122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
|
//
|
||
|
|
//
|
||
|
|
// Copyright 2012 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_IO_MAKE_BACKEND_HPP
|
||
|
|
#define BOOST_GIL_IO_MAKE_BACKEND_HPP
|
||
|
|
|
||
|
|
#include <boost/gil/detail/mp11.hpp>
|
||
|
|
#include <boost/gil/io/get_reader.hpp>
|
||
|
|
|
||
|
|
#include <type_traits>
|
||
|
|
|
||
|
|
namespace boost { namespace gil {
|
||
|
|
|
||
|
|
template <typename String, typename FormatTag>
|
||
|
|
inline
|
||
|
|
auto make_reader_backend(
|
||
|
|
String const& file_name, image_read_settings<FormatTag> const& settings,
|
||
|
|
typename std::enable_if
|
||
|
|
<
|
||
|
|
mp11::mp_and
|
||
|
|
<
|
||
|
|
detail::is_supported_path_spec<String>,
|
||
|
|
is_format_tag<FormatTag>
|
||
|
|
>::value
|
||
|
|
>::type* /*dummy*/ = nullptr)
|
||
|
|
-> typename get_reader_backend<String, FormatTag>::type
|
||
|
|
{
|
||
|
|
using device_t = typename get_read_device<String, FormatTag>::type;
|
||
|
|
|
||
|
|
device_t device(
|
||
|
|
detail::convert_to_native_string(file_name),
|
||
|
|
typename detail::file_stream_device<FormatTag>::read_tag());
|
||
|
|
|
||
|
|
return reader_backend<device_t, FormatTag>(device, settings);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename FormatTag>
|
||
|
|
inline
|
||
|
|
auto make_reader_backend(
|
||
|
|
std::wstring const& file_name, image_read_settings<FormatTag> const& settings)
|
||
|
|
-> typename get_reader_backend<std::wstring, FormatTag>::type
|
||
|
|
{
|
||
|
|
char const* str = detail::convert_to_native_string(file_name);
|
||
|
|
|
||
|
|
using device_t = typename get_read_device<std::wstring, FormatTag>::type;
|
||
|
|
device_t device(str, typename detail::file_stream_device<FormatTag>::read_tag());
|
||
|
|
|
||
|
|
delete[] str; // TODO: RAII
|
||
|
|
|
||
|
|
return reader_backend<device_t, FormatTag>(device, settings);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename FormatTag>
|
||
|
|
inline
|
||
|
|
auto make_reader_backend(
|
||
|
|
detail::filesystem::path const& path,
|
||
|
|
image_read_settings<FormatTag> const& settings)
|
||
|
|
-> typename get_reader_backend<std::wstring, FormatTag>::type
|
||
|
|
{
|
||
|
|
return make_reader_backend(path.wstring(), settings);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename Device, typename FormatTag>
|
||
|
|
inline
|
||
|
|
auto make_reader_backend(Device& io_dev, image_read_settings<FormatTag> const& settings,
|
||
|
|
typename std::enable_if
|
||
|
|
<
|
||
|
|
mp11::mp_and
|
||
|
|
<
|
||
|
|
detail::is_adaptable_input_device<FormatTag, Device>,
|
||
|
|
is_format_tag<FormatTag>
|
||
|
|
>::value
|
||
|
|
>::type* /*dummy*/ = nullptr)
|
||
|
|
-> typename get_reader_backend<Device, FormatTag>::type
|
||
|
|
{
|
||
|
|
using device_t = typename get_read_device<Device, FormatTag>::type;
|
||
|
|
device_t device(io_dev);
|
||
|
|
|
||
|
|
return reader_backend<device_t, FormatTag>(device, settings);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename String, typename FormatTag>
|
||
|
|
inline
|
||
|
|
auto make_reader_backend(String const& file_name, FormatTag const&,
|
||
|
|
typename std::enable_if
|
||
|
|
<
|
||
|
|
mp11::mp_and
|
||
|
|
<
|
||
|
|
detail::is_supported_path_spec<String>,
|
||
|
|
is_format_tag<FormatTag>
|
||
|
|
>::value
|
||
|
|
>::type* /*dummy*/ = nullptr)
|
||
|
|
-> typename get_reader_backend<String, FormatTag>::type
|
||
|
|
{
|
||
|
|
return make_reader_backend(file_name, image_read_settings<FormatTag>());
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename Device, typename FormatTag>
|
||
|
|
inline
|
||
|
|
auto make_reader_backend(Device& io_dev, FormatTag const&,
|
||
|
|
typename std::enable_if
|
||
|
|
<
|
||
|
|
mp11::mp_and
|
||
|
|
<
|
||
|
|
detail::is_adaptable_input_device<FormatTag, Device>,
|
||
|
|
is_format_tag<FormatTag>
|
||
|
|
>::value
|
||
|
|
>::type* /*dummy*/ = nullptr)
|
||
|
|
-> typename get_reader_backend<Device, FormatTag>::type
|
||
|
|
{
|
||
|
|
return make_reader_backend(io_dev, image_read_settings<FormatTag>());
|
||
|
|
}
|
||
|
|
|
||
|
|
}} // namespace boost::gil
|
||
|
|
|
||
|
|
#endif
|