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/*****************************************************************************
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 * libvlc.c: libvlc instances creation and deletion, interfaces handling
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 *****************************************************************************
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 * Copyright (C) 1998-2008 the VideoLAN team
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 * $Id$
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 *
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
 *          Samuel Hocevar <sam@zoy.org>
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 *          Gildas Bazin <gbazin@videolan.org>
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 *          Derk-Jan Hartman <hartman at videolan dot org>
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 *          Rémi Denis-Courmont <rem # 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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 *****************************************************************************/

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/** \file
 * This file contains functions to create and destroy libvlc instances
 */
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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 "control/libvlc_internal.h"
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#include <vlc_input.h>
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#include "modules/modules.h"
#include "config/configuration.h"
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#include <errno.h>                                                 /* ENOMEM */
#include <stdio.h>                                              /* sprintf() */
#include <string.h>
#include <stdlib.h>                                                /* free() */
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#ifndef WIN32
#   include <netinet/in.h>                            /* BSD: struct in_addr */
#endif
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#ifdef HAVE_UNISTD_H
#   include <unistd.h>
#elif defined( WIN32 ) && !defined( UNDER_CE )
#   include <io.h>
#endif
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#ifdef WIN32                       /* optind, getopt(), included in unistd.h */
#   include "extras/getopt.h"
#endif
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#ifdef HAVE_LOCALE_H
#   include <locale.h>
#endif
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#ifdef ENABLE_NLS
# include <libintl.h> /* bindtextdomain */
#endif

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#ifdef HAVE_DBUS
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/* used for one-instance mode */
#   include <dbus/dbus.h>
#endif
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#ifdef HAVE_HAL
#   include <hal/libhal.h>
#endif
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#include <vlc_playlist.h>
#include <vlc_interface.h>
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#include <vlc_aout.h>
#include "audio_output/aout_internal.h"
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#include <vlc_charset.h>
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#include "libvlc.h"
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#include "playlist/playlist_internal.h"
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#include <vlc_vlm.h>
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#ifdef __APPLE__
# include <libkern/OSAtomic.h>
#endif

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#include <assert.h>
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/*****************************************************************************
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 * The evil global variables. We handle them with care, don't worry.
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 *****************************************************************************/
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static unsigned          i_instances = 0;
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#ifndef WIN32
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static bool b_daemon = false;
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#endif
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#undef vlc_gc_init
#undef vlc_hold
#undef vlc_release
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/**
 * Atomically set the reference count to 1.
 * @param p_gc reference counted object
 * @param pf_destruct destruction calback
 * @return p_gc.
 */
void *vlc_gc_init (gc_object_t *p_gc, void (*pf_destruct) (gc_object_t *))
{
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    /* There is no point in using the GC if there is no destructor... */
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    assert (pf_destruct);
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    p_gc->pf_destructor = pf_destruct;

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    p_gc->refs = 1;
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#if defined (__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
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    __sync_synchronize ();
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#elif defined (WIN32) && defined (__GNUC__)
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#elif defined(__APPLE__)
    OSMemoryBarrier ();
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#else
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    /* Nobody else can possibly lock the spin - it's there as a barrier */
    vlc_spin_init (&p_gc->spin);
    vlc_spin_lock (&p_gc->spin);
    vlc_spin_unlock (&p_gc->spin);
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#endif
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    return p_gc;
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}

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/**
 * Atomically increment the reference count.
 * @param p_gc reference counted object
 * @return p_gc.
 */
void *vlc_hold (gc_object_t * p_gc)
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{
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    uintptr_t refs;
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    assert( p_gc );
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    assert ((((uintptr_t)&p_gc->refs) & (sizeof (void *) - 1)) == 0); /* alignment */
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#if defined (__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
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    refs = __sync_add_and_fetch (&p_gc->refs, 1);
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#elif defined (WIN64)
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    refs = InterlockedIncrement64 (&p_gc->refs);
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#elif defined (WIN32)
    refs = InterlockedIncrement (&p_gc->refs);
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#elif defined(__APPLE__)
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    refs = OSAtomicIncrement32Barrier((int*)&p_gc->refs);
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#else
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    vlc_spin_lock (&p_gc->spin);
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    refs = ++p_gc->refs;
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    vlc_spin_unlock (&p_gc->spin);
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#endif
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    assert (refs != 1); /* there had to be a reference already */
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    return p_gc;
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}

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/**
 * Atomically decrement the reference count and, if it reaches zero, destroy.
 * @param p_gc reference counted object.
 */
void vlc_release (gc_object_t *p_gc)
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{
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    unsigned refs;
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    assert( p_gc );
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    assert ((((uintptr_t)&p_gc->refs) & (sizeof (void *) - 1)) == 0); /* alignment */
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#if defined (__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
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    refs = __sync_sub_and_fetch (&p_gc->refs, 1);
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#elif defined (WIN64)
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    refs = InterlockedDecrement64 (&p_gc->refs);
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#elif defined (WIN32)
    refs = InterlockedDecrement (&p_gc->refs);
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#elif defined(__APPLE__)
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    refs = OSAtomicDecrement32Barrier((int*)&p_gc->refs);
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#else
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    vlc_spin_lock (&p_gc->spin);
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    refs = --p_gc->refs;
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    vlc_spin_unlock (&p_gc->spin);
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#endif
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    assert (refs != (uintptr_t)(-1)); /* reference underflow?! */
    if (refs == 0)
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    {
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#if defined (__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
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#elif defined (WIN32) && defined (__GNUC__)
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#elif defined(__APPLE__)
#else
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        vlc_spin_destroy (&p_gc->spin);
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#endif
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        p_gc->pf_destructor (p_gc);
    }
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}

