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vlc/modules/misc/rtsp.c

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/*****************************************************************************
* rtsp.c: rtsp VoD server module
*****************************************************************************
* Copyright (C) 2003-2004 the VideoLAN team
* $Id$
*
* 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." \
"\n Syntax is address:port/path. Default is to bind to localhost address "\
"on port 554, with no path. Use 0.0.0.0 to bind to all addresses." )
vlc_module_begin();
set_shortname( _("RTSP VoD" ) );
set_description( _("RTSP VoD server") );
set_category( CAT_SOUT );
set_subcategory( SUBCAT_SOUT_VOD );
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 media_es_t media_es_t;
typedef struct
{
media_es_t *p_media_es;
char *psz_ip;
int i_port;
} rtsp_client_es_t;
typedef struct
{
char *psz_session;
int64_t i_last; /* for timeout */
vlc_bool_t b_playing; /* is it in "play" state */
vlc_bool_t b_paused; /* is it in "pause" state */
int i_es;
rtsp_client_es_t **es;
} rtsp_client_t;
struct media_es_t
{
/* VoD server */
vod_t *p_vod;
/* RTSP server */
httpd_url_t *p_rtsp_url;
vod_media_t *p_media;
es_format_t fmt;
int i_port;
uint8_t i_payload_type;
char *psz_rtpmap;
char *psz_fmtp;
};
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;
int i_payload_type;
int64_t i_sdp_id;
int i_sdp_version;
vlc_bool_t b_multicast;
vlc_mutex_t lock;
/* ES list */
int i_es;
media_es_t **es;
char *psz_mux;
/* RTSP client */
int i_rtsp;
rtsp_client_t **rtsp;
/* Infos */
char *psz_session_name;
char *psz_session_description;
char *psz_session_url;
char *psz_session_email;
mtime_t i_length;
};
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 *, char *, input_item_t * );
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 RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
httpd_message_t *, httpd_message_t * );
static char *SDPGenerate( vod_media_t *, char * );
static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
{
static const char hex[16] = "0123456789abcdef";
int i;
for( i = 0; i < i_data; i++ )
{
s[2*i+0] = hex[(p_data[i]>>4)&0xf];
s[2*i+1] = hex[(p_data[i] )&0xf];
}
s[2*i_data] = '\0';
}
/*****************************************************************************
* 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, char *psz_name,
input_item_t *p_item )
{
vod_sys_t *p_sys = p_vod->p_sys;
vod_media_t *p_media = malloc( sizeof(vod_media_t) );
int i;
memset( p_media, 0, sizeof(vod_media_t) );
p_media->es = 0;
p_media->psz_mux = 0;
p_media->rtsp = 0;
asprintf( &p_media->psz_rtsp_path, "%s%s", p_sys->psz_path, psz_name );
p_media->p_rtsp_url =
httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
NULL, NULL );
if( !p_media->p_rtsp_url )
{
msg_Err( p_vod, "cannot create http url (%s)", p_media->psz_rtsp_path);
free( p_media->psz_rtsp_path );
free( p_media );
return 0;
}
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 );
vlc_mutex_init( p_vod, &p_media->lock );
p_media->psz_session_name = strdup("");
p_media->psz_session_description = strdup("");
p_media->psz_session_url = strdup("");
p_media->psz_session_email = strdup("");
p_media->i_port_audio = 1234;
p_media->i_port_video = 1236;
p_media->i_port = 1238;
p_media->i_payload_type = 96;
p_media->i_sdp_id = mdate();
p_media->i_sdp_version = 1;
p_media->i_length = p_item->i_duration;
vlc_mutex_lock( &p_item->lock );
msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
