123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121 |
- //
- // Copyright 2019 Mateusz Loskot <mateusz at loskot dot net>
- //
- // 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
- //
- #include <boost/gil.hpp>
- #include <boost/assert.hpp>
- #include <cstdint>
- #include <initializer_list>
- #include <limits>
- #include <random>
- #include <tuple>
- #include <type_traits>
- namespace boost { namespace gil {
- namespace test { namespace fixture {
- using image_types = std::tuple
- <
- gil::gray8_image_t,
- gil::gray16_image_t,
- gil::gray32_image_t,
- gil::bgr8_image_t,
- gil::bgr16_image_t,
- gil::bgr32_image_t,
- gil::rgb8_image_t,
- gil::rgb16_image_t,
- gil::rgb32_image_t,
- gil::rgba8_image_t,
- gil::rgba16_image_t,
- gil::rgba32_image_t
- >;
- template <typename T>
- struct consecutive_value
- {
- consecutive_value(T start) : current_(start)
- {
- BOOST_TEST(static_cast<int>(current_) >= 0);
- }
- T operator()()
- {
- BOOST_ASSERT(static_cast<int>(current_) + 1 > 0);
- return current_++;
- }
- T current_;
- };
- template <typename T>
- struct reverse_consecutive_value
- {
- reverse_consecutive_value(T start) : current_(start)
- {
- BOOST_ASSERT(static_cast<int>(current_) > 0);
- }
- T operator()()
- {
- BOOST_ASSERT(static_cast<int>(current_) + 1 >= 0);
- return current_--;
- }
- T current_;
- };
- template <typename T>
- struct random_value
- {
- static_assert(std::is_integral<T>::value, "T must be integral type");
- static constexpr auto range_min = std::numeric_limits<T>::min();
- static constexpr auto range_max = std::numeric_limits<T>::max();
- random_value() : rng_(rd_()), uid_(range_min, range_max) {}
- T operator()()
- {
- auto value = uid_(rng_);
- BOOST_ASSERT(range_min <= value && value <= range_max);
- return static_cast<T>(value);
- }
- std::random_device rd_;
- std::mt19937 rng_;
- std::uniform_int_distribution<typename gil::promote_integral<T>::type> uid_;
- };
- template <typename Image, typename Generator>
- auto generate_image(std::ptrdiff_t size_x, std::ptrdiff_t size_y, Generator&& generate) -> Image
- {
- using pixel_t = typename Image::value_type;
- Image out(size_x, size_y);
- gil::for_each_pixel(view(out), [&generate](pixel_t& p) {
- gil::static_generate(p, [&generate]() { return generate(); });
- });
- return out;
- }
- template <typename Image>
- auto create_image(std::ptrdiff_t size_x, std::ptrdiff_t size_y, int channel_value) -> Image
- {
- using pixel_t = typename Image::value_type;
- using channel_t = typename gil::channel_type<pixel_t>::type;
- static_assert(std::is_integral<channel_t>::value, "channel must be integral type");
- Image out(size_x, size_y);
- gil::for_each_pixel(view(out), [&channel_value](pixel_t& p) {
- gil::static_fill(p, static_cast<channel_t>(channel_value));
- });
- return out;
- }
- }}}} // namespace boost::gil::test::fixture
|