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/*****************************************************************************
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 * Local prototypes
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 *****************************************************************************/
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#if defined( ENABLE_NLS ) && (defined (__APPLE__) || defined (WIN32)) && \
    ( defined( HAVE_GETTEXT ) || defined( HAVE_INCLUDED_GETTEXT ) )
static void SetLanguage   ( char const * );
#endif
static inline int LoadMessages (void);
static int  GetFilenames  ( libvlc_int_t *, int, const char *[] );
static void Help          ( libvlc_int_t *, char const *psz_help_name );
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static void Usage         ( libvlc_int_t *, char const *psz_search );
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static void ListModules   ( libvlc_int_t *, bool );
static void Version       ( void );

#ifdef WIN32
static void ShowConsole   ( bool );
static void PauseConsole  ( void );
#endif
static int  ConsoleWidth  ( void );
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static void InitDeviceValues( libvlc_int_t * );
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static vlc_mutex_t global_lock = VLC_STATIC_MUTEX;
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/**
 * Allocate a libvlc instance, initialize global data if needed
 * It also initializes the threading system
 */
libvlc_int_t * libvlc_InternalCreate( void )
{
    libvlc_int_t *p_libvlc;
    libvlc_priv_t *priv;
    char *psz_env = NULL;

    /* Now that the thread system is initialized, we don't have much, but
     * at least we have variables */
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    vlc_mutex_lock( &global_lock );
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    if( i_instances == 0 )
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    {
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        /* Guess what CPU we have */
        cpu_flags = CPUCapabilities();
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        /* The module bank will be initialized later */
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    }
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    /* Allocate a libvlc instance object */
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    p_libvlc = __vlc_custom_create( NULL, sizeof (*priv),
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                                  VLC_OBJECT_GENERIC, "libvlc" );
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    if( p_libvlc != NULL )
        i_instances++;
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    vlc_mutex_unlock( &global_lock );
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    if( p_libvlc == NULL )
        return NULL;

    priv = libvlc_priv (p_libvlc);
    priv->p_playlist = NULL;
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    priv->p_dialog_provider = NULL;
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    priv->p_vlm = NULL;

    /* Initialize message queue */
    msg_Create( p_libvlc );

    /* Find verbosity from VLC_VERBOSE environment variable */
    psz_env = getenv( "VLC_VERBOSE" );
    if( psz_env != NULL )
        priv->i_verbose = atoi( psz_env );
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    else
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        priv->i_verbose = 3;
#if defined( HAVE_ISATTY ) && !defined( WIN32 )
    priv->b_color = isatty( 2 ); /* 2 is for stderr */
#else
    priv->b_color = false;
#endif

    /* Initialize mutexes */
    vlc_mutex_init( &priv->timer_lock );
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    vlc_cond_init( &priv->exiting );
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    return p_libvlc;
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}

/**
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 * Initialize a libvlc instance
 * This function initializes a previously allocated libvlc instance:
 *  - CPU detection
 *  - gettext initialization
 *  - message queue, module bank and playlist initialization
 *  - configuration and commandline parsing
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 */
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int libvlc_InternalInit( libvlc_int_t *p_libvlc, int i_argc,
                         const char *ppsz_argv[] )
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{
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    libvlc_priv_t *priv = libvlc_priv (p_libvlc);
    char         p_capabilities[200];
    char *       p_tmp = NULL;
    char *       psz_modules = NULL;
    char *       psz_parser = NULL;
    char *       psz_control = NULL;
    bool   b_exit = false;
    int          i_ret = VLC_EEXIT;
    playlist_t  *p_playlist = NULL;
    vlc_value_t  val;
#if defined( ENABLE_NLS ) \
     && ( defined( HAVE_GETTEXT ) || defined( HAVE_INCLUDED_GETTEXT ) )
# if defined (WIN32) || defined (__APPLE__)
    char *       psz_language;
#endif
#endif
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    /* System specific initialization code */
    system_Init( p_libvlc, &i_argc, ppsz_argv );
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    /*
     * Support for gettext
     */
    LoadMessages ();
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    /* Initialize the module bank and load the configuration of the
     * main module. We need to do this at this stage to be able to display
     * a short help if required by the user. (short help == main module
     * options) */
    module_InitBank( p_libvlc );
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    if( config_LoadCmdLine( p_libvlc, &i_argc, ppsz_argv, true ) )
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    {
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        module_EndBank( p_libvlc, false );
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        return VLC_EGENERIC;
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    }

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    priv->i_verbose = config_GetInt( p_libvlc, "verbose" );
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    /* Announce who we are - Do it only for first instance ? */
    msg_Dbg( p_libvlc, "%s", COPYRIGHT_MESSAGE );
    msg_Dbg( p_libvlc, "libvlc was configured with %s", CONFIGURE_LINE );
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    /*xgettext: Translate "C" to the language code: "fr", "en_GB", "nl", "ru"... */
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    msg_Dbg( p_libvlc, "translation test: code is \"%s\"", _("C") );
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    /* Check for short help option */
    if( config_GetInt( p_libvlc, "help" ) > 0 )
    {
        Help( p_libvlc, "help" );
        b_exit = true;
        i_ret = VLC_EEXITSUCCESS;
    }
    /* Check for version option */
    else if( config_GetInt( p_libvlc, "version" ) > 0 )
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    {
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        Version();
        b_exit = true;
        i_ret = VLC_EEXITSUCCESS;
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    }

