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vlc-2-2
Commit 21a5355e authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont
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Split RTP sout into multiple pieces. 

Even then rtp.c is quite big...
parent f7c53756
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Showing with 681 additions and 548 deletions
modules/stream_out/Modules.am
View file @ 21a5355e
...@@ -6,7 +6,7 @@ SOURCES_stream_out_duplicate = duplicate.c ...@@ -6,7 +6,7 @@ SOURCES_stream_out_duplicate = duplicate.c
SOURCES_stream_out_es = es.c SOURCES_stream_out_es = es.c
SOURCES_stream_out_display = display.c SOURCES_stream_out_display = display.c
SOURCES_stream_out_gather = gather.c SOURCES_stream_out_gather = gather.c
SOURCES_stream_out_rtp = rtp.c SOURCES_stream_out_rtp = rtp.c rtp.h rtsp.c
SOURCES_stream_out_switcher = switcher.c SOURCES_stream_out_switcher = switcher.c
SOURCES_stream_out_bridge = bridge.c SOURCES_stream_out_bridge = bridge.c
SOURCES_stream_out_mosaic_bridge = mosaic_bridge.c SOURCES_stream_out_mosaic_bridge = mosaic_bridge.c
......
modules/stream_out/rtp.c
View file @ 21a5355e
...@@ -41,6 +41,8 @@ ...@@ -41,6 +41,8 @@
#include <vlc_charset.h> #include <vlc_charset.h>
#include <vlc_strings.h> #include <vlc_strings.h>
#include "rtp.h"
/***************************************************************************** /*****************************************************************************
* Module descriptor * Module descriptor
*****************************************************************************/ *****************************************************************************/
...@@ -156,22 +158,6 @@ static int Del ( sout_stream_t *, sout_stream_id_t * ); ...@@ -156,22 +158,6 @@ static int Del ( sout_stream_t *, sout_stream_id_t * );
static int Send( sout_stream_t *, sout_stream_id_t *, static int Send( sout_stream_t *, sout_stream_id_t *,
block_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 struct sout_stream_sys_t
{ {
/* sdp */ /* sdp */
...@@ -231,45 +217,6 @@ struct sout_stream_sys_t ...@@ -231,45 +217,6 @@ struct sout_stream_sys_t
rtsp_client_t **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;
int i_bitrate;
/* 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 int AccessOutGrabberWrite( sout_access_out_t *, block_t * );
static void SDPHandleUrl( sout_stream_t *, char * ); static void SDPHandleUrl( sout_stream_t *, char * );
...@@ -277,17 +224,6 @@ static void SDPHandleUrl( sout_stream_t *, char * ); ...@@ -277,17 +224,6 @@ static void SDPHandleUrl( sout_stream_t *, char * );
static int SapSetup( sout_stream_t *p_stream ); static int SapSetup( sout_stream_t *p_stream );
static int FileSetup( 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 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 *, const char *psz_session );
static rtsp_client_t *RtspClientGet( sout_stream_t *, const char *psz_session );
static void RtspClientDel( sout_stream_t *, rtsp_client_t * );
/***************************************************************************** /*****************************************************************************
* Open: * Open:
...@@ -760,7 +696,7 @@ static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url ) ...@@ -760,7 +696,7 @@ static void SDPHandleUrl( sout_stream_t *p_stream, char *psz_url )
a= charset: (normally charset should be UTF-8, this can be used to override s= and i=) a= charset: (normally charset should be UTF-8, this can be used to override s= and i=)
