diff options
Diffstat (limited to 'src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDCcitt.java')
| -rw-r--r-- | src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDCcitt.java | 598 |
1 files changed, 0 insertions, 598 deletions
diff --git a/src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDCcitt.java b/src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDCcitt.java deleted file mode 100644 index 59387a0..0000000 --- a/src/main/java/org/pdfbox/pdmodel/graphics/xobject/PDCcitt.java +++ /dev/null @@ -1,598 +0,0 @@ -/**
- * Copyright (c) 2005, www.pdfbox.org
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. Neither the name of pdfbox; nor the names of its
- * contributors may be used to endorse or promote products derived from this
- * software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * http://www.pdfbox.org
- *
- */
-package org.pdfbox.pdmodel.graphics.xobject;
-
-import java.awt.image.BufferedImage;
-import java.io.InputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.RandomAccessFile;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import javax.imageio.ImageIO;
-
-import org.pdfbox.cos.COSDictionary;
-import org.pdfbox.cos.COSName;
-
-import org.pdfbox.pdmodel.PDDocument;
-import org.pdfbox.pdmodel.common.PDStream;
-import org.pdfbox.pdmodel.graphics.color.PDDeviceGray;
-
-/**
- * An image class for CCITT Fax.
- *
- * @author paul king
- * @version $Revision: 1.2 $
- */
-public class PDCcitt extends PDXObjectImage
-{
- private static final List FAX_FILTERS = new ArrayList();
-
- static
- {
- FAX_FILTERS.add( COSName.CCITTFAX_DECODE.getName() );
- FAX_FILTERS.add( COSName.CCITTFAX_DECODE_ABBREVIATION.getName() );
- }
-
- /**
- * Standard constructor.
- *
- * @param ccitt The PDStream that already contains all ccitt information.
- */
- public PDCcitt(PDStream ccitt)
- {
- super(ccitt, "tiff");
-
- }
-
- /**
- * Construct from a tiff file.
- *
- * @param doc The document to create the image as part of.
- * @param raf The random access TIFF file which contains a suitable CCITT compressed image
- * @throws IOException If there is an error reading the tiff data.
- */
-
- public PDCcitt( PDDocument doc, java.io.RandomAccessFile raf ) throws IOException
- {
- super( new PDStream(doc),"tiff");
- // super( new PDStream( doc, null, true ), "tiff" );
-
- COSDictionary decodeParms = new COSDictionary();
-
- COSDictionary dic = getCOSStream();
-
- extractFromTiff(raf, getCOSStream().createFilteredStream(),decodeParms);
-
- dic.setItem( COSName.FILTER, COSName.CCITTFAX_DECODE);
- dic.setItem( COSName.SUBTYPE, COSName.IMAGE);
- dic.setItem( COSName.TYPE, COSName.getPDFName( "XObject" ) );
- dic.setItem( "DecodeParms", decodeParms);
-
- setBitsPerComponent( 1 );
- setColorSpace( new PDDeviceGray() );
- setWidth( decodeParms.getInt("Columns") );
- setHeight( decodeParms.getInt("Rows") );
-
- }
-
- /**
- * Returns an image of the CCITT Fax, or null if TIFFs are not supported. (Requires additional JAI Image filters )
- * @see org.pdfbox.pdmodel.graphics.xobject.PDXObjectImage#getRGBImage()
- */
- public BufferedImage getRGBImage() throws IOException
- {
- // ImageIO.scanForPlugins();
- return ImageIO.read(new TiffWrapper(getPDStream().getPartiallyFilteredStream( FAX_FILTERS ),getCOSStream()));
- }
-
- /**
- * This writes a tiff to out.
- * @see org.pdfbox.pdmodel.graphics.xobject.PDXObjectImage#write2OutputStream(java.io.OutputStream)
- */
- public void write2OutputStream(OutputStream out) throws IOException
- {
- InputStream data = new TiffWrapper(getPDStream().getPartiallyFilteredStream( FAX_FILTERS ),getCOSStream());
- byte[] buf = new byte[1024];
- int amountRead = -1;
- while( (amountRead = data.read( buf )) != -1 )
- {
- out.write( buf, 0, amountRead );
- }
- }
-
- /**
- * Extract the ccitt stream from the tiff file.
