Basic mosaic, video blending modules

 * picture.c picture.h : vout that copies the rendered image in a libvlc
                         object.
 * mosaic.c : sub filter that takes all the images created by the picture
              module and blends them over the current video

I think i still have loads of things to fix (like memleaks)

Simple vlm configuration file to see this work :
<<<<
new chan1 broadcast enabled
setup chan1 input somevideo1.avi
setup chan1 option vout=picture

new chan2 broadcast enabled
setup chan2 input somevideo2.avi
setup chan2 option vout=picture

new bg broadcast enabled
setup bg input somevideo0.avi
setup bg option sub-filter=mosaic

control bg play
control chan1 play
control chan2 play
>>>>

You just have to launch : ./vlc -I telnet --vlm-conf vlm.conf

configure.ac

@@ -986,6 +986,7 @@ VLC_ADD_PLUGINS([aout_file equalizer])
 VLC_ADD_PLUGINS([i420_rgb i420_yuy2 i422_yuy2 i420_ymga])
 VLC_ADD_PLUGINS([id3 playlist export sgimb m3u xtag])
 VLC_ADD_PLUGINS([rawvideo blend scale image logo])
+VLC_ADD_PLUGINS([picture mosaic])
 VLC_ADD_PLUGINS([wav araw subtitle vobsub adpcm a52sys dtssys au])
 VLC_ADD_PLUGINS([access_file access_udp access_tcp access_http access_mms])
 VLC_ADD_PLUGINS([access_ftp ipv4])

modules/video_filter/Modules.am

+SOURCES_mosaic = mosaic.c
 SOURCES_transform = transform.c
 SOURCES_invert = invert.c
 SOURCES_adjust = adjust.c

