From a902979f7c6a39fbdd8e9fc1b2ce00553b655eeb Mon Sep 17 00:00:00 2001 From: Bo Xu Date: Fri, 9 Jan 2015 17:27:21 -0800 Subject: Organize barcode codes into modules. Previously all the files in barcode are lumped together. The naming of some files are inconsistent, leading to difficult understanding of the structure. Now files are grouped based on different barcode type like in zxing. This also matches what it looks like in other xfa folders. The file names in each folder could be further modified to be consistent. R=tsepez@chromium.org Review URL: https://codereview.chromium.org/842043002 --- .../qrcode/BC_QRDecodedBitStreamParser.cpp | 254 +++++++++++++++++++++ 1 file changed, 254 insertions(+) create mode 100644 xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp (limited to 'xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp') diff --git a/xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp b/xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp new file mode 100644 index 0000000000..0fe4d1b2b6 --- /dev/null +++ b/xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp @@ -0,0 +1,254 @@ +// 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 2007 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 "../BC_UtilCodingConvert.h" +#include "../common/BC_CommonBitSource.h" +#include "../common/BC_CommonECI.h" +#include "../common/BC_CommonCharacterSetECI.h" +#include "../common/BC_CommonDecoderResult.h" +#include "BC_QRCoderMode.h" +#include "BC_QRDecodedBitStreamParser.h" +FX_LPCSTR CBC_QRDecodedBitStreamParser::UTF_8 = "utf8"; +const FX_CHAR CBC_QRDecodedBitStreamParser::ALPHANUMERIC_CHARS[45] = { + '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', + ' ', '$', '%', '*', '+', '-', '.', '/', ':' +}; +CBC_QRDecodedBitStreamParser::CBC_QRDecodedBitStreamParser() +{ +} +CBC_QRDecodedBitStreamParser::~CBC_QRDecodedBitStreamParser() +{ +} +CBC_CommonDecoderResult* CBC_QRDecodedBitStreamParser::Decode(CFX_ByteArray *bytes, CBC_QRCoderVersion *version, + CBC_QRCoderErrorCorrectionLevel* ecLevel, FX_INT32 byteModeDecode, FX_INT32 &e) +{ + CBC_CommonBitSource bits(bytes); + CFX_ByteString result; + CBC_CommonCharacterSetECI* currentCharacterSetECI = NULL; + FX_BOOL fc1Infact = FALSE; + CFX_Int32Array byteSegments; + CBC_QRCoderMode* mode = NULL; + do { + if(bits.Available() < 4) { + mode = CBC_QRCoderMode::sTERMINATOR; + } else { + FX_INT32 iTemp1 = bits.ReadBits(4, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + mode = CBC_QRCoderMode::ForBits(iTemp1, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + if(mode == NULL) { + e = BCExceptionUnSupportMode; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + } + if(!(mode == CBC_QRCoderMode::sTERMINATOR)) { + if(mode == CBC_QRCoderMode::sFNC1_FIRST_POSITION || mode == CBC_QRCoderMode::sFNC1_SECOND_POSITION) { + fc1Infact = TRUE; + } else if(mode == CBC_QRCoderMode::sSTRUCTURED_APPEND) { + bits.ReadBits(16, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if(mode == CBC_QRCoderMode::sECI) { + FX_INT32 value = ParseECIValue(&bits, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + currentCharacterSetECI = CBC_CommonCharacterSetECI::GetCharacterSetECIByValue(value); + } else { + if(mode == CBC_QRCoderMode::sGBK) { + bits.ReadBits(4, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + FX_INT32 numBits = mode->GetCharacterCountBits(version, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + FX_INT32 count = bits.ReadBits(numBits, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + if(mode == CBC_QRCoderMode::sNUMERIC) { + DecodeNumericSegment(&bits, result, count, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if(mode == CBC_QRCoderMode::sALPHANUMERIC) { + DecodeAlphanumericSegment(&bits, result, count, fc1Infact, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if(mode == CBC_QRCoderMode::sBYTE) { + DecodeByteSegment(&bits, result, count, currentCharacterSetECI, &byteSegments, byteModeDecode, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if(mode == CBC_QRCoderMode::sGBK) { + DecodeGBKSegment(&bits, result, count, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if(mode == CBC_QRCoderMode::sKANJI) { + DecodeKanjiSegment(&bits, result, count, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else { + e = BCExceptionUnSupportMode; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + } + } + } while (!