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/*****************************************************************************
 * xcommon.c: Functions common to the X11 and XVideo plugins
 *****************************************************************************
 * Copyright (C) 1998-2001 VideoLAN
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 * $Id$
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 *
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
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 *          Sam Hocevar <sam@zoy.org>
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 *          David Kennedy <dkennedy@tinytoad.com>
 *          Gildas Bazin <gbazin@netcourrier.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <errno.h>                                                 /* ENOMEM */
#include <stdlib.h>                                                /* free() */
#include <string.h>                                            /* strerror() */

#include <vlc/vlc.h>
#include <vlc/intf.h>
#include <vlc/vout.h>
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#include <vlc_keys.h>
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#ifdef HAVE_MACHINE_PARAM_H
    /* BSD */
#   include <machine/param.h>
#   include <sys/types.h>                                  /* typedef ushort */
#   include <sys/ipc.h>
#endif

#ifndef WIN32
#   include <netinet/in.h>                            /* BSD: struct in_addr */
#endif

#ifdef HAVE_SYS_SHM_H
#   include <sys/shm.h>                                /* shmget(), shmctl() */
#endif

#include <X11/Xlib.h>
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#include <X11/Xmd.h>
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#include <X11/Xutil.h>
#include <X11/keysym.h>
#ifdef HAVE_SYS_SHM_H
#   include <X11/extensions/XShm.h>
#endif
#ifdef DPMSINFO_IN_DPMS_H
#   include <X11/extensions/dpms.h>
#endif

#ifdef MODULE_NAME_IS_xvideo
#   include <X11/extensions/Xv.h>
#   include <X11/extensions/Xvlib.h>
#endif

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#ifdef HAVE_XINERAMA
#   include <X11/extensions/Xinerama.h>
#endif

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#include "xcommon.h"

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
int  E_(Activate)   ( vlc_object_t * );
void E_(Deactivate) ( vlc_object_t * );

static int  InitVideo      ( vout_thread_t * );
static void EndVideo       ( vout_thread_t * );
static void DisplayVideo   ( vout_thread_t *, picture_t * );
static int  ManageVideo    ( vout_thread_t * );
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static int  Control        ( vout_thread_t *, int, va_list );
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static int  InitDisplay    ( vout_thread_t * );

static int  CreateWindow   ( vout_thread_t *, x11_window_t * );
static void DestroyWindow  ( vout_thread_t *, x11_window_t * );

static int  NewPicture     ( vout_thread_t *, picture_t * );
static void FreePicture    ( vout_thread_t *, picture_t * );

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static IMAGE_TYPE *CreateImage    ( vout_thread_t *,
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                                    Display *, EXTRA_ARGS, int, int );
#ifdef HAVE_SYS_SHM_H
static IMAGE_TYPE *CreateShmImage ( vout_thread_t *,
                                    Display *, EXTRA_ARGS_SHM, int, int );
#endif

static void ToggleFullScreen      ( vout_thread_t * );

static void EnableXScreenSaver    ( vout_thread_t * );
static void DisableXScreenSaver   ( vout_thread_t * );

static void CreateCursor   ( vout_thread_t * );
static void DestroyCursor  ( vout_thread_t * );
static void ToggleCursor   ( vout_thread_t * );

#ifdef MODULE_NAME_IS_xvideo
static int  XVideoGetPort    ( vout_thread_t *, vlc_fourcc_t, vlc_fourcc_t * );
static void XVideoReleasePort( vout_thread_t *, int );
#endif

#ifdef MODULE_NAME_IS_x11
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static void SetPalette     ( vout_thread_t *,
                             uint16_t *, uint16_t *, uint16_t * );
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#endif

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static void TestNetWMSupport( vout_thread_t * );
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static int ConvertKey( int );