modules/video_filter/mosaic.c

+/*****************************************************************************
+* mosaic.c : Mosaic video plugin for vlc
+*****************************************************************************
+* Copyright (C) 2004 VideoLAN
+* $Id: $
+*
+* Authors: Antoine Cellerier <dionoea@via.ecp.fr>
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation; either version 2 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+*****************************************************************************/
+
+/*****************************************************************************
+* Preamble
+*****************************************************************************/
+#include <stdlib.h>                                      /* malloc(), free() */
+#include <string.h>
+#include <math.h>
+
+#include <vlc/vlc.h>
+#include <vlc/vout.h>
+
+#include "vlc_filter.h"
+#include "vlc_input.h"
+
+#include "vlc_image.h"
+
+/*****************************************************************************
+* Local prototypes
+*****************************************************************************/
+
+static int  CreateFilter    ( vlc_object_t * );
+static void DestroyFilter   ( vlc_object_t * );
+
+static subpicture_t *Filter( filter_t *, mtime_t );
+
+/*****************************************************************************
+* filter_sys_t : filter desriptor
+*****************************************************************************/
+
+#include "../video_output/picture.h"
+
+struct filter_sys_t
+{
+
+    image_handler_t *p_image;
+    image_handler_t *p_image2;
+    picture_t *p_pic;
+
+    int i_pos; /* mosaic positioning method */
+    int i_width, i_height; /* mosaic height and width */
+    int i_cols, i_rows; /* mosaic rows and cols */
+    int i_xoffset, i_yoffset; /* top left corner offset */
+    int i_vborder, i_hborder; /* border width/height between miniatures */
+    int i_alpha; /* subfilter alpha blending */
+
+};
+
+/*****************************************************************************
+* Module descriptor
+*****************************************************************************/
+
+#define ALPHA_TEXT N_("Mosaic alpha blending (0 -> 255)")
+#define ALPHA_LONGTEXT N_("Mosaic alpha blending (0 -> 255). default is 255")
+
+#define HEIGHT_TEXT N_("Mosaic height in pixels")
+#define WIDTH_TEXT N_("Mosaic width in pixels")
+#define XOFFSET_TEXT N_("Mosaic top left corner x coordinate")
+#define YOFFSET_TEXT N_("Mosaic top left corner y coordinate")
+#define VBORDER_TEXT N_("Mosaic vertical border width in pixels")
+#define HBORDER_TEXT N_("Mosaic horizontal border width in pixels")
+
+#define POS_TEXT N_("Mosaic positioning method")
+#define ROWS_TEXT N_("Mosaic number of rows")
+#define COLS_TEXT N_("Mosaic number of columns")
+
+static int pi_pos_values[] = { 0, 1 };
+static char * ppsz_pos_descriptions[] =
+{ N_("auto"), N_("fixed") };
+
+
+vlc_module_begin();
+    set_description( _("Mosaic video sub filter") );
+    set_shortname( N_("Mosaic") );
+    set_capability( "sub filter", 0 );
+    set_category( CAT_VIDEO );
+    set_subcategory( SUBCAT_VIDEO_SUBPIC );
+    set_callbacks( CreateFilter, DestroyFilter );
+
+    add_integer( "mosaic-alpha", 255, NULL, ALPHA_TEXT, ALPHA_LONGTEXT, VLC_FALSE );
+    add_integer( "mosaic-height", 100, NULL, HEIGHT_TEXT, HEIGHT_TEXT, VLC_FALSE );
+    add_integer( "mosaic-width", 100, NULL, WIDTH_TEXT, WIDTH_TEXT, VLC_FALSE );
+    add_integer( "mosaic-xoffset", 0, NULL, XOFFSET_TEXT, XOFFSET_TEXT, VLC_FALSE );
+    add_integer( "mosaic-yoffset", 0, NULL, YOFFSET_TEXT, YOFFSET_TEXT, VLC_FALSE );
+    add_integer( "mosaic-vborder", 0, NULL, VBORDER_TEXT, VBORDER_TEXT, VLC_FALSE );
+    add_integer( "mosaic-hborder", 0, NULL, HBORDER_TEXT, HBORDER_TEXT, VLC_FALSE );
+
+    add_integer( "mosaic-position", 0, NULL, POS_TEXT, POS_TEXT, VLC_TRUE );
