pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 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 |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #include "webrtc/modules/audio_processing/transient/file_utils.h" |
| 12 | |
kwiberg | 85d8bb0 | 2016-02-17 04:39:36 | [diff] [blame] | 13 | #include <memory> |
| 14 | |
Henrik Kjellander | 98f5351 | 2015-10-28 17:17:40 | [diff] [blame] | 15 | #include "webrtc/system_wrappers/include/file_wrapper.h" |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 16 | #include "webrtc/typedefs.h" |
| 17 | |
| 18 | namespace webrtc { |
| 19 | |
| 20 | int ConvertByteArrayToFloat(const uint8_t bytes[4], float* out) { |
| 21 | if (!bytes || !out) { |
| 22 | return -1; |
| 23 | } |
| 24 | |
| 25 | uint32_t binary_value = 0; |
| 26 | for (int i = 3; i >= 0; --i) { |
| 27 | binary_value <<= 8; |
| 28 | binary_value += bytes[i]; |
| 29 | } |
| 30 | |
| 31 | *out = bit_cast<float>(binary_value); |
| 32 | |
| 33 | return 0; |
| 34 | } |
| 35 | |
| 36 | int ConvertByteArrayToDouble(const uint8_t bytes[8], double* out) { |
| 37 | if (!bytes || !out) { |
| 38 | return -1; |
| 39 | } |
| 40 | |
| 41 | uint64_t binary_value = 0; |
| 42 | for (int i = 7; i >= 0; --i) { |
| 43 | binary_value <<= 8; |
| 44 | binary_value += bytes[i]; |
| 45 | } |
| 46 | |
| 47 | *out = bit_cast<double>(binary_value); |
| 48 | |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | int ConvertFloatToByteArray(float value, uint8_t out_bytes[4]) { |
| 53 | if (!out_bytes) { |
| 54 | return -1; |
| 55 | } |
| 56 | |
| 57 | uint32_t binary_value = bit_cast<uint32_t>(value); |
| 58 | for (size_t i = 0; i < 4; ++i) { |
| 59 | out_bytes[i] = binary_value; |
| 60 | binary_value >>= 8; |
| 61 | } |
| 62 | |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | int ConvertDoubleToByteArray(double value, uint8_t out_bytes[8]) { |
| 67 | if (!out_bytes) { |
| 68 | return -1; |
| 69 | } |
| 70 | |
| 71 | uint64_t binary_value = bit_cast<uint64_t>(value); |
| 72 | for (size_t i = 0; i < 8; ++i) { |
| 73 | out_bytes[i] = binary_value; |
| 74 | binary_value >>= 8; |
| 75 | } |
| 76 | |
| 77 | return 0; |
| 78 | } |
| 79 | |
| 80 | size_t ReadInt16BufferFromFile(FileWrapper* file, |
| 81 | size_t length, |
| 82 | int16_t* buffer) { |
tommi | a6219cc | 2016-06-15 17:30:14 | [diff] [blame] | 83 | if (!file || !file->is_open() || !buffer || length <= 0) { |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 84 | return 0; |
| 85 | } |
| 86 | |
kwiberg | 85d8bb0 | 2016-02-17 04:39:36 | [diff] [blame] | 87 | std::unique_ptr<uint8_t[]> byte_array(new uint8_t[2]); |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 88 | |
| 89 | size_t int16s_read = 0; |
| 90 | |
| 91 | while (int16s_read < length) { |
| 92 | size_t bytes_read = file->Read(byte_array.get(), 2); |
| 93 | if (bytes_read < 2) { |
| 94 | break; |
| 95 | } |
| 96 | int16_t value = byte_array[1]; |
| 97 | value <<= 8; |
| 98 | value += byte_array[0]; |
| 99 | buffer[int16s_read] = value; |
| 100 | ++int16s_read; |
| 101 | } |
| 102 | |
| 103 | return int16s_read; |
| 104 | } |
| 105 | |
| 106 | size_t ReadInt16FromFileToFloatBuffer(FileWrapper* file, |
| 107 | size_t length, |
| 108 | float* buffer) { |
tommi | a6219cc | 2016-06-15 17:30:14 | [diff] [blame] | 109 | if (!file || !file->is_open() || !buffer || length <= 0) { |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 110 | return 0; |
| 111 | } |
| 112 | |
kwiberg | 85d8bb0 | 2016-02-17 04:39:36 | [diff] [blame] | 113 | std::unique_ptr<int16_t[]> buffer16(new int16_t[length]); |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 114 | |
| 115 | size_t int16s_read = ReadInt16BufferFromFile(file, length, buffer16.get()); |
| 116 | |
| 117 | for (size_t i = 0; i < int16s_read; ++i) { |
| 118 | buffer[i] = buffer16[i]; |
| 119 | } |
| 120 | |
| 121 | return int16s_read; |
| 122 | } |
| 123 | |
| 124 | size_t ReadInt16FromFileToDoubleBuffer(FileWrapper* file, |
| 125 | size_t length, |
| 126 | double* buffer) { |
tommi | a6219cc | 2016-06-15 17:30:14 | [diff] [blame] | 127 | if (!file || !file->is_open() || !buffer || length <= 0) { |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 128 | return 0; |
| 129 | } |
| 130 | |
kwiberg | 85d8bb0 | 2016-02-17 04:39:36 | [diff] [blame] | 131 | std::unique_ptr<int16_t[]> buffer16(new int16_t[length]); |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 132 | |
| 133 | size_t int16s_read = ReadInt16BufferFromFile(file, length, buffer16.get()); |
| 134 | |
| 135 | for (size_t i = 0; i < int16s_read; ++i) { |
| 136 | buffer[i] = buffer16[i]; |
| 137 | } |
| 138 | |
| 139 | return int16s_read; |
| 140 | } |
| 141 | |
