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diff --git a/boost/gil/extension/io/bmp/detail/supported_types.hpp b/boost/gil/extension/io/bmp/detail/supported_types.hpp
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+++ b/boost/gil/extension/io/bmp/detail/supported_types.hpp
@@ -0,0 +1,150 @@
+/*
+    Copyright 2008 Christian Henning
+    Use, modification and distribution are subject to the Boost Software License,
+    Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+    http://www.boost.org/LICENSE_1_0.txt).
+*/
+
+/*************************************************************************************************/
+
+#ifndef BOOST_GIL_EXTENSION_IO_BMP_DETAIL_SUPPORTED_TYPES_HPP
+#define BOOST_GIL_EXTENSION_IO_BMP_DETAIL_SUPPORTED_TYPES_HPP
+
+////////////////////////////////////////////////////////////////////////////////////////
+/// \file
+/// \brief 
+/// \author Christian Henning \n
+///
+/// \date   2008 \n
+///
+////////////////////////////////////////////////////////////////////////////////////////
+
+#include <boost/mpl/not.hpp>
+#include <boost/type_traits/is_same.hpp>
+
+#include <boost/gil/channel.hpp>
+#include <boost/gil/color_base.hpp>
+#include <boost/gil/bit_aligned_pixel_reference.hpp>
+#include <boost/gil/packed_pixel.hpp>
+
+#include <boost/gil/io/base.hpp>
+
+
+namespace boost { namespace gil { namespace detail {
+
+// Read support
+
+template< typename Channel
+        , typename ColorSpace
+        >
+struct bmp_read_support : read_support_false
+{
+    static const bmp_bits_per_pixel::type bpp = 0;
+};
+
+template< typename BitField
+        , bool     Mutable
+        >
+struct bmp_read_support< packed_dynamic_channel_reference< BitField
+                                                         , 1
+                                                         , Mutable
+                                                         >
+                       , gray_t
+                       > : read_support_true
+{
+    static const bmp_bits_per_pixel::type bpp = 1;
+};
+
+template< typename BitField
+        , bool     Mutable
+        >
+struct bmp_read_support< packed_dynamic_channel_reference< BitField
+                                                         , 4
+                                                         , Mutable
+                                                         >
+                       , gray_t
+                       > : read_support_true
+{
+    static const bmp_bits_per_pixel::type bpp = 4;
+};
+
+
+template<>
+struct bmp_read_support<uint8_t
+                       , gray_t
+                       > : read_support_true
+{
+    static const bmp_bits_per_pixel::type bpp = 8;
+};
+                      
+
+
+template<>
+struct bmp_read_support<uint8_t
+                       , rgb_t
+                       > : read_support_true
+{
+    static const bmp_bits_per_pixel::type bpp = 24;
+};
+
+
+template<>
+struct bmp_read_support<uint8_t
+                       , rgba_t
+                       > : read_support_true
+{
+    static const bmp_bits_per_pixel::type bpp = 32;
+};
+
+
+// Write support
+
+template< typename Channel
+        , typename ColorSpace
+        >
+struct bmp_write_support : write_support_false
+{};
+
+template<>
+struct bmp_write_support<uint8_t
+                        , rgb_t
+                        > : write_support_true {};
+
+template<>
+struct bmp_write_support<uint8_t
+                        , rgba_t
+                        > : write_support_true {};
+
+} // namespace detail
+
+
+template< typename Pixel >
+struct is_read_supported< Pixel
+                        , bmp_tag
+                        >
+    : mpl::bool_< detail::bmp_read_support< typename channel_type< Pixel >::type
+                                          , typename color_space_type< Pixel >::type
+                                          >::is_supported 
+                >
+{
+    typedef detail::bmp_read_support< typename channel_type< Pixel >::type
+                                    , typename color_space_type< Pixel >::type
+                                    > parent_t;
+
+    static const typename bmp_bits_per_pixel::type bpp = parent_t::bpp;
+};
+
+template< typename Pixel >
+struct is_write_supported< Pixel
+                         , bmp_tag
+                         >
+    : mpl::bool_< detail::bmp_write_support< typename channel_type< Pixel >::type
+                                           , typename color_space_type< Pixel >::type
+                                           >::is_supported
+                > {};
+
+} // namespace gil
+} // namespace boost
+
+
+#endif