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>
47 #ifdef HAVE_LINUX_DCCP_H
48 # include <linux/dccp.h>
51 # define IPPROTO_DCCP 33
53 #ifndef IPPROTO_UDPLITE
54 # define IPPROTO_UDPLITE 136
59 /*****************************************************************************
61 *****************************************************************************/
63 #define DST_TEXT N_("Destination")
64 #define DST_LONGTEXT N_( \
65 "This is the output URL that will be used." )
66 #define SDP_TEXT N_("SDP")
67 #define SDP_LONGTEXT N_( \
68 "This allows you to specify how the SDP (Session Descriptor) for this RTP "\
69 "session will be made available. You must use an url: http://location to " \
70 "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// " \
71 "for the SDP to be announced via SAP." )
72 #define MUX_TEXT N_("Muxer")
73 #define MUX_LONGTEXT N_( \
74 "This allows you to specify the muxer used for the streaming output. " \
75 "Default is to use no muxer (standard RTP stream)." )
77 #define NAME_TEXT N_("Session name")
78 #define NAME_LONGTEXT N_( \
79 "This is the name of the session that will be announced in the SDP " \
80 "(Session Descriptor)." )
81 #define DESC_TEXT N_("Session descriptipn")
82 #define DESC_LONGTEXT N_( \
83 "This allows you to give a short description with details about the stream, " \
84 "that will be announced in the SDP (Session Descriptor)." )
85 #define URL_TEXT N_("Session URL")
86 #define URL_LONGTEXT N_( \
87 "This allows you to give an URL with more details about the stream " \
88 "(often the website of the streaming organization), that will " \
89 "be announced in the SDP (Session Descriptor)." )
90 #define EMAIL_TEXT N_("Session email")
91 #define EMAIL_LONGTEXT N_( \
92 "This allows you to give a contact mail address for the stream, that will " \
93 "be announced in the SDP (Session Descriptor)." )
94 #define PHONE_TEXT N_("Session phone number")
95 #define PHONE_LONGTEXT N_( \
96 "This allows you to give a contact telephone number for the stream, that will " \
97 "be announced in the SDP (Session Descriptor)." )
99 #define PORT_TEXT N_("Port")
100 #define PORT_LONGTEXT N_( \
101 "This allows you to specify the base port for the RTP streaming." )
102 #define PORT_AUDIO_TEXT N_("Audio port")
103 #define PORT_AUDIO_LONGTEXT N_( \
104 "This allows you to specify the default audio port for the RTP streaming." )
105 #define PORT_VIDEO_TEXT N_("Video port")
106 #define PORT_VIDEO_LONGTEXT N_( \
107 "This allows you to specify the default video port for the RTP streaming." )
109 #define TTL_TEXT N_("Hop limit (TTL)")
110 #define TTL_LONGTEXT N_( \
111 "This is the hop limit (also known as \"Time-To-Live\" or TTL) of " \
112 "the multicast packets sent by the stream output (0 = use operating " \
113 "system built-in default).")
115 #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
116 #define RTCP_MUX_LONGTEXT N_( \
117 "This sends and receives RTCP packet multiplexed over the same port " \
120 #define DCCP_TEXT N_("DCCP transport")
121 #define DCCP_LONGTEXT N_( \
122 "This enables DCCP instead of UDP as a transport for RTP." )
123 #define TCP_TEXT N_("TCP transport")
124 #define TCP_LONGTEXT N_( \
125 "This enables TCP instead of UDP as a transport for RTP." )
126 #define UDP_LITE_TEXT N_("UDP-Lite transport")
127 #define UDP_LITE_LONGTEXT N_( \
128 "This enables UDP-Lite instead of UDP as a transport for RTP." )
130 #define RFC3016_TEXT N_("MP4A LATM")
131 #define RFC3016_LONGTEXT N_( \
132 "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
134 static int Open ( vlc_object_t * );
135 static void Close( vlc_object_t * );
137 #define SOUT_CFG_PREFIX "sout-rtp-"
138 #define MAX_EMPTY_BLOCKS 200
141 set_shortname( _("RTP"));
142 set_description( _("RTP stream output") );
143 set_capability( "sout stream", 0 );
144 add_shortcut( "rtp" );
145 set_category( CAT_SOUT );
146 set_subcategory( SUBCAT_SOUT_STREAM );
148 add_string( SOUT_CFG_PREFIX "dst", "", NULL, DST_TEXT,
149 DST_LONGTEXT, VLC_TRUE );
150 add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
151 SDP_LONGTEXT, VLC_TRUE );
152 add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
153 MUX_LONGTEXT, VLC_TRUE );
155 add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
156 NAME_LONGTEXT, VLC_TRUE );
157 add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
158 DESC_LONGTEXT, VLC_TRUE );
159 add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
160 URL_LONGTEXT, VLC_TRUE );
161 add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
162 EMAIL_LONGTEXT, VLC_TRUE );
163 add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
164 PHONE_LONGTEXT, VLC_TRUE );
166 add_integer( SOUT_CFG_PREFIX "port", 1234, NULL, PORT_TEXT,
167 PORT_LONGTEXT, VLC_TRUE );
168 add_integer( SOUT_CFG_PREFIX "port-audio", 1230, NULL, PORT_AUDIO_TEXT,
169 PORT_AUDIO_LONGTEXT, VLC_TRUE );
170 add_integer( SOUT_CFG_PREFIX "port-video", 1232, NULL, PORT_VIDEO_TEXT,
171 PORT_VIDEO_LONGTEXT, VLC_TRUE );
173 add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
174 TTL_LONGTEXT, VLC_TRUE );
176 add_bool( SOUT_CFG_PREFIX "rtcp-mux", VLC_FALSE, NULL,
177 RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, VLC_FALSE );
179 add_bool( SOUT_CFG_PREFIX "dccp", VLC_FALSE, NULL,
180 DCCP_TEXT, DCCP_LONGTEXT, VLC_FALSE );
181 add_bool( SOUT_CFG_PREFIX "tcp", VLC_FALSE, NULL,
182 TCP_TEXT, TCP_LONGTEXT, VLC_FALSE );
183 add_bool( SOUT_CFG_PREFIX "udplite", VLC_FALSE, NULL,
184 UDP_LITE_TEXT, UDP_LITE_LONGTEXT, VLC_FALSE );
186 add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
187 RFC3016_LONGTEXT, VLC_FALSE );
189 set_callbacks( Open, Close );
192 /*****************************************************************************
193 * Exported prototypes
194 *****************************************************************************/
195 static const char *ppsz_sout_options[] = {
196 "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
197 "description", "url", "email", "phone",
198 "rtcp-mux", "dccp", "tcp", "udplite",
202 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
203 static int Del ( sout_stream_t *, sout_stream_id_t * );
204 static int Send( sout_stream_t *, sout_stream_id_t *,
206 static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
207 static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
208 static int MuxSend( sout_stream_t *, sout_stream_id_t *,
211 static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
212 static void ThreadSend( vlc_object_t *p_this );
214 static void SDPHandleUrl( sout_stream_t *, char * );
216 static int SapSetup( sout_stream_t *p_stream );
217 static int FileSetup( sout_stream_t *p_stream );
218 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t * );
220 struct sout_stream_sys_t
224 vlc_mutex_t lock_sdp;
227 vlc_bool_t b_export_sdp_file;
231 vlc_bool_t b_export_sap;
232 session_descriptor_t *p_session;
235 httpd_host_t *p_httpd_host;
236 httpd_file_t *p_httpd_file;
242 char *psz_destination;
246 uint16_t i_port_audio;
247 uint16_t i_port_video;
251 /* when need to use a private one or when using muxer */
254 /* in case we do TS/PS over rtp */
256 sout_access_out_t *p_grab;
262 sout_stream_id_t **es;
265 typedef int (*pf_rtp_packetizer_t)( sout_stream_t *, sout_stream_id_t *,
268 typedef struct rtp_sink_t
274 struct sout_stream_id_t
278 sout_stream_t *p_stream;
280 uint32_t i_timestamp_start;
282 uint8_t i_payload_type;
293 /* Packetizer specific fields */
294 pf_rtp_packetizer_t pf_packetize;
298 vlc_mutex_t lock_sink;
301 rtsp_stream_id_t *rtsp_id;
304 block_fifo_t *p_fifo;
