85 lines
3.1 KiB
C
85 lines
3.1 KiB
C
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// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
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#ifndef __DECODED_BIT_STREAM_PARSER_PD_H__
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#define __DECODED_BIT_STREAM_PARSER_PD_H__
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/*
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* Copyright 2010 ZXing authors All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <bigint/BigInteger.hh>
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#include <zxing/common/Array.h>
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#include <zxing/common/Str.h>
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#include <zxing/common/DecoderResult.h>
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namespace zxing {
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namespace pdf417 {
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class DecodedBitStreamParser {
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protected:
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enum Mode {
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ALPHA,
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LOWER,
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MIXED,
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PUNCT,
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ALPHA_SHIFT,
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PUNCT_SHIFT
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};
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private:
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static const int TEXT_COMPACTION_MODE_LATCH;
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static const int BYTE_COMPACTION_MODE_LATCH;
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static const int NUMERIC_COMPACTION_MODE_LATCH;
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static const int BYTE_COMPACTION_MODE_LATCH_6;
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static const int BEGIN_MACRO_PDF417_CONTROL_BLOCK;
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static const int BEGIN_MACRO_PDF417_OPTIONAL_FIELD;
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static const int MACRO_PDF417_TERMINATOR;
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static const int MODE_SHIFT_TO_BYTE_COMPACTION_MODE;
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static const int MAX_NUMERIC_CODEWORDS;
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static const int PL;
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static const int LL;
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static const int AS;
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static const int ML;
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static const int AL;
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static const int PS;
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static const int PAL;
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static const int EXP900_SIZE;
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static const char PUNCT_CHARS[];
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static const char MIXED_CHARS[];
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static ArrayRef<BigInteger> EXP900;
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static ArrayRef<BigInteger> initEXP900();
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static int textCompaction(ArrayRef<int> codewords, int codeIndex, Ref<String> result);
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static void decodeTextCompaction(ArrayRef<int> textCompactionData,
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ArrayRef<int> byteCompactionData,
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int length,
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Ref<String> result);
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static int byteCompaction(int mode, ArrayRef<int> codewords, int codeIndex, Ref<String> result);
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static int numericCompaction(ArrayRef<int> codewords, int codeIndex, Ref<String> result);
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static Ref<String> decodeBase900toBase10(ArrayRef<int> codewords, int count);
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public:
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DecodedBitStreamParser();
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static Ref<DecoderResult> decode(ArrayRef<int> codewords);
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};
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} /* namespace pdf417 */
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} /* namespace zxing */
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#endif // __DECODED_BIT_STREAM_PARSER_PD_H__
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