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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/BitmapWriteAccess.hxx>
#include <tools/stream.hxx>
constexpr OUStringLiteral gaDataUrl(u"/vcl/qa/cppunit/jpeg/data/");
class JpegReaderTest : public test::BootstrapFixtureBase
{
OUString getFullUrl(std::u16string_view sFileName)
{
return m_directories.getURLFromSrc(gaDataUrl) + sFileName;
}
Graphic loadJPG(const OUString& aURL);
public:
void testReadRGB();
void testReadGray();
void testReadCMYK();
void testTdf138950();
CPPUNIT_TEST_SUITE(JpegReaderTest);
CPPUNIT_TEST(testReadRGB);
CPPUNIT_TEST(testReadGray);
CPPUNIT_TEST(testReadCMYK);
CPPUNIT_TEST(testTdf138950);
CPPUNIT_TEST_SUITE_END();
};
static int deltaColor(BitmapColor aColor1, BitmapColor aColor2)
{
int deltaR = std::abs(aColor1.GetRed() - aColor2.GetRed());
int deltaG = std::abs(aColor1.GetGreen() - aColor2.GetGreen());
int deltaB = std::abs(aColor1.GetBlue() - aColor2.GetBlue());
return std::max(std::max(deltaR, deltaG), deltaB);
}
static bool checkRect(Bitmap& rBitmap, int aLayerNumber, tools::Long nAreaHeight,
tools::Long nAreaWidth, Color aExpectedColor, int nMaxDelta)
{
BitmapScopedWriteAccess pAccess(rBitmap);
tools::Long nWidth = std::min(nAreaWidth, pAccess->Width());
tools::Long nHeight = std::min(nAreaHeight, pAccess->Height());
tools::Long firstX = 0 + aLayerNumber;
tools::Long firstY = 0 + aLayerNumber;
tools::Long lastX = nWidth - 1 - aLayerNumber;
tools::Long lastY = nHeight - 1 - aLayerNumber;
int delta;
for (tools::Long y = firstY; y <= lastY; y++)
{
Color aColorFirst = pAccess->GetPixel(y, firstX);
delta = deltaColor(aColorFirst, aExpectedColor);
if (delta > nMaxDelta)
return false;
Color aColorLast = pAccess->GetPixel(y, lastX);
delta = deltaColor(aColorLast, aExpectedColor);
if (delta > nMaxDelta)
return false;
}
for (tools::Long x = firstX; x <= lastX; x++)
{
Color aColorFirst = pAccess->GetPixel(firstY, x);
delta = deltaColor(aColorFirst, aExpectedColor);
if (delta > nMaxDelta)
return false;
Color aColorLast = pAccess->GetPixel(lastY, x);
delta = deltaColor(aColorLast, aExpectedColor);
if (delta > nMaxDelta)
return false;
}
return true;
}
static int getNumberOfImageComponents(const Graphic& rGraphic)
{
GfxLink aLink = rGraphic.GetGfxLink();
SvMemoryStream aMemoryStream(const_cast<sal_uInt8*>(aLink.GetData()), aLink.GetDataSize(),
StreamMode::READ | StreamMode::WRITE);
GraphicDescriptor aDescriptor(aMemoryStream, nullptr);
CPPUNIT_ASSERT(aDescriptor.Detect(true));
return aDescriptor.GetNumberOfImageComponents();
}
Graphic JpegReaderTest::loadJPG(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;
}
void JpegReaderTest::testReadRGB()
{
Graphic aGraphic = loadJPG(getFullUrl(u"JPEGTestRGB.jpeg"));
Bitmap aBitmap = aGraphic.GetBitmapEx().GetBitmap();
Size aSize = aBitmap.GetSizePixel();
CPPUNIT_ASSERT_EQUAL(tools::Long(12), aSize.Width());
CPPUNIT_ASSERT_EQUAL(tools::Long(12), aSize.Height());
