Commit 613e970f authored by Gildas Bazin's avatar Gildas Bazin

* include/vlc_vod.h, modules/misc/rtsp.c: skeleton for a "vod server" RTSP module.

parent a04be50a
......@@ -113,6 +113,7 @@ HEADERS_include = \
include/vlc_threads.h \
include/vlc_video.h \
include/vlc_vlm.h \
include/vlc_vod.h \
include/vout_synchro.h \
include/win32_specific.h \
$(NULL)
......
......@@ -69,7 +69,7 @@ typedef struct
*****************************************************************************/
static inline void vlc_UrlParse( vlc_url_t *url, char *psz_url, char option )
{
char *psz_dup = strdup( psz_url );
char *psz_dup = psz_url ? strdup( psz_url ) : 0;
char *psz_parse = psz_dup;
char *p;
......@@ -79,6 +79,8 @@ static inline void vlc_UrlParse( vlc_url_t *url, char *psz_url, char option )
url->psz_path = NULL;
url->psz_option = NULL;
if( !psz_url ) return;
if( ( p = strstr( psz_parse, ":/" ) ) )
{
/* we have a protocol */
......
......@@ -354,6 +354,10 @@ typedef int (*httpd_file_callback_t)( httpd_file_sys_t*, httpd_file_t *, uint8_t
typedef struct httpd_redirect_t httpd_redirect_t;
typedef struct httpd_stream_t httpd_stream_t;
/* vod server */
typedef struct vod_t vod_t;
typedef struct vod_sys_t vod_sys_t;
/* opengl */
typedef struct opengl_t opengl_t;
typedef struct opengl_sys_t opengl_sys_t;
......
/*****************************************************************************
* vlc_vod.h: interface for VoD server modules
*****************************************************************************
* Copyright (C) 2000, 2001 VideoLAN
* $Id$
*
* Author: Gildas Bazin <gbazin@videolan.org>
*
* 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.
*****************************************************************************/
#ifndef _VLC_VOD_H
#define _VLC_VOD_H 1
typedef struct vod_media_t vod_media_t;
struct vod_t
{
VLC_COMMON_MEMBERS
/* Module properties */
module_t *p_module;
vod_sys_t *p_sys;
vod_media_t * (*pf_media_new) ( vod_t *, void * );
void (*pf_media_del) ( vod_t *, vod_media_t * );
int (*pf_media_add_es)( vod_t *, vod_media_t *, es_format_t * );
void (*pf_media_del_es)( vod_t *, vod_media_t *, es_format_t * );
};
#endif
......@@ -7,4 +7,5 @@ SOURCES_screensaver = screensaver.c
SOURCES_qte_main = qte_main.cpp
SOURCES_freetype = freetype.c
SOURCES_logger = logger.c
SOURCES_vod_rtsp = rtsp.c
SOURCES_svg = svg.c
/*****************************************************************************
* rtsp.c: rtsp VoD server module
*****************************************************************************
* Copyright (C) 2003-2004 VideoLAN
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Gildas Bazin <gbazin@videolan.org>
*
* 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 "vlc_vod.h"
#include "network.h"
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
#define HOST_TEXT N_( "Host address" )
#define HOST_LONGTEXT N_( \
"You can set the address, port and path the rtsp interface will bind to." )
vlc_module_begin();
set_description( _("RTSP VoD server") );
set_capability( "vod server", 1 );
set_callbacks( Open, Close );
add_shortcut( "rtsp" );
add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, VLC_TRUE );
vlc_module_end();
/*****************************************************************************
* Exported prototypes
*****************************************************************************/
typedef struct
{
char *psz_session;
int64_t i_last; /* for timeout */
vlc_bool_t b_playing; /* is it in "play" state */
} rtsp_client_t;
typedef struct
{
/* VoD server */
vod_t *p_vod;
/* RTSP server */
httpd_url_t *p_rtsp_url;
vod_media_t *p_media;
} media_es_t;
struct vod_media_t
{
/* VoD server */
vod_t *p_vod;
/* RTSP server */
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;
/* ES list */
int i_es;
media_es_t **es;
/* RTSP client */
int i_rtsp;
rtsp_client_t **rtsp;
};
struct vod_sys_t
{
/* RTSP server */
httpd_host_t *p_rtsp_host;
char *psz_host;
char *psz_path;
int i_port;
/* List of media */
int i_media;
vod_media_t **media;
};
static vod_media_t *MediaNew( vod_t *, void *needsomethingthere );
static void MediaDel( vod_t *, vod_media_t * );
static int MediaAddES( vod_t *, vod_media_t *, es_format_t * );
static void MediaDelES( vod_t *, vod_media_t *, es_format_t * );
static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