+        change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
+    add_integer( "mosaic-rows", 2, NULL, ROWS_TEXT, ROWS_TEXT, VLC_FALSE );
+    add_integer( "mosaic-cols", 2, NULL, COLS_TEXT, COLS_TEXT, VLC_FALSE );
+vlc_module_end();
+
+
+/*****************************************************************************
+* CreateFiler: allocates mosaic video filter
+*****************************************************************************/
+
+static int CreateFilter( vlc_object_t *p_this )
+{
+    filter_t *p_filter = (filter_t *)p_this;
+    filter_sys_t *p_sys;
+
+    /* Allocate structure */
+    p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
+    if( p_sys == NULL )
+    {
+        msg_Err( p_filter, "out of memory" );
+        return VLC_ENOMEM;
+    }
+    p_sys->p_image = image_HandlerCreate( p_filter );
+    p_sys->p_image2 = image_HandlerCreate( p_filter );
+
+    p_filter->pf_sub_filter = Filter;
+    p_sys->p_pic = NULL;
+
+    p_sys->i_width = __MAX( 0, config_GetInt( p_filter, "mosaic-width" ) );
+    p_sys->i_height = __MAX( 0, config_GetInt( p_filter, "mosaic-height" ) );
+
+    p_sys->i_xoffset = __MAX( 0, config_GetInt( p_filter, "mosaic-xoffset" ) );
+    p_sys->i_yoffset = __MAX( 0, config_GetInt( p_filter, "mosaic-yoffset" ) );
+
+    p_sys->i_vborder = __MAX( 0, config_GetInt( p_filter, "mosaic-vborder" ) );
+    p_sys->i_hborder = __MAX( 0, config_GetInt( p_filter, "mosaic-hborder" ) );
+
+    p_sys->i_rows = __MAX( 1, config_GetInt( p_filter, "mosaic-rows") );
+    p_sys->i_cols = __MAX( 1, config_GetInt( p_filter, "mosaic-cols") );
+
+    p_sys->i_alpha = config_GetInt( p_filter, "mosaic-alpha" );
+    p_sys->i_alpha = __MIN( 255, __MAX( 0, p_sys->i_alpha ) );
+
+    p_sys->i_pos = config_GetInt( p_filter, "mosaic-position" );
+    if( p_sys->i_pos > 1 || p_sys->i_pos < 0 ) p_sys->i_pos = 0;
+
+    return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+* DestroyFilter: destroy mosaic video filter
+*****************************************************************************/
+
+static void DestroyFilter( vlc_object_t *p_this )
+{
+    filter_t *p_filter = (filter_t*)p_this;
+    filter_sys_t *p_sys = p_filter->p_sys;
+
+    image_HandlerDelete( p_sys->p_image );
+    image_HandlerDelete( p_sys->p_image2 );
+
+    if( p_sys->p_pic ) p_sys->p_pic->pf_release( p_sys->p_pic );
+    free( p_sys );
+}
+
+/*****************************************************************************
+* Filter
+*****************************************************************************/
+
+static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
+{
+
+    filter_sys_t *p_sys = p_filter->p_sys;
+    subpicture_t *p_spu;
+
+    libvlc_t *p_libvlc = p_filter->p_libvlc;
+    vlc_value_t val;
+    int i_index;
+
+    subpicture_region_t *p_region;
+    subpicture_region_t *p_region_prev = NULL;
+
+    struct picture_vout_t *p_picture_vout;
+
+    if( var_Get( p_libvlc, "p_picture_vout", &val ) )
+    {
+        return NULL;
+    }
+
+    /* Allocate the subpicture internal data. */
+    p_spu = p_filter->pf_sub_buffer_new( p_filter );
+    if( !p_spu )
+    {
+        return NULL;
+    }
+
+    p_picture_vout = val.p_address;
+
+    vlc_mutex_lock( &p_picture_vout->lock );
+
+    if( p_sys->i_pos == 0 ) /* use automatic positioning */
+    {
+        int i_numpics = 0;
+        for( i_index = 0 ;
+             i_index < p_picture_vout->i_picture_num ;
+             i_index ++ )
+        {
+            if( p_picture_vout->p_pic[i_index].i_status
+                           == PICTURE_VOUT_E_OCCUPIED ) {
+                i_numpics ++;
+            }
+        }
+        p_sys->i_rows = ((int)ceil(sqrt( (float)i_numpics )));
+        p_sys->i_cols = ( i_numpics%p_sys->i_rows == 0 ?
+                            i_numpics/p_sys->i_rows :
+                            i_numpics/p_sys->i_rows + 1 );
+    }
+
+    for( i_index = 0 ; i_index < p_picture_vout->i_picture_num ; i_index ++ )
+    {
+
+        video_format_t fmt_in = {0}, fmt_middle = {0}, fmt_out = {0};
+
+        picture_t *p_converted, *p_middle;
+
+        if(  p_picture_vout->p_pic[i_index].p_picture == NULL )
+        {
+            break;
+        }
+
+        if(  p_picture_vout->p_pic[i_index].i_status
+               == PICTURE_VOUT_E_AVAILABLE )
+        {
+            msg_Dbg( p_filter, "Picture Vout Element is empty");
+            break;
+        }
+
+
+        /* Convert the images */
+/*        fprintf (stderr, "Input image %ix%i %4.4s\n",
+                  p_picture_vout->p_pic[i_index].p_picture->format.i_width,
+                  p_picture_vout->p_pic[i_index].p_picture->format.i_height,
+                  (char *)&p_picture_vout->p_pic[i_index].p_picture->format.i_chroma );*/
+
+        fmt_in.i_chroma = p_picture_vout->p_pic[i_index].
+                                                p_picture->format.i_chroma;
+        fmt_in.i_height = p_picture_vout->p_pic[i_index].
+                                                p_picture->format.i_height;
+        fmt_in.i_width = p_picture_vout->p_pic[i_index].
+                                                p_picture->format.i_width;
+
+
+        fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
+        fmt_out.i_width = fmt_in.i_width *( p_sys->i_width / p_sys->i_cols ) / fmt_in.i_width;
+        fmt_out.i_height = fmt_in.i_height*( p_sys->i_height / p_sys->i_rows ) / fmt_in.i_height;
+        fmt_out.i_visible_width = fmt_out.i_width;
+        fmt_out.i_visible_height = fmt_out.i_height;
+
+        fmt_middle.i_chroma = fmt_in.i_chroma;
+        fmt_middle.i_visible_width = fmt_middle.i_width = fmt_out.i_width;
+        fmt_middle.i_visible_height = fmt_middle.i_height = fmt_out.i_height;
+
+        p_middle = image_Convert( p_sys->p_image,
+            p_picture_vout->p_pic[i_index].p_picture, &fmt_in, &fmt_middle );
+        if( !p_middle )
+        {
+            vlc_mutex_unlock( &p_picture_vout->lock );
+            return NULL;
+        }
+
+        p_converted = image_Convert( p_sys->p_image2,
+                 p_middle, &fmt_middle, &fmt_out );
+        if( !p_converted )
+        {
+            vlc_mutex_unlock( &p_picture_vout->lock );
+            return NULL;
+        }
+
+/*        fprintf( stderr, "Converted %ix%i %4.4s\n", p_converted->format.i_width, p_converted->format.i_height, (char *)&p_converted->format.i_chroma);*/
+
+
+        p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt_out);
+        if( !p_region )
+        {
+            msg_Err( p_filter, "cannot allocate SPU region" );
+            p_filter->pf_sub_buffer_del( p_filter, p_spu );
+            vlc_mutex_unlock( &p_picture_vout->lock );
+            return NULL;
+        }
+
+        p_region->i_x = p_sys->i_xoffset + ( i_index % p_sys->i_cols )
+                            * ( p_sys->i_width / p_sys->i_cols + p_sys->i_vborder );
+        p_region->i_y = p_sys->i_yoffset
+                        + ( ( i_index / p_sys->i_cols ) % p_sys->i_rows )
+                            * ( p_sys->i_height / p_sys->i_rows + p_sys->i_hborder );
+
+
+        if( p_region_prev == NULL ){
+            p_spu->p_region = p_region;
+        } else {
+            p_region_prev->p_next = p_region;
+        }
+
+        p_region_prev = p_region;
+
+        vout_CopyPicture( p_filter, &p_region->picture, p_converted );
+
+        p_middle->pf_release( p_middle );
+        p_converted->pf_release( p_converted );
+    }
+
+    vlc_mutex_unlock( &p_picture_vout->lock );
+
+    /* Initialize subpicture */
+    p_spu->i_channel = 0;
+    p_spu->i_start  = date;
+    p_spu->i_stop = 0;
+    p_spu->b_ephemer = VLC_TRUE;
+    p_spu->i_alpha = p_sys->i_alpha;
+
+    return p_spu;
+}

