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Apache Commons Imaging (previously Sanselan) is a pure-Java image library.
/*
* 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;
import static org.apache.commons.imaging.formats.tiff.constants.TiffConstants.TIFF_COMPRESSION_CCITT_1D;
import static org.apache.commons.imaging.formats.tiff.constants.TiffConstants.TIFF_COMPRESSION_CCITT_GROUP_3;
import static org.apache.commons.imaging.formats.tiff.constants.TiffConstants.TIFF_COMPRESSION_CCITT_GROUP_4;
import static org.apache.commons.imaging.formats.tiff.constants.TiffConstants.TIFF_COMPRESSION_JPEG;
import static org.apache.commons.imaging.formats.tiff.constants.TiffConstants.TIFF_COMPRESSION_LZW;
import static org.apache.commons.imaging.formats.tiff.constants.TiffConstants.TIFF_COMPRESSION_PACKBITS;
import static org.apache.commons.imaging.formats.tiff.constants.TiffConstants.TIFF_COMPRESSION_UNCOMPRESSED_1;
import static org.apache.commons.imaging.formats.tiff.constants.TiffConstants.TIFF_COMPRESSION_UNCOMPRESSED_2;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.nio.ByteOrder;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.commons.imaging.FormatCompliance;
import org.apache.commons.imaging.ImageFormat;
import org.apache.commons.imaging.ImageFormats;
import org.apache.commons.imaging.ImageInfo;
import org.apache.commons.imaging.ImageParser;
import org.apache.commons.imaging.ImageReadException;
import org.apache.commons.imaging.ImageWriteException;
import org.apache.commons.imaging.common.ImageBuilder;
import org.apache.commons.imaging.common.ImageMetadata;
import org.apache.commons.imaging.common.XmpEmbeddable;
import org.apache.commons.imaging.common.bytesource.ByteSource;
import org.apache.commons.imaging.formats.tiff.TiffDirectory.ImageDataElement;
import org.apache.commons.imaging.formats.tiff.constants.TiffConstants;
import org.apache.commons.imaging.formats.tiff.constants.TiffEpTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants;
import org.apache.commons.imaging.formats.tiff.datareaders.ImageDataReader;
import org.apache.commons.imaging.formats.tiff.photometricinterpreters.PhotometricInterpreter;
import org.apache.commons.imaging.formats.tiff.photometricinterpreters.PhotometricInterpreterBiLevel;
import org.apache.commons.imaging.formats.tiff.photometricinterpreters.PhotometricInterpreterCieLab;
import org.apache.commons.imaging.formats.tiff.photometricinterpreters.PhotometricInterpreterCmyk;
import org.apache.commons.imaging.formats.tiff.photometricinterpreters.PhotometricInterpreterLogLuv;
import org.apache.commons.imaging.formats.tiff.photometricinterpreters.PhotometricInterpreterPalette;
import org.apache.commons.imaging.formats.tiff.photometricinterpreters.PhotometricInterpreterRgb;
import org.apache.commons.imaging.formats.tiff.photometricinterpreters.PhotometricInterpreterYCbCr;
import org.apache.commons.imaging.formats.tiff.write.TiffImageWriterLossy;
public class TiffImageParser extends ImageParser implements XmpEmbeddable {
private static final String DEFAULT_EXTENSION = ".tif";
private static final String[] ACCEPTED_EXTENSIONS = { ".tif", ".tiff", };
@Override
public String getName() {
return "Tiff-Custom";
}
@Override
public String getDefaultExtension() {
return DEFAULT_EXTENSION;
}
@Override
protected String[] getAcceptedExtensions() {
return ACCEPTED_EXTENSIONS;
}
@Override
protected ImageFormat[] getAcceptedTypes() {
return new ImageFormat[] { ImageFormats.TIFF, //
};
}
@Override
public byte[] getICCProfileBytes(final ByteSource byteSource, final Map params)
throws ImageReadException, IOException {
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final TiffContents contents = new TiffReader(isStrict(params)).readFirstDirectory(
byteSource, params, false, formatCompliance);
final TiffDirectory directory = contents.directories.get(0);
return directory.getFieldValue(TiffEpTagConstants.EXIF_TAG_INTER_COLOR_PROFILE,
false);
}
@Override
public Dimension getImageSize(final ByteSource byteSource, final Map params)
throws ImageReadException, IOException {
