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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 1.1.1.1 2004/04/04 22:09:12 shred
* First Import
*
* 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;
class Mapping0 extends Mapping {
private int[] magnitudes, angles, mux, submapFloors, submapResidues;
protected Mapping0(VorbisStream vorbis, BitInputStream source, SetupHeader header) throws VorbisFormatException, IOException {
int submaps=1;
if(source.getBit()) {
submaps=source.getInt(4)+1;
}
//System.out.println("submaps: "+submaps);
int channels=vorbis.getIdentificationHeader().getChannels();
int ilogChannels=Util.ilog(channels-1);
//System.out.println("ilogChannels: "+ilogChannels);
if(source.getBit()) {
int couplingSteps=source.getInt(8)+1;
magnitudes=new int[couplingSteps];
angles=new int[couplingSteps];
for(int i=0; i<couplingSteps; i++) {
magnitudes[i]=source.getInt(ilogChannels);
angles[i]=source.getInt(ilogChannels);
if(magnitudes[i]==angles[i] || magnitudes[i]>=channels || angles[i]>=channels) {
System.err.println(magnitudes[i]);
System.err.println(angles[i]);
throw new VorbisFormatException("The channel magnitude and/or angle mismatch.");
}
}
}
else {
magnitudes=new int[0];
angles=new int[0];
}
if(source.getInt(2)!=0) {
throw new VorbisFormatException("A reserved mapping field has an invalid value.");
}
mux=new int[channels];
if(submaps>1) {
for(int i=0; i<channels; i++) {
mux[i]=source.getInt(4);
if(mux[i]>submaps) {
throw new VorbisFormatException("A mapping mux value is higher than the number of submaps");
}
}
}
else {
for(int i=0; i<channels; i++) {
mux[i]=0;
}
}
submapFloors=new int[submaps];
submapResidues=new int[submaps];
int floorCount=header.getFloors().length;
int residueCount=header.getResidues().length;
for(int i=0; i<submaps; i++) {
source.getInt(8); // discard time placeholder
submapFloors[i]=source.getInt(8);
submapResidues[i]=source.getInt(8);
if(submapFloors[i]>floorCount) {
throw new VorbisFormatException("A mapping floor value is higher than the number of floors.");
}
if(submapResidues[i]>residueCount) {
throw new VorbisFormatException("A mapping residue value is higher than the number of residues.");
}
}
}
protected int getType() {
return 0;
}
protected int[] getAngles() {
return angles;
}
protected int[] getMagnitudes() {
return magnitudes;
}
protected int[] getMux() {
return mux;
}
protected int[] getSubmapFloors() {
return submapFloors;
}
protected int[] getSubmapResidues() {
return submapResidues;
}
protected int getCouplingSteps() {
return angles.length;
}
protected int getSubmaps() {
return submapFloors.length;
}
}
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