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    1   /*
    2    * Copyright (c) 2007, 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 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   }

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