Code: #include <stdio.h> #include <stdlib.h> #include <dos.h> #include <mem.h> #include <string.h> #include <conio.h> #include <fcntl.h> #include <io.h> #include <math.h> unsigned char r[360],mini,mode; unsigned char rgb[256][3],rgb2[256][3],**rgb1,t; char *fullname; char *fname; int hist[256],tmp=0,sum=0; unsigned int screen_width=320; unsigned int first_row=0,first_column=0,last_row=0,last_column=0; int handle,i,j,rem,color_bits; long int file_size,data_offset,size_info_header,width,height,compression, image_size,xpelspermeter,ypelspermeter,colorsused,k,colorsimpt,p,index,max,min,**sum_hist; float theta,temp; void drawdot(int x, int y, int pal_index){ _AX=pal_index; _CX=x; _DX=y; _AH=0x0c; _BH=0x00; geninterrupt(0x10); } void main(){ gets(fname); strcpy(fullname,fname);strcat(fullname,".bmp"); handle=_open(fullname,O_RDONLY);if (handle==-1) exit(EXIT_FAILURE); _read(handle,r,2);if (r[0] !='B' | r[1] !='M') exit(EXIT_FAILURE); _read(handle,r,4);file_size=r[0]+0x100*r[1]+0x10000*r[2]+0x1000000*r[3]; _read(handle,r,2);_read(handle,r,2); _read(handle,r,4);data_offset=r[0]+256*r[1]+65536*r[2]+0x1000000*r[3]; _read(handle,r,4);size_info_header=r[0]+256*r[1]+65536*r[2]+0x1000000*r[3]; if (size_info_header !=40) exit(EXIT_FAILURE); _read(handle,r,4);width=r[0]+0x100*r[1]+0x10000*r[2]+0x1000000*r[3]; if (width > screen_width) exit(0); _read(handle,r,4);height=r[0]+0x100*r[1]+0x10000*r[2]+0x1000000*r[3]; _read(handle,r,2);if (r[0] != 1) exit(EXIT_FAILURE); _read(handle,r,2); color_bits=r[0]; _read(handle,r,4); compression=r[0]+0x100*r[1]+0x10000*r[2]+0x1000000*r[3]; _read(handle,r,4); image_size=r[0]+256*r[1]+256*256*r[2]+256*256*256*r[3]; _read(handle,r,4); xpelspermeter=r[0]+0x100*r[1]+0x10000*r[2]+0x1000000*r[3]; _read(handle,r,4); ypelspermeter=r[0]+0x100*r[1]+0x10000*r[2]+0x1000000*r[3]; _read(handle,r,4); colorsused=r[0]+0x100*r[1]+0x10000*r[2]+0x1000000*r[3]; _read(handle,r,4); colorsimpt=r[0]+0x100*r[1]+0x10000*r[2]+0x1000000*r[3]; _AX=0x1201;_BL=0x33;geninterrupt(0x10);//don't add RGB _AX=0x0013;geninterrupt(0x10);//set mode 13 i.e. 320x200x256 for (i=0;i<256;i++) { _read(handle,r,4); rgb[i][0]=r[2]>>2;rgb[i][1]=r[1]>>2;rgb[i][2]=r[0]>>2; } rgb1=calloc(height,sizeof(char*)); for(i=0;i<height;i++) rgb1[i]=calloc(width,sizeof(char)); for (i=0;i<256;i++) { rgb2[i][0]=i;rgb2[i][1]=i;rgb2[i][2]=i; } _ES=FP_SEG(rgb2);_DX=FP_OFF(rgb2); _BX=0;_CX=0x100; _AX=0x1012; geninterrupt(0x10);//set DAC from rgb first_column=(screen_width-width)/2; last_row=first_row+height-1;last_column=first_column+width-1; rem=4 - (width % 4); for (i=0;i<=height-1;i++) { _read(handle,r,width); for (j=0;j<=width-1;j++) { //drawdot(first_column+j,last_row-i,r[j]); rgb1[i][j]=(rgb2[r[j]][0]+rgb2[r[j]][1]+rgb2[r[j]][2])/3; //printf("%d\n",rgb1[i][j]); //delay(100); } if (rem==1) _read(handle,r,1); else if (rem==2) _read(handle,r,2); else if (rem==3) _read(handle,r,3);//getch(); } for(i=0;i<256;i++) { hist[i]=0; } for(i=0;i<height;i++) { for(j=0;j<width;j++) { k=(long int)rgb1[i][j]; hist[k]=hist[k]+1; } } for(i=0;i<256;i++) { if(hist[i]!=0) tmp++; else continue; } sum_hist=(long int **)calloc(tmp,sizeof(long int*)); for(i=0;i<tmp;i++) sum_hist[i]=(long int *)calloc(2,sizeof(long int)); for(i=0;i<256;i++) { if(hist[i]!=0) { sum_hist[sum][0]=(long int)i; sum_hist[sum][1]=(long int)hist[i]; sum++; } else continue; } for(i=1;i<tmp;i++) sum_hist[i][1]+=sum_hist[i-1][1]; min=sum_hist[0][1]; max=sum_hist[0][1]; for(i=1;i<tmp;i++) { if(min>sum_hist[i][1]) min=sum_hist[i][1]; else continue; } for(i=1;i<tmp;i++) { if(max<sum_hist[i][1]) max=sum_hist[i][1]; else continue; } p=((height*width)-min); for(i=0;i<height;i++) { for(j=0;width;j++) { printf("%d\n",rgb1[i][j]); delay(100); } } for(i=0;i<height;i++) { for(j=0;j<width;j++) { t=rgb1[i][j]; //printf("%d\n",t); //delay(100); for(i=0;i<tmp;i++) { if(sum_hist[i][0]==t) index=sum_hist[i][1]; } index=index-min; rgb1[i][j]=abs(index*255/p); //printf("%d %d\n",t,rgb1[i][j]); //delay(100); } } /*for(i=0;i<height;i++) { for(j=0;j<width;j++) drawdot(first_column+j,last_row-i,rgb1[i][j]); }*/ _close(handle); getch(); _AX=0x1201;_BL=0x33;geninterrupt(0x10);//don't add RGB _AX=0x0003;geninterrupt(0x10);//set mode 3 i.e. 16-color text } In the above code..I have two problems... when assining the value of rgb1[][]..thn if i print the values..it is giving correct results..but if i try to print it outside the block..some garbage values are printed.. and no code is running beyond... Code: for(i=0;i<height;i++) { for(j=0;j<width;j++) { t=rgb1[i][j]; //printf("%d\n",t); //delay(100); for(i=0;i<tmp;i++) { if(sum_hist[i][0]==t) index=sum_hist[i][1]; } index=index-min; rgb1[i][j]=abs(index*255/p); //printf("%d %d\n",t,rgb1[i][j]); //delay(100); }
Hi, I don't think i clearly understand ur issue!. But i see an issue here. You are using(or rather reusing) the variable 'i' in the loop. Code: for(i=0;i<height;i++) { for(j=0;j<width;j++) { t=rgb1[i][j]; //printf("%d\n",t); //delay(100); for(i=0;i<tmp;i++) <<< Here u are using the same variable 'i' as the outer loop. // You could use a new variable like 'inner_i' here. I guess thats what u actually intended to.. { if(sum_hist[i][0]==t) index=sum_hist[i][1]; } index=index-min; rgb1[i][j]=abs(index*255/p); //printf("%d %d\n",t,rgb1[i][j]); //delay(100); }
This is obviously an old (16-bit?) piece of code you are trying to resurrect. Rarely a good idea. You should start fresh or at least find a more modern starting point.
