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Apache Commons Imaging (previously Sanselan) is a pure-Java image library.
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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.
*/
package org.apache.commons.imaging.formats.tiff;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.nio.ByteOrder;
import java.nio.charset.Charset;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import org.apache.commons.imaging.ImageReadException;
import org.apache.commons.imaging.common.BinaryFunctions;
import org.apache.commons.imaging.formats.tiff.constants.TiffConstants;
import org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants;
import org.apache.commons.imaging.formats.tiff.fieldtypes.FieldType;
import org.apache.commons.imaging.formats.tiff.taginfos.TagInfo;
/**
* A TIFF field in a TIFF directory. Immutable.
*/
public class TiffField {
private final TagInfo tagInfo;
private final int tag;
private final int directoryType;
private final FieldType fieldType;
private final long count;
private final long offset;
private final byte[] value;
private final ByteOrder byteOrder;
private final int sortHint;
public TiffField(final int tag, final int directoryType, final FieldType fieldType,
final long count, final long offset, final byte[] value,
final ByteOrder byteOrder, final int sortHint) {
this.tag = tag;
this.directoryType = directoryType;
this.fieldType = fieldType;
this.count = count;
this.offset = offset;
this.value = value;
this.byteOrder = byteOrder;
this.sortHint = sortHint;
tagInfo = TiffTags.getTag(directoryType, tag);
}
public int getDirectoryType() {
return directoryType;
}
public TagInfo getTagInfo() {
return tagInfo;
}
/**
* Returns the field's tag, derived from bytes 0-1.
* @return the tag, as an int in which only the lowest 2 bytes are set
*/
public int getTag() {
return tag;
}
/**
* Returns the field's type, derived from bytes 2-3.
* @return the field's type, as a {@code FieldType} object.
*/
public FieldType getFieldType() {
return fieldType;
}
/**
* Returns the field's count, derived from bytes 4-7.
* @return the count
*/
public long getCount() {
return count;
}
/**
* Returns the TIFF field's offset/value field, derived from bytes 8-11.
* @return the field's offset in a long of 4 packed bytes,
* or its inlined value <= 4 bytes long encoded in the field's byte order.
*/
public int getOffset() {
return (int) offset;
}
/**
* Returns the field's byte order.
* @return the byte order
*/
public ByteOrder getByteOrder() {
return byteOrder;
}
public int getSortHint() {
return sortHint;
}
/**
* Indicates whether the field's value is inlined into the offset field.
* @return true if the value is inlined
*/
public boolean isLocalValue() {
return (count * fieldType.getSize()) <= TiffConstants.TIFF_ENTRY_MAX_VALUE_LENGTH;
}
/**
* The length of the field's value.
* @return the length, in bytes.
*/
public int getBytesLength() {
return (int) count * fieldType.getSize();
}
/**
* Returns a copy of the raw value of the field.
* @return the value of the field, in the byte order of the field.
*/
public byte[] getByteArrayValue() {
return BinaryFunctions.head(value, getBytesLength());
}
public final class OversizeValueElement extends TiffElement {
public OversizeValueElement(final int offset, final int length) {
super(offset, length);
}
@Override
public String getElementDescription(final boolean verbose) {
if (verbose) {
return null;
}
return "OversizeValueElement, tag: " + getTagInfo().name
+ ", fieldType: " + getFieldType().getName();
}
}
public TiffElement getOversizeValueElement() {
if (isLocalValue()) {
return null;
}
return new OversizeValueElement(getOffset(), value.length);
}
public String getValueDescription() {
try {
return getValueDescription(getValue());
} catch (final ImageReadException e) {
return "Invalid value: " + e.getMessage();
}
}
private String getValueDescription(final Object o) {
if (o == null) {
return null;
}
if (o instanceof Number) {
return o.toString();
} else if (o instanceof String) {
return "'" + o.toString().trim() + "'";
} else if (o instanceof Date) {
final DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ", Locale.ENGLISH);
return df.format((Date) o);
} else if (o instanceof Object[]) {
