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// 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
#ifndef _BC_DECODEDBITSTREAMPARSER_H_
#define _BC_DECODEDBITSTREAMPARSER_H_
class CBC_CommonDecoderResult;
class CBC_PDF417ResultMetadata;
class CBC_DecodedBitStreamPaser
{
public:
CBC_DecodedBitStreamPaser();
virtual ~CBC_DecodedBitStreamPaser();
static void Initialize();
static void Finalize();
static CBC_CommonDecoderResult* decode(CFX_Int32Array &codewords, CFX_ByteString ecLevel, int32_t &e);
private:
enum Mode {
ALPHA,
LOWER,
MIXED,
PUNCT,
ALPHA_SHIFT,
PUNCT_SHIFT
};
static int32_t MAX_NUMERIC_CODEWORDS;
static int32_t PL;
static int32_t LL;
static int32_t AS;
static int32_t ML;
static int32_t AL;
static int32_t PS;
static int32_t PAL;
static FX_CHAR PUNCT_CHARS[29];
static FX_CHAR MIXED_CHARS[30];
static int32_t NUMBER_OF_SEQUENCE_CODEWORDS;
static int32_t decodeMacroBlock(CFX_Int32Array &codewords, int32_t codeIndex, CBC_PDF417ResultMetadata* resultMetadata, int32_t &e);
static int32_t textCompaction(CFX_Int32Array &codewords, int32_t codeIndex, CFX_ByteString &result);
static void decodeTextCompaction(CFX_Int32Array &textCompactionData, CFX_Int32Array &byteCompactionData, int32_t length, CFX_ByteString &result);
static int32_t byteCompaction(int32_t mode, CFX_Int32Array &codewords, int32_t codeIndex, CFX_ByteString &result);
static int32_t numericCompaction(CFX_Int32Array &codewords, int32_t codeIndex, CFX_ByteString &result, int32_t &e);
static CFX_ByteString decodeBase900toBase10(CFX_Int32Array &codewords, int32_t count, int32_t &e);
};
#endif
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