//
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// Copyright 2007-2012 Christian Henning, Andreas Pokorny, Lubomir Bourdev
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//
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// Distributed under the Boost Software License, Version 1.0
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// 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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#ifndef BOOST_GIL_IO_READ_AND_CONVERT_VIEW_HPP
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#define BOOST_GIL_IO_READ_AND_CONVERT_VIEW_HPP
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#include <boost/gil/io/base.hpp>
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#include <boost/gil/io/conversion_policies.hpp>
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#include <boost/gil/io/device.hpp>
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#include <boost/gil/io/get_reader.hpp>
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#include <boost/gil/io/path_spec.hpp>
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#include <boost/gil/detail/mp11.hpp>
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#include <type_traits>
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namespace boost{ namespace gil {
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/// \ingroup IO
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/// \brief Reads and color-converts an image view. No memory is allocated.
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/// \param reader An image reader.
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/// \param img The image 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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/// \param cc Color converter function object.
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/// \throw std::ios_base::failure
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template <typename Reader, typename View>
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inline
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void read_and_convert_view(Reader& reader, View const& view,
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typename std::enable_if
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<
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mp11::mp_and
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<
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detail::is_reader<Reader>,
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is_format_tag<typename Reader::format_tag_t>
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>::value
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>::type* /*dummy*/ = nullptr)
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{
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reader.check_image_size(view.dimensions());
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reader.init_view(view, reader._settings);
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reader.apply(view);
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}
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/// \brief Reads and color-converts an image view. 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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/// \param cc Color converter function object.
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/// \throw std::ios_base::failure
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template <typename Device, typename View, typename ColorConverter, typename FormatTag>
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inline
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void read_and_convert_view(
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Device& device,
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View const& view,
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image_read_settings<FormatTag> const& settings,
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ColorConverter const& cc,
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typename std::enable_if
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<
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mp11::mp_and
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<
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detail::is_read_device<FormatTag, Device>,
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is_format_tag<FormatTag>
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>::value
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>::type* /*dummy*/ = nullptr)
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{
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using read_and_convert_t = detail::read_and_convert<ColorConverter>;
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using reader_t = typename get_reader<Device, FormatTag, read_and_convert_t>::type;
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reader_t reader = make_reader(device, settings, read_and_convert_t{cc});
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read_and_convert_view(reader, view);
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}
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/// \brief Reads and color-converts an image view. 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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/// \param cc Color converter function object.
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/// \throw std::ios_base::failure
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template <typename String, typename View, typename ColorConverter, typename FormatTag>
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inline
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void read_and_convert_view(
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String const& file_name,
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View const& view,
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image_read_settings<FormatTag> const& settings,
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ColorConverter const& cc,
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typename std::enable_if
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<
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mp11::mp_and
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<
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is_format_tag<FormatTag>,
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detail::is_supported_path_spec<String>
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>::value
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>::type* /*dummy*/ = nullptr)
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{
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using read_and_convert_t = detail::read_and_convert<ColorConverter>;
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using reader_t = typename get_reader<String, FormatTag, read_and_convert_t>::type;
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reader_t reader = make_reader(file_name, settings, read_and_convert_t{cc});
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read_and_convert_view(reader, view);
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}
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/// \brief Reads and color-converts an image view. 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 cc Color converter function object.
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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, typename View, typename ColorConverter, typename FormatTag>
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inline
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void read_and_convert_view(
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String const& file_name,
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View const& view,
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ColorConverter const& cc,
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FormatTag const& tag,
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typename std::enable_if
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<
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mp11::mp_and
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<
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is_format_tag<FormatTag>,
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detail::is_supported_path_spec<String>
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>::value
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>::type* /*dummy*/ = nullptr)
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{
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using read_and_convert_t = detail::read_and_convert<ColorConverter>;
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using reader_t = typename get_reader<String, FormatTag, read_and_convert_t>::type;
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reader_t reader = make_reader(file_name, tag, read_and_convert_t{cc});
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read_and_convert_view(reader, view);
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}
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/// \brief Reads and color-converts an image view. 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 cc Color converter function object.
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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, typename View, typename ColorConverter, typename FormatTag>
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inline
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void read_and_convert_view(
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Device& device,
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View const& view,
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ColorConverter const& cc,
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FormatTag const& tag,
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typename std::enable_if
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<
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mp11::mp_and
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<
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detail::is_read_device<FormatTag, Device>,
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is_format_tag<FormatTag>
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>::value
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>::type* /*dummy*/ = nullptr)
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{
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using read_and_convert_t = detail::read_and_convert<ColorConverter>;
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using reader_t = typename get_reader<Device, FormatTag, read_and_convert_t>::type;
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reader_t reader = make_reader(device, tag, read_and_convert_t{cc});
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read_and_convert_view(reader, view);
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}
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/// \brief Reads and color-converts an image view. 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, typename View, typename FormatTag>
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inline
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void read_and_convert_view(
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String const& file_name,
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View const& view,
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image_read_settings<FormatTag> const& settings,
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typename std::enable_if
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<
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mp11::mp_and
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<
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is_format_tag<FormatTag>,
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detail::is_supported_path_spec<String>
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>::value
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>::type* /*dummy*/ = nullptr)
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{
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using read_and_convert_t = detail::read_and_convert<default_color_converter>;
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using reader_t = typename get_reader<String, FormatTag, read_and_convert_t>::type;
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reader_t reader = make_reader(file_name, settings, read_and_convert_t{});
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read_and_convert_view(reader, view);
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}
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/// \brief Reads and color-converts an image view. 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 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, typename View, typename FormatTag>
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inline
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void read_and_convert_view(
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Device& device,
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View const& view,
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image_read_settings<FormatTag> const& settings,
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typename std::enable_if
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<
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mp11::mp_and
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<
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detail::is_read_device<FormatTag, Device>,
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is_format_tag<FormatTag>
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>::value
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>::type* /*dummy*/ = nullptr)
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{
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using read_and_convert_t = detail::read_and_convert<default_color_converter>;
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using reader_t = typename get_reader<Device, FormatTag, read_and_convert_t>::type;
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reader_t reader = make_reader(device, settings, read_and_convert_t{});
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read_and_convert_view(reader, view);
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}
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/// \brief Reads and color-converts an image view. 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, typename View, typename FormatTag>
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inline
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void read_and_convert_view(
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String const& file_name,
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View const& view,
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FormatTag const& tag,
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typename std::enable_if
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<
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mp11::mp_and
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<
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is_format_tag<FormatTag>,
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detail::is_supported_path_spec<String>
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>::value
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>::type* /*dummy*/ = nullptr)
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{
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using read_and_convert_t = detail::read_and_convert<default_color_converter>;
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using reader_t = typename get_reader<String, FormatTag, read_and_convert_t>::type;
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reader_t reader = make_reader(file_name, tag, read_and_convert_t{});
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read_and_convert_view(reader, view);
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}
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/// \brief Reads and color-converts an image view. 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, typename View, typename FormatTag>
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inline
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void read_and_convert_view(
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Device& device,
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View const& view,
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FormatTag const& tag,
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typename std::enable_if
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<
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mp11::mp_and
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<
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detail::is_read_device<FormatTag, Device>,
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is_format_tag<FormatTag>
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>::value
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>::type* /*dummy*/ = nullptr)
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{
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using read_and_convert_t = detail::read_and_convert<default_color_converter>;
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using reader_t = typename get_reader<Device, FormatTag, read_and_convert_t>::type;
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reader_t reader = make_reader(device, tag, read_and_convert_t{});
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read_and_convert_view(reader, view);
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}
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}} // namespace boost::gill
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#endif
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