/**
* Java Modular Image Synthesis Toolkit (JMIST)
* Copyright (C) 2008-2014 Bradley W. Kimmel
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package ca.eandb.jmist.framework.loader.ply;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import ca.eandb.util.io.LittleEndianDataInputStream;
/**
* A <code>DataReader</code> that reads binary data.
*/
final class BinaryDataReader implements DataReader {
/** The <code>DataInput</code> source to read from. */
private final DataInput input;
/**
* Creates a new <code>BinaryDataReader</code> (private, use factory
* methods to create instances).
* @param input The <code>DataInput</code> source to read from.
* @see #littleEndian(InputStream)
* @see #bigEndian(InputStream)
*/
private BinaryDataReader(DataInput input) {
this.input = input;
}
/**
* Creates a new <code>BinaryDataReader</code> that reads binary data in
* little-endian from the provided <code>InputStream</code>.
* @param in The <code>InputStream</code> to read from.
*/
public static BinaryDataReader littleEndian(InputStream in) {
return new BinaryDataReader(new LittleEndianDataInputStream(in));
}
/**
* Creates a new <code>BinaryDataReader</code> that reads binary data in
* big-endian from the provided <code>InputStream</code>.
* @param in The <code>InputStream</code> to read from.
*/
public static BinaryDataReader bigEndian(InputStream in) {
return new BinaryDataReader(new DataInputStream(in));
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.loader.ply.DataReader#readChar()
*/
@Override
public byte readChar() throws IOException {
return input.readByte();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.loader.ply.DataReader#readUnsignedChar()
*/
@Override
public int readUnsignedChar() throws IOException {
return input.readUnsignedByte();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.loader.ply.DataReader#readShort()
*/
@Override
public short readShort() throws IOException {
return input.readShort();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.loader.ply.DataReader#readUnsignedShort()
*/
@Override
public int readUnsignedShort() throws IOException {
return input.readUnsignedShort();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.loader.ply.DataReader#readInt()
*/
@Override
public int readInt() throws IOException {
return input.readInt();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.loader.ply.DataReader#readUnsignedInt()
*/
@Override
public long readUnsignedInt() throws IOException {
int signed = input.readInt();
return signed > 0 ? (long) signed : (0x100000000L + signed);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.loader.ply.DataReader#readFloat()
*/
@Override
public float readFloat() throws IOException {
return input.readFloat();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.loader.ply.DataReader#readDouble()
*/
@Override
public double readDouble() throws IOException {
return input.readDouble();
}
}