static rtsp_client_t *RtspClientGet( vod_media_t *, char * );
static void RtspClientDel( vod_media_t *, rtsp_client_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 char *SDPGenerate( vod_media_t *, char * );
/*****************************************************************************
* Open: Starts the RTSP server module
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
vod_t *p_vod = (vod_t *)p_this;
vod_sys_t *p_sys = 0;
char *psz_url = 0;
vlc_url_t url;
psz_url = config_GetPsz( p_vod, "rtsp-host" );
vlc_UrlParse( &url, psz_url, 0 );
if( psz_url ) free( psz_url );
if( !url.psz_host || !*url.psz_host )
{
if( url.psz_host ) free( url.psz_host );
url.psz_host = strdup( "localhost" );
}
if( url.i_port <= 0 ) url.i_port = 554;
p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
if( !p_sys ) goto error;
p_sys->p_rtsp_host = 0;
p_sys->p_rtsp_host =
httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
if( !p_sys->p_rtsp_host )
{
msg_Err( p_vod, "cannot create http server (%s:%i)",
url.psz_host, url.i_port );
goto error;
}
p_sys->psz_host = strdup( url.psz_host );
p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
p_sys->i_port = url.i_port;
vlc_UrlClean( &url );
p_sys->media = 0;
p_sys->i_media = 0;
p_vod->pf_media_new = MediaNew;
p_vod->pf_media_del = MediaDel;
p_vod->pf_media_add_es = MediaAddES;
p_vod->pf_media_del_es = MediaDelES;
return VLC_SUCCESS;
error:
if( p_sys && p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
if( p_sys ) free( p_sys );
vlc_UrlClean( &url );
return VLC_EGENERIC;
}
/*****************************************************************************
* Close:
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
vod_t *p_vod = (vod_t *)p_this;
vod_sys_t *p_sys = p_vod->p_sys;
httpd_HostDelete( p_sys->p_rtsp_host );
/* TODO delete medias */
free( p_sys );
}
/*****************************************************************************
* Media handling
*****************************************************************************/
static vod_media_t *MediaNew( vod_t *p_vod, void *needsomethinghere )
{
vod_sys_t *p_sys = p_vod->p_sys;
vod_media_t *p_media = malloc( sizeof(vod_media_t) );
memset( p_media, 0, sizeof(vod_media_t) );
asprintf( &p_media->psz_rtsp_path, "%s%i", p_sys->psz_path,
p_sys->i_media );
p_media->p_rtsp_url =
httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, 0, 0 );
if( !p_media->p_rtsp_url )
{
msg_Err( p_vod, "cannot create http url" );
free( p_media->psz_rtsp_path );
free( p_media );
}
msg_Dbg( p_vod, "created rtsp url: %s", p_media->psz_rtsp_path );
asprintf( &p_media->psz_rtsp_control, "rtsp://%s:%d%s",
p_sys->psz_host, p_sys->i_port, p_media->psz_rtsp_path );
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
RtspCallback, (void*)p_media );
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
RtspCallback, (void*)p_media );
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
RtspCallback, (void*)p_media );
httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
RtspCallback, (void*)p_media );
p_media->p_vod = p_vod;
TAB_APPEND( p_sys->i_media, p_sys->media, p_media );
return p_media;
}
static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
{
vod_sys_t *p_sys = p_vod->p_sys;
while( p_media->i_rtsp > 0 ) RtspClientDel( p_media, p_media->rtsp[0] );
httpd_UrlDelete( p_media->p_rtsp_url );
if( p_media->psz_rtsp_path ) free( p_media->psz_rtsp_path );
if( p_media->psz_rtsp_control ) free( p_media->psz_rtsp_control );
TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
free( p_media );
}
static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
{
media_es_t *p_es = malloc( sizeof(media_es_t) );
memset( p_es, 0, sizeof(media_es_t) );
TAB_APPEND( p_media->i_es, p_media->es, p_es );
/* TODO: update SDP, etc... */
if( p_media->p_rtsp_url )
{
char psz_urlc[strlen( p_media->psz_rtsp_control ) + 1 + 10];
sprintf( psz_urlc, "%s/trackid=%d",
p_media->psz_rtsp_path, p_media->i_es );
fprintf( stderr, "rtsp: adding %s\n", psz_urlc );
p_es->p_rtsp_url =
httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, 0, 0 );
if( p_es->p_rtsp_url )
{
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
RtspCallbackId, (void*)p_es );
#if 0
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
RtspCallback, (void*)p_es );
