rtsp.c 39 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
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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 *****************************************************************************/

/*****************************************************************************
 * 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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    vlc_bool_t  b_raw;
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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 *, const 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, const char *psz_name,
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                              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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    if( !p_media )
    {
        msg_Err( p_vod, "not enough memory" );
        return NULL;
    }

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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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    p_media->b_raw = VLC_FALSE;
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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 NULL;
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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_SETUP,
                    RtspCallback, (void*)p_media );
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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++;
            }
            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', ' ', ' ' ):
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            p_es->i_payload_type = p_media->i_payload_type++;
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            p_es->psz_rtpmap = malloc( strlen( "L8/*/*" ) + 20+1 );
            sprintf( p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
                    p_fmt->audio.i_channels );
            break;
        case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
            p_es->i_payload_type = 14;
            p_es->psz_rtpmap = strdup( "MPA/90000" );
            break;
        case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
            p_es->i_payload_type = 32;
            p_es->psz_rtpmap = strdup( "MPV/90000" );
            break;
        case VLC_FOURCC( 'a', '5', '2', ' ' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( "ac3/90000" );
            break;
        case VLC_FOURCC( 'H', '2', '6', '3' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( "H263-1998/90000" );
            break;
        case VLC_FOURCC( 'm', 'p', '4', 'v' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
            if( p_fmt->i_extra > 0 )
            {
                char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
                p_es->psz_fmtp = malloc( 100 + 2 * p_fmt->i_extra );
                sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
                sprintf( p_es->psz_fmtp,
                        "profile-level-id=3; config=%s;", p_hexa );
                free( p_hexa );
            }
            break;
        case VLC_FOURCC( 'm', 'p', '4', 'a' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = malloc( strlen( "mpeg4-generic/" ) + 12 );
            sprintf( p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate );
            if( p_fmt->i_extra > 0 )
            {
                char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
                p_es->psz_fmtp = malloc( 200 + 2 * p_fmt->i_extra );
                sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
                sprintf( p_es->psz_fmtp,
                        "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
                        "config=%s; SizeLength=13;IndexLength=3; "
                        "IndexDeltaLength=3; Profile=1;", p_hexa );
                free( p_hexa );
            }
            break;
        case VLC_FOURCC( 'm', 'p', '2', 't' ):
            p_media->psz_mux = "ts";
            p_es->i_payload_type = 33;
            p_es->psz_rtpmap = strdup( "MP2T/90000" );
            break;
        case VLC_FOURCC( 'm', 'p', '2', 'p' ):
            p_media->psz_mux = "ps";
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( "MP2P/90000" );
            break;
        case VLC_FOURCC( 's', 'a', 'm', 'r' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
                                    "AMR/8000/2" : "AMR/8000" );
            p_es->psz_fmtp = strdup( "octet-align=1" );
            break;
        case VLC_FOURCC( 's', 'a', 'w', 'b' ):
            p_es->i_payload_type = p_media->i_payload_type++;
            p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
                                    "AMR-WB/16000/2" : "AMR-WB/16000" );
            p_es->psz_fmtp = strdup( "octet-align=1" );
            break;
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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;
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    }

    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 );
561
    TAB_REMOVE( p_media->i_es, p_media->es, p_es );
562
    vlc_mutex_unlock( &p_media->lock );
563

564 565 566
    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++;
567 568

    if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
569
    es_format_Clean( &p_es->fmt );
570 571 572 573 574 575 576
}

/****************************************************************************
 * RTSP server implementation
 ****************************************************************************/
static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
{
577
    rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
578 579
    memset( p_rtsp, 0, sizeof(rtsp_client_t) );
    p_rtsp->es = 0;
580

581 582
    p_rtsp->psz_session = psz_session;
    TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
583 584 585

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

586
    return p_rtsp;
587 588 589 590 591 592
}

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

593
    for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
594 595 596 597 598 599 600 601 602 603
    {
        if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
        {
            return p_media->rtsp[i];
        }
    }

    return NULL;
}

604
static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
605
{
606
    msg_Dbg( p_media->p_vod, "closing session: %s", p_rtsp->psz_session );
607

608 609
    while( p_rtsp->i_es-- )
    {
610 611 612 613
        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 );
614 615
    }