a= x-plgroup: (missing) a= x-plgroup: (missing)
RTP packets need to get the correct src IP address */ RTP packets need to get the correct src IP address */
static char *SDPGenerate( const sout_stream_t *p_stream, /*static*/ char *SDPGenerate( const sout_stream_t *p_stream,
const char *psz_destination, vlc_bool_t b_rtsp ) const char *psz_destination, vlc_bool_t b_rtsp )
{ {
sout_stream_sys_t *p_sys = p_stream->p_sys; sout_stream_sys_t *p_sys = p_stream->p_sys;
...@@ -1538,486 +1474,6 @@ static int HttpCallback( httpd_file_sys_t *p_args, ...@@ -1538,486 +1474,6 @@ static int HttpCallback( httpd_file_sys_t *p_args,
return VLC_SUCCESS; return VLC_SUCCESS;
} }
/****************************************************************************
* RTSP:
****************************************************************************/
static rtsp_client_t *RtspClientNew( sout_stream_t *p_stream, const char *psz_session )
{
rtsp_client_t *rtsp = malloc( sizeof( rtsp_client_t ));
rtsp->psz_session = strdup( 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, const 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_SETUP, 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;
const char *psz_session = NULL;
const char *psz_cseq = NULL;
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;
answer->i_body = 0;
answer->p_body = NULL;
if( httpd_MsgGet( query, "Require" ) != NULL )
{
answer->i_status = 551;
httpd_MsgAdd( query, "Unsupported", "%s",
httpd_MsgGet( query, "Require" ) );
}
else
switch( query->i_type )
{
case HTTPD_MSG_DESCRIBE:
{
char *psz_sdp = SDPGenerate( p_stream, psz_destination, VLC_TRUE );
answer->i_status = 200;
httpd_MsgAdd( answer, "Content-Type", "%s", "application/sdp" );
httpd_MsgAdd( answer, "Content-Base", "%s", p_sys->psz_rtsp_control );
answer->p_body = (uint8_t *)psz_sdp;
answer->i_body = strlen( psz_sdp );
break;
}
case HTTPD_MSG_SETUP:
answer->i_status = 459;
break;
case HTTPD_MSG_PLAY:
{
rtsp_client_t *rtsp;
/* for now only multicast so easy */
answer->i_status = 200;
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:
answer->i_status = 405;
httpd_MsgAdd( answer, "Allow", "DESCRIBE, PLAY, TEARDOWN" );
break;
case HTTPD_MSG_TEARDOWN:
{
rtsp_client_t *rtsp;
/* for now only multicast so easy again */
answer->i_status = 200;
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", "%s", PACKAGE_STRING );
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
psz_cseq = httpd_MsgGet( query, "Cseq" );
if( psz_cseq )
httpd_MsgAdd( answer, "Cseq", "%s", psz_cseq );
httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
if( psz_session )
httpd_MsgAdd( answer, "Session", "%s;timeout=5", psz_session );
return VLC_SUCCESS;
}
/** Finds the next transport choice */
static inline const char *transport_next( const char *str )
{
/* Looks for comma */
str = strchr( str, ',' );
if( str == NULL )
return NULL; /* No more transport options */
str++; /* skips comma */
while( strchr( "\r\n\t ", *str ) )
str++;
return (*str) ? str : NULL;
}
/** Finds the next transport parameter */
static inline const char *parameter_next( const char *str )
{
while( strchr( ",;", *str ) == NULL )
str++;
return (*str == ';') ? (str + 1) : NULL;
}
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_init[21];
const char *psz_session;
const char *psz_cseq;
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;
answer->i_body = 0;
answer->p_body = NULL;
/* Create new session ID if needed */
psz_session = httpd_MsgGet( query, "Session" );
if( psz_session == NULL )
{
