream, 14 + i_payload );
1571 /* rtp common header */
1572 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1574 out->p_buffer[12] = 1;
1576 out->p_buffer[13] = 0x00;
1578 memcpy( &out->p_buffer[14], p_data, i_payload );
1580 out->i_buffer = 14 + i_payload;
1581 out->i_dts = in->i_dts + i * in->i_length / i_count;
1582 out->i_length = in->i_length / i_count;
1584 rtp_packetize_send( id, out );
1586 p_data += i_payload;
1587 i_data -= i_payload;
1593 static int rtp_packetize_split( sout_stream_t *p_stream, sout_stream_id_t *id,
1596 int i_max = id->i_mtu - 12; /* payload max in one packet */
1597 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1599 uint8_t *p_data = in->p_buffer;
1600 int i_data = in->i_buffer;
1603 for( i = 0; i < i_count; i++ )
1605 int i_payload = __MIN( i_max, i_data );
1606 block_t *out = block_New( p_stream, 12 + i_payload );
1608 /* rtp common header */
1609 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1610 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1611 memcpy( &out->p_buffer[12], p_data, i_payload );
1613 out->i_buffer = 12 + i_payload;
1614 out->i_dts = in->i_dts + i * in->i_length / i_count;
1615 out->i_length = in->i_length / i_count;
1617 rtp_packetize_send( id, out );
1619 p_data += i_payload;
1620 i_data -= i_payload;
1627 static int rtp_packetize_mp4a_latm( sout_stream_t *p_stream, sout_stream_id_t *id,
1630 int i_max = id->i_mtu - 14; /* payload max in one packet */
1631 int latmhdrsize = in->i_buffer / 0xff + 1;
1632 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1634 uint8_t *p_data = in->p_buffer, *p_header = NULL;
1635 int i_data = in->i_buffer;
1638 for( i = 0; i < i_count; i++ )
1640 int i_payload = __MIN( i_max, i_data );
1645 out = block_New( p_stream, 12 + latmhdrsize + i_payload );
1647 /* rtp common header */
1648 rtp_packetize_common( id, out, ((i == i_count - 1) ? 1 : 0),
1649 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1653 int tmp = in->i_buffer;
1655 p_header=out->p_buffer+12;
1665 memcpy( &out->p_buffer[12+latmhdrsize], p_data, i_payload );
1667 out->i_buffer = 12 + latmhdrsize + i_payload;
1668 out->i_dts = in->i_dts + i * in->i_length / i_count;
1669 out->i_length = in->i_length / i_count;
1671 rtp_packetize_send( id, out );
1673 p_data += i_payload;
1674 i_data -= i_payload;
1680 static int rtp_packetize_l16( sout_stream_t *p_stream, sout_stream_id_t *id,
1683 int i_max = id->i_mtu - 12; /* payload max in one packet */
1684 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1686 uint8_t *p_data = in->p_buffer;
1687 int i_data = in->i_buffer;
1692 int i_payload = (__MIN( i_max, i_data )/4)*4;
1693 block_t *out = block_New( p_stream, 12 + i_payload );
1695 /* rtp common header */
1696 rtp_packetize_common( id, out, 0,
1697 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1698 memcpy( &out->p_buffer[12], p_data, i_payload );
1700 out->i_buffer = 12 + i_payload;
1701 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1702 out->i_length = in->i_length / i_count;
1704 rtp_packetize_send( id, out );
1706 p_data += i_payload;
1707 i_data -= i_payload;
1714 static int rtp_packetize_l8( sout_stream_t *p_stream, sout_stream_id_t *id,
1717 int i_max = id->i_mtu - 12; /* payload max in one packet */
1718 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1720 uint8_t *p_data = in->p_buffer;
1721 int i_data = in->i_buffer;
1726 int i_payload = (__MIN( i_max, i_data )/2)*2;
1727 block_t *out = block_New( p_stream, 12 + i_payload );
1729 /* rtp common header */
1730 rtp_packetize_common( id, out, 0,
1731 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1732 memcpy( &out->p_buffer[12], p_data, i_payload );
1734 out->i_buffer = 12 + i_payload;
1735 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1736 out->i_length = in->i_length / i_count;
1738 rtp_packetize_send( id, out );
1740 p_data += i_payload;
1741 i_data -= i_payload;
1748 static int rtp_packetize_mp4a( sout_stream_t *p_stream, sout_stream_id_t *id,
1751 int i_max = id->i_mtu - 16; /* payload max in one packet */
1752 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1754 uint8_t *p_data = in->p_buffer;
1755 int i_data = in->i_buffer;
1758 for( i = 0; i < i_count; i++ )
1760 int i_payload = __MIN( i_max, i_data );
