Moved picture_t related functions to its own file.

src/Makefile.am

@@ -425,6 +425,7 @@ SOURCES_libvlc_common = \
 	misc/block.c \
 	misc/fourcc.c \
 	misc/es_format.c \
+	misc/picture.c \
 	misc/picture_fifo.c \
 	misc/picture_pool.c \
 	modules/modules.h \

src/misc/picture.c

+/*****************************************************************************
+ * picture.c : picture management functions
+ *****************************************************************************
+ * Copyright (C) 2000-2010 the VideoLAN team
+ * Copyright (C) 2009-2010 Laurent Aimar
+ * $Id$
+ *
+ * Authors: Vincent Seguin <seguin@via.ecp.fr>
+ *          Samuel Hocevar <sam@zoy.org>
+ *          Laurent Aimar <fenrir _AT_ videolan _DOT_ 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <assert.h>
+
+#include <vlc_common.h>
+#include <vlc_picture.h>
+#include <vlc_image.h>
+#include <vlc_block.h>
+
+/**
+ * Allocate a new picture in the heap.
+ *
+ * This function allocates a fake direct buffer in memory, which can be
+ * used exactly like a video buffer. The video output thread then manages
+ * how it gets displayed.
+ */
+static int vout_AllocatePicture( picture_t *p_pic,
+                                 vlc_fourcc_t i_chroma,
+                                 int i_width, int i_height,
+                                 int i_sar_num, int i_sar_den )
+{
+    /* Make sure the real dimensions are a multiple of 16 */
+    if( picture_Setup( p_pic, i_chroma, i_width, i_height,
+                       i_sar_num, i_sar_den ) != VLC_SUCCESS )
+        return VLC_EGENERIC;
+
+    /* Calculate how big the new image should be */
+    size_t i_bytes = 0;
+    for( int i = 0; i < p_pic->i_planes; i++ )
+    {
+        const plane_t *p = &p_pic->p[i];
+
+        if( p->i_pitch <= 0 || p->i_lines <= 0 ||
+            p->i_pitch > (SIZE_MAX - i_bytes)/p->i_lines )
+        {
+            p_pic->i_planes = 0;
+            return VLC_ENOMEM;
+        }
+        i_bytes += p->i_pitch * p->i_lines;
+    }
+
+    uint8_t *p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
+    if( !p_data )
+    {
+        p_pic->i_planes = 0;
+        return VLC_EGENERIC;
+    }
+
+    /* Fill the p_pixels field for each plane */
+    p_pic->p[0].p_pixels = p_data;
+    for( int i = 1; i < p_pic->i_planes; i++ )
+    {
+        p_pic->p[i].p_pixels = &p_pic->p[i-1].p_pixels[ p_pic->p[i-1].i_lines *
+                                                        p_pic->p[i-1].i_pitch ];
+    }
+
+    return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ *
+ *****************************************************************************/
+static void PictureReleaseCallback( picture_t *p_picture )
+{
+    if( --p_picture->i_refcount > 0 )
+        return;
+    picture_Delete( p_picture );
+}
+
+/*****************************************************************************
+ *
+ *****************************************************************************/
+void picture_Reset( picture_t *p_picture )
+{
+    /* */
+    p_picture->date = VLC_TS_INVALID;
+    p_picture->b_force = false;
+    p_picture->b_progressive = false;
+    p_picture->i_nb_fields = 0;
+    p_picture->b_top_field_first = false;
+    picture_CleanupQuant( p_picture );
+}
+
+/*****************************************************************************
+ *
+ *****************************************************************************/
+static int LCM( int a, int b )
+{
+    return a * b / GCD( a, b );
+}
+
+int picture_Setup( picture_t *p_picture, vlc_fourcc_t i_chroma,
+                   int i_width, int i_height, int i_sar_num, int i_sar_den )
+{
+    /* Store default values */
+    p_picture->i_planes = 0;
+    for( unsigned i = 0; i < VOUT_MAX_PLANES; i++ )