/* FIXME: should be somewhat secure randomness */
snprintf( psz_session_init, sizeof(psz_session_init), I64Fd,
NTPtime64() + rand() );
}
if( httpd_MsgGet( query, "Require" ) != NULL )
{
answer->i_status = 551;
httpd_MsgAdd( query, "Unsupported", "%s",
httpd_MsgGet( query, "Require" ) );
}
else
switch( query->i_type )
{
case HTTPD_MSG_SETUP:
{
answer->i_status = 461;
for( const char *tpt = httpd_MsgGet( query, "Transport" );
tpt != NULL;
tpt = transport_next( tpt ) )
{
vlc_bool_t b_multicast = VLC_TRUE, b_unsupp = VLC_FALSE;
unsigned loport = 5004, hiport = 5005; /* from RFC3551 */
/* Check transport protocol. */
/* Currently, we only support RTP/AVP over UDP */
if( strncmp( tpt, "RTP/AVP", 7 ) )
continue;
tpt += 7;
if( strncmp( tpt, "/UDP", 4 ) == 0 )
tpt += 4;
if( strchr( ";,", *tpt ) == NULL )
continue;
/* Parse transport options */
for( const char *opt = parameter_next( tpt );
opt != NULL;
opt = parameter_next( opt ) )
{
if( strncmp( opt, "multicast", 9 ) == 0)
b_multicast = VLC_TRUE;
else
if( strncmp( opt, "unicast", 7 ) == 0 )
b_multicast = VLC_FALSE;
else
if( sscanf( opt, "client_port=%u-%u", &loport, &hiport ) == 2 )
;
else
if( strncmp( opt, "mode=", 5 ) == 0 )
{
if( strncasecmp( opt + 5, "play", 4 )
&& strncasecmp( opt + 5, "\"PLAY\"", 6 ) )
{
/* Not playing?! */
b_unsupp = VLC_TRUE;
break;
}
}
else
{
/*
* Every other option is unsupported:
*
* "source" and "append" are invalid.
*
* For multicast, "port", "layers", "ttl" are set by the
* stream output configuration.
*
* For unicast, we do not allow "destination" as it
* carries a DoS risk, and we decide on "server_port".
*
* "interleaved" and "ssrc" are not implemented.
*/
b_unsupp = VLC_TRUE;
break;
}
}
if( b_unsupp )
continue;
if( b_multicast )
{
if( id->psz_destination == NULL )
continue;
answer->i_status = 200;
httpd_MsgAdd( answer, "Transport",
"RTP/AVP/UDP;destination=%s;port=%d-%d;"
"ttl=%d;mode=play",
id->psz_destination, id->i_port, id->i_port+1,
( p_sys->i_ttl > 0 ) ? p_sys->i_ttl : 1 );
}
else
{
char ip[NI_MAXNUMERICHOST], psz_access[22],
url[NI_MAXNUMERICHOST + 8];
sout_access_out_t *p_access;
rtsp_client_t *rtsp = NULL;
if( ( hiport - loport ) > 1 )
continue;
if( psz_session == NULL )
{
psz_session = psz_session_init;
rtsp = RtspClientNew( p_stream, psz_session );
}
else
{
/* FIXME: we probably need to remove an access out,
* if there is already one for the same ID */
rtsp = RtspClientGet( p_stream, psz_session );
if( rtsp == NULL )
{
answer->i_status = 454;
continue;
}
}
if( httpd_ClientIP( cl, ip ) == NULL )
{
answer->i_status = 500;
continue;
}
if( p_sys->i_ttl )
snprintf( psz_access, sizeof( psz_access ),
"udp{raw,rtcp,ttl=%d}", p_sys->i_ttl );
else
strcpy( psz_access, "udp{raw,rtcp}" );
snprintf( url, sizeof( url ),
( strchr( ip, ':' ) != NULL ) ? "[%s]:%d" : "%s:%d",
ip, loport );
p_access = sout_AccessOutNew( p_stream->p_sout,
psz_access, url );
if( p_access == NULL )
{
msg_Err( p_stream,
"cannot create access output for %s://%s",
psz_access, url );
answer->i_status = 500;
break;
}
TAB_APPEND( rtsp->i_id, rtsp->id, id );
TAB_APPEND( rtsp->i_access, rtsp->access, p_access );
char *src = var_GetNonEmptyString (p_access, "src-addr");
int sport = var_GetInteger (p_access, "src-port");
httpd_ServerIP( cl, ip );
if( ( src != NULL ) && strcmp( src, ip ) )
{
/* Specify source IP if it is different from the RTSP
* control connection server address */
char *ptr = strchr( src, '%' );
if( ptr != NULL ) *ptr = '\0'; /* remove scope ID */
httpd_MsgAdd( answer, "Transport",
"RTP/AVP/UDP;unicast;source=%s;"
