hlp:荆州版本
This commit is contained in:
kite_lucs
+177
-177
@@ -1,177 +1,177 @@
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/*
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* qrencode - QR Code encoder
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*
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* Masking for Micro QR Code.
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* Copyright (C) 2006-2017 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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#if HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <errno.h>
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#include "qrencode.h"
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#include "mqrspec.h"
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#include "mmask.h"
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STATIC_IN_RELEASE void MMask_writeFormatInformation(int version, int width, unsigned char *frame, int mask, QRecLevel level)
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{
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unsigned int format;
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unsigned char v;
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int i;
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format = MQRspec_getFormatInfo(mask, version, level);
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for(i = 0; i < 8; i++) {
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v = 0x84 | (format & 1);
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frame[width * (i + 1) + 8] = v;
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format = format >> 1;
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}
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for(i = 0; i < 7; i++) {
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v = 0x84 | (format & 1);
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frame[width * 8 + 7 - i] = v;
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format = format >> 1;
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}
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}
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#define MASKMAKER(__exp__) \
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int x, y;\
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\
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for(y = 0; y < width; y++) {\
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for(x = 0; x < width; x++) {\
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if(*s & 0x80) {\
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*d = *s;\
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} else {\
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*d = *s ^ ((__exp__) == 0);\
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}\
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s++; d++;\
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}\
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}
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static void Mask_mask0(int width, const unsigned char *s, unsigned char *d)
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{
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MASKMAKER(y&1)
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}
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static void Mask_mask1(int width, const unsigned char *s, unsigned char *d)
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{
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MASKMAKER(((y/2)+(x/3))&1)
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}
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static void Mask_mask2(int width, const unsigned char *s, unsigned char *d)
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{
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MASKMAKER((((x*y)&1)+(x*y)%3)&1)
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}
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static void Mask_mask3(int width, const unsigned char *s, unsigned char *d)
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{
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MASKMAKER((((x+y)&1)+((x*y)%3))&1)
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}
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#define maskNum (4)
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typedef void MaskMaker(int, const unsigned char *, unsigned char *);
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static MaskMaker *maskMakers[maskNum] = {
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Mask_mask0, Mask_mask1, Mask_mask2, Mask_mask3
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};
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#ifdef WITH_TESTS
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unsigned char *MMask_makeMaskedFrame(int width, unsigned char *frame, int mask)
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{
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unsigned char *masked;
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masked = (unsigned char *)malloc((size_t)(width * width));
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if(masked == NULL) return NULL;
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maskMakers[mask](width, frame, masked);
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return masked;
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}
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#endif
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unsigned char *MMask_makeMask(int version, unsigned char *frame, int mask, QRecLevel level)
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{
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unsigned char *masked;
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int width;
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if(mask < 0 || mask >= maskNum) {
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errno = EINVAL;
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return NULL;
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}
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width = MQRspec_getWidth(version);
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masked = (unsigned char *)malloc((size_t)(width * width));
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if(masked == NULL) return NULL;
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maskMakers[mask](width, frame, masked);
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MMask_writeFormatInformation(version, width, masked, mask, level);
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return masked;
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}
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STATIC_IN_RELEASE int MMask_evaluateSymbol(int width, unsigned char *frame)
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{
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int x, y;
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unsigned char *p;
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int sum1 = 0, sum2 = 0;
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p = frame + width * (width - 1);
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for(x = 1; x < width; x++) {
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sum1 += (p[x] & 1);
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}
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p = frame + width * 2 - 1;
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for(y = 1; y < width; y++) {
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sum2 += (*p & 1);
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p += width;
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}
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return (sum1 <= sum2)?(sum1 * 16 + sum2):(sum2 * 16 + sum1);
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}
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unsigned char *MMask_mask(int version, unsigned char *frame, QRecLevel level)
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{
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int i;
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unsigned char *mask, *bestMask;
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int maxScore = 0;
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int score;
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int width;
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width = MQRspec_getWidth(version);
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mask = (unsigned char *)malloc((size_t)(width * width));
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if(mask == NULL) return NULL;
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bestMask = NULL;
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for(i = 0; i < maskNum; i++) {
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score = 0;
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maskMakers[i](width, frame, mask);
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MMask_writeFormatInformation(version, width, mask, i, level);
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score = MMask_evaluateSymbol(width, mask);
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if(score > maxScore) {
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maxScore = score;
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free(bestMask);
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bestMask = mask;
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mask = (unsigned char *)malloc((size_t)(width * width));
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if(mask == NULL) break;
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}
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}
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free(mask);
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return bestMask;
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}
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/*
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* qrencode - QR Code encoder
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*
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* Masking for Micro QR Code.
