org.apache.commons.imaging.formats.tiff.write.TiffImageWriterLossy Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.imaging.formats.tiff.write;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteOrder;
import java.util.List;
import org.apache.commons.imaging.ImageWriteException;
import org.apache.commons.imaging.common.BinaryOutputStream;
import static org.apache.commons.imaging.formats.tiff.constants.TiffConstants.*;
public class TiffImageWriterLossy extends TiffImageWriterBase {
public TiffImageWriterLossy() {
// with default byte order
}
public TiffImageWriterLossy(final ByteOrder byteOrder) {
super(byteOrder);
}
@Override
public void write(final OutputStream os, final TiffOutputSet outputSet)
throws IOException, ImageWriteException {
final TiffOutputSummary outputSummary = validateDirectories(outputSet);
final List outputItems = outputSet
.getOutputItems(outputSummary);
updateOffsetsStep(outputItems);
outputSummary.updateOffsets(byteOrder);
final BinaryOutputStream bos = new BinaryOutputStream(os, byteOrder);
writeStep(bos, outputItems);
}
private void updateOffsetsStep(final List outputItems) {
int offset = TIFF_HEADER_SIZE;
for (TiffOutputItem outputItem : outputItems) {
outputItem.setOffset(offset);
final int itemLength = outputItem.getItemLength();
offset += itemLength;
final int remainder = imageDataPaddingLength(itemLength);
offset += remainder;
}
}
private void writeStep(final BinaryOutputStream bos,
final List outputItems) throws IOException,
ImageWriteException {
writeImageFileHeader(bos);
for (TiffOutputItem outputItem : outputItems) {
outputItem.writeItem(bos);
final int length = outputItem.getItemLength();
final int remainder = imageDataPaddingLength(length);
for (int j = 0; j < remainder; j++) {
bos.write(0);
}
}
}
}