c-bitmap.zip_bitmap

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <malloc.h> #include <ctype.h> #include <process.h> #include "BMP.h" BITMAPFILEHEADER bmfh; BITMAPINFOHEADER bmih; BYTE *imgData;//定义一个字节型的指针变量 bool bReadBMFH=false; bool bReadBMIH=false; bool bReadPixel=false; //检查路径是否合法：文件能打开；以bmp为后缀名 int CheckFilePath(char *filepath); //读入位图的文件头 int ReadFileHeader(char *filepath,BITMAPFILEHEADER *bmfh); //打印位图的文件头 void PrintFileHeader(BITMAPFILEHEADER *bmfh); //读入位图的信息头 int ReadInfoHeader(char *filepath,BITMAPINFOHEADER *bmih); //打印位图的信息头 void PrintInfoHeader(BITMAPINFOHEADER *bmih); //创建8位位图的调色板 int CreatePalette(RGBQUAD pal[]); //读入位图的像素数据 int ReadPixelData(char *filepath,BYTE *imgData); //计算每行像素所占的字节数 LONG GetLineBytes(int imgWidth,int bitCount); //打印位图的像素数据 void PrintPixelData(BYTE *imgData,int width,int height,int bitCount); //打印菜单选项 void PrintMenu(); //另存为位图 int SaveAsImage(char *filepath); //显示位图 void ShowImage(char * filepath); int main() { char filepath[256];//开辟了一个256大小的字符型一维数组 char saveasfilepath[256]; int i; int width; int height; int bitCount; DWORD dwLineBytes; int select; int q=0; system("echo off"); system("color 2"); printf("-----------TIMimage-----------\n"); printf("Input the path of the BMP file:\n"); gets(filepath);//从键盘输入的字符放在filepath数组中 i=CheckFilePath(filepath);//调用函数 if(i==-1) { return -1; } do { PrintMenu(); scanf("%u",&select); switch(select) { case 0: { printf("Input the path of the BMP file:\n"); scanf("%s",filepath); CheckFilePath(filepath); break; } case 1: { i=ReadFileHeader(filepath,&bmfh); if(i!=-1) { printf("Read the file header successfully.\n"); bReadBMFH=true; break; } else { printf("Read the file header failed.\n"); bReadBMFH=false; q=1; break; } } case 2: { i=ReadInfoHeader(filepath,&bmih); if(i!=-1) { printf("Read the info header successfully.\n"); bReadBMIH=true; break; } else { printf("Read the info header failed.\n"); bReadBMIH=false; q=1; break; } } case 3: { if(!bReadBMIH) { printf("Please read the info header at first.\n"); break; } height=bmih.biHeight; width=bmih.biWidth; bitCount=bmih.biBitCount; dwLineBytes=GetLineBytes(width,bitCount); imgData=(BYTE*)malloc(dwLineBytes*height*sizeof(BYTE)); if(!imgData) { printf("Can not allocate memory for the image.\n"); q=1; break; } i=ReadPixelData(filepath,imgData); if(i==-1) { printf("Read the pixel data failed.\n"); bReadPixel=false; q=1; break; } else { printf("Read the pixel data successfully.\n"); bReadPixel=true; break; } } case 4: { if(bReadBMFH) { PrintFileHeader(&bmfh); break; } else { printf("Please read the file header at first.\n"); break; } } case 5: { if(bReadBMIH) { PrintInfoHeader(&bmih); break; } else { printf("Please read the info header at first.\n"); break; } } case 6: { if(bReadPixel) { PrintPixelData(imgData,width,height,bitCount); break; } else { printf("Please read the pixel data at first.\n"); break; } } case 7: { ShowImage(filepath); break; } case 8: { printf("Input the path(ex. d://poon.bmp) you want to save:\n"); scanf("%s",saveasfilepath); i=SaveAsImage(saveasfilepath); if(i==-1) { printf("Error: failed to save the image.\n"); break; } break; } default: q=1; break; } select=9527; } while (q==0); return 0; } int ReadFileHeader(char *filepath,BITMAPFILEHEADER *bmfh) { FILE *fp; fp=fopen(filepath,"rb"); if(!fp) { printf("Can not open the file:%s\n",filepath); return -1; } if(fread(&bmfh->bfType,sizeof(WORD),1,fp)!