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static int WindowOnTop( vout_thread_t *, vlc_bool_t );
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/*****************************************************************************
 * Activate: allocate X11 video thread output method
 *****************************************************************************
 * This function allocate and initialize a X11 vout method. It uses some of the
 * vout properties to choose the window size, and change them according to the
 * actual properties of the display.
 *****************************************************************************/
int E_(Activate) ( vlc_object_t *p_this )
{
    vout_thread_t *p_vout = (vout_thread_t *)p_this;
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    char *        psz_display;
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    vlc_value_t   val;
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#ifdef MODULE_NAME_IS_xvideo
    char *       psz_chroma;
    vlc_fourcc_t i_chroma = 0;
    vlc_bool_t   b_chroma = 0;
#endif

    p_vout->pf_init = InitVideo;
    p_vout->pf_end = EndVideo;
    p_vout->pf_manage = ManageVideo;
    p_vout->pf_render = NULL;
    p_vout->pf_display = DisplayVideo;
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    p_vout->pf_control = Control;
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    /* Allocate structure */
    p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
    if( p_vout->p_sys == NULL )
    {
        msg_Err( p_vout, "out of memory" );
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        return VLC_ENOMEM;
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    }

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    vlc_mutex_init( p_vout, &p_vout->p_sys->lock );

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    /* Open display, using the "display" config variable or the DISPLAY
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     * environment variable */
    psz_display = config_GetPsz( p_vout, MODULE_STRING "-display" );

    p_vout->p_sys->p_display = XOpenDisplay( psz_display );

    if( p_vout->p_sys->p_display == NULL )                          /* error */
    {
        msg_Err( p_vout, "cannot open display %s",
                         XDisplayName( psz_display ) );
        free( p_vout->p_sys );
        if( psz_display ) free( psz_display );
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        return VLC_EGENERIC;
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    }
    if( psz_display ) free( psz_display );

    /* Get a screen ID matching the XOpenDisplay return value */
    p_vout->p_sys->i_screen = DefaultScreen( p_vout->p_sys->p_display );

#ifdef MODULE_NAME_IS_xvideo
    psz_chroma = config_GetPsz( p_vout, "xvideo-chroma" );
    if( psz_chroma )
    {
        if( strlen( psz_chroma ) >= 4 )
        {
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            /* Do not use direct assignment because we are not sure of the
             * alignment. */
            memcpy(&i_chroma, psz_chroma, 4);
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            b_chroma = 1;
        }

        free( psz_chroma );
    }

    if( b_chroma )
    {
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        msg_Dbg( p_vout, "forcing chroma 0x%.8x (%4.4s)",
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                 i_chroma, (char*)&i_chroma );
    }
    else
    {
        i_chroma = p_vout->render.i_chroma;
    }

    /* Check that we have access to an XVideo port providing this chroma */
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    p_vout->p_sys->i_xvport = XVideoGetPort( p_vout, VLC2X11_FOURCC(i_chroma),
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                                             &p_vout->output.i_chroma );
    if( p_vout->p_sys->i_xvport < 0 )
    {
        /* If a specific chroma format was requested, then we don't try to
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         * be cleverer than the user. He knew pretty well what he wanted. */
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        if( b_chroma )
        {
            XCloseDisplay( p_vout->p_sys->p_display );
            free( p_vout->p_sys );
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            return VLC_EGENERIC;
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        }

        /* It failed, but it's not completely lost ! We try to open an
         * XVideo port for an YUY2 picture. We'll need to do an YUV
         * conversion, but at least it has got scaling. */
        p_vout->p_sys->i_xvport =
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                        XVideoGetPort( p_vout, X11_FOURCC('Y','U','Y','2'),
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                                               &p_vout->output.i_chroma );
        if( p_vout->p_sys->i_xvport < 0 )
        {
            /* It failed, but it's not completely lost ! We try to open an
             * XVideo port for a simple 16bpp RGB picture. We'll need to do
             * an YUV conversion, but at least it has got scaling. */
            p_vout->p_sys->i_xvport =
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                            XVideoGetPort( p_vout, X11_FOURCC('R','V','1','6'),
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                                                   &p_vout->output.i_chroma );
            if( p_vout->p_sys->i_xvport < 0 )
            {
                XCloseDisplay( p_vout->p_sys->p_display );
                free( p_vout->p_sys );
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                return VLC_EGENERIC;
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            }
        }
    }
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    p_vout->output.i_chroma = X112VLC_FOURCC(p_vout->output.i_chroma);
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#endif

    /* Create blank cursor (for mouse cursor autohiding) */
    p_vout->p_sys->i_time_mouse_last_moved = mdate();
    p_vout->p_sys->b_mouse_pointer_visible = 1;
    CreateCursor( p_vout );

