rtsp.c 41 KB
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/*****************************************************************************
 * rtsp.c: rtsp VoD server module
 *****************************************************************************
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 * Copyright (C) 2003-2006 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"
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#include "vlc_url.h"
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#include "network.h"
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#include "charset.h"
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/*****************************************************************************
 * 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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#define THROTLE_TEXT N_( "Maximum number of connections" )
#define THROTLE_LONGTEXT N_( "Limit the number of connections " \
    "to a maximum. (0 = unlimited, N = maximum clients)" )

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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 );
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    add_integer( "rtsp-throtle-users", 0, NULL, THROTLE_TEXT, THROTLE_LONGTEXT, VLC_TRUE );
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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;
    char         *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;
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    int i_throtle_users;
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    int i_connections;
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    /* 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;

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    var_Create( p_this, "rtsp-throtle-users", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    p_sys->i_throtle_users = var_GetInteger( p_this, "rtsp-throtle-users" );
    msg_Dbg( p_this, "Allowing up to %d connections", p_sys->i_throtle_users );
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    p_sys->i_connections = 0;

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    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 );
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    p_sys->media = NULL;
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    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;

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error:
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    if( p_sys && p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
    if( p_sys ) free( p_sys );
    vlc_UrlClean( &url );
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    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 );
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    var_Destroy( p_this, "rtsp-throtle-users" );
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    /* 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,
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               "a=control:rtsp://%%s:%d%s/trackID=%%d\r\n",
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               p_sys->i_port, p_media->psz_rtsp_path );
    asprintf( &p_media->psz_rtsp_control_v6,
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               "a=control:rtsp://[%%s]:%d%s/trackID=%%d\r\n",
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              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",
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              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
547 548 549 550 551 552 553

    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++;

554 555 556 557 558 559
    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;
560 561 562 563 564 565 566 567 568 569 570 571 572
    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;
573

574 575 576
    msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );

    vlc_mutex_lock( &p_media->lock );
577
    TAB_REMOVE( p_media->i_es, p_media->es, p_es );
578
    vlc_mutex_unlock( &p_media->lock );
579

580 581 582
    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++;
583 584

    if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
585
    es_format_Clean( &p_es->fmt );
586 587 588 589 590 591 592
}

/****************************************************************************
 * RTSP server implementation
 ****************************************************************************/
static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
{
593
    rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
594 595

    if( !p_rtsp ) return NULL;
596 597
    memset( p_rtsp, 0, sizeof(rtsp_client_t) );
    p_rtsp->es = 0;
598

599 600
    p_rtsp->psz_session = psz_session;
    TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
601

602 603
    p_media->p_vod->p_sys->i_connections++;
    msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
604
             psz_session, p_media->p_vod->p_sys->i_throtle_users );
605

606
    return p_rtsp;
607 608 609 610 611 612
}

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

613
    for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
614 615 616 617 618 619 620 621 622 623
    {
        if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
        {
            return p_media->rtsp[i];
        }
    }

    return NULL;
}

624
static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
625
{
626 627
    p_media->p_vod->p_sys->i_connections--;
    msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
628
             p_rtsp->psz_session, p_media->p_vod->p_sys->i_throtle_users );
629

630 631
    while( p_rtsp->i_es-- )
    {
632 633 634 635
        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 );
636 637
    }

638
    TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
639

640 641
    free( p_rtsp->psz_session );
    free( p_rtsp );
642 643 644 645 646 647 648
}

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;
649
    char *psz_transport = NULL;
650
    char *psz_playnow = NULL; /* support option: x-playNow */
651
    char *psz_session = NULL;
652
    rtsp_client_t *p_rtsp;
653
    int i_port = 0;
654 655 656

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

657
    msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
658 659 660 661

    answer->i_proto   = HTTPD_PROTO_RTSP;
    answer->i_version = query->i_version;
    answer->i_type    = HTTPD_MSG_ANSWER;
662 663
    answer->i_body    = 0;
    answer->p_body      = NULL;
664 665 666

    switch( query->i_type )
    {
667 668
        case HTTPD_MSG_SETUP:
        {
669
            psz_playnow = httpd_MsgGet( query, "x-playNow" );
670 671 672 673 674 675 676 677
            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];
678
                i_port = atoi( strstr( psz_transport, "client_port=" ) +
679 680
                                strlen("client_port=") );

681 682 683
                if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
                    strstr( psz_transport, "RAW/RAW/UDP" ) )
                {
684
                    p_media->b_raw = VLC_TRUE;
685
                }
686

