vlm.c 35.7 KB
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/*****************************************************************************
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 * vlm.c: VLM interface plugin
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 *****************************************************************************
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 * Copyright (C) 2000-2005 the VideoLAN team
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 * $Id$
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 *
 * Authors: Simon Latapie <garf@videolan.org>
 *          Laurent Aimar <fenrir@videolan.org>
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 *          Gildas Bazin <gbazin@videolan.org>
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 *
 * 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
 *****************************************************************************/
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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

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#include <vlc_common.h>
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#include <stdio.h>
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#include <ctype.h>                                              /* tolower() */
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#include <assert.h>
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#include <vlc_vlm.h>

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#ifndef WIN32
#   include <sys/time.h>                                   /* gettimeofday() */
#endif

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#ifdef HAVE_TIME_H
#   include <time.h>                                              /* ctime() */
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#   include <sys/timeb.h>                                         /* ftime() */
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#endif

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#include <vlc_input.h>
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#include "input_internal.h"
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#include <vlc_stream.h>
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#include "vlm_internal.h"
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#include <vlc_vod.h>
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#include <vlc_charset.h>
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#include <vlc_sout.h>
#include "../stream_output/stream_output.h"
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#include "../libvlc.h"
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/*****************************************************************************
 * Local prototypes.
 *****************************************************************************/
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static void vlm_Destructor( vlm_t *p_vlm );
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static void* Manage( vlc_object_t * );
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static int vlm_MediaVodControl( void *, vod_media_t *, const char *, int, va_list );
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/*****************************************************************************
 * vlm_New:
 *****************************************************************************/
vlm_t *__vlm_New ( vlc_object_t *p_this )
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{
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    vlc_value_t lockval;
    vlm_t *p_vlm = NULL, **pp_vlm = &(libvlc_priv (p_this->p_libvlc)->p_vlm);
    char *psz_vlmconf;
    static const char vlm_object_name[] = "vlm daemon";
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    /* Avoid multiple creation */
    if( var_Create( p_this->p_libvlc, "vlm_mutex", VLC_VAR_MUTEX ) ||
        var_Get( p_this->p_libvlc, "vlm_mutex", &lockval ) )
        return NULL;
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    vlc_mutex_lock( lockval.p_address );
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    p_vlm = *pp_vlm;
    if( p_vlm )
    {   /* VLM already exists */
        vlc_object_yield( p_vlm );
        vlc_mutex_unlock( lockval.p_address );
        return p_vlm;
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    }
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    msg_Dbg( p_this, "creating VLM" );
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    p_vlm = vlc_custom_create( p_this, sizeof( *p_vlm ), VLC_OBJECT_GENERIC,
                               vlm_object_name );
    if( !p_vlm )
    {
        vlc_mutex_unlock( lockval.p_address );
        return NULL;
    }
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    vlc_mutex_init( &p_vlm->lock );
    p_vlm->i_id = 1;
    TAB_INIT( p_vlm->i_media, p_vlm->media );
    TAB_INIT( p_vlm->i_schedule, p_vlm->schedule );
    p_vlm->i_vod = 0;
    p_vlm->p_vod = NULL;
    vlc_object_attach( p_vlm, p_this->p_libvlc );
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    if( vlc_thread_create( p_vlm, "vlm thread",
                           Manage, VLC_THREAD_PRIORITY_LOW, false ) )
    {
        vlc_mutex_destroy( &p_vlm->lock );
        vlc_object_release( p_vlm );
        return NULL;
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    }