- *
- * @param raf - TIFF File
- * @param os - Stream to write raw ccitt data two
- * @param parms - COSDictionary which the encoding parameters are added to
- * @throws IOException If there is an error reading/writing to/from the stream
- */
- private void extractFromTiff(RandomAccessFile raf, OutputStream os, COSDictionary parms) throws IOException
- {
- try
- {
-
- // First check the basic tiff header
- raf.seek(0);
- char endianess = (char) raf.read();
- if ((char) raf.read() != endianess)
- {
- throw new IOException("Not a valid tiff file");
- }
- //ensure that endianess is either M or I
- if (endianess != 'M' && endianess != 'I')
- {
- throw new IOException("Not a valid tiff file");
- }
- int magicNumber = readshort(endianess, raf);
- if( magicNumber != 42)
- {
- throw new IOException("Not a valid tiff file");
- }
-
- // Relocate to the first set of tags
- raf.seek(readlong(endianess, raf));
-
- int numtags = readshort(endianess, raf);
-
- // The number 50 is somewhat arbitary, it just stops us load up junk from somewhere and tramping on
- if (numtags > 50)
- {
- throw new IOException("Not a valid tiff file");
- }
-
- // Loop through the tags, some will convert to items in the parms dictionary
- // Other point us to where to find the data stream
- // The only parm which might change as a result of other options is K, so
- // We'll deal with that as a special;
-
- int k=-1000; // Default Non CCITT compression
- int dataoffset=0;
- int datalength=0;
-
- for (int i=0; i < numtags; i++)
- {
- int tag = readshort(endianess, raf);
- int type = readshort(endianess, raf);
- int count = readlong(endianess, raf);
- int val = readlong(endianess, raf); // See note
-
- // Note, we treated that value as a long. The value always occupies 4 bytes
- // But it might only use the first byte or two. Depending on endianess we might need to correct
- // Note we ignore all other types, they are of little interest for PDFs/CCITT Fax
- if (endianess == 'M')
- {
- switch (type)
- {
- case 1:
- {
- val = val >> 24;
- break; // byte value
- }
- case 3:
- {
- val = val >> 16;
- break; // short value
- }
- case 4:
- {
- break; // long value
- }
- default:
- {
- //do nothing
- }
- }
- }
- switch (tag)
- {
- case 256:
- {
- parms.setInt("Columns",val);
- break;
- }
- case 257:
- {
- parms.setInt("Rows",val);
- break;
- }
- case 259:
- {
- if (val == 4)
- {
- k=-1;
- }
- if (val == 3)
- {
- k=0;
- }
- break; // T6/T4 Compression
- }
- case 262:
- {
- if (val == 1)
- {
- parms.setBoolean("BlackIs1", true);
- }
- break;
- }
- case 273:
- {
- if (count == 1)
- {
- dataoffset=val;
- }
- break;
- }
- case 279:
- {
- if (count == 1)
- {
- datalength=val;
- }
- break;
- }
- case 292:
- {
- if (val == 1)
- {
- k=50; // T4 2D - arbitary K value
- }
- break;
- }
- case 324:
- {
- if (count == 1)
- {
- dataoffset=val;
- }
- break;
- }
- case 325:
- {
- if (count == 1)
- {
- datalength=val;
- }
- break;
- }
- default:
- {
- //do nothing
- }
- }
- }
-
- if (k == -1000)
- {
- throw new IOException("First image in tiff is not CCITT T4 or T6 compressed");
- }
- if (dataoffset == 0)
- {
- throw new IOException("First image in tiff is not a single tile/strip");
- }
-
- parms.setInt("K",k);
-
- raf.seek(dataoffset);
-
- byte[] buf = new byte[8192];
- int amountRead = -1;
- while( (amountRead = raf.read( buf,0, Math.min(8192,datalength) )) > 0 )
- {
- datalength -= amountRead;
- os.write( buf, 0, amountRead );
- }
-
- }
- finally
- {
- os.close();
- }
- }
-
- private int readshort(char endianess, RandomAccessFile raf) throws IOException
- {
- if (endianess == 'I')
- {
- return raf.read() | (raf.read() << 8);
- }
- return (raf.read() << 8) | raf.read();
- }
-
- private int readlong(char endianess, RandomAccessFile raf) throws IOException
- {
- if (endianess == 'I')
- {
- return raf.read() | (raf.read() << 8) | (raf.read() << 16) | (raf.read() << 24);
- }
- return (raf.read() << 24) | (raf.read() << 16) | (raf.read() << 8) | raf.read();
- }
-
-
- /**
- * Extends InputStream to wrap the data from the CCITT Fax with a suitable TIFF Header.
- * For details see www.tiff.org, which contains useful information including pointers to the
- * TIFF 6.0 Specification
- *
- */
- private class TiffWrapper extends InputStream
- {
-
- private int currentOffset; // When reading, where in the tiffheader are we.
