/***************************************************************************** * rtp.c: rtp stream output module ***************************************************************************** * Copyright (C) 2003-2004 the VideoLAN team * $Id$ * * 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 *****************************************************************************/ #include <stdlib.h> #include <errno.h> #include <vlc/vlc.h> #include <vlc/input.h> #include <vlc/sout.h> #include "vlc_httpd.h" #include "vlc_url.h" #include "network.h" #include "charset.h" /***************************************************************************** * Module descriptor *****************************************************************************/ #define MTU_REDUCE 50 #define DST_TEXT N_("Destination") #define DST_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 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 broader description of 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 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_("Time-To-Live (TTL)") #define TTL_LONGTEXT N_( \ "This allows you to specify the Time-To-Live for the output stream." ) #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-" vlc_module_begin(); set_shortname( _("RTP")); set_description( _("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, DST_TEXT, DST_LONGTEXT, VLC_TRUE ); add_string( SOUT_CFG_PREFIX "sdp", "", NULL, SDP_TEXT, SDP_LONGTEXT, VLC_TRUE ); add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT, MUX_LONGTEXT, VLC_TRUE ); add_string( SOUT_CFG_PREFIX "name", "NONE", NULL, NAME_TEXT, NAME_LONGTEXT, VLC_TRUE ); add_string( SOUT_CFG_PREFIX "description", "", NULL, DESC_TEXT, DESC_LONGTEXT, VLC_TRUE ); add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT, URL_LONGTEXT, VLC_TRUE ); add_string( SOUT_CFG_PREFIX "email", "", NULL, EMAIL_TEXT, EMAIL_LONGTEXT, VLC_TRUE ); add_integer( SOUT_CFG_PREFIX "port", 1234, NULL, PORT_TEXT, PORT_LONGTEXT, VLC_TRUE ); add_integer( SOUT_CFG_PREFIX "port-audio", 1230, NULL, PORT_AUDIO_TEXT, PORT_AUDIO_LONGTEXT, VLC_TRUE ); add_integer( SOUT_CFG_PREFIX "port-video", 1232, NULL, PORT_VIDEO_TEXT, PORT_VIDEO_LONGTEXT, VLC_TRUE ); add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT, TTL_LONGTEXT, VLC_TRUE ); add_bool( SOUT_CFG_PREFIX "mp4a-latm", 0, NULL, RFC3016_TEXT, RFC3016_LONGTEXT, VLC_FALSE ); set_callbacks( Open, Close ); vlc_module_end(); /***************************************************************************** * Exported prototypes *****************************************************************************/ static const char *ppsz_sout_options[] = { "dst", "name", "port", "port-audio", "port-video", "*sdp", "ttl", "mux", "description", "url","email", "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* ); /* For unicast/interleaved streaming */ typedef struct { char *psz_session; int64_t i_last; /* for timeout */ /* is it in "play" state */ vlc_bool_t b_playing; /* output (id-access) */ int i_id; sout_stream_id_t **id; int i_access; sout_access_out_t **access; } rtsp_client_t; struct sout_stream_sys_t { /* sdp */ int64_t i_sdp_id; int i_sdp_version; char *psz_sdp; vlc_mutex_t lock_sdp; char *psz_session_name; char *psz_session_description; char *psz_session_url; char *psz_session_email; /* */ vlc_bool_t b_export_sdp_file; char *psz_sdp_file; /* sap */ vlc_bool_t b_export_sap; session_descriptor_t *p_session; httpd_host_t *p_httpd_host; httpd_file_t *p_httpd_file; httpd_host_t *p_rtsp_host; httpd_url_t *p_rtsp_url; char *psz_rtsp_control; char *psz_rtsp_path; /* */ char *psz_destination; int i_port; int i_port_audio; int i_port_video; int i_ttl; vlc_bool_t b_latm; /* when need to use a private one or when using muxer */ int i_payload_type; /* in case we do TS/PS over rtp */ sout_mux_t *p_mux; sout_access_out_t *p_access; int i_mtu; sout_access_out_t *p_grab; uint16_t i_sequence; uint32_t i_timestamp_start; uint8_t ssrc[4]; block_t *packet; /* */ vlc_mutex_t lock_es; int i_es; sout_stream_id_t **es; /* */ int i_rtsp; rtsp_client_t **rtsp; }; typedef int (*pf_rtp_packetizer_t)( sout_stream_t *, sout_stream_id_t *, block_t * ); struct sout_stream_id_t { sout_stream_t *p_stream; /* rtp field */ uint8_t i_payload_type; uint16_t i_sequence; uint32_t i_timestamp_start; uint8_t ssrc[4]; /* for sdp */ int i_clock_rate; char *psz_rtpmap; char *psz_fmtp; char *psz_destination; int i_port; int i_cat; /* Packetizer specific fields */ pf_rtp_packetizer_t pf_packetize; int i_mtu; /* for sending the packets */ sout_access_out_t *p_access; vlc_mutex_t lock_rtsp; int i_rtsp_access; sout_access_out_t **rtsp_access; /* */ sout_input_t *p_input; /* RTSP url control */ httpd_url_t *p_rtsp_url; }; static int AccessOutGrabberWrite( sout_access_out_t *, block_t * ); static void SDPHandleUrl( sout_stream_t *, 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, vlc_url_t * ); static int RtspSetup( sout_stream_t *p_stream, vlc_url_t * ); static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *, httpd_message_t *, httpd_message_t * ); static int RtspCallbackId( httpd_callback_sys_t *, httpd_client_t *, httpd_message_t *, httpd_message_t * ); static rtsp_client_t *RtspClientNew( sout_stream_t *, char *psz_session ); static rtsp_client_t *RtspClientGet( sout_stream_t *, char *psz_session ); static void RtspClientDel( sout_stream_t *, rtsp_client_t * ); /***************************************************************************** * 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; sout_cfg_t *p_cfg = NULL; vlc_value_t val; vlc_bool_t b_rtsp = VLC_FALSE; sout_CfgParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options, p_stream->p_cfg ); p_sys = malloc( sizeof( sout_stream_sys_t ) ); p_sys->psz_destination = var_GetString( p_stream, SOUT_CFG_PREFIX "dst" ); if( *p_sys->psz_destination == '\0' ) { free( p_sys->psz_destination ); p_sys->psz_destination = NULL; } p_sys->psz_session_name = var_GetString( p_stream, SOUT_CFG_PREFIX "name" ); p_sys->psz_session_description = var_GetString( p_stream, SOUT_CFG_PREFIX "description" ); p_sys->psz_session_url = var_GetString( p_stream, SOUT_CFG_PREFIX "url" ); p_sys->psz_session_email = var_GetString( p_stream, SOUT_CFG_PREFIX "email" ); 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->psz_sdp_file = NULL; if( p_sys->i_port_audio == p_sys->i_port_video ) { msg_Err( p_stream, "audio and video port cannot be the same" ); p_sys->i_port_audio = 0; p_sys->i_port_video = 