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    /* Load our configuration file */
    psz_vlmconf = var_CreateGetString( p_vlm, "vlm-conf" );
    if( psz_vlmconf && *psz_vlmconf )
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    {
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        vlm_message_t *p_message = NULL;
        char *psz_buffer = NULL;
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        msg_Dbg( p_this, "loading VLM configuration" );
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        if( asprintf(&psz_buffer, "load %s", psz_vlmconf ) != -1 )
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        {
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            msg_Dbg( p_this, "%s", psz_buffer );
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            if( vlm_ExecuteCommand( p_vlm, psz_buffer, &p_message ) )
                msg_Warn( p_this, "error while loading the configuration file" );
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            vlm_MessageDelete( p_message );
            free( psz_buffer );
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        }
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    }
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    free( psz_vlmconf );
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    vlc_object_set_destructor( p_vlm, (vlc_destructor_t)vlm_Destructor );
    *pp_vlm = p_vlm; /* for future reference */
    vlc_mutex_unlock( lockval.p_address );
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    return p_vlm;
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}
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/*****************************************************************************
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 * vlm_Delete:
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 *****************************************************************************/
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void vlm_Delete( vlm_t *p_vlm )
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{
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    vlc_value_t lockval;
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    /* vlm_Delete() is serialized against itself, and against vlm_New().
     * This way, vlm_Destructor () (called from vlc_objet_release() above)
     * is serialized against setting libvlc_priv->p_vlm from vlm_New(). */
    var_Get( p_vlm->p_libvlc, "vlm_mutex", &lockval );
    vlc_mutex_lock( lockval.p_address );
    vlc_object_release( p_vlm );
    vlc_mutex_unlock( lockval.p_address );
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}

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/*****************************************************************************
 * vlm_Destructor:
 *****************************************************************************/
static void vlm_Destructor( vlm_t *p_vlm )
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{
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    libvlc_priv (p_vlm->p_libvlc)->p_vlm = NULL;
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    vlm_ControlInternal( p_vlm, VLM_CLEAR_MEDIAS );
    TAB_CLEAN( p_vlm->i_media, p_vlm->media );
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    vlm_ControlInternal( p_vlm, VLM_CLEAR_SCHEDULES );
    TAB_CLEAN( p_vlm->schedule, p_vlm->schedule );
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    vlc_mutex_destroy( &p_vlm->lock );
}
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/*****************************************************************************
 * vlm_ExecuteCommand:
 *****************************************************************************/
int vlm_ExecuteCommand( vlm_t *p_vlm, const char *psz_command,
                        vlm_message_t **pp_message)
{
    int i_result;
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    vlc_mutex_lock( &p_vlm->lock );
    i_result = ExecuteCommand( p_vlm, psz_command, pp_message );
    vlc_mutex_unlock( &p_vlm->lock );
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    return i_result;
}
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int64_t vlm_Date(void)
{
#ifdef WIN32
    struct timeb tm;
    ftime( &tm );
    return ((int64_t)tm.time) * 1000000 + ((int64_t)tm.millitm) * 1000;
#else
    struct timeval tv_date;
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    /* gettimeofday() cannot fail given &tv_date is a valid address */
    (void)gettimeofday( &tv_date, NULL );
    return (mtime_t) tv_date.tv_sec * 1000000 + (mtime_t) tv_date.tv_usec;
#endif
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}

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/*****************************************************************************
 *
 *****************************************************************************/
static int vlm_MediaVodControl( void *p_private, vod_media_t *p_vod_media,
                                const char *psz_id, int i_query, va_list args )
{
    vlm_t *vlm = (vlm_t *)p_private;
    int i, i_ret;
    const char *psz;
    int64_t id;