    /* Set main window's size */
    p_vout->p_sys->original_window.i_width = p_vout->i_window_width;
    p_vout->p_sys->original_window.i_height = p_vout->i_window_height;

    /* Spawn base window - this window will include the video output window,
     * but also command buttons, subtitles and other indicators */
    if( CreateWindow( p_vout, &p_vout->p_sys->original_window ) )
    {
        msg_Err( p_vout, "cannot create X11 window" );
        DestroyCursor( p_vout );
        XCloseDisplay( p_vout->p_sys->p_display );
        free( p_vout->p_sys );
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        return VLC_EGENERIC;
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    }

    /* Open and initialize device. */
    if( InitDisplay( p_vout ) )
    {
        msg_Err( p_vout, "cannot initialize X11 display" );
        DestroyCursor( p_vout );
        DestroyWindow( p_vout, &p_vout->p_sys->original_window );
        XCloseDisplay( p_vout->p_sys->p_display );
        free( p_vout->p_sys );
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        return VLC_EGENERIC;
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    }

    /* Disable screen saver */
    DisableXScreenSaver( p_vout );

    /* Misc init */
    p_vout->p_sys->b_altfullscreen = 0;
    p_vout->p_sys->i_time_button_last_pressed = 0;

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    TestNetWMSupport( p_vout );

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    /* Variable to indicate if the window should be on top of others */
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    /* Trigger a callback right now */
    var_Get( p_vout, "video-on-top", &val );
    var_Set( p_vout, "video-on-top", val );

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    return VLC_SUCCESS;
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}

/*****************************************************************************
 * Deactivate: destroy X11 video thread output method
 *****************************************************************************
 * Terminate an output method created by Open
 *****************************************************************************/
void E_(Deactivate) ( vlc_object_t *p_this )
{
    vout_thread_t *p_vout = (vout_thread_t *)p_this;

    /* If the fullscreen window is still open, close it */
    if( p_vout->b_fullscreen )
    {
        ToggleFullScreen( p_vout );
    }

    /* Restore cursor if it was blanked */
    if( !p_vout->p_sys->b_mouse_pointer_visible )
    {
        ToggleCursor( p_vout );
    }

#ifdef MODULE_NAME_IS_x11
    /* Destroy colormap */
    if( XDefaultDepth(p_vout->p_sys->p_display, p_vout->p_sys->i_screen) == 8 )
    {
        XFreeColormap( p_vout->p_sys->p_display, p_vout->p_sys->colormap );
    }
#else
    XVideoReleasePort( p_vout, p_vout->p_sys->i_xvport );
#endif

    DestroyCursor( p_vout );
    EnableXScreenSaver( p_vout );
    DestroyWindow( p_vout, &p_vout->p_sys->original_window );

    XCloseDisplay( p_vout->p_sys->p_display );

    /* Destroy structure */
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    vlc_mutex_destroy( &p_vout->p_sys->lock );
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    free( p_vout->p_sys );
}

/*****************************************************************************
 * InitVideo: initialize X11 video thread output method
 *****************************************************************************
 * This function create the XImages needed by the output thread. It is called
 * at the beginning of the thread, but also each time the window is resized.
 *****************************************************************************/
static int InitVideo( vout_thread_t *p_vout )
{
    int i_index;
    picture_t *p_pic;

    I_OUTPUTPICTURES = 0;

#ifdef MODULE_NAME_IS_xvideo
    /* Initialize the output structure; we already found an XVideo port,
     * and the corresponding chroma we will be using. Since we can
     * arbitrary scale, stick to the coordinates and aspect. */
    p_vout->output.i_width  = p_vout->render.i_width;
    p_vout->output.i_height = p_vout->render.i_height;
    p_vout->output.i_aspect = p_vout->render.i_aspect;

    switch( p_vout->output.i_chroma )
    {
        case VLC_FOURCC('R','V','1','5'):
            p_vout->output.i_rmask = 0x001f;
            p_vout->output.i_gmask = 0x07e0;
            p_vout->output.i_bmask = 0xf800;
            break;
        case VLC_FOURCC('R','V','1','6'):
            p_vout->output.i_rmask = 0x001f;
            p_vout->output.i_gmask = 0x03e0;
            p_vout->output.i_bmask = 0x7c00;
            break;
    }