0; } if( !p_sys->psz_session_name ) { if( p_sys->psz_destination ) p_sys->psz_session_name = strdup( p_sys->psz_destination ); else p_sys->psz_session_name = strdup( "NONE" ); } 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 && !strncasecmp( p_cfg->psz_value, "rtsp", 4 ) ) { b_rtsp = VLC_TRUE; break; } } } if( !b_rtsp ) { vlc_value_t val2; var_Get( p_stream, SOUT_CFG_PREFIX "sdp", &val2 ); if( !strncasecmp( val2.psz_string, "rtsp", 4 ) ) b_rtsp = VLC_TRUE; free( val2.psz_string ); } if( !p_sys->psz_destination || *p_sys->psz_destination == '\0' ) { if( !b_rtsp ) { msg_Err( p_stream, "missing destination and not in rtsp mode" ); free( p_sys ); return VLC_EGENERIC; } p_sys->psz_destination = NULL; } else if( p_sys->i_port <= 0 ) { msg_Err( p_stream, "invalid port" ); free( p_sys ); return VLC_EGENERIC; } var_Get( p_stream, SOUT_CFG_PREFIX "ttl", &val ); if( val.i_int == 0 ) { /* 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. */ val.i_int = config_GetInt( p_stream, "ttl" ); } if( val.i_int > 255 ) val.i_int = 255; /* must not exceed 999 once formatted */ if( val.i_int < 0 ) { msg_Err( p_stream, "illegal TTL %d", val.i_int ); free( p_sys ); return VLC_EGENERIC; } p_sys->i_ttl = val.i_int; var_Get( p_stream, SOUT_CFG_PREFIX "mp4a-latm", &val ); p_sys->b_latm = val.b_bool; p_sys->i_payload_type = 96; p_sys->i_es = 0; p_sys->es = NULL; p_sys->i_rtsp = 0; p_sys->rtsp = NULL; p_sys->psz_sdp = NULL; p_sys->i_sdp_id = mdate(); p_sys->i_sdp_version = 1; p_sys->psz_sdp = NULL; p_sys->b_export_sap = VLC_FALSE; p_sys->b_export_sdp_file = VLC_FALSE; p_sys->p_session = NULL; p_sys->p_httpd_host = NULL; p_sys->p_httpd_file = NULL; p_sys->p_rtsp_host = NULL; p_sys->p_rtsp_url = NULL; p_sys->psz_rtsp_control = NULL; p_sys->psz_rtsp_path = NULL; vlc_mutex_init( p_stream, &p_sys->lock_sdp ); vlc_mutex_init( p_stream, &p_sys->lock_es ); p_stream->pf_add = Add; p_stream->pf_del = Del; p_stream->pf_send = Send; p_stream->p_sys = p_sys; var_Get( p_stream, SOUT_CFG_PREFIX "mux", &val ); if( *val.psz_string ) { sout_access_out_t *p_grab; char *psz_rtpmap, url[NI_MAXHOST + 8], access[17], psz_ttl[5], ipv; if( b_rtsp ) { msg_Err( p_stream, "muxing is not supported in RTSP mode" ); free( p_sys ); return VLC_EGENERIC; } else if( !p_sys->psz_destination || *p_sys->psz_destination == '\0' ) { msg_Err( p_stream, "rtp needs a destination when muxing" ); free( p_sys ); return VLC_EGENERIC; } /* Check muxer type */ if( !strncasecmp( val.psz_string, "ps", 2 ) || !strncasecmp( val.psz_string, "mpeg1", 5 ) ) { psz_rtpmap = "MP2P/90000"; } else if( !strncasecmp( val.psz_string, "ts", 2 ) ) { psz_rtpmap = "MP2T/90000"; p_sys->i_payload_type = 33; } else { msg_Err( p_stream, "unsupported muxer type with rtp (only ts/ps)" ); free( p_sys ); return VLC_EGENERIC; } /* create the access out */ if( p_sys->i_ttl > 0 ) { sprintf( access, "udp{raw,ttl=%d}", p_sys->i_ttl ); } else { sprintf( access, "udp{raw}" ); } /* IPv6 needs brackets if not already present */ snprintf( url, sizeof( url ), ( ( p_sys->psz_destination[0] != '[' ) && ( strchr( p_sys->psz_destination, ':' ) != NULL ) ) ? "[%s]:%d" : "%s:%d", p_sys->psz_destination, p_sys->i_port ); url[sizeof( url ) - 1] = '\0'; /* FIXME: we should check that url is a numerical address, otherwise * the SDP will be quite broken (regardless of the IP protocol version) * Also it might be IPv6 with no ':' if it is a DNS name. */ ipv = ( strchr( p_sys->psz_destination, ':' ) != NULL ) ? '6' : '4'; if( !( p_sys->p_access = sout_AccessOutNew( p_sout, access, url ) ) ) { msg_Err( p_stream, "cannot create the access out for %s://%s", access, url ); free( p_sys ); return VLC_EGENERIC; } p_sys->i_mtu = config_GetInt( p_stream, "mtu" ); /* XXX beurk */ if( p_sys->i_mtu <= 16 + MTU_REDUCE ) { /* better than nothing */ p_sys->i_mtu = 1500; } p_sys->i_mtu -= MTU_REDUCE; /* the access out grabber TODO export it as sout_AccessOutGrabberNew */ p_grab = p_sys->p_grab = vlc_object_create( p_sout, sizeof( sout_access_out_t ) ); p_grab->p_module = NULL; p_grab->p_sout = p_sout; p_grab->psz_access = strdup( "grab" ); p_grab->p_cfg = NULL; p_grab->psz_name = strdup( "" ); p_grab->p_sys = (sout_access_out_sys_t*)p_stream; p_grab->pf_seek = NULL; p_grab->pf_write = AccessOutGrabberWrite; /* the muxer */ if( !( p_sys->p_mux = sout_MuxNew( p_sout, val.psz_string, p_sys->p_grab ) ) ) { msg_Err( p_stream, "cannot create the muxer (%s)", val.psz_string ); sout_AccessOutDelete( p_sys->p_grab ); sout_AccessOutDelete( p_sys->p_access ); free( p_sys ); return VLC_EGENERIC; } /* create the SDP for a muxed stream (only once) */ /* FIXME http://www.faqs.org/rfcs/rfc2327.html All text fields should be UTF-8 encoded. Use global a:charset to announce this. o= - should be local username (no spaces allowed) o= time should be hashed with some other value to garantue uniqueness o= we need IP6 support? o= don't use the localhost address. use fully qualified domain name or IP4 address p= international phone number (pass via vars?) c= IP6 support a= recvonly (missing) a= type:broadcast (missing) a= charset: (normally charset should be UTF-8, this can be used to override s= and i=) a= x-plgroup: (missing) RTP packets need to get the correct src IP address */ if( net_AddressIsMulticast( (vlc_object_t *)p_stream, p_sys->psz_destination ) ) { snprintf( psz_ttl, sizeof( psz_ttl ), "/%d", p_sys->i_ttl ); psz_ttl[sizeof( psz_ttl ) - 1] = '\0'; } else { psz_ttl[0] = '\0'; } asprintf( &p_sys->psz_sdp, "v=0\r\n" /* FIXME: source address not known :( */ "o=- "I64Fd" %d IN IP%c %s\r\n" "s=%s\r\n" "i=%s\r\n" "u=%s\r\n" "e=%s\r\n" "t=0 0\r\n" /* permanent stream */ /* when scheduled from vlm, we should set this info correctly */ "a=tool:"PACKAGE_STRING"\r\n" "c=IN IP%c %s%s\r\n" "m=video %d RTP/AVP %d\r\n" "a=rtpmap:%d %s\r\n", p_sys->i_sdp_id, p_sys->i_sdp_version, ipv, ipv == '6' ? "::1" : "127.0.0.1" /* FIXME */, p_sys->psz_session_name, p_sys->psz_session_description, p_sys->psz_session_url, p_sys->psz_session_email, ipv, p_sys->psz_destination, psz_ttl, p_sys->i_port, p_sys->i_payload_type, p_sys->i_payload_type, psz_rtpmap ); msg_Dbg( p_stream, "sdp=%s", p_sys->psz_sdp ); /* create the rtp context */ p_sys->ssrc[0] = rand()&0xff; p_sys->ssrc[1] = rand()&0xff; p_sys->ssrc[2] = rand()&0xff; p_sys->ssrc[3] = rand()&0xff; p_sys->i_sequence = rand()&0xffff; p_sys->i_timestamp_start = rand()&0xffffffff; p_sys->packet = NULL; } else { p_sys->p_mux = NULL; p_sys->p_access = NULL; p_sys->p_grab = NULL; } free( val.psz_string ); var_Get( p_stream, SOUT_CFG_PREFIX "sdp", &val ); if( *val.psz_string ) { sout_cfg_t *p_cfg; SDPHandleUrl( p_stream, val.psz_string ); 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 == '\0' ) continue; if( !strcmp( p_cfg->psz_value, val.psz_string ) ) /* needed both :sout-rtp-sdp= and rtp{sdp=} can be used */ continue; SDPHandleUrl( p_stream, p_cfg->psz_value ); } } } free( val.psz_string ); /* 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 ) { sout_MuxDelete( p_sys->p_mux ); sout_AccessOutDelete( p_sys->p_access ); 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 ); } } while( p_sys->i_rtsp > 0 ) { RtspClientDel( p_stream, p_sys->rtsp[0] ); } vlc_mutex_destroy( &p_sys->lock_sdp ); 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 ); } if( p_sys->p_rtsp_url ) { httpd_UrlDelete( p_sys->p_rtsp_url ); } if( p_sys->p_rtsp_host ) { httpd_HostDelete( p_sys->p_rtsp_host ); } if( p_sys->psz_session_name ) { free( p_sys->psz_session_name ); p_sys->psz_session_name = NULL; } if( p_sys->psz_session_description ) { free( p_sys->psz_session_description ); p_sys->psz_session_description = NULL; } if( p_sys->psz_session_url ) { free( p_sys->psz_session_url ); p_sys->psz_session_url = NULL; } if( p_sys->psz_session_email ) { free( p_sys->psz_session_email ); p_sys->psz_session_email = NULL; } if( p_sys->psz_sdp ) { free( p_sys->psz_sdp ); p_sys->psz_sdp = NULL; } free( p_sys ); } /***************************************************************************** * SDPHandleUrl: *****************************************************************************/ static void SDPHandleUrl( sout_stream_t *p_stream, 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" ); return; } 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->p_rtsp_url ) { msg_Err( p_stream, "you can use sdp=rtsp:// only once" ); return; } /* FIXME test if destination is multicast or no destination at all FIXME */ if( RtspSetup( p_stream, &url ) ) { msg_Err( p_stream, "cannot export sdp as rtsp" ); } } else if( ( url.psz_protocol && !strcasecmp( url.psz_protocol, "sap" ) ) || ( url.psz_host && !strcasecmp( url.psz_host, "sap" ) ) ) { p_sys->b_export_sap = VLC_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" ); return; } p_sys->b_export_sdp_file = VLC_TRUE; psz_url = &psz_url[5]; if( psz_url[0] == '/' && psz_url[1] == '/' ) psz_url += 2; p_sys->psz_sdp_file = strdup( psz_url ); } else { msg_Warn( p_stream, "unknown protocol for SDP (%s)", url.psz_protocol ); } vlc_UrlClean( &url ); } /***************************************************************************** * SDPGenerate *****************************************************************************/ /* FIXME http://www.faqs.org/rfcs/rfc2327.html All text fields should be UTF-8 encoded. Use global a:charset to announce this. o= - should be local username (no spaces allowed) o= time should be hashed with some other value to garantue uniqueness o= we need IP6 support? o= don't use the localhost address. use fully qualified domain name or IP4 address p= international phone number (pass via vars?) c= IP6 support a= recvonly (missing) a= type:broadcast (missing) a= charset: (normally charset should be UTF-8, this can be used to override s= and i=) a= x-plgroup: (missing) RTP packets need to get the correct src IP address */ static char *SDPGenerate( const sout_stream_t *p_stream, const char *psz_destination, vlc_bool_t b_rtsp ) { sout_stream_sys_t *p_sys = p_stream->p_sys; int i_size; char *psz_sdp, *p, ipv; int i; /* FIXME: breaks IP version check on unknown destination */ if( psz_destination == NULL ) psz_destination = "0.0.0.0"; i_size = sizeof( "v=0\r\n" ) + sizeof( "o=- * * IN IP4 127.0.0.1\r\n" ) + 10 + 10 + sizeof( "s=*\r\n" ) + strlen( p_sys->psz_session_name ) + sizeof( "i=*\r\n" ) + strlen( p_sys->psz_session_description ) + sizeof( "u=*\r\n" ) + strlen( p_sys->psz_session_url ) + sizeof( "e=*\r\n" ) + strlen( p_sys->psz_session_email ) + sizeof( "t=0 0\r\n" ) + /* permanent stream */ /* when scheduled from vlm, we should set this info correctly */ sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) + sizeof( "c=IN IP4 */*\r\n" ) + 20 + 10 + strlen( psz_destination ) ; for( i = 0; i < p_sys->i_es; i++ ) { sout_stream_id_t *id = p_sys->es[i]; i_size += strlen( "m=**d*o * RTP/AVP *\r\n" ) + 10 + 10; if( id->psz_rtpmap ) { i_size += strlen( "a=rtpmap:* *\r\n" ) + strlen( id->psz_rtpmap )+10; } if( id->psz_fmtp ) { i_size += strlen( "a=fmtp:* *\r\n" ) + strlen( id->psz_fmtp ) + 10; } if( b_rtsp ) { i_size += strlen( "a=control:*/trackID=*\r\n" ) + strlen( p_sys->psz_rtsp_control ) + 10; } } if( p_sys->p_mux ) { i_size += strlen( "m=video %d RTP/AVP %d\r\n" ) +10 +10; } ipv = ( strchr( psz_destination, ':' ) != NULL ) ? '6' : '4'; p = psz_sdp = malloc( i_size ); p += sprintf( p, "v=0\r\n" ); p += sprintf( p, "o=- "I64Fd" %d IN IP%c %s\r\n", p_sys->i_sdp_id, p_sys->i_sdp_version, ipv, ipv == '6' ? "::" : "127.0.0.1" ); if( *p_sys->psz_session_name ) p += sprintf( p, "s=%s\r\n", p_sys->psz_session_name ); if( *p_sys->psz_session_description ) p += sprintf( p, "i=%s\r\n", p_sys->psz_session_description ); if( *p_sys->psz_session_url ) p += sprintf( p, "u=%s\r\n", p_sys->psz_session_url ); if( *p_sys->psz_session_email ) p += sprintf( p, "e=%s\r\n", p_sys->psz_session_email ); p += sprintf( p, "t=0 0\r\n" ); /* permanent stream */ /* when scheduled from vlm, we should set this info correctly */ p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" ); p += sprintf( p, "c=IN IP%c %s", ipv, psz_destination ); if( net_AddressIsMulticast( (vlc_object_t *)p_stream, psz_destination ) ) { /* Add the ttl if it is a multicast address */ /* FIXME: 1 is not a correct default value in the case of IPv6 */ p += sprintf( p, "/%d\r\n", p_sys->i_ttl ?: 1 ); } else { p += sprintf( p, "\r\n" ); } for( i = 0; i < p_sys->i_es; i++ ) { sout_stream_id_t *id = p_sys->es[i]; if( id->i_cat == AUDIO_ES ) { p += sprintf( p, "m=audio %d RTP/AVP %d\r\n", id->i_port, id->i_payload_type ); } else if( id->i_cat == VIDEO_ES ) { p += sprintf( p, "m=video %d RTP/AVP %d\r\n", id->i_port, id->i_payload_type ); } else { continue; } if( id->psz_rtpmap ) { p += sprintf( p, "a=rtpmap:%d %s\r\n", id->i_payload_type, id->psz_rtpmap ); } if( id->psz_fmtp ) { p += sprintf( p, "a=fmtp:%d %s\r\n", id->i_payload_type, id->psz_fmtp ); } if( b_rtsp ) { p += sprintf( p, "a=control:trackID=%d\r\n", i ); } } if( p_sys->p_mux ) { p += sprintf( p, "m=video %d RTP/AVP %d\r\n", p_sys->i_port, p_sys->i_payload_type ); } return psz_sdp; } /***************************************************************************** * *****************************************************************************/ static int rtp_packetize_l16 ( sout_stream_t *, sout_stream_id_t *, block_t * ); static int rtp_packetize_l8 ( sout_stream_t *, sout_stream_id_t *, block_t * ); static int rtp_packetize_mpa ( sout_stream_t *, sout_stream_id_t *, block_t * ); static int rtp_packetize_mpv ( sout_stream_t *, sout_stream_id_t *, block_t * ); static int rtp_packetize_ac3 ( sout_stream_t *, sout_stream_id_t *, block_t * ); static int rtp_packetize_split( sout_stream_t *, sout_stream_id_t *, block_t * ); static int rtp_packetize_mp4a ( sout_stream_t *, sout_stream_id_t *, block_t * ); static int rtp_packetize_mp4a_latm ( sout_stream_t *, sout_stream_id_t *, block_t * ); static int rtp_packetize_h263 ( sout_stream_t *, sout_stream_id_t *, block_t * ); static int rtp_packetize_amr ( sout_stream_t *, sout_stream_id_t *, block_t * ); 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] = '\0'; } static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt ) { sout_instance_t *p_sout = p_stream->p_sout; sout_stream_sys_t *p_sys = p_stream->p_sys; sout_stream_id_t *id; sout_access_out_t *p_access = NULL; int i_port; char *psz_sdp; if( p_sys->p_mux != NULL ) { sout_input_t *p_input = NULL; if( ( p_input = sout_MuxAddStream( p_sys->p_mux, p_fmt ) ) == NULL ) { msg_Err( p_stream, "cannot add this stream to the muxer" ); return NULL; } id = malloc( sizeof( sout_stream_id_t ) ); memset( id, 0, sizeof( sout_stream_id_t ) ); id->p_access = NULL; id->p_input = p_input; id->pf_packetize= NULL; id->p_rtsp_url = NULL; id->i_port = 0; return id; } /* Choose the port */ i_port = 0; if( p_fmt->i_cat == AUDIO_ES && p_sys->i_port_audio > 0 ) { i_port = p_sys->i_port_audio; p_sys->i_port_audio = 0; } else if( p_fmt->i_cat == VIDEO_ES && p_sys->i_port_video > 0 ) { i_port = p_sys->i_port_video; p_sys->i_port_video = 0; } while( i_port == 0 ) { if( p_sys->i_port != p_sys->i_port_audio && p_sys->i_port != p_sys->i_port_video ) { i_port = p_sys->i_port; p_sys->i_port += 2; break; } p_sys->i_port += 2; } if( p_sys->psz_destination ) { char access[17]; char url[NI_MAXHOST + 8]; /* first try to create the access out */ if( p_sys->i_ttl ) { snprintf( access, sizeof( access ), "udp{raw,ttl=%d}", p_sys->i_ttl ); access[sizeof( access ) - 1] = '\0'; } else strcpy( access, "udp{raw}" ); snprintf( url, sizeof( url ), (( p_sys->psz_destination[0] != '[' ) && strchr( p_sys->psz_destination, ':' )) ? "[%s]:%d" : "%s:%d", p_sys->psz_destination, i_port ); url[sizeof( url ) - 1] = '\0'; if( ( p_access = sout_AccessOutNew( p_sout, access, url ) ) == NULL ) { msg_Err( p_stream, "cannot create the access out for %s://%s", access, url ); return NULL; } msg_Dbg( p_stream, "access out %s:%s", access, url ); } /* not create the rtp specific stuff */ id = malloc( sizeof( sout_stream_id_t ) ); memset( id, 0, sizeof( sout_stream_id_t ) ); id->p_stream = p_stream; id->p_access = p_access; id->p_input = NULL; id->psz_rtpmap = NULL; id->psz_fmtp = NULL; id->psz_destination = p_sys->psz_destination ? strdup( p_sys->psz_destination ) : NULL; id->i_port = i_port; id->p_rtsp_url = NULL; vlc_mutex_init( p_stream, &id->lock_rtsp ); id->i_rtsp_access = 0; id->rtsp_access = NULL; switch( p_fmt->i_codec ) { 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; } else { id->i_payload_type = p_sys->i_payload_type++; } id->psz_rtpmap = malloc( strlen( "L16/*/*" ) + 20+1 ); sprintf( id->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate, p_fmt->audio.i_channels ); id->i_clock_rate = p_fmt->audio.i_rate; id->pf_packetize = rtp_packetize_l16; break; case VLC_FOURCC( 'u', '8', ' ', ' ' ): id->i_payload_type = p_sys->i_payload_type++; id->psz_rtpmap = malloc( strlen( "L8/*/*" ) + 20+1 ); sprintf( id->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate, p_fmt->audio.i_channels ); id->i_clock_rate = p_fmt->audio.i_rate; id->pf_packetize = rtp_packetize_l8; break; case VLC_FOURCC( 'm', 'p', 'g', 'a' ): id->i_payload_type = 14; id->i_clock_rate = 90000; id->psz_rtpmap = strdup( "MPA/90000" ); id->pf_packetize = rtp_packetize_mpa; break; case VLC_FOURCC( 'm', 'p', 'g', 'v' ): id->i_payload_type = 32; id->i_clock_rate = 90000; id->psz_rtpmap = strdup( "MPV/90000" ); id->pf_packetize = rtp_packetize_mpv; break; case VLC_FOURCC( 'a', '5', '2', ' ' ): id->i_payload_type = p_sys->i_payload_type++; id->i_clock_rate = 90000; id->psz_rtpmap = strdup( "ac3/90000" ); id->pf_packetize = rtp_packetize_ac3; break; case VLC_FOURCC( 'H', '2', '6', '3' ): id->i_payload_type = p_sys->i_payload_type++; id->i_clock_rate = 90000; id->psz_rtpmap = strdup( "H263-1998/90000" ); id->pf_packetize = rtp_packetize_h263; break; case VLC_FOURCC( 'm', 'p', '4', 'v' ): { char hexa[2*p_fmt->i_extra +1]; id->i_payload_type = p_sys->i_payload_type++; id->i_clock_rate = 90000; id->psz_rtpmap = strdup( "MP4V-ES/90000" ); id->pf_packetize = rtp_packetize_split; if( p_fmt->i_extra > 0 ) { id->psz_fmtp = malloc( 100 + 2 * p_fmt->i_extra ); sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra ); sprintf( id->psz_fmtp, "profile-level-id=3; config=%s;", hexa ); } break; } case VLC_FOURCC( 'm', 'p', '4', 'a' ): { id->i_payload_type = p_sys->i_payload_type++; id->i_clock_rate = p_fmt->audio.i_rate; if(!p_sys->b_latm) { char hexa[2*p_fmt->i_extra +1]; id->psz_rtpmap = malloc( strlen( "mpeg4-generic/" ) + 12 ); sprintf( id->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate ); id->pf_packetize = rtp_packetize_mp4a; id->psz_fmtp = malloc( 200 + 2 * p_fmt->i_extra ); sprintf_hexa( hexa, p_fmt->p_extra, p_fmt->i_extra ); sprintf( id->psz_fmtp, "streamtype=5; profile-level-id=15; mode=AAC-hbr; " "config=%s; SizeLength=13;IndexLength=3; " "IndexDeltaLength=3; Profile=1;", hexa ); } 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; asprintf( &id->psz_rtpmap, "MP4A-LATM/%d/%d", p_fmt->audio.i_rate, p_fmt->audio.i_channels ); id->pf_packetize = rtp_packetize_mp4a_latm; sprintf_hexa( hexa, config, 6 ); asprintf( &id->psz_fmtp, "profile-level-id=15; " "object=2; cpresent=0; config=%s", hexa ); } break; } case VLC_FOURCC( 's', 'a', 'm', 'r' ): id->i_payload_type = p_sys->i_payload_type++; id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ? "AMR/8000/2" : "AMR/8000" ); id->psz_fmtp = strdup( "octet-align=1" ); id->i_clock_rate = p_fmt->audio.i_rate; id->pf_packetize = rtp_packetize_amr; break; case VLC_FOURCC( 's', 'a', 'w', 'b' ): id->i_payload_type = p_sys->i_payload_type++; id->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ? "AMR-WB/16000/2" : "AMR-WB/16000" ); id->psz_fmtp = strdup( "octet-align=1" ); id->i_clock_rate = p_fmt->audio.i_rate; id->pf_packetize = rtp_packetize_amr; break; default: msg_Err( p_stream, "cannot add this stream (unsupported " "codec:%4.4s)", (char*)&p_fmt->i_codec ); if( p_access ) { sout_AccessOutDelete( p_access ); } free( id ); return NULL; } id->i_cat = p_fmt->i_cat; id->ssrc[0] = rand()&0xff; id->ssrc[1] = rand()&0xff; id->ssrc[2] = rand()&0xff; id->ssrc[3] = rand()&0xff; id->i_sequence = rand()&0xffff; id->i_timestamp_start = rand()&0xffffffff; id->i_mtu = config_GetInt( p_stream, "mtu" ); /* XXX beuk */ if( id->i_mtu <= 16 + MTU_REDUCE ) { /* better than nothing */ id->i_mtu = 1500; } id->i_mtu -= MTU_REDUCE; msg_Dbg( p_stream, "maximum RTP packet size: %d bytes", id->i_mtu ); if( p_sys->p_rtsp_url ) { char psz_urlc[strlen( p_sys->psz_rtsp_control ) + 1 + 10]; sprintf( psz_urlc, "%s/trackID=%d", p_sys->psz_rtsp_path, p_sys->i_es ); msg_Dbg( p_stream, "rtsp: adding %s\n", psz_urlc ); id->p_rtsp_url = httpd_UrlNewUnique( p_sys->p_rtsp_host, psz_urlc, NULL, NULL, NULL ); if( id->p_rtsp_url ) { httpd_UrlCatch( id->p_rtsp_url, HTTPD_MSG_SETUP, RtspCallbackId, (void*)id ); //httpd_UrlCatch( id->p_rtsp_url, HTTPD_MSG_PLAY, RtspCallback, (void*)p_stream ); //httpd_UrlCatch( id->p_rtsp_url, HTTPD_MSG_PAUSE, RtspCallback, (void*)p_stream ); } } /* 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, p_sys->psz_destination, VLC_FALSE ); 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 ); p_sys->i_sdp_version++; msg_Dbg( p_stream, "sdp=%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; } static int Del( sout_stream_t *p_stream, sout_stream_id_t *id ) { sout_stream_sys_t *p_sys = p_stream->p_sys; 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 port */ if( id->i_port > 0 ) { if( id->i_cat == AUDIO_ES && p_sys->i_port_audio == 0 ) p_sys->i_port_audio = id->i_port; else if( id->i_cat == VIDEO_ES && p_sys->i_port_video == 0 ) p_sys->i_port_video = id->i_port; } if( id->p_access ) { if( id->psz_rtpmap ) { free( id->psz_rtpmap ); } if( id->psz_fmtp ) { free( id->psz_fmtp ); } if( id->psz_destination ) free( id->psz_destination ); sout_AccessOutDelete( id->p_access ); } else if( id->p_input ) { sout_MuxDeleteStream( p_sys->p_mux, id->p_input ); } if( id->p_rtsp_url ) { httpd_UrlDelete( id->p_rtsp_url ); } vlc_mutex_destroy( &id->lock_rtsp ); if( id->rtsp_access ) free( id->rtsp_access ); /* 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 ); free( 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; if( p_stream->p_sys->p_mux ) { sout_MuxSendBuffer( p_stream->p_sys->p_mux, id->p_input, p_buffer ); } else { while( p_buffer ) { p_next = p_buffer->p_next; if( id->pf_packetize( p_stream, id, p_buffer ) ) { break; } block_Release( p_buffer ); p_buffer = p_next; } } return VLC_SUCCESS; } static int AccessOutGrabberWriteBuffer( sout_stream_t *p_stream, block_t *p_buffer ) { sout_stream_sys_t *p_sys = p_stream->p_sys; int64_t i_dts = p_buffer->i_dts; uint32_t i_timestamp = i_dts * 9 / 100; uint8_t *p_data = p_buffer->p_buffer; unsigned int i_data = p_buffer->i_buffer; unsigned int i_max = p_sys->i_mtu - 12; unsigned i_packet = ( p_buffer->i_buffer + i_max - 1 ) / i_max; while( i_data > 0 ) { unsigned int i_size; /* output complete packet */ if( p_sys->packet && p_sys->packet->i_buffer + i_data > i_max ) { sout_AccessOutWrite( p_sys->p_access, p_sys->packet ); p_sys->packet = NULL; } if( p_sys->packet == NULL ) { /* allocate a new packet */ p_sys->packet = block_New( p_stream, p_sys->i_mtu ); p_sys->packet->p_buffer[ 0] = 0x80; p_sys->packet->p_buffer[ 1] = 0x80|p_sys->i_payload_type; p_sys->packet->p_buffer[ 2] = ( p_sys->i_sequence >> 8)&0xff; p_sys->packet->p_buffer[ 3] = ( p_sys->i_sequence )&0xff; p_sys->packet->p_buffer[ 4] = ( i_timestamp >> 24 )&0xff; p_sys->packet->p_buffer[ 5] = ( i_timestamp >> 16 )&0xff; p_sys->packet->p_buffer[ 6] = ( i_timestamp >> 8 )&0xff; p_sys->packet->p_buffer[ 7] = ( i_timestamp )&0xff; p_sys->packet->p_buffer[ 8] = p_sys->ssrc[0]; p_sys->packet->p_buffer[ 9] = p_sys->ssrc[1]; p_sys->packet->p_buffer[10] = p_sys->ssrc[2]; p_sys->packet->p_buffer[11] = p_sys->ssrc[3]; p_sys->packet->i_buffer = 12; 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; p_sys->i_sequence++; } i_size = __MIN( i_data, (unsigned)(p_sys->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 int AccessOutGrabberWrite( sout_access_out_t *p_access, block_t *p_buffer ) { sout_stream_t *p_stream = (sout_stream_t*)p_access->p_sys; //fprintf( stderr, "received buffer size=%d\n", p_buffer->i_buffer ); // 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; } /**************************************************************************** * 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; announce_method_t *p_method = sout_AnnounceMethodCreate( METHOD_TYPE_SAP ); /* Remove the previous session */ if( p_sys->p_session != NULL) { sout_AnnounceUnRegister( p_sout, p_sys->p_session); sout_AnnounceSessionDestroy( 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 ) { p_sys->p_session = sout_AnnounceRegisterSDP( p_sout, p_sys->psz_sdp, p_sys->psz_destination, p_method ); } free( 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( ( f = utf8_fopen( p_sys->psz_sdp_file, "wt" ) ) == NULL ) { msg_Err( p_stream, "cannot open file '%s' (%s)", p_sys->psz_sdp_file, strerror(errno) ); return VLC_EGENERIC; } fprintf( f, "%s", p_sys->psz_sdp ); 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, 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 ) { 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; } /**************************************************************************** * RTSP: ****************************************************************************/ static rtsp_client_t *RtspClientNew( sout_stream_t *p_stream, char *psz_session ) { rtsp_client_t *rtsp = malloc( sizeof( rtsp_client_t )); rtsp->psz_session = psz_session; rtsp->i_last = 0; rtsp->b_playing = VLC_FALSE; rtsp->i_id = 0; rtsp->id = NULL; rtsp->i_access = 0; rtsp->access = NULL; TAB_APPEND( p_stream->p_sys->i_rtsp, p_stream->p_sys->rtsp, rtsp ); return rtsp; } static rtsp_client_t *RtspClientGet( sout_stream_t *p_stream, char *psz_session ) { int i; if( psz_session ) return NULL; for( i = 0; i < p_stream->p_sys->i_rtsp; i++ ) { if( !strcmp( p_stream->p_sys->rtsp[i]->psz_session, psz_session ) ) { return p_stream->p_sys->rtsp[i]; } } return NULL; } static void RtspClientDel( sout_stream_t *p_stream, rtsp_client_t *rtsp ) { int i; TAB_REMOVE( p_stream->p_sys->i_rtsp, p_stream->p_sys->rtsp, rtsp ); for( i = 0; i < rtsp->i_access; i++ ) { sout_AccessOutDelete( rtsp->access[i] ); } if( rtsp->id ) free( rtsp->id ); if( rtsp->access ) free( rtsp->access ); free( rtsp->psz_session ); free( rtsp ); } static int RtspSetup( sout_stream_t *p_stream, vlc_url_t *url ) { sout_stream_sys_t *p_sys = p_stream->p_sys; msg_Dbg( p_stream, "rtsp setup: %s : %d / %s\n", url->psz_host, url->i_port, url->psz_path ); p_sys->p_rtsp_host = httpd_HostNew( VLC_OBJECT(p_stream), url->psz_host, url->i_port > 0 ? url->i_port : 554 ); if( p_sys->p_rtsp_host == NULL ) { return VLC_EGENERIC; } p_sys->psz_rtsp_path = strdup( url->psz_path ? url->psz_path : "/" ); p_sys->psz_rtsp_control = malloc (strlen( url->psz_host ) + 20 + strlen( p_sys->psz_rtsp_path ) + 1 ); sprintf( p_sys->psz_rtsp_control, "rtsp://%s:%d%s", url->psz_host, url->i_port > 0 ? url->i_port : 554, p_sys->psz_rtsp_path ); p_sys->p_rtsp_url = httpd_UrlNewUnique( p_sys->p_rtsp_host, p_sys->psz_rtsp_path, NULL, NULL, NULL ); if( p_sys->p_rtsp_url == 0 ) { return VLC_EGENERIC; } httpd_UrlCatch( p_sys->p_rtsp_url, HTTPD_MSG_DESCRIBE, RtspCallback, (void*)p_stream ); httpd_UrlCatch( p_sys->p_rtsp_url, HTTPD_MSG_PLAY, RtspCallback, (void*)p_stream ); httpd_UrlCatch( p_sys->p_rtsp_url, HTTPD_MSG_PAUSE, RtspCallback, (void*)p_stream ); httpd_UrlCatch( p_sys->p_rtsp_url, HTTPD_MSG_TEARDOWN, RtspCallback, (void*)p_stream ); return VLC_SUCCESS; } static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl, httpd_message_t *answer, httpd_message_t *query ) { sout_stream_t *p_stream = (sout_stream_t*)p_args; sout_stream_sys_t *p_sys = p_stream->p_sys; char *psz_destination = p_sys->psz_destination; char *psz_session = NULL; char *psz_cseq = NULL; int i_cseq = 0; if( answer == NULL || query == NULL ) { return VLC_SUCCESS; } //fprintf( stderr, "RtspCallback query: type=%d\n", query->i_type ); answer->i_proto = HTTPD_PROTO_RTSP; answer->i_version= query->i_version; answer->i_type = HTTPD_MSG_ANSWER; switch( query->i_type ) { case HTTPD_MSG_DESCRIBE: { char *psz_sdp = SDPGenerate( p_stream, psz_destination ? psz_destination : "0.0.0.0", VLC_TRUE ); answer->i_status = 200; answer->psz_status = strdup( "OK" ); httpd_MsgAdd( answer, "Content-type", "%s", "application/sdp" ); answer->p_body = (uint8_t *)psz_sdp; answer->i_body = strlen( psz_sdp ); break; } case HTTPD_MSG_PLAY: { rtsp_client_t *rtsp; /* for now only multicast so easy */ answer->i_status = 200; answer->psz_status = strdup( "OK" ); answer->i_body = 0; answer->p_body = NULL; psz_session = httpd_MsgGet( query, "Session" ); rtsp = RtspClientGet( p_stream, psz_session ); if( rtsp && !rtsp->b_playing ) { int i_id; /* FIXME */ rtsp->b_playing = VLC_TRUE; vlc_mutex_lock( &p_sys->lock_es ); for( i_id = 0; i_id < rtsp->i_id; i_id++ ) { sout_stream_id_t *id = rtsp->id[i_id]; int i; for( i = 0; i < p_sys->i_es; i++ ) { if( id == p_sys->es[i] ) break; } if( i >= p_sys->i_es ) continue; vlc_mutex_lock( &id->lock_rtsp ); TAB_APPEND( id->i_rtsp_access, id->rtsp_access, rtsp->access[i_id] ); vlc_mutex_unlock( &id->lock_rtsp ); } vlc_mutex_unlock( &p_sys->lock_es ); } break; } case HTTPD_MSG_PAUSE: /* FIXME */ return VLC_EGENERIC; case HTTPD_MSG_TEARDOWN: { rtsp_client_t *rtsp; /* for now only multicast so easy again */ answer->i_status = 200; answer->psz_status = strdup( "OK" ); answer->i_body = 0; answer->p_body = NULL; psz_session = httpd_MsgGet( query, "Session" ); rtsp = RtspClientGet( p_stream, psz_session ); if( rtsp ) { int i_id; vlc_mutex_lock( &p_sys->lock_es ); for( i_id = 0; i_id < rtsp->i_id; i_id++ ) { sout_stream_id_t *id = rtsp->id[i_id]; int i; for( i = 0; i < p_sys->i_es; i++ ) { if( id == p_sys->es[i] ) break; } if( i >= p_sys->i_es ) continue; vlc_mutex_lock( &id->lock_rtsp ); TAB_REMOVE( id->i_rtsp_access, id->rtsp_access, rtsp->access[i_id] ); vlc_mutex_unlock( &id->lock_rtsp ); } vlc_mutex_unlock( &p_sys->lock_es ); RtspClientDel( p_stream, rtsp ); } break; } default: return VLC_EGENERIC; } httpd_MsgAdd( answer, "Server", PACKAGE_STRING ); httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body ); psz_cseq = httpd_MsgGet( query, "Cseq" ); if( psz_cseq ) i_cseq = atoi( psz_cseq ); else i_cseq = 0; httpd_MsgAdd( answer, "Cseq", "%d", i_cseq ); httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" ); if( psz_session ) { httpd_MsgAdd( answer, "Session", "%s;timeout=5", psz_session ); } return VLC_SUCCESS; } static int RtspCallbackId( httpd_callback_sys_t *p_args, httpd_client_t *cl, httpd_message_t *answer, httpd_message_t *query ) { sout_stream_id_t *id = (sout_stream_id_t*)p_args; sout_stream_t *p_stream = id->p_stream; sout_stream_sys_t *p_sys = p_stream->p_sys; char *psz_session = NULL; char *psz_cseq = NULL; int i_cseq = 0; if( answer == NULL || query == NULL ) { return VLC_SUCCESS; } //fprintf( stderr, "RtspCallback query: type=%d\n", query->i_type ); answer->i_proto = HTTPD_PROTO_RTSP; answer->i_version= query->i_version; answer->i_type = HTTPD_MSG_ANSWER; switch( query->i_type ) { case HTTPD_MSG_SETUP: { char *psz_transport = httpd_MsgGet( query, "Transport" ); //fprintf( stderr, "HTTPD_MSG_SETUP: transport=%s\n", psz_transport ); if( strstr( psz_transport, "multicast" ) && id->psz_destination ) { //fprintf( stderr, "HTTPD_MSG_SETUP: multicast\n" ); answer->i_status = 200; answer->psz_status = strdup( "OK" ); answer->i_body = 0; answer->p_body = NULL; psz_session = httpd_MsgGet( query, "Session" ); if( !psz_session ) { psz_session = malloc( 100 ); sprintf( psz_session, "%d", rand() ); } httpd_MsgAdd( answer, "Transport", "RTP/AVP/UDP;destination=%s;port=%d-%d;ttl=%d", id->psz_destination, id->i_port,id->i_port+1, p_sys->i_ttl ); } else if( strstr( psz_transport, "unicast" ) && strstr( psz_transport, "client_port=" ) ) { int i_port = atoi( strstr( psz_transport, "client_port=" ) + strlen("client_port=") ); char ip[NI_MAXNUMERICHOST], psz_access[17], psz_url[NI_MAXNUMERICHOST + 8]; sout_access_out_t *p_access; rtsp_client_t *rtsp = NULL; if( httpd_ClientIP( cl, ip ) == NULL ) { answer->i_status = 500; answer->psz_status = strdup( "Internal server error" ); answer->i_body = 0; answer->p_body = NULL; break; } //fprintf( stderr, "HTTPD_MSG_SETUP: unicast ip=%s