rtp.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:57k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * rtp.c: rtp stream output module
- *****************************************************************************
- * Copyright (C) 2003-2004 the VideoLAN team
- * Copyright © 2007-2008 Rémi Denis-Courmont
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_sout.h>
- #include <vlc_block.h>
- #include <vlc_httpd.h>
- #include <vlc_url.h>
- #include <vlc_network.h>
- #include <vlc_charset.h>
- #include <vlc_strings.h>
- #include <vlc_rand.h>
- #include <srtp.h>
- #include "rtp.h"
- #ifdef HAVE_UNISTD_H
- # include <sys/types.h>
- # include <unistd.h>
- # include <fcntl.h>
- # include <sys/stat.h>
- #endif
- #ifdef HAVE_LINUX_DCCP_H
- # include <linux/dccp.h>
- #endif
- #ifndef IPPROTO_DCCP
- # define IPPROTO_DCCP 33
- #endif
- #ifndef IPPROTO_UDPLITE
- # define IPPROTO_UDPLITE 136
- #endif
- #include <errno.h>
- #include <assert.h>
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define DEST_TEXT N_("Destination")
- #define DEST_LONGTEXT N_(
- "This is the output URL that will be used." )
- #define SDP_TEXT N_("SDP")
- #define SDP_LONGTEXT N_(
- "This allows you to specify how the SDP (Session Descriptor) for this RTP "
- "session will be made available. You must use an url: http://location to "
- "access the SDP via HTTP, rtsp://location for RTSP access, and sap:// "
- "for the SDP to be announced via SAP." )
- #define SAP_TEXT N_("SAP announcing")
- #define SAP_LONGTEXT N_("Announce this session with SAP.")
- #define MUX_TEXT N_("Muxer")
- #define MUX_LONGTEXT N_(
- "This allows you to specify the muxer used for the streaming output. "
- "Default is to use no muxer (standard RTP stream)." )
- #define NAME_TEXT N_("Session name")
- #define NAME_LONGTEXT N_(
- "This is the name of the session that will be announced in the SDP "
- "(Session Descriptor)." )
- #define DESC_TEXT N_("Session description")
- #define DESC_LONGTEXT N_(
- "This allows you to give a short description with details about the stream, "
- "that will be announced in the SDP (Session Descriptor)." )
- #define URL_TEXT N_("Session URL")
- #define URL_LONGTEXT N_(
- "This allows you to give an URL with more details about the stream "
- "(often the website of the streaming organization), that will "
- "be announced in the SDP (Session Descriptor)." )
- #define EMAIL_TEXT N_("Session email")
- #define EMAIL_LONGTEXT N_(
- "This allows you to give a contact mail address for the stream, that will "
- "be announced in the SDP (Session Descriptor)." )
- #define PHONE_TEXT N_("Session phone number")
- #define PHONE_LONGTEXT N_(
- "This allows you to give a contact telephone number for the stream, that will "
- "be announced in the SDP (Session Descriptor)." )
- #define PORT_TEXT N_("Port")
- #define PORT_LONGTEXT N_(
- "This allows you to specify the base port for the RTP streaming." )
- #define PORT_AUDIO_TEXT N_("Audio port")
- #define PORT_AUDIO_LONGTEXT N_(
- "This allows you to specify the default audio port for the RTP streaming." )
- #define PORT_VIDEO_TEXT N_("Video port")
- #define PORT_VIDEO_LONGTEXT N_(
- "This allows you to specify the default video port for the RTP streaming." )
- #define TTL_TEXT N_("Hop limit (TTL)")
- #define TTL_LONGTEXT N_(
- "This is the hop limit (also known as "Time-To-Live" or TTL) of "
- "the multicast packets sent by the stream output (-1 = use operating "
- "system built-in default).")
- #define RTCP_MUX_TEXT N_("RTP/RTCP multiplexing")
- #define RTCP_MUX_LONGTEXT N_(
- "This sends and receives RTCP packet multiplexed over the same port "
- "as RTP packets." )
- #define PROTO_TEXT N_("Transport protocol")
- #define PROTO_LONGTEXT N_(
- "This selects which transport protocol to use for RTP." )
- #define SRTP_KEY_TEXT N_("SRTP key (hexadecimal)")
- #define SRTP_KEY_LONGTEXT N_(
- "RTP packets will be integrity-protected and ciphered "
- "with this Secure RTP master shared secret key.")
- #define SRTP_SALT_TEXT N_("SRTP salt (hexadecimal)")
- #define SRTP_SALT_LONGTEXT N_(
- "Secure RTP requires a (non-secret) master salt value.")
- static const char *const ppsz_protos[] = {
- "dccp", "sctp", "tcp", "udp", "udplite",
- };
- static const char *const ppsz_protocols[] = {
- "DCCP", "SCTP", "TCP", "UDP", "UDP-Lite",
- };
- #define RFC3016_TEXT N_("MP4A LATM")
- #define RFC3016_LONGTEXT N_(
- "This allows you to stream MPEG4 LATM audio streams (see RFC3016)." )
- static int Open ( vlc_object_t * );
- static void Close( vlc_object_t * );
- #define SOUT_CFG_PREFIX "sout-rtp-"
- #define MAX_EMPTY_BLOCKS 200
- vlc_module_begin ()
- set_shortname( N_("RTP"))
- set_description( N_("RTP stream output") )
- set_capability( "sout stream", 0 )
- add_shortcut( "rtp" )
- set_category( CAT_SOUT )
- set_subcategory( SUBCAT_SOUT_STREAM )
- add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
- DEST_LONGTEXT, true )
- add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT,
- SDP_LONGTEXT, true )
- add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
- MUX_LONGTEXT, true )
- add_bool( SOUT_CFG_PREFIX "sap", false, NULL, SAP_TEXT, SAP_LONGTEXT,
- true )
- add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT,
- NAME_LONGTEXT, true )
- add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT,
- DESC_LONGTEXT, true )
- add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
- URL_LONGTEXT, true )
- add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT,
- EMAIL_LONGTEXT, true )
- add_string( SOUT_CFG_PREFIX "phone", "", NULL, PHONE_TEXT,
- PHONE_LONGTEXT, true )
- add_string( SOUT_CFG_PREFIX "proto", "udp", NULL, PROTO_TEXT,
- PROTO_LONGTEXT, false )
- change_string_list( ppsz_protos, ppsz_protocols, NULL )
- add_integer( SOUT_CFG_PREFIX "port", 5004, NULL, PORT_TEXT,
- PORT_LONGTEXT, true )
- add_integer( SOUT_CFG_PREFIX "port-audio", 0, NULL, PORT_AUDIO_TEXT,
- PORT_AUDIO_LONGTEXT, true )
- add_integer( SOUT_CFG_PREFIX "port-video", 0, NULL, PORT_VIDEO_TEXT,
- PORT_VIDEO_LONGTEXT, true )
- add_integer( SOUT_CFG_PREFIX "ttl", -1, NULL, TTL_TEXT,
- TTL_LONGTEXT, true )
- add_bool( SOUT_CFG_PREFIX "rtcp-mux", false, NULL,