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    /* Check for plugins cache options */
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    bool b_cache_delete = config_GetInt( p_libvlc, "reset-plugins-cache" ) > 0;
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    /* Check for daemon mode */
#ifndef WIN32
    if( config_GetInt( p_libvlc, "daemon" ) > 0 )
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    {
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#ifdef HAVE_DAEMON
        char *psz_pidfile = NULL;

        if( daemon( 1, 0) != 0 )
        {
            msg_Err( p_libvlc, "Unable to fork vlc to daemon mode" );
            b_exit = true;
        }
        b_daemon = true;

        /* lets check if we need to write the pidfile */
        psz_pidfile = config_GetPsz( p_libvlc, "pidfile" );
        if( psz_pidfile != NULL )
        {
            FILE *pidfile;
            pid_t i_pid = getpid ();
            msg_Dbg( p_libvlc, "PID is %d, writing it to %s",
                               i_pid, psz_pidfile );
            pidfile = utf8_fopen( psz_pidfile,"w" );
            if( pidfile != NULL )
            {
                utf8_fprintf( pidfile, "%d", (int)i_pid );
                fclose( pidfile );
            }
            else
            {
                msg_Err( p_libvlc, "cannot open pid file for writing: %s (%m)",
                         psz_pidfile );
            }
        }
        free( psz_pidfile );

#else
        pid_t i_pid;
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        if( ( i_pid = fork() ) < 0 )
        {
            msg_Err( p_libvlc, "unable to fork vlc to daemon mode" );
            b_exit = true;
        }
        else if( i_pid )
        {
            /* This is the parent, exit right now */
            msg_Dbg( p_libvlc, "closing parent process" );
            b_exit = true;
            i_ret = VLC_EEXITSUCCESS;
        }
        else
        {
            /* We are the child */
            msg_Dbg( p_libvlc, "daemon spawned" );
            close( STDIN_FILENO );
            close( STDOUT_FILENO );
            close( STDERR_FILENO );

            b_daemon = true;
        }
#endif
    }
#endif
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    if( b_exit )
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    {
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        module_EndBank( p_libvlc, false );
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        return i_ret;
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    }

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    /* Check for translation config option */
#if defined( ENABLE_NLS ) \
     && ( defined( HAVE_GETTEXT ) || defined( HAVE_INCLUDED_GETTEXT ) )
# if defined (WIN32) || defined (__APPLE__)
    /* This ain't really nice to have to reload the config here but it seems
     * the only way to do it. */
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    if( !config_GetInt( p_libvlc, "ignore-config" ) )
        config_LoadConfigFile( p_libvlc, "main" );
    config_LoadCmdLine( p_libvlc, &i_argc, ppsz_argv, true );
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    priv->i_verbose = config_GetInt( p_libvlc, "verbose" );
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    /* Check if the user specified a custom language */
    psz_language = config_GetPsz( p_libvlc, "language" );
    if( psz_language && *psz_language && strcmp( psz_language, "auto" ) )
    {
        /* Reset the default domain */
        SetLanguage( psz_language );

        /* Translate "C" to the language code: "fr", "en_GB", "nl", "ru"... */
        msg_Dbg( p_libvlc, "translation test: code is \"%s\"", _("C") );

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        module_EndBank( p_libvlc, false );
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        module_InitBank( p_libvlc );
        if( !config_GetInt( p_libvlc, "ignore-config" ) )
            config_LoadConfigFile( p_libvlc, "main" );
        config_LoadCmdLine( p_libvlc, &i_argc, ppsz_argv, true );
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        priv->i_verbose = config_GetInt( p_libvlc, "verbose" );
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    }
    free( psz_language );
# endif
#endif

    /*
     * Load the builtins and plugins into the module_bank.
     * We have to do it before config_Load*() because this also gets the
     * list of configuration options exported by each module and loads their
     * default values.
     */
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    module_LoadPlugins( p_libvlc, b_cache_delete );
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    if( p_libvlc->b_die )
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    {
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        b_exit = true;
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    }

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    size_t module_count;
    module_t **list = module_list_get( &module_count );
    module_list_free( list );
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    msg_Dbg( p_libvlc, "module bank initialized (%zu modules)", module_count );
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    /* Check for help on modules */
    if( (p_tmp = config_GetPsz( p_libvlc, "module" )) )
    {
        Help( p_libvlc, p_tmp );
        free( p_tmp );
        b_exit = true;
        i_ret = VLC_EEXITSUCCESS;
    }
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    /* Check for full help option */
    else if( config_GetInt( p_libvlc, "full-help" ) > 0 )
    {
        config_PutInt( p_libvlc, "advanced", 1);
        config_PutInt( p_libvlc, "help-verbose", 1);
        Help( p_libvlc, "full-help" );
        b_exit = true;
        i_ret = VLC_EEXITSUCCESS;
    }
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    /* Check for long help option */
    else if( config_GetInt( p_libvlc, "longhelp" ) > 0 )
    {
        Help( p_libvlc, "longhelp" );
        b_exit = true;
        i_ret = VLC_EEXITSUCCESS;
    }
    /* Check for module list option */
    else if( config_GetInt( p_libvlc, "list" ) > 0 )
    {
        ListModules( p_libvlc, false );
        b_exit = true;
        i_ret = VLC_EEXITSUCCESS;
    }
    else if( config_GetInt( p_libvlc, "list-verbose" ) > 0 )
    {
        ListModules( p_libvlc, true );
        b_exit = true;
        i_ret = VLC_EEXITSUCCESS;
    }
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    /* Check for config file options */
    if( !config_GetInt( p_libvlc, "ignore-config" ) )
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    {
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        if( config_GetInt( p_libvlc, "reset-config" ) > 0 )
        {
            config_ResetAll( p_libvlc );
            config_LoadCmdLine( p_libvlc, &i_argc, ppsz_argv, true );
            config_SaveConfigFile( p_libvlc, NULL );
        }
        if( config_GetInt( p_libvlc, "save-config" ) > 0 )
        {
            config_LoadConfigFile( p_libvlc, NULL );
            config_LoadCmdLine( p_libvlc, &i_argc, ppsz_argv, true );
            config_SaveConfigFile( p_libvlc, NULL );
        }
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    }