+    {
+        plane_t *p = &p_picture->p[i];
+        p->p_pixels = NULL;
+        p->i_pixel_pitch = 0;
+    }
+
+    p_picture->pf_release = NULL;
+    p_picture->p_release_sys = NULL;
+    p_picture->i_refcount = 0;
+
+    p_picture->i_qtype = QTYPE_NONE;
+    p_picture->i_qstride = 0;
+    p_picture->p_q = NULL;
+
+    video_format_Setup( &p_picture->format, i_chroma, i_width, i_height,
+                        i_sar_num, i_sar_den );
+
+    const vlc_chroma_description_t *p_dsc =
+        vlc_fourcc_GetChromaDescription( p_picture->format.i_chroma );
+    if( !p_dsc )
+        return VLC_EGENERIC;
+
+    /* We want V (width/height) to respect:
+        (V * p_dsc->p[i].w.i_num) % p_dsc->p[i].w.i_den == 0
+        (V * p_dsc->p[i].w.i_num/p_dsc->p[i].w.i_den * p_dsc->i_pixel_size) % 16 == 0
+       Which is respected if you have
+       V % lcm( p_dsc->p[0..planes].w.i_den * 16) == 0
+    */
+    int i_modulo_w = 1;
+    int i_modulo_h = 1;
+    int i_ratio_h  = 1;
+    for( unsigned i = 0; i < p_dsc->plane_count; i++ )
+    {
+        i_modulo_w = LCM( i_modulo_w, 16 * p_dsc->p[i].w.den );
+        i_modulo_h = LCM( i_modulo_h, 16 * p_dsc->p[i].h.den );
+        if( i_ratio_h < p_dsc->p[i].h.den )
+            i_ratio_h = p_dsc->p[i].h.den;
+    }
+
+    const int i_width_aligned  = ( i_width  + i_modulo_w - 1 ) / i_modulo_w * i_modulo_w;
+    const int i_height_aligned = ( i_height + i_modulo_h - 1 ) / i_modulo_h * i_modulo_h;
+    const int i_height_extra   = 2 * i_ratio_h; /* This one is a hack for some ASM functions */
+    for( unsigned i = 0; i < p_dsc->plane_count; i++ )
+    {
+        plane_t *p = &p_picture->p[i];
+
+        p->i_lines         = (i_height_aligned + i_height_extra ) * p_dsc->p[i].h.num / p_dsc->p[i].h.den;
+        p->i_visible_lines = i_height * p_dsc->p[i].h.num / p_dsc->p[i].h.den;
+        p->i_pitch         = i_width_aligned * p_dsc->p[i].w.num / p_dsc->p[i].w.den * p_dsc->pixel_size;
+        p->i_visible_pitch = i_width * p_dsc->p[i].w.num / p_dsc->p[i].w.den * p_dsc->pixel_size;
+        p->i_pixel_pitch   = p_dsc->pixel_size;
+
+        assert( (p->i_pitch % 16) == 0 );
+    }
+    p_picture->i_planes  = p_dsc->plane_count;
+
+    return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ *
+ *****************************************************************************/
+picture_t *picture_NewFromResource( const video_format_t *p_fmt, const picture_resource_t *p_resource )
+{
+    video_format_t fmt = *p_fmt;
+
+    /* It is needed to be sure all information are filled */
+    video_format_Setup( &fmt, p_fmt->i_chroma,
+                              p_fmt->i_width, p_fmt->i_height,
+                              p_fmt->i_sar_num, p_fmt->i_sar_den );
+
+    /* */
+    picture_t *p_picture = calloc( 1, sizeof(*p_picture) );
+    if( !p_picture )
+        return NULL;
+
+    if( p_resource )
+    {
+        if( picture_Setup( p_picture, fmt.i_chroma, fmt.i_width, fmt.i_height,
+                           fmt.i_sar_num, fmt.i_sar_den ) )
+        {
+            free( p_picture );
+            return NULL;
+        }
+        p_picture->p_sys = p_resource->p_sys;
+
+        for( int i = 0; i < p_picture->i_planes; i++ )
+        {
+            p_picture->p[i].p_pixels = p_resource->p[i].p_pixels;
+            p_picture->p[i].i_lines  = p_resource->p[i].i_lines;
+            p_picture->p[i].i_pitch  = p_resource->p[i].i_pitch;
+        }
+    }
+    else
+    {
+        if( vout_AllocatePicture( p_picture,
+                                  fmt.i_chroma, fmt.i_width, fmt.i_height,
+                                  fmt.i_sar_num, fmt.i_sar_den ) )
+        {
+            free( p_picture );
+            return NULL;
