gomp-20050608-branch/libjava/classpath/javax/sound/sampled/Clip.java

   1 /*
   2    Copyright (C) 2005 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package javax.sound.sampled;
  40
  41 import java.io.IOException;
  42
  43 /**
  44  * A Clip represents some pre-loaded audio data.
  45  * @since 1.3
  46  */
  47 public interface Clip extends DataLine
  48 {
  49   /**
  50    * This can be passed to {@link #loop(int)} to indicate that looping
  51    * should be done continuously.
  52    */
  53   int LOOP_CONTINUOUSLY = -1;
  54
  55   /**
  56    * Return the frame length of this clip.
  57    */
  58   int getFrameLength();
  59
  60   /**
  61    * Return the length of the clip in microseconds.
  62    */
  63   long getMicrosecondLength();
  64
  65   /**
  66    * Start looping the clip.  Looping will occur count times, or, if count
  67    * is LOOP_CONTINUOUSLY, will be done continuously.  A count of 0 indicates
  68    * that any current looping should stop.
  69    * @param count the number of times to loop
  70    */
  71   void loop(int count);
  72
  73   /**
  74    * Open a clip, given an audio format and some data.
  75    * @param fmt the format of the data
  76    * @param data a byte array containing the audio data
  77    * @param offset the offset of the first byte of data in the array
  78    * @param len the length of the audio data in the array, in bytes
  79    * @throws LineUnavailableException if the line cannot be opened
  80    * @throws SecurityException if the line cannot be opened for security
  81    * reasons
  82    */
  83   void open(AudioFormat fmt, byte[] data, int offset, int len)
  84     throws LineUnavailableException;
  85
  86   /**
  87    * Open a clip, given an audio input stream.
  88    * @param ais the input stream
  89    * @throws LineUnavailableException if the line cannot be opened
  90    * @throws SecurityException if the line cannot be opened for security
  91    * reasons
  92    * @throws IOException if there is an I/O error while reading the stream
  93    */
  94   void open(AudioInputStream ais)
  95     throws LineUnavailableException, IOException;
  96
  97   /**
  98    * Set the position to the indicated frame.
  99    * @param where new frame position
 100    */
 101   void setFramePosition(int where);
 102
 103   /**
 104    * Set the loop begin and end points.  These are used by loop(int).
 105    * @param begin the starting point
 106    * @param end the ending point
 107    */
 108   void setLoopPoints(int begin, int end);
 109
 110   /**
 111    * Set the position to the indicated microsecond.
 112    * @param ms the new position in microseconds
 113    */
 114   void setMicrosecondPosition(long ms);
 115 }