687 688 689 690 691 692 693 694 695 696
                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",
697
                         ip, i_port );
698 699 700 701

                psz_session = httpd_MsgGet( query, "Session" );
                if( !psz_session || !*psz_session )
                {
702 703
                    if( ( p_vod->p_sys->i_throtle_users > 0 ) &&
                        ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throtle_users ) )
704
                    {
705
                        answer->i_status = 503;
706 707 708 709 710
                        answer->psz_status = strdup( "Too many connections" );
                        answer->i_body = 0;
                        answer->p_body = NULL;
                        break;
                    }
711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731
                    asprintf( &psz_session, "%d", rand() );
                    p_rtsp = RtspClientNew( p_media, psz_session );
                }
                else
                {
                    p_rtsp = RtspClientGet( p_media, psz_session );
                    if( !p_rtsp )
                    {
                        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;

732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747
                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 );
748 749 750 751 752 753 754 755
            }
            else /* TODO  strstr( psz_transport, "interleaved" ) ) */
            {
                answer->i_status = 461;
                answer->psz_status = strdup( "Unsupported Transport" );
                answer->i_body = 0;
                answer->p_body = NULL;
            }
756

757
            if( !psz_playnow || !*psz_playnow )
758
                break;
759 760 761 762
        }

        case HTTPD_MSG_PLAY:
        {
763
            char *psz_output, ip[NI_MAXNUMERICHOST];
764
            int i, i_port_audio = 0, i_port_video = 0;
765 766

            /* for now only multicast so easy */
767 768 769 770 771 772 773
            if( !psz_playnow )
            {
                answer->i_status = 200;
                answer->psz_status = strdup( "OK" );
                answer->i_body = 0;
                answer->p_body = NULL;
            }
774

775 776
            if( !psz_session )
                psz_session = httpd_MsgGet( query, "Session" );
777 778
            msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );

779 780 781 782 783 784 785 786 787 788 789 790
            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;

791
            if( httpd_ClientIP( cl, ip ) == NULL ) break;
792

793
            p_rtsp->b_playing = VLC_TRUE;
794 795

            /* FIXME for != 1 video and 1 audio */
796
            for( i = 0; i < p_rtsp->i_es; i++ )
797
            {
798 799 800 801
                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;
802
            }
803

804 805
            if( p_media->psz_mux )
            {
806 807 808 809 810 811 812 813 814 815
                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 );
                }
816 817 818 819 820 821 822
            }
            else
            {
                asprintf( &psz_output, "rtp{dst=%s,port-video=%i,"
                          "port-audio=%i}", ip, i_port_video, i_port_audio );
            }

823 824 825
            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PLAY,
                              psz_output );
            free( psz_output );
826 827 828
            break;
        }

829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852
        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;
        }

853 854 855
        case HTTPD_MSG_PAUSE:
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
856

857 858 859
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;

860
            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_PAUSE );
861
            p_rtsp->b_paused = VLC_TRUE;
862 863 864 865 866 867

            answer->i_status = 200;
            answer->psz_status = strdup( "OK" );
            answer->i_body = 0;
            answer->p_body = NULL;
            break;
868 869 870 871 872 873 874 875 876 877 878

        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);

879 880
            p_rtsp = RtspClientGet( p_media, psz_session );
            if( !p_rtsp ) break;
881 882

            vod_MediaControl( p_vod, p_media, psz_session, VOD_MEDIA_STOP );
883
            RtspClientDel( p_media, p_rtsp );
884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903
            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;
}

904
static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
905 906
                           httpd_message_t *answer, httpd_message_t *query )
{
907 908
    media_es_t *p_es = (media_es_t*)p_args;
    vod_media_t *p_media = p_es->p_media;
909
    vod_t *p_vod = p_media->p_vod;
910
    rtsp_client_t *p_rtsp = NULL;
911
    char *psz_transport = NULL;
912 913
    char *psz_playnow = NULL; /* support option: x-playNow */
    char *psz_session = NULL;
914
    char *psz_position = NULL;
915
    int i;
916 917 918

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

919
    msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
920 921 922 923

    answer->i_proto   = HTTPD_PROTO_RTSP;
    answer->i_version = query->i_version;
    answer->i_type    = HTTPD_MSG_ANSWER;
924 925
    answer->i_body    = 0;
    answer->p_body      = NULL;
926 927 928

    switch( query->i_type )
    {
929 930 931
        case HTTPD_MSG_SETUP:
            psz_playnow = httpd_MsgGet( query, "x-playNow" );
            psz_transport = httpd_MsgGet( query, "Transport" );
932

933
            msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
934

935 936
            if( strstr( psz_transport, "unicast" ) &&
                strstr( psz_transport, "client_port=" ) )
937
            {
938 939 940 941 942
                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=") );
943

944
                if( httpd_ClientIP( cl, ip ) == NULL )
945
                {
946 947
                    answer->i_status = 500;
                    answer->psz_status = strdup( "Internal server error" );
948 949 950 951 952
                    answer->i_body = 0;
                    answer->p_body = NULL;
                    break;
                }

953 954
                msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
                        ip, i_port );
955

