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;
423 /* Check muxer type */
424 if( strncasecmp( psz, "ps", 2 )
425 && strncasecmp( psz, "mpeg1", 5 )
426 && strncasecmp( psz, "ts", 2 ) )
428 msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
430 vlc_mutex_destroy( &p_sys->lock_sdp );
431 vlc_mutex_destroy( &p_sys->lock_es );
436 p_sys->p_grab = GrabberCreate( p_stream );
437 p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
440 if( p_sys->p_mux == NULL )
442 msg_Err( p_stream, "cannot create muxer" );
443 sout_AccessOutDelete( p_sys->p_grab );
444 vlc_mutex_destroy( &p_sys->lock_sdp );
445 vlc_mutex_destroy( &p_sys->lock_es );
450 id = Add( p_stream, NULL );
453 sout_MuxDelete( p_sys->p_mux );
454 sout_AccessOutDelete( p_sys->p_grab );
455 vlc_mutex_destroy( &p_sys->lock_sdp );
456 vlc_mutex_destroy( &p_sys->lock_es );
461 p_sys->packet = NULL;
463 p_stream->pf_add = MuxAdd;
464 p_stream->pf_del = MuxDel;
465 p_stream->pf_send = MuxSend;
470 p_sys->p_grab = NULL;
472 p_stream->pf_add = Add;
473 p_stream->pf_del = Del;
474 p_stream->pf_send = Send;
477 psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
480 config_chain_t *p_cfg;
482 SDPHandleUrl( p_stream, psz );
484 for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
486 if( !strcmp( p_cfg->psz_name, "sdp" ) )
488 if( p_cfg->psz_value == NULL || *p_cfg->psz_value == '\0' )
491 /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
492 if( !strcmp( p_cfg->psz_value, psz ) )
495 SDPHandleUrl( p_stream, p_cfg->psz_value );
501 /* update p_sout->i_out_pace_nocontrol */
502 p_stream->p_sout->i_out_pace_nocontrol++;
507 /*****************************************************************************
509 *****************************************************************************/
510 static void Close( vlc_object_t * p_this )
512 sout_stream_t *p_stream = (sout_stream_t*)p_this;
513 sout_stream_sys_t *p_sys = p_stream->p_sys;
515 /* update p_sout->i_out_pace_nocontrol */
516 p_stream->p_sout->i_out_pace_nocontrol--;
520 assert( p_sys->i_es == 1 );
521 Del( p_stream, p_sys->es[0] );
523 sout_MuxDelete( p_sys->p_mux );
524 sout_AccessOutDelete( p_sys->p_grab );
527 block_Release( p_sys->packet );
529 if( p_sys->b_export_sap )
532 SapSetup( p_stream );
536 if( p_sys->rtsp != NULL )
537 RtspUnsetup( p_sys->rtsp );
539 vlc_mutex_destroy( &p_sys->lock_sdp );
540 vlc_mutex_destroy( &p_sys->lock_es );
542 if( p_sys->p_httpd_file )
543 httpd_FileDelete( p_sys->p_httpd_file );
545 if( p_sys->p_httpd_host )
546 httpd_HostDelete( p_sys->p_httpd_host );
548 free( p_sys->psz_session_name );
549 free( p_sys->psz_session_description );
550 free( p_sys->psz_session_url );
551 free( p_sys->psz_session_email );
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 getpeername( p_sys->es[0]->sinkv[0].rtp_fd, (struct sockaddr *)&dst,
680 /* Dummy destination address for RTSP */
681 memset (&dst, 0, sizeof( struct sockaddr_in ) );
682 dst.ss_family = AF_INET;
686 dstlen = sizeof( struct sockaddr_in );
689 psz_sdp = sdp_Start( p_sys->psz_session_name,
690 p_sys->psz_session_description,
691 p_sys->psz_session_url, p_sys->psz_session_email,
692 NULL, NULL, 0, (struct sockaddr *)&dst, dstlen );
693 if( psz_sdp == NULL )
696 /* TODO: a=source-filter */
698 /* FIXME: locking?! */
699 for( i = 0; i < p_sys->i_es; i++ )
701 sout_stream_id_t *id = p_sys->es[i];
702 const char *mime_major; /* major MIME type */
704 if( id->i_cat == AUDIO_ES )
705 mime_major = "audio";
707 if( id->i_cat == VIDEO_ES )
708 mime_major = "video";
712 sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", inclport * id->i_port,
713 id->i_payload_type, VLC_FALSE, id->i_bitrate,
714 id->psz_rtpmap, id->psz_fmtp);
716 if( rtsp_url != NULL )
717 sdp_AddAttribute ( &psz_sdp, "control", "/trackID=%d", i );
723 /*****************************************************************************
725 *****************************************************************************/
726 static int rtp_packetize_l16 ( sout_stream_t *, sout_stream_id_t *, block_t * );
727 static int rtp_packetize_l8 ( sout_stream_t *, sout_stream_id_t *, block_t * );
728 static int rtp_packetize_mpa ( sout_stream_t *, sout_stream_id_t *, block_t * );
729 static int rtp_packetize_mpv ( sout_stream_t *, sout_stream_id_t *, block_t * );
730 static int rtp_packetize_ac3 ( sout_stream_t *, sout_stream_id_t *, block_t * );
731 static int rtp_packetize_split( sout_stream_t *, sout_stream_id_t *, block_t * );
732 static int rtp_packetize_mp4a ( sout_stream_t *, sout_stream_id_t *, block_t * );