- RTCP_MUX_TEXT, RTCP_MUX_LONGTEXT, false )
- add_string( SOUT_CFG_PREFIX "key", "", NULL,
- SRTP_KEY_TEXT, SRTP_KEY_LONGTEXT, false )
- add_string( SOUT_CFG_PREFIX "salt", "", NULL,
- SRTP_SALT_TEXT, SRTP_SALT_LONGTEXT, false )
- add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT,
- RFC3016_LONGTEXT, false )
- set_callbacks( Open, Close )
- vlc_module_end ()
- /*****************************************************************************
- * Exported prototypes
- *****************************************************************************/
- static const char *const ppsz_sout_options[] = {
- "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux",
- "sap", "description", "url", "email", "phone",
- "proto", "rtcp-mux", "key", "salt",
- "mp4a-latm", NULL
- };
- static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
- static int Del ( sout_stream_t *, sout_stream_id_t * );
- static int Send( sout_stream_t *, sout_stream_id_t *,
- block_t* );
- static sout_stream_id_t *MuxAdd ( sout_stream_t *, es_format_t * );
- static int MuxDel ( sout_stream_t *, sout_stream_id_t * );
- static int MuxSend( sout_stream_t *, sout_stream_id_t *,
- block_t* );
- static sout_access_out_t *GrabberCreate( sout_stream_t *p_sout );
- static void* ThreadSend( vlc_object_t *p_this );
- static void SDPHandleUrl( sout_stream_t *, const char * );
- static int SapSetup( sout_stream_t *p_stream );
- static int FileSetup( sout_stream_t *p_stream );
- static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t * );
- struct sout_stream_sys_t
- {
- /* SDP */
- char *psz_sdp;
- vlc_mutex_t lock_sdp;
- /* SDP to disk */
- bool b_export_sdp_file;
- char *psz_sdp_file;
- /* SDP via SAP */
- bool b_export_sap;
- session_descriptor_t *p_session;
- /* SDP via HTTP */
- httpd_host_t *p_httpd_host;
- httpd_file_t *p_httpd_file;
- /* RTSP */
- rtsp_stream_t *rtsp;
- /* */
- char *psz_destination;
- uint32_t payload_bitmap;
- uint16_t i_port;
- uint16_t i_port_audio;
- uint16_t i_port_video;
- uint8_t proto;
- bool rtcp_mux;
- int i_ttl:9;
- bool b_latm;
- /* in case we do TS/PS over rtp */
- sout_mux_t *p_mux;
- sout_access_out_t *p_grab;
- block_t *packet;
- /* */
- vlc_mutex_t lock_es;
- int i_es;
- sout_stream_id_t **es;
- };
- typedef int (*pf_rtp_packetizer_t)( sout_stream_id_t *, block_t * );
- typedef struct rtp_sink_t
- {
- int rtp_fd;
- rtcp_sender_t *rtcp;
- } rtp_sink_t;
- struct sout_stream_id_t
- {
- VLC_COMMON_MEMBERS
- sout_stream_t *p_stream;
- /* rtp field */
- uint32_t i_timestamp;
- uint16_t i_sequence;
- uint8_t i_payload_type;
- uint8_t ssrc[4];
- /* for sdp */
- const char *psz_enc;
- char *psz_fmtp;
- int i_clock_rate;
- int i_port;
- int i_cat;
- int i_channels;
- int i_bitrate;
- /* Packetizer specific fields */
- int i_mtu;
- srtp_session_t *srtp;
- pf_rtp_packetizer_t pf_packetize;
- /* Packets sinks */
- vlc_mutex_t lock_sink;
- int sinkc;
- rtp_sink_t *sinkv;
- rtsp_stream_id_t *rtsp_id;
- int *listen_fd;
- block_fifo_t *p_fifo;
- int64_t i_caching;
- };
- /*****************************************************************************
- * Open:
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- sout_stream_t *p_stream = (sout_stream_t*)p_this;
- sout_instance_t *p_sout = p_stream->p_sout;
- sout_stream_sys_t *p_sys = NULL;
- config_chain_t *p_cfg = NULL;
- char *psz;
- bool b_rtsp = false;
- config_ChainParse( p_stream, SOUT_CFG_PREFIX,
- ppsz_sout_options, p_stream->p_cfg );
- p_sys = malloc( sizeof( sout_stream_sys_t ) );
- if( p_sys == NULL )
- return VLC_ENOMEM;
- p_sys->psz_destination = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
- p_sys->i_port = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port" );
- p_sys->i_port_audio = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-audio" );
- p_sys->i_port_video = var_GetInteger( p_stream, SOUT_CFG_PREFIX "port-video" );
- p_sys->rtcp_mux = var_GetBool( p_stream, SOUT_CFG_PREFIX "rtcp-mux" );
- p_sys->psz_sdp_file = NULL;
- if( p_sys->i_port_audio && p_sys->i_port_video == p_sys->i_port_audio )
- {
- msg_Err( p_stream, "audio and video RTP port must be distinct" );
- free( p_sys->psz_destination );
- free( p_sys );
- return VLC_EGENERIC;
- }
- for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
- {
- if( !strcmp( p_cfg->psz_name, "sdp" )
- && ( p_cfg->psz_value != NULL )
- && !strncasecmp( p_cfg->psz_value, "rtsp:", 5 ) )
- {
- b_rtsp = true;
- break;
- }
- }
- if( !b_rtsp )
- {
- psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
- if( psz != NULL )
- {
- if( !strncasecmp( psz, "rtsp:", 5 ) )
- b_rtsp = true;
- free( psz );
- }
- }
- /* Transport protocol */
- p_sys->proto = IPPROTO_UDP;
- psz = var_GetNonEmptyString (p_stream, SOUT_CFG_PREFIX"proto");
- if ((psz == NULL) || !strcasecmp (psz, "udp"))
- (void)0; /* default */
- else
- if (!strcasecmp (psz, "dccp"))
- {
- p_sys->proto = IPPROTO_DCCP;
- p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
- }
- #if 0
- else
- if (!strcasecmp (psz, "sctp"))
- {
- p_sys->proto = IPPROTO_TCP;
- p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
- }
- #endif
- #if 0
- else
- if (!strcasecmp (psz, "tcp"))
- {
- p_sys->proto = IPPROTO_TCP;
- p_sys->rtcp_mux = true; /* Force RTP/RTCP mux */
- }
- #endif
- else
- if (!strcasecmp (psz, "udplite") || !strcasecmp (psz, "udp-lite"))
- p_sys->proto = IPPROTO_UDPLITE;
- else
- msg_Warn (p_this, "unknown or unsupported transport protocol "%s"",
- psz);
- free (psz);
- var_Create (p_this, "dccp-service", VLC_VAR_STRING);
- if( ( p_sys->psz_destination == NULL ) && !b_rtsp )
- {
- msg_Err( p_stream, "missing destination and not in RTSP mode" );
- free( p_sys );
- return VLC_EGENERIC;
- }
- p_sys->i_ttl = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ttl" );
- if( p_sys->i_ttl == -1 )
- {
- /* Normally, we should let the default hop limit up to the core,
- * but we have to know it to build our SDP properly, which is why
- * we ask the core. FIXME: broken when neither sout-rtp-ttl nor
- * ttl are set. */
- p_sys->i_ttl = config_GetInt( p_stream, "ttl" );
- }
- p_sys->b_latm = var_GetBool( p_stream, SOUT_CFG_PREFIX "mp4a-latm" );
- p_sys->payload_bitmap = 0;
- p_sys->i_es = 0;
- p_sys->es = NULL;
