rtp.c
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上传日期:2009-03-27
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- /*****************************************************************************
- * rtp.c: rtp stream output module
- *****************************************************************************
- * Copyright (C) 2003-2004 VideoLAN
- * $Id: rtp.c 8412 2004-08-10 15:02:11Z hartman $
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111, 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 "network.h"
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define DST_TEXT N_("Destination")
- #define DST_LONGTEXT N_(
- "Allows you to specify the output URL used for the streaming output." )
- #define SDP_TEXT N_("SDP")
- #define SDP_LONGTEXT N_(
- "Allows you to specify the SDP used for the streaming output. "
- "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_(
- "Allows you to specify the muxer used for the streaming output." )
- #define NAME_TEXT N_("Session name")
- #define NAME_LONGTEXT N_(
- "Allows you to specify the session name used for the streaming output." )
- #define DESC_TEXT N_("Session description")
- #define DESC_LONGTEXT N_(
- "Allows you to give a broader description of the stream." )
- #define URL_TEXT N_("Session URL")
- #define URL_LONGTEXT N_(
- "Allows you to specify a URL with additional information on the stream." )
- #define EMAIL_TEXT N_("Session email")
- #define EMAIL_LONGTEXT N_(
- "Allows you to specify contact e-mail address for this session." )
- #define PORT_TEXT N_("Port")
- #define PORT_LONGTEXT N_(
- "Allows you to specify the base port used for the RTP streaming." )
- #define PORT_AUDIO_TEXT N_("Audio port")
- #define PORT_AUDIO_LONGTEXT N_(
- "Allows you to specify the default audio port used for the RTP streaming." )
- #define PORT_VIDEO_TEXT N_("Video port")
- #define PORT_VIDEO_LONGTEXT N_(
- "Allows you to specify the default video port used for the RTP streaming." )
- #define TTL_TEXT N_("Time to live")
- #define TTL_LONGTEXT N_(
- "Allows you to specify the time to live for the output stream." )
- static int Open ( vlc_object_t * );
- static void Close( vlc_object_t * );
- #define SOUT_CFG_PREFIX "sout-rtp-"
- vlc_module_begin();
- set_description( _("RTP stream output") );
- set_capability( "sout stream", 0 );
- add_shortcut( "rtp" );
- 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-audio", 1234, NULL, PORT_AUDIO_TEXT,
- PORT_LONGTEXT, VLC_TRUE );
- add_integer( SOUT_CFG_PREFIX "port-video", 1236, NULL, PORT_VIDEO_TEXT,
- PORT_LONGTEXT, VLC_TRUE );
- add_integer( SOUT_CFG_PREFIX "port", 1238, NULL, PORT_TEXT,
- PORT_LONGTEXT, VLC_TRUE );
- add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL, TTL_TEXT,
- TTL_LONGTEXT, VLC_TRUE );
- 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", 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;
- /* 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;
- vlc_value_t val;
- 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 == ' ' )
- {
- 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" );
- }
- if( !p_sys->psz_destination || *p_sys->psz_destination == ' ' )
- {
- sout_cfg_t *p_cfg;
- vlc_bool_t b_ok = VLC_FALSE;
- 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_ok = VLC_TRUE;
- break;
- }
- }
- }
- if( !b_ok )
- {
- vlc_value_t val2;
- var_Get( p_stream, SOUT_CFG_PREFIX "sdp", &val2 );
- if( !strncasecmp( val2.psz_string, "rtsp", 4 ) )
- b_ok = VLC_TRUE;
- free( val2.psz_string );
- }
- if( !b_ok )
- {
- 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 );
- p_sys->i_ttl = val.i_int;
- 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;
- char access[100];
- char url[strlen( p_sys->psz_destination ) + 1 + 12 + 1];
- /* 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)" );
- 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}" );
- }
- sprintf( url, "%s:%d", p_sys->psz_destination, p_sys->i_port );
- 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 )
- {
- /* better than nothing */
- p_sys->i_mtu = 1500;
- }
- /* 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
- c= /ttl should only be added in case of multicast
- 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 */
- p_sys->psz_sdp =
