}
*overlap = 0.33;
break;
+ case WFUNC_DOLPH: {
+ double b = cosh(7.6009022095419887 / (N-1)), sum, t, c, norm = 0;
+ int j;
+ for (c = 1 - 1 / (b*b), n = (N-1) / 2; n >= 0; --n) {
+ for (sum = !n, b = t = j = 1; j <= n && sum != t; b *= (n-j) * (1./j), ++j)
+ t = sum, sum += (b *= c * (N - n - j) * (1./j));
+ sum /= (N - 1 - n), sum /= (norm = norm ? norm : sum);
+ lut[n] = sum;
+ lut[N - 1 - n] = sum;
+ }
+ *overlap = 0.5;}
+ break;
+ case WFUNC_CAUCHY:
+ for (n = 0; n < N; n++) {
+ double x = 2 * ((n / (double)(N - 1)) - .5);
+
+ if (x <= -.5 || x >= .5) {
+ lut[n] = 0;
+ } else {
+ lut[n] = FFMIN(1, fabs(1/(1+4*16*x*x)));
+ }
+ }
+ *overlap = 0.75;
+ break;
+ case WFUNC_PARZEN:
+ for (n = 0; n < N; n++) {
+ double x = 2 * ((n / (double)(N - 1)) - .5);
+
+ if (x > 0.25 && x <= 0.5) {
+ lut[n] = -2 * powf(-1 + 2 * x, 3);
+ } else if (x >= -.5 && x < -.25) {
+ lut[n] = 2 * powf(1 + 2 * x, 3);
+ } else if (x >= -.25 && x < 0) {
+ lut[n] = 1 - 24 * x * x - 48 * x * x * x;
+ } else if (x >= 0 && x <= .25) {
+ lut[n] = 1 - 24 * x * x + 48 * x * x * x;
+ } else {
+ lut[n] = 0;
+ }
+ }
+ *overlap = 0.75;
+ break;
+ case WFUNC_POISSON:
+ for (n = 0; n < N; n++) {
+ double x = 2 * ((n / (double)(N - 1)) - .5);
+
+ if (x >= 0 && x <= .5) {
+ lut[n] = exp(-6*x);
+ } else if (x < 0 && x >= -.5) {
+ lut[n] = exp(6*x);
+ } else {
+ lut[n] = 0;
+ }
+ }
+ *overlap = 0.75;
+ break;
default:
av_assert0(0);
}