for( i = 0; i < p_item->i_es; i++ )
{
MediaAddES( p_vod, p_media, p_item->es[i] );
}
vlc_mutex_unlock( &p_item->lock );
return p_media;
}
static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
{
vod_sys_t *p_sys = p_vod->p_sys;
msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
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 );
while( p_media->i_es ) MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
vlc_mutex_destroy( &p_media->lock );
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) );
char *psz_urlc;
memset( p_es, 0, sizeof(media_es_t) );
p_media->psz_mux = NULL;
/* TODO: update SDP, etc... */
asprintf( &psz_urlc, "%s/trackid=%d",
p_media->psz_rtsp_path, p_media->i_es );
msg_Dbg( p_vod, " - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
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 )
{
p_es->i_payload_type = 11;
}
else if( p_fmt->audio.i_channels == 2 && p_fmt->audio.i_rate == 44100 )
{
p_es->i_payload_type = 10;
}
else
{
p_es->i_payload_type = p_media->i_payload_type++;
}
p_es->psz_rtpmap = malloc( strlen( "L16/*/*" ) + 20+1 );
sprintf( p_es->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
p_fmt->audio.i_channels );
break;
case VLC_FOURCC( 'u', '8', ' ', ' ' ):
p_es->i_payload_type = p_media->i_payload_type++;
p_es->psz_rtpmap = malloc( strlen( "L8/*/*" ) + 20+1 );
sprintf( p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
p_fmt->audio.i_channels );
break;
case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
p_es->i_payload_type = 14;
p_es->psz_rtpmap = strdup( "MPA/90000" );
break;
case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
p_es->i_payload_type = 32;
p_es->psz_rtpmap = strdup( "MPV/90000" );
break;
case VLC_FOURCC( 'a', '5', '2', ' ' ):
p_es->i_payload_type = p_media->i_payload_type++;
p_es->psz_rtpmap = strdup( "ac3/90000" );
break;
case VLC_FOURCC( 'H', '2', '6', '3' ):
p_es->i_payload_type = p_media->i_payload_type++;
p_es->psz_rtpmap = strdup( "H263-1998/90000" );
break;
case VLC_FOURCC( 'm', 'p', '4', 'v' ):
p_es->i_payload_type = p_media->i_payload_type++;
p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
if( p_fmt->i_extra > 0 )
{
char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
p_es->psz_fmtp = malloc( 100 + 2 * p_fmt->i_extra );
sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
sprintf( p_es->psz_fmtp,
"profile-level-id=3; config=%s;", p_hexa );
free( p_hexa );
}
break;
case VLC_FOURCC( 'm', 'p', '4', 'a' ):
p_es->i_payload_type = p_media->i_payload_type++;
p_es->psz_rtpmap = malloc( strlen( "mpeg4-generic/" ) + 12 );
sprintf( p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate );
if( p_fmt->i_extra > 0 )
{
char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
p_es->psz_fmtp = malloc( 200 + 2 * p_fmt->i_extra );
sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
sprintf( p_es->psz_fmtp,
"streamtype=5; profile-level-id=15; mode=AAC-hbr; "
"config=%s; SizeLength=13;IndexLength=3; "
"IndexDeltaLength=3; Profile=1;", p_hexa );
free( p_hexa );
}
break;
case VLC_FOURCC( 'm', 'p', '2', 't' ):
p_media->psz_mux = "ts";
p_es->i_payload_type = 33;
p_es->psz_rtpmap = strdup( "MP2T/90000" );
break;
case VLC_FOURCC( 'm', 'p', '2', 'p' ):
p_media->psz_mux = "ps";
p_es->i_payload_type = p_media->i_payload_type++;
p_es->psz_rtpmap = strdup( "MP2P/90000" );
break;
case VLC_FOURCC( 's', 'a', 'm', 'r' ):
p_es->i_payload_type = p_media->i_payload_type++;
p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
"AMR/8000/2" : "AMR/8000" );
p_es->psz_fmtp = strdup( "octet-align=1" );
