1 /* 2 * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.media.sound; 27 28 /** 29 * A resampler that uses 0-order (nearest-neighbor) interpolation. 30 * 31 * @author Karl Helgason 32 */ 33 public final class SoftPointResampler extends SoftAbstractResampler { 34 35 @Override 36 public int getPadding() { 37 return 100; 38 } 39 40 @Override 41 public void interpolate(float[] in, float[] in_offset, float in_end, 42 float[] startpitch, float pitchstep, float[] out, int[] out_offset, 43 int out_end) { 44 float pitch = startpitch[0]; 45 float ix = in_offset[0]; 46 int ox = out_offset[0]; 47 float ix_end = in_end; 48 float ox_end = out_end; 49 if (pitchstep == 0) { 50 while (ix < ix_end && ox < ox_end) { 51 out[ox++] = in[(int) ix]; 52 ix += pitch; 53 } 54 } else { 55 while (ix < ix_end && ox < ox_end) { 56 out[ox++] = in[(int) ix]; 57 ix += pitch; 58 pitch += pitchstep; 59 } 60 } 61 in_offset[0] = ix; 62 out_offset[0] = ox; 63 startpitch[0] = pitch; 64 } 65 }