WIP. Scale cover art option. Seems to work
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emeric
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/*
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Copyright 2007-2008 Christian Henning, Andreas Pokorny, Lubomir Bourdev
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Use, modification and distribution are subject to the Boost Software License,
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Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt).
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*/
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/*************************************************************************************************/
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#ifndef BOOST_GIL_EXTENSION_IO_READ_VIEW_HPP
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#define BOOST_GIL_EXTENSION_IO_READ_VIEW_HPP
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////////////////////////////////////////////////////////////////////////////////////////
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/// \file
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/// \brief
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/// \author Christian Henning, Andreas Pokorny, Lubomir Bourdev \n
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///
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/// \date 2007-2008 \n
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///
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////////////////////////////////////////////////////////////////////////////////////////
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#include <boost/type_traits/is_base_and_derived.hpp>
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#include <boost/mpl/and.hpp>
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#include <boost/utility/enable_if.hpp>
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#include "base.hpp"
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#include "io_device.hpp"
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#include "path_spec.hpp"
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namespace boost{ namespace gil {
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/// \ingroup IO
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/// \brief Reads an image view without conversion. No memory is allocated.
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/// \param file It's a device. Must satisfy is_input_device metafunction.
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/// \param view The image view in which the data is read into.
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/// \param settings Specifies read settings depending on the image format.
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/// \throw std::ios_base::failure
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template < typename Device
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, typename View
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, typename FormatTag
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>
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inline
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void read_view( Device& file
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, const View& view
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, const image_read_settings< FormatTag >& settings
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, typename enable_if< typename mpl::and_< typename detail::is_input_device< Device >::type
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, typename is_format_tag < FormatTag >::type
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, typename is_read_supported < typename get_pixel_type< View >::type
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, FormatTag
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>::type
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>::type
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>::type* /* ptr */ = 0
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)
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{
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detail::reader< Device
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, FormatTag
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, detail::read_and_no_convert
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> reader( file
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, settings
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);
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reader.init_view( view
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, reader.get_info()
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);
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reader.apply( view );
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}
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/// \brief Reads an image view without conversion. No memory is allocated.
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/// \param file It's a device. Must satisfy is_adaptable_input_device metafunction.
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/// \param view The image view in which the data is read into.
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/// \param settings Specifies read settings depending on the image format.
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/// \throw std::ios_base::failure
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template < typename Device
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, typename View
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, typename FormatTag
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>
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inline
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void read_view( Device& file
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, const View& view
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, const image_read_settings< FormatTag >& settings
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, typename enable_if< typename mpl::and_< typename detail::is_adaptable_input_device< FormatTag
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, Device
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>::type
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, typename is_format_tag<FormatTag>::type
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, typename is_read_supported< typename get_pixel_type< View >::type
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, FormatTag
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>::type
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>::type
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>::type* /* ptr */ = 0
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)
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{
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typedef typename detail::is_adaptable_input_device< FormatTag
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, Device
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>::device_type device_type;
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device_type dev( file );
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detail::reader< device_type
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, FormatTag
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, detail::read_and_no_convert
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> reader( dev
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, settings
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);
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reader.init_view( view
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, reader.get_info()
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);
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reader.apply( view );
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}
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/// \brief Reads an image view without conversion. No memory is allocated.
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/// \param file_name File name. Must satisfy is_supported_path_spec metafunction.
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/// \param view The image view in which the data is read into.
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/// \param settings Specifies read settings depending on the image format.
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/// \throw std::ios_base::failure
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template < typename String
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, typename View
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, typename FormatTag
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>
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inline
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void read_view( const String& file_name
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, const View& view
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, const image_read_settings< FormatTag >& settings
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, typename enable_if< typename mpl::and_< typename detail::is_supported_path_spec< String >::type
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, typename is_format_tag< FormatTag >::type
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, typename is_read_supported< typename get_pixel_type< View >::type
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, FormatTag
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>::type
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>::type
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>::type* /* ptr */ = 0
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)
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{
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detail::file_stream_device<FormatTag> device( detail::convert_to_string( file_name )
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, typename detail::file_stream_device< FormatTag >::read_tag()
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);
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read_view( device
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, view
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, settings
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);
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}
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/// \brief Reads an image view without conversion. No memory is allocated.
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/// \param file_name File name. Must satisfy is_supported_path_spec metafunction.
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/// \param view The image view in which the data is read into.
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/// \param tag Defines the image format. Must satisfy is_format_tag metafunction.
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/// \throw std::ios_base::failure
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template < typename String
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, typename View
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, typename FormatTag
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>
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inline
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void read_view( const String& file_name
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, const View& view
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, const FormatTag&
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, typename enable_if< typename mpl::and_< typename detail::is_supported_path_spec< String >::type
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, typename is_format_tag< FormatTag >::type
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, typename is_read_supported< typename get_pixel_type< View >::type
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, FormatTag
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>::type
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>::type
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>::type* /* ptr */ = 0
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)
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{
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read_view( file_name
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, view
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, image_read_settings< FormatTag >()
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);
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}
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/// \brief Reads an image view without conversion. No memory is allocated.
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/// \param file It's a device. Must satisfy is_input_device metafunction or is_adaptable_input_device.
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/// \param view The image view in which the data is read into.
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/// \param tag Defines the image format. Must satisfy is_format_tag metafunction.
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/// \throw std::ios_base::failure
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template< typename Device
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, typename View
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, typename FormatTag
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>
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inline
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void read_view( Device& device
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, const View& view
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, const FormatTag&
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, typename enable_if< typename mpl::and_< typename is_format_tag< FormatTag >::type
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, typename mpl::or_< typename detail::is_input_device< Device >::type
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, typename detail::is_adaptable_input_device< FormatTag
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, Device
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>::type
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>::type
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, typename is_read_supported< typename get_pixel_type< View >::type
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, FormatTag
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>::type
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>::type
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>::type* /* ptr */ = 0
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)
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{
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read_view( device
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, view
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, image_read_settings< FormatTag >()
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);
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}
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} // namespace gil
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} // namespace boost
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#endif // BOOST_GIL_EXTENSION_IO_READ_VIEW_HPP
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