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final TiffContents contents = new TiffReader(isStrict(params)).readFirstDirectory(
byteSource, params, false, formatCompliance);
final TiffDirectory directory = contents.directories.get(0);
final TiffField widthField = directory.findField(
TiffTagConstants.TIFF_TAG_IMAGE_WIDTH, true);
final TiffField heightField = directory.findField(
TiffTagConstants.TIFF_TAG_IMAGE_LENGTH, true);
if ((widthField == null) || (heightField == null)) {
throw new ImageReadException("TIFF image missing size info.");
}
final int height = heightField.getIntValue();
final int width = widthField.getIntValue();
return new Dimension(width, height);
}
@Override
public ImageMetadata getMetadata(final ByteSource byteSource, final Map params)
throws ImageReadException, IOException {
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final TiffReader tiffReader = new TiffReader(isStrict(params));
final TiffContents contents = tiffReader.readContents(byteSource, params,
formatCompliance);
final List directories = contents.directories;
final TiffImageMetadata result = new TiffImageMetadata(contents);
for (final TiffDirectory dir : directories) {
final TiffImageMetadata.Directory metadataDirectory = new TiffImageMetadata.Directory(
tiffReader.getByteOrder(), dir);
final List entries = dir.getDirectoryEntries();
for (final TiffField entry : entries) {
metadataDirectory.add(entry);
}
result.add(metadataDirectory);
}
return result;
}
@Override
public ImageInfo getImageInfo(final ByteSource byteSource, final Map params)
throws ImageReadException, IOException {
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final TiffContents contents = new TiffReader(isStrict(params)).readDirectories(
byteSource, false, formatCompliance);
final TiffDirectory directory = contents.directories.get(0);
final TiffField widthField = directory.findField(
TiffTagConstants.TIFF_TAG_IMAGE_WIDTH, true);
final TiffField heightField = directory.findField(
TiffTagConstants.TIFF_TAG_IMAGE_LENGTH, true);
if ((widthField == null) || (heightField == null)) {
throw new ImageReadException("TIFF image missing size info.");
}
final int height = heightField.getIntValue();
final int width = widthField.getIntValue();
// -------------------
final TiffField resolutionUnitField = directory.findField(
TiffTagConstants.TIFF_TAG_RESOLUTION_UNIT);
int resolutionUnit = 2; // Inch
if ((resolutionUnitField != null)
&& (resolutionUnitField.getValue() != null)) {
resolutionUnit = resolutionUnitField.getIntValue();
}
double unitsPerInch = -1;
switch (resolutionUnit) {
case 1:
break;
case 2: // Inch
unitsPerInch = 1.0;
break;
case 3: // Centimeter
unitsPerInch = 2.54;
break;
default:
break;
}
int physicalWidthDpi = -1;
float physicalWidthInch = -1;
int physicalHeightDpi = -1;
float physicalHeightInch = -1;
if (unitsPerInch > 0) {
final TiffField xResolutionField = directory.findField(
TiffTagConstants.TIFF_TAG_XRESOLUTION);
final TiffField yResolutionField = directory.findField(
TiffTagConstants.TIFF_TAG_YRESOLUTION);
if ((xResolutionField != null)
&& (xResolutionField.getValue() != null)) {
final double xResolutionPixelsPerUnit = xResolutionField.getDoubleValue();
physicalWidthDpi = (int) Math.round((xResolutionPixelsPerUnit * unitsPerInch));
physicalWidthInch = (float) (width / (xResolutionPixelsPerUnit * unitsPerInch));
}
if ((yResolutionField != null)
&& (yResolutionField.getValue() != null)) {
final double yResolutionPixelsPerUnit = yResolutionField.getDoubleValue();
physicalHeightDpi = (int) Math.round((yResolutionPixelsPerUnit * unitsPerInch));
physicalHeightInch = (float) (height / (yResolutionPixelsPerUnit * unitsPerInch));
}
}
// -------------------
final TiffField bitsPerSampleField = directory.findField(TiffTagConstants.TIFF_TAG_BITS_PER_SAMPLE);
int bitsPerSample = 1;
if ((bitsPerSampleField != null)
&& (bitsPerSampleField.getValue() != null)) {
bitsPerSample = bitsPerSampleField.getIntValueOrArraySum();
}
final int bitsPerPixel = bitsPerSample; // assume grayscale;
// dunno if this handles colormapped images correctly.
