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Side by Side Diff: media/base/bit_reader_unittest.cc

Issue 1534273002: Switch to standard integer types in media/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: more Created 5 years ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 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 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 "media/base/bit_reader.h" 5 #include "media/base/bit_reader.h"
6 6
7 #include "testing/gtest/include/gtest/gtest.h" 7 #include "testing/gtest/include/gtest/gtest.h"
8 8
9 namespace media { 9 namespace media {
10 10
11 static void SetBit(uint8* buf, size_t size, size_t bit_pos) { 11 static void SetBit(uint8_t* buf, size_t size, size_t bit_pos) {
12 size_t byte_pos = bit_pos / 8; 12 size_t byte_pos = bit_pos / 8;
13 bit_pos -= byte_pos * 8; 13 bit_pos -= byte_pos * 8;
14 DCHECK_LT(byte_pos, size); 14 DCHECK_LT(byte_pos, size);
15 buf[byte_pos] |= (1 << (7 - bit_pos)); 15 buf[byte_pos] |= (1 << (7 - bit_pos));
16 } 16 }
17 17
18 TEST(BitReaderTest, NormalOperationTest) { 18 TEST(BitReaderTest, NormalOperationTest) {
19 uint8 value8; 19 uint8_t value8;
20 uint64 value64; 20 uint64_t value64;
21 // 0101 0101 1001 1001 repeats 4 times 21 // 0101 0101 1001 1001 repeats 4 times
22 uint8 buffer[] = {0x55, 0x99, 0x55, 0x99, 0x55, 0x99, 0x55, 0x99}; 22 uint8_t buffer[] = {0x55, 0x99, 0x55, 0x99, 0x55, 0x99, 0x55, 0x99};
23 BitReader reader1(buffer, 6); // Initialize with 6 bytes only 23 BitReader reader1(buffer, 6); // Initialize with 6 bytes only
24 24
25 EXPECT_TRUE(reader1.ReadBits(1, &value8)); 25 EXPECT_TRUE(reader1.ReadBits(1, &value8));
26 EXPECT_EQ(value8, 0); 26 EXPECT_EQ(value8, 0);
27 EXPECT_TRUE(reader1.ReadBits(8, &value8)); 27 EXPECT_TRUE(reader1.ReadBits(8, &value8));
28 EXPECT_EQ(value8, 0xab); // 1010 1011 28 EXPECT_EQ(value8, 0xab); // 1010 1011
29 EXPECT_TRUE(reader1.ReadBits(7, &value64)); 29 EXPECT_TRUE(reader1.ReadBits(7, &value64));
30 EXPECT_TRUE(reader1.ReadBits(32, &value64)); 30 EXPECT_TRUE(reader1.ReadBits(32, &value64));
31 EXPECT_EQ(value64, 0x55995599u); 31 EXPECT_EQ(value64, 0x55995599u);
32 EXPECT_FALSE(reader1.ReadBits(1, &value8)); 32 EXPECT_FALSE(reader1.ReadBits(1, &value8));
33 value8 = 0xff; 33 value8 = 0xff;
34 EXPECT_TRUE(reader1.ReadBits(0, &value8)); 34 EXPECT_TRUE(reader1.ReadBits(0, &value8));
35 EXPECT_EQ(value8, 0); 35 EXPECT_EQ(value8, 0);
36 36
37 BitReader reader2(buffer, 8); 37 BitReader reader2(buffer, 8);
38 EXPECT_TRUE(reader2.ReadBits(64, &value64)); 38 EXPECT_TRUE(reader2.ReadBits(64, &value64));
39 EXPECT_EQ(value64, 0x5599559955995599ull); 39 EXPECT_EQ(value64, 0x5599559955995599ull);
40 EXPECT_FALSE(reader2.ReadBits(1, &value8)); 40 EXPECT_FALSE(reader2.ReadBits(1, &value8));
41 EXPECT_TRUE(reader2.ReadBits(0, &value8)); 41 EXPECT_TRUE(reader2.ReadBits(0, &value8));
42 } 42 }
43 43
44 TEST(BitReaderTest, ReadBeyondEndTest) { 44 TEST(BitReaderTest, ReadBeyondEndTest) {
45 uint8 value8; 45 uint8_t value8;
46 uint8 buffer[] = {0x12}; 46 uint8_t buffer[] = {0x12};
47 BitReader reader1(buffer, sizeof(buffer)); 47 BitReader reader1(buffer, sizeof(buffer));
48 48
49 EXPECT_TRUE(reader1.ReadBits(4, &value8)); 49 EXPECT_TRUE(reader1.ReadBits(4, &value8));
50 EXPECT_FALSE(reader1.ReadBits(5, &value8)); 50 EXPECT_FALSE(reader1.ReadBits(5, &value8));
51 EXPECT_FALSE(reader1.ReadBits(1, &value8)); 51 EXPECT_FALSE(reader1.ReadBits(1, &value8));
52 EXPECT_TRUE(reader1.ReadBits(0, &value8)); 52 EXPECT_TRUE(reader1.ReadBits(0, &value8));
53 } 53 }
54 54
55 TEST(BitReaderTest, SkipBitsTest) { 55 TEST(BitReaderTest, SkipBitsTest) {
56 uint8 value8; 56 uint8_t value8;
57 uint8 buffer[] = { 0x0a, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; 57 uint8_t buffer[] = {0x0a, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
58 BitReader reader1(buffer, sizeof(buffer)); 58 BitReader reader1(buffer, sizeof(buffer));
59 59