"client_port=%u-%u;server_port=%u-%u;"
"mode=play",
src, loport, hiport, sport, sport + 1 );
}
else
{
httpd_MsgAdd( answer, "Transport",
"RTP/AVP/UDP;unicast;"
"client_port=%u-%u;server_port=%u-%u;"
"mode=play",
loport, hiport, sport, sport + 1 );
}
answer->i_status = 200;
free( src );
}
break;
}
break;
}
default:
answer->i_status = 460;
break;
}
psz_cseq = httpd_MsgGet( query, "Cseq" );
if( psz_cseq )
httpd_MsgAdd( answer, "Cseq", "%s", psz_cseq );
httpd_MsgAdd( answer, "Server", "%s", PACKAGE_STRING );
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
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_*: * rtp_packetize_*:
****************************************************************************/ ****************************************************************************/
......
modules/stream_out/rtp.h 0 → 100644
View file @ 21a5355e
/*****************************************************************************
* rtp.h: rtp stream output module header
*****************************************************************************
* Copyright (C) 2003-2007 the VideoLAN team
* $Id: rtp.c 21407 2007-08-22 20:10:41Z courmisch $
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Rémi Denis-Courmont
*
* 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.
*****************************************************************************/
typedef struct rtsp_client_t rtsp_client_t;
int RtspSetup( sout_stream_t *p_stream, vlc_url_t * );
int RtspCallbackId( httpd_callback_sys_t *, httpd_client_t *,
httpd_message_t *, httpd_message_t * );
void RtspClientDel( sout_stream_t *, rtsp_client_t * );
char *SDPGenerate( const sout_stream_t *p_stream,
const char *psz_destination, vlc_bool_t b_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;
int i_bitrate;
/* 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;
};
modules/stream_out/rtsp.c 0 → 100644
View file @ 21a5355e
/*****************************************************************************
* rtsp.c: RTSP support for RTP stream output module
*****************************************************************************
* Copyright (C) 2003-2007 the VideoLAN team
* $Id: rtp.c 21407 2007-08-22 20:10:41Z courmisch $
*
* 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 <vlc/vlc.h>
#include <vlc_sout.h>
#include <vlc_block.h>
#include <vlc_httpd.h>
#include <vlc_url.h>
#include <vlc_network.h>
#include <vlc_charset.h>
#include <vlc_strings.h>
#include "rtp.h"
/* For unicast/interleaved streaming */
struct rtsp_client_t
{
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;
};
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;
};
static int RtspCallback( httpd_callback_sys_t *p_args,
httpd_client_t *cl,
httpd_message_t *answer, httpd_message_t *query );
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_SETUP, 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 rtsp_client_t *RtspClientNew( sout_stream_t *p_stream, const char *psz_session )
{
rtsp_client_t *rtsp = malloc( sizeof( rtsp_client_t ));
rtsp->psz_session = strdup( 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, const 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 );
}
/** Aggregate RTSP callback */
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;
const char *psz_session = NULL;
const char *psz_cseq = NULL;
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;
answer->i_body = 0;
answer->p_body = NULL;
if( httpd_MsgGet( query, "Require" ) != NULL )
{
answer->i_status = 551;
httpd_MsgAdd( query, "Unsupported", "%s",