| 142 | size_t ReadFloatBufferFromFile(FileWrapper* file, |
| 143 | size_t length, |
| 144 | float* buffer) { |
tommi | a6219cc | 2016-06-15 17:30:14 | [diff] [blame] | 145 | if (!file || !file->is_open() || !buffer || length <= 0) { |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 146 | return 0; |
| 147 | } |
| 148 | |
kwiberg | 85d8bb0 | 2016-02-17 04:39:36 | [diff] [blame] | 149 | std::unique_ptr<uint8_t[]> byte_array(new uint8_t[4]); |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 150 | |
| 151 | size_t floats_read = 0; |
| 152 | |
| 153 | while (floats_read < length) { |
| 154 | size_t bytes_read = file->Read(byte_array.get(), 4); |
| 155 | if (bytes_read < 4) { |
| 156 | break; |
| 157 | } |
| 158 | ConvertByteArrayToFloat(byte_array.get(), &buffer[floats_read]); |
| 159 | ++floats_read; |
| 160 | } |
| 161 | |
| 162 | return floats_read; |
| 163 | } |
| 164 | |
| 165 | size_t ReadDoubleBufferFromFile(FileWrapper* file, |
| 166 | size_t length, |
| 167 | double* buffer) { |
tommi | a6219cc | 2016-06-15 17:30:14 | [diff] [blame] | 168 | if (!file || !file->is_open() || !buffer || length <= 0) { |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 169 | return 0; |
| 170 | } |
| 171 | |
kwiberg | 85d8bb0 | 2016-02-17 04:39:36 | [diff] [blame] | 172 | std::unique_ptr<uint8_t[]> byte_array(new uint8_t[8]); |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 173 | |
| 174 | size_t doubles_read = 0; |
| 175 | |
| 176 | while (doubles_read < length) { |
| 177 | size_t bytes_read = file->Read(byte_array.get(), 8); |
| 178 | if (bytes_read < 8) { |
| 179 | break; |
| 180 | } |
| 181 | ConvertByteArrayToDouble(byte_array.get(), &buffer[doubles_read]); |
| 182 | ++doubles_read; |
| 183 | } |
| 184 | |
| 185 | return doubles_read; |
| 186 | } |
| 187 | |
| 188 | size_t WriteInt16BufferToFile(FileWrapper* file, |
| 189 | size_t length, |
| 190 | const int16_t* buffer) { |
tommi | a6219cc | 2016-06-15 17:30:14 | [diff] [blame] | 191 | if (!file || !file->is_open() || !buffer || length <= 0) { |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 192 | return 0; |
| 193 | } |
| 194 | |
kwiberg | 85d8bb0 | 2016-02-17 04:39:36 | [diff] [blame] | 195 | std::unique_ptr<uint8_t[]> byte_array(new uint8_t[2]); |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 196 | |
| 197 | size_t int16s_written = 0; |
| 198 | |
| 199 | for (int16s_written = 0; int16s_written < length; ++int16s_written) { |
| 200 | // Get byte representation. |
| 201 | byte_array[0] = buffer[int16s_written] & 0xFF; |
| 202 | byte_array[1] = (buffer[int16s_written] >> 8) & 0xFF; |
| 203 | |
| 204 | file->Write(byte_array.get(), 2); |
| 205 | } |
| 206 | |
| 207 | file->Flush(); |
| 208 | |
| 209 | return int16s_written; |
| 210 | } |
| 211 | |
| 212 | size_t WriteFloatBufferToFile(FileWrapper* file, |
| 213 | size_t length, |
| 214 | const float* buffer) { |
tommi | a6219cc | 2016-06-15 17:30:14 | [diff] [blame] | 215 | if (!file || !file->is_open() || !buffer || length <= 0) { |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 216 | return 0; |
| 217 | } |
| 218 | |
kwiberg | 85d8bb0 | 2016-02-17 04:39:36 | [diff] [blame] | 219 | std::unique_ptr<uint8_t[]> byte_array(new uint8_t[4]); |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 220 | |
| 221 | size_t floats_written = 0; |
| 222 | |
| 223 | for (floats_written = 0; floats_written < length; ++floats_written) { |
| 224 | // Get byte representation. |
| 225 | ConvertFloatToByteArray(buffer[floats_written], byte_array.get()); |
| 226 | |
| 227 | file->Write(byte_array.get(), 4); |
| 228 | } |
| 229 | |
| 230 | file->Flush(); |
| 231 | |
| 232 | return floats_written; |
| 233 | } |
| 234 | |
| 235 | size_t WriteDoubleBufferToFile(FileWrapper* file, |
| 236 | size_t length, |
| 237 | const double* buffer) { |
tommi | a6219cc | 2016-06-15 17:30:14 | [diff] [blame] | 238 | if (!file || !file->is_open() || !buffer || length <= 0) { |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 239 | return 0; |
| 240 | } |
| 241 | |
kwiberg | 85d8bb0 | 2016-02-17 04:39:36 | [diff] [blame] | 242 | std::unique_ptr<uint8_t[]> byte_array(new uint8_t[8]); |
pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 | [diff] [blame] | 243 | |
| 244 | size_t doubles_written = 0; |
| 245 | |
| 246 | for (doubles_written = 0; doubles_written < length; ++doubles_written) { |
| 247 | // Get byte representation. |
| 248 | ConvertDoubleToByteArray(buffer[doubles_written], byte_array.get()); |
| 249 | |
| 250 | file->Write(byte_array.get(), 8); |
| 251 | } |
| 252 | |
| 253 | file->Flush(); |
| 254 | |
| 255 | return doubles_written; |
| 256 | } |
| 257 | |
| 258 | } // namespace webrtc |