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* Copyright (C) 2006-2017 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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#if HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <errno.h>
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#include "qrencode.h"
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#include "mqrspec.h"
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#include "mmask.h"
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STATIC_IN_RELEASE void MMask_writeFormatInformation(int version, int width, unsigned char *frame, int mask, QRecLevel level)
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{
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unsigned int format;
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unsigned char v;
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int i;
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format = MQRspec_getFormatInfo(mask, version, level);
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for(i = 0; i < 8; i++) {
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v = 0x84 | (format & 1);
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frame[width * (i + 1) + 8] = v;
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format = format >> 1;
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}
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for(i = 0; i < 7; i++) {
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v = 0x84 | (format & 1);
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frame[width * 8 + 7 - i] = v;
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format = format >> 1;
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}
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}
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#define MASKMAKER(__exp__) \
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int x, y;\
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\
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for(y = 0; y < width; y++) {\
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for(x = 0; x < width; x++) {\
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if(*s & 0x80) {\
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*d = *s;\
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} else {\
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*d = *s ^ ((__exp__) == 0);\
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}\
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s++; d++;\
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}\
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}
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static void Mask_mask0(int width, const unsigned char *s, unsigned char *d)
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{
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MASKMAKER(y&1)
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}
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static void Mask_mask1(int width, const unsigned char *s, unsigned char *d)
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{
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MASKMAKER(((y/2)+(x/3))&1)
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}
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static void Mask_mask2(int width, const unsigned char *s, unsigned char *d)
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{
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MASKMAKER((((x*y)&1)+(x*y)%3)&1)
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}
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static void Mask_mask3(int width, const unsigned char *s, unsigned char *d)
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{
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MASKMAKER((((x+y)&1)+((x*y)%3))&1)
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}
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#define maskNum (4)
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typedef void MaskMaker(int, const unsigned char *, unsigned char *);
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static MaskMaker *maskMakers[maskNum] = {
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Mask_mask0, Mask_mask1, Mask_mask2, Mask_mask3
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};
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#ifdef WITH_TESTS
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unsigned char *MMask_makeMaskedFrame(int width, unsigned char *frame, int mask)
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{
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unsigned char *masked;
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masked = (unsigned char *)malloc((size_t)(width * width));
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if(masked == NULL) return NULL;
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maskMakers[mask](width, frame, masked);
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return masked;
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}
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#endif
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unsigned char *MMask_makeMask(int version, unsigned char *frame, int mask, QRecLevel level)
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{
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unsigned char *masked;
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int width;
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if(mask < 0 || mask >= maskNum) {
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errno = EINVAL;
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return NULL;
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}
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width = MQRspec_getWidth(version);
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masked = (unsigned char *)malloc((size_t)(width * width));
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if(masked == NULL) return NULL;
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maskMakers[mask](width, frame, masked);
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MMask_writeFormatInformation(version, width, masked, mask, level);
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return masked;
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}
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STATIC_IN_RELEASE int MMask_evaluateSymbol(int width, unsigned char *frame)
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{
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int x, y;
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unsigned char *p;
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int sum1 = 0, sum2 = 0;
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p = frame + width * (width - 1);
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for(x = 1; x < width; x++) {
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sum1 += (p[x] & 1);
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}
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p = frame + width * 2 - 1;
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for(y = 1; y < width; y++) {
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sum2 += (*p & 1);
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p += width;
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}
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return (sum1 <= sum2)?(sum1 * 16 + sum2):(sum2 * 16 + sum1);
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}
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unsigned char *MMask_mask(int version, unsigned char *frame, QRecLevel level)
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{
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int i;
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unsigned char *mask, *bestMask;
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int maxScore = 0;
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int score;
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int width;
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width = MQRspec_getWidth(version);
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mask = (unsigned char *)malloc((size_t)(width * width));
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if(mask == NULL) return NULL;
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bestMask = NULL;
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for(i = 0; i < maskNum; i++) {
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score = 0;
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maskMakers[i](width, frame, mask);
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MMask_writeFormatInformation(version, width, mask, i, level);
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score = MMask_evaluateSymbol(width, mask);
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if(score > maxScore) {
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maxScore = score;
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free(bestMask);
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bestMask = mask;
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mask = (unsigned char *)malloc((size_t)(width * width));
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if(mask == NULL) break;
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}
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}
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free(mask);
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return bestMask;
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}
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