309 /*****************************************************************************
311 *****************************************************************************/
312 static int Open( vlc_object_t *p_this )
314 sout_stream_t *p_stream = (sout_stream_t*)p_this;
315 sout_instance_t *p_sout = p_stream->p_sout;
316 sout_stream_sys_t *p_sys = NULL;
317 config_chain_t *p_cfg = NULL;
319 vlc_bool_t b_rtsp = VLC_FALSE;
321 config_ChainParse( p_stream, SOUT_CFG_PREFIX,
322 ppsz_sout_options, p_stream->p_cfg );
324 p_sys = malloc( sizeof( sout_stream_sys_t ) );
328 p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
330 p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
331 p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
332 p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
333 p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
335 p_sys->psz_sdp_file = NULL;
337 if( p_sys->i_port_audio == p_sys->i_port_video )
339 msg_Err( p_stream, "audio and video port cannot be the same" );
340 p_sys->i_port_audio = 0;
341 p_sys->i_port_video = 0;
344 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
346 if( !strcmp( p_cfg->psz_name, "sdp" )
347 && ( p_cfg->psz_value != NULL )
348 && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
356 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
359 if( !strncasecmp( psz, "rtsp:", 5 ) )
365 /* Transport protocol */
366 p_sys->proto = IPPROTO_UDP;
368 if( var_GetBool( p_stream, SOUT_CFG_PREFIX "dccp" ) )
370 p_sys->proto = IPPROTO_DCCP;
371 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
375 if( var_GetBool( p_stream, SOUT_CFG_PREFIX "tcp" ) )
377 p_sys->proto = IPPROTO_TCP;
378 p_sys->rtcp_mux = VLC_TRUE; /* Force RTP/RTCP mux */
382 if( var_GetBool( p_stream, SOUT_CFG_PREFIX "udplite" ) )
383 p_sys->proto = IPPROTO_UDPLITE;
385 if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
387 msg_Err( p_stream, "missing destination and not in RTSP mode" );
392 p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
393 if( p_sys->i_ttl == 0 )
395 /* Normally, we should let the default hop limit up to the core,
396 * but we have to know it to build our SDP properly, which is why
397 * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
399 p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
402 p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
404 p_sys->i_payload_type = 96;
408 p_sys->psz_sdp = NULL;
410 p_sys->b_export_sap = VLC_FALSE;
411 p_sys->b_export_sdp_file = VLC_FALSE;
412 p_sys->p_session = NULL;
414 p_sys->p_httpd_host = NULL;
415 p_sys->p_httpd_file = NULL;
417 p_stream->p_sys = p_sys;
419 vlc_mutex_init( p_stream, &p_sys->lock_sdp );
420 vlc_mutex_init( p_stream, &p_sys->lock_es );
422 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
425 sout_stream_id_t *id;
427 /* Check muxer type */
428 if( strncasecmp( psz, "ps", 2 )
429 && strncasecmp( psz, "mpeg1", 5 )
430 && strncasecmp( psz, "ts", 2 ) )
432 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
434 vlc_mutex_destroy( &p_sys->lock_sdp );
435 vlc_mutex_destroy( &p_sys->lock_es );
440 p_sys->p_grab = GrabberCreate( p_stream );
441 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
444 if( p_sys->p_mux == NULL )
446 msg_Err( p_stream, "cannot create muxer" );
447 sout_AccessOutDelete( p_sys->p_grab );
448 vlc_mutex_destroy( &p_sys->lock_sdp );
449 vlc_mutex_destroy( &p_sys->lock_es );
454 id = Add( p_stream, NULL );
457 sout_MuxDelete( p_sys->p_mux );
458 sout_AccessOutDelete( p_sys->p_grab );
459 vlc_mutex_destroy( &p_sys->lock_sdp );
460 vlc_mutex_destroy( &p_sys->lock_es );
465 p_sys->packet = NULL;
467 p_stream->pf_add = MuxAdd;
468 p_stream->pf_del = MuxDel;
469 p_stream->pf_send = MuxSend;
474 p_sys->p_grab = NULL;
476 p_stream->pf_add = Add;
477 p_stream->pf_del = Del;
478 p_stream->pf_send = Send;
481 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
484 config_chain_t *p_cfg;
486 SDPHandleUrl( p_stream, psz );
488 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
490 if( !strcmp( p_cfg->psz_name, "sdp" ) )
492 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
495 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
496 if( !strcmp( p_cfg->psz_value, psz ) )
499 SDPHandleUrl( p_stream, p_cfg->psz_value );
505 /* update p_sout->i_out_pace_nocontrol */
506 p_stream->p_sout->i_out_pace_nocontrol++;
511 /*****************************************************************************
513 *****************************************************************************/
514 static void Close( vlc_object_t * p_this )
516 sout_stream_t *p_stream = (sout_stream_t*)p_this;
517 sout_stream_sys_t *p_sys = p_stream->p_sys;
519 /* update p_sout->i_out_pace_nocontrol */
520 p_stream->p_sout->i_out_pace_nocontrol--;
524 assert( p_sys->i_es == 1 );
525 Del( p_stream, p_sys->es[0] );
527 sout_MuxDelete( p_sys->p_mux );
528 sout_AccessOutDelete( p_sys->p_grab );
531 block_Release( p_sys->packet );
533 if( p_sys->b_export_sap )
536 SapSetup( p_stream );
540 if( p_sys->rtsp != NULL )
541 RtspUnsetup( p_sys->rtsp );
543 vlc_mutex_destroy( &p_sys->lock_sdp );
544 vlc_mutex_destroy( &p_sys->lock_es );
546 if( p_sys->p_httpd_file )
547 httpd_FileDelete( p_sys->p_httpd_file );
549 if( p_sys->p_httpd_host )
550 httpd_HostDelete( p_sys->p_httpd_host );
552 free( p_sys->psz_sdp );
554 if( p_sys->b_export_sdp_file )
557 unlink( p_sys->psz_sdp_file );
559 free( p_sys->psz_sdp_file );
561 free( p_sys->psz_destination );
565 /*****************************************************************************
567 *****************************************************************************/
568 static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
570 sout_stream_sys_t *p_sys = p_stream->p_sys;
573 vlc_UrlParse( &url, psz_url, 0 );
574 if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
576 if( p_sys->p_httpd_file )
578 msg_Err( p_stream, "you can use sdp=http:// only once" );
582 if( HttpSetup( p_stream, &url ) )
584 msg_Err( p_stream, "cannot export SDP as HTTP" );
587 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
589 if( p_sys->rtsp != NULL )
591 msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
595 /* FIXME test if destination is multicast or no destination at all */
596 p_sys->rtsp = RtspSetup( p_stream, &url );
597 if( p_sys->rtsp == NULL )
599 msg_Err( p_stream, "cannot export SDP as RTSP" );
602 if( p_sys->p_mux != NULL )
604 sout_stream_id_t *id = p_sys->es[0];
605 id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0,
606 p_sys->psz_destination, p_sys->i_ttl,
607 id->i_port, id->i_port + 1 );
610 else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
611 ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
613 p_sys->b_export_sap = VLC_TRUE;
614 SapSetup( p_stream );
616 else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
618 if( p_sys->b_export_sdp_file )
620 msg_Err( p_stream, "you can use sdp=file:// only once" );
623 p_sys->b_export_sdp_file = VLC_TRUE;
624 psz_url = &psz_url[5];
625 if( psz_url[0] == '/' && psz_url[1] == '/' )
627 p_sys->psz_sdp_file = strdup( psz_url );
631 msg_Warn( p_stream, "unknown protocol for SDP (%s)",
636 vlc_UrlClean( &url );
639 /*****************************************************************************
641 *****************************************************************************/
643 char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
645 const sout_stream_sys_t *p_sys = p_stream->p_sys;
647 struct sockaddr_storage dst;
651 * When we have a fixed destination (typically when we do multicast),
652 * we need to put the actual port numbers in the SDP.