+        }
+    }
+    /* */
+    p_picture->format = fmt;
+    p_picture->i_refcount = 1;
+    p_picture->pf_release = PictureReleaseCallback;
+
+    return p_picture;
+}
+picture_t *picture_NewFromFormat( const video_format_t *p_fmt )
+{
+    return picture_NewFromResource( p_fmt, NULL );
+}
+picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_sar_num, int i_sar_den )
+{
+    video_format_t fmt;
+
+    memset( &fmt, 0, sizeof(fmt) );
+    video_format_Setup( &fmt, i_chroma, i_width, i_height,
+                        i_sar_num, i_sar_den );
+
+    return picture_NewFromFormat( &fmt );
+}
+
+/*****************************************************************************
+ *
+ *****************************************************************************/
+void picture_Delete( picture_t *p_picture )
+{
+    assert( p_picture && p_picture->i_refcount == 0 );
+    assert( p_picture->p_release_sys == NULL );
+
+    free( p_picture->p_q );
+    free( p_picture->p_data_orig );
+    free( p_picture->p_sys );
+    free( p_picture );
+}
+
+/*****************************************************************************
+ *
+ *****************************************************************************/
+void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
+{
+    int i;
+
+    for( i = 0; i < p_src->i_planes ; i++ )
+        plane_CopyPixels( p_dst->p+i, p_src->p+i );
+}
+
+void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
+{
+    const unsigned i_width  = __MIN( p_dst->i_visible_pitch,
+                                     p_src->i_visible_pitch );
+    const unsigned i_height = __MIN( p_dst->i_visible_lines,
+                                     p_src->i_visible_lines );
+
+    if( p_src->i_pitch == p_dst->i_pitch )
+    {
+        /* There are margins, but with the same width : perfect ! */
+        vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
+                    p_src->i_pitch * i_height );
+    }
+    else
+    {
+        /* We need to proceed line by line */
+        uint8_t *p_in = p_src->p_pixels;
+        uint8_t *p_out = p_dst->p_pixels;
+        int i_line;
+
+        assert( p_in );
+        assert( p_out );
+
+        for( i_line = i_height; i_line--; )
+        {
+            vlc_memcpy( p_out, p_in, i_width );
+            p_in += p_src->i_pitch;
+            p_out += p_dst->i_pitch;
+        }
+    }
+}
+
+/*****************************************************************************
+ *
+ *****************************************************************************/
+int picture_Export( vlc_object_t *p_obj,
+                    block_t **pp_image,
+                    video_format_t *p_fmt,
+                    picture_t *p_picture,
+                    vlc_fourcc_t i_format,
+                    int i_override_width, int i_override_height )
+{
+    /* */
+    video_format_t fmt_in = p_picture->format;
+    if( fmt_in.i_sar_num <= 0 || fmt_in.i_sar_den <= 0 )
+    {
+        fmt_in.i_sar_num =
+        fmt_in.i_sar_den = 1;
+    }
+
+    /* */
+    video_format_t fmt_out;
+    memset( &fmt_out, 0, sizeof(fmt_out) );
+    fmt_out.i_sar_num =
+    fmt_out.i_sar_den = 1;
+    fmt_out.i_chroma  = i_format;
+
+    /* compute original width/height */
+    unsigned int i_original_width;
+    unsigned int i_original_height;
+    if( fmt_in.i_sar_num >= fmt_in.i_sar_den )
+    {
+        i_original_width = (int64_t)fmt_in.i_width * fmt_in.i_sar_num / fmt_in.i_sar_den;
+        i_original_height = fmt_in.i_height;
+    }
+    else
+    {
+        i_original_width =  fmt_in.i_width;
+        i_original_height = (int64_t)fmt_in.i_height * fmt_in.i_sar_den / fmt_in.i_sar_num;
+    }
+
+    /* */
+    fmt_out.i_width  = ( i_override_width < 0 ) ?