// -------------------
final List entries = directory.entries;
final List comments = new ArrayList<>(entries.size());
for (final TiffField field : entries) {
final String comment = field.toString();
comments.add(comment);
}
final ImageFormat format = ImageFormats.TIFF;
final String formatName = "TIFF Tag-based Image File Format";
final String mimeType = "image/tiff";
final int numberOfImages = contents.directories.size();
// not accurate ... only reflects first
final boolean progressive = false;
// is TIFF ever interlaced/progressive?
final String formatDetails = "Tiff v." + contents.header.tiffVersion;
final boolean transparent = false; // TODO: wrong
boolean usesPalette = false;
final TiffField colorMapField = directory.findField(TiffTagConstants.TIFF_TAG_COLOR_MAP);
if (colorMapField != null) {
usesPalette = true;
}
final ImageInfo.ColorType colorType = ImageInfo.ColorType.RGB;
final short compressionFieldValue;
if (directory.findField(TiffTagConstants.TIFF_TAG_COMPRESSION) != null) {
compressionFieldValue = directory.getFieldValue(TiffTagConstants.TIFF_TAG_COMPRESSION);
} else {
compressionFieldValue = TIFF_COMPRESSION_UNCOMPRESSED_1;
}
final int compression = 0xffff & compressionFieldValue;
ImageInfo.CompressionAlgorithm compressionAlgorithm;
switch (compression) {
case TIFF_COMPRESSION_UNCOMPRESSED_1:
compressionAlgorithm = ImageInfo.CompressionAlgorithm.NONE;
break;
case TIFF_COMPRESSION_CCITT_1D:
compressionAlgorithm = ImageInfo.CompressionAlgorithm.CCITT_1D;
break;
case TIFF_COMPRESSION_CCITT_GROUP_3:
compressionAlgorithm = ImageInfo.CompressionAlgorithm.CCITT_GROUP_3;
break;
case TIFF_COMPRESSION_CCITT_GROUP_4:
compressionAlgorithm = ImageInfo.CompressionAlgorithm.CCITT_GROUP_4;
break;
case TIFF_COMPRESSION_LZW:
compressionAlgorithm = ImageInfo.CompressionAlgorithm.LZW;
break;
case TIFF_COMPRESSION_JPEG:
compressionAlgorithm = ImageInfo.CompressionAlgorithm.JPEG;
break;
case TIFF_COMPRESSION_UNCOMPRESSED_2:
compressionAlgorithm = ImageInfo.CompressionAlgorithm.NONE;
break;
case TIFF_COMPRESSION_PACKBITS:
compressionAlgorithm = ImageInfo.CompressionAlgorithm.PACKBITS;
break;
default:
compressionAlgorithm = ImageInfo.CompressionAlgorithm.UNKNOWN;
break;
}
final ImageInfo result = new ImageInfo(formatDetails, bitsPerPixel, comments,
format, formatName, height, mimeType, numberOfImages,
physicalHeightDpi, physicalHeightInch, physicalWidthDpi,
physicalWidthInch, width, progressive, transparent,
usesPalette, colorType, compressionAlgorithm);
return result;
}
@Override
public String getXmpXml(final ByteSource byteSource, final Map params)
throws ImageReadException, IOException {
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final TiffContents contents = new TiffReader(isStrict(params)).readDirectories(
byteSource, false, formatCompliance);
final TiffDirectory directory = contents.directories.get(0);
final byte[] bytes = directory.getFieldValue(TiffTagConstants.TIFF_TAG_XMP,
false);
if (bytes == null) {
return null;
}
// segment data is UTF-8 encoded xml.
