diff options
Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/codec/TIFFDirectory.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/codec/TIFFDirectory.java | 656 |
1 files changed, 0 insertions, 656 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/codec/TIFFDirectory.java b/src/main/java/com/lowagie/text/pdf/codec/TIFFDirectory.java deleted file mode 100644 index abcc0dd..0000000 --- a/src/main/java/com/lowagie/text/pdf/codec/TIFFDirectory.java +++ /dev/null @@ -1,656 +0,0 @@ -/*
- * Copyright (c) 2001 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * -Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * -Redistribution in binary form must reproduct the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
- * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
- * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
- * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
- * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
- * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
- * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
- * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
- * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that Software is not designed,licensed or intended for use in
- * the design, construction, operation or maintenance of any nuclear facility.
- */
-package com.lowagie.text.pdf.codec;
-import java.io.IOException;
-import java.io.EOFException;
-import java.io.Serializable;
-import java.util.Enumeration;
-import java.util.Hashtable;
-import java.util.ArrayList;
-import com.lowagie.text.pdf.RandomAccessFileOrArray;
-
-/**
- * A class representing an Image File Directory (IFD) from a TIFF 6.0
- * stream. The TIFF file format is described in more detail in the
- * comments for the TIFFDescriptor class.
- *
- * <p> A TIFF IFD consists of a set of TIFFField tags. Methods are
- * provided to query the set of tags and to obtain the raw field
- * array. In addition, convenience methods are provided for acquiring
- * the values of tags that contain a single value that fits into a
- * byte, int, long, float, or double.
- *
- * <p> Every TIFF file is made up of one or more public IFDs that are
- * joined in a linked list, rooted in the file header. A file may
- * also contain so-called private IFDs that are referenced from
- * tag data and do not appear in the main list.
- *
- * <p><b> This class is not a committed part of the JAI API. It may
- * be removed or changed in future releases of JAI.</b>
- *
- * @see TIFFField
- */
-public class TIFFDirectory extends Object implements Serializable {
-
- /** A boolean storing the endianness of the stream. */
- boolean isBigEndian;
-
- /** The number of entries in the IFD. */
- int numEntries;
-
- /** An array of TIFFFields. */
- TIFFField[] fields;
-
- /** A Hashtable indexing the fields by tag number. */
- Hashtable fieldIndex = new Hashtable();
-
- /** The offset of this IFD. */
- long IFDOffset = 8;
-
- /** The offset of the next IFD. */
- long nextIFDOffset = 0;
-
- /** The default constructor. */
- TIFFDirectory() {}
-
- private static boolean isValidEndianTag(int endian) {
- return ((endian == 0x4949) || (endian == 0x4d4d));
- }
-
- /**
- * Constructs a TIFFDirectory from a SeekableStream.
- * The directory parameter specifies which directory to read from
- * the linked list present in the stream; directory 0 is normally
- * read but it is possible to store multiple images in a single
- * TIFF file by maintaing multiple directories.
- *
- * @param stream a SeekableStream to read from.
- * @param directory the index of the directory to read.
- */
- public TIFFDirectory(RandomAccessFileOrArray stream, int directory)
- throws IOException {
-
- long global_save_offset = stream.getFilePointer();
- long ifd_offset;
-
- // Read the TIFF header
- stream.seek(0L);
- int endian = stream.readUnsignedShort();
- if (!isValidEndianTag(endian)) {
- throw new
- IllegalArgumentException("Bad endianness tag (not 0x4949 or 0x4d4d).");
- }
- isBigEndian = (endian == 0x4d4d);
-
- int magic = readUnsignedShort(stream);
- if (magic != 42) {
- throw new
- IllegalArgumentException("Bad magic number, should be 42.");
- }
-
- // Get the initial ifd offset as an unsigned int (using a long)
- ifd_offset = readUnsignedInt(stream);
-
- for (int i = 0; i < directory; i++) {
- if (ifd_offset == 0L) {
- throw new
- IllegalArgumentException("Directory number too large.");
- }
-
- stream.seek(ifd_offset);
- int entries = readUnsignedShort(stream);
- stream.skip(12*entries);
-
- ifd_offset = readUnsignedInt(stream);
- }
-
- stream.seek(ifd_offset);
- initialize(stream);
- stream.seek(global_save_offset);
- }
-
- /**
- * Constructs a TIFFDirectory by reading a SeekableStream.
