/*
* qrencode - QR Code encoder
*
* Input data chunk class
* Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>
*
* 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
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
//#include "config.h"
#include "qrencode.h"
#include "qrspec.h"
#include "bitstream.h"
#include "qrinput.h"
/******************************************************************************
* 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;
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;
return input;
}
int QRinput_getVersion(QRinput *input)
{
return input->version;
}
int QRinput_setVersion(QRinput *input, int version)
{
if(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(level > QR_ECLEVEL_H) {
errno = EINVAL;
return -1;
}
input->level = level;
return 0;
}
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 index index number of the symbol. (1 <= index <= 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
static int QRinput_insertStructuredAppendHeader(QRinput *input, int size, int index, unsigned char parity)
{
QRinput_List *entry;
unsigned char buf[3];
if(size > MAX_STRUCTURED_SYMBOLS) {
errno = EINVAL;
return -1;
}
if(index <= 0 || index > MAX_STRUCTURED_SYMBOLS) {
errno = EINVAL;
return -1;
}
buf[0] = (unsigned char)size;
buf[1] = (unsigned char)index;
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;
}
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;
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 *data)
{
int i;
for(i=0; i<size; i++) {
if(data[i] < '0' || data[i] > '9')
return -1;
}
return 0;
}
/**
* Estimates the length of the encoded bit stream of numeric data.
* @param size
* @return number of bits
*/
int QRinput_estimateBitsModeNum(int size)
{
int w;
int bits;
w = size / 3;
bits = w * 10;
switch(size - w * 3) {
case 1:
bits += 4;
break;
case 2:
bits += 7;
break;
default:
break;
}
return bits;
}
/**
* Convert the number data to a bit stream.
* @param entry
* @retval 0 success
* @retval -1 an error occurred and errno is set to indeicate the error.
* See Execptions for the details.
* @throw ENOMEM unable to allocate memory.
*/
static int QRinput_encodeModeNum(QRinput_List *entry, int version)
{
int words, i, ret;
unsigned int val;
words = entry->size / 3;
entry->bstream = BitStream_new();
if(entry->bstream == NULL) return -1;
val = 0x1;
ret = BitStream_appendNum(entry->bstream, 4, val);
if(ret < 0) goto ABORT;
val = entry->size;
ret = BitStream_appendNum(entry->bstream, QRspec_lengthIndicator(QR_MODE_NUM, version), val);
if(ret < 0) goto ABORT;
for(i=0; i<words; i++) {
val = (entry->data[i*3 ] - '0') * 100;
val += (entry->data[i*3+1] - '0') * 10;
val += (entry->data[i*3+2] - '0');
ret = BitStream_appendNum(entry->bstream, 10, val);
if(ret < 0) goto ABORT;
}
if(entry->size - words * 3 == 1) {
val = entry->data[words*3] - '0';
ret = BitStream_appendNum(entry->bstream, 4, val);
if(ret < 0) goto ABORT;
} else if(entry->size - words * 3 == 2) {
val = (entry->data[words*3 ] - '0') * 10;
val += (entry->data[words*3+1] - '0');
BitStream_appendNum(entry->bstream, 7, val);
if(ret < 0) goto ABORT;
}
ret
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生成(代图标).zip (46个子文件)
libqrencode
QRCodeGenerator.h 2KB
mask.c 6KB
qrinput.c 29KB
qrspec.h 5KB
bitstream.c 4KB
mask.h 1KB
split.h 2KB
qrencode.c 13KB
.DS_Store 6KB
rscode.c 9KB
split.c 7KB
bitstream.h 1KB
QRCodeGenerator.m 7KB
qrinput.h 3KB
qrspec.c 15KB
qrencode.h 15KB
rscode.h 1KB
1.png 34KB
EWeiMa
libzbar.a 2.9MB
Resources
zbar-helpicons.png 18KB
zbar-samples.png 1KB
.DS_Store 6KB
zbar-back.png 319B
zbar-help.html 3KB
.DS_Store 6KB
Headers
ZBarSDK
ZBarImageScanner.h 2KB
ZBarHelpController.h 2KB
ZBarReaderView.h 4KB
ZBarImage.h 2KB
zbar.h 52KB
ZBarSymbol.h 2KB
ZBarCaptureReader.h 4KB
zbar
Symbol.h 12KB
ImageScanner.h 4KB
Window.h 4KB
Image.h 8KB
Exception.h 5KB
Scanner.h 4KB
Processor.h 7KB
Video.h 4KB
Decoder.h 6KB
ZBarCameraSimulator.h 2KB
ZBarReaderController.h 5KB
ZBarReaderViewController.h 5KB
ZBarSDK.h 1KB
.DS_Store 6KB
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