- private byte[] tiffheader; // Byte array to store tiff header data
- private InputStream datastream; // Original InputStream
-
- public TiffWrapper(InputStream rawstream, COSDictionary options)
- {
- buildHeader(options);
- currentOffset=0;
- datastream = rawstream;
- }
-
- // Implement basic methods from InputStream
-
- public boolean markSupported()
- {
- return false;
- }
-
- public void reset() throws IOException
- {
- throw new IOException("reset not supported");
- }
-
- // For simple read, take a byte from the tiffheader array or pass through.
- public int read() throws IOException
- {
- if (currentOffset < tiffheader.length)
- {
- return tiffheader[currentOffset++];
- }
- return datastream.read();
- }
-
- // For read methods only return as many bytes as we have left in the header
- // if we've exhausted the header, pass through to the InputStream of the raw CCITT data
- public int read(byte[] data) throws IOException
- {
- if (currentOffset < tiffheader.length)
- {
- int length = java.lang.Math.min(tiffheader.length - currentOffset, data.length);
- if (length > 0)
- {
- System.arraycopy(tiffheader, currentOffset, data, 0, length);
- }
- currentOffset += length;
- return length;
- }
- else
- {
- return datastream.read(data);
- }
- }
-
- // For read methods only return as many bytes as we have left in the header
- // if we've exhausted the header, pass through to the InputStream of the raw CCITT data
- public int read(byte[] data, int off, int len) throws IOException
- {
- if (currentOffset < tiffheader.length)
- {
- int length = java.lang.Math.min(tiffheader.length - currentOffset, len);
- if (length > 0)
- {
- System.arraycopy(tiffheader, currentOffset, data, off, length);
- }
- currentOffset += length;
- return length;
- }
- else
- {
- return datastream.read(data,off,len);
- }
- }
-
- // When skipping if any header data not yet read, only allow to skip what we've in the buffer
- // Otherwise just pass through.
- public long skip(long n) throws IOException
- {
- if (currentOffset < tiffheader.length)
- {
- long length = Math.min(tiffheader.length - currentOffset, n);
- currentOffset += length;
- return length;
- }
- else
- {
- return datastream.skip(n);
- }
- }
-
- // Static data for the beginning of the TIFF header
- private final byte[] basicHeader = {
- 'I','I',42,0,8,0,0,0, // File introducer and pointer to first IFD
- 0,0}; // Number of tags start with two
-
-
- private int additionalOffset; // Offset in header to additional data
-
- // Builds up the tiffheader based on the options passed through.
- private void buildHeader(COSDictionary options)
- {
-
- final int numOfTags = 10; // The maximum tags we'll fill
- final int maxAdditionalData = 24; // The maximum amount of additional data
- // outside the IFDs. (bytes)
-
- // The length of the header will be the length of the basic header (10)
- // plus 12 bytes for each IFD, 4 bytes as a pointer to the next IFD (will be 0)
- // plus the length of the additional data
-
- tiffheader = new byte[10 + (12 * numOfTags ) + 4 + maxAdditionalData];
- java.util.Arrays.fill(tiffheader,(byte)0);
- System.arraycopy(basicHeader,0,tiffheader,0,basicHeader.length);
-
- // Additional data outside the IFD starts after the IFD's and pointer to the next IFD (0)
- additionalOffset = 10 + (12 * numOfTags ) + 4;
-
- // Now work out the variable values from TIFF defaults,
- // PDF Defaults and the Dictionary for this XObject
- short cols = 1728;
- short rows = 0;
- short blackis1 = 0;
- short comptype = 3; // T4 compression
- long t4options = 0; // Will set if 1d or 2d T4
-
- COSDictionary decodeParms = (COSDictionary) options.getDictionaryObject("DecodeParms");
-
- if (decodeParms != null)
- {
- cols = (short) decodeParms.getInt("Columns", cols);
- rows = (short) decodeParms.getInt("Rows", rows);
- if (decodeParms.getBoolean("BlackIs1", false))
- {
- blackis1 = 1;
- }
- int k = decodeParms.getInt("K"); // Mandatory parm
- if (k < 0)
- {
- //T6
- comptype = 4;
- }
- if (k > 0)
- {
- //T4 2D
- comptype = 3;
- t4options = 1;
- }
- // else k = 0, leave as default T4 1D compression
- }
-
- // If we couldn't get the number of rows, use the main item from XObject
- if (rows == 0)
- {
- rows = (short) options.getInt("Height", rows);
- }
-
- // Now put the tags into the tiffheader
- // These musn't exceed the maximum set above, and by TIFF spec should be sorted into
- // Numeric sequence.