break;
case VLC_FOURCC( 's', 'a', 'w', 'b' ):
p_es->i_payload_type = p_media->i_payload_type++;
p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
"AMR-WB/16000/2" : "AMR-WB/16000" );
p_es->psz_fmtp = strdup( "octet-align=1" );
break;
default:
msg_Err( p_vod, "cannot add this stream (unsupported "
"codec: %4.4s)", (char*)&p_fmt->i_codec );
free( p_es );
return VLC_EGENERIC;
}
p_es->p_rtsp_url =
httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
NULL );
if( !p_es->p_rtsp_url )
{
msg_Err( p_vod, "cannot create http url (%s)", psz_urlc );
free( psz_urlc );
free( p_es );
return VLC_EGENERIC;
}
free( psz_urlc );
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
RtspCallbackES, (void*)p_es );
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
RtspCallbackES, (void*)p_es );
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
RtspCallbackES, (void*)p_es );
httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
RtspCallbackES, (void*)p_es );
es_format_Copy( &p_es->fmt, p_fmt );
p_es->p_vod = p_vod;
p_es->p_media = p_media;
#if 0
/* Choose the port */
if( p_fmt->i_cat == AUDIO_ES && p_media->i_port_audio > 0 )
{
p_es->i_port = p_media->i_port_audio;
p_media->i_port_audio = 0;
}
else if( p_fmt->i_cat == VIDEO_ES && p_media->i_port_video > 0 )
{
p_es->i_port = p_media->i_port_video;
p_media->i_port_video = 0;
}
while( !p_es->i_port )
{
if( p_media->i_port != p_media->i_port_audio &&
p_media->i_port != p_media->i_port_video )
{
p_es->i_port = p_media->i_port;
p_media->i_port += 2;
break;
}
p_media->i_port += 2;
}
#else
p_es->i_port = 0;
#endif
vlc_mutex_lock( &p_media->lock );
TAB_APPEND( p_media->i_es, p_media->es, p_es );
vlc_mutex_unlock( &p_media->lock );
p_media->i_sdp_version++;
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;
int i;
/* Find the ES */
for( i = 0; i < p_media->i_es; i++ )
{
if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
p_media->es[i]->fmt.i_id == p_fmt->i_id )
{
p_es = p_media->es[i];
}
}
if( !p_es ) return;
msg_Dbg( p_vod, " - Removing ES %4.4s", (char *)&p_fmt->i_codec );
vlc_mutex_lock( &p_media->lock );
TAB_REMOVE( p_media->i_es, p_media->es, p_es );
vlc_mutex_unlock( &p_media->lock );
if( p_es->psz_rtpmap ) free( p_es->psz_rtpmap );
if( p_es->psz_fmtp ) free( p_es->psz_fmtp );
p_media->i_sdp_version++;
if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
es_format_Clean( &p_es->fmt );
}
/****************************************************************************
* RTSP server implementation
****************************************************************************/
static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
{
rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
memset( p_rtsp, 0, sizeof(rtsp_client_t) );
p_rtsp->es = 0;
p_rtsp->psz_session = psz_session;
TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
msg_Dbg( p_media->p_vod, "new session: %s", psz_session );
return p_rtsp;
}
static rtsp_client_t *RtspClientGet( vod_media_t *p_media, char *psz_session )
{
int i;
for( i = 0; psz_session && 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 *p_rtsp )
{
msg_Dbg( p_media->p_vod, "closing session: %s", p_rtsp->psz_session );
while( p_rtsp->i_es-- )
{
if( p_rtsp->es[p_rtsp->i_es]->psz_ip )
free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
free( p_rtsp->es[p_rtsp->i_es] );
if( !p_rtsp->i_es ) free( p_rtsp->es );
}
TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
free( p_rtsp->psz_session );
free( p_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;
rtsp_client_t *p_rtsp;
