| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.util.Arrays; |
| |
| import javax.sound.sampled.AudioFormat; |
| import javax.sound.sampled.AudioFormat.Encoding; |
| |
| import com.sun.media.sound.AudioFloatConverter; |
| |
| import static javax.sound.sampled.AudioFormat.Encoding.*; |
| |
| /** |
| * @test |
| * @bug 8152501 |
| * @modules java.desktop/com.sun.media.sound |
| */ |
| public final class Bits16ToFromFloatArray { |
| |
| private static final int SIZE = 16; |
| |
| private static final float[] FLOATS = {-1.0f, 0, 1.0f}; |
| |
| private static short MID_U = (short) (Short.MAX_VALUE + 1); |
| private static short MAX_U = -1; |
| |
| // BIG ENDIAN |
| private static final byte[] SIGNED_BIG = { |
| (byte) (Short.MIN_VALUE >> 8), (byte) (Short.MIN_VALUE & 0xff), 0, |
| 0, (byte) (Short.MAX_VALUE >> 8), (byte) (Short.MAX_VALUE & 0xff) |
| }; |
| |
| private static final byte[] UNSIGNED_BIG = { |
| 0, 0, (byte) (MID_U >> 8), (byte) (MID_U & 0xff), |
| (byte) (MAX_U >> 8), (byte) (MAX_U >> 8) |
| }; |
| |
| // LITTLE ENDIAN |
| private static final byte[] SIGNED_LITTLE = { |
| (byte) (Short.MIN_VALUE & 0xff), (byte) (Short.MIN_VALUE >> 8), 0, |
| 0, (byte) (Short.MAX_VALUE & 0xff), (byte) (Short.MAX_VALUE >> 8) |
| }; |
| |
| private static final byte[] UNSIGNED_LITTLE = { |
| 0, 0, (byte) (MID_U & 0xff), (byte) (MID_U >> 8), |
| (byte) (MAX_U >> 8), (byte) (MAX_U >> 8) |
| }; |
| |
| public static void main(final String[] args) { |
| test(PCM_UNSIGNED, UNSIGNED_BIG, true); |
| test(PCM_UNSIGNED, UNSIGNED_LITTLE, false); |
| test(PCM_SIGNED, SIGNED_LITTLE, false); |
| test(PCM_SIGNED, SIGNED_BIG, true); |
| } |
| |
| private static void test(final Encoding enc, final byte[] expected, |
| boolean end) { |
| System.err.println("enc = " + enc); |
| AudioFormat af = new AudioFormat(enc, 44100, SIZE, 1, SIZE / 8, 44100, |
| end); |
| byte[] bytes = new byte[FLOATS.length * af.getFrameSize()]; |
| AudioFloatConverter conv = AudioFloatConverter.getConverter(af); |
| |
| conv.toByteArray(FLOATS, bytes); |
| |
| if (!Arrays.equals(bytes, expected)) { |
| System.err.println("Actual: " + Arrays.toString(bytes)); |
| System.err.println("Expected: " + Arrays.toString(expected)); |
| throw new RuntimeException(); |
| } |
| |
| float[] floats = new float[bytes.length / af.getFrameSize()]; |
| conv.toFloatArray(bytes, floats); |
| |
| if (!Arrays.equals(floats, FLOATS)) { |
| System.err.println("Actual: " + Arrays.toString(floats)); |
| System.err.println("Expected: " + Arrays.toString(FLOATS)); |
| throw new RuntimeException(); |
| } |
| } |
| } |