-
- addTag(256, cols); // Columns
- addTag(257, rows); // Rows
- addTag(259, comptype); // T6
- addTag(262, blackis1); // Photometric Interpretation
- addTag(273, (long) tiffheader.length); // Offset to start of image data - updated below
- addTag(279, (long) options.getInt("Length")); // Length of image data
- addTag(282, 300, 1); // X Resolution 300 (default unit Inches) This is arbitary
- addTag(283, 300, 1); // Y Resolution 300 (default unit Inches) This is arbitary
- if (comptype == 3)
- {
- addTag(292, t4options);
- }
- addTag(305, "PDFBOX"); // Software generating image
- }
-
- /* Tiff types 1 = byte, 2=ascii, 3=short, 4=ulong 5=rational */
-
- private void addTag(int tag,long value)
- {
- // Adds a tag of type 4 (ulong)
- int count = ++tiffheader[8];
- int offset = (count-1)*12 + 10;
- tiffheader[offset]=(byte)(tag & 0xff);
- tiffheader[offset+1]=(byte)((tag>>8) & 0xff);
- tiffheader[offset+2]=4; // Type Long
- tiffheader[offset+4]=1; // One Value
- tiffheader[offset+8]=(byte)(value & 0xff);
- tiffheader[offset+9]=(byte)((value>>8) & 0xff);
- tiffheader[offset+10]=(byte)((value>>16) & 0xff);
- tiffheader[offset+11]=(byte)((value>>24) & 0xff);
- }
-
- private void addTag(int tag, short value)
- {
- // Adds a tag of type 3 (short)
- int count = ++tiffheader[8];
- int offset = (count-1)*12 + 10;
- tiffheader[offset]=(byte)(tag & 0xff);
- tiffheader[offset+1]=(byte)((tag>>8) & 0xff);
- tiffheader[offset+2]=3; // Type Short
- tiffheader[offset+4]=1; // One Value
- tiffheader[offset+8]=(byte)(value & 0xff);
- tiffheader[offset+9]=(byte)((value>>8) & 0xff);
- }
-
- private void addTag(int tag, String value)
- {
- // Adds a tag of type 2 (ascii)
- int count = ++tiffheader[8];
- int offset = (count-1)*12 + 10;
- tiffheader[offset]=(byte)(tag & 0xff);
- tiffheader[offset+1]=(byte)((tag>>8) & 0xff);
- tiffheader[offset+2]=2; // Type Ascii
- tiffheader[offset+4]=1; // One Value
- tiffheader[offset+8]=(byte)(additionalOffset & 0xff);
- tiffheader[offset+9]=(byte)((additionalOffset>>8) & 0xff);
- tiffheader[offset+10]=(byte)((additionalOffset>>16) & 0xff);
- tiffheader[offset+11]=(byte)((additionalOffset>>24) & 0xff);
- System.arraycopy(value.getBytes(), 0, tiffheader, additionalOffset, value.length());
- additionalOffset += value.length() + 1;
- }
-
- private void addTag(int tag, long numerator, long denominator)
- {
- // Adds a tag of type 5 (rational)
- int count = ++tiffheader[8];
- int offset = (count-1)*12 + 10;
- tiffheader[offset]=(byte)(tag & 0xff);
- tiffheader[offset+1]=(byte)((tag>>8) & 0xff);
- tiffheader[offset+2]=5; // Type Rational
- tiffheader[offset+4]=1; // One Value
- tiffheader[offset+8]=(byte)(additionalOffset & 0xff);
- tiffheader[offset+9]=(byte)((additionalOffset>>8) & 0xff);
- tiffheader[offset+10]=(byte)((additionalOffset>>16) & 0xff);
- tiffheader[offset+11]=(byte)((additionalOffset>>24) & 0xff);
- tiffheader[additionalOffset++]=(byte) ((numerator) & 0xFF);
- tiffheader[additionalOffset++]=(byte) ((numerator>>8) & 0xFF);
- tiffheader[additionalOffset++]=(byte) ((numerator>>16) & 0xFF);
- tiffheader[additionalOffset++]=(byte) ((numerator>>24) & 0xFF);
- tiffheader[additionalOffset++]=(byte) ((denominator) & 0xFF);
- tiffheader[additionalOffset++]=(byte) ((denominator>>8) & 0xFF);
- tiffheader[additionalOffset++]=(byte) ((denominator>>16) & 0xFF);
- tiffheader[additionalOffset++]=(byte) ((denominator>>24) & 0xFF);
- }
- }
-}
\ No newline at end of file |