一个简单的读取bmp文件的程序（c）

#include "stdio.h" #define UINT unsigned int #define DWORD unsigned long #define LONG long #define WORD unsigned short #define BYTE char typedef struct tagBITMAPFILEHEADER { /* bmfh */ UINT bfType; DWORD bfSize; UINT bfReserved1; UINT bfReserved2; DWORD bfOffBits; } BITMAPFILEHEADER; typedef struct tagBITMAPINFOHEADER { /* bmih */ DWORD biSize; LONG biWidth; LONG biHeight; WORD biPlanes; WORD biBitCount; DWORD biCompression; DWORD biSizeImage; LONG biXPelsPerMeter; LONG biYPelsPerMeter; DWORD biClrUsed; DWORD biClrImportant; } BITMAPINFOHEADER; typedef struct tagRGBQUAD { /* rgbq */ BYTE rgbBlue; BYTE rgbGreen; BYTE rgbRed; BYTE rgbReserved; } RGBQUAD; typedef struct tagBITMAPINFO { /* bmi */ BITMAPINFOHEADER bmiHeader; RGBQUAD bmiColors[1]; } BITMAPINFO; int main() { FILE *r_file, *w_file; char *r_filename = "3.bmp"; char *w_filename = "2.bmp"; BITMAPFILEHEADER bmfh; BITMAPINFO bmi; char r_buf[8]; int count, i; if((r_file = fopen(r_filename,"rb")) == NULL) { printf("READ FILE %s FAIL./n",r_filename); return 1; } if((w_file = fopen(w_filename,"wb")) == NULL) { printf("READ FILE %s FAIL./n",w_filename); return 1; } fseek(r_file,0,SEEK_SET); fread(&bmfh,sizeof(BITMAPFILEHEADER),1,r_file); fread(&bmi,sizeof(BITMAPINFO),1,r_file); fwrite(&bmfh,sizeof(BITMAPFILEHEADER),1,w_file); fwrite(&bmi,sizeof(BITMAPINFO),1,w_file); while(1) { if((count = fread(r_buf, sizeof(char), 8, r_file)) != 0) { for(i=0 ; i < count; i++) { r_buf[i] ^= 0xabcd; } fwrite(r_buf,sizeof(char),8,w_file); } else { break; } } fclose(r_file); fclose(w_file); return 0; }