2 // Copyright 2005-2007 Adobe Systems Incorporated
3 // Copyright 2018 Mateusz Loskot <mateusz at loskot dot net>
5 // Distributed under the Boost Software License, Version 1.0
6 // See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt
9 #include <boost/gil/channel_algorithm.hpp>
12 #define BOOST_TEST_MODULE test_algorithm_channel_convert
13 #include "unit_test.hpp"
14 #include "test_fixture.hpp"
16 namespace gil
= boost::gil
;
17 namespace fixture
= boost::gil::test::fixture
;
19 template <typename ChannelFixtureBase
>
20 struct test_convert_to
22 using channel_t
= typename
fixture::channel
<ChannelFixtureBase
>::channel_t
;
23 using channel_value_t
= typename
fixture::channel
<ChannelFixtureBase
>::channel_value_t
;
25 template <typename Channel
>
26 static void from(Channel src_min_v
, Channel src_max_v
)
28 channel_value_t min_v
= gil::channel_convert
<channel_t
>(src_min_v
);
29 channel_value_t max_v
= gil::channel_convert
<channel_t
>(src_max_v
);
30 fixture::channel_minmax_value
<channel_value_t
> expect
;
31 BOOST_TEST(min_v
== expect
.min_v_
);
32 BOOST_TEST(max_v
== expect
.max_v_
);
36 //--- Test gil::channel_convert from integral channels to all byte channels -------------
37 #define GIL_TEST_CHANNEL_CONVERT_FROM(source_channel_type) \
38 BOOST_FIXTURE_TEST_SUITE( \
39 channel_convert_from_##source_channel_type, \
40 fixture::channel_minmax_value<std::source_channel_type>) \
41 BOOST_AUTO_TEST_CASE_TEMPLATE(channel_value, Channel, fixture::channel_byte_types) \
42 { test_convert_to<fixture::channel_value<Channel>>::from(min_v_, max_v_); } \
43 BOOST_AUTO_TEST_CASE_TEMPLATE(channel_reference, Channel, fixture::channel_byte_types) \
44 { test_convert_to<fixture::channel_reference<Channel&>>::from(min_v_, max_v_); } \
45 BOOST_AUTO_TEST_CASE_TEMPLATE(channel_reference_const, Channel, fixture::channel_byte_types) \
46 { test_convert_to<fixture::channel_reference<Channel const&>>::from(min_v_, max_v_); } \
47 BOOST_AUTO_TEST_CASE(packed_channel_reference) \
49 using channels565_t = fixture::packed_channels565<std::uint16_t>; \
50 test_convert_to<typename channels565_t::fixture_0_5_t>::from(min_v_, max_v_); \
51 test_convert_to<typename channels565_t::fixture_5_6_t>::from(min_v_, max_v_); \
52 test_convert_to<typename channels565_t::fixture_11_5_t>::from(min_v_, max_v_); \
54 BOOST_AUTO_TEST_CASE(packed_dynamic_channel_reference) \
56 using channels565_t = fixture::packed_dynamic_channels565<std::uint16_t>; \
57 test_convert_to<typename channels565_t::fixture_5_t>::from(min_v_, max_v_); \
58 test_convert_to<typename channels565_t::fixture_6_t>::from(min_v_, max_v_); \
60 BOOST_AUTO_TEST_SUITE_END()
62 GIL_TEST_CHANNEL_CONVERT_FROM(uint8_t)
63 GIL_TEST_CHANNEL_CONVERT_FROM(int8_t)
64 GIL_TEST_CHANNEL_CONVERT_FROM(uint16_t)
65 GIL_TEST_CHANNEL_CONVERT_FROM(int16_t)
66 GIL_TEST_CHANNEL_CONVERT_FROM(uint32_t)
67 GIL_TEST_CHANNEL_CONVERT_FROM(int32_t)
69 #undef GIL_TEST_CHANNEL_CONVERT_FROM
71 // FIXME: gil::float32_t <-> gil::float64_t seems not supported
73 //--- Test gil::channel_convert from gil::float32_t to all integer channels -------------
74 BOOST_FIXTURE_TEST_SUITE(channel_convert_from_float32_t
,
75 fixture::channel_minmax_value
<gil::float32_t
>)
77 BOOST_AUTO_TEST_CASE_TEMPLATE(channel_value
, Channel
, fixture::channel_integer_types
)
79 test_convert_to
<fixture::channel_value
<Channel
>>::from(min_v_
, max_v_
);
82 BOOST_AUTO_TEST_CASE_TEMPLATE(channel_reference
, Channel
, fixture::channel_integer_types
)
84 test_convert_to
<fixture::channel_reference
<Channel
&>>::from(min_v_
, max_v_
);
87 BOOST_AUTO_TEST_CASE_TEMPLATE(
88 channel_reference_const
, Channel
, fixture::channel_integer_types
)
90 test_convert_to
<fixture::channel_reference
<Channel
const&>>::from(min_v_
, max_v_
);
93 BOOST_AUTO_TEST_SUITE_END()
95 //--- Test gil::channel_convert from gil::float64_t to all integer channels -------------
96 BOOST_FIXTURE_TEST_SUITE(channel_convert_from_float64_t
,
97 fixture::channel_minmax_value
<gil::float64_t
>)
99 BOOST_AUTO_TEST_CASE_TEMPLATE(channel_value
, Channel
, fixture::channel_integer_types
)
101 test_convert_to
<fixture::channel_value
<Channel
>>::from(min_v_
, max_v_
);
104 BOOST_AUTO_TEST_CASE_TEMPLATE(channel_reference
, Channel
, fixture::channel_integer_types
)
106 test_convert_to
<fixture::channel_reference
<Channel
&>>::from(min_v_
, max_v_
);
109 BOOST_AUTO_TEST_CASE_TEMPLATE(
110 channel_reference_const
, Channel
, fixture::channel_integer_types
)
112 test_convert_to
<fixture::channel_reference
<Channel
const&>>::from(min_v_
, max_v_
);
115 BOOST_AUTO_TEST_SUITE_END()