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    if( b_exit )
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    {
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        module_EndBank( p_libvlc, true );
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        return i_ret;
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    }
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    /*
     * Init device values
     */
    InitDeviceValues( p_libvlc );

    /*
     * Override default configuration with config file settings
     */
    if( !config_GetInt( p_libvlc, "ignore-config" ) )
        config_LoadConfigFile( p_libvlc, NULL );

    /*
     * Override configuration with command line settings
     */
    if( config_LoadCmdLine( p_libvlc, &i_argc, ppsz_argv, false ) )
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    {
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#ifdef WIN32
        ShowConsole( false );
        /* Pause the console because it's destroyed when we exit */
        fprintf( stderr, "The command line options couldn't be loaded, check "
                 "that they are valid.\n" );
        PauseConsole();
#endif
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        module_EndBank( p_libvlc, true );
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        return VLC_EGENERIC;
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    }
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    priv->i_verbose = config_GetInt( p_libvlc, "verbose" );
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    /*
     * System specific configuration
     */
    system_Configure( p_libvlc, &i_argc, ppsz_argv );
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/* FIXME: could be replaced by using Unix sockets */
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#ifdef HAVE_DBUS
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    dbus_threads_init_default();
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    if( config_GetInt( p_libvlc, "one-instance" ) > 0
        || ( config_GetInt( p_libvlc, "one-instance-when-started-from-file" )
             && config_GetInt( p_libvlc, "started-from-file" ) ) )
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    {
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        /* Initialise D-Bus interface, check for other instances */
        DBusConnection  *p_conn = NULL;
        DBusError       dbus_error;

        dbus_error_init( &dbus_error );

        /* connect to the session bus */
        p_conn = dbus_bus_get( DBUS_BUS_SESSION, &dbus_error );
        if( !p_conn )
        {
            msg_Err( p_libvlc, "Failed to connect to D-Bus session daemon: %s",
                    dbus_error.message );
            dbus_error_free( &dbus_error );
        }
        else
        {
            /* check if VLC is available on the bus
             * if not: D-Bus control is not enabled on the other
             * instance and we can't pass MRLs to it */
            DBusMessage *p_test_msg = NULL;
            DBusMessage *p_test_reply = NULL;
            p_test_msg =  dbus_message_new_method_call(
                    "org.mpris.vlc", "/",
                    "org.freedesktop.MediaPlayer", "Identity" );
            /* block until a reply arrives */
            p_test_reply = dbus_connection_send_with_reply_and_block(
                    p_conn, p_test_msg, -1, &dbus_error );
            dbus_message_unref( p_test_msg );
            if( p_test_reply == NULL )
            {
                dbus_error_free( &dbus_error );
                msg_Dbg( p_libvlc, "No Media Player is running. "
                        "Continuing normally." );
            }
            else
            {
                int i_input;
                DBusMessage* p_dbus_msg = NULL;
                DBusMessageIter dbus_args;
                DBusPendingCall* p_dbus_pending = NULL;
                dbus_bool_t b_play;

                dbus_message_unref( p_test_reply );
                msg_Warn( p_libvlc, "Another Media Player is running. Exiting");

                for( i_input = optind;i_input < i_argc;i_input++ )
                {
                    msg_Dbg( p_libvlc, "Adds %s to the running Media Player",
                            ppsz_argv[i_input] );

                    p_dbus_msg = dbus_message_new_method_call(
                            "org.mpris.vlc", "/TrackList",
                            "org.freedesktop.MediaPlayer", "AddTrack" );

                    if ( NULL == p_dbus_msg )
                    {
                        msg_Err( p_libvlc, "D-Bus problem" );
                        system_End( p_libvlc );
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                        exit( 1 );
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                    }

                    /* append MRLs */
                    dbus_message_iter_init_append( p_dbus_msg, &dbus_args );
                    if ( !dbus_message_iter_append_basic( &dbus_args,
                                DBUS_TYPE_STRING, &ppsz_argv[i_input] ) )
                    {
                        dbus_message_unref( p_dbus_msg );
                        system_End( p_libvlc );
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                        exit( 1 );
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                    }
                    b_play = TRUE;
                    if( config_GetInt( p_libvlc, "playlist-enqueue" ) > 0 )
                        b_play = FALSE;
                    if ( !dbus_message_iter_append_basic( &dbus_args,
                                DBUS_TYPE_BOOLEAN, &b_play ) )
                    {
                        dbus_message_unref( p_dbus_msg );
                        system_End( p_libvlc );
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                        exit( 1 );
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                    }

