Home | History | Annotate | Download | only in plugins 
      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 com.jme3.util.IntMap;
     36 import de.jarnbjo.ogg.LogicalOggStream;
     37 import de.jarnbjo.ogg.LogicalOggStreamImpl;
     38 import de.jarnbjo.ogg.OggPage;
     39 import de.jarnbjo.ogg.PhysicalOggStream;
     40 import java.io.IOException;
     41 import java.io.InputStream;
     42 import java.util.Collection;
     43 import java.util.HashMap;
     44 import java.util.logging.Level;
     45 import java.util.logging.Logger;
     46 
     47 /**
     48  *  Implementation of the <code>PhysicalOggStream</code> interface for reading
     49  *  and caching an Ogg stream from a URL. This class reads the data as fast as
     50  *  possible from the URL, caches it locally either in memory or on disk, and
     51  *  supports seeking within the available data.
     52  */
     53 public class CachedOggStream implements PhysicalOggStream {
     54 
     55     private boolean closed = false;
     56     private boolean eos = false;
     57     private boolean bos = false;
     58     private InputStream sourceStream;
     59     private HashMap<Integer, LogicalOggStream> logicalStreams
     60             = new HashMap<Integer, LogicalOggStream>();
     61 
     62     private IntMap<OggPage> oggPages = new IntMap<OggPage>();
     63     private OggPage lastPage;
     64 
     65     private int pageNumber;
     66 
     67     public CachedOggStream(InputStream in) throws IOException {
     68         sourceStream = in;
     69 
     70         // Read all OGG pages in file
     71         long time = System.nanoTime();
     72         while (!eos){
     73             readOggNextPage();
     74         }
     75         long dt = System.nanoTime() - time;
     76         Logger.getLogger(CachedOggStream.class.getName()).log(Level.INFO, "Took {0} ms to load OGG", dt/1000000);
     77     }
     78 
     79     public OggPage getLastOggPage() {
     80         return lastPage;
     81     }
     82 
     83     private LogicalOggStream getLogicalStream(int serialNumber) {
     84         return logicalStreams.get(Integer.valueOf(serialNumber));
     85     }
     86 
     87     public Collection<LogicalOggStream> getLogicalStreams() {
     88         return logicalStreams.values();
     89     }
     90 
     91     public boolean isOpen() {
     92         return !closed;
     93     }
     94 
     95     public void close() throws IOException {
     96         closed = true;
     97         sourceStream.close();
     98     }
     99 
    100     public OggPage getOggPage(int index) throws IOException {
    101         return oggPages.get(index);
    102     }
    103 
    104    public void setTime(long granulePosition) throws IOException {
    105        for (LogicalOggStream los : getLogicalStreams()){
    106            los.setTime(granulePosition);
    107        }
    108    }
    109 
    110    private int readOggNextPage() throws IOException {
    111        if (eos)
    112            return -1;
    113 
    114        OggPage op = OggPage.create(sourceStream);
    115        if (!op.isBos()){
    116            bos = true;
    117        }
    118        if (op.isEos()){
    119            eos = true;
    120            lastPage = op;
    121        }
    122 
    123        LogicalOggStreamImpl los = (LogicalOggStreamImpl) logicalStreams.get(op.getStreamSerialNumber());
    124        if(los == null) {
    125           los = new LogicalOggStreamImpl(this, op.getStreamSerialNumber());
    126           logicalStreams.put(op.getStreamSerialNumber(), los);
    127           los.checkFormat(op);
    128        }
    129 
    130        los.addPageNumberMapping(pageNumber);
    131        los.addGranulePosition(op.getAbsoluteGranulePosition());
    132 
    133        oggPages.put(pageNumber, op);
    134        pageNumber++;
    135 
    136        return pageNumber-1;
    137    }
    138 
    139    public boolean isSeekable() {
    140       return true;
    141    }
    142 }