1/* 2 * Copyright (c) 2007, 2015, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* @test 25 @summary Test ModelStandardTransform transform method 26 @modules java.desktop/com.sun.media.sound 27*/ 28 29import com.sun.media.sound.ModelStandardTransform; 30 31public class TransformConcave { 32 33 private static boolean checkLinearity(ModelStandardTransform transform) 34 { 35 double lastx = 0; 36 for (int p = 0; p < 2; p++) 37 for (int d = 0; d < 2; d++) 38 for (double i = 0; i < 1.0; i+=0.001) { 39 if(p == 0) 40 transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR); 41 else 42 transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR); 43 if(d == 0) 44 transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX); 45 else 46 transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN); 47 double x = transform.transform(i); 48 if(i == 0) 49 lastx = x; 50 else 51 { 52 if(lastx - x > 0.2) return false; 53 lastx = x; 54 } 55 } 56 return true; 57 } 58 59 private static void assertTrue(boolean value) throws Exception 60 { 61 if(!value) 62 throw new RuntimeException("assertTrue fails!"); 63 } 64 65 public static void main(String[] args) throws Exception { 66 ModelStandardTransform transform = new ModelStandardTransform(); 67 transform.setTransform(ModelStandardTransform.TRANSFORM_CONCAVE); 68 assertTrue(checkLinearity(transform)); 69 70 transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX); 71 transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR); 72 assertTrue(Math.abs(transform.transform(0.0f) - 0.0f) < 0.0001f); 73 assertTrue(transform.transform(0.5f) < 0.5f); 74 assertTrue(Math.abs(transform.transform(1.0f) - 1.0f) < 0.0001f); 75 76 transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN); 77 transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR); 78 assertTrue(Math.abs(transform.transform(1.0f) - 0.0f) < 0.0001f); 79 assertTrue(transform.transform(0.5f) < 0.5f); 80 assertTrue(Math.abs(transform.transform(0.0f) - 1.0f) < 0.0001f); 81 82 transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX); 83 transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR); 84 assertTrue(Math.abs(transform.transform(0.0f) + 1.0f) < 0.0001f); 85 assertTrue(transform.transform(0.25f) > -0.5f); 86 assertTrue(Math.abs(transform.transform(0.5f) - 0.0f) < 0.0001f); 87 assertTrue(transform.transform(0.75f) < 0.5f); 88 assertTrue(Math.abs(transform.transform(1.0f) - 1.0f) < 0.0001f); 89 90 transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN); 91 transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR); 92 assertTrue(Math.abs(transform.transform(1.0f) + 1.0f) < 0.0001f); 93 assertTrue(transform.transform(0.75f) > -0.5f); 94 assertTrue(Math.abs(transform.transform(0.50f) - 0.0f) < 0.0001f); 95 assertTrue(transform.transform(0.25f) < 0.5f); 96 assertTrue(Math.abs(transform.transform(0.0f) - 1.0f) < 0.0001f); 97 } 98} 99