/* MidiDeviceProvider.java -- Abstract parent for a MIDI device provider.
   Copyright (C) 2005 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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any later version.

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

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02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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this exception to your version of the library, but you are not
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package javax.sound.midi.spi;

import javax.sound.midi.*;

/**
 * The abstract base class for all MidiDeviceProvider types.
 * 
 * @author Anthony Green (green@redhat.com)
 * @since 1.3
 *
 */
public abstract class MidiDeviceProvider
{
  /**
   * Returns true if this provider supports a specific MIDI device.
   * 
   * @param info the MIDI device descriptor
   * @return true if this provider supports info
   */
  public boolean isDeviceSupported(MidiDevice.Info info)
  {
    MidiDevice.Info infos[] = getDeviceInfo();
    
    int i = infos.length;
    
    while (i > 0)
    {
      if (info.equals(infos[--i]))
        return true;
    }
    
    return false;
  }
  
  /**
   * Get the list descriptors for all MIDI devices supported by
   * this provider.
   * 
   * @return an array of descriptors for all supported MIDI devices.
   */
  public abstract MidiDevice.Info[] getDeviceInfo();
  
  /**
   * Get the MidiDevice for the MIDI device described by info
   * 
   * @param info the descriptor for the MIDI device we want
   * @return the MidiDevice we're looking for
   * @throws IllegalArgumentException is this provider doesn't support info
   */
  public abstract MidiDevice getDevice(MidiDevice.Info info)
    throws IllegalArgumentException;
}