Exemple #1
0
/*****************************************************************************
 * Init: initialize Transform video thread output method
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    int i_index;
    picture_t *p_pic;
    video_format_t fmt = {0};

    I_OUTPUTPICTURES = 0;

    /* Initialize the output structure */
    p_vout->output.i_chroma = p_vout->render.i_chroma;
    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;
    p_vout->fmt_out = p_vout->fmt_in;
    fmt = p_vout->fmt_out;

    /* Try to open the real video output */
    msg_Dbg( p_vout, "spawning the real video output" );

    if( p_vout->p_sys->b_rotation )
    {
        fmt.i_width = p_vout->fmt_out.i_height;
        fmt.i_visible_width = p_vout->fmt_out.i_visible_height;
        fmt.i_x_offset = p_vout->fmt_out.i_y_offset;

        fmt.i_height = p_vout->fmt_out.i_width;
        fmt.i_visible_height = p_vout->fmt_out.i_visible_width;
        fmt.i_y_offset = p_vout->fmt_out.i_x_offset;

        fmt.i_aspect = VOUT_ASPECT_FACTOR *
            (uint64_t)VOUT_ASPECT_FACTOR / fmt.i_aspect;

        fmt.i_sar_num = p_vout->fmt_out.i_sar_den;
        fmt.i_sar_den = p_vout->fmt_out.i_sar_num;
    }

    p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );

    /* Everything failed */
    if( p_vout->p_sys->p_vout == NULL )
    {
        msg_Err( p_vout, "cannot open vout, aborting" );
        return VLC_EGENERIC;
    }

    ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );

    ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );

    ADD_PARENT_CALLBACKS( SendEventsToChild );

    return VLC_SUCCESS;
}
Exemple #2
0
Fichier : crop.c Projet : Kafay/vlc
/*****************************************************************************
 * Manage: handle Crop events
 *****************************************************************************
 * This function should be called regularly by video output thread. It manages
 * console events. It returns a non null value on error.
 *****************************************************************************/
static int Manage( vout_thread_t *p_vout )
{
    video_format_t fmt;

    if( !p_vout->p_sys->b_changed )
    {
        return VLC_SUCCESS;
    }

    memset( &fmt, 0, sizeof(video_format_t) );

#ifdef BEST_AUTOCROP
    /* XXX: not thread-safe with FilterCallback */
    msg_Dbg( p_vout, "cropping at %ix%i+%i+%i, %sautocropping",
                     p_vout->p_sys->i_width, p_vout->p_sys->i_height,
                     p_vout->p_sys->i_x, p_vout->p_sys->i_y,
                     p_vout->p_sys->b_autocrop ? "" : "not " );

    msg_Info( p_vout, "ratio %d",  p_vout->p_sys->i_aspect / 432);
#endif

    if( p_vout->p_sys->p_vout )
    {
        vout_filter_DelChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );
        vout_CloseAndRelease( p_vout->p_sys->p_vout );
    }

    fmt.i_width = fmt.i_visible_width = p_vout->p_sys->i_width;
    fmt.i_height = fmt.i_visible_height = p_vout->p_sys->i_height;
    fmt.i_x_offset = fmt.i_y_offset = 0;
    fmt.i_chroma = p_vout->render.i_chroma;
    fmt.i_aspect = p_vout->p_sys->i_aspect;
    fmt.i_sar_num = p_vout->p_sys->i_aspect * fmt.i_height / fmt.i_width;
    fmt.i_sar_den = VOUT_ASPECT_FACTOR;

    p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
    if( p_vout->p_sys->p_vout == NULL )
    {
        msg_Err( p_vout, "failed to create vout" );
        dialog_Fatal( p_vout, _("Cropping failed"),
                        _("VLC could not open the video output module.") );
        return VLC_EGENERIC;
    }
    vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );

    p_vout->p_sys->b_changed = false;
    vlc_mutex_lock( &p_vout->p_sys->lock );
    p_vout->p_sys->i_lastchange = 0;
    vlc_mutex_unlock( &p_vout->p_sys->lock );

    return VLC_SUCCESS;
}
Exemple #3
0
/*****************************************************************************
 * Init: initialize Transform video thread output method
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    video_format_t fmt;