653 * When there is no fixed destination, we only support RTSP unicast
654 * on-demand setup, so we should rather let the clients decide which ports
656 * When there is both a fixed destination and RTSP unicast, we need to
657 * put port numbers used by the fixed destination, otherwise the SDP would
658 * become totally incorrect for multicast use. It should be noted that
659 * port numbers from SDP with RTSP are only "recommendation" from the
660 * server to the clients (per RFC2326), so only broken clients will fail
661 * to handle this properly. There is no solution but to use two differents
662 * output chain with two different RTSP URLs if you need to handle this
667 if( p_sys->psz_destination != NULL )
671 /* Oh boy, this is really ugly! (+ race condition on lock_es) */
672 dstlen = sizeof( dst );
673 if( p_sys->es[0]->listen_fd != NULL )
674 getsockname( p_sys->es[0]->listen_fd[0],
675 (struct sockaddr *)&dst, &dstlen );
677 getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
678 (struct sockaddr *)&dst, &dstlen );
684 /* Dummy destination address for RTSP */
685 memset (&dst, 0, sizeof( struct sockaddr_in ) );
686 dst.ss_family = AF_INET;
690 dstlen = sizeof( struct sockaddr_in );
693 psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
694 NULL, 0, (struct sockaddr *)&dst, dstlen );
695 if( psz_sdp == NULL )
698 /* TODO: a=source-filter */
699 if( p_sys->rtcp_mux )
700 sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
702 if( rtsp_url != NULL )
703 sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
705 /* FIXME: locking?! */
706 for( i = 0; i < p_sys->i_es; i++ )
708 sout_stream_id_t *id = p_sys->es[i];
709 const char *mime_major; /* major MIME type */
710 const char *proto = "RTP/AVP"; /* protocol */
711 const char *scode; /* DCCP service code */
716 mime_major = "video";
720 mime_major = "audio";
728 mime_major = "application";
733 if( rtsp_url == NULL )
735 switch( p_sys->proto )
740 proto = "TCP/RTP/AVP";
743 proto = "DCCP/RTP/AVP";
745 case IPPROTO_UDPLITE:
750 sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
751 id->i_payload_type, VLC_FALSE, id->i_bitrate,
752 id->psz_rtpmap, id->psz_fmtp);
754 if( rtsp_url != NULL )
756 assert( strlen( rtsp_url ) > 0 );
757 vlc_bool_t addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
758 sdp_AddAttribute ( &psz_sdp, "control",
759 addslash ? "%s/trackID=%u" : "%strackID=%u",
764 if( id->listen_fd != NULL )
765 sdp_AddAttribute( &psz_sdp, "setup", "passive" );
766 if( p_sys->proto == IPPROTO_DCCP )
767 sdp_AddAttribute( &psz_sdp, "dccp-service-code", scode );
774 /*****************************************************************************
776 *****************************************************************************/
777 static int rtp_packetize_l16 ( sout_stream_t *, sout_stream_id_t *, block_t * );
778 static int rtp_packetize_l8 ( sout_stream_t *, sout_stream_id_t *, block_t * );
779 static int rtp_packetize_mpa ( sout_stream_t *, sout_stream_id_t *, block_t * );
780 static int rtp_packetize_mpv ( sout_stream_t *, sout_stream_id_t *, block_t * );
781 static int rtp_packetize_ac3 ( sout_stream_t *, sout_stream_id_t *, block_t * );
782 static int rtp_packetize_split( sout_stream_t *, sout_stream_id_t *, block_t * );
783 static int rtp_packetize_mp4a ( sout_stream_t *, sout_stream_id_t *, block_t * );
784 static int rtp_packetize_mp4a_latm ( sout_stream_t *, sout_stream_id_t *, block_t * );
785 static int rtp_packetize_h263 ( sout_stream_t *, sout_stream_id_t *, block_t * );
786 static int rtp_packetize_h264 ( sout_stream_t *, sout_stream_id_t *, block_t * );
787 static int rtp_packetize_amr ( sout_stream_t *, sout_stream_id_t *, block_t * );
788 static int rtp_packetize_t140 ( sout_stream_t *, sout_stream_id_t *, block_t * );
790 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
792 static const char hex[16] = "0123456789abcdef";
795 for( i = 0; i < i_data; i++ )
797 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
798 s[2*i+1] = hex[(p_data[i] )&0xf];
804 /** Add an ES as a new RTP stream */
805 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
807 /* NOTE: As a special case, if we use a non-RTP
808 * mux (TS/PS), then p_fmt is NULL. */
809 sout_stream_sys_t *p_sys = p_stream->p_sys;
810 sout_stream_id_t *id;
811 int i_port, cscov = -1;
814 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
817 vlc_object_attach( id, p_stream );
819 /* Choose the port */
824 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
826 i_port = p_sys->i_port_audio;
827 p_sys->i_port_audio = 0;
830 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
832 i_port = p_sys->i_port_video;
833 p_sys->i_port_video = 0;
838 if( p_sys->i_port != p_sys->i_port_audio
839 && p_sys->i_port != p_sys->i_port_video )
841 i_port = p_sys->i_port;
848 id->p_stream = p_stream;
850 id->i_timestamp_start = rand()&0xffffffff;
851 id->i_sequence = rand()&0xffff;
852 id->i_payload_type = p_sys->i_payload_type;
853 id->ssrc[0] = rand()&0xff;
854 id->ssrc[1] = rand()&0xff;
855 id->ssrc[2] = rand()&0xff;
856 id->ssrc[3] = rand()&0xff;
858 id->psz_rtpmap = NULL;
860 id->i_clock_rate = 90000; /* most common case */
864 id->i_cat = p_fmt->i_cat;
865 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
869 id->i_cat = VIDEO_ES;
873 id->pf_packetize = NULL;
874 id->i_mtu = config_GetInt( p_stream, "mtu" );
875 if( id->i_mtu <= 12 + 16 )
876 id->i_mtu = 576 - 20 - 8; /* pessimistic */
878 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
880 vlc_mutex_init( p_stream, &id->lock_sink );
885 id->listen_fd = NULL;
888 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
890 if( p_sys->psz_destination != NULL )
891 switch( p_sys->proto )
895 id->listen_fd = net_Listen( VLC_OBJECT(p_stream),
896 p_sys->psz_destination, i_port,
898 if( id->listen_fd == NULL )
900 msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
907 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
908 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
909 i_port, ttl, p_sys->proto );
912 msg_Err( p_stream, "cannot create RTP socket" );
915 rtp_add_sink( id, fd, p_sys->rtcp_mux );
921 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