modules/video_output/Modules.am

@@ -12,3 +12,4 @@ SOURCES_hd1000v = hd1000v.cpp
 SOURCES_snapshot = snapshot.c
 SOURCES_opengl = opengl.c
 SOURCES_image = image.c
+SOURCES_picture = picture.c

modules/video_output/picture.c

+/*****************************************************************************
+ * picture.c:
+ *****************************************************************************
+ * Copyright (C) 1998-2001 VideoLAN
+ * $Id: $
+ *
+ * Authors: Antoine Cellerier <dionoea@videolan.org>
+ *
+ * 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>
+#include <vlc/aout.h>
+
+#include <sys/types.h>
+#ifndef WIN32
+#   include <netinet/in.h>                            /* BSD: struct in_addr */
+#endif
+
+/***********************************************************************
+*
+***********************************************************************/
+struct vout_sys_t
+{
+    int i_picture_pos; /* picture position in p_picture_vout */
+};
+
+#include "picture.h"
+
+/***********************************************************************
+* Local prototypes
+***********************************************************************/
+
+static int  Open    ( vlc_object_t * );
+static void Close   ( vlc_object_t * );
+static int  Init    ( vout_thread_t * );
+static void End     ( vout_thread_t * );
+static int  Manage  ( vout_thread_t * );
+static void Display ( vout_thread_t *, picture_t * );
+
+/***********************************************************************
+* Module descriptor
+***********************************************************************/
+vlc_module_begin();
+    set_description(_("VLC Internal Picture video output") );
+    set_capability( "video output", 70 );
+    set_callbacks( Open, Close );
+vlc_module_end();
+
+/***********************************************************************
+* Open : allocate video thread output method
+***********************************************************************/
+static int Open ( vlc_object_t *p_this )
+{
+    vout_thread_t *p_vout = (vout_thread_t *)p_this;
+    libvlc_t *p_libvlc = p_vout->p_libvlc;
+    struct picture_vout_t *p_picture_vout = NULL;
+    vlc_value_t val;
+
+    p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
+    if( p_vout->p_sys == NULL )
+    {
+        msg_Err( p_vout, "out of memory" );
+        return VLC_ENOMEM;
+    }
+
+    if( var_Get( p_libvlc, "p_picture_vout", &val ) != VLC_SUCCESS ){
+        msg_Err( p_vout, "p_picture_vout not found" );
+        p_picture_vout = malloc( sizeof( struct picture_vout_t ) );
+        if( p_vout->p_sys == NULL )
+        {
+            msg_Err( p_vout, "out of memory" );
+            return VLC_ENOMEM;
+        }
+
+        vlc_mutex_init( p_libvlc, &p_picture_vout->lock );
+        vlc_mutex_lock( &p_picture_vout->lock );
+        var_Create( p_libvlc, "p_picture_vout", VLC_VAR_ADDRESS );
+        val.p_address = p_picture_vout;
+        var_Set( p_libvlc, "p_picture_vout", val );
+
+        p_picture_vout->i_picture_num = 0;
+        p_picture_vout->p_pic = NULL;
+    } else {
+        p_picture_vout = val.p_address;
+        msg_Err( p_vout, "p_picture_vout found" );
+        vlc_mutex_lock( &p_picture_vout->lock );
+    }
+
+    p_vout->p_sys->i_picture_pos = p_picture_vout->i_picture_num;
+
+    p_picture_vout->p_pic = realloc( p_picture_vout->p_pic,
+      (p_picture_vout->i_picture_num+1) * sizeof( struct picture_vout_e_t ) );
+
+    p_picture_vout->p_pic[p_picture_vout->i_picture_num].p_picture = NULL;
+    p_picture_vout->p_pic[p_picture_vout->i_picture_num].i_status
+      = PICTURE_VOUT_E_OCCUPIED;
+    p_picture_vout->i_picture_num++;
+
+    vlc_mutex_unlock( &p_picture_vout->lock );
+
+    p_vout->pf_init = Init;
+    p_vout->pf_end = End;
+    p_vout->pf_manage = Manage;
+    p_vout->pf_render = NULL;
+    p_vout->pf_display = Display;
+
+    return VLC_SUCCESS;
+}
+
+
+/***********************************************************************
+* Init
+***********************************************************************/
+static int Init( vout_thread_t *p_vout )
+{
+
+    picture_t *p_pic;
+    int i_index;
+
+    I_OUTPUTPICTURES = 0;
+
+    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;
+
+    while( VLC_TRUE )
+    {
+        p_pic = NULL;
+
+        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;
+            }
+        }
+
+        if( p_pic == NULL )
+        {
+            return VLC_SUCCESS;
+        }
+
+        vout_AllocatePicture( VLC_OBJECT(p_vout), p_pic,
+                              p_vout->output.i_chroma,
+                              p_vout->output.i_width, p_vout->output.i_height,
