001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.imaging.formats.psd.datareaders;
018
019import java.awt.image.BufferedImage;
020import java.io.IOException;
021import java.io.InputStream;
022import java.nio.ByteOrder;
023
024import org.apache.commons.imaging.ImagingException;
025import org.apache.commons.imaging.common.Allocator;
026import org.apache.commons.imaging.common.BinaryFileParser;
027import org.apache.commons.imaging.formats.psd.PsdHeaderInfo;
028import org.apache.commons.imaging.formats.psd.PsdImageContents;
029import org.apache.commons.imaging.formats.psd.dataparsers.AbstractDataParser;
030import org.apache.commons.imaging.mylzw.BitsToByteInputStream;
031import org.apache.commons.imaging.mylzw.MyBitInputStream;
032
033public class UncompressedDataReader implements DataReader {
034
035    private final AbstractDataParser dataParser;
036
037    public UncompressedDataReader(final AbstractDataParser dataParser) {
038        this.dataParser = dataParser;
039    }
040
041    @Override
042    public void readData(final InputStream is, final BufferedImage bi, final PsdImageContents imageContents, final BinaryFileParser bfp)
043            throws ImagingException, IOException {
044        final PsdHeaderInfo header = imageContents.header;
045        final int width = header.columns;
046        final int height = header.rows;
047
048        final int channelCount = dataParser.getBasicChannelsCount();
049        final int depth = header.depth;
050        final MyBitInputStream mbis = new MyBitInputStream(is, ByteOrder.BIG_ENDIAN, false);
051        // we want all samples to be bytes
052        try (BitsToByteInputStream bbis = new BitsToByteInputStream(mbis, 8)) {
053            final int[][][] data = new int[Allocator.check(channelCount)][Allocator.check(height)][Allocator.check(width)];
054            for (int channel = 0; channel < channelCount; channel++) {
055                for (int y = 0; y < height; y++) {
056                    for (int x = 0; x < width; x++) {
057                        final int b = bbis.readBits(depth);
058
059                        data[channel][y][x] = (byte) b;
060                    }
061                }
062            }
063
064            dataParser.parseData(data, bi, imageContents);
065        }
066    }
067}