/*
* qrencode - QR Code encoder
*
* Input data chunk class
* Copyright (C) 2006-2011 Kentaro Fukuchi <kentaro@fukuchi.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "qrencode.h"
#include "qrspec.h"
#include "mqrspec.h"
#include "bitstream.h"
#include "qrinput.h"
/******************************************************************************
* Utilities
*****************************************************************************/
int QRinput_isSplittableMode(QRencodeMode mode)
{
return (mode >= QR_MODE_NUM && mode <= QR_MODE_KANJI);
}
/******************************************************************************
* Entry of input data
*****************************************************************************/
static QRinput_List *QRinput_List_newEntry(QRencodeMode mode, int size, const unsigned char *data)
{
QRinput_List *entry;
if(QRinput_check(mode, size, data)) {
errno = EINVAL;
return NULL;
}
entry = (QRinput_List *)malloc(sizeof(QRinput_List));
if(entry == NULL) return NULL;
entry->mode = mode;
entry->size = size;
if(size > 0) {
entry->data = (unsigned char *)malloc(size);
if(entry->data == NULL) {
free(entry);
return NULL;
}
memcpy(entry->data, data, size);
}
entry->bstream = NULL;
entry->next = NULL;
return entry;
}
static void QRinput_List_freeEntry(QRinput_List *entry)
{
if(entry != NULL) {
free(entry->data);
BitStream_free(entry->bstream);
free(entry);
}
}
static QRinput_List *QRinput_List_dup(QRinput_List *entry)
{
QRinput_List *n;
n = (QRinput_List *)malloc(sizeof(QRinput_List));
if(n == NULL) return NULL;
n->mode = entry->mode;
n->size = entry->size;
n->data = (unsigned char *)malloc(n->size);
if(n->data == NULL) {
free(n);
return NULL;
}
memcpy(n->data, entry->data, entry->size);
n->bstream = NULL;
n->next = NULL;
return n;
}
/******************************************************************************
* Input Data
*****************************************************************************/
QRinput *QRinput_new(void)
{
return QRinput_new2(0, QR_ECLEVEL_L);
}
QRinput *QRinput_new2(int version, QRecLevel level)
{
QRinput *input;
if(version < 0 || version > QRSPEC_VERSION_MAX || level > QR_ECLEVEL_H) {
errno = EINVAL;
return NULL;
}
input = (QRinput *)malloc(sizeof(QRinput));
if(input == NULL) return NULL;
input->head = NULL;
input->tail = NULL;
input->version = version;
input->level = level;
input->mqr = 0;
input->fnc1 = 0;
return input;
}
QRinput *QRinput_newMQR(int version, QRecLevel level)
{
QRinput *input;
if(version <= 0 || version > MQRSPEC_VERSION_MAX) goto INVALID;
if((MQRspec_getECCLength(version, level) == 0)) goto INVALID;
input = QRinput_new2(version, level);
if(input == NULL) return NULL;
input->mqr = 1;
return input;
INVALID:
errno = EINVAL;
return NULL;
}
int QRinput_getVersion(QRinput *input)
{
return input->version;
}
int QRinput_setVersion(QRinput *input, int version)
{
if(input->mqr || version < 0 || version > QRSPEC_VERSION_MAX) {
errno = EINVAL;
return -1;
}
input->version = version;
return 0;
}
QRecLevel QRinput_getErrorCorrectionLevel(QRinput *input)
{
return input->level;
}
int QRinput_setErrorCorrectionLevel(QRinput *input, QRecLevel level)
{
if(input->mqr || level > QR_ECLEVEL_H) {
errno = EINVAL;
return -1;
}
input->level = level;
return 0;
}
int QRinput_setVersionAndErrorCorrectionLevel(QRinput *input, int version, QRecLevel level)
{
if(input->mqr) {
if(version <= 0 || version > MQRSPEC_VERSION_MAX) goto INVALID;
if((MQRspec_getECCLength(version, level) == 0)) goto INVALID;
} else {
if(version < 0 || version > QRSPEC_VERSION_MAX) goto INVALID;
if(level > QR_ECLEVEL_H) goto INVALID;
}
input->version = version;
input->level = level;
return 0;
INVALID:
errno = EINVAL;
return -1;
}
static void QRinput_appendEntry(QRinput *input, QRinput_List *entry)
{
if(input->tail == NULL) {
input->head = entry;
input->tail = entry;
} else {
input->tail->next = entry;
input->tail = entry;
}
entry->next = NULL;
}
int QRinput_append(QRinput *input, QRencodeMode mode, int size, const unsigned char *data)
{
QRinput_List *entry;
entry = QRinput_List_newEntry(mode, size, data);
if(entry == NULL) {
return -1;
}
QRinput_appendEntry(input, entry);
return 0;
}
/**
* Insert a structured-append header to the head of the input data.
