#include
#include "stdio.h"
#include "stdlib.h" struct BmpHead
{
WORD bfType;
DWORD bfSize;
DWORD bfReserved;
DWORD bfOffBits;
DWORD biSize;
LONG biWidth;
LONG biHeight;
WORD biPlanes;
WORD biBitCount;
DWORD biCompression;
DWORD biSizeImage;
LONG biXPelsPerMeter;
LONG biYPelsPerMeter;
DWORD biClrUsed;
DWORD biClrImportant;
}; unsigned char* ReadImage(char* file,int ImageSize,int bfOffBits);
BmpHead * ReadHead(char* file);
char* ReadColorMap(char* file,int MapSize);
void WriteToFile(char* filename,BmpHead* Head,char* ColorMap,unsigned char* Image); void main(void)
{
char* filename = "c:\\herogo.bmp";
BmpHead* bmHead;
char* ColorMap;
unsigned char* Image;
bmHead = ReadHead(filename);
ColorMap = ReadColorMap(filename,bmHead->bfOffBits-54);
Image = ReadImage(filename,bmHead->biSizeImage,bmHead->bfOffBits);
WriteToFile("d:\\gogo.bmp",bmHead,ColorMap,Image); }
char* ReadColorMap(char* file,int MapSize){
FILE* pic;
char* ColorMap;
ColorMap = new char[MapSize];
if( (pic = fopen(file, "rb" )) == NULL )
exit( 0 );
fseek(pic,54,SEEK_SET);
fread(ColorMap,sizeof(char),MapSize,pic);
fclose(pic);
return ColorMap;
} unsigned char* ReadImage(char* file,int ImageSize,int bfOffBits){
unsigned char* raw_data;
raw_data=new unsigned char[ImageSize];
FILE* pic;
if( (pic = fopen(file, "rb" )) == NULL )
exit( 0 );
fseek(pic,bfOffBits,SEEK_SET);
fread(raw_data,sizeof(char),ImageSize,pic);
fclose(pic);
return raw_data;
} BmpHead* ReadHead(char* file){
FILE* pic;
typedef long INT32;
typedef unsigned short int INT16;
typedef unsigned char U_CHAR; #define UCH(x) ((int) (x))
#define GET_2B(array,offset) ((INT16) UCH(array[offset]) (((INT16) UCH(array[offset 1])) << 8))
#define GET_4B(array,offset) ((INT32) UCH(array[offset]) (((INT32) UCH(array[offset 1])) << 8) (((INT32) UCH(array[offset 2])) << 16) (((INT32) UCH(array[offset 3])) << 24))
#define FREAD(file,buf,sizeofbuf) ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) U_CHAR bmpfileheader[14] = { 0 } ;
U_CHAR bmpinfoheader[40] = { 0 } ;
if( (pic = fopen(file, "rb" )) == NULL )
exit( 0 );
FREAD(pic,bmpfileheader,14);
FREAD(pic,bmpinfoheader,40);
BmpHead* bmHead;
bmHead = new BmpHead;
bmHead->bfType = GET_2B(bmpfileheader,0);
bmHead->bfSize = GET_4B(bmpfileheader,2);
bmHead->bfReserved = GET_4B(bmpfileheader,6);
bmHead->bfOffBits = GET_4B(bmpfileheader,10);
bmHead->biSize = GET_4B(bmpinfoheader,0);
bmHead->biWidth = GET_4B(bmpinfoheader,4);
bmHead->biHeight = GET_4B(bmpinfoheader,8);
bmHead->biPlanes = GET_4B(bmpinfoheader,12);
bmHead->biBitCount = GET_2B(bmpinfoheader,12);
bmHead->biCompression = GET_2B(bmpinfoheader,16);
bmHead->biSizeImage = GET_4B(bmpinfoheader,20);
bmHead->biXPelsPerMeter = GET_4B(bmpinfoheader,24);
bmHead->biYPelsPerMeter = GET_4B(bmpinfoheader,28);
bmHead->biClrUsed = GET_4B(bmpinfoheader,32);
bmHead->biClrImportant = GET_4B(bmpinfoheader,36); fclose(pic);
printf("printm\n",sizeof(BmpHead));
printf("printm\n",bmHead[1]);
return bmHead;
} void WriteToFile(char* filename,BmpHead* Head,char* ColorMap,unsigned char* Image){
FILE *out;
if( (out = fopen( filename, "wb" )) != NULL )
{
int a;
a=sizeof(BmpHead);
a=a-2;
printf("print:m\n",a);
fwrite(Head,a,1,out); fwrite(ColorMap,sizeof(char),(Head->bfOffBits-54),out);
fwrite(Image,sizeof(char),Head->biSizeImage,out);
}
fclose(out); } 各位大大們好..小弟有程式上的問題想請教一下
上面的程式主要是把..在C碟的一張BMP..把BMP讀出...再寫入至D碟變成一模一樣的BMP..二張圖是一樣的..功能有點像COPY...主要是因為老師想要我們去知道BMP的格式...但問題來了..就是..編譯成功.但卻..在D碟的BMP去開啟時卻有問題..開不起來..應該是失敗了..還有一點..一直覺得很怪就是我明明讀了54個BYTE到BmpHead,但是BmpHead卻是56Byte..因為我有用sizeof(BmpHead)看出來..拜託高手們..指點迷津....拜託...拜託..很急..><
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