jdk/test/javax/sound/midi/Gervill/ModelStandardTransform/TransformAbsolute.java
author yan
Tue, 23 Jun 2015 11:59:27 +0300
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permissions -rw-r--r--
8076468: Add @modules to tests in jdk_desktop test group Reviewed-by: yan, alexsch
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/*
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 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/* @test
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   @summary Test ModelStandardTransform transform method
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   @modules java.desktop/com.sun.media.sound
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*/
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import com.sun.media.sound.ModelStandardTransform;
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public class TransformAbsolute {
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    private static boolean checkLinearity(ModelStandardTransform transform)
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    {
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        double lastx = 0;
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        for (int p = 0; p < 2; p++)
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        for (int d = 0; d < 2; d++)
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        for (double i = 0; i < 1.0; i+=0.001) {
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            if(p == 0)
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                transform.setPolarity(ModelStandardTransform.POLARITY_UNIPOLAR);
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            else
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                transform.setPolarity(ModelStandardTransform.POLARITY_BIPOLAR);
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            if(d == 0)
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                transform.setDirection(ModelStandardTransform.DIRECTION_MIN2MAX);
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            else
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                transform.setDirection(ModelStandardTransform.DIRECTION_MAX2MIN);
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            double x = transform.transform(i);
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            if(i == 0)
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                lastx = x;
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            else
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            {
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                if(lastx - x > 0.2) return false;
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                lastx = x;
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            }
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        }
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        return true;
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    }
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    private static void assertTrue(boolean value) throws Exception
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    {
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        if(!value)
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            throw new RuntimeException("assertTrue fails!");
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    }
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    public static void main(String[] args) throws Exception {
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        ModelStandardTransform transform = new ModelStandardTransform();
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        transform.setTransform(ModelStandardTransform.TRANSFORM_ABSOLUTE);
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        assertTrue(Math.abs(transform.transform(0.2f) - 0.2f) < 0.0001f);
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        assertTrue(Math.abs(transform.transform(-0.8f) - 0.8f) < 0.0001f);
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        assertTrue(checkLinearity(transform));
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    }
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}