httpd_MsgGet( query, "Require" ) );
}
else
switch( query->i_type )
{
case HTTPD_MSG_DESCRIBE:
{
char *psz_sdp = SDPGenerate( p_stream, psz_destination, VLC_TRUE );
answer->i_status = 200;
httpd_MsgAdd( answer, "Content-Type", "%s", "application/sdp" );
httpd_MsgAdd( answer, "Content-Base", "%s", p_sys->psz_rtsp_control );
answer->p_body = (uint8_t *)psz_sdp;
answer->i_body = strlen( psz_sdp );
break;
}
case HTTPD_MSG_SETUP:
answer->i_status = 459;
break;
case HTTPD_MSG_PLAY:
{
rtsp_client_t *rtsp;
/* for now only multicast so easy */
answer->i_status = 200;
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:
answer->i_status = 405;
httpd_MsgAdd( answer, "Allow", "DESCRIBE, PLAY, TEARDOWN" );
break;
case HTTPD_MSG_TEARDOWN:
{
rtsp_client_t *rtsp;
/* for now only multicast so easy again */
answer->i_status = 200;
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", "%s", PACKAGE_STRING );
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
psz_cseq = httpd_MsgGet( query, "Cseq" );
if( psz_cseq )
httpd_MsgAdd( answer, "Cseq", "%s", psz_cseq );
httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
if( psz_session )
httpd_MsgAdd( answer, "Session", "%s;timeout=5", psz_session );
return VLC_SUCCESS;
}
/** Finds the next transport choice */
static inline const char *transport_next( const char *str )
{
/* Looks for comma */
str = strchr( str, ',' );
if( str == NULL )
return NULL; /* No more transport options */
str++; /* skips comma */
while( strchr( "\r\n\t ", *str ) )
str++;
return (*str) ? str : NULL;
}
/** Finds the next transport parameter */
static inline const char *parameter_next( const char *str )
{
while( strchr( ",;", *str ) == NULL )
str++;
return (*str == ';') ? (str + 1) : NULL;
}
/** Non-aggregate RTSP callback */
/*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_init[21];
const char *psz_session;
const char *psz_cseq;
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;
answer->i_body = 0;
answer->p_body = NULL;
/* Create new session ID if needed */
psz_session = httpd_MsgGet( query, "Session" );
if( psz_session == NULL )
{
/* FIXME: should be somewhat secure randomness */
snprintf( psz_session_init, sizeof(psz_session_init), I64Fd,
NTPtime64() + rand() );
}
if( httpd_MsgGet( query, "Require" ) != NULL )
{
answer->i_status = 551;
httpd_MsgAdd( query, "Unsupported", "%s",
httpd_MsgGet( query, "Require" ) );
}
else
switch( query->i_type )
{
case HTTPD_MSG_SETUP:
{
answer->i_status = 461;
for( const char *tpt = httpd_MsgGet( query, "Transport" );
tpt != NULL;
tpt = transport_next( tpt ) )
{
vlc_bool_t b_multicast = VLC_TRUE, b_unsupp = VLC_FALSE;
unsigned loport = 5004, hiport = 5005; /* from RFC3551 */
/* Check transport protocol. */
/* Currently, we only support RTP/AVP over UDP */
if( strncmp( tpt, "RTP/AVP", 7 ) )
continue;
tpt += 7;
if( strncmp( tpt, "/UDP", 4 ) == 0 )
tpt += 4;
if( strchr( ";,", *tpt ) == NULL )
continue;
/* Parse transport options */
for( const char *opt = parameter_next( tpt );
opt != NULL;
opt = parameter_next( opt ) )
{
if( strncmp( opt, "multicast", 9 ) == 0)
b_multicast = VLC_TRUE;
else
if( strncmp( opt, "unicast", 7 ) == 0 )
b_multicast = VLC_FALSE;
else
if( sscanf( opt, "client_port=%u-%u", &loport, &hiport ) == 2 )
;
else
if( strncmp( opt, "mode=", 5 ) == 0 )
{
if( strncasecmp( opt + 5, "play", 4 )
&& strncasecmp( opt + 5, "\"PLAY\"", 6 ) )
{
/* Not playing?! */
b_unsupp = VLC_TRUE;
break;
}
}
else
{
/*
* Every other option is unsupported:
*
* "source" and "append" are invalid.