- p_sys->rtsp = NULL;
- p_sys->psz_sdp = NULL;
- p_sys->b_export_sap = false;
- p_sys->b_export_sdp_file = false;
- p_sys->p_session = NULL;
- p_sys->p_httpd_host = NULL;
- p_sys->p_httpd_file = NULL;
- p_stream->p_sys = p_sys;
- vlc_mutex_init( &p_sys->lock_sdp );
- vlc_mutex_init( &p_sys->lock_es );
- psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
- if( psz != NULL )
- {
- sout_stream_id_t *id;
- /* Check muxer type */
- if( strncasecmp( psz, "ps", 2 )
- && strncasecmp( psz, "mpeg1", 5 )
- && strncasecmp( psz, "ts", 2 ) )
- {
- msg_Err( p_stream, "unsupported muxer type for RTP (only TS/PS)" );
- free( psz );
- vlc_mutex_destroy( &p_sys->lock_sdp );
- vlc_mutex_destroy( &p_sys->lock_es );
- free( p_sys->psz_destination );
- free( p_sys );
- return VLC_EGENERIC;
- }
- p_sys->p_grab = GrabberCreate( p_stream );
- p_sys->p_mux = sout_MuxNew( p_sout, psz, p_sys->p_grab );
- free( psz );
- if( p_sys->p_mux == NULL )
- {
- msg_Err( p_stream, "cannot create muxer" );
- sout_AccessOutDelete( p_sys->p_grab );
- vlc_mutex_destroy( &p_sys->lock_sdp );
- vlc_mutex_destroy( &p_sys->lock_es );
- free( p_sys->psz_destination );
- free( p_sys );
- return VLC_EGENERIC;
- }
- id = Add( p_stream, NULL );
- if( id == NULL )
- {
- sout_MuxDelete( p_sys->p_mux );
- sout_AccessOutDelete( p_sys->p_grab );
- vlc_mutex_destroy( &p_sys->lock_sdp );
- vlc_mutex_destroy( &p_sys->lock_es );
- free( p_sys->psz_destination );
- free( p_sys );
- return VLC_EGENERIC;
- }
- p_sys->packet = NULL;
- p_stream->pf_add = MuxAdd;
- p_stream->pf_del = MuxDel;
- p_stream->pf_send = MuxSend;
- }
- else
- {
- p_sys->p_mux = NULL;
- p_sys->p_grab = NULL;
- p_stream->pf_add = Add;
- p_stream->pf_del = Del;
- p_stream->pf_send = Send;
- }
- if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
- SDPHandleUrl( p_stream, "sap" );
- psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "sdp" );
- if( psz != NULL )
- {
- config_chain_t *p_cfg;
- SDPHandleUrl( p_stream, psz );
- for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
- {
- if( !strcmp( p_cfg->psz_name, "sdp" ) )
- {
- if( p_cfg->psz_value == NULL || *p_cfg->psz_value == ' ' )
- continue;
- /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */
- if( !strcmp( p_cfg->psz_value, psz ) )
- continue;
- SDPHandleUrl( p_stream, p_cfg->psz_value );
- }
- }
- free( psz );
- }
- /* update p_sout->i_out_pace_nocontrol */
- p_stream->p_sout->i_out_pace_nocontrol++;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close:
- *****************************************************************************/
- static void Close( vlc_object_t * p_this )
- {
- sout_stream_t *p_stream = (sout_stream_t*)p_this;
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- /* update p_sout->i_out_pace_nocontrol */
- p_stream->p_sout->i_out_pace_nocontrol--;
- if( p_sys->p_mux )
- {
- assert( p_sys->i_es == 1 );
- sout_MuxDelete( p_sys->p_mux );
- Del( p_stream, p_sys->es[0] );
- sout_AccessOutDelete( p_sys->p_grab );
- if( p_sys->packet )
- {
- block_Release( p_sys->packet );
- }
- if( p_sys->b_export_sap )
- {
- p_sys->p_mux = NULL;
- SapSetup( p_stream );
- }
- }
- if( p_sys->rtsp != NULL )
- RtspUnsetup( p_sys->rtsp );
- vlc_mutex_destroy( &p_sys->lock_sdp );
- vlc_mutex_destroy( &p_sys->lock_es );
- if( p_sys->p_httpd_file )
- httpd_FileDelete( p_sys->p_httpd_file );
- if( p_sys->p_httpd_host )
- httpd_HostDelete( p_sys->p_httpd_host );
- free( p_sys->psz_sdp );
- if( p_sys->b_export_sdp_file )
- {
- #ifdef HAVE_UNISTD_H
- unlink( p_sys->psz_sdp_file );
- #endif
- free( p_sys->psz_sdp_file );
- }
- free( p_sys->psz_destination );
- free( p_sys );
- }
- /*****************************************************************************
- * SDPHandleUrl:
- *****************************************************************************/
- static void SDPHandleUrl( sout_stream_t *p_stream, const char *psz_url )
- {
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- vlc_url_t url;
- vlc_UrlParse( &url, psz_url, 0 );
- if( url.psz_protocol && !strcasecmp( url.psz_protocol, "http" ) )
- {
- if( p_sys->p_httpd_file )
- {
- msg_Err( p_stream, "you can use sdp=http:// only once" );
- goto out;
- }
- if( HttpSetup( p_stream, &url ) )
- {
- msg_Err( p_stream, "cannot export SDP as HTTP" );
- }
- }
- else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "rtsp" ) )
- {
- if( p_sys->rtsp != NULL )
- {
- msg_Err( p_stream, "you can use sdp=rtsp:// only once" );
- goto out;
- }
- /* FIXME test if destination is multicast or no destination at all */
- p_sys->rtsp = RtspSetup( p_stream, &url );
- if( p_sys->rtsp == NULL )
- msg_Err( p_stream, "cannot export SDP as RTSP" );
- else
- if( p_sys->p_mux != NULL )
- {
- sout_stream_id_t *id = p_sys->es[0];
- id->rtsp_id = RtspAddId( p_sys->rtsp, id, 0, GetDWBE( id->ssrc ),
- p_sys->psz_destination, p_sys->i_ttl,
- id->i_port, id->i_port + 1 );
- }
- }
- else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) ||
- ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) )
- {
- p_sys->b_export_sap = true;
- SapSetup( p_stream );
- }
- else if( url.psz_protocol && !strcasecmp( url.psz_protocol, "file" ) )
- {
- if( p_sys->b_export_sdp_file )
- {
- msg_Err( p_stream, "you can use sdp=file:// only once" );
- goto out;
- }
- p_sys->b_export_sdp_file = true;
- psz_url = &psz_url[5];
- if( psz_url[0] == '/' && psz_url[1] == '/' )
- psz_url += 2;
- p_sys->psz_sdp_file = strdup( psz_url );
- decode_URI( p_sys->psz_sdp_file ); /* FIXME? */
- FileSetup( p_stream );
- }
- else
- {
- msg_Warn( p_stream, "unknown protocol for SDP (%s)",
- url.psz_protocol );
- }
- out:
- vlc_UrlClean( &url );
- }
- /*****************************************************************************
- * SDPGenerate
- *****************************************************************************/
- /*static*/
- char *SDPGenerate( const sout_stream_t *p_stream, const char *rtsp_url )
- {
- const sout_stream_sys_t *p_sys = p_stream->p_sys;
- char *psz_sdp;
- struct sockaddr_storage dst;
- socklen_t dstlen;
- int i;
- /*
- * When we have a fixed destination (typically when we do multicast),
- * we need to put the actual port numbers in the SDP.