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 = (uint8_t *)psz_sdp;
answer->i_body = strlen( psz_sdp );
break;
}
case HTTPD_MSG_PLAY:
{
char *psz_output, *ip;
int i, i_port_audio = 0, i_port_video = 0;
/* 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 );
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp ) break;
if( p_rtsp->b_playing && p_rtsp->b_paused )
{
vod_MediaControl( p_vod, p_media, psz_session,
VOD_MEDIA_PAUSE );
p_rtsp->b_paused = VLC_FALSE;
break;
}
else if( p_rtsp->b_playing ) break;
if( !(ip = httpd_ClientIP( cl )) ) break;
p_rtsp->b_playing = VLC_TRUE;
/* FIXME for != 1 video and 1 audio */
for( i = 0; i < p_rtsp->i_es; i++ )
{
if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
i_port_audio = p_rtsp->es[i]->i_port;
if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
i_port_video = p_rtsp->es[i]->i_port;
}
if( p_media->psz_mux )
{
asprintf( &psz_output, "rtp{dst=%s,port=%i,mux=%s}",
ip, i_port_video, p_media->psz_mux );
}
else
{
asprintf( &psz_output, "rtp{dst=%s,port-video=%i,"
"port-audio=%i}", ip, i_port_video, i_port_audio );
}
vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PLAY,
psz_output );
free( psz_output );
free( ip );
break;
}
case HTTPD_MSG_PAUSE:
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp ) break;
vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PAUSE );
p_rtsp->b_paused = VLC_TRUE;
answer->i_status = 200;
answer->psz_status = strdup( "OK" );
answer->i_body = 0;
answer->p_body = NULL;
break;
case HTTPD_MSG_TEARDOWN:
/* 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);
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp ) break;
vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_STOP );
RtspClientDel( p_media, p_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 RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
httpd_message_t *answer, httpd_message_t *query )
{
media_es_t *p_es = (media_es_t*)p_args;
vod_media_t *p_media = p_es->p_media;
vod_t *p_vod = p_media->p_vod;
rtsp_client_t *p_rtsp = NULL;
char *psz_session = NULL;
char *psz_transport = NULL;
char *psz_position = NULL;
int i;
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 )
{
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 *p_rtsp;
rtsp_client_es_t *p_rtsp_es;
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 )
{
asprintf( &psz_session, "%d", rand() );
p_rtsp = RtspClientNew( p_media, psz_session );
}
else
{
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_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;
}
}
p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
p_rtsp_es->i_port = i_port;
p_rtsp_es->psz_ip = strdup( ip );
p_rtsp_es->p_media_es = p_es;
TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
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;
case HTTPD_MSG_TEARDOWN:
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);
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp ) break;
for( i = 0; i < p_rtsp->i_es; i++ )
{
if( p_rtsp->es[i]->p_media_es == p_es )
{
if( p_rtsp->es[i]->psz_ip ) free( p_rtsp->es[i]->psz_ip );
TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
break;
}
}
if( !p_rtsp->i_es )
{
vod_MediaControl( p_vod, p_media, psz_session,
VOD_MEDIA_STOP );
RtspClientDel( p_media, p_rtsp );
}
break;
case HTTPD_MSG_PLAY:
/* This is kind of a kludge. Should we only support Aggregate
* Operations ? */
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
p_rtsp = RtspClientGet( p_media, psz_session );
psz_position = httpd_MsgGet( query, "Range" );
