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| 1 // Copyright 2014 PDFium 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 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
| 6 // Original code is licensed as follows: | |
| 7 /* | |
| 8 * Copyright 2008 ZXing authors | |
| 9 * | |
| 10 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 11 * you may not use this file except in compliance with the License. | |
| 12 * You may obtain a copy of the License at | |
| 13 * | |
| 14 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 15 * | |
| 16 * Unless required by applicable law or agreed to in writing, software | |
| 17 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 19 * See the License for the specific language governing permissions and | |
| 20 * limitations under the License. | |
| 21 */ | |
| 22 | |
| 23 #include "barcode.h" | |
| 24 #include "include/BC_DataMatrixDecodedBitStreamParser.h" | |
| 25 #include "include/BC_CommonDecoderResult.h" | |
| 26 #include "include/BC_CommonBitSource.h" | |
| 27 const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::C40_BASIC_SET_CHARS[] = { | |
| 28 '*', '*', '*', ' ', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', | |
| 29 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', | |
| 30 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' | |
| 31 }; | |
| 32 const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::C40_SHIFT2_SET_CHARS[] = { | |
| 33 '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', | |
| 34 '/', ':', ';', '<', '=', '>', '?', '@', '[', '\\', ']', '^', '_' | |
| 35 }; | |
| 36 const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::TEXT_BASIC_SET_CHARS[] = { | |
| 37 '*', '*', '*', ' ', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', | |
| 38 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', | |
| 39 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' | |
| 40 }; | |
| 41 const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::TEXT_SHIFT3_SET_CHARS[] = { | |
| 42 '\'', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', | |
| 43 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '{', '|', '}',
'~', (FX_CHAR) 127 | |
| 44 }; | |
| 45 const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::PAD_ENCODE = 0; | |
| 46 const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::ASCII_ENCODE = 1; | |
| 47 const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::C40_ENCODE = 2; | |
| 48 const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::TEXT_ENCODE = 3; | |
| 49 const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::ANSIX12_ENCODE = 4; | |
| 50 const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::EDIFACT_ENCODE = 5; | |
| 51 const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::BASE256_ENCODE = 6; | |
| 52 CBC_DataMatrixDecodedBitStreamParser::CBC_DataMatrixDecodedBitStreamParser() | |
| 53 { | |
| 54 } | |
| 55 CBC_DataMatrixDecodedBitStreamParser::~CBC_DataMatrixDecodedBitStreamParser() | |
| 56 { | |
| 57 } | |
| 58 CBC_CommonDecoderResult *CBC_DataMatrixDecodedBitStreamParser::Decode(CFX_ByteAr
ray &bytes, FX_INT32 &e) | |
| 59 { | |
| 60 CBC_CommonBitSource bits(&bytes); | |
| 61 CFX_ByteString result; | |
| 62 CFX_ByteString resultTrailer; | |
| 63 CFX_Int32Array byteSegments; | |
| 64 FX_INT32 mode = ASCII_ENCODE; | |
| 65 do { | |
| 66 if (mode == 1) { | |
| 67 mode = DecodeAsciiSegment(&bits, result, resultTrailer, e); | |