923 if( psz == NULL ) /* Uho! */
926 if( strncmp( psz, "ts", 2 ) == 0 )
928 id->i_payload_type = 33;
929 id->psz_rtpmap = strdup( "MP2T/90000" );
933 id->psz_rtpmap = strdup( "MP2P/90000" );
937 switch( p_fmt->i_codec )
939 case VLC_FOURCC( 's', '1', '6', 'b' ):
940 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
942 id->i_payload_type = 11;
944 else if( p_fmt->audio.i_channels == 2 &&
945 p_fmt->audio.i_rate == 44100 )
947 id->i_payload_type = 10;
949 if( asprintf( &id->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
950 p_fmt->audio.i_channels ) == -1 )
951 id->psz_rtpmap = NULL;
952 id->i_clock_rate = p_fmt->audio.i_rate;
953 id->pf_packetize = rtp_packetize_l16;
955 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
956 if( asprintf( &id->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
957 p_fmt->audio.i_channels ) == -1 )
958 id->psz_rtpmap = NULL;
959 id->i_clock_rate = p_fmt->audio.i_rate;
960 id->pf_packetize = rtp_packetize_l8;
962 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
963 id->i_payload_type = 14;
964 id->psz_rtpmap = strdup( "MPA/90000" );
965 id->pf_packetize = rtp_packetize_mpa;
967 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
968 id->i_payload_type = 32;
969 id->psz_rtpmap = strdup( "MPV/90000" );
970 id->pf_packetize = rtp_packetize_mpv;
972 case VLC_FOURCC( 'a', '5', '2', ' ' ):
973 id->psz_rtpmap = strdup( "ac3/90000" );
974 id->pf_packetize = rtp_packetize_ac3;
976 case VLC_FOURCC( 'H', '2', '6', '3' ):
977 id->psz_rtpmap = strdup( "H263-1998/90000" );
978 id->pf_packetize = rtp_packetize_h263;
980 case VLC_FOURCC( 'h', '2', '6', '4' ):
981 id->psz_rtpmap = strdup( "H264/90000" );
982 id->pf_packetize = rtp_packetize_h264;
985 if( p_fmt->i_extra > 0 )
987 uint8_t *p_buffer = p_fmt->p_extra;
988 int i_buffer = p_fmt->i_extra;
989 char *p_64_sps = NULL;
990 char *p_64_pps = NULL;
993 while( i_buffer > 4 &&
994 p_buffer[0] == 0 && p_buffer[1] == 0 &&
995 p_buffer[2] == 0 && p_buffer[3] == 1 )
997 const int i_nal_type = p_buffer[4]&0x1f;
1001 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
1004 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
1006 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
1008 /* we found another startcode */
1013 if( i_nal_type == 7 )
1015 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1016 sprintf_hexa( hexa, &p_buffer[5], 3 );
1018 else if( i_nal_type == 8 )
1020 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
1026 if( p_64_sps && p_64_pps &&
1027 ( asprintf( &id->psz_fmtp,
1028 "packetization-mode=1;profile-level-id=%s;"
1029 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
1030 p_64_pps ) == -1 ) )
1031 id->psz_fmtp = NULL;
1036 id->psz_fmtp = strdup( "packetization-mode=1" );
1039 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
1041 char hexa[2*p_fmt->i_extra +1];
1043 id->psz_rtpmap = strdup( "MP4V-ES/90000" );
1044 id->pf_packetize = rtp_packetize_split;
1045 if( p_fmt->i_extra > 0 )
1047 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1048 if( asprintf( &id->psz_fmtp,
1049 "profile-level-id=3; config=%s;", hexa ) == -1 )
1050 id->psz_fmtp = NULL;
1054 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
1056 id->i_clock_rate = p_fmt->audio.i_rate;
1060 char hexa[2*p_fmt->i_extra +1];
1062 if( asprintf( &id->psz_rtpmap, "mpeg4-generic/%d",
1063 p_fmt->audio.i_rate ) == -1 )
1064 id->psz_rtpmap = NULL;
1065 id->pf_packetize = rtp_packetize_mp4a;
1066 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1067 if( asprintf( &id->psz_fmtp,
1068 "streamtype=5; profile-level-id=15; "
1069 "mode=AAC-hbr; config=%s; SizeLength=13; "
1070 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1072 id->psz_fmtp = NULL;
1078 unsigned char config[6];
1079 unsigned int aacsrates[15] = {
1080 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1081 16000, 12000, 11025, 8000, 7350, 0, 0 };
1083 for( i = 0; i < 15; i++ )
1084 if( p_fmt->audio.i_rate == aacsrates[i] )
1090 config[3]=p_fmt->audio.i_channels<<4;
1094 if( asprintf( &id->psz_rtpmap, "MP4A-LATM/%d/%d",
1095 p_fmt->audio.i_rate,
1096 p_fmt->audio.i_channels ) == -1)
1097 id->psz_rtpmap = NULL;
1098 id->pf_packetize = rtp_packetize_mp4a_latm;
1099 sprintf_hexa( hexa, config, 6 );
1100 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1101 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1102 id->psz_fmtp = NULL;
1106 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1107 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1108 "AMR/8000/2" : "AMR/8000" );
1109 id->psz_fmtp = strdup( "octet-align=1" );
1110 id->i_clock_rate = p_fmt->audio.i_rate;
1111 id->pf_packetize = rtp_packetize_amr;
1113 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1114 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1115 "AMR-WB/16000/2" : "AMR-WB/16000" );
1116 id->psz_fmtp = strdup( "octet-align=1" );
1117 id->i_clock_rate = p_fmt->audio.i_rate;
1118 id->pf_packetize = rtp_packetize_amr;
1120 case VLC_FOURCC( 't', '1', '4', '0' ):
1121 id->psz_rtpmap = strdup( "t140/1000" );
1122 id->i_clock_rate = 1000;
1123 id->pf_packetize = rtp_packetize_t140;
1127 msg_Err( p_stream, "cannot add this stream (unsupported "
1128 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1133 cscov += 8 /* UDP */ + 12 /* RTP */;
1135 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1137 if( id->i_payload_type == p_sys->i_payload_type )
1138 p_sys->i_payload_type++;
1140 if( p_sys->rtsp != NULL )
1141 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1142 p_sys->psz_destination,
1143 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1145 id->p_fifo = block_FifoNew( p_stream );
1146 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
1147 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
1150 /* Update p_sys context */
1151 vlc_mutex_lock( &p_sys->lock_es );
1152 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1153 vlc_mutex_unlock( &p_sys->lock_es );
1155 psz_sdp = SDPGenerate( p_stream, NULL );
1157 vlc_mutex_lock( &p_sys->lock_sdp );
1158 free( p_sys->psz_sdp );
1159 p_sys->psz_sdp = psz_sdp;
1160 vlc_mutex_unlock( &p_sys->lock_sdp );