#else
    /* Initialize the output structure: RGB with square pixels, whatever
     * the input format is, since it's the only format we know */
    switch( p_vout->p_sys->i_screen_depth )
    {
        case 8: /* FIXME: set the palette */
            p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
        case 15:
            p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
        case 16:
            p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
        case 24:
            p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
        case 32:
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            p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
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        default:
            msg_Err( p_vout, "unknown screen depth %i",
                     p_vout->p_sys->i_screen_depth );
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            return VLC_SUCCESS;
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    }

    vout_PlacePicture( p_vout, p_vout->p_sys->p_win->i_width,
                       p_vout->p_sys->p_win->i_height,
                       &i_index, &i_index,
                       &p_vout->output.i_width, &p_vout->output.i_height );

    /* Assume we have square pixels */
    p_vout->output.i_aspect = p_vout->output.i_width
                               * VOUT_ASPECT_FACTOR / p_vout->output.i_height;
#endif

    /* Try to initialize up to MAX_DIRECTBUFFERS direct buffers */
    while( I_OUTPUTPICTURES < MAX_DIRECTBUFFERS )
    {
        p_pic = NULL;

        /* Find an empty picture slot */
        for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
        {
          if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
            {
                p_pic = p_vout->p_picture + i_index;
                break;
            }
        }

        /* Allocate the picture */
        if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
        {
            break;
        }

        p_pic->i_status = DESTROYED_PICTURE;
        p_pic->i_type   = DIRECT_PICTURE;

        PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;

        I_OUTPUTPICTURES++;
    }

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    return VLC_SUCCESS;
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}

 /*****************************************************************************
 * DisplayVideo: displays previously rendered output
 *****************************************************************************
 * This function sends the currently rendered image to X11 server.
 * (The Xv extension takes care of "double-buffering".)
 *****************************************************************************/
static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
{
    int i_width, i_height, i_x, i_y;

    vout_PlacePicture( p_vout, p_vout->p_sys->p_win->i_width,
                       p_vout->p_sys->p_win->i_height,
                       &i_x, &i_y, &i_width, &i_height );

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    vlc_mutex_lock( &p_vout->p_sys->lock );

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#ifdef HAVE_SYS_SHM_H
    if( p_vout->p_sys->b_shm )
    {
        /* Display rendered image using shared memory extension */
#   ifdef MODULE_NAME_IS_xvideo
        XvShmPutImage( p_vout->p_sys->p_display, p_vout->p_sys->i_xvport,
                       p_vout->p_sys->p_win->video_window,
                       p_vout->p_sys->p_win->gc, p_pic->p_sys->p_image,
                       0 /*src_x*/, 0 /*src_y*/,
                       p_vout->output.i_width, p_vout->output.i_height,
                       0 /*dest_x*/, 0 /*dest_y*/, i_width, i_height,
                       False /* Don't put True here or you'll waste your CPU */ );
#   else
        XShmPutImage( p_vout->p_sys->p_display,
                      p_vout->p_sys->p_win->video_window,
                      p_vout->p_sys->p_win->gc, p_pic->p_sys->p_image,
                      0 /*src_x*/, 0 /*src_y*/, 0 /*dest_x*/, 0 /*dest_y*/,
                      p_vout->output.i_width, p_vout->output.i_height,
                      False /* Don't put True here ! */ );
#   endif
    }
    else
#endif /* HAVE_SYS_SHM_H */
    {
        /* Use standard XPutImage -- this is gonna be slow ! */
#ifdef MODULE_NAME_IS_xvideo
        XvPutImage( p_vout->p_sys->p_display, p_vout->p_sys->i_xvport,
                    p_vout->p_sys->p_win->video_window,
                    p_vout->p_sys->p_win->gc, p_pic->p_sys->p_image,
                    0 /*src_x*/, 0 /*src_y*/,
                    p_vout->output.i_width, p_vout->output.i_height,
                    0 /*dest_x*/, 0 /*dest_y*/, i_width, i_height );
#else
        XPutImage( p_vout->p_sys->p_display,
                   p_vout->p_sys->p_win->video_window,
                   p_vout->p_sys->p_win->gc, p_pic->p_sys->p_image,
                   0 /*src_x*/, 0 /*src_y*/, 0 /*dest_x*/, 0 /*dest_y*/,
                   p_vout->output.i_width, p_vout->output.i_height );
#endif
    }

