Frames | No Frames |
1: /*GstAudioFileReader -- GNU Classpath GStreamer AudioFileReader. 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.io; 39: 40: import java.io.BufferedInputStream; 41: import java.io.File; 42: import java.io.FileInputStream; 43: import java.io.IOException; 44: import java.io.InputStream; 45: import java.net.URL; 46: 47: import javax.sound.sampled.AudioFileFormat; 48: import javax.sound.sampled.AudioFormat; 49: import javax.sound.sampled.AudioInputStream; 50: import javax.sound.sampled.AudioSystem; 51: import javax.sound.sampled.UnsupportedAudioFileException; 52: import javax.sound.sampled.spi.AudioFileReader; 53: 54: /** 55: * An implementation of a general AudioFileReader. Uses GStreamer to 56: * parse and retrieve informations about the file passed as input. 57: * 58: * @author Mario Torre <neugens@limasoftware.net> 59: */ 60: public class GstAudioFileReader 61: extends AudioFileReader 62: { 63: @Override 64: public AudioFileFormat getAudioFileFormat(File file) 65: throws UnsupportedAudioFileException, IOException 66: { 67: throw new UnsupportedAudioFileException("Unsupported encoding."); 68: } 69: 70: @Override 71: public AudioFileFormat getAudioFileFormat(InputStream is) 72: throws UnsupportedAudioFileException, IOException 73: { 74: throw new UnsupportedAudioFileException("Unsupported encoding."); 75: } 76: 77: @Override 78: public AudioFileFormat getAudioFileFormat(URL url) 79: throws UnsupportedAudioFileException, IOException 80: { 81: return getAudioFileFormat(new BufferedInputStream(url.openStream())); 82: } 83: 84: @Override 85: public AudioInputStream getAudioInputStream(File file) 86: throws UnsupportedAudioFileException, IOException 87: { 88: InputStream stream = new FileInputStream(file); 89: long length = file.length(); 90: 91: AudioFormat format = null; 92: 93: try 94: { 95: format = GstAudioFileReaderNativePeer.getAudioFormat(file); 96: } 97: catch (Exception e) 98: { 99: // TODO Auto-generated catch block 100: e.printStackTrace(); 101: } 102: 103: // get the header size 104: if (format == null) 105: throw new UnsupportedAudioFileException("Unsupported encoding."); 106: 107: return new AudioInputStream(stream, format, length); 108: } 109: 110: @Override 111: public AudioInputStream getAudioInputStream(InputStream is) 112: throws UnsupportedAudioFileException, IOException 113: { 114: AudioFormat format = null; 115: 116: try 117: { 118: format = GstAudioFileReaderNativePeer.getAudioFormat(is); 119: } 120: catch (Exception e) 121: { 122: // TODO Auto-generated catch block 123: e.printStackTrace(); 124: } 125: 126: // get the header size 127: if (format == null) 128: throw new UnsupportedAudioFileException("Unsupported encoding."); 129: 130: return new AudioInputStream(is, format, AudioSystem.NOT_SPECIFIED); 131: } 132: 133: @Override 134: public AudioInputStream getAudioInputStream(URL url) 135: throws UnsupportedAudioFileException, IOException 136: { 137: return getAudioInputStream(new BufferedInputStream(url.openStream())); 138: } 139: }