1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216 | /* -*- 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/bootstrapfixture.hxx>
#include <vcl/bitmap.hxx>
#include <vcl/bitmapaccess.hxx>
#include <bitmapwriteaccess.hxx>
#include <tools/stream.hxx>
#include <vcl/graphicfilter.hxx>
#include <vcl/BitmapBasicMorphologyFilter.hxx>
#include <vcl/BitmapFilterStackBlur.hxx>
#include <BitmapSymmetryCheck.hxx>
#include <chrono>
namespace
{
constexpr bool constWriteResultBitmap(false);
constexpr bool constEnablePerformanceTest(false);
class BitmapFilterTest : public test::BootstrapFixture
{
public:
BitmapFilterTest()
: test::BootstrapFixture(true, false)
{
}
void testBlurCorrectness();
void testBasicMorphology();
void testPerformance();
CPPUNIT_TEST_SUITE(BitmapFilterTest);
CPPUNIT_TEST(testBlurCorrectness);
CPPUNIT_TEST(testBasicMorphology);
CPPUNIT_TEST(testPerformance);
CPPUNIT_TEST_SUITE_END();
private:
OUString getFullUrl(const OUString& sFileName)
{
return m_directories.getURLFromSrc("vcl/qa/cppunit/data/") + sFileName;
}
BitmapEx loadBitmap(const OUString& sFileName)
{
Graphic aGraphic;
const OUString aURL(getFullUrl(sFileName));
SvFileStream aFileStream(aURL, StreamMode::READ);
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
ErrCode aResult = rFilter.ImportGraphic(aGraphic, aURL, aFileStream);
CPPUNIT_ASSERT_EQUAL(ERRCODE_NONE, aResult);
return aGraphic.GetBitmapEx();
}
template <class BitmapT> // handle both Bitmap and BitmapEx
void savePNG(const OUString& sWhere, const BitmapT& rBmp)
{
SvFileStream aStream(sWhere, StreamMode::WRITE | StreamMode::TRUNC);
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
rFilter.compressAsPNG(rBmp, aStream);
}
};
void BitmapFilterTest::testBlurCorrectness()
{
// Setup test bitmap
Size aSize(41, 31);
Bitmap aBitmap24Bit(aSize, 24);
ScanlineFormat scanlineFormat = ScanlineFormat::NONE;<--- scanlineFormat is initialized
sal_uInt16 nBPP = aBitmap24Bit.GetBitCount();
{
long aMargin1 = 1;
long aMargin2 = 3;
BitmapScopedWriteAccess aWriteAccess(aBitmap24Bit);
scanlineFormat = aWriteAccess->GetScanlineFormat();<--- scanlineFormat is overwritten
aWriteAccess->Erase(COL_WHITE);
aWriteAccess->SetLineColor(COL_BLACK);
tools::Rectangle aRectangle1(aMargin1, aMargin1, aSize.Width() - 1 - aMargin1,
aSize.Height() - 1 - aMargin1);
tools::Rectangle aRectangle2(aMargin2, aMargin2, aSize.Width() - 1 - aMargin2,
aSize.Height() - 1 - aMargin2);
tools::Rectangle aRectangle3(aSize.Width() / 2, aSize.Height() / 2, aSize.Width() / 2,
aSize.Height() / 2);
aWriteAccess->DrawRect(aRectangle1);
aWriteAccess->DrawRect(aRectangle2);
aWriteAccess->DrawRect(aRectangle3);
}
if (constWriteResultBitmap)
{
savePNG("~/blurBefore.png", aBitmap24Bit);
}
// Perform blur
BitmapFilterStackBlur aBlurFilter(2);
aBitmap24Bit = aBlurFilter.filter(aBitmap24Bit);
// Check the result
if (constWriteResultBitmap)
{
savePNG("~/blurAfter.png", aBitmap24Bit);
}
// Check blurred bitmap parameters
CPPUNIT_ASSERT_EQUAL(static_cast<long>(41), aBitmap24Bit.GetSizePixel().Width());
CPPUNIT_ASSERT_EQUAL(static_cast<long>(31), aBitmap24Bit.GetSizePixel().Height());
CPPUNIT_ASSERT_EQUAL(nBPP, aBitmap24Bit.GetBitCount());