733 static int rtp_packetize_mp4a_latm ( sout_stream_t *, sout_stream_id_t *, block_t * );
734 static int rtp_packetize_h263 ( sout_stream_t *, sout_stream_id_t *, block_t * );
735 static int rtp_packetize_h264 ( sout_stream_t *, sout_stream_id_t *, block_t * );
736 static int rtp_packetize_amr ( sout_stream_t *, sout_stream_id_t *, block_t * );
738 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
740 static const char hex[16] = "0123456789abcdef";
743 for( i = 0; i < i_data; i++ )
745 s[2*i+0] = hex[(p_data[i]>>4)&0xf];
746 s[2*i+1] = hex[(p_data[i] )&0xf];
752 /** Add an ES as a new RTP stream */
753 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
755 /* NOTE: As a special case, if we use a non-RTP
756 * mux (TS/PS), then p_fmt is NULL. */
757 sout_stream_sys_t *p_sys = p_stream->p_sys;
758 sout_stream_id_t *id;
759 int i_port, cscov = -1;
762 id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
766 /* Choose the port */
771 if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
773 i_port = p_sys->i_port_audio;
774 p_sys->i_port_audio = 0;
777 if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
779 i_port = p_sys->i_port_video;
780 p_sys->i_port_video = 0;
785 if( p_sys->i_port != p_sys->i_port_audio
786 && p_sys->i_port != p_sys->i_port_video )
788 i_port = p_sys->i_port;
795 id->p_stream = p_stream;
797 id->i_timestamp_start = rand()&0xffffffff;
798 id->i_sequence = rand()&0xffff;
799 id->i_payload_type = p_sys->i_payload_type;
800 id->ssrc[0] = rand()&0xff;
801 id->ssrc[1] = rand()&0xff;
802 id->ssrc[2] = rand()&0xff;
803 id->ssrc[3] = rand()&0xff;
805 id->psz_rtpmap = NULL;
807 id->i_clock_rate = 90000; /* most common case */
811 id->i_cat = p_fmt->i_cat;
812 id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
816 id->i_cat = VIDEO_ES;
820 id->pf_packetize = NULL;
821 id->i_mtu = config_GetInt( p_stream, "mtu" );
822 if( id->i_mtu <= 12 + 16 )
823 id->i_mtu = 576 - 20 - 8; /* pessimistic */
825 msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
827 vlc_mutex_init( p_stream, &id->lock_sink );
833 (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
834 id->p_fifo = block_FifoNew( p_stream );
836 if( vlc_thread_create( id, "RTP send thread", ThreadSend,
837 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
839 vlc_mutex_destroy( &id->lock_sink );
840 vlc_object_destroy( id );
844 if( p_sys->psz_destination != NULL )
846 int ttl = (p_sys->i_ttl > 0) ? p_sys->i_ttl : -1;
847 int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
848 i_port, ttl, p_sys->proto );
852 msg_Err( p_stream, "cannot create RTP socket" );
853 vlc_thread_join( id );
854 vlc_mutex_destroy( &id->lock_sink );
855 vlc_object_destroy( id );
858 rtp_add_sink( id, fd );
863 char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
865 if( psz == NULL ) /* Uho! */
868 if( strncmp( psz, "ts", 2 ) == 0 )
870 id->i_payload_type = 33;
871 id->psz_rtpmap = strdup( "MP2T/90000" );
875 id->psz_rtpmap = strdup( "MP2P/90000" );
879 switch( p_fmt->i_codec )
881 case VLC_FOURCC( 's', '1', '6', 'b' ):
882 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
884 id->i_payload_type = 11;
886 else if( p_fmt->audio.i_channels == 2 &&
887 p_fmt->audio.i_rate == 44100 )
889 id->i_payload_type = 10;
891 if( asprintf( &id->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
892 p_fmt->audio.i_channels ) == -1 )
893 id->psz_rtpmap = NULL;
894 id->i_clock_rate = p_fmt->audio.i_rate;
895 id->pf_packetize = rtp_packetize_l16;
897 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
898 if( asprintf( &id->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
899 p_fmt->audio.i_channels ) == -1 )
900 id->psz_rtpmap = NULL;
901 id->i_clock_rate = p_fmt->audio.i_rate;
902 id->pf_packetize = rtp_packetize_l8;
904 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
905 id->i_payload_type = 14;
906 id->psz_rtpmap = strdup( "MPA/90000" );
907 id->pf_packetize = rtp_packetize_mpa;
909 case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
910 id->i_payload_type = 32;
911 id->psz_rtpmap = strdup( "MPV/90000" );
912 id->pf_packetize = rtp_packetize_mpv;
914 case VLC_FOURCC( 'a', '5', '2', ' ' ):
915 id->psz_rtpmap = strdup( "ac3/90000" );
916 id->pf_packetize = rtp_packetize_ac3;
918 case VLC_FOURCC( 'H', '2', '6', '3' ):
919 id->psz_rtpmap = strdup( "H263-1998/90000" );
920 id->pf_packetize = rtp_packetize_h263;
922 case VLC_FOURCC( 'h', '2', '6', '4' ):
923 id->psz_rtpmap = strdup( "H264/90000" );
924 id->pf_packetize = rtp_packetize_h264;
927 if( p_fmt->i_extra > 0 )