- * The ifd_offset parameter specifies the stream offset from which
- * to begin reading; this mechanism is sometimes used to store
- * private IFDs within a TIFF file that are not part of the normal
- * sequence of IFDs.
- *
- * @param stream a SeekableStream to read from.
- * @param ifd_offset the long byte offset of the directory.
- * @param directory the index of the directory to read beyond the
- * one at the current stream offset; zero indicates the IFD
- * at the current offset.
- */
- public TIFFDirectory(RandomAccessFileOrArray stream, long ifd_offset, int directory)
- throws IOException {
-
- long global_save_offset = stream.getFilePointer();
- stream.seek(0L);
- int endian = stream.readUnsignedShort();
- if (!isValidEndianTag(endian)) {
- throw new
- IllegalArgumentException("Bad endianness tag (not 0x4949 or 0x4d4d).");
- }
- isBigEndian = (endian == 0x4d4d);
-
- // Seek to the first IFD.
- stream.seek(ifd_offset);
-
- // Seek to desired IFD if necessary.
- int dirNum = 0;
- while(dirNum < directory) {
- // Get the number of fields in the current IFD.
- int numEntries = readUnsignedShort(stream);
-
- // Skip to the next IFD offset value field.
- stream.seek(ifd_offset + 12*numEntries);
-
- // Read the offset to the next IFD beyond this one.
- ifd_offset = readUnsignedInt(stream);
-
- // Seek to the next IFD.
- stream.seek(ifd_offset);
-
- // Increment the directory.
- dirNum++;
- }
-
- initialize(stream);
- stream.seek(global_save_offset);
- }
-
- private static final int[] sizeOfType = {
- 0, // 0 = n/a
- 1, // 1 = byte
- 1, // 2 = ascii
- 2, // 3 = short
- 4, // 4 = long
- 8, // 5 = rational
- 1, // 6 = sbyte
- 1, // 7 = undefined
- 2, // 8 = sshort
- 4, // 9 = slong
- 8, // 10 = srational
- 4, // 11 = float
- 8 // 12 = double
- };
-
- private void initialize(RandomAccessFileOrArray stream) throws IOException {
- long nextTagOffset = 0L;
- long maxOffset = stream.length();
- int i, j;
-
- IFDOffset = stream.getFilePointer();
-
- numEntries = readUnsignedShort(stream);
- fields = new TIFFField[numEntries];
-
- for (i = 0; (i < numEntries) && (nextTagOffset < maxOffset); i++) {
- int tag = readUnsignedShort(stream);
- int type = readUnsignedShort(stream);
- int count = (int)(readUnsignedInt(stream));
- boolean processTag = true;
-
- // The place to return to to read the next tag
- nextTagOffset = stream.getFilePointer() + 4;
-
- try {
- // If the tag data can't fit in 4 bytes, the next 4 bytes
- // contain the starting offset of the data
- if (count*sizeOfType[type] > 4) {
- long valueOffset = readUnsignedInt(stream);
-
- // bounds check offset for EOF
- if (valueOffset < maxOffset) {
- stream.seek(valueOffset);
- }
- else {
- // bad offset pointer .. skip tag
- processTag = false;
- }
- }
- } catch (ArrayIndexOutOfBoundsException ae) {
- // if the data type is unknown we should skip this TIFF Field
- processTag = false;
- }
-
- if (processTag) {
- fieldIndex.put(new Integer(tag), new Integer(i));
- Object obj = null;
-
- switch (type) {
- case TIFFField.TIFF_BYTE:
- case TIFFField.TIFF_SBYTE:
- case TIFFField.TIFF_UNDEFINED:
- case TIFFField.TIFF_ASCII:
- byte[] bvalues = new byte[count];
- stream.readFully(bvalues, 0, count);
-
- if (type == TIFFField.TIFF_ASCII) {
-
- // Can be multiple strings
- int index = 0, prevIndex = 0;
- ArrayList v = new ArrayList();
-
- while (index < count) {
-
- while ((index < count) && (bvalues[index++] != 0));
-
- // When we encountered zero, means one string has ended
- v.add(new String(bvalues, prevIndex,
- (index - prevIndex)) );
- prevIndex = index;
- }
-
- count = v.size();
- String strings[] = new String[count];
- for (int c = 0 ; c < count; c++) {
- strings[c] = (String)v.get(c);
- }
-
- obj = strings;
- } else {
- obj = bvalues;
- }
-
- break;
-
- case TIFFField.TIFF_SHORT:
- char[] cvalues = new char[count];
- for (j = 0; j < count; j++) {
- cvalues[j] = (char)(readUnsignedShort(stream));
- }
- obj = cvalues;
- break;
-
- case TIFFField.TIFF_LONG:
- long[] lvalues = new long[count];
- for (j = 0; j < count; j++) {
- lvalues[j] = readUnsignedInt(stream);
- }
- obj = lvalues;
- break;
-
- case TIFFField.TIFF_RATIONAL:
- long[][] llvalues = new long[count][2];
- for (j = 0; j < count; j++) {
- llvalues[j][0] = readUnsignedInt(stream);
- llvalues[j][1] = readUnsignedInt(stream);
- }
- obj = llvalues;
- break;
-
- case TIFFField.TIFF_SSHORT:
- short[] svalues = new short[count];
- for (j = 0; j < count; j++) {
- svalues[j] = readShort(stream);
- }
- obj = svalues;
- break;
-
- case TIFFField.TIFF_SLONG:
- int[] ivalues = new int[count];
- for (j = 0; j < count; j++) {
- ivalues[j] = readInt(stream);
- }
- obj = ivalues;
- break;
-
- case TIFFField.TIFF_SRATIONAL:
- int[][] iivalues = new int[count][2];
- for (j = 0; j < count; j++) {
- iivalues[j][0] = readInt(stream);
- iivalues[j][1] = readInt(stream);
- }
- obj = iivalues;
- break;
-
- case TIFFField.TIFF_FLOAT:
- float[] fvalues = new float[count];
- for (j = 0; j < count; j++) {
- fvalues[j] = readFloat(stream);
- }
- obj = fvalues;
- break;
-
- case TIFFField.TIFF_DOUBLE:
- double[] dvalues = new double[count];
- for (j = 0; j < count; j++) {
- dvalues[j] = readDouble(stream);
- }
- obj = dvalues;
- break;
-
- default:
- break;
- }
-
- fields[i] = new TIFFField(tag, type, count, obj);
- }
-
- stream.seek(nextTagOffset);
- }
-
- // Read the offset of the next IFD.
- nextIFDOffset = readUnsignedInt(stream);
- }
-
- /** Returns the number of directory entries. */
- public int getNumEntries() {
- return numEntries;
- }
-
- /**
- * Returns the value of a given tag as a TIFFField,
- * or null if the tag is not present.
- */
- public TIFFField getField(int tag) {
- Integer i = (Integer)fieldIndex.get(new Integer(tag));
- if (i == null) {
- return null;
- } else {
- return fields[i.intValue()];
- }
- }
-
- /**
- * Returns true if a tag appears in the directory.
- */
- public boolean isTagPresent(int tag) {
- return fieldIndex.containsKey(new Integer(tag));
- }
-
- /**
- * Returns an ordered array of ints indicating the tag
- * values.
