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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 1.2 2004/09/21 06:39:06 shred
* Importe reorganisiert, damit Eclipse Ruhe gibt. ;-)
*
* Revision 1.1.1.1 2004/04/04 22:09:12 shred
* First Import
*
* Revision 1.3 2003/03/31 00:20:16 jarnbjo
* no message
*
* Revision 1.2 2003/03/16 01:11:12 jarnbjo
* no message
*
*
*/
package de.jarnbjo.vorbis;
import java.io.IOException;
import de.jarnbjo.util.io.BitInputStream;
/**
*/
public class IdentificationHeader {
private int version, channels, sampleRate, bitrateMaximum, bitrateNominal, bitrateMinimum, blockSize0, blockSize1;
private boolean framingFlag;
private MdctFloat[] mdct=new MdctFloat[2];
//private MdctLong[] mdctInt=new MdctLong[2];
private static final long HEADER = 0x736962726f76L; // 'vorbis'
public IdentificationHeader(BitInputStream source) throws VorbisFormatException, IOException {
//equalizer=new Equalizer();
//equalizer.pack();
//equalizer.show();
long leading=source.getLong(48);
if(leading!=HEADER) {
throw new VorbisFormatException("The identification header has an illegal leading.");
}
version=source.getInt(32);
channels=source.getInt(8);
sampleRate=source.getInt(32);
bitrateMaximum=source.getInt(32);
bitrateNominal=source.getInt(32);
bitrateMinimum=source.getInt(32);
int bs=source.getInt(8);
blockSize0=1<<(bs&0xf);
blockSize1=1<<(bs>>4);
mdct[0]=new MdctFloat(blockSize0);
mdct[1]=new MdctFloat(blockSize1);
//mdctInt[0]=new MdctLong(blockSize0);
//mdctInt[1]=new MdctLong(blockSize1);
framingFlag=source.getInt(8)!=0;
}
public int getSampleRate() {
return sampleRate;
}
public int getMaximumBitrate() {
return bitrateMaximum;
}
public int getNominalBitrate() {
return bitrateNominal;
}
public int getMinimumBitrate() {
return bitrateMinimum;
}
public int getChannels() {
return channels;
}
public int getBlockSize0() {
return blockSize0;
}
public int getBlockSize1() {
return blockSize1;
}
protected MdctFloat getMdct0() {
return mdct[0];
}
protected MdctFloat getMdct1() {
return mdct[1];
}
public int getVersion() {
return version;
}
}
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