rtsp.c 32.4 KB
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/*****************************************************************************
 * 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") );
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    set_category( CAT_SOUT );
    set_subcategory( SUBCAT_SOUT_VOD );
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    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
 *****************************************************************************/

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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;

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typedef struct
{
    char *psz_session;
    int64_t i_last; /* for timeout */

    vlc_bool_t b_playing; /* is it in "play" state */
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    vlc_bool_t b_paused; /* is it in "pause" state */

    int i_es;
    rtsp_client_es_t **es;
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} rtsp_client_t;

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struct media_es_t
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{
    /* VoD server */
    vod_t *p_vod;

    /* RTSP server */
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    httpd_url_t *p_rtsp_url;
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    vod_media_t *p_media;

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    es_format_t fmt;
    int         i_port;
    uint8_t     i_payload_type;
    char        *psz_rtpmap;
    char        *psz_fmtp;

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};
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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;
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    int  i_payload_type;

    int64_t i_sdp_id;
    int     i_sdp_version;

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    vlc_bool_t b_multicast;

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    vlc_mutex_t lock;
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    /* ES list */
    int        i_es;
    media_es_t **es;
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    char       *psz_mux;
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    /* RTSP client */
    int           i_rtsp;
    rtsp_client_t **rtsp;
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    /* Infos */
    char *psz_session_name;
    char *psz_session_description;
    char *psz_session_url;
    char *psz_session_email;
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    mtime_t i_length;
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};

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;
};

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static vod_media_t *MediaNew( vod_t *, char *, input_item_t * );
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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 * );
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static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
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                           httpd_message_t *, httpd_message_t * );

static char *SDPGenerate( vod_media_t *, char * );

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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';
}

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/*****************************************************************************
 * 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
 *****************************************************************************/
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static vod_media_t *MediaNew( vod_t *p_vod, char *psz_name,
                              input_item_t *p_item )
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{
    vod_sys_t *p_sys = p_vod->p_sys;
    vod_media_t *p_media = malloc( sizeof(vod_media_t) );
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    int i;
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    memset( p_media, 0, sizeof(vod_media_t) );
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    p_media->es = 0;
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    p_media->psz_mux = 0;
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    p_media->rtsp = 0;
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    asprintf( &p_media->psz_rtsp_path, "%s%s", p_sys->psz_path, psz_name );
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    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 )
    {
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        msg_Err( p_vod, "cannot create http url (%s)", p_media->psz_rtsp_path);
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        free( p_media->psz_rtsp_path );
        free( p_media );
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        return 0;
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    }

    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 );

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    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;
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    p_media->i_length = p_item->i_duration;
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    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++ )
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    {
        MediaAddES( p_vod, p_media, p_item->es[i] );
    }
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    vlc_mutex_unlock( &p_item->lock );

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    return p_media;
}

static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
{
    vod_sys_t *p_sys = p_vod->p_sys;

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    msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );

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    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 );
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    while( p_media->i_es ) MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );

    vlc_mutex_destroy( &p_media->lock );
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    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) );
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    char *psz_urlc;
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    memset( p_es, 0, sizeof(media_es_t) );
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    p_media->psz_mux = NULL;
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    /* TODO: update SDP, etc... */
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    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 );
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    switch( p_fmt->i_codec )
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    {
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    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++;
        }
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        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 )
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        {
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            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 );
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        }
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        break;
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    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;
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    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, 0, 0 );

    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;
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    }
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    free( psz_urlc );

    httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
                    RtspCallbackES, (void*)p_es );
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    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 );
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    es_format_Copy( &p_es->fmt, p_fmt );
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    p_es->p_vod = p_vod;
    p_es->p_media = p_media;

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#if 0
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    /* 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;
    }
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#else

    p_es->i_port = 0;
#endif
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    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++;

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    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;
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    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;
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    msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );

    vlc_mutex_lock( &p_media->lock );
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    TAB_REMOVE( p_media->i_es, p_media->es, p_es );
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    vlc_mutex_unlock( &p_media->lock );
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    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++;
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    if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
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    es_format_Clean( &p_es->fmt );
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}