+                       i_original_width : i_override_width;
+    fmt_out.i_height = ( i_override_height < 0 ) ?
+                       i_original_height : i_override_height;
+
+    /* scale if only one direction is provided */
+    if( fmt_out.i_height == 0 && fmt_out.i_width > 0 )
+    {
+        fmt_out.i_height = fmt_in.i_height * fmt_out.i_width
+                     * fmt_in.i_sar_den / fmt_in.i_width / fmt_in.i_sar_num;
+    }
+    else if( fmt_out.i_width == 0 && fmt_out.i_height > 0 )
+    {
+        fmt_out.i_width  = fmt_in.i_width * fmt_out.i_height
+                     * fmt_in.i_sar_num / fmt_in.i_height / fmt_in.i_sar_den;
+    }
+
+    image_handler_t *p_image = image_HandlerCreate( p_obj );
+
+    block_t *p_block = image_Write( p_image, p_picture, &fmt_in, &fmt_out );
+
+    image_HandlerDelete( p_image );
+
+    if( !p_block )
+        return VLC_EGENERIC;
+
+    p_block->i_pts =
+    p_block->i_dts = p_picture->date;
+
+    if( p_fmt )
+        *p_fmt = fmt_out;
+    *pp_image = p_block;
+
+    return VLC_SUCCESS;
+}
+

src/video_output/vout_pictures.c

 /*****************************************************************************
- * vout_pictures.c : picture management functions
+ * vout_pictures.c :
  *****************************************************************************
- * Copyright (C) 2000-2004 the VideoLAN team
+ * Copyright (C) 2009-2010 Laurent Aimar
  * $Id$
  *
- * Authors: Vincent Seguin <seguin@via.ecp.fr>
- *          Samuel Hocevar <sam@zoy.org>
+ * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ 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
@@ -34,9 +33,6 @@
 #include <vlc_common.h>
 #include <libvlc.h>
 #include <vlc_vout.h>
-#include <vlc_filter.h>
-#include <vlc_image.h>
-#include <vlc_block.h>
 #include <vlc_picture_fifo.h>
 #include <vlc_picture_pool.h>
 
@@ -112,349 +108,3 @@ void vout_HoldPicture( vout_thread_t *p_vout, picture_t *p_pic )
     vlc_mutex_unlock( &p_vout->p->picture_lock );
 }
 
-/**
- * Allocate a new picture in the heap.
- *
- * This function allocates a fake direct buffer in memory, which can be
- * used exactly like a video buffer. The video output thread then manages
- * how it gets displayed.