60 EXPECT_TRUE(reader1.SkipBits(2)); 60 EXPECT_TRUE(reader1.SkipBits(2));
61 EXPECT_TRUE(reader1.ReadBits(3, &value8)); 61 EXPECT_TRUE(reader1.ReadBits(3, &value8));
62 EXPECT_EQ(value8, 1); 62 EXPECT_EQ(value8, 1);
63 EXPECT_TRUE(reader1.SkipBits(11)); 63 EXPECT_TRUE(reader1.SkipBits(11));
64 EXPECT_TRUE(reader1.ReadBits(8, &value8)); 64 EXPECT_TRUE(reader1.ReadBits(8, &value8));
65 EXPECT_EQ(value8, 3); 65 EXPECT_EQ(value8, 3);
66 EXPECT_TRUE(reader1.SkipBits(76)); 66 EXPECT_TRUE(reader1.SkipBits(76));
67 EXPECT_TRUE(reader1.ReadBits(4, &value8)); 67 EXPECT_TRUE(reader1.ReadBits(4, &value8));
68 EXPECT_EQ(value8, 13); 68 EXPECT_EQ(value8, 13);
69 EXPECT_FALSE(reader1.SkipBits(100)); 69 EXPECT_FALSE(reader1.SkipBits(100));
70 EXPECT_TRUE(reader1.SkipBits(0)); 70 EXPECT_TRUE(reader1.SkipBits(0));
71 EXPECT_FALSE(reader1.SkipBits(1)); 71 EXPECT_FALSE(reader1.SkipBits(1));
72 } 72 }
73 73
74 TEST(BitReaderTest, VariableSkipBitsTest) { 74 TEST(BitReaderTest, VariableSkipBitsTest) {
75 uint8 buffer[256] = {0}; 75 uint8_t buffer[256] = {0};
76 76
77 // The test alternates between ReadBits and SkipBits. 77 // The test alternates between ReadBits and SkipBits.
78 // The first number is the number of bits to read, the second one is the 78 // The first number is the number of bits to read, the second one is the
79 // number of bits to skip. The number of bits to read was arbitrarily chosen 79 // number of bits to skip. The number of bits to read was arbitrarily chosen
80 // while the number of bits to skip was chosen so as to cover from small skips 80 // while the number of bits to skip was chosen so as to cover from small skips
81 // to large skips. 81 // to large skips.
82 const size_t pattern_read_skip[][2] = { 82 const size_t pattern_read_skip[][2] = {
83 { 5, 17 }, 83 { 5, 17 },
84 { 4, 34 }, 84 { 4, 34 },
85 { 0, 44 }, 85 { 0, 44 },
(...skipping 27 matching lines...) Expand all
113 EXPECT_TRUE(bit_reader.ReadBits(read_bit_count, &value)); 113 EXPECT_TRUE(bit_reader.ReadBits(read_bit_count, &value));
114 EXPECT_EQ(value, 1 | (1 << (read_bit_count - 1))); 114 EXPECT_EQ(value, 1 | (1 << (read_bit_count - 1)));
115 } 115 }
116 EXPECT_TRUE(bit_reader.SkipBits(pattern_read_skip[k][1])); 116 EXPECT_TRUE(bit_reader.SkipBits(pattern_read_skip[k][1]));
117 } 117 }
118 } 118 }
119 119
120 TEST(BitReaderTest, BitsReadTest) { 120 TEST(BitReaderTest, BitsReadTest) {
121 int value; 121 int value;
122 bool flag; 122 bool flag;
123 uint8 buffer[] = { 0x0a, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; 123 uint8_t buffer[] = {0x0a, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
124 BitReader reader1(buffer, sizeof(buffer)); 124 BitReader reader1(buffer, sizeof(buffer));
125 EXPECT_EQ(reader1.bits_available(), 120); 125 EXPECT_EQ(reader1.bits_available(), 120);
126 126
127 EXPECT_TRUE(reader1.SkipBits(2)); 127 EXPECT_TRUE(reader1.SkipBits(2));
128 EXPECT_EQ(reader1.bits_read(), 2); 128 EXPECT_EQ(reader1.bits_read(), 2);
129 EXPECT_EQ(reader1.bits_available(), 118); 129 EXPECT_EQ(reader1.bits_available(), 118);
130 EXPECT_TRUE(reader1.ReadBits(3, &value)); 130 EXPECT_TRUE(reader1.ReadBits(3, &value));
131 EXPECT_EQ(reader1.bits_read(), 5); 131 EXPECT_EQ(reader1.bits_read(), 5);
132 EXPECT_EQ(reader1.bits_available(), 115); 132 EXPECT_EQ(reader1.bits_available(), 115);
133 EXPECT_TRUE(reader1.ReadFlag(&flag)); 133 EXPECT_TRUE(reader1.ReadFlag(&flag));
134 EXPECT_EQ(reader1.bits_read(), 6); 134 EXPECT_EQ(reader1.bits_read(), 6);
135 EXPECT_EQ(reader1.bits_available(), 114); 135 EXPECT_EQ(reader1.bits_available(), 114);
136 EXPECT_TRUE(reader1.SkipBits(76)); 136 EXPECT_TRUE(reader1.SkipBits(76));
137 EXPECT_EQ(reader1.bits_read(), 82); 137 EXPECT_EQ(reader1.bits_read(), 82);
138 EXPECT_EQ(reader1.bits_available(), 38); 138 EXPECT_EQ(reader1.bits_available(), 38);
139 } 139 }
140 140
141 } // namespace media 141 } // namespace media
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