- * When there is no fixed destination, we only support RTSP unicast
- * on-demand setup, so we should rather let the clients decide which ports
- * to use.
- * When there is both a fixed destination and RTSP unicast, we need to
- * put port numbers used by the fixed destination, otherwise the SDP would
- * become totally incorrect for multicast use. It should be noted that
- * port numbers from SDP with RTSP are only "recommendation" from the
- * server to the clients (per RFC2326), so only broken clients will fail
- * to handle this properly. There is no solution but to use two differents
- * output chain with two different RTSP URLs if you need to handle this
- * scenario.
- */
- int inclport;
- if( p_sys->psz_destination != NULL )
- {
- inclport = 1;
- /* Oh boy, this is really ugly! (+ race condition on lock_es) */
- dstlen = sizeof( dst );
- if( p_sys->es[0]->listen_fd != NULL )
- getsockname( p_sys->es[0]->listen_fd[0],
- (struct sockaddr *)&dst, &dstlen );
- else
- getpeername( p_sys->es[0]->sinkv[0].rtp_fd,
- (struct sockaddr *)&dst, &dstlen );
- }
- else
- {
- inclport = 0;
- /* Dummy destination address for RTSP */
- memset (&dst, 0, sizeof( struct sockaddr_in ) );
- dst.ss_family = AF_INET;
- #ifdef HAVE_SA_LEN
- dst.ss_len =
- #endif
- dstlen = sizeof( struct sockaddr_in );
- }
- psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_stream ), SOUT_CFG_PREFIX,
- NULL, 0, (struct sockaddr *)&dst, dstlen );
- if( psz_sdp == NULL )
- return NULL;
- /* TODO: a=source-filter */
- if( p_sys->rtcp_mux )
- sdp_AddAttribute( &psz_sdp, "rtcp-mux", NULL );
- if( rtsp_url != NULL )
- sdp_AddAttribute ( &psz_sdp, "control", "%s", rtsp_url );
- /* FIXME: locking?! */
- for( i = 0; i < p_sys->i_es; i++ )
- {
- sout_stream_id_t *id = p_sys->es[i];
- const char *mime_major; /* major MIME type */
- const char *proto = "RTP/AVP"; /* protocol */
- switch( id->i_cat )
- {
- case VIDEO_ES:
- mime_major = "video";
- break;
- case AUDIO_ES:
- mime_major = "audio";
- break;
- case SPU_ES:
- mime_major = "text";
- break;
- default:
- continue;
- }
- if( rtsp_url == NULL )
- {
- switch( p_sys->proto )
- {
- case IPPROTO_UDP:
- break;
- case IPPROTO_TCP:
- proto = "TCP/RTP/AVP";
- break;
- case IPPROTO_DCCP:
- proto = "DCCP/RTP/AVP";
- break;
- case IPPROTO_UDPLITE:
- continue;
- }
- }
- sdp_AddMedia( &psz_sdp, mime_major, proto, inclport * id->i_port,
- id->i_payload_type, false, id->i_bitrate,
- id->psz_enc, id->i_clock_rate, id->i_channels,
- id->psz_fmtp);
- if( !p_sys->rtcp_mux && (id->i_port & 1) ) /* cf RFC4566 §5.14 */
- sdp_AddAttribute ( &psz_sdp, "rtcp", "%u", id->i_port + 1 );
- if( rtsp_url != NULL )
- {
- assert( strlen( rtsp_url ) > 0 );
- bool addslash = ( rtsp_url[strlen( rtsp_url ) - 1] != '/' );
- sdp_AddAttribute ( &psz_sdp, "control",
- addslash ? "%s/trackID=%u" : "%strackID=%u",
- rtsp_url, i );
- }
- else
- {
- if( id->listen_fd != NULL )
- sdp_AddAttribute( &psz_sdp, "setup", "passive" );
- if( p_sys->proto == IPPROTO_DCCP )
- sdp_AddAttribute( &psz_sdp, "dccp-service-code",
- "SC:RTP%c", toupper( mime_major[0] ) );
- }
- }
- return psz_sdp;
- }
- /*****************************************************************************
- * RTP mux
- *****************************************************************************/
- static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
- {
- static const char hex[16] = "0123456789abcdef";
- int i;
- for( i = 0; i < i_data; i++ )
- {
- s[2*i+0] = hex[(p_data[i]>>4)&0xf];
- s[2*i+1] = hex[(p_data[i] )&0xf];
- }
- s[2*i_data] = ' ';
- }
- /**
- * Shrink the MTU down to a fixed packetization time (for audio).
- */
- static void
- rtp_set_ptime (sout_stream_id_t *id, unsigned ptime_ms, size_t bytes)
- {
- /* Samples per second */
- size_t spl = (id->i_clock_rate - 1) * ptime_ms / 1000 + 1;
- bytes *= id->i_channels;
- spl *= bytes;
- if (spl < rtp_mtu (id)) /* MTU is big enough for ptime */
- id->i_mtu = 12 + spl;
- else /* MTU is too small for ptime, align to a sample boundary */
- id->i_mtu = 12 + (((id->i_mtu - 12) / bytes) * bytes);
- }
- /** Add an ES as a new RTP stream */
- static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
- {
- /* NOTE: As a special case, if we use a non-RTP
- * mux (TS/PS), then p_fmt is NULL. */
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- sout_stream_id_t *id;
- int cscov = -1;
- char *psz_sdp;
- if (0xffffffff == p_sys->payload_bitmap)
- {
- msg_Err (p_stream, "too many RTP elementary streams");
- return NULL;
- }
- /* Choose the port */
- uint16_t i_port = 0;
- if( p_fmt == NULL )
- ;
- else
- if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 )
- i_port = p_sys->i_port_audio;
- else
- if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 )
- i_port = p_sys->i_port_video;
- /* We do not need the ES lock (p_sys->lock_es) here, because this is the
- * only one thread that can *modify* the ES table. The ES lock protects
- * the other threads from our modifications (TAB_APPEND, TAB_REMOVE). */
- for (int i = 0; i_port && (i < p_sys->i_es); i++)
- if (i_port == p_sys->es[i]->i_port)
- i_port = 0; /* Port already in use! */
- for (uint16_t p = p_sys->i_port; i_port == 0; p += 2)
- {
- if (p == 0)
- {
- msg_Err (p_stream, "too many RTP elementary streams");
- return NULL;
- }
- i_port = p;
- for (int i = 0; i_port && (i < p_sys->i_es); i++)
- if (p == p_sys->es[i]->i_port)
- i_port = 0;
- }
- id = vlc_object_create( p_stream, sizeof( sout_stream_id_t ) );
- if( id == NULL )
- return NULL;
- vlc_object_attach( id, p_stream );
- id->p_stream = p_stream;
- id->i_timestamp = 0; /* It will be filled when the first packet is sent */
- /* Look for free dymanic payload type */
- id->i_payload_type = 96;
- while (p_sys->payload_bitmap & (1 << (id->i_payload_type - 96)))
- id->i_payload_type++;
- assert (id->i_payload_type < 128);
- vlc_rand_bytes (&id->i_sequence, sizeof (id->i_sequence));
