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Side by Side Diff: remoting/host/differ_block_unittest.cc

Issue 11470028: Move screen capturers to remoting/capturer. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 8 years ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/memory/ref_counted.h"
6 #include "remoting/host/differ_block.h"
7 #include "testing/gmock/include/gmock/gmock.h"
8
9 namespace remoting {
10
11 // Run 900 times to mimic 1280x720.
12 // TODO(fbarchard): Remove benchmark once performance is non-issue.
13 static const int kTimesToRun = 900;
14
15 static void GenerateData(uint8* data, int size) {
16 for (int i = 0; i < size; ++i) {
17 data[i] = i;
18 }
19 }
20
21 // Memory buffer large enough for 2 blocks aligned to 16 bytes.
22 static const int kSizeOfBlock = kBlockSize * kBlockSize * kBytesPerPixel;
23 uint8 block_buffer[kSizeOfBlock * 2 + 16];
24
25 void PrepareBuffers(uint8* &block1, uint8* &block2) {
26 block1 = reinterpret_cast<uint8*>
27 ((reinterpret_cast<uintptr_t>(&block_buffer[0]) + 15) & ~15);
28 GenerateData(block1, kSizeOfBlock);
29 block2 = block1 + kSizeOfBlock;
30 memcpy(block2, block1, kSizeOfBlock);
31 }
32
33 TEST(BlockDifferenceTestSame, BlockDifference) {
34 uint8* block1;
35 uint8* block2;
36 PrepareBuffers(block1, block2);
37
38 // These blocks should match.
39 for (int i = 0; i < kTimesToRun; ++i) {
40 int result = BlockDifference(block1, block2, kBlockSize * kBytesPerPixel);
41 EXPECT_EQ(0, result);
42 }
43 }
44
45 TEST(BlockDifferenceTestLast, BlockDifference) {
46 uint8* block1;
47 uint8* block2;
48 PrepareBuffers(block1, block2);
49 block2[kSizeOfBlock-2] += 1;
50
51 for (int i = 0; i < kTimesToRun; ++i) {
52 int result = BlockDifference(block1, block2, kBlockSize * kBytesPerPixel);
53 EXPECT_EQ(1, result);
54 }
55 }
56
57 TEST(BlockDifferenceTestMid, BlockDifference) {
58 uint8* block1;
59 uint8* block2;
60 PrepareBuffers(block1, block2);
61 block2[kSizeOfBlock/2+1] += 1;
62
63 for (int i = 0; i < kTimesToRun; ++i) {
64 int result = BlockDifference(block1, block2, kBlockSize * kBytesPerPixel);
65 EXPECT_EQ(1, result);
66 }
67 }
68
69 TEST(BlockDifferenceTestFirst, BlockDifference) {
70 uint8* block1;
71 uint8* block2;
72 PrepareBuffers(block1, block2);
73 block2[0] += 1;
74
75 for (int i = 0; i < kTimesToRun; ++i) {
76 int result = BlockDifference(block1, block2, kBlockSize * kBytesPerPixel);
77 EXPECT_EQ(1, result);
78 }
79 }
80
81 } // namespace remoting
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