    /* Make sure the command is sent now - do NOT use XFlush !*/
    XSync( p_vout->p_sys->p_display, False );
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    vlc_mutex_unlock( &p_vout->p_sys->lock );
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}

/*****************************************************************************
 * ManageVideo: handle X11 events
 *****************************************************************************
 * This function should be called regularly by video output thread. It manages
 * X11 events and allows window resizing. It returns a non null value on
 * error.
 *****************************************************************************/
static int ManageVideo( vout_thread_t *p_vout )
{
    XEvent      xevent;                                         /* X11 event */
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    vlc_value_t val;
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    vlc_mutex_lock( &p_vout->p_sys->lock );

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    /* Handle events from the owner window */
    if( p_vout->p_sys->p_win->owner_window )
    {
        while( XCheckWindowEvent( p_vout->p_sys->p_display,
                                  p_vout->p_sys->p_win->owner_window,
                                  StructureNotifyMask, &xevent ) == True )
        {
            /* ConfigureNotify event: prepare  */
            if( xevent.type == ConfigureNotify )
            {
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                /* Update dimensions */
                XResizeWindow( p_vout->p_sys->p_display,
                               p_vout->p_sys->p_win->base_window,
                               xevent.xconfigure.width,
                               xevent.xconfigure.height );
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            }
        }
    }

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    /* Handle X11 events: ConfigureNotify events are parsed to know if the
     * output window's size changed, MapNotify and UnmapNotify to know if the
     * window is mapped (and if the display is useful), and ClientMessages
     * to intercept window destruction requests */

    while( XCheckWindowEvent( p_vout->p_sys->p_display,
                              p_vout->p_sys->p_win->base_window,
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                              StructureNotifyMask | KeyPressMask |
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                              ButtonPressMask | ButtonReleaseMask |
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                              PointerMotionMask | Button1MotionMask , &xevent )
           == True )
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    {
        /* ConfigureNotify event: prepare  */
        if( xevent.type == ConfigureNotify )
        {
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            if( (unsigned int)xevent.xconfigure.width
                   != p_vout->p_sys->p_win->i_width
              || (unsigned int)xevent.xconfigure.height
                    != p_vout->p_sys->p_win->i_height )
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            {
                /* Update dimensions */
                p_vout->i_changes |= VOUT_SIZE_CHANGE;
                p_vout->p_sys->p_win->i_width = xevent.xconfigure.width;
                p_vout->p_sys->p_win->i_height = xevent.xconfigure.height;
            }
        }
        /* Keyboard event */
        else if( xevent.type == KeyPress )
        {
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            unsigned int state = xevent.xkey.state;
            KeySym x_key_symbol;
            char i_key;                                   /* ISO Latin-1 key */

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            /* We may have keys like F1 trough F12, ESC ... */
            x_key_symbol = XKeycodeToKeysym( p_vout->p_sys->p_display,
                                             xevent.xkey.keycode, 0 );
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            val.i_int = ConvertKey( (int)x_key_symbol );
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            xevent.xkey.state &= ~ShiftMask;
            xevent.xkey.state &= ~ControlMask;
            xevent.xkey.state &= ~Mod1Mask;

            if( !val.i_int &&
                XLookupString( &xevent.xkey, &i_key, 1, NULL, NULL ) )
            {
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                /* "Normal Keys"
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                 * The reason why I use this instead of XK_0 is that
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                 * with XLookupString, we don't have to care about
                 * keymaps. */
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                val.i_int = i_key;
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            }
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            if( val.i_int )
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            {
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                if( state & ShiftMask )
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                {
                    val.i_int |= KEY_MODIFIER_SHIFT;
                }
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                if( state & ControlMask )
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                {
                    val.i_int |= KEY_MODIFIER_CTRL;
                }
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                if( state & Mod1Mask )
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                {
                    val.i_int |= KEY_MODIFIER_ALT;
                }
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                var_Set( p_vout->p_vlc, "key-pressed", val );
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            }
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        }
        /* Mouse click */
        else if( xevent.type == ButtonPress )
        {
            switch( ((XButtonEvent *)&xevent)->button )
            {
                case Button1:
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                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int |= 1;
                    var_Set( p_vout, "mouse-button-down", val );
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                    /* detect double-clicks */
                    if( ( ((XButtonEvent *)&xevent)->time -
                          p_vout->p_sys->i_time_button_last_pressed ) < 300 )
                    {
                        p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
                    }

