diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/colour_conversion_test.cc | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/test/colour_conversion_test.cc b/test/colour_conversion_test.cc index c48a0b63a..933588f49 100644 --- a/test/colour_conversion_test.cc +++ b/test/colour_conversion_test.cc @@ -25,9 +25,17 @@ */ +#include "lib/butler.h" #include "lib/colour_conversion.h" +#include "lib/content_factory.h" +#include "lib/dcp_video.h" #include "lib/film.h" +#include "lib/player.h" +#include "lib/video_content.h" +#include "test.h" #include <dcp/gamma_transfer_function.h> +#include <dcp/openjpeg_image.h> +#include <dcp/j2k_transcode.h> #include <libxml++/libxml++.h> #include <boost/test/unit_test.hpp> #include <iostream> @@ -36,6 +44,7 @@ using std::cout; using std::make_shared; using std::shared_ptr; +using std::vector; BOOST_AUTO_TEST_CASE (colour_conversion_test1) @@ -121,3 +130,49 @@ BOOST_AUTO_TEST_CASE (colour_conversion_test4) BOOST_CHECK (ColourConversion::from_xml(in, Film::current_state_version).get() == i.conversion); } } + + +BOOST_AUTO_TEST_CASE(noisy_blacks_test) +{ + auto content = content_factory(TestPaths::private_data() / "island.mov").front(); + auto film = new_test_film2("noisy_black_test", { content }); + + Player player(film, Image::Alignment::COMPACT); + player.set_fast(); + player.set_always_burn_open_subtitles(); + player.set_play_referenced(); + + auto butler = make_shared<Butler>( + film, player, AudioMapping(), 2, boost::bind(PlayerVideo::force, AV_PIX_FMT_RGB24), VideoRange::FULL, Image::Alignment::PADDED, true, false, Butler::Audio::DISABLED + ); + + auto video = butler->get_video(Butler::Behaviour::BLOCKING).first; + + vector<int> bitrates = { 50, 100, 150, 200, 250 }; + + for (auto bitrate: bitrates) { + auto before_encode = DCPVideo::convert_to_xyz(video, [](dcp::NoteType, std::string) {}); + write_openjpeg_image(before_encode, String::compose("build/test/noisy_black_test_%1_before.opj", bitrate)); + auto encoded = DCPVideo(video, 0, 24, bitrate * 1000000LL, Resolution::FOUR_K).encode_locally(); + auto after_decode = dcp::decompress_j2k(encoded, 0); + write_openjpeg_image(after_decode, String::compose("build/test/noisy_black_test_%1_after.opj", bitrate)); + + int max_diffs[] = { 0, 0, 0 }; + + int const width = video->out_size().width; + int const height = video->out_size().height; + + for (int y = 0; y < height; ++y) { + for (int x = 0; x < width; ++x) { + int offset = y * width + x; + for (int c = 0; c < 3; ++c) { + auto const diff = std::abs(before_encode->data(c)[offset] - after_decode->data(c)[offset]); + max_diffs[c] = std::max(max_diffs[c], diff); + } + } + } + + std::cout << bitrate << "MBps diffs; " << max_diffs[0] << " " << max_diffs[1] << " " << max_diffs[2] << "\n"; + } +} + |