1 /*
   2  * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package com.sun.media.sound;
  26 
  27 import java.io.ByteArrayOutputStream;
  28 import java.io.DataInputStream;
  29 import java.io.File;
  30 import java.io.IOException;
  31 import java.io.InputStream;
  32 import java.net.URL;
  33 
  34 import javax.sound.midi.InvalidMidiDataException;
  35 import javax.sound.midi.Soundbank;
  36 import javax.sound.midi.spi.SoundbankReader;
  37 import javax.sound.sampled.AudioInputStream;
  38 import javax.sound.sampled.AudioSystem;
  39 import javax.sound.sampled.UnsupportedAudioFileException;
  40 
  41 /**
  42  * Soundbank reader that uses audio files as soundbanks.
  43  *
  44  * @author Karl Helgason
  45  */
  46 public final class AudioFileSoundbankReader extends SoundbankReader {
  47 
  48     public Soundbank getSoundbank(URL url)
  49             throws InvalidMidiDataException, IOException {
  50         try {
  51             AudioInputStream ais = AudioSystem.getAudioInputStream(url);
  52             Soundbank sbk = getSoundbank(ais);
  53             ais.close();
  54             return sbk;
  55         } catch (UnsupportedAudioFileException e) {
  56             return null;
  57         } catch (IOException e) {
  58             return null;
  59         }
  60     }
  61 
  62     public Soundbank getSoundbank(InputStream stream)
  63             throws InvalidMidiDataException, IOException {
  64         stream.mark(512);
  65         try {
  66             AudioInputStream ais = AudioSystem.getAudioInputStream(stream);
  67             Soundbank sbk = getSoundbank(ais);
  68             if (sbk != null)
  69                 return sbk;
  70         } catch (UnsupportedAudioFileException e) {
  71         } catch (IOException e) {
  72         }
  73         stream.reset();
  74         return null;
  75     }
  76 
  77     public Soundbank getSoundbank(AudioInputStream ais)
  78             throws InvalidMidiDataException, IOException {
  79         try {
  80             byte[] buffer;
  81             if (ais.getFrameLength() == -1) {
  82                 ByteArrayOutputStream baos = new ByteArrayOutputStream();
  83                 byte[] buff = new byte[1024
  84                         - (1024 % ais.getFormat().getFrameSize())];
  85                 int ret;
  86                 while ((ret = ais.read(buff)) != -1) {
  87                     baos.write(buff, 0, ret);
  88                 }
  89                 ais.close();
  90                 buffer = baos.toByteArray();
  91             } else {
  92                 buffer = new byte[(int) (ais.getFrameLength()
  93                                     * ais.getFormat().getFrameSize())];
  94                 new DataInputStream(ais).readFully(buffer);
  95             }
  96             ModelByteBufferWavetable osc = new ModelByteBufferWavetable(
  97                     new ModelByteBuffer(buffer), ais.getFormat(), -4800);
  98             ModelPerformer performer = new ModelPerformer();
  99             performer.getOscillators().add(osc);
 100 
 101             SimpleSoundbank sbk = new SimpleSoundbank();
 102             SimpleInstrument ins = new SimpleInstrument();
 103             ins.add(performer);
 104             sbk.addInstrument(ins);
 105             return sbk;
 106         } catch (Exception e) {
 107             return null;
 108         }
 109     }
 110 
 111     public Soundbank getSoundbank(File file)
 112             throws InvalidMidiDataException, IOException {
 113         try {
 114             AudioInputStream ais = AudioSystem.getAudioInputStream(file);
 115             ais.close();
 116             ModelByteBufferWavetable osc = new ModelByteBufferWavetable(
 117                     new ModelByteBuffer(file, 0, file.length()), -4800);
 118             ModelPerformer performer = new ModelPerformer();
 119             performer.getOscillators().add(osc);
 120             SimpleSoundbank sbk = new SimpleSoundbank();
 121             SimpleInstrument ins = new SimpleInstrument();
 122             ins.add(performer);
 123             sbk.addInstrument(ins);
 124             return sbk;
 125         } catch (UnsupportedAudioFileException e1) {
 126             return null;
 127         } catch (IOException e) {
 128             return null;
 129         }
 130     }
 131 }