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124 lines
3.6 KiB
C
124 lines
3.6 KiB
C
/*
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* qrencode - QR Code encoder
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*
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* Input data chunk class
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* Copyright (C) 2006-2011 Kentaro Fukuchi <kentaro@fukuchi.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __QRINPUT_H__
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#define __QRINPUT_H__
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#include "qrencode.h"
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#include "bitstream.h"
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int QRinput_isSplittableMode(QRencodeMode mode);
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/******************************************************************************
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* Entry of input data
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*****************************************************************************/
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typedef struct _QRinput_List QRinput_List;
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struct _QRinput_List {
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QRencodeMode mode;
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int size; ///< Size of data chunk (byte).
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unsigned char *data; ///< Data chunk.
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BitStream *bstream;
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QRinput_List *next;
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};
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/******************************************************************************
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* Input Data
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*****************************************************************************/
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struct _QRinput {
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int version;
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QRecLevel level;
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QRinput_List *head;
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QRinput_List *tail;
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int mqr;
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int fnc1;
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unsigned char appid;
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};
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/******************************************************************************
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* Structured append input data
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*****************************************************************************/
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typedef struct _QRinput_InputList QRinput_InputList;
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struct _QRinput_InputList {
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QRinput *input;
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QRinput_InputList *next;
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};
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struct _QRinput_Struct {
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int size; ///< number of structured symbols
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int parity;
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QRinput_InputList *head;
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QRinput_InputList *tail;
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};
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/**
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* Pack all bit streams padding bits into a byte array.
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* @param input input data.
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* @return padded merged byte stream
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*/
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extern unsigned char *QRinput_getByteStream(QRinput *input);
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extern int QRinput_estimateBitsModeNum(int size);
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extern int QRinput_estimateBitsModeAn(int size);
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extern int QRinput_estimateBitsMode8(int size);
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extern int QRinput_estimateBitsModeKanji(int size);
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extern QRinput *QRinput_dup(QRinput *input);
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extern const signed char QRinput_anTable[128];
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/**
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* Look up the alphabet-numeric convesion table (see JIS X0510:2004, pp.19).
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* @param __c__ character
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* @return value
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*/
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#define QRinput_lookAnTable(__c__) \
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((__c__ & 0x80)?-1:QRinput_anTable[(int)__c__])
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/**
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* Length of a standard mode indicator in bits.
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*/
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#define MODE_INDICATOR_SIZE 4
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/**
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* Length of a segment of structured-append header.
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*/
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#define STRUCTURE_HEADER_SIZE 20
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/**
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* Maximum number of symbols in a set of structured-appended symbols.
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*/
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#define MAX_STRUCTURED_SYMBOLS 16
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#ifdef WITH_TESTS
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extern BitStream *QRinput_mergeBitStream(QRinput *input);
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extern BitStream *QRinput_getBitStream(QRinput *input);
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extern int QRinput_estimateBitStreamSize(QRinput *input, int version);
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extern int QRinput_splitEntry(QRinput_List *entry, int bytes);
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extern int QRinput_lengthOfCode(QRencodeMode mode, int version, int bits);
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extern int QRinput_insertStructuredAppendHeader(QRinput *input, int size, int index, unsigned char parity);
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#endif
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#endif /* __QRINPUT_H__ */
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