- */
-static int vout_AllocatePicture( picture_t *p_pic,
-                                 vlc_fourcc_t i_chroma,
-                                 int i_width, int i_height,
-                                 int i_sar_num, int i_sar_den )
-{
-    /* Make sure the real dimensions are a multiple of 16 */
-    if( picture_Setup( p_pic, i_chroma, i_width, i_height,
-                       i_sar_num, i_sar_den ) != VLC_SUCCESS )
-        return VLC_EGENERIC;
-
-    /* Calculate how big the new image should be */
-    size_t i_bytes = 0;
-    for( int i = 0; i < p_pic->i_planes; i++ )
-    {
-        const plane_t *p = &p_pic->p[i];
-
-        if( p->i_pitch <= 0 || p->i_lines <= 0 ||
-            p->i_pitch > (SIZE_MAX - i_bytes)/p->i_lines )
-        {
-            p_pic->i_planes = 0;
-            return VLC_ENOMEM;
-        }
-        i_bytes += p->i_pitch * p->i_lines;
-    }
-
-    uint8_t *p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
-    if( !p_data )
-    {
-        p_pic->i_planes = 0;
-        return VLC_EGENERIC;
-    }
-
-    /* Fill the p_pixels field for each plane */
-    p_pic->p[0].p_pixels = p_data;
-    for( int i = 1; i < p_pic->i_planes; i++ )
-    {
-        p_pic->p[i].p_pixels = &p_pic->p[i-1].p_pixels[ p_pic->p[i-1].i_lines *
-                                                        p_pic->p[i-1].i_pitch ];
-    }
-
-    return VLC_SUCCESS;
-}
-
-/*****************************************************************************
- *
- *****************************************************************************/
-static void PictureReleaseCallback( picture_t *p_picture )
-{
-    if( --p_picture->i_refcount > 0 )
-        return;
-    picture_Delete( p_picture );
-}
-
-/*****************************************************************************
- *
- *****************************************************************************/
-void picture_Reset( picture_t *p_picture )
-{
-    /* */
-    p_picture->date = VLC_TS_INVALID;
-    p_picture->b_force = false;
-    p_picture->b_progressive = false;
-    p_picture->i_nb_fields = 0;
-    p_picture->b_top_field_first = false;
-    picture_CleanupQuant( p_picture );
-}
-
-/*****************************************************************************
- *
- *****************************************************************************/
-static int LCM( int a, int b )
-{
-    return a * b / GCD( a, b );
-}
-
-int picture_Setup( picture_t *p_picture, vlc_fourcc_t i_chroma,
-                   int i_width, int i_height, int i_sar_num, int i_sar_den )
-{
-    /* Store default values */
-    p_picture->i_planes = 0;
-    for( unsigned i = 0; i < VOUT_MAX_PLANES; i++ )
-    {
-        plane_t *p = &p_picture->p[i];
-        p->p_pixels = NULL;
-        p->i_pixel_pitch = 0;
-    }
-
-    p_picture->pf_release = NULL;
-    p_picture->p_release_sys = NULL;
-    p_picture->i_refcount = 0;
-
-    p_picture->i_qtype = QTYPE_NONE;
-    p_picture->i_qstride = 0;
-    p_picture->p_q = NULL;
-
-    video_format_Setup( &p_picture->format, i_chroma, i_width, i_height,
-                        i_sar_num, i_sar_den );
-
-    const vlc_chroma_description_t *p_dsc =
-        vlc_fourcc_GetChromaDescription( p_picture->format.i_chroma );
-    if( !p_dsc )
-        return VLC_EGENERIC;
-
-    /* We want V (width/height) to respect:
-        (V * p_dsc->p[i].w.i_num) % p_dsc->p[i].w.i_den == 0
-        (V * p_dsc->p[i].w.i_num/p_dsc->p[i].w.i_den * p_dsc->i_pixel_size) % 16 == 0
-       Which is respected if you have
-       V % lcm( p_dsc->p[0..planes].w.i_den * 16) == 0
-    */
-    int i_modulo_w = 1;
-    int i_modulo_h = 1;
-    int i_ratio_h  = 1;
-    for( unsigned i = 0; i < p_dsc->plane_count; i++ )
-    {