929 uint8_t *p_buffer = p_fmt->p_extra;
930 int i_buffer = p_fmt->i_extra;
931 char *p_64_sps = NULL;
932 char *p_64_pps = NULL;
935 while( i_buffer > 4 &&
936 p_buffer[0] == 0 && p_buffer[1] == 0 &&
937 p_buffer[2] == 0 && p_buffer[3] == 1 )
939 const int i_nal_type = p_buffer[4]&0x1f;
943 msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
946 for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
948 if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
950 /* we found another startcode */
955 if( i_nal_type == 7 )
957 p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
958 sprintf_hexa( hexa, &p_buffer[5], 3 );
960 else if( i_nal_type == 8 )
962 p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
968 if( p_64_sps && p_64_pps &&
969 ( asprintf( &id->psz_fmtp,
970 "packetization-mode=1;profile-level-id=%s;"
971 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
978 id->psz_fmtp = strdup( "packetization-mode=1" );
981 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
983 char hexa[2*p_fmt->i_extra +1];
985 id->psz_rtpmap = strdup( "MP4V-ES/90000" );
986 id->pf_packetize = rtp_packetize_split;
987 if( p_fmt->i_extra > 0 )
989 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
990 if( asprintf( &id->psz_fmtp,
991 "profile-level-id=3; config=%s;", hexa ) == -1 )
996 case VLC_FOURCC( 'm', 'p', '4', 'a' ):
998 id->i_clock_rate = p_fmt->audio.i_rate;
1002 char hexa[2*p_fmt->i_extra +1];
1004 if( asprintf( &id->psz_rtpmap, "mpeg4-generic/%d",
1005 p_fmt->audio.i_rate ) == -1 )
1006 id->psz_rtpmap = NULL;
1007 id->pf_packetize = rtp_packetize_mp4a;
1008 sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
1009 if( asprintf( &id->psz_fmtp,
1010 "streamtype=5; profile-level-id=15; "
1011 "mode=AAC-hbr; config=%s; SizeLength=13; "
1012 "IndexLength=3; IndexDeltaLength=3; Profile=1;",
1014 id->psz_fmtp = NULL;
1020 unsigned char config[6];
1021 unsigned int aacsrates[15] = {
1022 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
1023 16000, 12000, 11025, 8000, 7350, 0, 0 };
1025 for( i = 0; i < 15; i++ )
1026 if( p_fmt->audio.i_rate == aacsrates[i] )
1032 config[3]=p_fmt->audio.i_channels<<4;
1036 if( asprintf( &id->psz_rtpmap, "MP4A-LATM/%d/%d",
1037 p_fmt->audio.i_rate,
1038 p_fmt->audio.i_channels ) == -1)
1039 id->psz_rtpmap = NULL;
1040 id->pf_packetize = rtp_packetize_mp4a_latm;
1041 sprintf_hexa( hexa, config, 6 );
1042 if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
1043 "object=2; cpresent=0; config=%s", hexa ) == -1 )
1044 id->psz_fmtp = NULL;
1048 case VLC_FOURCC( 's', 'a', 'm', 'r' ):
1049 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1050 "AMR/8000/2" : "AMR/8000" );
1051 id->psz_fmtp = strdup( "octet-align=1" );
1052 id->i_clock_rate = p_fmt->audio.i_rate;
1053 id->pf_packetize = rtp_packetize_amr;
1055 case VLC_FOURCC( 's', 'a', 'w', 'b' ):
1056 id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
1057 "AMR-WB/16000/2" : "AMR-WB/16000" );
1058 id->psz_fmtp = strdup( "octet-align=1" );
1059 id->i_clock_rate = p_fmt->audio.i_rate;
1060 id->pf_packetize = rtp_packetize_amr;
1064 msg_Err( p_stream, "cannot add this stream (unsupported "
1065 "codec:%4.4s)", (char*)&p_fmt->i_codec );
1067 rtp_del_sink( id, id->sinkv[0].rtp_fd );
1068 vlc_thread_join( id );
1069 vlc_mutex_destroy( &id->lock_sink );
1070 vlc_object_destroy( id );
1075 cscov += 8 /* UDP */ + 12 /* RTP */;
1077 net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
1079 if( id->i_payload_type == p_sys->i_payload_type )
1080 p_sys->i_payload_type++;
1082 if( p_sys->rtsp != NULL )
1083 id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
1084 p_sys->psz_destination,
1085 p_sys->i_ttl, id->i_port, id->i_port + 1 );
1087 /* Update p_sys context */
1088 vlc_mutex_lock( &p_sys->lock_es );
1089 TAB_APPEND( p_sys->i_es, p_sys->es, id );
1090 vlc_mutex_unlock( &p_sys->lock_es );
1092 psz_sdp = SDPGenerate( p_stream, NULL );
1094 vlc_mutex_lock( &p_sys->lock_sdp );
1095 free( p_sys->psz_sdp );
1096 p_sys->psz_sdp = psz_sdp;
1097 vlc_mutex_unlock( &p_sys->lock_sdp );
1099 p_sys->i_sdp_version++;
1101 msg_Dbg( p_stream, "sdp=\n%s", p_sys->psz_sdp );
1103 /* Update SDP (sap/file) */
1104 if( p_sys->b_export_sap ) SapSetup( p_stream );
1105 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1107 vlc_object_attach( id, p_stream );
1111 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
1113 sout_stream_sys_t *p_sys = p_stream->p_sys;
1115 vlc_object_kill( id );
1117 vlc_mutex_lock( &p_sys->lock_es );
1118 TAB_REMOVE( p_sys->i_es, p_sys->es, id );
