c语言位图

‘壹’ BMP格式位图TC语言怎么显示

下面的是<<C & C++编程实例>>随书光盘上的代码,我在TC2. 0下编译通过. 它是利用了抖动技术显示了8bit和24bit的位图( 也就是256色和16M色位图),应该能满足你的需要. 不过,我想问下,你老师教过抖动显示吗? #include <stdio.h> #include <dos.h> #include <stdio.h> #include <conio.h> #define NoError 0 #define ErrorFileOpen 1 #define ErrorFileType 2 #define ErrorImageColor 3 typedef struct tagBITMAPFILEHEADER { unsigned int bfType; unsigned long bfSize; unsigned int bfReserved1; unsigned int bfReserved2; unsigned long bfoffBits; }BITMAPFILEHEADER; typedef struct tagBITMAPINFOHEADER { unsigned long biSize; unsigned long biWidth; unsigned long biHeight; unsigned int biPlanes; unsigned int biBitCount; unsigned long biCompression; unsigned long biSizeImage; unsigned long biXPelsPerMeter; unsigned long biYPelsPerMeter; unsigned long biClrUsed; unsigned long biClrImportant; } BITMAPINFOHEADER; typedef struct tagRGBQUAD { unsigned char rgbBlue; unsigned char rgbGreen; unsigned char rgbRed; unsigned char rgbReserved; } RGBQUAD; unsigned char PalReg[17]= { 0,1,2,3,4,5,6,7,8,9,10,11,12, 13,14,15,0}; unsigned char StandardPal[48]= { 0, 0, 0, 32, 0, 0, 0,32, 0, 32,32, 0, 0, 0,32, 32, 0,32, 0,32,32, 32,32, 32, 48, 48,48, 63, 0, 0, 0,63, 0, 63,63, 0, 0, 0,63, 63, 0,63, 0,63,63, 63,63,63, }; unsigned char LightnessMatrix [16][16]= { { 0,235,59,219,15,231,55,215,2, 232,56,217,12,229,52,213}, {128,64,187,123,143,79,183, 119,130,66,184,120,140,76,180, 116}, {33,192,16,251,47,207,31,247, 34,194,18,248,44,204,28,244}, {161,97,144,80,175,111,159,95, 162,98,146,82,172,108,156,92}, {8,225,48,208,5,239,63,223,10, 226,50,210,6,236,60,220}, {136,72,176,112,133,69,191, 127,138,74,178,114,134,70,188, 124}, {41,200,24,240,36,197,20,255, 42,202,26,242,38,198,22,252}, {169,105,152,88,164,100,148, 84,170,106,154,90,166,102,150, 86}, {3,233,57,216,13,228,53,212,1, 234,58,218,14,230,54,214}, {131,67,185,121,141,77,181, 117,129,65,186,122,142,78,182, 118}, {35,195,19,249,45,205,29,245, 32,193,17,250,46,206,30,246}, {163,99,147,83,173,109,157,93, 160,96,145,81,174,110,158,94}, {11,227,51,211,7,237,61,221,9, 224,49,209,4,238,62,222}, {139,75,179,115,135,71,189, 125,137,73,177,113,132,68,190, 126}, {43,203,27,243,39,199,23,253, 40,201,25,241,37,196,21,254}, {171,107,155,91,167,103,151, 87,168,104,153,89,165,101,149, 85}, }; unsigned char ColorTable[2][2][2]= {{{0,12},{10,14}},{{9,13},{11, 15}}}; unsigned char ColorMap[256][3]; int ShowBmp(char *FileName); int GetColor(unsigned char R,unsigned char G, unsigned char B,int X,int Y); void SetVideoMode(unsigned char Mode); void SetPalReg(unsigned char *palReg); void SetDacReg(unsigned char *DacReg, int Color, int Count); void PutPixel(int X, int Y, unsigned char Color); /* 主函数 */ void main (int argc, char *argv[]) { if(argc!