- malloc( 10 + 30 + 10 + strlen( p_sys->psz_session_name ) +
- 10 + strlen( p_sys->psz_session_description ) + 10 + strlen( p_sys->psz_session_url ) +
- 10 + strlen( p_sys->psz_session_email ) + 10 + strlen( p_sys->psz_destination ) +
- 10 + 10 + strlen( PACKAGE_STRING ) +
- 20 + 10 + 20 + 10 + strlen( psz_rtpmap ) );
- sprintf( p_sys->psz_sdp,
- "v=0rn"
- "o=- "I64Fd" %d IN IP4 127.0.0.1rn"
- "s=%srn"
- "i=%srn"
- "u=%srn"
- "e=%srn"
- "t=0 0rn" /* permanent stream */ /* when scheduled from vlm, we should set this info correctly */
- "a=tool:"PACKAGE_STRING"rn"
- "c=IN IP4 %s/%drn"
- "m=video %d RTP/AVP %drn"
- "a=rtpmap:%d %srn",
- p_sys->i_sdp_id, p_sys->i_sdp_version,
- p_sys->psz_session_name,
- p_sys->psz_session_description,
- p_sys->psz_session_url,
- p_sys->psz_session_email,
- p_sys->psz_destination, p_sys->i_ttl,
- p_sys->i_port, p_sys->i_payload_type,
- p_sys->i_payload_type, psz_rtpmap );
- fprintf( stderr, "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 == ' ' )
- 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 );
- }
- }
- 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 0
- /* why? is this disabled? */
- 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;
- }
- #endif
- if( p_sys->psz_sdp )
- {
- free( p_sys->psz_sdp );
- }
- 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 used 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 used 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 used 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
- c= /ttl should only be added in case of multicast
- 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( sout_stream_t *p_stream, 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;
- int i;
- i_size = strlen( "v=0rn" ) +
- strlen( "o=- * * IN IP4 127.0.0.1rn" ) + 10 + 10 +
- strlen( "s=*rn" ) + strlen( p_sys->psz_session_name ) +
- strlen( "i=*rn" ) + strlen( p_sys->psz_session_description ) +
- strlen( "u=*rn" ) + strlen( p_sys->psz_session_url ) +
- strlen( "e=*rn" ) + strlen( p_sys->psz_session_email ) +
- strlen( "t=0 0rn" ) + /* permanent stream */ /* when scheduled from vlm, we should set this info correctly */
- strlen( "a=tool:"PACKAGE_STRING"rn" ) +
- strlen( "c=IN IP4 */*rn" ) + 20 + 10 +
- strlen( psz_destination ? psz_destination : "0.0.0.0") ;
- 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 *rn" ) + 10 + 10;
- if( id->psz_rtpmap )
- {
- i_size += strlen( "a=rtpmap:* *rn" ) + strlen( id->psz_rtpmap )+10;
- }
- if( id->psz_fmtp )
- {
- i_size += strlen( "a=fmtp:* *rn" ) + strlen( id->psz_fmtp ) + 10;
- }
- if( b_rtsp )
- {
- i_size += strlen( "a=control:*/trackid=*rn" ) + strlen( p_sys->psz_rtsp_control ) + 10;
- }
- }
- p = psz_sdp = malloc( i_size );
- p += sprintf( p, "v=0rn" );
- p += sprintf( p, "o=- "I64Fd" %d IN IP4 127.0.0.1rn",
- p_sys->i_sdp_id, p_sys->i_sdp_version );
- if( *p_sys->psz_session_name )
- p += sprintf( p, "s=%srn", p_sys->psz_session_name );
- if( *p_sys->psz_session_description )
- p += sprintf( p, "i=%srn", p_sys->psz_session_description );
- if( *p_sys->psz_session_url )
- p += sprintf( p, "u=%srn", p_sys->psz_session_url );
- if( *p_sys->psz_session_email )
- p += sprintf( p, "e=%srn", p_sys->psz_session_email );
- p += sprintf( p, "t=0 0rn" ); /* permanent stream */ /* when scheduled from vlm, we should set this info correctly */
- p += sprintf( p, "a=tool:"PACKAGE_STRING"rn" );
- p += sprintf( p, "c=IN IP4 %s/%drn", psz_destination ? psz_destination : "0.0.0.0",
- p_sys->i_ttl );
- 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 %drn",
- id->i_port, id->i_payload_type );
- }
- else if( id->i_cat == VIDEO_ES )
- {
- p += sprintf( p, "m=video %d RTP/AVP %drn",
- id->i_port, id->i_payload_type );
- }
- else
- {
- continue;
- }
- if( id->psz_rtpmap )
- {
- p += sprintf( p, "a=rtpmap:%d %srn", id->i_payload_type,
- id->psz_rtpmap );
- }
- if( id->psz_fmtp )
- {
- p += sprintf( p, "a=fmtp:%d %srn", id->i_payload_type,
- id->psz_fmtp );
- }
- if( b_rtsp )
- {
- p += sprintf( p, "a=control:%s/trackid=%drn", p_sys->psz_rtsp_control, i );
- }
- }
- 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_h263 ( 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] = ' ';
- }
- 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[100];