*
* For multicast, "port", "layers", "ttl" are set by the
* stream output configuration.
*
* For unicast, we do not allow "destination" as it
* carries a DoS risk, and we decide on "server_port".
*
* "interleaved" and "ssrc" are not implemented.
*/
b_unsupp = VLC_TRUE;
break;
}
}
if( b_unsupp )
continue;
if( b_multicast )
{
if( id->psz_destination == NULL )
continue;
answer->i_status = 200;
httpd_MsgAdd( answer, "Transport",
"RTP/AVP/UDP;destination=%s;port=%d-%d;"
"ttl=%d;mode=play",
id->psz_destination, id->i_port, id->i_port+1,
( p_sys->i_ttl > 0 ) ? p_sys->i_ttl : 1 );
}
else
{
char ip[NI_MAXNUMERICHOST], psz_access[22],
url[NI_MAXNUMERICHOST + 8];
sout_access_out_t *p_access;
rtsp_client_t *rtsp = NULL;
if( ( hiport - loport ) > 1 )
continue;
if( psz_session == NULL )
{
psz_session = psz_session_init;
rtsp = RtspClientNew( p_stream, psz_session );
}
else
{
/* FIXME: we probably need to remove an access out,
* if there is already one for the same ID */
rtsp = RtspClientGet( p_stream, psz_session );
if( rtsp == NULL )
{
answer->i_status = 454;
continue;
}
}
if( httpd_ClientIP( cl, ip ) == NULL )
{
answer->i_status = 500;
continue;
}
if( p_sys->i_ttl )
snprintf( psz_access, sizeof( psz_access ),
"udp{raw,rtcp,ttl=%d}", p_sys->i_ttl );
else
strcpy( psz_access, "udp{raw,rtcp}" );
snprintf( url, sizeof( url ),
( strchr( ip, ':' ) != NULL ) ? "[%s]:%d" : "%s:%d",
ip, loport );
p_access = sout_AccessOutNew( p_stream->p_sout,
psz_access, url );
if( p_access == NULL )
{
msg_Err( p_stream,
"cannot create access output for %s://%s",
psz_access, url );
answer->i_status = 500;
break;
}
TAB_APPEND( rtsp->i_id, rtsp->id, id );
TAB_APPEND( rtsp->i_access, rtsp->access, p_access );
char *src = var_GetNonEmptyString (p_access, "src-addr");
int sport = var_GetInteger (p_access, "src-port");
httpd_ServerIP( cl, ip );
if( ( src != NULL ) && strcmp( src, ip ) )
{
/* Specify source IP if it is different from the RTSP
* control connection server address */
char *ptr = strchr( src, '%' );
if( ptr != NULL ) *ptr = '\0'; /* remove scope ID */
httpd_MsgAdd( answer, "Transport",
"RTP/AVP/UDP;unicast;source=%s;"
"client_port=%u-%u;server_port=%u-%u;"
"mode=play",
src, loport, hiport, sport, sport + 1 );
}
else
{
httpd_MsgAdd( answer, "Transport",
"RTP/AVP/UDP;unicast;"
"client_port=%u-%u;server_port=%u-%u;"
"mode=play",
loport, hiport, sport, sport + 1 );
}
answer->i_status = 200;
free( src );
}
break;
}
break;
}
default:
answer->i_status = 460;
break;
}
psz_cseq = httpd_MsgGet( query, "Cseq" );
if( psz_cseq )
httpd_MsgAdd( answer, "Cseq", "%s", psz_cseq );
httpd_MsgAdd( answer, "Server", "%s", PACKAGE_STRING );
httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
if( psz_session )
httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
return VLC_SUCCESS;
}
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