/*
* 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.sanselan.formats.psd.datareaders;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.sanselan.ImageReadException;
import org.apache.sanselan.common.BinaryFileParser;
import org.apache.sanselan.common.PackBits;
import org.apache.sanselan.common.mylzw.BitsToByteInputStream;
import org.apache.sanselan.common.mylzw.MyBitInputStream;
import org.apache.sanselan.formats.psd.ImageContents;
import org.apache.sanselan.formats.psd.PSDHeaderInfo;
import org.apache.sanselan.formats.psd.dataparsers.DataParser;
public class CompressedDataReader extends DataReader
{
public CompressedDataReader(DataParser fDataParser)
{
super(fDataParser);
}
public void readData(InputStream is, BufferedImage bi,
ImageContents imageContents, BinaryFileParser bfp)
throws ImageReadException, IOException
{
PSDHeaderInfo header = imageContents.header;
int width = header.Columns;
int height = header.Rows;
// this.setDebug(true);
int scanline_count = height * header.Channels;
int scanline_bytecounts[] = new int[scanline_count];
for (int i = 0; i < scanline_count; i++)
scanline_bytecounts[i] = bfp.read2Bytes("scanline_bytecount[" + i
+ "]", is, "PSD: bad Image Data");
bfp.setDebug(false);
// System.out.println("fImageContents.Compression: "
// + imageContents.Compression);
int depth = header.Depth;
int channel_count = dataParser.getBasicChannelsCount();
int data[][][] = new int[channel_count][height][];
// channels[0] =
for (int channel = 0; channel < channel_count; channel++)
for (int y = 0; y < height; y++)
{
int index = channel * height + y;
byte packed[] = bfp.readByteArray("scanline",
scanline_bytecounts[index], is,
"PSD: Missing Image Data");
byte unpacked[] = new PackBits().decompress(packed, width);
InputStream bais = new ByteArrayInputStream(unpacked);
MyBitInputStream mbis = new MyBitInputStream(bais,
BYTE_ORDER_MSB);
BitsToByteInputStream bbis = new BitsToByteInputStream(mbis, 8); // we want all samples to be bytes
int scanline[] = bbis.readBitsArray(depth, width);
data[channel][y] = scanline;
}
dataParser.parseData(data, bi, imageContents);
}
}