/****************************************************************************
 * RTSP server implementation
 ****************************************************************************/
static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
{
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    rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
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    memset( p_rtsp, 0, sizeof(rtsp_client_t) );
    p_rtsp->es = 0;
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    p_rtsp->psz_session = psz_session;
    TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
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    msg_Dbg( p_media->p_vod, "new session: %s", psz_session );

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    return p_rtsp;
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}

static rtsp_client_t *RtspClientGet( vod_media_t *p_media, char *psz_session )
{
    int i;

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    for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
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    {
        if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
        {
            return p_media->rtsp[i];
        }
    }

    return NULL;
}

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static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
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{
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    msg_Dbg( p_media->p_vod, "closing session: %s", p_rtsp->psz_session );
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    while( p_rtsp->i_es-- )
    {
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        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 );
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    }

589
    TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
590

591 592
    free( p_rtsp->psz_session );
    free( p_rtsp );
593 594 595 596 597 598 599 600 601
}

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;
602
    rtsp_client_t *p_rtsp;
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    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:
        {
631 632
            char *psz_output, *ip;
            int i, i_port_audio = 0, i_port_video = 0;
633 634 635 636 637 638 639 640 641 642

            /* 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 );

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            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;

655 656
            if( !(ip = httpd_ClientIP( cl )) ) break;

657
            p_rtsp->b_playing = VLC_TRUE;
658 659

            /* FIXME for != 1 video and 1 audio */
660
            for( i = 0; i < p_rtsp->i_es; i++ )
661
            {
662 663 664 665
                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;
666
            }
667

668 669 670 671 672 673 674 675 676 677 678
            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 );
            }

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            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PLAY,
                              psz_output );
            free( psz_output );
            free( ip );
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            break;
        }

        case HTTPD_MSG_PAUSE:
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
689

690 691 692
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;

693
            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PAUSE );
694
            p_rtsp->b_paused = VLC_TRUE;
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            answer->i_status = 200;
            answer->psz_status = strdup( "OK" );
            answer->i_body = 0;
            answer->p_body = NULL;
            break;
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        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);

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            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;
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            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_STOP );
716
            RtspClientDel( p_media, p_rtsp );
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            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;
}

737
static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
738 739
                           httpd_message_t *answer, httpd_message_t *query )
{
740 741
    media_es_t *p_es = (media_es_t*)p_args;
    vod_media_t *p_media = p_es->p_media;
742
    vod_t *p_vod = p_media->p_vod;
743
    rtsp_client_t *p_rtsp = NULL;
744 745
    char *psz_session = NULL;
    char *psz_transport = NULL;
746
    char *psz_position = NULL;
747
    int i;
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    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=" ) )
        {
785 786
            rtsp_client_t *p_rtsp;
            rtsp_client_es_t *p_rtsp_es;
787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806
            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() );
807
                p_rtsp = RtspClientNew( p_media, psz_session );
808 809 810
            }
            else
            {
811 812
                p_rtsp = RtspClientGet( p_media, psz_session );
                if( !p_rtsp )
813 814 815 816 817 818 819 820 821 822 823
                {
                    /* 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;
                }
            }

824 825 826 827 828
            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 );
829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846

            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;

847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877
        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:
878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905
            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 = 460;
            answer->psz_status = strdup( "Only Aggregate Operation Allowed" );
            answer->i_body = 0;
            answer->p_body = NULL;
            break;

906
        case HTTPD_MSG_PAUSE:
907 908 909
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );

910 911 912 913 914 915
            answer->i_status = 460;
            answer->psz_status = strdup( "Only Aggregate Operation Allowed" );
            answer->i_body = 0;
            answer->p_body = NULL;
            break;

916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940
        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 )
{
941 942 943 944 945 946 947 948 949 950 951 952 953
    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 +
954 955
        strlen( psz_destination ? psz_destination : "0.0.0.0" ) +
        strlen( "a=range:npt=0-1000000000.000\r\n" );
956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995

    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 );

996 997 998 999
    if( p_media->i_length > 0 )
    p += sprintf( p, "a=range:npt=0-%.3f\r\n",
                  ((float)(p_media->i_length/1000))/1000 );

1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035
    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;
1036
}