                    /* send message and get a handle for a reply */
                    if ( !dbus_connection_send_with_reply ( p_conn,
                                p_dbus_msg, &p_dbus_pending, -1 ) )
                    {
                        msg_Err( p_libvlc, "D-Bus problem" );
                        dbus_message_unref( p_dbus_msg );
                        system_End( p_libvlc );
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                        exit( 1 );
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                    }

                    if ( NULL == p_dbus_pending )
                    {
                        msg_Err( p_libvlc, "D-Bus problem" );
                        dbus_message_unref( p_dbus_msg );
                        system_End( p_libvlc );
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                        exit( 1 );
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                    }
                    dbus_connection_flush( p_conn );
                    dbus_message_unref( p_dbus_msg );
                    /* block until we receive a reply */
                    dbus_pending_call_block( p_dbus_pending );
                    dbus_pending_call_unref( p_dbus_pending );
                } /* processes all command line MRLs */

                /* bye bye */
                system_End( p_libvlc );
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                exit( 0 );
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            }
        }
        /* we unreference the connection when we've finished with it */
        if( p_conn ) dbus_connection_unref( p_conn );
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    }
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#endif
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    /*
     * Message queue options
     */
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    char * psz_verbose_objects = config_GetPsz( p_libvlc, "verbose-objects" );
    if( psz_verbose_objects )
    {
        char * psz_object, * iter = psz_verbose_objects;
        while( (psz_object = strsep( &iter, "," )) )
        {
            switch( psz_object[0] )
            {
                printf("%s\n", psz_object+1);
                case '+': msg_EnableObjectPrinting(p_libvlc, psz_object+1); break;
                case '-': msg_DisableObjectPrinting(p_libvlc, psz_object+1); break;
                default:
                    msg_Err( p_libvlc, "verbose-objects usage: \n"
                            "--verbose-objects=+printthatobject,"
                            "-dontprintthatone\n"
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                            "(keyword 'all' to applies to all objects)");
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                    free( psz_verbose_objects );
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                    /* FIXME: leaks!!!! */
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                    return VLC_EGENERIC;
            }
        }
        free( psz_verbose_objects );
    }
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    /* Last chance to set the verbosity. Once we start interfaces and other
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     * threads, verbosity becomes read-only. */
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    var_Create( p_libvlc, "verbose", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    if( config_GetInt( p_libvlc, "quiet" ) > 0 )
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    {
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        var_SetInteger( p_libvlc, "verbose", -1 );
        priv->i_verbose = -1;
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    }
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    vlc_threads_setup( p_libvlc );
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    if( priv->b_color )
        priv->b_color = config_GetInt( p_libvlc, "color" ) > 0;

    if( !config_GetInt( p_libvlc, "fpu" ) )
        cpu_flags &= ~CPU_CAPABILITY_FPU;

#if defined( __i386__ ) || defined( __x86_64__ )
    if( !config_GetInt( p_libvlc, "mmx" ) )
        cpu_flags &= ~CPU_CAPABILITY_MMX;
    if( !config_GetInt( p_libvlc, "3dn" ) )
        cpu_flags &= ~CPU_CAPABILITY_3DNOW;
    if( !config_GetInt( p_libvlc, "mmxext" ) )
        cpu_flags &= ~CPU_CAPABILITY_MMXEXT;
    if( !config_GetInt( p_libvlc, "sse" ) )
        cpu_flags &= ~CPU_CAPABILITY_SSE;
    if( !config_GetInt( p_libvlc, "sse2" ) )
        cpu_flags &= ~CPU_CAPABILITY_SSE2;
#endif
#if defined( __powerpc__ ) || defined( __ppc__ ) || defined( __ppc64__ )
    if( !config_GetInt( p_libvlc, "altivec" ) )
        cpu_flags &= ~CPU_CAPABILITY_ALTIVEC;
#endif
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#define PRINT_CAPABILITY( capability, string )                              \
    if( vlc_CPU() & capability )                                            \
    {                                                                       \
        strncat( p_capabilities, string " ",                                \
                 sizeof(p_capabilities) - strlen(p_capabilities) );         \
        p_capabilities[sizeof(p_capabilities) - 1] = '\0';                  \
    }
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    p_capabilities[0] = '\0';
    PRINT_CAPABILITY( CPU_CAPABILITY_486, "486" );
    PRINT_CAPABILITY( CPU_CAPABILITY_586, "586" );
    PRINT_CAPABILITY( CPU_CAPABILITY_PPRO, "Pentium Pro" );
    PRINT_CAPABILITY( CPU_CAPABILITY_MMX, "MMX" );
    PRINT_CAPABILITY( CPU_CAPABILITY_3DNOW, "3DNow!" );
    PRINT_CAPABILITY( CPU_CAPABILITY_MMXEXT, "MMXEXT" );
    PRINT_CAPABILITY( CPU_CAPABILITY_SSE, "SSE" );
    PRINT_CAPABILITY( CPU_CAPABILITY_SSE2, "SSE2" );
    PRINT_CAPABILITY( CPU_CAPABILITY_ALTIVEC, "AltiVec" );
    PRINT_CAPABILITY( CPU_CAPABILITY_FPU, "FPU" );
    msg_Dbg( p_libvlc, "CPU has capabilities %s", p_capabilities );

    /*
     * Choose the best memcpy module
     */
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    priv->p_memcpy_module = module_need( p_libvlc, "memcpy", "$memcpy", false );
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    priv->b_stats = config_GetInt( p_libvlc, "stats" ) > 0;
    priv->i_timers = 0;
    priv->pp_timers = NULL;

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    priv->i_last_input_id = 0; /* Not very safe, should be removed */