1119 vlc_mutex_unlock( &p_sys->lock_es );
1122 if( id->i_port > 0 )
1124 if( id->i_cat == AUDIO_ES && p_sys->i_port_audio == 0 )
1125 p_sys->i_port_audio = id->i_port;
1126 else if( id->i_cat == VIDEO_ES && p_sys->i_port_video == 0 )
1127 p_sys->i_port_video = id->i_port;
1130 free( id->psz_rtpmap );
1131 free( id->psz_fmtp );
1134 RtspDelId( p_sys->rtsp, id->rtsp_id );
1136 rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
1138 vlc_thread_join( id );
1139 vlc_mutex_destroy( &id->lock_sink );
1140 block_FifoRelease( id->p_fifo );
1142 /* Update SDP (sap/file) */
1143 if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
1144 if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
1146 vlc_object_detach( id );
1147 vlc_object_destroy( id );
1151 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
1156 assert( p_stream->p_sys->p_mux == NULL );
1158 while( p_buffer != NULL )
1160 p_next = p_buffer->p_next;
1161 if( id->pf_packetize( p_stream, id, p_buffer ) )
1164 block_Release( p_buffer );
1170 /****************************************************************************
1172 ****************************************************************************/
1173 static int SapSetup( sout_stream_t *p_stream )
1175 sout_stream_sys_t *p_sys = p_stream->p_sys;
1176 sout_instance_t *p_sout = p_stream->p_sout;
1177 announce_method_t *p_method = sout_SAPMethod();
1179 /* Remove the previous session */
1180 if( p_sys->p_session != NULL)
1182 sout_AnnounceUnRegister( p_sout, p_sys->p_session);
1183 sout_AnnounceSessionDestroy( p_sys->p_session );
1184 p_sys->p_session = NULL;
1187 if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
1189 p_sys->p_session = sout_AnnounceRegisterSDP( p_sout, SOUT_CFG_PREFIX,
1191 p_sys->psz_destination,
1195 sout_MethodRelease( p_method );
1199 /****************************************************************************
1201 ****************************************************************************/
1202 static int FileSetup( sout_stream_t *p_stream )
1204 sout_stream_sys_t *p_sys = p_stream->p_sys;
1207 if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
1209 msg_Err( p_stream, "cannot open file '%s' (%s)",
1210 p_sys->psz_sdp_file, strerror(errno) );
1211 return VLC_EGENERIC;
1214 fputs( p_sys->psz_sdp, f );
1220 /****************************************************************************
1222 ****************************************************************************/
1223 static int HttpCallback( httpd_file_sys_t *p_args,
1224 httpd_file_t *, uint8_t *p_request,
1225 uint8_t **pp_data, int *pi_data );
1227 static int HttpSetup( sout_stream_t *p_stream, vlc_url_t *url)
1229 sout_stream_sys_t *p_sys = p_stream->p_sys;
1231 p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
1232 url->i_port > 0 ? url->i_port : 80 );
1233 if( p_sys->p_httpd_host )
1235 p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
1236 url->psz_path ? url->psz_path : "/",
1239 HttpCallback, (void*)p_sys );
1241 if( p_sys->p_httpd_file == NULL )
1243 return VLC_EGENERIC;
1248 static int HttpCallback( httpd_file_sys_t *p_args,
1249 httpd_file_t *f, uint8_t *p_request,
1250 uint8_t **pp_data, int *pi_data )
1252 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
1254 vlc_mutex_lock( &p_sys->lock_sdp );
1255 if( p_sys->psz_sdp && *p_sys->psz_sdp )
1257 *pi_data = strlen( p_sys->psz_sdp );
1258 *pp_data = malloc( *pi_data );
1259 memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
1266 vlc_mutex_unlock( &p_sys->lock_sdp );
1271 /****************************************************************************
1273 ****************************************************************************/
1274 static void ThreadSend( vlc_object_t *p_this )
1276 sout_stream_id_t *id = (sout_stream_id_t *)p_this;
1277 unsigned i_caching = id->i_caching;
1279 int fd[5] = { -1, -1, -1, -1, -1 };
1287 fd[4] = open( "/dev/null", O_WRONLY );
1292 block_t *out = block_FifoGet( id->p_fifo );
1293 mtime_t i_date = out->i_dts + i_caching;
1294 ssize_t len = out->i_buffer;
1298 len = write( fd[1], out->p_buffer, len);
1300 continue; /* Uho - should not happen */
1304 vlc_mutex_lock( &id->lock_sink );
1305 for( int i = 0; i < id->sinkc; i++ )
1307 SendRTCP( id->sinkv[i].rtcp, out );
1310 tee( fd[0], fd[3], len, 0 );
1311 if( splice( fd[2], NULL, id->sinkv[i].rtp_fd, NULL, len,
1312 SPLICE_F_NONBLOCK ) >= 0 )
1316 splice( fd[2], NULL, fd[4], NULL, len, 0 );
1318 send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 );
1320 vlc_mutex_unlock( &id->lock_sink );
1322 block_Release( out );
