image reading

neeti (2)
hi!!
this is the part of a code on which i m working and image is read in .pcx format.if i already define rows and coloums then it reads the image but if i use this command (fscanf(f,"%d %d",&cols,&rows);)then it just stuck up.so plzz help me out wid dis code!!







#include <stdio.h>
#include <math.h>
#include <alloc.h>
#include <mem.h>
#include <dos.h>
#include <conio.h>
#include <process.h>
#include <time.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

#include "oct1.h"



int SaveAsPCX(FILE *fimg,
OctreeType *octree,
int resx,
int resy,
double nrgbr,
double nrgbg,
double nrgbb,
int npal,
RGBType *colortable);

int npal = 256;

void main(int argc, char *argv[])
{
double r, g, b;
uint rows, cols;
char fname[256];
double colormag;
time_t tstart, tend;
int nrgbr = 63, nrgbg = 63, nrgbb = 63;
OctreeType *octree;
RGBType color;
FILE *f;
char title[40];
char description[128];
ulong i;
uint j;
int n;
RGBType palette[256];
ulong image_start;
union REGS regs;
int resx, resy;
int px, py;
int ii;
int cols2, rows2;
int k;
int cli;
int maxr=0, maxg=0, maxb=0;


printf("Image file : ");
scanf("%s",fname);
if ((f = fopen(fname,"rb")) == NULL) {
printf("%s not found.\n",fname);
exit(1);
}

/*
** Read the image file header
*/
fgets(title,40,f);
fgets(description,128,f);
fscanf(f,"%d %d",&cols,&rows);
fscanf(f,"%lf",&colormag);
image_start = ftell(f);

cols2 = cols/2;
rows2 = rows/2;
time(&tstart);

/*
** Initialize the color octree
*/
octree = CreateOctNode(0);

/*
** Loop through the image and store each unique color.
*/
for (i = 0L; i < (ulong)rows*(ulong)cols; i++) {
/*
** Show progress...
*/
if ((i % (ulong)cols) == 0L) printf("%ld\r",i/cols);

fscanf(f,"%lf %lf %lf",&r,&g,&b);

color.r = (unsigned char)(r * nrgbr);
color.g = (unsigned char)(g * nrgbg);
color.b = (unsigned char)(b * nrgbb);
if (color.r > nrgbr) color.r = nrgbr;
if (color.g > nrgbg) color.g = nrgbg;
if (color.b > nrgbb) color.b = nrgbb;

/*
** Insert this color into the octree
*/
InsertTree(&octree, &color, 0);

/*
** If there are too many colors in the tree as a result of this
** insert, reduce the octree
*/
while (TotalLeafNodes() > npal) {
ReduceTree();
}
}

/*
** Make a pass through the completed octree to average down the
** rgb components. When done, 'n' contains the actual number of
** colors in the palette table.
*/
n = 0;
MakePaletteTable(octree, palette, &n);

/*
** How long did it take?
*/
time(&tend);
printf("Processed %ld pixels per second\ninto %d quantized colors\n",
((long)rows*(long)cols)/(tend-tstart), n);

j = 0;
while (j != 3) {
printf("Output to (1)monitor or (2).PCX file or (3) quit: ");
scanf("%s",title);
j = atoi(title);
if (j == 2) {
fseek(f,image_start,0);
SaveAsPCX(f, octree, cols, rows, nrgbr, nrgbg, nrgbb, npal, palette);
}
}
}

Zaita (2770)
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