    if( !p_private || !p_vod_media )
        return VLC_EGENERIC;
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    vlc_mutex_lock( &vlm->lock );
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    /* Find media id */
    for( i = 0, id = -1; i < vlm->i_media; i++ )
    {
        if( p_vod_media == vlm->media[i]->vod.p_media )
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        {
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            id = vlm->media[i]->cfg.id;
            break;
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        }
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    }
    if( id == -1 )
    {
        vlc_mutex_unlock( &vlm->lock );
        return VLC_EGENERIC;
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    }
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    switch( i_query )
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    {
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    case VOD_MEDIA_PLAY:
        psz = (const char *)va_arg( args, const char * );
        i_ret = vlm_ControlInternal( vlm, VLM_START_MEDIA_VOD_INSTANCE, id, psz_id, 0, psz );
        break;
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    case VOD_MEDIA_PAUSE:
        i_ret = vlm_ControlInternal( vlm, VLM_PAUSE_MEDIA_INSTANCE, id, psz_id );
        break;
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    case VOD_MEDIA_STOP:
        i_ret = vlm_ControlInternal( vlm, VLM_STOP_MEDIA_INSTANCE, id, psz_id );
        break;
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    case VOD_MEDIA_SEEK:
    {
        double d_position = (double)va_arg( args, double );
        i_ret = vlm_ControlInternal( vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, psz_id, d_position/100.0 );
        break;
    }
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    case VOD_MEDIA_REWIND:
    {
        double d_scale = (double)va_arg( args, double );
        double d_position;
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        vlm_ControlInternal( vlm, VLM_GET_MEDIA_INSTANCE_POSITION, id, psz_id, &d_position );
        d_position -= (d_scale / 1000.0);
        if( d_position < 0.0 )
            d_position = 0.0;
        i_ret = vlm_ControlInternal( vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, psz_id, d_position );
        break;
    }
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    case VOD_MEDIA_FORWARD:
    {
        double d_scale = (double)va_arg( args, double );
        double d_position;
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        vlm_ControlInternal( vlm, VLM_GET_MEDIA_INSTANCE_POSITION, id, psz_id, &d_position );
        d_position += (d_scale / 1000.0);
        if( d_position > 1.0 )
            d_position = 1.0;
        i_ret = vlm_ControlInternal( vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, psz_id, d_position );
        break;
    }
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    default:
        i_ret = VLC_EGENERIC;
        break;
    }
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    vlc_mutex_unlock( &vlm->lock );
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    return i_ret;
}
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/*****************************************************************************
 * Manage:
 *****************************************************************************/
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static void* Manage( vlc_object_t* p_object )
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{
    vlm_t *vlm = (vlm_t*)p_object;
    int i, j;
    mtime_t i_lastcheck;
    mtime_t i_time;

    i_lastcheck = vlm_Date();

    while( !vlm->b_die )
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    {
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        char **ppsz_scheduled_commands = NULL;
        int    i_scheduled_commands = 0;
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        vlc_mutex_lock( &vlm->lock );
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        /* destroy the inputs that wants to die, and launch the next input */
        for( i = 0; i < vlm->i_media; i++ )
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        {
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            vlm_media_sys_t *p_media = vlm->media[i];
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            for( j = 0; j < p_media->i_instance; )
            {
                vlm_media_instance_sys_t *p_instance = p_media->instance[j];
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                if( p_instance->p_input && ( p_instance->p_input->b_eof || p_instance->p_input->b_error ) )
                {
                    int i_new_input_index;
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                    /* */
                    i_new_input_index = p_instance->i_index + 1;
                    if( !p_media->cfg.b_vod && p_media->cfg.broadcast.b_loop && i_new_input_index >= p_media->cfg.i_input )
                        i_new_input_index = 0;

                    /* FIXME implement multiple input with VOD */
                    if( p_media->cfg.b_vod || i_new_input_index >= p_media->cfg.i_input )
                        vlm_ControlInternal( vlm, VLM_STOP_MEDIA_INSTANCE, p_media->cfg.id, p_instance->psz_name );
                    else
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                        vlm_ControlInternal( vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, p_media->cfg.id, p_instance->psz_name, i_new_input_index );
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                    j = 0;
                }
                else
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                {
                    j++;
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                }
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            }
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        }
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        /* scheduling */
        i_time = vlm_Date();

        for( i = 0; i < vlm->i_schedule; i++ )
        {
            mtime_t i_real_date = vlm->schedule[i]->i_date;