1324 splice( fd[0], NULL, fd[4], NULL, len, 0 );
1329 for( unsigned i = 0; i < 5; i++ )
1334 static inline void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
1336 block_FifoPut( id->p_fifo, out );
1339 int rtp_add_sink( sout_stream_id_t *id, int fd )
1341 rtp_sink_t sink = { fd, NULL };
1342 sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP );
1343 if( sink.rtcp == NULL )
1344 msg_Err( id, "RTCP failed!" );
1346 vlc_mutex_lock( &id->lock_sink );
1347 INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
1348 vlc_mutex_unlock( &id->lock_sink );
1352 void rtp_del_sink( sout_stream_id_t *id, int fd )
1354 rtp_sink_t sink = { fd, NULL };
1356 /* NOTE: must be safe to use if fd is not included */
1357 vlc_mutex_lock( &id->lock_sink );
1358 for( int i = 0; i < id->sinkc; i++ )
1360 if (id->sinkv[i].rtp_fd == fd)
1362 sink = id->sinkv[i];
1363 REMOVE_ELEM( id->sinkv, id->sinkc, i );
1367 vlc_mutex_unlock( &id->lock_sink );
1369 CloseRTCP( sink.rtcp );
1370 net_Close( sink.rtp_fd );
1373 /****************************************************************************
1375 ****************************************************************************/
1376 static void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
1377 int b_marker, int64_t i_pts )
1379 uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / I64C(1000000);
1381 out->p_buffer[0] = 0x80;
1382 out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
1383 out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
1384 out->p_buffer[3] = ( id->i_sequence )&0xff;
1385 out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
1386 out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
1387 out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
1388 out->p_buffer[7] = ( i_timestamp )&0xff;
1390 memcpy( out->p_buffer + 8, id->ssrc, 4 );
1396 static int rtp_packetize_mpa( sout_stream_t *p_stream, sout_stream_id_t *id,
1399 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1400 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1402 uint8_t *p_data = in->p_buffer;
1403 int i_data = in->i_buffer;
1406 for( i = 0; i < i_count; i++ )
1408 int i_payload = __MIN( i_max, i_data );
1409 block_t *out = block_New( p_stream, 16 + i_payload );
1411 /* rtp common header */
1412 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1414 out->p_buffer[12] = 0;
1415 out->p_buffer[13] = 0;
1416 /* fragment offset in the current frame */
1417 out->p_buffer[14] = ( (i*i_max) >> 8 )&0xff;
1418 out->p_buffer[15] = ( (i*i_max) )&0xff;
1419 memcpy( &out->p_buffer[16], p_data, i_payload );
1421 out->i_buffer = 16 + i_payload;
1422 out->i_dts = in->i_dts + i * in->i_length / i_count;
1423 out->i_length = in->i_length / i_count;
1425 rtp_packetize_send( id, out );
1427 p_data += i_payload;
1428 i_data -= i_payload;
1435 static int rtp_packetize_mpv( sout_stream_t *p_stream, sout_stream_id_t *id,
1438 int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */
1439 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1441 uint8_t *p_data = in->p_buffer;
1442 int i_data = in->i_buffer;
1444 int b_sequence_start = 0;
1445 int i_temporal_ref = 0;
1446 int i_picture_coding_type = 0;
1447 int i_fbv = 0, i_bfc = 0, i_ffv = 0, i_ffc = 0;
1448 int b_start_slice = 0;
1450 /* preparse this packet to get some info */
1451 if( in->i_buffer > 4 )
1453 uint8_t *p = p_data;
1454 int i_rest = in->i_buffer;
1458 while( i_rest > 4 &&
1459 ( p[0] != 0x00 || p[1] != 0x00 || p[2] != 0x01 ) )
1473 /* sequence start code */
1474 b_sequence_start = 1;
1476 else if( *p == 0x00 && i_rest >= 4 )
1479 i_temporal_ref = ( p[1] << 2) |((p[2]>>6)&0x03);
1480 i_picture_coding_type = (p[2] >> 3)&0x07;
1482 if( i_rest >= 4 && ( i_picture_coding_type == 2 ||
1483 i_picture_coding_type == 3 ) )
1485 i_ffv = (p[3] >> 2)&0x01;
1486 i_ffc = ((p[3]&0x03) << 1)|((p[4]>>7)&0x01);
1487 if( i_rest > 4 && i_picture_coding_type == 3 )
1489 i_fbv = (p[4]>>6)&0x01;
1490 i_bfc = (p[4]>>3)&0x07;
1494 else if( *p <= 0xaf )
1501 for( i = 0; i < i_count; i++ )
1503 int i_payload = __MIN( i_max, i_data );
1504 block_t *out = block_New( p_stream,
1506 uint32_t h = ( i_temporal_ref << 16 )|
1507 ( b_sequence_start << 13 )|
1508 ( b_start_slice << 12 )|
1509 ( i == i_count - 1 ? 1 << 11 : 0 )|
1510 ( i_picture_coding_type << 8 )|
1511 ( i_fbv << 7 )|( i_bfc << 4 )|( i_ffv << 3 )|i_ffc;
1513 /* rtp common header */
1514 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1515 in->i_pts > 0 ? in->i_pts : in->i_dts );
1517 /* 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 */