- vlc_rand_bytes (id->ssrc, sizeof (id->ssrc));
- id->psz_enc = NULL;
- id->psz_fmtp = NULL;
- id->i_clock_rate = 90000; /* most common case for video */
- id->i_channels = 0;
- id->i_port = i_port;
- if( p_fmt != NULL )
- {
- id->i_cat = p_fmt->i_cat;
- if( p_fmt->i_cat == AUDIO_ES )
- {
- id->i_clock_rate = p_fmt->audio.i_rate;
- id->i_channels = p_fmt->audio.i_channels;
- }
- id->i_bitrate = p_fmt->i_bitrate/1000; /* Stream bitrate in kbps */
- }
- else
- {
- id->i_cat = VIDEO_ES;
- id->i_bitrate = 0;
- }
- id->i_mtu = config_GetInt( p_stream, "mtu" );
- if( id->i_mtu <= 12 + 16 )
- id->i_mtu = 576 - 20 - 8; /* pessimistic */
- msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu );
- id->srtp = NULL;
- id->pf_packetize = NULL;
- char *key = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"key");
- if (key)
- {
- id->srtp = srtp_create (SRTP_ENCR_AES_CM, SRTP_AUTH_HMAC_SHA1, 10,
- SRTP_PRF_AES_CM, SRTP_RCC_MODE1);
- if (id->srtp == NULL)
- {
- free (key);
- goto error;
- }
- char *salt = var_CreateGetNonEmptyString (p_stream, SOUT_CFG_PREFIX"salt");
- errno = srtp_setkeystring (id->srtp, key, salt ? salt : "");
- free (salt);
- free (key);
- if (errno)
- {
- msg_Err (p_stream, "bad SRTP key/salt combination (%m)");
- goto error;
- }
- id->i_sequence = 0; /* FIXME: awful hack for libvlc_srtp */
- }
- vlc_mutex_init( &id->lock_sink );
- id->sinkc = 0;
- id->sinkv = NULL;
- id->rtsp_id = NULL;
- id->p_fifo = NULL;
- id->listen_fd = NULL;
- id->i_caching =
- (int64_t)1000 * var_GetInteger( p_stream, SOUT_CFG_PREFIX "caching");
- if( p_sys->psz_destination != NULL )
- switch( p_sys->proto )
- {
- case IPPROTO_DCCP:
- {
- const char *code;
- switch (id->i_cat)
- {
- case VIDEO_ES: code = "RTPV"; break;
- case AUDIO_ES: code = "RTPARTPV"; break;
- case SPU_ES: code = "RTPTRTPV"; break;
- default: code = "RTPORTPV"; break;
- }
- var_SetString (p_stream, "dccp-service", code);
- } /* fall through */
- case IPPROTO_TCP:
- id->listen_fd = net_Listen( VLC_OBJECT(p_stream),
- p_sys->psz_destination, i_port,
- p_sys->proto );
- if( id->listen_fd == NULL )
- {
- msg_Err( p_stream, "passive COMEDIA RTP socket failed" );
- goto error;
- }
- break;
- default:
- {
- int ttl = (p_sys->i_ttl >= 0) ? p_sys->i_ttl : -1;
- int fd = net_ConnectDgram( p_stream, p_sys->psz_destination,
- i_port, ttl, p_sys->proto );
- if( fd == -1 )
- {
- msg_Err( p_stream, "cannot create RTP socket" );
- goto error;
- }
- rtp_add_sink( id, fd, p_sys->rtcp_mux );
- }
- }
- if( p_fmt == NULL )
- {
- char *psz = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
- if( psz == NULL ) /* Uho! */
- ;
- else
- if( strncmp( psz, "ts", 2 ) == 0 )
- {
- id->i_payload_type = 33;
- id->psz_enc = "MP2T";
- }
- else
- {
- id->psz_enc = "MP2P";
- }
- free( psz );
- }
- else
- switch( p_fmt->i_codec )
- {
- case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
- if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
- id->i_payload_type = 0;
- id->psz_enc = "PCMU";
- id->pf_packetize = rtp_packetize_split;
- rtp_set_ptime (id, 20, 1);
- break;
- case VLC_FOURCC( 'a', 'l', 'a', 'w' ):
- if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 8000 )
- id->i_payload_type = 8;
- id->psz_enc = "PCMA";
- id->pf_packetize = rtp_packetize_split;
- rtp_set_ptime (id, 20, 1);
- break;
- case VLC_FOURCC( 's', '1', '6', 'b' ):
- if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
- {
- id->i_payload_type = 11;
- }
- else if( p_fmt->audio.i_channels == 2 &&
- p_fmt->audio.i_rate == 44100 )
- {
- id->i_payload_type = 10;
- }
- id->psz_enc = "L16";
- id->pf_packetize = rtp_packetize_split;
- rtp_set_ptime (id, 20, 2);
- break;
- case VLC_FOURCC( 'u', '8', ' ', ' ' ):
- id->psz_enc = "L8";
- id->pf_packetize = rtp_packetize_split;
- rtp_set_ptime (id, 20, 1);
- break;
- case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
- case VLC_FOURCC( 'm', 'p', '3', ' ' ):
- id->i_payload_type = 14;
- id->psz_enc = "MPA";
- id->i_clock_rate = 90000; /* not 44100 */
- id->pf_packetize = rtp_packetize_mpa;
- break;
- case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
- id->i_payload_type = 32;
- id->psz_enc = "MPV";
- id->pf_packetize = rtp_packetize_mpv;
- break;
- case VLC_FOURCC( 'G', '7', '2', '6' ):
- case VLC_FOURCC( 'g', '7', '2', '6' ):
- switch( p_fmt->i_bitrate / 1000 )
- {
- case 16:
- id->psz_enc = "G726-16";
- id->pf_packetize = rtp_packetize_g726_16;
- break;
- case 24:
- id->psz_enc = "G726-24";
- id->pf_packetize = rtp_packetize_g726_24;
- break;
- case 32:
- id->psz_enc = "G726-32";
- id->pf_packetize = rtp_packetize_g726_32;
- break;
- case 40:
- id->psz_enc = "G726-40";
- id->pf_packetize = rtp_packetize_g726_40;
- break;
- default:
- msg_Err( p_stream, "cannot add this stream (unsupported "
- "G.726 bit rate: %u)", p_fmt->i_bitrate );
- goto error;
- }
- break;
- case VLC_FOURCC( 'a', '5', '2', ' ' ):
- id->psz_enc = "ac3";
- id->pf_packetize = rtp_packetize_ac3;
- break;
- case VLC_FOURCC( 'H', '2', '6', '3' ):
- id->psz_enc = "H263-1998";
- id->pf_packetize = rtp_packetize_h263;
- break;
- case VLC_FOURCC( 'h', '2', '6', '4' ):
- id->psz_enc = "H264";
- id->pf_packetize = rtp_packetize_h264;
- id->psz_fmtp = NULL;
- if( p_fmt->i_extra > 0 )
- {
- uint8_t *p_buffer = p_fmt->p_extra;
- int i_buffer = p_fmt->i_extra;
- char *p_64_sps = NULL;
- char *p_64_pps = NULL;
- char hexa[6+1];
- while( i_buffer > 4 &&
- p_buffer[0] == 0 && p_buffer[1] == 0 &&
- p_buffer[2] == 0 && p_buffer[3] == 1 )
- {
- const int i_nal_type = p_buffer[4]&0x1f;
- int i_offset;
- int i_size = 0;
- msg_Dbg( p_stream, "we found a startcode for NAL with TYPE:%d", i_nal_type );
- i_size = i_buffer;
- for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
- {
- if( !memcmp (p_buffer + i_offset, "x00x00x00x01", 4 ) )
- {
- /* we found another startcode */
- i_size = i_offset;
- break;
- }
- }
- if( i_nal_type == 7 )
- {
- p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