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            if( vlm->schedule[i]->b_enabled == true )
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            {
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                if( vlm->schedule[i]->i_date == 0 ) // now !
                {
                    vlm->schedule[i]->i_date = (i_time / 1000000) * 1000000 ;
                    i_real_date = i_time;
                }
                else if( vlm->schedule[i]->i_period != 0 )
                {
                    int j = 0;
                    while( vlm->schedule[i]->i_date + j *
                           vlm->schedule[i]->i_period <= i_lastcheck &&
                           ( vlm->schedule[i]->i_repeat > j ||
                             vlm->schedule[i]->i_repeat == -1 ) )
                    {
                        j++;
                    }
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                    i_real_date = vlm->schedule[i]->i_date + j *
                        vlm->schedule[i]->i_period;
                }
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                if( i_real_date <= i_time && i_real_date > i_lastcheck )
                {
                    for( j = 0; j < vlm->schedule[i]->i_command; j++ )
                    {
                        TAB_APPEND( i_scheduled_commands,
                                    ppsz_scheduled_commands,
                                    strdup(vlm->schedule[i]->command[j] ) );
                    }
                }
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            }
        }
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        while( i_scheduled_commands )
        {
            vlm_message_t *message = NULL;
            char *psz_command = ppsz_scheduled_commands[0];
            ExecuteCommand( vlm, psz_command,&message );

            /* for now, drop the message */
            vlm_MessageDelete( message );
            TAB_REMOVE( i_scheduled_commands,
                        ppsz_scheduled_commands,
                        psz_command );
            free( psz_command );
        }
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        i_lastcheck = i_time;

        vlc_mutex_unlock( &vlm->lock );

        msleep( 100000 );
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    }
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    return NULL;
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}

/* New API
 */
/*
typedef struct
{
    struct
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    {
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        int i_connection_count;
        int i_connection_active;
    } vod;
    struct
    {
        int        i_count;
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        bool b_playing;
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        int        i_playing_index;
    } broadcast;
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} vlm_media_status_t;
*/
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/* */
static vlm_media_sys_t *vlm_ControlMediaGetById( vlm_t *p_vlm, int64_t id )
{
    int i;
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    for( i = 0; i < p_vlm->i_media; i++ )
    {
        if( p_vlm->media[i]->cfg.id == id )
            return p_vlm->media[i];
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    }
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    return NULL;
}
static vlm_media_sys_t *vlm_ControlMediaGetByName( vlm_t *p_vlm, const char *psz_name )
{
    int i;
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    for( i = 0; i < p_vlm->i_media; i++ )
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    {
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        if( !strcmp( p_vlm->media[i]->cfg.psz_name, psz_name ) )
            return p_vlm->media[i];
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    }
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    return NULL;
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}
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static int vlm_MediaDescriptionCheck( vlm_t *p_vlm, vlm_media_t *p_cfg )
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{
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    int i;
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    if( !p_cfg || !p_cfg->psz_name ||
        !strcmp( p_cfg->psz_name, "all" ) || !strcmp( p_cfg->psz_name, "media" ) || !strcmp( p_cfg->psz_name, "schedule" ) )
        return VLC_EGENERIC;
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    for( i = 0; i < p_vlm->i_media; i++ )
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    {
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        if( p_vlm->media[i]->cfg.id == p_cfg->id )
            continue;
        if( !strcmp( p_vlm->media[i]->cfg.psz_name, p_cfg->psz_name ) )
            return VLC_EGENERIC;
    }
    return VLC_SUCCESS;
}
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/* Called after a media description is changed/added */
static int vlm_OnMediaUpdate( vlm_t *p_vlm, vlm_media_sys_t *p_media )
{
    vlm_media_t *p_cfg = &p_media->cfg;
    /* Check if we need to create/delete a vod media */
    if( p_cfg->b_vod )
    {
        if( !p_cfg->b_enabled && p_media->vod.p_media )
        {
            p_vlm->p_vod->pf_media_del( p_vlm->p_vod, p_media->vod.p_media );
            p_media->vod.p_media = NULL;
        }
        else if( p_cfg->b_enabled && !p_media->vod.p_media && p_cfg->i_input )
        {
            /* Pre-parse the input */
            input_thread_t *p_input;
            char *psz_output;
            char *psz_header;
            char *psz_dup;
            int i;
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            vlc_gc_decref( p_media->vod.p_item );
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            p_media->vod.p_item = input_item_New( p_vlm, p_cfg->ppsz_input[0],
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                p_cfg->psz_name );
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            if( p_cfg->psz_output )
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            {
                if( asprintf( &psz_output, "%s:description", p_cfg->psz_output )  == -1 )
                    psz_output = NULL;
            }
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            else
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                psz_output = strdup( "#description" );
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            if( psz_output && asprintf( &psz_dup, "sout=%s", psz_output ) != -1 )
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            {
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                input_item_AddOption( p_media->vod.p_item, psz_dup );
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                free( psz_dup );
            }
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            free( psz_output );