1518 out->p_buffer[12] = ( h >> 24 )&0xff;
1519 out->p_buffer[13] = ( h >> 16 )&0xff;
1520 out->p_buffer[14] = ( h >> 8 )&0xff;
1521 out->p_buffer[15] = ( h )&0xff;
1523 memcpy( &out->p_buffer[16], p_data, i_payload );
1525 out->i_buffer = 16 + i_payload;
1526 out->i_dts = in->i_dts + i * in->i_length / i_count;
1527 out->i_length = in->i_length / i_count;
1529 rtp_packetize_send( id, out );
1531 p_data += i_payload;
1532 i_data -= i_payload;
1538 static int rtp_packetize_ac3( sout_stream_t *p_stream, sout_stream_id_t *id,
1541 int i_max = id->i_mtu - 12 - 2; /* payload max in one packet */
1542 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1544 uint8_t *p_data = in->p_buffer;
1545 int i_data = in->i_buffer;
1548 for( i = 0; i < i_count; i++ )
1550 int i_payload = __MIN( i_max, i_data );
1551 block_t *out = block_New( p_stream, 14 + i_payload );
1553 /* rtp common header */
1554 rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts );
1556 out->p_buffer[12] = 1;
1558 out->p_buffer[13] = 0x00;
1560 memcpy( &out->p_buffer[14], p_data, i_payload );
1562 out->i_buffer = 14 + i_payload;
1563 out->i_dts = in->i_dts + i * in->i_length / i_count;
1564 out->i_length = in->i_length / i_count;
1566 rtp_packetize_send( id, out );
1568 p_data += i_payload;
1569 i_data -= i_payload;
1575 static int rtp_packetize_split( sout_stream_t *p_stream, sout_stream_id_t *id,
1578 int i_max = id->i_mtu - 12; /* payload max in one packet */
1579 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1581 uint8_t *p_data = in->p_buffer;
1582 int i_data = in->i_buffer;
1585 for( i = 0; i < i_count; i++ )
1587 int i_payload = __MIN( i_max, i_data );
1588 block_t *out = block_New( p_stream, 12 + i_payload );
1590 /* rtp common header */
1591 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1592 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1593 memcpy( &out->p_buffer[12], p_data, i_payload );
1595 out->i_buffer = 12 + i_payload;
1596 out->i_dts = in->i_dts + i * in->i_length / i_count;
1597 out->i_length = in->i_length / i_count;
1599 rtp_packetize_send( id, out );
1601 p_data += i_payload;
1602 i_data -= i_payload;
1609 static int rtp_packetize_mp4a_latm( sout_stream_t *p_stream, sout_stream_id_t *id,
1612 int i_max = id->i_mtu - 14; /* payload max in one packet */
1613 int latmhdrsize = in->i_buffer / 0xff + 1;
1614 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1616 uint8_t *p_data = in->p_buffer, *p_header = NULL;
1617 int i_data = in->i_buffer;
1620 for( i = 0; i < i_count; i++ )
1622 int i_payload = __MIN( i_max, i_data );
1627 out = block_New( p_stream, 12 + latmhdrsize + i_payload );
1629 /* rtp common header */
1630 rtp_packetize_common( id, out, ((i == i_count - 1) ? 1 : 0),
1631 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1635 int tmp = in->i_buffer;
1637 p_header=out->p_buffer+12;
1647 memcpy( &out->p_buffer[12+latmhdrsize], p_data, i_payload );
1649 out->i_buffer = 12 + latmhdrsize + i_payload;
1650 out->i_dts = in->i_dts + i * in->i_length / i_count;
1651 out->i_length = in->i_length / i_count;
1653 rtp_packetize_send( id, out );
1655 p_data += i_payload;
1656 i_data -= i_payload;
1662 static int rtp_packetize_l16( sout_stream_t *p_stream, sout_stream_id_t *id,
1665 int i_max = id->i_mtu - 12; /* payload max in one packet */
1666 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1668 uint8_t *p_data = in->p_buffer;
1669 int i_data = in->i_buffer;
1674 int i_payload = (__MIN( i_max, i_data )/4)*4;
1675 block_t *out = block_New( p_stream, 12 + i_payload );
1677 /* rtp common header */
1678 rtp_packetize_common( id, out, 0,
1679 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1680 memcpy( &out->p_buffer[12], p_data, i_payload );
1682 out->i_buffer = 12 + i_payload;
1683 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1684 out->i_length = in->i_length / i_count;
1686 rtp_packetize_send( id, out );
1688 p_data += i_payload;
1689 i_data -= i_payload;
1696 static int rtp_packetize_l8( sout_stream_t *p_stream, sout_stream_id_t *id,
1699 int i_max = id->i_mtu - 12; /* payload max in one packet */
1700 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1702 uint8_t *p_data = in->p_buffer;
1703 int i_data = in->i_buffer;
1708 int i_payload = (__MIN( i_max, i_data )/2)*2;
1709 block_t *out = block_New( p_stream, 12 + i_payload );
1711 /* rtp common header */
1712 rtp_packetize_common( id, out, 0,
1713 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1714 memcpy( &out->p_buffer[12], p_data, i_payload );
1716 out->i_buffer = 12 + i_payload;