956 957 958
                psz_session = httpd_MsgGet( query, "Session" );
                if( !psz_session || !*psz_session )
                {
959 960
                    if( ( p_vod->p_sys->i_throtle_users > 0 ) &&
                        ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throtle_users ) )
961
                    {
962
                        answer->i_status = 503;
963 964 965 966 967
                        answer->psz_status = strdup( "Too many connections" );
                        answer->i_body = 0;
                        answer->p_body = NULL;
                        break;
                    }
968 969 970 971 972 973 974 975 976 977 978 979 980 981 982
                    asprintf( &psz_session, "%d", rand() );
                    p_rtsp = RtspClientNew( p_media, psz_session );
                }
                else
                {
                    p_rtsp = RtspClientGet( p_media, psz_session );
                    if( !p_rtsp )
                    {
                        answer->i_status = 454;
                        answer->psz_status = strdup( "Unknown session id" );
                        answer->i_body = 0;
                        answer->p_body = NULL;
                        break;
                    }
                }
983

984 985 986 987 988 989 990 991 992 993 994
                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;

995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012
                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 );
                }
1013 1014 1015 1016 1017 1018 1019 1020
            }
            else /* TODO  strstr( psz_transport, "interleaved" ) ) */
            {
                answer->i_status = 461;
                answer->psz_status = strdup( "Unsupported Transport" );
                answer->i_body = 0;
                answer->p_body = NULL;
            }
1021

1022
            if( !psz_playnow || !*psz_playnow )
1023
                break;
1024 1025

        case HTTPD_MSG_PLAY:
1026 1027
            /* This is kind of a kludge. Should we only support Aggregate
             * Operations ? */
1028 1029 1030 1031 1032 1033 1034 1035 1036
            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 )
            {
1037 1038
                double f_pos;
                char *end;
1039 1040 1041 1042

                msg_Dbg( p_vod, "seeking request: %s", psz_position );

                psz_position += 4;
1043 1044 1045
                /* FIXME: npt= is not necessarily formatted as a float */
                f_pos = us_strtod( psz_position, &end );
                if( end > psz_position )
1046
                {
1047
                    f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1048
                    vod_MediaControl( p_vod, p_media, psz_session,
1049
                                      VOD_MEDIA_SEEK, f_pos );
1050 1051 1052
                }
            }

1053 1054 1055 1056 1057 1058 1059
            if( !psz_playnow )
            {
                answer->i_status = 200;
                answer->psz_status = strdup( "OK" );
                answer->i_body = 0;
                answer->p_body = NULL;
            }
1060 1061
            break;

1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
        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;

1092
        case HTTPD_MSG_PAUSE:
1093 1094
            /* This is kind of a kludge. Should we only support Aggregate
             * Operations ? */
1095 1096 1097
            psz_session = httpd_MsgGet( query, "Session" );
            msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );

1098 1099 1100 1101 1102 1103 1104 1105
            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" );
1106 1107 1108 1109
            answer->i_body = 0;
            answer->p_body = NULL;
            break;

1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130
        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 ?
 *****************************************************************************/
1131
static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1132
{
1133
    int i, i_size;
1134
    char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1135
    const char *psz_control;
1136
    lldiv_t d;
1137 1138 1139 1140 1141 1142 1143 1144 1145

    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';
1146 1147

    /* Calculate size */
1148 1149 1150 1151 1152 1153 1154 1155 1156 1157
    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" );
1158

1159 1160
    psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
                               : p_media->psz_rtsp_control_v4;
1161 1162 1163 1164
    for( i = 0; i < p_media->i_es; i++ )
    {
        media_es_t *p_es = p_media->es[i];

1165
        i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1166 1167
        if( p_es->psz_rtpmap )
        {
1168 1169
            i_size += sizeof( "a=rtpmap:* *\r\n" ) +
                strlen( p_es->psz_rtpmap ) + 9;
1170 1171 1172
        }
        if( p_es->psz_fmtp )
        {
1173 1174
            i_size += sizeof( "a=fmtp:* *\r\n" ) +
                strlen( p_es->psz_fmtp ) + 9;
1175 1176
        }
    }
1177
    i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1178 1179 1180

    p = psz_sdp = malloc( i_size );
    p += sprintf( p, "v=0\r\n" );
1181 1182
    p += sprintf( p, "o=- "I64Fd" %d IN IP%c %s\r\n",
                  p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194
    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" );

1195
    p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1196

1197
    if( p_media->i_length > 0 )
1198
    {
1199
        d = lldiv( p_media->i_length / 1000, 1000 );
1200 1201 1202
        p += sprintf( p, "a=range:npt=0-"I64Fd".%03u\r\n", d.quot,
                      (unsigned)d.rem );
    }
1203

1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233
    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 );
        }

1234
        p += sprintf( p, psz_control, ip, i );
1235 1236 1237
    }

    return psz_sdp;
1238
}