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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 javax.imageio.IIOException;
import javax.imageio.ImageIO;
import javax.imageio.stream.ImageInputStream;
import java.awt.*;
import java.awt.color.ColorSpace;
import java.awt.image.*;
import java.io.ByteArrayInputStream;
import java.io.IOException;
/**
* PSDThumbnail
*
* @author Harald Kuhr
* @author last modified by $Author: haraldk$
* @version $Id: PSDThumbnail.java,v 1.0 Jul 29, 2009 4:41:06 PM haraldk Exp$
*/
final class PSDThumbnail extends PSDImageResource {
private int format;
private int width;
private int height;
private int widthBytes;
private byte[] data;
public PSDThumbnail(final short pId, final ImageInputStream pInput) throws IOException {
super(pId, pInput);
}
/*
Thumbnail header, size 28
4 Format. 1 = kJpegRGB . Also supports kRawRGB (0).
4 Width of thumbnail in pixels.
4 Height of thumbnail in pixels.
4 Widthbytes: Padded row bytes = (width * bits per pixel + 31) / 32 * 4.
4 Total size = widthbytes * height * planes
4 Size after compression. Used for consistency check.
2 Bits per pixel. = 24
2 Number of planes. = 1
*/
@Override
protected void readData(final ImageInputStream pInput) throws IOException {
format = pInput.readInt();
width = pInput.readInt();
height = pInput.readInt();
// This data isn't really useful, unless we're dealing with raw bytes
widthBytes = pInput.readInt();
int totalSize = pInput.readInt(); // Hmm.. Is this really useful at all?
// Consistency check
int sizeCompressed = pInput.readInt();
if (sizeCompressed != (size - 28)) {
throw new IIOException("Corrupt thumbnail in PSD document");
}
// According to the spec, only 24 bits and 1 plane is supported
int bits = pInput.readUnsignedShort();
int planes = pInput.readUnsignedShort();
if (bits != 24 && planes != 1) {
// TODO: Warning/Exception
}
data = new byte[sizeCompressed];
pInput.readFully(data);
}
BufferedImage imageFromRawData(int width, int height, int scanLine, byte[] data) {
DataBuffer buffer = new DataBufferByte(data, data.length);
WritableRaster raster = Raster.createInterleavedRaster(
buffer, width, height,
scanLine, 3,
new int[]{0, 1, 2},
null
);
ColorModel cm = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB), false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
return new BufferedImage(cm, raster, cm.isAlphaPremultiplied(), null);
}
public final int getWidth() {
return width;
}
public final int getHeight() {
return height;
}
public final BufferedImage getThumbnail() throws IOException {
switch (format) {
case 0:
// RAW RGB
return imageFromRawData(width, height, widthBytes, data.clone()); // Clone data, as image is mutable
case 1:
// JPEG
// TODO: Support BGR if id == RES_THUMBNAIL_PS4? Or is that already supported in the JPEG reader?
return ImageIO.read(new ByteArrayInputStream(data));
default:
throw new IIOException(String.format("Unsupported thumbnail format (%s) in PSD document", format));
}
}
@Override
public String toString() {
StringBuilder builder = toStringBuilder();
builder.append(", format: ");
switch (format) {
case 0:
// RAW RGB
builder.append("RAW RGB");
break;
case 1:
// JPEG
builder.append("JPEG");
break;
default:
builder.append("Unknown");
break;
}
builder.append(", size: ").append(data != null ? data.length : -1);
builder.append("]");
return builder.toString();
}
}