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Alpheus AFP Parser is a library and parser for the IBM Advanced Function Presentation (AFP) document/print stream format. Alpheus covers all AFP specifications: MO:DCA, BCOCA, CMOCA, FOCA, GOCA, IOCA, and PTOCA. It is a complete implementation. Every Structured Field, Repeating Group, and Triplet is fully implemented as Java class. Alpheus AFP Parser was written from scratch and has no external dependencies. Copyright 2015,2016 Rudolf Fiala Alpheus AFP Parser is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

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/*
Copyright 2015 Rudolf Fiala

This file is part of Alpheus AFP Parser.

Alpheus AFP Parser is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Alpheus AFP Parser is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Alpheus AFP Parser.  If not, see 
*/
package com.mgz.afp.modca;

import com.mgz.afp.base.StructuredField;
import com.mgz.afp.enums.AFPOrientation;
import com.mgz.afp.exceptions.AFPParserException;
import com.mgz.afp.parser.AFPParserConfiguration;
import com.mgz.util.UtilBinaryDecoding;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class IOC_IMImageOutputControl extends StructuredField {
  int xOrigin;
  int yOrigin;
  AFPOrientation xRotation;
  AFPOrientation yRotation;
  byte[] constantData10_17;
  ImageMapping xImageMapping;
  ImageMapping yImageMapping;
  byte[] constantData22_23;

  @Override
  public void decodeAFP(byte[] sfData, int offset, int length, AFPParserConfiguration config) throws AFPParserException {
    xOrigin = UtilBinaryDecoding.parseInt(sfData, offset, 3);
    yOrigin = UtilBinaryDecoding.parseInt(sfData, offset + 3, 3);
    xRotation = AFPOrientation.valueOf(UtilBinaryDecoding.parseShort(sfData, offset + 6, 2));
    yRotation = AFPOrientation.valueOf(UtilBinaryDecoding.parseShort(sfData, offset + 8, 2));
    constantData10_17 = new byte[8];
    System.arraycopy(sfData, offset + 10, constantData10_17, 0, constantData10_17.length);
    xImageMapping = ImageMapping.valueOf(UtilBinaryDecoding.parseShort(sfData, offset + 18, 2));
    yImageMapping = ImageMapping.valueOf(UtilBinaryDecoding.parseShort(sfData, offset + 20, 2));
    int actualLength = getActualLength(sfData, offset, length);
    // Error in MODCA spec: field constantData22_23 is optional.
    if (actualLength > 22) {
      constantData22_23 = new byte[2];
      System.arraycopy(sfData, offset + 22, constantData22_23, 0, constantData22_23.length);
    } else {
      constantData22_23 = null;
    }
  }


  @Override
  public void writeAFP(OutputStream os, AFPParserConfiguration config) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream(24);
    baos.write(UtilBinaryDecoding.intToByteArray(xOrigin, 3));
    baos.write(UtilBinaryDecoding.intToByteArray(yOrigin, 3));
    baos.write(xRotation.toBytes());
    baos.write(yRotation.toBytes());
    baos.write(constantData10_17);
    baos.write(xImageMapping.toBytes());
    baos.write(yImageMapping.toBytes());
    if (constantData22_23 != null) {
      baos.write(constantData22_23);
    }

    writeFullStructuredField(os, baos.toByteArray());
  }

  public int getxOrigin() {
    return xOrigin;
  }

  public void setxOrigin(int xOrigin) {
    this.xOrigin = xOrigin;
  }

  public int getyOrigin() {
    return yOrigin;
  }

  public void setyOrigin(int yOrigin) {
    this.yOrigin = yOrigin;
  }

  public AFPOrientation getxRotation() {
    return xRotation;
  }

  public void setxRotation(AFPOrientation xRotation) {
    this.xRotation = xRotation;
  }

  public AFPOrientation getyRotation() {
    return yRotation;
  }

  public void setyRotation(AFPOrientation yRotation) {
    this.yRotation = yRotation;
  }

  public byte[] getConstantData10_17() {
    return constantData10_17;
  }

  public void setConstantData10_17(byte[] constantData10_17) {
    this.constantData10_17 = constantData10_17;
  }

  public ImageMapping getxImageMapping() {
    return xImageMapping;
  }

  public void setxImageMapping(ImageMapping xImageMapping) {
    this.xImageMapping = xImageMapping;
  }

  public ImageMapping getyImageMapping() {
    return yImageMapping;
  }

  public void setyImageMapping(ImageMapping yImageMapping) {
    this.yImageMapping = yImageMapping;
  }

  public byte[] getConstantData22_23() {
    return constantData22_23;
  }

  public void setConstantData22_23(byte[] constantData22_23) {
    this.constantData22_23 = constantData22_23;
  }

  public enum ImageMapping {
    ImagePointToOnePel(0x03E8),
    ImagePointToTwoPel(0x07D0);
    int code;

    ImageMapping(int code) {
      this.code = code;
    }

    public static ImageMapping valueOf(short code) {
      for (ImageMapping im : values()) {
        if (im.code == code) {
          return im;
        }
      }
      return null;
    }

    public byte[] toBytes() {
      return UtilBinaryDecoding.intToByteArray(code, 2);
    }
  }
}