// 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); | |
} |