int nMaxDelta = 1; // still acceptable color error
CPPUNIT_ASSERT(checkRect(aBitmap, 0, 8, 8, Color(0xff, 0xff, 0xff), nMaxDelta));
CPPUNIT_ASSERT(checkRect(aBitmap, 1, 8, 8, Color(0xff, 0x00, 0x00), nMaxDelta));
CPPUNIT_ASSERT(checkRect(aBitmap, 2, 8, 8, Color(0x00, 0xff, 0x00), nMaxDelta));
CPPUNIT_ASSERT(checkRect(aBitmap, 3, 8, 8, Color(0x00, 0x00, 0xff), nMaxDelta));
CPPUNIT_ASSERT_EQUAL(3, getNumberOfImageComponents(aGraphic));
}
void JpegReaderTest::testReadGray()
{
Graphic aGraphic = loadJPG(getFullUrl(u"JPEGTestGray.jpeg"));
Bitmap aBitmap = aGraphic.GetBitmapEx().GetBitmap();
Size aSize = aBitmap.GetSizePixel();
CPPUNIT_ASSERT_EQUAL(tools::Long(12), aSize.Width());
CPPUNIT_ASSERT_EQUAL(tools::Long(12), aSize.Height());
aBitmap.Convert(
BmpConversion::N24Bit); // convert to 24bit so we don't need to deal with palette
int nMaxDelta = 1;
CPPUNIT_ASSERT(checkRect(aBitmap, 0, 8, 8, Color(0xff, 0xff, 0xff), nMaxDelta));
CPPUNIT_ASSERT(checkRect(aBitmap, 1, 8, 8, Color(0x36, 0x36, 0x36), nMaxDelta));
CPPUNIT_ASSERT(checkRect(aBitmap, 2, 8, 8, Color(0xb6, 0xb6, 0xb6), nMaxDelta));
CPPUNIT_ASSERT(checkRect(aBitmap, 3, 8, 8, Color(0x12, 0x12, 0x12), nMaxDelta));
CPPUNIT_ASSERT_EQUAL(1, getNumberOfImageComponents(aGraphic));
}
void JpegReaderTest::testReadCMYK()
{
Graphic aGraphic = loadJPG(getFullUrl(u"JPEGTestCMYK.jpeg"));
Bitmap aBitmap = aGraphic.GetBitmapEx().GetBitmap();
Size aSize = aBitmap.GetSizePixel();
CPPUNIT_ASSERT_EQUAL(tools::Long(12), aSize.Width());
CPPUNIT_ASSERT_EQUAL(tools::Long(12), aSize.Height());
int maxDelta = 1;
CPPUNIT_ASSERT(checkRect(aBitmap, 0, 8, 8, Color(0xff, 0xff, 0xff), maxDelta));
CPPUNIT_ASSERT(checkRect(aBitmap, 1, 8, 8, Color(0xff, 0x00, 0x00), maxDelta));
CPPUNIT_ASSERT(checkRect(aBitmap, 2, 8, 8, Color(0x00, 0xff, 0x00), maxDelta));
CPPUNIT_ASSERT(checkRect(aBitmap, 3, 8, 8, Color(0x00, 0x00, 0xff), maxDelta));
CPPUNIT_ASSERT_EQUAL(4, getNumberOfImageComponents(aGraphic));
}
void JpegReaderTest::testTdf138950()
{
Graphic aGraphic = loadJPG(getFullUrl(u"tdf138950.jpeg"));
Bitmap aBitmap = aGraphic.GetBitmapEx().GetBitmap();
Size aSize = aBitmap.GetSizePixel();
CPPUNIT_ASSERT_EQUAL(tools::Long(720), aSize.Width());
CPPUNIT_ASSERT_EQUAL(tools::Long(1280), aSize.Height());
BitmapScopedReadAccess pReadAccess(aBitmap);
int nBlackCount = 0;
for (tools::Long nY = 0; nY < aSize.Height(); ++nY)
{
for (tools::Long nX = 0; nX < aSize.Width(); ++nX)
{
const Color aColor = pReadAccess->GetColor(nY, nX);
if ((aColor.GetRed() == 0x00) && (aColor.GetGreen() == 0x00)
&& (aColor.GetBlue() == 0x00))
++nBlackCount;
}
}
// Without the fix in place, this test would have failed with
// - Expected: 0
// - Actual : 921600
CPPUNIT_ASSERT_EQUAL(0, nBlackCount);
}
CPPUNIT_TEST_SUITE_REGISTRATION(JpegReaderTest);
CPPUNIT_PLUGIN_IMPLEMENT();
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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