- char url[strlen( p_sys->psz_destination ) + 1 + 12 + 1];
- /* first try to 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}" );
- }
- sprintf( url, "%s:%d", p_sys->psz_destination, i_port );
- 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' ):
- {
- char hexa[2*p_fmt->i_extra +1];
- id->i_payload_type = p_sys->i_payload_type++;
- id->i_clock_rate = p_fmt->audio.i_rate;
- 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 );
- break;
- }
- default:
- msg_Err( p_stream, "cannot add this stream (unsupported "
- "codec:%4.4s)", (char*)&p_fmt->i_codec );
- 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 )
- {
- /* better than nothing */
- id->i_mtu = 1500;
- }
- msg_Dbg( p_stream, "using mtu=%d", 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 );
- fprintf( stderr, "rtsp: adding %sn", psz_urlc );
- id->p_rtsp_url = httpd_UrlNewUnique( p_sys->p_rtsp_host, psz_urlc, 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++;
- fprintf( stderr, "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 ) 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;
- int 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, 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=%dn", 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 = (announce_method_t *)
- malloc(sizeof(announce_method_t));
- /* 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;
- }
- p_method->i_type = METHOD_TYPE_SAP;
- p_method->psz_address = NULL; /* FIXME */
- p_method->i_ip_version = 4; /* FIXME ! */
- if( p_sys->i_es > 0 && p_sys->psz_sdp && *p_sys->psz_sdp )
- {
- p_sys->p_session = sout_AnnounceRegisterSDP( p_sout, p_sys->psz_sdp,
- 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 = 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 );
- 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,
- 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;
- 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;
- fprintf( stderr, "rtsp setup: %s : %d / %sn", 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 );
- 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;
- if( answer == NULL || query == NULL )
- {
- return VLC_SUCCESS;
- }
- fprintf( stderr, "RtspCallback query: type=%dn", 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 = 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", "VLC Server" );
- httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
- httpd_MsgAdd( answer, "Cseq", "%d", atoi( httpd_MsgGet( query, "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;
- if( answer == NULL || query == NULL )
- {
- return VLC_SUCCESS;
- }
- fprintf( stderr, "RtspCallback query: type=%dn", 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=%sn", psz_transport );
- if( strstr( psz_transport, "multicast" ) && id->psz_destination )
- {
- fprintf( stderr, "HTTPD_MSG_SETUP: multicastn" );
- 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 == 0 )
- {
- 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 = httpd_ClientIP( cl );
- char psz_access[100];
- char psz_url[100];
- sout_access_out_t *p_access;
- rtsp_client_t *rtsp = NULL;
- if( ip == NULL )
- {
- answer->i_status = 400;
- 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=%dn",
- ip, i_port );
- psz_session = httpd_MsgGet( query, "Session" );
- if( *psz_session == 0 )
- {
- 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 )
- {
- /* FIXME right error code */
- answer->i_status = 400;
- answer->psz_status = strdup( "Unknown session id" );
- answer->i_body = 0;
- answer->p_body = NULL;
- free( ip );
- break;
- }
- }
- /* first try to create the access out */
- if( p_sys->i_ttl > 0 )
- sprintf( psz_access, "udp{raw,ttl=%d}", p_sys->i_ttl );
- else
- sprintf( psz_access, "udp{raw}" );
- sprintf( psz_url, "%s:%d", ip, i_port );
- free( ip );
-
- 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 = 400;
- answer->psz_status = strdup( "Server internal 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 = 400;
- answer->psz_status = strdup( "Bad Request" );
- 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 );
- httpd_MsgAdd( answer, "Cseq", "%d", atoi( httpd_MsgGet( query, "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;
- }
- 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;
- }