    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017package org.apache.commons.imaging.common;
    018
    019import java.io.IOException;
    020import java.io.OutputStream;
    021import java.nio.ByteOrder;
    022
    023public class BinaryOutputStream extends OutputStream {
    024    private final OutputStream os;
    025    // default byte order for Java, many file formats.
    026    private ByteOrder byteOrder = ByteOrder.BIG_ENDIAN;
    027    private int count;
    028
    029    public BinaryOutputStream(final OutputStream os, final ByteOrder byteOrder) {
    030        this.byteOrder = byteOrder;
    031        this.os = os;
    032    }
    033
    034    public BinaryOutputStream(final OutputStream os) {
    035        this.os = os;
    036    }
    037
    038    protected void setByteOrder(final ByteOrder byteOrder) {
    039        this.byteOrder = byteOrder;
    040    }
    041
    042    public ByteOrder getByteOrder() {
    043        return byteOrder;
    044    }
    045
    046    @Override
    047    public void write(final int i) throws IOException {
    048        os.write(i);
    049        count++;
    050    }
    051
    052    @Override
    053    public final void write(final byte[] bytes) throws IOException {
    054        os.write(bytes, 0, bytes.length);
    055        count += bytes.length;
    056    }
    057
    058    @Override
    059    public final void write(final byte[] bytes, final int offset, final int length) throws IOException {
    060        os.write(bytes, offset, length);
    061        count += length;
    062    }
    063
    064    @Override
    065    public void flush() throws IOException {
    066        os.flush();
    067    }
    068
    069    @Override
    070    public void close() throws IOException {
    071        os.close();
    072    }
    073
    074    public int getByteCount() {
    075        return count;
    076    }
    077
    078    public final void write4Bytes(final int value) throws IOException {
    079        if (byteOrder == ByteOrder.BIG_ENDIAN) {
    080            write(0xff & (value >> 24));
    081            write(0xff & (value >> 16));
    082            write(0xff & (value >> 8));
    083            write(0xff & value);
    084        } else {
    085            write(0xff & value);
    086            write(0xff & (value >> 8));
    087            write(0xff & (value >> 16));
    088            write(0xff & (value >> 24));
    089        }
    090    }
    091
    092    public final void write3Bytes(final int value) throws IOException {
    093        if (byteOrder == ByteOrder.BIG_ENDIAN) {
    094            write(0xff & (value >> 16));
    095            write(0xff & (value >> 8));
    096            write(0xff & value);
    097        } else {
    098            write(0xff & value);
    099            write(0xff & (value >> 8));
    100            write(0xff & (value >> 16));
    101        }
    102    }
    103
    104    public final void write2Bytes(final int value) throws IOException {
    105        if (byteOrder == ByteOrder.BIG_ENDIAN) {
    106            write(0xff & (value >> 8));
    107            write(0xff & value);
    108        } else {
    109            write(0xff & value);
    110            write(0xff & (value >> 8));
    111        }
    112    }
    113}