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            for( i = 0; i < p_cfg->i_option; i++ )
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                input_item_AddOption( p_media->vod.p_item,
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                                     p_cfg->ppsz_option[i] );
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            if( asprintf( &psz_header, _("Media: %s"), p_cfg->psz_name ) == -1 )
                psz_header = NULL;
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            if( (p_input = input_CreateThreadExtended( p_vlm, p_media->vod.p_item, psz_header, NULL ) ) )
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            {
                while( !p_input->b_eof && !p_input->b_error )
                    msleep( 100000 );
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                input_StopThread( p_input );
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                vlc_object_release( p_input );
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            }
            free( psz_header );
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            if( p_cfg->vod.psz_mux )
            {
                input_item_t item;
                es_format_t es, *p_es = &es;
                char fourcc[5];
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                sprintf( fourcc, "%4.4s", p_cfg->vod.psz_mux );
                fourcc[0] = tolower(fourcc[0]); fourcc[1] = tolower(fourcc[1]);
                fourcc[2] = tolower(fourcc[2]); fourcc[3] = tolower(fourcc[3]);

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                /* XXX: Don't do it that way, but properly use a new input item ref. */
                item = *p_media->vod.p_item;
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                item.i_es = 1;
                item.es = &p_es;
                es_format_Init( &es, VIDEO_ES, *((int *)fourcc) );

                p_media->vod.p_media =
                    p_vlm->p_vod->pf_media_new( p_vlm->p_vod, p_cfg->psz_name, &item );
            }
            else
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            {
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                p_media->vod.p_media =
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                    p_vlm->p_vod->pf_media_new( p_vlm->p_vod, p_cfg->psz_name, p_media->vod.p_item );
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            }
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        }
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    }
    else
    {
        /* TODO start media if needed */
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    }
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    /* TODO add support of var vlm_media_broadcast/vlm_media_vod */
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    return VLC_SUCCESS;
}
static int vlm_ControlMediaChange( vlm_t *p_vlm, vlm_media_t *p_cfg )
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{
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    vlm_media_sys_t *p_media = vlm_ControlMediaGetById( p_vlm, p_cfg->id );
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    /* */
    if( !p_media || vlm_MediaDescriptionCheck( p_vlm, p_cfg ) )
        return VLC_EGENERIC;
    if( ( p_media->cfg.b_vod && !p_cfg->b_vod ) || ( !p_media->cfg.b_vod && p_cfg->b_vod ) )
        return VLC_EGENERIC;

    if( 0 )
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    {
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        /* TODO check what are the changes being done (stop instance if needed) */
    }
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    vlm_media_Clean( &p_media->cfg );
    vlm_media_Copy( &p_media->cfg, p_cfg );
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    return vlm_OnMediaUpdate( p_vlm, p_media );
}
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static int vlm_ControlMediaAdd( vlm_t *p_vlm, vlm_media_t *p_cfg, int64_t *p_id )
{
    vlm_media_sys_t *p_media;
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    if( vlm_MediaDescriptionCheck( p_vlm, p_cfg ) || vlm_ControlMediaGetByName( p_vlm, p_cfg->psz_name ) )
    {
        msg_Err( p_vlm, "invalid media description" );
        return VLC_EGENERIC;
    }
    /* Check if we need to load the VOD server */
    if( p_cfg->b_vod && !p_vlm->i_vod )
    {
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Rémi Denis-Courmont committed
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        p_vlm->p_vod = vlc_custom_create( VLC_OBJECT(p_vlm), sizeof( vod_t ),
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                                          VLC_OBJECT_GENERIC, "vod server" );
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        vlc_object_attach( p_vlm->p_vod, p_vlm );
        p_vlm->p_vod->p_module = module_Need( p_vlm->p_vod, "vod server", 0, 0 );
        if( !p_vlm->p_vod->p_module )
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        {
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            msg_Err( p_vlm, "cannot find vod server" );
            vlc_object_detach( p_vlm->p_vod );
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            vlc_object_release( p_vlm->p_vod );
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            p_vlm->p_vod = 0;
            return VLC_EGENERIC;
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        }

