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/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution 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 Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package com.jogamp.opengl.util.texture.spi;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.FilterOutputStream;
import java.io.OutputStream;
import java.io.IOException;
/**
* Little Endian Data Output Stream.
*
* This class implements an output stream filter to allow writing
* of java native datatypes to an output stream which has those
* native datatypes stored in a little endian byte order.<p>
*
* This is the sister class of the DataOutputStream which allows
* for writing of java native datatypes to an output stream with
* the datatypes stored in big endian byte order.<p>
*
* This class implements the minimum required and calls DataOutputStream
* for some of the required methods for DataOutput.<p>
*
* Not all methods are implemented due to lack of immediate requirement
* for that functionality. It is not clear if it is ever going to be
* functionally required to be able to read UTF data in a LittleEndianManner<p>
*
*/
public class LEDataOutputStream extends FilterOutputStream implements DataOutput
{
/**
* To reuse some of the non endian dependent methods from
* DataOutputStream's methods.
*/
DataOutputStream dataOut;
public LEDataOutputStream(final OutputStream out)
{
super(out);
dataOut = new DataOutputStream(out);
}
@Override
public void close() throws IOException
{
dataOut.close(); // better close as we create it.
// this will close underlying as well.
}
@Override
public synchronized final void write(final byte b[]) throws IOException
{
dataOut.write(b, 0, b.length);
}
@Override
public synchronized final void write(final byte b[], final int off, final int len) throws IOException
{
dataOut.write(b, off, len);
}
@Override
public final void write(final int b) throws IOException
{
dataOut.write(b);
}
@Override
public final void writeBoolean(final boolean v) throws IOException
{
dataOut.writeBoolean(v);
}
@Override
public final void writeByte(final int v) throws IOException
{
dataOut.writeByte(v);
}
/** Don't call this -- not implemented */
@Override
public final void writeBytes(final String s) throws IOException
{
throw new UnsupportedOperationException();
}
@Override
public final void writeChar(final int v) throws IOException
{
dataOut.writeChar(((v >> 8) & 0xff) |
((v & 0xff) << 8));
}
/** Don't call this -- not implemented */
@Override
public final void writeChars(final String s) throws IOException
{
throw new UnsupportedOperationException();
}
@Override
public final void writeDouble(final double v) throws IOException
{
writeLong(Double.doubleToRawLongBits(v));
}
@Override
public final void writeFloat(final float v) throws IOException
{
writeInt(Float.floatToRawIntBits(v));
}
@Override
public final void writeInt(final int v) throws IOException
{
dataOut.writeInt((v >>> 24) |
((v >>> 8) & 0xff00) |
((v << 8) & 0x00ff00) |
(v << 24));
}
@Override
public final void writeLong(final long v) throws IOException
{
writeInt((int) v);
writeInt((int) (v >>> 32));
}
@Override
public final void writeShort(final int v) throws IOException
{
dataOut.writeShort(((v >> 8) & 0xff) |
((v & 0xff) << 8));
}
/** Don't call this -- not implemented */
@Override
public final void writeUTF(final String s) throws IOException
{
throw new UnsupportedOperationException();
}
}
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