standard.c

video linux conference

/*****************************************************************************
 * standard.c: standard stream output module
 *****************************************************************************
 * Copyright (C) 2003-2004 VideoLAN
 * $Id: standard.c 10470 2005-03-28 23:24:21Z hartman $
 *
 * Authors: Laurent Aimar <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <stdlib.h>
#include <string.h>

#include <vlc/vlc.h>
#include <vlc/sout.h>

#ifdef HAVE_UNISTD_H
#    include <unistd.h>
#endif

#include "announce.h"
#include "network.h"

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
#define ACCESS_TEXT N_("Output access method")
#define ACCESS_LONGTEXT N_( \
    "Allows you to specify the output access method used for the streaming " \
    "output." )
#define MUX_TEXT N_("Output muxer")
#define MUX_LONGTEXT N_( \
    "Allows you to specify the output muxer method used for the streaming " \
    "output." )
#define URL_TEXT N_("Output URL")
#define URL_LONGTEXT N_( \
    "Allows you to specify the output URL used for the streaming output." )

#define NAME_TEXT N_("Session name")
#define NAME_LONGTEXT N_( \
    "Name of the session that will be announced with SAP or SLP" )

#define GROUP_TEXT N_("Session groupname")
#define GROUP_LONGTEXT N_( \
    "Name of the group that will be announced for the session" )

#define SAP_TEXT N_("SAP announcing")
#define SAP_LONGTEXT N_("Announce this session with SAP")

#define SAPv6_TEXT N_("SAP IPv6 announcing")
#define SAPv6_LONGTEXT N_("Use IPv6 to announce this session with SAP")

#define SLP_TEXT N_("SLP announcing")
#define SLP_LONGTEXT N_("Announce this session with SLP")

static int      Open    ( vlc_object_t * );
static void     Close   ( vlc_object_t * );

#define SOUT_CFG_PREFIX "sout-standard-"

vlc_module_begin();
    set_shortname( _("Standard"));
    set_description( _("Standard stream output") );
    set_capability( "sout stream", 50 );
    add_shortcut( "standard" );
    add_shortcut( "std" );
    set_category( CAT_SOUT );
    set_subcategory( SUBCAT_SOUT_STREAM );

    add_string( SOUT_CFG_PREFIX "access", "", NULL, ACCESS_TEXT,
                ACCESS_LONGTEXT, VLC_FALSE );
    add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
                MUX_LONGTEXT, VLC_FALSE );
    add_string( SOUT_CFG_PREFIX "url", "", NULL, URL_TEXT,
                URL_LONGTEXT, VLC_FALSE );

    add_bool( SOUT_CFG_PREFIX "sap", 0, NULL, SAP_TEXT, SAP_LONGTEXT, VLC_TRUE );
    add_string( SOUT_CFG_PREFIX "name", "", NULL, NAME_TEXT, NAME_LONGTEXT,
                                        VLC_TRUE );
    add_string( SOUT_CFG_PREFIX "group", "", NULL, GROUP_TEXT, GROUP_LONGTEXT,
                                        VLC_TRUE );
    add_bool( SOUT_CFG_PREFIX "sap-ipv6", 0, NULL, SAPv6_TEXT, SAPv6_LONGTEXT,
                                        VLC_TRUE );

    add_bool( SOUT_CFG_PREFIX "slp", 0, NULL, SLP_TEXT, SLP_LONGTEXT, VLC_TRUE );

    set_callbacks( Open, Close );
vlc_module_end();


/*****************************************************************************
 * Exported prototypes
 *****************************************************************************/
static const char *ppsz_sout_options[] = {
    "access", "mux", "url",
    "sap", "name", "sap-ipv6", "group",
    "slp", NULL
};

#define DEFAULT_IPV6_SCOPE '8'
#define DEFAULT_PORT 1234

static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
static int               Del ( sout_stream_t *, sout_stream_id_t * );
static int               Send( sout_stream_t *, sout_stream_id_t *, block_t* );

struct sout_stream_sys_t
{
    sout_mux_t           *p_mux;
    slp_session_t        *p_slp;
    session_descriptor_t *p_session;
};

