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      1 /*
      2  * Copyright (c) 2009-2010 jMonkeyEngine
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are
      7  * met:
      8  *
      9  * * Redistributions of source code must retain the above copyright
     10  *   notice, this list of conditions and the following disclaimer.
     11  *
     12  * * Redistributions in binary form must reproduce the above copyright
     13  *   notice, this list of conditions and the following disclaimer in the
     14  *   documentation and/or other materials provided with the distribution.
     15  *
     16  * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
     17  *   may be used to endorse or promote products derived from this software
     18  *   without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 package com.jme3.audio.plugins;
     34 
     35 import de.jarnbjo.ogg.*;
     36 import java.io.IOException;
     37 import java.io.InputStream;
     38 import java.util.Collection;
     39 import java.util.HashMap;
     40 import java.util.LinkedList;
     41 
     42 /**
     43  * Single-threaded physical ogg stream. Decodes audio in the same thread
     44  * that reads.
     45  */
     46 public class UncachedOggStream implements PhysicalOggStream {
     47 
     48     private boolean closed = false;
     49     private boolean eos = false;
     50     private boolean bos = false;
     51     private InputStream sourceStream;
     52     private LinkedList<OggPage> pageCache = new LinkedList<OggPage>();
     53     private HashMap<Integer, LogicalOggStream> logicalStreams
     54             = new HashMap<Integer, LogicalOggStream>();
     55     private OggPage lastPage = null;
     56 
     57     public UncachedOggStream(InputStream in) throws OggFormatException, IOException {
     58         this.sourceStream = in;
     59 
     60         // read until beginning of stream
     61         while (!bos){
     62             readNextOggPage();
     63         }
     64 
     65         // now buffer up an addition 25 pages
     66 //        while (pageCache.size() < 25 && !eos){
     67 //            readNextOggPage();
     68 //        }
     69     }
     70 
     71     public OggPage getLastOggPage() {
     72         return lastPage;
     73     }
     74 
     75     private void readNextOggPage() throws IOException {
     76         OggPage op = OggPage.create(sourceStream);
     77         if (!op.isBos()){
     78             bos = true;
     79         }
     80         if (op.isEos()){
     81             eos = true;
     82             lastPage = op;
     83         }
     84 
     85         LogicalOggStreamImpl los = (LogicalOggStreamImpl) getLogicalStream(op.getStreamSerialNumber());
     86         if (los == null){
     87             los = new LogicalOggStreamImpl(this, op.getStreamSerialNumber());
     88             logicalStreams.put(op.getStreamSerialNumber(), los);
     89             los.checkFormat(op);
     90         }
     91 
     92         pageCache.add(op);
     93     }
     94 
     95     public OggPage getOggPage(int index) throws IOException {
     96         if (eos){
     97             return null;
     98         }
     99 
    100 //        if (!eos){
    101 //            int num = pageCache.size();
    102 //            long fiveMillis = 5000000;
    103 //            long timeStart  = System.nanoTime();
    104 //            do {
    105 //                readNextOggPage();
    106 //            } while ( !eos && (System.nanoTime() - timeStart) < fiveMillis );
    107 //            System.out.println( pageCache.size() - num );
    108 
    109             if (pageCache.size() == 0 /*&& !eos*/){
    110                 readNextOggPage();
    111             }
    112 //        }
    113 
    114         return pageCache.removeFirst();
    115     }
    116 
    117     private LogicalOggStream getLogicalStream(int serialNumber) {
    118         return logicalStreams.get(Integer.valueOf(serialNumber));
    119     }
    120 
    121     public Collection<LogicalOggStream> getLogicalStreams() {
    122         return logicalStreams.values();
    123     }
    124 
    125     public void setTime(long granulePosition) throws IOException {
    126     }
    127 
    128     public boolean isSeekable() {
    129         return false;
    130     }
    131 
    132     public boolean isOpen() {
    133         return !closed;
    134     }
    135 
    136     public void close() throws IOException {
    137         closed = true;
    138         sourceStream.close();
    139     }
    140 }
    141