- sprintf_hexa( hexa, &p_buffer[5], 3 );
- }
- else if( i_nal_type == 8 )
- {
- p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
- }
- i_buffer -= i_size;
- p_buffer += i_size;
- }
- /* */
- if( p_64_sps && p_64_pps &&
- ( asprintf( &id->psz_fmtp,
- "packetization-mode=1;profile-level-id=%s;"
- "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
- p_64_pps ) == -1 ) )
- id->psz_fmtp = NULL;
- free( p_64_sps );
- free( p_64_pps );
- }
- if( !id->psz_fmtp )
- id->psz_fmtp = strdup( "packetization-mode=1" );
- break;
- case VLC_FOURCC( 'm', 'p', '4', 'v' ):
- {
- char hexa[2*p_fmt->i_extra +1];
- id->psz_enc = "MP4V-ES";
- id->pf_packetize = rtp_packetize_split;
- if( p_fmt->i_extra > 0 )
- {
- sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
- if( asprintf( &id->psz_fmtp,
- "profile-level-id=3; config=%s;", hexa ) == -1 )
- id->psz_fmtp = NULL;
- }
- break;
- }
- case VLC_FOURCC( 'm', 'p', '4', 'a' ):
- {
- if(!p_sys->b_latm)
- {
- char hexa[2*p_fmt->i_extra +1];
- id->psz_enc = "mpeg4-generic";
- id->pf_packetize = rtp_packetize_mp4a;
- sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra );
- if( asprintf( &id->psz_fmtp,
- "streamtype=5; profile-level-id=15; "
- "mode=AAC-hbr; config=%s; SizeLength=13; "
- "IndexLength=3; IndexDeltaLength=3; Profile=1;",
- hexa ) == -1 )
- id->psz_fmtp = NULL;
- }
- else
- {
- char hexa[13];
- int i;
- unsigned char config[6];
- unsigned int aacsrates[15] = {
- 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
- 16000, 12000, 11025, 8000, 7350, 0, 0 };
- for( i = 0; i < 15; i++ )
- if( p_fmt->audio.i_rate == aacsrates[i] )
- break;
- config[0]=0x40;
- config[1]=0;
- config[2]=0x20|i;
- config[3]=p_fmt->audio.i_channels<<4;
- config[4]=0x3f;
- config[5]=0xc0;
- id->psz_enc = "MP4A-LATM";
- id->pf_packetize = rtp_packetize_mp4a_latm;
- sprintf_hexa( hexa, config, 6 );
- if( asprintf( &id->psz_fmtp, "profile-level-id=15; "
- "object=2; cpresent=0; config=%s", hexa ) == -1 )
- id->psz_fmtp = NULL;
- }
- break;
- }
- case VLC_FOURCC( 's', 'a', 'm', 'r' ):
- id->psz_enc = "AMR";
- id->psz_fmtp = strdup( "octet-align=1" );
- id->pf_packetize = rtp_packetize_amr;
- break;
- case VLC_FOURCC( 's', 'a', 'w', 'b' ):
- id->psz_enc = "AMR-WB";
- id->psz_fmtp = strdup( "octet-align=1" );
- id->pf_packetize = rtp_packetize_amr;
- break;
- case VLC_FOURCC( 's', 'p', 'x', ' ' ):
- id->psz_enc = "SPEEX";
- id->pf_packetize = rtp_packetize_spx;
- break;
- case VLC_FOURCC( 't', '1', '4', '0' ):
- id->psz_enc = "t140" ;
- id->i_clock_rate = 1000;
- id->pf_packetize = rtp_packetize_t140;
- break;
- default:
- msg_Err( p_stream, "cannot add this stream (unsupported "
- "codec: %4.4s)", (char*)&p_fmt->i_codec );
- goto error;
- }
- if (id->i_payload_type >= 96)
- /* Mark dynamic payload type in use */
- p_sys->payload_bitmap |= 1 << (id->i_payload_type - 96);
- #if 0 /* No payload formats sets this at the moment */
- if( cscov != -1 )
- cscov += 8 /* UDP */ + 12 /* RTP */;
- if( id->sinkc > 0 )
- net_SetCSCov( id->sinkv[0].rtp_fd, cscov, -1 );
- #endif
- if( p_sys->rtsp != NULL )
- id->rtsp_id = RtspAddId( p_sys->rtsp, id, p_sys->i_es,
- GetDWBE( id->ssrc ),
- p_sys->psz_destination,
- p_sys->i_ttl, id->i_port, id->i_port + 1 );
- id->p_fifo = block_FifoNew();
- if( vlc_thread_create( id, "RTP send thread", ThreadSend,
- VLC_THREAD_PRIORITY_HIGHEST ) )
- goto error;
- /* Update p_sys context */
- vlc_mutex_lock( &p_sys->lock_es );
- TAB_APPEND( p_sys->i_es, p_sys->es, id );
- vlc_mutex_unlock( &p_sys->lock_es );
- psz_sdp = SDPGenerate( p_stream, NULL );
- vlc_mutex_lock( &p_sys->lock_sdp );
- free( p_sys->psz_sdp );
- p_sys->psz_sdp = psz_sdp;
- vlc_mutex_unlock( &p_sys->lock_sdp );
- msg_Dbg( p_stream, "sdp=n%s", p_sys->psz_sdp );
- /* Update SDP (sap/file) */
- if( p_sys->b_export_sap ) SapSetup( p_stream );
- if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
- return id;
- error:
- Del( p_stream, id );
- return NULL;
- }
- static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
- {
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- if( id->p_fifo != NULL )
- {
- vlc_object_kill( id );
- vlc_thread_join( id );
- block_FifoRelease( id->p_fifo );
- }
- vlc_mutex_lock( &p_sys->lock_es );
- TAB_REMOVE( p_sys->i_es, p_sys->es, id );
- vlc_mutex_unlock( &p_sys->lock_es );
- /* Release dynamic payload type */
- if (id->i_payload_type >= 96)
- p_sys->payload_bitmap &= ~(1 << (id->i_payload_type - 96));
- free( id->psz_fmtp );
- if( id->rtsp_id )
- RtspDelId( p_sys->rtsp, id->rtsp_id );
- if( id->sinkc > 0 )
- rtp_del_sink( id, id->sinkv[0].rtp_fd ); /* sink for explicit dst= */
- if( id->listen_fd != NULL )
- net_ListenClose( id->listen_fd );
- if( id->srtp != NULL )
- srtp_destroy( id->srtp );
- vlc_mutex_destroy( &id->lock_sink );
- /* Update SDP (sap/file) */
- if( p_sys->b_export_sap && !p_sys->p_mux ) SapSetup( p_stream );
- if( p_sys->b_export_sdp_file ) FileSetup( p_stream );
- vlc_object_detach( id );
- vlc_object_release( id );
- return VLC_SUCCESS;
- }
- static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *p_buffer )
- {
- block_t *p_next;
- assert( p_stream->p_sys->p_mux == NULL );
- (void)p_stream;
- while( p_buffer != NULL )
- {
- p_next = p_buffer->p_next;
- if( id->pf_packetize( id, p_buffer ) )
- break;
- block_Release( p_buffer );
- p_buffer = p_next;
- }
- return VLC_SUCCESS;
- }
- /****************************************************************************
- * SAP:
- ****************************************************************************/
- static int SapSetup( sout_stream_t *p_stream )
- {
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- sout_instance_t *p_sout = p_stream->p_sout;
- /* Remove the previous session */
- if( p_sys->p_session != NULL)
- {
- sout_AnnounceUnRegister( p_sout, p_sys->p_session);
- p_sys->p_session = NULL;
- }
- if( ( p_sys->i_es > 0 || p_sys->p_mux ) && p_sys->psz_sdp && *p_sys->psz_sdp )
- {