(mode == CBC_QRCoderMode::sTERMINATOR)); + CBC_CommonDecoderResult *tempCd = FX_NEW CBC_CommonDecoderResult(); + tempCd->Init(*bytes, result, byteSegments, ecLevel, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return tempCd; +} +void CBC_QRDecodedBitStreamParser::DecodeGBKSegment(CBC_CommonBitSource* bits, CFX_ByteString &result, FX_INT32 count, FX_INT32 &e) +{ + CFX_ByteString buffer; + FX_INT32 offset = 0; + while (count > 0) { + FX_INT32 twoBytes = bits->ReadBits(13, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + FX_INT32 assembledTwoBytes = ((twoBytes / 0x060) << 8) | (twoBytes % 0x060); + if (assembledTwoBytes <= 0x0095d) { + assembledTwoBytes += 0x0a1a1; + } else { + assembledTwoBytes += 0x0a6a1; + } + buffer += (FX_BYTE) (assembledTwoBytes >> 8); + buffer += (FX_BYTE) assembledTwoBytes; + count--; + } + CBC_UtilCodingConvert::LocaleToUtf8(buffer, result); +} +void CBC_QRDecodedBitStreamParser::DecodeKanjiSegment(CBC_CommonBitSource* bits, CFX_ByteString &result, FX_INT32 count, FX_INT32 &e) +{ + CFX_ByteString buffer; + while (count > 0) { + FX_INT32 twoBytes = bits->ReadBits(13, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + FX_INT32 assembledTwoBytes = ((twoBytes / 0x0c0) << 8) | (twoBytes % 0x0c0); + if (assembledTwoBytes <= 0x01f00) { + assembledTwoBytes += 0x08140; + } else { + assembledTwoBytes += 0x0c140; + } + buffer += (FX_BYTE) (assembledTwoBytes >> 8); + buffer += (FX_BYTE) assembledTwoBytes; + count--; + } + CBC_UtilCodingConvert::LocaleToUtf8(buffer, result); +} +void CBC_QRDecodedBitStreamParser::DecodeByteSegment(CBC_CommonBitSource* bits, CFX_ByteString &result, FX_INT32 count, + CBC_CommonCharacterSetECI *currentCharacterSetECI, + CFX_Int32Array *byteSegments, FX_INT32 byteModeDecode, FX_INT32 &e) +{ + if(count < 0) { + e = BCExceptionNotFound; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + if((count << 3) > bits->Available()) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + FX_BYTE *readBytes = FX_Alloc(FX_BYTE, count); + FXSYS_memset32(readBytes, 0x00, count); + for(FX_INT32 i = 0; i < count; i++) { + readBytes[i] = (FX_BYTE) bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + CFX_ByteString bs(readBytes, count); + result += bs; + FX_Free(readBytes); +} +void CBC_QRDecodedBitStreamParser::DecodeAlphanumericSegment(CBC_CommonBitSource* bits, + CFX_ByteString &result, FX_INT32 count, FX_BOOL fac1InEffect, FX_INT32 &e) +{ + FX_INT32 start = result.GetLength(); + while(count > 1) { + FX_INT32 nextTwoCharsBits = bits->ReadBits(11, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[nextTwoCharsBits / 45]); + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[nextTwoCharsBits % 45]); + count -= 2; + } + if(count == 1) { + FX_INT32 itemp = bits->ReadBits(6, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[itemp]); + } + if(fac1InEffect) { + for(FX_INT32 i = start; i < result.GetLength(); i++) { + if(result[i] == '%') { + if((i < result.GetLength() - 1) && result[i + 1] == '%') { + result.Delete(i + 1, 1); + } else { + result.SetAt(i, (FX_CHAR)0x1d); + } + } + } + } +} +void CBC_QRDecodedBitStreamParser::DecodeNumericSegment(CBC_CommonBitSource* bits, CFX_ByteString &result, FX_INT32 count, FX_INT32 &e) +{ + while(count >= 3) { + FX_INT32 threeDigitsBits = bits->ReadBits(10, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if(threeDigitsBits >= 1000) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[threeDigitsBits / 100]); + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[(threeDigitsBits / 10) % 10]); + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[threeDigitsBits % 10]); + count -= 3; + } + if(count == 2) { + FX_INT32 twoDigitBits = bits->ReadBits(7, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if(twoDigitBits >= 100) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[twoDigitBits / 10]); + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[twoDigitBits % 10]); + } else if(count == 1) { + FX_INT32 digitBits = bits->ReadBits(4, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if(digitBits >= 10) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[digitBits]); + } +} +const CFX_ByteString CBC_QRDecodedBitStreamParser::GuessEncoding(CFX_ByteArray *bytes) +{ + return *UTF_8; +} +FX_INT32 CBC_QRDecodedBitStreamParser::ParseECIValue(CBC_CommonBitSource* bits, FX_INT32 &e) +{ + FX_INT32 firstByte = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + if((firstByte & 0x80) == 0) { + return firstByte & 0x7f; + } else if((firstByte & 0xc0) == 0x80) { + FX_INT32 secondByte = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + return ((firstByte & 0x3f) << 8) | secondByte; + } else if((firstByte & 0xe0) == 0xc0) { + FX_INT32 secondThirdByte = bits->ReadBits(16, e); + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + return ((firstByte & 0x1f) << 16) | secondThirdByte; + } + e = BCExceptionBadECI; + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + return 0; +} -- cgit v1.2.3