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 package com.sun.media.sound; 26 27 /** 28 * A resampler that uses 0-order (nearest-neighbor) interpolation. 29 * 30 * @author Karl Helgason 31 */ 32 public final class SoftPointResampler extends SoftAbstractResampler { 33 34 public int getPadding() { 35 return 100; 36 } 37 38 public void interpolate(float[] in, float[] in_offset, float in_end, 39 float[] startpitch, float pitchstep, float[] out, int[] out_offset, 40 int out_end) { 41 float pitch = startpitch[0]; 42 float ix = in_offset[0]; 43 int ox = out_offset[0]; 44 float ix_end = in_end; 45 float ox_end = out_end; 46 if (pitchstep == 0) { 47 while (ix < ix_end && ox < ox_end) { 48 out[ox++] = in[(int) ix]; 49 ix += pitch; 50 } 51 } else { 52 while (ix < ix_end && ox < ox_end) { 53 out[ox++] = in[(int) ix]; 54 ix += pitch; 55 pitch += pitchstep; 56 } 57 } 58 in_offset[0] = ix; 59 out_offset[0] = ox; 60 startpitch[0] = pitch; 61 62 } 63 }