=2) { printf("Usage:\tSHOW Filename.BMP\n"); exit(1); } ShowBmp(argv[1]); } /* 根据图像文件名，读取图像内容并利用抖动技术进行显示 */ int ShowBmp(char *FileName) { FILE *Fp; BITMAPFILEHEADER FileHead; BITMAPINFOHEADER InfoHead; RGBQUAD RGB; int N, W,Y,X,C,Color; unsigned char Buffer[4096]; Fp=fopen(FileName,"rb"); if (Fp==NULL) return(ErrorFileOpen); fread(&FileHead,sizeof( BITMAPFILEHEADER),1,Fp); if(FileHead.bfType!='BM') { fclose(Fp); return(ErrorFileType); } fread(&InfoHead,sizeof( BITMAPINFOHEADER),1,Fp); if(InfoHead.biBitCount!=8 && InfoHead.biBitCount!=24) { fclose(Fp); return(ErrorImageColor); } /* 设置显示模式和显示区域 */ SetVideoMode(0x12); SetPalReg(PalReg); SetDacReg(StandardPal,0,16); /* 对两种不同色彩数的图像分别进行处理 */ if(InfoHead.biBitCount==8) /* 256色 */ { for (N=0;N<256;N++) { fread(&RGB, sizeof(RGBQUAD),1,Fp); ColorMap[N][0]=RGB.rgbRed; ColorMap[N][1]=RGB.rgbGreen; ColorMap[N][2]=RGB.rgbBlue; } W=(InfoHead.biWidth+3)/4*4; for(Y=InfoHead.biHeight-1;Y>= 480;Y--) fread(Buffer,sizeof(unsigned char),W,Fp); for(;Y>0;Y--) { fread(Buffer,sizeof(unsigned char),W,Fp); for (X=0;X<InfoHead.biWidth && X<640;X++) { C=Buffer[X]; Color=GetColor(ColorMap[C][0], ColorMap[C][1],ColorMap[C][2], X,Y); PutPixel (X,Y,Color); } } } else /* 24bits真彩色 */ { W=(InfoHead.biWidth*3+3)/4*4; for(Y=InfoHead.biHeight-1;Y> 639;Y--) fread(Buffer,sizeof(unsigned char),W,Fp); for(;Y>=0;Y--) { fread(Buffer,sizeof(unsigned char),W,Fp); for(X=0;X<InfoHead.biWidth && X<640;X++) { C=X*3; Color=GetColor(Buffer[C+2], Buffer[C+1],Buffer[C],X,Y); PutPixel(X,Y,Color); } } } getch(); fclose(Fp); SetVideoMode(0x03); return(NoError); } int GetColor(unsigned char R, unsigned char G, unsigned char B, int X, int Y) { unsigned int L=LightnessMatrix[Y & 0x0F][X & 0x0F]; return(ColorTable[(unsigned int)R*256/255>L][(unsigned int)G*256/255>L][(unsigned int)B*256/255>L]); } void SetVideoMode(unsigned char Mode) { _AH=0x00; _AL=Mode; geninterrupt(0x10); } void SetPalReg(unsigned char *PalReg) { _ES=FP_SEG((unsigned char far*)PalReg); _DX=FP_OFF((unsigned char far*)PalReg); _AX=0x1002; geninterrupt(0x10); } void SetDacReg(unsigned char *DacReg,int Color,int Count) { _ES=FP_SEG((unsigned char far*)DacReg); _DX=FP_OFF((unsigned char far*)DacReg); _AX=0x1012; _BX=Color; _CX=Count; geninterrupt(0x10); } /* 在对应位置显示像素色彩 */ void PutPixel(int X, int Y, unsigned char Color) { _AH=0x0C; _AL=Color; _CX=X; _DX=Y; geninterrupt(0x10); } === 再给个实例链接,刚找到的: http://www.turinger.com/ article_view.asp?id=3