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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 <cppunit/TestAssert.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/plugin/TestPlugIn.h>
#include <unordered_map>
#include <vcl/bitmap.hxx>
#include <vcl/bitmapaccess.hxx>
#include <vcl/virdev.hxx>
#include <rtl/strbuf.hxx>
#include <tools/stream.hxx>
#include <vcl/graphicfilter.hxx>
#include <vcl/opengl/OpenGLHelper.hxx>
#include "BitmapSymmetryCheck.hxx"
namespace
{
class BitmapTest : public CppUnit::TestFixture
{
void testConvert();
void testScale();
void testCRC();
CPPUNIT_TEST_SUITE(BitmapTest);
CPPUNIT_TEST(testConvert);
CPPUNIT_TEST(testScale);
CPPUNIT_TEST(testCRC);
CPPUNIT_TEST_SUITE_END();
};
void BitmapTest::testConvert()
{
Bitmap aBitmap(Size(10, 10), 8);
aBitmap.Erase(COL_LIGHTGRAYBLUE);
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt16>(8), aBitmap.GetBitCount());
{
Bitmap::ScopedReadAccess pReadAccess(aBitmap);
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt16>(8), pReadAccess->GetBitCount());
#if defined MACOSX || defined IOS
//it would be nice to find and change the stride for quartz to be the same as everyone else
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uLong>(10), pReadAccess->GetScanlineSize());
#else
if (!OpenGLHelper::isVCLOpenGLEnabled())
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uLong>(12), pReadAccess->GetScanlineSize());
#endif
CPPUNIT_ASSERT(pReadAccess->HasPalette());
const BitmapColor& rColor = pReadAccess->GetPaletteColor(pReadAccess->GetPixelIndex(1, 1));
CPPUNIT_ASSERT_EQUAL(sal_Int32(204), sal_Int32(rColor.GetRed()));
CPPUNIT_ASSERT_EQUAL(sal_Int32(204), sal_Int32(rColor.GetGreen()));
CPPUNIT_ASSERT_EQUAL(sal_Int32(255), sal_Int32(rColor.GetBlue()));
}
aBitmap.Convert(BMP_CONVERSION_24BIT);
CPPUNIT_ASSERT_EQUAL(sal_uInt16(24), aBitmap.GetBitCount());
{
Bitmap::ScopedReadAccess pReadAccess(aBitmap);
#if defined LINUX || defined FREEBSD
// 24 bit Bitmap on SVP backend uses 32bit BGRA format
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt16>(32), pReadAccess->GetBitCount());
CPPUNIT_ASSERT_EQUAL(sal_uLong(40), pReadAccess->GetScanlineSize());
#else
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt16>(24), pReadAccess->GetBitCount());
#if defined WNT
if (!OpenGLHelper::isVCLOpenGLEnabled())
{
// GDI Scanlines padded to DWORD multiples, it seems
CPPUNIT_ASSERT_EQUAL(sal_uLong(32), pReadAccess->GetScanlineSize());
}
else
#endif
{
CPPUNIT_ASSERT_EQUAL(sal_uLong(30), pReadAccess->GetScanlineSize());
}
#endif
CPPUNIT_ASSERT(!pReadAccess->HasPalette());
Color aColor = pReadAccess->GetPixel(0, 0);
CPPUNIT_ASSERT_EQUAL(sal_Int32(204), sal_Int32(aColor.GetRed()));
CPPUNIT_ASSERT_EQUAL(sal_Int32(204), sal_Int32(aColor.GetGreen()));
CPPUNIT_ASSERT_EQUAL(sal_Int32(255), sal_Int32(aColor.GetBlue()));
}
}
void BitmapTest::testScale()
{
const bool bExportBitmap(false);
Bitmap aBitmap24Bit(Size(10, 10), 24);
CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt16>(24), aBitmap24Bit.GetBitCount());
{
