| /** |
| * 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. |
| */ |
| |
| package org.apache.pdfbox.jbig2.decoder.mmr; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assume.assumeTrue; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import javax.imageio.stream.ImageInputStream; |
| |
| import org.apache.pdfbox.jbig2.Bitmap; |
| import org.apache.pdfbox.jbig2.err.InvalidHeaderValueException; |
| import org.apache.pdfbox.jbig2.io.DefaultInputStreamFactory; |
| import org.apache.pdfbox.jbig2.io.SubInputStream; |
| import org.junit.Test; |
| |
| public class MMRDecompressorTest |
| { |
| |
| @Test |
| public void mmrDecodingTest() throws IOException, InvalidHeaderValueException |
| { |
| final byte[] expected = new byte[] { 0, 0, 2, 34, 38, 102, -17, -1, 2, 102, 102, // |
| -18, -18, -17, -1, -1, 0, 2, 102, 102, 127, // |
| -1, -1, -1, 0, 0, 0, 4, 68, 102, 102, 127 }; |
| |
| final File inputFile = new File("target/images/sampledata.jb2"); |
| // skip test if input stream isn't available |
| assumeTrue(inputFile.exists()); |
| |
| final InputStream inputStream = new FileInputStream(inputFile); |
| |
| final DefaultInputStreamFactory disf = new DefaultInputStreamFactory(); |
| final ImageInputStream iis = disf.getInputStream(inputStream); |
| |
| // Sixth Segment (number 5) |
| final SubInputStream sis = new SubInputStream(iis, 252, 38); |
| |
| final MMRDecompressor mmrd = new MMRDecompressor(16 * 4, 4, sis); |
| |
| final Bitmap b = mmrd.uncompress(); |
| final byte[] actual = b.getByteArray(); |
| |
| assertArrayEquals(expected, actual); |
| } |
| } |