-        i_modulo_w = LCM( i_modulo_w, 16 * p_dsc->p[i].w.den );
-        i_modulo_h = LCM( i_modulo_h, 16 * p_dsc->p[i].h.den );
-        if( i_ratio_h < p_dsc->p[i].h.den )
-            i_ratio_h = p_dsc->p[i].h.den;
-    }
-
-    const int i_width_aligned  = ( i_width  + i_modulo_w - 1 ) / i_modulo_w * i_modulo_w;
-    const int i_height_aligned = ( i_height + i_modulo_h - 1 ) / i_modulo_h * i_modulo_h;
-    const int i_height_extra   = 2 * i_ratio_h; /* This one is a hack for some ASM functions */
-    for( unsigned i = 0; i < p_dsc->plane_count; i++ )
-    {
-        plane_t *p = &p_picture->p[i];
-
-        p->i_lines         = (i_height_aligned + i_height_extra ) * p_dsc->p[i].h.num / p_dsc->p[i].h.den;
-        p->i_visible_lines = i_height * p_dsc->p[i].h.num / p_dsc->p[i].h.den;
-        p->i_pitch         = i_width_aligned * p_dsc->p[i].w.num / p_dsc->p[i].w.den * p_dsc->pixel_size;
-        p->i_visible_pitch = i_width * p_dsc->p[i].w.num / p_dsc->p[i].w.den * p_dsc->pixel_size;
-        p->i_pixel_pitch   = p_dsc->pixel_size;
-
-        assert( (p->i_pitch % 16) == 0 );
-    }
-    p_picture->i_planes  = p_dsc->plane_count;
-
-    return VLC_SUCCESS;
-}
-
-/*****************************************************************************
- *
- *****************************************************************************/
-picture_t *picture_NewFromResource( const video_format_t *p_fmt, const picture_resource_t *p_resource )
-{
-    video_format_t fmt = *p_fmt;
-
-    /* It is needed to be sure all information are filled */
-    video_format_Setup( &fmt, p_fmt->i_chroma,
-                              p_fmt->i_width, p_fmt->i_height,
-                              p_fmt->i_sar_num, p_fmt->i_sar_den );
-
-    /* */
-    picture_t *p_picture = calloc( 1, sizeof(*p_picture) );
-    if( !p_picture )
-        return NULL;
-
-    if( p_resource )
-    {
-        if( picture_Setup( p_picture, fmt.i_chroma, fmt.i_width, fmt.i_height,
-                           fmt.i_sar_num, fmt.i_sar_den ) )
-        {
-            free( p_picture );
-            return NULL;
-        }
-        p_picture->p_sys = p_resource->p_sys;
-
-        for( int i = 0; i < p_picture->i_planes; i++ )
-        {
-            p_picture->p[i].p_pixels = p_resource->p[i].p_pixels;
-            p_picture->p[i].i_lines  = p_resource->p[i].i_lines;
-            p_picture->p[i].i_pitch  = p_resource->p[i].i_pitch;
-        }
-    }
-    else
-    {
-        if( vout_AllocatePicture( p_picture,
-                                  fmt.i_chroma, fmt.i_width, fmt.i_height,
-                                  fmt.i_sar_num, fmt.i_sar_den ) )
-        {
-            free( p_picture );
-            return NULL;
-        }
-    }
-    /* */
-    p_picture->format = fmt;
-    p_picture->i_refcount = 1;
-    p_picture->pf_release = PictureReleaseCallback;
-
-    return p_picture;
-}
-picture_t *picture_NewFromFormat( const video_format_t *p_fmt )
-{
-    return picture_NewFromResource( p_fmt, NULL );
-}
-picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_sar_num, int i_sar_den )
-{
-    video_format_t fmt;
-
-    memset( &fmt, 0, sizeof(fmt) );
-    video_format_Setup( &fmt, i_chroma, i_width, i_height,
-                        i_sar_num, i_sar_den );
-
-    return picture_NewFromFormat( &fmt );
-}
-
-/*****************************************************************************
- *
- *****************************************************************************/
-void picture_Delete( picture_t *p_picture )
-{
-    assert( p_picture && p_picture->i_refcount == 0 );
-    assert( p_picture->p_release_sys == NULL );
-
-    free( p_picture->p_q );
-    free( p_picture->p_data_orig );
-    free( p_picture->p_sys );
-    free( p_picture );
-}