                    p_vout->p_sys->i_time_button_last_pressed =
                        ((XButtonEvent *)&xevent)->time;
                    break;
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                case Button2:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int |= 2;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;
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                case Button3:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int |= 4;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;
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                case Button4:
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                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int |= 8;
                    var_Set( p_vout, "mouse-button-down", val );
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                    input_Seek( p_vout, 15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
                    break;

                case Button5:
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                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int |= 16;
                    var_Set( p_vout, "mouse-button-down", val );
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                    input_Seek( p_vout, -15, INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
                    break;
            }
        }
        /* Mouse release */
        else if( xevent.type == ButtonRelease )
        {
            switch( ((XButtonEvent *)&xevent)->button )
            {
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                case Button1:
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                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int &= ~1;
                    var_Set( p_vout, "mouse-button-down", val );

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                    val.b_bool = VLC_TRUE;
                    var_Set( p_vout, "mouse-clicked", val );
                    break;
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                case Button2:
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                    {
                        playlist_t *p_playlist;

                        var_Get( p_vout, "mouse-button-down", &val );
                        val.i_int &= ~2;
                        var_Set( p_vout, "mouse-button-down", val );

                        p_playlist = vlc_object_find( p_vout,
                                                      VLC_OBJECT_PLAYLIST,
                                                      FIND_ANYWHERE );
                        if( p_playlist != NULL )
                        {
                            vlc_value_t val;
                            var_Get( p_playlist, "intf-show", &val );
                            val.b_bool = !val.b_bool;
                            var_Set( p_playlist, "intf-show", val );
                            vlc_object_release( p_playlist );
                        }
                    }
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                    break;
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                case Button3:
                    {
                        intf_thread_t *p_intf;
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                        playlist_t *p_playlist;

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                        var_Get( p_vout, "mouse-button-down", &val );
                        val.i_int &= ~4;
                        var_Set( p_vout, "mouse-button-down", val );
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                        p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
                                                          FIND_ANYWHERE );
                        if( p_intf )
                        {
                            p_intf->b_menu_change = 1;
                            vlc_object_release( p_intf );
                        }
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                        p_playlist = vlc_object_find( p_vout,
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                                                      VLC_OBJECT_PLAYLIST,
                                                      FIND_ANYWHERE );
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                        if( p_playlist != NULL )
                        {
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                            vlc_value_t val; val.b_bool = VLC_TRUE;
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                            var_Set( p_playlist, "intf-popupmenu", val );
                            vlc_object_release( p_playlist );
                        }
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                    }
                    break;
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                case Button4:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int &= ~8;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;

                case Button5:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int &= ~16;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;
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            }
        }
        /* Mouse move */
        else if( xevent.type == MotionNotify )
        {
            int i_width, i_height, i_x, i_y;
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            vlc_value_t val;
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            /* somewhat different use for vout_PlacePicture:
             * here the values are needed to give to mouse coordinates
             * in the original picture space */
            vout_PlacePicture( p_vout, p_vout->p_sys->p_win->i_width,
                               p_vout->p_sys->p_win->i_height,
                               &i_x, &i_y, &i_width, &i_height );

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            val.i_int = ( xevent.xmotion.x - i_x )
                         * p_vout->render.i_width / i_width;
            var_Set( p_vout, "mouse-x", val );
            val.i_int = ( xevent.xmotion.y - i_y )
                         * p_vout->render.i_height / i_height;
            var_Set( p_vout, "mouse-y", val );

            val.b_bool = VLC_TRUE;
            var_Set( p_vout, "mouse-moved", val );