+                              p_vout->output.i_aspect );
+
+        if( p_pic->i_planes == 0 )
+        {
+            return VLC_EGENERIC;
+        }
+
+        p_pic->i_status = DESTROYED_PICTURE;
+        p_pic->i_type   = DIRECT_PICTURE;
+
+        PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
+
+        I_OUTPUTPICTURES++;
+
+        //return VLC_SUCCESS;
+    }
+
+}
+
+/***********************************************************************
+* End
+***********************************************************************/
+static void End( vout_thread_t *p_vout )
+{
+    return;
+}
+
+/***********************************************************************
+* Close
+***********************************************************************/
+static void Close ( vlc_object_t *p_this )
+{
+    vout_thread_t * p_vout = (vout_thread_t *)p_this;
+
+    libvlc_t *p_libvlc = p_vout->p_libvlc;
+    struct picture_vout_t *p_picture_vout = NULL;
+    vlc_value_t val;
+    int i_flag=0, i;
+
+    msg_Dbg( p_vout, "Closing Picture Vout ...");
+    var_Get( p_libvlc, "p_picture_vout", &val );
+    p_picture_vout = val.p_address;
+
+    vlc_mutex_lock( &p_picture_vout->lock );
+
+    if( p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture )
+    {
+    /* FIXME */
+        free( p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture );
+    }
+    p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].i_status
+      = PICTURE_VOUT_E_AVAILABLE;
+
+    for( i = 0; i < p_picture_vout->i_picture_num; i ++)
+    {
+        if( p_picture_vout->p_pic[i].i_status == PICTURE_VOUT_E_OCCUPIED ) {
+            i_flag = 1;
+            break;
+        }
+    }
+
+    if( i_flag == 1 ){
+        vlc_mutex_unlock( &p_picture_vout->lock );
+        fprintf( stderr, "this wasn't the last picture\n");
+    } else {
+        free( p_picture_vout->p_pic );
+        vlc_mutex_unlock( &p_picture_vout->lock );
+        vlc_mutex_destroy( &p_picture_vout->lock );
+        var_Destroy( p_libvlc, "p_picture_vout" );
+        fprintf( stderr, "this was the last picture\n");
+    }
+
+    free( p_vout->p_sys );
+}
+
+/***********************************************************************
+* Manage
+***********************************************************************/
+static int Manage( vout_thread_t *p_vout )
+{
+    return VLC_SUCCESS;
+}
+
+/***********************************************************************
+* Display
+***********************************************************************/
+static void Display( vout_thread_t *p_vout, picture_t *p_pic )
+{
+    libvlc_t *p_libvlc = p_vout->p_libvlc;
+    vlc_value_t val;
+    struct picture_vout_t *p_picture_vout;
+
+    var_Get( p_libvlc, "p_picture_vout", &val );
+    p_picture_vout = val.p_address;
+
+    /*
+    src : p_pic
+    dest : p_picture_pout->p_pic[p_vout->p_sys.i_picture_pos]->p_picture
+    */
+
+
+    vlc_mutex_lock( &p_picture_vout->lock );
+    if( p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture )
+    {
+      // FIXME !!!
+      //nfprintf( stderr, "i_type : %i ( MEMORY_PICTURE == %i)\n", p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture->i_type, MEMORY_PICTURE );
+      if( p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture->i_type  == 200 /* MEMORY_PICTURE*/)
+      {
+        free( p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos]
+                        .p_picture->p_data_orig );
+      }
+      free( p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture );
+    }
+
+    p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture
+             = (picture_t*)malloc( sizeof( picture_t )) ;
+    vout_AllocatePicture( p_vout,
+         p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture,
+         p_pic->format.i_chroma,
+         p_pic->format.i_width,
+         p_pic->format.i_height,
+         VOUT_ASPECT_FACTOR * p_pic->format.i_height / p_pic->format.i_width );
+
+    p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture->i_status = DESTROYED_PICTURE;
+    p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture->i_type   = DIRECT_PICTURE;
+
+    vout_CopyPicture( p_vout,
+        p_picture_vout->p_pic[p_vout->p_sys->i_picture_pos].p_picture,
+        p_pic);
+
+    vlc_mutex_unlock( &p_picture_vout->lock );
+}

modules/video_output/picture.h

+#ifndef _PICTURE_VOUT_H
+#define _PICTURE_VOUT_H 1
+
+#define PICTURE_VOUT_E_AVAILABLE 0
+#define PICTURE_VOUT_E_OCCUPIED 1
+struct picture_vout_e_t {
+    picture_t *p_picture;
+    int i_status;
+};
+struct picture_vout_t
+{
+    vlc_mutex_t lock;
+    int i_picture_num;
+    struct picture_vout_e_t *p_pic;
+};
+
+#endif