-
-/*****************************************************************************
- *
- *****************************************************************************/
-void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
-{
-    int i;
-
-    for( i = 0; i < p_src->i_planes ; i++ )
-        plane_CopyPixels( p_dst->p+i, p_src->p+i );
-}
-
-void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
-{
-    const unsigned i_width  = __MIN( p_dst->i_visible_pitch,
-                                     p_src->i_visible_pitch );
-    const unsigned i_height = __MIN( p_dst->i_visible_lines,
-                                     p_src->i_visible_lines );
-
-    if( p_src->i_pitch == p_dst->i_pitch )
-    {
-        /* There are margins, but with the same width : perfect ! */
-        vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
-                    p_src->i_pitch * i_height );
-    }
-    else
-    {
-        /* We need to proceed line by line */
-        uint8_t *p_in = p_src->p_pixels;
-        uint8_t *p_out = p_dst->p_pixels;
-        int i_line;
-
-        assert( p_in );
-        assert( p_out );
-
-        for( i_line = i_height; i_line--; )
-        {
-            vlc_memcpy( p_out, p_in, i_width );
-            p_in += p_src->i_pitch;
-            p_out += p_dst->i_pitch;
-        }
-    }
-}
-
-/*****************************************************************************
- *
- *****************************************************************************/
-int picture_Export( vlc_object_t *p_obj,
-                    block_t **pp_image,
-                    video_format_t *p_fmt,
-                    picture_t *p_picture,
-                    vlc_fourcc_t i_format,
-                    int i_override_width, int i_override_height )
-{
-    /* */
-    video_format_t fmt_in = p_picture->format;
-    if( fmt_in.i_sar_num <= 0 || fmt_in.i_sar_den <= 0 )
-    {
-        fmt_in.i_sar_num =
-        fmt_in.i_sar_den = 1;
-    }
-
-    /* */
-    video_format_t fmt_out;
-    memset( &fmt_out, 0, sizeof(fmt_out) );
-    fmt_out.i_sar_num =
-    fmt_out.i_sar_den = 1;
-    fmt_out.i_chroma  = i_format;
-
-    /* compute original width/height */
-    unsigned int i_original_width;
-    unsigned int i_original_height;
-    if( fmt_in.i_sar_num >= fmt_in.i_sar_den )
-    {
-        i_original_width = (int64_t)fmt_in.i_width * fmt_in.i_sar_num / fmt_in.i_sar_den;
-        i_original_height = fmt_in.i_height;
-    }
-    else
-    {
-        i_original_width =  fmt_in.i_width;
-        i_original_height = (int64_t)fmt_in.i_height * fmt_in.i_sar_den / fmt_in.i_sar_num;
-    }
-
-    /* */
-    fmt_out.i_width  = ( i_override_width < 0 ) ?
-                       i_original_width : i_override_width;
-    fmt_out.i_height = ( i_override_height < 0 ) ?
-                       i_original_height : i_override_height;
-
-    /* scale if only one direction is provided */
-    if( fmt_out.i_height == 0 && fmt_out.i_width > 0 )
-    {
-        fmt_out.i_height = fmt_in.i_height * fmt_out.i_width
-                     * fmt_in.i_sar_den / fmt_in.i_width / fmt_in.i_sar_num;
-    }
-    else if( fmt_out.i_width == 0 && fmt_out.i_height > 0 )
-    {
-        fmt_out.i_width  = fmt_in.i_width * fmt_out.i_height
-                     * fmt_in.i_sar_num / fmt_in.i_height / fmt_in.i_sar_den;
-    }
-
-    image_handler_t *p_image = image_HandlerCreate( p_obj );
-
-    block_t *p_block = image_Write( p_image, p_picture, &fmt_in, &fmt_out );
-
-    image_HandlerDelete( p_image );
-
-    if( !p_block )
-        return VLC_EGENERIC;
-
-    p_block->i_pts =
-    p_block->i_dts = p_picture->date;
-
-    if( p_fmt )
-        *p_fmt = fmt_out;
-    *pp_image = p_block;
-
-    return VLC_SUCCESS;
-}
-