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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [javax/] [sound/] [sampled/] [spi/] [AudioFileReader.java] - Blame information for rev 772

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1 772 jeremybenn
/* Audio file reader API
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   Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING.  If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library.  Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module.  An independent module is a module which is not derived from
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or based on this library.  If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so.  If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.sound.sampled.spi;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import javax.sound.sampled.AudioFileFormat;
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import javax.sound.sampled.AudioInputStream;
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import javax.sound.sampled.UnsupportedAudioFileException;
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/**
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 * This abstract class defines the interface to audio file readers.
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 * A concrete provider subclass will implement the methods declared
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 * here.  These methods can be used to determine the format of
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 * files, and to retrieve an AudioInputStream for a file.
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 * @since 1.3
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 */
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public abstract class AudioFileReader
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{
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  /**
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   * The default constructor.  Note that this class is abstract and
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   * thus not directly instantiable.
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   */
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  public AudioFileReader()
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  {
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  }
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  /**
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   * Return the format of the given file as deduced by this provider.
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   * If the format of the file is not recognized, throws an exception.
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   * This will also throw an exception if there is an I/O error when
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   * reading the file.
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   * @param file the file to examine
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   * @return the audio file format
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   * @throws UnsupportedAudioFileException if the file's format is not
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   * recognized
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   * @throws IOException if there is an I/O error while reading the file
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   */
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  public abstract AudioFileFormat getAudioFileFormat(File file)
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    throws UnsupportedAudioFileException, IOException;
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  /**
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   * Return the format of the given input stream as deduced by this provider.
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   * If the format of the stream is not recognized, throws an exception.
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   * This will also throw an exception if there is an I/O error when
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   * reading the stream.  Note that providers typically use mark and reset
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   * on the stream when examining the data, and as a result an IOException
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   * may be thrown if the stream does not support these.
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   * @param is the stream to examine
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   * @return the audio file format
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   * @throws UnsupportedAudioFileException if the stream's format is not
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   * recognized
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   * @throws IOException if there is an I/O error while reading the stream
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   */
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  public abstract AudioFileFormat getAudioFileFormat(InputStream is)
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    throws UnsupportedAudioFileException, IOException;
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  /**
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   * Return the format of the given URL as deduced by this provider.
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   * If the format of the URL is not recognized, throws an exception.
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   * This will also throw an exception if there is an I/O error when
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   * reading the URL.
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   * @param url the URL to examine
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   * @return the audio file format
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   * @throws UnsupportedAudioFileException if the URL's format is not
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   * recognized
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   * @throws IOException if there is an I/O error while reading the URL
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   */
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  public abstract AudioFileFormat getAudioFileFormat(URL url)
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    throws UnsupportedAudioFileException, IOException;
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  /**
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   * Return an AudioInputStream for the given file.  The file is assumed
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   * to hold valid audio data.
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   * @param file the file to read
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   * @return an AudioInputStream for the file
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   * @throws UnsupportedAudioFileException if the file's type is not
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   * recognized
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   * @throws IOException if there is an error while reading the file
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   */
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  public abstract AudioInputStream getAudioInputStream(File file)
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    throws UnsupportedAudioFileException, IOException;
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  /**
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   * Return an AudioInputStream wrapping the given input stream.  The stream
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   * is assumed to hold valid audio data.
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   * @param is the input stream to wrap
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   * @return an AudioInputStream for the stream
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   * @throws UnsupportedAudioFileException if the stream's type is not
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   * recognized
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   * @throws IOException if there is an error while reading the stream
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   */
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  public abstract AudioInputStream getAudioInputStream(InputStream is)
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    throws UnsupportedAudioFileException, IOException;
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  /**
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   * Return an AudioInputStream for the given URL.  The URL is assumed
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   * to hold valid audio data.
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   * @param url the URL to read
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   * @return an AudioInputStream for the URL
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   * @throws UnsupportedAudioFileException if the URL's type is not
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   * recognized
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   * @throws IOException if there is an error while reading the URL
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   */
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  public abstract AudioInputStream getAudioInputStream(URL url)
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    throws UnsupportedAudioFileException, IOException;
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}

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