rtsp.c 32.4 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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    "\n Syntax is address:port/path. Default is to bind to any address "\
    "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;
    char         *psz_rtsp_control;
    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_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 * );
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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_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 =
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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 );

    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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    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 );
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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;

576
    for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
577 578 579 580 581 582 583 584 585 586
    {
        if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
        {
            return p_media->rtsp[i];
        }
    }

    return NULL;
}

587
static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
588
{
589
    msg_Dbg( p_media->p_vod, "closing session: %s", p_rtsp->psz_session );
590

591 592
    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 );
597 598
    }

599
    TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
600

601 602
    free( p_rtsp->psz_session );
    free( p_rtsp );
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}

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;
611
    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 =
626
                SDPGenerate( p_media );
627 628 629 630 631

            answer->i_status = 200;
            answer->psz_status = strdup( "OK" );
            httpd_MsgAdd( answer, "Content-type",  "%s", "application/sdp" );

632
            answer->p_body = (uint8_t *)psz_sdp;
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            answer->i_body = strlen( psz_sdp );
            break;
        }

        case HTTPD_MSG_PLAY:
        {
639 640
            char *psz_output, *ip;
            int i, i_port_audio = 0, i_port_video = 0;
641 642 643 644 645 646 647 648 649 650

            /* 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;

663 664
            if( !(ip = httpd_ClientIP( cl )) ) break;

665
            p_rtsp->b_playing = VLC_TRUE;
666 667

            /* FIXME for != 1 video and 1 audio */
668
            for( i = 0; i < p_rtsp->i_es; i++ )
669
            {
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                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;
674
            }
675

676 677 678 679 680 681 682 683 684 685 686
            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 );
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698 699 700
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;

701
            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PAUSE );
702
            p_rtsp->b_paused = VLC_TRUE;
703 704 705 706 707 708

            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;
722 723

            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_STOP );
724
            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;
}

745
static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
746 747
                           httpd_message_t *answer, httpd_message_t *query )
{
748 749
    media_es_t *p_es = (media_es_t*)p_args;
    vod_media_t *p_media = p_es->p_media;
750
    vod_t *p_vod = p_media->p_vod;
751
    rtsp_client_t *p_rtsp = NULL;
752 753
    char *psz_session = NULL;
    char *psz_transport = NULL;
754
    char *psz_position = NULL;
755
    int i;
756 757 758 759 760 761 762 763 764 765 766 767 768 769 770

    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 );

771 772
        if( strstr( psz_transport, "unicast" ) &&
            strstr( psz_transport, "client_port=" ) )
773
        {
774 775
            rtsp_client_t *p_rtsp;
            rtsp_client_es_t *p_rtsp_es;
776 777 778 779 780 781
            char *ip = httpd_ClientIP( cl );
            int i_port = atoi( strstr( psz_transport, "client_port=" ) +
                               strlen("client_port=") );

            if( !ip )
            {
782
                answer->i_status = 500;
783 784 785 786 787 788 789 790 791 792 793 794 795
                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() );
796
                p_rtsp = RtspClientNew( p_media, psz_session );
797 798 799
            }
            else
            {
800 801
                p_rtsp = RtspClientGet( p_media, psz_session );
                if( !p_rtsp )
802 803
                {
                    /* FIXME right error code */
804
                    answer->i_status = 454;
805 806 807 808 809 810 811 812
                    answer->psz_status = strdup( "Unknown session id" );
                    answer->i_body = 0;
                    answer->p_body = NULL;
                    free( ip );
                    break;
                }
            }

813 814 815 816 817
            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 );
818 819 820 821 822 823 824 825 826 827 828

            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" ) ) */
        {
829 830
            answer->i_status = 461;
            answer->psz_status = strdup( "Unsupported Transport" );
831 832 833 834 835
            answer->i_body = 0;
            answer->p_body = NULL;
        }
        break;

836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866
        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:
867 868
            /* This is kind of a kludge. Should we only support Aggregate
             * Operations ? */
869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890
            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 );
                }
            }

891 892
            answer->i_status = 200;
            answer->psz_status = strdup( "OK" );
893 894 895 896
            answer->i_body = 0;
            answer->p_body = NULL;
            break;

897
        case HTTPD_MSG_PAUSE:
898 899
            /* This is kind of a kludge. Should we only support Aggregate
             * Operations ? */
900 901 902
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );

903 904 905 906 907 908 909 910
            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" );
911 912 913 914
            answer->i_body = 0;
            answer->p_body = NULL;
            break;

915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937
        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 ?
 *****************************************************************************/
938
static char *SDPGenerate( const vod_media_t *p_media )
939
{
940 941 942 943 944 945 946 947 948 949 950 951
    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" ) +
952
        strlen( "c=IN IPn */*\r\n" ) + 20 + 10 + NI_MAXNUMERICHOST +
953
        strlen( "a=range:npt=0-1000000000.000\r\n" );
954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990

    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" );

991
    p += sprintf( p, "c=IN IP4 0.0.0.0\r\n" );
992

993 994 995 996
    if( p_media->i_length > 0 )
    p += sprintf( p, "a=range:npt=0-%.3f\r\n",
                  ((float)(p_media->i_length/1000))/1000 );

997 998 999 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
    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;
1033
}