- */
- public int[] getTags() {
- int[] tags = new int[fieldIndex.size()];
- Enumeration e = fieldIndex.keys();
- int i = 0;
-
- while (e.hasMoreElements()) {
- tags[i++] = ((Integer)e.nextElement()).intValue();
- }
-
- return tags;
- }
-
- /**
- * Returns an array of TIFFFields containing all the fields
- * in this directory.
- */
- public TIFFField[] getFields() {
- return fields;
- }
-
- /**
- * Returns the value of a particular index of a given tag as a
- * byte. The caller is responsible for ensuring that the tag is
- * present and has type TIFFField.TIFF_SBYTE, TIFF_BYTE, or
- * TIFF_UNDEFINED.
- */
- public byte getFieldAsByte(int tag, int index) {
- Integer i = (Integer)fieldIndex.get(new Integer(tag));
- byte [] b = (fields[i.intValue()]).getAsBytes();
- return b[index];
- }
-
- /**
- * Returns the value of index 0 of a given tag as a
- * byte. The caller is responsible for ensuring that the tag is
- * present and has type TIFFField.TIFF_SBYTE, TIFF_BYTE, or
- * TIFF_UNDEFINED.
- */
- public byte getFieldAsByte(int tag) {
- return getFieldAsByte(tag, 0);
- }
-
- /**
- * Returns the value of a particular index of a given tag as a
- * long. The caller is responsible for ensuring that the tag is
- * present and has type TIFF_BYTE, TIFF_SBYTE, TIFF_UNDEFINED,
- * TIFF_SHORT, TIFF_SSHORT, TIFF_SLONG or TIFF_LONG.
- */
- public long getFieldAsLong(int tag, int index) {
- Integer i = (Integer)fieldIndex.get(new Integer(tag));
- return (fields[i.intValue()]).getAsLong(index);
- }
-
- /**
- * Returns the value of index 0 of a given tag as a
- * long. The caller is responsible for ensuring that the tag is
- * present and has type TIFF_BYTE, TIFF_SBYTE, TIFF_UNDEFINED,
- * TIFF_SHORT, TIFF_SSHORT, TIFF_SLONG or TIFF_LONG.
- */
- public long getFieldAsLong(int tag) {
- return getFieldAsLong(tag, 0);
- }
-
- /**
- * Returns the value of a particular index of a given tag as a
- * float. The caller is responsible for ensuring that the tag is
- * present and has numeric type (all but TIFF_UNDEFINED and
- * TIFF_ASCII).
- */
- public float getFieldAsFloat(int tag, int index) {
- Integer i = (Integer)fieldIndex.get(new Integer(tag));
- return fields[i.intValue()].getAsFloat(index);
- }
-
- /**
- * Returns the value of index 0 of a given tag as a float. The
- * caller is responsible for ensuring that the tag is present and
- * has numeric type (all but TIFF_UNDEFINED and TIFF_ASCII).
- */
- public float getFieldAsFloat(int tag) {
- return getFieldAsFloat(tag, 0);
- }
-
- /**
- * Returns the value of a particular index of a given tag as a
- * double. The caller is responsible for ensuring that the tag is
- * present and has numeric type (all but TIFF_UNDEFINED and
- * TIFF_ASCII).
- */
- public double getFieldAsDouble(int tag, int index) {
- Integer i = (Integer)fieldIndex.get(new Integer(tag));
- return fields[i.intValue()].getAsDouble(index);
- }
-
- /**
- * Returns the value of index 0 of a given tag as a double. The
- * caller is responsible for ensuring that the tag is present and
- * has numeric type (all but TIFF_UNDEFINED and TIFF_ASCII).