    I_OUTPUTPICTURES = 0;
    memset( &fmt, 0, sizeof(video_format_t) );

    /* Initialize the output structure */
    p_vout->output.i_chroma = p_vout->render.i_chroma;
    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;
    p_vout->fmt_out = p_vout->fmt_in;
    fmt = p_vout->fmt_out;

    /* Try to open the real video output */
    msg_Dbg( p_vout, "spawning the real video output" );

    if( p_vout->p_sys->b_rotation )
    {
        fmt.i_width = p_vout->fmt_out.i_height;
        fmt.i_visible_width = p_vout->fmt_out.i_visible_height;
        fmt.i_x_offset = p_vout->fmt_out.i_y_offset;

        fmt.i_height = p_vout->fmt_out.i_width;
        fmt.i_visible_height = p_vout->fmt_out.i_visible_width;
        fmt.i_y_offset = p_vout->fmt_out.i_x_offset;

        fmt.i_sar_num = p_vout->fmt_out.i_sar_den;
        fmt.i_sar_den = p_vout->fmt_out.i_sar_num;
    }

    p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );

    /* Everything failed */
    if( p_vout->p_sys->p_vout == NULL )
    {
        msg_Err( p_vout, "cannot open vout, aborting" );
        return VLC_EGENERIC;
    }

    vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );

    vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );

    return VLC_SUCCESS;
}
Exemple #4
0
/*****************************************************************************
 * Init: initialize logo video thread output method
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    vout_sys_t *p_sys = p_vout->p_sys;
    picture_t *p_pic;
    int i_index;

    I_OUTPUTPICTURES = 0;

    /* Initialize the output structure */
    p_vout->output.i_chroma = p_vout->render.i_chroma;
    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;

    /* Load the video blending filter */
    p_sys->p_blend = vlc_object_create( p_vout, sizeof(filter_t) );
    vlc_object_attach( p_sys->p_blend, p_vout );
    p_sys->p_blend->fmt_out.video.i_x_offset =
        p_sys->p_blend->fmt_out.video.i_y_offset = 0;
    p_sys->p_blend->fmt_in.video.i_x_offset =
        p_sys->p_blend->fmt_in.video.i_y_offset = 0;
    p_sys->p_blend->fmt_out.video.i_aspect = p_vout->render.i_aspect;
    p_sys->p_blend->fmt_out.video.i_chroma = p_vout->output.i_chroma;
    p_sys->p_blend->fmt_in.video.i_chroma = VLC_FOURCC('Y','U','V','A');
    p_sys->p_blend->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR;
    p_sys->p_blend->fmt_in.video.i_width =
        p_sys->p_blend->fmt_in.video.i_visible_width =
            p_sys->p_pic->p[Y_PLANE].i_visible_pitch;
    p_sys->p_blend->fmt_in.video.i_height =
        p_sys->p_blend->fmt_in.video.i_visible_height =
            p_sys->p_pic->p[Y_PLANE].i_visible_lines;
    p_sys->p_blend->fmt_out.video.i_width =
        p_sys->p_blend->fmt_out.video.i_visible_width =
           p_vout->output.i_width;
    p_sys->p_blend->fmt_out.video.i_height =
        p_sys->p_blend->fmt_out.video.i_visible_height =
            p_vout->output.i_height;

    p_sys->p_blend->p_module =
        module_Need( p_sys->p_blend, "video blending", 0, 0 );
    if( !p_sys->p_blend->p_module )
    {
        msg_Err( p_vout, "can't open blending filter, aborting" );
        vlc_object_detach( p_sys->p_blend );
        vlc_object_destroy( p_sys->p_blend );
        return VLC_EGENERIC;
    }

    if( p_sys->posx < 0 || p_sys->posy < 0 )
    {
        p_sys->posx = 0; p_sys->posy = 0;

        if( p_sys->pos & SUBPICTURE_ALIGN_BOTTOM )
        {
            p_sys->posy = p_vout->render.i_height - p_sys->i_height;
        }
        else if ( !(p_sys->pos & SUBPICTURE_ALIGN_TOP) )
        {
            p_sys->posy = p_vout->render.i_height / 2 - p_sys->i_height / 2;
        }

        if( p_sys->pos & SUBPICTURE_ALIGN_RIGHT )
        {
            p_sys->posx = p_vout->render.i_width - p_sys->i_width;
        }
        else if ( !(p_sys->pos & SUBPICTURE_ALIGN_LEFT) )
        {
            p_sys->posx = p_vout->render.i_width / 2 - p_sys->i_width / 2;
        }
    }

