/*
This file is part of jpcsp.
Jpcsp is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Jpcsp is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Jpcsp. If not, see <http://www.gnu.org/licenses/>.
*/
package jpcsp.media.codec.util;
public class SineWin {
public static final float[] ff_sine_64 = new float[ 64];
public static final float[] ff_sine_128 = new float[ 128];
public static final float[] ff_sine_512 = new float[ 512];
public static final float[] ff_sine_1024 = new float[1024];
private static void sineWindowInit(float[] window) {
int n = window.length;
for (int i = 0; i < n; i++) {
window[i] = (float) Math.sin((i + 0.5) * (Math.PI / (2.0 * n)));
}
}
public static void initFfSineWindows() {
sineWindowInit(ff_sine_64 );
sineWindowInit(ff_sine_128);
sineWindowInit(ff_sine_512);
sineWindowInit(ff_sine_1024);
}
}