| 68 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 69 } else { | |
| 70 switch (mode) { | |
| 71 case 2: | |
| 72 DecodeC40Segment(&bits, result, e); | |
| 73 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 74 break; | |
| 75 case 3: | |
| 76 DecodeTextSegment(&bits, result, e); | |
| 77 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 78 break; | |
| 79 case 4: | |
| 80 DecodeAnsiX12Segment(&bits, result, e); | |
| 81 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 82 break; | |
| 83 case 5: | |
| 84 DecodeEdifactSegment(&bits, result, e); | |
| 85 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 86 break; | |
| 87 case 6: | |
| 88 DecodeBase256Segment(&bits, result, byteSegments, e); | |
| 89 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 90 break; | |
| 91 default: | |
| 92 NULL; | |
| 93 e = BCExceptionFormatException; | |
| 94 return NULL; | |
| 95 } | |
| 96 mode = ASCII_ENCODE; | |
| 97 } | |
| 98 } while (mode != PAD_ENCODE && bits.Available() > 0); | |
| 99 if (resultTrailer.GetLength() > 0) { | |
| 100 result += resultTrailer; | |
| 101 } | |
| 102 CBC_CommonDecoderResult *tempCp = FX_NEW CBC_CommonDecoderResult(); | |
| 103 tempCp->Init(bytes, result, (byteSegments.GetSize() <= 0) ? CFX_Int32Array()
: byteSegments, NULL, e); | |
| 104 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 105 return tempCp; | |
| 106 } | |
| 107 FX_INT32 CBC_DataMatrixDecodedBitStreamParser::DecodeAsciiSegment(CBC_CommonBitS
ource *bits, CFX_ByteString &result, CFX_ByteString &resultTrailer, FX_INT32 &e) | |
| 108 { | |
| 109 FX_CHAR buffer[128]; | |
| 110 FX_BOOL upperShift = FALSE; | |
| 111 do { | |
| 112 FX_INT32 oneByte = bits->ReadBits(8, e); | |
| 113 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
| 114 if (oneByte == 0) { | |
| 115 e = BCExceptionFormatException; | |
| 116 return 0; | |
| 117 } else if (oneByte <= 128) { | |
| 118 oneByte = upperShift ? oneByte + 128 : oneByte; | |
| 119 upperShift = FALSE; | |
| 120 result += ((FX_CHAR) (oneByte - 1)); | |
| 121 return ASCII_ENCODE; | |
| 122 } else if (oneByte == 129) { | |
| 123 return PAD_ENCODE; | |
| 124 } else if (oneByte <= 229) { | |
| 125 FX_INT32 value = oneByte - 130; | |
| 126 #if defined(_FX_WINAPI_PARTITION_APP_) | |
| 127 memset(buffer, 0, sizeof(FX_CHAR) * 128); | |
| 128 _itoa_s(value, buffer, 128, 10); | |
| 129 #else | |
| 130 FXSYS_itoa(value, buffer, 10); | |
| 131 #endif | |
| 132 if (value < 10) { | |
| 133 result += '0'; | |
| 134 buffer[1] = '\0'; | |
| 135 } else { | |
| 136 buffer[2] = '\0'; | |
| 137 } | |
| 138 result += buffer; | |
| 139 } else if (oneByte == 230) { | |
| 140 return C40_ENCODE; | |
| 141 } else if (oneByte == 231) { | |
| 142 return BASE256_ENCODE; | |
| 143 } else if (oneByte == 232 || oneByte == 233 || oneByte == 234) { | |
| 144 } else if (oneByte == 235) { | |
| 145 upperShift = TRUE; | |
| 146 } else if (oneByte == 236) { | |
| 147 result += "[)>"; | |
| 148 result += 0x1E; | |
| 149 result += "05"; | |
| 150 result += 0x1D; | |
| 151 resultTrailer.Insert(0, 0x1E); | |
| 152 resultTrailer.Insert(0 + 1, 0x04); | |
| 153 } else if (oneByte == 237) { | |
| 154 result += "[)>"; | |
| 155 result += 0x1E; | |
| 156 result += "06"; | |
| 157 result += 0x1D; | |
| 158 resultTrailer.Insert(0, 0x1E); | |
| 159 resultTrailer.Insert(0 + 1, 0x04); | |
| 160 } else if (oneByte == 238) { | |
| 161 return ANSIX12_ENCODE; | |
| 162 } else if (oneByte == 239) { | |
| 163 return TEXT_ENCODE; | |