616
    TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
617

618 619
    free( p_rtsp->psz_session );
    free( p_rtsp );
620 621 622 623 624 625 626
}

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;
627
    char *psz_transport = NULL;
628
    char *psz_playnow = NULL; /* support option: x-playNow */
629
    char *psz_session = NULL;
630
    rtsp_client_t *p_rtsp;
631
    int i_port = 0;
632 633 634

    if( answer == NULL || query == NULL ) return VLC_SUCCESS;

635
    msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
636 637 638 639

    answer->i_proto   = HTTPD_PROTO_RTSP;
    answer->i_version = query->i_version;
    answer->i_type    = HTTPD_MSG_ANSWER;
640 641
    answer->i_body    = 0;
    answer->p_body      = NULL;
642 643 644

    switch( query->i_type )
    {
645 646
        case HTTPD_MSG_SETUP:
        {
647
            psz_playnow = httpd_MsgGet( query, "x-playNow" );
648 649 650 651 652 653 654 655
            psz_transport = httpd_MsgGet( query, "Transport" );
            msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );

            if( strstr( psz_transport, "unicast" ) &&
                strstr( psz_transport, "client_port=" ) )
            {
                rtsp_client_t *p_rtsp;
                char ip[NI_MAXNUMERICHOST];
656
                i_port = atoi( strstr( psz_transport, "client_port=" ) +
657 658
                                strlen("client_port=") );

659 660 661
                if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
                    strstr( psz_transport, "RAW/RAW/UDP" ) )
                {
662
                    p_media->b_raw = VLC_TRUE;
663
                }
664

665 666 667 668 669 670 671 672 673 674
                if( httpd_ClientIP( cl, ip ) == NULL )
                {
                    answer->i_status = 500;
                    answer->psz_status = strdup( "Internal server error" );
                    answer->i_body = 0;
                    answer->p_body = NULL;
                    break;
                }

                msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
675
                         ip, i_port );
676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701

                psz_session = httpd_MsgGet( query, "Session" );
                if( !psz_session || !*psz_session )
                {
                    asprintf( &psz_session, "%d", rand() );
                    p_rtsp = RtspClientNew( p_media, psz_session );
                }
                else
                {
                    p_rtsp = RtspClientGet( p_media, psz_session );
                    if( !p_rtsp )
                    {
                        /* FIXME right error code */
                        answer->i_status = 454;
                        answer->psz_status = strdup( "Unknown session id" );
                        answer->i_body = 0;
                        answer->p_body = NULL;
                        break;
                    }
                }

                answer->i_status = 200;
                answer->psz_status = strdup( "OK" );
                answer->i_body = 0;
                answer->p_body = NULL;

702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717
                if( p_media->b_raw )
                {
                    if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
                    {
                        httpd_MsgAdd( answer, "Transport", "MP2T/H2221/UDP;client_port=%d-%d",
                                      i_port, i_port + 1 );
                    }
                    else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
                    {
                        httpd_MsgAdd( answer, "Transport", "RAW/RAW/UDP;client_port=%d-%d",
                                      i_port, i_port + 1 );
                    }
                }
                else
                    httpd_MsgAdd( answer, "Transport", "RTP/AVP/UDP;client_port=%d-%d",
                                  i_port, i_port + 1 );
718 719 720 721 722 723 724 725
            }
            else /* TODO  strstr( psz_transport, "interleaved" ) ) */
            {
                answer->i_status = 461;
                answer->psz_status = strdup( "Unsupported Transport" );
                answer->i_body = 0;
                answer->p_body = NULL;
            }
726

727
            if( !psz_playnow || !*psz_playnow )
728
                break;
729 730 731 732
        }

        case HTTPD_MSG_PLAY:
        {
733
            char *psz_output, ip[NI_MAXNUMERICHOST];
734
            int i, i_port_audio = 0, i_port_video = 0;
735 736

            /* for now only multicast so easy */
737 738 739 740 741 742 743
            if( !psz_playnow )
            {
                answer->i_status = 200;
                answer->psz_status = strdup( "OK" );
                answer->i_body = 0;
                answer->p_body = NULL;
            }
744

745 746
            if( !psz_session )
                psz_session = httpd_MsgGet( query, "Session" );
747 748
            msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );

749 750 751 752 753 754 755 756 757 758 759 760
            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;

761
            if( httpd_ClientIP( cl, ip ) == NULL ) break;
762

763
            p_rtsp->b_playing = VLC_TRUE;
764 765

            /* FIXME for != 1 video and 1 audio */
766
            for( i = 0; i < p_rtsp->i_es; i++ )
767
            {
768 769 770 771
                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;
772
            }
773

774 775
            if( p_media->psz_mux )
            {
776 777 778 779 780 781 782 783 784 785
                if( p_media->b_raw )
                {
                    asprintf( &psz_output, "std{access=udp,dst=%s:%i,mux=%s}",
                              ip, i_port, p_media->psz_mux );
                }
                else
                {
                    asprintf( &psz_output, "rtp{dst=%s,port=%i,mux=%s}",
                              ip, i_port_video, p_media->psz_mux );
                }
786 787 788 789 790 791 792
            }
            else
            {
                asprintf( &psz_output, "rtp{dst=%s,port-video=%i,"
                          "port-audio=%i}", ip, i_port_video, i_port_audio );
            }

793 794 795
            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PLAY,
                              psz_output );
            free( psz_output );
796 797 798
            break;
        }

799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822
        case HTTPD_MSG_DESCRIBE:
        {
            char *psz_sdp =
                SDPGenerate( p_media, cl );

            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;
            }
            break;
        }

823 824 825
        case HTTPD_MSG_PAUSE:
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
826

827 828 829
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;

830
            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PAUSE );
831
            p_rtsp->b_paused = VLC_TRUE;
832 833 834 835 836 837

            answer->i_status = 200;
            answer->psz_status = strdup( "OK" );
            answer->i_body = 0;
            answer->p_body = NULL;
            break;
838 839 840 841 842 843 844 845 846 847 848

        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);

849 850
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;
851 852

            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_STOP );
853
            RtspClientDel( p_media, p_rtsp );
854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873
            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;
}

874
static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
875 876
                           httpd_message_t *answer, httpd_message_t *query )
{
877 878
    media_es_t *p_es = (media_es_t*)p_args;
    vod_media_t *p_media = p_es->p_media;
879
    vod_t *p_vod = p_media->p_vod;
880
    rtsp_client_t *p_rtsp = NULL;
881
    char *psz_transport = NULL;
882 883
    char *psz_playnow = NULL; /* support option: x-playNow */
    char *psz_session = NULL;
884
    char *psz_position = NULL;
885
    int i;
886 887 888

    if( answer == NULL || query == NULL ) return VLC_SUCCESS;

889
    msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
890 891 892 893

    answer->i_proto   = HTTPD_PROTO_RTSP;
    answer->i_version = query->i_version;
    answer->i_type    = HTTPD_MSG_ANSWER;
894 895
    answer->i_body    = 0;
    answer->p_body      = NULL;
896 897 898

    switch( query->i_type )
    {
899 900 901
        case HTTPD_MSG_SETUP:
            psz_playnow = httpd_MsgGet( query, "x-playNow" );
            psz_transport = httpd_MsgGet( query, "Transport" );
902

903
            msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
904

905 906
            if( strstr( psz_transport, "unicast" ) &&
                strstr( psz_transport, "client_port=" ) )
907
            {
908 909 910 911 912
                rtsp_client_t *p_rtsp;
                rtsp_client_es_t *p_rtsp_es;
                char ip[NI_MAXNUMERICHOST];
                int i_port = atoi( strstr( psz_transport, "client_port=" ) +
                                strlen("client_port=") );
913

914
                if( httpd_ClientIP( cl, ip ) == NULL )
915
                {
916 917
                    answer->i_status = 500;
                    answer->psz_status = strdup( "Internal server error" );
918 919 920 921 922
                    answer->i_body = 0;
                    answer->p_body = NULL;
                    break;
                }

923 924
                msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
                        ip, i_port );
925

926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944
                psz_session = httpd_MsgGet( query, "Session" );
                if( !psz_session || !*psz_session )
                {
                    asprintf( &psz_session, "%d", rand() );
                    p_rtsp = RtspClientNew( p_media, psz_session );
                }
                else
                {
                    p_rtsp = RtspClientGet( p_media, psz_session );
                    if( !p_rtsp )
                    {
                        /* FIXME right error code */
                        answer->i_status = 454;
                        answer->psz_status = strdup( "Unknown session id" );
                        answer->i_body = 0;
                        answer->p_body = NULL;
                        break;
                    }
                }
945