1717 out->i_dts = in->i_dts + i_packet * in->i_length / i_count;
1718 out->i_length = in->i_length / i_count;
1720 rtp_packetize_send( id, out );
1722 p_data += i_payload;
1723 i_data -= i_payload;
1730 static int rtp_packetize_mp4a( sout_stream_t *p_stream, sout_stream_id_t *id,
1733 int i_max = id->i_mtu - 16; /* payload max in one packet */
1734 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1736 uint8_t *p_data = in->p_buffer;
1737 int i_data = in->i_buffer;
1740 for( i = 0; i < i_count; i++ )
1742 int i_payload = __MIN( i_max, i_data );
1743 block_t *out = block_New( p_stream, 16 + i_payload );
1745 /* rtp common header */
1746 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1747 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1749 /* AU headers length (bits) */
1750 out->p_buffer[12] = 0;
1751 out->p_buffer[13] = 2*8;
1752 /* for each AU length 13 bits + idx 3bits, */
1753 out->p_buffer[14] = ( in->i_buffer >> 5 )&0xff;
1754 out->p_buffer[15] = ( (in->i_buffer&0xff)<<3 )|0;
1756 memcpy( &out->p_buffer[16], p_data, i_payload );
1758 out->i_buffer = 16 + i_payload;
1759 out->i_dts = in->i_dts + i * in->i_length / i_count;
1760 out->i_length = in->i_length / i_count;
1762 rtp_packetize_send( id, out );
1764 p_data += i_payload;
1765 i_data -= i_payload;
1773 #define RTP_H263_HEADER_SIZE (2) // plen = 0
1774 #define RTP_H263_PAYLOAD_START (14) // plen = 0
1775 static int rtp_packetize_h263( sout_stream_t *p_stream, sout_stream_id_t *id,
1778 uint8_t *p_data = in->p_buffer;
1779 int i_data = in->i_buffer;
1781 int i_max = id->i_mtu - 12 - RTP_H263_HEADER_SIZE; /* payload max in one packet */
1784 int b_v_bit = 0; // no pesky error resilience
1785 int i_plen = 0; // normally plen=0 for PSC packet
1786 int i_pebit = 0; // because plen=0
1791 return VLC_EGENERIC;
1793 if( p_data[0] || p_data[1] )
1795 return VLC_EGENERIC;
1797 /* remove 2 leading 0 bytes */
1800 i_count = ( i_data + i_max - 1 ) / i_max;
1802 for( i = 0; i < i_count; i++ )
1804 int i_payload = __MIN( i_max, i_data );
1805 block_t *out = block_New( p_stream,
1806 RTP_H263_PAYLOAD_START + i_payload );
1807 b_p_bit = (i == 0) ? 1 : 0;
1808 h = ( b_p_bit << 10 )|
1813 /* rtp common header */
1814 //b_m_bit = 1; // always contains end of frame
1815 rtp_packetize_common( id, out, (i == i_count - 1)?1:0,
1816 in->i_pts > 0 ? in->i_pts : in->i_dts );
1819 out->p_buffer[12] = ( h >> 8 )&0xff;
1820 out->p_buffer[13] = ( h )&0xff;
1821 memcpy( &out->p_buffer[RTP_H263_PAYLOAD_START], p_data, i_payload );
1823 out->i_buffer = RTP_H263_PAYLOAD_START + i_payload;
1824 out->i_dts = in->i_dts + i * in->i_length / i_count;
1825 out->i_length = in->i_length / i_count;
1827 rtp_packetize_send( id, out );
1829 p_data += i_payload;
1830 i_data -= i_payload;
1838 rtp_packetize_h264_nal( sout_stream_t *p_stream, sout_stream_id_t *id,
1839 const uint8_t *p_data, int i_data, int64_t i_pts,
1840 int64_t i_dts, vlc_bool_t b_last, int64_t i_length )
1842 const int i_max = id->i_mtu - 12; /* payload max in one packet */
1849 i_nal_hdr = p_data[3];
1850 i_nal_type = i_nal_hdr&0x1f;
1852 /* Skip start code */
1857 if( i_data <= i_max )
1859 /* Single NAL unit packet */
1860 block_t *out = block_New( p_stream, 12 + i_data );
1862 out->i_length = i_length;
1865 rtp_packetize_common( id, out, b_last, i_pts );
1866 out->i_buffer = 12 + i_data;
1868 memcpy( &out->p_buffer[12], p_data, i_data );
1870 rtp_packetize_send( id, out );
1874 /* FU-A Fragmentation Unit without interleaving */
1875 const int i_count = ( i_data-1 + i_max-2 - 1 ) / (i_max-2);
1881 for( i = 0; i < i_count; i++ )
1883 const int i_payload = __MIN( i_data, i_max-2 );
1884 block_t *out = block_New( p_stream, 12 + 2 + i_payload );
1885 out->i_dts = i_dts + i * i_length / i_count;
1886 out->i_length = i_length / i_count;
1889 rtp_packetize_common( id, out, (b_last && i_payload == i_data), i_pts );
1890 out->i_buffer = 14 + i_payload;
1893 out->p_buffer[12] = 0x00 | (i_nal_hdr & 0x60) | 28;
1895 out->p_buffer[13] = ( i == 0 ? 0x80 : 0x00 ) | ( (i == i_count-1) ? 0x40 : 0x00 ) | i_nal_type;
1896 memcpy( &out->p_buffer[14], p_data, i_payload );
1898 rtp_packetize_send( id, out );
1900 i_data -= i_payload;
1901 p_data += i_payload;
1907 static int rtp_packetize_h264( sout_stream_t *p_stream, sout_stream_id_t *id,
1910 const uint8_t *p_buffer = in->p_buffer;
1911 int i_buffer = in->i_buffer;
1913 while( i_buffer > 4 && ( p_buffer[0] != 0 || p_buffer[1] != 0 || p_buffer[2] != 1 ) )
1919 /* Split nal units */
1920 while( i_buffer > 4 )
1923 int i_size = i_buffer;