1162 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1164 /* Update SDP (sap/file) */
1165 if( p_sys->b_export_sap ) SapSetup( p_stream );
1166 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1171 Del( p_stream, id );
1175 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1177 sout_stream_sys_t *p_sys = p_stream->p_sys;
1179 if( id->p_fifo != NULL )
1181 vlc_object_kill( id );
1182 block_FifoWake( id->p_fifo );
1183 vlc_thread_join( id );
1184 block_FifoRelease( id->p_fifo );
1187 vlc_mutex_lock( &p_sys->lock_es );
1188 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1189 vlc_mutex_unlock( &p_sys->lock_es );
1192 if( id->i_port > 0 )
1194 if( id->i_cat == AUDIO_ES && p_sys->i_port_audio == 0 )
1195 p_sys->i_port_audio = id->i_port;
1196 else if( id->i_cat == VIDEO_ES && p_sys->i_port_video == 0 )
1197 p_sys->i_port_video = id->i_port;
1200 free( id->psz_rtpmap );
1201 free( id->psz_fmtp );
1204 RtspDelId( p_sys->rtsp, id->rtsp_id );
1206 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1207 if( id->listen_fd != NULL )
1208 net_ListenClose( id->listen_fd );
1210 vlc_mutex_destroy( &id->lock_sink );
1212 /* Update SDP (sap/file) */
1213 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1214 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1216 vlc_object_detach( id );
1217 vlc_object_destroy( id );
1221 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1226 assert( p_stream->p_sys->p_mux == NULL );
1228 while( p_buffer != NULL )
1230 p_next = p_buffer->p_next;
1231 if( id->pf_packetize( p_stream, id, p_buffer ) )
1234 block_Release( p_buffer );
1240 /****************************************************************************
1242 ****************************************************************************/
1243 static int SapSetup( sout_stream_t *p_stream )
1245 sout_stream_sys_t *p_sys = p_stream->p_sys;
1246 sout_instance_t *p_sout = p_stream->p_sout;
1248 /* Remove the previous session */
1249 if( p_sys->p_session != NULL)
1251 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1252 p_sys->p_session = NULL;
1255 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1257 announce_method_t *p_method = sout_SAPMethod();
1258 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout, SOUT_CFG_PREFIX,
1260 p_sys->psz_destination,
1262 sout_MethodRelease( p_method );
1268 /****************************************************************************
1270 ****************************************************************************/
1271 static int FileSetup( sout_stream_t *p_stream )
1273 sout_stream_sys_t *p_sys = p_stream->p_sys;
1276 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1278 msg_Err( p_stream, "cannot open file '%s' (%m)",
1279 p_sys->psz_sdp_file );
1280 return VLC_EGENERIC;
1283 fputs( p_sys->psz_sdp, f );
1289 /****************************************************************************
1291 ****************************************************************************/
1292 static int HttpCallback( httpd_file_sys_t *p_args,
1293 httpd_file_t *, uint8_t *p_request,
1294 uint8_t **pp_data, int *pi_data );
1296 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t *url)
1298 sout_stream_sys_t *p_sys = p_stream->p_sys;
1300 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1301 url->i_port > 0 ? url->i_port : 80 );
1302 if( p_sys->p_httpd_host )
1304 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1305 url->psz_path ? url->psz_path : "/",
1308 HttpCallback, (void*)p_sys );
1310 if( p_sys->p_httpd_file == NULL )
1312 return VLC_EGENERIC;
1317 static int HttpCallback( httpd_file_sys_t *p_args,
1318 httpd_file_t *f, uint8_t *p_request,
1319 uint8_t **pp_data, int *pi_data )
1321 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1323 vlc_mutex_lock( &p_sys->lock_sdp );
1324 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1326 *pi_data = strlen( p_sys->psz_sdp );
1327 *pp_data = malloc( *pi_data );
1328 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1335 vlc_mutex_unlock( &p_sys->lock_sdp );
1340 /****************************************************************************
1342 ****************************************************************************/
1343 static void ThreadSend( vlc_object_t *p_this )
1345 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1346 unsigned i_caching = id->i_caching;
1348 int fd[5] = { -1, -1, -1, -1, -1 };
1356 fd[4] = open( "/dev/null", O_WRONLY );
1361 block_t *out = block_FifoGet( id->p_fifo );
1363 continue; /* Forced wakeup */
1365 mtime_t i_date = out->i_dts + i_caching;
1366 ssize_t len = out->i_buffer;
1370 len = write( fd[1], out->p_buffer, len);
1372 continue; /* Uho - should not happen */
1376 vlc_mutex_lock( &id->lock_sink );
1378 unsigned deadc = 0; /* How many dead sockets? */
1379 int deadv[id->sinkc]; /* Dead sockets list */
1382 for( int i = 0; i < id->sinkc; i++ )
1384 SendRTCP( id->sinkv[i].rtcp, out );
1387 tee( fd[0], fd[3], len, 0 );
1388 if( splice( fd[2], NULL, id->sinkv[i].rtp_fd, NULL, len,
1389 SPLICE_F_NONBLOCK ) >= 0 )
1393 splice( fd[2], NULL, fd[4], NULL, len, 0 );
1395 if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) < 0 )
1396 /*deadv[deadc++] = id->sinkv[i].rtp_fd*/;
1398 vlc_mutex_unlock( &id->lock_sink );
1400 block_Release( out );
1402 splice( fd[0], NULL, fd[4], NULL, len, 0 );
1406 for( unsigned i = 0; i < deadc; i++ )
1408 msg_Dbg( id, "removing socket %d", deadv[i] );
1409 rtp_del_sink( id, deadv[i] );
1413 /* Hopefully we won't overflow the SO_MAXCONN accept queue */
1414 while( id->listen_fd != NULL )
1416 int fd = net_Accept( id, id->listen_fd, 0 );
1419 msg_Dbg( id, "adding socket %d", fd );
1420 rtp_add_sink( id, fd, VLC_TRUE );
1425 for( unsigned i = 0; i < 5; i++ )
1430 static inline void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1432 block_FifoPut( id->p_fifo, out );
1435 int rtp_add_sink( sout_stream_id_t *id, int fd, vlc_bool_t rtcp_mux )
1437 rtp_sink_t sink = { fd, NULL };
1438 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
1440 if( sink.rtcp == NULL )
1441 msg_Err( id, "RTCP failed!" );
1443 vlc_mutex_lock( &id->lock_sink );
1444 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1445 vlc_mutex_unlock( &id->lock_sink );