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        p_vlm->p_vod->p_data = p_vlm;
        p_vlm->p_vod->pf_media_control = vlm_MediaVodControl;
    }
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    p_media = malloc( sizeof( vlm_media_sys_t ) );
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    if( !p_media )
        return VLC_ENOMEM;
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    memset( p_media, 0, sizeof(vlm_media_sys_t) );
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    if( p_cfg->b_vod )
        p_vlm->i_vod++;

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    vlm_media_Copy( &p_media->cfg, p_cfg );
    p_media->cfg.id = p_vlm->i_id++;
    /* FIXME do we do something here if enabled is true ? */
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    p_media->vod.p_item = input_item_New( p_vlm, NULL, NULL );
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    p_media->vod.p_media = NULL;
    TAB_INIT( p_media->i_instance, p_media->instance );
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    /* */
    TAB_APPEND( p_vlm->i_media, p_vlm->media, p_media );
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    if( p_id )
        *p_id = p_media->cfg.id;
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    return vlm_OnMediaUpdate( p_vlm, p_media );
}
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static int vlm_ControlMediaDel( vlm_t *p_vlm, int64_t id )
{
    vlm_media_sys_t *p_media = vlm_ControlMediaGetById( p_vlm, id );
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    if( !p_media )
        return VLC_EGENERIC;
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    while( p_media->i_instance > 0 )
        vlm_ControlInternal( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, p_media->instance[0]->psz_name );
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    if( p_media->cfg.b_vod )
    {
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        p_media->cfg.b_enabled = false;
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        vlm_OnMediaUpdate( p_vlm, p_media );
        p_vlm->i_vod--;
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    }

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    vlm_media_Clean( &p_media->cfg );
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    vlc_gc_decref( p_media->vod.p_item );
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    TAB_REMOVE( p_vlm->i_media, p_vlm->media, p_media );
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    free( p_media );

    /* Check if we need to unload the VOD server */
    if( p_vlm->p_vod && p_vlm->i_vod <= 0 )
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    {
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        module_Unneed( p_vlm->p_vod, p_vlm->p_vod->p_module );
        vlc_object_detach( p_vlm->p_vod );
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        vlc_object_release( p_vlm->p_vod );
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        p_vlm->p_vod = NULL;
    }
    return VLC_SUCCESS;
}
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static int vlm_ControlMediaGets( vlm_t *p_vlm, vlm_media_t ***ppp_dsc, int *pi_dsc )
{
    vlm_media_t **pp_dsc;
    int                     i_dsc;
    int i;
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    TAB_INIT( i_dsc, pp_dsc );
    for( i = 0; i < p_vlm->i_media; i++ )
    {
        vlm_media_t *p_dsc = vlm_media_Duplicate( &p_vlm->media[i]->cfg );
        TAB_APPEND( i_dsc, pp_dsc, p_dsc );
    }
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    *ppp_dsc = pp_dsc;
    *pi_dsc = i_dsc;
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    return VLC_SUCCESS;
}
static int vlm_ControlMediaClear( vlm_t *p_vlm )
{
    while( p_vlm->i_media > 0 )
        vlm_ControlMediaDel( p_vlm, p_vlm->media[0]->cfg.id );
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    return VLC_SUCCESS;
}
static int vlm_ControlMediaGet( vlm_t *p_vlm, int64_t id, vlm_media_t **pp_dsc )
{
    vlm_media_sys_t *p_media = vlm_ControlMediaGetById( p_vlm, id );
    if( !p_media )
        return VLC_EGENERIC;
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    *pp_dsc = vlm_media_Duplicate( &p_media->cfg );
    return VLC_SUCCESS;
}
static int vlm_ControlMediaGetId( vlm_t *p_vlm, const char *psz_name, int64_t *p_id )
{
    vlm_media_sys_t *p_media = vlm_ControlMediaGetByName( p_vlm, psz_name );
    if( !p_media )
        return VLC_EGENERIC;

