/*
* Created on Feb 5, 2008
* Created by Olivier Chalouhi
*
* Copyright 2008 Vuze, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License only.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
package com.aelitis.azureus.core.util.png;
import java.nio.ByteBuffer;
public class IHDRChunk extends CRCedChunk {
private static final byte[] type = {(byte) 73, (byte) 72, (byte) 68, (byte) 82};
private int width;
private int height;
public IHDRChunk(int width, int height) {
super(type);
this.width = width;
this.height = height;
}
public byte[] getContentPayload() {
ByteBuffer buffer = ByteBuffer.allocate(13);
//width : 4 bytes
buffer.putInt(width);
//height : 4 bytes
buffer.putInt(height);
//color depth : 1 byte
buffer.put((byte)8);
//color type : 1 byte
buffer.put((byte)0);
//compression method : 1 byte
buffer.put((byte)0);
//filter method : 1 byte
buffer.put((byte)0);
//interlace method : 1 byte
buffer.put((byte)0);
return buffer.array();
}
}