1 /* GstSourceDataLine.java -- SourceDataLine implementation.
2  Copyright (C) 2007 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 package gnu.javax.sound.sampled.gstreamer.lines;
39 
40 import gnu.javax.sound.AudioSecurityManager;
41 import gnu.javax.sound.sampled.gstreamer.lines.GstPipeline.State;
42 
43 import javax.sound.sampled.AudioFormat;
44 import javax.sound.sampled.LineUnavailableException;
45 import javax.sound.sampled.SourceDataLine;
46 
47 import static gnu.javax.sound.AudioSecurityManager.Permission;
48 
49 public class GstSourceDataLine
50     extends GstDataLine implements SourceDataLine
51 {
52   private GstPipeline pipeline = null;
53   private boolean open = false;
54 
GstSourceDataLine(AudioFormat format)55   public GstSourceDataLine(AudioFormat format)
56   {
57     super(format);
58   }
59 
open()60   public void open() throws LineUnavailableException
61   {
62     AudioSecurityManager.checkPermissions(Permission.PLAY);
63 
64     if (open)
65       throw new IllegalStateException("Line already opened");
66 
67     // create the pipeline
68     pipeline = GstNativeDataLine.createSourcePipeline(getBufferSize());
69 
70     this.open = true;
71   }
72 
open(AudioFormat fmt)73   public void open(AudioFormat fmt) throws LineUnavailableException
74   {
75     AudioSecurityManager.checkPermissions(Permission.PLAY);
76 
77     setFormat(fmt);
78     this.open();
79   }
80 
open(AudioFormat fmt, int size)81   public void open(AudioFormat fmt, int size) throws LineUnavailableException
82   {
83     AudioSecurityManager.checkPermissions(Permission.PLAY);
84 
85     setBufferSize(size);
86     this.open(fmt);
87   }
88 
write(byte[] buf, int offset, int length)89   public int write(byte[] buf, int offset, int length)
90   {
91     return this.pipeline.write(buf, offset, length);
92   }
93 
available()94   public int available()
95   {
96     return this.pipeline.available();
97   }
98 
drain()99   public void drain()
100   {
101     this.pipeline.drain();
102   }
103 
flush()104   public void flush()
105   {
106     this.pipeline.flush();
107   }
108 
getFramePosition()109   public int getFramePosition()
110   {
111     System.out.println("getFramePosition -: IMPLEMENT ME!!");
112     return 0;
113   }
114 
getLongFramePosition()115   public long getLongFramePosition()
116   {
117     System.out.println("getLongFramePosition -: IMPLEMENT ME!!");
118     return 0;
119   }
120 
getMicrosecondPosition()121   public long getMicrosecondPosition()
122   {
123     System.out.println("getMicrosecondPosition -: IMPLEMENT ME!!");
124     return 0;
125   }
126 
isActive()127   public boolean isActive()
128   {
129     State state = pipeline.getState();
130     return (state == State.PLAY || state == State.PAUSE);
131   }
132 
start()133   public void start()
134   {
135     pipeline.setState(State.PLAY);
136   }
137 
stop()138   public void stop()
139   {
140     pipeline.setState(State.PAUSE);
141   }
142 
close()143   public void close()
144   {
145     pipeline.close();
146     this.open = false;
147   }
148 
isRunning()149   public boolean isRunning()
150   {
151     return (pipeline.getState() == State.PLAY);
152   }
153 }
154