=1) { printf("Can not read bfType in the file header.\n"); fclose(fp); return -1; } if(fread(&bmfh->bfSize,sizeof(DWORD),1,fp)!=1) { printf("Can not read bfSize in the file header.\n"); fclose(fp); return -1; } if(fread(&bmfh->bfReserved1,sizeof(WORD),1,fp)!=1) { printf("Can not read bfReserved1 in the file header.\n"); fclose(fp); return -1; } if(fread(&bmfh->bfReserved2,sizeof(WORD),1,fp)!=1) { printf("Can not read bfReserved2 in the file header.\n"); fclose(fp); return -1; } if(fread(&bmfh->bfOffBits,sizeof(DWORD),1,fp)!=1) { printf("Can not read bfOffBits in the file header.\n"); fclose(fp); return -1; } fclose(fp); return 0; } int ReadInfoHeader(char *filepath,BITMAPINFOHEADER *bmih) { FILE *fp; fp=fopen(filepath,"rb"); if(!fp) { printf("Can not open the file:%s\n",filepath); return -1; } fseek(fp,14,SEEK_SET); if(fread(&bmih->biSize,sizeof(DWORD),1,fp)!=1) { printf("Can not read biSize in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biWidth,sizeof(LONG),1,fp)!=1) { printf("Can not read biWidth in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biHeight,sizeof(LONG),1,fp)!=1) { printf("Can not read biHeight in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biPlanes,sizeof(WORD),1,fp)!=1) { printf("Can not read biPlanes in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biBitCount,sizeof(WORD),1,fp)!=1) { printf("Can not read biBitCount in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biCompression,sizeof(DWORD),1,fp)!=1) { printf("Can not read biCompression in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biSizeImage,sizeof(DWORD),1,fp)!=1) { printf("Can not read biSizeImage in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biXPelsPerMeter,sizeof(LONG),1,fp)!=1) { printf("Can not read biXPelsPerMeter in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biYPelsPerMeter,sizeof(LONG),1,fp)!=1) { printf("Can not read biYPelsPerMeter in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biClrUsed,sizeof(DWORD),1,fp)!=1) { printf("Can not read biClrUsed in the info header.\n"); fclose(fp); return -1; } if(fread(&bmih->biClrImportant,sizeof(DWORD),1,fp)!=1) { printf("Can not read biClrImportant in the info header.\n"); fclose(fp); return -1; } fclose(fp); return 0; } int CreatePalette(RGBQUAD pal[]) { int i; if(sizeof(pal)/sizeof(RGBQUAD)!=256) { printf("The size of the palette must be 256.\n"); return -1; } for(i=0;i<256;i++) { pal[i].rgbBlue=i; pal[i].rgbGreen=i; pal[i].rgbRed=i; pal[i].rgbReserved=0; } return 0; } int ReadPixelData(char *filepath,BYTE *imgData) { BITMAPINFOHEADER bmih; BITMAPFILEHEADER bmfh; BYTE *data; FILE *fp; int n; int width; int height; int bitCount; DWORD dwLineBytes; n=ReadFileHeader(filepath,&bmfh); if(n==-1) { printf("Can not read the file header of the BMP file.\n"); return -1; } n=ReadInfoHeader(filepath,&bmih); if(n==-1) { printf("Can not read the info header of the BMP file.\n"); return -1; } width=bmih.biWidth; height=bmih.biHeight; bitCount=bmih.biBitCount; dwLineBytes=GetLineBytes(width,bitCount); if(_msize(imgData)!=(dwLineBytes*height)) { printf("The size you allocate for the p