/*
 * Copyright 1999-2003 Sun Microsystems, Inc.  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.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package javax.sound.midi.spi;

import java.io.InputStream;
import java.io.IOException;
import java.io.File;

import java.net.URL;

import javax.sound.midi.Soundbank;
import javax.sound.midi.InvalidMidiDataException;


/**
 * A <code>SoundbankReader</code> supplies soundbank file-reading services.
 * Concrete subclasses of <code>SoundbankReader</code> parse a given
 * soundbank file, producing a {@link javax.sound.midi.Soundbank}
 * object that can be loaded into a {@link javax.sound.midi.Synthesizer}.
 *
 * @since 1.3
 * @author Kara Kytle
 */
public abstract class SoundbankReader {


    /**
     * Obtains a soundbank object from the URL provided.
     * @param url URL representing the soundbank.
     * @return soundbank object
     * @throws InvalidMidiDataException if the URL does not point to
     * valid MIDI soundbank data recognized by this soundbank reader
     * @throws IOException if an I/O error occurs
     */
    public abstract Soundbank getSoundbank(URL url) throws InvalidMidiDataException, IOException;


    /**
     * Obtains a soundbank object from the <code>InputStream</code> provided.
     * @param stream <code>InputStream</code> representing the soundbank
     * @return soundbank object
     * @throws InvalidMidiDataException if the stream does not point to
     * valid MIDI soundbank data recognized by this soundbank reader
     * @throws IOException if an I/O error occurs
     */
    public abstract Soundbank getSoundbank(InputStream stream) throws InvalidMidiDataException, IOException;


    /**
     * Obtains a soundbank object from the <code>File</code> provided.
     * @param file the <code>File</code> representing the soundbank
     * @return soundbank object
     * @throws InvalidMidiDataException if the file does not point to
     * valid MIDI soundbank data recognized by this soundbank reader
     * @throws IOException if an I/O error occurs
     */
    public abstract Soundbank getSoundbank(File file) throws InvalidMidiDataException, IOException;


}