120 lines
4.5 KiB
Java
120 lines
4.5 KiB
Java
/*
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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 ModelByteBufferWavetable set8BitExtensionBuffer method
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@modules java.desktop/com.sun.media.sound
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*/
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import java.io.ByteArrayOutputStream;
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import javax.sound.sampled.*;
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import com.sun.media.sound.*;
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public class Set8BitExtensionBuffer {
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static float[] testarray;
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static byte[] test_byte_array;
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static byte[] test_byte_array_8ext;
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static AudioFormat format = new AudioFormat(44100, 16, 1, true, false);
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static AudioFormat format24 = new AudioFormat(44100, 24, 1, true, false);
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static ModelByteBuffer buffer;
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static ModelByteBuffer buffer_wave;
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static ModelByteBuffer buffer8;
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static ModelByteBuffer buffer16_8;
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static ModelByteBuffer buffer24;
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static void setUp() throws Exception {
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testarray = new float[1024];
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for (int i = 0; i < 1024; i++) {
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double ii = i / 1024.0;
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ii = ii * ii;
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testarray[i] = (float)Math.sin(10*ii*2*Math.PI);
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testarray[i] += (float)Math.sin(1.731 + 2*ii*2*Math.PI);
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testarray[i] += (float)Math.sin(0.231 + 6.3*ii*2*Math.PI);
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testarray[i] *= 0.3;
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}
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test_byte_array = new byte[testarray.length*2];
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AudioFloatConverter.getConverter(format).toByteArray(testarray, test_byte_array);
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buffer = new ModelByteBuffer(test_byte_array);
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byte[] test_byte_array2 = new byte[testarray.length*3];
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buffer24 = new ModelByteBuffer(test_byte_array2);
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test_byte_array_8ext = new byte[testarray.length];
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byte[] test_byte_array_8_16 = new byte[testarray.length*2];
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AudioFloatConverter.getConverter(format24).toByteArray(testarray, test_byte_array2);
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int ix = 0;
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int x = 0;
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for (int i = 0; i < test_byte_array_8ext.length; i++) {
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test_byte_array_8ext[i] = test_byte_array2[ix++];
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test_byte_array_8_16[x++] = test_byte_array2[ix++];
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test_byte_array_8_16[x++] = test_byte_array2[ix++];
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}
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buffer16_8 = new ModelByteBuffer(test_byte_array_8_16);
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buffer8 = new ModelByteBuffer(test_byte_array_8ext);
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AudioInputStream ais = new AudioInputStream(buffer.getInputStream(), format, testarray.length);
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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AudioSystem.write(ais, AudioFileFormat.Type.WAVE, baos);
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buffer_wave = new ModelByteBuffer(baos.toByteArray());
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}
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static float compare(float[] a, float[] b)
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{
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float ac_error = 0;
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int counter = 0;
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for (int i = 0; i < a.length; i++) {
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ac_error += Math.abs(a[i] - b[i]);
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counter++;
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}
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return ac_error / ((float)counter);
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}
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public static void main(String[] args) throws Exception {
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setUp();
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ModelByteBufferWavetable wavetable = new ModelByteBufferWavetable(buffer16_8,format,10f);
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float[] f1 = new float[testarray.length];
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float[] f2 = new float[testarray.length];
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wavetable.openStream().read(f1);
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wavetable.set8BitExtensionBuffer(buffer8);
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if(wavetable.get8BitExtensionBuffer() != buffer8)
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throw new RuntimeException("wavetable.get8BitExtensionBuffer() incorrect!");
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wavetable.openStream().read(f2);
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// f2 should have more accurity than f1,
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// about 256 times more, or 8 bits
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float spec1 = compare(f1, testarray);
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float spec2 = compare(f2, testarray);
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if((spec1/spec2) <= 200)
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throw new RuntimeException("(spec1/spec2) <= 200!");
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}
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}
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