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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include <string.h> | 5 #include <string.h> |
6 #include <time.h> | 6 #include <time.h> |
7 #include <vector> | 7 #include <vector> |
8 | 8 |
9 #include "skia/ext/convolver.h" | 9 #include "skia/ext/convolver.h" |
10 #include "testing/gtest/include/gtest/gtest.h" | 10 #include "testing/gtest/include/gtest/gtest.h" |
11 | 11 |
12 namespace gfx { | 12 namespace skia { |
13 | 13 |
14 namespace { | 14 namespace { |
15 | 15 |
16 // Fills the given filter with impulse functions for the range 0->num_entries. | 16 // Fills the given filter with impulse functions for the range 0->num_entries. |
17 void FillImpulseFilter(int num_entries, ConvolusionFilter1D* filter) { | 17 void FillImpulseFilter(int num_entries, ConvolusionFilter1D* filter) { |
18 float one = 1.0f; | 18 float one = 1.0f; |
19 for (int i = 0; i < num_entries; i++) | 19 for (int i = 0; i < num_entries; i++) |
20 filter->AddFilter(i, &one, 1); | 20 filter->AddFilter(i, &one, 1); |
21 } | 21 } |
22 | 22 |
23 // Filters the given input with the impulse function, and verifies that it | 23 // Filters the given input with the impulse function, and verifies that it |
24 // does not change. | 24 // does not change. |
25 void TestImpulseConvolusion(const unsigned char* data, int width, int height) { | 25 void TestImpulseConvolusion(const unsigned char* data, int width, int height) { |
26 int byte_count = width * height * 4; | 26 int byte_count = width * height * 4; |
27 | 27 |
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118 value /= 4; // Average. | 118 value /= 4; // Average. |
119 int difference = value - output[(y * dest_width + x) * 4 + channel]; | 119 int difference = value - output[(y * dest_width + x) * 4 + channel]; |
120 EXPECT_TRUE(difference >= -1 || difference <= 1); | 120 EXPECT_TRUE(difference >= -1 || difference <= 1); |
121 } | 121 } |
122 } | 122 } |
123 } | 123 } |
124 } | 124 } |
125 | 125 |
126 } // namespace gfx | 126 } // namespace gfx |
127 | 127 |
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