--- /dev/null
+/*****************************************************************************
+ * 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( "" );
+}
projects / vlc / commitdiff