[调查]Crop&Resize方案|『影音数码技术学习交流』 - 『漫游』酷论坛

#include
#include
#include
struct solution
{
int hcrop, vcrop;
double ae, absae;
};
solution * sol[625];
int recount = 0;
void usort()
{
int i, j;
solution * temp1;
for(i = 0; i < recount - 1; i++)
for(j = 0; j < recount - i - 1; j++)
if(sol[j]->absae > sol[j+1]->absae)
{
temp1 = sol[j];
sol[j] = sol[j+1];
sol[j+1] = temp1;
}
}
void freeall()
{
int i;
for(i = 0; i < recount; i++)
free(sol[recount]);
recount = 0;
}
int main()
{
int mode, ar, hrev, vrev, hcrop, vcrop, srange, output, c=720, d, k, l, i;
double maxae, factor2, aa, bb, cc, dd; //Ahhh~, i hate these variable names!!!
char filename[200];
FILE * fp;
puts(" Crop & Resize Calculator @ C++");
puts(" by MR, v 0.1\n");
printf("制式\t\t1 - NTSC\t2 - PAL:");
scanf("%d", &mode);
printf("屏幕比例\t1 - 16:9\t2 - 4:3:");
scanf("%d", &ar);
printf("Target 横向分辨率:");
scanf("%d", &hrev);
printf("Target 纵向分辨率:");
scanf("%d", &vrev);
printf("横向最小切边(默认0):");
scanf("%d", &hcrop);
printf("纵向最小切边(默认0):");
scanf("%d", &vcrop);
printf("切边搜寻范围(建议20以内):");
scanf("%d", &srange);
printf("最大可接受AE(0 - 默认1.0):");
scanf("%lf", &maxae);
printf("输出过滤\t1 - All\t2 - Even number crop only:");
scanf("%d", &output);
getchar();
if(maxae < 1e-6)
maxae = 1.0;
if(srange < 0)
srange = 10;
if(mode == 1)
d = 480;
else
d = 576;
if(ar == 1)
factor2 = 0.75;
else
factor2 = 1.0;
bb = (double)hrev / (double)vrev;
for(k = hcrop; k < hcrop + srange; k++)
{
for(l = vcrop; l < vcrop + srange; l++)
{
// NTSC计算公式
if (mode == 1)
aa = ((c - k) * 72. / 79) / ((d - l) * factor2);
// PAL计算公式
else
aa = ((c - k) * 128. / 117) / ((d - l) * factor2);
cc = aa / bb - 1;
dd = fabs(cc);
if(dd < maxae && (output == 1 || output == 2 && k % 2 == 0 && l % 2 == 0))
{
sol[recount] = (solution*)malloc(sizeof(solution));
sol[recount] -> hcrop = k;
sol[recount] -> vcrop = l;
sol[recount] -> ae = cc;
sol[recount] -> absae = dd;
recount++;
}
}
}
usort();
printf("Write to file(ENTER to print on screen):");
gets(filename);
if(filename[0] != 0)
{
// to file
fp = fopen(filename, "w");
fputs("H-Crop,V-Crop,AspectError,Abs AspectError\n", fp);
for(i = 0; i < recount; i++)
fprintf(fp, "%d,%d,%.8lf,%.8lf\n", sol[i]->hcrop, sol[i]->vcrop, sol[i]->ae, sol[i]->absae);
fclose(fp);
puts("Written to file.");
}
else
{
puts("H-Crop\tV-Crop\t Aspect Error\tAbs AspectError");
for(i = 0; i < recount; i++)
printf("%3d\t%3d\t%12.8lf\t%13.8lf\n", sol[i]->hcrop, sol[i]->vcrop, sol[i]->ae, sol[i]->absae);
}
freeall();
printf("Press enter key to exit...");
getchar();
}