| 164 } else if (oneByte == 240) { | |
| 165 return EDIFACT_ENCODE; | |
| 166 } else if (oneByte == 241) { | |
| 167 } else if (oneByte >= 242) { | |
| 168 if (oneByte == 254 && bits->Available() == 0) { | |
| 169 } else { | |
| 170 e = BCExceptionFormatException; | |
| 171 return 0; | |
| 172 } | |
| 173 } | |
| 174 } while (bits->Available() > 0); | |
| 175 return ASCII_ENCODE; | |
| 176 } | |
| 177 void CBC_DataMatrixDecodedBitStreamParser::DecodeC40Segment(CBC_CommonBitSource
*bits, CFX_ByteString &result, FX_INT32 &e) | |
| 178 { | |
| 179 FX_BOOL upperShift = FALSE; | |
| 180 CFX_Int32Array cValues; | |
| 181 cValues.SetSize(3); | |
| 182 do { | |
| 183 if (bits->Available() == 8) { | |
| 184 return; | |
| 185 } | |
| 186 FX_INT32 firstByte = bits->ReadBits(8, e); | |
| 187 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 188 if (firstByte == 254) { | |
| 189 return; | |
| 190 } | |
| 191 FX_INT32 tempp = bits->ReadBits(8, e); | |
| 192 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 193 ParseTwoBytes(firstByte, tempp, cValues); | |
| 194 FX_INT32 shift = 0; | |
| 195 FX_INT32 i; | |
| 196 for (i = 0; i < 3; i++) { | |
| 197 FX_INT32 cValue = cValues[i]; | |
| 198 switch (shift) { | |
| 199 case 0: | |
| 200 if (cValue < 3) { | |
| 201 shift = cValue + 1; | |
| 202 } else if (cValue < 27) { | |
| 203 FX_CHAR c40char = C40_BASIC_SET_CHARS[cValue]; | |
| 204 if (upperShift) { | |
| 205 result += (FX_CHAR) (c40char + 128); | |
| 206 upperShift = FALSE; | |
| 207 } else { | |
| 208 result += c40char; | |
| 209 } | |
| 210 } else { | |
| 211 e = BCExceptionFormatException; | |
| 212 return ; | |
| 213 } | |
| 214 break; | |
| 215 case 1: | |
| 216 if (upperShift) { | |
| 217 result += (FX_CHAR) (cValue + 128); | |
| 218 upperShift = FALSE; | |
| 219 } else { | |
| 220 result += cValue; | |
| 221 } | |
| 222 shift = 0; | |
| 223 break; | |
| 224 case 2: | |
| 225 if (cValue < 27) { | |
| 226 FX_CHAR c40char = C40_SHIFT2_SET_CHARS[cValue]; | |
| 227 if (upperShift) { | |
| 228 result += (FX_CHAR) (c40char + 128); | |
| 229 upperShift = FALSE; | |
| 230 } else { | |
| 231 result += c40char; | |
| 232 } | |
| 233 } else if (cValue == 27) { | |
| 234 e = BCExceptionFormatException; | |
| 235 return; | |
| 236 } else if (cValue == 30) { | |
| 237 upperShift = TRUE; | |
| 238 } else { | |
| 239 e = BCExceptionFormatException; | |
| 240 return; | |
| 241 } | |
| 242 shift = 0; | |
| 243 break; | |
| 244 case 3: | |
| 245 if (upperShift) { | |
| 246 result += (FX_CHAR) (cValue + 224); | |
| 247 upperShift = FALSE; | |
| 248 } else { | |
| 249 result += (FX_CHAR) (cValue + 96); | |
| 250 } | |
| 251 shift = 0; | |
| 252 break; | |
| 253 default: | |
| 254 break; | |
| 255 e = BCExceptionFormatException; | |
| 256 return; | |
| 257 } | |
| 258 } | |
| 259 } while (bits->Available() > 0); | |
| 260 } | |
| 261 void CBC_DataMatrixDecodedBitStreamParser::DecodeTextSegment(CBC_CommonBitSource
*bits, CFX_ByteString &result, FX_INT32 &e) | |
| 262 { | |
| 263 FX_BOOL upperShift = FALSE; | |
| 264 CFX_Int32Array cValues; | |
| 265 cValues.SetSize(3); | |
| 266 FX_INT32 shift = 0; | |
| 267 do { | |
| 268 if (bits->Available() == 8) { | |
| 269 return; | |
| 270 } | |
| 271 FX_INT32 firstByte = bits->ReadBits(8, e); | |
| 272 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 273 if (firstByte == 254) { | |
| 274 return; | |
| 275 } | |
| 276 FX_INT32 inTp = bits->ReadBits(8, e); | |
| 277 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 278 ParseTwoBytes(firstByte, inTp, cValues); | |
| 279 for (FX_INT32 i = 0; i < 3; i++) { | |
| 280 FX_INT32 cValue = cValues[i]; | |
| 281 switch (shift) { | |
| 282 case 0: | |
| 283 if (cValue < 3) { | |
| 284 shift = cValue + 1; | |
| 285 } else if (cValue < 40) { | |
| 286 FX_CHAR textChar = TEXT_BASIC_SET_CHARS[cValue]; | |
| 287 if (upperShift) { | |
| 288 result += (FX_CHAR) (textChar + 128); | |
| 289 upperShift = FALSE; | |
| 290 } else { | |
| 291 result += textChar; | |
| 292 } | |
| 293 } else { | |
| 294 e = BCExceptionFormatException; | |
| 295 return; | |
| 296 } | |
| 297 break; | |
| 298 case 1: | |
| 299 if (upperShift) { | |
| 300 result += (FX_CHAR) (cValue + 128); | |
| 301 upperShift = FALSE; | |
| 302 } else { | |
| 303 result += cValue; | |
| 304 } | |
| 305 shift = 0; | |
| 306 break; | |
| 307 case 2: | |
| 308 if (cValue < 27) { | |
| 309 FX_CHAR c40char = C40_SHIFT2_SET_CHARS[cValue]; | |
| 310 if (upperShift) { | |
| 311 result += (FX_CHAR) (c40char + 128); | |
| 312 upperShift = FALSE; | |
| 313 } else { | |
| 314 result += c40char; | |
| 315 } | |
| 316 } else if (cValue == 27) { | |
| 317 e = BCExceptionFormatException; | |
| 318 return; | |
| 319 } else if (cValue == 30) { | |
| 320 upperShift = TRUE; | |
| 321 } else { | |
| 322 e = BCExceptionFormatException; | |
| 323 return; | |
| 324 } | |
| 325 shift = 0; | |
| 326 break; | |
| 327 case 3: | |
| 328 if (cValue < 19) { | |
| 329 FX_CHAR textChar = TEXT_SHIFT3_SET_CHARS[cValue]; | |
| 330 if (upperShift) { | |
| 331 result += (FX_CHAR) (textChar + 128); | |
| 332 upperShift = FALSE; | |
| 333 } else { | |
| 334 result += textChar; | |
| 335 } | |
| 336 shift = 0; | |
| 337 } else { | |
| 338 e = BCExceptionFormatException; | |
| 339 return; | |
| 340 } | |
| 341 break; | |
| 342 default: | |
| 343 break; | |
| 344 e = BCExceptionFormatException; | |
| 345 return; | |
| 346 } | |
| 347 } | |
| 348 } while (bits->Available() > 0); | |
| 349 } | |
| 350 void CBC_DataMatrixDecodedBitStreamParser::DecodeAnsiX12Segment(CBC_CommonBitSou
rce *bits, CFX_ByteString &result, FX_INT32 &e) | |
| 351 { | |
| 352 CFX_Int32Array cValues; | |
| 353 cValues.SetSize(3); | |
| 354 do { | |
| 355 if (bits->Available() == 8) { | |
| 356 return; | |
| 357 } | |
| 358 FX_INT32 firstByte = bits->ReadBits(8, e); | |
| 359 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 360 if (firstByte == 254) { | |
| 361 return; | |
| 362 } | |
| 363 FX_INT32 iTemp1 = bits->ReadBits(8, e); | |
| 364 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 365 ParseTwoBytes(firstByte, iTemp1, cValues); | |
| 366 FX_INT32 i; | |
| 367 for (i = 0; i < 3; i++) { | |
| 368 FX_INT32 cValue = cValues[i]; | |
| 369 if (cValue == 0) { | |
| 370 BC_FX_ByteString_Append(result, 1, '\r'); | |
| 371 } else if (cValue == 1) { | |
| 372 BC_FX_ByteString_Append(result, 1, '*'); | |
| 373 } else if (cValue == 2) { | |
| 374 BC_FX_ByteString_Append(result, 1, '>'); | |
| 375 } else if (cValue == 3) { | |
| 376 BC_FX_ByteString_Append(result, 1, ' '); | |
| 377 } else if (cValue < 14) { | |
| 378 BC_FX_ByteString_Append(result, 1, (FX_CHAR) (cValue + 44)); | |
| 379 } else if (cValue < 40) { | |
| 380 BC_FX_ByteString_Append(result, 1, (FX_CHAR) (cValue + 51)); | |
| 381 } else { | |
| 382 e = BCExceptionFormatException; | |
| 383 return; | |
| 384 } | |
| 385 } | |
| 386 } while (bits->Available() > 0); | |
| 387 } | |
| 388 void CBC_DataMatrixDecodedBitStreamParser::ParseTwoBytes(FX_INT32 firstByte, FX_
