boost/gil/io/read_and_convert_view.hpp
// // Copyright 2007-2012 Christian Henning, Andreas Pokorny, Lubomir Bourdev // // 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_IO_READ_AND_CONVERT_VIEW_HPP #define BOOST_GIL_IO_READ_AND_CONVERT_VIEW_HPP #include <boost/gil/io/base.hpp> #include <boost/gil/io/conversion_policies.hpp> #include <boost/gil/io/device.hpp> #include <boost/gil/io/get_reader.hpp> #include <boost/gil/io/path_spec.hpp> #include <boost/mpl/and.hpp> #include <boost/type_traits/is_base_and_derived.hpp> #include <boost/utility/enable_if.hpp> namespace boost{ namespace gil { /// \ingroup IO /// \brief Reads and color-converts an image view. No memory is allocated. /// \param reader An image reader. /// \param img The image in which the data is read into. /// \param settings Specifies read settings depending on the image format. /// \param cc Color converter function object. /// \throw std::ios_base::failure template< typename Reader , typename View > inline void read_and_convert_view( Reader& reader , const View& view , typename enable_if< mpl::and_< detail::is_reader< Reader > , is_format_tag< typename Reader::format_tag_t > > >::type* /* ptr */ = 0 ) { reader.check_image_size( view.dimensions() ); reader.init_view( view , reader._settings ); reader.apply( view ); } /// \brief Reads and color-converts an image view. No memory is allocated. /// \param file It's a device. Must satisfy is_input_device metafunction. /// \param view The image view in which the data is read into. /// \param settings Specifies read settings depending on the image format. /// \param cc Color converter function object. /// \throw std::ios_base::failure template< typename Device , typename View , typename ColorConverter , typename FormatTag > inline void read_and_convert_view( Device& device , const View& view , const image_read_settings< FormatTag >& settings , const ColorConverter& cc , typename enable_if< mpl::and_< detail::is_read_device< FormatTag , Device > , is_format_tag< FormatTag > > >::type* /* ptr */ = 0 ) { typedef typename get_reader< Device , FormatTag , detail::read_and_convert< ColorConverter > >::type reader_t; reader_t reader = make_reader( device , settings , detail::read_and_convert< ColorConverter >( cc ) ); read_and_convert_view( reader , view ); } /// \brief Reads and color-converts an image view. No memory is allocated. /// \param file_name File name. Must satisfy is_supported_path_spec metafunction. /// \param view The image view in which the data is read into. /// \param settings Specifies read settings depending on the image format. /// \param cc Color converter function object. /// \throw std::ios_base::failure template < typename String , typename View , typename ColorConverter , typename FormatTag > inline void read_and_convert_view( const String& file_name , const View& view , const image_read_settings< FormatTag >& settings , const ColorConverter& cc , typename enable_if< mpl::and_< is_format_tag< FormatTag > , detail::is_supported_path_spec< String > > >::type* /* ptr */ = 0 ) { typedef typename get_reader< String , FormatTag , detail::read_and_convert< ColorConverter > >::type reader_t; reader_t reader = make_reader( file_name , settings , detail::read_and_convert< ColorConverter >( cc ) ); read_and_convert_view( reader , view ); } /// \brief Reads and color-converts an image view. No memory is allocated. /// \param file_name File name. Must satisfy is_supported_path_spec metafunction. /// \param view The image view in which the data is read into. /// \param cc Color converter function object. /// \param tag Defines the image format. Must satisfy is_format_tag metafunction. /// \throw std::ios_base::failure template < typename String , typename View , typename ColorConverter , typename FormatTag > inline void read_and_convert_view( const String& file_name , const View& view , const ColorConverter& cc , const FormatTag& tag , typename enable_if< mpl::and_< is_format_tag< FormatTag > , detail::is_supported_path_spec< String > > >::type* /* ptr */ = 0 ) { typedef typename get_reader< String , FormatTag , detail::read_and_convert< ColorConverter > >::type reader_t; reader_t reader = make_reader( file_name , tag , detail::read_and_convert< ColorConverter >( cc ) ); read_and_convert_view( reader , view ); } /// \brief Reads and color-converts an image view. No memory is allocated. /// \param file It's a device. Must satisfy is_input_device metafunction or is_adaptable_input_device. /// \param view The image view in