1449 void rtp_del_sink( sout_stream_id_t *id, int fd )
1451 rtp_sink_t sink = { fd, NULL };
1453 /* NOTE: must be safe to use if fd is not included */
1454 vlc_mutex_lock( &id->lock_sink );
1455 for( int i = 0; i < id->sinkc; i++ )
1457 if (id->sinkv[i].rtp_fd == fd)
1459 sink = id->sinkv[i];
1460 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1464 vlc_mutex_unlock( &id->lock_sink );
1466 CloseRTCP( sink.rtcp );
1467 net_Close( sink.rtp_fd );
1470 /****************************************************************************
1472 ****************************************************************************/
1473 static void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1474 int b_marker, int64_t i_pts )
1476 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / I64C(1000000);
1478 out->p_buffer[0] = 0x80;
1479 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1480 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1481 out->p_buffer[3] = ( id->i_sequence )&0xff;
1482 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1483 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1484 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1485 out->p_buffer[7] = ( i_timestamp )&0xff;
1487 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1493 static int rtp_packetize_mpa( sout_stream_t *p_stream, sout_stream_id_t *id,
1496 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1497 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1499 uint8_t *p_data = in->p_buffer;
1500 int i_data = in->i_buffer;
1503 for( i = 0; i < i_count; i++ )
1505 int i_payload = __MIN( i_max, i_data );
1506 block_t *out = block_New( p_stream, 16 + i_payload );
1508 /* rtp common header */
1509 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1511 out->p_buffer[12] = 0;
1512 out->p_buffer[13] = 0;
1513 /* fragment offset in the current frame */
1514 out->p_buffer[14] = ( (i*i_max) >> 8 )&0xff;
1515 out->p_buffer[15] = ( (i*i_max) )&0xff;
1516 memcpy( &out->p_buffer[16], p_data, i_payload );
1518 out->i_buffer = 16 + i_payload;
1519 out->i_dts = in->i_dts + i * in->i_length / i_count;
1520 out->i_length = in->i_length / i_count;
1522 rtp_packetize_send( id, out );
1524 p_data += i_payload;
1525 i_data -= i_payload;
1532 static int rtp_packetize_mpv( sout_stream_t *p_stream, sout_stream_id_t *id,
1535 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1536 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1538 uint8_t *p_data = in->p_buffer;
1539 int i_data = in->i_buffer;
1541 int b_sequence_start = 0;
1542 int i_temporal_ref = 0;
1543 int i_picture_coding_type = 0;
1544 int i_fbv = 0, i_bfc = 0, i_ffv = 0, i_ffc = 0;
1545 int b_start_slice = 0;
1547 /* preparse this packet to get some info */
1548 if( in->i_buffer > 4 )
1550 uint8_t *p = p_data;
1551 int i_rest = in->i_buffer;
1555 while( i_rest > 4 &&
1556 ( p[0] != 0x00 || p[1] != 0x00 || p[2] != 0x01 ) )
1570 /* sequence start code */
1571 b_sequence_start = 1;
1573 else if( *p == 0x00 && i_rest >= 4 )
1576 i_temporal_ref = ( p[1] << 2) |((p[2]>>6)&0x03);
1577 i_picture_coding_type = (p[2] >> 3)&0x07;
1579 if( i_rest >= 4 && ( i_picture_coding_type == 2 ||
1580 i_picture_coding_type == 3 ) )
1582 i_ffv = (p[3] >> 2)&0x01;
1583 i_ffc = ((p[3]&0x03) << 1)|((p[4]>>7)&0x01);
1584 if( i_rest > 4 && i_picture_coding_type == 3 )
1586 i_fbv = (p[4]>>6)&0x01;
1587 i_bfc = (p[4]>>3)&0x07;
1591 else if( *p <= 0xaf )
1598 for( i = 0; i < i_count; i++ )
1600 int i_payload = __MIN( i_max, i_data );
1601 block_t *out = block_New( p_stream,
1603 uint32_t h = ( i_temporal_ref << 16 )|
1604 ( b_sequence_start << 13 )|
1605 ( b_start_slice << 12 )|
1606 ( i == i_count - 1 ? 1 << 11 : 0 )|
1607 ( i_picture_coding_type << 8 )|
1608 ( i_fbv << 7 )|( i_bfc << 4 )|( i_ffv << 3 )|i_ffc;
1610 /* rtp common header */
1611 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1612 in->i_pts > 0 ? in->i_pts : in->i_dts );
1614 /* 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 */
1615 out->p_buffer[12] = ( h >> 24 )&0xff;
1616 out->p_buffer[13] = ( h >> 16 )&0xff;
1617 out->p_buffer[14] = ( h >> 8 )&0xff;
1618 out->p_buffer[15] = ( h )&0xff;
1620 memcpy( &out->p_buffer[16], p_data, i_payload );
1622 out->i_buffer = 16 + i_payload;
1623 out->i_dts = in->i_dts + i * in->i_length / i_count;
1624 out->i_length = in->i_length / i_count;
1626 rtp_packetize_send( id, out );
1628 p_data += i_payload;
1629 i_data -= i_payload;
1635 static int rtp_packetize_ac3( sout_stream_t *p_stream, sout_stream_id_t *id,
1638 int i_max = id->i_mtu - 12 - 2; /* payload max in one packet */
1639 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1641 uint8_t *p_data = in->p_buffer;
1642 int i_data = in->i_buffer;
1645 for( i = 0; i < i_count; i++ )
1647 int i_payload = __MIN( i_max, i_data );
1648 block_t *out = block_New( p_stream, 14 + i_payload );
1650 /* rtp common header */
1651 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1653 out->p_buffer[12] = 1;
1655 out->p_buffer[13] = 0x00;
1657 memcpy( &out->p_buffer[14], p_data, i_payload );
1659 out->i_buffer = 14 + i_payload;
1660 out->i_dts = in->i_dts + i * in->i_length / i_count;
1661 out->i_length = in->i_length / i_count;
1663 rtp_packetize_send( id, out );
1665 p_data += i_payload;
1666 i_data -= i_payload;
1672 static int rtp_packetize_split( sout_stream_t *p_stream, sout_stream_id_t *id,
1675 int i_max = id->i_mtu - 12; /* payload max in one packet */
1676 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1678 uint8_t *p_data = in->p_buffer;
1679 int i_data = in->i_buffer;
1682 for( i = 0; i < i_count; i++ )
1684 int i_payload = __MIN( i_max, i_data );
1685 block_t *out = block_New( p_stream, 12 + i_payload );
1687 /* rtp common header */
1688 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1689 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1690 memcpy( &out->p_buffer[12], p_data, i_payload );
1692 out->i_buffer = 12 + i_payload;
1693 out->i_dts = in->i_dts + i * in->i_length / i_count;
1694 out->i_length = in->i_length / i_count;
1696 rtp_packetize_send( id, out );
1698 p_data += i_payload;
1699 i_data -= i_payload;
