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/*
* Copyright (c) 2014, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.imageio.plugins.psd;
import com.twelvemonkeys.imageio.util.IIOUtil;
import com.twelvemonkeys.io.enc.DecoderStream;
import com.twelvemonkeys.io.enc.PackBitsDecoder;
import com.twelvemonkeys.lang.StringUtil;
import javax.imageio.stream.ImageInputStream;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.zip.ZipInputStream;
/**
* PSDUtil
*
* @author Harald Kuhr
* @author last modified by $Author: haraldk$
* @version $Id: PSDUtil.java,v 1.0 Apr 29, 2008 5:05:00 PM haraldk Exp$
*/
final class PSDUtil {
// TODO: Duplicated code from IFF plugin, move to some common util?
static String intToStr(int value) {
return new String(
new byte[]{
(byte) ((value & 0xff000000) >>> 24),
(byte) ((value & 0x00ff0000) >> 16),
(byte) ((value & 0x0000ff00) >> 8),
(byte) ((value & 0x000000ff))
}
);
}
// TODO: Proably also useful for PICT reader, move to some common util?
static String readPascalString(final DataInput pInput) throws IOException {
int length = pInput.readUnsignedByte();
if (length == 0) {
return "";
}
byte[] bytes = new byte[length];
pInput.readFully(bytes);
return StringUtil.decode(bytes, 0, bytes.length, "ASCII");
}
// TODO: Probably also useful for PICT reader, move to some common util?
static String readUnicodeString(final DataInput pInput) throws IOException {
int length = pInput.readInt();
if (length == 0) {
return "";
}
byte[] bytes = new byte[length * 2];
pInput.readFully(bytes);
return StringUtil.decode(bytes, 0, bytes.length, "UTF-16");
}
static DataInputStream createPackBitsStream(final ImageInputStream pInput, long pLength) {
return new DataInputStream(new DecoderStream(IIOUtil.createStreamAdapter(pInput, pLength), new PackBitsDecoder()));
}
static DataInputStream createZipStream(final ImageInputStream pInput, long pLength) {
return new DataInputStream(new ZipInputStream(IIOUtil.createStreamAdapter(pInput, pLength)));
}
static DataInputStream createZipPredictorStream(final ImageInputStream pInput, long pLength) {
throw new UnsupportedOperationException("Method createZipPredictonStream not implemented");
}
public static float fixedPointToFloat(int pFP) {
return ((pFP & 0xffff0000) >> 16) + (pFP & 0xffff) / (float) 0xffff;
}
}