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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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*
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package javax.sound.sampled.spi;
import java.io.File;
import java.io.InputStream;
import java.io.IOException;
import java.net.URL;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.UnsupportedAudioFileException;
/**
* Provider for audio file reading services. Classes providing concrete
* implementations can parse the format information from one or more types of
* audio file, and can produce audio input streams from files of these types.
*
* @author Kara Kytle
* @since 1.3
*/
public abstract class AudioFileReader {
/**
* Obtains the audio file format of the input stream provided. The stream must
* point to valid audio file data. In general, audio file readers may
* need to read some data from the stream before determining whether they
* support it. These parsers must
* be able to mark the stream, read enough data to determine whether they
* support the stream, and, if not, reset the stream's read pointer to its original
* position. If the input stream does not support this, this method may fail
* with an <code>IOException</code>.
* @param stream the input stream from which file format information should be
* extracted
* @return an <code>AudioFileFormat</code> object describing the audio file format
* @throws UnsupportedAudioFileException if the stream does not point to valid audio
* file data recognized by the system
* @throws IOException if an I/O exception occurs
* @see InputStream#markSupported
* @see InputStream#mark
*/
public abstract AudioFileFormat getAudioFileFormat(InputStream stream) throws UnsupportedAudioFileException, IOException;
/**
* Obtains the audio file format of the URL provided. The URL must
* point to valid audio file data.
* @param url the URL from which file format information should be
* extracted
* @return an <code>AudioFileFormat</code> object describing the audio file format
* @throws UnsupportedAudioFileException if the URL does not point to valid audio
* file data recognized by the system
* @throws IOException if an I/O exception occurs
*/
public abstract AudioFileFormat getAudioFileFormat(URL url) throws UnsupportedAudioFileException, IOException;
/**
* Obtains the audio file format of the <code>File</code> provided. The <code>File</code> must
* point to valid audio file data.
* @param file the <code>File</code> from which file format information should be
* extracted
* @return an <code>AudioFileFormat</code> object describing the audio file format
* @throws UnsupportedAudioFileException if the <code>File</code> does not point to valid audio
* file data recognized by the system
* @throws IOException if an I/O exception occurs
*/
public abstract AudioFileFormat getAudioFileFormat(File file) throws UnsupportedAudioFileException, IOException;
/**
* Obtains an audio input stream from the input stream provided. The stream must
* point to valid audio file data. In general, audio file readers may
* need to read some data from the stream before determining whether they
* support it. These parsers must
* be able to mark the stream, read enough data to determine whether they
* support the stream, and, if not, reset the stream's read pointer to its original
* position. If the input stream does not support this, this method may fail
* with an <code>IOException</code>.
* @param stream the input stream from which the <code>AudioInputStream</code> should be
* constructed
* @return an <code>AudioInputStream</code> object based on the audio file data contained
* in the input stream.
* @throws UnsupportedAudioFileException if the stream does not point to valid audio
* file data recognized by the system
* @throws IOException if an I/O exception occurs
* @see InputStream#markSupported
* @see InputStream#mark
*/
public abstract AudioInputStream getAudioInputStream(InputStream stream) throws UnsupportedAudioFileException, IOException;
/**
* Obtains an audio input stream from the URL provided. The URL must
* point to valid audio file data.
* @param url the URL for which the <code>AudioInputStream</code> should be
* constructed
* @return an <code>AudioInputStream</code> object based on the audio file data pointed
* to by the URL
* @throws UnsupportedAudioFileException if the URL does not point to valid audio
* file data recognized by the system
* @throws IOException if an I/O exception occurs
*/
public abstract AudioInputStream getAudioInputStream(URL url) throws UnsupportedAudioFileException, IOException;
/**
* Obtains an audio input stream from the <code>File</code> provided. The <code>File</code> must
* point to valid audio file data.
* @param file the <code>File</code> for which the <code>AudioInputStream</code> should be
* constructed
* @return an <code>AudioInputStream</code> object based on the audio file data pointed
* to by the File
* @throws UnsupportedAudioFileException if the <code>File</code> does not point to valid audio
* file data recognized by the system
* @throws IOException if an I/O exception occurs
*/
public abstract AudioInputStream getAudioInputStream(File file) throws UnsupportedAudioFileException, IOException;
}