1706 static int rtp_packetize_mp4a_latm( sout_stream_t *p_stream, sout_stream_id_t *id,
1709 int i_max = id->i_mtu - 14; /* payload max in one packet */
1710 int latmhdrsize = in->i_buffer / 0xff + 1;
1711 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1713 uint8_t *p_data = in->p_buffer, *p_header = NULL;
1714 int i_data = in->i_buffer;
1717 for( i = 0; i < i_count; i++ )
1719 int i_payload = __MIN( i_max, i_data );
1724 out = block_New( p_stream, 12 + latmhdrsize + i_payload );
1726 /* rtp common header */
1727 rtp_packetize_common( id, out, ((i == i_count - 1) ? 1 : 0),
1728 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1732 int tmp = in->i_buffer;
1734 p_header=out->p_buffer+12;
1744 memcpy( &out->p_buffer[12+latmhdrsize], p_data, i_payload );
1746 out->i_buffer = 12 + latmhdrsize + i_payload;
1747 out->i_dts = in->i_dts + i * in->i_length / i_count;
1748 out->i_length = in->i_length / i_count;
1750 rtp_packetize_send( id, out );
1752 p_data += i_payload;
1753 i_data -= i_payload;
1759 static int rtp_packetize_l16( sout_stream_t *p_stream, sout_stream_id_t *id,
1762 int i_max = id->i_mtu - 12; /* payload max in one packet */
1763 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1765 uint8_t *p_data = in->p_buffer;
1766 int i_data = in->i_buffer;
1771 int i_payload = (__MIN( i_max, i_data )/4)*4;
1772 block_t *out = block_New( p_stream, 12 + i_payload );
1774 /* rtp common header */
1775 rtp_packetize_common( id, out, 0,
1776 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1777 memcpy( &out->p_buffer[12], p_data, i_payload );
1779 out->i_buffer = 12 + i_payload;
1780 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1781 out->i_length = in->i_length / i_count;
1783 rtp_packetize_send( id, out );
1785 p_data += i_payload;
1786 i_data -= i_payload;
1793 static int rtp_packetize_l8( sout_stream_t *p_stream, sout_stream_id_t *id,
1796 int i_max = id->i_mtu - 12; /* payload max in one packet */
1797 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1799 uint8_t *p_data = in->p_buffer;
1800 int i_data = in->i_buffer;
1805 int i_payload = (__MIN( i_max, i_data )/2)*2;
1806 block_t *out = block_New( p_stream, 12 + i_payload );
1808 /* rtp common header */
1809 rtp_packetize_common( id, out, 0,
1810 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1811 memcpy( &out->p_buffer[12], p_data, i_payload );
1813 out->i_buffer = 12 + i_payload;
1814 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1815 out->i_length = in->i_length / i_count;
1817 rtp_packetize_send( id, out );
1819 p_data += i_payload;
1820 i_data -= i_payload;
1827 static int rtp_packetize_mp4a( sout_stream_t *p_stream, sout_stream_id_t *id,
1830 int i_max = id->i_mtu - 16; /* payload max in one packet */
1831 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1833 uint8_t *p_data = in->p_buffer;
1834 int i_data = in->i_buffer;
1837 for( i = 0; i < i_count; i++ )
1839 int i_payload = __MIN( i_max, i_data );
1840 block_t *out = block_New( p_stream, 16 + i_payload );
1842 /* rtp common header */
1843 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1844 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1846 /* AU headers length (bits) */
1847 out->p_buffer[12] = 0;
1848 out->p_buffer[13] = 2*8;
1849 /* for each AU length 13 bits + idx 3bits, */
1850 out->p_buffer[14] = ( in->i_buffer >> 5 )&0xff;
1851 out->p_buffer[15] = ( (in->i_buffer&0xff)<<3 )|0;
1853 memcpy( &out->p_buffer[16], p_data, i_payload );
1855 out->i_buffer = 16 + i_payload;
1856 out->i_dts = in->i_dts + i * in->i_length / i_count;
1857 out->i_length = in->i_length / i_count;
1859 rtp_packetize_send( id, out );
1861 p_data += i_payload;
1862 i_data -= i_payload;
1870 #define RTP_H263_HEADER_SIZE (2) // plen = 0
1871 #define RTP_H263_PAYLOAD_START (14) // plen = 0
1872 static int rtp_packetize_h263( sout_stream_t *p_stream, sout_stream_id_t *id,
1875 uint8_t *p_data = in->p_buffer;
1876 int i_data = in->i_buffer;
1878 int i_max = id->i_mtu - 12 - RTP_H263_HEADER_SIZE; /* payload max in one packet */
1881 int b_v_bit = 0; // no pesky error resilience
1882 int i_plen = 0; // normally plen=0 for PSC packet
1883 int i_pebit = 0; // because plen=0
1888 return VLC_EGENERIC;
1890 if( p_data[0] || p_data[1] )
1892 return VLC_EGENERIC;
1894 /* remove 2 leading 0 bytes */
1897 i_count = ( i_data + i_max - 1 ) / i_max;
1899 for( i = 0; i < i_count; i++ )
1901 int i_payload = __MIN( i_max, i_data );
1902 block_t *out = block_New( p_stream,
1903 RTP_H263_PAYLOAD_START + i_payload );
1904 b_p_bit = (i == 0) ? 1 : 0;
1905 h = ( b_p_bit << 10 )|
1910 /* rtp common header */
1911 //b_m_bit = 1; // always contains end of frame
1912 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1913 in->i_pts > 0 ? in->i_pts : in->i_dts );
1916 out->p_buffer[12] = ( h >> 8 )&0xff;
1917 out->p_buffer[13] = ( h )&0xff;
1918 memcpy( &out->p_buffer[RTP_H263_PAYLOAD_START], p_data, i_payload );
1920 out->i_buffer = RTP_H263_PAYLOAD_START + i_payload;
1921 out->i_dts = in->i_dts + i * in->i_length / i_count;
1922 out->i_length = in->i_length / i_count;
1924 rtp_packetize_send( id, out );
1926 p_data += i_payload;
1927 i_data -= i_payload;
1935 rtp_packetize_h264_nal( sout_stream_t *p_stream, sout_stream_id_t *id,
1936 const uint8_t *p_data, int i_data, int64_t i_pts,
1937 int64_t i_dts, vlc_bool_t b_last, int64_t i_length )
1939 const int i_max = id->i_mtu - 12; /* payload max in one packet */
1946 i_nal_hdr = p_data[3];
1947 i_nal_type = i_nal_hdr&0x1f;
1949 /* Skip start code */
1954 if( i_data <= i_max )
1956 /* Single NAL unit packet */
1957 block_t *out = block_New( p_stream, 12 + i_data );
1959 out->i_length = i_length;
1962 rtp_packetize_common( id, out, b_last, i_pts );
1963 out->i_buffer = 12 + i_data;
1965 memcpy( &out->p_buffer[12], p_data, i_data );
1967 rtp_packetize_send( id, out );
1971 /* FU-A Fragmentation Unit without interleaving */
1972 const int i_count = ( i_data-1 + i_max-2 - 1 ) / (i_max-2);
1978 for( i = 0; i < i_count; i++ )
1980 const int i_payload = __MIN( i_data, i_max-2 );
1981 block_t *out = block_New( p_stream, 12 + 2 + i_payload );
1982 out->i_dts = i_dts + i * i_length / i_count;
1983 out->i_length = i_length / i_count;
