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dbd4e4549d
APNG encoding optimization #26849 related #26840 ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
91 lines
3.0 KiB
C++
91 lines
3.0 KiB
C++
// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html
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#include "perf_precomp.hpp"
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namespace opencv_test
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{
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#if defined(HAVE_PNG) || defined(HAVE_SPNG)
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using namespace perf;
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CV_ENUM(PNGStrategy, IMWRITE_PNG_STRATEGY_DEFAULT, IMWRITE_PNG_STRATEGY_FILTERED, IMWRITE_PNG_STRATEGY_HUFFMAN_ONLY, IMWRITE_PNG_STRATEGY_RLE, IMWRITE_PNG_STRATEGY_FIXED);
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CV_ENUM(PNGFilters, IMWRITE_PNG_FILTER_NONE, IMWRITE_PNG_FILTER_SUB, IMWRITE_PNG_FILTER_UP, IMWRITE_PNG_FILTER_AVG, IMWRITE_PNG_FILTER_PAETH, IMWRITE_PNG_FAST_FILTERS, IMWRITE_PNG_ALL_FILTERS);
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typedef perf::TestBaseWithParam<testing::tuple<PNGStrategy, PNGFilters, int>> PNG;
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PERF_TEST(PNG, decode)
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{
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String filename = getDataPath("perf/2560x1600.png");
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FILE *f = fopen(filename.c_str(), "rb");
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fseek(f, 0, SEEK_END);
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long len = ftell(f);
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fseek(f, 0, SEEK_SET);
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vector<uchar> file_buf((size_t)len);
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EXPECT_EQ(len, (long)fread(&file_buf[0], 1, (size_t)len, f));
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fclose(f); f = NULL;
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TEST_CYCLE() imdecode(file_buf, IMREAD_UNCHANGED);
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SANITY_CHECK_NOTHING();
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}
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PERF_TEST(PNG, decode_rgb)
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{
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String filename = getDataPath("perf/2560x1600.png");
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FILE *f = fopen(filename.c_str(), "rb");
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fseek(f, 0, SEEK_END);
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long len = ftell(f);
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fseek(f, 0, SEEK_SET);
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vector<uchar> file_buf((size_t)len);
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EXPECT_EQ(len, (long)fread(&file_buf[0], 1, (size_t)len, f));
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fclose(f); f = NULL;
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TEST_CYCLE() imdecode(file_buf, IMREAD_COLOR_RGB);
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SANITY_CHECK_NOTHING();
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}
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PERF_TEST(PNG, encode)
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{
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String filename = getDataPath("perf/2560x1600.png");
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cv::Mat src = imread(filename);
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vector<uchar> buf;
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TEST_CYCLE() imencode(".png", src, buf);
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SANITY_CHECK_NOTHING();
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}
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PERF_TEST_P(PNG, params,
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testing::Combine(
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testing::Values(IMWRITE_PNG_STRATEGY_DEFAULT, IMWRITE_PNG_STRATEGY_FILTERED, IMWRITE_PNG_STRATEGY_HUFFMAN_ONLY, IMWRITE_PNG_STRATEGY_RLE, IMWRITE_PNG_STRATEGY_FIXED),
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testing::Values(IMWRITE_PNG_FILTER_NONE, IMWRITE_PNG_FILTER_SUB, IMWRITE_PNG_FILTER_UP, IMWRITE_PNG_FILTER_AVG, IMWRITE_PNG_FILTER_PAETH, IMWRITE_PNG_FAST_FILTERS, IMWRITE_PNG_ALL_FILTERS),
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testing::Values(1, 6)))
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{
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String filename = getDataPath("perf/1920x1080.png");
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const int strategy = get<0>(GetParam());
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const int filter = get<1>(GetParam());
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const int level = get<2>(GetParam());
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Mat src = imread(filename);
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EXPECT_FALSE(src.empty()) << "Cannot open test image perf/1920x1080.png";
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vector<uchar> buf;
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TEST_CYCLE() imencode(".png", src, buf, { IMWRITE_PNG_COMPRESSION, level, IMWRITE_PNG_STRATEGY, strategy, IMWRITE_PNG_FILTER, filter });
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std::cout << " Encoded buffer size: " << buf.size()
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<< " bytes, Compression ratio: " << std::fixed << std::setprecision(2)
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<< (static_cast<double>(buf.size()) / (src.total() * src.channels())) * 100.0 << "%" << std::endl;
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SANITY_CHECK_NOTHING();
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}
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#endif // HAVE_PNG
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} // namespace
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