1761 block_t *out = block_New( p_stream, 16 + i_payload );
1763 /* rtp common header */
1764 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1765 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1767 /* AU headers length (bits) */
1768 out->p_buffer[12] = 0;
1769 out->p_buffer[13] = 2*8;
1770 /* for each AU length 13 bits + idx 3bits, */
1771 out->p_buffer[14] = ( in->i_buffer >> 5 )&0xff;
1772 out->p_buffer[15] = ( (in->i_buffer&0xff)<<3 )|0;
1774 memcpy( &out->p_buffer[16], p_data, i_payload );
1776 out->i_buffer = 16 + i_payload;
1777 out->i_dts = in->i_dts + i * in->i_length / i_count;
1778 out->i_length = in->i_length / i_count;
1780 rtp_packetize_send( id, out );
1782 p_data += i_payload;
1783 i_data -= i_payload;
1791 #define RTP_H263_HEADER_SIZE (2) // plen = 0
1792 #define RTP_H263_PAYLOAD_START (14) // plen = 0
1793 static int rtp_packetize_h263( sout_stream_t *p_stream, sout_stream_id_t *id,
1796 uint8_t *p_data = in->p_buffer;
1797 int i_data = in->i_buffer;
1799 int i_max = id->i_mtu - 12 - RTP_H263_HEADER_SIZE; /* payload max in one packet */
1802 int b_v_bit = 0; // no pesky error resilience
1803 int i_plen = 0; // normally plen=0 for PSC packet
1804 int i_pebit = 0; // because plen=0
1809 return VLC_EGENERIC;
1811 if( p_data[0] || p_data[1] )
1813 return VLC_EGENERIC;
1815 /* remove 2 leading 0 bytes */
1818 i_count = ( i_data + i_max - 1 ) / i_max;
1820 for( i = 0; i < i_count; i++ )
1822 int i_payload = __MIN( i_max, i_data );
1823 block_t *out = block_New( p_stream,
1824 RTP_H263_PAYLOAD_START + i_payload );
1825 b_p_bit = (i == 0) ? 1 : 0;
1826 h = ( b_p_bit << 10 )|
1831 /* rtp common header */
1832 //b_m_bit = 1; // always contains end of frame
1833 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1834 in->i_pts > 0 ? in->i_pts : in->i_dts );
1837 out->p_buffer[12] = ( h >> 8 )&0xff;
1838 out->p_buffer[13] = ( h )&0xff;
1839 memcpy( &out->p_buffer[RTP_H263_PAYLOAD_START], p_data, i_payload );
1841 out->i_buffer = RTP_H263_PAYLOAD_START + i_payload;
1842 out->i_dts = in->i_dts + i * in->i_length / i_count;
1843 out->i_length = in->i_length / i_count;
1845 rtp_packetize_send( id, out );
1847 p_data += i_payload;
1848 i_data -= i_payload;
1856 rtp_packetize_h264_nal( sout_stream_t *p_stream, sout_stream_id_t *id,
1857 const uint8_t *p_data, int i_data, int64_t i_pts,
1858 int64_t i_dts, vlc_bool_t b_last, int64_t i_length )
1860 const int i_max = id->i_mtu - 12; /* payload max in one packet */
1867 i_nal_hdr = p_data[3];
1868 i_nal_type = i_nal_hdr&0x1f;
1870 /* Skip start code */
1875 if( i_data <= i_max )
1877 /* Single NAL unit packet */
1878 block_t *out = block_New( p_stream, 12 + i_data );
1880 out->i_length = i_length;
1883 rtp_packetize_common( id, out, b_last, i_pts );
1884 out->i_buffer = 12 + i_data;
1886 memcpy( &out->p_buffer[12], p_data, i_data );
1888 rtp_packetize_send( id, out );
1892 /* FU-A Fragmentation Unit without interleaving */
1893 const int i_count = ( i_data-1 + i_max-2 - 1 ) / (i_max-2);
1899 for( i = 0; i < i_count; i++ )
1901 const int i_payload = __MIN( i_data, i_max-2 );
1902 block_t *out = block_New( p_stream, 12 + 2 + i_payload );
1903 out->i_dts = i_dts + i * i_length / i_count;
1904 out->i_length = i_length / i_count;
1907 rtp_packetize_common( id, out, (b_last && i_payload == i_data), i_pts );
1908 out->i_buffer = 14 + i_payload;
1911 out->p_buffer[12] = 0x00 | (i_nal_hdr & 0x60) | 28;
1913 out->p_buffer[13] = ( i == 0 ? 0x80 : 0x00 ) | ( (i == i_count-1) ? 0x40 : 0x00 ) | i_nal_type;
1914 memcpy( &out->p_buffer[14], p_data, i_payload );
1916 rtp_packetize_send( id, out );
1918 i_data -= i_payload;
1919 p_data += i_payload;
1925 static int rtp_packetize_h264( sout_stream_t *p_stream, sout_stream_id_t *id,
1928 const uint8_t *p_buffer = in->p_buffer;
1929 int i_buffer = in->i_buffer;
1931 while( i_buffer > 4 && ( p_buffer[0] != 0 || p_buffer[1] != 0 || p_buffer[2] != 1 ) )
1937 /* Split nal units */
1938 while( i_buffer > 4 )
1941 int i_size = i_buffer;
1942 int i_skip = i_buffer;
1944 /* search nal end */
1945 for( i_offset = 4; i_offset+2 < i_buffer ; i_offset++)
1947 if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 1 )
1949 /* we found another startcode */
1950 i_size = i_offset - ( p_buffer[i_offset-1] == 0 ? 1 : 0);