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    /*
     * Initialize hotkey handling
     */
    var_Create( p_libvlc, "key-pressed", VLC_VAR_INTEGER );
    var_Create( p_libvlc, "key-action", VLC_VAR_INTEGER );
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    {
        struct hotkey *p_keys =
            malloc( (libvlc_actions_count + 1) * sizeof (*p_keys) );

	/* Initialize from configuration */
        for( size_t i = 0; i < libvlc_actions_count; i++ )
        {
            p_keys[i].psz_action = libvlc_actions[i].name;
            p_keys[i].i_key = config_GetInt( p_libvlc,
                                             libvlc_actions[i].name );
            p_keys[i].i_action = libvlc_actions[i].value;
        }
        p_keys[libvlc_actions_count].psz_action = NULL;
        p_keys[libvlc_actions_count].i_key = 0;
        p_keys[libvlc_actions_count].i_action = 0;
        p_libvlc->p_hotkeys = p_keys;
        var_AddCallback( p_libvlc, "key-pressed", vlc_key_to_action,
                         p_keys );
    }
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    /* variables for signalling creation of new files */
    var_Create( p_libvlc, "snapshot-file", VLC_VAR_STRING );
    var_Create( p_libvlc, "record-file", VLC_VAR_STRING );

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    /* Initialize playlist and get commandline files */
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    p_playlist = playlist_Create( VLC_OBJECT(p_libvlc) );
    if( !p_playlist )
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    {
        msg_Err( p_libvlc, "playlist initialization failed" );
        if( priv->p_memcpy_module != NULL )
        {
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            module_unneed( p_libvlc, priv->p_memcpy_module );
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        }
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        module_EndBank( p_libvlc, true );
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        return VLC_EGENERIC;
    }
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    playlist_Activate( p_playlist );
    vlc_object_attach( p_playlist, p_libvlc );
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    /* Add service discovery modules */
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    psz_modules = config_GetPsz( p_playlist, "services-discovery" );
    if( psz_modules && *psz_modules )
    {
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        char *p = psz_modules, *m;
        while( ( m = strsep( &p, " :," ) ) != NULL )
            playlist_ServicesDiscoveryAdd( p_playlist, m );
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    }
    free( psz_modules );
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#ifdef ENABLE_VLM
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    /* Initialize VLM if vlm-conf is specified */
    psz_parser = config_GetPsz( p_libvlc, "vlm-conf" );
    if( psz_parser && *psz_parser )
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    {
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        priv->p_vlm = vlm_New( p_libvlc );
        if( !priv->p_vlm )
            msg_Err( p_libvlc, "VLM initialization failed" );
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    }
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    free( psz_parser );
#endif
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    /*
     * Load background interfaces
     */
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    /* Create volume callback system. (this variable must be created before
       all interfaces as they can use it) */
    var_Create( p_libvlc, "volume-change", VLC_VAR_BOOL );

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    psz_modules = config_GetPsz( p_libvlc, "extraintf" );
    psz_control = config_GetPsz( p_libvlc, "control" );
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    if( psz_modules && *psz_modules && psz_control && *psz_control )
    {
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        char* psz_tmp;
        if( asprintf( &psz_tmp, "%s:%s", psz_modules, psz_control ) != -1 )
        {
            free( psz_modules );
            psz_modules = psz_tmp;
        }
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    }
    else if( psz_control && *psz_control )
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    {
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        free( psz_modules );
        psz_modules = strdup( psz_control );
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    }

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    psz_parser = psz_modules;
    while ( psz_parser && *psz_parser )
    {
        char *psz_module, *psz_temp;
        psz_module = psz_parser;
        psz_parser = strchr( psz_module, ':' );
        if ( psz_parser )
        {
            *psz_parser = '\0';
            psz_parser++;
        }
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        if( asprintf( &psz_temp, "%s,none", psz_module ) != -1)
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        {
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            intf_Create( p_libvlc, psz_temp );
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            free( psz_temp );
        }
    }
    free( psz_modules );
    free( psz_control );

    /*
     * Always load the hotkeys interface if it exists
     */
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    intf_Create( p_libvlc, "hotkeys,none" );
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#ifdef HAVE_DBUS
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    /* loads dbus control interface if in one-instance mode
     * we do it only when playlist exists, because dbus module needs it */
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    if( config_GetInt( p_libvlc, "one-instance" ) > 0
        || ( config_GetInt( p_libvlc, "one-instance-when-started-from-file" )
             && config_GetInt( p_libvlc, "started-from-file" ) ) )
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        intf_Create( p_libvlc, "dbus,none" );
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    /* Prevents the power management daemon from suspending the system
     * when VLC is active */
    if( config_GetInt( p_libvlc, "inhibit" ) > 0 )
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        intf_Create( p_libvlc, "inhibit,none" );
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#endif
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    /*
     * If needed, load the Xscreensaver interface
     * Currently, only for X
     */
#ifdef HAVE_X11_XLIB_H
    if( config_GetInt( p_libvlc, "disable-screensaver" ) )
    {
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        intf_Create( p_libvlc, "screensaver,none" );
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    }
#endif
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    if( (config_GetInt( p_libvlc, "file-logging" ) > 0) &&
        !config_GetInt( p_libvlc, "syslog" ) )
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    {
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        intf_Create( p_libvlc, "logger,none" );
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    }
#ifdef HAVE_SYSLOG_H
    if( config_GetInt( p_libvlc, "syslog" ) > 0 )
    {
        char *logmode = var_CreateGetString( p_libvlc, "logmode" );
        var_SetString( p_libvlc, "logmode", "syslog" );
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        intf_Create( p_libvlc, "logger,none" );
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        if( logmode )
        {
            var_SetString( p_libvlc, "logmode", logmode );
            free( logmode );
        }
        else
            var_Destroy( p_libvlc, "logmode" );
    }
#endif

