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/*
* $ProjectName$
* $ProjectRevision$
* -----------------------------------------------------------
* $Id$
* -----------------------------------------------------------
*
* $Author$
*
* Description:
*
* Copyright 2002-2003 Tor-Einar Jarnbjo
* -----------------------------------------------------------
*
* Change History
* -----------------------------------------------------------
* $Log$
* Revision 1.1 2005/07/11 15:42:36 hcl
* Songdb java version, source. only 1.5 compatible
*
* Revision 1.3 2004/09/21 12:09:45 shred
* *** empty log message ***
*
* Revision 1.2 2004/09/21 06:38:45 shred
* Importe reorganisiert, damit Eclipse Ruhe gibt. ;-)
*
* Revision 1.1.1.1 2004/04/04 22:09:12 shred
* First Import
*
*
*/
package de.jarnbjo.ogg;
import java.io.IOException;
import java.io.InputStream;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
/**
* 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;
}
}
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