1 /* An input or output line
2 Copyright (C) 2005, 2012 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
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)
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.
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
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
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. */
39 package javax.sound.sampled;
42 * A Line represents a single input or output audio line.
49 * An object of this type holds information about a Line.
54 private Class<?> klass;
57 * Create a new Info object. The argument is the class of the line,
58 * for instance TargetDataLine.class.
59 * @param klass the class of the line
61 public Info(Class<?> klass)
67 * Return the line's class.
69 public Class<?> getLineClass()
75 * Return true if this Info object matches the given object.
76 * @param other the object to match
77 * @return true if they match, false otherwise
79 public boolean matches(Info other)
81 return klass.equals(other.klass);
85 * Return a description of this Info object.
87 public String toString()
89 return klass.toString();
94 * Add a listener which will be notified whenever this Line changes state.
95 * @param listener the listener to notify
97 void addLineListener(LineListener listener);
105 * Return the control associated with this Line that matches the
107 * @param what the type of the control to match
108 * @return the associated control
109 * @throws IllegalArgumentException if a control of this type is not
110 * available for this line
112 Control getControl(Control.Type what);
115 * Return an array of controls associated with this Line. Note that
116 * this method will not return null -- if there are no controls, it
117 * will return a zero-length array.
119 Control[] getControls();
122 * Return the Info object associated with this Line.
127 * Return true if a Control matching the argument is available for this
128 * Line, false otherwise.
129 * @param what the type of the control to match
131 boolean isControlSupported(Control.Type what);
134 * Return true if this line is open, false otherwise.
140 * @throws LineUnavailableException if the line is unavailable for some
143 void open() throws LineUnavailableException;
146 * Remove the listener from this Line; after this call the listener will
147 * no longer be notified when this Line changes state.
148 * @param listener the listener to remove
150 void removeLineListener(LineListener listener);