    if( config_GetInt( p_libvlc, "network-synchronisation") > 0 )
    {
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        intf_Create( p_libvlc, "netsync,none" );
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    }
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#ifdef WIN32
    if( config_GetInt( p_libvlc, "prefer-system-codecs") > 0 )
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    {
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        char *psz_codecs = config_GetPsz( p_playlist, "codec" );
        if( psz_codecs )
        {
            char *psz_morecodecs;
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            if( asprintf(&psz_morecodecs, "%s,dmo,quicktime", psz_codecs) != -1 )
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            {
                config_PutPsz( p_libvlc, "codec", psz_morecodecs);
                free( psz_morecodecs );
            }
        }
        else
            config_PutPsz( p_libvlc, "codec", "dmo,quicktime");
        free( psz_codecs );
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    }
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#endif
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    var_Create( p_libvlc, "drawable-view-top", VLC_VAR_INTEGER );
    var_Create( p_libvlc, "drawable-view-left", VLC_VAR_INTEGER );
    var_Create( p_libvlc, "drawable-view-bottom", VLC_VAR_INTEGER );
    var_Create( p_libvlc, "drawable-view-right", VLC_VAR_INTEGER );
    var_Create( p_libvlc, "drawable-clip-top", VLC_VAR_INTEGER );
    var_Create( p_libvlc, "drawable-clip-left", VLC_VAR_INTEGER );
    var_Create( p_libvlc, "drawable-clip-bottom", VLC_VAR_INTEGER );
    var_Create( p_libvlc, "drawable-clip-right", VLC_VAR_INTEGER );


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    /* Create a variable for showing the fullscreen interface from hotkeys */
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    var_Create( p_libvlc, "intf-show", VLC_VAR_BOOL );
    var_SetBool( p_libvlc, "intf-show", true );

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    /* Create a variable for showing the right click menu */
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    var_Create( p_libvlc, "intf-popupmenu", VLC_VAR_BOOL );
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    /*
     * Get input filenames given as commandline arguments
     */
    GetFilenames( p_libvlc, i_argc, ppsz_argv );

    /*
     * Get --open argument
     */
    var_Create( p_libvlc, "open", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Get( p_libvlc, "open", &val );
    if ( val.psz_string != NULL && *val.psz_string )
    {
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        playlist_t *p_playlist = pl_Hold( p_libvlc );
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        playlist_AddExt( p_playlist, val.psz_string, NULL, PLAYLIST_INSERT, 0,
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                         -1, 0, NULL, 0, true, pl_Unlocked );
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        pl_Release( p_libvlc );
    }
    free( val.psz_string );
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    return VLC_SUCCESS;
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}

/**
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 * Cleanup a libvlc instance. The instance is not completely deallocated
 * \param p_libvlc the instance to clean
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 */
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void libvlc_InternalCleanup( libvlc_int_t *p_libvlc )
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{
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    libvlc_priv_t *priv = libvlc_priv (p_libvlc);
    playlist_t    *p_playlist = priv->p_playlist;

    /* Deactivate the playlist */
    msg_Dbg( p_libvlc, "deactivating the playlist" );
    playlist_Deactivate( p_playlist );

    /* Remove all services discovery */
    msg_Dbg( p_libvlc, "removing all services discovery tasks" );
    playlist_ServicesDiscoveryKillAll( p_playlist );
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    /* Ask the interfaces to stop and destroy them */
    msg_Dbg( p_libvlc, "removing all interfaces" );
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    libvlc_Quit( p_libvlc );
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    intf_DestroyAll( p_libvlc );
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#ifdef ENABLE_VLM
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    /* Destroy VLM if created in libvlc_InternalInit */
    if( priv->p_vlm )
    {
        vlm_Delete( priv->p_vlm );
    }
#endif

    /* Free playlist */
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    /* Any thread still running must not assume pl_Hold() succeeds. */
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    msg_Dbg( p_libvlc, "removing playlist" );
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    libvlc_priv(p_playlist->p_libvlc)->p_playlist = NULL;
    barrier();  /* FIXME is that correct ? */

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    vlc_object_release( p_playlist );
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    stats_TimersDumpAll( p_libvlc );
    stats_TimersCleanAll( p_libvlc );

    msg_Dbg( p_libvlc, "removing stats" );

#ifndef WIN32
    char* psz_pidfile = NULL;

    if( b_daemon )
    {
        psz_pidfile = config_GetPsz( p_libvlc, "pidfile" );
        if( psz_pidfile != NULL )
        {
            msg_Dbg( p_libvlc, "removing pid file %s", psz_pidfile );
            if( unlink( psz_pidfile ) == -1 )
            {
                msg_Dbg( p_libvlc, "removing pid file %s: %m",
                        psz_pidfile );
            }
        }
        free( psz_pidfile );
    }
#endif

    if( priv->p_memcpy_module )
    {
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        module_unneed( p_libvlc, priv->p_memcpy_module );
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        priv->p_memcpy_module = NULL;
    }

    /* Free module bank. It is refcounted, so we call this each time  */
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    module_EndBank( p_libvlc, true );
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    var_DelCallback( p_libvlc, "key-pressed", vlc_key_to_action,
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                     (void *)p_libvlc->p_hotkeys );
    free( (void *)p_libvlc->p_hotkeys );
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}