- announce_method_t *p_method = sout_SAPMethod();
- p_sys->p_session = sout_AnnounceRegisterSDP( p_sout,
- p_sys->psz_sdp,
- p_sys->psz_destination,
- p_method );
- sout_MethodRelease( p_method );
- }
- return VLC_SUCCESS;
- }
- /****************************************************************************
- * File:
- ****************************************************************************/
- static int FileSetup( sout_stream_t *p_stream )
- {
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- FILE *f;
- if( p_sys->psz_sdp == NULL )
- return VLC_EGENERIC; /* too early */
- if( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL )
- {
- msg_Err( p_stream, "cannot open file '%s' (%m)",
- p_sys->psz_sdp_file );
- return VLC_EGENERIC;
- }
- fputs( p_sys->psz_sdp, f );
- fclose( f );
- return VLC_SUCCESS;
- }
- /****************************************************************************
- * HTTP:
- ****************************************************************************/
- static int HttpCallback( httpd_file_sys_t *p_args,
- httpd_file_t *, uint8_t *p_request,
- uint8_t **pp_data, int *pi_data );
- static int HttpSetup( sout_stream_t *p_stream, const vlc_url_t *url)
- {
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- p_sys->p_httpd_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host,
- url->i_port > 0 ? url->i_port : 80 );
- if( p_sys->p_httpd_host )
- {
- p_sys->p_httpd_file = httpd_FileNew( p_sys->p_httpd_host,
- url->psz_path ? url->psz_path : "/",
- "application/sdp",
- NULL, NULL, NULL,
- HttpCallback, (void*)p_sys );
- }
- if( p_sys->p_httpd_file == NULL )
- {
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- static int HttpCallback( httpd_file_sys_t *p_args,
- httpd_file_t *f, uint8_t *p_request,
- uint8_t **pp_data, int *pi_data )
- {
- VLC_UNUSED(f); VLC_UNUSED(p_request);
- sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_args;
- vlc_mutex_lock( &p_sys->lock_sdp );
- if( p_sys->psz_sdp && *p_sys->psz_sdp )
- {
- *pi_data = strlen( p_sys->psz_sdp );
- *pp_data = malloc( *pi_data );
- memcpy( *pp_data, p_sys->psz_sdp, *pi_data );
- }
- else
- {
- *pp_data = NULL;
- *pi_data = 0;
- }
- vlc_mutex_unlock( &p_sys->lock_sdp );
- return VLC_SUCCESS;
- }
- /****************************************************************************
- * RTP send
- ****************************************************************************/
- static void* ThreadSend( vlc_object_t *p_this )
- {
- #ifdef WIN32
- # define ECONNREFUSED WSAECONNREFUSED
- # define ENOPROTOOPT WSAENOPROTOOPT
- # define EHOSTUNREACH WSAEHOSTUNREACH
- # define ENETUNREACH WSAENETUNREACH
- # define ENETDOWN WSAENETDOWN
- # define ENOBUFS WSAENOBUFS
- # define EAGAIN WSAEWOULDBLOCK
- # define EWOULDBLOCK WSAEWOULDBLOCK
- #endif
- sout_stream_id_t *id = (sout_stream_id_t *)p_this;
- unsigned i_caching = id->i_caching;
- for (;;)
- {
- block_t *out = block_FifoGet( id->p_fifo );
- block_cleanup_push (out);
- if( id->srtp )
- { /* FIXME: this is awfully inefficient */
- size_t len = out->i_buffer;
- out = block_Realloc( out, 0, len + 10 );
- out->i_buffer = len;
- int canc = vlc_savecancel ();
- int val = srtp_send( id->srtp, out->p_buffer, &len, len + 10 );
- vlc_restorecancel (canc);
- if( val )
- {
- errno = val;
- msg_Dbg( id, "SRTP sending error: %m" );
- block_Release( out );
- out = NULL;
- }
- else
- out->i_buffer = len;
- }
- if (out)
- mwait (out->i_dts + i_caching);
- vlc_cleanup_pop ();
- if (out == NULL)
- continue;
- ssize_t len = out->i_buffer;
- int canc = vlc_savecancel ();
- vlc_mutex_lock( &id->lock_sink );
- unsigned deadc = 0; /* How many dead sockets? */
- int deadv[id->sinkc]; /* Dead sockets list */
- for( int i = 0; i < id->sinkc; i++ )
- {
- if( !id->srtp ) /* FIXME: SRTCP support */
- SendRTCP( id->sinkv[i].rtcp, out );
- if( send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 ) >= 0 )
- continue;
- switch( net_errno )
- {
- /* Soft errors (e.g. ICMP): */
- case ECONNREFUSED: /* Port unreachable */
- case ENOPROTOOPT:
- #ifdef EPROTO
- case EPROTO: /* Protocol unreachable */
- #endif
- case EHOSTUNREACH: /* Host unreachable */
- case ENETUNREACH: /* Network unreachable */
- case ENETDOWN: /* Entire network down */
- send( id->sinkv[i].rtp_fd, out->p_buffer, len, 0 );
- /* Transient congestion: */
- case ENOMEM: /* out of socket buffers */
- case ENOBUFS:
- case EAGAIN:
- #if (EAGAIN != EWOULDBLOCK)
- case EWOULDBLOCK:
- #endif
- continue;
- }
- deadv[deadc++] = id->sinkv[i].rtp_fd;
- }
- vlc_mutex_unlock( &id->lock_sink );
- block_Release( out );
- for( unsigned i = 0; i < deadc; i++ )
- {
- msg_Dbg( id, "removing socket %d", deadv[i] );
- rtp_del_sink( id, deadv[i] );
- }
- /* Hopefully we won't overflow the SO_MAXCONN accept queue */
- while( id->listen_fd != NULL )
- {
- int fd = net_Accept( id, id->listen_fd, 0 );
- if( fd == -1 )
- break;
- msg_Dbg( id, "adding socket %d", fd );
- rtp_add_sink( id, fd, true );
- }
- vlc_restorecancel (canc);
- }
- return NULL;
- }
- int rtp_add_sink( sout_stream_id_t *id, int fd, bool rtcp_mux )
- {
- rtp_sink_t sink = { fd, NULL };
- sink.rtcp = OpenRTCP( VLC_OBJECT( id->p_stream ), fd, IPPROTO_UDP,
- rtcp_mux );
- if( sink.rtcp == NULL )
- msg_Err( id, "RTCP failed!" );
- vlc_mutex_lock( &id->lock_sink );
- INSERT_ELEM( id->sinkv, id->sinkc, id->sinkc, sink );
- vlc_mutex_unlock( &id->lock_sink );
- return VLC_SUCCESS;
- }
- void rtp_del_sink( sout_stream_id_t *id, int fd )
- {
- rtp_sink_t sink = { fd, NULL };
- /* NOTE: must be safe to use if fd is not included */
- vlc_mutex_lock( &id->lock_sink );
- for( int i = 0; i < id->sinkc; i++ )
- {
- if (id->sinkv[i].rtp_fd == fd)
- {
- sink = id->sinkv[i];
- REMOVE_ELEM( id->sinkv, id->sinkc, i );
- break;
- }
- }
- vlc_mutex_unlock( &id->lock_sink );
- CloseRTCP( sink.rtcp );
- net_Close( sink.rtp_fd );
- }
- uint16_t rtp_get_seq( const sout_stream_id_t *id )
- {
- /* This will return values for the next packet.
