Generic Image Library: get_writer.hpp Source File

###  | #  |

get_writer.hpp
1//
2// Copyright 2012 Christian Henning
3//
4// Distributed under the Boost Software License, Version 1.0
5// See accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt
7//
8#ifndef BOOST_GIL_IO_GET_WRITER_HPP
9#define BOOST_GIL_IO_GET_WRITER_HPP
10
11#include <boost/gil/detail/mp11.hpp>
12#include <boost/gil/io/get_write_device.hpp>
13
14#include <type_traits>
15
16namespace boost { namespace gil {
17
19template <typename T, typename FormatTag, class Enable = void>
20 struct get_writer {};
21
22
23template <typename String, typename FormatTag>
24struct get_writer
25<
26 String,
27 FormatTag,
28 typename std::enable_if
29 <
30 mp11::mp_and
31 <
32 detail::is_supported_path_spec<String>,
33 is_format_tag<FormatTag>
34 >::value
35 >::type
36>
37{
38 using device_t = typename get_write_device<String, FormatTag>::type;
39 using type = writer<device_t, FormatTag>;
40};
41
42template <typename Device, typename FormatTag>
43struct get_writer
44<
45 Device,
46 FormatTag,
47 typename std::enable_if
48 <
49 mp11::mp_and
50 <
51 detail::is_adaptable_output_device<FormatTag, Device>,
52 is_format_tag<FormatTag>
53 >::value
54 >::type
55>
56{
57 using device_t = typename get_write_device<Device, FormatTag>::type;
58 using type = writer<device_t, FormatTag>;
59};
60
62template <typename T, typename FormatTag, class Enable = void>
63 struct get_dynamic_image_writer {};
64
65template <typename String, typename FormatTag>
66struct get_dynamic_image_writer
67<
68 String,
69 FormatTag,
70 typename std::enable_if
71 <
72 mp11::mp_and
73 <
74 detail::is_supported_path_spec<String>,
75 is_format_tag<FormatTag>
76 >::value
77 >::type
78>
79{
80 using device_t = typename get_write_device<String, FormatTag>::type;
81 using type = dynamic_image_writer<device_t, FormatTag>;
82};
83
84template <typename Device, typename FormatTag>
85struct get_dynamic_image_writer
86<
87 Device,
88 FormatTag,
89 typename std::enable_if
90 <
91 mp11::mp_and
92 <
93 detail::is_write_device<FormatTag, Device>,
94 is_format_tag<FormatTag>
95 >::value
96 >::type
97>
98{
99 using device_t = typename get_write_device<Device, FormatTag>::type;
100 using type = dynamic_image_writer<device_t, FormatTag>;
101};
102
103}} // namespace boost::gil
104
105#endif
boost
defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)
Definition algorithm.hpp:36
boost::gil::type
boost::gil::get_dynamic_image_writer
Helper metafunction to generate dynamic image writer type.
Definition get_writer.hpp:63
boost::gil::get_writer
Helper metafunction to generate writer type.
Definition get_writer.hpp:20