101 lines
3.4 KiB
Java
101 lines
3.4 KiB
Java
/*
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* Copyright (c) 1999, 2013, 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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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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package sun.audio;
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import java.io.*;
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import java.util.Arrays;
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import javax.sound.sampled.*;
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/**
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* A clip of audio data. This data can be used to construct an
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* AudioDataStream, which can be played. <p>
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*
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* @author Arthur van Hoff
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* @author Kara Kytle
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* @see AudioDataStream
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* @see AudioPlayer
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*/
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/*
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* the idea here is that the AudioData object encapsulates the
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* data you need to play an audio clip based on a defined set
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* of data. to do this, you require the audio data (a byte
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* array rather than an arbitrary input stream) and a format
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* object.
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*/
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public final class AudioData {
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private static final AudioFormat DEFAULT_FORMAT =
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new AudioFormat(AudioFormat.Encoding.ULAW,
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8000, // sample rate
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8, // sample size in bits
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1, // channels
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1, // frame size in bytes
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8000, // frame rate
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true ); // bigendian (irrelevant for 8-bit data)
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AudioFormat format; // carry forth the format array amusement
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byte buffer[];
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/**
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* Constructor
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*/
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public AudioData(final byte[] buffer) {
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// if we cannot extract valid format information, we resort to assuming
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// the data will be 8k mono u-law in order to provide maximal backwards
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// compatibility....
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this(DEFAULT_FORMAT, buffer);
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// okay, we need to extract the format and the byte buffer of data
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try {
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AudioInputStream ais = AudioSystem.getAudioInputStream(new ByteArrayInputStream(buffer));
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this.format = ais.getFormat();
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ais.close();
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// $$fb 2002-10-27: buffer contains the file header now!
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} catch (IOException e) {
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// use default format
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} catch (UnsupportedAudioFileException e1 ) {
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// use default format
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}
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}
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/**
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* Non-public constructor; this is the one we use in ADS and CADS
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* constructors.
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*/
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AudioData(final AudioFormat format, final byte[] buffer) {
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this.format = format;
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if (buffer != null) {
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this.buffer = Arrays.copyOf(buffer, buffer.length);
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}
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}
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}
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