rtsp.c 33.5 KB
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/*****************************************************************************
 * rtsp.c: rtsp VoD server module
 *****************************************************************************
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 * Copyright (C) 2003-2004 the VideoLAN team
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 * $Id$
 *
 * 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_( \
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    "You can set the address, port and path the rtsp interface will bind to." \
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    "\nSyntax is address:port/path. Default is to bind to any address "\
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    "on port 554, with no path." )
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vlc_module_begin();
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    set_shortname( _("RTSP VoD" ) );
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    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;
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    char         *psz_rtsp_control_v4, *psz_rtsp_control_v6;
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    char         *psz_rtsp_path;

    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_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 * );

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static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
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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.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_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 */
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    free( p_sys->psz_path );
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    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 =
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        httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
                            NULL, NULL );
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    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 );

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    asprintf( &p_media->psz_rtsp_control_v4,
               "a=control:rtsp://%%s:%d%s/trackid=%%d\r\n",
               p_sys->i_port, p_media->psz_rtsp_path );
    asprintf( &p_media->psz_rtsp_control_v6,
               "a=control:rtsp://[%%s]:%d%s/trackid=%%d\r\n",
              p_sys->i_port, p_media->psz_rtsp_path );
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    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 );
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    if( p_media->psz_rtsp_control_v6 ) free( p_media->psz_rtsp_control_v6 );
    if( p_media->psz_rtsp_control_v4 ) free( p_media->psz_rtsp_control_v4 );
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    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->psz_session_name );
    free( p_media->psz_session_description );
    free( p_media->psz_session_url );
    free( p_media->psz_session_email );
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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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    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; 
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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 =
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        httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
                            NULL );
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    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 );
560 561 562 563 564 565 566
}

/****************************************************************************
 * RTSP server implementation
 ****************************************************************************/
static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
{
567
    rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
568 569
    memset( p_rtsp, 0, sizeof(rtsp_client_t) );
    p_rtsp->es = 0;
570

571 572
    p_rtsp->psz_session = psz_session;
    TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
573 574 575

    msg_Dbg( p_media->p_vod, "new session: %s", psz_session );

576
    return p_rtsp;
577 578 579 580 581 582
}

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

583
    for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
584 585 586 587 588 589 590 591 592 593
    {
        if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
        {
            return p_media->rtsp[i];
        }
    }

    return NULL;
}

594
static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
595
{
596
    msg_Dbg( p_media->p_vod, "closing session: %s", p_rtsp->psz_session );
597

598 599
    while( p_rtsp->i_es-- )
    {
600 601 602 603
        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 );
604 605
    }

606
    TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
607

608 609
    free( p_rtsp->psz_session );
    free( p_rtsp );
610 611 612 613 614 615 616 617
}

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_session = NULL;
618
    rtsp_client_t *p_rtsp;
619 620 621 622 623 624 625 626 627 628 629 630 631 632

    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 =
633
                SDPGenerate( p_media, cl );
634

635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650
            if( psz_sdp != NULL )
            {
                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 );
            }
            else
            {
                answer->i_status = 500;
                answer->psz_status = strdup( "Internal server error" );
                answer->p_body = NULL;
                answer->i_body = 0;
            }
651 652 653 654 655
            break;
        }

        case HTTPD_MSG_PLAY:
        {
656
            char *psz_output, ip[NI_MAXNUMERICHOST];
657
            int i, i_port_audio = 0, i_port_video = 0;
658 659 660 661 662 663 664 665 666 667

            /* 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 );

668 669 670 671 672 673 674 675 676 677 678 679
            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;

680
            if( httpd_ClientIP( cl, ip ) == NULL ) break;
681

682
            p_rtsp->b_playing = VLC_TRUE;
683 684

            /* FIXME for != 1 video and 1 audio */
685
            for( i = 0; i < p_rtsp->i_es; i++ )
686
            {
687 688 689 690
                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;
691
            }
692

693 694 695 696 697 698 699 700 701 702 703
            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 );
            }

704 705 706
            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PLAY,
                              psz_output );
            free( psz_output );
707 708 709 710 711 712
            break;
        }

        case HTTPD_MSG_PAUSE:
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
713

714 715 716
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;

717
            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PAUSE );
718
            p_rtsp->b_paused = VLC_TRUE;
719 720 721 722 723 724

            answer->i_status = 200;
            answer->psz_status = strdup( "OK" );
            answer->i_body = 0;
            answer->p_body = NULL;
            break;
725 726 727 728 729 730 731 732 733 734 735

        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);

736 737
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;
738 739

            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_STOP );
740
            RtspClientDel( p_media, p_rtsp );
741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760
            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;
}

761
static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
762 763
                           httpd_message_t *answer, httpd_message_t *query )
{
764 765
    media_es_t *p_es = (media_es_t*)p_args;
    vod_media_t *p_media = p_es->p_media;
766
    vod_t *p_vod = p_media->p_vod;
767
    rtsp_client_t *p_rtsp = NULL;
768 769
    char *psz_session = NULL;
    char *psz_transport = NULL;
770
    char *psz_position = NULL;
771
    int i;
772 773 774 775 776 777 778 779 780 781 782 783 784 785 786