final Object[] objects = (Object[]) o;
final StringBuilder result = new StringBuilder();
for (int i = 0; i < objects.length; i++) {
final Object object = objects[i];
if (i > 50) {
result.append("... (" + objects.length + ")");
break;
}
if (i > 0) {
result.append(", ");
}
result.append(object.toString());
}
return result.toString();
// } else if (o instanceof Number[])
// {
// Number numbers[] = (Number[]) o;
// StringBuilder result = new StringBuilder();
//
// for (int i = 0; i < numbers.length; i++)
// {
// Number number = numbers[i];
//
// if (i > 0)
// result.append(", ");
// result.append("" + number);
// }
// return result.toString();
// }
} else if (o instanceof short[]) {
final short[] values = (short[]) o;
final StringBuilder result = new StringBuilder();
for (int i = 0; i < values.length; i++) {
final short sval = values[i];
if (i > 50) {
result.append("... (" + values.length + ")");
break;
}
if (i > 0) {
result.append(", ");
}
result.append(Short.toString(sval));
}
return result.toString();
} else if (o instanceof int[]) {
final int[] values = (int[]) o;
final StringBuilder result = new StringBuilder();
for (int i = 0; i < values.length; i++) {
final int iVal = values[i];
if (i > 50) {
result.append("... (" + values.length + ")");
break;
}
if (i > 0) {
result.append(", ");
}
result.append(Integer.toString(iVal));
}
return result.toString();
} else if (o instanceof long[]) {
final long[] values = (long[]) o;
final StringBuilder result = new StringBuilder();
for (int i = 0; i < values.length; i++) {
final long lVal = values[i];
if (i > 50) {
result.append("... (" + values.length + ")");
break;
}
if (i > 0) {
result.append(", ");
}
result.append(Long.toString(lVal));
}
return result.toString();
} else if (o instanceof double[]) {
final double[] values = (double[]) o;
final StringBuilder result = new StringBuilder();
for (int i = 0; i < values.length; i++) {
final double dVal = values[i];
if (i > 50) {
result.append("... (" + values.length + ")");
break;
}
if (i > 0) {
result.append(", ");
}
result.append(Double.toString(dVal));
}
return result.toString();
} else if (o instanceof byte[]) {
final byte[] values = (byte[]) o;
final StringBuilder result = new StringBuilder();
for (int i = 0; i < values.length; i++) {
final byte bVal = values[i];
if (i > 50) {
result.append("... (" + values.length + ")");
break;
}
if (i > 0) {
result.append(", ");
}
result.append(Byte.toString(bVal));
}
return result.toString();
} else if (o instanceof char[]) {
final char[] values = (char[]) o;
final StringBuilder result = new StringBuilder();
for (int i = 0; i < values.length; i++) {
final char cVal = values[i];
if (i > 50) {
result.append("... (" + values.length + ")");
break;
}
if (i > 0) {
result.append(", ");
}
result.append(Character.toString(cVal));
}
return result.toString();
} else if (o instanceof float[]) {
final float[] values = (float[]) o;
final StringBuilder result = new StringBuilder();
for (int i = 0; i < values.length; i++) {
final float fVal = values[i];
if (i > 50) {
result.append("... (" + values.length + ")");
break;
}
if (i > 0) {
result.append(", ");
}
result.append(Float.toString(fVal));
}
return result.toString();
}
// else if (o instanceof short[])
// {
// short numbers[] = (short[]) o;
// StringBuilder result = new StringBuilder();
//
// for (int i = 0; i < numbers.length; i++)
// {
// short number = numbers[i];
//
// if (i > 0)
// result.append(", ");
// result.append("" + number);
// }
// return result.toString();
// }
return "Unknown: " + o.getClass().getName();
}
public void dump() {
final PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out, Charset.defaultCharset()));
dump(pw);
pw.flush();
}
public void dump(final PrintWriter pw) {
dump(pw, null);
}
public void dump(final PrintWriter pw, final String prefix) {
if (prefix != null) {
pw.print(prefix + ": ");
}
pw.println(toString());
pw.flush();
}
public String getDescriptionWithoutValue() {
return getTag() + " (0x" + Integer.toHexString(getTag()) + ": " + getTagInfo().name
+ "): ";
}
@Override
public String toString() {
final StringBuilder result = new StringBuilder();
result.append(getTag() + " (0x" + Integer.toHexString(getTag()) + ": "
+ getTagInfo().name + "): ");
result.append(getValueDescription() + " (" + getCount() + " "
