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);
}