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- //
- // 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
- //
- //#define BOOST_TEST_MODULE jpeg_read_test_module
- #include <boost/gil.hpp>
- #include <boost/gil/extension/io/jpeg.hpp>
- #include <boost/test/unit_test.hpp>
- #include "paths.hpp"
- #include "scanline_read_test.hpp"
- using namespace std;
- using namespace boost::gil;
- using tag_t = jpeg_tag;
- BOOST_AUTO_TEST_SUITE( gil_io_jpeg_tests )
- #ifdef BOOST_GIL_IO_TEST_ALLOW_READING_IMAGES
- BOOST_AUTO_TEST_CASE( read_header_test )
- {
- {
- using backend_t = get_reader_backend<std::string const, tag_t>::type;
- backend_t backend = read_image_info( jpeg_filename
- , tag_t()
- );
- BOOST_CHECK_EQUAL( backend._info._width , 1000u );
- BOOST_CHECK_EQUAL( backend._info._height , 600u );
- BOOST_CHECK_EQUAL( backend._info._num_components, 3 );
- BOOST_CHECK_EQUAL( backend._info._color_space , JCS_YCbCr );
- BOOST_CHECK_EQUAL( backend._info._data_precision, 8 );
- }
- }
- BOOST_AUTO_TEST_CASE( read_pixel_density_test )
- {
- using backend_t = get_reader_backend<std::string const, tag_t>::type;
- backend_t backend = read_image_info( jpeg_in + "EddDawson/36dpi.jpg"
- , tag_t()
- );
- rgb8_image_t img;
- read_image( jpeg_in + "EddDawson/36dpi.jpg", img, jpeg_tag() );
- image_write_info< 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
- );
- stringstream in_memory( ios_base::in | ios_base::out | ios_base::binary );
- write_view( in_memory, view( img ), write_settings );
- using backend2_t = get_reader_backend<stringstream, tag_t>::type;
- backend2_t backend2 = read_image_info( in_memory
- , tag_t()
- );
- // 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_CHECK_EQUAL( 0, 1 );
- }
- }
- BOOST_AUTO_TEST_CASE( read_reference_images_test )
- {
- using image_t = rgb8_image_t;
- image_t img;
- read_image( jpeg_filename
- , img
- , tag_t()
- );
- #ifdef BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
- write_view( jpeg_out + "rgb8_test.jpg"
- , view( img )
- , tag_t()
- );
- #endif // BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
- }
- BOOST_AUTO_TEST_CASE( dct_method_read_test )
- {
- using image_t = rgb8_image_t;
- image_t img;
- image_read_settings< jpeg_tag > settings;
- settings._dct_method = jpeg_dct_method::fast;
- read_image( jpeg_filename
- , img
- , settings
- );
- #ifdef BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
- write_view( jpeg_out + "fast_dct_read_test.jpg"
- , view( img )
- , tag_t()
- );
- #endif // BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES
- }
- BOOST_AUTO_TEST_CASE( read_reference_images_image_iterator_test )
- {
- test_scanline_reader< rgb8_image_t, jpeg_tag >( jpeg_filename.c_str() );
- }
- #endif // BOOST_GIL_IO_TEST_ALLOW_READING_IMAGES
- BOOST_AUTO_TEST_SUITE_END()
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