if( psz_position ) psz_position = strstr( psz_position, "npt=" );
if( psz_position )
{
float f_pos;
msg_Dbg( p_vod, "seeking request: %s", psz_position );
psz_position += 4;
if( sscanf( psz_position, "%f", &f_pos ) == 1 )
{
f_pos /= ((float)(p_media->i_length/1000))/1000 / 100;
vod_MediaControl( p_vod, p_media, psz_session,
VOD_MEDIA_SEEK, (double)f_pos );
}
}
answer->i_status = 200;
answer->psz_status = strdup( "OK" );
answer->i_body = 0;
answer->p_body = NULL;
break;
case HTTPD_MSG_PAUSE:
/* This is kind of a kludge. Should we only support Aggregate
* Operations ? */
psz_session = httpd_MsgGet( query, "Session" );
msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
p_rtsp = RtspClientGet( p_media, psz_session );
if( !p_rtsp ) break;
vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PAUSE );
p_rtsp->b_paused = VLC_TRUE;
answer->i_status = 200;
answer->psz_status = strdup( "OK" );
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 )
{
int i, i_size;
char *p, *psz_sdp;
/* Calculate size */
i_size = strlen( "v=0\r\n" ) +
strlen( "o=- * * IN IP4 127.0.0.1\r\n" ) + 10 + 10 +
strlen( "s=*\r\n" ) + strlen( p_media->psz_session_name ) +
strlen( "i=*\r\n" ) + strlen( p_media->psz_session_description ) +
strlen( "u=*\r\n" ) + strlen( p_media->psz_session_url ) +
strlen( "e=*\r\n" ) + strlen( p_media->psz_session_email ) +
strlen( "t=0 0\r\n" ) + /* FIXME */
strlen( "a=tool:"PACKAGE_STRING"\r\n" ) +
strlen( "c=IN IP4 */*\r\n" ) + 20 + 10 +
strlen( psz_destination ? psz_destination : "0.0.0.0" ) +
strlen( "a=range:npt=0-1000000000.000\r\n" );
for( i = 0; i < p_media->i_es; i++ )
{
media_es_t *p_es = p_media->es[i];
i_size += strlen( "m=**d*o * RTP/AVP *\r\n" ) + 10 + 10;
if( p_es->psz_rtpmap )
{
i_size += strlen( "a=rtpmap:* *\r\n" ) +
strlen( p_es->psz_rtpmap ) + 10;
}
if( p_es->psz_fmtp )
{
i_size += strlen( "a=fmtp:* *\r\n" ) +
strlen( p_es->psz_fmtp ) + 10;
}
i_size += strlen( "a=control:*/trackid=*\r\n" ) +
strlen( p_media->psz_rtsp_control ) + 10;
}
p = psz_sdp = malloc( i_size );
p += sprintf( p, "v=0\r\n" );
p += sprintf( p, "o=- "I64Fd" %d IN IP4 127.0.0.1\r\n",
p_media->i_sdp_id, p_media->i_sdp_version );
if( *p_media->psz_session_name )
p += sprintf( p, "s=%s\r\n", p_media->psz_session_name );
if( *p_media->psz_session_description )
p += sprintf( p, "i=%s\r\n", p_media->psz_session_description );
if( *p_media->psz_session_url )
p += sprintf( p, "u=%s\r\n", p_media->psz_session_url );
if( *p_media->psz_session_email )
p += sprintf( p, "e=%s\r\n", p_media->psz_session_email );
p += sprintf( p, "t=0 0\r\n" ); /* FIXME */
p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
p += sprintf( p, "c=IN IP4 %s/%d\r\n", psz_destination ?
psz_destination : "0.0.0.0", p_media->i_ttl );
if( p_media->i_length > 0 )
p += sprintf( p, "a=range:npt=0-%.3f\r\n",
((float)(p_media->i_length/1000))/1000 );
for( i = 0; i < p_media->i_es; i++ )
{
media_es_t *p_es = p_media->es[i];
if( p_es->fmt.i_cat == AUDIO_ES )
{
p += sprintf( p, "m=audio %d RTP/AVP %d\r\n",
p_es->i_port, p_es->i_payload_type );
}
else if( p_es->fmt.i_cat == VIDEO_ES )
{
p += sprintf( p, "m=video %d RTP/AVP %d\r\n",
p_es->i_port, p_es->i_payload_type );
}
else
{
continue;
}
if( p_es->psz_rtpmap )
{
p += sprintf( p, "a=rtpmap:%d %s\r\n", p_es->i_payload_type,
p_es->psz_rtpmap );
}
if( p_es->psz_fmtp )
{
p += sprintf( p, "a=fmtp:%d %s\r\n", p_es->i_payload_type,
p_es->psz_fmtp );
}
p += sprintf( p, "a=control:%s/trackid=%d\r\n",
p_media->psz_rtsp_control, i );
}
fprintf( stderr, psz_sdp );
return psz_sdp;
}