org.apache.xmlgraphics.image.codec.tiff.TIFFImageDecoder Maven / Gradle / Ivy
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* 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.
*/
/* $Id: TIFFImageDecoder.java 1732018 2016-02-24 04:51:06Z gadams $ */
package org.apache.xmlgraphics.image.codec.tiff;
import java.awt.image.RenderedImage;
import java.io.IOException;
import org.apache.xmlgraphics.image.codec.util.ImageDecoderImpl;
import org.apache.xmlgraphics.image.codec.util.PropertyUtil;
import org.apache.xmlgraphics.image.codec.util.SeekableStream;
/**
* A baseline TIFF reader. The reader has some functionality in addition to
* the baseline specifications for Bilevel images, for which the group 3 and
* group 4 decompression schemes have been implemented. Support for LZW
* decompression has also been added. Support for Horizontal differencing
* predictor decoding is also included, when used with LZW compression.
* However, this support is limited to data with bitsPerSample value of 8.
* When reading in RGB images, support for alpha and extraSamples being
* present has been added. Support for reading in images with 16 bit samples
* has been added. Support for the SampleFormat tag (signed samples as well
* as floating-point samples) has also been added. In all other cases, support
* is limited to Baseline specifications.
*
*
*/
public class TIFFImageDecoder extends ImageDecoderImpl {
// All the TIFF tags that we care about
public static final int TIFF_IMAGE_WIDTH = 256;
public static final int TIFF_IMAGE_LENGTH = 257;
public static final int TIFF_BITS_PER_SAMPLE = 258;
public static final int TIFF_COMPRESSION = 259;
public static final int TIFF_PHOTOMETRIC_INTERPRETATION = 262;
public static final int TIFF_FILL_ORDER = 266;
public static final int TIFF_STRIP_OFFSETS = 273;
public static final int TIFF_SAMPLES_PER_PIXEL = 277;
public static final int TIFF_ROWS_PER_STRIP = 278;
public static final int TIFF_STRIP_BYTE_COUNTS = 279;
public static final int TIFF_X_RESOLUTION = 282;
public static final int TIFF_Y_RESOLUTION = 283;
public static final int TIFF_PLANAR_CONFIGURATION = 284;
public static final int TIFF_T4_OPTIONS = 292;
public static final int TIFF_T6_OPTIONS = 293;
public static final int TIFF_RESOLUTION_UNIT = 296;
public static final int TIFF_PREDICTOR = 317;
public static final int TIFF_COLORMAP = 320;
public static final int TIFF_TILE_WIDTH = 322;
public static final int TIFF_TILE_LENGTH = 323;
public static final int TIFF_TILE_OFFSETS = 324;
public static final int TIFF_TILE_BYTE_COUNTS = 325;
public static final int TIFF_EXTRA_SAMPLES = 338;
public static final int TIFF_SAMPLE_FORMAT = 339;
public static final int TIFF_S_MIN_SAMPLE_VALUE = 340;
public static final int TIFF_S_MAX_SAMPLE_VALUE = 341;
public static final int TIFF_ICC_PROFILE = 34675;
public TIFFImageDecoder(SeekableStream input, TIFFDecodeParam param) {
super(input, param);
}
public int getNumPages() throws IOException {
return TIFFDirectory.getNumDirectories(input);
}
public RenderedImage decodeAsRenderedImage(int page) throws IOException {
if ((page < 0) || (page >= getNumPages())) {
throw new IOException(PropertyUtil.getString("TIFFImageDecoder0"));
}
return new TIFFImage(input, (TIFFDecodeParam) param, page);
}
}