/*****************************************************************************
 * Open:
 *****************************************************************************/
static int Open( vlc_object_t *p_this )
{
    sout_stream_t       *p_stream = (sout_stream_t*)p_this;
    sout_instance_t     *p_sout = p_stream->p_sout;
    slp_session_t       *p_slp = NULL;

    char *psz_mux;
    char *psz_access;
    char *psz_url;

    vlc_value_t val;

    sout_access_out_t   *p_access;
    sout_mux_t          *p_mux;

    char                *psz_mux_byext = NULL;

    sout_CfgParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
                   p_stream->p_cfg );

    var_Get( p_stream, SOUT_CFG_PREFIX "access", &val );
    psz_access = *val.psz_string ? val.psz_string : NULL;
    if( val.psz_string && !*val.psz_string ) free( val.psz_string );

    var_Get( p_stream, SOUT_CFG_PREFIX "mux", &val );
    psz_mux = *val.psz_string ? val.psz_string : NULL;
    if( val.psz_string && !*val.psz_string ) free( val.psz_string );

    var_Get( p_stream, SOUT_CFG_PREFIX "url", &val );
    psz_url = *val.psz_string ? val.psz_string : NULL;
    if( val.psz_string && !*val.psz_string ) free( val.psz_string );

    p_stream->p_sys = malloc( sizeof( sout_stream_sys_t) );
    p_stream->p_sys->p_session = NULL;

    msg_Dbg( p_this, "creating `%s/%s://%s'", psz_access, psz_mux, psz_url );

    /* ext -> muxer name */
    if( psz_url && strrchr( psz_url, '.' ) )
    {
        /* by extention */
        static struct { char *ext; char *mux; } exttomux[] =
        {
            { "avi", "avi" },
            { "ogg", "ogg" },
            { "ogm", "ogg" },
            { "mp4", "mp4" },
            { "mov", "mov" },
            { "moov","mov" },
            { "asf", "asf" },
            { "wma", "asf" },
            { "wmv", "asf" },
            { "trp", "ts" },
            { "ts",  "ts" },
            { "mpg", "ps" },
            { "mpeg","ps" },
            { "ps",  "ps" },
            { "mpeg1","mpeg1" },
            { NULL,  NULL }
        };
        char *psz_ext = strrchr( psz_url, '.' ) + 1;
        int  i;

        msg_Dbg( p_this, "extention is %s", psz_ext );
        for( i = 0; exttomux[i].ext != NULL; i++ )
        {
            if( !strcasecmp( psz_ext, exttomux[i].ext ) )
            {
                psz_mux_byext = exttomux[i].mux;
                break;
            }
        }
        msg_Dbg( p_this, "extention -> mux=%s", psz_mux_byext );
    }

    /* We fix access/mux to valid couple */

    if( !psz_access && !psz_mux )
    {
        if( psz_mux_byext )
        {
            msg_Warn( p_stream,
                      "no access _and_ no muxer, extention gives file/%s",
                      psz_mux_byext );
            psz_access = strdup("file");
            psz_mux    = strdup(psz_mux_byext);
        }
        else
        {
            msg_Err( p_stream, "no access _and_ no muxer (fatal error)" );
            return VLC_EGENERIC;
        }
    }

    if( psz_access && !psz_mux )
    {
        /* access given, no mux */
        if( !strncmp( psz_access, "mmsh", 4 ) )
        {
            psz_mux = strdup("asfh");
        }
        else if( !strncmp( psz_access, "udp", 3 ) )
        {
            psz_mux = strdup("ts");
        }
        else if( psz_mux_byext )
        {
            psz_mux = strdup(psz_mux_byext);
        }
        else
        {
            msg_Err( p_stream, "no mux specified or found by extention" );
            return VLC_EGENERIC;
        }
    }
    else if( psz_mux && !psz_access )
    {
        /* mux given, no access */
        if( !strncmp( psz_mux, "asfh", 4 ) )
        {
            psz_access = strdup("mmsh");