    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 );

787 788
        if( strstr( psz_transport, "unicast" ) &&
            strstr( psz_transport, "client_port=" ) )
789
        {
790 791
            rtsp_client_t *p_rtsp;
            rtsp_client_es_t *p_rtsp_es;
792
            char ip[NI_MAXNUMERICHOST];
793 794 795
            int i_port = atoi( strstr( psz_transport, "client_port=" ) +
                               strlen("client_port=") );

796
            if( httpd_ClientIP( cl, ip ) == NULL )
797
            {
798
                answer->i_status = 500;
799 800 801 802 803 804 805 806 807 808 809 810 811
                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() );
812
                p_rtsp = RtspClientNew( p_media, psz_session );
813 814 815
            }
            else
            {
816 817
                p_rtsp = RtspClientGet( p_media, psz_session );
                if( !p_rtsp )
818 819
                {
                    /* FIXME right error code */
820
                    answer->i_status = 454;
821 822 823 824 825 826 827 828
                    answer->psz_status = strdup( "Unknown session id" );
                    answer->i_body = 0;
                    answer->p_body = NULL;
                    free( ip );
                    break;
                }
            }

829 830 831 832 833
            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 );
834 835 836 837 838 839 840 841 842 843 844

            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" ) ) */
        {
845 846
            answer->i_status = 461;
            answer->psz_status = strdup( "Unsupported Transport" );
847 848 849 850 851
            answer->i_body = 0;
            answer->p_body = NULL;
        }
        break;

852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882
        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:
883 884
            /* This is kind of a kludge. Should we only support Aggregate
             * Operations ? */
885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906
            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 );
                }
            }

907 908
            answer->i_status = 200;
            answer->psz_status = strdup( "OK" );
909 910 911 912
            answer->i_body = 0;
            answer->p_body = NULL;
            break;

913
        case HTTPD_MSG_PAUSE:
914 915
            /* This is kind of a kludge. Should we only support Aggregate
             * Operations ? */
916 917 918
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );

919 920 921 922 923 924 925 926
            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" );
927 928 929 930
            answer->i_body = 0;
            answer->p_body = NULL;
            break;

931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953
        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 ?
 *****************************************************************************/
954
static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
955
{
956
    int i, i_size;
957
    char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
958
    const char *psz_control;
959 960 961 962 963 964 965 966 967

    if( httpd_ServerIP( cl, ip ) == NULL )
        return NULL;

    p = strchr( ip, '%' );
    if( p != NULL )
        *p = '\0'; /* remove scope if present */

    ipv = ( strchr( ip, ':' ) != NULL ) ? '6' : '4';
968 969

    /* Calculate size */
970 971 972 973 974 975 976 977 978 979
    i_size = sizeof( "v=0\r\n" ) +
        sizeof( "o=- * * IN IP4 \r\n" ) + 10 + NI_MAXNUMERICHOST +
        sizeof( "s=*\r\n" ) + strlen( p_media->psz_session_name ) +
        sizeof( "i=*\r\n" ) + strlen( p_media->psz_session_description ) +
        sizeof( "u=*\r\n" ) + strlen( p_media->psz_session_url ) +
        sizeof( "e=*\r\n" ) + strlen( p_media->psz_session_email ) +
        sizeof( "t=0 0\r\n" ) + /* FIXME */
        sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
        sizeof( "c=IN IP4 0.0.0.0\r\n" ) + 20 + 10 +
        sizeof( "a=range:npt=0-1000000000.000\r\n" );
980

981 982
    psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
                               : p_media->psz_rtsp_control_v4;
983 984 985 986
    for( i = 0; i < p_media->i_es; i++ )
    {
        media_es_t *p_es = p_media->es[i];

987
        i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
988 989
        if( p_es->psz_rtpmap )
        {
990 991
            i_size += sizeof( "a=rtpmap:* *\r\n" ) +
                strlen( p_es->psz_rtpmap ) + 9;
992 993 994
        }
        if( p_es->psz_fmtp )
        {
995 996
            i_size += sizeof( "a=fmtp:* *\r\n" ) +
                strlen( p_es->psz_fmtp ) + 9;
997 998
        }
    }
999
    i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1000 1001 1002

    p = psz_sdp = malloc( i_size );
    p += sprintf( p, "v=0\r\n" );
1003 1004
    p += sprintf( p, "o=- "I64Fd" %d IN IP%c %s\r\n",
                  p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016
    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" );

1017
    p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1018

1019 1020 1021 1022
    if( p_media->i_length > 0 )
    p += sprintf( p, "a=range:npt=0-%.3f\r\n",
                  ((float)(p_media->i_length/1000))/1000 );

1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052
    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 );
        }

1053
        p += sprintf( p, psz_control, ip, i );
1054 1055 1056
    }

    return psz_sdp;
1057
}