return new String(bytes, StandardCharsets.UTF_8);
}
@Override
public boolean dumpImageFile(final PrintWriter pw, final ByteSource byteSource)
throws ImageReadException, IOException {
try {
pw.println("tiff.dumpImageFile");
{
final ImageInfo imageData = getImageInfo(byteSource);
if (imageData == null) {
return false;
}
imageData.toString(pw, "");
}
pw.println("");
// try
{
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final Map params = null;
final TiffContents contents = new TiffReader(true).readContents(
byteSource, params, formatCompliance);
final List directories = contents.directories;
if (directories == null) {
return false;
}
for (int d = 0; d < directories.size(); d++) {
final TiffDirectory directory = directories.get(d);
final List entries = directory.entries;
if (entries == null) {
return false;
}
// Debug.debug("directory offset", directory.offset);
for (final TiffField field : entries) {
field.dump(pw, Integer.toString(d));
}
}
pw.println("");
}
// catch (Exception e)
// {
// Debug.debug(e);
// pw.println("");
// return false;
// }
return true;
} finally {
pw.println("");
}
}
@Override
public FormatCompliance getFormatCompliance(final ByteSource byteSource)
throws ImageReadException, IOException {
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final Map params = null;
new TiffReader(isStrict(params)).readContents(byteSource, params,
formatCompliance);
return formatCompliance;
}
public List collectRawImageData(final ByteSource byteSource, final Map params)
throws ImageReadException, IOException {
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final TiffContents contents = new TiffReader(isStrict(params)).readDirectories(
byteSource, true, formatCompliance);
final List result = new ArrayList<>();
for (int i = 0; i < contents.directories.size(); i++) {
final TiffDirectory directory = contents.directories.get(i);
final List dataElements = directory.getTiffRawImageDataElements();
for (final ImageDataElement element : dataElements) {
final byte[] bytes = byteSource.getBlock(element.offset,
element.length);
result.add(bytes);
}
}
return result;
}
/**
* Gets a buffered image specified by the byte source.
* The TiffImageParser class features support for a number of options that
* are unique to the TIFF format. These options can be specified by
* supplying the appropriate parameters using the keys from the
* TiffConstants class and the params argument for this method.
*
* Loading Partial Images
*
* The TIFF parser includes support for loading partial images without
* committing significantly more memory resources than are necessary
* to store the image. This feature is useful for conserving memory
* in applications that require a relatively small sub image from a
* very large TIFF file. The specifications for partial images are
* as follows:
*
*
* HashMap<String, Object> params = new HashMap<String, Object>();
* params.put(TiffConstants.PARAM_KEY_SUBIMAGE_X, new Integer(x));
* params.put(TiffConstants.PARAM_KEY_SUBIMAGE_Y, new Integer(y));
* params.put(TiffConstants.PARAM_KEY_SUBIMAGE_WIDTH, new Integer(width));
* params.put(TiffConstants.PARAM_KEY_SUBIMAGE_HEIGHT, new Integer(height));
*
*
* Note that the arguments x, y, width, and height must specify a
* valid rectangular region that is fully contained within the
* source TIFF image.
*
* @param byteSource A valid instance of ByteSource
* @param params Optional instructions for special-handling or
* interpretation of the input data (null objects are permitted and
* must be supported by implementations).
* @return A valid instance of BufferedImage.
* @throws ImageReadException In the event that the specified
* content does not conform to the format of the specific parser
* implementation.
* @throws IOException In the event of unsuccessful read or
* access operation.