946 947 948 949 950 951 952 953 954 955 956
                p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
                p_rtsp_es->i_port = i_port;
                p_rtsp_es->psz_ip = strdup( ip );
                p_rtsp_es->p_media_es = p_es;
                TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );

                answer->i_status = 200;
                answer->psz_status = strdup( "OK" );
                answer->i_body = 0;
                answer->p_body = NULL;

957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974
                if( p_media->b_raw )
                {
                    if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
                    {
                        httpd_MsgAdd( answer, "Transport", "MP2T/H2221/UDP;client_port=%d-%d",
                                      i_port, i_port + 1 );
                    }
                    else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
                    {
                        httpd_MsgAdd( answer, "Transport", "RAW/RAW/UDP;client_port=%d-%d",
                                      i_port, i_port + 1 );
                    }
                }
                else
                {
                    httpd_MsgAdd( answer, "Transport", "RTP/AVP/UDP;client_port=%d-%d",
                                  i_port, i_port + 1 );
                }
975 976 977 978 979 980 981 982
            }
            else /* TODO  strstr( psz_transport, "interleaved" ) ) */
            {
                answer->i_status = 461;
                answer->psz_status = strdup( "Unsupported Transport" );
                answer->i_body = 0;
                answer->p_body = NULL;
            }
983

984
            if( !psz_playnow || !*psz_playnow )
985
                break;
986 987

        case HTTPD_MSG_PLAY:
988 989
            /* This is kind of a kludge. Should we only support Aggregate
             * Operations ? */
990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011
            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 );
                }
            }

1012 1013 1014 1015 1016 1017 1018
            if( !psz_playnow )
            {
                answer->i_status = 200;
                answer->psz_status = strdup( "OK" );
                answer->i_body = 0;
                answer->p_body = NULL;
            }
1019 1020
            break;

1021 1022 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
        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;

1051
        case HTTPD_MSG_PAUSE:
1052 1053
            /* This is kind of a kludge. Should we only support Aggregate
             * Operations ? */
1054 1055 1056
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );

1057 1058 1059 1060 1061 1062 1063 1064
            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" );
1065 1066 1067 1068
            answer->i_body = 0;
            answer->p_body = NULL;
            break;

1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089
        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 ?
 *****************************************************************************/
1090
static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1091
{
1092
    int i, i_size;
1093
    char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1094
    const char *psz_control;
1095 1096 1097 1098 1099 1100 1101 1102 1103

    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';
1104 1105

    /* Calculate size */
1106 1107 1108 1109 1110 1111 1112 1113 1114 1115
    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" );
1116

1117 1118
    psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
                               : p_media->psz_rtsp_control_v4;
1119 1120 1121 1122
    for( i = 0; i < p_media->i_es; i++ )
    {
        media_es_t *p_es = p_media->es[i];

1123
        i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1124 1125
        if( p_es->psz_rtpmap )
        {
1126 1127
            i_size += sizeof( "a=rtpmap:* *\r\n" ) +
                strlen( p_es->psz_rtpmap ) + 9;
1128 1129 1130
        }
        if( p_es->psz_fmtp )
        {
1131 1132
            i_size += sizeof( "a=fmtp:* *\r\n" ) +
                strlen( p_es->psz_fmtp ) + 9;
1133 1134
        }
    }
1135
    i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1136 1137 1138

    p = psz_sdp = malloc( i_size );
    p += sprintf( p, "v=0\r\n" );
1139 1140
    p += sprintf( p, "o=- "I64Fd" %d IN IP%c %s\r\n",
                  p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152
    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" );

1153
    p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1154

1155 1156 1157 1158
    if( p_media->i_length > 0 )
    p += sprintf( p, "a=range:npt=0-%.3f\r\n",
                  ((float)(p_media->i_length/1000))/1000 );

1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188
    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 );
        }

1189
        p += sprintf( p, psz_control, ip, i );
1190 1191 1192
    }

    return psz_sdp;
1193
}