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            p_vout->p_sys->i_time_mouse_last_moved = mdate();
            if( ! p_vout->p_sys->b_mouse_pointer_visible )
            {
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                ToggleCursor( p_vout );
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            }
        }
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        else if( xevent.type == ReparentNotify /* XXX: why do we get this? */
                  || xevent.type == MapNotify
                  || xevent.type == UnmapNotify )
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        {
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            /* Ignore these events */
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        }
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        else /* Other events */
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        {
            msg_Warn( p_vout, "unhandled event %d received", xevent.type );
        }
    }

    /* Handle events for video output sub-window */
    while( XCheckWindowEvent( p_vout->p_sys->p_display,
                              p_vout->p_sys->p_win->video_window,
                              ExposureMask, &xevent ) == True )
    {
        /* Window exposed (only handled if stream playback is paused) */
        if( xevent.type == Expose )
        {
            if( ((XExposeEvent *)&xevent)->count == 0 )
            {
                /* (if this is the last a collection of expose events...) */
#if 0
                if( p_vout->p_vlc->p_input_bank->pp_input[0] != NULL )
                {
                    if( PAUSE_S == p_vout->p_vlc->p_input_bank->pp_input[0]
                                                   ->stream.control.i_status )
                    {
                        /* XVideoDisplay( p_vout )*/;
                    }
                }
#endif
            }
        }
    }

    /* ClientMessage event - only WM_PROTOCOLS with WM_DELETE_WINDOW data
     * are handled - according to the man pages, the format is always 32
     * in this case */
    while( XCheckTypedEvent( p_vout->p_sys->p_display,
                             ClientMessage, &xevent ) )
    {
        if( (xevent.xclient.message_type == p_vout->p_sys->p_win->wm_protocols)
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               && ((Atom)xevent.xclient.data.l[0]
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                     == p_vout->p_sys->p_win->wm_delete_window ) )
        {
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            /* the user wants to close the window */
            playlist_t * p_playlist =
                (playlist_t *)vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
                                               FIND_ANYWHERE );
            if( p_playlist != NULL )
            {
                playlist_Stop( p_playlist );
                vlc_object_release( p_playlist );
            }
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        }
    }

    /*
     * Fullscreen Change
     */
    if ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
    {
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        vlc_value_t val;

        /* Update the object variable and trigger callback */
        val.b_bool = !p_vout->b_fullscreen;
        var_Set( p_vout, "fullscreen", val );

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        ToggleFullScreen( p_vout );
        p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
    }

    /*
     * Size change
     *
     * (Needs to be placed after VOUT_FULLSREEN_CHANGE because we can activate
     *  the size flag inside the fullscreen routine)
     */
    if( p_vout->i_changes & VOUT_SIZE_CHANGE )
    {
        int i_width, i_height, i_x, i_y;

        p_vout->i_changes &= ~VOUT_SIZE_CHANGE;

#ifdef MODULE_NAME_IS_x11
        /* We need to signal the vout thread about the size change because it
         * is doing the rescaling */
        p_vout->i_changes |= VOUT_SIZE_CHANGE;
#endif

        vout_PlacePicture( p_vout, p_vout->p_sys->p_win->i_width,
                           p_vout->p_sys->p_win->i_height,
                           &i_x, &i_y, &i_width, &i_height );

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        XMoveResizeWindow( p_vout->p_sys->p_display,
                           p_vout->p_sys->p_win->video_window,
                           i_x, i_y, i_width, i_height );
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    }

    /* Autohide Cursour */
    if( mdate() - p_vout->p_sys->i_time_mouse_last_moved > 2000000 )
    {
        /* Hide the mouse automatically */
        if( p_vout->p_sys->b_mouse_pointer_visible )
        {
            ToggleCursor( p_vout );
        }
    }

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    vlc_mutex_unlock( &p_vout->p_sys->lock );

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    return 0;
}

/*****************************************************************************
 * EndVideo: terminate X11 video thread output method
 *****************************************************************************
 * Destroy the X11 XImages created by Init. It is called at the end of
 * the thread, but also each time the window is resized.
 *****************************************************************************/
static void EndVideo( vout_thread_t *p_vout )
{
    int i_index;

    /* Free the direct buffers we allocated */
    for( i_index = I_OUTPUTPICTURES ; i_index ; )
    {
        i_index--;
        FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
    }
}

