107 lines
4.3 KiB
Java
107 lines
4.3 KiB
Java
/*
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* Copyright (c) 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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import java.io.ByteArrayInputStream;
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import javax.sound.sampled.AudioFormat;
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import javax.sound.sampled.AudioFormat.Encoding;
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import javax.sound.sampled.AudioInputStream;
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import javax.sound.sampled.AudioSystem;
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/**
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* @test
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* @bug 6459818
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* @summary Audio A-law and law decoder skip() method not implemented
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* @author Klaus Jaensch
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*/
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public class SkipOnConvertSampleSize {
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private static final int TEST_FRAME_LENGTH = 20000;
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private static void testskipping(final Encoding encoding) throws Exception {
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// create temporary PCM_SIGNED audio file
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int pcmBufSize = TEST_FRAME_LENGTH * 2;
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byte[] tempAudioBuf = new byte[pcmBufSize];
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for (int i = 0; i < TEST_FRAME_LENGTH; i++) {
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// fill with noise
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tempAudioBuf[i * 2] = (byte) ((Math.random() - 1) * Byte.MAX_VALUE);
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tempAudioBuf[i * 2 + 1] = (byte) ((Math.random() - 1)
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* Byte.MAX_VALUE);
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}
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final ByteArrayInputStream bis = new ByteArrayInputStream(tempAudioBuf);
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AudioFormat format = new AudioFormat(8000, 16, 1, true, false);
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final AudioInputStream testAis = new AudioInputStream(bis, format,
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TEST_FRAME_LENGTH);
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final AudioFormat lawFormat;
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final byte[] alawAudioBuf;
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try (AudioInputStream lawStream = AudioSystem.getAudioInputStream(
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encoding, testAis)) {
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lawFormat = lawStream.getFormat();
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int alawFrameSize = lawFormat.getFrameSize();
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int lawBufSize = TEST_FRAME_LENGTH * alawFrameSize;
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alawAudioBuf = new byte[lawBufSize];
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int r1 = 0;
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int totalRead = 0;
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while ((r1 = lawStream.read(alawAudioBuf, totalRead,
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lawBufSize - totalRead)) != -1) {
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totalRead += r1;
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}
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}
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// Convert back to PCM
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ByteArrayInputStream alawBis = new ByteArrayInputStream(alawAudioBuf);
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AudioInputStream lawAis = new AudioInputStream(alawBis, lawFormat,
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TEST_FRAME_LENGTH);
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try (AudioInputStream convPcmStream = AudioSystem.getAudioInputStream(
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Encoding.PCM_SIGNED, lawAis)) {
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final AudioFormat convPcmAudioFormat = convPcmStream.getFormat();
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final int convPcmFrameSize = convPcmAudioFormat.getFrameSize();
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// skip half of the stream
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final long toSkip = (TEST_FRAME_LENGTH / 2) * convPcmFrameSize;
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long skipped = 0;
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do {
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skipped += convPcmStream.skip(toSkip - skipped);
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} while (skipped < toSkip);
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int r2 = convPcmStream.read(new byte[convPcmFrameSize]);
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// if skip is not correctly implemented we are at the end of the
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// stream
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if (r2 == -1) {
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throw new RuntimeException(
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"Skip method of decoder not correctly implemented!");
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}
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// otherwise we could read the rest ...
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// we don't do it here
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}
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}
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public static void main(final String[] args) throws Exception {
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testskipping(Encoding.ALAW);
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testskipping(Encoding.ULAW);
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}
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}
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