Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* 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 java.io.DataInput;
import java.io.IOException;
/**
* PSDHeader
*
* @author Harald Kuhr
* @author last modified by $Author: haraldk$
* @version $Id: PSDHeader.java,v 1.0 Apr 29, 2008 5:18:22 PM haraldk Exp$
*/
final class PSDHeader {
// The header is 26 bytes in length and is structured as follows:
//
// typedef struct _PSD_HEADER
// {
// BYTE Signature[4]; /* File ID "8BPS" */
// WORD Version; /* Version number, always 1. 2 for PSB */
// BYTE Reserved[6]; /* Reserved, must be zeroed */
// WORD Channels; /* Number of color channels (1-56) including alpha
// channels */
// LONG Rows; /* Height of image in pixels (1-30000/1-300000 for PSB) */
// LONG Columns; /* Width of image in pixels (1-30000/1-300000 for PSB) */
// WORD Depth; /* Number of bits per channel (1, 8, 16 or 32) */
// WORD Mode; /* Color mode */
// } PSD_HEADER;
private static final int PSD_MAX_SIZE = 30000;
private static final int PSB_MAX_SIZE = 300000;
final short channels;
final int width;
final int height;
final short bits;
final short mode;
final boolean largeFormat;
PSDHeader(final DataInput pInput) throws IOException {
int signature = pInput.readInt();
if (signature != PSD.SIGNATURE_8BPS) {
throw new IIOException("Not a PSD document, expected signature \"8BPS\": \"" + PSDUtil.intToStr(signature) + "\" (0x" + Integer.toHexString(signature) + ")");
}
int version = pInput.readUnsignedShort();
switch (version) {
case PSD.VERSION_PSD:
largeFormat = false;
break;
case PSD.VERSION_PSB:
largeFormat = true;
break;
default:
throw new IIOException(String.format("Unknown PSD version, expected 1 or 2: 0x%08x", version));
}
byte[] reserved = new byte[6];
pInput.readFully(reserved); // We don't really care
channels = pInput.readShort();
if (channels < 1 || channels > 56) {
throw new IIOException(String.format("Unsupported number of channels for PSD: %d", channels));
}
height = pInput.readInt(); // Rows
width = pInput.readInt(); // Columns
bits = pInput.readShort();
switch (bits) {
case 1:
case 8:
case 16:
case 32:
break;
default:
throw new IIOException(String.format("Unsupported bit depth for PSD: %d bits", bits));
}
mode = pInput.readShort();
switch (mode) {
case PSD.COLOR_MODE_BITMAP:
case PSD.COLOR_MODE_GRAYSCALE:
case PSD.COLOR_MODE_INDEXED:
case PSD.COLOR_MODE_RGB:
case PSD.COLOR_MODE_CMYK:
case PSD.COLOR_MODE_MULTICHANNEL:
case PSD.COLOR_MODE_DUOTONE:
case PSD.COLOR_MODE_LAB:
break;
default:
throw new IIOException(String.format("Unsupported color mode for PSD: %d", mode));
}
}
@Override
public String toString() {
return new StringBuilder(getClass().getSimpleName())
.append("[version: ")
.append(largeFormat ? "2" : "1")
.append(", channels: ")
.append(channels)
.append(", width: ")
.append(width)
.append(", height: ")
.append(height)
.append(", depth: ")
.append(bits)
.append(", mode: ")
.append(mode)
.append(" (")
.append(modeAsString())
.append(")]")
.toString();
}
int getMaxSize() {
return largeFormat ? PSB_MAX_SIZE : PSD_MAX_SIZE;
}
boolean hasValidDimensions() {
return width <= getMaxSize() && height <= getMaxSize();
}
private String modeAsString() {
switch (mode) {
case PSD.COLOR_MODE_BITMAP:
return "Monochrome";
case PSD.COLOR_MODE_GRAYSCALE:
return "Grayscale";
case PSD.COLOR_MODE_INDEXED:
return "Indexed";
case PSD.COLOR_MODE_RGB:
return "RGB";
case PSD.COLOR_MODE_CMYK:
return "CMYK";
case PSD.COLOR_MODE_MULTICHANNEL:
return "Multi channel";
case PSD.COLOR_MODE_DUOTONE:
return "Duotone";
case PSD.COLOR_MODE_LAB:
return "Lab color";
default:
return "Unkown mode";
}
}
}