*/
@Override
public BufferedImage getBufferedImage(final ByteSource byteSource, final Map params)
throws ImageReadException, IOException {
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final TiffReader reader = new TiffReader(isStrict(params));
final TiffContents contents = reader.readFirstDirectory(byteSource, params,
true, formatCompliance);
final ByteOrder byteOrder = reader.getByteOrder();
final TiffDirectory directory = contents.directories.get(0);
final BufferedImage result = directory.getTiffImage(byteOrder, params);
if (null == result) {
throw new ImageReadException("TIFF does not contain an image.");
}
return result;
}
@Override
public List getAllBufferedImages(final ByteSource byteSource)
throws ImageReadException, IOException {
final FormatCompliance formatCompliance = FormatCompliance.getDefault();
final TiffReader tiffReader = new TiffReader(true);
final TiffContents contents = tiffReader.readDirectories(byteSource, true,
formatCompliance);
final List results = new ArrayList<>();
for (int i = 0; i < contents.directories.size(); i++) {
final TiffDirectory directory = contents.directories.get(i);
final BufferedImage result = directory.getTiffImage(
tiffReader.getByteOrder(), null);
if (result != null) {
results.add(result);
}
}
return results;
}
private Integer getIntegerParameter(
final String key, final Mapparams)
throws ImageReadException {
if (params == null) {
return null;
}
if (!params.containsKey(key)) {
return null;
}
final Object obj = params.get(key);
if (obj instanceof Integer) {
return (Integer) obj;
}
throw new ImageReadException("Non-Integer parameter " + key);
}
private Rectangle checkForSubImage(
final Map params)
throws ImageReadException {
final Integer ix0 = getIntegerParameter(TiffConstants.PARAM_KEY_SUBIMAGE_X, params);
final Integer iy0 = getIntegerParameter(TiffConstants.PARAM_KEY_SUBIMAGE_Y, params);
final Integer iwidth = getIntegerParameter(TiffConstants.PARAM_KEY_SUBIMAGE_WIDTH, params);
final Integer iheight = getIntegerParameter(TiffConstants.PARAM_KEY_SUBIMAGE_HEIGHT, params);
if (ix0 == null && iy0 == null && iwidth == null && iheight == null) {
return null;
}
final StringBuilder sb = new StringBuilder(32);
if (ix0 == null) {
sb.append(" x0,");
}
if (iy0 == null) {
sb.append(" y0,");
}
if (iwidth == null) {
sb.append(" width,");
}
if (iheight == null) {
sb.append(" height,");
}
if (sb.length() > 0) {
sb.setLength(sb.length() - 1);
throw new ImageReadException("Incomplete subimage parameters, missing" + sb.toString());
}
return new Rectangle(ix0, iy0, iwidth, iheight);
}
protected BufferedImage getBufferedImage(final TiffDirectory directory,
final ByteOrder byteOrder, final Map params)
throws ImageReadException, IOException {
final List entries = directory.entries;
if (entries == null) {
throw new ImageReadException("TIFF missing entries");
}
final int photometricInterpretation = 0xffff & directory.getFieldValue(
TiffTagConstants.TIFF_TAG_PHOTOMETRIC_INTERPRETATION);
final short compressionFieldValue;
if (directory.findField(TiffTagConstants.TIFF_TAG_COMPRESSION) != null) {
compressionFieldValue = directory.getFieldValue(TiffTagConstants.TIFF_TAG_COMPRESSION);
} else {
compressionFieldValue = TIFF_COMPRESSION_UNCOMPRESSED_1;
}
final int compression = 0xffff & compressionFieldValue;
final int width = directory.getSingleFieldValue(TiffTagConstants.TIFF_TAG_IMAGE_WIDTH);
final int height = directory.getSingleFieldValue(TiffTagConstants.TIFF_TAG_IMAGE_LENGTH);
Rectangle subImage = checkForSubImage(params);
if (subImage != null) {
// Check for valid subimage specification. The following checks
// are consistent with BufferedImage.getSubimage()
if (subImage.width <= 0) {