port=%d\n", ip, i_port ); psz_session = httpd_MsgGet( query, "Session" ); if( !psz_session ) { psz_session = malloc( 100 ); sprintf( psz_session, "%d", rand() ); rtsp = RtspClientNew( p_stream, psz_session ); } else { rtsp = RtspClientGet( p_stream, psz_session ); if( rtsp == NULL ) { answer->i_status = 454; answer->psz_status = strdup( "Unknown session id" ); answer->i_body = 0; answer->p_body = NULL; break; } } /* first try to create the access out */ if( p_sys->i_ttl ) snprintf( psz_access, sizeof( psz_access ), "udp{raw,ttl=%d}", p_sys->i_ttl ); else strncpy( psz_access, "udp{raw}", sizeof( psz_access ) ); psz_access[sizeof( psz_access ) - 1] = '\0'; snprintf( psz_url, sizeof( psz_url ), ( strchr( ip, ':' ) != NULL ) ? "[%s]:%d" : "%s:%d", ip, i_port ); if( ( p_access = sout_AccessOutNew( p_stream->p_sout, psz_access, psz_url ) ) == NULL ) { msg_Err( p_stream, "cannot create the access out for %s://%s", psz_access, psz_url ); answer->i_status = 500; answer->psz_status = strdup( "Internal server error" ); answer->i_body = 0; answer->p_body = NULL; break; } TAB_APPEND( rtsp->i_id, rtsp->id, id ); TAB_APPEND( rtsp->i_access, rtsp->access, p_access ); answer->i_status = 200; answer->psz_status = strdup( "OK" ); answer->i_body = 0; answer->p_body = NULL; httpd_MsgAdd( answer, "Transport", "RTP/AVP/UDP;client_port=%d-%d", i_port, i_port + 1 ); } else /* TODO strstr( psz_transport, "interleaved" ) ) */ { answer->i_status = 461; answer->psz_status = strdup( "Unsupported Transport" ); answer->i_body = 0; answer->p_body = NULL; } break; } default: return VLC_EGENERIC; } httpd_MsgAdd( answer, "Server", "VLC Server" ); httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body ); psz_cseq = httpd_MsgGet( query, "Cseq" ); if( psz_cseq ) i_cseq = atoi( psz_cseq ); else i_cseq = 0; httpd_MsgAdd( answer, "Cseq", "%d", i_cseq ); httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" ); if( psz_session ) { httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session ); } return VLC_SUCCESS; } /**************************************************************************** * rtp_packetize_*: ****************************************************************************/ static 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 / I64C(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; out->p_buffer[ 8] = id->ssrc[0]; out->p_buffer[ 9] = id->ssrc[1]; out->p_buffer[10] = id->ssrc[2]; out->p_buffer[11] = id->ssrc[3]; out->i_buffer = 12; id->i_sequence++; } static void rtp_packetize_send( sout_stream_id_t *id, block_t *out ) { int i; vlc_mutex_lock( &id->lock_rtsp ); for( i = 0; i < id->i_rtsp_access; i++ ) { sout_AccessOutWrite( id->rtsp_access[i], block_Duplicate( out ) ); } vlc_mutex_unlock( &id->lock_rtsp ); if( id->p_access ) { sout_AccessOutWrite( id->p_access, out ); } else { block_Release( out ); } } static int rtp_packetize_mpa( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */ int i_count = ( in->i_buffer + i_max - 1 ) / i_max; uint8_t *p_data = in->p_buffer; int i_data = in->i_buffer; int i; for( i = 0; i < i_count; i++ ) { int i_payload = __MIN( i_max, i_data ); block_t *out = block_New( p_stream, 16 + i_payload ); /* rtp common header */ rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts ); /* mbz set to 0 */ out->p_buffer[12] = 0; out->p_buffer[13] = 0; /* fragment offset in the current frame */ out->p_buffer[14] = ( (i*i_max) >> 8 )&0xff; out->p_buffer[15] = ( (i*i_max) )&0xff; memcpy( &out->p_buffer[16], p_data, i_payload ); out->i_buffer = 16 + i_payload; out->i_dts = in->i_dts + i * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; } return VLC_SUCCESS; } /* rfc2250 */ static int rtp_packetize_mpv( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { int i_max = id->i_mtu - 12 - 4; /* payload max in one packet */ int i_count = ( in->i_buffer + i_max - 1 ) / i_max; uint8_t *p_data = in->p_buffer; int i_data = in->i_buffer; int i; int b_sequence_start = 0; int i_temporal_ref = 0; int i_picture_coding_type = 0; int i_fbv = 0, i_bfc = 0, i_ffv = 0, i_ffc = 0; int b_start_slice = 0; /* preparse this packet to get some info */ if( in->i_buffer > 4 ) { uint8_t *p = p_data; int i_rest = in->i_buffer; for( ;; ) { while( i_rest > 4 && ( p[0] != 0x00 || p[1] != 0x00 || p[2] != 0x01 ) ) { p++; i_rest--; } if( i_rest <= 4 ) { break; } p += 3; i_rest -= 4; if( *p == 0xb3 ) { /* sequence start code */ b_sequence_start = 1; } else if( *p == 0x00 && i_rest >= 4 ) { /* picture */ i_temporal_ref = ( p[1] << 2) |((p[2]>>6)&0x03); i_picture_coding_type = (p[2] >> 3)&0x07; if( i_rest >= 4 && ( i_picture_coding_type == 2 || i_picture_coding_type == 3 ) ) { i_ffv = (p[3] >> 2)&0x01; i_ffc = ((p[3]&0x03) << 1)|((p[4]>>7)&0x01); if( i_rest > 4 && i_picture_coding_type == 3 ) { i_fbv = (p[4]>>6)&0x01; i_bfc = (p[4]>>3)&0x07; } } } else if( *p <= 0xaf ) { b_start_slice = 1; } } } for( i = 0; i < i_count; i++ ) { int i_payload = __MIN( i_max, i_data ); block_t *out = block_New( p_stream, 16 + i_payload ); uint32_t h = ( i_temporal_ref << 16 )| ( b_sequence_start << 13 )| ( b_start_slice << 12 )| ( i == i_count - 1 ? 1 << 11 : 0 )| ( i_picture_coding_type << 8 )| ( i_fbv << 7 )|( i_bfc << 4 )|( i_ffv << 3 )|i_ffc; /* rtp common header */ rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts > 0 ? in->i_pts : in->i_dts ); /* 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 */ out->p_buffer[12] = ( h >> 24 )&0xff; out->p_buffer[13] = ( h >> 16 )&0xff; out->p_buffer[14] = ( h >> 8 )&0xff; out->p_buffer[15] = ( h )&0xff; memcpy( &out->p_buffer[16], p_data, i_payload ); out->i_buffer = 16 + i_payload; out->i_dts = in->i_dts + i * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; } return VLC_SUCCESS; } static int rtp_packetize_ac3( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { int i_max = id->i_mtu - 12 - 2; /* payload max in one packet */ int i_count = ( in->i_buffer + i_max - 1 ) / i_max; uint8_t *p_data = in->p_buffer; int i_data = in->i_buffer; int i; for( i = 0; i < i_count; i++ ) { int i_payload = __MIN( i_max, i_data ); block_t *out = block_New( p_stream, 14 + i_payload ); /* rtp common header */ rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts ); /* unit count */ out->p_buffer[12] = 1; /* unit header */ out->p_buffer[13] = 0x00; /* data */ memcpy( &out->p_buffer[14], p_data, i_payload ); out->i_buffer = 14 + i_payload; out->i_dts = in->i_dts + i * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; } return VLC_SUCCESS; } static int