Bitmap::ScopedWriteAccess aWriteAccess(aBitmap24Bit);
aWriteAccess->Erase(COL_WHITE);
aWriteAccess->SetLineColor(COL_BLACK);
aWriteAccess->DrawRect(Rectangle(1, 1, 8, 8));
aWriteAccess->DrawRect(Rectangle(3, 3, 6, 6));
}
BitmapSymmetryCheck aBitmapSymmetryCheck;
CPPUNIT_ASSERT_EQUAL(static_cast<long>(10), aBitmap24Bit.GetSizePixel().Width());
CPPUNIT_ASSERT_EQUAL(static_cast<long>(10), aBitmap24Bit.GetSizePixel().Height());
// Check symmetry of the bitmap
CPPUNIT_ASSERT(BitmapSymmetryCheck::check(aBitmap24Bit));
if (bExportBitmap)
{
SvFileStream aStream(OUString("~/scale_before.png"), StreamMode::WRITE | StreamMode::TRUNC);
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
rFilter.compressAsPNG(aBitmap24Bit, aStream, 9);
}
aBitmap24Bit.Scale(2, 2, BmpScaleFlag::Fast);
CPPUNIT_ASSERT_EQUAL(static_cast<long>(20), aBitmap24Bit.GetSizePixel().Width());
CPPUNIT_ASSERT_EQUAL(static_cast<long>(20), aBitmap24Bit.GetSizePixel().Height());
// After scaling the bitmap should still be symmetrical. This check guarantees that
// scaling doesn't misalign the bitmap.
CPPUNIT_ASSERT(BitmapSymmetryCheck::check(aBitmap24Bit));
if (bExportBitmap)
{
SvFileStream aStream(OUString("~/scale_after.png"), StreamMode::WRITE | StreamMode::TRUNC);
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
rFilter.compressAsPNG(aBitmap24Bit, aStream, 9);
}
}
typedef std::unordered_map<sal_uInt64, const char *> CRCHash;
void checkAndInsert(CRCHash &rHash, sal_uInt64 nCRC, const char *pLocation)
{
auto it = rHash.find(nCRC);
if (it != rHash.end()) {
OStringBuffer aBuf("CRC collision between ");
aBuf.append(pLocation);
aBuf.append(" and ");
aBuf.append(it->second);
aBuf.append(" hash is 0x");
aBuf.append((sal_Int64)nCRC, 16);
CPPUNIT_FAIL(aBuf.toString().getStr());
}
rHash[nCRC] = pLocation;
}
void checkAndInsert(CRCHash &rHash, Bitmap rBmp, const char *pLocation)
{
checkAndInsert(rHash, rBmp.GetChecksum(), pLocation);
}
Bitmap getAsBitmap(VclPtr<OutputDevice> pOut)
{
return pOut->GetBitmap(Point(), pOut->GetOutputSizePixel());
}
void BitmapTest::testCRC()
{
CRCHash aCRCs;
Bitmap aBitmap(Size(1023,759), 24, nullptr);
aBitmap.Erase(COL_BLACK);
checkAndInsert(aCRCs, aBitmap, "black bitmap");
aBitmap.Invert();
checkAndInsert(aCRCs, aBitmap, "white bitmap");
ScopedVclPtrInstance<VirtualDevice> aVDev;
aVDev->SetBackground(Wallpaper(COL_WHITE));
aVDev->SetOutputSizePixel(Size(1023, 759));
#if 0 // disabled for now - oddly breaks on OS/X - but why ?
Bitmap aWhiteCheck = getAsBitmap(aVDev);
CPPUNIT_ASSERT(aCRCs.find(aWhiteCheck.GetChecksum()) != aCRCs.end());
#endif
// a 1x1 black & white checkerboard
aVDev->DrawCheckered(Point(), aVDev->GetOutputSizePixel(), 1, 1);
Bitmap aChecker = getAsBitmap(aVDev);
checkAndInsert(aCRCs, aChecker, "checkerboard");
aChecker.Invert();
checkAndInsert(aCRCs, aChecker, "inverted checkerboard");
}
} // namespace
CPPUNIT_TEST_SUITE_REGISTRATION(BitmapTest);
CPPUNIT_PLUGIN_IMPLEMENT();
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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