// Check that the bitmap is horizontally and vertically symmetrical
CPPUNIT_ASSERT(BitmapSymmetryCheck::check(aBitmap24Bit));
{
Bitmap::ScopedReadAccess aReadAccess(aBitmap24Bit);
CPPUNIT_ASSERT_EQUAL(scanlineFormat, aReadAccess->GetScanlineFormat());
}
}
void BitmapFilterTest::testBasicMorphology()
{
const BitmapEx aOrigBitmap = loadBitmap("testBasicMorphology.png");
const BitmapEx aRefBitmapDilated1 = loadBitmap("testBasicMorphologyDilated1.png");
const BitmapEx aRefBitmapDilated1Eroded1 = loadBitmap("testBasicMorphologyDilated1Eroded1.png");
const BitmapEx aRefBitmapDilated2 = loadBitmap("testBasicMorphologyDilated2.png");
const BitmapEx aRefBitmapDilated2Eroded1 = loadBitmap("testBasicMorphologyDilated2Eroded1.png");
BitmapEx aTransformBitmap = aOrigBitmap;
BitmapFilter::Filter(aTransformBitmap, BitmapDilateFilter(1));
if (constWriteResultBitmap)
savePNG("~/Dilated1.png", aTransformBitmap);
CPPUNIT_ASSERT_EQUAL(aRefBitmapDilated1.GetChecksum(), aTransformBitmap.GetChecksum());
BitmapFilter::Filter(aTransformBitmap, BitmapErodeFilter(1));
if (constWriteResultBitmap)
savePNG("~/Dilated1Eroded1.png", aTransformBitmap);
CPPUNIT_ASSERT_EQUAL(aRefBitmapDilated1Eroded1.GetChecksum(), aTransformBitmap.GetChecksum());
aTransformBitmap = aOrigBitmap;
BitmapFilter::Filter(aTransformBitmap, BitmapDilateFilter(2));
if (constWriteResultBitmap)
savePNG("~/Dilated2.png", aTransformBitmap);
CPPUNIT_ASSERT_EQUAL(aRefBitmapDilated2.GetChecksum(), aTransformBitmap.GetChecksum());
BitmapFilter::Filter(aTransformBitmap, BitmapErodeFilter(1));
if (constWriteResultBitmap)
savePNG("~/Dilated2Eroded1.png", aTransformBitmap);
CPPUNIT_ASSERT_EQUAL(aRefBitmapDilated2Eroded1.GetChecksum(), aTransformBitmap.GetChecksum());
}
void BitmapFilterTest::testPerformance()
{
if (!constEnablePerformanceTest)
return;
Size aSize(4000, 3000); // A rather common picture size
// Prepare bitmap
Bitmap aBigBitmap(aSize, 24);
{
long aMargin = 500;
BitmapScopedWriteAccess aWriteAccess(aBigBitmap);
aWriteAccess->Erase(COL_WHITE);
aWriteAccess->SetLineColor(COL_BLACK);
aWriteAccess->SetFillColor(COL_BLACK);
tools::Rectangle aRectangle(aMargin, aMargin, aSize.Width() - 1 - aMargin,
aSize.Height() - 1 - aMargin);
aWriteAccess->DrawRect(aRectangle);
}
int nIterations = 10;
auto start = std::chrono::high_resolution_clock::now();
Bitmap aResult;
for (int i = 0; i < nIterations; i++)
{
BitmapFilterStackBlur aBlurFilter(250);
aResult = aBlurFilter.filter(aBigBitmap);
}
auto end = std::chrono::high_resolution_clock::now();
auto elapsed = (end - start) / nIterations;
if (constWriteResultBitmap)
{
std::unique_ptr<SvFileStream> pStream(
new SvFileStream("~/BlurBigPerformance.png", StreamMode::WRITE | StreamMode::TRUNC));
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
rFilter.compressAsPNG(aResult, *pStream);
pStream.reset(new SvFileStream("~/BlurBigPerformance.txt", StreamMode::WRITE));
pStream->WriteOString("Blur average time: ");
pStream->WriteOString(OString::number(
std::chrono::duration_cast<std::chrono::milliseconds>(elapsed).count()));
pStream->WriteOString("\n");
}
}
} // namespace
CPPUNIT_TEST_SUITE_REGISTRATION(BitmapFilterTest);
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|