pdf417lib.rar_pdf417_pdf417lib_pdf417lib .zip_pdf417条码生成_vc 条

/****************************************************************************** * 文件名：pdf417lib.c * 功能 ：条形码操作函数库 * modified by PRTsinghua@hotmail.com ******************************************************************************/ #include <malloc.h> #include <string.h> #include <stdio.h> #include <math.h> #define __INCLUDE_PDF417LIBIMP_H__ #include "pdf417libimp.h" #undef __INCLUDE_PDF417LIBIMP_H__ #include "pdf417lib.h" #ifndef NULL #ifdef __cplusplus #define NULL 0 #else #define NULL ((void *)0) #endif #endif char* MIXED_SET = "0123456789&\r\t,:#-.$/+%*=^"; char* PUNCTUATION_SET = ";<>@[\\]_`~!\r\t,:\n-.$/\"|*()?{}'"; // 线性表元素结构定义 typedef struct _listElement { char type; int start; int end; } listElement, *pListElement; // 线性表结果定义 typedef struct _arrayList { pListElement array; int size; int capacity; } arrayList, *pArrayList; typedef struct _pdf417class { int bitPtr; int cwPtr; pdf417param *param; } pdf417class, *pPdf417class; /****************************************************************************** * 初始化线性表 ******************************************************************************/ void listInit(pArrayList list) { list->capacity = 20; list->size = 0; list->array = (pListElement)malloc(list->capacity * sizeof(listElement)); } /****************************************************************************** * 释放线性表 ******************************************************************************/ void listFree(pArrayList list) { free(list->array); list->array = NULL; } /****************************************************************************** * 给线性表增加一个元素 ******************************************************************************/ void listAdd(pArrayList list, char type, int start, int end) { if (list->size == list->capacity) { pListElement temp; list->capacity *= 2; temp = (pListElement)malloc(list->capacity * sizeof(listElement)); memcpy(temp, list->array, list->size * sizeof(listElement)); free(list->array); list->array = temp; } list->array[list->size].type = type; list->array[list->size].start = start; list->array[list->size].end = end; ++list->size; } /****************************************************************************** * 获得线性表某个位置的元素 ******************************************************************************/ pListElement listGet(pArrayList list, int idx) { if (idx >= list->size || idx < 0) return NULL; return list->array + idx; } /****************************************************************************** * 删除线性表中某个元素 ******************************************************************************/ void listRemove(pArrayList list, int idx) { if (idx >= list->size || idx < 0) return; --list->size; memmove(list->array + idx, list->array + (idx + 1), (list->size - idx) * sizeof(listElement)); } /****************************************************************************** * 检查线性表元素类型 ******************************************************************************/ int checkElementType(pListElement p, char type) { if (!p) return 0; return (p->type == type); } /****************************************************************************** * 求取线性表元素长度 ******************************************************************************/ int getElementLength(pListElement p) { if (!p) return 0; return p->end - p->start; } /****************************************************************************** * 初始化二维条形码结构 ******************************************************************************/ void pdf417init(pPdf417param param) { param->options = 0; param->outBits = NULL; param->lenBits = 0; param->error = 0; param->lenText = -1; param->text = ""; param->yHeight = 3; param->aspectRatio = 0.5; } /****************************************************************************** * 释放二维挑衅伽马结果 ******************************************************************************/ void pdf417free(pPdf417param param) { if (param->outBits != NULL) { free(param->outBits); param->outBits = NULL; } } /****************************************************************************** * 输出宽度位17的码字 ******************************************************************************/ void outCodeword17(pPdf417class p, int codeword) { int bytePtr = p->bitPtr / 8; int bit = p->bitPtr - bytePtr * 8; p->param->outBits[bytePtr++] |= codeword >> (9 + bit); p->param->outBits[bytePtr++] |= codeword >> (1 + bit); codeword <<= 8; p->param->outBits[bytePtr] |= codeword >> (1 + bit); p->bitPtr += 17; } /****************************************************************************** * 输出宽度为18的码字 ******************************************************************************/ void outCodeword18(pPdf417class p, int codeword) { int bytePtr = p->bitPtr / 8; int bit = p->bitPtr - bytePtr * 8; p->param->outBits[bytePtr++] |= codeword >> (10 + bit); p->param->outBits[bytePtr++] |= codeword >> (2 + bit); codeword <<= 8; p->param->outBits[bytePtr] |= codeword >> (2 + bit); if (bit == 7) p->param->outBits[++bytePtr] |= 0x80; p->bitPtr += 18; } /****************************************************************************** * 输出数据码字 ******************************************************************************/ void outCodeword(pPdf417class p, int codeword) { outCodeword17(p, codeword); } /****************************************************************************** * 输出结束模式 ******************************************************************************/ void outStopPattern(pPdf417class p) { outCodeword18(p, STOP_PATTERN); } /****************************************************************************** * 输出起始模式 ******************************************************************************/ void outStartPattern(pPdf417class p) { outCodeword17(p, START_PATTERN); } /****************************************************************************** * 输出码字 ******************************************************************************/ void outPaintCode(pPdf417class p) { int codePtr = 0; int row; int rowMod; int *cluster; int edge; int column; p->param->bitColumns = START_CODE_SIZE * (p->param->codeColumns + 3) + STOP_SIZE; p->param->lenBits = ((p->param->bitColumns - 1) / 8 + 1) * p->param->codeRows; p->param->outBits = (char*)malloc(p->param->lenBits); memset(p->param->outBits, 0, p->param->lenBits); for (row = 0; row < p->param->codeRows; ++row) { p->bitPtr = ((p->param->bitColumns - 1) / 8 + 1) * 8 * row; rowMod = row % 3; cluster = CLUSTERS[rowMod]; outStartPattern(p); edge = 0; switch (rowMod) { case 0: edge = 30 * (row / 3) + ((p->param->codeRows - 1) / 3); break; case 1: edge = 30 * (row / 3) + p->param->errorLevel * 3 + ((p->param->codeRows - 1) % 3); break; default: edge = 30 * (row / 3) + p->param->codeColumns - 1; break; } outCodeword(p, cluster[edge]); for (column = 0; column < p->param->codeColumns; ++column) { outCodeword(p, cluster[p->param->codewords[codePtr++]]); } switch (rowMod) { case 0: edge = 30 * (ro