1172N/A/*
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2362N/A * by Oracle in the LICENSE file that accompanied this code.
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1172N/A * This code is distributed in the hope that it will be useful, but WITHOUT
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1172N/A * version 2 for more details (a copy is included in the LICENSE file that
1172N/A * accompanied this code).
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1172N/A * You should have received a copy of the GNU General Public License version
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1172N/A */
1172N/A
1172N/A/* @test
1172N/A @summary Test SoftLowFrequencyOscillator processControlLogic method */
1172N/A
1172N/Aimport com.sun.media.sound.AudioSynthesizerPropertyInfo;
1172N/Aimport com.sun.media.sound.SoftLowFrequencyOscillator;
1172N/Aimport com.sun.media.sound.SoftSynthesizer;
1172N/A
1172N/Apublic class TestProcessControlLogic {
1172N/A
1172N/A private static float control_rate = 147f;
1172N/A private static SoftSynthesizer synth = new SoftSynthesizer();
1172N/A private static SoftLowFrequencyOscillator lfo = new SoftLowFrequencyOscillator();
1172N/A
1172N/A private static void testLFO(boolean shared, int instance, float freq, float delay,
1172N/A float delay2) throws Exception {
1172N/A SoftLowFrequencyOscillator lfo =
1172N/A shared?TestProcessControlLogic.lfo:new SoftLowFrequencyOscillator();
1172N/A lfo.reset();
1172N/A double[] lfo_freq = lfo.get(instance, "freq");
1172N/A double[] lfo_delay = lfo.get(instance, "delay");
1172N/A double[] lfo_delay2 = lfo.get(instance, "delay2");
1172N/A double[] lfo_output = lfo.get(instance, null);
1172N/A lfo_freq[0] = freq;
1172N/A lfo_delay[0] = delay;
1172N/A lfo_delay2[0] = delay2;
1172N/A lfo.init(synth);
1172N/A
1172N/A // For delayCount amount time, the output LFO should be 0.5
1172N/A int delayCount = (int) ((Math.pow(2, delay / 1200.0) * control_rate));
1172N/A delayCount += (int) ((delay2 * control_rate) / 1000.0);
1172N/A for (int i = 0; i < delayCount; i++) {
1172N/A if (Math.abs(0.5 - lfo_output[0]) > 0.000001)
1172N/A throw new Exception("Incorrect LFO output ("
1172N/A +"0.5 != "+lfo_output[0]+")!");
1172N/A lfo.processControlLogic();
1172N/A }
1172N/A
1172N/A // After the delay the LFO should start oscillate
1172N/A // Let make sure output is accurate enough
1172N/A double p_step = (440.0 / control_rate)
1172N/A * Math.exp((freq - 6900.0) * (Math.log(2) / 1200.0));
1172N/A double p = 0;
1172N/A for (int i = 0; i < 30; i++) {
1172N/A p += p_step;
1172N/A double predicted_output = 0.5 + Math.sin(p * 2 * Math.PI) * 0.5;
1172N/A if (Math.abs(predicted_output - lfo_output[0]) > 0.001)
1172N/A throw new Exception("Incorrect LFO output ("
1172N/A +predicted_output+" != "+lfo_output[0]+")!");
1172N/A lfo.processControlLogic();
1172N/A }
1172N/A
1172N/A }
1172N/A
1172N/A public static void main(String[] args) throws Exception {
1172N/A
1172N/A // Get default control rate from synthesizer
1172N/A AudioSynthesizerPropertyInfo[] p = synth.getPropertyInfo(null);
1172N/A for (int i = 0; i < p.length; i++) {
1172N/A if (p[i].name.equals("control rate")) {
1172N/A control_rate = ((Float) p[i].value).floatValue();
1172N/A break;
1172N/A }
1172N/A }
1172N/A
1172N/A // Test LFO under various configurations
1172N/A for (int instance = 0; instance < 3; instance++)
1172N/A for (int d1 = -3000; d1 < 0; d1 += 1000)
1172N/A for (int d2 = 0; d2 < 5000; d2 += 1000)
1172N/A for (int fr = -1000; fr < 1000; fr += 100) {
1172N/A testLFO(true, instance,
1172N/A (fr == -1000) ? Float.NEGATIVE_INFINITY : fr,
1172N/A (d1 == -3000) ? Float.NEGATIVE_INFINITY : d1,
1172N/A d2);
1172N/A testLFO(false, instance,
1172N/A (fr == -1000) ? Float.NEGATIVE_INFINITY : fr,
1172N/A (d1 == -3000) ? Float.NEGATIVE_INFINITY : d1,
1172N/A d2);
1172N/A }
1172N/A
1172N/A }
1172N/A}