throw new ImageReadException("negative or zero subimage width");
}
if (subImage.height <= 0) {
throw new ImageReadException("negative or zero subimage height");
}
if (subImage.x < 0 || subImage.x >= width) {
throw new ImageReadException("subimage x is outside raster");
}
if (subImage.x + subImage.width > width) {
throw new ImageReadException("subimage (x+width) is outside raster");
}
if (subImage.y < 0 || subImage.y >= height) {
throw new ImageReadException("subimage y is outside raster");
}
if (subImage.y + subImage.height > height) {
throw new ImageReadException("subimage (y+height) is outside raster");
}
// if the subimage is just the same thing as the whole
// image, suppress the subimage processing
if (subImage.x == 0
&& subImage.y == 0
&& subImage.width == width
&& subImage.height == height) {
subImage = null;
}
}
int samplesPerPixel = 1;
final TiffField samplesPerPixelField = directory.findField(
TiffTagConstants.TIFF_TAG_SAMPLES_PER_PIXEL);
if (samplesPerPixelField != null) {
samplesPerPixel = samplesPerPixelField.getIntValue();
}
int[] bitsPerSample = { 1 };
int bitsPerPixel = samplesPerPixel;
final TiffField bitsPerSampleField = directory.findField(
TiffTagConstants.TIFF_TAG_BITS_PER_SAMPLE);
if (bitsPerSampleField != null) {
bitsPerSample = bitsPerSampleField.getIntArrayValue();
bitsPerPixel = bitsPerSampleField.getIntValueOrArraySum();
}
// int bitsPerPixel = getTagAsValueOrArraySum(entries,
// TIFF_TAG_BITS_PER_SAMPLE);
int predictor = -1;
{
// dumpOptionalNumberTag(entries, TIFF_TAG_FILL_ORDER);
// dumpOptionalNumberTag(entries, TIFF_TAG_FREE_BYTE_COUNTS);
// dumpOptionalNumberTag(entries, TIFF_TAG_FREE_OFFSETS);
// dumpOptionalNumberTag(entries, TIFF_TAG_ORIENTATION);
// dumpOptionalNumberTag(entries, TIFF_TAG_PLANAR_CONFIGURATION);
final TiffField predictorField = directory.findField(
TiffTagConstants.TIFF_TAG_PREDICTOR);
if (null != predictorField) {
predictor = predictorField.getIntValueOrArraySum();
}
}
if (samplesPerPixel != bitsPerSample.length) {
throw new ImageReadException("Tiff: samplesPerPixel ("
+ samplesPerPixel + ")!=fBitsPerSample.length ("
+ bitsPerSample.length + ")");
}
PhotometricInterpreter photometricInterpreter;
Object test = params == null
? null
: params.get(TiffConstants.PARAM_KEY_CUSTOM_PHOTOMETRIC_INTERPRETER);
if (test instanceof PhotometricInterpreter) {
photometricInterpreter = (PhotometricInterpreter) test;
} else {
photometricInterpreter = getPhotometricInterpreter(
directory, photometricInterpretation, bitsPerPixel,
bitsPerSample, predictor, samplesPerPixel, width, height);
}
final TiffImageData imageData = directory.getTiffImageData();
final ImageDataReader dataReader = imageData.getDataReader(directory,
photometricInterpreter, bitsPerPixel, bitsPerSample, predictor,
samplesPerPixel, width, height, compression, byteOrder);
BufferedImage result = null;
if (subImage != null) {
result = dataReader.readImageData(subImage);
} else {
final boolean hasAlpha = false;
final ImageBuilder imageBuilder = new ImageBuilder(width, height, hasAlpha);
dataReader.readImageData(imageBuilder);
result = imageBuilder.getBufferedImage();
}
return result;
}
private PhotometricInterpreter getPhotometricInterpreter(
final TiffDirectory directory, final int photometricInterpretation,
final int bitsPerPixel, final int[] bitsPerSample, final int predictor,
final int samplesPerPixel, final int width, final int height)
throws ImageReadException {
switch (photometricInterpretation) {
case 0:
case 1:
final boolean invert = photometricInterpretation == 0;
return new PhotometricInterpreterBiLevel(samplesPerPixel,
bitsPerSample, predictor, width, height, invert);
case 3: {
// Palette
final int[] colorMap = directory.findField(