    /* Try to open the real video output */
    msg_Dbg( p_vout, "spawning the real video output" );

    p_sys->p_vout =
        vout_Create( p_vout, p_vout->render.i_width, p_vout->render.i_height,
                     p_vout->render.i_chroma, p_vout->render.i_aspect );

    /* Everything failed */
    if( p_sys->p_vout == NULL )
    {
        msg_Err( p_vout, "can't open vout, aborting" );
        return VLC_EGENERIC;
    }

    var_AddCallback( p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
    var_AddCallback( p_sys->p_vout, "mouse-y", MouseEvent, p_vout);

    ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
    ADD_CALLBACKS( p_sys->p_vout, SendEvents );
    ADD_PARENT_CALLBACKS( SendEventsToChild );

    return VLC_SUCCESS;
}
Exemple #5
0
/*****************************************************************************
 * Init: initialize Crop video thread output method
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    char *psz_var;
    video_format_t fmt;

    I_OUTPUTPICTURES = 0;
    memset( &fmt, 0, sizeof(video_format_t) );

    p_vout->p_sys->i_lastchange = 0;
    p_vout->p_sys->b_changed = false;

    /* Initialize the output structure */
    p_vout->output.i_chroma = p_vout->render.i_chroma;
    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;
    p_vout->fmt_out = p_vout->fmt_in;

    /* Shall we use autocrop ? */
    p_vout->p_sys->b_autocrop = var_InheritBool( p_vout, "autocrop" );
#ifdef BEST_AUTOCROP
    p_vout->p_sys->i_ratio_max =
        var_InheritInteger( p_vout, "autocrop-ratio-max" );
    p_vout->p_sys->i_threshold =
        var_InheritInteger( p_vout, "autocrop-luminance-threshold" );
    p_vout->p_sys->i_skipPercent =
        var_InheritInteger( p_vout, "autocrop-skip-percent" );
    p_vout->p_sys->i_nonBlackPixel =
        var_InheritInteger( p_vout, "autocrop-non-black-pixels" );
    p_vout->p_sys->i_diff =
        var_InheritInteger( p_vout, "autocrop-diff" );
    p_vout->p_sys->i_time =
        var_InheritInteger( p_vout, "autocrop-time" );
    var_SetString( p_vout, "ratio-crop", "0" );

    if (p_vout->p_sys->b_autocrop)
        p_vout->p_sys->i_ratio = 0;
    else
    {
        p_vout->p_sys->i_ratio = var_InheritInteger( p_vout, "crop-ratio" );
        // ratio < width / height => ratio = 0 (unchange ratio)
        if (p_vout->p_sys->i_ratio < (p_vout->output.i_width * 1000) / p_vout->output.i_height)
            p_vout->p_sys->i_ratio = 0;
    }
#endif


    /* Get geometry value from the user */
    psz_var = var_InheritString( p_vout, "crop-geometry" );
    if( psz_var )
    {
        char *psz_parser, *psz_tmp;

        psz_parser = psz_tmp = psz_var;
        while( *psz_tmp && *psz_tmp != 'x' ) psz_tmp++;

        if( *psz_tmp )
        {
            psz_tmp[0] = '\0';
            p_vout->p_sys->i_width = atoi( psz_parser );

            psz_parser = ++psz_tmp;
            while( *psz_tmp && *psz_tmp != '+' ) psz_tmp++;

            if( *psz_tmp )
            {
                psz_tmp[0] = '\0';
                p_vout->p_sys->i_height = atoi( psz_parser );

                psz_parser = ++psz_tmp;
                while( *psz_tmp && *psz_tmp != '+' ) psz_tmp++;

