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

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1 772 jeremybenn
/* An input or output line
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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;
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/**
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 * A Line represents a single input or output audio line.
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 * @since 1.3
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 */
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public interface Line
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{
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  /**
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   * An object of this type holds information about a Line.
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   * @since 1.3
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   */
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  class Info
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  {
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    private Class klass;
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    /**
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     * Create a new Info object.  The argument is the class of the line,
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     * for instance TargetDataLine.class.
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     * @param klass the class of the line
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     */
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    public Info(Class<?> klass)
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    {
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      this.klass = klass;
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    }
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    /**
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     * Return the line's class.
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     */
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    public Class<?> getLineClass()
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    {
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      return klass;
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    }
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    /**
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     * Return true if this Info object matches the given object.
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     * @param other the object to match
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     * @return true if they match, false otherwise
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     */
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    public boolean matches(Info other)
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    {
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      return klass.equals(other.klass);
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    }
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    /**
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     * Return a description of this Info object.
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     */
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    public String toString()
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    {
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      return klass.toString();
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    }
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  }
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  /**
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   * Add a listener which will be notified whenever this Line changes state.
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   * @param listener the listener to notify
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   */
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  void addLineListener(LineListener listener);
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  /**
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   * Close this line.
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   */
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  void close();
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  /**
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   * Return the control associated with this Line that matches the
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   * argument.
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   * @param what the type of the control to match
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   * @return the associated control
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   * @throws IllegalArgumentException if a control of this type is not
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   * available for this line
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   */
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  Control getControl(Control.Type what);
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  /**
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   * Return an array of controls associated with this Line.  Note that
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   * this method will not return null -- if there are no controls, it
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   * will return a zero-length array.
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   */
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  Control[] getControls();
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  /**
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   * Return the Info object associated with this Line.
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   */
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  Info getLineInfo();
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  /**
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   * Return true if a Control matching the argument is available for this
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   * Line, false otherwise.
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   * @param what the type of the control to match
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   */
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  boolean isControlSupported(Control.Type what);
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  /**
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   * Return true if this line is open, false otherwise.
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   */
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  boolean isOpen();
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  /**
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   * Open this line.
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   * @throws LineUnavailableException if the line is unavailable for some
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   * reason
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   */
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  void open() throws LineUnavailableException;
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  /**
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   * Remove the listener from this Line; after this call the listener will
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   * no longer be notified when this Line changes state.
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   * @param listener the listener to remove
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   */
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  void removeLineListener(LineListener listener);
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}

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