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