    *p_id = p_media->cfg.id;
    return VLC_SUCCESS;
}

static vlm_media_instance_sys_t *vlm_ControlMediaInstanceGetByName( vlm_media_sys_t *p_media, const char *psz_id )
{
    int i;

    for( i = 0; i < p_media->i_instance; i++ )
    {
        const char *psz = p_media->instance[i]->psz_name;
        if( ( psz == NULL && psz_id == NULL ) ||
            ( psz && psz_id && !strcmp( psz, psz_id ) ) )
            return p_media->instance[i];
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    }
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    return NULL;
}
static vlm_media_instance_sys_t *vlm_MediaInstanceNew( vlm_t *p_vlm, const char *psz_name )
{
    vlm_media_instance_sys_t *p_instance = malloc( sizeof(vlm_media_instance_sys_t) );
    if( !p_instance )
        return NULL;
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    memset( p_instance, 0, sizeof(vlm_media_instance_sys_t) );

    p_instance->psz_name = NULL;
    if( psz_name )
        p_instance->psz_name = strdup( psz_name );

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    p_instance->p_item = input_item_New( p_vlm, NULL, NULL );
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    p_instance->i_index = 0;
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    p_instance->b_sout_keep = false;
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    p_instance->p_input = NULL;
    p_instance->p_sout = NULL;

    return p_instance;
}
static void vlm_MediaInstanceDelete( vlm_media_instance_sys_t *p_instance )
{
    if( p_instance->p_input )
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    {
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        input_StopThread( p_instance->p_input );
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        p_instance->p_sout = input_DetachSout( p_instance->p_input );
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        vlc_object_release( p_instance->p_input );
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    }
    if( p_instance->p_sout )
        sout_DeleteInstance( p_instance->p_sout );

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    vlc_gc_decref( p_instance->p_item );
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    free( p_instance->psz_name );
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    free( p_instance );
}


static int vlm_ControlMediaInstanceStart( vlm_t *p_vlm, int64_t id, const char *psz_id, int i_input_index, const char *psz_vod_output )
{
    vlm_media_sys_t *p_media = vlm_ControlMediaGetById( p_vlm, id );
    vlm_media_instance_sys_t *p_instance;
    char *psz_log;
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    if( !p_media || !p_media->cfg.b_enabled || p_media->cfg.i_input <= 0 )
        return VLC_EGENERIC;
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    /* TODO support multiple input for VOD with sout-keep ? */
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    if( ( p_media->cfg.b_vod && !psz_vod_output ) || ( !p_media->cfg.b_vod && psz_vod_output ) )
        return VLC_EGENERIC;
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    if( i_input_index < 0 || i_input_index >= p_media->cfg.i_input )
        return VLC_EGENERIC;
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    p_instance = vlm_ControlMediaInstanceGetByName( p_media, psz_id );
    if( !p_instance )
    {
        vlm_media_t *p_cfg = &p_media->cfg;
        int i;
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        p_instance = vlm_MediaInstanceNew( p_vlm, psz_id );
        if( !p_instance )
            return VLC_ENOMEM;
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        if( p_cfg->psz_output != NULL || psz_vod_output != NULL )
        {
            char *psz_buffer;
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            if( asprintf( &psz_buffer, "sout=%s%s%s",
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                      p_cfg->psz_output ? p_cfg->psz_output : "",
                      (p_cfg->psz_output && psz_vod_output) ? ":" : psz_vod_output ? "#" : "",
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                      psz_vod_output ? psz_vod_output : "" ) != -1 )
            {
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                input_item_AddOption( p_instance->p_item, psz_buffer );
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                free( psz_buffer );
            }
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        }

