/* * $ProjectName$ * $ProjectRevision$ * ----------------------------------------------------------- * $Id: BasicStream.java,v 1.1 2003/08/08 19:48:22 jarnbjo Exp $ * ----------------------------------------------------------- * * $Author: jarnbjo $ * * Description: * * Copyright 2002-2003 Tor-Einar Jarnbjo * ----------------------------------------------------------- * * Change History * ----------------------------------------------------------- * $Log: BasicStream.java,v $ * */ package de.jarnbjo.ogg; import java.io.*; import java.net.*; import java.util.*; /** * Implementation of the <code>PhysicalOggStream</code> interface for reading * an Ogg stream from a URL. This class performs * no internal caching, and will not read data from the network before * requested to do so. It is intended to be used in non-realtime applications * like file download managers or similar. */ public class BasicStream implements PhysicalOggStream { private boolean closed=false; private InputStream sourceStream; private Object drainLock=new Object(); private LinkedList pageCache=new LinkedList(); private long numberOfSamples=-1; private int position=0; private HashMap logicalStreams=new HashMap(); private OggPage firstPage; public BasicStream(InputStream sourceStream) throws OggFormatException, IOException { firstPage=OggPage.create(sourceStream); position+=firstPage.getTotalLength(); LogicalOggStreamImpl los=new LogicalOggStreamImpl(this, firstPage.getStreamSerialNumber()); logicalStreams.put(new Integer(firstPage.getStreamSerialNumber()), los); los.checkFormat(firstPage); } public Collection getLogicalStreams() { return logicalStreams.values(); } public boolean isOpen() { return !closed; } public void close() throws IOException { closed=true; sourceStream.close(); } public int getContentLength() { return -1; } public int getPosition() { return position; } int pageNumber=2; public OggPage getOggPage(int index) throws IOException { if(firstPage!=null) { OggPage tmp=firstPage; firstPage=null; return tmp; } else { OggPage page=OggPage.create(sourceStream); position+=page.getTotalLength(); return page; } } private LogicalOggStream getLogicalStream(int serialNumber) { return (LogicalOggStream)logicalStreams.get(new Integer(serialNumber)); } public void setTime(long granulePosition) throws IOException { throw new UnsupportedOperationException("Method not supported by this class"); } /** * @return always <code>false</code> */ public boolean isSeekable() { return false; } }