1986 rtp_packetize_common( id, out, (b_last && i_payload == i_data), i_pts );
1987 out->i_buffer = 14 + i_payload;
1990 out->p_buffer[12] = 0x00 | (i_nal_hdr & 0x60) | 28;
1992 out->p_buffer[13] = ( i == 0 ? 0x80 : 0x00 ) | ( (i == i_count-1) ? 0x40 : 0x00 ) | i_nal_type;
1993 memcpy( &out->p_buffer[14], p_data, i_payload );
1995 rtp_packetize_send( id, out );
1997 i_data -= i_payload;
1998 p_data += i_payload;
2004 static int rtp_packetize_h264( sout_stream_t *p_stream, sout_stream_id_t *id,
2007 const uint8_t *p_buffer = in->p_buffer;
2008 int i_buffer = in->i_buffer;
2010 while( i_buffer > 4 && ( p_buffer[0] != 0 || p_buffer[1] != 0 || p_buffer[2] != 1 ) )
2016 /* Split nal units */
2017 while( i_buffer > 4 )
2020 int i_size = i_buffer;
2021 int i_skip = i_buffer;
2023 /* search nal end */
2024 for( i_offset = 4; i_offset+2 < i_buffer ; i_offset++)
2026 if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 1 )
2028 /* we found another startcode */
2029 i_size = i_offset - ( p_buffer[i_offset-1] == 0 ? 1 : 0);
2034 /* TODO add STAP-A to remove a lot of overhead with small slice/sei/... */
2035 rtp_packetize_h264_nal( p_stream, id, p_buffer, i_size,
2036 (in->i_pts > 0 ? in->i_pts : in->i_dts), in->i_dts,
2037 (i_size >= i_buffer), in->i_length * i_size / in->i_buffer );
2045 static int rtp_packetize_amr( sout_stream_t *p_stream, sout_stream_id_t *id,
2048 int i_max = id->i_mtu - 14; /* payload max in one packet */
2049 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
2051 uint8_t *p_data = in->p_buffer;
2052 int i_data = in->i_buffer;
2055 /* Only supports octet-aligned mode */
2056 for( i = 0; i < i_count; i++ )
2058 int i_payload = __MIN( i_max, i_data );
2059 block_t *out = block_New( p_stream, 14 + i_payload );
2061 /* rtp common header */
2062 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
2063 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
2064 /* Payload header */
2065 out->p_buffer[12] = 0xF0; /* CMR */
2066 out->p_buffer[13] = p_data[0]&0x7C; /* ToC */ /* FIXME: frame type */
2068 /* FIXME: are we fed multiple frames ? */
2069 memcpy( &out->p_buffer[14], p_data+1, i_payload-1 );
2071 out->i_buffer = 14 + i_payload-1;
2072 out->i_dts = in->i_dts + i * in->i_length / i_count;
2073 out->i_length = in->i_length / i_count;
2075 rtp_packetize_send( id, out );
2077 p_data += i_payload;
2078 i_data -= i_payload;
2084 static int rtp_packetize_t140( sout_stream_t *p_stream, sout_stream_id_t *id,
2087 const size_t i_max = id->i_mtu - 12;
2088 const uint8_t *p_data = in->p_buffer;
2089 size_t i_data = in->i_buffer;
2091 for( unsigned i_packet = 0; i_data > 0; i_packet++ )
2093 size_t i_payload = i_data;
2095 /* Make sure we stop on an UTF-8 character boundary
2096 * (assuming the input is valid UTF-8) */
2097 if( i_data > i_max )
2101 while( ( p_data[i_payload] & 0xC0 ) == 0x80 )
2103 if( i_payload == 0 )
2104 return VLC_SUCCESS; /* fishy input! */
2110 block_t *out = block_New( p_stream, 12 + i_payload );
2114 rtp_packetize_common( id, out, 0, in->i_pts + i_packet );
2115 memcpy( out->p_buffer + 12, p_data, i_payload );
2117 out->i_buffer = 12 + i_payload;
2118 out->i_dts = out->i_pts;
2121 rtp_packetize_send( id, out );
2123 p_data += i_payload;
2124 i_data -= i_payload;
2130 /*****************************************************************************
2132 *****************************************************************************/
2134 /** Add an ES to a non-RTP muxed stream */
2135 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
2137 sout_input_t *p_input;
2138 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
2139 assert( p_mux != NULL );
2141 p_input = sout_MuxAddStream( p_mux, p_fmt );
2142 if( p_input == NULL )
2144 msg_Err( p_stream, "cannot add this stream to the muxer" );
2148 return (sout_stream_id_t *)p_input;
2152 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
2155 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
2156 assert( p_mux != NULL );
2158 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
2163 /** Remove an ES from a non-RTP muxed stream */
2164 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
2166 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
2167 assert( p_mux != NULL );
2169 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
2174 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
2175 const block_t *p_buffer )
2177 sout_stream_sys_t *p_sys = p_stream->p_sys;
2178 sout_stream_id_t *id = p_sys->es[0];
2180 int64_t i_dts = p_buffer->i_dts;
2182 uint8_t *p_data = p_buffer->p_buffer;
2183 unsigned int i_data = p_buffer->i_buffer;
2184 unsigned int i_max = id->i_mtu - 12;
2186 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
2190 unsigned int i_size;
2192 /* output complete packet */
2193 if( p_sys->packet &&
2194 p_sys->packet->i_buffer + i_data > i_max )
2196 rtp_packetize_send( id, p_sys->packet );
2197 p_sys->packet = NULL;
2200 if( p_sys->packet == NULL )
2202 /* allocate a new packet */
2203 p_sys->packet = block_New( p_stream, id->i_mtu );
2204 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
2205 p_sys->packet->i_dts = i_dts;
2206 p_sys->packet->i_length = p_buffer->i_length / i_packet;
2207 i_dts += p_sys->packet->i_length;
2210 i_size = __MIN( i_data,
2211 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
2213 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
2216 p_sys->packet->i_buffer += i_size;
2225 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
2228 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
2234 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
2236 p_next = p_buffer->p_next;
2237 block_Release( p_buffer );
2245 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
2247 sout_access_out_t *p_grab;
2249 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
2250 if( p_grab == NULL )
2253 p_grab->p_module = NULL;
2254 p_grab->p_sout = p_stream->p_sout;
2255 p_grab->psz_access = strdup( "grab" );
2256 p_grab->p_cfg = NULL;
2257 p_grab->psz_path = strdup( "" );
2258 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
2259 p_grab->pf_seek = NULL;
2260 p_grab->pf_write = AccessOutGrabberWrite;