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        for( i = 0; i < p_cfg->i_option; i++ )
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        {
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            if( !strcmp( p_cfg->ppsz_option[i], "sout-keep" ) )
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                p_instance->b_sout_keep = true;
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            else if( !strcmp( p_cfg->ppsz_option[i], "nosout-keep" ) || !strcmp( p_cfg->ppsz_option[i], "no-sout-keep" ) )
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                p_instance->b_sout_keep = false;
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            else
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                input_item_AddOption( p_instance->p_item, p_cfg->ppsz_option[i] );
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        }
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        TAB_APPEND( p_media->i_instance, p_media->instance, p_instance );
    }

    /* Stop old instance */
    if( p_instance->p_input )
    {
        if( p_instance->i_index == i_input_index &&
            !p_instance->p_input->b_eof && !p_instance->p_input->b_error )
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        {
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            if( var_GetInteger( p_instance->p_input, "state" ) == PAUSE_S )
                var_SetInteger( p_instance->p_input, "state",  PLAYING_S );
            return VLC_SUCCESS;
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        }

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        input_StopThread( p_instance->p_input );
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        p_instance->p_sout = input_DetachSout( p_instance->p_input );
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        vlc_object_release( p_instance->p_input );
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        if( !p_instance->b_sout_keep && p_instance->p_sout )
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        {
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            sout_DeleteInstance( p_instance->p_sout );
            p_instance->p_sout = NULL;
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        }
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    }

    /* Start new one */
    p_instance->i_index = i_input_index;
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    input_item_SetURI( p_instance->p_item, p_media->cfg.ppsz_input[p_instance->i_index] ) ;
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    if( asprintf( &psz_log, _("Media: %s"), p_media->cfg.psz_name ) != -1 )
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    {
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        p_instance->p_input = input_CreateThreadExtended( p_vlm, p_instance->p_item, psz_log, p_instance->p_sout );
        if( !p_instance->p_input )
        {
            TAB_REMOVE( p_media->i_instance, p_media->instance, p_instance );
            vlm_MediaInstanceDelete( p_instance );
        }
        free( psz_log );
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    }

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    return VLC_SUCCESS;
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}

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static int vlm_ControlMediaInstanceStop( vlm_t *p_vlm, int64_t id, const char *psz_id )
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{
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    vlm_media_sys_t *p_media = vlm_ControlMediaGetById( p_vlm, id );
    vlm_media_instance_sys_t *p_instance;
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    if( !p_media )
        return VLC_EGENERIC;
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    p_instance = vlm_ControlMediaInstanceGetByName( p_media, psz_id );
    if( !p_instance )
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        return VLC_EGENERIC;

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    TAB_REMOVE( p_media->i_instance, p_media->instance, p_instance );
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    vlm_MediaInstanceDelete( p_instance );
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    return VLC_SUCCESS;
}
static int vlm_ControlMediaInstancePause( vlm_t *p_vlm, int64_t id, const char *psz_id )
{
    vlm_media_sys_t *p_media = vlm_ControlMediaGetById( p_vlm, id );
    vlm_media_instance_sys_t *p_instance;
    int i_state;
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    if( !p_media )
        return VLC_EGENERIC;
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    p_instance = vlm_ControlMediaInstanceGetByName( p_media, psz_id );
    if( !p_instance || !p_instance->p_input )
        return VLC_EGENERIC;
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    /* Toggle pause state */
    i_state = var_GetInteger( p_instance->p_input, "state" );
    if( i_state == PAUSE_S )
        var_SetInteger( p_instance->p_input, "state", PLAYING_S );
    else if( i_state == PLAYING_S )
        var_SetInteger( p_instance->p_input, "state", PAUSE_S );
    return VLC_SUCCESS;
}
static int vlm_ControlMediaInstanceGetTimePosition( vlm_t *p_vlm, int64_t id, const char *psz_id, int64_t *pi_time, double *pd_position )
{
    vlm_media_sys_t *p_media = vlm_ControlMediaGetById( p_vlm, id );
    vlm_media_instance_sys_t *p_instance;