* @param input input data.
* @param size number of structured symbols.
* @param number index number of the symbol. (1 <= number <= size)
* @param parity parity among input data. (NOTE: each symbol of a set of structured symbols has the same parity data)
* @retval 0 success.
* @retval -1 error occurred and errno is set to indeicate the error. See Execptions for the details.
* @throw EINVAL invalid parameter.
* @throw ENOMEM unable to allocate memory.
*/
__STATIC int QRinput_insertStructuredAppendHeader(QRinput *input, int size, int number, unsigned char parity)
{
QRinput_List *entry;
unsigned char buf[3];
if(size > MAX_STRUCTURED_SYMBOLS) {
errno = EINVAL;
return -1;
}
if(number <= 0 || number > size) {
errno = EINVAL;
return -1;
}
buf[0] = (unsigned char)size;
buf[1] = (unsigned char)number;
buf[2] = parity;
entry = QRinput_List_newEntry(QR_MODE_STRUCTURE, 3, buf);
if(entry == NULL) {
return -1;
}
entry->next = input->head;
input->head = entry;
return 0;
}
int QRinput_appendECIheader(QRinput *input, unsigned int ecinum)
{
unsigned char data[4];
if(ecinum > 999999) {
errno = EINVAL;
return -1;
}
/* We manually create byte array of ecinum because
(unsigned char *)&ecinum may cause bus error on some architectures, */
data[0] = ecinum & 0xff;
data[1] = (ecinum >> 8) & 0xff;
data[2] = (ecinum >> 16) & 0xff;
data[3] = (ecinum >> 24) & 0xff;
return QRinput_append(input, QR_MODE_ECI, 4, data);
}
void QRinput_free(QRinput *input)
{
QRinput_List *list, *next;
if(input != NULL) {
list = input->head;
while(list != NULL) {
next = list->next;
QRinput_List_freeEntry(list);
list = next;
}
free(input);
}
}
static unsigned char QRinput_calcParity(QRinput *input)
{
unsigned char parity = 0;
QRinput_List *list;
int i;
list = input->head;
while(list != NULL) {
if(list->mode != QR_MODE_STRUCTURE) {
for(i=list->size-1; i>=0; i--) {
parity ^= list->data[i];
}
}
list = list->next;
}
return parity;
}
QRinput *QRinput_dup(QRinput *input)
{
QRinput *n;
QRinput_List *list, *e;
if(input->mqr) {
n = QRinput_newMQR(input->version, input->level);
} else {
n = QRinput_new2(input->version, input->level);
}
if(n == NULL) return NULL;
list = input->head;
while(list != NULL) {
e = QRinput_List_dup(list);
if(e == NULL) {
QRinput_free(n);
return NULL;
}
QRinput_appendEntry(n, e);
list = list->next;
}
return n;
}
/******************************************************************************
* Numeric data
*****************************************************************************/
/**
* Check the input data.
* @param size
* @param data
* @return result
*/
static int QRinput_checkModeNum(int size, const char *dat
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二维码 QT生成程序 测试通过 C++,为了编译不通过的同志使用~ Linux环境下QT中实现二维码生成有两种方法,这两种方法都需要用到开源的代码--qrencode。第一种方法是下载qrencode源码后,将其移植到目标板子上,然后在程序中包含其路径进行使用;第二种方法是将qrencode源码添加到自己的程序中,直接调用使用。本文使用的第二种方法进行生成二维码图片。
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收起资源包目录
demo.zip (26个子文件)
demo
test
barcodegentest.pro 873B
widget.ui 2KB
qrcode
mqrspec.c 7KB
mmask.c 4KB
mask.c 7KB
qrencode_inner.h 3KB
qrspec.h 6KB
split.h 2KB
rscode.h 1KB
config.h 2KB
qrinput.h 4KB
qrencode.h 20KB
qrspec.c 15KB
qrinput.c 38KB
mask.h 2KB
qrencode.c 20KB
rscode.c 9KB
bitstream.h 1KB
bitstream.c 4KB
mmask.h 1KB
split.c 8KB
mqrspec.h 5KB
widget.cpp 2KB
main.cpp 164B
barcodegentest.pro.user 23KB
widget.h 382B
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