diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /vcl/qa/cppunit/jpeg/JpegWriterTest.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vcl/qa/cppunit/jpeg/JpegWriterTest.cxx')
-rw-r--r-- | vcl/qa/cppunit/jpeg/JpegWriterTest.cxx | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/vcl/qa/cppunit/jpeg/JpegWriterTest.cxx b/vcl/qa/cppunit/jpeg/JpegWriterTest.cxx new file mode 100644 index 000000000..f9b58c308 --- /dev/null +++ b/vcl/qa/cppunit/jpeg/JpegWriterTest.cxx @@ -0,0 +1,117 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + */ + +#include <sal/config.h> + +#include <string_view> + +#include <unotest/bootstrapfixturebase.hxx> +#include <vcl/graphicfilter.hxx> +#include <vcl/BitmapReadAccess.hxx> +#include <tools/stream.hxx> +#include <graphic/GraphicFormatDetector.hxx> + +constexpr OUStringLiteral gaDataUrl(u"/vcl/qa/cppunit/jpeg/data/"); + +class JpegWriterTest : public test::BootstrapFixtureBase +{ + OUString getFullUrl(std::u16string_view sFileName) + { + return m_directories.getURLFromSrc(gaDataUrl) + sFileName; + } + + BitmapEx load(const OUString& aURL); + BitmapEx roundtripJPG(const BitmapEx& bitmap); + BitmapEx roundtripJPG(const OUString& aURL); + +public: + void testWrite8BitGrayscale(); + void testWrite8BitNonGrayscale(); + + CPPUNIT_TEST_SUITE(JpegWriterTest); + CPPUNIT_TEST(testWrite8BitGrayscale); + CPPUNIT_TEST(testWrite8BitNonGrayscale); + CPPUNIT_TEST_SUITE_END(); +}; + +BitmapEx JpegWriterTest::load(const OUString& aURL) +{ + GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter(); + Graphic aGraphic; + SvFileStream aFileStream(aURL, StreamMode::READ); + ErrCode bResult = rFilter.ImportGraphic(aGraphic, aURL, aFileStream); + CPPUNIT_ASSERT_EQUAL(ERRCODE_NONE, bResult); + return aGraphic.GetBitmapEx(); +} + +BitmapEx JpegWriterTest::roundtripJPG(const OUString& aURL) { return roundtripJPG(load(aURL)); } + +BitmapEx JpegWriterTest::roundtripJPG(const BitmapEx& bitmap) +{ + // EXPORT JPEG + SvMemoryStream aStream; + GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter(); + sal_uInt16 exportFormatJPG = rFilter.GetExportFormatNumberForShortName(JPG_SHORTNAME); + Graphic aExportGraphic(bitmap); + ErrCode bResult = rFilter.ExportGraphic(aExportGraphic, u"memory", aStream, exportFormatJPG); + CPPUNIT_ASSERT_EQUAL(ERRCODE_NONE, bResult); + //Detect the magic bytes - we need to be sure the file is actually a JPEG + aStream.Seek(0); + vcl::GraphicFormatDetector aDetector(aStream, ""); + CPPUNIT_ASSERT(aDetector.detect()); + CPPUNIT_ASSERT(aDetector.checkJPG()); + // IMPORT JPEG + aStream.Seek(0); + Graphic aImportGraphic; + sal_uInt16 importFormatJPG = rFilter.GetImportFormatNumberForShortName(JPG_SHORTNAME); + bResult = rFilter.ImportGraphic(aImportGraphic, u"memory", aStream, importFormatJPG); + CPPUNIT_ASSERT_EQUAL(ERRCODE_NONE, bResult); + return aImportGraphic.GetBitmapEx(); +} + +void JpegWriterTest::testWrite8BitGrayscale() +{ + Bitmap bitmap = roundtripJPG(getFullUrl(u"8BitGrayscale.jpg")).GetBitmap(); + Bitmap::ScopedReadAccess access(bitmap); + const ScanlineFormat format = access->GetScanlineFormat(); + // Check that it's still 8bit grayscale. + CPPUNIT_ASSERT_EQUAL(ScanlineFormat::N8BitPal, format); + CPPUNIT_ASSERT(bitmap.HasGreyPalette8Bit()); + // Check that the content is valid. + CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_WHITE), access->GetColor(0, 0)); + CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_WHITE), access->GetColor(0, access->Width() - 1)); + CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_WHITE), access->GetColor(access->Height() - 1, 0)); + CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_BLACK), + access->GetColor(access->Height() - 1, access->Width() - 1)); +} + +void JpegWriterTest::testWrite8BitNonGrayscale() +{ + Bitmap bitmap = roundtripJPG(getFullUrl(u"8BitNonGrayscale.gif")).GetBitmap(); + Bitmap::ScopedReadAccess access(bitmap); + const ScanlineFormat format = access->GetScanlineFormat(); + // Check that it's still 8bit grayscale. + CPPUNIT_ASSERT_EQUAL(ScanlineFormat::N8BitPal, format); + // The original image has grayscale palette, just with entries in a different order. + // Do not check for grayscale 8bit, the roundtrip apparently fixes that. What's important + // is the content. + CPPUNIT_ASSERT(bitmap.HasGreyPaletteAny()); + // CPPUNIT_ASSERT(bitmap.HasGreyPalette8Bit()); + // Check that the content is valid. + CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_WHITE), access->GetColor(0, 0)); + CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_WHITE), access->GetColor(0, access->Width() - 1)); + CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_WHITE), access->GetColor(access->Height() - 1, 0)); + CPPUNIT_ASSERT_EQUAL(BitmapColor(COL_BLACK), + access->GetColor(access->Height() - 1, access->Width() - 1)); +} + +CPPUNIT_TEST_SUITE_REGISTRATION(JpegWriterTest); + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |