| OLD | NEW |
| 1 /* | 1 /* |
| 2 * Copyright 2015 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2015 The WebRTC Project Authors. All rights reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ | 9 */ |
| 10 | 10 |
| 11 #include "webrtc/base/bitbuffer.h" | 11 #include "webrtc/base/bitbuffer.h" |
| 12 #include "webrtc/base/bytebuffer.h" | 12 #include "webrtc/base/bytebuffer.h" |
| 13 #include "webrtc/base/common.h" | 13 #include "webrtc/base/common.h" |
| 14 #include "webrtc/base/gunit.h" | 14 #include "webrtc/base/gunit.h" |
| 15 | 15 |
| 16 namespace rtc { | 16 namespace rtc { |
| 17 | 17 |
| 18 TEST(BitBufferTest, ConsumeBits) { | 18 TEST(BitBufferTest, ConsumeBits) { |
| 19 const uint8 bytes[64] = {0}; | 19 const uint8_t bytes[64] = {0}; |
| 20 BitBuffer buffer(bytes, 32); | 20 BitBuffer buffer(bytes, 32); |
| 21 uint64 total_bits = 32 * 8; | 21 uint64_t total_bits = 32 * 8; |
| 22 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); | 22 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); |
| 23 EXPECT_TRUE(buffer.ConsumeBits(3)); | 23 EXPECT_TRUE(buffer.ConsumeBits(3)); |
| 24 total_bits -= 3; | 24 total_bits -= 3; |
| 25 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); | 25 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); |
| 26 EXPECT_TRUE(buffer.ConsumeBits(3)); | 26 EXPECT_TRUE(buffer.ConsumeBits(3)); |
| 27 total_bits -= 3; | 27 total_bits -= 3; |
| 28 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); | 28 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); |
| 29 EXPECT_TRUE(buffer.ConsumeBits(15)); | 29 EXPECT_TRUE(buffer.ConsumeBits(15)); |
| 30 total_bits -= 15; | 30 total_bits -= 15; |
| 31 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); | 31 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); |
| 32 EXPECT_TRUE(buffer.ConsumeBits(37)); | 32 EXPECT_TRUE(buffer.ConsumeBits(37)); |
| 33 total_bits -= 37; | 33 total_bits -= 37; |
| 34 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); | 34 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); |
| 35 | 35 |
| 36 EXPECT_FALSE(buffer.ConsumeBits(32 * 8)); | 36 EXPECT_FALSE(buffer.ConsumeBits(32 * 8)); |
| 37 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); | 37 EXPECT_EQ(total_bits, buffer.RemainingBitCount()); |
| 38 } | 38 } |
| 39 | 39 |
| 40 TEST(BitBufferTest, ReadBytesAligned) { | 40 TEST(BitBufferTest, ReadBytesAligned) { |
| 41 const uint8 bytes[] = {0x0A, 0xBC, 0xDE, 0xF1, 0x23, 0x45, 0x67, 0x89}; | 41 const uint8_t bytes[] = {0x0A, 0xBC, 0xDE, 0xF1, 0x23, 0x45, 0x67, 0x89}; |
| 42 uint8 val8; | 42 uint8_t val8; |
| 43 uint16 val16; | 43 uint16_t val16; |
| 44 uint32 val32; | 44 uint32_t val32; |
| 45 BitBuffer buffer(bytes, 8); | 45 BitBuffer buffer(bytes, 8); |
| 46 EXPECT_TRUE(buffer.ReadUInt8(&val8)); | 46 EXPECT_TRUE(buffer.ReadUInt8(&val8)); |
| 47 EXPECT_EQ(0x0Au, val8); | 47 EXPECT_EQ(0x0Au, val8); |
| 48 EXPECT_TRUE(buffer.ReadUInt8(&val8)); | 48 EXPECT_TRUE(buffer.ReadUInt8(&val8)); |
| 49 EXPECT_EQ(0xBCu, val8); | 49 EXPECT_EQ(0xBCu, val8); |
| 50 EXPECT_TRUE(buffer.ReadUInt16(&val16)); | 50 EXPECT_TRUE(buffer.ReadUInt16(&val16)); |
| 51 EXPECT_EQ(0xDEF1u, val16); | 51 EXPECT_EQ(0xDEF1u, val16); |
| 52 EXPECT_TRUE(buffer.ReadUInt32(&val32)); | 52 EXPECT_TRUE(buffer.ReadUInt32(&val32)); |
| 53 EXPECT_EQ(0x23456789u, val32); | 53 EXPECT_EQ(0x23456789u, val32); |
| 54 } | 54 } |
| 55 | 55 |
| 56 TEST(BitBufferTest, ReadBytesOffset4) { | 56 TEST(BitBufferTest, ReadBytesOffset4) { |
| 57 const uint8 bytes[] = {0x0A, 0xBC, 0xDE, 0xF1, 0x23, 0x45, 0x67, 0x89, 0x0A}; | 57 const uint8_t bytes[] = {0x0A, 0xBC, 0xDE, 0xF1, 0x23, |
| 58 uint8 val8; | 58 0x45, 0x67, 0x89, 0x0A}; |
| 59 uint16 val16; | 59 uint8_t val8; |
| 60 uint32 val32; | 60 uint16_t val16; |
| 61 uint32_t val32; |
| 61 BitBuffer buffer(bytes, 9); | 62 BitBuffer buffer(bytes, 9); |
| 62 EXPECT_TRUE(buffer.ConsumeBits(4)); | 63 EXPECT_TRUE(buffer.ConsumeBits(4)); |
| 63 | 64 |
| 64 EXPECT_TRUE(buffer.ReadUInt8(&val8)); | 65 EXPECT_TRUE(buffer.ReadUInt8(&val8)); |
| 65 EXPECT_EQ(0xABu, val8); | 66 EXPECT_EQ(0xABu, val8); |
| 66 EXPECT_TRUE(buffer.ReadUInt8(&val8)); | 67 EXPECT_TRUE(buffer.ReadUInt8(&val8)); |
| 67 EXPECT_EQ(0xCDu, val8); | 68 EXPECT_EQ(0xCDu, val8); |
| 68 EXPECT_TRUE(buffer.ReadUInt16(&val16)); | 69 EXPECT_TRUE(buffer.ReadUInt16(&val16)); |
| 69 EXPECT_EQ(0xEF12u, val16); | 70 EXPECT_EQ(0xEF12u, val16); |
| 70 EXPECT_TRUE(buffer.ReadUInt32(&val32)); | 71 EXPECT_TRUE(buffer.ReadUInt32(&val32)); |
| (...skipping 10 matching lines...) Expand all Loading... |
| 81 // 0b10010111, | 82 // 0b10010111, |
| 82 // 0b01010011, | 83 // 0b01010011, |
| 83 // 0b00001110, | 84 // 0b00001110, |
| 84 // 0b11001010, | 85 // 0b11001010, |
| 85 // 0b10000110, | 86 // 0b10000110, |
| 86 // 0b01000010 | 87 // 0b01000010 |
| 87 // xxxxx <-- last 5 bits unused. | 88 // xxxxx <-- last 5 bits unused. |
| 88 | 89 |
| 89 // The bytes. It almost looks like counting down by two at a time, except the | 90 // The bytes. It almost looks like counting down by two at a time, except the |
| 90 // jump at 5->3->0, since that's when the high bit is turned off. | 91 // jump at 5->3->0, since that's when the high bit is turned off. |
| 91 const uint8 bytes[] = {0x1F, 0xDB, 0x97, 0x53, 0x0E, 0xCA, 0x86, 0x42}; | 92 const uint8_t bytes[] = {0x1F, 0xDB, 0x97, 0x53, 0x0E, 0xCA, 0x86, 0x42}; |
| 92 | 93 |
| 93 uint8 val8; | 94 uint8_t val8; |
| 94 uint16 val16; | 95 uint16_t val16; |
| 95 uint32 val32; | 96 uint32_t val32; |
| 96 BitBuffer buffer(bytes, 8); | 97 BitBuffer buffer(bytes, 8); |
| 97 EXPECT_TRUE(buffer.ConsumeBits(3)); | 98 EXPECT_TRUE(buffer.ConsumeBits(3)); |
| 98 EXPECT_TRUE(buffer.ReadUInt8(&val8)); | 99 EXPECT_TRUE(buffer.ReadUInt8(&val8)); |
| 99 EXPECT_EQ(0xFEu, val8); | 100 EXPECT_EQ(0xFEu, val8); |
| 100 EXPECT_TRUE(buffer.ReadUInt16(&val16)); | 101 EXPECT_TRUE(buffer.ReadUInt16(&val16)); |
| 101 EXPECT_EQ(0xDCBAu, val16); | 102 EXPECT_EQ(0xDCBAu, val16); |
| 102 EXPECT_TRUE(buffer.ReadUInt32(&val32)); | 103 EXPECT_TRUE(buffer.ReadUInt32(&val32)); |
| 103 EXPECT_EQ(0x98765432u, val32); | 104 EXPECT_EQ(0x98765432u, val32); |
| 104 // 5 bits left unread. Not enough to read a uint8. | 105 // 5 bits left unread. Not enough to read a uint8_t. |
| 105 EXPECT_EQ(5u, buffer.RemainingBitCount()); | 106 EXPECT_EQ(5u, buffer.RemainingBitCount()); |
| 106 EXPECT_FALSE(buffer.ReadUInt8(&val8)); | 107 EXPECT_FALSE(buffer.ReadUInt8(&val8)); |
| 107 } | 108 } |
| 108 | 109 |
| 109 TEST(BitBufferTest, ReadBits) { | 110 TEST(BitBufferTest, ReadBits) { |
| 110 // Bit values are: | 111 // Bit values are: |
| 111 // 0b01001101, | 112 // 0b01001101, |
| 112 // 0b00110010 | 113 // 0b00110010 |
| 113 const uint8 bytes[] = {0x4D, 0x32}; | 114 const uint8_t bytes[] = {0x4D, 0x32}; |
| 114 uint32_t val; | 115 uint32_t val; |
| 115 BitBuffer buffer(bytes, 2); | 116 BitBuffer buffer(bytes, 2); |
| 116 EXPECT_TRUE(buffer.ReadBits(&val, 3)); | 117 EXPECT_TRUE(buffer.ReadBits(&val, 3)); |
| 117 // 0b010 | 118 // 0b010 |
| 118 EXPECT_EQ(0x2u, val); | 119 EXPECT_EQ(0x2u, val); |
| 119 EXPECT_TRUE(buffer.ReadBits(&val, 2)); | 120 EXPECT_TRUE(buffer.ReadBits(&val, 2)); |
| 120 // 0b01 | 121 // 0b01 |
| 121 EXPECT_EQ(0x1u, val); | 122 EXPECT_EQ(0x1u, val); |
| 122 EXPECT_TRUE(buffer.ReadBits(&val, 7)); | 123 EXPECT_TRUE(buffer.ReadBits(&val, 7)); |
| 123 // 0b1010011 | 124 // 0b1010011 |
| 124 EXPECT_EQ(0x53u, val); | 125 EXPECT_EQ(0x53u, val); |
| 125 EXPECT_TRUE(buffer.ReadBits(&val, 2)); | 126 EXPECT_TRUE(buffer.ReadBits(&val, 2)); |
| 126 // 0b00 | 127 // 0b00 |
| 127 EXPECT_EQ(0x0u, val); | 128 EXPECT_EQ(0x0u, val); |
| 128 EXPECT_TRUE(buffer.ReadBits(&val, 1)); | 129 EXPECT_TRUE(buffer.ReadBits(&val, 1)); |
| 129 // 0b1 | 130 // 0b1 |
| 130 EXPECT_EQ(0x1u, val); | 131 EXPECT_EQ(0x1u, val); |
| 131 EXPECT_TRUE(buffer.ReadBits(&val, 1)); | 132 EXPECT_TRUE(buffer.ReadBits(&val, 1)); |
| 132 // 0b0 | 133 // 0b0 |
| 133 EXPECT_EQ(0x0u, val); | 134 EXPECT_EQ(0x0u, val); |
| 134 | 135 |
| 135 EXPECT_FALSE(buffer.ReadBits(&val, 1)); | 136 EXPECT_FALSE(buffer.ReadBits(&val, 1)); |
| 136 } | 137 } |
| 137 | 138 |
| 138 TEST(BitBufferTest, SetOffsetValues) { | 139 TEST(BitBufferTest, SetOffsetValues) { |
| 139 uint8 bytes[4] = {0}; | 140 uint8_t bytes[4] = {0}; |
| 140 BitBufferWriter buffer(bytes, 4); | 141 BitBufferWriter buffer(bytes, 4); |
| 141 | 142 |
| 142 size_t byte_offset, bit_offset; | 143 size_t byte_offset, bit_offset; |
| 143 // Bit offsets are [0,7]. | 144 // Bit offsets are [0,7]. |
| 144 EXPECT_TRUE(buffer.Seek(0, 0)); | 145 EXPECT_TRUE(buffer.Seek(0, 0)); |
| 145 EXPECT_TRUE(buffer.Seek(0, 7)); | 146 EXPECT_TRUE(buffer.Seek(0, 7)); |
| 146 buffer.GetCurrentOffset(&byte_offset, &bit_offset); | 147 buffer.GetCurrentOffset(&byte_offset, &bit_offset); |
| 147 EXPECT_EQ(0u, byte_offset); | 148 EXPECT_EQ(0u, byte_offset); |
| 148 EXPECT_EQ(7u, bit_offset); | 149 EXPECT_EQ(7u, bit_offset); |
| 149 EXPECT_FALSE(buffer.Seek(0, 8)); | 150 EXPECT_FALSE(buffer.Seek(0, 8)); |
| (...skipping 17 matching lines...) Expand all Loading... |
| 167 // Disable death test on Android because it relies on fork() and doesn't play | 168 // Disable death test on Android because it relies on fork() and doesn't play |
| 168 // nicely. | 169 // nicely. |
| 169 #if defined(GTEST_HAS_DEATH_TEST) | 170 #if defined(GTEST_HAS_DEATH_TEST) |
| 170 #if !defined(WEBRTC_ANDROID) | 171 #if !defined(WEBRTC_ANDROID) |
| 171 // Passing a NULL out parameter is death. | 172 // Passing a NULL out parameter is death. |
| 172 EXPECT_DEATH(buffer.GetCurrentOffset(&byte_offset, NULL), ""); | 173 EXPECT_DEATH(buffer.GetCurrentOffset(&byte_offset, NULL), ""); |
| 173 #endif | 174 #endif |
| 174 #endif | 175 #endif |
| 175 } | 176 } |
| 176 | 177 |
| 177 uint64 GolombEncoded(uint32 val) { | 178 uint64_t GolombEncoded(uint32_t val) { |
| 178 val++; | 179 val++; |
| 179 uint32 bit_counter = val; | 180 uint32_t bit_counter = val; |
| 180 uint64 bit_count = 0; | 181 uint64_t bit_count = 0; |
| 181 while (bit_counter > 0) { | 182 while (bit_counter > 0) { |
| 182 bit_count++; | 183 bit_count++; |
| 183 bit_counter >>= 1; | 184 bit_counter >>= 1; |
| 184 } | 185 } |
| 185 return static_cast<uint64>(val) << (64 - (bit_count * 2 - 1)); | 186 return static_cast<uint64_t>(val) << (64 - (bit_count * 2 - 1)); |
| 186 } | 187 } |
| 187 | 188 |
| 188 TEST(BitBufferTest, GolombUint32Values) { | 189 TEST(BitBufferTest, GolombUint32Values) { |
| 189 ByteBuffer byteBuffer; | 190 ByteBuffer byteBuffer; |
| 190 byteBuffer.Resize(16); | 191 byteBuffer.Resize(16); |
| 191 BitBuffer buffer(reinterpret_cast<const uint8*>(byteBuffer.Data()), | 192 BitBuffer buffer(reinterpret_cast<const uint8_t*>(byteBuffer.Data()), |
| 192 byteBuffer.Capacity()); | 193 byteBuffer.Capacity()); |
| 193 // Test over the uint32 range with a large enough step that the test doesn't | 194 // Test over the uint32_t range with a large enough step that the test doesn't |
| 194 // take forever. Around 20,000 iterations should do. | 195 // take forever. Around 20,000 iterations should do. |
| 195 const int kStep = std::numeric_limits<uint32>::max() / 20000; | 196 const int kStep = std::numeric_limits<uint32_t>::max() / 20000; |
| 196 for (uint32 i = 0; i < std::numeric_limits<uint32>::max() - kStep; | 197 for (uint32_t i = 0; i < std::numeric_limits<uint32_t>::max() - kStep; |
| 197 i += kStep) { | 198 i += kStep) { |
| 198 uint64 encoded_val = GolombEncoded(i); | 199 uint64_t encoded_val = GolombEncoded(i); |
| 199 byteBuffer.Clear(); | 200 byteBuffer.Clear(); |
| 200 byteBuffer.WriteUInt64(encoded_val); | 201 byteBuffer.WriteUInt64(encoded_val); |
| 201 uint32 decoded_val; | 202 uint32_t decoded_val; |
| 202 EXPECT_TRUE(buffer.Seek(0, 0)); | 203 EXPECT_TRUE(buffer.Seek(0, 0)); |
| 203 EXPECT_TRUE(buffer.ReadExponentialGolomb(&decoded_val)); | 204 EXPECT_TRUE(buffer.ReadExponentialGolomb(&decoded_val)); |
| 204 EXPECT_EQ(i, decoded_val); | 205 EXPECT_EQ(i, decoded_val); |
| 205 } | 206 } |
| 206 } | 207 } |
| 207 | 208 |
| 208 TEST(BitBufferTest, SignedGolombValues) { | 209 TEST(BitBufferTest, SignedGolombValues) { |
| 209 uint8_t golomb_bits[] = { | 210 uint8_t golomb_bits[] = { |
| 210 0x80, // 1 | 211 0x80, // 1 |
| 211 0x40, // 010 | 212 0x40, // 010 |
| 212 0x60, // 011 | 213 0x60, // 011 |
| 213 0x20, // 00100 | 214 0x20, // 00100 |
| 214 0x38, // 00111 | 215 0x38, // 00111 |
| 215 }; | 216 }; |
| 216 int32_t expected[] = {0, 1, -1, 2, -3}; | 217 int32_t expected[] = {0, 1, -1, 2, -3}; |
| 217 for (size_t i = 0; i < sizeof(golomb_bits); ++i) { | 218 for (size_t i = 0; i < sizeof(golomb_bits); ++i) { |
| 218 BitBuffer buffer(&golomb_bits[i], 1); | 219 BitBuffer buffer(&golomb_bits[i], 1); |
| 219 int32_t decoded_val; | 220 int32_t decoded_val; |
| 220 ASSERT_TRUE(buffer.ReadSignedExponentialGolomb(&decoded_val)); | 221 ASSERT_TRUE(buffer.ReadSignedExponentialGolomb(&decoded_val)); |
| 221 EXPECT_EQ(expected[i], decoded_val) | 222 EXPECT_EQ(expected[i], decoded_val) |
| 222 << "Mismatch in expected/decoded value for golomb_bits[" << i | 223 << "Mismatch in expected/decoded value for golomb_bits[" << i |
| 223 << "]: " << static_cast<int>(golomb_bits[i]); | 224 << "]: " << static_cast<int>(golomb_bits[i]); |
| 224 } | 225 } |
| 225 } | 226 } |
| 226 | 227 |
| 227 TEST(BitBufferTest, NoGolombOverread) { | 228 TEST(BitBufferTest, NoGolombOverread) { |
| 228 const uint8 bytes[] = {0x00, 0xFF, 0xFF}; | 229 const uint8_t bytes[] = {0x00, 0xFF, 0xFF}; |
| 229 // Make sure the bit buffer correctly enforces byte length on golomb reads. | 230 // Make sure the bit buffer correctly enforces byte length on golomb reads. |
| 230 // If it didn't, the above buffer would be valid at 3 bytes. | 231 // If it didn't, the above buffer would be valid at 3 bytes. |
| 231 BitBuffer buffer(bytes, 1); | 232 BitBuffer buffer(bytes, 1); |
| 232 uint32 decoded_val; | 233 uint32_t decoded_val; |
| 233 EXPECT_FALSE(buffer.ReadExponentialGolomb(&decoded_val)); | 234 EXPECT_FALSE(buffer.ReadExponentialGolomb(&decoded_val)); |
| 234 | 235 |
| 235 BitBuffer longer_buffer(bytes, 2); | 236 BitBuffer longer_buffer(bytes, 2); |
| 236 EXPECT_FALSE(longer_buffer.ReadExponentialGolomb(&decoded_val)); | 237 EXPECT_FALSE(longer_buffer.ReadExponentialGolomb(&decoded_val)); |
| 237 | 238 |
| 238 BitBuffer longest_buffer(bytes, 3); | 239 BitBuffer longest_buffer(bytes, 3); |
| 239 EXPECT_TRUE(longest_buffer.ReadExponentialGolomb(&decoded_val)); | 240 EXPECT_TRUE(longest_buffer.ReadExponentialGolomb(&decoded_val)); |
| 240 // Golomb should have read 9 bits, so 0x01FF, and since it is golomb, the | 241 // Golomb should have read 9 bits, so 0x01FF, and since it is golomb, the |
| 241 // result is 0x01FF - 1 = 0x01FE. | 242 // result is 0x01FF - 1 = 0x01FE. |
| 242 EXPECT_EQ(0x01FEu, decoded_val); | 243 EXPECT_EQ(0x01FEu, decoded_val); |
| 243 } | 244 } |
| 244 | 245 |
| 245 TEST(BitBufferWriterTest, SymmetricReadWrite) { | 246 TEST(BitBufferWriterTest, SymmetricReadWrite) { |
| 246 uint8 bytes[16] = {0}; | 247 uint8_t bytes[16] = {0}; |
| 247 BitBufferWriter buffer(bytes, 4); | 248 BitBufferWriter buffer(bytes, 4); |
| 248 | 249 |
| 249 // Write some bit data at various sizes. | 250 // Write some bit data at various sizes. |
| 250 EXPECT_TRUE(buffer.WriteBits(0x2u, 3)); | 251 EXPECT_TRUE(buffer.WriteBits(0x2u, 3)); |
| 251 EXPECT_TRUE(buffer.WriteBits(0x1u, 2)); | 252 EXPECT_TRUE(buffer.WriteBits(0x1u, 2)); |
| 252 EXPECT_TRUE(buffer.WriteBits(0x53u, 7)); | 253 EXPECT_TRUE(buffer.WriteBits(0x53u, 7)); |
| 253 EXPECT_TRUE(buffer.WriteBits(0x0u, 2)); | 254 EXPECT_TRUE(buffer.WriteBits(0x0u, 2)); |
| 254 EXPECT_TRUE(buffer.WriteBits(0x1u, 1)); | 255 EXPECT_TRUE(buffer.WriteBits(0x1u, 1)); |
| 255 EXPECT_TRUE(buffer.WriteBits(0x1ABCDu, 17)); | 256 EXPECT_TRUE(buffer.WriteBits(0x1ABCDu, 17)); |
| 256 // That should be all that fits in the buffer. | 257 // That should be all that fits in the buffer. |
| 257 EXPECT_FALSE(buffer.WriteBits(1, 1)); | 258 EXPECT_FALSE(buffer.WriteBits(1, 1)); |
| 258 | 259 |
| 259 EXPECT_TRUE(buffer.Seek(0, 0)); | 260 EXPECT_TRUE(buffer.Seek(0, 0)); |
| 260 uint32 val; | 261 uint32_t val; |
| 261 EXPECT_TRUE(buffer.ReadBits(&val, 3)); | 262 EXPECT_TRUE(buffer.ReadBits(&val, 3)); |
| 262 EXPECT_EQ(0x2u, val); | 263 EXPECT_EQ(0x2u, val); |
| 263 EXPECT_TRUE(buffer.ReadBits(&val, 2)); | 264 EXPECT_TRUE(buffer.ReadBits(&val, 2)); |
| 264 EXPECT_EQ(0x1u, val); | 265 EXPECT_EQ(0x1u, val); |
| 265 EXPECT_TRUE(buffer.ReadBits(&val, 7)); | 266 EXPECT_TRUE(buffer.ReadBits(&val, 7)); |
| 266 EXPECT_EQ(0x53u, val); | 267 EXPECT_EQ(0x53u, val); |
| 267 EXPECT_TRUE(buffer.ReadBits(&val, 2)); | 268 EXPECT_TRUE(buffer.ReadBits(&val, 2)); |
| 268 EXPECT_EQ(0x0u, val); | 269 EXPECT_EQ(0x0u, val); |
| 269 EXPECT_TRUE(buffer.ReadBits(&val, 1)); | 270 EXPECT_TRUE(buffer.ReadBits(&val, 1)); |
| 270 EXPECT_EQ(0x1u, val); | 271 EXPECT_EQ(0x1u, val); |
| 271 EXPECT_TRUE(buffer.ReadBits(&val, 17)); | 272 EXPECT_TRUE(buffer.ReadBits(&val, 17)); |
| 272 EXPECT_EQ(0x1ABCDu, val); | 273 EXPECT_EQ(0x1ABCDu, val); |
| 273 // And there should be nothing left. | 274 // And there should be nothing left. |
| 274 EXPECT_FALSE(buffer.ReadBits(&val, 1)); | 275 EXPECT_FALSE(buffer.ReadBits(&val, 1)); |
| 275 } | 276 } |
| 276 | 277 |
| 277 TEST(BitBufferWriterTest, SymmetricBytesMisaligned) { | 278 TEST(BitBufferWriterTest, SymmetricBytesMisaligned) { |
| 278 uint8 bytes[16] = {0}; | 279 uint8_t bytes[16] = {0}; |
| 279 BitBufferWriter buffer(bytes, 16); | 280 BitBufferWriter buffer(bytes, 16); |
| 280 | 281 |
| 281 // Offset 3, to get things misaligned. | 282 // Offset 3, to get things misaligned. |
| 282 EXPECT_TRUE(buffer.ConsumeBits(3)); | 283 EXPECT_TRUE(buffer.ConsumeBits(3)); |
| 283 EXPECT_TRUE(buffer.WriteUInt8(0x12u)); | 284 EXPECT_TRUE(buffer.WriteUInt8(0x12u)); |
| 284 EXPECT_TRUE(buffer.WriteUInt16(0x3456u)); | 285 EXPECT_TRUE(buffer.WriteUInt16(0x3456u)); |
| 285 EXPECT_TRUE(buffer.WriteUInt32(0x789ABCDEu)); | 286 EXPECT_TRUE(buffer.WriteUInt32(0x789ABCDEu)); |
| 286 | 287 |
| 287 buffer.Seek(0, 3); | 288 buffer.Seek(0, 3); |
| 288 uint8 val8; | 289 uint8_t val8; |
| 289 uint16 val16; | 290 uint16_t val16; |
| 290 uint32 val32; | 291 uint32_t val32; |
| 291 EXPECT_TRUE(buffer.ReadUInt8(&val8)); | 292 EXPECT_TRUE(buffer.ReadUInt8(&val8)); |
| 292 EXPECT_EQ(0x12u, val8); | 293 EXPECT_EQ(0x12u, val8); |
| 293 EXPECT_TRUE(buffer.ReadUInt16(&val16)); | 294 EXPECT_TRUE(buffer.ReadUInt16(&val16)); |
| 294 EXPECT_EQ(0x3456u, val16); | 295 EXPECT_EQ(0x3456u, val16); |
| 295 EXPECT_TRUE(buffer.ReadUInt32(&val32)); | 296 EXPECT_TRUE(buffer.ReadUInt32(&val32)); |
| 296 EXPECT_EQ(0x789ABCDEu, val32); | 297 EXPECT_EQ(0x789ABCDEu, val32); |
| 297 } | 298 } |
| 298 | 299 |
| 299 TEST(BitBufferWriterTest, SymmetricGolomb) { | 300 TEST(BitBufferWriterTest, SymmetricGolomb) { |
| 300 char test_string[] = "my precious"; | 301 char test_string[] = "my precious"; |
| 301 uint8 bytes[64] = {0}; | 302 uint8_t bytes[64] = {0}; |
| 302 BitBufferWriter buffer(bytes, 64); | 303 BitBufferWriter buffer(bytes, 64); |
| 303 for (size_t i = 0; i < ARRAY_SIZE(test_string); ++i) { | 304 for (size_t i = 0; i < ARRAY_SIZE(test_string); ++i) { |
| 304 EXPECT_TRUE(buffer.WriteExponentialGolomb(test_string[i])); | 305 EXPECT_TRUE(buffer.WriteExponentialGolomb(test_string[i])); |
| 305 } | 306 } |
| 306 buffer.Seek(0, 0); | 307 buffer.Seek(0, 0); |
| 307 for (size_t i = 0; i < ARRAY_SIZE(test_string); ++i) { | 308 for (size_t i = 0; i < ARRAY_SIZE(test_string); ++i) { |
| 308 uint32 val; | 309 uint32_t val; |
| 309 EXPECT_TRUE(buffer.ReadExponentialGolomb(&val)); | 310 EXPECT_TRUE(buffer.ReadExponentialGolomb(&val)); |
| 310 EXPECT_LE(val, std::numeric_limits<uint8>::max()); | 311 EXPECT_LE(val, std::numeric_limits<uint8_t>::max()); |
| 311 EXPECT_EQ(test_string[i], static_cast<char>(val)); | 312 EXPECT_EQ(test_string[i], static_cast<char>(val)); |
| 312 } | 313 } |
| 313 } | 314 } |
| 314 | 315 |
| 315 TEST(BitBufferWriterTest, WriteClearsBits) { | 316 TEST(BitBufferWriterTest, WriteClearsBits) { |
| 316 uint8 bytes[] = {0xFF, 0xFF}; | 317 uint8_t bytes[] = {0xFF, 0xFF}; |
| 317 BitBufferWriter buffer(bytes, 2); | 318 BitBufferWriter buffer(bytes, 2); |
| 318 EXPECT_TRUE(buffer.ConsumeBits(3)); | 319 EXPECT_TRUE(buffer.ConsumeBits(3)); |
| 319 EXPECT_TRUE(buffer.WriteBits(0, 1)); | 320 EXPECT_TRUE(buffer.WriteBits(0, 1)); |
| 320 EXPECT_EQ(0xEFu, bytes[0]); | 321 EXPECT_EQ(0xEFu, bytes[0]); |
| 321 EXPECT_TRUE(buffer.WriteBits(0, 3)); | 322 EXPECT_TRUE(buffer.WriteBits(0, 3)); |
| 322 EXPECT_EQ(0xE1u, bytes[0]); | 323 EXPECT_EQ(0xE1u, bytes[0]); |
| 323 EXPECT_TRUE(buffer.WriteBits(0, 2)); | 324 EXPECT_TRUE(buffer.WriteBits(0, 2)); |
| 324 EXPECT_EQ(0xE0u, bytes[0]); | 325 EXPECT_EQ(0xE0u, bytes[0]); |
| 325 EXPECT_EQ(0x7F, bytes[1]); | 326 EXPECT_EQ(0x7F, bytes[1]); |
| 326 } | 327 } |
| 327 | 328 |
| 328 } // namespace rtc | 329 } // namespace rtc |
| OLD | NEW |