TiffTagConstants.TIFF_TAG_COLOR_MAP, true).getIntArrayValue();
final int expectedColormapSize = 3 * (1 << bitsPerPixel);
if (colorMap.length != expectedColormapSize) {
throw new ImageReadException("Tiff: fColorMap.length ("
+ colorMap.length + ")!=expectedColormapSize ("
+ expectedColormapSize + ")");
}
return new PhotometricInterpreterPalette(samplesPerPixel,
bitsPerSample, predictor, width, height, colorMap);
}
case 2: // RGB
return new PhotometricInterpreterRgb(samplesPerPixel,
bitsPerSample, predictor, width, height);
case 5: // CMYK
return new PhotometricInterpreterCmyk(samplesPerPixel,
bitsPerSample, predictor, width, height);
case 6: {
// final double yCbCrCoefficients[] = directory.findField(
// TiffTagConstants.TIFF_TAG_YCBCR_COEFFICIENTS, true)
// .getDoubleArrayValue();
//
// final int yCbCrPositioning[] = directory.findField(
// TiffTagConstants.TIFF_TAG_YCBCR_POSITIONING, true)
// .getIntArrayValue();
// final int yCbCrSubSampling[] = directory.findField(
// TiffTagConstants.TIFF_TAG_YCBCR_SUB_SAMPLING, true)
// .getIntArrayValue();
//
// final double referenceBlackWhite[] = directory.findField(
// TiffTagConstants.TIFF_TAG_REFERENCE_BLACK_WHITE, true)
// .getDoubleArrayValue();
return new PhotometricInterpreterYCbCr(samplesPerPixel,
bitsPerSample, predictor, width,
height);
}
case 8:
return new PhotometricInterpreterCieLab(samplesPerPixel,
bitsPerSample, predictor, width, height);
case 32844:
case 32845: {
// final boolean yonly = (photometricInterpretation == 32844);
return new PhotometricInterpreterLogLuv(samplesPerPixel,
bitsPerSample, predictor, width, height);
}
default:
throw new ImageReadException(
"TIFF: Unknown fPhotometricInterpretation: "
+ photometricInterpretation);
}
}
@Override
public void writeImage(final BufferedImage src, final OutputStream os, final Map params)
throws ImageWriteException, IOException {
new TiffImageWriterLossy().writeImage(src, os, params);
}
/**
* Reads the content of a TIFF file that contains floating-point data
* samples.
*
* If desired, sub-image data can be read from the file by using a Java Map
* instance to specify the subsection of the image that is required. The
* following code illustrates the approach:
*
* int x; // coordinate (column) of corner of sub-image
* int y; // coordinate (row) of corner of sub-image
* int width; // width of sub-image
* int height; // height of sub-image
*
* Map<String, Object>params = new HashMap<>();
* params.put(TiffConstants.PARAM_KEY_SUBIMAGE_X, x);
* params.put(TiffConstants.PARAM_KEY_SUBIMAGE_Y, y);
* params.put(TiffConstants.PARAM_KEY_SUBIMAGE_WIDTH, width);
* params.put(TiffConstants.PARAM_KEY_SUBIMAGE_HEIGHT, height);
* TiffRasterData raster =
* readFloatingPointRasterData(directory, byteOrder, params);
*
*
* @param directory the TIFF directory pointing to the data to be extracted
* (TIFF files may contain multiple directories)
* @param byteOrder the byte order of the data to be extracted
* @param params an optional parameter map instance
* @return a valid instance
* @throws ImageReadException in the event of incompatible or malformed data
* @throws IOException in the event of an I/O error
*/
TiffRasterData getFloatingPointRasterData(
final TiffDirectory directory,
final ByteOrder byteOrder,
final Map params)
throws ImageReadException, IOException {
final List entries = directory.entries;
if (entries == null) {
throw new ImageReadException("TIFF missing entries");
}
short[] sSampleFmt = directory.getFieldValue(
TiffTagConstants.TIFF_TAG_SAMPLE_FORMAT, true);
if (sSampleFmt[0] != TiffTagConstants.SAMPLE_FORMAT_VALUE_IEEE_FLOATING_POINT) {
throw new ImageReadException("TIFF does not provide floating-point data");
}
int samplesPerPixel = 1;