1924 int i_skip = i_buffer;
1926 /* search nal end */
1927 for( i_offset = 4; i_offset+2 < i_buffer ; i_offset++)
1929 if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 1 )
1931 /* we found another startcode */
1932 i_size = i_offset - ( p_buffer[i_offset-1] == 0 ? 1 : 0);
1937 /* TODO add STAP-A to remove a lot of overhead with small slice/sei/... */
1938 rtp_packetize_h264_nal( p_stream, id, p_buffer, i_size,
1939 (in->i_pts > 0 ? in->i_pts : in->i_dts), in->i_dts,
1940 (i_size >= i_buffer), in->i_length * i_size / in->i_buffer );
1948 static int rtp_packetize_amr( sout_stream_t *p_stream, sout_stream_id_t *id,
1951 int i_max = id->i_mtu - 14; /* payload max in one packet */
1952 int i_count = ( in->i_buffer + i_max - 1 ) / i_max;
1954 uint8_t *p_data = in->p_buffer;
1955 int i_data = in->i_buffer;
1958 /* Only supports octet-aligned mode */
1959 for( i = 0; i < i_count; i++ )
1961 int i_payload = __MIN( i_max, i_data );
1962 block_t *out = block_New( p_stream, 14 + i_payload );
1964 /* rtp common header */
1965 rtp_packetize_common( id, out, ((i == i_count - 1)?1:0),
1966 (in->i_pts > 0 ? in->i_pts : in->i_dts) );
1967 /* Payload header */
1968 out->p_buffer[12] = 0xF0; /* CMR */
1969 out->p_buffer[13] = p_data[0]&0x7C; /* ToC */ /* FIXME: frame type */
1971 /* FIXME: are we fed multiple frames ? */
1972 memcpy( &out->p_buffer[14], p_data+1, i_payload-1 );
1974 out->i_buffer = 14 + i_payload-1;
1975 out->i_dts = in->i_dts + i * in->i_length / i_count;
1976 out->i_length = in->i_length / i_count;
1978 rtp_packetize_send( id, out );
1980 p_data += i_payload;
1981 i_data -= i_payload;
1987 /*****************************************************************************
1989 *****************************************************************************/
1991 /** Add an ES to a non-RTP muxed stream */
1992 static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
1994 sout_input_t *p_input;
1995 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
1996 assert( p_mux != NULL );
1998 p_input = sout_MuxAddStream( p_mux, p_fmt );
1999 if( p_input == NULL )
2001 msg_Err( p_stream, "cannot add this stream to the muxer" );
2005 return (sout_stream_id_t *)p_input;
2009 static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
2012 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
2013 assert( p_mux != NULL );
2015 sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
2020 /** Remove an ES from a non-RTP muxed stream */
2021 static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
2023 sout_mux_t *p_mux = p_stream->p_sys->p_mux;
2024 assert( p_mux != NULL );
2026 sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
2031 static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
2032 const block_t *p_buffer )
2034 sout_stream_sys_t *p_sys = p_stream->p_sys;
2035 sout_stream_id_t *id = p_sys->es[0];
2037 int64_t i_dts = p_buffer->i_dts;
2039 uint8_t *p_data = p_buffer->p_buffer;
2040 unsigned int i_data = p_buffer->i_buffer;
2041 unsigned int i_max = id->i_mtu - 12;
2043 unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
2047 unsigned int i_size;
2049 /* output complete packet */
2050 if( p_sys->packet &&
2051 p_sys->packet->i_buffer + i_data > i_max )
2053 rtp_packetize_send( id, p_sys->packet );
2054 p_sys->packet = NULL;
2057 if( p_sys->packet == NULL )
2059 /* allocate a new packet */
2060 p_sys->packet = block_New( p_stream, id->i_mtu );
2061 rtp_packetize_common( id, p_sys->packet, 1, i_dts );
2062 p_sys->packet->i_dts = i_dts;
2063 p_sys->packet->i_length = p_buffer->i_length / i_packet;
2064 i_dts += p_sys->packet->i_length;
2067 i_size = __MIN( i_data,
2068 (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
2070 memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
2073 p_sys->packet->i_buffer += i_size;
2082 static int AccessOutGrabberWrite( sout_access_out_t *p_access,
2085 sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
2091 AccessOutGrabberWriteBuffer( p_stream, p_buffer );
2093 p_next = p_buffer->p_next;
2094 block_Release( p_buffer );
2102 static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
2104 sout_access_out_t *p_grab;
2106 p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
2107 if( p_grab == NULL )
2110 p_grab->p_module = NULL;
2111 p_grab->p_sout = p_stream->p_sout;
2112 p_grab->psz_access = strdup( "grab" );
2113 p_grab->p_cfg = NULL;
2114 p_grab->psz_path = strdup( "" );
2115 p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
2116 p_grab->pf_seek = NULL;
2117 p_grab->pf_write = AccessOutGrabberWrite;