diff options
Diffstat (limited to 'xfa/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp')
| -rw-r--r-- | xfa/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp | 473 |
1 files changed, 473 insertions, 0 deletions
diff --git a/xfa/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp b/xfa/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp new file mode 100644 index 0000000000..693b6b9209 --- /dev/null +++ b/xfa/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp @@ -0,0 +1,473 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com +// Original code is licensed as follows: +/* + * Copyright 2008 ZXing authors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "xfa/fxbarcode/common/BC_CommonBitSource.h" +#include "xfa/fxbarcode/common/BC_CommonDecoderResult.h" +#include "xfa/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.h" + +const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::C40_BASIC_SET_CHARS[] = { + '*', '*', '*', ' ', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', + 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', + 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'}; +const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::C40_SHIFT2_SET_CHARS[] = { + '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', + '/', ':', ';', '<', '=', '>', '?', '@', '[', '\\', ']', '^', '_'}; +const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::TEXT_BASIC_SET_CHARS[] = { + '*', '*', '*', ' ', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', + 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', + 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'}; +const FX_CHAR CBC_DataMatrixDecodedBitStreamParser::TEXT_SHIFT3_SET_CHARS[] = { + '\'', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', + 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', + 'V', 'W', 'X', 'Y', 'Z', '{', '|', '}', '~', (FX_CHAR)127}; +const int32_t CBC_DataMatrixDecodedBitStreamParser::PAD_ENCODE = 0; +const int32_t CBC_DataMatrixDecodedBitStreamParser::ASCII_ENCODE = 1; +const int32_t CBC_DataMatrixDecodedBitStreamParser::C40_ENCODE = 2; +const int32_t CBC_DataMatrixDecodedBitStreamParser::TEXT_ENCODE = 3; +const int32_t CBC_DataMatrixDecodedBitStreamParser::ANSIX12_ENCODE = 4; +const int32_t CBC_DataMatrixDecodedBitStreamParser::EDIFACT_ENCODE = 5; +const int32_t CBC_DataMatrixDecodedBitStreamParser::BASE256_ENCODE = 6; +CBC_DataMatrixDecodedBitStreamParser::CBC_DataMatrixDecodedBitStreamParser() {} +CBC_DataMatrixDecodedBitStreamParser::~CBC_DataMatrixDecodedBitStreamParser() {} +CBC_CommonDecoderResult* CBC_DataMatrixDecodedBitStreamParser::Decode( + CFX_ByteArray& bytes, + int32_t& e) { + CBC_CommonBitSource bits(&bytes); + CFX_ByteString result; + CFX_ByteString resultTrailer; + CFX_Int32Array byteSegments; + int32_t mode = ASCII_ENCODE; + do { + if (mode == 1) { + mode = DecodeAsciiSegment(&bits, result, resultTrailer, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else { + switch (mode) { + case 2: + DecodeC40Segment(&bits, result, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + break; + case 3: + DecodeTextSegment(&bits, result, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + break; + case 4: + DecodeAnsiX12Segment(&bits, result, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + break; + case 5: + DecodeEdifactSegment(&bits, result, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + break; + case 6: + DecodeBase256Segment(&bits, result, byteSegments, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + break; + default: + e = BCExceptionFormatException; + return NULL; + } + mode = ASCII_ENCODE; + } + } while (mode != PAD_ENCODE && bits.Available() > 0); + if (resultTrailer.GetLength() > 0) { + result += resultTrailer; + } + CBC_CommonDecoderResult* tempCp = new CBC_CommonDecoderResult(); + tempCp->Init(bytes, result, + (byteSegments.GetSize() <= 0) ? CFX_Int32Array() : byteSegments, + NULL, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return tempCp; +} +int32_t CBC_DataMatrixDecodedBitStreamParser::DecodeAsciiSegment( + CBC_CommonBitSource* bits, + CFX_ByteString& result, + CFX_ByteString& resultTrailer, + int32_t& e) { + FX_CHAR buffer[128]; + FX_BOOL upperShift = FALSE; + do { + int32_t oneByte = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + if (oneByte == 0) { + e = BCExceptionFormatException; + return 0; + } else if (oneByte <= 128) { + oneByte = upperShift ? oneByte + 128 : oneByte; + upperShift = FALSE; + result += ((FX_CHAR)(oneByte - 1)); + return ASCII_ENCODE; + } else if (oneByte == 129) { + return PAD_ENCODE; + } else if (oneByte <= 229) { + int32_t value = oneByte - 130; + FXSYS_itoa(value, buffer, 10); + if (value < 10) { + result += '0'; + buffer[1] = '\0'; + } else { + buffer[2] = '\0'; + } + result += buffer; + } else if (oneByte == 230) { + return C40_ENCODE; + } else if (oneByte == 231) { + return BASE256_ENCODE; + } else if (oneByte == 232 || oneByte == 233 || oneByte == 234) { + } else if (oneByte == 235) { + upperShift = TRUE; + } else if (oneByte == 236) { + result += "[)>"; + result += 0x1E; + result += "05"; + result += 0x1D; + resultTrailer.Insert(0, 0x1E); + resultTrailer.Insert(0 + 1, 0x04); + } else if (oneByte == 237) { + result += "[)>"; + result += 0x1E; + result += "06"; + result += 0x1D; + resultTrailer.Insert(0, 0x1E); + resultTrailer.Insert(0 + 1, 0x04); + } else if (oneByte == 238) { + return ANSIX12_ENCODE; + } else if (oneByte == 239) { + return TEXT_ENCODE; + } else if (oneByte == 240) { + return EDIFACT_ENCODE; + } else if (oneByte == 241) { + } else if (oneByte >= 242) { + if (oneByte == 254 && bits->Available() == 0) { + } else { + e = BCExceptionFormatException; + return 0; + } + } + } while (bits->Available() > 0); + return ASCII_ENCODE; +} +void CBC_DataMatrixDecodedBitStreamParser::DecodeC40Segment( + CBC_CommonBitSource* bits, + CFX_ByteString& result, + int32_t& e) { + FX_BOOL upperShift = FALSE; + CFX_Int32Array cValues; + cValues.SetSize(3); + do { + if (bits->Available() == 8) { + return; + } + int32_t firstByte = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if (firstByte == 254) { + return; + } + int32_t tempp = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + ParseTwoBytes(firstByte, tempp, cValues); + int32_t shift = 0; + int32_t i; + for (i = 0; i < 3; i++) { + int32_t cValue = cValues[i]; + switch (shift) { + case 0: + if (cValue < 3) { + shift = cValue + 1; + } else if (cValue < 27) { + FX_CHAR c40char = C40_BASIC_SET_CHARS[cValue]; + if (upperShift) { + result += (FX_CHAR)(c40char + 128); + upperShift = FALSE; + } else { + result += c40char; + } + } else { + e = BCExceptionFormatException; + return; + } + break; + case 1: + if (upperShift) { + result += (FX_CHAR)(cValue + 128); + upperShift = FALSE; + } else { + result += cValue; + } + shift = 0; + break; + case 2: + if (cValue < 27) { + FX_CHAR c40char = C40_SHIFT2_SET_CHARS[cValue]; + if (upperShift) { + result += (FX_CHAR)(c40char + 128); + upperShift = FALSE; + } else { + result += c40char; + } + } else if (cValue == 27) { + e = BCExceptionFormatException; + return; + } else if (cValue == 30) { + upperShift = TRUE; + } else { + e = BCExceptionFormatException; + return; + } + shift = 0; + break; + case 3: + if (upperShift) { + result += (FX_CHAR)(cValue + 224); + upperShift = FALSE; + } else { + result += (FX_CHAR)(cValue + 96); + } + shift = 0; + break; + default: + break; + e = BCExceptionFormatException; + return; + } + } + } while (bits->Available() > 0); +} +void CBC_DataMatrixDecodedBitStreamParser::DecodeTextSegment( + CBC_CommonBitSource* bits, + CFX_ByteString& result, + int32_t& e) { + FX_BOOL upperShift = FALSE; + CFX_Int32Array cValues; + cValues.SetSize(3); + int32_t shift = 0; + do { + if (bits->Available() == 8) { + return; + } + int32_t firstByte = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if (firstByte == 254) { + return; + } + int32_t inTp = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + ParseTwoBytes(firstByte, inTp, cValues); + for (int32_t i = 0; i < 3; i++) { + int32_t cValue = cValues[i]; + switch (shift) { + case 0: + if (cValue < 3) { + shift = cValue + 1; + } else if (cValue < 40) { + FX_CHAR textChar = TEXT_BASIC_SET_CHARS[cValue]; + if (upperShift) { + result += (FX_CHAR)(textChar + 128); + upperShift = FALSE; + } else { + result += textChar; + } + } else { + e = BCExceptionFormatException; + return; + } + break; + case 1: + if (upperShift) { + result += (FX_CHAR)(cValue + 128); + upperShift = FALSE; + } else { + result += cValue; + } + shift = 0; + break; + case 2: + if (cValue < 27) { + FX_CHAR c40char = C40_SHIFT2_SET_CHARS[cValue]; + if (upperShift) { + result += (FX_CHAR)(c40char + 128); + upperShift = FALSE; + } else { + result += c40char; + } + } else if (cValue == 27) { + e = BCExceptionFormatException; + return; + } else if (cValue == 30) { + upperShift = TRUE; + } else { + e = BCExceptionFormatException; + return; + } + shift = 0; + break; + case 3: + if (cValue < 19) { + FX_CHAR textChar = TEXT_SHIFT3_SET_CHARS[cValue]; + if (upperShift) { + result += (FX_CHAR)(textChar + 128); + upperShift = FALSE; + } else { + result += textChar; + } + shift = 0; + } else { + e = BCExceptionFormatException; + return; + } + break; + default: + break; + e = BCExceptionFormatException; + return; + } + } + } while (bits->Available() > 0); +} +void CBC_DataMatrixDecodedBitStreamParser::DecodeAnsiX12Segment( + CBC_CommonBitSource* bits, + CFX_ByteString& result, + int32_t& e) { + CFX_Int32Array cValues; + cValues.SetSize(3); + do { + if (bits->Available() == 8) { + return; + } + int32_t firstByte = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if (firstByte == 254) { + return; + } + int32_t iTemp1 = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + ParseTwoBytes(firstByte, iTemp1, cValues); + int32_t i; + for (i = 0; i < 3; i++) { + int32_t cValue = cValues[i]; + if (cValue == 0) { + BC_FX_ByteString_Append(result, 1, '\r'); + } else if (cValue == 1) { + BC_FX_ByteString_Append(result, 1, '*'); + } else if (cValue == 2) { + BC_FX_ByteString_Append(result, 1, '>'); + } else if (cValue == 3) { + BC_FX_ByteString_Append(result, 1, ' '); + } else if (cValue < 14) { + BC_FX_ByteString_Append(result, 1, (FX_CHAR)(cValue + 44)); + } else if (cValue < 40) { + BC_FX_ByteString_Append(result, 1, (FX_CHAR)(cValue + 51)); + } else { + e = BCExceptionFormatException; + return; + } + } + } while (bits->Available() > 0); +} +void CBC_DataMatrixDecodedBitStreamParser::ParseTwoBytes( + int32_t firstByte, + int32_t secondByte, + CFX_Int32Array& result) { + int32_t fullBitValue = (firstByte << 8) + secondByte - 1; + int32_t temp = fullBitValue / 1600; + result[0] = temp; + fullBitValue -= temp * 1600; + temp = fullBitValue / 40; + result[1] = temp; + result[2] = fullBitValue - temp * 40; +} + +void CBC_DataMatrixDecodedBitStreamParser::DecodeEdifactSegment( + CBC_CommonBitSource* bits, + CFX_ByteString& result, + int32_t& e) { + FX_CHAR buffer[128]; + FX_BOOL unlatch = FALSE; + do { + if (bits->Available() <= 16) + return; + + for (int32_t i = 0; i < 4; i++) { + int32_t edifactValue = bits->ReadBits(6, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if (edifactValue == 0x1F) + unlatch = TRUE; + + if (!unlatch) { + if ((edifactValue & 32) == 0) + edifactValue |= 64; + result += FXSYS_itoa(edifactValue, buffer, 10); + } + } + } while (!unlatch && bits->Available() > 0); +} + +void CBC_DataMatrixDecodedBitStreamParser::DecodeBase256Segment( + CBC_CommonBitSource* bits, + CFX_ByteString& result, + CFX_Int32Array& byteSegments, + int32_t& e) { + int32_t codewordPosition = 1 + bits->getByteOffset(); + int32_t iTmp = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + int32_t d1 = Unrandomize255State(iTmp, codewordPosition++); + int32_t count; + if (d1 == 0) { + count = bits->Available() / 8; + } else if (d1 < 250) { + count = d1; + } else { + int32_t iTmp3 = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + count = 250 * (d1 - 249) + Unrandomize255State(iTmp3, codewordPosition++); + } + if (count < 0) { + e = BCExceptionFormatException; + return; + } + CFX_ByteArray* bytes = new CFX_ByteArray(); + bytes->SetSize(count); + int32_t i; + for (i = 0; i < count; i++) { + if (bits->Available() < 8) { + e = BCExceptionFormatException; + delete bytes; + return; + } + int32_t iTemp5 = bits->ReadBits(8, e); + if (e != BCExceptionNO) { + delete bytes; + return; + } + bytes->SetAt(i, Unrandomize255State(iTemp5, codewordPosition++)); + } + BC_FX_ByteString_Append(result, *bytes); + delete bytes; +} +uint8_t CBC_DataMatrixDecodedBitStreamParser::Unrandomize255State( + int32_t randomizedBase256Codeword, + int32_t base256CodewordPosition) { + int32_t pseudoRandomNumber = ((149 * base256CodewordPosition) % 255) + 1; + int32_t tempVariable = randomizedBase256Codeword - pseudoRandomNumber; + return (uint8_t)(tempVariable >= 0 ? tempVariable : tempVariable + 256); +} |