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
RtspCallback, (void*)p_es );
#endif
}
}
p_es->p_vod = p_vod;
p_es->p_media = p_media;
return VLC_SUCCESS;
}
static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
{
media_es_t *p_es = 0;
TAB_REMOVE( p_media->i_es, p_media->es, p_es );
/* TODO do something useful */
if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
}
/****************************************************************************
* RTSP server implementation
****************************************************************************/
static rtsp_client_t *RtspClientNew( vod_media_t *p_media, 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;
TAB_APPEND( p_media->i_rtsp, p_media->rtsp, rtsp );
msg_Dbg( p_media->p_vod, "new session: %s", psz_session );
return rtsp;
}
static rtsp_client_t *RtspClientGet( vod_media_t *p_media, char *psz_session )
{
int i;
for( i = 0; i < p_media->i_rtsp; i++ )
{
if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
{
return p_media->rtsp[i];
}
}
return NULL;
}
static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *rtsp )
{
msg_Dbg( p_media->p_vod, "closing session: %s", rtsp->psz_session );
TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, rtsp );
free( rtsp->psz_session );
free( rtsp );
}
static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
httpd_message_t *answer, httpd_message_t *query )
{
vod_media_t *p_media = (vod_media_t*)p_args;
vod_t *p_vod = p_media->p_vod;
char *psz_destination = p_media->psz_destination;
char *psz_session = 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;
switch( query->i_type )
{
case HTTPD_MSG_DESCRIBE:
{
char *psz_sdp =
SDPGenerate( p_media, psz_destination ?
psz_destination : "0.0.0.0" );
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" );
msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
rtsp = RtspClientGet( p_media, psz_session );
if( rtsp && !rtsp->b_playing )
{
rtsp->b_playing = VLC_TRUE;
/* TODO: do something useful */
}
break;
}
case HTTPD_MSG_PAUSE:
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
/* TODO: do something useful */
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" );
msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
rtsp = RtspClientGet( p_media, psz_session );
if( rtsp )
{
/* TODO: do something useful */
RtspClientDel( p_media, 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 )
{
vod_media_t *p_media = (vod_media_t*)p_args;
vod_t *p_vod = p_media->p_vod;
char *psz_session = NULL;
char *psz_transport = 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;
switch( query->i_type )
{
case HTTPD_MSG_SETUP:
psz_transport = httpd_MsgGet( query, "Transport" );
fprintf( stderr, "HTTPD_MSG_SETUP: transport=%s\n", psz_transport );
if( strstr( psz_transport, "multicast" ) && p_media->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 )
{
if( psz_session ) free( psz_session );
asprintf( &psz_session, "%d", rand() );
}
httpd_MsgAdd( answer, "Transport",
"RTP/AVP/UDP;destination=%s;port=%d-%d;ttl=%d",
p_media->psz_destination, p_media->i_port,
p_media->i_port+1, p_media->i_ttl );
}
else if( strstr( psz_transport, "unicast" ) &&
strstr( psz_transport, "client_port=" ) )
{
rtsp_client_t *rtsp = NULL;
char *ip = httpd_ClientIP( cl );
int i_port = atoi( strstr( psz_transport, "client_port=" ) +
strlen("client_port=") );
if( !ip )
{
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=%d\n",
ip, i_port );
psz_session = httpd_MsgGet( query, "Session" );
if( !psz_session || !*psz_session )
{
if( psz_session ) free( psz_session );
asprintf( &psz_session, "%d", rand() );
rtsp = RtspClientNew( p_media, psz_session );
}
else
{
rtsp = RtspClientGet( p_media, psz_session );
if( !rtsp )
{
/* 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;
}
}
/* TODO: do something useful */
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;
break;
}
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;
}
/*****************************************************************************
* SDPGenerate: TODO
* FIXME: need to be moved to a common place ?
*****************************************************************************/
static char *SDPGenerate( vod_media_t *p_media, char *psz_destination )
{
return strdup( "" );
}
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