which the data is read into. /// \param cc Color converter function object. /// \param tag Defines the image format. Must satisfy is_format_tag metafunction. /// \throw std::ios_base::failure template < typename Device , typename View , typename ColorConverter , typename FormatTag > inline void read_and_convert_view( Device& device , const View& view , const ColorConverter& cc , const FormatTag& tag , typename enable_if< mpl::and_< detail::is_read_device< FormatTag , Device > , is_format_tag< FormatTag > > >::type* /* ptr */ = 0 ) { typedef typename get_reader< Device , FormatTag , detail::read_and_convert< ColorConverter > >::type reader_t; reader_t reader = make_reader( device , tag , detail::read_and_convert< ColorConverter >( cc ) ); read_and_convert_view( reader , view ); } /// \brief Reads and color-converts an image view. No memory is allocated. /// \param file_name File name. Must satisfy is_supported_path_spec metafunction. /// \param view The image view in which the data is read into. /// \param settings Specifies read settings depending on the image format. /// \throw std::ios_base::failure template < typename String , typename View , typename FormatTag > inline void read_and_convert_view( const String& file_name , const View& view , const image_read_settings< FormatTag >& settings , typename enable_if< mpl::and_< is_format_tag< FormatTag > , detail::is_supported_path_spec< String > > >::type* /* ptr */ = 0 ) { typedef typename get_reader< String , FormatTag , detail::read_and_convert< default_color_converter > >::type reader_t; reader_t reader = make_reader( file_name , settings , detail::read_and_convert< default_color_converter >() ); read_and_convert_view( reader , view ); } /// \brief Reads and color-converts an image view. No memory is allocated. /// \param file It's a device. Must satisfy is_input_device metafunction or is_adaptable_input_device. /// \param view The image view in which the data is read into. /// \param settings Specifies read settings depending on the image format. /// \throw std::ios_base::failure template < typename Device , typename View , typename FormatTag > inline void read_and_convert_view( Device& device , const View& view , const image_read_settings< FormatTag >& settings , typename enable_if< mpl::and_< detail::is_read_device< FormatTag , Device > , is_format_tag< FormatTag > > >::type* /* ptr */ = 0 ) { typedef typename get_reader< Device , FormatTag , detail::read_and_convert< default_color_converter > >::type reader_t; reader_t reader = make_reader( device , settings , detail::read_and_convert< default_color_converter >() ); read_and_convert_view( reader , view ); } /// \brief Reads and color-converts an image view. No memory is allocated. /// \param file_name File name. Must satisfy is_supported_path_spec metafunction. /// \param view The image view in which the data is read into. /// \param tag Defines the image format. Must satisfy is_format_tag metafunction. /// \throw std::ios_base::failure template < typename String , typename View , typename FormatTag > inline void read_and_convert_view( const String& file_name , const View& view , const FormatTag& tag , typename enable_if< mpl::and_< is_format_tag< FormatTag > , detail::is_supported_path_spec< String > > >::type* /* ptr */ = 0 ) { typedef typename get_reader< String , FormatTag , detail::read_and_convert< default_color_converter > >::type reader_t; reader_t reader = make_reader( file_name , tag , detail::read_and_convert< default_color_converter >() ); read_and_convert_view( reader , view ); } /// \brief Reads and color-converts an image view. No memory is allocated. /// \param file It's a device. Must satisfy is_input_device metafunction or is_adaptable_input_device. /// \param view The image view in which the data is read into. /// \param tag Defines the image format. Must satisfy is_format_tag metafunction. /// \throw std::ios_base::failure template < typename Device , typename View , typename FormatTag > inline void read_and_convert_view( Device& device , const View& view , const FormatTag& tag , typename enable_if< mpl::and_< detail::is_read_device< FormatTag , Device > , is_format_tag< FormatTag > > >::type* /* ptr */ = 0 ) { typedef typename get_reader< Device , FormatTag , detail::read_and_convert< default_color_converter > >::type reader_t; reader_t reader = make_reader( device , tag , detail::read_and_convert< default_color_converter >() ); read_and_convert_view( reader , view ); } } // namespace gil } // namespace boost #endif