1 /* 2 * Copyright (c) 2009, 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 /* @test 27 @summary Test SoftLowFrequencyOscillator processControlLogic method */ 28 29 import com.sun.media.sound.AudioSynthesizerPropertyInfo; 30 import com.sun.media.sound.SoftLowFrequencyOscillator; 31 import com.sun.media.sound.SoftSynthesizer; 32 33 public class TestProcessControlLogic { 34 35 private static float control_rate = 147f; 36 private static SoftSynthesizer synth = new SoftSynthesizer(); 37 private static SoftLowFrequencyOscillator lfo = new SoftLowFrequencyOscillator(); 38 39 private static void testLFO(boolean shared, int instance, float freq, float delay, 40 float delay2) throws Exception { 41 SoftLowFrequencyOscillator lfo = 42 shared?TestProcessControlLogic.lfo:new SoftLowFrequencyOscillator(); 43 lfo.reset(); 44 double[] lfo_freq = lfo.get(instance, "freq"); 45 double[] lfo_delay = lfo.get(instance, "delay"); 46 double[] lfo_delay2 = lfo.get(instance, "delay2"); 47 double[] lfo_output = lfo.get(instance, null); 48 lfo_freq[0] = freq; 49 lfo_delay[0] = delay; 50 lfo_delay2[0] = delay2; 51 lfo.init(synth); 52 53 // For delayCount amount time, the output LFO should be 0.5 54 int delayCount = (int) ((Math.pow(2, delay / 1200.0) * control_rate)); 55 delayCount += (int) ((delay2 * control_rate) / 1000.0); 56 for (int i = 0; i < delayCount; i++) { 57 if (Math.abs(0.5 - lfo_output[0]) > 0.000001) 58 throw new Exception("Incorrect LFO output (" 59 +"0.5 != "+lfo_output[0]+")!"); 60 lfo.processControlLogic(); 61 } 62 63 // After the delay the LFO should start oscillate 64 // Let make sure output is accurate enough 65 double p_step = (440.0 / control_rate) 66 * Math.exp((freq - 6900.0) * (Math.log(2) / 1200.0)); 67 double p = 0; 68 for (int i = 0; i < 30; i++) { 69 p += p_step; 70 double predicted_output = 0.5 + Math.sin(p * 2 * Math.PI) * 0.5; 71 if (Math.abs(predicted_output - lfo_output[0]) > 0.001) 72 throw new Exception("Incorrect LFO output (" 73 +predicted_output+" != "+lfo_output[0]+")!"); 74 lfo.processControlLogic(); 75 } 76 77 } 78 79 public static void main(String[] args) throws Exception { 80 81 // Get default control rate from synthesizer 82 AudioSynthesizerPropertyInfo[] p = synth.getPropertyInfo(null); 83 for (int i = 0; i < p.length; i++) { 84 if (p[i].name.equals("control rate")) { 85 control_rate = ((Float) p[i].value).floatValue(); 86 break; 87 } 88 } 89 90 // Test LFO under various configurations 91 for (int instance = 0; instance < 3; instance++) 92 for (int d1 = -3000; d1 < 0; d1 += 1000) 93 for (int d2 = 0; d2 < 5000; d2 += 1000) 94 for (int fr = -1000; fr < 1000; fr += 100) { 95 testLFO(true, instance, 96 (fr == -1000) ? Float.NEGATIVE_INFINITY : fr, 97 (d1 == -3000) ? Float.NEGATIVE_INFINITY : d1, 98 d2); 99 testLFO(false, instance, 100 (fr == -1000) ? Float.NEGATIVE_INFINITY : fr, 101 (d1 == -3000) ? Float.NEGATIVE_INFINITY : d1, 102 d2); 103 } 104 105 } 106 }