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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 <test/setupvcl.hxx>
#include <unotest/bootstrapfixturebase.hxx>
#include <vcl/graphicfilter.hxx>
#include <vcl/bitmapaccess.hxx>
class JpegReaderTest : public test::BootstrapFixtureBase
{
OUString maDataUrl;
OUString getFullUrl(const OUString& sFileName)
{
return m_directories.getURLFromSrc(maDataUrl) + sFileName;
}
Bitmap loadJPG(const OUString& aURL);
public:
JpegReaderTest() :
maDataUrl("/vcl/qa/cppunit/jpeg/data/")
{}
void testReadRGB();
void testReadGray();
void testReadCMYK();
CPPUNIT_TEST_SUITE(JpegReaderTest);
CPPUNIT_TEST(testReadRGB);
CPPUNIT_TEST(testReadGray);
CPPUNIT_TEST(testReadCMYK);
CPPUNIT_TEST_SUITE_END();
};
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);
}
bool checkRect(Bitmap& rBitmap, int aLayerNumber, long nAreaHeight, long nAreaWidth, Color aExpectedColor, int nMaxDelta)
{
Bitmap::ScopedWriteAccess pAccess(rBitmap);
long nWidth = std::min(nAreaWidth, pAccess->Width());
long nHeight = std::min(nAreaHeight, pAccess->Height());
long firstX = 0 + aLayerNumber;
long firstY = 0 + aLayerNumber;
long lastX = nWidth - 1 - aLayerNumber;
long lastY = nHeight - 1 - aLayerNumber;
int delta;
for (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 (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;
}
Bitmap JpegReaderTest::loadJPG(const OUString& aURL)
{
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
Graphic aGraphic;
SvFileStream aFileStream(aURL, StreamMode::READ);
bool bResult = rFilter.ImportGraphic(aGraphic, aURL, aFileStream) == 0;
CPPUNIT_ASSERT(bResult);
return aGraphic.GetBitmapEx().GetBitmap();
}
void JpegReaderTest::testReadRGB()
{
Bitmap aBitmap = loadJPG(getFullUrl("JPEGTestRGB.jpeg"));
Size aSize = aBitmap.GetSizePixel();
CPPUNIT_ASSERT_EQUAL(12L, aSize.Width());
CPPUNIT_ASSERT_EQUAL(12L, 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));
}
void JpegReaderTest::testReadGray()
{
Bitmap aBitmap = loadJPG(getFullUrl("JPEGTestGray.jpeg"));
Size aSize = aBitmap.GetSizePixel();
CPPUNIT_ASSERT_EQUAL(12L, aSize.Width());
CPPUNIT_ASSERT_EQUAL(12L, 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));
}
void JpegReaderTest::testReadCMYK()
{
Bitmap aBitmap = loadJPG(getFullUrl("JPEGTestCMYK.jpeg"));
Size aSize = aBitmap.GetSizePixel();
CPPUNIT_ASSERT_EQUAL(12L, aSize.Width());
CPPUNIT_ASSERT_EQUAL(12L, 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_TEST_SUITE_REGISTRATION(JpegReaderTest);
CPPUNIT_PLUGIN_IMPLEMENT();
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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