107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
//
|
|
// Copyright 2013 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
|
|
//
|
|
#include <boost/gil.hpp>
|
|
#include <boost/gil/extension/io/jpeg.hpp>
|
|
|
|
#include <boost/core/lightweight_test.hpp>
|
|
|
|
#include "paths.hpp"
|
|
#include "scanline_read_test.hpp"
|
|
|
|
#include <cmath>
|
|
#include <sstream>
|
|
#include <string>
|
|
|
|
namespace gil = boost::gil;
|
|
|
|
#ifdef BOOST_GIL_IO_TEST_ALLOW_READING_IMAGES
|
|
|
|
void test_read_header()
|
|
{
|
|
using backend_t = gil::get_reader_backend<std::string const, gil::jpeg_tag>::type;
|
|
backend_t backend = gil::read_image_info(jpeg_filename, gil::jpeg_tag());
|
|
|
|
BOOST_TEST_EQ(backend._info._width, 1000u);
|
|
BOOST_TEST_EQ(backend._info._height, 600u);
|
|
|
|
BOOST_TEST_EQ(backend._info._num_components, 3);
|
|
BOOST_TEST_EQ(backend._info._color_space, JCS_YCbCr);
|
|
|
|
BOOST_TEST_EQ(backend._info._data_precision, 8);
|
|
}
|
|
|
|
void test_read_pixel_density()
|
|
{
|
|
using backend_t = gil::get_reader_backend<std::string const, gil::jpeg_tag>::type;
|
|
backend_t backend = gil::read_image_info(jpeg_in + "EddDawson/36dpi.jpg", gil::jpeg_tag());
|
|
|
|
gil::rgb8_image_t img;
|
|
gil::read_image(jpeg_in + "EddDawson/36dpi.jpg", img, gil::jpeg_tag());
|
|
|
|
gil::image_write_info<gil::jpeg_tag> write_settings;
|
|
write_settings.set_pixel_dimensions(backend._info._width, backend._info._height, backend._info._pixel_width_mm, backend._info._pixel_height_mm);
|
|
|
|
std::stringstream in_memory(std::ios_base::in | std::ios_base::out | std::ios_base::binary);
|
|
gil::write_view(in_memory, gil::view(img), write_settings);
|
|
|
|
using backend2_t = gil::get_reader_backend<std::stringstream, gil::jpeg_tag>::type;
|
|
backend2_t backend2 = gil::read_image_info(in_memory, gil::jpeg_tag());
|
|
|
|
// Because of rounding the two results differ slightly.
|
|
if (std::abs(backend._info._pixel_width_mm - backend2._info._pixel_width_mm) > 10.0 || std::abs(backend._info._pixel_height_mm - backend2._info._pixel_height_mm) > 10.0)
|
|
{
|
|
BOOST_TEST_EQ(0, 1);
|
|
}
|
|
}
|
|
|
|
void test_read_reference_images()
|
|
{
|
|
using image_t = gil::rgb8_image_t;
|
|
image_t img;
|
|
read_image(jpeg_filename, img, gil::jpeg_tag());
|
|
|
|
#ifdef BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
|
|
gil::write_view(jpeg_out + "rgb8_test.jpg", gil::view(img), gil::jpeg_tag());
|
|
#endif // BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
|
|
}
|
|
|
|
void test_dct_method_read()
|
|
{
|
|
using image_t = gil::rgb8_image_t;
|
|
image_t img;
|
|
|
|
gil::image_read_settings<gil::jpeg_tag> settings;
|
|
settings._dct_method = gil::jpeg_dct_method::fast;
|
|
|
|
gil::read_image(jpeg_filename, img, settings);
|
|
|
|
#ifdef BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
|
|
gil::write_view(jpeg_out + "fast_dct_read_test.jpg", gil::view(img), gil::jpeg_tag());
|
|
#endif // BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
|
|
}
|
|
|
|
void test_read_reference_images_image_iterator()
|
|
{
|
|
test_scanline_reader<gil::rgb8_image_t, gil::jpeg_tag>(jpeg_filename.c_str());
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test_read_header();
|
|
test_read_pixel_density();
|
|
test_read_reference_images();
|
|
test_dct_method_read();
|
|
test_read_reference_images_image_iterator();
|
|
|
|
return boost::report_errors();
|
|
}
|
|
|
|
#else
|
|
int main() {}
|
|
#endif // BOOST_GIL_IO_TEST_ALLOW_READING_IMAGES
|