/* following functions are local */

/*****************************************************************************
 * CreateWindow: open and set-up X11 main window
 *****************************************************************************/
static int CreateWindow( vout_thread_t *p_vout, x11_window_t *p_win )
{
    XSizeHints              xsize_hints;
    XSetWindowAttributes    xwindow_attributes;
    XGCValues               xgcvalues;
    XEvent                  xevent;

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    vlc_bool_t              b_expose = VLC_FALSE;
    vlc_bool_t              b_configure_notify = VLC_FALSE;
    vlc_bool_t              b_map_notify = VLC_FALSE;
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    /* Prepare window manager hints and properties */
    p_win->wm_protocols =
             XInternAtom( p_vout->p_sys->p_display, "WM_PROTOCOLS", True );
    p_win->wm_delete_window =
             XInternAtom( p_vout->p_sys->p_display, "WM_DELETE_WINDOW", True );

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    /* Never have a 0-pixel-wide window */
    xsize_hints.min_width = 2;
    xsize_hints.min_height = 1;

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    /* Prepare window attributes */
    xwindow_attributes.backing_store = Always;       /* save the hidden part */
    xwindow_attributes.background_pixel = BlackPixel(p_vout->p_sys->p_display,
                                                     p_vout->p_sys->i_screen);
    xwindow_attributes.event_mask = ExposureMask | StructureNotifyMask;

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    if( !p_vout->b_fullscreen )
    {
        p_win->owner_window =
            (Window)vout_RequestWindow( p_vout, &p_win->i_x, &p_win->i_y,
                                        &p_win->i_width, &p_win->i_height );

        xsize_hints.base_width  = xsize_hints.width = p_win->i_width;
        xsize_hints.base_height = xsize_hints.height = p_win->i_height;
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        xsize_hints.flags       = PSize | PMinSize;
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        if( p_win->i_x >=0 || p_win->i_y >= 0 )
        {
            xsize_hints.x = p_win->i_x;
            xsize_hints.y = p_win->i_y;
            xsize_hints.flags |= PPosition;
        }
    }
    else
    {
        /* Fullscreen window size and position */
        p_win->owner_window = 0;
        p_win->i_x = p_win->i_y = 0;
        p_win->i_width =
            DisplayWidth( p_vout->p_sys->p_display, p_vout->p_sys->i_screen );
        p_win->i_height =
            DisplayHeight( p_vout->p_sys->p_display, p_vout->p_sys->i_screen );
    }
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    if( !p_win->owner_window )
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    {
        /* Create the window and set hints - the window must receive
         * ConfigureNotify events, and until it is displayed, Expose and
         * MapNotify events. */

        p_win->base_window =
            XCreateWindow( p_vout->p_sys->p_display,
                           DefaultRootWindow( p_vout->p_sys->p_display ),
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                           p_win->i_x, p_win->i_y,
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                           p_win->i_width, p_win->i_height,
                           0,
                           0, InputOutput, 0,
                           CWBackingStore | CWBackPixel | CWEventMask,
                           &xwindow_attributes );

        if( !p_vout->b_fullscreen )
        {
            /* Set window manager hints and properties: size hints, command,
             * window's name, and accepted protocols */
            XSetWMNormalHints( p_vout->p_sys->p_display,
                               p_win->base_window, &xsize_hints );
            XSetCommand( p_vout->p_sys->p_display, p_win->base_window,
                         p_vout->p_vlc->ppsz_argv, p_vout->p_vlc->i_argc );

            XStoreName( p_vout->p_sys->p_display, p_win->base_window,
#ifdef MODULE_NAME_IS_x11
                        VOUT_TITLE " (X11 output)"
#else
                        VOUT_TITLE " (XVideo output)"
#endif
                      );
        }
    }
    else
    {
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        Window dummy1;
        unsigned int dummy2, dummy3;

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        /* Select events we are interested in. */
        XSelectInput( p_vout->p_sys->p_display, p_win->owner_window,
                      StructureNotifyMask );

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        /* Get the parent window's geometry information */
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        XGetGeometry( p_vout->p_sys->p_display, p_win->owner_window,
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                      &dummy1, &dummy2, &dummy3,
                      &p_win->i_width,
                      &p_win->i_height,
                      &dummy2, &dummy3 );
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        /* We are already configured */
        b_configure_notify = VLC_TRUE;

        /* From man XSelectInput: only one client at a time can select a