1955 /* TODO add STAP-A to remove a lot of overhead with small slice/sei/... */
1956 rtp_packetize_h264_nal( p_stream, id, p_buffer, i_size,
1957 (in->i_pts > 0 ? in->i_pts : in->i_dts), in->i_dts,
1958 (i_size >= i_buffer), in->i_length * i_size / in->i_buffer );
1966 static int rtp_packetize_amr( sout_stream_t *p_stream, sout_stream_id_t *id,
1969 int i_max = id->i_mtu - 14; /* payload max in one packet */
1970 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1972 uint8_t *p_data = in->p_buffer;
1973 int i_data = in->i_buffer;
1976 /* Only supports octet-aligned mode */
1977 for( i = 0; i < i_count; i++ )
1979 int i_payload = __MIN( i_max, i_data );
1980 block_t *out = block_New( p_stream, 14 + i_payload );
1982 /* rtp common header */
1983 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1984 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1985 /* Payload header */
1986 out->p_buffer[12] = 0xF0; /* CMR */
1987 out->p_buffer[13] = p_data[0]&0x7C; /* ToC */ /* FIXME: frame type */
1989 /* FIXME: are we fed multiple frames ? */
1990 memcpy( &out->p_buffer[14], p_data+1, i_payload-1 );
1992 out->i_buffer = 14 + i_payload-1;
1993 out->i_dts = in->i_dts + i * in->i_length / i_count;
1994 out->i_length = in->i_length / i_count;
1996 rtp_packetize_send( id, out );
1998 p_data += i_payload;
1999 i_data -= i_payload;
2005 /*****************************************************************************
2007 *****************************************************************************/
2009 /** Add an ES to a non-RTP muxed stream */
2010 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
2012 sout_input_t *p_input;
2013 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
2014 assert( p_mux != NULL );
2016 p_input = sout_MuxAddStream( p_mux, p_fmt );
2017 if( p_input == NULL )
2019 msg_Err( p_stream, "cannot add this stream to the muxer" );
2023 return (sout_stream_id_t *)p_input;
2027 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
2030 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
2031 assert( p_mux != NULL );
2033 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
2038 /** Remove an ES from a non-RTP muxed stream */
2039 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
2041 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
2042 assert( p_mux != NULL );
2044 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
2049 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
2050 const block_t *p_buffer )
2052 sout_stream_sys_t *p_sys = p_stream->p_sys;
2053 sout_stream_id_t *id = p_sys->es[0];
2055 int64_t i_dts = p_buffer->i_dts;
2057 uint8_t *p_data = p_buffer->p_buffer;
2058 unsigned int i_data = p_buffer->i_buffer;
2059 unsigned int i_max = id->i_mtu - 12;
2061 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
2065 unsigned int i_size;
2067 /* output complete packet */
2068 if( p_sys->packet &&
2069 p_sys->packet->i_buffer + i_data > i_max )
2071 rtp_packetize_send( id, p_sys->packet );
2072 p_sys->packet = NULL;
2075 if( p_sys->packet == NULL )
2077 /* allocate a new packet */
2078 p_sys->packet = block_New( p_stream, id->i_mtu );
2079 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
2080 p_sys->packet->i_dts = i_dts;
2081 p_sys->packet->i_length = p_buffer->i_length / i_packet;
2082 i_dts += p_sys->packet->i_length;
2085 i_size = __MIN( i_data,
2086 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
2088 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
2091 p_sys->packet->i_buffer += i_size;
2100 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
2103 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
2109 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
2111 p_next = p_buffer->p_next;
2112 block_Release( p_buffer );
2120 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
2122 sout_access_out_t *p_grab;
2124 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
2125 if( p_grab == NULL )
2128 p_grab->p_module = NULL;
2129 p_grab->p_sout = p_stream->p_sout;
2130 p_grab->psz_access = strdup( "grab" );
2131 p_grab->p_cfg = NULL;
2132 p_grab->psz_path = strdup( "" );
2133 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
2134 p_grab->pf_seek = NULL;
2135 p_grab->pf_write = AccessOutGrabberWrite;