- */
- public double getFieldAsDouble(int tag) {
- return getFieldAsDouble(tag, 0);
- }
-
- // Methods to read primitive data types from the stream
-
- private short readShort(RandomAccessFileOrArray stream)
- throws IOException {
- if (isBigEndian) {
- return stream.readShort();
- } else {
- return stream.readShortLE();
- }
- }
-
- private int readUnsignedShort(RandomAccessFileOrArray stream)
- throws IOException {
- if (isBigEndian) {
- return stream.readUnsignedShort();
- } else {
- return stream.readUnsignedShortLE();
- }
- }
-
- private int readInt(RandomAccessFileOrArray stream)
- throws IOException {
- if (isBigEndian) {
- return stream.readInt();
- } else {
- return stream.readIntLE();
- }
- }
-
- private long readUnsignedInt(RandomAccessFileOrArray stream)
- throws IOException {
- if (isBigEndian) {
- return stream.readUnsignedInt();
- } else {
- return stream.readUnsignedIntLE();
- }
- }
-
- private long readLong(RandomAccessFileOrArray stream)
- throws IOException {
- if (isBigEndian) {
- return stream.readLong();
- } else {
- return stream.readLongLE();
- }
- }
-
- private float readFloat(RandomAccessFileOrArray stream)
- throws IOException {
- if (isBigEndian) {
- return stream.readFloat();
- } else {
- return stream.readFloatLE();
- }
- }
-
- private double readDouble(RandomAccessFileOrArray stream)
- throws IOException {
- if (isBigEndian) {
- return stream.readDouble();
- } else {
- return stream.readDoubleLE();
- }
- }
-
- private static int readUnsignedShort(RandomAccessFileOrArray stream,
- boolean isBigEndian)
- throws IOException {
- if (isBigEndian) {
- return stream.readUnsignedShort();
- } else {
- return stream.readUnsignedShortLE();
- }
- }
-
- private static long readUnsignedInt(RandomAccessFileOrArray stream,
- boolean isBigEndian)
- throws IOException {
- if (isBigEndian) {
- return stream.readUnsignedInt();
- } else {
- return stream.readUnsignedIntLE();
- }
- }
-
- // Utilities
-
- /**
- * Returns the number of image directories (subimages) stored in a
- * given TIFF file, represented by a <code>SeekableStream</code>.
- */
- public static int getNumDirectories(RandomAccessFileOrArray stream)
- throws IOException{
- long pointer = stream.getFilePointer(); // Save stream pointer
-
- stream.seek(0L);
- int endian = stream.readUnsignedShort();
- if (!isValidEndianTag(endian)) {
- throw new
- IllegalArgumentException("Bad endianness tag (not 0x4949 or 0x4d4d).");
- }
- boolean isBigEndian = (endian == 0x4d4d);
- int magic = readUnsignedShort(stream, isBigEndian);
- if (magic != 42) {
- throw new
- IllegalArgumentException("Bad magic number, should be 42.");
- }
-
- stream.seek(4L);
- long offset = readUnsignedInt(stream, isBigEndian);
-
- int numDirectories = 0;
- while (offset != 0L) {
- ++numDirectories;
-
- // EOFException means IFD was probably not properly terminated.
- try {
- stream.seek(offset);
- int entries = readUnsignedShort(stream, isBigEndian);
- stream.skip(12*entries);
- offset = readUnsignedInt(stream, isBigEndian);
- } catch(EOFException eof) {
- numDirectories--;
- break;
- }
- }
-
- stream.seek(pointer); // Reset stream pointer
- return numDirectories;
- }
-
- /**
- * Returns a boolean indicating whether the byte order used in the
- * the TIFF file is big-endian (i.e. whether the byte order is from
- * the most significant to the least significant)
- */
- public boolean isBigEndian() {
- return isBigEndian;
- }
-
- /**
- * Returns the offset of the IFD corresponding to this
- * <code>TIFFDirectory</code>.
- */
- public long getIFDOffset() {
- return IFDOffset;
- }
-
- /**
- * Returns the offset of the next IFD after the IFD corresponding to this
- * <code>TIFFDirectory</code>.
- */
- public long getNextIFDOffset() {
- return nextIFDOffset;
- }
-}
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