131 lines
4.8 KiB
Java
131 lines
4.8 KiB
Java
/*
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* Copyright (c) 2016, 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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import java.util.Arrays;
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import javax.sound.sampled.AudioFormat;
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import javax.sound.sampled.AudioFormat.Encoding;
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import com.sun.media.sound.AudioFloatConverter;
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import static javax.sound.sampled.AudioFormat.Encoding.PCM_SIGNED;
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import static javax.sound.sampled.AudioFormat.Encoding.PCM_UNSIGNED;
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/**
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* @test
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* @bug 8152501
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* @modules java.desktop/com.sun.media.sound
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*/
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public final class Bits32ToFromFloatArray {
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private static final int SIZE = 32;
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private static final float[] FLOATS = {-1.0f, 0, 1.0f};
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private static int MID_U = (int) (Integer.MAX_VALUE + 1);
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private static int MAX_U = -1;
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// BIG ENDIAN
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private static final byte[] SIGNED_BIG = {
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(byte) ((Integer.MIN_VALUE >> 24) & 0xff),
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(byte) ((Integer.MIN_VALUE >> 16) & 0xff),
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(byte) ((Integer.MIN_VALUE >> 8) & 0xff),
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(byte) ((Integer.MIN_VALUE >> 0) & 0xff),
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0, 0, 0, 0,
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(byte) ((Integer.MAX_VALUE >> 24) & 0xff),
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(byte) ((Integer.MAX_VALUE >> 16) & 0xff),
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(byte) ((Integer.MAX_VALUE >> 8) & 0xff),
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(byte) ((Integer.MAX_VALUE >> 0) & 0xff),
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};
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private static final byte[] UNSIGNED_BIG = {
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0, 0, 0, 0,
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(byte) ((MID_U >> 24) & 0xff),
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(byte) ((MID_U >> 16) & 0xff),
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(byte) ((MID_U >> 8) & 0xff),
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(byte) ((MID_U >> 0) & 0xff),
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(byte) ((MAX_U >> 24) & 0xff),
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(byte) ((MAX_U >> 16) & 0xff),
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(byte) ((MAX_U >> 8) & 0xff),
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(byte) ((MAX_U >> 0) & 0xff),
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};
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// LITTLE ENDIAN
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private static final byte[] SIGNED_LITTLE = {
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(byte) ((Integer.MIN_VALUE >> 0) & 0xff),
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(byte) ((Integer.MIN_VALUE >> 8) & 0xff),
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(byte) ((Integer.MIN_VALUE >> 16) & 0xff),
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(byte) ((Integer.MIN_VALUE >> 24) & 0xff),
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0, 0, 0, 0,
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(byte) ((Integer.MAX_VALUE >> 0) & 0xff),
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(byte) ((Integer.MAX_VALUE >> 8) & 0xff),
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(byte) ((Integer.MAX_VALUE >> 16) & 0xff),
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(byte) ((Integer.MAX_VALUE >> 24) & 0xff),
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};
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private static final byte[] UNSIGNED_LITTLE = {
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0, 0, 0, 0,
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(byte) ((MID_U >> 0) & 0xff),
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(byte) ((MID_U >> 8) & 0xff),
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(byte) ((MID_U >> 16) & 0xff),
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(byte) ((MID_U >> 24) & 0xff),
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(byte) ((MAX_U >> 0) & 0xff),
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(byte) ((MAX_U >> 8) & 0xff),
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(byte) ((MAX_U >> 16) & 0xff),
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(byte) ((MAX_U >> 24) & 0xff),
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};
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public static void main(final String[] args) {
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test(PCM_UNSIGNED, UNSIGNED_BIG, true);
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test(PCM_UNSIGNED, UNSIGNED_LITTLE, false);
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test(PCM_SIGNED, SIGNED_LITTLE, false);
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test(PCM_SIGNED, SIGNED_BIG, true);
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}
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private static void test(final Encoding enc, final byte[] expected,
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boolean end) {
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AudioFormat af = new AudioFormat(enc, 44100, SIZE, 1, SIZE / 8, 44100,
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end);
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byte[] bytes = new byte[FLOATS.length * af.getFrameSize()];
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AudioFloatConverter conv = AudioFloatConverter.getConverter(af);
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conv.toByteArray(FLOATS, bytes);
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if (!Arrays.equals(bytes, expected)) {
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System.err.println("Actual: " + Arrays.toString(bytes));
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System.err.println("Expected: " + Arrays.toString(expected));
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throw new RuntimeException();
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}
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float[] floats = new float[bytes.length / af.getFrameSize()];
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conv.toFloatArray(bytes, floats);
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if (!Arrays.equals(floats, FLOATS)) {
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System.err.println("Actual: " + Arrays.toString(floats));
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System.err.println("Expected: " + Arrays.toString(FLOATS));
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throw new RuntimeException();
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}
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}
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}
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