| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.render.ps; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| import org.apache.xmlgraphics.image.codec.tiff.TIFFImage; |
| import org.apache.xmlgraphics.image.loader.impl.ImageRawCCITTFax; |
| import org.apache.xmlgraphics.ps.ImageEncoder; |
| import org.apache.xmlgraphics.ps.PSDictionary; |
| |
| /** |
| * ImageEncoder implementation for CCITT encoded images. |
| */ |
| public class ImageEncoderCCITTFax implements ImageEncoder { |
| |
| private final ImageRawCCITTFax ccitt; |
| |
| /** |
| * Main constructor. |
| * @param ccitt the CCITT encoded image |
| */ |
| public ImageEncoderCCITTFax(ImageRawCCITTFax ccitt) { |
| this.ccitt = ccitt; |
| } |
| |
| /** {@inheritDoc} */ |
| public void writeTo(OutputStream out) throws IOException { |
| ccitt.writeTo(out); |
| } |
| |
| /** {@inheritDoc} */ |
| public String getImplicitFilter() { |
| PSDictionary dict = new PSDictionary(); |
| dict.put("/Columns", ccitt.getSize().getWidthPx()); |
| int compression = ccitt.getCompression(); |
| switch (compression) { |
| case TIFFImage.COMP_FAX_G3_1D : |
| dict.put("/K", 0); |
| break; |
| case TIFFImage.COMP_FAX_G3_2D : |
| dict.put("/K", 1); |
| break; |
| case TIFFImage.COMP_FAX_G4_2D : |
| dict.put("/K", -1); |
| break; |
| default: |
| throw new IllegalStateException( |
| "Invalid compression scheme: " + compression); |
| } |
| |
| return dict.toString() + " /CCITTFaxDecode"; |
| } |
| } |