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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /vcl/qa/cppunit/jpeg/JpegWriterTest.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.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.cxx117
1 files changed, 117 insertions, 0 deletions
diff --git a/vcl/qa/cppunit/jpeg/JpegWriterTest.cxx b/vcl/qa/cppunit/jpeg/JpegWriterTest.cxx
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+++ b/vcl/qa/cppunit/jpeg/JpegWriterTest.cxx
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+/* -*- 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: */