                if( *psz_tmp )
                {
                    psz_tmp[0] = '\0';
                    p_vout->p_sys->i_x = atoi( psz_parser );
                    p_vout->p_sys->i_y = atoi( ++psz_tmp );
                }
                else
                {
                    p_vout->p_sys->i_x = atoi( psz_parser );
                    p_vout->p_sys->i_y =
                     ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
                }
            }
            else
            {
                p_vout->p_sys->i_height = atoi( psz_parser );
                p_vout->p_sys->i_x =
                     ( p_vout->output.i_width - p_vout->p_sys->i_width ) / 2;
                p_vout->p_sys->i_y =
                     ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
            }
        }
        else
        {
            p_vout->p_sys->i_width = atoi( psz_parser );
            p_vout->p_sys->i_height = p_vout->output.i_height;
            p_vout->p_sys->i_x =
                     ( p_vout->output.i_width - p_vout->p_sys->i_width ) / 2;
            p_vout->p_sys->i_y =
                     ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
        }

        /* Check for validity */
        if( p_vout->p_sys->i_x + p_vout->p_sys->i_width
                                                   > p_vout->output.i_width )
        {
            p_vout->p_sys->i_x = 0;
            if( p_vout->p_sys->i_width > p_vout->output.i_width )
            {
                p_vout->p_sys->i_width = p_vout->output.i_width;
            }
        }

        if( p_vout->p_sys->i_y + p_vout->p_sys->i_height
                                                   > p_vout->output.i_height )
        {
            p_vout->p_sys->i_y = 0;
            if( p_vout->p_sys->i_height > p_vout->output.i_height )
            {
                p_vout->p_sys->i_height = p_vout->output.i_height;
            }
        }

        free( psz_var );
    }
    else
#ifdef BEST_AUTOCROP
    if (p_vout->p_sys->i_ratio)
    {
        p_vout->p_sys->i_aspect    =  p_vout->p_sys->i_ratio * 432;
        p_vout->p_sys->i_width  = p_vout->fmt_out.i_visible_width;
        p_vout->p_sys->i_height = p_vout->output.i_aspect
                                * p_vout->output.i_height / p_vout->p_sys->i_aspect
                                * p_vout->p_sys->i_width / p_vout->output.i_width;
        p_vout->p_sys->i_height += p_vout->p_sys->i_height % 2;
        p_vout->p_sys->i_x = p_vout->fmt_out.i_x_offset;
        p_vout->p_sys->i_y = (p_vout->output.i_height - p_vout->p_sys->i_height) / 2;
    }
    else
#endif
    {
        p_vout->p_sys->i_width  = p_vout->fmt_out.i_visible_width;
        p_vout->p_sys->i_height = p_vout->fmt_out.i_visible_height;
        p_vout->p_sys->i_x = p_vout->fmt_out.i_x_offset;
        p_vout->p_sys->i_y = p_vout->fmt_out.i_y_offset;
    }

    /* Pheeew. Parsing done. */
    msg_Dbg( p_vout, "cropping at %ix%i+%i+%i, %sautocropping",
                     p_vout->p_sys->i_width, p_vout->p_sys->i_height,
                     p_vout->p_sys->i_x, p_vout->p_sys->i_y,
                     p_vout->p_sys->b_autocrop ? "" : "not " );
    /* Set current output image properties */
    p_vout->p_sys->i_aspect = (int64_t)VOUT_ASPECT_FACTOR *
        p_vout->fmt_out.i_sar_num * p_vout->p_sys->i_width /
        (p_vout->fmt_out.i_sar_den * p_vout->p_sys->i_height);

#ifdef BEST_AUTOCROP
    msg_Info( p_vout, "ratio %d",  p_vout->p_sys->i_aspect / 432);
#endif
    fmt.i_width = fmt.i_visible_width = p_vout->p_sys->i_width;
    fmt.i_height = fmt.i_visible_height = p_vout->p_sys->i_height;
    fmt.i_x_offset = fmt.i_y_offset = 0;
    fmt.i_chroma = p_vout->render.i_chroma;
    fmt.i_sar_num = p_vout->p_sys->i_aspect * fmt.i_height;
    fmt.i_sar_den = VOUT_ASPECT_FACTOR * fmt.i_width;

    /* Try to open the real video output */
    p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
    if( p_vout->p_sys->p_vout == NULL )
    {
        msg_Err( p_vout, "failed to create vout" );
        dialog_Fatal( p_vout, _("Cropping failed"), "%s",
                        _("VLC could not open the video output module.") );
        return VLC_EGENERIC;
    }

    vlc_mutex_init( &p_vout->p_sys->lock );
#ifdef BEST_AUTOCROP
    var_AddCallback( p_vout, "ratio-crop", FilterCallback, NULL );
#endif

    vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );

    vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );

    return VLC_SUCCESS;
}
Exemple #6
0
/*****************************************************************************
 * Init: initialize Clone video thread output method
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    int   i_index, i_vout;
    picture_t *p_pic;
    char *psz_default_vout;

    I_OUTPUTPICTURES = 0;

    /* Initialize the output structure */
    p_vout->output.i_chroma = p_vout->render.i_chroma;
    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;

    /* Try to open the real video output */
    msg_Dbg( p_vout, "spawning the real video outputs" );

    /* Save the default vout */
    psz_default_vout = config_GetPsz( p_vout, "vout" );

    for( i_vout = 0; i_vout < p_vout->p_sys->i_clones; i_vout++ )
    {
        if( p_vout->p_sys->ppsz_vout_list == NULL 
            || ( !strncmp( p_vout->p_sys->ppsz_vout_list[i_vout],
                           "default", 8 ) ) )
        {
            p_vout->p_sys->pp_vout[i_vout] =
                vout_Create( p_vout, p_vout->render.i_width,
                             p_vout->render.i_height, p_vout->render.i_chroma, 
                             p_vout->render.i_aspect );
        }
        else
        {
            /* create the appropriate vout instead of the default one */
            config_PutPsz( p_vout, "vout",
                           p_vout->p_sys->ppsz_vout_list[i_vout] );
            p_vout->p_sys->pp_vout[i_vout] =
                vout_Create( p_vout, p_vout->render.i_width,
                             p_vout->render.i_height, p_vout->render.i_chroma, 
                             p_vout->render.i_aspect );

            /* Reset the default value */
            config_PutPsz( p_vout, "vout", psz_default_vout );
        }

        if( p_vout->p_sys->pp_vout[ i_vout ] == NULL )
        {
            msg_Err( p_vout, "failed to clone %i vout threads",
                     p_vout->p_sys->i_clones );
            p_vout->p_sys->i_clones = i_vout;
            if( psz_default_vout ) free( psz_default_vout );
            RemoveAllVout( p_vout );
            return VLC_EGENERIC;
        }

        ADD_CALLBACKS( p_vout->p_sys->pp_vout[ i_vout ], SendEvents );
    }

    if( psz_default_vout ) free( psz_default_vout );
    ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );

    ADD_PARENT_CALLBACKS( SendEventsToChild );

    return VLC_SUCCESS;
}
Exemple #7
0
/*****************************************************************************
 * Init: initialize opencv_wrapper video thread output method
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    video_format_t fmt;
    vout_sys_t *p_sys = p_vout->p_sys;
    I_OUTPUTPICTURES = 0;

    /* Initialize the output video format */
    memset( &fmt, 0, sizeof(video_format_t) );
    p_vout->output.i_chroma = p_vout->render.i_chroma;
    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;
    p_vout->fmt_out = p_vout->fmt_in;           //set to input video format

    fmt = p_vout->fmt_out;
    if (p_sys->i_wrapper_output == PROCESSED)   //set to processed video format
    {
        fmt.i_width = fmt.i_width * p_sys->f_scale;
        fmt.i_height = fmt.i_height * p_sys->f_scale;
        fmt.i_visible_width = fmt.i_visible_width * p_sys->f_scale;
        fmt.i_visible_height = fmt.i_visible_height * p_sys->f_scale;
        fmt.i_x_offset = fmt.i_x_offset * p_sys->f_scale;
        fmt.i_y_offset = fmt.i_y_offset * p_sys->f_scale;

        if (p_sys->i_internal_chroma == GREY)
            fmt.i_chroma = VLC_CODEC_I420;
        else if (p_sys->i_internal_chroma == RGB)
            fmt.i_chroma = VLC_CODEC_RGB32;
    }