/**
 * Destroy everything.
 * This function requests the running threads to finish, waits for their
 * termination, and destroys their structure.
 * It stops the thread systems: no instance can run after this has run
 * \param p_libvlc the instance to destroy
 */
void libvlc_InternalDestroy( libvlc_int_t *p_libvlc )
{
    libvlc_priv_t *priv = libvlc_priv( p_libvlc );
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    vlc_mutex_lock( &global_lock );
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    i_instances--;

    if( i_instances == 0 )
    {
        /* System specific cleaning code */
        system_End( p_libvlc );
    }
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    vlc_mutex_unlock( &global_lock );
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    msg_Destroy( p_libvlc );

    /* Destroy mutexes */
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    vlc_cond_destroy( &priv->exiting );
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    vlc_mutex_destroy( &priv->timer_lock );

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#ifndef NDEBUG /* Hack to dump leaked objects tree */
    if( vlc_internals( p_libvlc )->i_refcount > 1 )
        while( vlc_internals( p_libvlc )->i_refcount > 0 )
            vlc_object_release( p_libvlc );
#endif

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    assert( vlc_internals( p_libvlc )->i_refcount == 1 );
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    vlc_object_release( p_libvlc );
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}

/**
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 * Add an interface plugin and run it
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 */
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int libvlc_InternalAddIntf( libvlc_int_t *p_libvlc, char const *psz_module )
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{
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    if( !p_libvlc )
        return VLC_EGENERIC;

    if( !psz_module ) /* requesting the default interface */
    {
        char *psz_interface = config_GetPsz( p_libvlc, "intf" );
        if( !psz_interface || !*psz_interface ) /* "intf" has not been set */
        {
#ifndef WIN32
            if( b_daemon )
                 /* Daemon mode hack.
                  * We prefer the dummy interface if none is specified. */
                psz_module = "dummy";
            else
#endif
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                msg_Info( p_libvlc, "%s",
                          _("Running vlc with the default interface. "
                            "Use 'cvlc' to use vlc without interface.") );
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        }
        free( psz_interface );
    }

    /* Try to create the interface */
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    if( intf_Create( p_libvlc, psz_module ? psz_module : "$intf" ) )
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    {
        msg_Err( p_libvlc, "interface \"%s\" initialization failed",
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                 psz_module ? psz_module : "default" );
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        return VLC_EGENERIC;
    }
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    return VLC_SUCCESS;
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}
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static vlc_mutex_t exit_lock = VLC_STATIC_MUTEX;

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/**
 * Waits until the LibVLC instance gets an exit signal. Normally, this happens
 * when the user "exits" an interface plugin.
 */
void libvlc_InternalWait( libvlc_int_t *p_libvlc )
{
    libvlc_priv_t *priv = libvlc_priv( p_libvlc );

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    vlc_mutex_lock( &exit_lock );
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    while( vlc_object_alive( p_libvlc ) )
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        vlc_cond_wait( &priv->exiting, &exit_lock );
    vlc_mutex_unlock( &exit_lock );
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}

/**
 * Posts an exit signal to LibVLC instance. This will normally initiate the
 * cleanup and destroy process. It should only be called on behalf of the user.
 */
void libvlc_Quit( libvlc_int_t *p_libvlc )
{
    libvlc_priv_t *priv = libvlc_priv( p_libvlc );

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    vlc_mutex_lock( &exit_lock );
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    vlc_object_kill( p_libvlc );
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    vlc_cond_signal( &priv->exiting );
    vlc_mutex_unlock( &exit_lock );
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}

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#if defined( ENABLE_NLS ) && (defined (__APPLE__) || defined (WIN32)) && \
    ( defined( HAVE_GETTEXT ) || defined( HAVE_INCLUDED_GETTEXT ) )
/*****************************************************************************
 * SetLanguage: set the interface language.
 *****************************************************************************
 * We set the LC_MESSAGES locale category for interface messages and buttons,
 * as well as the LC_CTYPE category for string sorting and possible wide
 * character support.
 *****************************************************************************/
static void SetLanguage ( const char *psz_lang )
{
#ifdef __APPLE__
    /* I need that under Darwin, please check it doesn't disturb
     * other platforms. --Meuuh */
    setenv( "LANG", psz_lang, 1 );

#else
    /* We set LC_ALL manually because it is the only way to set
     * the language at runtime under eg. Windows. Beware that this
     * makes the environment unconsistent when libvlc is unloaded and
     * should probably be moved to a safer place like vlc.c. */
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    static char psz_lcall[20];
    snprintf( psz_lcall, 19, "LC_ALL=%s", psz_lang );
    psz_lcall[19] = '\0';
    putenv( psz_lcall );
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#endif

    setlocale( LC_ALL, psz_lang );
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}
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#endif
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static inline int LoadMessages (void)
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{
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#if defined( ENABLE_NLS ) \
     && ( defined( HAVE_GETTEXT ) || defined( HAVE_INCLUDED_GETTEXT ) )
    /* Specify where to find the locales for current domain */
#if !defined( __APPLE__ ) && !defined( WIN32 ) && !defined( SYS_BEOS )
    static const char psz_path[] = LOCALEDIR;
#else
    char psz_path[1024];
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    if (snprintf (psz_path, sizeof (psz_path), "%s" DIR_SEP "%s",
                  config_GetDataDir(), "locale")
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                     >= (int)sizeof (psz_path))
        return -1;

#endif
    if (bindtextdomain (PACKAGE_NAME, psz_path) == NULL)
    {
        fprintf (stderr, "Warning: cannot bind text domain "PACKAGE_NAME
                         " to directory %s\n", psz_path);
        return -1;