// Copyright (C) 1998, 1999, 2001 Chris Nokleberg// Please see included LICENSE.TXTpackage com.sixlegs.image.png;import java.io.IOException;final class Chunk_pCALextends Chunk{    Chunk_pCAL()    {        super(pCAL);    }        protected boolean multipleOK()    {        return false;    }    protected boolean beforeIDAT()    {        return true;    }    protected void readData()    throws IOException    {        String purpose, unit_string;        if ((purpose = in_data.readString()).length() > 79) {            throw new PngExceptionSoft("pCAL purpose too long");        }        purpose = KeyValueChunk.repairKey(purpose);        int X0 = in_data.readInt();        int X1 = in_data.readInt();        if (X1 == X0) {            throw new PngExceptionSoft("X1 == X0 in pCAL chunk");        }                int equation_type = in_data.readUnsignedByte();        int N = in_data.readUnsignedByte();        if ((unit_string = in_data.readString()).length() > 79) {            throw new PngExceptionSoft("pCAL unit string too long");        }        double[] P = new double[N];        for (int i = 0; i < N; i++) {            P[i] = in_data.readFloatingPoint();        }        img.data.properties.put("pixel calibration purpose", purpose);        img.data.properties.put("pixel calibration x0", new Integer(X0));        img.data.properties.put("pixel calibration x1", new Integer(X1));        img.data.properties.put("pixel calibration type", new Integer(equation_type));        img.data.properties.put("pixel calibration n", new Integer(N));        img.data.properties.put("pixel calibration unit", unit_string);        img.data.properties.put("pixel calibration parameters", P);    }    }