    /* Load the internal opencv filter */
    /* We don't need to set up video formats for this filter as it not actually using a picture_t */
    p_sys->p_opencv = vlc_object_create( p_vout, sizeof(filter_t) );
    vlc_object_attach( p_sys->p_opencv, p_vout );

    if (p_vout->p_sys->psz_inner_name)
        p_sys->p_opencv->p_module =
            module_need( p_sys->p_opencv, p_sys->psz_inner_name, NULL, false );

    if( !p_sys->p_opencv->p_module )
    {
        msg_Err( p_vout, "can't open internal opencv filter: %s", p_vout->p_sys->psz_inner_name );
        p_vout->p_sys->psz_inner_name = NULL;
        vlc_object_release( p_sys->p_opencv );
        p_sys->p_opencv = NULL;
    }

    /* Try to open the real video output */
    if (p_sys->i_verbosity > VERB_WARN)
        msg_Dbg( p_vout, "spawning the real video output" );

    p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );

    /* Everything failed */
    if( p_vout->p_sys->p_vout == NULL )
    {
        msg_Err( p_vout, "can't open vout, aborting" );
        return VLC_EGENERIC;
    }

    vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );

    vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, NULL );

    return VLC_SUCCESS;
}
Exemple #8
0
/*****************************************************************************
 * Init: initialize Wall video thread output method
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    int i_index, i_row, i_col, i_width, i_height, i_left, i_top;
    unsigned int i_target_width,i_target_height;
    picture_t *p_pic;
    video_format_t fmt = {0};
    int i_aspect = 4*VOUT_ASPECT_FACTOR/3;
    int i_align = 0;
    unsigned int i_hstart, i_hend, i_vstart, i_vend;
    unsigned int w1,h1,w2,h2;
    int i_xpos, i_ypos;
    int i_vstart_rounded = 0, i_hstart_rounded = 0;
    char *psz_aspect;

    psz_aspect = config_GetPsz( p_vout, "wall-element-aspect" );
    if( psz_aspect && *psz_aspect )
    {
        char *psz_parser = strchr( psz_aspect, ':' );
        if( psz_parser )
        {
            *psz_parser++ = '\0';
            i_aspect = atoi( psz_aspect ) * VOUT_ASPECT_FACTOR
                / atoi( psz_parser );
        }
        else
        {
            msg_Warn( p_vout, "invalid aspect ratio specification" );
        }
        free( psz_aspect );
    }
    

    i_xpos = var_CreateGetInteger( p_vout, "video-x" );
    i_ypos = var_CreateGetInteger( p_vout, "video-y" );
    if( i_xpos < 0 ) i_xpos = 0;
    if( i_ypos < 0 ) i_ypos = 0;

    I_OUTPUTPICTURES = 0;

    /* Initialize the output structure */
    p_vout->output.i_chroma = p_vout->render.i_chroma;
    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;
    var_Create( p_vout, "align", VLC_VAR_INTEGER );

    fmt.i_width = fmt.i_visible_width = p_vout->render.i_width;
    fmt.i_height = fmt.i_visible_height = p_vout->render.i_height;
    fmt.i_x_offset = fmt.i_y_offset = 0;
    fmt.i_chroma = p_vout->render.i_chroma;
    fmt.i_aspect = p_vout->render.i_aspect;
    fmt.i_sar_num = p_vout->render.i_aspect * fmt.i_height / fmt.i_width;
    fmt.i_sar_den = VOUT_ASPECT_FACTOR;

    w1 = p_vout->output.i_width / p_vout->p_sys->i_col;
    w1 &= ~1;
    h1 = w1 * VOUT_ASPECT_FACTOR / i_aspect&~1;
    h1 &= ~1;
    
    h2 = p_vout->output.i_height / p_vout->p_sys->i_row&~1;
    h2 &= ~1;
    w2 = h2 * i_aspect / VOUT_ASPECT_FACTOR&~1;
    w2 &= ~1;
    