- * Accounting for caching would not be totally trivial. */
- return id->i_sequence;
- }
- uint32_t rtp_get_ts( const sout_stream_id_t *id )
- {
- /* ... and this will return the value for the last packet.
- * Lame, but close enough. */
- return id->i_timestamp;
- }
- /* FIXME: this is pretty bad - if we remove and then insert an ES
- * the number will get unsynched from inside RTSP */
- unsigned rtp_get_num( const sout_stream_id_t *id )
- {
- sout_stream_sys_t *p_sys = id->p_stream->p_sys;
- int i;
- vlc_mutex_lock( &p_sys->lock_es );
- for( i = 0; i < p_sys->i_es; i++ )
- {
- if( id == p_sys->es[i] )
- break;
- }
- vlc_mutex_unlock( &p_sys->lock_es );
- return i;
- }
- void rtp_packetize_common( sout_stream_id_t *id, block_t *out,
- int b_marker, int64_t i_pts )
- {
- uint32_t i_timestamp = i_pts * (int64_t)id->i_clock_rate / INT64_C(1000000);
- out->p_buffer[0] = 0x80;
- out->p_buffer[1] = (b_marker?0x80:0x00)|id->i_payload_type;
- out->p_buffer[2] = ( id->i_sequence >> 8)&0xff;
- out->p_buffer[3] = ( id->i_sequence )&0xff;
- out->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
- out->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
- out->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
- out->p_buffer[7] = ( i_timestamp )&0xff;
- memcpy( out->p_buffer + 8, id->ssrc, 4 );
- out->i_buffer = 12;
- id->i_timestamp = i_timestamp;
- id->i_sequence++;
- }
- void rtp_packetize_send( sout_stream_id_t *id, block_t *out )
- {
- block_FifoPut( id->p_fifo, out );
- }
- /**
- * @return configured max RTP payload size (including payload type-specific
- * headers, excluding RTP and transport headers)
- */
- size_t rtp_mtu (const sout_stream_id_t *id)
- {
- return id->i_mtu - 12;
- }
- /*****************************************************************************
- * Non-RTP mux
- *****************************************************************************/
- /** Add an ES to a non-RTP muxed stream */
- static sout_stream_id_t *MuxAdd( sout_stream_t *p_stream, es_format_t *p_fmt )
- {
- sout_input_t *p_input;
- sout_mux_t *p_mux = p_stream->p_sys->p_mux;
- assert( p_mux != NULL );
- p_input = sout_MuxAddStream( p_mux, p_fmt );
- if( p_input == NULL )
- {
- msg_Err( p_stream, "cannot add this stream to the muxer" );
- return NULL;
- }
- return (sout_stream_id_t *)p_input;
- }
- static int MuxSend( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *p_buffer )
- {
- sout_mux_t *p_mux = p_stream->p_sys->p_mux;
- assert( p_mux != NULL );
- sout_MuxSendBuffer( p_mux, (sout_input_t *)id, p_buffer );
- return VLC_SUCCESS;
- }
- /** Remove an ES from a non-RTP muxed stream */
- static int MuxDel( sout_stream_t *p_stream, sout_stream_id_t *id )
- {
- sout_mux_t *p_mux = p_stream->p_sys->p_mux;
- assert( p_mux != NULL );
- sout_MuxDeleteStream( p_mux, (sout_input_t *)id );
- return VLC_SUCCESS;
- }
- static ssize_t AccessOutGrabberWriteBuffer( sout_stream_t *p_stream,
- const block_t *p_buffer )
- {
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- sout_stream_id_t *id = p_sys->es[0];
- int64_t i_dts = p_buffer->i_dts;
- uint8_t *p_data = p_buffer->p_buffer;
- size_t i_data = p_buffer->i_buffer;
- size_t i_max = id->i_mtu - 12;
- size_t i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max;
- while( i_data > 0 )
- {
- size_t i_size;
- /* output complete packet */
- if( p_sys->packet &&
- p_sys->packet->i_buffer + i_data > i_max )
- {
- rtp_packetize_send( id, p_sys->packet );
- p_sys->packet = NULL;
- }
- if( p_sys->packet == NULL )
- {
- /* allocate a new packet */
- p_sys->packet = block_New( p_stream, id->i_mtu );
- rtp_packetize_common( id, p_sys->packet, 1, i_dts );
- p_sys->packet->i_dts = i_dts;
- p_sys->packet->i_length = p_buffer->i_length / i_packet;
- i_dts += p_sys->packet->i_length;
- }
- i_size = __MIN( i_data,
- (unsigned)(id->i_mtu - p_sys->packet->i_buffer) );
- memcpy( &p_sys->packet->p_buffer[p_sys->packet->i_buffer],
- p_data, i_size );
- p_sys->packet->i_buffer += i_size;
- p_data += i_size;
- i_data -= i_size;
- }
- return VLC_SUCCESS;
- }
- static ssize_t AccessOutGrabberWrite( sout_access_out_t *p_access,
- block_t *p_buffer )
- {
- sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys;
- while( p_buffer )
- {
- block_t *p_next;
- AccessOutGrabberWriteBuffer( p_stream, p_buffer );
- p_next = p_buffer->p_next;
- block_Release( p_buffer );
- p_buffer = p_next;
- }
- return VLC_SUCCESS;
- }
- static sout_access_out_t *GrabberCreate( sout_stream_t *p_stream )
- {
- sout_access_out_t *p_grab;
- p_grab = vlc_object_create( p_stream->p_sout, sizeof( *p_grab ) );
- if( p_grab == NULL )
- return NULL;
- p_grab->p_module = NULL;
- p_grab->psz_access = strdup( "grab" );
- p_grab->p_cfg = NULL;
- p_grab->psz_path = strdup( "" );
- p_grab->p_sys = (sout_access_out_sys_t *)p_stream;
- p_grab->pf_seek = NULL;
- p_grab->pf_write = AccessOutGrabberWrite;
- vlc_object_attach( p_grab, p_stream );
- return p_grab;
- }