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