    if ( h1 * p_vout->p_sys->i_row < p_vout->output.i_height )
    {
        unsigned int i_tmp;
        i_target_width = w2;        
        i_target_height = h2;
        i_vstart = 0;
        i_vend = p_vout->output.i_height;
        i_tmp = i_target_width * p_vout->p_sys->i_col;
        while( i_tmp < p_vout->output.i_width ) i_tmp += p_vout->p_sys->i_col;
        i_hstart = (( i_tmp - p_vout->output.i_width ) / 2)&~1;
        i_hstart_rounded  = ( ( i_tmp - p_vout->output.i_width ) % 2 ) ||
            ( ( ( i_tmp - p_vout->output.i_width ) / 2 ) & 1 );
        i_hend = i_hstart + p_vout->output.i_width;
    }
    else
    {
        unsigned int i_tmp;
        i_target_height = h1;
        i_target_width = w1;
        i_hstart = 0;
        i_hend = p_vout->output.i_width;
        i_tmp = i_target_height * p_vout->p_sys->i_row;
        while( i_tmp < p_vout->output.i_height ) i_tmp += p_vout->p_sys->i_row;
        i_vstart = ( ( i_tmp - p_vout->output.i_height ) / 2 ) & ~1;
        i_vstart_rounded  = ( ( i_tmp - p_vout->output.i_height ) % 2 ) ||
            ( ( ( i_tmp - p_vout->output.i_height ) / 2 ) & 1 );
        i_vend = i_vstart + p_vout->output.i_height;
    }
    msg_Dbg( p_vout, "target resolution %dx%d", i_target_width, i_target_height );

    /* Try to open the real video output */
    msg_Dbg( p_vout, "spawning the real video outputs" );

    p_vout->p_sys->i_vout = 0;
    msg_Dbg( p_vout, "target window (%d,%d)-(%d,%d)", i_hstart,i_vstart,i_hend,i_vend );
    

    i_top = 0;
    i_height = 0;
    for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
    {
        i_left = 0;
        i_top += i_height;
        for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
        {
            i_align = 0;

            if( i_col*i_target_width >= i_hstart &&
                (i_col+1)*i_target_width <= i_hend )
            {
                i_width = i_target_width;
            }
            else if( ( i_col + 1 ) * i_target_width < i_hstart ||
                     ( i_col * i_target_width ) > i_hend )
            {
                i_width = 0;                
            }
            else
            {
                i_width = ( i_target_width - i_hstart % i_target_width );
                if( i_col >= ( p_vout->p_sys->i_col / 2 ) )
                {
                    i_align |= VOUT_ALIGN_LEFT;
                    i_width -= i_hstart_rounded ? 2: 0;
                }
                else
                {
                    i_align |= VOUT_ALIGN_RIGHT;
                }
            }
            
            if( i_row * i_target_height >= i_vstart &&
                ( i_row + 1 ) * i_target_height <= i_vend )
            {
                i_height = i_target_height;
            }
            else if( ( i_row + 1 ) * i_target_height < i_vstart ||
                     ( i_row * i_target_height ) > i_vend )
            {
                i_height = 0;
            }
            else
            {
                i_height = ( i_target_height -
                             i_vstart%i_target_height );
                if(  i_row >= ( p_vout->p_sys->i_row / 2 ) )
                {
                    i_align |= VOUT_ALIGN_TOP;
                    i_height -= i_vstart_rounded ? 2: 0;
                }
                else
                {
                    i_align |= VOUT_ALIGN_BOTTOM;
                }
            }
            if( i_height == 0 || i_width == 0 )
            {
                p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active = VLC_FALSE;
            }

            p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
            p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
            p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_left = i_left;
            p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_top = i_top;
            i_left += i_width;

            if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
            {
                p_vout->p_sys->i_vout++;
                continue;
            }
            var_SetInteger( p_vout, "align", i_align );
            var_SetInteger( p_vout, "video-x", i_left + i_xpos - i_width);
            var_SetInteger( p_vout, "video-y", i_top + i_ypos );

            fmt.i_width = fmt.i_visible_width = i_width;
            fmt.i_height = fmt.i_visible_height = i_height;
            fmt.i_aspect = i_aspect * i_target_height / i_height *
                i_width / i_target_width;

            p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
                vout_Create( p_vout, &fmt );
            if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout )
            {
                msg_Err( p_vout, "failed to get %ix%i vout threads",
                                 p_vout->p_sys->i_col, p_vout->p_sys->i_row );
                RemoveAllVout( p_vout );
                return VLC_EGENERIC;
            }
            ADD_CALLBACKS(
                p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
                SendEvents );
            p_vout->p_sys->i_vout++;
        }
    }

    ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );

    ADD_PARENT_CALLBACKS( SendEventsToChild );

    return VLC_SUCCESS;
}