diff options
Diffstat (limited to 'xfa/src/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp')
| -rw-r--r-- | xfa/src/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp b/xfa/src/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp new file mode 100644 index 0000000000..e934d9313d --- /dev/null +++ b/xfa/src/fxbarcode/datamatrix/BC_DataMatrixDecodedBitStreamParser.cpp @@ -0,0 +1,472 @@ +// 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 "../barcode.h"
+#include "../common/BC_CommonDecoderResult.h"
+#include "../common/BC_CommonBitSource.h"
+#include "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 FX_INT32 CBC_DataMatrixDecodedBitStreamParser::PAD_ENCODE = 0;
+const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::ASCII_ENCODE = 1;
+const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::C40_ENCODE = 2;
+const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::TEXT_ENCODE = 3;
+const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::ANSIX12_ENCODE = 4;
+const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::EDIFACT_ENCODE = 5;
+const FX_INT32 CBC_DataMatrixDecodedBitStreamParser::BASE256_ENCODE = 6;
+CBC_DataMatrixDecodedBitStreamParser::CBC_DataMatrixDecodedBitStreamParser()
+{
+}
+CBC_DataMatrixDecodedBitStreamParser::~CBC_DataMatrixDecodedBitStreamParser()
+{
+}
+CBC_CommonDecoderResult *CBC_DataMatrixDecodedBitStreamParser::Decode(CFX_ByteArray &bytes, FX_INT32 &e)
+{
+ CBC_CommonBitSource bits(&bytes);
+ CFX_ByteString result;
+ CFX_ByteString resultTrailer;
+ CFX_Int32Array byteSegments;
+ FX_INT32 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:
+ NULL;
+ e = BCExceptionFormatException;
+ return NULL;
+ }
+ mode = ASCII_ENCODE;
+ }
+ } while (mode != PAD_ENCODE && bits.Available() > 0);
+ if (resultTrailer.GetLength() > 0) {
+ result += resultTrailer;
+ }
+ CBC_CommonDecoderResult *tempCp = FX_NEW CBC_CommonDecoderResult();
+ tempCp->Init(bytes, result, (byteSegments.GetSize() <= 0) ? CFX_Int32Array() : byteSegments, NULL, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return tempCp;
+}
+FX_INT32 CBC_DataMatrixDecodedBitStreamParser::DecodeAsciiSegment(CBC_CommonBitSource *bits, CFX_ByteString &result, CFX_ByteString &resultTrailer, FX_INT32 &e)
+{
+ FX_CHAR buffer[128];
+ FX_BOOL upperShift = FALSE;
+ do {
+ FX_INT32 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) {
+ FX_INT32 value = oneByte - 130;
+#if defined(_FX_WINAPI_PARTITION_APP_)
+ memset(buffer, 0, sizeof(FX_CHAR) * 128);
+ _itoa_s(value, buffer, 128, 10);
+#else
+ FXSYS_itoa(value, buffer, 10);
+#endif
+ 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, FX_INT32 &e)
+{
+ FX_BOOL upperShift = FALSE;
+ CFX_Int32Array cValues;
+ cValues.SetSize(3);
+ do {
+ if (bits->Available() == 8) {
+ return;
+ }
+ FX_INT32 firstByte = bits->ReadBits(8, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ if (firstByte == 254) {
+ return;
+ }
+ FX_INT32 tempp = bits->ReadBits(8, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ ParseTwoBytes(firstByte, tempp, cValues);
+ FX_INT32 shift = 0;
+ FX_INT32 i;
+ for (i = 0; i < 3; i++) {
+ FX_INT32 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, FX_INT32 &e)
+{
+ FX_BOOL upperShift = FALSE;
+ CFX_Int32Array cValues;
+ cValues.SetSize(3);
+ FX_INT32 shift = 0;
+ do {
+ if (bits->Available() == 8) {
+ return;
+ }
+ FX_INT32 firstByte = bits->ReadBits(8, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ if (firstByte == 254) {
+ return;
+ }
+ FX_INT32 inTp = bits->ReadBits(8, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ ParseTwoBytes(firstByte, inTp, cValues);
+ for (FX_INT32 i = 0; i < 3; i++) {
+ FX_INT32 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, FX_INT32 &e)
+{
+ CFX_Int32Array cValues;
+ cValues.SetSize(3);
+ do {
+ if (bits->Available() == 8) {
+ return;
+ }
+ FX_INT32 firstByte = bits->ReadBits(8, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ if (firstByte == 254) {
+ return;
+ }
+ FX_INT32 iTemp1 = bits->ReadBits(8, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ ParseTwoBytes(firstByte, iTemp1, cValues);
+ FX_INT32 i;
+ for (i = 0; i < 3; i++) {
+ FX_INT32 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(FX_INT32 firstByte, FX_INT32 secondByte, CFX_Int32Array &result)
+{
+ FX_INT32 fullBitValue = (firstByte << 8) + secondByte - 1;
+ FX_INT32 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, FX_INT32 &e)
+{
+ FX_CHAR buffer[128];
+ FX_BOOL unlatch = FALSE;
+ do {
+ if (bits->Available() <= 16) {
+ return;
+ }
+ FX_INT32 i;
+ for (i = 0; i < 4; i++) {
+ FX_INT32 edifactValue = bits->ReadBits(6, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ if (edifactValue == 0x1F) {
+ unlatch = TRUE;
+ }
+ if (!unlatch) {
+ if ((edifactValue & 32) == 0) {
+ edifactValue |= 64;
+ }
+#if defined(_FX_WINAPI_PARTITION_APP_)
+ memset(buffer, 0, sizeof(FX_CHAR) * 128);
+ _itoa_s(edifactValue, buffer, 128, 10);
+ result += buffer;
+#else
+ result += FXSYS_itoa(edifactValue, buffer, 10);
+#endif
+ }
+ }
+ } while (!unlatch && bits->Available() > 0);
+}
+void CBC_DataMatrixDecodedBitStreamParser::DecodeBase256Segment(CBC_CommonBitSource *bits, CFX_ByteString &result, CFX_Int32Array &byteSegments, FX_INT32 &e)
+{
+ FX_INT32 codewordPosition = 1 + bits->getByteOffset();
+ FX_INT32 iTmp = bits->ReadBits(8, e);
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ FX_INT32 d1 = Unrandomize255State(iTmp, codewordPosition++);
+ FX_INT32 count;
+ if (d1 == 0) {
+ count = bits->Available() / 8;
+ } else if (d1 < 250) {
+ count = d1;
+ } else {
+ FX_INT32 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 = FX_NEW CFX_ByteArray();
+ bytes->SetSize(count);
+ FX_INT32 i;
+ for (i = 0; i < count; i++) {
+ if (bits->Available() < 8) {
+ e = BCExceptionFormatException;
+ delete bytes;
+ return;
+ }
+ FX_INT32 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;
+}
+FX_BYTE CBC_DataMatrixDecodedBitStreamParser::Unrandomize255State(FX_INT32 randomizedBase256Codeword, FX_INT32 base256CodewordPosition)
+{
+ FX_INT32 pseudoRandomNumber = ((149 * base256CodewordPosition) % 255) + 1;
+ FX_INT32 tempVariable = randomizedBase256Codeword - pseudoRandomNumber;
+ return (FX_BYTE) (tempVariable >= 0 ? tempVariable : tempVariable + 256);
+}
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