rtp_packetize_split( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { int i_max = id->i_mtu - 12; /* payload max in one packet */ int i_count = ( in->i_buffer + i_max - 1 ) / i_max; uint8_t *p_data = in->p_buffer; int i_data = in->i_buffer; int i; for( i = 0; i < i_count; i++ ) { int i_payload = __MIN( i_max, i_data ); block_t *out = block_New( p_stream, 12 + i_payload ); /* rtp common header */ rtp_packetize_common( id, out, ((i == i_count - 1)?1:0), (in->i_pts > 0 ? in->i_pts : in->i_dts) ); memcpy( &out->p_buffer[12], p_data, i_payload ); out->i_buffer = 12 + i_payload; out->i_dts = in->i_dts + i * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; } return VLC_SUCCESS; } /* rfc3016 */ static int rtp_packetize_mp4a_latm( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { int i_max = id->i_mtu - 14; /* payload max in one packet */ int latmhdrsize = in->i_buffer / 0xff + 1; int i_count = ( in->i_buffer + i_max - 1 ) / i_max; uint8_t *p_data = in->p_buffer, *p_header = NULL; int i_data = in->i_buffer; int i; for( i = 0; i < i_count; i++ ) { int i_payload = __MIN( i_max, i_data ); block_t *out; if( i != 0 ) latmhdrsize = 0; out = block_New( p_stream, 12 + latmhdrsize + i_payload ); /* rtp common header */ rtp_packetize_common( id, out, ((i == i_count - 1) ? 1 : 0), (in->i_pts > 0 ? in->i_pts : in->i_dts) ); if( i == 0 ) { int tmp = in->i_buffer; p_header=out->p_buffer+12; while( tmp > 0xfe ) { *p_header = 0xff; p_header++; tmp -= 0xff; } *p_header = tmp; } memcpy( &out->p_buffer[12+latmhdrsize], p_data, i_payload ); out->i_buffer = 12 + latmhdrsize + i_payload; out->i_dts = in->i_dts + i * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; } return VLC_SUCCESS; } static int rtp_packetize_l16( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { int i_max = id->i_mtu - 12; /* payload max in one packet */ int i_count = ( in->i_buffer + i_max - 1 ) / i_max; uint8_t *p_data = in->p_buffer; int i_data = in->i_buffer; int i_packet = 0; while( i_data > 0 ) { int i_payload = (__MIN( i_max, i_data )/4)*4; block_t *out = block_New( p_stream, 12 + i_payload ); /* rtp common header */ rtp_packetize_common( id, out, 0, (in->i_pts > 0 ? in->i_pts : in->i_dts) ); memcpy( &out->p_buffer[12], p_data, i_payload ); out->i_buffer = 12 + i_payload; out->i_dts = in->i_dts + i_packet * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; i_packet++; } return VLC_SUCCESS; } static int rtp_packetize_l8( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { int i_max = id->i_mtu - 12; /* payload max in one packet */ int i_count = ( in->i_buffer + i_max - 1 ) / i_max; uint8_t *p_data = in->p_buffer; int i_data = in->i_buffer; int i_packet = 0; while( i_data > 0 ) { int i_payload = (__MIN( i_max, i_data )/2)*2; block_t *out = block_New( p_stream, 12 + i_payload ); /* rtp common header */ rtp_packetize_common( id, out, 0, (in->i_pts > 0 ? in->i_pts : in->i_dts) ); memcpy( &out->p_buffer[12], p_data, i_payload ); out->i_buffer = 12 + i_payload; out->i_dts = in->i_dts + i_packet * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; i_packet++; } return VLC_SUCCESS; } static int rtp_packetize_mp4a( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { int i_max = id->i_mtu - 16; /* payload max in one packet */ int i_count = ( in->i_buffer + i_max - 1 ) / i_max; uint8_t *p_data = in->p_buffer; int i_data = in->i_buffer; int i; for( i = 0; i < i_count; i++ ) { int i_payload = __MIN( i_max, i_data ); block_t *out = block_New( p_stream, 16 + i_payload ); /* rtp common header */ rtp_packetize_common( id, out, ((i == i_count - 1)?1:0), (in->i_pts > 0 ? in->i_pts : in->i_dts) ); /* AU headers */ /* AU headers length (bits) */ out->p_buffer[12] = 0; out->p_buffer[13] = 2*8; /* for each AU length 13 bits + idx 3bits, */ out->p_buffer[14] = ( in->i_buffer >> 5 )&0xff; out->p_buffer[15] = ( (in->i_buffer&0xff)<<3 )|0; memcpy( &out->p_buffer[16], p_data, i_payload ); out->i_buffer = 16 + i_payload; out->i_dts = in->i_dts + i * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; } return VLC_SUCCESS; } /* rfc2429 */ #define RTP_H263_HEADER_SIZE (2) // plen = 0 #define RTP_H263_PAYLOAD_START (14) // plen = 0 static int rtp_packetize_h263( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { uint8_t *p_data = in->p_buffer; int i_data = in->i_buffer; int i; int i_max = id->i_mtu - 12 - RTP_H263_HEADER_SIZE; /* payload max in one packet */ int i_count; int b_p_bit; int b_v_bit = 0; // no pesky error resilience int i_plen = 0; // normally plen=0 for PSC packet int i_pebit = 0; // because plen=0 uint16_t h; if( i_data < 2 ) { return VLC_EGENERIC; } if( p_data[0] || p_data[1] ) { return VLC_EGENERIC; } /* remove 2 leading 0 bytes */ p_data += 2; i_data -= 2; i_count = ( i_data + i_max - 1 ) / i_max; for( i = 0; i < i_count; i++ ) { int i_payload = __MIN( i_max, i_data ); block_t *out = block_New( p_stream, RTP_H263_PAYLOAD_START + i_payload ); b_p_bit = (i == 0) ? 1 : 0; h = ( b_p_bit << 10 )| ( b_v_bit << 9 )| ( i_plen << 3 )| i_pebit; /* rtp common header */ //b_m_bit = 1; // always contains end of frame rtp_packetize_common( id, out, (i == i_count - 1)?1:0, in->i_pts > 0 ? in->i_pts : in->i_dts ); /* h263 header */ out->p_buffer[12] = ( h >> 8 )&0xff; out->p_buffer[13] = ( h )&0xff; memcpy( &out->p_buffer[RTP_H263_PAYLOAD_START], p_data, i_payload ); out->i_buffer = RTP_H263_PAYLOAD_START + i_payload; out->i_dts = in->i_dts + i * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; } return VLC_SUCCESS; } static int rtp_packetize_amr( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *in ) { int i_max = id->i_mtu - 14; /* payload max in one packet */ int i_count = ( in->i_buffer + i_max - 1 ) / i_max; uint8_t *p_data = in->p_buffer; int i_data = in->i_buffer; int i; /* Only supports octet-aligned mode */ for( i = 0; i < i_count; i++ ) { int i_payload = __MIN( i_max, i_data ); block_t *out = block_New( p_stream, 14 + i_payload ); /* rtp common header */ rtp_packetize_common( id, out, ((i == i_count - 1)?1:0), (in->i_pts > 0 ? in->i_pts : in->i_dts) ); /* Payload header */ out->p_buffer[12] = 0xF0; /* CMR */ out->p_buffer[13] = p_data[0]&0x7C; /* ToC */ /* FIXME: frame type */ /* FIXME: are we fed multiple frames ? */ memcpy( &out->p_buffer[14], p_data+1, i_payload-1 ); out->i_buffer = 14 + i_payload-1; out->i_dts = in->i_dts + i * in->i_length / i_count; out->i_length = in->i_length / i_count; rtp_packetize_send( id, out ); p_data += i_payload; i_data -= i_payload; } return VLC_SUCCESS; }