9fee0ec4ca
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7101 a1c6a512-1295-4272-9138-f99709370657
127 lines
No EOL
3.2 KiB
Java
127 lines
No EOL
3.2 KiB
Java
/*
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* $ProjectName$
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* $ProjectRevision$
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* -----------------------------------------------------------
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* $Id$
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* -----------------------------------------------------------
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*
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* $Author$
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*
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* Description:
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*
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* Copyright 2002-2003 Tor-Einar Jarnbjo
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* -----------------------------------------------------------
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*
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* Change History
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* -----------------------------------------------------------
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* $Log$
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* Revision 1.1 2005/07/11 15:42:36 hcl
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* Songdb java version, source. only 1.5 compatible
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*
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* Revision 1.1.1.1 2004/04/04 22:09:12 shred
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* First Import
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*
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* Revision 1.1 2003/04/10 19:48:22 jarnbjo
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* no message
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*
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* Revision 1.1 2003/03/31 00:23:04 jarnbjo
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* no message
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*
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*/
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package de.jarnbjo.ogg;
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import java.io.*;
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import java.net.*;
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import java.util.*;
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/**
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* Implementation of the <code>PhysicalOggStream</code> interface for reading
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* an Ogg stream from a URL. This class performs
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* no internal caching, and will not read data from the network before
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* requested to do so. It is intended to be used in non-realtime applications
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* like file download managers or similar.
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*/
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public class OnDemandUrlStream implements PhysicalOggStream {
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private boolean closed=false;
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private URLConnection source;
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private InputStream sourceStream;
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private Object drainLock=new Object();
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private LinkedList pageCache=new LinkedList();
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private long numberOfSamples=-1;
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private int contentLength=0;
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private int position=0;
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private HashMap logicalStreams=new HashMap();
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private OggPage firstPage;
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private static final int PAGECACHE_SIZE = 20;
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public OnDemandUrlStream(URL source) throws OggFormatException, IOException {
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this.source=source.openConnection();
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this.sourceStream=this.source.getInputStream();
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contentLength=this.source.getContentLength();
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firstPage=OggPage.create(sourceStream);
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position+=firstPage.getTotalLength();
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LogicalOggStreamImpl los=new LogicalOggStreamImpl(this, firstPage.getStreamSerialNumber());
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logicalStreams.put(new Integer(firstPage.getStreamSerialNumber()), los);
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los.checkFormat(firstPage);
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}
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public Collection getLogicalStreams() {
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return logicalStreams.values();
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}
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public boolean isOpen() {
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return !closed;
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}
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public void close() throws IOException {
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closed=true;
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sourceStream.close();
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}
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public int getContentLength() {
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return contentLength;
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}
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public int getPosition() {
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return position;
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}
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int pageNumber=2;
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public OggPage getOggPage(int index) throws IOException {
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if(firstPage!=null) {
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OggPage tmp=firstPage;
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firstPage=null;
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return tmp;
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}
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else {
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OggPage page=OggPage.create(sourceStream);
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position+=page.getTotalLength();
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return page;
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}
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}
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private LogicalOggStream getLogicalStream(int serialNumber) {
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return (LogicalOggStream)logicalStreams.get(new Integer(serialNumber));
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}
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public void setTime(long granulePosition) throws IOException {
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throw new UnsupportedOperationException("Method not supported by this class");
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}
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/**
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* @return always <code>false</code>
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*/
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public boolean isSeekable() {
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return false;
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}
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} |