final TiffField samplesPerPixelField = directory.findField(
TiffTagConstants.TIFF_TAG_SAMPLES_PER_PIXEL);
if (samplesPerPixelField != null) {
samplesPerPixel = samplesPerPixelField.getIntValue();
}
if (samplesPerPixel != 1) {
throw new ImageReadException(
"TIFF floating-point data uses unsupported samples per pixel: "
+ samplesPerPixel);
}
int[] bitsPerSample = {1};
int bitsPerPixel = samplesPerPixel;
final TiffField bitsPerSampleField = directory.findField(
TiffTagConstants.TIFF_TAG_BITS_PER_SAMPLE);
if (bitsPerSampleField != null) {
bitsPerSample = bitsPerSampleField.getIntArrayValue();
bitsPerPixel = bitsPerSampleField.getIntValueOrArraySum();
}
if (bitsPerPixel != 32 && bitsPerPixel != 64) {
throw new ImageReadException(
"TIFF floating-point data uses unsupported bits-per-pixel: "
+ bitsPerPixel);
}
final short compressionFieldValue;
if (directory.findField(TiffTagConstants.TIFF_TAG_COMPRESSION) != null) {
compressionFieldValue
= directory.getFieldValue(TiffTagConstants.TIFF_TAG_COMPRESSION);
} else {
compressionFieldValue = TIFF_COMPRESSION_UNCOMPRESSED_1;
}
final int compression = 0xffff & compressionFieldValue;
final int width
= directory.getSingleFieldValue(TiffTagConstants.TIFF_TAG_IMAGE_WIDTH);
final int height
= directory.getSingleFieldValue(TiffTagConstants.TIFF_TAG_IMAGE_LENGTH);
Rectangle subImage = checkForSubImage(params);
if (subImage != null) {
// Check for valid subimage specification. The following checks
// are consistent with BufferedImage.getSubimage()
if (subImage.width <= 0) {
throw new ImageReadException("negative or zero subimage width");
}
if (subImage.height <= 0) {
throw new ImageReadException("negative or zero subimage height");
}
if (subImage.x < 0 || subImage.x >= width) {
throw new ImageReadException("subimage x is outside raster");
}
if (subImage.x + subImage.width > width) {
throw new ImageReadException("subimage (x+width) is outside raster");
}
if (subImage.y < 0 || subImage.y >= height) {
throw new ImageReadException("subimage y is outside raster");
}
if (subImage.y + subImage.height > height) {
throw new ImageReadException("subimage (y+height) is outside raster");
}
// if the subimage is just the same thing as the whole
// image, suppress the subimage processing
if (subImage.x == 0
&& subImage.y == 0
&& subImage.width == width
&& subImage.height == height) {
subImage = null;
}
}
// int bitsPerPixel = getTagAsValueOrArraySum(entries,
// TIFF_TAG_BITS_PER_SAMPLE);
int predictor = -1;
{
// dumpOptionalNumberTag(entries, TIFF_TAG_FILL_ORDER);
// dumpOptionalNumberTag(entries, TIFF_TAG_FREE_BYTE_COUNTS);
// dumpOptionalNumberTag(entries, TIFF_TAG_FREE_OFFSETS);
// dumpOptionalNumberTag(entries, TIFF_TAG_ORIENTATION);
// dumpOptionalNumberTag(entries, TIFF_TAG_PLANAR_CONFIGURATION);
final TiffField predictorField = directory.findField(
TiffTagConstants.TIFF_TAG_PREDICTOR);
if (null != predictorField) {
predictor = predictorField.getIntValueOrArraySum();
}
}
if (predictor == TiffTagConstants.PREDICTOR_VALUE_HORIZONTAL_DIFFERENCING) {
throw new ImageReadException(
"TIFF floating-point data uses unsupported horizontal-differencing predictor");
}
// The photometric interpreter is not used, but the image-based
// data reader classes require one. So we create a dummy interpreter.
PhotometricInterpreter photometricInterpreter
= new PhotometricInterpreterBiLevel(samplesPerPixel,
bitsPerSample, predictor, width, height, false);
final TiffImageData imageData = directory.getTiffImageData();
final ImageDataReader dataReader = imageData.getDataReader(directory,
photometricInterpreter, bitsPerPixel, bitsPerSample, predictor,
samplesPerPixel, width, height, compression, byteOrder);
return dataReader.readRasterData(subImage);
}
}