INT32 secondByte, CFX_Int32Array &result) | |
| 389 { | |
| 390 FX_INT32 fullBitValue = (firstByte << 8) + secondByte - 1; | |
| 391 FX_INT32 temp = fullBitValue / 1600; | |
| 392 result[0] = temp; | |
| 393 fullBitValue -= temp * 1600; | |
| 394 temp = fullBitValue / 40; | |
| 395 result[1] = temp; | |
| 396 result[2] = fullBitValue - temp * 40; | |
| 397 } | |
| 398 void CBC_DataMatrixDecodedBitStreamParser::DecodeEdifactSegment(CBC_CommonBitSou
rce *bits, CFX_ByteString &result, FX_INT32 &e) | |
| 399 { | |
| 400 FX_CHAR buffer[128]; | |
| 401 FX_BOOL unlatch = FALSE; | |
| 402 do { | |
| 403 if (bits->Available() <= 16) { | |
| 404 return; | |
| 405 } | |
| 406 FX_INT32 i; | |
| 407 for (i = 0; i < 4; i++) { | |
| 408 FX_INT32 edifactValue = bits->ReadBits(6, e); | |
| 409 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 410 if (edifactValue == 0x1F) { | |
| 411 unlatch = TRUE; | |
| 412 } | |
| 413 if (!unlatch) { | |
| 414 if ((edifactValue & 32) == 0) { | |
| 415 edifactValue |= 64; | |
| 416 } | |
| 417 #if defined(_FX_WINAPI_PARTITION_APP_) | |
| 418 memset(buffer, 0, sizeof(FX_CHAR) * 128); | |
| 419 _itoa_s(edifactValue, buffer, 128, 10); | |
| 420 result += buffer; | |
| 421 #else | |
| 422 result += FXSYS_itoa(edifactValue, buffer, 10); | |
| 423 #endif | |
| 424 } | |
| 425 } | |
| 426 } while (!unlatch && bits->Available() > 0); | |
| 427 } | |
| 428 void CBC_DataMatrixDecodedBitStreamParser::DecodeBase256Segment(CBC_CommonBitSou
rce *bits, CFX_ByteString &result, CFX_Int32Array &byteSegments, FX_INT32 &e) | |
| 429 { | |
| 430 FX_INT32 codewordPosition = 1 + bits->getByteOffset(); | |
| 431 FX_INT32 iTmp = bits->ReadBits(8, e); | |
| 432 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 433 FX_INT32 d1 = Unrandomize255State(iTmp, codewordPosition++); | |
| 434 FX_INT32 count; | |
| 435 if (d1 == 0) { | |
| 436 count = bits->Available() / 8; | |
| 437 } else if (d1 < 250) { | |
| 438 count = d1; | |
| 439 } else { | |
| 440 FX_INT32 iTmp3 = bits->ReadBits(8, e); | |
| 441 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 442 count = 250 * (d1 - 249) + Unrandomize255State(iTmp3, codewordPosition++
); | |
| 443 } | |
| 444 if (count < 0) { | |
| 445 e = BCExceptionFormatException; | |
| 446 return; | |
| 447 } | |
| 448 CFX_ByteArray *bytes = FX_NEW CFX_ByteArray(); | |
| 449 bytes->SetSize(count); | |
| 450 FX_INT32 i; | |
| 451 for (i = 0; i < count; i++) { | |
| 452 if (bits->Available() < 8) { | |
| 453 e = BCExceptionFormatException; | |
| 454 delete bytes; | |
| 455 return; | |
| 456 } | |
| 457 FX_INT32 iTemp5 = bits->ReadBits(8, e); | |
| 458 if (e != BCExceptionNO) { | |
| 459 delete bytes; | |
| 460 return; | |
| 461 } | |
| 462 bytes->SetAt(i, Unrandomize255State(iTemp5, codewordPosition++)); | |
| 463 } | |
| 464 BC_FX_ByteString_Append(result, *bytes); | |
| 465 delete bytes; | |
| 466 } | |
| 467 FX_BYTE CBC_DataMatrixDecodedBitStreamParser::Unrandomize255State(FX_INT32 rando
mizedBase256Codeword, FX_INT32 base256CodewordPosition) | |
| 468 { | |
| 469 FX_INT32 pseudoRandomNumber = ((149 * base256CodewordPosition) % 255) + 1; | |
| 470 FX_INT32 tempVariable = randomizedBase256Codeword - pseudoRandomNumber; | |
| 471 return (FX_BYTE) (tempVariable >= 0 ? tempVariable : tempVariable + 256); | |
| 472 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 842043002:
Organize barcode codes into modules. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@xfa