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- //
- // Copyright 2009 Christian Henning
- //
- // Distributed under 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_JPEG_DETAIL_IS_ALLOWED_HPP
- #define BOOST_GIL_EXTENSION_IO_JPEG_DETAIL_IS_ALLOWED_HPP
- #include <boost/gil/extension/io/jpeg/tags.hpp>
- #include <type_traits>
- namespace boost { namespace gil { namespace detail {
- template< typename View >
- bool is_allowed( const image_read_info< jpeg_tag >& info
- , std::true_type // is read_and_no_convert
- )
- {
- if( info._color_space == JCS_YCbCr )
- {
- // We read JCS_YCbCr files as rgb.
- return ( is_read_supported< typename View::value_type
- , jpeg_tag
- >::_color_space == JCS_RGB );
- }
- return ( is_read_supported< typename View::value_type
- , jpeg_tag
- >::_color_space == info._color_space );
- }
- template< typename View >
- bool is_allowed( const image_read_info< jpeg_tag >& /* info */
- , std::false_type // is read_and_convert
- )
- {
- return true;
- }
- } // namespace detail
- } // namespace gil
- } // namespace boost
- #endif
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