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factor 2008-07-13 21:15:55 +00:00
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/* qr.c Handles QR Code by utilising libqrencode */
/*
libzint - the open source barcode library
Copyright (C) 2008 Robin Stuart <zint@hotmail.co.uk>
Copyright (C) 2006 Kentaro Fukuchi <fukuchi@megaui.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <string.h>
#include <qrencode.h> /* The assumption is that this is already installed */
#include "common.h"
static int kanji = 0;
static QRecLevel level = QR_ECLEVEL_L;
QRcode *encode(int security, int size, const unsigned char *intext)
{
int version;
QRecLevel level;
QRencodeMode hint;
QRcode *code;
if(kanji) {
hint = QR_MODE_KANJI;
} else {
hint = QR_MODE_8;
}
if((security >= 1) && (security <= 4)) {
switch (security) {
case 1: level = QR_ECLEVEL_L; break;
case 2: level = QR_ECLEVEL_M; break;
case 3: level = QR_ECLEVEL_Q; break;
case 4: level = QR_ECLEVEL_H; break;
}
} else {
level = QR_ECLEVEL_L;
}
if((size >= 1) && (size <= 40)) {
version = size;
} else {
version = 0;
}
code = QRcode_encodeString(intext, version, level, hint, 1);
return code;
}
int qr_code(struct zint_symbol *symbol, unsigned char source[])
{
QRcode *code;
int errno = 0;
int i, j;
code = encode(symbol->option_1, symbol->option_2, source);
if(code == NULL) {
strcpy(symbol->errtxt, "error: libqrencode failed to encode the input data");
return ERROR_ENCODING_PROBLEM;
}
symbol->width = code->width;
symbol->rows = code->width;
for(i = 0; i < code->width; i++) {
for(j = 0; j < code->width; j++) {
if((*(code->data + (i * code->width) + j) & 0x01) == 0) {
symbol->encoded_data[i][j] = '0';
} else {
symbol->encoded_data[i][j] = '1';
}
}
symbol->row_height[i] = 1;
}
QRcode_free(code);
return errno;
}