+ getFieldType().getName() + ")");
return result.toString();
}
public String getTagName() {
if (getTagInfo() == TiffTagConstants.TIFF_TAG_UNKNOWN) {
return getTagInfo().name + " (0x" + Integer.toHexString(getTag()) + ")";
}
return getTagInfo().name;
}
public String getFieldTypeName() {
return getFieldType().getName();
}
public Object getValue() throws ImageReadException {
// System.out.print("getValue");
return getTagInfo().getValue(this);
}
public String getStringValue() throws ImageReadException {
final Object o = getValue();
if (o == null) {
return null;
}
if (!(o instanceof String)) {
throw new ImageReadException("Expected String value("
+ getTagInfo().getDescription() + "): " + o);
}
return (String) o;
}
public int[] getIntArrayValue() throws ImageReadException {
final Object o = getValue();
// if (o == null)
// return null;
if (o instanceof Number) {
return new int[] { ((Number) o).intValue() };
} else if (o instanceof Number[]) {
final Number[] numbers = (Number[]) o;
final int[] result = new int[numbers.length];
for (int i = 0; i < numbers.length; i++) {
result[i] = numbers[i].intValue();
}
return result;
} else if (o instanceof short[]) {
final short[] numbers = (short[]) o;
final int[] result = new int[numbers.length];
for (int i = 0; i < numbers.length; i++) {
result[i] = 0xffff & numbers[i];
}
return result;
} else if (o instanceof int[]) {
final int[] numbers = (int[]) o;
final int[] result = new int[numbers.length];
System.arraycopy(numbers, 0, result, 0, numbers.length);
return result;
}
throw new ImageReadException("Unknown value: " + o + " for: "
+ getTagInfo().getDescription());
// return null;
}
public double[] getDoubleArrayValue() throws ImageReadException {
final Object o = getValue();
// if (o == null)
// return null;
if (o instanceof Number) {
return new double[] { ((Number) o).doubleValue() };
} else if (o instanceof Number[]) {
final Number[] numbers = (Number[]) o;
final double[] result = new double[numbers.length];
for (int i = 0; i < numbers.length; i++) {
result[i] = numbers[i].doubleValue();
}
return result;
} else if (o instanceof short[]) {
final short[] numbers = (short[]) o;
final double[] result = new double[numbers.length];
for (int i = 0; i < numbers.length; i++) {
result[i] = numbers[i];
}
return result;
} else if (o instanceof int[]) {
final int[] numbers = (int[]) o;
final double[] result = new double[numbers.length];
for (int i = 0; i < numbers.length; i++) {
result[i] = numbers[i];
}
return result;
} else if (o instanceof float[]) {
final float[] numbers = (float[]) o;
final double[] result = new double[numbers.length];
for (int i = 0; i < numbers.length; i++) {
result[i] = numbers[i];
}
return result;
} else if (o instanceof double[]) {
final double[] numbers = (double[]) o;
final double[] result = new double[numbers.length];
System.arraycopy(numbers, 0, result, 0, numbers.length);
return result;
}
throw new ImageReadException("Unknown value: " + o + " for: "
+ getTagInfo().getDescription());
// return null;
}
public int getIntValueOrArraySum() throws ImageReadException {
final Object o = getValue();
// if (o == null)
// return -1;
if (o instanceof Number) {
return ((Number) o).intValue();
} else if (o instanceof Number[]) {
final Number[] numbers = (Number[]) o;
int sum = 0;
for (final Number number : numbers) {
sum += number.intValue();
}
return sum;
} else if (o instanceof short[]) {
final short[] numbers = (short[]) o;
int sum = 0;
for (final short number : numbers) {
sum += number;
}
return sum;
} else if (o instanceof int[]) {
final int[] numbers = (int[]) o;
int sum = 0;
for (final int number : numbers) {
sum += number;
}
return sum;
}
throw new ImageReadException("Unknown value: " + o + " for: "
+ getTagInfo().getDescription());
// return -1;
}
public int getIntValue() throws ImageReadException {
final Object o = getValue();
if (o == null) {
throw new ImageReadException("Missing value: "
+ getTagInfo().getDescription());
}
return ((Number) o).intValue();
}
public double getDoubleValue() throws ImageReadException {
final Object o = getValue();
if (o == null) {
throw new ImageReadException("Missing value: "
+ getTagInfo().getDescription());
}
return ((Number) o).doubleValue();
}
}
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